Papers

Peer-reviewed
8 2009

Effect of nociceptin/orphanin FQ on feeding behavior and hypothalamic neuropeptide expression in layer-type chicks

GENERAL AND COMPARATIVE ENDOCRINOLOGY
  • Takashi Bungo
  • ,
  • Jun-ichi Shiraishi
  • ,
  • Kouichi Yanagita
  • ,
  • Yoshiyuki Ohta
  • ,
  • Masanori Fujita

Volume
163
Number
1-2
First page
47
Last page
51
Language
English
Publishing type
Research paper (scientific journal)
DOI
10.1016/j.ygcen.2009.03.009
Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE

Nociceptin/orphanin FQ (N/OFQ) was identified in 1995 as the endogenous ligand for the orphan Gi/G coupled opioid receptor-like 1 receptor (NOPI). Exogenous N/OFQ increases food intake in mammals, but its effect and mode of action in chicks are not fully known. We report herein that N/OFQ(5.0 nmol) has a stimulatory effect on food intake in layer-type chicks over a 2-h period after intracerebroventricular (icv) injection. Thirty minutes after central injection of N/CFQ (5.0 nmol) the concentration of agouti-related protein (AGRP) mRNA in the diencephalon increased, while cocaine- and amphetamine-regulated transcript (CART) mRNA decreased. However, concentrations of neuropeptide Y, proopiomelanocortin and glutamate decarboxylase mRNAs, and of catecholamines and excitatory amino acids were not affected. Simultaneous administration of alpha-melanocyte stimulating hormone (alpha-MSH: 1.0 pmol), a competitor of ACRP, completely blocked the orexigenic effect of N/OFQ (5.0 nmol). These data suggest that N/OFQ functions in layer chicks as an orexigenic peptide in the central nervous system, and that the AGRP and the CART neurons may mediate this function, as in mammals. (C) 2009 Elsevier Inc. All rights reserved.

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Link information
DOI
https://doi.org/10.1016/j.ygcen.2009.03.009
PubMed
https://www.ncbi.nlm.nih.gov/pubmed/19318106
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000268213200009&DestApp=WOS_CPL

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