生物标志物 生物标志物
Mario Torso1, Gerard R Ridgway1, Pegah Khosropanah1
1Oxford Brain Diagnostics, Oxford, United Kingdom.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 24, 2025
概括
威利斯圆形动脉样硬化 (ACW) 影响阿尔茨海默氏症 (AD) 的大脑变化. 较高的ACW严重程度与皮质扩散度的改变相关,这表明它可以用于AD临床试验的患者分层.
科学领域:
- 神经成像是一种神经成像.
- 神经病理学神经病理学
- 血管神经学 血管神经学
背景情况:
- 威利斯圆形动脉样硬化 (ACW) 经常与阿尔茨海默氏病 (AD) 一起发生.
- 了解ACW对AD相关神经退行症的影响对于开发有效的治疗方法至关重要.
- 研究ACW对皮质微结构变化的影响,可以完善结合病理的诊断精度.
研究的目的:
- 评估ACW严重程度对阿尔茨海默氏症神经病理变化 (ADNC) 患者皮质微结构变化的影响.
- 识别潜在的皮质模式,表明结合的血管和神经退行性病理.
- 探索扩散MRI指标在根据ACW严重程度区分AD患者的实用性.
主要方法:
- 分析了58名中度/重度ADNC患者的结构和扩散MRI数据.
- 参与者按ACW严重程度分组 (没有/轻度与中度/严重).
- 皮层扩散度指标 (ParlPD,PerpPD+) 在使用线性模型的组之间进行了比较,以相关的共同变量进行调整,并对多次比较进行了校正.
主要成果:
- 患有中度/严重ACW的参与者在部和部区域显著降低了ParlPD.
- 较低的PerpPD+值在较高ACW严重程度的参与者的左尾区域观察到.
- 在ACW组之间的人口统计,临床或宏观结构MRI数据中没有发现显著差异.
结论:
- 皮层扩散度指标揭示了与AD患者不同ACW严重程度相关的明显的微观结构变化.
- 这些发现支持在AD临床实践和试验中使用皮质扩散性来分层患者.
- 这种方法可能会提高治疗向的准确性,对于患有并发性ACW和AD的个体.
相关概念视频
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