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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

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

Marla A Frick1, Jennifer L Woodruff1, Yair M Caudillo1

  • 1University of South Carolina School of Medicine, Columbia, SC, USA.

Alzheimer's & dementia : the journal of the Alzheimer's Association
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PubMed
概括
此摘要是机器生成的。

素的降低调节会损害前额叶皮层.

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科学领域:

  • 神经科学是一个神经科学.
  • 神经免疫学 神经免疫学

背景情况:

  • 基础前脑胆协系统 (BFCS) 与阿尔茨海默氏症 (AD) 病理学有关.
  • 改变的 afferent 调节,包括素/海波克莱丁系统,可能会影响AD.的BFCS脆弱性.
  • 以前的研究表明,素调节了AD相关大脑区域的胆固醇信号传递和神经炎症.

研究的目的:

  • 在免疫挑战期间,研究素在前额叶皮质 (PFC) 中调节胆固醇反应中的作用.
  • 为了测试这种假设,即素降低调节会在脂聚糖 (LPS) 给药后破坏PFC胆固醇信号传递.

主要方法:

  • 病毒载体被用来降低雌性大鼠侧向下丘脑 (LH) 中的素调节.
  • 在PFC中植入了一个微透析探头,随后进行了腹腔内LPS注射,以模拟免疫反应.
  • 在PFC透析剂中,在与食物配对的刺激过程中,使用高性能液体染色学测量了乙胆水平.

主要成果:

  • 对照大鼠表现出增加的PFC乙胆释放作为对食物配对刺激的反应.
  • 素的降低调节,加上LPS注射,显著破坏了PFC中这种正常的胆固醇反应.
  • 这些发现表明,素对于PFC中适当的神经化学和神经免疫反应至关重要.

结论:

  • 素在雌性大鼠PFC中调节神经炎症和胆功能方面发挥着重要作用.
  • 减少素信号传递会加剧神经炎症效应,并损害对免疫挑战的胆固醇反应.
  • 与年龄和AD相关的素下降可能会通过神经炎症途径导致BFCS退化.