婴儿病原体检测中的元基因组下一代测序的道选择:一个多中心的横截面研究
Chengcheng Yang1, Minxu Li2, Shumei Yang1
1Department of Neonatology, Nanfang Hospital, Southern Medical University, Guangzhou, China.
Frontiers in pediatrics
|December 8, 2025
概括
下一代元基因组测序 (mNGS) 提供了改进的传染病诊断. 根据样品类型选择正确的mNGS通道 (DNA,RNA或组合),例如支气管支气管洗液或唾液,可以优化病原体检测率.
科学领域:
- 医学诊断 医学诊断 医学诊断
- 基因组学就是基因组学.
- 传染性疾病 传染性疾病
背景情况:
- 新生儿传染病带来了显著的发病风险.
- 目前的诊断方法,如血液培养,是缓慢的,缺乏灵敏度.
- 生物标志物如C反应蛋白 (CRP) 和前素有助于初步评估.
研究的目的:
- 为了比较不同元基因组下一代测序 (mNGS) 测试通道的诊断性能.
- 评估mNGS通道在各种临床样本类型 (周围血液,唾液,支气管支气管洗液) 的疗效.
- 确定最佳的mNGS策略,以改善传染病诊断.
主要方法:
- 894个临床样本的回顾性分析.
- 使用仅使用DNA,仅使用RNA和组合DNA+RNA通道的mNGS检测率的比较.
- 结果按样本类型分层:周围血液,唾液和支气管支气管洗液.
主要成果:
- 整体mNGS阳性率为51.9%,而道之间没有显著差异 (仅DNA为50.8%,仅RNA为55.7%,组合为49.6%).
- 支气管膜洗液呈现出最高的阳性 (84.57%),在双通道测试中增加到97.33%.
- 只有DNA的外周血液阳性是最高的 (45.34%),而吐显示双通道检测 (82.35%) 的检测有所改善.
结论:
- 对于最佳的诊断准确性,mNGS通道的选择应根据具体的样本类型进行量身定制.
- 双通道mNGS对呼吸道样本,如支气管支气管洗液和液非常有效.
- 只有DNA的mNGS可能更适合外围血液样本,以最大限度地检测病原体.
相关概念视频
Modern Molecular Taxonomy
865
Advancements in molecular biology have revolutionized the identification and characterization of bacteria, with multiple methods leveraging DNA sequencing for enhanced precision. As sequencing technologies improve and costs decline, these approaches are increasingly used in clinical, environmental, and evolutionary studies.Multilocus Sequence Typing (MLST) examines several housekeeping genes, essential chromosomal genes encoding cellular functions, to distinguish strains. Approximately...
865
Investigation of Disease Outbreaks
77
Multistate foodborne outbreaks pose significant public health risks and require meticulous investigation to identify sources and implement control measures. The Centers for Disease Control and Prevention (CDC) utilizes a dynamic seven-step process for these investigations, integrating data from laboratories, interviews, and environmental assessments to protect public health.Outbreak Detection: The detection of multistate outbreaks typically begins with PulseNet, the CDC's national laboratory...
77


