neuropeptide Y


neu·ro·pep·tide Y

[MIM*162640] a 36-amino acid peptide neurotransmitter found in the brain and autonomic nervous system. It augments the vasoconstrictor effects of noradrenergic neurons.

neu·ro·pep·tide Y

(NPY) (nū'rō-pep'tīd) A 36-amino acid peptide expressed in most regions of the central nervous system including the cortex, hypothalamus, thalamus, olfactory bulb, amygdala, and hippocampus, as well as the peripheral neurons of the sympathetic nervous system. Responsible for regulating various physiologic functions including feeding behavior, reproductive behavior, circadian rhythms, cardiovascular responses, memory, and stress response.