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Infection01:20

Infection

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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.
The chain begins with pathogens: bacteria, viruses, fungi, prions, or parasites such as protozoa helminths. These can be present on the skin as transient or resident flora, or they can be acquired from the environment. Identifying and treating the type of infection and...
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Urinary Tract Infection II: Pathophysiology01:25

Urinary Tract Infection II: Pathophysiology

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The pathophysiology of urinary tract infections (UTIs) encompasses several progressive stages, beginning with bacterial colonization and culminating in potential systemic complications if untreated. UTIs are primarily initiated by bacteria, such as Escherichia coli, which often originate from the gastrointestinal tract and migrate to the urinary system through the periurethral area. This migration can occur via several routes, including improper hygiene practices, sexual activity, or...
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Cystic fibrosis (CF), an autosomal recessive disorder, significantly affects the function of exocrine glands. This genetically inherited disease is characterized by the production of thick and sticky mucus, which can severely affect various organs and systems in the body.
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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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The human immune system is a complex network of cells, tissues, and organs that work together to defend the body against bacterial infections. It consists of various immune cells, each playing a specific role in the defense mechanism.
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基础科学和病原发生学

Xinyi Zhang1, Siyan Zhong1, Shuai Zhao1

  • 1Department of Neurology, the Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China.

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概括
此摘要是机器生成的。

慢性大脑低 perfusion (CCH) 通过增加阿斯巴酸内酶 (AEP) 和PP2A的I加速阿尔茨海默病的tau病理. 这项研究研究了CCH增强的传播和酸化的机制.

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科学领域:

  • 神经科学是一个神经科学.
  • 病理学 病理学 病理学
  • 生物化学 生物化学

背景情况:

  • 阿尔茨海默病 (AD) 的发病因子是多因素的,神经纤维状结 (NFT) 是一个关键的病理特征.
  • 已知慢性大脑低 perfusion (CCH) 在tau病理之前并可能加速,但潜在的机制尚未完全理解.

研究的目的:

  • 研究CCH对的传播和酸化的影响.
  • 阐明阿斯巴酸内酶 (AEP) 和PP2A在CCH诱导的病理中的作用.

主要方法:

  • 图-HEK293细胞接受了氧-葡萄糖剥夺 (OGD),以模仿CCH条件并评估图聚合.
  • PS19小鼠接受了tau PFF注射和单边常见动脉阻塞 (UCCAO),以模拟CCH并检查tau病理.
  • 西方涂抹和免疫光被用来分析病理,AEP,IPP2A,BBB蛋白和微质激活.

主要成果:

  • 在tau-HEK293细胞中,OGD治疗增加了tau聚合物,AEP和I2PP2A.
  • 在PS19小鼠中,CCH通过增加不溶性tau酸化来增强tau病理,以提高AEP和I2A水平.
  • CCH改变了AEP和IPP2A的亚细胞定位,影响了紧结蛋白,激活了微质,以及修改了基因表达特征.

结论:

  • 这些发现表明,AEP和I2PP2A参与CCH诱导的陶过酸化和传播.
  • 通过涉及AEP和I2A的机制,CCH加剧了类似阿尔茨海默病的tau病理.