The Increase in Cyclic AMP Content in the Isolated Guinea Pig Gastric Mucosa During Histamine-stimulated Acid Secretion

Overview

Journal Gastroenterol Jpn

Specialty Gastroenterology

Date 1980 Jan 1

PMID 6256252

Authors

T Shirakawa

H Matsumoto

K Ohe

A Miyoshi

Affiliations

Soon will be listed here.

Abstract

Using the isolated guinea pig gastric mucosa perfused in vitro with a constant acid secretion and potential difference, the cyclic AMP (cAMP) contents in the gastric mucosa and in the serosal solution were measured during the course of acid secretion stimulated by histamine or dibutyryl cyclic AMP (db-cAMP). (1) The acid-secreting response of the gastric mucosa to histamine was reproduced by addition of db-cAMP. (2) The acid secretion stimulated by db-cAMP was not inhibited. (3) The increase in mucosal cAMP content was accompanied by histamine-stimulated acid secretion. (4) The increase in the mucosal cAMP content preceded the increase in acid secretion stimulated by histamine. From these findings, it has been concluded that cAMP plays an important role in the mechanism of histamine-stimulated acid secretion, including the morphological transformation of parietal cells, although its role as the intracellular mediator of the stimuli for the hydrogen ion pump itself requires further investigation.

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