Expression of ADAMTS4 in the heart of myocardial infarction rat / 国际生物医学工程杂志

ABSTRACT

Objective To detect the expression of a disintegrin and metalloproteinase with thrombospondin motifs 4 (ADAMTS4),Versican,and Aggrecan in hearts of myocardial infarction rats.Methods Male Wistar rats were chosen to make myocardial infarction model.Fifteen rats were randomly assigned into the myocardial infarction group and five rats into the sham-operation group.Rats were killed 3 d after surgery and the left ventricles were taken to produce frozen section.ADAMTS4,Versican,and Aggrecan protein expressions were detected by imnunohistochemistry method.Results ADAMTS4 expressed in myocardial cells at marginal zone of the infarcted area.ADAMTS4 expressed weakly while Versican expressed strongly in capillary endothelial cells of marginal zone of the infarcted area.Aggrecan showed no expression in the cardiac tissue and vascular endothelium of both myocardial infarction group and sham-operation group.Conclusions ADAMTS4 is involved in the inflammation after myocardial infarction.Degradation of ADAMTS4 to Versican exists in the vessels after myocardial infarction.Aggrecan is not involved in the pathophysiological process of myocardial infarction.