Eight-week Climbing Ladder Exercise with Load Induces Differential Expression of PGC1α/FNDC5/ MSTN in Soleus and Extensor Digitorum Longus Muscle in SD Rats
- VernacularTitle:8周爬梯负重训练诱导大鼠比目鱼肌和趾长伸肌PGC1α/FNDC5/MSTN差异表达
- Author:
Pengfei LI
;
Guoliang FANG
;
Xingya YANG
;
Liang LI
;
Tao YU
;
Ye TIAN
- Keywords:
climbing ladder exercise with load;
skeleton muscle;
PGC1α;
FNDC5;
Irisin;
MSTN
- From:Chinese Journal of Sports Medicine
2017;36(3):195-200,206
- CountryChina
- Language:Chinese
-
Abstract:
Objective To observe the effect of 8-week climbing ladder exercise with load on the expression of proliferator-activated receptor gamma coactivator 1-alpha (PGC1α)/ fibronectin type Ⅲ domain containing 5 (FNDC5)/ myostatin (MSTN)in soleus and extensor digitorum longus muscle and the serum concentration of irisin in Sprague-Dawley (SD)rats.Methods Twenty SD rats were randomly divided into a control (Con,n=10)group and a climbing ladder (Lad,n=10)group.The Lad group took an 8-week and once-every-3-day program of resistance exercise using an improved model of climbing ladder with load.Then the soleus and extensor digitorum longus muscles were isolated at 48 h after exercise.The PGC1α/FNDC5/MSTN mRNA and protein expression in the skeleton muscle were detected using quantitative PCR and Western blotting respectively.The serum concentration of irisin was measured using enzyme-linked immunosorbent assay.Results Compared with Con group,the expression of PGC1α in the soleus muscle reduced significantly (P＜0.05),that of FNDC5 reduced but without significance and that of MSTN increased significantly (P＜0.05)in Lad group.However,the expression of PGC1α in the extensor digitorum longus muscle increased significantly (P＜0.05),that of FNDC5 increased but without significance and that of MSTN decreased significantly (P＜0.05)in Lad group compared with Con group.There were no significant differences in the serum concentration of irisin between the two groups.Conclusion Eight-week climbing ladder exercise with load on rats induces differential expression of PGC1α/FNDC5/MSTN in soleus and extensor digitorum longus muscle,but doesn't influence the serum concentration of irisin.It is suggested that there may be a complex mechanism of balancing and antagonism in the body after long-term resistance exercises.
