阿尔茨海默氏症的多基因风险得分与唐氏综合征的认知表型有关
Priyanka Gorijala1,2, M Muaaz Aslam3, Lam-Ha T Dang4,5
1Department of Psychiatry, Washington University School of Medicine, St. Louis, Missouri, USA.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|October 19, 2023
概括
阿尔茨海默病 (AD) 的遗传风险会影响唐氏综合征 (DS) 的成年人的记忆和脑液生物标志物. 这表明共享的生物学途径有助于在两种情况下的认知衰退.
科学领域:
- 神经遗传学 神经遗传学
- 老年学是一门学科.
- 遗传学 遗传学 是一个
背景情况:
- 唐氏综合征 (DS) 与早期阿尔茨海默病 (AD) 的风险增加有关.
- 导致AD风险的遗传因素也可能影响DS患者的认知功能和神经病理学.
研究的目的:
- 研究阿尔茨海默病 (AD) 遗传架构对唐氏综合征 (DS) 认知措施和脑脊液 (CSF) 生物标志物的影响.
- 探索AD多基因风险评分 (PRS) 和DS相关特征之间的关联.
主要方法:
- 算出了阿尔茨海默病 (AD) 多基因风险评分 (PRS),并测试了与DS相关特征的关联.
- 分析包括认知测量 (DS精神状态检查记忆得分) 和CSF生物标志物 (Aβ42,tTau,pTau,Aβ42/40比率).
- 在分析中考虑了APOE基因型的影响.
主要成果:
- 在DS个体中,AD PRS与较低的记忆得分有关,独立于智力障碍和APOE基因型.
- 在DS中,包括APOE的PRS (PRSAPOE) 与CSF生物标志物 (Aβ42,tTau,pTau,Aβ42/40比率) 显示出显著的关联.
- 在家族早期发病的AD或DS队列中,ADPRS与疾病状况无关.
结论:
- 阿尔茨海默氏症的遗传结构影响了DS成年人的认知和CSF表型.
- 在AD和DS中,常见的生物学途径可能是AD和DS中记忆力下降的基础.
- APOE ε4与DS患者的认知衰退有关,为该群体的痴呆症提供了洞察力.
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