3种免疫途径对嗜水气单胞菌灭活疫苗保护作用的影响Influence of Three Means of Immunization on Protection of Siniperca chuatsi Caused by Killed Aeromonas hydrophila Vaccine
刘雨果,潘厚军,石存斌,吴淑勤
摘要(Abstract):
应用间接ELISA方法,研究经嗜水气单胞菌疫苗浸泡、口服、注射免疫后鳜皮肤、肠道黏液和血清中抗体的变化关系,揭示鳜对3种免疫途径的免疫应答效果。结果显示:黏液抗体产生快(7 d达到峰值),但持续时间短,抗体水平低(213);血清抗体产生慢(28 d方达峰值),但持续时间长,抗体水平高(225)。不同方式免疫鳜后均产生远高于对照组的抗体滴度(P<0.05)。注射组产生的抗体水平高(225),免疫保护率最理想(70.6%);口服组相对另两个实验组,其抗体峰值(215)和免疫保护率(41.2%)均较低;浸泡组在皮肤黏液产生水平和溶菌酶含量方面,产生较好的免疫效应,分别为213和178μg/mL,但相对保护率仅为47.1%,低于注射组的70.6%。浸泡和口服组可诱发局部黏膜免疫,在抗体动态变化方面表现出相似的规律且峰值时间早于注射组。初步推断浸泡和口服可以直接刺激鱼体黏膜组织产生局部的特异性抗体。
关键词(KeyWords): 鳜;嗜水气单胞菌;浸泡免疫;黏液抗体
基金项目(Foundation): 现代农业产业技术体系建设专项资金"大宗淡水鱼类产业技术体系"(nycytx-49-14)
作者(Author): 刘雨果,潘厚军,石存斌,吴淑勤
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