Effect of
simvastatin on the expression of
caspase-3 in
myocardial ischemia reperfusion injury in rats was observed to explore the protective effect of
caspase-3 through anti-apoptosis mechanism. A total of 48 healthy male SD rats weighing 160-240 g were selected and divided into 4 groups randomly, namely, the blank group, the
sham operation group, the
ischemia-reperfusion group and the
simvastatin group, with 12 rats in each group. The model of SD rats was made by
ligation. The loosen
ligature made the reperfusion animal model, the occurrence of
arrhythmia in the electrocardiogram of lead II in the experimental animal model was observed, and the area of
myocardial infarction in the experimental animal models was detected. The number of apoptotic cells was detected by immunohistochemistry, and the expression of
caspase-3 was detected by western blotting. The
infarct area in the
simvastatin group was significantly lower than the
ischemia reperfusion group (P<0.05). The positive rate of the expression of
caspase-3 and the positive rate of the expression of apoptotic cells in the ischemic reperfusion and
simvastatin groups were significantly higher than that of the blank and
sham operation groups, and the positive rate of the expression of
caspase-3 and apoptotic cells in the
simvastatin group was significantly lower than that of the
ischemia-reperfusion group (P<0.05). The
arrhythmia score of the
simvastatin group was significantly lower than that of the
ischemia-reperfusion group (P<0.05). Compared with the blank and
sham operation groups, the expression of
caspase-3 protein in the
ischemia-reperfusion and
simvastatin groups was significantly increased, and the expression of
caspase-3 protein in the
simvastatin group was significantly lower than that of the
ischemia reperfusion group (P<0.05).
Simvastatin has a protective effect on
myocardial ischemia-
reperfusion injury, which may be related to the reduction of
caspase-3 expression and inhibition of apoptosis.