文献类型： 外文期刊

作者： Zhou, WD ¹ ; Murakami, M ² ; Hasegawa, S ² ; Yoshizawa, F ³ ; Sugahara, K;

作者机构： 1.Utsunomiya Univ, Fac Agr, Dept Anim Sci, Lab Nutr Biochem, Utsunomiya, Tochigi 3218505, Japan

2.Utsunomiya Univ, Fac Agr, Dept Anim Sci, Lab Nutr Biochem, Utsunomiya, Tochigi 3218505, Japan; Tokyo Univ Agr & Technol, United Grad Sch Agr Sci, Tokyo 1838509, Japan; Kobe Univ, Grad Sch Sci & Technol, Div Biosci, Kobe, Hyogo 6578501, Japan; Zhejiang Acad Agr Sci, Inst Anim Husb & Vet Sci, Hangzhou 310021, Peoples R China

3.Utsunomiya Univ, Fac Agr, Dept Anim Sci, Lab Nutr Biochem, Utsunomiya, Tochigi 3218505, Japan; Tokyo Univ Agr & Technol, United Grad Sch Agr Sci, Tokyo 1838509, Japan; Kobe Univ, Grad Sch Sci & Technol, Div Biosci, Kobe, Hyogo 6578501, Japan; Zhejiang Acad Agr Sci, Inst Anim H

关键词： neuropeptide Y;food intake;plasma metabolites;body fat;hypothalamus;fasting;refeeding;broiler chicken;MESSENGER-RNA;FOOD-INTAKE;GENE-EXPRESSION;JAPANESE-QUAIL;GALLUS-DOMESTICUS;BODY-WEIGHT;BRAIN;DEPRIVATION;NPY;LOCALIZATION

期刊名称：COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY A-MOLECULAR & INTEGRATIVE PHYSIOLOGY （ 影响因子：2.32； 五年影响因子：2.465 ）

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收录情况： SCI

摘要： To examine the neural mechanism by which hypothalamic neuropeptide Y (NPY) regulates energy homeostasis and feeding behavior in commercial broilers, we measured NPY content in several hypothalamic regions of birds that were fasted and then refed. After fasting for 48 and 72 h, body weight significantly decreased, and food intake significantly increased during the subsequent refeeding. The lost body weight was not restored to ad libitum feeding levels even after 3 days of refeeding. Plasma glucose concentration and body fat content significantly decreased and plasma non-esterified fatty acid (NEFA) concentration significantly increased after 48- and 72-h fasting. Refeeding for 24 h restored plasma metabolites and body fat content to pre-fasting levels. NPY content in the paraventricular nucleus (PVN) and infundibular nucleus significantly increased during fasting, and NPY content of the PVN was restored to pre-fasting levels after 24-h refeeding. However, there was no significant change in the NPY content of the lateral hypothalamic area during fasting or refeeding. The present results of changes in the hypothalamic NPY content during fasting and refeeding support the hypothesis that NPY plays a central role in regulation of energy homeostasis, with especially important effect on feeding behavior and body weight in broiler chickens. (C) 2005 Elsevier Inc. All rights reserved.