生物标志物 生物标志物
Francesca M Chappell1, Roberto Duarte2, Maria Del C Valdes Hernandez3
1Centre for Clinical Brain Sciences, University of Edinburgh, Edinburgh, Scotland, United Kingdom.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 25, 2025
概括
在MRI上可见的扩大周血管空间 (PVS) 与成年人的认知表现下降有关. 较高的PVS体积可能预测认知能力下降,突出显示它们对大脑健康的影响.
科学领域:
- 神经成像和认知科学 认知科学
- 血管神经学 血管神经学
- 衰老研究研究 衰老研究
背景情况:
- 周血管空间 (PVS) 是大脑血管周围的充满液体的空间.
- 扩大的PVS可通过磁共振成像 (MRI) 检测,并与衰老和脑血管疾病有关.
- 在成人中,PVS体积与认知功能之间的联系尚不清楚.
研究的目的:
- 调查PVS体积与成年人的认知表现之间的关联.
- 为了确定PVS体积是否会随着时间的推移预测认知能力下降.
主要方法:
- 利用了来自14个队伍的MRI和认知数据.
- 在基底 (BG-PVS) 和白质 (CSO-PVS) 中计算的PVS体积.
- 使用混合效应模型和后勤回归进行了横截面和纵向元分析.
主要成果:
- 在所有研究中,较高的PVS体积与较低的认知分数相关,即使在调整后.
- CSO-PVS体积增加10%与认知评分下降2%有关.
- 在纵向分析中,增加的PVS体积预测了认知障碍的可能性增加,尽管具有人口变异性.
结论:
- 在MRI可见的PVS体积与与衰老,血管和神经退行过程相关的认知衰退有关.
- 需要进一步的纵向研究来巩固这些关联.
- 探索替代PVS措施可能会为认知衰退提供更高的敏感性.
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