The role of pancreatic polypeptide in the regulation of energy homeostasis

Neeta Khandekar, Britt A. Berning, Amanda Sainsbury, Shu Lin*

*Corresponding author for this work

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Imbalances in normal regulation of food intake can cause obesity and related disorders. Inadequate therapies for such disorders necessitate better understanding of mechanisms that regulate energy homeostasis. Pancreatic polypeptide (PP), a robust anorexigenic hormone, effectively modulates food intake and energy homeostasis, thus potentially aiding anti-obesity therapeutics. Intra-gastric and intra-intestinal infusion of nutrients stimulate PP secretion from the gastrointestinal tract, leading to vagal stimulation that mediates complex actions via the neuropeptide Y4 receptor in arcuate nucleus of the hypothalamus, subsequently activating key hypothalamic nuclei and dorsal vagal complex of the brainstem to influence energy homeostasis and body composition. Novel studies indicate affinity of PP for the relatively underexplored neuropeptide y6 receptor, mediating actions via the suprachiasmatic nucleus and pathways involving vasoactive intestinal polypeptide and insulin like growth factor 1. This review highlights detailed mechanisms by which PP mediates its actions on energy balance through various areas in the brain.

Original languageEnglish
Pages (from-to)33-41
Number of pages9
JournalMolecular and Cellular Endocrinology
Volume418
DOIs
Publication statusPublished - 15 Dec 2015
Externally publishedYes

Keywords

  • Pancreatic polypeptide (PP)
  • Neuropeptide Y (NPY)
  • Food intake
  • Neuronal pathway

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