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相关概念视频

Synteny and Evolution02:31

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John H. Renwick first coined the term “synteny” in 1971, which refers to the genes present on the same chromosomes, even if they are not genetically linked. The species with common ancestry tend to show conserved syntenic regions. Therefore, the concept of synteny is nowadays used to describe the evolutionary relationship between species.
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Tuberculosis, or TB, is a bacterial infectious disease caused by Mycobacterium tuberculosis. While its primary impact is on the lungs, leading to pulmonary tuberculosis, it can also affect various other organs, a condition referred to as extrapulmonary tuberculosis.
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Tuberculosis (TB) is a contagious infection primarily affecting the lung parenchyma but which can also affect other body parts. TB can be classified based on disease development, presentation, and the affected anatomical site.
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Tuberculosis, often called TB, is a contagious illness primarily caused by Mycobacterium tuberculosis. It mainly affects the lung parenchyma but can also impact other body parts.
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野生黑猩猩的麻风病

Kimberley J Hockings1,2, Benjamin Mubemba3,4, Charlotte Avanzi5,6,7,8

  • 1Centre for Ecology and Conservation, University of Exeter, Penryn, UK.

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|October 14, 2021
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在西非野生黑猩猩中发现了麻风病 (由Mycobacterium leprae引起),这表明这种细菌可能比以前认为的更多野生动物中传播. 这一发现突出了人类和已知的动物宿主之外的疾病潜在的新存储库.

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科学领域:

  • 动物医学
  • 灵长类动物健康
  • 感染性疾病

背景情况:

  • 人类是麻风菌的主要宿主,
  • 漏事件已经在维护宿主如鱼和红松鼠中确立了麻风.
  • 已经记录了被囚禁的非人类灵长类动物自然获得的麻风病,但感染的起源尚不清楚.

研究的目的:

  • 在野外的黑猩猩群体中研究类似麻风的病变.
  • 在受影响的黑猩猩中识别病原体及其遗传特征.
  • 了解野生灵长类动物群体中Mycobacterium leprae的传播潜力.

主要方法:

  • 在几内亚比绍和科特迪瓦对野生黑猩猩种群的纵向监测.
  • 对便和尸体解剖样本进行Mycobacterium leprae的查.
  • 黑猩猩M. leprae菌株与已知的人类和动物菌株的基因组比较

主要成果:

  • 在两个野生西游黑猩猩群体中观察到类似麻风的病变和疾病进展.
  • 在受影响的黑猩猩中,Mycobacterium leprae被证实是病原体.
  • 黑猩猩M. leprae菌株属于罕见的基因型 (4N/O和2F),与常见的人类和动物菌株不同.

结论:

  • 野生黑猩猩容易患上麻风, 呈现与晚期疾病相符的临床症状.
  • 在野生黑猩猩群体中流传Mycobacterium leprae, 这表明野生动物更广泛地参与了麻风传染.
  • 这些发现表明人类或未知的环境来源对野生动物的M. leprae的潜在暴露.