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沉积场-流量分离:用于快速抗菌感应性测试的诊断工具

Audrey Gauthier^1,2, Linda Tlili¹, Serge Battu²

¹University of Limoges, Inserm, CHU Limoges, RESINFIT, UMR 1092, 87000 Limoges, France.

Analytical chemistry

|November 8, 2023

概括

沉积场流分化 (SdFFF) 提供快速抗生素敏感性测试 (AST),在3-4小时内提供结果. 这种方法可以准确地区分敏感和耐药的细菌菌株,使得更快的向抗生素治疗成为可能.

科学领域:

微生物学微生物学
分析化学分析化学
生物技术是生物技术.

背景情况:

传统的抗微生物敏感性测试 (AST) 方法需要大量的时间 (24-48小时).
这种延迟需要概率抗生素治疗,增加抗生素耐药性的风险.
快速的AST方法对于及时有效的治疗至关重要.

研究的目的:

调查沉积场流分化 (SdFFF) 作为细菌抗生素敏感性测试的快速方法.
评估SdFFF检测细菌中抗生素诱导的形态变化的能力.
为区分易感和耐药细菌菌株建立量化衡量标准.

主要方法:

在"超层"化模式中利用SdFFF进行细菌分析.
测试了三种细菌物种:大肠杆菌,肺炎克莱布塞拉和空气真菌.
使用保留因子 (PΔR) 的百分比变化量化了抗生素效应,并确定了16.8%的值.

主要成果:

SdFFF成功监测了细菌中抗生素诱导的形态变化.
16.8%的PΔR值有效地区分了敏感和耐药菌株.
SdFFF与传统的AST参考方法达成100%的绝对一致.
结果在3-4小时内得到,比传统方法 (16-24小时) 快得多.

结论:

作为一种快速的AST方法,SdFFF显示出显著的潜力.
该技术可以更快地确定抗生素敏感性或耐药性.
较早的向抗生素治疗可以通过这种快速方法来促进.
临床应用需要进一步验证.

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