光学连贯性断层扫描用于无标签检测和表征甲素耐药性S. 黄金色的生物片
Natalia Demidova1,2, Jason R Gunn1, Ida Leah Gitajn1,3
1Dartmouth Health, Department of Orthopaedics, Lebanon, New Hampshire, United States.
Journal of biomedical optics
|April 2, 2025
概括
一种新的光学连贯性断层扫描 (OCT) 方法可以检测骨科植入物上的甲素耐药黄金葡萄球菌 (MRSA) 生物膜. 这种非侵入性技术量化了生物膜厚度,粗度和毛孔结构,有助于手术检测感染.
科学领域:
- 生物医学工程 生物医学工程
- 医疗成像医学成像
- 传染性疾病 传染性疾病
背景情况:
- 骨科植入物相关的感染是由抗生素耐药性细菌生物膜驱动的严重并发症.
- 目前的内科手术方法缺乏检测或区分受感染组织的能力,导致治疗的挑战.
- 在手术过程中对实时生物膜检测有着至关重要的未满足的需求.
研究的目的:
- 开发基于光学连贯断层扫描 (OCT) 的成像方法,用于在现场检测和量化耐甲基黄金葡萄球菌 (MRSA) 生物膜.
- 为了解决临床需要在骨科植入物上细菌污染的手术内识别.
- 建立一种无标签的方法来可视化和量化骨科生物膜.
主要方法:
- 利用基于OCT图像的基于直方图的多参数纹理分析来识别MRSA生物膜的独特光学特征.
- 支持通过生物发光成像和扫描电子显微镜验证的OCT发现.
- 开发并测试了用于MRSA殖民地划分,金属硬件检测和生物膜量化的OCT方法.
主要成果:
- 通过OCT纹理分析成功识别了MRSA生物膜的独特光学特征.
- 证明了检测和量化MRSA和大肠杆菌生物膜的能力,包括混合物种.
- 量化生物膜厚度,粗度和复杂的孔隙结构在现场具有高度细节.
- 验证了对金属硬件的检测,这对于临床翻译至关重要.
结论:
- 开发的OCT方法可以快速,非侵入性地检测和量化金属表面上的MRSA生物膜.
- 这种技术可以划分复杂的生物膜孔网,提供对生物膜成熟度和治疗反应的见解.
- 在临床前模型中开辟了无标签MRSA检测的新途径,并为创伤手术的临床翻译提供了便利.
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