Document Detail

Intracerebroventricular administration of octopamine stimulates food intake of chicks through alpha(2)-adrenoceptor.
MedLine Citation:
PMID:  12126995     Owner:  NLM     Status:  MEDLINE    
Octopamine, known to be an important neurotransmitter in invertebrates, has been noted to have several similarities to noradrenaline (NA) in mammals. The present study was done to elucidate whether central injection of octopamine enhances the feeding behavior of chicks and to investigate the interaction of octopamine with both alpha(1)- and alpha(2)-adrenoceptors. We found that the intracerebroventricular injection of octopamine significantly stimulated food intake of neonatal chicks during 30 min postinjection, but not thereafter. Moreover, this octopamine-induced eating response was attenuated by the alpha(2)-antagonist yohimbine, but not by the alpha(1)-antagonist prazosin. These results suggest that the action of octopamine on the feeding behavior of the neonatal chick is similar to that of NA, since octopamine regulates food intake through the alpha(2)-adrenoceptor.
Takashi Bungo; Tamae Higaki; Hiroshi Ueda; Mitsuhiro Furuse
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Physiology & behavior     Volume:  76     ISSN:  0031-9384     ISO Abbreviation:  Physiol. Behav.     Publication Date:  2002 Aug 
Date Detail:
Created Date:  2002-07-19     Completed Date:  2003-02-13     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0151504     Medline TA:  Physiol Behav     Country:  United States    
Other Details:
Languages:  eng     Pagination:  575-8     Citation Subset:  IM    
Laboratory of Animal Science, Department of Agrobiological Science, Faculty of Agriculture, Ehime University, Matsuyama 790-8566, Japan.
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MeSH Terms
Adrenergic alpha-Agonists / pharmacology*
Adrenergic alpha-Antagonists / administration & dosage,  pharmacology
Chickens / physiology*
Eating / drug effects*
Injections, Intraventricular
Octopamine / administration & dosage,  pharmacology*
Prazosin / administration & dosage,  pharmacology
Receptors, Adrenergic, alpha-2 / agonists*
Stimulation, Chemical
Yohimbine / administration & dosage,  pharmacology
Reg. No./Substance:
0/Adrenergic alpha-Agonists; 0/Adrenergic alpha-Antagonists; 0/Receptors, Adrenergic, alpha-2; 104-14-3/Octopamine; 146-48-5/Yohimbine; 19216-56-9/Prazosin

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