首页> 外文期刊>EBioMedicine >IgM anti-malondialdehyde low density lipoprotein antibody levels indicate coronary heart disease and necrotic core characteristics in the Nordic Diltiazem (NORDIL) study and the Integrated Imaging and Biomarker Study 3 (IBIS-3)
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IgM anti-malondialdehyde low density lipoprotein antibody levels indicate coronary heart disease and necrotic core characteristics in the Nordic Diltiazem (NORDIL) study and the Integrated Imaging and Biomarker Study 3 (IBIS-3)

机译:IgM抗丙二醛低密度脂蛋白抗体水平在北欧地尔硫卓(NORDIL)研究和综合成像与生物标志物研究3(IBIS-3)中表明了冠心病和坏死核心特征

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Background Certain immunoglobulins (Ig) are proposed to have protective functions in atherosclerosis. Objectives We tested whether serum levels of IgG and IgM autoantibodies against malondialdehyde low density lipoprotein (MDA-LDL) are associated with clinical coronary heart disease (CHD) and unfavorable plaque characteristics. Methods NORDIL was a prospective study investigating adverse cardiovascular outcomes in hypertensive patients. IBIS-3 analyzed lesions in a non-culprit coronary artery with Findings From 10,881 NORDIL patients, 87 had serum sampled at baseline and developed CHD over 4.5?years, matched to 227 controls. Higher titers of IgM anti-MDA-LDL had a protective effect on adverse outcomes, with odds ratio 0.29 (0.11, 0.76; p?=?0.012; p?=?0.016 for trend). Therefore, the effect was explored at the lesional level in IBIS-3. 143 patients had blood samples and RF-IVUS measurements available, and NIRS was performed in 90 of these. At baseline, IgM anti-MDA-LDL levels had a strong independent inverse relationship with lesional necrotic core volume (p?=?0.027) and percentage of plaque occupied by necrotic core (p?=?0.011), as well as lipid core burden index (p?=?0.024) in the worst 4?mm segment. Interpretation Our study supports the hypothesis that lower circulating levels of IgM anti-MDA-LDL are associated with clinical CHD development, and for the first time relates these findings to atherosclerotic plaque characteristics that are linked to vulnerability.
机译:背景技术某些免疫球蛋白(Ig)被提议在动脉粥样硬化中具有保护功能。目的我们测试了针对丙二醛低密度脂蛋白(MDA-LDL)的IgG和IgM自身抗体的血清水平是否与临床冠心病(CHD)和不良斑块特征相关。方法NORDIL是一项前瞻性研究,旨在研究高血压患者的不良心血管预后。 IBIS-3分析了非罪犯冠状动脉中的病变,发现10,881名NORDIL患者中,有87名在基线时进行了血清采样,并在4.5年内发展为CHD,与227名对照相匹配。较高效价的IgM抗MDA-LDL对不良结局具有保护作用,比值比为0.29(趋势为0.11,0.76; p <= 0.012; p == 0.016)。因此,在IBIS-3的病变水平探讨了这种作用。 143例患者有血液样本并可以进行RF-IVUS测量,其中90例患者进行了NIRS。在基线时,IgM抗MDA-LDL水平与病变坏死核心体积(p?=?0.027)和坏死核心所占的斑块百分比(p?=?0.011)以及脂质核心负荷有很强的独立反比关系。最差4?mm段中的指数(p?=?0.024)。解释我们的研究支持以下假说:IgM抗MDA-LDL的循环水平降低与临床冠心病的发展有关,并且首次将这些发现与动脉粥样硬化斑块特征相关联,而动脉粥样硬化斑块特征与脆弱性有关。

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