感染鱼水腫病毒的魚和腸道微生物群的變化
Maria Zawisza1,2, Anna Michalik3, Barbara F Nowak4
1Department of Evolutionary Immunology, Institute of Zoology and Biomedical Sciences, Faculty of Biology, Jagiellonian University, Krakow, Poland.
Veterinary research
|January 8, 2026
概括
在鱼中,疹病毒 (CEV) 感染引发了应激反应,并显著改变了状微生物群,增加了机会性细菌. 这可能解释了CEV爆发中常见的二次感染.
科学领域:
- 水生动物卫生 水生动物卫生
- 鱼类免疫学 鱼类免疫学
- 微生物组研究 微生物组研究
背景情况:
- 水 edem 病毒 (CEV) 影响普通鱼,影响状功能和免疫反应.
- CEV感染往往导致二次细菌感染.
- 了解CEV对宿主微生物群的影响至关重要.
研究的目的:
- 调查CEV感染对鱼和肠道微生物群的影响.
- 分析与抗病毒防御,炎症和肠道屏障完整性相关的基因表达.
- 为了将观察到的变化与压力反应和组织病理学相关联.
主要方法:
- 分析CEV感染和对照科伊的和肠道微生物组合.
- 测量血液中的皮质醇和葡萄糖水平.
- 对抗病毒蛋白,细胞因子,粘膜蛋白和紧密结合蛋白的基因表达分析.
- 和肠道组织的组织病理学检查.
主要成果:
- 感染CEV诱导的应激反应 (皮质醇和葡萄糖的升高) 和病理.
- 状微生物群的显著变化,机会性细菌增加 (例如,Aeromonas,Pseudomonas).
- 微小的肠道微生物群变化,主要是后肠中的Aeromonas增加.
- 观察到差异性基因表达,包括对mxa,vig,il-1b和cldn的上调调节 7.
结论:
- 塞维病毒感染对鱼微生物群产生深远影响,可能促进二次细菌感染.
- 在CEV感染期间,压力反应的激活是明显的.
- 改变基因表达表明免疫和屏障功能的调节.
- 研究结果提供了对CEV感染鱼类二次感染背后的机制的见解.
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