洞察鼻腔细菌组成与早期呼吸道疾病的易感性之间的关系:试点观察研究
Jose A Caparrós-Martín1,2,3, Elizabeth Kicic-Starcevich3, Patricia Agudelo-Romero3,4,5
1UWA Medical School, UWA Centre for Child Health Research, The University of Western Australia, Perth, Western Australia, Australia.
medRxiv : the preprint server for health sciences
|September 2, 2025
概括
鼻子微生物群可能会以特定性别的方式影响婴儿的喘息. 这项试点研究探讨了幼儿鼻腔微生物群落及其与婴儿呼吸道疾病的联系.
科学领域:
- 微生物学
- 儿童呼吸系统医学
- 免疫学
背景情况:
- 早期的病毒性呼吸道感染与长期的儿童呼吸道问题有关.
- 目前尚缺少婴儿呼吸道感染易感性的预测工具.
- 内生微生物群是预防呼吸道感染的潜在目标,因为它在病原体毒性和呼吸道炎症中的作用.
研究的目的:
- 研究不同鼻腔微生物群落与婴儿病毒性呼吸道疾病之间的关联.
- 在生命的第一年探索鼻腔微生物群和呼吸系统表型之间的关系.
主要方法:
- 在AERIAL研究中分析了55名婴儿的90个鼻 (背景和症状样本).
- 使用全长16S rRNA测序进行细菌分析.
- 通过泛细菌TaqMan®试验量化细菌负载.
主要成果:
- 鼻腔细菌多样性在背景和症状抽样之间是相似的;组成因人而异.
- 症状抽样显示多样性减少,但细菌负载没有变化.
- 鉴定出两种不同的细菌内型 (富含摩拉塞拉或链球菌),它们的α多样性不同.
- 在鼻病毒阳性抽样中观察到病毒-细菌相互作用,但在SARS-CoV-2阳性抽样中没有.
- 在背景微生物内型和症状发作或支气管炎之间没有发现关联.
- 观察到内型与喘息发作之间存在潜在的性别相关性.
结论:
- 试验数据表明鼻腔微生物群可能会以性别特定的方式影响喘息结果.
- 需要进行更大规模的纵向研究来证实这些发现,并探索鼻腔微生物群对婴儿呼吸系统健康的作用.
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