在早期痴呆症中,APOE4载体状况确定了白质疾病和灰质缩之间的关联
Ashwati Vipin1,2, Dilip Kumar1,2, See Ann Soo1,2
1Dementia Research Centre - Lee Kong Chian School of Medicine, Nanyang Technology University, 11 Mandalay Road, Singapore, 308232, Singapore.
Alzheimer's research & therapy
|June 3, 2023
概括
白质的超强度导致APOE4非载体的灰质损失大于载体的灰质损失. 这种差异影响执行功能和临床试验设计对痴呆风险.
科学领域:
- 神经成像是一种神经成像.
- 神经学 神经学
- 遗传学 遗传学 是一个
背景情况:
- 白质超强度 (WMH) 与小血管疾病和痴呆症风险有关.
- 阿波利波蛋白E ε4 (APOE4) 基因基因是一个重要的痴呆症风险因素.
- APOE4在修改WMH-灰色物质体积关系中的作用需要进一步研究.
研究的目的:
- 探索WMH和APOE4对灰色物质体积的相互作用影响.
- 评估WMH和APOE4如何影响早期痴呆阶段的认知功能.
主要方法:
- 基于Voxel的形态学分析了来自192名早期痴呆症和259名认知正常参与者的神经成像数据.
- 进行了APOE基因型和神经心理评估.
- 研究了WMH和APOE4对灰质体积和认知表现的独立和相互作用作用.
主要成果:
- 在两组中,高WMH负载与较大的灰质缩相关,无论APOE4状态如何.
- 与携带者相比,非APOE4载体表现出更明显的WMH相关灰质缩.
- 在APOE4非载体早期痴呆症患者中,WMH负载预测了较差的全球和执行功能.
结论:
- 在不同认知阶段的非携带APOE4的人群中,WMH和灰质损失之间的联系更为强烈.
- 在非携带APOE4的人群中,WMH对执行功能产生了更大的负面影响.
- 这些发现对针对痴呆症治疗的临床试验设计有影响.
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