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Infection01:20

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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

Tatiana Georgiades1, Eileen A Chandra1, Bshaier Allehyany2

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

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此摘要是机器生成的。

阿尔茨海默病 (AD) 涉及突触损失,影响认知. 这项研究揭示了AD早期的突触蛋白质组变化,确定了早期治疗干预的潜在目标.

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科学领域:

  • 神经科学是一个神经科学.
  • 分子生物学分子生物学
  • 基因组学就是基因组学.

背景情况:

  • 突触损失是阿尔茨海默病 (AD) 认知衰退的关键因素.
  • 以前的研究表明,AD脑组织中的突触通路和基因表达发生了变化.
  • 局部突触转录组对于突触可塑性和认知功能至关重要.

研究的目的:

  • 在中期阿尔茨海默氏症 (AD) 中的分子变化通过整合来自隔离的synaptoneurosomes的蛋白质组和转录组数据.
  • 调查局部蛋白质合成在AD中的突触蛋白质表达中的作用.
  • 为了确定在AD早期治疗干预的潜在目标.

主要方法:

  • 使用了33个AD病例 (布拉克III-IV) 和33个非患病对照 (NDC,布拉克0-II) 的死后人类中椎组织.
  • 使用SynPER方法分离的synaptoneurosomes.
  • 进行了无标签的定量蛋白质组学 (LC-MS/MS) 和散装RNA-seq,将数据与Omix v1.0.0.0集成.
  • 进行了beta-amyloid和pTau (PHF1) 的组织病理学表征.

主要成果:

  • 在中期AD synaptoneurosomes中观察到下调的线粒体功能.
  • 与对照组相比,AD中前突触活性区的参与增加,没有显著的前和后突触区区分差异.
  • 不同表达分析揭示了局部蛋白质合成在突触蛋白质表达中的作用.
  • 多奥米克因子分析确定了粉样蛋白和病理对观察到的变异的贡献.

结论:

  • 在AD中,在广泛的突触损失之前,突触蛋白质中的阐明变化.
  • 确定了潜在的潜在机制,有助于AD的突触变化.
  • 提供了关于阿尔茨海默病早期治疗干预的潜在目标的见解.