与大脑灰质模式相关的风险和保护因素在基于人口的70岁认知不受损的群体中
Giulia Lorenzon1, Anna Marseglia2,3, Konstantinos Poulakis2
1Division of Clinical Geriatrics, Department of Neurobiology, Care Sciences and Society, Center for Alzheimer Research, Karolinska Institutet, Huddinge, 141 52, Sweden. giulia.lorenzon@ki.se.
BMC medicine
|December 18, 2025
概括
老龄化中的大脑灰质模式与健康和认知有关. 针对心血管和心理社会因素可能有助于保持老年人的大脑健康.
科学领域:
- 神经成像是一种神经成像.
- 老年学是一门学科.
- 认知神经科学 认知神经科学
背景情况:
- 衰老与各种大脑灰质 (GM) 变化有关,这些变化可以模仿或先于痴呆.
- 在认知健康的个体中了解这些与年龄相关的转基因模式对于区分正常衰老和病理过程至关重要.
研究的目的:
- 在认知不受损的老年人中识别明显的灰质 (GM) 模式.
- 描述与这些转基因模式相关的临床,认知和生物标志物概况.
- 为了检查认知功能和大脑结构的5年纵向轨迹.
主要方法:
- 在MRI数据 (皮层厚度,皮层下体积) 上使用随机森林聚类,来自哥德堡H70研究的746名参与者.
- 采用回归模型来评估与阿尔茨海默病的临床,MRI,生化和脑脊液 (CSF) 生物标志物的关联.
- 分析了认知和大脑结构的5年纵向变化.
主要成果:
- 确定了五个不同的转基因集群,主要是在前端平行区域.
- 集群2表现出与糖尿病,风险酒精使用,较差的情节性记忆/视觉空间能力和加速认知衰退相关的扩散转基因损失.
- 其他群体显示与BMI,吸烟,抑郁,教育和心脏病等因素的关联,突出了不同的临床特征.
结论:
- 心血管和心理社会因素在衰老中显著影响灰质完整性.
- 灰色物质的完整性与认知功能直接相关.
- 针对这些可修改的风险因素的干预措施有望在以后的生活中保持大脑健康.
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