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患有牛奶,蛋和花生过敏的儿童的特定年龄的微生物组
Punita Ponda1, Jane E Cerise2, Brianne Navetta-Modrov3
1Northwell, New Hyde Park, New York; Division of Allergy and Immunology, Cohen Children's Medical Center, New Hyde Park, New York.
概括
肠道微生物组失调与食物过敏有关,特别是在有花生过敏的老年儿童中. 肠道细菌的差异在年幼的儿童中不那么明显,这表明年龄对于干预至关重要.
科学领域:
- 微生物组研究的研究.
- 免疫学 免疫学 免疫学
- 儿科过敏症儿童过敏症
背景情况:
- 肠道微生物群在免疫调节中发挥作用,可能会在食物过敏发展之前出现.
- 之前的研究还没有充分比较不同年龄组和临床表型的微生物组.
研究的目的:
- 将食物过敏儿童的肠道微生物组组成 (按年龄分类:<3岁和3-18岁) 与年龄相匹配的健康对照进行比较.
- 在不同儿科年龄组中识别与食物过敏相关的特定微生物差异.
主要方法:
- 一项前性,横截面研究,涉及70名儿童 (56名食物过敏患者,14名对照者) 在2014-2019年间招募.
- 使用16S核糖体RNA测序来分析便中的微生物DNA.
- 在食物过敏和对照组之间比较了α和β多样性,按年龄分层,并进行了差异丰度分析.
主要成果:
- 虽然食物过敏的年轻儿童表现出与对照组相似的α多样性,但β多样性因年龄而异 (P = .001).
- 在患有食物过敏的幼儿中观察到特定类型的不同丰富性,包括Clostridia.
- 患有食物过敏的年龄较大的儿童,尤其是对花生过敏的儿童,在先验和非先验分类中表现出显著的差异.
结论:
- 肠道功能障碍与食物过敏有关,在较年长的花生过敏儿童中观察到的差异最为明显.
- 在有食物过敏和没有食物过敏的年幼儿童之间发现的肠道微生物群差异较少.
- 这些发现表明,年龄,特别是3岁以下的年龄,是考虑治疗干预措施的关键因素,例如对食物过敏的口服免疫疗法.
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