在阿尔茨海默病和晚年抑郁症中,灰质结构和分子特征
Shuo Yang1, Xuemei Wang1, Yan Yan2
1The Department of Radiology of the Affiliated Psychiatric Hospital of Anhui Medical University, Hefei, Anhui, China; The Department of Radiology of the Fourth People's Hospital of Hefei, Hefei, Anhui, China.
Journal of affective disorders
|December 19, 2025
概括
阿尔茨海默病 (AD) 和晚年抑郁症 (LLD) 显示出明显的灰质缩模式和分子变化,尽管有一些共同的生物途径. 这项研究有助于早期识别和针对这些神经疾病进行有针对性的干预.
科学领域:
- 神经科学是一个神经科学.
- 神经学 神经学
- 放射学 放射学是一门学科.
背景情况:
- 阿尔茨海默病 (AD) 和晚年抑郁症 (LLD) 是影响老年人的不同神经疾病.
- 了解它们的独特和共同的神经病理特征对于有效的诊断和治疗至关重要.
研究的目的:
- 系统地比较AD和LLD患者的灰质体积变化.
- 探索潜在的分子机制和细胞表型.
- 为早期识别和有针对性的干预策略提供见解.
主要方法:
- 招募了33名AD患者,38名LLD患者和40名健康对照 (HC).
- 使用高分辨率结构MRI (3.0特斯拉) 和基于voxel的形态测量 (VBM) 进行灰色物质分析.
- 使用JuSpace工具箱用于神经递质配置和细胞表面标记物的交叉模式空间相关性分析.
主要成果:
- 与HC和LLD组相比,AD患者表现出广泛的灰质缩,特别是在海马体和环状皮质中.
- 与HC患者相比,LLD患者没有显著的灰质体积差异.
- 交叉模式分析揭示了AD和LLD中明显的神经递质和细胞标记器关联,两组都显示了改变的5-HT系统和线粒体功能.
结论:
- 在灰色质缩,神经递质特征和细胞表型方面,AD和LLD呈现部分重叠但显著不同的特征.
- 这些发现支持了AD和LLD共享共同的生物学途径,但遵循不同的疾病轨迹的概念.
- 该研究为区分这些疾病和开发定制治疗方法提供了基础.
相关概念视频
Long-term Depression
3.0K
Long-term depression, or LTD, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTD is the process of synaptic weakening that occurs over time between pre and postsynaptic neuronal connections. The synaptic weakening of LTD works in opposition to synaptic strengthening by long-term potentiation (LTP) and together are the main mechanisms that underlie learning and memory.
Calcium Ion Concentration Mechanism
If over...
Calcium Ion Concentration Mechanism
If over...
3.0K
Long-term Depression
33.0K
Long-term depression, or LTD, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTD is the process of synaptic weakening that occurs over time between pre and postsynaptic neuronal connections. The synaptic weakening of LTD works in opposition to synaptic strengthening by long-term potentiation (LTP) and together are the main mechanisms that underlie learning and memory.
33.0K
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


