ICAM1 and ischemia: Compared with the ischemia group, the ICAM-1 mRNA expression in the myocardial tissues of the rats was reduced in the ischemia + low-, medium- and high-dose NaHS groups (P<0.05 or P<0.01); ICAM-1 mRNA expression was increased markedly, but not significantly, in the ischemia + PPG group (P>0.05) (Fig. 3 and Table II).