在阿尔茨海默病和衰老中测试多基因风险评分对形态微质激活的测试
Earvin S Tio1,2, Timothy J Hohman3, Milos Milic1
1Krembil Centre for Neuroinformatics, Centre for Addiction and Mental Health, Toronto, ON, Canada.
Journal of Alzheimer's disease : JAD
|July 17, 2023
概括
微质激活的多基因风险评分没有改善阿尔茨海默病 (AD) 或认知衰退的预测. 需要进一步的研究来开发AD中神经炎症的遗传分数.
科学领域:
- 神经科学是一个神经科学.
- 遗传学 遗传学 是一个
- 老年学是一门学科.
背景情况:
- 神经炎症和微质激活是阿尔茨海默病 (AD) 的早期指标.
- 目前,对微质激活的直接体内观察是不可能的.
- 多基因风险评分 (PRS) 可以对复杂特征的遗传性倾向进行索引.
研究的目的:
- 评估微质激活PRS (PRSmic) 是否提高现有的AD PRS对晚年认知障碍的预测能力.
- 研究PRSmic在预测AD诊断和认知衰退方面的实用性.
主要方法:
- PRSmic是使用阿尔茨海默病神经成像计划 (ADNI) 队列 (n=450) 的数据开发和优化的.
- 在两个独立的基于人口的队列中验证了PRSmic的预测性能 (总n=212,237).
- 在ADNI队列中,研究了PRSmic和AD生物标志物 (成像和流体) 之间的关联.
主要成果:
- 在外部验证队列中,PRSmic并没有显著改善AD诊断或认知表现的预测.
- 在ADNI队列中观察到PRSmic和AD生物标志物之间的名义关联,但效果方向不一致.
- 该研究没有发现PRSmic对AD相关结果的实质性预测增强.
结论:
- 用于对衰老中的神经炎症风险进行索引的遗传分数是有价值的,但需要更强大的全基因组关联研究.
- 未来的生物库规模研究应纳入近端神经炎症过程的表型化,以完善PRS的发展.
- 由于微质激活数据的局限性,目前的PRSmic方法可能不足以预测AD风险或认知障碍.
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