阿尔茨海默病中的功能连接体层次功能障碍及其与认知和基因表达概况的关系
Chuchu Zheng1,2, Wei Zhao1,2, Zeyu Yang1,2
1School of Mathematics and Statistics, Hunan Normal University, Changsha, China.
Journal of neuroscience research
|January 29, 2024
概括
阿尔茨海默病 (AD) 改变了大脑网络组织,特别是二次梯度,影响了记忆和语言. 这些大脑变化与特定的基因表达相关,为AD病理学提供了新的见解.
科学领域:
- 神经科学是一个神经科学.
- 神经成像是一种神经成像.
- 基因组学就是基因组学.
背景情况:
- 人类大脑的功能组织遵循一种传感引擎到跨模态皮质连续.
- 阿尔茨海默病 (AD) 与广泛的功能网络改变有关.
- 阿尔茨海默病对大脑网络层次结构的影响及其与认知和基因表达的关系在很大程度上是未知的.
研究的目的:
- 为了研究在阿尔茨海默病的功能网络梯度的变化.
- 探索改变的大脑梯度和认知功能 (记忆,语言) 之间的关系.
- 检查AD中渐变变化和基因表达特征之间的关联.
主要方法:
- 利用休息状态功能磁共振成像 (fMRI) 数据来自233名受试者 (185名AD患者,48名对照).
- 分析了不同大脑网络中二级功能网络梯度的变化.
- 与认知得分和基因表达数据相关的梯度变化.
主要成果:
- 二次梯度反映了一个感觉电机到跨模态皮质轴.
- 艾滋病患者在视觉和体运动网络 (SOM) 中的二次梯度得分增加.
- 在默认模式和前对对联网络中,AD患者的二次梯度得分下降.
- 在SOM和突出网络 (SAL) 中的二次梯度得分与AD的记忆功能正相关.
- 在SAL中的二次梯度也与AD中的语言功能有积极的相关性.
- 与AD相关的梯度变化与基因表达有空间联系,特别是在与神经生物学相关的途径中.
结论:
- 阿尔茨海默病显著改变了大脑的功能网络梯度.
- 这些梯度变化与记忆和语言的认知障碍有关.
- 大脑网络中的宏观结构变化与AD中的微观基因表达模式有关.
- 这些发现加深了对AD中大脑网络组织,认知和遗传学之间的相互作用的理解.
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