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Anti-Apolipoprotein A-l IgG Levels Predict Coronary Artery Calcification in Obese but Otherwise Healthy Individuals

机译:抗脂蛋白A-L IgG水平预测肥胖的冠状动脉钙化,但其他健康的个人

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摘要

We aimed at determining whether anti-apolipoprotein (apo) A-l IgG levels are independent predictors of coronary artery calcification (CAC) and coronary endothelial dysfunction in obese and nonobese subjects without cardiovascular disease. 48 nonobese and 43 obese subjects were included. CAC score was measured by thorax scanner and denned by an Agatston score > 0. Coronary endothelial dysfunction was determined by measuring myocardial blood flow responses to cold pressor test (CPT) on PET/CT. Serum anti-apoA-1 IgG levels were measured by ELISA. Prevalence of coronary calcification was similar between the two study groups, but the prevalence of coronary endothelial dysfunction was higher in obese subjects. Anti-apoA-1 IgG levels and positivity rate were higher in obese than in nonobese individuals. CAC score was higher in anti-apoA-1 IgG positive subjects. ROC analyses indicated that anti-apoA-1 IgG levels were significant predictors of CAC > 0, but not of coronary endothelial dysfunction with a negative predictive value of 94%. Anti-apoA-1 IgG positivity was associated with a 17-fold independent increased risk of CAC>0. In conclusion, those preliminary results indicate that anti-apoA-1 IgG autoantibodies are raised in obese subjects and independently predict the presence of coronary calcification in this population but not the presence of coronary endothelial dysfunction.
机译:我们旨在确定抗脂蛋白(APO)A-L IgG水平是否是冠状动脉钙化(CAC)的独立预测因子,肥胖和非因素的冠状动脉内皮功能障碍没有心血管疾病。包括48个非同事和43个肥胖的受试者。 CAC评分由胸部扫描仪测量,通过agatston得分判定> 0.通过测量PET / CT上的冷压力试验(CPT)测定心肌血流反应来确定冠状内皮功能障碍。通过ELISA测量血清抗APOA-1 IgG水平。两项研究组之间的冠状动脉钙化患病率相似,但肥胖受试者的冠状动脉内皮功能障碍的患病率较高。肥胖的抗ApoA-1 IgG水平和阳性率均高于非同一个体。抗APOA-1 IgG阳性受试者的CAC评分较高。 ROC分析表明,抗APOA-1 IgG水平是CAC> 0的显着预测因子,但不具有冠状动脉内皮功能障碍,负预测值为94%。抗ApoA-1 IgG阳性与17倍的独立的CAC> 0的风险有关。总之,这些初步结果表明,抗APOA-1 IgG自身抗体在肥胖受试者中提出,并独立预测该群体中冠状动脉钙化的存在,但不是冠状动脉内皮功能障碍的存在。

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