Fig. 6. Western blot analysis of proteins including Sirt1, Sirt3, PGC-1α, NRF1 and TFAM in L6 cells. (a) Band images of relevant proteins: Sirt1, Sirt3, PGC-1α, NRF1, TFAM with GAPDH used as internal reference. (b) The relative expressions of Sirt1, Sirt3, PGC-1α, NRF1 and TFAM. The expressions in normal L6 cells are normalized to 1.0. Data are presented as mean ± SD (n = 3). *P < 0.05, **P < 0.01, ***P < 0.001 versus with control group.