摘要目的:探讨我国人群携带载脂蛋白E的HDL-C（APOE-HDL-C）与冠心病发病风险的关系。方法:选择中国多省市心血管病队列研究中参加2002年或2007年心血管病危险因素调查并随访至2013年12月31日的研究对象5 417人（排除基线有心血管病者）。检测研究对象基线APOE-HDL-C和总HDL-C水平。计算APOE-HDL-C/总HDL-C比值。采用Cox比例风险模型分析HDL-C相关指标与冠心病发病风险的关系。结果:研究对象平均随访6.8年，发生急性冠心病事件100例。调整潜在混杂因素后，基线HDL-C相关指标与冠心病发病风险显著负相关。与APOE-HDL-C/总HDL-C比值最低四分位组相比，最高四分位组的急性冠心病事件发病相对风险降低74%（ HR=0.26，95% CI：0.12~0.71）。APOE-HDL-C/总HDL-C比值最高分位组的个体冠心病预测发病绝对风险最低［0.48%（0.44%~0.52%）］，显著低于HDL-C最高分位组个体冠心病预测发病绝对风险［0.83%（0.78%~0.88%）］。 结论:基线APOE-HDL-C/总HDL-C比值与急性冠心病事件发病风险显著负相关。APOE-HDL-C/总HDL-C比值升高者的冠心病预测发病绝对风险显著低于总HDL-C升高者。研究结果提示APOE-HDL-C可作为反映HDL抗动脉粥样硬化功能的新生物标志物。

abstractsObjective:To assess whether apolipoprotein E-containing HDL-C (APOE-HDL-C) is causally associated with coronary heart disease (CHD) risk.Methods:In total, 5 417 cardiovascular disease-free participants at baseline were followed up for up to 10 years in the Chinese Multi-provincial Cohort Study. APOE-HDL-C and HDL-C were measured in all participants. APOE-HDL-C/total HDL-C ratio was calculated. Multivariate Cox regression was employed to assess the association between HDL-C related biomarkers and 10-year CHD incident risk.Results:A total of 100 incident CHD events occurred during a mean 6.8 years follow-up. High levels of baseline HDL-C related biomarkers were significantly negatively associated with incident CHD risk. Comparison with participant with lowest level of APOE-HDL-C/total HDL-C ratio, those with highest level of APOE-HDL-C/total HDL-C ratio had 74% decreased risk of CHD ( HR=0.26, 95% CI: 0.12-0.71). The individual with the highest level of APOE-HDL-C/total HDL-C ratio had the lowest absolute risk[0.48% (0.44%-0.52%)] of CHD, which was significantly lower than that [0.83% (0.78%-0.88%)] of the individual with the highest level of HDL-C. Conclusions:Our findings revealed that the APOE-HDL-C/total HDL-C ratio was significantly related to a 10-year increased risk of incident CHD, even beyond HDL-C. It seemed that APOE-HDL-C could serve as a new indicator of the anti-atherosclerotic function of HDL.