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Circulating levels of autoantibodies to oxidized low-density lipoprotein and C-reactive protein levels correlate with endothelial function in resistance arteries in men with coronary heart disease

机译:氧化性低密度脂蛋白和C反应蛋白水平的自身抗体循环水平与冠心病男性抵抗动脉的内皮功能相关

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The association between C-reactive protein (CRP) and future cardiovascular risk has been of particular interest during recent years. Oxidized low-density lipoprotein (ox-LDL) is another marker linking the immune system with the atherogenic process. The aim of this study was to examine whether ox-LDL and CRP were associated with endothelial function in peripheral resistance arteries. Twenty-five men with a previous hospital-diagnosed myocardial infarction were enrolled in the study. The exclusion criterion was a history of diabetes mellitus. IgG and IgM autoantibodies to malonyldialdehyde low-density lipoprotein (MDA-LDL) and high-sensitivity CRP (hs-CRP) were measured. Flow-mediated dilatation was measured in isolated resistance arteries from subcutaneous fat biopsies. Endothelial function test reflecting the maximum vessel dilatation in male subjects was inversely related to MDALDL IgG autoantibody levels (r = −0.6 and P = 0.003). Comparison of hs-CRP levels and of maximum vessel dilatation in males revealed also an inverse relation (r= −0.4 and P = 0.04). In conclusion, a clear correlation exists between flow-mediated dilatation in subcutaneous resistance arteries and plasma levels of MDA-LDL IgG autoantibody and CRP in male patients with coronary heart disease.
机译:近年来,C反应蛋白(CRP)与将来的心血管风险之间的关联引起了人们的特别关注。氧化的低密度脂蛋白(ox-LDL)是将免疫系统与动脉粥样硬化过程联系在一起的另一个标记。这项研究的目的是检查ox-LDL和CRP是否与周围阻力动脉的内皮功能有关。该研究纳入了25名先前经医院诊断为心肌梗塞的男性。排除标准是糖尿病史。测量了丙二酰二醛低密度脂蛋白(MDA-LDL)和高灵敏度CRP(hs-CRP)的IgG和IgM自身抗体。在皮下脂肪活检组织中分离出的阻力动脉中测量流量介导的扩张。反映男性受试者最大血管扩张的内皮功能测试与MDALDL IgG自身抗体水平呈负相关(r = -0.6和P = 0.003)。男性中hs-CRP水平和最大血管扩张的比较也显示出反比关系(r = -0.4和P = 0.04)。总之,在男性冠心病患者中,皮下阻力动脉的血流介导的扩张与血浆MDA-LDL IgG自身抗体和CRP水平之间存在明显的相关性。

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