第三代测序技术与传统微生物检测在下呼吸道感染病原体诊断中的比较
Wang Luo1, Yanbin He2,3, Jianhui Xu1
1Department of Respiratory Medicine, The Zengcheng Branch of Nanfang Hospital, Southern Medical University, 511300 Guangzhou, Guangdong, China.
Discovery medicine
|June 5, 2023
概括
第三代测序显著提高了在下呼吸道感染 (LRTI) 中的病原体检测率. 这种纳米孔测序方法提供了更快的结果,并指导了临床治疗,显示了诊断复杂感染的前景.
科学领域:
- 微生物学 微生物学
- 基因组学就是基因组学.
- 传染性疾病 传染性疾病
背景情况:
- 下呼吸道感染 (LRTI) 经常带来诊断挑战,特别是复杂或罕见的病原体.
- 传统的检测方法可以产生较低的检测率和较长的周转时间.
研究的目的:
- 评估第三代测序技术在诊断LRTI中的应用价值和未来潜力.
- 评估纳米孔元基因组测序在支气管支气管洗液 (BALF) 中病原体识别的性能.
主要方法:
- 追溯分析了70名LRTI患者的BALF样本.
- 纳米孔元基因组测序与传统培养,定量PCR (qPCR),唾液培养,TB-DNA和Xpert MTB/RIF的比较.
- 对包括Mycobacterium tuberculosis在内的各种病原体的敏感性,特异性和检测效率的评估.
主要成果:
- 纳米孔测序在84.29%的BALF样本中确定了病原体,而传统培养则为25.71%.
- 细菌,真菌和病毒分别占确定的病原体的50%,17%和32%.
- 纳米孔测序显示,对病原体检测具有70%的灵敏度和91.7%的特异性,对M.结核病检测的阳性率为33.3%.
结论:
- 纳米孔测序显著提高了LRTI中的病原体检测,特别是对于M.结核病,真菌和病毒.
- 该技术将报告时间从三天缩短到六小时,提高了诊断效率.
- 纳米孔测序显示了LRTI病原体诊断的有希望的临床应用前景.
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