Fig. 5

TUNEL staining. Red fluorescence referred to TUNEL-positive cells, DAPI (blue) referred to nuclear counterstaining (magnification 100×). ^ap < 0.05 compared with NC group. ^bp < 0.05: compared with H₂O₂ + UC group, cardiomyocyte apoptosis index was lower in the H₂O₂ + miR-486 up group. ^cp < 0.05: compared with DC group, cardiomyocyte apoptosis index was increased in the miR-486 down group