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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

Methasit Jaisa-Aad1,2,3, Cinthya Aguero1,2,3, Neus Rabaneda-Lombarte1,2,3

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单胺氧化酶-B (MAO-B) 在阿尔茨海默病 (AD) 和相关痴呆症 (ADRD) 的反应性星球细胞中被上调. MAO-B可以识别神经毒性星体细胞,并作为预测神经退行症的PET成像标.

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科学领域:

  • 神经科学是一个神经科学.
  • 神经病理学神经病理学
  • 分子生物学分子生物学

背景情况:

  • 反应性星化在阿尔茨海默病 (AD) 和与AD相关的痴呆症 (ADRD) 中是复杂的.
  • 之前的单核RNA测序确定了AD中的天体细胞异质性和标记物.
  • 单胺氧化酶-B (MAO-B) 涉及氧化应激和GABAergic抑制,并有可能作为反应性星病的PET成像生物标志物.

研究的目的:

  • 评估单胺氧化酶-B (MAO-B) 作为AD和ADRD中反应性星球细胞的标记物.
  • 调查MAO-B表达与神经退行症标志物之间的关联.

主要方法:

  • 人类脑组织中MAO-B,GFAP,YKL-40,Aβ,pTau和pTDP43的定量免疫组织化学研究来自对照组和患有AD,皮克病,PSP,CBD和FTLD-TDP的患者.
  • 同焦点和超分辨率显微镜评估MAO-B表达和定位在星球细胞.
  • 测量皮层厚度作为缩的代理.

主要成果:

  • 与对照组相比,MAO-B免疫活性在AD,CBD,皮克病和FTLD-TDP的额叶皮层和白质中显著增加.
  • MAO-B面积分数与GFAP和YKL-40正相关.
  • MAO-B主要由皮质星体表达,并局部到线粒体;它与皮质厚度负相关,独立于Aβ,pTau或pTDP43.

结论:

  • MAO-B上调可能会在AD/ADRD中识别神经毒性反应性星球细胞的一个子集.
  • MAO-B 放射性对象的结合可能会预测AD/ADRD 未来的神经退行,这需要进一步的PET-MRI 研究.