白质结构网络的特征在具有和没有APOEε4的主观认知衰退的个体中 基于图形理论研究
Simin Deng1,2, Weijie Chen3, Suibin Feng2
1School of Public Health, Sun Yat-sen University, 510080 Guangzhou, Guangdong, China.
Journal of integrative neuroscience
|June 28, 2024
概括
患有主观认知衰退 (SCD) 的人表现出大脑网络结构的改变. 在具有和没有Apolipoprotein E4 (APOEε4) 基因变异的人之间观察到大脑网络变化的差异.
科学领域:
- 神经科学是一个神经科学.
- 大脑网络分析
- 认知衰退研究研究认知衰退研究
背景情况:
- 主观认知衰退 (SCD) 是认知障碍的早期迹象.
- 阿波利波蛋白E4 (APOEε4) 基因是认知能力下降的重要遗传风险因素.
- 了解SCD中的结构性大脑网络变化对于早期诊断和干预至关重要.
研究的目的:
- 研究SCD患者的全脑和脑内节点网络变化.
- 为了比较具有和没有APOEε4等位基因的SCD个体之间的网络特征.
主要方法:
- 横截面研究设计. 截面研究设计.
- 包括三个组:健康对照组 (HC),有APOEε4 (APOEε4+) 的SCD和没有APOEε4 (APOEε4-) 的SCD.
- 白物质结构网络使用分数异构 (FA) 和确定性纤维跟踪构建;用图形理论分析.
主要成果:
- 所有群体都在结构性网络中表现出小世界主义.
- 与HC相比,SCD组 (APOEε4+和APOEε4-) 的聚类系数 (Cp) 和局部效率 (Eloc) 降低.
- 在默认模式网络 (DMN),叶和叶以及皮层下区域中发现了脑内节点特征的显著差异,在APOEε4+和APOEε4-组之间有明显的模式.
结论:
- 主观认知衰退与结构性大脑网络变化有关.
- 在SCD患有APOEε4+和APOEε4-个体之间存在明显的脑内节点特征差异.
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