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Träfflista för sökning "WFRF:(Ekici A) srt2:(2008-2009)"

Sökning: WFRF:(Ekici A) > (2008-2009)

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  • Bergroth, T., et al. (författare)
  • Selection of drug-resistant HIV-1 during the early phase of viral decay is uncommon in treatment-naive patients initiated on a three- or four-drug antiretroviral regimen including lamivudine
  • 2009
  • Ingår i: Journal of medical virology. - : Wiley. - 1096-9071 .- 0146-6615. ; 81:1, s. 1-8
  • Tidskriftsartikel (refereegranskat)abstract
    • Therapy failure due to drug resistance development is a common phenomenon in HIV-infected patients. However, when the drug pressure leads to the earliest selection of drug-resistant HIV-1 populations is still unclear. In this study, the extent to which selection of the HIV-1 reverse transcriptase M184I/V mutations occur during the initial phase of viral decay in treatment-naive HIV-1 infected patients receiving antiretroviral therapy (ART) was examined. Plasma virus from three cohorts of treatment-naive patients initiating quadruple (n = 43), triple (n = 14) or dual (n = 15) lamivudine-containing ART were analyzed for M184I/V during the first 6 months of therapy using direct sequencing and a sensitive selective real-time PCR method. Among quadruple ART patients, who all were treated at primary HIV-1 infection, only one patient developed M184V after 6 weeks of therapy, having had wild-type virus at baseline. No mutations were found in chronically infected patients on triple ART. In patients on dual therapy, M184I/V mutants were found frequently. Selection of M184I/V mutants was found to be rare during the initial phase of viral decay after initiation of ART in adherent patients given a three or four-drug combination, in contrast to those receiving a less potent regimen. The results suggest that triple and quadruple lamivudine + PI or PI/r containing ART given to treatment-naive adherent patients is potent enough to prevent development of resistance during the first months of therapy.
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