Effects of N-terminal fragments of β-endorphin on feeding in chicks

Neuroscience Letters Volume 442 Issue 2 Page 140-142 published_at 2008-09
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Title ( eng )
Effects of N-terminal fragments of β-endorphin on feeding in chicks
Creator
Yanagita Kouichi
Shiraishi Jun-ichi
Fujita Masanori
Source Title
Neuroscience Letters
Volume 442
Issue 2
Start Page 140
End Page 142
Abstract
It is known that N-terminal fragments of β-endorphin have biological activities, such as an antagonism effect of β-endorphin (1–31) on the secretion of hormones or thermoregulation in mammals. We studied the effects of the N-terminal fragments on feeding behavior in male broiler chicks. Intracerebroventricular administration of β-endorphin (1–27) (0.4 nmol) stimulated feeding behavior compared with saline control during the 60-min experimental period. β-Endorphin (1–17) (2.0 nmol) also increased food intake at 30 min postinjection. Co-injection of either β-endorphin (1–27) or (1–17) was effective in reducing full-length β-endorphin-induced feeding in chicks. These data suggest that the N-terminal fragments of β-endorphin act as a partial agonist, and may regulate the activity of the central opioidergic system in chicks.
Keywords
β-Endorphin
N-terminal fragment
feeding behavior
central nervous system
chick
NDC
Zoology [ 480 ]
Language
eng
Resource Type journal article
Publisher
Elsevier Ireland Ltd
Date of Issued 2008-09
Rights
Copyright (c) 2008 Elsevier Ireland Ltd
Publish Type Author’s Original
Access Rights open access
Source Identifier
[ISSN] 0304-3940
[NCID] AA00754925
[DOI] 10.1016/j.neulet.2008.07.018
[PMID] 18638524
[DOI] http://dx.doi.org/10.1016/j.neulet.2008.07.018 isVersionOf