The neuropeptides, orexin-A and orexin-B, have been demonstrated to have a physiological role in the regulation of food intake in mammals. The effects of human orexin-A and orexin-B intracerebroventricular (i.c.v.) injection on the feeding behavior of goldfish (Carassius auratus) were investigated. I.c.v. injection of orexin-A and orexin-B both caused a significant increase in appetite, as indicated by an increased number of feeding acts. Orexin-A and orexin-B both significantly stimulated food consumption, as indicated by increased total food intake during a 60-min observation period; the actions of orexin-A were dose dependent. Orexin-A was more potent than orexin-B in stimulation of both feeding behavior and food intake. These results indicate that orexin peptides are involved in the hypothalamic regulatory pathways of feeding behavior in goldfish. (C) 1999 Published by Elsevier Science B.V. All rights reserved.
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Univ Liverpool, Diabet & Endocrinol Res Unit, Diabet & Endocrinol Res Grp, Liverpool L69 3GA, Merseyside, EnglandUniv Liverpool, Diabet & Endocrinol Res Unit, Diabet & Endocrinol Res Grp, Liverpool L69 3GA, Merseyside, England
Cai, XJ
Evans, ML
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机构:Univ Liverpool, Diabet & Endocrinol Res Unit, Diabet & Endocrinol Res Grp, Liverpool L69 3GA, Merseyside, England
Evans, ML
Lister, CA
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机构:Univ Liverpool, Diabet & Endocrinol Res Unit, Diabet & Endocrinol Res Grp, Liverpool L69 3GA, Merseyside, England
Lister, CA
Leslie, RA
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机构:Univ Liverpool, Diabet & Endocrinol Res Unit, Diabet & Endocrinol Res Grp, Liverpool L69 3GA, Merseyside, England
Leslie, RA
Arch, JRS
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Arch, JRS
Wilson, S
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Wilson, S
Williams, G
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机构:Univ Liverpool, Diabet & Endocrinol Res Unit, Diabet & Endocrinol Res Grp, Liverpool L69 3GA, Merseyside, England
机构:
Peking Univ, Peoples Hosp, Dept Tradit Chinese Med, Beijing 100044, Peoples R ChinaPeking Univ, Peoples Hosp, Dept Tradit Chinese Med, Beijing 100044, Peoples R China
Dong, Yuanli
Li, Mei
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Peking Univ, Peoples Hosp, Inst Clin Mol Biol, Beijing 100044, Peoples R ChinaPeking Univ, Peoples Hosp, Dept Tradit Chinese Med, Beijing 100044, Peoples R China
Li, Mei
Wang, Shaojie
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Peking Univ, Peoples Hosp, Dept Tradit Chinese Med, Beijing 100044, Peoples R ChinaPeking Univ, Peoples Hosp, Dept Tradit Chinese Med, Beijing 100044, Peoples R China
Wang, Shaojie
Dong, Yuwei
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Peking Univ, Peoples Hosp, Inst Clin Mol Biol, Beijing 100044, Peoples R ChinaPeking Univ, Peoples Hosp, Dept Tradit Chinese Med, Beijing 100044, Peoples R China
Dong, Yuwei
Zhao, Hongxia
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Hosp Mentougou, Dept Tradit Chinese Med, Beijing 102300, Peoples R ChinaPeking Univ, Peoples Hosp, Dept Tradit Chinese Med, Beijing 100044, Peoples R China
Zhao, Hongxia
Dai, Zhong
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Peking Univ, Peoples Hosp, Dept Tradit Chinese Med, Beijing 100044, Peoples R ChinaPeking Univ, Peoples Hosp, Dept Tradit Chinese Med, Beijing 100044, Peoples R China