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NEJM:微生物环境暴露有利于预防儿童哮喘(附MedSci点评)

2011-10-19 Markus J. Ege NEJM

MedSci专家评论:有关儿童微生物暴露与哮喘的关系,在2001年新英格兰杂志上提出假说,到2011年,两个大规模试验证实,是划时代的。它反应了儿童“脏”一点,有利于预防哮喘。在中国农村儿童哮喘比例极低,仅1.5%左右,而城市超过15%,而且在快速增加,但其根源一直没有可靠的证据。但是这项研究仍然没有告诉我们以下问题,如果有兴趣的朋友可以深入研究: (1)微生物暴露(脏一点)在儿童出生6个月内暴

MedSci专家评论:有关儿童微生物暴露与哮喘的关系,在2001年新英格兰杂志上提出假说,到2011年,两个大规模试验证实,是划时代的。它反应了儿童“脏”一点,有利于预防哮喘。在中国农村儿童哮喘比例极低,仅1.5%左右,而城市超过15%,而且在快速增加,但其根源一直没有可靠的证据。但是这项研究仍然没有告诉我们以下问题,如果有兴趣的朋友可以深入研究: (1)微生物暴露(脏一点)在儿童出生6个月内暴露有效,还是6个月后暴露依然有效?因为6个月是体内大部分免疫建立的时期。 (2)这种暴露是不是真的诱导了免疫耐受?免疫耐受系统如Treg是否发生改变?发生了什么可塑性改变?在甲基化,还是乙酰化方面,还是基因表达方面发生改变? (3)目前所有文章指向微生物暴露,实际上,哮喘的过敏源包括真菌,动物毛发,花粉,螨虫等。那么出生后6个月内暴露在这些环境下,是否也有利? (4)能否进一步对比,同样是农村儿童,家庭经济条件,父母教育水平,以及出生后的照顾情况;以及同样是城市儿童,这些条件进行对比,观察哮喘发生率,可能更具有对比性。因为有人认为城市空气污染,农村空气干净,因此同条件对比,更具有说服力。 这些假

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    2014-12-03 yuanp1117

    儿童哮喘发生与多种因素有关,该研究在分析儿童微生物暴露与哮喘的关系时是否排除了其它因素的干扰

    0

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