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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.
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Urinary Tract Infection II: Pathophysiology01:25

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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

Hyun Woong Roh1, Sunwoo Yoon1, Homin Song1

  • 1Ajou University School of Medicine, Suwon, Gyeonggido, Korea, Republic of (South).

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概括
此摘要是机器生成的。

阿尔茨海默病 (AD) 患者的细胞昼夜节律障碍与神经退行和认知衰退相关. 这些细胞周期偏差可以作为阿尔茨海默病和与衰老相关的神经退行变化的早期生物标志物.

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科学领域:

  • 神经科学是一个神经科学.
  • 时间生物学 时间生物学
  • 生物标志物发现发现

背景情况:

  • 循环节律的改变在阿尔茨海默病 (AD) 和其他神经退行性疾病中很常见.
  • 在患者衍生的纤维细胞中,ex-vivo细胞昼夜周期及其偏离24小时的作用尚不清楚.

研究的目的:

  • 调查细胞昼夜周期指标 (周期长度和24小时的偏差) 与AD生物标志物之间的关联.
  • 探索细胞昼夜节律与神经退行变化,认知状态和认知投诉患者的临床进展之间的关系.

主要方法:

  • 从BICWALZS队列中分析了135名患有认知投诉的老年人.
  • 在患者衍生纤维细胞中测量细胞昼夜周期,使用Bmal1-luciferase试验.
  • 评估AD生物标志物 (血pTau-217,NfL,GFAP) 和神经成像 (MRI),以及认知测试和生存分析.

主要成果:

  • 细胞昼夜周期与毛病,神经损伤和炎症生物标志物相关.
  • 较长的时间与AD相关大脑区域的灰质密度降低有关.
  • 与年龄,神经退行,认知衰退和记忆/语言障碍相关的24小时周期偏差.
  • 较长的细胞昼夜周期预测了AD更快的临床进展.

结论:

  • 细胞昼夜周期偏差反映了与衰老相关的神经退行和认知障碍.
  • 细胞昼夜指标显示,AD和与衰老相关的神经退行症的生物标志物具有潜力.
  • 需要进一步的研究来验证这些发现并探索临床应用.