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阿尔茨海默氏症成像联盟

Tyler R Bell1,2, Daniel E Gustavson3, Carol E Franz1,2

  • 1University of California San Diego, La Jolla, CA, USA.

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概括
此摘要是机器生成的。

通过ECog尺度测量的主观记忆衰退 (SMD) 预测客观记忆丧失和阿尔茨海默病 (AD) 脑部变化. 参与者报告的SMD可以识别其他评估遗漏的风险.

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科学领域:

  • 神经科学是一个神经科学.
  • 认知老龄化 认知老龄化
  • 阿尔茨海默氏症疾病研究研究

背景情况:

  • 主观记忆衰退 (SMD) 是阿尔茨海默病 (AD) 的潜在早期标志物.
  • 之前的研究表明,SMD与客观记忆和大脑变化有关,可能是由于单项措施而导致的.
  • 日常认知 (ECog) 尺度使用多个项目和信息员报告来更好地检测早期AD风险.

研究的目的:

  • 研究基于ECog的SMD与客观记忆之间的关联.
  • 检查ECog-SMD与AD相关的神经退行变化之间的关系.
  • 为了确定ECog-SMD是否能预测未来的记忆变化和AD大脑特征.

主要方法:

  • 利用来自越南时代双胞胎老龄化研究 (VETSA) 的数据与认知不受损的男性.
  • 在两个时间点向参与者和告知者管理ECog记忆子表.
  • 通过MRI评估客观记忆和AD大脑特征得分 (海马体积,皮质厚度).
  • 采用结构方程模型来分析并发和预测关联.

主要成果:

  • 来自参与者和告密者报告的ECog-SMD与较差的客观记忆和较低的AD脑签名得分相关.
  • 基线ECog-SMD预测未来客观记忆的下降和AD大脑特征的减少.
  • 随着时间的推移,ECog-SMD的增加与记忆力下降有关,但与AD大脑特征的变化无关.

结论:

  • SMD的ECog评级反映了当前的客观记忆和AD相关的神经退行.
  • 参与者报告的SMD显示与未来的神经退行相关,可能识别标准测试无法检测到的风险.