The Effect of Somatostatin on Bombesin-Stimulated Serum Gastrin and Gastric Acid Secretion in Man

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Abstract
The effect of intravenous somatostatin on bombesin-stimulated serum gastrin and gastric acid secretion was studied in 5 healthy subjects. Somatostatin, 100 ng/kg/min, significantly inhibited serum gastrin and gastric acid responses to infusion of bombesin-tetradecapeptide in a dose of 2.5 ng/kg/min. Inhibition of gastrin release could not fully account for the inhibition of gastric acid secretion. Since both bombesin and somatostatin are present in the antrum of man, interrelations between these peptides might be involved in gastrin release from the antrum.