A. Materia, I. Modlin, D. Albert
Jan 31, 1981
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Regulatory Peptides
Abstract
We studied the effect of the intravenous infusion of 16,16-dimethylprostaglandin E2 methyl ester (di-M-PGE2) and somatostatin on bombesin-stimulated gastric acid secretion, plasma gastrin and plasma pancreatic polypeptide in four chronic gastric fistula dogs. Bombesin-stimulated gastric acid secretion was significantly inhibited by somatostatin and virtually abolished by di-M-PGE2. Both agents caused significant, but indistinguishable inhibition of gastrin release (P less than 0.05). Bombesin-stimulated pancreatic polypeptide release was also significantly inhibited by both somatostatin and di-M-PGE2; the inhibitory effect of somatostatin was significantly greater than that of di-M-PGE2 (P less than 0.05). This study provides further evidence in support of the complex interrelationships between agents responsible for the modulation of gastrointestinal physiology.