阿尔茨海默病中β-粉样沉积和认知变化的不对称模式:SILCODE研究
Xianfeng Yu1,2, Ying Zhang3, Yue Cai4
1Department of Neurology, Xuanwu Hospital of Capital Medical University, #45 Changchun Street, Xicheng District, Beijing 100053, China.
Cerebral cortex (New York, N.Y. : 1991)
|December 22, 2024
概括
阿尔茨海默氏病显示横向的β-粉样蛋白 (Aβ) 斑块分布,随着疾病阶段的变化而变化. 这种Aβ不对称性与认知能力下降相关,并可能作为神经成像生物标志物.
科学领域:
- 神经科学是一个神经科学.
- 神经病理学神经病理学
- 医疗成像医学成像
背景情况:
- 在阿尔茨海默病 (AD) 中,β-粉样蛋白 (Aβ) 斑块在临床阶段的分布模式尚未完全理解.
- 调查Aβ斑块不对称性可能会揭示AD病原和进展的新见解.
研究的目的:
- 调查与阿尔茨海默病临床进展有关的Aβ斑块的不对称分布.
- 探索Aβ斑块不对称性和认知表现之间的相关性.
主要方法:
- 利用了"中国认知衰退纵向研究" (SILCODE) 队列的数据,包括认知正常,主观认知衰退,轻度认知障碍和AD痴呆症的参与者.
- 使用解剖自动标记图谱计算了Aβ斑块分布的区域不对称指数.
- 采用差异分析和相关性分析来比较Aβ水平并评估与认知分数的关系.
主要成果:
- 在阿尔茨海默氏症不同临床阶段的Aβ斑块分布中发现了横向化的证据.
- 在各种大脑区域的Aβ不对称性与认知表现之间发现了显著的相关性.
- 观察到Aβ斑块分布呈现出不对称的模式,随着疾病的进展而变化.
结论:
- 在阿尔茨海默病的临床进展过程中,Aβ斑块的分布是侧向的,并且在阿尔茨海默病的临床进展过程中动态变化.
- 特定大脑区域的Aβ不对称性与认知功能有显著的关联.
- Aβ横向化显示出作为跟踪阿尔茨海默病进展的神经成像生物标志物的潜力.
相关概念视频
Alzheimer's Disease: Overview
444
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...
444
Amyloid Fibrils
9.2K
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,...
9.2K


