Gastric secretion during anaesthesia and its inhibition by metiamide and other drugs.

The histamine H2-receptor antagonist, metiamide, inhibits the acid gastric secretion produced by chloralose-urethane anaesthesia in dogs carrying gastric cannulae chronically. This secretion is also prevented by atropine and hexamethonium. "Spontaneous" gastric secretion of vagal origin in conscious dogs is also blocked by metiamide.     

Influence of metiamide and atropine on pepsinogen secretion in the conscious rat

Activity of peptic cells is influenced directly by cholinolytic or cholinergic agents. Histamine H2-antagonists influence the activity of the chief cells through changes of acidity of gastric juice.     

Influence of metiamide and atropine on pepsinogen secretion in the conscious rat

Summary Activity of peptic cells is influenced directly by cholinolytic or cholinergic agents. Histamine H₂-antagonists influence the activity of the chief cells through changes of acidity of gastric juice.Acknowledgment. The authors are indebted to J. Angus for valuable advice.     

Reversible inhibition by CCl4 of bile secretion during isolated liver perfusion

Zusammenfassung Durch kurzzeitige Applikation von gasförmigem Tetrachlorkohlenstoff während Leberperfusion tritt eine rasche und reversibel verlaufende Gallesekretionshemmung ein. Diese Hemmung könnte auf Veränderungen von Transport- oder Permeabilitätseigenschaften der Leberzellmembran durch CCl₄ zurückgeführt werden.     

Modification of clonazepam anticonvulsive activity by its association with other anti-epileptic drugs

Summary The modification of the anti-epileptic activity of clonazepam by other anticonvulsivants is studied. The results vary according to the drug and technique used. The usefulness of the 2 techniques employed is discussed.     

Antagonism of catecholamine inhibition of insulin secretion by methysergide

Zusammenfassung Isoliertes Maus-, Hamster- und Kaninchenpankreas wurde in einer physiologischen Pufferlösung mit 3,0 mg/ml Glukose inkubiert. Dopamin ruft eine erhebliche Verringerung der radioimmunologisch reagierenden Insulinsekretion hervor. Die durch Dopamin ausgelöste Hemmung lässt sich teilweise oder vollständig durch den Serotoninantagonisten 1-Methyl-d-lysergsäure butanolamid (Deseril) aufheben.

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Supported by grants from the National Institute of Arthritis and Metabolic Diseases of the National Institutes of Health No. AM 01324, No. 5 T1 AM 5074 and No. K3 AM 17,954 and a Clinical Investigatorship from the Veterans Administration (JMF).     

Reduction of body fat stores by inhibition of prolactin secretion

Reductions of prolactin secretion by bromocriptine treatment for 24 days reduced fat stores (abdominal and epididymal fat depots) in hamsters by 25-49% compared with control animals. However, body weights and food consumption were not affected. These results further substantiate an important role for prolactin in regulation of fat metabolism and indicate that bromocriptine might be used to decrease fat stores.     

Reduction of body fat stores by inhibition of prolactin secretion

Summary Reductions of prolactin secretion by bromocriptine treatment for 24 days reduced fat stores (abdominal and epididymal fat depots) in hamsters by 25–49% compared with control animals. However, body weights and food consumption were not affected. These results further substantiate an important role for prolactin in regulation of fat metabolism and indicate that bromocriptine might be used to decrease fat stores.     

A study of vasoactive intestinal polypeptide (VIP) stimulated intestinal fluid secretion in rat and its inhibition by indomethacin

Summary 4 groups of rats were studied under anaesthesia to assess the effect of VIP and the influence of the prostaglandin synthetase inhibitor indomethacin in isolated bowel loops. VIP produced a highly significant increase in the luminal fluid content and this was completely inhibited by addition of indomethacin.     

A study of vasoactive intestinal polypeptide (VIP) stimulated intestinal fluid secretion in rat and its inhibition by indomethacin

4 groups of rats were studied under anaesthesia to assess the effect of VIP and the influence of the prostaglandin synthetase inhibitor indomethacin in isolated bowel loops. VIP produced a highly significant increase in the luminal fluid content and this was completely inhibited by addition of indomethacin.     

In vitro inhibition of anaerobic glycolysis by phenothiazine ataractic drugs

Zusammenfassung Im Gegensatz zu Feststellungen anderer Forscher hemmten Chlorpromazin und zwei strukturell verwandte ataraktisch wirkende Phenothiazinderivate die anaerobe Glykolyse von homogenisiertem Rattenhirn. Der Nachweis dieser Hemmung bedarf einer längeren Inkubation, was auf die Mitwirkung eines zeitbedingten Vorgangs, wie metabolische Umwandlung der Phenothiazine in Hemmstoffe, deutet.     

Inhibition of lymphocyte blastogenesis by diazepam, meprobamate, and other psychotropic drugs]

Imipramine, diazepam, chlordiazepoxide, and meprobamate inhibit incorporation of 3H-thymidine in human lymphocytes in culture. For the first three drugs, 50% inhibition occurs at a concentration of 5 X 10(-5) M, and for meprobamate at a concentration of 10(-3 M. Ethanol has no action up to 10(-1) M.     

Circling behavior induced by phencyclidine in mice and its inhibition by naloxone

Phencyclidine (PCP), when given to mice, induces general hyperactivity and rapid circling, similar to that caused by morphine. These effects are partially antagonized by naloxone.     

Oxidation of vanillin by cream xanthine oxidase and its inhibition by allopurinol

Zusammenfassung Es wird gezeigt, dass Vanillin durch Xanthinoxydase oxydiert und dass diese Reaktion durch Allopurinol gehemmt wird.