阿尔茨海默病病理产品与年龄之间的关联以及阿尔茨海默病的病理产品基础诊断模型
Weizhe Zhen1, Yu Wang2, Hongjun Zhen3
1Graduate School, Beijing University of Chinese Medicine, Beijing, China.
Frontiers in aging neuroscience
|January 3, 2025
概括
阿尔茨海默病 (AD) 生物标志物Tau和Aβ在AD和非AD组中显示相反的年龄相关趋势. 一个机器学习模型使用这些生物标志物和年龄准确诊断了AD.
科学领域:
- 神经学 神经学
- 生物化学 生物化学
- 老年学是一门学科.
背景情况:
- 阿尔茨海默病 (AD) 显著影响生活质量和健康.
- 早期诊断AD对于有效的治疗和管理至关重要.
- 了解衰老和AD病理之间的关系至关重要.
研究的目的:
- 为了研究年龄和AD病理产物 (t-Tau,p-Tau,Aβ) 之间的关系.
- 使用这些生物标志物和年龄来开发阿尔茨海默病的早期诊断模型.
- 分析AD和非AD群体中病理产物的与年龄相关的趋势.
主要方法:
- 利用了来自阿尔茨海默病神经成像计划 (ADNI) 数据库 (2005-2024) 的数据.
- 使用相关性分析和线性回归来检查生物标志物 (t-Tau,p-Tau,Aβ),年龄和性别.
- 使用机器学习算法 (XGBoost,SVM) 开发了一个AD诊断模型.
主要成果:
- 相关性分析显示,年龄和Tau (Corr=0.75),p-Tau (Corr=0.71) 和Aβ (Corr=0.54) 之间存在很强的关联.
- 在AD患者中,p-Tau随着年龄的增长显著下降,而Aβ随着年龄的增加而增加.
- 与AD组相比,非AD组对病理产品的年龄相关趋势相反.
- 一个最佳的AD诊断模型实现了0.959.95的AUC.
结论:
- 在AD和非AD人群中,Tau和Aβ表现出相反的与年龄相关的趋势.
- 线性回归模型表明,在AD和非AD组之间,病理产品的年龄相关轨迹不同.
- 通过机器学习和选定的功能,成功构建了一个高性能AD诊断模型.
相关概念视频
Alzheimer's Disease: Overview
311
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...
311
Alzheimer's Disease: Treatment
125
Alzheimer's Disease (AD), a neurodegenerative disorder, is pathologically identified by amyloid plaques and neurofibrillary tangles composed of tau protein. AD pharmacotherapy aims to manage cognitive symptoms, delay disease progression, and treat behavioral symptoms. The treatment is primarily symptomatic and palliative, with no definitive disease-modifying therapy available. Cholinesterase inhibitors, including donepezil (Aricept), rivastigmine (Exelon), and galantamine (Razadyne), are...
125
Amyloid Fibrils
9.0K
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,...
9.0K


