细胞特征是表征前前性痴呆症的功能性基础
Kamen A Tsvetanov1,2, Maura Malpetti1,3, P Simon Jones1
1Department of Clinical Neurosciences and Cambridge University Hospitals NHS Trust, University of Cambridge, Cambridge, CB23 3EB, UK.
Brain : a journal of neurology
|November 24, 2025
概括
遗传前性痴呆症 (FTD) 的预症状携带者由于保留了大脑功能整合,保持了认知功能,为基于性的治疗提供了希望.
科学领域:
- 神经科学是一个神经科学.
- 遗传学 遗传学 是一个
- 认知科学 认知科学
背景情况:
- 前性痴呆症 (FTD) 经常表现出自体主导遗传,允许研究症状前阶段.
- 大脑的结构变化在FTD的认知症状之前超过十年,与症状后的衰退形成鲜明对比.
- 功能连接在健康衰老中比结构成像更好地预测认知功能.
研究的目的:
- 测试在前症状FTD携带者中,大脑全功能整合是否赋予了对渐进性病理的弹性.
- 研究FTD风险人群中功能整合,认知和缩之间的关系.
主要方法:
- 使用功能磁共振成像 (fMRI) 评估功能连接组集成在289名症状前FTD携带者和271名非携带者中.
- 采用了正统相关性和多重线性回归模型来分析成像,认知和遗传数据.
- 检查功能整合图和基因转录档案之间的空间重叠,以探索细胞弹性机制.
主要成果:
- 预症状携带者呈现渐进性缩,但与非携带者相比保持正常的认知功能.
- 在所有年龄段的前症状携带者中,功能整合被保留,而在家族非携带者中,特别是认知控制网络中,功能整合下降.
- 功能整合中的行为相关变化与缩严重程度无关,这表明有弹性机制.
结论:
- 增强大脑功能整合似乎是防止临床FTD转换的关键弹性机制.
- 研究结果表明,细胞弹性签名涉及质细胞,提供了超越标准神经成像机制的见解.
- 结果对设计针对痴呆风险人群的复原能力的症状前治疗有影响.
相关概念视频
01:26Alzheimer'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
01:30Dementia
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
01:37Neural Regulation
43.0K
Digestion begins with a cephalic phase that prepares the digestive system to receive food. When our brain processes visual or olfactory information about food, it triggers impulses in the cranial nerves innervating the salivary glands and stomach to prepare for food.
43.0K
01:22Alzheimer'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