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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

Giovanna Carello-Collar1, João Pedro Ferrari-Souza1, Marco Antônio De Bastiani1

  • 1Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil.

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概括
此摘要是机器生成的。

一种特定的reelin基因变异,RELN rs802787,似乎通过减少tau病变来保护阿尔茨海默病 (AD),特别是在粉样β水平高的个体中. 这一发现为晚期发病的AD提供了潜在的新治疗点.

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科学领域:

  • 神经科学是一个神经科学.
  • 遗传学 遗传学 是一个
  • 生物化学 生物化学

背景情况:

  • 一种罕见的reelin基因变异 (RELN-COLBOS突变) 之前已经证明了对阿尔茨海默氏症 (AD) 病理的抵抗力.
  • 常见的reelin基因单核酸多态 (SNPs) 对零星晚发性阿尔茨海默病 (LOAD) 的保护作用仍未得到研究.

研究的目的:

  • 评估RELN SNP对AD病理生理学和LOAD认知衰退的影响.
  • 为了确定RELN变异是否会对粉样蛋白-β (Aβ) 和积累产生弹性.

主要方法:

  • 从阿尔茨海默病神经成像计划 (ADNI) 队列中分析了189人.
  • 评估RELN SNPs,Aβ和tau正子发射断层扫描 (PET) 成像,脑脊液 (CSF) 生物标志物,APOEε4状态和认知测试 (CDRSB,MMSE).
  • 线性回归和混合效应模型被用来研究RELN,Aβ,tau和认知衰退之间的关联.

主要成果:

  • RELN rs802787 SNP显著地保护了Aβ驱动的病理,特别是在叶.
  • RELN rs802787运营商显示,与APOEε4.4相关的tau负担减少.
  • 这种对tau的保护作用在具有β-粉样蛋白但没有tau病理 (A+T-) 的个体中观察到,导致认知能力下降的速度较慢.

结论:

  • 该RELN rs802787变种赋予抗抗Aβ驱动的tau病理和LOAD中的认知恶化.
  • 瑞林信号调节陶积累,并可能减少APOEε4对陶负担的影响.
  • RELN代表了阿尔茨海默病的有前途的治疗标.