Hypoxic exercise training promotes apelin/APJ expression in skeletal muscles of high fat diet-induced obese mice
Article
Article Title | Hypoxic exercise training promotes apelin/APJ expression in skeletal muscles of high fat diet-induced obese mice |
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ERA Journal ID | 2351 |
Article Category | Article |
Authors | Ji, Weixiu (Author), Gong, Lijing (Author), Wang, Jianxiong (Author), He, Hui (Author) and Zhang, Ying (Author) |
Journal Title | Protein and Peptide Letters: international journal for rapid publication of short papers in protein and peptide science |
Journal Citation | 24 (1), pp. 64-70 |
Number of Pages | 7 |
Year | 2017 |
Place of Publication | Netherlands |
ISSN | 0929-8665 |
1875-5305 | |
Digital Object Identifier (DOI) | https://doi.org/10.2174/0929866524666161111111726 |
Web Address (URL) | http://www.eurekaselect.com/147319/article |
Abstract | Apelin, an endogenous ligand of the G-protein-coupled receptor APJ, is a novel myokine and may play a key role in regulating energy metabolism. The purpose of the present study was to investigate the effects of hypoxic exposure, exercise, and hypoxic exercise training on the expression of apelin and APJ in skeletal muscle of obese mice. 60 two-month old C57BL/6J mice were randomly divided into two groups: 10 in normal diet group (N) and 50 in the high fat diet (HFD) groups. After two months of feeding, the HFD mice whose body weight 20% higher than the average weight of N group were selected as obese mice and were further allocated into four groups: Control (C), Exercise (E), Hypoxia (H), and Exercise plus Hypoxia (E+H), at 8-9 mice/group. Besides body weight, measured variables in skeletal muscle were protein/mRNA levels of apelin/APJ, AMPKα-Thr172 phosphorylation, hypoxia inducible factor-1α (HIF-1α), mRNA levels of peroxisome proliferator-activated receptorα (PPARα), estrogen-related receptor (ERRα), and nuclear respiratory factor1 (NRF1). Obese mice had significantly lower mRNA and protein expressions of apelin/APJ in skeletal muscles than the normal body weight mice. After four weeks of interventions, hypoxic exercise training decreased body weight and increased mRNA and protein expressions of apelin and APJ, mRNA expression of ERRα, and protein expression of HIF-1α. These results indicate that changes of body weight may be associated with the levels of apelin/APJ expressions in skeletal muscle. |
Keywords | hypoxic exercise training; apelin; APJ; skeletal muscle; obese mice |
ANZSRC Field of Research 2020 | 310199. Biochemistry and cell biology not elsewhere classified |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Beijing Sport University, China |
Faculty of Health, Engineering and Sciences | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q3v8v/hypoxic-exercise-training-promotes-apelin-apj-expression-in-skeletal-muscles-of-high-fat-diet-induced-obese-mice
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