单细胞散射和基于自光的快速抗生素敏感性测试,用于检测грам阴性和грам阳性细菌
Sophie Dixneuf1, Anne-Coline Chareire-Kleiberg2, Pierre Mahé3
1BIOASTER Technology Research Institute, Lyon, France.
Frontiers in microbiology
|August 21, 2023
概括
这项研究引入了一种快速,无标签的方法,用于使用流细胞计测试进行抗微生物敏感性测试 (AST). 它通过分析光散射和自发光,在不到2小时内准确确定细菌对抗生素的敏感性.
科学领域:
- 微生物学 微生物学
- 生物物理学的生物物理.
- 分析化学 分析化学
背景情况:
- 抗生素敏感性测试 (AST) 对于指导抗生素治疗至关重要.
- 目前的AST方法可能耗时,延迟有效的患者护理.
- 无标签技术为更快,更有效的诊断提供了潜力.
研究的目的:
- 开发一种快速 (<2小时),无标签的表型抗微生物敏感性测试 (AST) 方法.
- 评估单个细菌细胞光散射和自发光对AST的有用性.
- 区分易感和耐药的细菌表型.
主要方法:
- 使用无标签流细胞计量来监测细菌自光 (FAD,NADH) 和光散射.
- 单个细菌细胞 (大肠杆菌,葡萄球菌) 被用抗生素 (氨基糖化物,β-乳酸盐) 化.
- 尺寸缩小技术 (PCA,一类SVM) 用于数据分析和表型预测.
主要成果:
- 无标签流细胞计方法证明了AST在2小时内实现的可行性.
- 与单独的散射相比,单细胞自发光为表型形成提供了附加值.
- 这种方法特别有效地识别了用西林治疗的耐药葡萄球菌株 (mecA+).
结论:
- 无标签流细胞计是快速表型AST的可行方法.
- 结合光散射和自动光,提高了细菌易感性测定的准确性.
- 这种技术具有显著的潜力,可以改善抗生素管理和患者的治疗结果.
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