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阿尔茨海默氏症成像联盟

Jessica Hira1, Reza Zomorrodi2, Daniel M Blumberger3

  • 1Temerty Faculty of Medicine, University of Toronto, Toronto, ON, Canada.

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概括
此摘要是机器生成的。

在阿尔茨海默氏症痴呆症 (AD) 中,上纵 (SLF) 中白质变化增加与运动皮层 (MC) 刺激性相关,这表明神经退行症中存在补偿机制.

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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
  • 神经成像是一种神经成像.

背景情况:

  • 皮层异常刺激是阿尔茨海默氏症痴呆症 (AD) 中神经退行症的已知标志物.
  • 在阿尔茨海默氏症中,皮层刺激性和大脑结构变化之间的关系仍然不太清楚.
  • 这项研究调查了运动皮层 (MC) 刺激性,皮层厚度和白质完整性之间的联系.

研究的目的:

  • 评估AD患者运动皮层 (MC) 兴奋度,皮层厚度和白质完整性之间的关系.
  • 测试MC兴奋度与皮层厚度或白质管道完整性在上纵 (SLF) 之间的反向关联的假设.

主要方法:

  • 参与者包括患有AD的老年人和认知正常 (CN) 的对照人.
  • 用单脉冲的跨脑磁刺激 (TMS) 和EEG来测量MC刺激性.
  • 使用T1加权的MRI和扩散加权的MRI来评估皮质厚度和SLF白质完整性 (平均扩散率[MD]和微分异性[FA]).

主要成果:

  • 与CN个体相比,患有AD的参与者显示MC厚度降低,SLFMD增加,FA减少.
  • 在AD和CN组之间,MC刺激性没有显著差异.
  • 在AD组中,SLFMD与MC兴奋性有积极的相关性,而与皮层厚度或FA没有发现显著的关系.

结论:

  • 顶部纵向囊 (SLF) 是一个关键的关联通路,在AD中显示出改变的完整性.
  • 在AD中SLFMD和MC兴奋度之间的积极相关性可能表明神经退行症的补偿反应.
  • 这些发现有助于理解阿尔茨海默氏症痴呆症中结构变化和神经元功能之间的复杂相互作用.