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骨激素水平可预测心力衰竭死亡

By LabMedica International staff writers
Posted on 22 Nov 2010
血液循环中的骨激素水平可预测急性冠脉综合征后心力衰竭导致的死亡和住院治疗。

骨保护素水平是肿瘤坏死因子受体大家族的成员之一,可通过单克隆抗体酶联免疫吸附测定(ELISA)测量。

挪威阿克斯胡斯大学医院(Lørenskog, Norway; www.med.uio.no)研究了1229名来自51个临床中心的慢性心力衰竭(CHF)病人血浆中的OPG水平。研究人员使用市售的单克隆抗体(R&D Systems; Abingdon, UK; www.rndsystems.com),通过本院从ELISA改造的时间分辨免疫荧光法定量测量了OPG水平。对OPG的检测限为15纳克/升。

在中值为3.9年的随访期内,有332例死亡,791例因心血管原因死亡或者住院。OPG的中值为1509纳克/升(四分位距:1,102-2,185纳克/升)。血液循环中的OPG水平和若干常规风险标记物相关。OPG水平较高的病人多为老年人、女性、以更高的功能性评估值为表征的更严重的心力衰竭以及缺血性心力衰竭。

这项关于CHF病人研究的最主要发现是血液循环中的OPG浓度与全因死亡率以及死亡率或心血管事件这两者联合终点的发生有很强而独立的关联。然而,重新分类分析表明,统计意义明显的相关性并不能在临床意义上改善心力衰竭病人的风险分层。结果显示,OPG水平最高的三分之一患者在随访期间死亡的可能性是OPG水平最低三份之一患者的两倍。

研究论文的领衔作者Torbjørn Omland博士说:"该发现的有趣之处不仅在于它显示了骨代谢和心脏病的关系,而且在于它也许有助于发现那些处于极大危险中的心力衰竭患者。作为医生的我们就能针对那些患者早点采取强化治疗。”该研究结果发表在2010年8月号的《美国心脏杂志》(www.ahjonline.com)。

Related Links:
Akershus University Hospital >>> www.med.uio.no
R&D Systems >>> www.rndsystems.com
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