【摘要】 心肌梗死致心力衰竭猝死者 ,心肌细胞存在凋亡现象。基因蛋白bcl-2和Bax对心肌凋亡具有调控作用。急性肌梗死灶周围有bcl-2 表达 ,陈旧性心肌梗死灶周围心肌细胞Bax表达明确更多还原

【Abstract】 In general, myocyte death in myocardial infarctions (MI) is attributed to necrosis, but recently the involvement of apoptosis has been suggested. Loss of myocytes is an important mechanism in the development of cardiac failure of either ischemic or nonischemic origin. The expression of two proto-oncogenes influence apoptosis. Myocytes with positive bcl-2 immunoreactivity were seen in the heart of acute MI, localized only in the salvaged areas surrounding the infarcted tissues. Myocytes with overexpressed positive Bax immunoreactivity were observed in the salvaged areas of old MI.更多还原