在大脑小血管疾病中异质血脑屏障功能障碍
Yunqing Ying1, Yingying Li2, Tingyan Yao3
1Department of Neurology, National Center for Neurological Disorders, National Clinical Research Center for Aging and Medicine, Huashan Hospital, Fudan University, Shanghai, China.
概括
大脑小血管疾病 (cSVD) 亚型显示出独特的血脑屏障 (BBB) 变化. 测量BBB泄漏 (Ktrans) 和水交换 (kw) 显示了CADASIL,HTRA1相关的和零星的cSVD中不同的模式.
科学领域:
- 神经成像是一种神经成像.
- 脑血管疾病 脑血管疾病
- 血脑屏障研究 血脑屏障研究
背景情况:
- 大脑小血管疾病 (cSVD) 涵盖了一组影响大脑中小血管的疾病.
- 血脑屏障 (BBB) 的功能障碍是cSVD的关键病理特征,但其具体变化在亚型之间有所不同.
- 使用Ktrans和kw等动态对比增强MRI参数量化BBB完整性对于了解疾病机制至关重要.
研究的目的:
- 调查和比较血脑屏障 (BBB) 泄漏率 (Ktrans) 和水交换率 (kw) 在不同类型的脑小血管疾病 (cSVD) 中.
- 阐明BBB功能障碍在零星cSVD,CADASIL和HTRA1相关cSVD中的独特模式.
- 探索改变的BBB测量和cSVD亚型中的临床严重程度或损伤负担之间的关系.
主要方法:
- 动态对比增强型MRI对30名零星性cSVD,40名CADASIL,13名HTRA1相关的cSVD和40名健康对照人进行了测试.
- 使用加多酸泄漏率 (Ktrans) 和水交换率 (kw) 进行了BBB透性的定量分析.
- 进行临床,认知和MRI评估,包括病变负担,以进行相关性分析.
主要成果:
- 在多个大脑区域,CADASIL显示显著降低了kw,而Ktrans没有变化.
- 零星的cSVD在整个大脑和正常的白质中表现出显著更高的Ktrans,而kw没有变化.
- 与HTRA1相关的cSVD在多个大脑区域表现出更高的Ktrans和更低的kw. 改变的BBB测量与不同组的病变负担或临床严重程度相关.
结论:
- 显著的Ktrans和kw的改变是cSVD不同亚型的特征,突出显示异质的BBB功能障碍.
- 卡达西尔与减少的水交换,零星的cSVD与增加的BBB泄漏,和HTRA1相关的cSVD有关.
- 结合Ktrans和kw测量,可以更全面地了解cSVD亚型中异质BBB功能障碍.
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