期刊
PHYSIOLOGICAL REPORTS
卷 5, 期 16, 页码 -出版社
WILEY
DOI: 10.14814/phy2.13291
关键词
FoxO3; MAFbx; MuRF1; nuclear factor-B; skeletal muscle; unloading
类别
资金
- Russian Foundation for Basic Research [14-04-01632]
- IUSM-NW
We tested whether NF-B pathway is indispensable for the increase in expression of E3-ligases and unloading-induced muscle atrophy using IKK inhibitor IMD-0354. Three groups of rats were used: nontreated control (C), 3days of unloading/hindlimb suspension with (HS+IMD) or without (HS) IMD-0354. Levels of IB were higher in HS+IMD (1.16-fold) and lower in HS (0.82-fold) when compared with C group. IMD-0354 treatment during unloading: had no effect on loss of muscle mass; increased mRNA levels of MuRF1 and MAFbx; increased level of pFoxO3; and had no effect on levels of Bcl-3, p105, and p50 proteins. Our study for the first time showed that inhibiting IKK invivo during 3-day unloading failed to diminish expression of ubiquitin ligases and prevent muscle atrophy.
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