title: Effect of gut peptides on glucose-stimulated insulin release by monolayer cultures of neonatal rat islet cells.
abstract: Gastric inhibitory polypeptide (GIP), pancreatic polypeptide (PP), glucagon, vasoactive intestinal polypeptide (VIP), bombesin, neurotensin, substance P, and cholecystokinin octapeptide (CCK-OP) were examined for their effects upon glucose-stimulated insulin secretion in denervated and isolated islet cells, namely, monolayer cultures of dispersed neonatal rat pancreatic islet cells. Only glucagon (14 nM), GIP (10 and 20 nM), and CCK-OP (20 nM) enhanced glucose-stimulated insulin release during a 60-min incubation period. None of the others altered insulin secretion under the conditions employed, although reported to influence insulin release in other systems.
mesh_terms: D000818:Animals; D046508:Culture Techniques; D005768:Gastrointestinal Hormones / Q000494:pharmacology*; D005947:Glucose / Q000494:pharmacology; D007328:Insulin / Q000378:metabolism*; D000078790:Insulin Secretion; D007515:Islets of Langerhans / Q000378:metabolism*; D051381:Rats; D012636:Secretory Rate / Q000187:drug effects
chemical_list: D005768:Gastrointestinal Hormones; D007328:Insulin; D005947:Glucose