错误折叠的α-synuclein聚合物和阿尔茨海默病病理学之间的关联 in vivo
Alexa Pichet Binette1, Angela Mammana2, Laura Wisse3
1Clinical Memory Research Unit, Department of Clinical Sciences Malmö, Lund University, Lund, Sweden.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|September 11, 2024
概括
错误折叠的α-synuclein (α-synuclein) 与阿尔茨海默病 (AD) 患者的粉样β (Aβ) 病理学有关. 这种关联表明神经退行症的共同分子途径.
科学领域:
- 神经科学是一个神经科学.
- 生物化学 生化学
- 老年学是一门学科.
背景情况:
- 错误折叠的α-synuclein (α-synuclein) 与神经退行性疾病有关.
- 研究α-synuclein与阿尔茨海默病 (AD) 生物标志物之间的关系对于了解疾病机制至关重要.
研究的目的:
- 为了检查错误折叠的α-synuclein和AD生物标志物,特别是粉样β (Aβ) 和tau之间的关联.
- 确定这些关联是否在不同的认知状态和独立队列中持续存在.
主要方法:
- 利用来自两个大队伍的数据:用于早期和可靠地识别神经退行性疾病的生物标志物2 (BioFINDER-2) 和阿尔茨海默病神经成像计划 (ADNI).
- 包括2315名具有不同认知状态的参与者 (认知不受损,轻度认知障碍,AD痴呆症).
- 通过种子放大试验测量脑脊液 (CSF) 的α-synuclein和CSF/PET Aβ和tau水平,根据年龄,性别和认知状态进行调整.
主要成果:
- 在两个队列中,Aβ病理与基线α-synuclein阳性显著相关 (p ≤ 0.02).
- 陶水平与α-synuclein阳性没有关联.
- 在一个队列 (p = 0.02) 中,α-synuclein阳性参与者显示出Aβ负载随着时间的推移在统计学上显著,尽管适度,但更快的增加.
结论:
- 同时错误折叠的α-synuclein和Aβ水平在体内存在关联,这表明这些分子通路在人类之间存在联系.
- α-synuclein和Aβ病理之间的关联在独立的队列中一致,并且独立于年龄,性别和认知状态.
相关概念视频
Amyloid Fibrils
9.3K
Amyloid fibrils are aggregates of misfolded proteins. Under most circumstances, misfolded proteins are either refolded by chaperone proteins or degraded by the proteasome. However, in the case of a mutation or a disease, these proteins can accumulate to form large clusters and often further assemble to form elongated fibers, called fibrils.
Amyloid deposits were observed as early as 1639 in the liver and the spleen. In 1854, Rudolph Virchow performed iodine staining,...
Amyloid deposits were observed as early as 1639 in the liver and the spleen. In 1854, Rudolph Virchow performed iodine staining,...
9.3K
Alzheimer's Disease: Overview
452
Alzheimer's Disease (AD) is a continually advancing neurodegenerative disorder, distinguished by escalating memory loss, cognitive dysfunction, and dementia. The disease unfolds in three stages: preclinical, mild cognitive impairment (MCI), and dementia. Its onset is insidious, and the progression gradual, with the cause not well explained by other disorders.
The clinical diagnosis of AD hinges on the presence of memory and other cognitive impairments. Biomarkers, such as changes in Aβ...
The clinical diagnosis of AD hinges on the presence of memory and other cognitive impairments. Biomarkers, such as changes in Aβ...
452


