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Prevalence of multiple dideoxynucleoside analogue resistance (MddNR) in a cohort of Italian HIV-1 seropositive patients extensively treated with antiretroviral drugs
As the emergence of highly resistant virus might compromise antiretroviral regimens in HIV-1 infected patients, a constant analysis of genotypic mutations should be performed to establish the magnitude of mutation prevalence and gauge their impact in patients treated extensively with combination the...
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Published in: | International journal of antimicrobial agents 2001-12, Vol.18 (6), p.519-523 |
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container_title | International journal of antimicrobial agents |
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creator | Re, M.C Borderi, M Monari, P Bon, I Gorini, R Gibellini, D Verucchi, G Fortunato, L Chiodo, F La Placa, M |
description | As the emergence of highly resistant virus might compromise antiretroviral regimens in HIV-1 infected patients, a constant analysis of genotypic mutations should be performed to establish the magnitude of mutation prevalence and gauge their impact in patients treated extensively with combination therapy. The frequency of multiple dideoxynucleoside analogue resistance (MddNR) was evaluated in a group of Italian HIV-1 seropositive patients who failed to respond to therapy despite a long-lasting drug treatment. Results showed the presence of one or more mutations (A62V, V75I, F77L, F116Y and Q151M) able to confer resistance to all NRTIs in a relatively high percentage (7.9%) of patients enrolled in the study. Moreover, a significantly lower HIV-1 viral replication in patients with MddNR, suggested the importance of monitoring HIV-1 subjects not only by viral load, but also by drug resistance testing, so that a correct drug regimen may be chosen. |
doi_str_mv | 10.1016/S0924-8579(01)00440-X |
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Antiparasitic agents ; antiretroviral therapy ; Antiviral agents ; Antiviral Agents - pharmacology ; Antiviral Agents - therapeutic use ; Biological and medical sciences ; Cohort Studies ; Dideoxynucleosides - pharmacology ; Dideoxynucleosides - therapeutic use ; Drug Resistance, Multiple, Viral - genetics ; Genotype ; HIV Infections - drug therapy ; HIV Infections - virology ; HIV Seropositivity - drug therapy ; HIV Seropositivity - virology ; HIV-1 - drug effects ; HIV-1 - genetics ; Human immunodeficiency virus 1 ; Humans ; Italy ; Medical sciences ; Multiple dideoxynucleoside analogue-resistant HIV-1 variants ; Mutation ; nucleoside analogs ; Pharmacology. 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The frequency of multiple dideoxynucleoside analogue resistance (MddNR) was evaluated in a group of Italian HIV-1 seropositive patients who failed to respond to therapy despite a long-lasting drug treatment. Results showed the presence of one or more mutations (A62V, V75I, F77L, F116Y and Q151M) able to confer resistance to all NRTIs in a relatively high percentage (7.9%) of patients enrolled in the study. Moreover, a significantly lower HIV-1 viral replication in patients with MddNR, suggested the importance of monitoring HIV-1 subjects not only by viral load, but also by drug resistance testing, so that a correct drug regimen may be chosen.</description><subject>Adult</subject><subject>Antibiotics. Antiinfectious agents. Antiparasitic agents</subject><subject>antiretroviral therapy</subject><subject>Antiviral agents</subject><subject>Antiviral Agents - pharmacology</subject><subject>Antiviral Agents - therapeutic use</subject><subject>Biological and medical sciences</subject><subject>Cohort Studies</subject><subject>Dideoxynucleosides - pharmacology</subject><subject>Dideoxynucleosides - therapeutic use</subject><subject>Drug Resistance, Multiple, Viral - genetics</subject><subject>Genotype</subject><subject>HIV Infections - drug therapy</subject><subject>HIV Infections - virology</subject><subject>HIV Seropositivity - drug therapy</subject><subject>HIV Seropositivity - virology</subject><subject>HIV-1 - drug effects</subject><subject>HIV-1 - genetics</subject><subject>Human immunodeficiency virus 1</subject><subject>Humans</subject><subject>Italy</subject><subject>Medical sciences</subject><subject>Multiple dideoxynucleoside analogue-resistant HIV-1 variants</subject><subject>Mutation</subject><subject>nucleoside analogs</subject><subject>Pharmacology. 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Antiinfectious agents. Antiparasitic agents</topic><topic>antiretroviral therapy</topic><topic>Antiviral agents</topic><topic>Antiviral Agents - pharmacology</topic><topic>Antiviral Agents - therapeutic use</topic><topic>Biological and medical sciences</topic><topic>Cohort Studies</topic><topic>Dideoxynucleosides - pharmacology</topic><topic>Dideoxynucleosides - therapeutic use</topic><topic>Drug Resistance, Multiple, Viral - genetics</topic><topic>Genotype</topic><topic>HIV Infections - drug therapy</topic><topic>HIV Infections - virology</topic><topic>HIV Seropositivity - drug therapy</topic><topic>HIV Seropositivity - virology</topic><topic>HIV-1 - drug effects</topic><topic>HIV-1 - genetics</topic><topic>Human immunodeficiency virus 1</topic><topic>Humans</topic><topic>Italy</topic><topic>Medical sciences</topic><topic>Multiple dideoxynucleoside analogue-resistant HIV-1 variants</topic><topic>Mutation</topic><topic>nucleoside analogs</topic><topic>Pharmacology. 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subjects | Adult Antibiotics. Antiinfectious agents. Antiparasitic agents antiretroviral therapy Antiviral agents Antiviral Agents - pharmacology Antiviral Agents - therapeutic use Biological and medical sciences Cohort Studies Dideoxynucleosides - pharmacology Dideoxynucleosides - therapeutic use Drug Resistance, Multiple, Viral - genetics Genotype HIV Infections - drug therapy HIV Infections - virology HIV Seropositivity - drug therapy HIV Seropositivity - virology HIV-1 - drug effects HIV-1 - genetics Human immunodeficiency virus 1 Humans Italy Medical sciences Multiple dideoxynucleoside analogue-resistant HIV-1 variants Mutation nucleoside analogs Pharmacology. Drug treatments Q151M complex HIV-1 viral load Viral Load |
title | Prevalence of multiple dideoxynucleoside analogue resistance (MddNR) in a cohort of Italian HIV-1 seropositive patients extensively treated with antiretroviral drugs |
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