海马微质,AD和LATE-NC,以及老年人认知能力下降之间的关联
Alifiya Kapasi1,2, Lei Yu1,3, Sue E Leurgans1,3
1Rush Alzheimer's Disease Center, Rush University Medical Center, Chicago, Illinois, USA.
概括
海马体中的微质细胞炎症加速认知衰退,特别是记忆和处理速度. 这种联系在一定程度上可以通过tau纠和与边缘相关的TDP-43脑病变的神经病理变化来解释.
科学领域:
- 神经科学是一个神经科学.
- 神经病理学神经病理学
- 认知老龄化 认知老龄化
背景情况:
- 微质在脑炎症中起着至关重要的作用,并与神经退行性疾病有关.
- 了解微质细胞对认知衰退的具体贡献,对于开发向疗法至关重要.
研究的目的:
- 研究海马微质炎症,神经病理变化和认知衰退之间的关联.
- 确定团和LATE-NC在微质和认知之间的关系中的中介作用.
主要方法:
- 从每年临床评估参与者的死后大脑捐赠的分析.
- 量化海马微质负担,粉样β (Aβ),陶,以及与边缘相关的TDP-43脑病变神经病理变化 (LATE-NC).
- 统计建模,包括混合效应,线性回归和路径分析,以评估关联和调解.
主要成果:
- 增加海马微质荷重与全球认知,情节性记忆,语义记忆和感知速度的更快下降相关.
- 团和LATE-NC独立地与微质荷重相关.
- 海马中的团和TDP-43解释了微质和认知衰退之间的约一半的关联.
结论:
- 由海马微质驱动的炎症对认知能力下降有显著的贡献.
- 团和LATE-NC部分介导微质对认知的有害影响.
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