用逆转录PCR-核酸探针杂交法对柯萨奇B组病毒分型诊断

目的 建立一种逆转录PCR-核酸探针杂交法对柯萨奇B组病毒(CVB1～6)进行分型诊断。方法 一对通用PCR引物，它能有效扩增所有CVB1-6型的特异性DNA片段；另选取6条各型特异性寡核苷酸探针，将它们分别共价结合在不同的微孔板上。经过一次PCR扩增，扩增后的产物分别与包被有不同探针的微孔板进行杂交检测，从而有效鉴别CVB各型。结果 本法与ELISA法的分型比较显示它们具有很好的一致性，无错误分型。对152例IgM抗体阳性标本的检测，该方法阳性率为71．7％。结论 本法可准确对CVB进行分型，为CVB的临床诊断及流行病学调查提供了一种有效的方法。

Coxsackie virus B types were discriminated by RT-PCR

Objective To develop a method for detection of coxsackie B virus type 1-6 by RT-PCR Methods A pair of primers were designed to amplify all types of coxsackie B virus 1-6 efficiently The PCR product was hybridized in micro-wells in which 6 type specific oligonucleotide probes had been coated respectively, colorimetric detection was performed to discriminate the types of coxsackie B virus Results This method was shown to be concordant with the IgM ELISA, 717% of anti-coxsackie B positive cases could be detected by RT-PCRConclusion The RT-PCR method can type coxsackie B virus efficiently and provides a tool for clinical diagnosis and epidemiological investigation