MPO and ischemia: In addition, compared to the sham group, 1 h of ischemia and different times of reperfusion (2 h, 6 h, and 24 h) significantly increased MPO (p-values = 0.005, 0.004, and 0.009) and LDH (p-values = 1.86 × 10−8, 2.43 × 10−11, and 0.002) levels in serum, respectively.