,Quantitation of Genital Herpes Virus DNA by Polymerase Chain Reaction and ELISA

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Objective:To detect and quantitate genital herpes simplex virus (HSV) DNA in specimens from 100 patients clinically diagnosed with genital herpes.Methods: Polymerase Chain Reaction (PCR) and enzyme-linked immunosorbent assay (ELISA) were used with a standard curve of DNA copies of HSV as quantitative contrast.Results: Ninety-three cases were confirmed HSV positive and 7 cases were found to be negative. There were 58 cases of HSV-2 (62.4%) and 35 cases of HSV-1 (37.6%) among the 93 positive cases. The number of DNA plasmids ranged from 115 to 1.1×105 per 250μL among the 93 positive samples (mean =7.1×104/250μL). The number of HSV DNA plasmids ranged from 136 to 1.1×105 copies per 250μL (mean =7.6×104) among those with HSV-2, and 115 to 9.4×104 per 250μL (mean =6.3×104) among those with HSV-1. Meanwhile 10μL of extracted and dissolved DNA randomly taken from 8 each of HSV-2 and HSV-1 samples were tested. The number of HSV-2 DNA plasmids ranged from 35 copies to 2.7×104 (Mean =1.8×104) and the number of HSV-1 DNA ranged from 29 to 2.5×104 (Mean = 1.6×104). In the 7 negative cases, the quantity of HSV plasmids was zero.Conclusion: The sensitivity of ELISA quantitation (93%) is equal to that of Southe blot. The sensitivity of PCR for diagnosis is 91%, and 88% for PCR typing.
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