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相关概念视频

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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Urinary Tract Infection II: Pathophysiology01:25

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Stages of infection describe what happens to a susceptible host once a pathogen invades the human body. The stages of infection are incubation, prodromal, illness, stage of decline, and convalescence. The incubation stage is the period from exposure to a pathogen until symptoms start. The infected person is unaware of impending illness as the pathogens grow and multiply within the body. The duration may vary depending on the type of infection. The incubation period of measles averages ten to...
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基础科学和病原发生学

Christopher Lee1, Stefan Wendt1, Ada J Lin1

  • 1University of British Columbia, Vancouver, BC, Canada.

Alzheimer's & dementia : the journal of the Alzheimer's Association
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PubMed
概括
此摘要是机器生成的。

这项研究使用了人类多能干细胞衍生的神经圈来建模阿尔茨海默病 (AD) 并调查阿波利波蛋白E (APOE) 变体的作用. 结果显示,APOE ε2提供了对粉样β诱导的神经退行症的保护,突出了其治疗潜力.

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科学领域:

  • 神经科学是一个神经科学.
  • 遗传学 是一个遗传学.
  • 干细胞生物学 干细胞生物学

背景情况:

  • 阿尔茨海默氏病 (AD) 是一种神经退行性疾病,其中阿波利波蛋白E (APOE) 基因多态化是关键的危险因素.
  • APOE ε4等位基因增加了AD风险,而 ε2和 ε3基督城突变提供了保护.
  • 了解APOE在AD病变发生中的作用对于开发疗法至关重要.

研究的目的:

  • 研究不同阿波利波蛋白E (APOE) 变异对阿尔茨海默病 (AD) 病理学的影响.
  • 为了验证人类多能干细胞 (hiPSC) 衍生的3D神经圈模型,用于研究AD和APOE功能.

主要方法:

  • 生成由hiPSC衍生的神经圈,包含具有各种APOE基因型 (ε2, ε3, ε4, ε3Christchurch) 的神经元,星细胞和微质细胞.
  • 暴露在神经圈的慢性寡合氨基胺β治疗诱导AD类病理.
  • 评估神经元活动和退化,以应对粉样β暴露.

主要成果:

  • APOE ε2 变异显示神经元活动的延迟下降相比 ε4 在粉样β压力下.
  • 在粉胺β治疗后,ApoE表达增加.
  • 观察到的抗药性模式反映了自然的AD抗药性,有或没有微质细胞.

结论:

  • 验证了一种新的hiPSC衍生神经圈模型用于研究AD和APOE.
  • 在基于人类细胞的模型中证明了APOE变体的差异性神经保护作用.
  • 该模型系统显示了未来AD药物发现和机制研究的前景.