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Resistance of the myocardium to ischemia and efficacy of myocardial preconditioning in experimental diabetes mellitus

机译:心肌对实验性糖尿病在实验性糖尿病中心肌预处理的缺血和疗效的抵抗力

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Data on myocardial tolerance of ischemia in the animals with experimental diabetes are controversial. In our study, myocardial sensitivity to ischemia and infarction-limiting effect of ischemic preconditioning have been investigated in the in vivo rat model of myocardial infarction in alloxan-induced insulin-dependent diabetes mellitus. It has been shown that in 6 weeks after alloxan injection in the diabetic rats infarction size as determined by TTC staining was significantly smaller than in healthy controls (39.8 +/- 8.8 and 62.3 +/- 6.6%, respectively, p < 0.01). Also, occurrence of ischemic tachyarrhythmias was more rare in diabetic rats than in controls. A single episode of ischemic preconditioning in diabetic rats showed a much lesser protection against infarction than in controls. Therefore, the data obtained support the existence of endogenous protective myocardial phenotype in diabetes, although the effectiveness of ischemic preconditioning in diabetes is reduced. zhurnal imeni I.M. Sechenova / Rossi inverted question markskaia akademiia nauk.
机译:关于实验糖尿病动物在动物中缺血性缺血的心肌耐受性的数据是有争议的。在我们的研究中,在体内大鼠诱导的胰岛素依赖性糖尿病Mellitus中的体内大鼠心肌梗死模型中研究了对缺血和缺血预处理的缺血预处理梗死的限制效果的心肌敏感性。已经表明,在糖尿病大鼠中,在糖尿病大鼠梗死中的6周内,通过TTC染色测定的梗死大小明显小于健康对照(39.8 +/- 8.8和62.3 +/- 6.6%,P <0.01)。此外,缺血性心律失常的发生比对照组更罕见。在糖尿病大鼠中缺血预处理的单一情节表现出对梗死的较小保护而不是对照组。因此,所获得的数据支持在糖尿病中存在内源性保护性心肌表型,尽管糖尿病中缺血预处理的有效性降低。伊彭·伊梅尼I.M.Sehenova / Rossi倒立问题Markskaia Akademiia Nauk。

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