A long-term high-fat, high-sucrose diet in Barna minipigs promotes lipid deposition and amyotrophy by up-regulating the myostatin pathway

文献类型: 外文期刊

第一作者: Ruan, Jinxue

作者: Ruan, Jinxue;Yuan, Jing;Xin, Leilei;Xia, Jihan;Liu, Nan;Mu, Yulian;Yang, Shulin;Li, Kui;Ruan, Jinxue;Zhang, Yuanyuan;Chen, Yaoxing;Yuan, Jing;Liu, Nan;Li, Kui

作者机构:

关键词: Skeletal muscle;Obesity;Muscle mass

期刊名称:MOLECULAR AND CELLULAR ENDOCRINOLOGY ( 影响因子:4.102; 五年影响因子:4.226 )

ISSN: 0303-7207

年卷期: 2016 年 425 卷 C 期

页码:

收录情况: SCI

摘要: Skeletal muscle is as an important regulator of blood glucose and glycolipid metabolism and is closely related to motor ability. The underlying mechanisms by which dietary ectopic lipids in skeletal muscle prevents muscle growth remain elusive. We utilized miniature Bama swine as a model to mimic human obesity using prolonged dietary induction. After 23 months on a high-fat, high-sucrose diet, metabolic disorders were induced in the animals, which exhibited increased body weight, extensive lipid deposition in the skeletal muscle and amyotrophy. Microarray profiles demonstrated the up-regulation of genes related to fat deposition and muscle growth inhibition. We outline a clear potential pathway that in combination with increased 11 beta-hydroxysteroid dehydrogenase type 1, promotes expression of a major inhibitor, myostatin, by converting corticosterone to cortisol, which leads to the growth inhibition of skeletal muscle. This research provides new insights into the treatment of muscle diseases induced by obesity. (C) 2016 Elsevier Ireland Ltd. All rights reserved.

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