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评估I-dOne系统用于快速细菌识别:一个诊断准确性研究

Felipe Francisco Tuon¹, Paula Hansen Suss¹, Gabriel Burato Orthis¹

¹Laboratory of Emerging Infectious Diseases, School of Medicine, Pontifícia Universidade Católica do Paraná, Curitiba, PR 80215-901, Brazil.

Diagnostic microbiology and infectious disease

|June 22, 2025

概括

I-dOne系统 (ATR-FTIR) 提供了一种快速且负担得起的细菌识别方法. 它对许多细菌具有很高的准确性,当它无法使用时,它可以作为MALDI-TOF MS的可行替代品.

科学领域:

临床微生物学临床微生物学
分析化学是一种分析化学.
频谱学是一种光谱学.

背景情况:

准确的细菌鉴定对于有效的患者治疗和感染控制至关重要.
飞行质谱的矩阵辅助激光脱吸/电离时间 (MALDI-TOF MS) 是广泛用于细菌识别的黄金标准.
需要采用其他快速且具有成本效益的方法,尤其是在资源有限的环境中.

研究的目的:

评估I-dOne®系统 (ATR-FTIR) 的细菌识别性能.
为了比较I-dOne®系统的准确性与MALDI-TOF MS.
评估I-dOne®系统作为诊断替代品的潜力.

主要方法:

对436个临床细菌分离物的分析.
使用了I-dOne®系统的减弱总反射度里埃转换红外光谱 (ATR-FTIR) 光谱.
与 MALDI-TOF MS 识别结果进行比较.

主要成果:

在I-dOne®和MALDI-TOF MS.之间实现了90.2%的整体一致性.
在识别菌和常见的阴性细菌方面具有很高的准确性.
对某些肠杆菌物种观察到较低的性能.

结论:

I-dOne®系统 (ATR-FTIR) 是一种有前途的细菌识别工具.
它为MALDI-TOF MS提供了一种快速,负担得起的替代方案,特别是在后者无法获得的地方.
对于特定的细菌群体,如Enterobacterales,可能需要进一步优化.

关键词:

在ATR-FTIR光谱学中使用.细菌的鉴定细菌的鉴定临床微生物学临床微生物学这就是I-dOne系统.马尔迪-托夫 (MALDI-TOF) 是一个国家元首.

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