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Specificities and Sensitivities of Four Monoclonal Antibodies for Typing of Borrelia burgdorferi Sensu Lato Isolates

机译:四种用于鉴定伯氏疏螺旋体分离株的单克隆抗体的特异性和敏感性

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Borrelia burgdorferi, the agent of Lyme borreliosis, is genetically more heterogeneous than previously thought. In Europe five genospecies have been described from the original B. burgdorferi sensu lato (sl): B. burgdorferi sensu stricto (ss), B. garinii, B. afzelii, B. lusitaniae, and B. valaisiana. In the United States, B. burgdorferi ss as well as B. bissettii in California and B. andersonii on the East Coast were differentiated. In Asia, B. japonica has been identified along, with B. garinii, B. afzelii, and B. valaisiana. In order to evaluate sensitivity and specificity of four species-specific monoclonal antibodies, we analyzed 210 B. burgdorferi sl isolates belonging to eight genospecies by immunoblot and confirmed genospecies by restriction fragment length polymorphism (RFLP) of rrf (5S)-rrl (23S) intergenic spacer amplicon. Monoclonal antibody H3TS had 100% sensitivity for 55 B. burgdorferi ss isolates but showed reactivity with all four isolates belonging to B. bissetii. Monoclonal antibody I 17.3 showed 100% specificity and sensitivity for 45 B. afzelii isolates. Monoclonal antibody D6 was 100% specific forB. garinii but missed 1 of 64 isolates (98.5% sensitivity). Monoclonal antibody A116k was 100% specific forB. valaisiana but was unreactive with 4 of 24 isolates (83.5% sensitivity). Genetic analysis correlated well with results of reactivity and confirmed efficacy of the phenotypic typing of these antibodies. Some isolates showed atypical RFLP. Therefore, both phenotypic and genotypic analyses are needed to characterize newBorrelia isolates.
机译:莱姆病(Berreliosis)的病原体在基因上比以前认为的更加异质。在欧洲,从原始的 B中已经描述了五种基因。 burgdorferi sensu lato(sl): B。 burgdorferi sensu stricto(ss), B。 garinii,B。afzelii,B。lusitaniae B。瓦莱州(Valaisiana)。在美国, B。 burgdorferi B。 bissettii 在加利福尼亚和 B。东海岸的安德森氏菌有所区别。在亚洲, B。粳稻 B一起被鉴定。 garinii,B。afzelii B。瓦莱州(Valaisiana)。为了评估四种物种特异性单克隆抗体的敏感性和特异性,我们分析了210B。通过免疫印迹鉴定属于8个基因型的burgdorferi sl分离株,并通过 rrf (5S)- rrl (23S)基因间隔子的限制性片段长度多态性(RFLP)证实了基因型扩增子。单克隆抗体H3TS对55 B具有100%的敏感性。 burgdorferi ss 分离株,但与属于 B的所有四个分离株均具有反应性。 bissetii 。单克隆抗体I 17.3对45 B表现出100%的特异性和敏感性。 afzelii 分离株。单克隆抗体D6对em B具有100%特异性。 garinii ,但错过了64个分离株中的1个(敏感性为98.5%)。单克隆抗体A116k对em B具有100%特异性。瓦莱州(Valaisiana),但与24株分离株中的4株无反应(敏感性为83.5%)。遗传分析与这些抗体的反应性结果和表型分型的确证效力密切相关。一些分离株显示非典型RFLP。因此,需要表型和基因型分析来表征新的 Borrelia 分离株。

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