...
首页> 外文期刊>Clinical and diagnostic laboratory immunology >Systemic and Cutaneous Mucus Antibody Responses of Channel Catfish Immunized against the Protozoan Parasite Ichthyophthirius multifiliis
【24h】

Systemic and Cutaneous Mucus Antibody Responses of Channel Catfish Immunized against the Protozoan Parasite Ichthyophthirius multifiliis

机译:针对原生动物寄生虫多丝鱼的免疫的Channel鱼的全身和皮肤粘液抗体反应。

获取原文
           

摘要

Fish acquire protective immunity against the ciliated protozoan parasite Ichthyophthirius multifiliis following sublethal infection or inoculation with I. multifiliis immobilization antigens (i-antigens). In both cases, parasite-immobilizing antibodies have been identified in sera and mucosal secretions. To investigate the kinetics of this immune response, antibody levels were determined by enzyme-linked immunosorbent assay (ELISA) in the sera and cutaneous mucus of channel catfish (Ictalurus punctatus) that were either infected with parasites or given a single injection of purified i-antigen (5.0 μg/fish) in Freund's incomplete adjuvant. At 5 weeks, infected and inoculated fish had a mean serum (1:80 dilution) antibody absorbance (A405) value of 0.54 ± 0.17 and 0.35 ± 0.03, respectively, which were significantly higher (α = 0.05) than the pretreatment serum (1:80 dilution) antibody absorbance value of 0.24 ± 0.05. At 14 weeks, mean serum (1:80 dilution) ELISA absorbance values in the teo groups of fish increased to 0.79 ± 0.30 and 0.71 ± 0.24, respectively. In both groups of fish, antibody levels in cutaneous mucus (undiluted) were much lower than those in sera. Infected fish had detectable mucus (undiluted) antibody levels from 3 to 9 weeks, with the highest mean value (0.30 ± 0.07) occurring at 7 weeks. Although individual inoculated fish produced serum antibody absorbance values comparable to those seen in infected fish, the mean mucus antibody values in this group did not rise above pretreatment levels. I. multifiliis infection induced a transient mucosal antibody response that coincided with the resolution of infection. Whether elicited by infection or intraperitoneal injection of i-antigen, the serum and mucus antibody responses of channel catfish immunized against I. multifiliis did not occur synchronously.
机译:亚致死性感染或接种 I后,鱼对纤毛的原生动物寄生虫具有保护性免疫。多丝固定抗原(i-抗原)。在这两种情况下,已在血清和粘膜分泌物中鉴定出了固定寄生虫的抗体。为了研究这种免疫反应的动力学,通过酶联免疫吸附测定(ELISA)测定了感染或寄生虫的given鱼( Ictalurus punctatus )的血清和皮肤黏液中的抗体水平在弗氏不完全佐剂中单次注射纯化的i抗原(5.0μg/鱼)。在第5周时,感染和接种的鱼的平均抗体吸收率( A 405 )值(1:80稀释)分别为0.54±0.17和0.35±0.03,显着高于预处理血清(1:80稀释)的抗体吸光度值0.24±0.05(α= 0.05)。在第14周时,鱼的teo组的平均ELISA(1:80稀释度)ELISA吸光度值分别增加到0.79±0.30和0.71±0.24。在两组鱼类中,皮肤粘液(未稀释)中的抗体水平均远低于血清中的抗体水平。受感染的鱼在3至9周内可检测到的粘液(未稀释)抗体水平,在7周时出现最高平均值(0.30±0.07)。尽管单独接种的鱼产生的血清抗体吸收值可与感染鱼中观察到的值相提并论,但该组中的平均粘液抗体值未超过预处理水平。我multifiliis 感染诱导了短暂的粘膜抗体反应,与感染的消退相吻合。无论是由于感染还是腹膜内注射i抗原引起的,针对 I免疫的channel鱼的血清和粘液抗体反应。 multifiliis 没有同步发生。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号