Prostaglandin e analogue inhibition of intrinsic factor release

K. A. Zucker, T. E. Adrian, G. H. Ballantyne, I. M. Modlin

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

In many mammalian species (including humans) the parietal cell secretes both acid and intrinsic factor (IF). The aim of this study was to examine the direct effect of prostaglandin E analogues on basal and stimulated IF release in isolated, enriched rabbit parietal cells. The effects of graded concentrations (10-12 to 10-6 M) of 16,16-dimethyl prostaglandin E2 (DMPGE2) and 16-methyl,16-hydroxyl prostaglandin E, (misoprostol) on submaximal histamine-stimulated (10-6 M) secretion were tested. Both analogues failed to alter basal release of IF or aminopyrine accumulation (indirect measure of acid secretion). Increasing concentrations of DMPGE2 resulted in a dose-dependent inhibition of IF release (22 ± 8% decrease at 10-9 M; p < 0.05) and a maximal effective response at 10-7 M (54 ± 9%; p < 0.005). Dose-dependent inhibition of IF secretion was also observed with increasing concentrations of misoprostol, with a 22 ± 7% decrease at 10-9 M (p < 0.05) and maximal effective inhibition at 10-6 M (47 ± 8%; p < 0.01). Misoprostol and DMPGE2 inhibition of acid secretion paralleled IF release. Prostaglandin analogues appear to block IF release potently in histamine-stimulated parietal cells.

Original languageEnglish
Pages (from-to)650-654
Number of pages5
JournalScandinavian Journal of Gastroenterology
Volume23
Issue number6
DOIs
Publication statusPublished - 1988
Externally publishedYes

Keywords

  • Intrinsic factor
  • Parietal cell
  • Prostaglandin analogues

ASJC Scopus subject areas

  • Gastroenterology

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