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http://dx.doi.org/10.5352/JLS.2018.28.10.1186

Aerobic Exercise Ameliorated High Fat Diet-induced Endoplasmic Reticulum Stress More Than Polyphenol Supplementation in Skeletal Muscle of Obese Mice  

Park, Jong-Gu (Department of Sport Science, Chungnam National University)
Kim, Yong-An (Institute of Biotechnology, Chungnam National University)
Park, Hee-Geun (Department of Sport Science, Chungnam National University)
Lee, Wang-Lok (Department of Sport Science, Chungnam National University)
Publication Information
Journal of Life Science / v.28, no.10, 2018 , pp. 1186-1192 More about this Journal
Abstract
The purpose of this study was to compare the effects of either aerobic exercise or polyphenols supplementation on mRNA expression of endoplasmic reticulum stress in skeletal muscle of high fat diet-induced obese mice. In the study, mice were divided into five groups: (1) NC (normal diet for 16 weeks as a control, n=10), (2) HC (high fat diet for 16 weeks as a control, n=10), (3) H-Re (high fat diet with resveratrol 25 mg/kg supplementation for 16 weeks, n=10), (4) H-Ch (high fat diet with chrysin 50 mg/kg supplementation for 16 weeks, n=10), and (5) HE (high fat diet with aerobic exercise for 16 weeks, n=10). Aerobic exercise was performed on a treadmill for 40~60 min/day at 10~14 m/min, 0% grade, four days/week for 16 weeks. Endoplasmic reticulum stress related genes were measured by real-time polymerase chain reaction. ATF6, PERK, $IRE1{\alpha}$, and BIP/GRP78 mRNA were significantly decreased in HE compared with those in HC (p<0.05). Also, ATF6, $IRE1{\alpha}$, and BIP/GRP78 mRNA were significantly decreased in H-Re compared with those in HC (p<0.05). ATF6 mRNA was significantly decreased in H-Ch compared with that in HC (p<0.05). These findings suggest that aerobic exercise, resveratrol, and chrysin supplementation changed ER stress markers. However, aerobic exercise was most effective on ameliorating the high fat diet induced ER stress markers. Thus, it seems that aerobic exercise might have a more positive effect on skeletal muscle endoplasmic reticulum stress compared with polyphenol supplementation in high fat diet-induced obese mice.
Keywords
Aerobic exercise; chrysin; endoplasmic reticulum; high fat diet induced obese; resveratrol;
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