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Time course of cellular HIV-DNA and low-level HIV viremia in HIV–HCV co-infected patients whose HCV infection had been successfully treated with directly acting antivirals

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Abstract

This longitudinal study described cellular HIV-DNA changes and their correlation with HIV low-level plasma viremia (LLV) in HIV–HCV co-infected patients on successful antiretroviral and anti-HCV therapy by treatment with direct-acting antivirals (DAA). Thirty-nine patients were examined prior to the start of DAA (T0), after week 12 (T1) and 24 weeks (T2) of anti-HCV therapy. Cellular PBMC HIV-DNA was analysed as an absolute value and as the percentage of increase or decrease from T0 to T2. Patients were classified as having undetectable plasma HIV viraemia (UV) or LLV in the year before the start of anti-HCV treatment and within the T0–T2 study period. Thirty-five patients (89.7%) of the 39 subjects enrolled had the same plasma HIV viraemia control in the year before HCV treatment and in the T0–T2 interval. The HIV-DNA value at T0 and at T2 was higher in patients with LLV than in subjects with UV (p = 0.015 and p = 0.014, respectively). A similar proportion of patients with LLV and UV experienced an increase or decrease of HIV-DNA from T0 to T2. The percentage increase in HIV-DNA value (262.8%) from T0 to T2 was higher compared to the decrease (43.5%) in patients with UV (p = 0.012), and it was higher compared to the percentage increase in HIV-DNA value reported in subjects with LLV (262.8 versus 49%, p = 0.026). HIV–HCV co-infected patients experienced a multifaceted perturbation of cellular HIV-DNA levels within a 24-week period during anti-HCV treatment; the extent of the phenomenon was greater in subjects with UV. Fast HCV-RNA clearance seemed to have a greater influence on the cellular reservoir than on plasma HIV-RNA.

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Acknowledgements

This work was supported by MURST ex 60% (60A07-2972/15) to MB.

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  1. Department of Molecular Medicine, University of Padova, Via Gabelli 63, 35100, Padua, Italy

    Saverio G. Parisi, Samantha Andreis, Monica Basso & Giorgio Palù

  2. Infectious Diseases Unit, Padova Hospital, Via Giustiniani, 2, 35128, Padua, Italy

    Silvia Cavinato, Renzo Scaggiante, Marzia Franzetti & Anna Maria Cattelan

  3. Clinical Infectious Diseases, Tor Vergata University, Viale Oxford, 81, 00133, Rome, Italy

    Massimo Andreoni

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Parisi, S.G., Andreis, S., Basso, M. et al. Time course of cellular HIV-DNA and low-level HIV viremia in HIV–HCV co-infected patients whose HCV infection had been successfully treated with directly acting antivirals. Med Microbiol Immunol 206, 419–428 (2017). https://doi.org/10.1007/s00430-017-0518-x

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