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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...
524
Cystic Fibrosis: Pathogenesis01:23

Cystic Fibrosis: Pathogenesis

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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.
CF is primarily caused by a genetic mutation in a chromosome 7 gene coding for the cystic fibrosis transmembrane conductance regulator (CFTR) protein. The most common gene mutation leading to CF is the ΔF508 mutation,...
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Pneumonia II: Pathophysiology01:29

Pneumonia II: Pathophysiology

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The pathophysiology of pneumonia involves the following steps:
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Stages of Infection01:26

Stages of Infection

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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...
64.7K
Defense Against Bacterial Pathogens01:31

Defense Against Bacterial Pathogens

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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
Phagocytes are the frontline soldiers of the immune system. They include neutrophils and macrophages. Neutrophils are the most abundant type of white blood cell and are quickly mobilized to the site of infection. Macrophages are larger cells that patrol...
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相关实验视频

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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

Tehniat Faraz Ahmed1, Zeba Haque1, Affan Ahmed1

  • 1Dow University of Health Sciences, Karachi, Sindh, Pakistan.

Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 23, 2025
PubMed
概括

这项研究确定了与胰岛素抵抗 (IR) 和阿尔茨海默氏症 (AD) 相关的微RNA. 这些microRNAs可以作为早期的生物标志物,在阿尔茨海默病的IR患者.

科学领域:

  • 生物化学 生物化学
  • 遗传学 是一个遗传学.
  • 神经科学是一个神经科学.

背景情况:

  • 阿尔茨海默病 (AD) 的病理生理学仍然不清楚,阻碍了治疗的发展.
  • 与糖尿病和代谢综合征相关的胰岛素抵抗 (IR) 与AD具有共同的风险因素,但连接机制尚不清楚.
  • 微RNA与IR和AD有关,但没有研究确定了针对这两种途径的微RNA.

研究的目的:

  • 通过生物信息学识别microRNA,同时准IR和AD通路.
  • 分析目标基因的功能注释,以揭示IR和AD之间共享的调节机制.

主要方法:

  • 利用了五种预测工具和两种实验验证数据库来识别针对关键IR基因的微RNA.
  • 进行KEGG分析并构建蛋白质-蛋白质相互作用网络以识别针对AD基因的微RNA.
  • 使用DAVID对目标基因进行功能注释,以识别常见的基因 Ontology 术语.

主要成果:

  • 确定了针对299个与AD相关的基因的微RNA,其中miR-16-5p的向最多.
  • 根据AD目标分数,miR-7-5p,let-7a-5p,let-7b-5p,miR-15b-5p,miR-16-5p,miR-17-5p和miR-424-5p的排名最高.
  • 目标基因在负调节转录,染色质重塑和细胞周期控制方面得到丰富,具有蛋白质结合和激酶活性的功能.

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Using a Bacterial Pathogen to Probe for Cellular and Organismic-level Host Responses

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结论:

  • 鉴定到的微RNAs代表了AD和IR之间的潜在病原性联系.
  • 这些microRNAs被推进行进一步研究,作为在IR患者中AD的早期生物标志物.