The expressions of TGF-β1/Smads pathway-related proteins in atrial tissues of rats (A) and CFs (B). (A) Expression levels of TGF-β1 and Smad7 proteins in atrial tissues of rats as detected by Western blotting analysis and normalized to GAPDH. *, P<0.05 compared with the Control group; #, P<0.05 compared with the Model group; %, P<0.05 compared with the agomiR-10a group. (B) Expression levels of TGF-β1 and Smad7 proteins amongst different groups of CFs as detected by Western blotting analysis and normalized to GAPDH. *, P<0.05 compared with the Control group; #, P<0.05 compared with the miR-10a mimics group; %, P<0.05 compared with the miR-10a inhibitors group.