生物标志物 生物标志物
Kamen A Tsvetanov1,2, P Simon Jones1, Maura Malpetti1
1Department of Clinical Neurosciences, University of Cambridge, Cambridge, Cambridgeshire, United Kingdom.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 25, 2025
概括
功能网络完整性对于前性痴呆症 (FTD) 的认知表现至关重要. 这项研究表明,在遗传性FTD中,结构性和功能性大脑连接之间逐渐脱,影响疾病的进展.
科学领域:
- 神经科学是一个神经科学.
- 神经成像是一种神经成像.
- 认知神经学 认知神经学
背景情况:
- 功能性网络完整性对于前性痴呆症 (FTD) 的症状前期阶段的认知功能至关重要.
- 在FTD中保持结构连接性和功能完整性之间的关系仍然不清楚.
- 本研究调查了与FTD遗传风险和疾病进展有关的结构功能合.
研究的目的:
- 检查结构和功能大脑连接之间的关联.
- 评估这种结构-功能合如何与FTD遗传风险发生变化.
- 了解结构功能合和FTD疾病进展之间的关系.
主要方法:
- 从GENFI队列中使用扩散权重成像和功能性MRI (56例有症状,165例前症状的FTD突变携带者,141例非携带者).
- 量化参与者级别的结构和功能连接体,使用既有方法和Brainnetome Atlas.
- 采用规范化法定相关性分析 (CCA) 共同分析结构和功能连接体,并使用回归模型测试群体差异.
主要成果:
- 确定了将结构连接与功能分离联系起来的重要组成部分 (r=0.656,p < 0.001).
- 与症状前携带者相比,在非携带者中观察到更高的结构功能合.
- 症状携带者表现出最小的结构功能合,表明脱和潜在的认知衰退.
结论:
- 在遗传前性痴呆症中,结构连接和功能分离之间的渐进性脱被证明.
- 这些发现突出了神经系统动态的基于成像的标记.
- 结果对设计FTD前症状,疾病修饰试验有影响.
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