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JAC Advance Access originally published online on January 9, 2007
Journal of Antimicrobial Chemotherapy 2007 59(3):565-568; doi:10.1093/jac/dkl497
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© The Author 2007. Published by Oxford University Press on behalf of the British Society for Antimicrobial Chemotherapy. All rights reserved. For Permissions, please e-mail: journals.permissions@oxfordjournals.org

Antiretroviral activity of pegylated interferon alfa-2a in patients co-infected with HIV/hepatitis C virus

D. Aguilar Marucco*, L. Veronese, D. Gonzalez de Requena, S. Bonora, A. Calcagno, I. Cavecchia, A. Sinicco, F. G. De Rosa, G. Cariti and G. Di Perri

Department of Infectious Diseases, University of Turin, Amedeo di Savoia Hospital, Corso Svizzera 164, Turin, Italy

Received 12 September 2006; returned 29 October 2006; revised 9 November 2006; accepted 13 November 2006

* Corresponding author. Tel: +39-011-4393980; Fax: +39-011-4393882; E-mail: diego.agui{at}libero.it

Objectives: To evaluate the early anti-HIV activity of pegylated interferon (PEG-IFN) alfa-2a and ribavirin in HIV/hepatitis C virus (HCV) co-infected patients not receiving antiretroviral therapy.

Patients and methods: In 19 patients with baseline plasma HIV load (HIV-RNA) >1000 copies/mL treated with PEG-IFN alfa-2a and ribavirin, HIV-RNA and T-cell subsets were measured at baseline and 2, 4 and 12 weeks after initiation of anti-HCV therapy.

Results: We observed a significant HIV-RNA decrease (>1 log10 copies/mL) through week 12 of anti-HCV treatment. The magnitude of HIV-RNA decline was associated with baseline HIV-RNA, CD4 count and PEG-IFN weight-adjusted dose.

Conclusions: A significant early anti-HIV activity of PEG-IFN alfa-2a was observed. Such an effect warrants further clinical evaluation in the management of co-infected patients.

Keywords: anti-HIV activity , interferons , anti-HCV therapy


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