实时,无标签检测和识别细菌通过非侵入性的光学成像
Farah Qazi1, Rajni Verma1, Connagh E Redmond2
1School of Physics, University of Melbourne, Parkville, Victoria, 3010, Australia.
Microbes and infection
|November 28, 2023
概括
聚焦显微镜通过内在光实时识别细菌,为传统方法提供了快速的替代方案. 这种技术可以在没有标签的情况下快速识别和跟踪细菌,有助于及时治疗患者.
科学领域:
- 微生物学 微生物学
- 生物光子学 生物光子学
- 频谱学是一种光谱学.
背景情况:
- 传统的细菌鉴定方法耗时,需要大量的样本准备和测试.
- 在临床环境中,对细菌感染的快速实时诊断工具的需求非常大.
研究的目的:
- 评估共聚焦显微镜作为一种快速的,非标记的实时细菌识别方法.
- 评估内在光特性对于区分细菌物种和菌株的有用性.
主要方法:
- 利用共聚焦显微镜分析细菌的内在光发射光谱和光寿命.
- 研究了无标签细菌追踪的光稳定性和时间痕迹.
- 进行了稀释实验,以确定关键细菌物种的检测极限.
主要成果:
- 内在的光光谱和寿命有效地作为独特的指纹用于实时识别12种细菌物种和多药耐药 (MDR) 菌株.
- 由于细菌的光稳定性,可以在没有标记的情况下跟踪和记录细菌.
- 检测和识别黄金葡萄球菌,Klebsiella肺炎和大肠杆菌在低至2 x 10^2 CFU/mL的度下实现.
结论:
- 通过共聚焦显微镜进行内在光分析为快速细菌识别提供了有希望的非侵入性,无标签的方法.
- 这种光学方法可以成为开发生物样本中快速检测细菌的设备的基础.
- 该技术为临床医生提供快速信息,以便及时和有针对性的患者治疗决策.
更多相关视频
09:24Optical Screening of Novel Bacteria-specific Probes on Ex Vivo Human Lung Tissue by Confocal Laser Endomicroscopy
Published on: November 29, 2017
7.6K
04:07Author Spotlight: Integrated OPTIR-FISH for Single-Cell Metabolic and Identity Analysis in Complex Environments
Published on: February 23, 2024
1.3K
相关概念视频
03:31Labeling DNA Probes
DNA probes are fragments of DNA labeled with a reporter tag to enable their detection or purification. The resulting labeled DNA probes can then hybridize to target nucleic acid sequences through complementary base-pairing, and may be used to recover or identify these regions.
Radioisotopes, fluorophores, or small molecule binding partners like biotin or digoxigenin, are the most widely used reporter tags for labeling DNA probes. These labels can be attached to the probe DNA molecule via...
Radioisotopes, fluorophores, or small molecule binding partners like biotin or digoxigenin, are the most widely used reporter tags for labeling DNA probes. These labels can be attached to the probe DNA molecule via...
01:25Rapid Identification of Pathogens
MALDI-TOF MS has transformed clinical microbiology by offering a rapid and reliable method for pathogen identification. The traditional approach to microbial identification typically involves time-consuming culture techniques and biochemical tests, which can delay the initiation of appropriate antimicrobial therapy. MALDI-TOF MS avoids these delays by using characteristic ribosomal protein mass patterns of microbial cells, enabling accurate species-level identification within minutes.Principle...