KCNJ2 and cardiac hypertrophy: Compared with the sham group, the protein expressions of Cavβ1 were significantly decreased in myocardium of cardiac hypertrophy induced by TAC (Figure 1F, ***P < .001 vs. Sham), Kir2.1 were significantly decreased in myocardium of cardiac hypertrophy induced by TAC (Figure 1G, *P < .05 vs. Sham), the protein expression of Kv4.3 was significantly decreased in myocardium of cardiac hypertrophy induced by TAC (Figure 1H, *P < .05 vs. Sham).