在拉斯穆森脑炎中,全球变化的微结构性质和网络拓学
Nina R Held1, Tobias Bauer1, Johannes T Reiter1
1Department of Epileptology, University Hospital Bonn, 53127 Bonn, Germany.
Brain communications
|November 13, 2023
概括
拉斯穆森脑炎影响整个大脑的白质完整性,而不仅仅是受影响的半球. 这种神经炎症性疾病涉及退行性和补偿性网络变化.
科学领域:
- 神经科学是一个神经科学.
- 神经辐射学神经辐射学
- 神经免疫学 神经免疫学
背景情况:
- 拉斯穆森脑炎是一种免疫介导的大脑疾病,导致渐进的单边大脑缩,神经炎症,和认知衰退.
- 反侧半球参与,体积变化和型活动证明,表明影响比最初理解的更广泛.
研究的目的:
- 在拉斯穆森脑炎中研究白质完整性,结构网络拓和网络效率,使用扩散张力成像.
- 探索拉斯穆森脑炎中大脑网络变化的程度和性质.
主要方法:
- 扩散张力成像 (DTI) 和T1加权结构MRI对14名拉斯穆森脑炎患者和20名健康对照进行.
- 基于Fixel的分析量化了微结构白质完整性 (纤维密度和横截面).
- 结构性网络模型分析了半球间和半球内连接和全球效率.
主要成果:
- 与对照人群相比,拉斯穆森脑炎患者的纤维密度,横截面和边缘重量在异形连接和半球间连接方面都减少了.
- 较长的疾病持续时间与双边白质完整性下降相关,但在逆损伤性皮质脊柱管中纤维密度增加.
- 网络效率和半球内边缘重量随着两半球疾病持续时间的增加而增加,这表明了补偿机制.
结论:
- 拉斯穆森脑炎是一种影响整个大脑白质的网络疾病,不仅限于受损的半球.
- 这种疾病涉及退行性白质变化和适应性网络变化.
- 早期疾病发作与更广泛的白质完整性损失有关.
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