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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: Pathogenesis01:23

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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 Infection01:26

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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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Defense Against Bacterial Pathogens01:31

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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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Mouse Footpad Inoculation Model to Study Viral-Induced Neuroinflammatory Responses
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基础科学和病原发生学

Mark He1, Sean R Jacobson2, Rebecca A Betensky3

  • 1New York University (NYU) Grossman School of Medicine, New York City, NY, USA.

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PubMed
概括
此摘要是机器生成的。

较高的中性粒细胞与淋巴细胞比率 (NLR),一种炎症标志物,与阿尔茨海默病和相关痴呆症 (AD/ADRD) 的风险增加有关. 这一发现基于一项大型电子健康记录研究,强调了外周炎症在ADRD发展中的重要性.

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科学领域:

  • 神经科学是一个神经科学.
  • 免疫学 免疫学 免疫学
  • 老年学是指老年学的学科.

背景情况:

  • 中性粒细胞与阿尔茨海默病 (AD) 病理学有关.
  • 中性粒细胞与淋巴细胞的比率 (NLR) 表明中性粒细胞介导的炎症,并与痴呆风险有关.
  • 之前关于NLR和痴呆风险的研究使用了小队列.

研究的目的:

  • 在大量人群中调查NLR与痴呆风险之间的关联的概括性.
  • 利用电子健康记录 (EHR) 数据进行全面分析.

主要方法:

  • 分析了287985名患者 (2011-2023) 的电子病历数据.
  • 使用因果特异性考克斯回归来评估NLR与AD/ADRD发病率之间的关联.
  • 根据人口和临床混因素进行调整,死亡作为审查事件.
  • 员工累积发病率函数 (CIF) 曲线用于随时间的风险评估.

主要成果:

  • 在日志转换的NLR和ADRD风险之间发现了积极和独立的关联 (HR = 1.160).
  • 观察到NLR和AD/ADRD风险之间显著增加的关系.
  • 亚组分析证实了显著的关联,特别是西班牙裔患者的风险更高.

结论:

  • 升高的NLR与未来AD/ADRD的风险增加有关.
  • 这些发现强调了外周炎症在阿尔茨海默病理学中的作用.
  • 需要进一步的研究来阐明将中性粒细胞生物学与AD联系起来的机制.