Figure 2. Effect of pterostilbene treatment combined with AMPK siRNA on cell viability, ATP content, ROS generation and ΔΨm, and AMPK and PGC1α signaling in DOX-treated H9c2 cells (24 h). (A) Representative western blot results of p-AMPK, AMPK, PGC1α, UCP2 and NRF1 are shown. Membranes were re-probed for β-actin expression to show that similar amounts of protein were loaded in each lane. (B) Cell viability, (C) cellular ATP content, (D) ROS level and (E) ΔΨm are shown, and (B–D) three indexes in the Control group of siCON are defined as 100%. The results are expressed as the mean ± SEM. *P < 0.05 vs. the Control group, #P < 0.05 vs. the 1 μM DOX-treated group, $P < 0.05 vs. the siCON group with the representative same drug treatments.