结核菌 (Mycobacterium tuberculosis) 咳气溶培养状态与宿主特征和炎症概况相关
Videlis Nduba1, Lilian N Njagi1, Wilfred Murithi1
1Centre for Respiratory Diseases Research, Kenya Medical Research Institute, Nairobi, Kenya.
Nature communications
|August 31, 2024
概括
识别传染性结核病 (TB) 是控制的关键. 高度传染性结核病患者表现出明显的炎症标志物和基因表达特征,有助于确定传播风险.
科学领域:
- 传染性疾病 传染性疾病
- 免疫学 免疫学 免疫学
- 基因组学就是基因组学.
背景情况:
- 阻止结核病 (TB) 传播对于有效控制疾病至关重要.
- 与传统标记物相比,咳产生的气溶培养物是结核病传播的优越预测因素.
- 识别具有高传染性潜力的个体对于有针对性的干预措施至关重要.
研究的目的:
- 调查临床,微生物学和免疫学特征与Mycobacterium tuberculosis空气溶解之间的关联.
- 为了确定宿主炎症标志物和转录特征是否区分高度传染的个体与不那么传染的个体.
- 探索咳气溶培养在识别高结核病传播潜力的个体中的实用性.
主要方法:
- 这是一项前性纵向研究,涉及肯尼亚142名未接受过治疗的肺结核病患者.
- 使用咳气溶采样系统来评估Mycobacterium结核病的气溶.
- 分析了临床数据,微生物标记物,宿主免疫反应 (干扰素-释放试验 - IGRA),炎症标记物 (C-反应蛋白,TNF) 和全血转录特征.
主要成果:
- 气溶培养阳性参与者的接触者具有较高的IGRA阳性率和高的干扰素玛 (IFNγ) 水平.
- 阳性咳气溶培养与较高的细菌负担,年龄较小,手臂周长较大,C反应蛋白升高和TNF水平较低有关.
- 治疗前全血转录特征独立与气溶培养状态相关,不论细菌负载如何.
结论:
- 结核病的传染性与特定的流行病学因素和宿主炎症特征有关.
- 主体炎症特征和转录特征可以作为生物标志物来识别高度传染的个体.
- 这些发现可以通过识别高风险传播者来为针对性结核病控制策略提供信息.
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