血清同型半胱氨酸、可溶性基质裂解素2和胱抑素C对慢性心力衰竭的诊断价值研究

Diagnostic value of serum homocysteine, soluble stromelysin 2 and cystatin C for chronic heart failure

目的:探讨血清同型半胱氨酸(Hcy)、可溶性基质裂解素2(sST2)和胱抑素C(CysC)对慢性心力衰竭(CHF)的诊断价值。方法:选择本院收治的86例CHF患者作为CHF组,选择同期体检健康者86例作为健康对照组。检测两组血清Hcy、sST2、CysC水平、血浆氨基末端脑钠肽前体(NT-proBNP)和心功能指标[左房内径(LAD)、左室舒张末期内径(LVEDd)、左室射血分数(LVEF)]并进行比较,采用Pearson相关分析血清Hcy、sST2和CysC与NT-proBNP、心功能指标的相关性,并绘制受试者工作特征(ROC)曲线评估血清Hcy、sST2和CysC联合检测对CHF的诊断价值。结果:与健康对照组比较,CHF组血清Hcy、sST2、CysC水平,血浆NT-proBNP水平和LAD、LVEDd均显著增加,LVEF显著降低(P均=0.001)。血清Hcy、sST2和CysC水平与血浆NT-proBNP水平、LAD、LVEDd均呈显著正相关性(r=0.385~0.511,P<0.05或<0.01),与LVEF呈显著负相关(r=-0.424~-0.402,P均<0.05)。血清Hcy、sST2和CysC单项检测诊断CHF的AUC分别为0.624、0.720和0.807,三项指标联合检测诊断CHF的AUC为0.865,显著大于各指标单独检测(P<0.05或<0.01)。结论:血清Hcy、sST2和CysC水平在CHF患者中异常升高,可作为CHF辅助诊断指标,三者联合检测对CHF的诊断具有重要意义。

Objective:To investigate the diagnostic value of serum homocysteine(Hcy),soluble stromelysin 2(sST2)and cystatin C(CysC)for chronic heart failure(CHF).Methods:A total of 86 CHF patients admitted in our hospital were selected as CHF group,and 86 healthy individuals who underwent physical examination simultaneously were selected as healthy control group.Serum levels of Hcy,sST2 and CysC,plasma level of N terminal pro brain natriuretic peptide(NT-proBNP)and cardiac function indexes[left atrial diameter(LAD),left ventricular end diastolic diameter(LVEDd),left ventricular ejection fraction(LVEF)]were measured between two groups.Pearson correlation analysis was used to analyze the correlation among serum Hcy,sST2,CysC,plasma NT-proBNP and cardiac function indexes.Receiver operating characteristic curve(ROC)was drawn to evaluate the diagnostic value of serum Hcy,sST2 and CysC and their combined detection for CHF.Results:Compared with healthy control group,there were significant rise in serum levels of Hcy,sST2 and CysC,plasma NT-proBNP level,LAD and LVEDd,and significant reduction in LVEF in CHF group,P=0.001 all.Pearson correlation analysis indicated that serum Hcy,sST2 and CysC levels were significant positively correlated with plasma NT-proBNP level,LAD and LVEDd(r=0.385~0.511,P<0.05 or<0.01),and significant inversely correlated with LVEF(r=-0.424~-0.402,P<0.05 all).AUC of single detection of serum Hcy,sST2 and CysC diagnosing CHF was 0.624,0.720 and 0.870 respectively,and AUC of their combination was 0.865,which was significantly higher than any single detection,P<0.05 or<0.01.Conclusion:Serum levels of Hcy,sST2 and CysC abnormally increase in CHF patients,which can be used as auxiliary diagnostic indexes for CHF.The triple combined detection is of great significance for the diagnosis of CHF.