alexa Monitoring the response to antiretroviral therapy in HIV-1 group O infected patients using two new RT-PCR assays.
Infectious Diseases

Infectious Diseases

Journal of AIDS & Clinical Research

Author(s): de Mendoza C, Lu W, Machuca A, Sainz M, Castilla J,

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Abstract Failure to recognise infection caused by human immunodeficiency virus type 1 (HIV-1) group O variants has been described using both serological and genetic procedures. Moreover, monitoring the response to antiretroviral therapy is a difficult task in patients infected with HIV-1 group O since commercial tests are not available so far for the quantitation of this virus. In this study, the virological response to antiretroviral therapy were assessed in five HIV-1 group O-infected patients living in Spain by using two new and different RT-PCR methods (MUPROVAMA and LCx). Twenty-four plasma samples belonging to these five patients were selected. As reference, p24 antigenaemia levels and CD4+ cell counts were used. All samples yielded positive viral load values using MUPROVAMA (range: 138 to 595,500 HIV-RNA copies/ml) and 23 of 24 using LCx (range: < 178 to 98,356 HIV-RNA copies/ml). Overall, the results obtained using both assays showed a good correlation among themselves, and in respect to p24 antigenaemia and CD4+ cell counts. However, the values provided by LCx were significantly lower (0.33 logs on average) than those provided by MUPROVAMA. In conclusion, both the highly sensitive MUPROVAMA and LCx Quantitative assays might represent an useful tool for guiding the decision on when start treatment and for monitoring the response to antiretroviral therapy in HIV-1 group O-infected patients. Copyright 2001 Wiley-Liss, Inc.
This article was published in J Med Virol and referenced in Journal of AIDS & Clinical Research

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