peptide YY


pep·tide YY

(pep'tīd) A hormone released by the small intestine to signal the brain to stop eating.

peptide YY

An appetite-regulating protein released by L cells of the mucosa of the gastrointestinal tract in response to a meal. It binds to cells in the arcuate nucleus of the brain, decreases the desire to eat, and creates a feeling of fullness. See also: peptide