在Mycobacterium tuberculosis的量化中,在低细菌负载下和具有差异可检测的mycobacteria时,差异很大
Kathleen F Walsh1,2, Myung Hee Lee1, Kayvan Zainabadi1
1Center for Global Health, Weill Cornell Medicine, New York, New York, USA.
Antimicrobial agents and chemotherapy
|June 3, 2024
概括
使用时间到阳性 (TTP) 来量化Mycobacterium结核病 (MTB) 在可检测差异可检测MTB (DD Mtb) 的参与者中显示出更多的可变性. 这一发现影响了依靠TTP测量的早期杀菌活性研究的设计.
科学领域:
- 微生物学 微生物学
- 传染性疾病 传染性疾病
- 临床研究 临床研究
背景情况:
- 准确量化Mycobacterium结核病对结核病研究至关重要.
- 时间到阳性 (TTP) 是一种常用于M.结核病量化的方法.
- 可差分检测的M.结核病 (DD Mtb) 可能会影响量化准确性.
研究的目的:
- 为了评估三种M.结核病量化方法之间的相关性:TTP,log10 CFU和DD Mtb检测.
- 评估DD Mtb存在对TTP和CFU之间的相关性的影响.
- 为早期杀菌活性 (EBA) 研究的设计提供信息.
主要方法:
- 分析了来自三个前性研究的数据.
- 使用TTP,log10 CFU和DD Mtb试验量化M.结核病的比较.
- 在具有和没有DD Mtb.的参与者中,对CFU/TTP相关性的统计分析.
主要成果:
- 与没有DD Mtb的参与者相比,DD Mtb的参与者在CFU/TTP相关性中表现出明显更大的变化 (P < 0.001).
- 存在DD Mtb引入了可变性,这可能会影响TTP作为主要结果衡量的可靠性.
结论:
- 存在DD Mtb显著影响TTP和CFU测量之间的相关性.
- 由于DD Mtb带来的变化,早期杀菌活性研究的设计和解释可能需要调整.
- 需要进行进一步的研究,以优化M.结核病量化方法,以适应不同患者群体.
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