PMID: 2510252Jan 1, 1989Paper

Gastric antisecretory and antigastrolesive pharmacology of rioprostil

Scandinavian Journal of Gastroenterology. Supplement
D A ShriverM E Rosenthale

Abstract

Rioprostil, a primary alcohol prostaglandin E1 analogue, inhibits gastric acid secretion, both in vivo and in vitro, and prevents the formation of experimentally-induced gastric lesions in rats and dogs. In vitro experimental evidence suggests that the mechanism of the gastric antisecretory activity of rioprostil involves inhibition of the membrane bound histamine-stimulated adenylate cyclase. In vivo, rioprostil inhibits gastric acid secretion in 4-h pylorus-ligated rats, in gastric fistula dogs stimulated by betazole, tetragastrin, bethanechol, or 2-deoxy-D-glucose, and in Heidenhain pouch dogs stimulated by food. Rioprostil can completely prevent macroscopically visible gastric lesions induced by a variety of noxious agents in rats, including 50% ethanol, aspirin, indomethacin, strong acid, strong base and hypertonic saline. In dogs, rioprostil, but not the H2-blockers cimetidine or ranitidine, totally prevents endoscopically visible gastric lesions induced by aspirin tablets or 60% ethanol, and accelerates the healing of established aspirin-induced gastric lesions from 20 days (vehicle control) to 6 days (33 micrograms/kg p.o., t.i.d.) or 11 days (3 micrograms/kg p.o., t.i.d.). The precise mechanism for the antigastrolesive...Continue Reading

References

May 3, 1979·The New England Journal of Medicine·D H Van ThielG Paul
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Mar 1, 1987·Postgraduate Medicine·D B Wilson

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Citations

Jan 1, 1989·Scandinavian Journal of Gastroenterology. Supplement·H KoopR Arnold

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