在社区老年人群中对不同方面的痴呆病理和认知衰退的遗传倾向
Stefanos N Sampatakakis1, Niki Mourtzi1, Alex Hatzimanolis2
11st Department of Neurology, Aiginition Hospital, Athens Medical School, National and Kapodistrian University, 11528 Athens, Greece.
International journal of molecular sciences
|February 13, 2025
概括
基因倾向,通过粉样β 42和白质超强度的多基因风险评分来衡量,与老年人更快的全球认知衰退有关. 这种与记忆力下降的关联因性别,年龄和教育程度而异.
科学领域:
- 神经科学是一个神经科学.
- 遗传学 是一个遗传学.
- 老年学是一门学科.
背景情况:
- 认知衰退和痴呆症在老年人群中构成重大公共卫生挑战.
- 了解遗传倾向和认知衰老之间的相互作用对于开发有针对性的干预措施至关重要.
- 希腊老龄化与饮食的纵向调查 (HELIAD) 研究为研究这些关联提供了有价值的队列.
研究的目的:
- 为了研究遗传倾向之间的关联,使用粉样β 42 (Aβ42) 和白质超强度 (WMH) 的多基因风险评分 (PRS) 和老年人的认知衰退.
- 检查Aβ42和WMH的PRS如何与全球认知衰退和特定领域的认知变化有关.
- 确定这些关联是否受到年龄,性别和教育等人口因素的改变.
主要方法:
- 利用了来自HELIAD研究的512位认知正常的老年人 (≥64岁) 的数据,平均随访时间为2.9年.
- 使用全面的神经心理测试电池评估认知功能.
- 计算了Aβ42和WMH的多基因风险评分 (PRS),并使用概括估计方程模型分析了它们与认知衰退率的关联.
主要成果:
- 对于Aβ42和WMH来说,更高的PRS与每年全球认知衰退的更快速度显著相关.
- 这些与全球认知衰退的关联在由年龄,性别和教育定义的子组中仍然显著.
- 对Aβ42和WMH的更高PRS与女性,老年人和受过高等教育的参与者的记忆力下降特别相关.
结论:
- 遗传倾向,以Aβ42和WMH的PRS表示,是全球认知衰退的重要因素在老年人中,独立于年龄,性别或教育.
- 遗传风险对记忆力下降的影响不均,似乎受到人口因素的调节,这表明不同的病理生理路径.
- 这些发现突显了遗传风险因素和认知衰老轨迹之间的复杂关系,强调了在痴呆症研究和预防中需要个性化方法的必要性.
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