Effects of propolis on the immune enhancement of the formalin-inactivatedAeromonas salmonicidavaccine
文献类型： 外文期刊
作者： Liu, Shuai 1 ; Wang, Di 1 ; Cao, Yongsheng 1 ; Lu, Tongyan 1 ; Liu, Hongbai 1 ; Li, Shaowu 1 ;
作者机构： 1.Chinese Acad Fishery Sci, Heilongjiang River Fisheries Res Inst, Dept Aquat Anim Hlth, Harbin, Peoples R China
2.Shanghai Ocean Univ, Coll Fisheries & Life Sci, Shanghai, Peoples R China
3.Key Lab Aquat Anim Dis & Immune Technol Heilongji, Harbin, Peoples R China
关键词： adjuvant; Aeromonas salmonicida; gene expression profiling; propolis; vaccination
期刊名称：AQUACULTURE RESEARCH （ 影响因子：2.082； 五年影响因子：2.415 ）
ISSN： 1355-557X
年卷期： 2020 年 51 卷 11 期
页码：
收录情况： SCI
摘要： Furunculosis caused byAeromonas salmonicidais a major threat to salmonids throughout all their life stages. Vaccination againstA. salmonicidahas been shown to provide effective protection in aquaculture. The success of many vaccines relies on their association with the appropriate adjuvant to increase their immunogenicity and ensure long-term protection. In this study, the effects of vaccines using propolis as adjuvants against furunculosis in rainbow trout (Oncorhynchus mykiss) were evaluated. The parameters evaluated included the relative percent survival (RPS), the specific IgM antibody level and the expression profiles of several immune-related genes in four tissues following immunization and challenge. The results showed that the experimental vaccines containing propolis as adjuvants (ExpVacPro group) could effectively protect the experimental fish againstA. salmonicidainfection with an RPS of 89.47%. The gene expression data revealed that ExpVacPro could induce the differential expression of the pro-inflammatory cytokines, MHC class ROMAN NUMERAL ONE, T-cell markers and Ig markers in immunized fish, with higher levels in liver and spleen than in head kidney and gill. ExpVacPro initially increased the expression ofMHC IandIL8genes in related pathways, and then gradually increased the expression ofIL-1 beta andIgTgenes for about 2 weeks. During the post-vaccination challenge, the expression levels of all detected genes were up-regulated especially forCD8andIgTgenes. The specific IgM antibody titres were significantly induced following immunization and challenge. In conclusion, the results indicated that propolis could improve potency and efficacy of formalin-inactivatedA. salmonicidavaccine as adjuvants.
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