Abstract
Bovine viral diarrhea virus (BVDV) fall into cytopathic (CP) and noncytopathic (NCP) biotypes, based on their ability to kill cultured cells. NCP-BVDV can not be titrated by conventional means as used for CP-BVDV, which has impeded the identification of antiviral drugs targeting NCP-BVDV virus strains. In this study, the application of an immunoperoxidase assay in the screening of antiviral drugs was tested using two known BVDV inhibitors, ribavirin and ammonium chloride (NH4Cl). Phospholipase C inhibitor U73122 was identified to affect BVDV infection by using this immunoperoxidase assay. In addition, the results of immunoperoxidase assay were validated by real-time PCR. Taken together, the immunoperoxidase assay is a useful and versatile method suitable for antiviral drug screening targeting NCP-BVDV.
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