Compared with the ischemia group, NF-κB expression in the myocardial tissues of the rats was significantly reduced in the ischemia + medium- and high-dose NaHS groups; in the ischemia + PPG group, NF-κB expression in the myocardial tissues of the rats was increased (P<0.05 or P<0.01) (Fig. 4 and Table II). This evidence concerns the gene NFKB1 and ischemia.