中国组织工程研究 ›› 2022, Vol. 26 ›› Issue (29): 4598-4604.doi: 10.12307/2022.881

• 组织构建实验造模 experimental modeling in tissue construction • 上一篇    下一篇

低氧运动干预营养性肥胖模型大鼠骨骼肌能量代谢的变化

吴菊花1,杨亚南2,翁锡全3,赵芳芳4,徐国琴3,林文弢3,4   

  1. 1广西科技大学体育学院,广西壮族自治区柳州市  545006;2广东省足球运动中心,广东省广州市  510500;3广州体育学院运动与健康系,广东省广州市  510500;4珠海科技学院,广东省珠海市  519000
  • 收稿日期:2021-03-27 接受日期:2021-05-09 出版日期:2022-10-18 发布日期:2022-03-27
  • 通讯作者: 林文弢,教授,广州体育学院运动与健康系,广东省广州市 510500;珠海科技学院,广东省珠海市 519000
  • 作者简介:吴菊花,1985年生,2016年上海体育学院毕业,博士,副教授,主要从事运动与健康促进、低氧运动减肥方面的研究。
  • 基金资助:
    广西科技大学运动与健康实验室基金项目(GKDTYSY2003),项目负责人:吴菊花;教育部人文社会科学研究青年基金西部和边疆项目(18XJCZH009),项目负责人:吴菊花;广西高校中青年教师基础能力提升项目(2018KY0314),项目负责人:吴菊花;广西科技大学博士基金(校科博17083),项目负责人:吴菊花

Effects of hypoxic exercise on skeletal muscle energy metabolism of rats with alimentary obesity

Wu Juhua1, Yang Yanan2, Weng Xiquan3, Zhao Fangfang4, Xu Guoqin3, Lin Wentao3, 4   

  1. 1School of Physical Education, Guangxi University of Science and Technology, Liuzhou 545006, Guangxi Zhuang Autonomous Region, China; 2Guangdong Provincial Football Center, Guangzhou 510500, Guangdong Province, China; 3Department of Sports and Health, Guangzhou Sport University, Guangzhou 510500, Guangdong Province, China; 4Zhuhai College of Science and Technology, Zhuhai 519000, Guangdong Province, China
  • Received:2021-03-27 Accepted:2021-05-09 Online:2022-10-18 Published:2022-03-27
  • Contact: Lin Wentao, Professor, Department of Sports and Health, Guangzhou Sport University, Guangzhou 510500, Guangdong Province, China; Zhuhai College of Science and Technology, Zhuhai 519000, Guangdong Province, China
  • About author:Wu Juhua, MD, Associate professor, School of Physical Education, Guangxi University of Science and Technology, Liuzhou 545006, Guangxi Zhuang Autonomous Region, China
  • Supported by:
    the Sports and Health Laboratory Fund Project of Guangxi University of Science and Technology, No. GKDTYSY2003 (to WJH); Western and Frontier Project of Humanities and Social Science Research Fund for the Youth, Ministry of Education, No. 18XJCZH009 (to WJH); the Young and Middle-aged Teachers’ Capability Improvement Project in Guangxi Universities, No. 2018KY0314 (to WJH); Guangxi University of Science and Technology Doctoral Fund, No. 17083 (to WJH)

摘要:

文题释义:
低氧运动:即低氧环境中进行运动锻炼,低氧运动可通过低氧和运动双重刺激,提高机体氧运输能力、氧利用能力、脂肪酸氧化代谢以及神经肌肉功能,促使机体组织产生一系列适应性变化,从而促进体质水平及整体健康。
过氧化物酶体增殖物激活受体α:作为核受体超家族的一员,其作用广泛,其调控通路主要涉及到脂肪酸氧化、抑制糖异生等,可通过调节骨骼肌脂肪酸氧化代谢来调节脂代谢动态平衡,在肥胖防治过程中起着重要调控作用。

背景:肥胖发生率逐渐攀升,易引起多种继发性疾病,对此,学者们提出众多减肥干预策略,其中运动干预或/和低氧暴露对肥胖防治具有较好的效果。
目的:探讨低氧运动对肥胖大鼠骨骼肌过氧化物酶体增殖物激活受体α(peroxisome proliferators-activated receptor α,PPARα)/过氧化物酶体增殖物激活受体γ共激活分子1α(peroxisome proliferator-activated receptor-γ coactivator-1α,PGC-1α)/脂素1表达的影响。
方法:构建营养性肥胖大鼠模型,建模后随机分为常氧安静组和运动组、体积分数16.3%低氧安静组和运动组、13.3%低氧安静组和运动组,继续高脂饲养,运动组进行8周耐力运动,20 m/min,40 min/d,每周5 d。末次运动24 h后麻醉处死大鼠并采样,Western blot及免疫组化测定大鼠骨骼肌PGC-1α、PPARα以及脂素1蛋白表达水平。
结果与结论:①7周高脂膳食诱导营养性肥胖大鼠模型建立;②与常氧安静组相比,常氧运动组、16.3%低氧运动组及13.3%低氧运动组大鼠骨骼肌PGC-1α蛋白表达水平均显著升高(P < 0.05-0.01);与16.3%低氧安静组相比,16.3%低氧运动组大鼠骨骼肌PGC-1α蛋白表达水平显著升高(P < 0.05);与13.3%低氧运动组相比,常氧运动组、16.3%低氧安静组、13.3%低氧安静组大鼠骨骼肌PGC-1α蛋白表达水平均显著降低(P < 0.05-0.01);③与常氧安静组相比,常氧运动组、13.3%低氧安静组和运动组大鼠骨骼肌PPARα蛋白表达水平显著升高(P < 0.05-0.01);与13.3%低氧运动组相比,16.3%低氧安静组和运动组大鼠骨骼肌PPARα蛋白表达水平显著降低(P < 0.05);④与常氧安静组相比,其他5组大鼠骨骼肌脂素1蛋白表达水平均有所降低,其中13.3%低氧运动组降低最为显著(P < 0.05);⑤提示低氧运动可引起肥胖大鼠骨骼肌PGC-1α、PPARα蛋白表达增加,下调脂素1蛋白表达,促进骨骼肌脂肪酸氧化代谢,从而有利于改善肥胖大鼠骨骼肌的能量代谢。
缩略语:过氧化物酶体增殖物激活受体γ共激活分子1α:peroxisome proliferator-activated receptor-γ coactivator-1α,PGC-1α;过氧化物酶体增殖物激活受体α:peroxisome proliferators-activated receptor α,PPARα;脂素1:Lipin1

https://orcid.org/0000-0003-1926-3030 (吴菊花) 

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松;组织工程

关键词: 低氧运动, 肥胖, PGC-1α, PPARα, 脂素1, 骨骼肌, 大鼠

Abstract: BACKGROUND: The incidence of obesity is gradually increasing, which is prone to cause a variety of secondary diseases. Therefore, numerous weight-loss intervention strategies have been proposed, among which exercise intervention or/and hypoxic exposure have better effects on the prevention and treatment of obesity. 
OBJECTIVE: To explore the effect of hypoxic exercise on the protein expression levels of peroxisome proliferators-activated receptor α (PPARα)/peroxisome proliferator-activated receptor-γ coactivator-1α (PGC-1)/Lipin1 in the skeletal muscle of rats with alimentary obesity. 
METHODS: Animal models of alimentary obesity were established in rats, and the rat models were then randomized into normoxic quiet group and exercise group, 16.3% hypoxic quiet group and exercise group, and 13.3% hypoxic quiet group and exercise group. The rats were fed with high fat, and all exercise groups received an endurance exercise, 20 m/min, 40 min/d, 5 days per week for 8 weeks. The rats were killed under anesthesia and sampled at 24 hours after the last exercise. The protein expression levels of PGC-1α, PPARα, and Lipin1 in the skeletal muscle of rats were then determined by western blot and immunohistochemistry. 
RESULTS AND CONCLUSION: The rat model of alimentary obesity was induced by a 7-week high-fat diet. Compared with the normoxic quiet group, the expression of PGC-1α protein in the skeletal muscle of rats was significantly increased in the normoxic exercise group, 16.3% hypoxic exercise group, and 13.3% hypoxic exercise group (P < 0.05-0.01). Compared with the 16.3% hypoxic quiet group, the expression of PGC-1α protein in the skeletal muscle of rats was significantly increased in the 16.3% hypoxic exercise group (P < 0.05). Compared with the 13.3% hypoxic exercise group, the expression of PGC-1α protein in the skeletal muscle of rats was significantly reduced in the normoxic exercise group, 16.3% hypoxic quiet group, and 13.3% hypoxic quiet group (P < 0.05-0.01). Compared with the normoxic quiet group, the expression of PPARα protein in the skeletal muscle of rats was significantly increased in the normoxic exercise group, 13.3% hypoxic quiet and exercise groups (P < 0.05-0.01). Compared with the 13.3% hypoxic exercise group, the expression of PPARα protein in the skeletal muscle of rats was significantly reduced in the 16.3% hypoxic quiet and exercise groups (P < 0.05). Compared with the normoxic quiet group, the expression of Lipin1 protein in the skeletal muscle of rats was reduced in the other five groups, and reduced significantly in the 13.3% hypoxic exercise group (P < 0.05). To conclude, hypoxic exercise can increase the expression of PGC-1α and PPARα and reduce the expression of Lipin1 protein in the skeletal muscle of obese rats, and promote the oxidative metabolism of fatty acids in the skeletal muscle, which is beneficial to improving skeletal muscle energy metabolism of obese rats.

Key words: hypoxic exercise, obesity, PGC-1α, PPARα, Lipin1, skeletal muscle, rat

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