Neuropeptide Y, human

Neuropeptide Y (NPY) is a vasoconstrictor and a brain peptide that inhibits Ca2+-activated K+ channels in vascular smooth muscle. Neuropeptide Y (NPY) is implicated in the control of blood pressure, sexual behavior, and food intake. Neuropeptide Y (NPY) inhibits cholecystokinin- and secretin-stimulated pancreatic secretion.