Peptide YY human has been used as a supplement in Roswell Park Memorial Institute medium (RPMI medium) to culture pancreatic duct-derived cells.
Human peptide YY (PYY) is secreted by mucosal L cells in the distal ileum, colon and rectum. It consists of 36 amino acids. The gene encoding PYY is localized on human chromosome 17q21.1.
Gut hormone that inhibits both secretin and cholecystokinin-stimulated pancreatic secretion. Endogenous nonselective agonist at NPY receptors.
Peptide YY is capable of strongly inhibiting secretin-stimulated pancreatic secretion. A very low dose of Peptide YY (10-20 pmol/kg) significantly decreases the pancreatic secretion of bicarbonate as well as fluid that is stimulated by a single dose of secretin (0.1 unit/kg). A dose of Peptide YY of 100-200 pmol/kg causes a 70-80% reduction of the pancreatic bicarbonate and fluid secretion[3]. Peptide YY is localised to blood vessels and atherosclerotic plaques of rabbits. It causes vasoconstriction of the vascular tree[2].
