在整个MAPT突变临床谱的网络连接性变化
Liwen Zhang1, Taru M Flagan1, Suvi Häkkinen1
1Memory and Aging Center, Department of Neurology, Weill Institute for Neurosciences, University of California, San Francisco, San Francisco, CA, USA.
Annals of neurology
|July 11, 2023
概括
微管相关蛋白 (MAPT) 突变载体的网络连接性变化在症状出现之前就出现了. 使用功能性MRI生物标志物可能可以早期检测前叶退化.
科学领域:
- 神经科学是一个神经科学.
- 神经学 神经学
- 生物标志物发现发现
背景情况:
- 微管相关蛋白 (MAPT) 突变是前叶退化的一个遗传原因.
- 早期发现MAPT突变对于及时干预至关重要.
- 对于早期诊断,迫切需要新的生物标志物.
研究的目的:
- 在症状和症状前的MAPT突变载体中使用无任务功能MRI (fMRI) 调查网络连接.
- 为了确定潜在的fMRI生物标志物用于早期疾病检测.
主要方法:
- 对比了来自17名症状携带者,39名症状前携带者和81名对照者的fMRI数据.
- 在相关神经网络中利用基于种子和全脑连接性的分析.
- 应用K-means集群,以确定在前症状携带者中的连接异质性.
主要成果:
- 症状和症状前携带者表现出网络连接中断的情况.
- 与对照组相比,预症状携带者表现出与年龄相关的连接性改变.
- 出现了两个预症状子组:一个具有低连接性,一个具有超连接性.
- 低连接性亚组显示神经纤维光链水平较高,记忆和灰质体积的纵向下降更大.
结论:
- 网络连接的改变可以在MAPT突变的症状前阶段检测到.
- 基于fMRI的网络分析显示,作为早期诊断生物标志物具有前途.
- 需要进一步的研究来确定连接性概况是否可以预测疾病的进展.
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