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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.
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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 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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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

Danielle Luu1, Koral V Wheeler1, Maxwell W Hand1

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此摘要是机器生成的。

在非西班牙裔黑人个体中发现了与大脑中陶积累相关的遗传变异. 这一发现可能会改善对不同人群中阿尔茨海默病风险的理解.

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科学领域:

  • 遗传学 是一个遗传学.
  • 神经成像是一种神经成像.
  • 阿尔茨海默氏症疾病研究研究

背景情况:

  • 遗传变异会影响阿尔茨海默病 (AD) 的风险和进展.
  • 特定的基因对AD神经病理学的影响,特别是tau积累,在不同的种族群体中仍然不清楚.

研究的目的:

  • 在三个民族种族群体进行全基因组关联研究 (GWAS).
  • 为了识别与脑定子发射断层扫描 (PET) 信号相关的遗传变异,在中间叶 (MTL).

主要方法:

  • 分析了994名参与者的数据 (西班牙裔,非西班牙裔黑人 (NHB),非西班牙裔白人 (NHW)) 来自健康和衰老大脑研究-健康差异 (HABS-HD).
  • 使用PI-2620 PET成像来计算MTL中的tau标准化吸收值比率 (SUVR).
  • 在每个民族种族群体内执行GWAS,控制共变量和人口结构.

主要成果:

  • 确定了11种变异,在种族群体中达到暗示意义 (p < 1.00x10 ^ -5).
  • 在NHB样本中发现了与与海马功能,代谢调节,脂质和炎症相关的基因相关的特定SNP,所有这些都与AD风险有关.
  • 在西班牙裔和NHW样本中发现了单独的变异,但这些与已知的AD因素无关.

结论:

  • 确定了与NHB参与者MTL tau积累相关的潜在遗传变异,这些变异位于以前与AD风险因素相关的基因中.
  • 这些发现可能会增强对跨种族群体痴呆风险的理解.
  • 结果将指导未来对个性化医学和AD的精准医疗保健的研究.