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  • Title: Delayed liver fibrosis in HTLV-2-infected patients co-infected with HIV-1 and hepatitis C virus with suppressive antiretroviral therapy.
    Author: Abad-Fernández M, Moreno A, Dronda F, del Campo S, Quereda C, Casado JL, Pérez-Elías MJ, Moreno S, Vallejo A.
    Journal: AIDS; 2015 Feb 20; 29(4):401-9. PubMed ID: 25565497.
    Abstract:
    OBJECTIVES: The absence of direct clinical symptoms clearly associated to HTLV-2 infection may partially explain an underestimate of the real HTLV-2 prevalence rate and its effects in patients concurrently infected with HIV-1 and hepatitis C virus (HCV). Hence, to date, the influence of HTLV-2 on hepatic fibrosis has been poorly studied. DESIGN: Retrospective study to clarify the influence of HTLV-2 infection in HCV infection and hepatic fibrosis among patients co-infected with HIV-1. METHODS: This is a comparative cohort study including 39 HTLV-2-HIV-1-HCV co-infected patients and 42 HIV-1-HCV co-infected patients conducted in a tertiary care hospital. They were evaluated for transaminase levels, hepatic fibrosis stage, interleukin (IL)-28B genotype, Th1/Th2/Th17 cytokine levels, immune activation, inflammation, and microbial translocation. RESULTS: HTLV-2-HIV-1-HCV co-infected patients had lower alanine aminotransferase levels (P = 0.023) and hepatic fibrosis (P = 0.012), compared to HIV-1-HCV co-infected patients. Moreover, Kaplan-Meier survival analysis showed a delay in hepatic fibrosis development for up to 5 years (P = 0.032). HTLV-2-HIV-1-HCV co-infected patients also had higher Th1/Th2 ratio (interferon γ/IL-4 ratio, P = 0.043; tumor necrosis factor α/IL-4 ratio, P = 0.010) and Th17 response (P = 0.015), whereas lower CD8 T-cell activation (P = 0.017) and lipopolysaccharide level (P = 0.001). CONCLUSION: Findings strongly support that HTLV-2 co-infection might delay fibrosis development in HCV-HIV-1 co-infected patients.
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