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非结核菌肺病的分子流行病学监测:单中心前性队列研究
Kazuki Hashimoto1,2,3, Kiyoharu Fukushima1,2,3, Yuki Matsumoto2
1Department of Respiratory Medicine and Clinical Immunology, Osaka University Graduate School of Medicine, Suita, Osaka, Japan.
Microbiology spectrum
|August 21, 2025
概括
在非结核性细菌性肺病中,病原体转移发生在约四分之一的患者中. 一种新的测序方法准确地跟踪这些变化,帮助个性化患者护理和治疗调整.
科学领域:
- 微生物学
- 基因组学
- 传染性疾病
背景情况:
- 非结核菌性肺病 (NTMPD) 是一种慢性感染,致病原体可以在物种,亚种或菌株水平上演变.
- 追踪这些病原体的动态对于有效治疗至关重要, 但目前的方法效率低下.
- 现有的临床实践缺乏可靠的工具来监测NTMPD病原体的纵向变化.
研究的目的:
- 在NTMPD患者中研究菌根菌种/亚种和菌株水平动态.
- 开发和评估一种简单的基于序列的方法来确定菌株水平.
- 通过实时病原体监测创新NTMPD管理.
主要方法:
- 在112名NTMPD患者中进行前性队列研究.
- 在招生和随访时的唾液样本全基因组测序.
- 常规变量数并列重复 (VNTR) 类型和新型数字 VNTR (dVNTR) 方法的开发和评估.
主要成果:
- 在超过1.5年的患者中,发现了25.9%的病原体转移 (物种/亚物种或菌株水平).
- 核心基因组多部位测序确定了11. 6%的患者的物种/亚物种变化.
- 在14. 3%的患者中检测到VNTR和dVNTR类型变化;dVNTR结果与常规VNTR相关.
- 在没有可检测的病原体转移的患者中观察到抗菌感应的变化,耐药性更高.
结论:
- 病原体转移是NTMPD的一个重要因素,影响了抗菌素敏感性.
- 常规物种/亚物种识别和分子类型识别 (VNTR) 对于患者护理至关重要.
- 与dVNTR结合的核心基因组多部位测序类型化为监测NTMPD病原体动态和改善患者管理提供了一种创新方法.
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