Am J Respir Crit Care Med:高剂量维生素D3能否助力抗结核治疗?

2017-09-18 吴星 环球医学

现有关于维生素D辅助治疗肺结核(PTB)的试验受到样本量小、剂量方案不足和受试者较高的基线维生素状态等多方面的限制。缺乏关于利用基因多态性分析维生素D通路对于维生素D补充应答影响的综合分析。2017年9月,发表在《Am J Respir Crit Care Med》的一项随机对照研究调查了高剂量维生素D3在抗结核治疗中的作用。



现有关于维生素D辅助治疗肺结核(PTB)的试验受到样本量小、剂量方案不足和受试者较高的基线维生素状态等多方面的限制。缺乏关于利用基因多态性分析维生素D通路对于维生素D补充应答影响的综合分析。2017年9月,发表在《Am J Respir Crit Care Med》的一项随机对照研究调查了高剂量维生素D3在抗结核治疗中的作用。

目的:考察高剂量维生素D3对抗菌疗法治疗PTB的影响,并评价维生素D通路基因中的单核苷酸多态性(SNPs)对维生素D3辅助治疗的影响。

方法:研究者开展了一项临床试验,纳入蒙古乌兰巴托390例PTB成人患者,这些患者在密集抗结核治疗期被随机分配至接受4个2周1次3.5 mg(140000 IU)维生素D3(n=190)或安慰剂(n=200)。

测量指标和主要结果:该干预提升了8周血清25-羟基维生素D的浓度(阳性组vs安慰剂组154.5 nmol/L vs 15.2 nmol/L ,差值置信区间95% CI 125.9~154.7 nmol/L,P<0.001),但并不影响痰培养转阴时间(校正风险比 [aHR] 1.09,95% CI 0.86~1.36,P=0.48)。在基因编码维生素D受体(rs4334089,rs11568820)和25 -羟基维生素D 1-alpha羟化酶(CYP27B1: rs4646536)中,维生素D辅助治疗加速了携带1个或多个SNPs次要等位基因的患者的痰培养转阴时间(aHR≥1.47,相互作用P≤0.02)。

结论:维生素D3未影响总体研究受试者痰培养转阴时间。干预的影响受到VDR和CYP27B1中SNPs的修饰。

原始出处:

Ganmaa D, et al. High-Dose Vitamin D3 during Tuberculosis Treatment in Mongolia. A Randomized Controlled Trial. Am J Respir Crit Care Med. 2017 Sep 1;196(5):628-637. doi: 10.1164/rccm.201705-0936OC.

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    2018-06-20 amy0550
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    2017-09-20 wgx309
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