Protective action of omeprazole, a benzimidazole derivative, on gastric mucosal damage by aspirin and ethanol in rats.

Abstract:

:This study was designed to compare the influence of omeprazole, a potent inhibitor of H+/K+-ATP-ase involved in the final step of H+ secretion and prostaglandin (PG) I2 on the formation of gastric mucosal lesions induced by absolute ethanol or acidified aspirin (ASA). Omeprazole given intragastrically in both inhibitory (20 or 200 mumol/kg) and noninhibitory doses (2 mumol/kg) prevented dose dependently ASA- and ethanol-induced gastric lesions. The protective effect of omeprazole against ASA-induced lesions occurred when mucosal generation of PGs was completely suppressed and that against ethanol lesions when PG generation was increased above normal values. Pretreatment with PGI2 given intragastrically or subcutaneously both in inhibitory and noninhibitory doses prevented almost completely the formation of gastric mucosal lesions caused by both absolute ethanol and acidified ASA. This study indicates that omeprazole is capable of protecting gastric mucosa against ASA- and ethanol-induced injury and that this protection is unrelated to gastric inhibition or the biosynthesis of mucosal PGs.

journal_name

Digestion

journal_title

Digestion

authors

Konturek SJ,Brzozowski T,Radecki T

doi

10.1159/000198946

subject

Has Abstract

pub_date

1983-01-01 00:00:00

pages

159-64

issue

3

eissn

0012-2823

issn

1421-9867

journal_volume

27

pub_type

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    pub_type: 杂志文章

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