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使用纸张传感器检测尿路感染中的β-乳酸酶产生细菌的无培养检测
Guangming Liu1, Wenshuai Li2, Siya Li2
1Department of Urology, Tianjin First Center Hospital, Nankai University, Tianjin 300071, China.
Biosensors & bioelectronics
|April 24, 2024
概括
一个新的纸张传感器可以快速检测尿液中的抗生素耐药细菌,这对于治疗尿路感染至关重要. 这种简单的现场测试提供了高准确度,不需要细菌培养,特别有利于资源有限的环境.
科学领域:
- 生物医学工程 生物医学工程
- 临床微生物学 临床微生物学
- 分析化学 分析化学
背景情况:
- 细菌的抗生素耐药性对公众健康构成重大威胁,特别是在治疗尿路感染 (UTI) 方面.
- 快速准确地检测耐药机制,如β-乳糖酶,对于有效的尿路感染治疗至关重要.
- 目前的诊断方法通常依赖于细菌培养,这耗时且不适合快速现场测试.
研究的目的:
- 开发一种简单,便宜,快速,灵敏和特定的基于纸张的传感器,用于在尿路感染患者的尿样中快速检测β-乳糖酶产生细菌.
- 创建针对关键抗生素耐药性酶的视觉探针:扩展光谱/AmpC β-乳酸酶 (ESBL/AmpC) 和卡巴酶.
- 评估纸张传感器的临床性能,以便在现场进行尿路感染诊断.
主要方法:
- 结合一个强烈的电子阴性组 (-N+(CH3)3) 与和卡巴胺抗生素结构,以创建特定的视觉探针.
- 将开发的探头集成到便携式纸张传感器格式中,用于视觉检测.
- 测试纸张传感器与30个临床尿样从尿路感染患者检测ESBL/AmpC和carbapenemase产生细菌.
主要成果:
- 在30个临床尿样中,纸张传感器成功识别了10例ESBL/AmpC阳性和8例卡巴酶阳性病例.
- 该传感器在检测这些关键抗生素耐药性机制方面表现出100%的临床灵敏度和特异性.
- 开发的探针有效地准并视觉显示特定β-乳酸酶的存在.
结论:
- 拟议的纸质传感器提供了一种快速,简单和准确的方法,用于在尿路感染患者中现场检测产生β-乳酸酶的细菌.
- 这项技术为诊断抗生素耐药性提供了有价值的解决方案,特别是在资源有限的环境中,没有先进的实验室设施.
- 传感器消除了对细菌培养的需求,显著减少了诊断时间,并使尿路感染的治疗决策更快.
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