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相关概念视频

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.
Phagocytes
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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

Katherine Colcord1,2, Luohua Jiang1, Seyed Ahmad Sajjadi1,2

  • 1University of California Irvine, Irvine, CA, USA.

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PubMed
概括
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) 与老年人更快的身体衰退有关. 阿尔茨海默病神经病理变化 (ADNC) 与身体表现下降没有显著的关联.

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科学领域:

  • 神经病理学神经病理学
  • 老年学是一门学科.
  • 物理性能研究研究 物理性能研究

背景情况:

  • 阿尔茨海默氏病神经病理变化 (ADNC) 和边缘主导的与年龄相关的TDP-43脑病变神经病理变化 (LATE-NC) 在认知上呈现类似的变化.
  • 在ADNC和LATE-NC之间的物理性能差异还不太清楚.

研究的目的:

  • 调查ADNC和LATE-NC和物理性能轨迹之间的纵向关系.
  • 为了确定身体表现是否可以帮助区分ADNC和LATE-NC.

主要方法:

  • 利用了90+研究的数据,这是一项纵向衰老研究.
  • 使用步行速度,5次坐立测试 (5XSST),握力和平衡来评估身体表现.
  • 分析了脑部解剖中的神经病理变化,并采用了线性混合回归模型.

主要成果:

  • ADNC与身体表现的变化没有显著关联.
  • LATE-NC与步行速度,5XSST,握力和复合体能测量指标的更快下降显著相关.
  • 与没有LATE-NC的参与者相比,LATE-NC的参与者在所有物理指标上显示出更的下降.

结论:

  • 晚期-NC,而不是ADNC,与最老的老年人加速体力表现下降有显著的关联.
  • 尽管具有相似的认知表现,LATE-NC和ADNC的身体表现可能会有所不同.
  • 身体表现可以作为LATE-NC的生物标志物,有助于差异诊断.