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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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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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基础科学和病原发生学

Zeynep Sarica1, Kevin P Kotredes1, Alaina M Reagan1

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概括
此摘要是机器生成的。

结合人类阿尔茨海默氏症风险基因和暴露的新型小鼠模型更好地模仿晚发性阿尔茨海默氏症 (LOAD). 这些模型显示了类似于人类LOAD的大脑变化,有助于生物标志物和治疗点的发现.

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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.
  • 毒理学 毒理学 毒理学

背景情况:

  • 目前的小鼠模型不足以反映晚发性阿尔茨海默病 (LOAD) 的遗传复杂性和临床变异性.
  • 甲基基酸缩酶 (MTHFR) 677C>T变体和环境因素,如暴露,都与LOAD易感性有关.
  • 开发改进的模型对于推动LOAD临床前治疗开发至关重要.

研究的目的:

  • 为了生成和评估包含人类LOAD风险等位基因和环境侮辱的新型小鼠模型.
  • 评估这些模型在总结人类LOAD病理和分子特征的关键方面的有用性.
  • 为了确定潜在的生物标志物和LOAD的治疗目标.

主要方法:

  • 对于人性化的MTHFR*677C>T,阿贝塔,APOEe4和Trem2*R47H等位基因具有同胞性的LOAD2.Mthfr*677C>T小鼠的生成.
  • 暴露老年小鼠在饮用水中的三氧化,随后进行纵向行为,生物识别和终点组织分析 (转录学,蛋白学,神经病理学).
  • 使用LC-ICP-MS.评估通过尿液特异化排毒.

主要成果:

  • MTHFR*677C>T变异导致酶活性降低和血中同型半氨酸水平升高.
  • 年龄较大的LOAD2.Mthfr*677C>T小鼠表现出与人类AD显著一致的大脑转录和蛋白质组特征.
  • 暴露进一步增强了转录特征与人类AD的对齐,DMA是主要的尿物种.

结论:

  • 变种Mthfr*677C>T和暴露改变了大脑的分子形状,与人类的LOAD相关.
  • 这些修改后的小鼠模型在捕捉人类LOAD的复杂性方面具有实用性.
  • 该研究支持使用这些模型来发现LOAD生物标志物和治疗点.