Function
This peptide hormone induces gall bladder contraction and the release of pancreatic enzymes in the gut. Its function in the brain is not clear. Binding to CCK-A receptors stimulates amylase release from the pancreas, binding to CCK-B receptors stimulates gastric acid secretion. cholecystokinin 58 and cholecystokinin 8, but not cholecystokinin 58 desnonopeptide, stimulate amylase release from the pancreas. cholecystokinin 58, but not cholecystokinin 8, increases bile-pancreatic volume.