心血管风险因素与老年人较低的后端-中间网络功能连接有关
Léa Chauveau1, Julie Gonneaud1, Géraldine Poisnel1
1Normandy University, UNICAEN, INSERM, U1237, PhIND "Physiopathology and Imaging of Neurological Disorders", Neuropresage Team; GIP Cyceron, Bd Henri Becquerel, BP 5229, Caen, 14074, France.
Alzheimer's research & therapy
|July 15, 2025
概括
诸如高LDL胆固醇等心血管风险因素与老年人后端-中间 (PM) 网络连接性降低有关. 针对这些可修改的因素可以支持认知健康,并防止大脑衰老.
科学领域:
- 神经科学是一个神经科学.
- 心血管健康 心血管健康
- 衰老研究研究 衰老研究
背景情况:
- 皮质-海马网络 (前/AT和后/PM) 对于记忆至关重要,易受衰老和阿尔茨海默病 (AD) 的影响.
- 可修改的心血管风险因素是保护大脑衰老的潜在目标,但它们对AT/PM功能连接的影响尚不清楚.
研究的目的:
- 调查心血管风险因素与老年人AT和PM网络中的功能连接之间的关联.
- 探索与保护性生活习惯和AD风险因素的潜在相互作用.
主要方法:
- 来自Age-Well试验的131名认知正常成年人 (65岁以上) 接受了休息状态fMRI和心血管风险评估.
- 基于种子的分析,使用外皮和副海马皮层确定了AT和PM网络连接.
- 通用增材和线性混合模型分析了心血管风险因素,生活方式和AD风险对连接性的影响.
主要成果:
- 较高的腹部脂肪,LDL胆固醇,吸烟时间和酒精消费与较低的PM网络连接性有关.
- 只有LDL胆固醇在多次比较后仍然显著,这表明它在影响连接性的心血管机制中发挥了直接作用.
- 没有发现与AT网络连接的关联;结果独立于AD生物标志物,不受体力活动或地中海饮食的影响.
结论:
- 趋同的证据将增加的心血管风险因素与在认知不受损的老年人中降低的PM网络功能连接性联系起来.
- 这些关联独立于阿尔茨海默病的风险因素.
- 针对可修改的心血管因素可能是防止与年龄相关的网络衰退和促进认知健康的策略.
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