大脑微出血和认知衰退之间的联系跨越阿尔茨海默氏症连续性
Homayoon Khaledian1,2, Ali Julaee Rad3, Pardis Barjisi4
1Borderless Research, Advancement and Innovation in Neuroscience Network (BRAINet), Tehran, Iran.
Aging clinical and experimental research
|May 12, 2025
概括
大脑微出血 (CMH) 与认知能力下降有关,特别是在轻度认知障碍 (MCI) 患者的视觉空间能力下降. 这一发现凸显了CMH作为阿尔茨海默病进展的潜在生物标志物.
科学领域:
- 神经学 神经学
- 神经成像是一种神经成像.
- 老年学是一门学科.
背景情况:
- 阿尔茨海默氏症痴呆连续性涉及渐进性的认知衰退.
- 大脑微出血 (CMH) 是大脑中的小出血,通常与衰老和脑血管疾病有关.
- 在阿尔茨海默病 (AD) 的不同阶段,CMH与认知功能之间的关系需要进一步阐明.
研究的目的:
- 研究大脑微出血 (CMH) 与认知衰退之间的关联.
- 探索这一关联在认知障碍的范围,从认知正常 (CN) 到轻度认知障碍 (MCI) 和阿尔茨海默病 (AD).
主要方法:
- 使用了阿尔茨海默病神经成像计划 (ADNI) 数据库,其中有619名参与者 (CN,MCI,AD).
- 使用T2加权MRI评估CMH,专注于感兴趣的皮下区域 (ROI).
- 使用临床痴呆症评分表 (CDR-SB),迷你精神状态检查 (MMSE) 和复合认知评分,控制年龄,性别和APOE ε4状态来评估认知功能.
主要成果:
- 冠状腺癌的患病率为27.7%,主要是前额下皮层ROI.
- 与没有CMH的MCI参与者相比,CMH的MCI参与者显示出明显较差的视觉空间复合分数.
- 在AD和MCI组中,APOE ε4阳性性更高,并且与AD患者中CMH可能性增加有关.
结论:
- 大脑微出血 (CMH) 与轻度认知障碍 (MCI) 的认知衰退有显著的关联.
- CMH与认知衰退之间的关联在视觉空间能力方面尤为明显.
- 在阿尔茨海默病进展的背景下,CMH可以作为相关的成像生物标志物.
相关概念视频
01:26Alzheimer's Disease: Overview
350
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...
350
01:30Dementia
76
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....
76
01:30Cognitive Development During Adulthood
34
Cognitive development continues throughout adulthood, undergoing significant shifts across early, middle, and late stages. Individual transition occurs from adolescent idealism to pragmatic and adaptable thinking in early adulthood. During this period, individuals learn to integrate personal beliefs with the recognition that other perspectives are equally valid. Exposure to the complexities of modern society, diverse experiences, and higher education contribute to this adaptive thought process,...
34
01:13Amnesia
84
Amnesia is a condition marked by long-term memory loss, which impairs the ability to recall past events or create new memories.
The severity and duration of memory loss vary depending on the type and underlying cause. Amnesia is classified into two main types: retrograde and anterograde.
Retrograde amnesia is marked by the loss of memories formed before the onset of the condition. Patients may recall distant past events but often forget those occurring shortly before the incident.
Anterograde...
The severity and duration of memory loss vary depending on the type and underlying cause. Amnesia is classified into two main types: retrograde and anterograde.
Retrograde amnesia is marked by the loss of memories formed before the onset of the condition. Patients may recall distant past events but often forget those occurring shortly before the incident.
Anterograde...
84