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  • Title: Human gastrin-releasing peptide: biological potency in humans.
    Author: Hildebrand P, Werth B, Beglinger C, Delco F, Jansen JB, Lamers CB, Gyr K.
    Journal: Regul Pept; 1991 Nov 26; 36(3):423-33. PubMed ID: 1811276.
    Abstract:
    Gastrin-releasing peptide (GRP) was infused in graded doses (1-27 pmol/kg per h) to healthy human volunteers to study the effects on gastric, pancreatic and gallbladder functions as well as on gastrin, CCK and PP release. The results were compared to equimolar doses of synthetic bombesin. GRP significantly (P less than 0.05) stimulated gastric and pancreatic secretory responses, gallbladder contraction and gastro-enteropancreatic hormone release in a dose-dependent manner. GRP was found to be equipotent to bombesin with respect to gastric acid secretion, pancreatic enzyme output, gallbladder contraction and plasma hormone release. We conclude (a) that human GRP has similar biologic effects as synthetic bombesin; (b) as GRP is localized exclusively in nerve tissue and has potent effects on different organs, it is a likely candidate for peptidergic control of human gastric, pancreatic and gallbladder functions.
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