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临床表现 临床表现

Panagiotis Georgios Passias1, Roberto Vicidomini1, Rifa Sanjida Punnota1

  • 1Imperial College London, London, Greater London, United Kingdom.

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概括
此摘要是机器生成的。

很大一部分阿尔茨海默氏症患者表现出形缩,而不是中间叶缩,特别是在早期. 这种表层变异具有独特的生物和临床特征,表明tau病理驱动差异.

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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
  • 放射学 放射学是一门学科.

背景情况:

  • 中间叶 (MTL) 神经退行在阿尔茨海默氏症 (AD) 中是典型的.
  • 一些AD患者在没有MTL参与的情况下表现出认知障碍,皮质退行模式不明.
  • 这项研究调查了AD轨迹中超越MTL的早期缩模式.

研究的目的:

  • 评估区域性缩是否可以在阿尔茨海默病中发病于MTL以外的其他区域.
  • 与MTL缩症患者相比,对表层缩症患者的独特特征进行表征.

主要方法:

  • 来自ADNI数据库的1124名参与者的分析.
  • 收集的脑脊液 (CSF) 生物标志物 (Aβ42,Aβ40,tau,ptau) 和感兴趣的区域.
  • 使用PET成像 (Tau,Amyloid,FDG) 来评估标准化摄入值比率并识别早期的叶片体积变化.

主要成果:

  • 25%的患者表现为表层缩,在早期疾病阶段 (SMC,EMCI) 的比例更高.
  • 体组的ADAS-Cog-13得分较低,但MMSE得分较高.
  • 周周缩与降低的ptau/tau和ptau/Aβ42比率,较高的海马粉样蛋白沉积和较低的MTL tau水平有关.

结论:

  • 在25%的记忆障碍患者中,隔离的顶膜缩发生,呈现出独特的生物学,成像和临床特征.
  • 体变体中较低的积可能解释了较轻的认知障碍,突出了在表型差异中的作用.
  • 认知障碍患者的精确分类对于有针对性的治疗选择至关重要.