Article (Scientific journals)
Alpha-lipoic acid impairs body weight gain of young broiler chicks via modulating peripheral AMPK.
Wang, Yufeng; Everaert, Nadia; Song, Zhigang et al.
2017In Comparative Biochemistry and Physiology. Part A, Molecular and Integrative Physiology, 211, p. 34-40
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Keywords :
Alpha-lipoic acid; Broiler chicks; Fatty acid synthase; Glycogen synthase; Hepatic AMPK; Malonyl-CoA
Abstract :
[en] In mammals, the AMP-activated protein kinase (AMPK) pathways in the central and peripheral tissues coordinately integrate inputs from multiple sources to regulate energy balance. The present study was aimed to explore the potential role of hepatic AMPK in the energy homeostasis of broiler chickens. Diets with 0, 0.05% or 0.1% alpha-lipoic acid (alpha-LA), a known AMPK inhibitor were provided to broiler chicks for 7days. As a result, alpha-LA supplementation decreased the relative growth rate of broiler chicks. Hepatic AMPKalpha2 mRNA levels were significantly upregulated by dietary alpha-LA, in concert with the increased phosphorylated AMPKalpha protein levels. In addition, hepatic FAS mRNA levels together with the malonyl-CoA to total CoA ester ratio were reduced by alpha-LA supplementation. Moreover, the hepatic phosphorylated glycogen synthase levels were increased resulting in a markedly decreased hepatic glycogen content. In conclusion, dietary alpha-LA supplementation decreased the in vivo hepatic glycogenesis and lipogenesis via stimulating hepatic AMPKalpha mRNA levels and the phosphorylated gene product. The stimulatory effect of alpha-LA on hepatic AMPK mRNA and pAMPKalpha protein levels together with our previous observations regarding its inhibitory effect on hypothalamic AMPK may have altered the energy balance and hence impaired body weight gain of broiler chicks.
Disciplines :
Animal production & animal husbandry
Author, co-author :
Wang, Yufeng
Everaert, Nadia ;  Université de Liège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Ingénierie des productions animales et nutrition
Song, Zhigang
Decuypere, Eddy
Vermeulen, Daniel
Buyse, Johan
Language :
English
Title :
Alpha-lipoic acid impairs body weight gain of young broiler chicks via modulating peripheral AMPK.
Publication date :
2017
Journal title :
Comparative Biochemistry and Physiology. Part A, Molecular and Integrative Physiology
ISSN :
1095-6433
eISSN :
1531-4332
Publisher :
Elsevier, Netherlands
Volume :
211
Pages :
34-40
Peer reviewed :
Peer Reviewed verified by ORBi
Commentary :
Copyright (c) 2017 Elsevier Inc. All rights reserved.
Available on ORBi :
since 05 July 2017

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