中国神经再生研究(英文版) ›› 2025, Vol. 20 ›› Issue (7): 2029-2037.doi: 10.4103/NRR.NRR-D-23-01617

• 原著:脑损伤修复保护与再生 • 上一篇    下一篇

可量化局灶性脑卒中模型和评估脑卒中治疗和预防效果的方法:光学分辨光声显微镜光栓塞方法

  

  • 出版日期:2025-07-15 发布日期:2024-11-27

A promising approach for quantifying focal stroke modeling and assessing stroke progression: optical resolution photoacoustic microscopy photothrombosis

Xiao Liang1, 2, 3, Xingping Quan4 , Xiaorui Geng1, 2, Yujing Huang1, 2, Yonghua Zhao4 , Lei Xi3 , Zhen Yuan1, 2, *, Ping Wang5, *, Bin Liu5, *   

  1. 1 Faculty of Health Sciences, University of Macau, Macao Special Administrative Region, China;  2 Center for Cognitive and Brain Sciences, University of Macau, Macao Special Administrative Region, China;  3 Department of Biomedical Engineering, Southern University of Science and Technology, Shenzhen, Guangdong Province, China;  4 State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Taipa, Macao Special Administrative Region, China;  5 Department of Emergency, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong Province, China
  • Online:2025-07-15 Published:2024-11-27
  • Contact: Zhen Yuan, PhD, zhenyuan@um.edu.mo; Ping Wang, pingwang@jnu.edu.cn; Bin Liu, PhD, nysylb@163.com.
  • Supported by:
    This work was supported by University of Macau, China, Nos. MYRG2022-00054-FHS and MYRG-GRG2023-00038-FHS-UMDF (to ZY); the Macao Science and Technology Development Fund, China, Nos. FDCT0048/2021/AGJ and FDCT0020/2019/AMJ and FDCT 0011/2018/A1 (to ZY); and Natural Science Foundation of Guangdong Province of China, No. EF017/FHS-YZ/2021/GDSTC (to ZY).

摘要:

为了研究缺血性脑卒中的发病和进展机制,有研究者提出可以同时监测和建立动物大脑皮质栓子的方法;然而,这些方法往往需要复杂的系统,而且年龄对脑栓塞的影响尚未得到充分研究,尽管缺血性脑卒中与年龄密切相关。实验提出了一种基于光学分辨光声显微镜(OR-PAM)的可视化光栓形成方法,利用 532 nm脉冲激光同时进行建立缺血性脑卒中小鼠模型并进行血管监测。实验展示了该技术在不同年龄小鼠病灶脑卒中建模过程中描绘血管变化的能力。此外,实验还结合光学相干断层扫描血管造影研究了脑卒中前后小鼠大脑的结构和灌注变化,成功揭示了脑血管栓塞随年龄的变化。实验的成像数据和定量分析强调了不同年龄的小鼠脑血管栓塞对脑卒中的不同反应。这些结果表明,所提出的光学分辨光声显微镜光栓塞方法是一种可用于量化局灶性脑卒中模型、研究脑卒中的生理机制以及评估脑卒中治疗和预防效果的非常有前途策略。

https://orcid.org/0000-0003-3061-6263 (Zhen Yuan); https://orcid.org/0009-0009-4113-2863 (Ping Wang); 

https://orcid.org/0000-0003-1691-8126 (Bin Liu)

Abstract: To investigate the mechanisms underlying the onset and progression of ischemic stroke, some methods have been proposed that can simultaneously monitor and create embolisms in the animal cerebral cortex. However, these methods often require complex systems and the effect of age on cerebral embolism has not been adequately studied, although ischemic stroke is strongly age-related. In this study, we propose an optical-resolution photoacoustic microscopy-based visualized photothrombosis methodology to create and monitor ischemic stroke in mice simultaneously using a 532 nm pulsed laser. We observed the molding process in mice of different ages and presented agedependent vascular embolism differentiation. Moreover, we integrated optical coherence tomography angiography to investigate ageassociated trends in cerebrovascular variability following a stroke. Our imaging data and quantitative analyses underscore the differential cerebrovascular responses to stroke in mice of different ages, thereby highlighting the technique’s potential for evaluating cerebrovascular health and unraveling age-related mechanisms involved in ischemic strokes.

Key words: age-dependent, cerebral cortex,  ischemic stroke,  mouse model,  optical coherence tomography angiography,  photoacoustic 
microscopy,
 photothrombosis,  vascular imaging