Am J Resp Crit Care:产前暴露硝酸盐和儿童哮喘有何关系!

2017-07-04 xing.T MedSci原创

由此可见,敏感时间窗期间产前NO3-暴露与同时暴露于高产前压力的男孩哮喘的发生相关。

环境污染对儿童哮喘的影响可能因性别、暴露剂量和时机而异。心理压力也可以改变污染物对哮喘的效应。这些相关性没有在子宫内环境硝酸盐暴露中进行评估。近日,呼吸内科以及重症医学领域权威杂志Am J Resp Crit Care上发表了一篇研究文章,研究人员采用贝叶斯分布滞后相互作用模型(BDLIMs)旨在确定NO3-对儿童哮喘影响的敏感产前时间窗,考虑性别和压力对这一效应的影响。

该研究的分析纳入了752个母子配对组合。妊娠期每日环境硝酸盐(NO3-)暴露是使用混合化学转运(Geos-Chem)/土地利用的回归模型和自然对数(ln)转化得出的。产前母体压力由负性生活事件(NLEs)得分来评估[高(≥3)vs. 低(<3)]。该研究的结局是在儿童6岁时经临床医师诊断的哮喘。

研究人员发现大多数母亲是西班牙裔(54%)或黑人(29%),未接受过中学教育(66%),从未吸烟(80%),并且报告的产前压力低(58%); 15%的儿童患哮喘。调整孕产妇年龄、种族、教育程度、妊娠前肥胖、过敏和吸烟状态的BDILMs确定了两个敏感的时间窗为:7-19和33-40孕周,在此期间增加的NO3-与较高的哮喘可能性相关,特别是在报告高产前压力的生出男孩的母亲中。在这个亚组中,NO3-的累积效应也是显著的(NO3-每增加IQR的比值比为2.64,95%CI为1.27-5.39)。

由此可见,敏感时间窗期间产前NO3-暴露与同时暴露于高产前压力的男孩哮喘的发生相关。

原始出处:

Sonali Bose , et al. Prenatal Nitrate Exposure and Childhood Asthma: Influence of Maternal Prenatal Stress and Fetal Sex. AM J RESP CRIT CARE 2017. https://doi.org/10.1164/rccm.201702-0421OC.

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    2017-07-15 paperyu
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    2017-07-06 qilu_qi
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    2017-07-05 天涯183

    非常好的文章,学习了,很受益

    0

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    2017-07-05 184****9840

    学习了受益匪浅

    0