APOE-ε4等位基与认知功能之间的关联是由阿尔茨海默病的病理介导的:在混合样本中进行基于人口的尸体解剖研究
Regina Silva Paradela1, Alberto Fernando Oliveira Justo2, Vítor Ribeiro Paes3
1Division of Geriatrics, University of São Paulo Medical School, 455 Doutor Arnaldo Avenue, room 1355, São Paulo, SP, Brazil. reginaps@usp.br.
Acta neuropathologica communications
|December 20, 2023
概括
阿尔茨海默病的主要遗传风险因素,阿波利波蛋白E ε4基因 (APOE-ε4),通过阿尔茨海默病的病理学影响认知. 在一个混合的尸检研究中,其他大脑疾病并没有调解这种关联.
科学领域:
- 神经科学是一个神经科学.
- 遗传学 遗传学 是一个
- 病理学 病理学 病理学
背景情况:
- 阿波利波蛋白E ε4基因 (APOE-ε4) 是晚发性阿尔茨海默病 (AD) 的主要遗传风险因素.
- 通过各种神经病理学,将APOE-ε4与认知功能联系在一起的证据是有限的,特别是在不同种族群体之间.
- APOE和痴呆症之间的关联可能因种族而异,需要在混合人群中进行研究.
研究的目的:
- 研究通过APOE-ε4影响认知能力的途径.
- 检查AD特异性病理和非AD神经病理 (例如,脑血管病变,勒维体病) 的调解作用.
- 在使用混合样本进行尸检研究中进行此评估,以提高概括性.
主要方法:
- 使用基于国际标准的免疫组织化学进行神经病理学检查.
- 参与者分为APOE-ε4载体和非载体的分类.
- 调解分析评估APOE-ε4通过各种病理对认知的间接影响,包括AD病理,缺口性心脏病发作,亚林动脉硬化,脑粉样血管病变 (CAA),莱维体病 (LBD) 和TAR DNA结合蛋白43 (TDP-43).
主要成果:
- 这项研究包括648名参与者 (平均年龄75岁,52%是女性,69%是白人,28%是APOE-ε4携带者).
- 认知能力显著受到AD病理的影响,特别是神经纤维状结和神经性斑块.
- 缺口性心脏病发作,质动脉样硬化,CAA,LBD和TDP-43并没有在APOE-ε4到认知途径中起到调解作用.
结论:
- APOE-ε4与认知功能之间的关联部分是由阿尔茨海默病的病理介导的.
- 大脑血管病变和其他神经退行性疾病似乎没有介导APOE-ε4和认知之间的关系.
- 这些发现突出了AD特异性病理学在APOE-ε4如何影响认知的核心作用.
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