Abstract
The effects of prostaglandin E2 (PGE2), 15-methyl prostaglandin E2 (15M), and 16,16-dimethyl prostaglandin E2 (16DM) on gastric mucus and nonparietal cell secretion in rats were measured. Alcian blue binding was used as a measure of gastric mucus. Applied topically, all three agents stimulated nonparietal cell secretion, and PGE2 and 16DM stimulated the secretion of mucus, increasing the fraction in the gastric contents but not that adherent to the mucosa. Topical 15M did not stimulate the production of mucus. Given intranveously, all three agents increased the amount of mucus in the gastric contents without altering the amount of mucus bound to the mucosa. The prostaglandins had no effect on nonparietal cell secretion when given intravenously. These effects could be relevant to the ability of the E2 prostaglandins to protect the gastric mucosa from damage.
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