老龄化作为阿尔茨海默氏症疾病分类中的积极参与者:从BrainAge模型中特征选择的洞察力
Jorge Garcia Condado1,2,3, Ines Verdugo Recuero4, Iñigo Tellaetxe Elorriaga1,2
1Computational Neuroimaging Lab, Biobizkaia Health Research Institute, Barakaldo, 4890, Spain.
medRxiv : the preprint server for health sciences
|November 19, 2025
概括
对于阿尔茨海默病诊断的BrainAge模型受到年龄偏差的影响. 仔细的特征选择对于区分衰老影响与疾病病理学至关重要,以获得可靠的生物标志物.
科学领域:
- 神经科学是一个神经科学.
- 生物标志物发现发现
- 计算生物学 计算生物学
背景情况:
- BrainAge模型使用神经成像或临床数据估计生物大脑年龄.
- 这些模型对研究神经退行性疾病如阿尔茨海默氏症有前途.
- 神经成像特征中的与年龄相关的偏见可能会混阿尔茨海默病的诊断.
研究的目的:
- 调查年龄偏差对BrainAge模型对阿尔茨海默病诊断的影响.
- 为了确定特征选择是否可以减轻衰老和疾病病理学之间的混效应.
- 为了比较BrainAge deltas与阿尔茨海默氏症病期分级的直接特征分类的实用性.
主要方法:
- 按年龄和辨别能力的相关性排列神经影像和神经心理特征.
- 经过训练的BrainAge模型使用优化为年龄预测或疾病分类的特征子集.
- 在临床组中评估BrainAge三角误差和分类性能.
- 比较BrainAge delta分类与原始特征上的后勤回归.
主要成果:
- 神经成像特征与衰老更相关;神经心理特征更好地区分阿尔茨海默病.
- 根据年龄优化的BrainAge模型产生了低于最佳的疾病分类deltas.
- 疾病优化的BrainAge模型显示年龄预测精度降低,这表明了权衡.
- BrainAge提供了跨阶段的连续测量,与离散分类标签不同.
结论:
- 衰老显著影响基于BrainAge的阿尔茨海默氏症疾病分类.
- 特定任务的特征选择对于减轻BrainAge模型中的年龄偏差至关重要.
- 模型设计必须确保BrainAge在神经退行性疾病研究中的适当应用.
相关概念视频
Alzheimer's Disease: Overview
1.6K
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...
1.6K
Alzheimer's Disease: Treatment
772
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...
772
Dementia
498
Dementia is a collective term for cognitive disorders primarily affecting memory, thinking, and reasoning. It is not a specific disease but a syndrome, with Alzheimer's disease being the most common cause, accounting for approximately 60-80% of cases. Other types include vascular dementia, Lewy body dementia, and frontotemporal dementia. Dementia affects millions worldwide, particularly older adults, though it is not a normal part of aging.
The progression of dementia is generally gradual....
The progression of dementia is generally gradual....
498


