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Evaluation of the genotypic pattern of HIV-1 resistance in AIDS patients failing antiretroviral therapy
Bahia, Fabianna; Pedroso, Célia; Netto, Eduardo Martins; Figueiredo, Ricardo; Pinto Neto, Lauro; Brites, Carlos.
Affiliation
  • Bahia, Fabianna; Federal University of Bahia. Salvador. BR
  • Pedroso, Célia; Federal University of Bahia. Salvador. BR
  • Netto, Eduardo Martins; Federal University of Bahia. Salvador. BR
  • Figueiredo, Ricardo; Federal University of Bahia. Salvador. BR
  • Pinto Neto, Lauro; Santa Casa de Vitória. Vitória. BR
  • Brites, Carlos; s.af
Braz. j. infect. dis ; Braz. j. infect. dis;8(4): 281-289, Aug. 2004. tab, graf
Article in En | LILACS | ID: lil-389474
Responsible library: BR1.1
ABSTRACT
We analyzed the first 96 patients tested for HIV resistance to antiretroviral therapy in three Brazilian states. The HIV-1 reverse transcriptase (RT) and protease (PR) were sequenced by using the ABI ViroSeq system. The drugs previously used for each patient were recorded and correlated with the mutations found in the samples. Viral load (VL) and CD4 count were also recorded. Only one patient had the wild type sequence. The most prevalent mutations were 184V (59 percent), 41L (47.9 percent), 63P (53 percent), 215Y (50 percent), 36I (46 percent), 10I (35 percent), 67N (42 percent), 77I (37 percent), 90M (36 percent) and 210W (33 percent). A positive correlation between the number of previously used ARVs and the number of mutations was observed (p<0.05). Associations between mutations and ARV drugs were identified at positions 69, 118, 184 and 215 with previous exposure to NRTI, mutations at positions 98, 100, 103, 181 and 190 with previous NNRTI use and at positions 10, 20, 30, 46, 53, 54, 71, 73, 82, 84, 88 and 90 with previous PI therapy (p<0.05). Previous exposure to ARV drugs was associated with previous genotypic resistance to specific drugs, leading to treatment failure in HIV patients. Genotypic resistance was clearly associated with virological and immunological failure.
Subject(s)
Full text: 1 Index: LILACS Main subject: HIV Protease / Acquired Immunodeficiency Syndrome / HIV-1 / Anti-HIV Agents / Drug Resistance, Multiple, Viral / HIV Reverse Transcriptase Limits: Female / Humans / Male Language: En Journal: Braz. j. infect. dis Journal subject: DOENCAS TRANSMISSIVEIS Year: 2004 Type: Article
Full text: 1 Index: LILACS Main subject: HIV Protease / Acquired Immunodeficiency Syndrome / HIV-1 / Anti-HIV Agents / Drug Resistance, Multiple, Viral / HIV Reverse Transcriptase Limits: Female / Humans / Male Language: En Journal: Braz. j. infect. dis Journal subject: DOENCAS TRANSMISSIVEIS Year: 2004 Type: Article