Frequency of mutations conferring resistance to nucleoside reverse transcriptase inhibitors in human immunodeficiency virus type 1-infected patients in Korea.
PMID: 11923351
2002
Journal of clinical microbiology
Abstract: The frequencies of K70R, T215S/Y/F (i.e., mutation of T at codon 215 to S, Y, or F), D67N/E, K219Q, T69N/S/A, M41L, and L210W mutations conferring resistance to zidovudine were 57.6, 36.4, 36.4, 27.2, 24.2, 21.2, and 12.1%, respectively.
Primary HIV-1 resistance in recently and chronically infected individuals of the Italian Cohort Naive for Antiretrovirals.
PMID: 12003172
2002
Journal of biological regulators and homeostatic agents
Abstract: Among mutations associated with high-level resistance to RTI, T215Y was found in only 2 patients, M184V in 2 cases, T69D in another case, and K103N in only 1 patient, for a total of 6 patients (one carrying both T215Y and M184V) (1.7%).
ATP-dependent removal of nucleoside reverse transcriptase inhibitors by human immunodeficiency virus type 1 reverse transcriptase.
PMID: 12069972
2002
Antimicrobial agents and chemotherapy
Abstract: Recombinant wild-type and mutant HIV type 1 (HIV-1) RT enzymes with thymidine analog resistance mutations D67N, K70R, and T215Y were analyzed for their ability to remove eight nucleoside reverse transcriptase inhibitors in the presence of physiological concentrations of ATP.
Prevalence of HIV-1 polymerase gene mutations in pre-treated patients in Thailand.
PMID: 12118466
2002
The Southeast Asian journal of tropical medicine and public health
Abstract: Zidovudine-resistant mutants: T215Y/F (36%), M41L (28%) and K70R (25.3%) were common; but mutations linked to didanosine (L74V) and multinucleoside-resistant genotypes (Q151M) were rarely recognized (2.4% and 3.6%, respectively).
Prevalence of mutations related to HIV-1 antiretroviral resistance in Brazilian patients failing HAART.
Abstract: According to multivariate analysis, NFV Cmin and Cmax, CD4 cell count, number of baseline RT + protease gene mutations, D67N, M184V, T215F/Y in RT, and M36I in protease, were independent factors that were significantly predictive of failure.
M184V is associated with a low incidence of thymidine analogue mutations and low phenotypic resistance to zidovudine and stavudine.
Abstract: The number of thymidine analogue mutations (TAMs) was lower in isolates with M184V, this was independent of plasma HIV-1-RNA level and time on therapy for T215F/Y, D67N and L210W.
Nucleoside analog resistance caused by insertions in the fingers of human immunodeficiency virus type 1 reverse transcriptase involves ATP-mediated excision.
Abstract: Although the dideoxynucleoside analogs of other nucleosides were excised more slowly than AZTMP, ddTMP, and d4TMP, the mutants with the fingers insertion and T215Y excised all of the nucleoside analogs that were tested more efficiently than wild-type RT or a mutant RT carrying the classical AZT resistance mutations.
Abstract: However, unlike the classic AZT resistance mutations (M41L/D67N/K70R/T215Y or F/K219E or Q), the combination of the amino acid insertions in the fingers and the T215Y mutation allows efficient excision of ddTMP and d4TMP, even when relatively high levels of deoxynucleoside triphosphates are present in the reaction.
[Genotypic resistance of human immunodeficiency virus in patients with virologic failure].
Abstract: RESULTS: Mutations were observed in 52,6% of cases for reverse transcriptase (RT) an in 81,8% for the protease genes, being T215Y and V82A the most frequently detected ones.
Crystal structures of Zidovudine- or Lamivudine-resistant human immunodeficiency virus type 1 reverse transcriptases containing mutations at codons 41, 184, and 215.
Abstract: Model building M41L and T215Y into HIV-1 RT-DNA and docking in ATP that is utilized in the pyrophosphorolysis reaction for AZT resistance indicates that some conformational rearrangement appears necessary in RT for ATP to interact simultaneously with the M41L and T215Y mutations.
Abstract: Six structures of human immunodeficiency virus type 1 (HIV-1) reverse transcriptase (RT) containing combinations of resistance mutations for zidovudine (AZT) (M41L and T215Y) or lamivudine (M184V) have been determined as inhibitor complexes.