Exp Clin Endocrinol Diabetes 2017; 125(08): 538-546
DOI: 10.1055/s-0043-104634
Article
© Georg Thieme Verlag KG Stuttgart · New York

Early Mitochondrial Adaptations in Skeletal Muscle to Obesity and Obesity Resistance Differentially Regulated by High-Fat Diet

Jingyu Sun
1   Sports and Health Research Center, Tongji University Department of Physical Education, Shanghai, China
,
Tao Huang
2   Department of Physical Education, Shanghai Jiao Tong University, Shanghai, China
,
Zhengtang Qi
3   Key Laboratory of Adolescent Health Assessment and Exercise Intervention, Ministry of Education, East China Normal University, Shanghai, China
,
Songhui You
1   Sports and Health Research Center, Tongji University Department of Physical Education, Shanghai, China
,
Jingmei Dong
1   Sports and Health Research Center, Tongji University Department of Physical Education, Shanghai, China
,
Chen Zhang
4   Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai, China
,
Lili Qin
1   Sports and Health Research Center, Tongji University Department of Physical Education, Shanghai, China
,
Yunhe Zhou
1   Sports and Health Research Center, Tongji University Department of Physical Education, Shanghai, China
,
Shuzhe Ding
3   Key Laboratory of Adolescent Health Assessment and Exercise Intervention, Ministry of Education, East China Normal University, Shanghai, China
› Author Affiliations
Further Information

Publication History

received 21 October 2016
revised 17 February 2017

accepted 23 February 2017

Publication Date:
25 April 2017 (online)

Preview

Abstract

Objective

The mechanism for different susceptibilities to obesity after short-term high-fat diet (HFD) feeding is largely unknown. Given the close association between obesity occurrence and mitochondrial dysfunction, the early events in skeletal muscle mitochondrial adaptations between HFD-induced obesity (DIO) and HFD-induced obesity resistant (DIO-R) lean phenotype under excess nutritional environment were explored.

Methods

ICR/JCL male mice were randomly divided into 2 groups, as follows: low-fat diet (LFD) and HFD groups. After 6 weeks on HFD, HFD-fed mice were classified as DIO or DIO-R according to their body weight gain. Serum parameters, oxidative stress biomarkers, the activation of AMPK/ACC axis, and the expression profiles of mitochondrial biogenesis were measured by using corresponding methods among the LFD control, DIO, and DIO-R groups.

Results

Serum glucose, total cholesterol, low-density lipoprotein, and high-density lipoprotein levels were significantly increased in DIO and DIO-R mice compared with LFD controls. However, DIO-R mice had significantly higher MDA levels and exhibited a significantly higher level of AMP-activated protein kinase (AMPK) activation and acetyl-CoA carboxylase (ACC) inactivation than DIO mice. Furthermore, the transcript and protein levels of transcriptional coactivator peroxisome proliferator-activated receptor γ (PPARγ) coactivator 1α (PGC-1α) and estrogen-related receptor-α (ERRα) in DIO-R mice were significantly up-regulated compared with the DIO mice.

Conclusions

Although the body weight gain differed, the DIO and DIO-R mice had similar metabolic disturbance of glucose and lipids after short-term HFD consumption. The diverse alterations on fatty acid oxidation and mitochondrial biogenesis pathway induced by AMPK activation might be involved in different susceptibilities to obesity when consuming HFD.