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Title: Prevalence of antiretroviral drug resistance in treated HIV-1 infected patients: Under the initiative of access to the NNRTI-based regimen in Thailand
Authors: Chonlaphat Sukasem
V. Churdboonchart
S. Chasombat
S. Kohreanudom
Chotip Watitpun
Wantanich Piroj
Montip Tiensuwan
Wasun Chantratita
Mahidol University
Thailand Ministry of Public Health
Keywords: Medicine;Pharmacology, Toxicology and Pharmaceutics
Issue Date: 1-Jan-2007
Citation: Journal of Chemotherapy. Vol.19, No.5 (2007), 528-535
Abstract: To determine the prevalence of antiretroviral resistance in treatment-failure HIV-1 infected individuals, under the initiative of the non-nucleoside reverse transcriptase inhibitor (NNRTI)-based regimen in Thailand, plasma samples were collected from 1,376 HIV-1 infected patients, who were failing in their current HAART therapy during 2000-2004. They were stratified into 2 intervals: group one (1), 558 HIV-1 infected patients (2000-2002; before the initiative of access to HAART), and group two (2), 818 HIV-1 infected patients (2003-2004; after the initiative of access to HAART). Genotypic resistance testing was performed. The frequency of antiretroviral drug resistance in treatment-failure HIV-1 infected patients has significantly increased over time from 68.5% (382/558) during 2000-2002 to 74.9% (613/818) during 2003-2004 (P<0.01). Resistance to NNRTI during 2003-2004 (59.2%) was much higher than that during 2000-2002 (36.9%; P<0.001). However, the frequency of nucleoside reverse transcriptase inhibitor (NRTI) drug resistance was not significantly higher (P=0.153). We showed that this correlated with an increase in the NNRTI-based regimen prescribed during 2003-2004, especially the Thai-produced combination pill, GPO-VIR. Our finding also showed that a high level of genotypic drug resistance is associated with GPO-VIR (40.8% lamivudine, 40.6% stavudine, 43.8% nevirapine). In order to avoid the rapid emergence of resistant viruses in a resource-poor setting, a close surveillance of antiretroviral drug resistance is feasible and should be considered. © E.S.I.F.T. srl.
ISSN: 1120009X
Appears in Collections:Scopus 2006-2010

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