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Mu-Opioid Receptor is Involved in [beta]-Endorphin-Induced Feeding in the Meat-type Chick

  β-Endorphin is an endogenous ligand for both mu- and delta-opioid receptors (MOR and DOR), and has an important role in feeding behavior in the central nervous system in mammals. The present study was done to elucidate whether central injection of β-endorphin enhances feeding behavior in neonatal... Full description

Journal Title: The Journal of Poultry Science 2008, Vol.45(2), p.139
Main Author: Yanagita, Kouichi
Other Authors: Shiraishi, Jun-Ichi , Fujita, Masanori , Bungo, Takashi
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: ISSN: 13467395 ; E-ISSN: 13490486
Link: http://search.proquest.com/docview/1439306245/?pq-origsite=primo
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title: Mu-Opioid Receptor is Involved in [beta]-Endorphin-Induced Feeding in the Meat-type Chick
format: Article
creator:
  • Yanagita, Kouichi
  • Shiraishi, Jun-Ichi
  • Fujita, Masanori
  • Bungo, Takashi
subjects:
  • Central Nervous System
  • Chick
  • &Amp
  • Beta
  • -Endorphin
  • Food Intake
  • Mu-Opioid Receptor
ispartof: The Journal of Poultry Science, 2008, Vol.45(2), p.139
description:   β-Endorphin is an endogenous ligand for both mu- and delta-opioid receptors (MOR and DOR), and has an important role in feeding behavior in the central nervous system in mammals. The present study was done to elucidate whether central injection of β-endorphin enhances feeding behavior in neonatal chicks and to investigate the interaction with the MOR and DOR. We found that the intracerebroventricular (ICV) injection of β-endorphin (50pmol) significantly stimulated food intake in neonatal chicks during the 60-min period postinjection. In addition, the orexigenic effect of β-endorphin was significantly attenuated by the MOR, but not by the DOR antagonist. These results indicate that the administration of β-endorphin into the chick brain produces the orexigenic effect through the MOR.
language: eng
source:
identifier: ISSN: 13467395 ; E-ISSN: 13490486
fulltext: fulltext
issn:
  • 13467395
  • 1346-7395
  • 13490486
  • 1349-0486
url: Link


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description  β-Endorphin is an endogenous ligand for both mu- and delta-opioid receptors (MOR and DOR), and has an important role in feeding behavior in the central nervous system in mammals. The present study was done to elucidate whether central injection of β-endorphin enhances feeding behavior in neonatal chicks and to investigate the interaction with the MOR and DOR. We found that the intracerebroventricular (ICV) injection of β-endorphin (50pmol) significantly stimulated food intake in neonatal chicks during the 60-min period postinjection. In addition, the orexigenic effect of β-endorphin was significantly attenuated by the MOR, but not by the DOR antagonist. These results indicate that the administration of β-endorphin into the chick brain produces the orexigenic effect through the MOR.
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abstract  β-Endorphin is an endogenous ligand for both mu- and delta-opioid receptors (MOR and DOR), and has an important role in feeding behavior in the central nervous system in mammals. The present study was done to elucidate whether central injection of β-endorphin enhances feeding behavior in neonatal chicks and to investigate the interaction with the MOR and DOR. We found that the intracerebroventricular (ICV) injection of β-endorphin (50pmol) significantly stimulated food intake in neonatal chicks during the 60-min period postinjection. In addition, the orexigenic effect of β-endorphin was significantly attenuated by the MOR, but not by the DOR antagonist. These results indicate that the administration of β-endorphin into the chick brain produces the orexigenic effect through the MOR.
copIbaraki
pubJapan Science and Technology Agency
urlhttp://search.proquest.com/docview/1439306245/
doi10.2141/jpsa.45.139
pages139-142