Peptide YY (PYY), also known as peptide tyrosine tyrosine, is a peptide that in humans is encoded by the PYY gene.[5] Peptide YY is a short (36-amino acid) peptide released from cells in the ileum and colon in response to feeding. In the blood, gut, and other elements of periphery, PYY acts to reduce appetite; similarly, when injected directly into the central nervous system, PYY is also anorexigenic, i.e., it reduces appetite.[6]
Dietary fibers from fruits, vegetables, and whole grains, consumed, increase the speed of transit of intestinal chyme into the ileum, to raise PYY3-36, and induce satiety. Peptide YY cannot be produced as the result of enzymatic breakdown of crude fish proteins and ingested as a food product.[7]
^ abcGRCh38: Ensembl release 89: ENSG00000131096 – Ensembl, May 2017
^ abcGRCm38: Ensembl release 89: ENSMUSG00000017311 – Ensembl, May 2017
^"Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
^"Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
^EntrezGene 5697
^Woods SC, D'Alessio DA (November 2008). "Central control of body weight and appetite". The Journal of Clinical Endocrinology and Metabolism. 93 (11 Suppl 1): S37–S50. doi:10.1210/jc.2008-1630. PMC 2585760. PMID 18987269.
^Murashita K, Kurokawa T, Nilsen TO, Rønnestad I (February 2009). "Ghrelin, cholecystokinin, and peptide YY in Atlantic salmon (Salmo salar): molecular cloning and tissue expression". General and Comparative Endocrinology. 160 (3): 223–235. doi:10.1016/j.ygcen.2008.11.024. PMID 19073185.
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