Abstract
In dispersed acini prepared from guinea pig pancreas, peptides isolated from amphibian skin (caerulein, bombesin, litorin, and physalaemin) as well as eledoisin, a peptide isolated from the posterior salivary gland of a Mediterranean octopod, caused a significant increase in amylase release. Each amphibian peptide potentiated the stimulation of amylase release caused by vasoactive intestinal peptide or secretin in that the increase in amylase release caused by an amphibian peptide plus vasoactive intestinal peptide or secretin was significantly greater than the sum of the increase caused by each secretagogue acting alone. Potentiation of amylase secretion did not occur with an amphibian peptide plus cholecystokinin or carbachol.
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