代谢触发的等离子纳米传感器用于细菌检测和临床分离物的抗菌敏感性测试
Jing Zhang1, Mengna Wang1, Jinru Xiao1
1State Key Laboratory of Food Nutrition and Safety, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, China.
ACS sensors
|January 4, 2024
概括
一种新的等离子纳米传感器在不到3小时内检测出细菌对抗生素的敏感性. 这种快速,低成本的方法有助于打击抗菌素耐药性 (AMR),通过在护理点指导抗生素选择.
科学领域:
- 纳米技术纳米技术
- 生物医学工程 生物医学工程
- 微生物学 微生物学
背景情况:
- 抗菌素耐药性 (AMR) 构成了全球健康的重大威胁,需要快速诊断.
- 目前的抗生素敏感性测试 (AST) 方法通常是缓慢和复杂的,阻碍了及时的临床决策.
研究的目的:
- 开发一种简单,快速,准确的等离子纳米传感器,用于现场检测细菌和AST.
- 利用细菌的代谢活动来区分抗生素敏感和耐药菌株.
主要方法:
- 一个等离子纳米传感器是使用Cu2+和氨酸修饰黄金纳米粒子 (Au/Cys) 设计的.
- 传感器利用细菌对Cu2+的代谢消耗,从而产生不同的聚合模式.
- 细菌的代谢活动受到抗生素敏感性的影响,导致可观察到的颜色变化.
主要成果:
- Cu2+-Au/Cys纳米传感器在大约3小时内检测到细菌代谢活动和差异化抗生素敏感性.
- 通过肉眼观察,智能手机分析或吸收读数可以观察到颜色变化.
- 使用临床分离物和六种抗生素的验证表明临床敏感性和特异性为95.8%.
结论:
- 开发的等离子纳米传感器为护理点AST提供了一个简单,具有成本效益和快速的解决方案.
- 这项技术具有显著的潜力,可以帮助打击AMR,使得更快,更明智的抗生素治疗决策.
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