地奥心血康对心肌缺血再灌注犬的心肌细胞膜结构与功能的影响

１６只成年杂种犬复制心肌缺血再灌注模型，分为地奥心血康（ＤＡＸＸＫ）治疗组和生理盐水（ＮＳ）对照组。结果表明，ＤＡＸＸＫ组血清胞内酶（ＡＳＴ，ＣＫ和ＬＤＨ）水平的增高低于ＮＳ组；心肌细胞膜Ｎａ＋，Ｋ＋－ＡＴＰ酶和Ｍｇ２＋－ＡＴＰ酶比活性高于ＮＳ组；心肌细胞膜ＬＰＯ含量低于ＮＳ组；心肌组织ＳＯＤ水平高于ＮＳ组。心肌电镜观察显示，ＤＡＸＸＫ可维持心肌细胞膜的完整性。＊Ｐ＜０．０１。图２ＤＡＸＸＫ组心肌细胞超微结构（×１２０００倍）细胞膜完整，肌原纤维排列整齐，少数线粒体稍肿胀讨论随着溶栓等疗法的成功应用，发现缺血再灌注可造成组织损伤［６］。寻找有效的抗缺血再灌注损伤的药物，可减轻其对组织损伤的程度。我们的实验证明，ＤＡＸＸＫ可明显降低血清酶水平，在一定程度上保持了膜结构的完整性。心肌超微结构的观察也证明了这一点。心肌缺血再灌注情况下，氧自由基对生物膜的损伤起了很重要的作用［７］。本实验发现，ＤＡＸＸＫ组心肌细胞膜ＬＰＯ含量明显低于ＮＳ组，与维持细胞内环境稳定有关的Ｎａ＋，Ｋ＋－ＡＴＰ酶、Ｍｇ２＋－ＡＴＰ酶比活性，ＤＡＸＸＫ组高于ＮＳ组，并且，Ｎａ＋，Ｋ＋－ＡＴＰ酶比活性与ＬＰＯ含量呈显著的负相关关系。提示由氧自?

Effects of Di-ao-xin-xue-kang on structure and function of myocardial cell membrane in myocardial ischemic and reperfusing dogs

Sixteen adult mongrel dogs with myocardial ischemia and reperfusion injury were randomly divided into Di-ao-xin-xue-kang treated group(DAXXK)and normal saline group(NS).The results demonstrated that the elevated degrees of AST,CK and LDH in serum were much lower in DAXXK than that in NS;Na+,K+-ATPase and Mg2+-ATPase activities of myocardial cell membrane in DAXXK were markedly higher than those in NS; the LPO content of myocardial cell membrane in NS was higher than that in DAXXK. DAXXK obviously increased level of SOD in myocardium in comparison with NS. DAXXK showed protective action on ultrastructural integrity of myocardial cell membrane.