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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

Sunny Kumar1,2,3, Ibai Diez1,4, Ana Claudia Amaral1,2,5

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此摘要是机器生成的。

患有阿尔茨海默氏病的神经病理变化 (ADNC) 但没有认知衰退的个体显示神经炎症减少和TNF和NF-κB通路下调. 这表明质细胞的炎症反应会影响ADNC的认知结果.

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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.
  • 病理学 病理学 病理学

背景情况:

  • 一些患有阿尔茨海默氏症神经病理变化的个体 (ADNC) 在认知上保持正常,这表明了弹性机制.
  • 了解ADNC的弹性对于识别阿尔茨海默病 (AD) 的新生物标志物和治疗点至关重要.

研究的目的:

  • 为了比较具有弹性个体 (ADNC认知正常) 和具有ADNC负载相当的痴呆症AD患者的脑部变化和基因表达特征.
  • 在AD神经病理的存在下,识别潜在的认知性分子机制.

主要方法:

  • 比较神经病理学评估和RNA-seq数据从性,痴呆的AD和对照个体的背侧前额皮层 (ROSMAP队列).
  • 利用DESeq2进行差异基因表达分析,考虑年龄,性别,批量和死后间隔.
  • 采用沃尔德测试来识别痴呆AD和弹性群体之间的差异表达基因 (DEG).

主要成果:

  • 与痴呆AD大脑相比,弹性大脑具有相当的粉样质斑块和结,但较低的tau神经线和pTau水平.
  • 弹性大脑显示激活的星球细胞和微质细胞的负担减少,随着亡,神经炎症和蛋白质酸化过程的减少.
  • 途径分析显示,TNF,JAK-STAT和NF-κB信号在弹性大脑中的下调,包括CXCL1和CXCL2的共享下调.

结论:

  • 神经细胞和突触中的异常病理性tau物种可能会触发涉及TNF和NF-κB通路的质前炎症反应.
  • 这些炎症途径在确定ADNC患者的认知命运 (痴呆症与保存认知) 中显得至关重要.