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Medical Term:

vasoactive intestinal polypeptide


Definition: a polypeptide hormone secreted most commonly by non-β islet cell tumors of the pancreas; VIP increases the rate of glycogenolysis and stimulates pancreatic bicarbonate secretion; excess production causes copious watery diarrhea and fecal electrolyte loss, with hypokalemia and hypochlorhydria.

Synonym(s): vasoactive intestinal peptide