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A simple real-time polymerase chain reaction assay using SYBR Green for hepatitis C virus genoty**

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Abstract

Detection of the hepatitis C virus (HCV) genome is crucial for diagnosis of HCV infection and for monitoring the efficacy of HCV treatment. Thus, we aimed to develop a convenient screening test for common HCV genotypes based on melting curve analysis with PCR. Serum samples were drawn from 124 patients with known HCV infection confirmed to be antibody and HCV RNA positive. A characteristic melting curve was obtained by monitoring the fluorescence as the temperature increased through the melting point of the PCR product. Results were compared with those obtained by the restriction fragment length polymorphism (RFLP) genoty** method. The melting curve analysis indicated that the different genotypes had discrete melting points (P < 0.0001): 90.43 +/- 0.065 degrees for genotype 1 (n = 35), 90.21 +/- 0.064 degrees for genotype 2 (n = 18), 90.62 +/- 0.045 degrees for genotype 3 (n = 29) and 90.84 +/- 0.130 degrees for genotype 4 (n = 42). The genotype was determined for all samples using the newly developed method as well as RFLP, and the two systems produced concordant results. The sensitivity of the assay was 91.4 % for genotype 1, 83.3 % for genotype 2, 93.1 % for genotype 3, and 85.7 % for genotype 4. Genotypes detected by melting curve analysis significantly correlated with those detected by RFLP (r = 0.946, P < 0.0001) with a strong linear relationship (r 2 = 0.895). This melting curve analysis is a rapid, convenient and low-cost screening test for differentiation of HCV genotypes 1-4.

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Authors and Affiliations

  1. Clinical Pathology Department, Faculty of Medicine, Mansoura University, Mansoura, Egypt

    Hosam Zaghloul

  2. Botany Department, Faculty of Science, Mansoura University, Mansoura, Egypt

    A. A. El Morsi, H. E. Soweha, Ashraf Elsayed & Hossam El-Sharawy

  3. Internal Medicine Department, Faculty of Medicine, Mansoura University, Mansoura, Egypt

    S. Seif

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  1. Hosam Zaghloul
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  2. A. A. El Morsi
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  3. H. E. Soweha
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  4. Ashraf Elsayed
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  6. Hossam El-Sharawy
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Correspondence to Hosam Zaghloul.

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Zaghloul, H., El Morsi, A.A., Soweha, H.E. et al. A simple real-time polymerase chain reaction assay using SYBR Green for hepatitis C virus genoty**. Arch Virol 162, 57–61 (2017). https://doi.org/10.1007/s00705-016-3059-5

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  • DOI: https://doi.org/10.1007/s00705-016-3059-5

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