The serum levels of CK-MB, CTnI, CRP, SOD, and MDA after treatment. (a) CK-MB; (b) CTnI; (c) CRP; (d) SOD; (e) MDA; Model-2 h group (after 30 min of myocardial ischemia, reperfusion 2 h), Model-4 h group (reperfusion for 2 h after 30 min of myocardial ischemia), Model-4 h group (reperfusion for 4 h after 30 min of myocardial ischemia), HZOL-2 h group (application of HZOL before Model-2 h), HZOL-4 h group (application of HZOL before Model-4 h), isosorbide mononitrate capsule (ISMOC)-2 h group (application of ISMOC before Model-2 h), ISMOC-4 h group (application of ISMOC before Model-4 h), and sham group (subjected to the same surgical procedure in the absence of left anterior descending coronary artery). #
P < 0.05 versus sham group; &
P < 0.05 versus Model-2 h group; ∗
P < 0.05 versus Model-4 h group; ▲
P < 0.05 versus HZOL-2 h group.