Surveillance of transmitted antiretroviral drug resistance among HIV-1 infected women attending antenatal clinics in Chitungwiza, Zimbabwe

The rapid scale-up of highly active antiretroviral therapy (HAART) and use of single dose Nevirapine (SD NVP) for prevention of mother-to-child transmission (pMTCT) have raised fears about the emergence of resistance to the first line antiretroviral drug regimens. A cross-sectional study was conduct...

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Veröffentlicht in:PloS one 2011-06, Vol.6 (6), p.e21241-e21241
Hauptverfasser: Tshabalala, Mqondisi, Manasa, Justen, Zijenah, Lynn S, Rusakaniko, Simbarashe, Kadzirange, Gerard, Mucheche, Mary, Kassaye, Seble, Johnston, Elizabeth, Katzenstein, David
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container_title PloS one
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creator Tshabalala, Mqondisi
Manasa, Justen
Zijenah, Lynn S
Rusakaniko, Simbarashe
Kadzirange, Gerard
Mucheche, Mary
Kassaye, Seble
Johnston, Elizabeth
Katzenstein, David
description The rapid scale-up of highly active antiretroviral therapy (HAART) and use of single dose Nevirapine (SD NVP) for prevention of mother-to-child transmission (pMTCT) have raised fears about the emergence of resistance to the first line antiretroviral drug regimens. A cross-sectional study was conducted to determine the prevalence of primary drug resistance (PDR) in a cohort of young (
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A cross-sectional study was conducted to determine the prevalence of primary drug resistance (PDR) in a cohort of young (&lt;25 yrs) HAART-naïve HIV pregnant women attending antenatal clinics in Chitungwiza, Zimbabwe. Whole blood was collected in EDTA for CD4 counts, viral load, serological estimation of duration of infection using the BED Calypte assay and genotyping for drug resistance. Four hundred and seventy-one women, mean age 21 years; SD: 2.1 were enrolled into the study between 2006 and 2007. Their median CD4 count was 371cells/µL; IQR: 255-511 cells/µL. Two hundred and thirty-six samples were genotyped for drug resistance. Based on the BED assay, 27% were recently infected (RI) whilst 73% had long-term infection (LTI). Median CD4 count was higher (p&lt;0.05) in RI than in women with LTI. Only 2 women had drug resistance mutations; protease I85V and reverse transcriptase Y181C. Prevalence of PDR in Chitungwiza, 4 years after commencement of the national ART program remained below WHO threshold limit (5%). Frequency of recent infection BED testing is consistent with high HIV acquisition during pregnancy. With the scale-up of long-term ART programs, maintenance of proper prescribing practices, continuous monitoring of patients and reinforcement of adherence may prevent the acquisition and transmission of PDR.</description><identifier>ISSN: 1932-6203</identifier><identifier>EISSN: 1932-6203</identifier><identifier>DOI: 10.1371/journal.pone.0021241</identifier><identifier>PMID: 21698125</identifier><language>eng</language><publisher>United States: Public Library of Science</publisher><subject>Acquired immune deficiency syndrome ; Adult ; AIDS ; Antiretroviral agents ; Antiretroviral drugs ; Bed load ; Biology ; CD4 antigen ; CD4 Lymphocyte Count ; DNA polymerases ; Drug resistance ; Drug Resistance, Viral ; Drug therapy ; Ethylenediaminetetraacetic acids ; Female ; Genotyping ; Highly active antiretroviral therapy ; HIV ; HIV Infections - drug therapy ; HIV Infections - epidemiology ; HIV Infections - virology ; HIV-1 - isolation &amp; purification ; Human immunodeficiency virus ; Humans ; Infection ; Infections ; Medicine ; Mutation ; Nevirapine ; Population Surveillance ; Pregnancy ; Pregnant women ; Proteases ; RNA-directed DNA polymerase ; Viral Load ; Womens health ; Zimbabwe - epidemiology</subject><ispartof>PloS one, 2011-06, Vol.6 (6), p.e21241-e21241</ispartof><rights>COPYRIGHT 2011 Public Library of Science</rights><rights>2011. 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A cross-sectional study was conducted to determine the prevalence of primary drug resistance (PDR) in a cohort of young (&lt;25 yrs) HAART-naïve HIV pregnant women attending antenatal clinics in Chitungwiza, Zimbabwe. Whole blood was collected in EDTA for CD4 counts, viral load, serological estimation of duration of infection using the BED Calypte assay and genotyping for drug resistance. Four hundred and seventy-one women, mean age 21 years; SD: 2.1 were enrolled into the study between 2006 and 2007. Their median CD4 count was 371cells/µL; IQR: 255-511 cells/µL. Two hundred and thirty-six samples were genotyped for drug resistance. Based on the BED assay, 27% were recently infected (RI) whilst 73% had long-term infection (LTI). Median CD4 count was higher (p&lt;0.05) in RI than in women with LTI. Only 2 women had drug resistance mutations; protease I85V and reverse transcriptase Y181C. 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A cross-sectional study was conducted to determine the prevalence of primary drug resistance (PDR) in a cohort of young (&lt;25 yrs) HAART-naïve HIV pregnant women attending antenatal clinics in Chitungwiza, Zimbabwe. Whole blood was collected in EDTA for CD4 counts, viral load, serological estimation of duration of infection using the BED Calypte assay and genotyping for drug resistance. Four hundred and seventy-one women, mean age 21 years; SD: 2.1 were enrolled into the study between 2006 and 2007. Their median CD4 count was 371cells/µL; IQR: 255-511 cells/µL. Two hundred and thirty-six samples were genotyped for drug resistance. Based on the BED assay, 27% were recently infected (RI) whilst 73% had long-term infection (LTI). Median CD4 count was higher (p&lt;0.05) in RI than in women with LTI. Only 2 women had drug resistance mutations; protease I85V and reverse transcriptase Y181C. Prevalence of PDR in Chitungwiza, 4 years after commencement of the national ART program remained below WHO threshold limit (5%). Frequency of recent infection BED testing is consistent with high HIV acquisition during pregnancy. With the scale-up of long-term ART programs, maintenance of proper prescribing practices, continuous monitoring of patients and reinforcement of adherence may prevent the acquisition and transmission of PDR.</abstract><cop>United States</cop><pub>Public Library of Science</pub><pmid>21698125</pmid><doi>10.1371/journal.pone.0021241</doi><tpages>e21241</tpages><oa>free_for_read</oa></addata></record>
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subjects Acquired immune deficiency syndrome
Adult
AIDS
Antiretroviral agents
Antiretroviral drugs
Bed load
Biology
CD4 antigen
CD4 Lymphocyte Count
DNA polymerases
Drug resistance
Drug Resistance, Viral
Drug therapy
Ethylenediaminetetraacetic acids
Female
Genotyping
Highly active antiretroviral therapy
HIV
HIV Infections - drug therapy
HIV Infections - epidemiology
HIV Infections - virology
HIV-1 - isolation & purification
Human immunodeficiency virus
Humans
Infection
Infections
Medicine
Mutation
Nevirapine
Population Surveillance
Pregnancy
Pregnant women
Proteases
RNA-directed DNA polymerase
Viral Load
Womens health
Zimbabwe - epidemiology
title Surveillance of transmitted antiretroviral drug resistance among HIV-1 infected women attending antenatal clinics in Chitungwiza, Zimbabwe
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