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临床表现 临床表现

David López-Martos1,2, Mahnaz Shekari1, Gemma Salvadó1,3

  • 1Barcelonaβeta Brain Research Center (BBRC), Pasqual Maragall Foundation, Barcelona, Spain.

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概括
此摘要是机器生成的。

粉样蛋白积累与阿尔茨海默病 (AD) 风险人群的注意力,认知控制和工作记忆的特定大脑变化有关. 这些发现突出了AD发病前的认知衰退的明显模式.

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科学领域:

  • 神经科学是一个神经科学.
  • 神经学 神经学
  • 认知科学 认知科学

背景情况:

  • 微妙的认知能力下降,特别是在执行功能 (EF) 中,可能会在临床阿尔茨海默病 (AD) 发病之前发生.
  • 病理性粉样蛋白 (Aβ) 积累与EF纵向变化之间的关系尚不清楚.
  • 在患有阿尔茨海默氏症风险的认知不受损 (CU) 个体中研究Aβ PET成像和EF变化至关重要.

研究的目的:

  • 为了研究长度Aβ积累模式与EF变化的关系,在患有AD风险的CU个体.
  • 探索AβPET成像和注意力,认知控制和工作记忆的纵向变化之间的声音智能关联.
  • 了解在临床前AD中受Aβ积累影响的大脑区域.

主要方法:

  • 来自ALFA+队列的187个CU个体接受了CSF采样,纵向AβPET扫描和神经心理评估.
  • 通过CSF Aβ42 / 40比率来确定Aβ阳性;使用注意力,认知控制和工作记忆的标准化指数来评估EF变化.
  • 全脑素智能线性回归模型分析了Aβ积累和EF变化之间的变化对变化的关联.

主要成果:

  • 40.64%的参与者是Aβ阳性.
  • 注意力下降与表皮和中皮层Aβ积累相关.
  • 认知控制下降与前额叶Aβ积累相关;工作记忆下降与头顶和叶Aβ积累相关.

结论:

  • 独特的区域Aβ积累模式与CU个体的注意力,认知控制和工作记忆的微妙认知下降有关.
  • 这些发现提供了有关AD相关EF下降影响的大脑区域的见解.
  • 定制的神经心理评估对于监测临床前AD的认知变化很重要.