血清PCSK9水平对急性心肌梗死患者PCI术后MACE的预测价值

Predictive value of serum PCSK9 level for MACE in patients with acute myocardial infarction after PCI

目的:探讨血清前蛋白转化酶枯草溶菌素9(PCSK9)水平对急性心肌梗死(AMI)患者经皮冠状动脉介入(PCI)术后主要不良心血管事件(MACE)的预测价值。方法:将2016年5月~2020年8月本院收治的585例行PCI术的AMI患者纳入研究。收集患者一般资料和术前血清PCSK9水平。根据术后1年MACE发生情况,患者被分为MACE组(152例)与无MACE组(433例)。分析血清PCSK9水平与血脂的相关性,及AMI患者PCI术后1年发生MACE的影响因素,并分析血清PCSK9水平对AMI患者PCI术后1年发生MACE的预测价值。结果:术后随访1年,MACE发生率为25.98%(152/585)。与无MACE组比较,MACE组术前Gensini评分、年龄≥60岁、多个梗死部位、病变支数≥2支、高血压、糖尿病、高脂血症、LVEF<50%、术后慢血流/无复流比例、血清PCSK9水平[51.95(46.82,56.58)ng/ml比72.24(62.37,73.88)ng/ml]均显著升高,P均<0.01。Spearman相关性分析显示,AMI患者血清PCSK9水平与总胆固醇(TC)、低密度脂蛋白胆固醇(LDL-C)水平呈显著正相关(r=0.728,0.784,P=0.014,0.008)。多因素Logistic回归分析显示年龄≥60岁、术前Gensini评分、多个梗死部位、病变支数≥2支、高血压、糖尿病、高脂血症、LVEF<50%、术后慢血流/无复流、血清PCSK9水平均为AMI患者PCI术后1年内发生MACE的独立危险因素(OR=2.757~6.888,P均<0.01)。ROC曲线分析显示,血清PCSK9水平预测AMI患者PCI术后1年内发生MACE的截断值为59.11ng/ml,灵敏度、特异度、AUC(95%CI)分别为88.72%、77.37%、0.871(0.841~0.897),说明血清PCSK9水平对其具有较好的预测价值。结论:血清PCSK9高水平可增加AMI患者PCI术后MACE的发生风险,且对其具有较好的预测价值。

Objective:To investigate the predictive value of serum proprotein convertase subtilisin/kexin 9(PCSK9)level for major adverse cardiovascular events(MACE)in patients with acute myocardial infarction(AMI)after percutaneous coronary intervention(PCI).Methods:A total of 585 AMI patients who underwent PCI in our hospital from May 2016 to Aug 2020 were enrolled.General data and preoperative serum PCSK9 level were collected.According to presence of MACE within one year after PCI,patients were divided into MACE group(n=152)and no MACE group(n=433).Correlation between blood lipids and serum PCSK9 level,and influencing factors for MACE within one year after PCI in AMI patients were analyzed.And the predictive value of serum PCSK9 level for MACE within one year after PCI in AMI patients was analyzed.Results:After one year follow-up,the incidence rate of MACE was 25.98%(152/585).Compared with no MACE group,there were significant rise in preoperative Gensini score,proportions of age≥60 years,multiple infarcted sites,number of diseased vessels≥2,hypertension,diabetes,hyperlipidemia,LVEF<50%and postoperative slow-flow/no-reflow,serum PCSK9 level[51.95(46.82,56.58)ng/ml vs.72.24(62.37,73.88)ng/ml]in MACE group,P<0.01 all.Spearman correlation analysis indicated that in AMI patients,serum PCSK9 level was significant positively correlated with levels of total cholesterol(TC)and low density lipoprotein cholesterol(LDL-C)(r=0.728,0.784,P=0.014,0.008).Multivariate Logistic regression analysis indicated that age≥60 years,preoperative Gensini score,multiple infarcted sites,number of diseased vessels≥2,hypertension,diabetes,hyperlipidemia,LVEF<50%,slow-flow/no-reflow after PCI,serum PCSK9 level were independent risk factors for MACE within one year after PCI in AMI patients(OR=2.757~6.888,P<0.01 all).ROC curve analysis indicated that cut-off value,sensitivity,specificity and AUC(95%CI)of serum PCSK9 level was 59.11 ng/ml,88.72%,77.37%and 0.871(0.841~0.897)respectively for predicting MACE within one year after PCI in AMI patients,suggesting serum PCSK9 level possessed good predictive value for it.Conclusion:High serum PCSK9 level can increase the risk of MACE after PCI in AMI patients,which has good predictive value for it.