不连续性第三子显微镜用于无标签的成像和皮肤内神经纤维的量化
Pei-Jhe Wu1, Hsiao-Chieh Tseng1, Chi-Chao Chao2
1Department of Electrical Engineering and Graduate Institute of Photonics and Optoelectronics, National Taiwan University, Taipei 10617, Taiwan.
Cell reports methods
|March 19, 2024
概括
不连续性第三波 (THG) 显微镜 (dTHGM) 通过检测信号间隙来成像神经纤维,揭示非髓质神经末. 这种无标签的方法有助于诊断小纤维神经病变.
科学领域:
- 生物医学光学 生物医学光学
- 神经科学成像 图像学
- 显微镜技术 显微镜技术
背景情况:
- 无标签的神经纤维成像通常需要信号连续性,限制可视化自由的皮内神经末端 (FINES).
- 现有的方法很难准确地描绘表皮内非髓化神经纤维的复杂结构.
研究的目的:
- 引入一种新的无标签成像技术,即不连续性第三波 (THG) 显微镜 (dTHGM),用于可视化神经纤维,特别是FINEs.
- 通过比较性研究确定dTHGM的疗效,并开发诊断小纤维神经病变的临床指数.
主要方法:
- 开发了dTHGM,它利用THG信号中的不连续性进行对比,使FINE的成像成为可能.
- 应用dTHGM来揭示非髓化FINE的珠串形态.
- 对PGP9.5免疫组织化学和节省的神经损伤模型的验证dTHGM.
- 使用不连续点连接算法创建了一个皮层内神经纤维 (IENF) 索引.
主要成果:
- dTHGM成功地以无标签的方式可视化了非髓化FINE的珠串特征.
- 该方法与传统的皮肤活检IENF密度测量有很高的相关性 (R=0.98).
- 在糖尿病患者中,dTHGM衍生的IENF指数在区分小纤维神经病变方面表现出显著的能力 (p=0.0102).
结论:
- dTHGM提供了一种新的,无标签的神经纤维成像方法,克服了现有方法的局限性.
- 开发的IENF指数显示了小纤维神经病变的临床诊断的前景,特别是在糖尿病外围神经病变中.
- 这种技术推进了神经成像,并为表皮内的定量评估提供了一个工具.
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