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在临床样本中使用多重LAMP和曲线分析快速检测碳烯耐药基因

Vaishnavi V Naik¹, Sumit Kumar¹, Tejal Thrimurthy¹

¹Faculty of Life and Allied Health Sciences, MS Ramaiah University of Applied Sciences, Bangaluru, India.

Journal of infection in developing countries

|March 6, 2026

概括

循环介导异热放大 (LAMP) 提供了一种灵敏而实用的方法,可以在临床样本中快速检测碳烯耐药基因. 这种方法有助于及时诊断和管理多药耐药细菌感染.

科学领域:

分子诊断学分子诊断学
抗微生物耐药性抗微生物耐药性
临床微生物学临床微生物学

背景情况:

耐卡巴胺的肠道细菌 (CRE) 构成了严重的公共卫生威胁,需要快速诊断以进行有效的治疗和感染控制.
及时识别碳烯抗性基因对于管理CRE感染和防止其传播至关重要.

研究的目的:

评估循环介导同热放大 (LAMP) 结合在实时聚合酶链反应 (RT-PCR) 中融化曲线分析的疗效.
在临床标本中识别特定的卡巴胺抗性基因,即新德里金属β-乳糖酶 (NDM) 和氧林酶 (OXA).

主要方法:

实时聚合酶连锁反应 (RT-PCR) 与融化曲线分析相结合.
循环介导同热放大 (LAMP) 试验.
检测NDM和OXA碳烯耐药基因.

主要成果:

与RT-PCR (91.6%) 和常规多重PCR相比,LAMP表现出更高的灵敏度 (96.7%),用于检测碳烯抗性基因.
对于K. pneumoniae和E. coli,LAMP的检测极限低至10^2 CFU/mL,这表明它能够检测到很少的细菌量.
虽然LAMP的特异性为88.7%,但其整体有效性和实用性使其成为一个有前途的快速诊断工具.

结论:

结合RT-PCR,化曲线分析和LAMP,提供了一种快速而精确的方法,用于在临床环境中识别碳烯抗性基因.
这种诊断方法可以通过更快的诊断和治疗启动来显著改善对多药耐药细菌感染的管理.

关键词:

一个灯的灯光.没有NDM,没有NDM.一个OXA的OXA.碳烯的耐药性碳烯的耐药性融化曲线分析分析在实时PCR中进行实时PCR.

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