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Factors Affecting the Risk of Infection01:26

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The hosts' susceptibility to infection depends on several factors. The integrity of the skin and mucous membranes helps protect the body against microbial attacks. When the skin is altered, the chance of infection, limb loss, and even death increases.
The integrity and count of the white blood cells help the body resist pathogens and fight infection. When impaired, it reduces the body's resistance to pathogens. The acidic pH levels of the gastrointestinal, genitourinary tracts, and skin...
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A Mouse Model for the Transition of Streptococcus pneumoniae from Colonizer to Pathogen upon Viral Co-Infection Recapitulates Age-Exacerbated Illness
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资源调节发育转变,但不适应昆虫系统中共感染后的感染耐受性.

Nora K E Schulz1, Danial Asgari1, Siqin Liu1

  • 1Department of Biological Sciences, Vanderbilt University, Nashville, Tennessee, USA.

Molecular ecology
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概括

仅靠能量分配无法解释寄生虫如何影响宿主生存. 与格雷加林寄生虫的同时感染会影响肠道健康和免疫基因表达,减少不论饮食的生存率.

关键词:
显而易见的竞争.主体寄生虫的相互作用免疫病理学 免疫病理学寄生虫促进寄生虫的促进.在宿主生态中.

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科学领域:

  • 生态生态学 生态生态学
  • 进化生物学 进化生物学
  • 免疫学 免疫学 免疫学

背景情况:

  • 宿主能量资源对于控制寄生虫感染和免疫防御至关重要.
  • 同感染对宿主能量分配和免疫反应的影响仍然不完全理解.

研究的目的:

  • 研究饮食和与两个自然寄生虫的共同感染如何影响面粉甲虫 (Tribolium confusum) 的能量分配,代谢和免疫反应.
  • 确定能量分配是否足以解释共感染宿主中的感染结果.

主要方法:

  • 在试验中感染单一和并发感染的面粉甲虫的饮食操纵.
  • 转录组分析 (mRNA-seq) 来评估基因表达变化.
  • 现型检测用于评估宿主发育,免疫反应和生存.

主要成果:

  • 格雷加林寄生虫以饮食依赖的方式改变了宿主的能量环境和青少年发育时间.
  • 格雷加林感染刺激了一组独特的免疫基因,并导致肠道损伤,独立于饮食.
  • 感染格雷加林的宿主表现出降低的生存率,无论饮食状况或急性细菌感染耐药性如何.

结论:

  • 仅仅是能量分配不足以充分解释免疫学对共感染结果的贡献.
  • 对宿主-寄生虫相互作用的机制性见解对于预测跨生物层次的共感染影响至关重要.