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Updated: Jun 29, 2025

A Tuberculosis Molecular Bacterial Load Assay TB-MBLA
Published on: April 30, 2020
一个早期和可靠的指标,表明非结核菌在高结核负担环境中的非结核菌隔离
Qian Liang1, Xiaoyi Jiang1, Junnan Jia1
1National Clinical Laboratory on Tuberculosis, Beijing Key Laboratory for Drug Resistant Tuberculosis Research, Beijing Chest Hospital, Capital Medical University, Beijing Tuberculosis and Thoracic Tumor Institute, Beijing, China.
涂抹阳性/Xpert阴性结果可以很快表明非结核性真菌菌 (NTM) 感染. 这种快速查有助于早期诊断,在高负担环境中区分NTM与结核病.
科学领域:
- 医学诊断 医学诊断 医学诊断
- 传染性疾病 传染性疾病
- 微生物学 微生物学
背景情况:
- 非结核菌 (NTM) 肺部感染模仿结核病 (TB),造成诊断上的挑战.
- 延迟诊断或误诊的NTM感染是常见的.
- 需要一个可靠的NTM存在的早期指标.
研究的目的:
- 评估涂抹阳性/Xpert测试阴性结果作为NTM感染的早期指标.
- 评估这个指标在高TB负担环境中的实用性.
主要方法:
- 查阳性和Xpert检测阴性结果的回顾性和前性评估.
- 种植用于NTM识别的菌株.
- 为了准确性评估,包括干扰素-释放试验.
主要成果:
- 12.77%的涂抹阳性病例是Xpert检测负的.
- 95.45%的涂抹阳性/Xpert阴性病例与培养菌株显示NTM隔离.
- 添加干扰素马释放试验提高了对NTM查的准确性到100%.
- 涂抹阳性/Xpert阴性显示了涂抹阳性NTM病例的高精度 (93.75-96.55%) 和结核病例的高特异性 (~99.47%).
结论:
- 涂抹检测和Xpert检测提供了在首次医院访问时NTM存在的快速,临床指标.
- 涂抹阳性/Xpert阴性结果是NTM隔离的可靠早期指标.
- 这种查策略使大约四分之一的NTM隔离患者在高负担环境中受益.
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