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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

Caroline Matos Silva1, Alberto Fernando Oliveira Justo2, Renata Elaine Paraizo Leite1

  • 1University of São Paulo Medical School, São Paulo, São Paulo, Brazil.

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此摘要是机器生成的。

临主导的与年龄相关的TDP-43脑病变神经病理变化 (LATE-NC) 与更频繁的神经病理病变有关. 只有莱维体病理学在调整后显示出与LATE-NC的独立关联.

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科学领域:

  • 神经病理学神经病理学
  • 老年医学 老年医学
  • 神经退行性疾病 神经退行性疾病

背景情况:

  • 临主导的与年龄相关的TDP-43脑病变神经病理变化 (LATE-NC) 是老年人痴呆的常见原因.
  • 晚期NC通常与其他大脑病理共同发生,使诊断和理解复杂化.
  • 调查这些共同发生对于理解痴呆症病因至关重要.

研究的目的:

  • 确定LATE-NC.患者中各种神经病理病变的发生频率.
  • 检查LATE-NC和其他神经病理变化之间的关联.
  • 在共存的病理中识别LATE-NC的独立预测因子.

主要方法:

  • 从老化研究生物银行对1,434名巴西人的横截面分析.
  • 对神经病理学数据的评估,包括LATE-NC,布拉克阶段 (PD和NFT),CERAD,大脑粉样血管病变和氨酸动脉硬化.
  • 顺序逻辑回归和调整模型来评估LATE-NC与其他病变之间的关联.

主要成果:

  • 较高的LATE-NC阶段与大多数神经病理病变的患病率增加相关.
  • 晚期NC与NFT的高级布拉克,PD的布拉克,CERAD,大脑粉样血管病变和氨酸动脉样硬化症的更高频率有关.
  • 经过调整的分析显示,仅在PD阶段的LATE-NC和高级Braak之间存在显著的独立关联 (OR = 1.46).

结论:

  • 增加的神经病理损伤负担与LATE-NC.的更高阶段有关.
  • 勒维体病理学 (PD的Braak) 是唯一一个与LATE-NC.独立相关的神经病理学发现.
  • 这些发现突出了老化大脑和痴呆症病理的复杂相互作用.