JAHA:慢性心力衰竭患者去甲肾上腺素水平与铁状态异常之间的关系

2019-02-14 xing.T 网络

由此可见,在慢性心力衰竭患者中,用去甲肾上腺素水平估计的交感神经活化增加与铁状态受损有关,特别是生物标志物的失调表明铁转运受损和铁需求增加。在未来的研究中,需要阐明去甲肾上腺素和铁代谢之间的关系是否是双向的,并且存在因果关系。

慢性心力衰竭患者铁稳态失调的机制尚未解决。在心肌细胞模型中,去甲肾上腺素可导致细胞内铁耗尽,但儿茶酚胺(交感神经激活标记物)与慢性心力衰竭铁代谢生物标志物之间的潜在关联尚不清楚。

近日,血管疾病领域权威杂志JAHA上发表了一篇研究文章,在这项横断面分析中,研究人员分析了前瞻性队列中742名慢性心衰患者(平均年龄为72±11岁;男性为56%)血浆去甲肾上腺素水平与血清​铁状态生物标志物之间的关联,铁状态指标包含铁储存指标(铁蛋白)、铁转运指标(转铁蛋白饱和度)和铁需求指标(可溶性转铁蛋白受体)。铁受损状态定义为铁蛋白<100μg/L或转铁蛋白饱和度<20%。

69%的患者观察到铁状态受损。在多变量模型中,较高的去甲肾上腺素水平与铁转运受损相关(转铁蛋白饱和度<20%,比值比=2.28; 95%CI为[1.19-4.35]; P=0.013),但铁储备未受损(铁蛋白<100μg) /L,比值比=1.25; 95%CI为[0.73-2.16]; P=0.415)。去甲肾上腺素是铁需求增加(可溶性转铁蛋白受体,标准化β系数=0.12; P=0.006)和低转铁蛋白饱和度(标准化β系数=-0.12; P=0.003)的重要预测因子。然而,去甲肾上腺素水平与铁或铁蛋白水平无关(P>0.05)。铁状态受损患者的调整后去甲肾上腺素边际平均值显著高于铁状态正常者(528 pg/mL [505-551] vs. 482 pg/mL [448-518]; P=0.038)。

由此可见,在慢性心力衰竭患者中,用去甲肾上腺素水平估计的交感神经活化增加与铁状态受损有关,特别是生物标志物的失调表明铁转运受损和铁需求增加。在未来的研究中,需要阐明去甲肾上腺素和铁代谢之间的关系是否是双向的,并且存在因果关系。

原始出处:

Pedro Moliner.et al.Association Between Norepinephrine Levels and Abnormal Iron Status in Patients With Chronic Heart Failure: Is Iron Deficiency More Than a Comorbidity?.JAHA.2019.https://www.ahajournals.org/doi/full/10.1161/JAHA.118.010887

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    2019-02-16 zhaohui6731
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    2019-02-14 王秀

    学习了,涨知识了!

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