与阿尔茨海默病表型和MCI-AD转换相关的明显的CSFα-synuclein聚合概况
Yanfei Ding1, Lingbing Wang1, Jun Liu1
1Department of Neurology and Institute of Neurology, Ruijin Hospital affiliated to the Shanghai Jiaotong University School of Medicine, Shanghai 200025, China.
The journal of prevention of Alzheimer's disease
|January 25, 2025
概括
大脑脊髓液 (CSF) 中的α-synuclein (α-Syn) 聚合与阿尔茨海默病 (AD) 中的tau病理有关. 不同的α-Syn形式提供了关于AD预后和进展的见解,α-Syn1预测MCI转换为AD.
科学领域:
- 神经科学是一个神经科学.
- 生物化学 生物化学
- 老年学是一门学科.
背景情况:
- 在30-50%的阿尔茨海默氏病 (AD) 患者中观察到α-synuclein (α-Syn) 病理.
- α-Syn和tau蛋白之间的相互作用可能会加剧AD的病理变化.
- 不同的α-Syn聚合状态在AD进展中的具体作用尚不清楚.
研究的目的:
- 调查不同脑脊液 (CSF) α-Syn聚合类型与阿尔茨海默病进展之间的关联.
- 评估α-Syn聚合形式作为从轻度认知障碍 (MCI) 转化为AD的预测因素的潜力.
主要方法:
- 从阿尔茨海默氏病神经成像计划 (ADNI) 数据库中回顾分析数据.
- 包括250名参与者:70名对照组,119名MCI患者和61名AD患者.
- 利用了α-Syn和CSF生物标记关系 (T-tau,p-tau,Aβ42) 的Pearson相关性,以及Cox比例危险模型和Kaplan-Meier曲线来评估α-Syn形式与AD结果的关联以及MCI-to-AD转换.
主要成果:
- 与对照人群相比,MCI和AD患者发现α-Syn水平升高.
- 在α-Syn0组的α-Syn水平从MCI增加到AD,但在α-Syn1组的各组之间没有显著增加.
- α-Syn水平与CSF tau的相关性比Aβ42.2更强.
- 与α-Syn0-AD患者相比,α-Syn0-AD患者表现出更快的认知衰退和更大的海马缩.
- 脑神经损伤患者的CSFα-Syn1聚合增加了转化为AD的风险.
结论:
- 大脑脊髓液 (CSF) 的α-Syn与阿尔茨海默病的陶氏电路病理和神经退行有关.
- 独特的α-Syn聚合概况作为AD的有价值生物标志物.
- 这些生物标志物为不同的AD预后提供了洞察力,并有助于预测早期疾病进展.
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