Histopathological analysis and the immune related gene expression profiles of mandarin fish (Siniperca chuatsi) infected with Aeromonas hydrophila
文献类型： 外文期刊
作者： Chen, Nan 1 ; Jiang, Jingjing 1 ; Gao, Xiaojian 1 ; Li, Xixi 1 ; Zhang, Yue 1 ; Liu, Xiaodan 1 ; Yang, Hui 1 ; Bing, Xuwe 1 ;
作者机构： 1.Yangzhou Univ, Coll Anim Sci & Technol, Yangzhou 225009, Jiangsu, Peoples R China
2.Chinese Acad Fishery Sci, Freshwater Fisheries Res Ctr, Key Lab Freshwater Fisheries & Germplasm Utilizat, Minist Agr, Wuxi 214081, Peoples R China
关键词： Mandarin fish; Aeromonas hydrophila; Histopathology; Immune related genes
期刊名称：FISH & SHELLFISH IMMUNOLOGY （ 影响因子：4.581； 五年影响因子：4.851 ）
ISSN： 1050-4648
年卷期： 2018 年 83 卷
页码：
收录情况： SCI
摘要： Hemorrhagic septicemia of mandarin fish (Siniperca chuatsi) was mainly caused by Aeromonas hydrophila which was an opportunistic pathogen. In recent years, the disease has caused tremendous economic loss with high morbidity and mass mortality in the mandarin fish breeding industry. Histopathological analysis and the immune related gene expression profiles of mandarin fish (S. chuatsi) infected with A. hydrophila were investigated in this study. Transmission electron microscopy (TEM) images showed that the cells of A. hydrophila densely covered with a mass of fimbriae. Histopathological analysis revealed that inflammation, vacuolization and extensive necrosis existed in the gill, liver, spleen and head kidney of the diseased fish. Quantitative real-time PCR was performed to measure mRNA expression levels for six immune related genes in mandarin fish after A. hydrophila infection. The transcriptional analysis of these immune related genes demonstrated that the expression levels of major histocompatibility complex class II (MHC II), T cell receptor alpha (TCR alpha), tumor necrosis factor alpha (TNF alpha), CC chemokine 3, interleukin 8 (IL-8) and Hepcidin were strongly up-regulated in spleen and head kidney of mandarin fish post-infection. These results will contribute to further study on the pathogenesis and host defensive system in A. hydrophila infection.
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