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1991:
Halter F; Schürer-Maly C C
Aspects of the role of prostaglandins in gastrin histamine regulation of gastric acid secretion.
Scandinavian journal of gastroenterology. Supplement 1991;
180(
):.
There is convincing evidence from in vitro studies that prostaglandins interfere with the gastrin histamine regulation of gastric acid secretion in an opposing manner. They can inhibit the action of histamine on the parietal cell when given as single-dose treatment. Conversely, when given at high doses, they liberate endogenous histamine, probably from nonparietal cells. In in vivo experiments prostaglandins are potent inhibitors of acid secretion when studied with single-dose treatment but are capable of stimulating basal acid secretion when chronically applied to rats. Studies performed in whole animal preparations on the effect of cyclooxygenase inhibitors have not fully clarified which of these two histamine-modulating effects of prostaglandins is of prime physiologic significance but favour suppression of histamine activity with subsequent acid inhibition. It appears that somatostatin release is the mechanism through which prostaglandin can simultaneously inhibit acid secretion and release plasma gastrin. At least in the rat, the pattern of plasma gastrin and somatostatin release is, similarly to acid secretion, partly reversed during prolonged prostaglandin treatment.
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