摘要
目的寻求特异性强、敏感性高的旋毛虫病诊断抗原。方法以旋毛虫新生幼虫期特异性T668基因在E.coli高效表达的重组蛋白为抗原,分别以兔、猪和健康者血清及旋毛虫病阳性血清为一抗,以辣根过氧化物酶(HRP)标记的山羊抗兔IgG、山羊抗猪IgG和山羊抗人IgG为二抗,建立检测旋毛虫抗体的间接ELISA方法,并以旋毛虫肌幼虫排泄-分泌(ES)抗原作为检测对照。结果以T668重组蛋白为抗原,对兔、猪和人旋毛虫病血清进行检测,阳性检出率为100%,且敏感性高(0.016μg/孔),与ES抗原检测结果完全一致。结论T668重组抗原有望替代ES抗原检测旋毛虫抗体。
Objective To study the specificity, sensitivity of diagnostic antigen for Trichinella spiralis(T. s). Methods T668 recombinant protein from highly efficient expression of newborn larvae stage-specific gene of T. s in E. coli as diagnostic antigen. By using negative and positive sera from rabbit, pig, human as the first antibody, and goat-anti-rabbit IgG, goat-anti-pig IgG, goat-anti-human IgG labeled with HRP as the secondary antibody, indirect ELISA method was established for detecting anti-T.s antibody, while excretory-secretory (ES) antigen of T.s muscle larvae was used as control. Results Sera from rabbit, pig and human were detected by T668 recombinant protein as antigen, which showed a positive rate of 100% with 0.016 μg/well. There was no difference on the results between the T668 recombinant antigen and the ES antigen for diagnosing T. s-infection. Conclusion The T668 recombinant antigen is promising in substituting ES antigen in the detection of anti-T. s antibody.
出处
《中国寄生虫学与寄生虫病杂志》
CAS
CSCD
北大核心
2005年第3期143-145,共3页
Chinese Journal of Parasitology and Parasitic Diseases
基金
国家自然科学基金(NSFC-30170709)
中法先进计划项目(9612)~~
关键词
旋毛虫
重组蛋白
新生幼虫期特异性基因
间接ELISA
Trichinella spiralis
Recombinant protein
Newborn larvae (NBL) stage-specific gene
Indirect ELISA
