PLoS One:慢性肺疾病患儿上下气道微生物群的比较

2018-08-12 MedSci MedSci原创

下呼吸道微生物群在正常免疫发育和慢性肺病(CLD)中发挥重要作用。幼儿不能咳痰,且由于上呼吸道样本是否反映下呼吸道微生物群的不确定性,迄今为止几乎没有纵向儿科研究。本研究旨在评估咽拭子(TS)和咳嗽拭子(CS)是否能代表下呼吸道微生物群。前瞻性收集49例接受纤维支气管镜检查的儿童进行TS,CS,支气管肺泡灌洗和支气管刷。提取细菌DNA,使用Illumina MiSeq对16S rRNA基因V4区域

下呼吸道微生物群在正常免疫发育和慢性肺病(CLD)中发挥重要作用。幼儿不能咳痰,且由于上呼吸道样本是否反映下呼吸道微生物群的不确定性,迄今为止几乎没有纵向儿科研究。本研究旨在评估咽拭子(TS)和咳嗽拭子(CS)是否能代表下呼吸道微生物群。

前瞻性收集49例接受纤维支气管镜检查的儿童进行TS,CS,支气管肺泡灌洗和支气管刷。提取细菌DNA,使用Illumina MiSeq对16S rRNA基因V4区域进行测序。

结果,从168个样本(47个TS,37个CS,42个BALF和42个支气管刷)获得597万个高质量读数。CS测序不佳。在社区层面,下呼吸道样本与TS之间的α多样性(丰富度,均匀度或Shannon多样性指数)无差异(P> 0.05)。与TS的采样方法相关的β多样性变异小于6.31%(P = 0.001)。病理学和个体患者之间的差异比TS和下气道样本之间的差异更大(20%,54%,P≤0.001)。样本间相对丰度存在很强的相关性(r = 0.78,P <0.001)。对于其中一种样品类型由单一生物占优势的个体,观察到上气道样品和下气道样品之间的相似性较小。

综上所述,该研究结果表明,在社区结构层面,TS与较低气道样本相关并区分不同的CLD。 TS可能是研究不同CLD之间呼吸微生物群纵向变化差异的有用样本。然而,差异太大,无法将TS用于临床决策。

原始出处:


Ahmed B, Cox MJ, et al., Comparison of the upper and lower airway microbiota in children with chronic lung diseases. PLoS One. 2018 Aug 2;13(8):e0201156. doi: 10.1371/journal.pone.0201156. eCollection 2018.

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    2018-08-12 清风拂面

    谢谢分享学习

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