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PMID:3304 | Multiple changes in distal stop-flow electrolyte patterns and reduction of acid excretion induced in rabbits by angiotensin. | 1. Angiotensin has previously been shown to inhibit distal renal tubular sodium reabsorption. As a consequence of this, or independently, it might influence the distal handling of other electrolytes. We have therefore examined the effects of angiotensin on the distal reabsorption or secretion of a spectrum of electroly... | Multiple changes in distal stop-flow electrolyte patterns and reduction of acid excretion induced in rabbits by angiotensin. 1. Angiotensin has previously been shown to inhibit distal renal tubular sodium reabsorption. As a consequence of this, or independently, it might influence the distal handling of other electroly... | [
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PMID:3305 | The acute effects of respiratory and metabolic acidosis on renal function in the dog. | 1. Effective renal plasma flow, glomerular filtration rate and cardiac output were measured in osmotically loaded dogs before and during comparable acute respiratory and metabolic acidosis. 2. Urine output increased in control dogs and in animals with metabolic acidosis, but declined with respiratory acidosis. Effectiv... | The acute effects of respiratory and metabolic acidosis on renal function in the dog. 1. Effective renal plasma flow, glomerular filtration rate and cardiac output were measured in osmotically loaded dogs before and during comparable acute respiratory and metabolic acidosis. 2. Urine output increased in control dogs an... | [
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PMID:3306 | The haemodynamic effects of metabolic acidosis in the rat. | 1. The effect of metabolic acidosis of 4-6 h duration on cardiac output, blood pressure, heart rate, and hepatic and renal blood flow has been studied in the rat. 2. In anaesthetized rats, blood pressure and heart rate fell linearly with blood pH in both sham-operated and nephrectomized rats. There was no significant d... | The haemodynamic effects of metabolic acidosis in the rat. 1. The effect of metabolic acidosis of 4-6 h duration on cardiac output, blood pressure, heart rate, and hepatic and renal blood flow has been studied in the rat. 2. In anaesthetized rats, blood pressure and heart rate fell linearly with blood pH in both sham-o... | [
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PMID:3307 | The effect of acidosis on lactate removal by the perfused rat kidney. | 1. The isolated perfused kidneys of fed rats in normal acid-base status showed a constant rate of lactate removal from the perfusate between 5 and 90 min of perfusion at a perfusate pH of 7-4-7-5. 2. Lactate removal by kidneys of rats in normal acid-base status was stimulated within 30 min by a reduction in perfusate p... | The effect of acidosis on lactate removal by the perfused rat kidney. 1. The isolated perfused kidneys of fed rats in normal acid-base status showed a constant rate of lactate removal from the perfusate between 5 and 90 min of perfusion at a perfusate pH of 7-4-7-5. 2. Lactate removal by kidneys of rats in normal acid-... | [
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PMID:3386 | Elastin--proteoglycan interaction. Conformational changes of alpha-elastin induced by the interaction. | The interaction between alpha-elastin and a connective tissue proteoglycan was followed by optical density measurements and circular dichroism spectroscopy. It was found that interaction takes place at pH values below the isoelectric point of elastin with the formation of a complex coacervate. CD spectra demonstrated c... | Elastin--proteoglycan interaction. Conformational changes of alpha-elastin induced by the interaction. The interaction between alpha-elastin and a connective tissue proteoglycan was followed by optical density measurements and circular dichroism spectroscopy. It was found that interaction takes place at pH values below... | [
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PMID:3387 | Bilateral cryptorchidism in a bull. | Clinical and pathological observations were made on a case of bilateral cryptorchidism in a bull. Sexual libido could not be assessed because the bull was housed alone. The location of the intraabdominal testes indicated that surgical castration would necessitate a flank laparotomy incision. | Bilateral cryptorchidism in a bull. Clinical and pathological observations were made on a case of bilateral cryptorchidism in a bull. Sexual libido could not be assessed because the bull was housed alone. The location of the intraabdominal testes indicated that surgical castration would necessitate a flank laparotomy i... | [
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PMID:3393 | Treatment of tardive dyskinesia. | The pathogenesis of tardive dyskinesia is distinct from and may be functionally opposite to that of parkinsonism. The former is thought to be related to central nervous system dopaminergic hyperactivity, while the latter is known to be related to dopamine deficiency. An effective schema for the treatment of tardive dys... | Treatment of tardive dyskinesia. The pathogenesis of tardive dyskinesia is distinct from and may be functionally opposite to that of parkinsonism. The former is thought to be related to central nervous system dopaminergic hyperactivity, while the latter is known to be related to dopamine deficiency. An effective schema... | [
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PMID:3394 | Epidemiology of tardive dyskinesia Part I. | We have performed an epidemiological study concerning tardive dyskinesia on a sample of 332 chronic schizophrenic patients (142 males and 190 females, mean age 48.6 years, mean duration of neuroleptic treatment 14.5 years). We could conclude that the age of patients at the time of assessment procedures is the most impo... | Epidemiology of tardive dyskinesia Part I. We have performed an epidemiological study concerning tardive dyskinesia on a sample of 332 chronic schizophrenic patients (142 males and 190 females, mean age 48.6 years, mean duration of neuroleptic treatment 14.5 years). We could conclude that the age of patients at the tim... | [
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PMID:3392 | Postnatal development of the circadian rhythm of rat liver tyrosine aminotransferase activity. | The rhythm of tyrosine aminotransferase (TAT) activity in 2-day old rats is characterized by a maximum at the beginning and a further one at the end of light-time. In 7-day old animals, the rhythm is much less pronounced than in 2-day old pups. At the 21st day of life, the rats already exhibit the rhythmic pattern of t... | Postnatal development of the circadian rhythm of rat liver tyrosine aminotransferase activity. The rhythm of tyrosine aminotransferase (TAT) activity in 2-day old rats is characterized by a maximum at the beginning and a further one at the end of light-time. In 7-day old animals, the rhythm is much less pronounced than... | [
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PMID:3395 | The influence of dehydrocholate on hepatic uptake and biliary excretion of 3H-taurocholate and 3H-ouabain. | The hepatic uptake and biliary excretion of 3H-taurocholate and 3H-ouabain was studied in the rat during saline (control) and dehydrocholate infusions. Dehydrocholate (140 mumol/hr) did not influence the plasma disappearance nor the biliary excretion of taurocholate after a single iv injection (37 mumol/kg). Bile produ... | The influence of dehydrocholate on hepatic uptake and biliary excretion of 3H-taurocholate and 3H-ouabain. The hepatic uptake and biliary excretion of 3H-taurocholate and 3H-ouabain was studied in the rat during saline (control) and dehydrocholate infusions. Dehydrocholate (140 mumol/hr) did not influence the plasma di... | [
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PMID:3396 | Postnatal development of mixed-function oxidation as measured in microsomes from the small intestine and liver of rabbits. | The postnatal development of aminopyrine N-demethylase, aniline 4-hydroxylase, benzpyrene hydroxylase, biphenyl 4-hydroxylase, 7-ethoxycoumarin 0-deethylase activities, NADPH-cytochrome c reductase, and cytochrome P-450 was compared in microsomes from the liver and small intestine of New Zealand white rabbits. Apart fr... | Postnatal development of mixed-function oxidation as measured in microsomes from the small intestine and liver of rabbits. The postnatal development of aminopyrine N-demethylase, aniline 4-hydroxylase, benzpyrene hydroxylase, biphenyl 4-hydroxylase, 7-ethoxycoumarin 0-deethylase activities, NADPH-cytochrome c reductase... | [
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PMID:3397 | Characterization of the hepatic microsomal mixed-function oxidase enzyme system in miniature pigs. | Hepatic microsomal protein, cytochrome P-450, UDP-glucuronyltransferase, ethylmorphine demethylase, aniline hydroxylase, and aryl hydrocarbon hydroxylase levels were measured in the 2-, 4-, 5-, 6-, and 8-month-old Hanford miniature pig. The activities or concentrations of all of the liver parameters measured had appare... | Characterization of the hepatic microsomal mixed-function oxidase enzyme system in miniature pigs. Hepatic microsomal protein, cytochrome P-450, UDP-glucuronyltransferase, ethylmorphine demethylase, aniline hydroxylase, and aryl hydrocarbon hydroxylase levels were measured in the 2-, 4-, 5-, 6-, and 8-month-old Hanford... | [
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PMID:3398 | Monooxygenase-catalyzed aldrin epoxidation and dihydroisodrin hydroxylation in monkey liver needle-biopsy specimens. Assay and properties. | Aldrin epoxidation and dihydroisodrin (1,8,9,10,11,11-hexachloro-2,3-7,6-endo-2,1-7,8-endo-tetracyclo [6.2.1.1(3), (6).0(2), (7)]dodec-9-ene (DHI) hydroxylation have been studied in 0.2-ml liver monooxygenase preparations. Liver biopsy specimens of rhesus (Macaca mulatta) and bonnet (M. radiata) monkeys obtained with a... | Monooxygenase-catalyzed aldrin epoxidation and dihydroisodrin hydroxylation in monkey liver needle-biopsy specimens. Assay and properties. Aldrin epoxidation and dihydroisodrin (1,8,9,10,11,11-hexachloro-2,3-7,6-endo-2,1-7,8-endo-tetracyclo [6.2.1.1(3), (6).0(2), (7)]dodec-9-ene (DHI) hydroxylation have been studied in... | [
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PMID:3399 | In vitro metabolism of 1-phenyl-2-propanone oxime in rat liver homogenates. | 1-Phenyl-2-propanone oxime is a known in vitro metabolite of amphetamine. Further in vitro metabolism of this oxime with the 12,000g supernatant fraction from homogenized rat liver gave one major and two minor metabolites which were identified as 2-nitro-1-phenylpropane, benzyl alcohol, and 1-phenyl-2-propanone, respec... | In vitro metabolism of 1-phenyl-2-propanone oxime in rat liver homogenates. 1-Phenyl-2-propanone oxime is a known in vitro metabolite of amphetamine. Further in vitro metabolism of this oxime with the 12,000g supernatant fraction from homogenized rat liver gave one major and two minor metabolites which were identified ... | [
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PMID:3400 | Anaerobic release of fluoride from halothane. Relationship to the binding of halothane metabolites to hepatic cellular constituents. | Halothane has been found to undergo a reductive defluorination. This reaction requires an active cytochrome P-450 system and NADPH, and is inducible by phenobarbital and polychlorinated biphenyls but not by methylcholanthrene. The fluoride release occurs only under low O2 tension, while high O2 tension results in the o... | Anaerobic release of fluoride from halothane. Relationship to the binding of halothane metabolites to hepatic cellular constituents. Halothane has been found to undergo a reductive defluorination. This reaction requires an active cytochrome P-450 system and NADPH, and is inducible by phenobarbital and polychlorinated b... | [
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PMID:3401 | Microsomal spectral properties and narcotic N-demethylase activity in methadone-dependent rats. | Rats were given access ad lib. to various concentrations (0.3 to 1.0 mg/ml) of methadone hydrochloride dissolved in sucrose solution. The N-demethylation of various narcotics was studied in hepatic preparations from methadone-consuming rats in order to determine if there was substrate specificity for the microsomal dem... | Microsomal spectral properties and narcotic N-demethylase activity in methadone-dependent rats. Rats were given access ad lib. to various concentrations (0.3 to 1.0 mg/ml) of methadone hydrochloride dissolved in sucrose solution. The N-demethylation of various narcotics was studied in hepatic preparations from methadon... | [
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PMID:3402 | Metabolism of 2-(3-chloro-4(4-chlorobenzoyl)-phenyl)-as-triazine-3,5(2H,4H)-dione by the chicken. | The metabolism of the anticoccidial 2-[3-chloro-4-(4-chlorobenzoyl)phenyl]-as-triazine-3,-5(2H,4H)-dione (CP-25,415) was investigated in the chicken. It was shown that the predominant residue present in the chicken was 2-[3-chloro-4-(alpha-hydroxy-4-chlorobenzoyl)phenyl]-as-triazine-3,5(2H,4H)-dione (CP-25,641). A gas-... | Metabolism of 2-(3-chloro-4(4-chlorobenzoyl)-phenyl)-as-triazine-3,5(2H,4H)-dione by the chicken. The metabolism of the anticoccidial 2-[3-chloro-4-(4-chlorobenzoyl)phenyl]-as-triazine-3,-5(2H,4H)-dione (CP-25,415) was investigated in the chicken. It was shown that the predominant residue present in the chicken was 2-[... | [
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PMID:3403 | Physiological disposition and metabolism of N-t-butylarterenol and its di-p-toluate ester (bitolterol) in the rat. | The metabolism and disposition of the bronchodilator, N-t-butylarterenol (tBA) and its di-p-toluate ester (bitolterol) were compared in the rat. Radioactivity was preferentially retained in lungs of rats compared with heart and blood after iv medication with tritium-labeled bitolterol, but was not retained in tissues a... | Physiological disposition and metabolism of N-t-butylarterenol and its di-p-toluate ester (bitolterol) in the rat. The metabolism and disposition of the bronchodilator, N-t-butylarterenol (tBA) and its di-p-toluate ester (bitolterol) were compared in the rat. Radioactivity was preferentially retained in lungs of rats c... | [
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PMID:3404 | Physiological disposition and metabolism of (3H)bitolterol in man and dog. | The metabolism and disposition of bitolterol, the di-p-toluate ester of N-t-butylarterenol (tBA) was studied in man after a single oral dose and in dog after intraduodenal, iv, or oral administration. The mean (+/- SE) peak plasma radioactivity in man (dose, 70 mug/kg) was 180 +/- 18 ng equivalents of [3H]bitolterol pe... | Physiological disposition and metabolism of (3H)bitolterol in man and dog. The metabolism and disposition of bitolterol, the di-p-toluate ester of N-t-butylarterenol (tBA) was studied in man after a single oral dose and in dog after intraduodenal, iv, or oral administration. The mean (+/- SE) peak plasma radioactivity ... | [
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PMID:3405 | Adriamycin metabolism in man. Evidence from urinary metabolites. | We studied the human metabolism of adriamycin by isolating and identifying urinary metabolites which retain adriamycin's specific fluorescence properties. Metabolites were extracted by adsorption to polystyrene polymeric sorbants, separated on silicic acid columns and purified by thin-layer chromatography. Structures w... | Adriamycin metabolism in man. Evidence from urinary metabolites. We studied the human metabolism of adriamycin by isolating and identifying urinary metabolites which retain adriamycin's specific fluorescence properties. Metabolites were extracted by adsorption to polystyrene polymeric sorbants, separated on silicic aci... | [
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PMID:3411 | [Termination of pregnancy and perinatal mortality (author's transl)]. | Elective induction was practised in 1875 of 10 537 deliveries (17.8%). Duration of delivery was, if anything, shortened after elective induction, compared with spontaneous delivery. There was no evidence of soft-tissue dystocias after elective induction. The Apgar score was 8-10 in 95.7% of children born after elective... | [Termination of pregnancy and perinatal mortality (author's transl)]. Elective induction was practised in 1875 of 10 537 deliveries (17.8%). Duration of delivery was, if anything, shortened after elective induction, compared with spontaneous delivery. There was no evidence of soft-tissue dystocias after elective induct... | [
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PMID:3406 | Binding of organic compounds to rat liver and lung. | The binding of various radioisotopically labeled organic compounds to rat liver and lung was investigated in vitro. Pieces of rat lung and slices of rat liver were incubated at 37 degrees C under a nitrogen atmosphere in a modified Krebs-Ringer phosphate solution (pH 7.4) CONTAININg the compound to be studied. Of the n... | Binding of organic compounds to rat liver and lung. The binding of various radioisotopically labeled organic compounds to rat liver and lung was investigated in vitro. Pieces of rat lung and slices of rat liver were incubated at 37 degrees C under a nitrogen atmosphere in a modified Krebs-Ringer phosphate solution (pH ... | [
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PMID:3407 | Pharmacokinetics of digoxin in the rat. | Previous studies on the pharmacokinetics of 3H-digoxin in the rat have been based on total radioactivity in the plasma, even though the drug is extensively metabolized in this species. A comparison of total radioactivity vs. unchanged drug in rat plasma after administration of 3H-digoxin clearly showed the need to sepa... | Pharmacokinetics of digoxin in the rat. Previous studies on the pharmacokinetics of 3H-digoxin in the rat have been based on total radioactivity in the plasma, even though the drug is extensively metabolized in this species. A comparison of total radioactivity vs. unchanged drug in rat plasma after administration of 3H... | [
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PMID:3408 | N-acetylation of drugs. Pharmacogenetic studies in rabbits selected for their acetylator characteristics. | Studies on acetylation of sulfadiazine, isoniazid, and p-aminobenzoic acid in selected lines of slow and rapid acetylator rabbits are described. Pedigree analysis of rabbits classified as slow or rapid sulfadiazine acetylators confirmed previous studies that the rate of sulfadiazine elimination (acetylation) is genetic... | N-acetylation of drugs. Pharmacogenetic studies in rabbits selected for their acetylator characteristics. Studies on acetylation of sulfadiazine, isoniazid, and p-aminobenzoic acid in selected lines of slow and rapid acetylator rabbits are described. Pedigree analysis of rabbits classified as slow or rapid sulfadiazine... | [
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PMID:3414 | Histidyl transfer ribonucleic acid synthetase from Salmonella typhimurium. Interaction with substrates and ATP analogues. | Structural requirements for substrate binding to histidyl-tRNA synthetase from Salmonella typhimurium have been investigated using ATP analogues. Ki values and the relative binding affinity of the enzyme for these analogues have been determined in the tRNA aminoacylation reaction. The enzyme is highly specific for ATP:... | Histidyl transfer ribonucleic acid synthetase from Salmonella typhimurium. Interaction with substrates and ATP analogues. Structural requirements for substrate binding to histidyl-tRNA synthetase from Salmonella typhimurium have been investigated using ATP analogues. Ki values and the relative binding affinity of the e... | [
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PMID:3415 | [The coupling of beta1-24-corticotropin to the adenylate-cylase system in rat adipocytes. Evidence for hormone-nucleotides interaction (author's transl)]. | The general aim was to define some of the most important parameters involved in the coupling step between the synthetic analog of adrenocoricotropin hormone (beta1-24-corticotropin tetracosa peptide) and the catalytic unit of the adenylate-cyclase system of fat cells. These studies were performed with a purified plas... | [The coupling of beta1-24-corticotropin to the adenylate-cylase system in rat adipocytes. Evidence for hormone-nucleotides interaction (author's transl)]. The general aim was to define some of the most important parameters involved in the coupling step between the synthetic analog of adrenocoricotropin hormone (beta1-... | [
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PMID:3416 | Ion-binding to phospholipids. Interaction of calcium with phosphatidylserine. | The binding of Ca2+ to monolayers and bilayers of phosphatidylserine has been investigated as a function of pH, ionic strength (NaCl concentration) and Ca2+ concentration using surface and colloid chemical techniques. The molar ratio of lipid to bound calcium decreases to 2 as the Ca2+ concentration is increased to abo... | Ion-binding to phospholipids. Interaction of calcium with phosphatidylserine. The binding of Ca2+ to monolayers and bilayers of phosphatidylserine has been investigated as a function of pH, ionic strength (NaCl concentration) and Ca2+ concentration using surface and colloid chemical techniques. The molar ratio of lipid... | [
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PMID:3419 | Action of H1 and H2 inhibitors on the response of histamine sensitive adenyly cyclase from guinea-pig mucosa. | In the guinea-pig, it has been shown that homogenates of mucosa from the fundus contain an adenylyl cyclase system that is activated by histamine as well as by prostaglandins PGE1 and PGA1. The effects of burimamide, an H2-inhibitor, and mepyramine and chlorpheniramide, both H1-inhibitors, were tested. Both H1 and H2 i... | Action of H1 and H2 inhibitors on the response of histamine sensitive adenyly cyclase from guinea-pig mucosa. In the guinea-pig, it has been shown that homogenates of mucosa from the fundus contain an adenylyl cyclase system that is activated by histamine as well as by prostaglandins PGE1 and PGA1. The effects of burim... | [
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PMID:3420 | Anti-arrhythmic action of nadolol, a beta-adrenergic receptor blocking agent. | The anti-arrhythmic action of 2,3-cis-1,2,3,4-tetrahydro-5-[(2-hydroxy-3-tert-butylamino)propoxy]2,3-naphthalenediol (nadolol) was evaluated and compared with that of propranolol in several experimental models of cardiac arrhythmias. Both nadolol and propranolol antagonized isoproterenol-induced tachycardia and ouabain... | Anti-arrhythmic action of nadolol, a beta-adrenergic receptor blocking agent. The anti-arrhythmic action of 2,3-cis-1,2,3,4-tetrahydro-5-[(2-hydroxy-3-tert-butylamino)propoxy]2,3-naphthalenediol (nadolol) was evaluated and compared with that of propranolol in several experimental models of cardiac arrhythmias. Both nad... | [
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PMID:3421 | Effects of chemical stimulation of the mesolimbic dopamine system upon locomotor activity. | The effects of local injections of drugs into terminal areas of the mesolimbic dopamine system were investigated. Bilateral administration of dopamine, but not of noradrenaline and serotonin, into the nucleus accumbens of non-pretreated rats resulted in stimulation of locomotor activity. No clear or only minor effects ... | Effects of chemical stimulation of the mesolimbic dopamine system upon locomotor activity. The effects of local injections of drugs into terminal areas of the mesolimbic dopamine system were investigated. Bilateral administration of dopamine, but not of noradrenaline and serotonin, into the nucleus accumbens of non-pre... | [
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PMID:3426 | Effect of PGE1 on lipogenesis in perfused rat liver. | In perfused livers of 24 hour-fasted rats, PGE1 (prostaglandin E1) infused continuously into the perfusate, was found to cause a 45% increase in the incorporation of 1-14C acetate into liver fatty acids. PGE1 was found to have no effect, however, on the activity of the key lipogenic enzymes. | Effect of PGE1 on lipogenesis in perfused rat liver. In perfused livers of 24 hour-fasted rats, PGE1 (prostaglandin E1) infused continuously into the perfusate, was found to cause a 45% increase in the incorporation of 1-14C acetate into liver fatty acids. PGE1 was found to have no effect, however, on the activity of t... | [
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PMID:3428 | Influence of mono- and multivalent cations on the electrokinetic properties of normal human lymphoid and burkitt lymphoma cells. | Various mono- and multivalent cations, at constant ionic strength, affected the surface electrokinetic properties of normal human lymphoid and Burkitt lymphoma cells in a manner which reflected more the physicochemical properties and binding affinities of the cation than its valence. The effect was expressed in the cha... | Influence of mono- and multivalent cations on the electrokinetic properties of normal human lymphoid and burkitt lymphoma cells. Various mono- and multivalent cations, at constant ionic strength, affected the surface electrokinetic properties of normal human lymphoid and Burkitt lymphoma cells in a manner which reflect... | [
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PMID:3435 | 1,8-naphthyridine derivatives: synthesis and pharmacological evaluation of beta-receptor blocking activity. | The synthesis of a number of 1-alkyl-7-(2-hydroxy-3-alkylaminopropoxy)-1,8-naphthyridin-2-ones is described. The compounds studied were prepared by reaction of 1-alkyl-7-hydroxy-1,8-naphthyridin-2-ones with epichlorohydrin. The substituted epoxy intermediates obtained were allowed to react with amines and gave the desi... | 1,8-naphthyridine derivatives: synthesis and pharmacological evaluation of beta-receptor blocking activity. The synthesis of a number of 1-alkyl-7-(2-hydroxy-3-alkylaminopropoxy)-1,8-naphthyridin-2-ones is described. The compounds studied were prepared by reaction of 1-alkyl-7-hydroxy-1,8-naphthyridin-2-ones with epich... | [
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PMID:3433 | [Pharmacology of methvin--a new ganglionic blocking preparation of short-term effect]. | Methvin (vincanin chlormethylate) is an active ganglion blocking agent of a short-term action. As regards its gangliolytic action it is approximately 6 times superior to afronad. In test animals the drug produces a well-marked and short-term (easily controllable) hypotensive effect, without causing any histamine-like a... | [Pharmacology of methvin--a new ganglionic blocking preparation of short-term effect]. Methvin (vincanin chlormethylate) is an active ganglion blocking agent of a short-term action. As regards its gangliolytic action it is approximately 6 times superior to afronad. In test animals the drug produces a well-marked and sh... | [
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PMID:3434 | [Heightened anticholinesterase activity of chlorophos in its interaction with the TMB-4 reactivator in vitro]. | Experiments in vitro demonstrated that a thermostatic treatment of an aqueous chlorophos solution at 38 degrees is attended by its increased cholinesterase activity. The speed of the process is much higher in an alkaline medium. A joint incubation of chlorophos with the TMB-4 reactivator of pH of 7.5 and 38 degrees not... | [Heightened anticholinesterase activity of chlorophos in its interaction with the TMB-4 reactivator in vitro]. Experiments in vitro demonstrated that a thermostatic treatment of an aqueous chlorophos solution at 38 degrees is attended by its increased cholinesterase activity. The speed of the process is much higher in ... | [
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PMID:3445 | The temperature, pH, and partial pressure of oxygen in the cervix and uterus of women and uterus of rats during the cycle. | Changes in the temperature, pH, and partial pressure of oxygen (PO2) in the cervical canal and cavum uteri were measured in women with or without an intrauterine device and in the uteri of rats throughout the cycle. Only the PO2 exhibited significant variations, rising during the ovulatory phase in both cervices of wom... | The temperature, pH, and partial pressure of oxygen in the cervix and uterus of women and uterus of rats during the cycle. Changes in the temperature, pH, and partial pressure of oxygen (PO2) in the cervical canal and cavum uteri were measured in women with or without an intrauterine device and in the uteri of rats thr... | [
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PMID:3446 | [Responses of small intestine tissue chemoreceptors to change in the pCO2, pH and (HCO3-) in perfusion solutions]. | Perfusion of the small intestine of anesthetized cats with a solution having excessive CO2 and H+ concentration (pCO2 60 mm Hg; pH; 7.2; [HCO3-] 25 MM) produced a threshold reflex increase in the blood pressure. The subsequent increase of pCO2 to 380 mm Hg and decrease of pH to 6.4 evoked a gradual raise of the blood p... | [Responses of small intestine tissue chemoreceptors to change in the pCO2, pH and (HCO3-) in perfusion solutions]. Perfusion of the small intestine of anesthetized cats with a solution having excessive CO2 and H+ concentration (pCO2 60 mm Hg; pH; 7.2; [HCO3-] 25 MM) produced a threshold reflex increase in the blood pre... | [
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PMID:3448 | Identification of dimethylnitrosoamine metabolites in vitro. | The incubation of dimethylnitrosoamine (DMNA) in the presence of rat liver microsomes leads to production of formaldehyde, formic acid, methylamine, and N-methylhydrazine. When pH 5-enzymes are added to the medium there is also the formation of N-methylhydroxylamide and N,N-dimethylhydrazine. The last compound is the o... | Identification of dimethylnitrosoamine metabolites in vitro. The incubation of dimethylnitrosoamine (DMNA) in the presence of rat liver microsomes leads to production of formaldehyde, formic acid, methylamine, and N-methylhydrazine. When pH 5-enzymes are added to the medium there is also the formation of N-methylhydrox... | [
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PMID:3449 | Degradation of dimethylnitrosoamine catalysed by physical and chemical agents. | Decomposition of dimethylnitrosoamine (DMNA) by chemical and physical agents was further investigated. Both photoirradiation with sunlight or ultraviolet ray and reductive reactions under acid conditions (likely occurring in the stomach) led to the formation of formaldehyde, formic acid, and N-methydrazine, in addition... | Degradation of dimethylnitrosoamine catalysed by physical and chemical agents. Decomposition of dimethylnitrosoamine (DMNA) by chemical and physical agents was further investigated. Both photoirradiation with sunlight or ultraviolet ray and reductive reactions under acid conditions (likely occurring in the stomach) led... | [
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PMID:3450 | Properties of aryl hydrocarbon hydroxylase in microsomes of Morris hepatoma 5123D and the host liver. | Properties of aryl hydrocarbon hydroxylase in the microsomes were compared between Morris hepatoma 5123D and the host liver from rats bearing this tumor. Requirement of NADPH for the assay of the enzyme activity was observed, compared to that of NADH, and also the additive effect of NADH on the requirement of NADPH was... | Properties of aryl hydrocarbon hydroxylase in microsomes of Morris hepatoma 5123D and the host liver. Properties of aryl hydrocarbon hydroxylase in the microsomes were compared between Morris hepatoma 5123D and the host liver from rats bearing this tumor. Requirement of NADPH for the assay of the enzyme activity was ob... | [
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PMID:3451 | Electronic interaction of carcinogenic and noncarcinogenic benz(c)acridines and DNA. | Electronic interaction of DNA with nine benzacridine derivatives was studied. The interaction system of these benzacridines and DNA was found to show a marked hypochromism in the ultraviolet region. The orderly double helical structure of DNA was found to play an essential role in this spectroscopic change. A high conc... | Electronic interaction of carcinogenic and noncarcinogenic benz(c)acridines and DNA. Electronic interaction of DNA with nine benzacridine derivatives was studied. The interaction system of these benzacridines and DNA was found to show a marked hypochromism in the ultraviolet region. The orderly double helical structure... | [
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PMID:3452 | Purification of an immunosuppressive principle from Ehrlich carcinoma ascites. | An immunosuppressive factor was purified from Ehrlich carcinoma ascites by the combination of ultrafiltration and Sephadex chromatography. The resulting product showed 50% reduction in the number of splenic plaque-forming cells in mice immunized with sheep red blood cells when as low as 50 mug dose was given twice intr... | Purification of an immunosuppressive principle from Ehrlich carcinoma ascites. An immunosuppressive factor was purified from Ehrlich carcinoma ascites by the combination of ultrafiltration and Sephadex chromatography. The resulting product showed 50% reduction in the number of splenic plaque-forming cells in mice immun... | [
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PMID:3453 | [Inhalation analgesia with methoxyfluran (penthrane) in obstetrics (author's transl)]. | In 105 normal spontaneous deliveries the effect of inhalation analgesia with Methoxyfluran (Penthrane) was studied. Penthrane was administered intermittently with the Penthrane oxilator (Rod inhalator of Abbott). The initial concentration was 0.25 volume%. The maximal concentration was 0.35 volume% of Penthrane. Fetal ... | [Inhalation analgesia with methoxyfluran (penthrane) in obstetrics (author's transl)]. In 105 normal spontaneous deliveries the effect of inhalation analgesia with Methoxyfluran (Penthrane) was studied. Penthrane was administered intermittently with the Penthrane oxilator (Rod inhalator of Abbott). The initial concentr... | [
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PMID:3456 | Post-prandial changes in PH and electrolyte concentration, in the upper jejunum after truncal vagotomy and drainage in man. | The changes in pH and concentration of electrolytes in the jejunal lumen after a hypertonic fluid meal have been studied after truncal vagotomy and drainage, with and without diarrhoea. The results show that, in these respects, there are no specific changes in the jejunal content associated with post-vagotomy diarrhoea... | Post-prandial changes in PH and electrolyte concentration, in the upper jejunum after truncal vagotomy and drainage in man. The changes in pH and concentration of electrolytes in the jejunal lumen after a hypertonic fluid meal have been studied after truncal vagotomy and drainage, with and without diarrhoea. The result... | [
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PMID:3457 | Vitamin B12 absorption--a study of intraluminal events in control subjects and patients with tropical sprue. | The intraluminal fate of orally administered radioactive vitamin B12 has been studied in control subjects with normal vitamin B12 absorption and those with vitamin B12 malabsorption due to tropical sprue. In control subjects 1 to 21% of the dose was bound to sedimentable material and 37 to 75% was bound to immunoreacti... | Vitamin B12 absorption--a study of intraluminal events in control subjects and patients with tropical sprue. The intraluminal fate of orally administered radioactive vitamin B12 has been studied in control subjects with normal vitamin B12 absorption and those with vitamin B12 malabsorption due to tropical sprue. In con... | [
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PMID:3461 | [Experimental testing of a new gastrotherapeutic agent]. | A new gastrotherapeutical preparation, AcT 72, has been evaluated. This preparation contains the anticholinergic drug propantheline bromide, the psychotherapeutical agent perazine, and antacids. In two different series of tests it was demonstrated that after a peroral dose of ACT72, gastric motility was significantly r... | [Experimental testing of a new gastrotherapeutic agent]. A new gastrotherapeutical preparation, AcT 72, has been evaluated. This preparation contains the anticholinergic drug propantheline bromide, the psychotherapeutical agent perazine, and antacids. In two different series of tests it was demonstrated that after a pe... | [
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PMID:3462 | [The disulfide bridges of the trypsin-kallikrein inhibitor K from snails (Helix pomatia). Thermal inactivation and proteolysis by thermolysin (author's transl)]. | Isoinhibitor K is the main component of the complex mixture of isoinhibitors of broad specificity secreted into the mucus by the Roman snail (Helix pomatia). The disulfide pairing was determined after the amino acid sequence had been elucidated. Two cystine-containing peptides with the disulfide bridges Cys32-Cys53 and... | [The disulfide bridges of the trypsin-kallikrein inhibitor K from snails (Helix pomatia). Thermal inactivation and proteolysis by thermolysin (author's transl)]. Isoinhibitor K is the main component of the complex mixture of isoinhibitors of broad specificity secreted into the mucus by the Roman snail (Helix pomatia). ... | [
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PMID:3463 | [The inter-alpha-trypsin inhibitor as precursor of the acid-stable proteinase inhibitors in human serum and urine]. | A small amount of antitryptic activity is detectable in the supernatant of deproteinized human serum. Preincubation of serum with trypsin causes an increase in acid-stable antitryptic activity. This rise in activity depends on the inter alpha-trypsin inhibitor concentration. The native inhibitor present in normal sera,... | [The inter-alpha-trypsin inhibitor as precursor of the acid-stable proteinase inhibitors in human serum and urine]. A small amount of antitryptic activity is detectable in the supernatant of deproteinized human serum. Preincubation of serum with trypsin causes an increase in acid-stable antitryptic activity. This rise ... | [
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PMID:3464 | Plant microbody proteins, I. Purification and characterization of catalase from leaves of lens culinaris. | 1) Catalase from green leaves of Lens culinaris (lentils) was investigated with respect to isoenzyme patterns. In contrast to other plants, which have been reported to contain multiple forms of catalase, only one form of this enzyme was revealed when crude extracts were subjected to starch gel electrophoresis or to pol... | Plant microbody proteins, I. Purification and characterization of catalase from leaves of lens culinaris. 1) Catalase from green leaves of Lens culinaris (lentils) was investigated with respect to isoenzyme patterns. In contrast to other plants, which have been reported to contain multiple forms of catalase, only one f... | [
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PMID:3465 | The activator of human cerebroside sulphatase. Activating effect on the acidic forms of the sulphatases from invertebrates. | 1) Acidic forms of the sulphatase were partially purified from the following invertebrate species: Tethya aurantium (Porifera), Patella vulgata (mollusca), Maja squinado (Arthropoda), Marthasterias glacialis (Echinodermata) and Microcosmus sulcatus (Tunicata). Enzyme preparations thus obtained cleaved cerebroside sulph... | The activator of human cerebroside sulphatase. Activating effect on the acidic forms of the sulphatases from invertebrates. 1) Acidic forms of the sulphatase were partially purified from the following invertebrate species: Tethya aurantium (Porifera), Patella vulgata (mollusca), Maja squinado (Arthropoda), Marthasteria... | [
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PMID:3466 | Multiple forms of boar acrosin and their relationship to proenzyme activation. | Further evidence is presented that the acrosomal proteinase acrosin exists as a zymogen precursor in freshly ejaculated boar spermatozoa. Autoactivation of proacrosin to acrosin takes place optimally at slightly alkaline pH and in the presence of calcium ions. Activation is considerably accelerated by catalytic amounts... | Multiple forms of boar acrosin and their relationship to proenzyme activation. Further evidence is presented that the acrosomal proteinase acrosin exists as a zymogen precursor in freshly ejaculated boar spermatozoa. Autoactivation of proacrosin to acrosin takes place optimally at slightly alkaline pH and in the presen... | [
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PMID:3471 | [Conditions for the efficacy of nutritional therapy]. | This is to discuss regulatory mechanisms which enable the organism to respond optimally to special nutritive conditions. Those regulatory mechanisms are often in disorder with patients who need nutritive therapy. However, normal functions of the body are required for nutrition. Disarrangements in microcirculation, oxyg... | [Conditions for the efficacy of nutritional therapy]. This is to discuss regulatory mechanisms which enable the organism to respond optimally to special nutritive conditions. Those regulatory mechanisms are often in disorder with patients who need nutritive therapy. However, normal functions of the body are required fo... | [
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PMID:3472 | [Clinical testing of bronchospasmolytics in combined alternating test schedules]. | NAB 365, a new beta2-adrenergic bronchodilator was tested in oral doses of 0.01, 0.02, 0.03 and 0.04 mg. An acute trial was carried out in outpatients suffering from chronic obstructive airways disease. Airway resistance was measured by bodyplethysmography. For doses from 0.02 to 0.04 mg NAB 365 a quick, dose related a... | [Clinical testing of bronchospasmolytics in combined alternating test schedules]. NAB 365, a new beta2-adrenergic bronchodilator was tested in oral doses of 0.01, 0.02, 0.03 and 0.04 mg. An acute trial was carried out in outpatients suffering from chronic obstructive airways disease. Airway resistance was measured by b... | [
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PMID:3473 | The first transplantation of a Fallopian tube of frozen material in woman. | There is an ever-present possibility that the children or husband of a sterilized woman may die. In the latter case, and after remarriage, she and her new husband may want children of their own, which presents difficulties, as the low success rate of reconstructive surgery in the sterilised woman is well known. A case ... | The first transplantation of a Fallopian tube of frozen material in woman. There is an ever-present possibility that the children or husband of a sterilized woman may die. In the latter case, and after remarriage, she and her new husband may want children of their own, which presents difficulties, as the low success ra... | [
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PMID:3474 | An objective method for evaluating Angus and Hereford sperm motility. | Angus and Hereford sperm motility was evaluated by an objective spectrophotometric procedure and by a conventional subjective ranking system. Semen was collected by electroejaculation and divided so that one group contained 6 Angus samples and one group contained 12 Hereford samples. Objective procedures indicated that... | An objective method for evaluating Angus and Hereford sperm motility. Angus and Hereford sperm motility was evaluated by an objective spectrophotometric procedure and by a conventional subjective ranking system. Semen was collected by electroejaculation and divided so that one group contained 6 Angus samples and one gr... | [
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PMID:3475 | Sperm antibodies in men from infertile couples. Analysis of sperm agglutinins and immunofluorescent antibodies in 657 men. | Sera from 657 men from infertile couples were tested for sperm agglutinins and spermatozoal antibodies detectable by the indirect immunofluorescense technique (IFT), and the results were correlated to the clinical examinations of the couples. Sperm agglutinins were found in 6.7%. Spontaneous agglutination of the ejacul... | Sperm antibodies in men from infertile couples. Analysis of sperm agglutinins and immunofluorescent antibodies in 657 men. Sera from 657 men from infertile couples were tested for sperm agglutinins and spermatozoal antibodies detectable by the indirect immunofluorescense technique (IFT), and the results were correlated... | [
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PMID:3476 | The value of the basal temperature chart in the management of infertility. | The basal temperature chart (BTC) has been used as a means of screening the ovarian function of infertile patients and for monitoring their response to ovarian stimulation. During three years in a busy infertility clinic, specifically designated for cases of functional infertility, 491 patients were seen and 96 per cen... | The value of the basal temperature chart in the management of infertility. The basal temperature chart (BTC) has been used as a means of screening the ovarian function of infertile patients and for monitoring their response to ovarian stimulation. During three years in a busy infertility clinic, specifically designated... | [
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PMID:3477 | Absorption activity of the blood group substances in various fractions of split ejaculates from man. | Antigens of the ABO system have been determined in the various fractions of split ejaculates from three A and two O (H) men who were secretors. The activity of the antigen was determined by a hemagglutination inhibition test. Within a split ejaculate the various fractions contained almost the same antigen activity, ind... | Absorption activity of the blood group substances in various fractions of split ejaculates from man. Antigens of the ABO system have been determined in the various fractions of split ejaculates from three A and two O (H) men who were secretors. The activity of the antigen was determined by a hemagglutination inhibition... | [
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PMID:3478 | The polycystic ovary. I. Estradiol/testosterone ratio and the use of antiestrogens. | Several treatments have been used to induce ovulation in the polycystic ovary. In the following study, estradiol and testosterone plasma concentration were measured and evaluated in 18 women with polycystic ovaries, as one of the factors involved in the antiestrogenic response to Clomiphene Citrate. An estrogen plasma ... | The polycystic ovary. I. Estradiol/testosterone ratio and the use of antiestrogens. Several treatments have been used to induce ovulation in the polycystic ovary. In the following study, estradiol and testosterone plasma concentration were measured and evaluated in 18 women with polycystic ovaries, as one of the factor... | [
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PMID:3479 | The polycystic ovary. II. Progesterone plasma levels after the use of antiestrogens. | In the present study, the changes observed in the length of the cycle, basal body temperatures, endometrial histology and plasma progesterone in a group of 18 patients with polycystic ovaries, treated with Clomiphene Citrate, is reported. Two distinctive responses were observed depending on the estradiol/testosterone m... | The polycystic ovary. II. Progesterone plasma levels after the use of antiestrogens. In the present study, the changes observed in the length of the cycle, basal body temperatures, endometrial histology and plasma progesterone in a group of 18 patients with polycystic ovaries, treated with Clomiphene Citrate, is report... | [
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PMID:3480 | Offspring of subfertile parents. A preliminary survey. | This preliminary survey reports findings among offspring of subfertile parents. Combining neonatal death, low birth weight and major anomalies, 11 of 60 livebirths (18%) were affected, indicating that subfertility adversely influences neonatal morbidity and mortality. Information was available for 49 of 56 children and... | Offspring of subfertile parents. A preliminary survey. This preliminary survey reports findings among offspring of subfertile parents. Combining neonatal death, low birth weight and major anomalies, 11 of 60 livebirths (18%) were affected, indicating that subfertility adversely influences neonatal morbidity and mortali... | [
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PMID:3481 | Increased fibrinolytic activity in the endometrium of patients using copper-iud (gravigard). | The use of an IUD often causes an increase in the menstrual blood loss, and this is the most common reason for removing the device. The fibrinolytic activity of the endometrium was studied histochemically in 15 women before and after the use of copper-IUD for 2-5 as well as for 8-12 months. The fibrinolytic activity in... | Increased fibrinolytic activity in the endometrium of patients using copper-iud (gravigard). The use of an IUD often causes an increase in the menstrual blood loss, and this is the most common reason for removing the device. The fibrinolytic activity of the endometrium was studied histochemically in 15 women before and... | [
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PMID:3482 | Effects of aminophylline, imidazole and indomethacin on spontaneous and prostaglandin induced ovarian contractions in vitro. | Imidazole, acetylcholine, phenylephrine prostaglandin F2alpha, and methyl prostaglandin F2alpha increased the contractility of guinea pig and human ovaries in vitro. This effect was suppressed by aminophylline. Indomethacin inhibited ovarian contractions. The inhibitory effect of indomethacin was reversed by prostaglan... | Effects of aminophylline, imidazole and indomethacin on spontaneous and prostaglandin induced ovarian contractions in vitro. Imidazole, acetylcholine, phenylephrine prostaglandin F2alpha, and methyl prostaglandin F2alpha increased the contractility of guinea pig and human ovaries in vitro. This effect was suppressed by... | [
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PMID:3483 | Effect of low doses of alpha-chlorohydrin on fertility and semen characteristics and binding of the drug of spermatozoa in swine. | Daily feeding of 1 mg of alpha-chlorohydrin per kg body weight to boars prevented fertility completely when the ejaculate was used for insemination. The semen charactreated than in untreated boars, but the sperm morphology was otherwise normal. In vitro addition of 5 mg/epididymal contents from the treated boars reveal... | Effect of low doses of alpha-chlorohydrin on fertility and semen characteristics and binding of the drug of spermatozoa in swine. Daily feeding of 1 mg of alpha-chlorohydrin per kg body weight to boars prevented fertility completely when the ejaculate was used for insemination. The semen charactreated than in untreated... | [
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PMID:3484 | Active transport system in human spermatozoa. | The presence of potassium influx into human spermatozoa was investigated through the use of radioactive K42 and Rb86. A gradient of potassium and sodium has been found between the spermatozoal midpiece-tail region and seminal plasma. The influx of potassium seemed to correlate with spermatozoal motility. | Active transport system in human spermatozoa. The presence of potassium influx into human spermatozoa was investigated through the use of radioactive K42 and Rb86. A gradient of potassium and sodium has been found between the spermatozoal midpiece-tail region and seminal plasma. The influx of potassium seemed to correl... | [
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PMID:3485 | Sperm antibodies in serum and seminal plasma. | The relation between sperm antibodies (agglutinins and IF-antibodies) in serum and seminal plasma was studied in three selected groups of male partners in infertile couples with respect to specificity, concentrations and immunoglobulin classes. Agglutinins were found in seminal plasma only when they were also present i... | Sperm antibodies in serum and seminal plasma. The relation between sperm antibodies (agglutinins and IF-antibodies) in serum and seminal plasma was studied in three selected groups of male partners in infertile couples with respect to specificity, concentrations and immunoglobulin classes. Agglutinins were found in sem... | [
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PMID:3489 | [Clinical and experimental observations on idiopathic urticaria due to the contact with heat]. | This study describes the probably eleventh case, mentioned in literature, of acquired heat contact uticaria in an otherwise healthy young woman. With regard to true contact induction heat contact urticaria clearly differs from the more common cholinergic uticaria. On the other hand, heat contact urticaria is completely... | [Clinical and experimental observations on idiopathic urticaria due to the contact with heat]. This study describes the probably eleventh case, mentioned in literature, of acquired heat contact uticaria in an otherwise healthy young woman. With regard to true contact induction heat contact urticaria clearly differs fro... | [
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PMID:3487 | Fluorescence polarization studies on the binding between glutamate dehydrogenase and cytoplasmic aspartate aminotransferase. | Polarization of fluorescence measurements on aspartate aminotransferase (from pig heart cytosol) labeled with fluorescein isothiocyanate have been used to detect the formation of a soluble complex of this protein wich glutamate dehydrogenase from bovine liver. The binding of the labeled transaminase to dehydrogenase is... | Fluorescence polarization studies on the binding between glutamate dehydrogenase and cytoplasmic aspartate aminotransferase. Polarization of fluorescence measurements on aspartate aminotransferase (from pig heart cytosol) labeled with fluorescein isothiocyanate have been used to detect the formation of a soluble comple... | [
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PMID:3490 | Lubrication and cartilage. | Mechanisms of lubrication of human synovial joints have been analysed in terms of the operating conditions of the joint, the synovial fluid and articular cartilage. In the hip and knee during a walking cycle the load may rise up to four times body weight. In the knee on dropping one metre the load may go up to 25 time ... | Lubrication and cartilage. Mechanisms of lubrication of human synovial joints have been analysed in terms of the operating conditions of the joint, the synovial fluid and articular cartilage. In the hip and knee during a walking cycle the load may rise up to four times body weight. In the knee on dropping one metre the... | [
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PMID:3491 | Urea transport-defective strains of Saccharomyces cerevisiae. | Experiments characterizing the urea active transport system in Saccharomyces cerevisiae indicate that (i) formamide and acetamide are strong competitive inhibitors of urea accumulation, (ii) uptake is maximal at pH 3.3 and is 80% inhibited at pH 6.0, and (iii) adenosine 5'-triphosphate generated by glycolysis in conjun... | Urea transport-defective strains of Saccharomyces cerevisiae. Experiments characterizing the urea active transport system in Saccharomyces cerevisiae indicate that (i) formamide and acetamide are strong competitive inhibitors of urea accumulation, (ii) uptake is maximal at pH 3.3 and is 80% inhibited at pH 6.0, and (ii... | [
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PMID:3492 | Physiological factors affecting transformation of Azotobacter vinelandii. | Cells of Azotobacter vinelandii (ATCC 12837) can be transformed by exogenous deoxyribonucleic acid towards the end of exponential growth. Transformation occurs at very low frequencies when the deoxyribonucleic acid is purified or when the transformation is carried out in liquid medium. Optimal transformation occurs on ... | Physiological factors affecting transformation of Azotobacter vinelandii. Cells of Azotobacter vinelandii (ATCC 12837) can be transformed by exogenous deoxyribonucleic acid towards the end of exponential growth. Transformation occurs at very low frequencies when the deoxyribonucleic acid is purified or when the transfo... | [
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PMID:3493 | Role of D-tryptophan oxidase in D-tryptophan utilization by Escherichia coli. | Mutants of Escherichia coli K-12 that require L-tryptophan (trp) are normally unable to utilize D-tryptophan to fulfill their requirement. However, secondary mutations (dadR) that confer this ability can be isolated. In such strains two distinct enzymes are found to be produced at high levels: D-amino acid oxidase (EC ... | Role of D-tryptophan oxidase in D-tryptophan utilization by Escherichia coli. Mutants of Escherichia coli K-12 that require L-tryptophan (trp) are normally unable to utilize D-tryptophan to fulfill their requirement. However, secondary mutations (dadR) that confer this ability can be isolated. In such strains two disti... | [
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PMID:3494 | Transduction of chromosomal genes between enteric bacteria by bacteriophage P1. | We have used P1 transduction to create intergeneric hybrid strains of enteric bacteria by moving the genA and hut genes between Klebsiella aerogenes, Escherichia coli and Salmonella typhimurium. The use of E. coli as the recipient in such transductions permits the construction of episomes and specialized transducing ph... | Transduction of chromosomal genes between enteric bacteria by bacteriophage P1. We have used P1 transduction to create intergeneric hybrid strains of enteric bacteria by moving the genA and hut genes between Klebsiella aerogenes, Escherichia coli and Salmonella typhimurium. The use of E. coli as the recipient in such t... | [
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PMID:3495 | Galactoside accumulation by Escherichia coli, driven by a pH gradient. | Acidification of the external medium results in thiomethylgalactoside accumulation in an energy-depleted adenosine triphosphatase-negative mutant of Escherichia coli. | Galactoside accumulation by Escherichia coli, driven by a pH gradient. Acidification of the external medium results in thiomethylgalactoside accumulation in an energy-depleted adenosine triphosphatase-negative mutant of Escherichia coli. | [
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PMID:3496 | Adenosine 5'-monophosphate-stimulated cyanide-insensitive respiration in mitochondria of Moniliella tomentosa. | Mitochondria of the yeastlike fungus Moniliella tomentosa oxidize reduced nicotinamide adenine dinucleotide, reduced nicotinamide adenine dinucleotide phosphate, succinate, isocitrate, and lactate. These oxidations are completely inhibited by cyanide or antimycin A in mitochondria isolated from cells grown in the stand... | Adenosine 5'-monophosphate-stimulated cyanide-insensitive respiration in mitochondria of Moniliella tomentosa. Mitochondria of the yeastlike fungus Moniliella tomentosa oxidize reduced nicotinamide adenine dinucleotide, reduced nicotinamide adenine dinucleotide phosphate, succinate, isocitrate, and lactate. These oxida... | [
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PMID:3497 | Sulfate-reducing pathway in Escherichia coli involving bound intermediates. | Although a sulfate-reducing pathway in Escherichia coli involving free sulfite and sulfide has been suggested, it is shown that, as in Chlorella, a pathway involving bound intermediates is also present. E. coli extracts contained a sulfotransferase that transferred the sulfonyl group from a nucleosidephosphosulfate to ... | Sulfate-reducing pathway in Escherichia coli involving bound intermediates. Although a sulfate-reducing pathway in Escherichia coli involving free sulfite and sulfide has been suggested, it is shown that, as in Chlorella, a pathway involving bound intermediates is also present. E. coli extracts contained a sulfotransfe... | [
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PMID:3498 | An endonuclease from Escherichia coli that introduces single polynucleotide chain scissions in ultraviolet-irradiated DNA. | An endonuclease that makes single polynucleotide chain scissions in ultraviolet-irradiated DNA has been purified from Escherichia coli. The activity has the following properties: (a) unirradiated DNA is attacked very little if at all; (b) single strand DNA is not attacked, whether irradiated or not; (c) there is no req... | An endonuclease from Escherichia coli that introduces single polynucleotide chain scissions in ultraviolet-irradiated DNA. An endonuclease that makes single polynucleotide chain scissions in ultraviolet-irradiated DNA has been purified from Escherichia coli. The activity has the following properties: (a) unirradiated D... | [
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PMID:3499 | Quaternary conformational changes in human hemoglobin studied by laser photolysis of carboxyhemoglobin. | These experiments indicate that absorbance changes observed at the 425 nm isosbestic point of the Hb and HbCO following laser photolysis of HbCO provide a direct measure of the rates of quaternary conformational changes between rapidly reacting Hb (the immediate product of full photolysis) and slowly reacting normal de... | Quaternary conformational changes in human hemoglobin studied by laser photolysis of carboxyhemoglobin. These experiments indicate that absorbance changes observed at the 425 nm isosbestic point of the Hb and HbCO following laser photolysis of HbCO provide a direct measure of the rates of quaternary conformational chan... | [
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PMID:3500 | Muscarinic acetylcholine receptor from rat brain. Partial purification and characterization. | A protein capable of binding atropine and (3H)propylbenzilylcholine mustard was solubilized and purified (200-fold) from rat brain. Pronase and trypsin, but not phospholipases, diminished the binding capacity of the solubilized receptor. The molecular weight of the salt-solubilized receptor as determined by gel filtrat... | Muscarinic acetylcholine receptor from rat brain. Partial purification and characterization. A protein capable of binding atropine and (3H)propylbenzilylcholine mustard was solubilized and purified (200-fold) from rat brain. Pronase and trypsin, but not phospholipases, diminished the binding capacity of the solubilized... | [
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PMID:3501 | Quantitative relationships between phosphorylation, electron flow, and internal hydrogen ion concentrations in spinach chloroplasts. | 1. Further evidence that the uptake of [14C]hexylamine, determined by centrifugal filtration of spinach chloroplast thylakoids through silicone fluid layers, gives precise estimations of light-induced H+ concentration gradients (deltapH) is presented. DeltapH was independent of the amount of thylakoids used or of the c... | Quantitative relationships between phosphorylation, electron flow, and internal hydrogen ion concentrations in spinach chloroplasts. 1. Further evidence that the uptake of [14C]hexylamine, determined by centrifugal filtration of spinach chloroplast thylakoids through silicone fluid layers, gives precise estimations of ... | [
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PMID:3502 | Kinetic properties of human placental aromatase. Application of an assay measuring 3H2O release from 1beta,2beta-3H-androgens. | The rapid and sensitive assay of 1beta,2beta-3H-androgen aromatization by measurement of 3H2O release (Thompson, E.A., Jr., and Siiteri, P.K. (1974) J. Biol. Chem. 249, 5364-5372) has been analyzed to determine its applicability to initial rate studies. It was found that aromatization is the sole reaction catalyzed by ... | Kinetic properties of human placental aromatase. Application of an assay measuring 3H2O release from 1beta,2beta-3H-androgens. The rapid and sensitive assay of 1beta,2beta-3H-androgen aromatization by measurement of 3H2O release (Thompson, E.A., Jr., and Siiteri, P.K. (1974) J. Biol. Chem. 249, 5364-5372) has been anal... | [
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PMID:3503 | Apparent oxidation-reduction potential of Clostridium acidi-urici ferredoxin. Effect of pH, ionic strength, and amino acid replacements. | The effects of pH and ionic strength on the midpoint reduction potential (Emp) of Clostridium acidi-urici ferredoxin were determined using hydrogen gas and hydrogenase. The Emp of native ferredoxin at 24-25 degrees in 0.1 M Tris-chloride buffer, pH 7.0, is--0.434 V. In the pH range examined, the Emp becomes approximate... | Apparent oxidation-reduction potential of Clostridium acidi-urici ferredoxin. Effect of pH, ionic strength, and amino acid replacements. The effects of pH and ionic strength on the midpoint reduction potential (Emp) of Clostridium acidi-urici ferredoxin were determined using hydrogen gas and hydrogenase. The Emp of nat... | [
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PMID:3504 | A deoxyribonucleic acid kinase from nuclei of rat liver. Purification and properties. | A DNA kinase has been partially purified from rat liver nuclei by a procedure which also yields DNA ligase. The kinase uses ATP to phosphorylate specifically the 5'-hydroxyl termini of oligodeoxynucleotides and of single- or double-stranded DNA, yielding 5'-phosphate termini and ADP. The kinase is inactive on RNA, or o... | A deoxyribonucleic acid kinase from nuclei of rat liver. Purification and properties. A DNA kinase has been partially purified from rat liver nuclei by a procedure which also yields DNA ligase. The kinase uses ATP to phosphorylate specifically the 5'-hydroxyl termini of oligodeoxynucleotides and of single- or double-st... | [
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PMID:3505 | Hydrogen exchange at the amide group of reduced pyridine nucleotides and the inhibition of that reaction by dehydrogenases. | Stopped flow ultraviolet spectroscopy has been used to measure the rate of hydrogen exchange with solvent at the amide group of reduced nicotinamide nucleotide coenzymes. Several mechanisms for the exchange reaction are considered in the light of the kinetic data. Complex formation between the coenzyme and any of four ... | Hydrogen exchange at the amide group of reduced pyridine nucleotides and the inhibition of that reaction by dehydrogenases. Stopped flow ultraviolet spectroscopy has been used to measure the rate of hydrogen exchange with solvent at the amide group of reduced nicotinamide nucleotide coenzymes. Several mechanisms for th... | [
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PMID:3508 | A Dacron wool packed-bed extracorporeal reactor: a kinetic study of immobilized Escherichia coli II L-asparaginase. | An extracorporeal reactor containing a packed bed of Dacron fibers has been developed. Escherichia coli II L-asparaginase was coupled to the Dacron using gamma-aminopropyltriethoxysilane and glutaraldehyde. The preparation had an activity of 37 IU per gram of Dacron (37 degrees C). The apparent Km was studied as a func... | A Dacron wool packed-bed extracorporeal reactor: a kinetic study of immobilized Escherichia coli II L-asparaginase. An extracorporeal reactor containing a packed bed of Dacron fibers has been developed. Escherichia coli II L-asparaginase was coupled to the Dacron using gamma-aminopropyltriethoxysilane and glutaraldehyd... | [
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PMID:3509 | Isolation of intact megakaryocytes from guinea pig femoral marrow. Successful harvest made possible with inhibitions of platelet aggregation; enrichment achieved with a two-step separation technique. | Methods have been devised to harvest megakaryocytes from guinea pig femoral marrow and to isolate them in high yield. When marrow tissue was disaggregated the megakaryocytes underwent degenerative changes characterized by the loss of cytoplasmic granules and alterations in membrane topography, similar to the changes se... | Isolation of intact megakaryocytes from guinea pig femoral marrow. Successful harvest made possible with inhibitions of platelet aggregation; enrichment achieved with a two-step separation technique. Methods have been devised to harvest megakaryocytes from guinea pig femoral marrow and to isolate them in high yield. Wh... | [
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PMID:3510 | The polymerization of actin. III. Aggregates of nonfilamentous actin and its associated proteins: a storage form of actin. | When echinoderm sperm are treated with the detergent Triton X-100 at pH 6.4 in 10 mM phosphate buffer, the membranes are solubilized, but the actin which is located in the periacrosomal region remains as a phase-dense cup. These cups can be isolated free from the flagella and chromatin and can be solubilized by increas... | The polymerization of actin. III. Aggregates of nonfilamentous actin and its associated proteins: a storage form of actin. When echinoderm sperm are treated with the detergent Triton X-100 at pH 6.4 in 10 mM phosphate buffer, the membranes are solubilized, but the actin which is located in the periacrosomal region rema... | [
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PMID:3511 | Degradation of abnormal proteins in HeLa cells. | The experiments show that abnoramal proteins are degraded faster than normal ones in HeLa cells. Among the fragmentary proteins made in the presence of puromycin, those with low molecular weight are least stable. Proteins made after incubation with 5-fluorouracil or in the presence of some amino acid analogues are also... | Degradation of abnormal proteins in HeLa cells. The experiments show that abnoramal proteins are degraded faster than normal ones in HeLa cells. Among the fragmentary proteins made in the presence of puromycin, those with low molecular weight are least stable. Proteins made after incubation with 5-fluorouracil or in th... | [
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PMID:3512 | The effect of pH on incorporation of galactose by a normal human cell line and cell lines from patients with defective galactose metabolism. | Incorporation of radioactive galactose into TCA-insoluble material of galactosemic fibroblasts is more sensitive to low pH than is the incorporation by normal human fibroblasts. This study was undertaken to determine (1) whether there was any pH which could correct or counteract the galactosemic defect relative to gala... | The effect of pH on incorporation of galactose by a normal human cell line and cell lines from patients with defective galactose metabolism. Incorporation of radioactive galactose into TCA-insoluble material of galactosemic fibroblasts is more sensitive to low pH than is the incorporation by normal human fibroblasts. T... | [
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PMID:3514 | Chromatography of hemoglobins on CM-cellulose with bis-tris and sodium chloride developers. | CM-Cellulose as an ion-exchange medium with Bis-tris as buffer and a gradient of sodium chloride provides a versatile system for the chromatography of hemoglobins. Changes in pH, Bis-tris concentration, and slope of the sodium chloride grandient provide means for markedly altering chromatographic behavior for special s... | Chromatography of hemoglobins on CM-cellulose with bis-tris and sodium chloride developers. CM-Cellulose as an ion-exchange medium with Bis-tris as buffer and a gradient of sodium chloride provides a versatile system for the chromatography of hemoglobins. Changes in pH, Bis-tris concentration, and slope of the sodium c... | [
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PMID:3515 | The determination of phanquone in biological material by gas-liquid chromatography. | A gas-liquid chromatographic method for the quantitative determination of phanquone is described, based on the formation of a dimethoxine prior to its extraction from biological material. The sensitivity of the procedure is about 15 ng/ml in biological fluid. | The determination of phanquone in biological material by gas-liquid chromatography. A gas-liquid chromatographic method for the quantitative determination of phanquone is described, based on the formation of a dimethoxine prior to its extraction from biological material. The sensitivity of the procedure is about 15 ng/... | [
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PMID:3516 | Stability of fluorescent antibody conjugates stored under various conditions. | Two experiments were carried out to determine the stability of fluorescent antibody conjugates. In experiment 1, Francisella tularemia conjugates in the lyophilized state retained their original staining titer for 1,294 days when stored at 25, 4 to 5, and -20 C; at 37 C the conjugates were stable for at least 65 days. ... | Stability of fluorescent antibody conjugates stored under various conditions. Two experiments were carried out to determine the stability of fluorescent antibody conjugates. In experiment 1, Francisella tularemia conjugates in the lyophilized state retained their original staining titer for 1,294 days when stored at 25... | [
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PMID:3517 | Inactivation of viruses in serum with binary ethyleneimine. | The inactivation os six strains from three different groups of viruses with 0.001 M binary ethyleneimine at 37 C proceeded at the same rate in either bovine serum or cell culture medium. The inactivant did not impair the growth-promoting capacity of bovine serum used in cell culture, nor did it affect the antibody acti... | Inactivation of viruses in serum with binary ethyleneimine. The inactivation os six strains from three different groups of viruses with 0.001 M binary ethyleneimine at 37 C proceeded at the same rate in either bovine serum or cell culture medium. The inactivant did not impair the growth-promoting capacity of bovine ser... | [
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PMID:3518 | Inorganic phosphate homeostasis. Renal adaptation to the dietary intake in intact and thyroparathyroidectomized rats. | The possibility of renal tubular adaptation to variations in dietary inorganic phosphate (Pi) was investigated in intact and thyroparathyroidectomized (TPTX) rats pair-fed diets containing low, normal, and high amounts of Pi for periods up to 10 days. Clearances were measured before and during active i.v. infusions wit... | Inorganic phosphate homeostasis. Renal adaptation to the dietary intake in intact and thyroparathyroidectomized rats. The possibility of renal tubular adaptation to variations in dietary inorganic phosphate (Pi) was investigated in intact and thyroparathyroidectomized (TPTX) rats pair-fed diets containing low, normal, ... | [
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PMID:3519 | Effect of beta adrenergic blockade on renin response to renal nerve stimulation. | The ability of d,l-propranolol to block renin secretion in response to various extrarenal stimuli, such as hemorrhage and hypoglycemia, has been interpreted to indicate the presence of an intrarenal beta receptor regulating renin release. However, two problems complicate this interpretation: (a) the stimuli have effect... | Effect of beta adrenergic blockade on renin response to renal nerve stimulation. The ability of d,l-propranolol to block renin secretion in response to various extrarenal stimuli, such as hemorrhage and hypoglycemia, has been interpreted to indicate the presence of an intrarenal beta receptor regulating renin release. ... | [
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PMID:3520 | Identification and characterization of a bile acid receptor in isolated liver surface membranes. | It is generally assumed that hepatic transport of bile acids is a carrier-mediated process. However, the basic mechanisms by which these organic anions are translocated across the liver cell surface membrane are not well understood. Since carrier-mediated transport involved binding of the transported molecule to specif... | Identification and characterization of a bile acid receptor in isolated liver surface membranes. It is generally assumed that hepatic transport of bile acids is a carrier-mediated process. However, the basic mechanisms by which these organic anions are translocated across the liver cell surface membrane are not well un... | [
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PMID:3521 | A brief anxiety rating scale in evaluating anxiolytics. | The Wang Anxiety Rating Scale (WARS) was designed to evaluate degrees of anxiety in patients receiving anxiolytic medication. WARS contains 12 pertinent symptoms of anxiety: nervousness, restlessness, excitability, irritability, worrying, disturbed concentration, palpitation, insomnia, hostility, tremors, smoking, and ... | A brief anxiety rating scale in evaluating anxiolytics. The Wang Anxiety Rating Scale (WARS) was designed to evaluate degrees of anxiety in patients receiving anxiolytic medication. WARS contains 12 pertinent symptoms of anxiety: nervousness, restlessness, excitability, irritability, worrying, disturbed concentration, ... | [
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PMID:3545 | The changing pattern of bacterial sepsis since the introduction of antibiotic therapy. | During the six-year period, 1968-1973, sepsis developed in 1 of every 80 patients admitted to the Presbyterian Hospital, New York. In 1 of 133 patients the sepsis was due to Gram-positive organisms, and in 1 of 188 patients to Gram-negative organisms. The mortality rate for Gram-positive cases was 4.4 percent, for Gram... | The changing pattern of bacterial sepsis since the introduction of antibiotic therapy. During the six-year period, 1968-1973, sepsis developed in 1 of every 80 patients admitted to the Presbyterian Hospital, New York. In 1 of 133 patients the sepsis was due to Gram-positive organisms, and in 1 of 188 patients to Gram-n... | [
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PMID:3546 | [Has the pH meter replaced the Apgar score?]. | The introduction of measuring the pH appears to place it in competition with Apgar scoring because of its precision. A study of this which has been carried out has illustrated that there are two different criteria for assessing the state of the infant at birth. The usual agreement between pH values and Apgar scoring ca... | [Has the pH meter replaced the Apgar score?]. The introduction of measuring the pH appears to place it in competition with Apgar scoring because of its precision. A study of this which has been carried out has illustrated that there are two different criteria for assessing the state of the infant at birth. The usual ag... | [
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PMID:3604 | Kinetics of the antibody response to type III pneumococcal polysaccharide. I. Evidence that suppressor cells function by inhibiting the recruitment and proliferation of antibody-producing cells. | For the first 126 hr after immunization of mice with an optimally immunogenic dose (0.5 mug) of Type III pneumococcal polysaccharide (SSS-III), splenic antibody-forming PFC and serum antibody levels were measured at 2- and 8-hr intervals, respectively. PFC were detected at 28 hr after immunization and then increased th... | Kinetics of the antibody response to type III pneumococcal polysaccharide. I. Evidence that suppressor cells function by inhibiting the recruitment and proliferation of antibody-producing cells. For the first 126 hr after immunization of mice with an optimally immunogenic dose (0.5 mug) of Type III pneumococcal polysac... | [
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