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When a pathogen enters the body and reproduces, it can cause an infection, damage body cells, and cause illness symptoms that eventually lead to disease. Therefore, its prevention requires breaking the chain of infection.
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基础科学和病原发生学

Hannah M Klinger1, Vaibhav A Janve2, Mabel Seto1,3

  • 1Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.

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PubMed
概括
此摘要是机器生成的。

在没有受损的老年人中,全血基因表达与认知能力下降有关,特别是在与阿尔茨海默病生物标志物 (如Aβ-PET和p-tau217.1) 相互作用时.

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科学领域:

  • 神经科学是一个神经科学.
  • 基因组学就是基因组学.
  • 生物标志物 生物标志物

背景情况:

  • 大量脑组织研究将基因表达与阿尔茨海默病 (AD) 和认知衰退联系起来.
  • 以前的研究集中在老年人和生命末期的变化.
  • 在血液等可访问的样本中识别早期的AD生物通路至关重要.

研究的目的:

  • 为了识别与临床无损的老年人认知衰退相关的全血转录信号.
  • 探索基因表达和体内AD表型之间的关系 (Aβ-PET,p-tau217).
  • 阐明与阿尔茨海默氏症相关的早期生物学途径.

主要方法:

  • 分析了来自A4和LEARN研究的1737名参与者的全血基因表达数据.
  • 使用线性混合效应模型来评估基因表达和纵向认知表现 (PACC) 之间的关联.
  • 研究了基因表达,性别,APOEε4状态,Aβ-PET负担和p-tau217水平之间的相互作用,FDR校正.

主要成果:

  • 在FDR校正后,没有单个基因转录与认知衰退直接相关.
  • 167个基因在与生物标志物相互作用时显示出与认知的关联.
  • 特定的基因 (例如ETF1P2,ZSCAN2) 与高Aβ-PET负担的个体的认知衰退更快相关,其中一些相互作用涉及性别和APOEε4.4.

结论:

  • 全血转录组信号与认知能力下降有关,主要是通过与阿尔茨海默病生物标志物 (Aβ-PET,p-tau217) 和性别的相互作用.
  • 这些发现突出了基于血液的基因表达的潜力,以了解早期AD的病原性.
  • 需要进一步的研究,包括丰富分析和外部验证,以充分阐明所涉及的生物途径.