中国寄生虫学与寄生虫病杂志 ›› 1998, Vol. 16 ›› Issue (6): 411-414.

• 论著 • 上一篇    下一篇

旋毛虫机蚴抗原诱导小鼠抗日本血吸虫保护性免疫的研究

田明礼; 易新元; 曾宪芳; 曾庆仁; 彭先楚   

  1. 湖南医科大学寄生虫学教研室
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:1998-12-31 发布日期:1998-12-31

CROSS PROTECTION AGAINST SCHISTOSOMA JAPONICUM INFECTION IN MICE IMMUNIZED WITH TRICHNELLA SPIRALIS MUSCLE LARVA ANTIGEN *

Tian Mingli; Yi Xingyuan; Zeng Xianfang; Zeng Qingren; Peng Xianchu   

  1. Department of parasitology; Hunan Medical University; Changsha 410078
  • Received:1900-01-01 Revised:1900-01-01 Online:1998-12-31 Published:1998-12-31

摘要: 目的:探讨旋毛虫幼虫抗原免疫小鼠对日本血吸虫攻击感染的交叉保护作用。方法:用4种不同的旋毛虫幼虫抗原制剂经颈部皮下多点免疫小鼠,然后用日本血吸虫尾蚴30条或100条攻击感染,攻击后45d剖杀小鼠,收集成虫、肝组织和粪便中的虫卵,并计数。结果:4种不同制剂均可诱导不同程度的保护性免疫效应,以旋毛虫幼虫匀浆上清可溶性抗原(TsSA)效果较好,减虫率为21.3%,加用福氏佐剂时,其减虫率为29.3%,肝组织和粪便中的虫卵减少率分别达48%和58.5%,平均每鼠肝组织和粪便中的虫卵EPG减少率分别为41.7%和48.9%;当抗原剂量为10000条旋毛虫并加用福氏佐剂时,其减虫率达39.6%。结论:旋毛虫抗原免疫小鼠能诱导抗日本血吸虫攻击感染的免疫效应。

关键词: 旋毛虫, 日本血吸虫, 感染, 免疫, 交叉保护作用

Abstract: AIM: To explore the cross protection against S.japonicum cercaria challenge in mice
immunized with T. spiralis larva antigen. METHODS:Groups of BALB/c mice were immunized with 4
preparations of T.spiralis larva antigen, respectively.Vaccinated mice were then challenged with
30 and 100 S.japonicum cercariae,respectively.Forty five days later,all mice were sacrificed and
examined for adult worm burden,liver and stool egg count. RESULTS: All groups of mice immunized
with 4 preparations of T. spiralis larvae antigen withou tadjuvant showed significant protection against S. japonicum. Among these antigen preparations, the soluble antigen (TsLSA ) presented highest protection with reductions in worm burden and liver and stool egg counts of 21.3% , 48.0% and 58.5% , respectively. When mice were immunized with TsLSA plus Freund’s complete adjuvant (FCA) or with double-dose of the antigen, the worm reduction rate was increased to 29.3% and 39.6% , respectively. CONCLUSION:Different preparations of T. spiralis muscle larva antigen could induce protection against S. japonicum in mice.

Key words: Schistosoma japonicum, Trichnella spiralis, immunization, cross protection