Clin Chem:新的脂质生物标志物板用于检测低射血分数性心力衰

2017-06-08 luowenbo MedSci原创

该研究在于寻找一种新的代谢组学生物标志物用于诊断射血分数降低性心力衰竭(HFrEF). 研究纳入887名试验参与者,其中缺血性HFrEF患者(ICMP)为257名,非缺血性HFr EF患者(NICMP)为269名,健康对照者为327名,肺动脉疾病患者为34名。先后进行单中心识别研究(N=238)和多中心验证研究(N=649).对单中心研究中的血浆样本进行代谢谱分析,识别可作为HFrEF潜在

该研究在于寻找一种新的代谢组学生物标志物用于诊断射血分数降低性心力衰竭(HFrEF)。

研究纳入887名试验参与者,其中缺血性HFrEF患者(ICMP)为257名,非缺血性HFr
EF患者(NICMP)为269名,健康对照者为327名,肺动脉疾病患者为34名。先后进行单中心识别研究(N=238)和多中心验证研究(N=649).对单中心研究中的血浆样本进行代谢谱分析,识别可作为HFrEF潜在生物标志物的代谢特征。在多中心队例研究中对选定的代谢特征进行常规测定,并为其起草一项分析协议。

结果发现,在单中心研究中,与健康对照者相比,181项已知化学特性的代谢特征中92项(51%)在HFrEF患者中存在显着的差异(P<0.05).选择属于鞘磷脂、甘油三酯和磷脂酰胆碱脂质类型的3种特异性代谢组学特征作为心脏脂质板(CLP),并在多中心研究中依据分析协议进行分析研究。CLP和N段前B型钠尿肽(NT-proBNP)结合使用,对HFrEF患者和健康对照者进行比较,曲线下面积为0.97(灵敏度为80.2%,特异性为97.6%),显着优于采用单一NT-proBNP指标比较HFrEF患者和健康对照者(曲线下面积为0.93,灵敏度为81,7%,特异性为88.1%,P<0.001).即使在左心室射血分数轻度降低的亚组和无症状患者中,CLP与NT-proBNP联合法也明显优于NT-proBNP单一法,分别为0.94vs0.87(P<0.001)和0.95vs0.91(P<0.05)。

新的代谢组学生物标志物板具有提高HFrEF检测的潜力,即使在轻度或无症状阶段。而观察到的变化进一步表明HFrEF机制中脂质的改变。

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