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相关概念视频

Size and Structure of Viral Genomes01:26

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Viral genomes exhibit remarkable diversity in size, structure, and composition, influencing their replication strategies and interactions with host cells. These genomes consist of either DNA or RNA and may be linear or circular. Additionally, they can be single-stranded or double-stranded, with each configuration affecting how the virus propagates within a host. RNA viruses, for instance, generally have smaller genomes than DNA viruses, a factor that contributes to their high mutation rates and...
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在长期治疗的艾滋病毒感染中,转录学加速年龄.

Flora Mikaeloff1, Marco Gelpi2, Alejandra Escos1

  • 1The Systems Virology Lab, Division of Clinical Microbiology, Department of Laboratory Medicine, Karolinska Institutet, Stockholm, Sweden.

Aging cell
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概括

接受抗逆转录病毒治疗 (ART) 的艾滋病毒感染者 (PWH) 的生物衰老是复杂的. 转录组学年龄估计器显示,43%的人经历了加速衰老,与炎症和免疫反应有关,而21%的人显示衰老减缓.

关键词:
生物衰老 生物衰老转录学 衰老的时钟被治疗的艾滋病毒感染者.

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科学领域:

  • 生物医学科学 生物医学科学
  • 基因组学就是基因组学.
  • 免疫学 免疫学 免疫学

背景情况:

  • 长期成功接受抗逆转录病毒疗法 (ART) 的艾滋病毒感染者 (PWH) 的生物衰老仍然不太清楚.
  • 免疫复合和病毒抑制是ART上PWH的关键因素.

研究的目的:

  • 在长期成功的ART上研究PWH中的转录组学年龄估计器 (TAE).
  • 确定与PWH中年龄加速或减速相关的临床,人口和生活方式因素.

主要方法:

  • 使用了来自哥本哈根共发病 (COCOMO) 队列的178个PWH队列,长期成功的ART.
  • 采用了TAE并分析了143个临床,人口和生活方式因素.
  • 进行了定向基于类的基因组丰富分析.

主要成果:

  • 43%的PWH表现出加速衰老 (AAP),而21%的PWH表现出减缓衰老 (DAP).
  • DAP与年龄较大,欧洲血统和tenofovir disoproxil/alafenamide fumarate使用有关.
  • AAP显示上调的炎症和免疫反应途径,而DAP显示下调的代谢过程.

结论:

  • 在成功接受ART的PWH中,生物衰老是异质的,显著比例的人经历了加速或减缓的衰老.
  • 转录组分析揭示了与PWH中加速 (炎症,免疫反应) 和减缓 (代谢) 衰老相关的明显的分子途径.
  • 了解这些衰老模式对于管理PWH的长期健康至关重要.