Insights about minority HIV-1 strains in transmitted drug resistance mutation dynamics and disease progression
J Antimicrob Chemother, v. 73, n. 7, p. 1930-1934, jul. 2018
Article
em En
| SES-SP, SESSP-IBPROD, SES-SP
| ID: bud-2528
Biblioteca responsável:
BR78.1
ABSTRACT
Objectives:
The presence of minority transmitted drug resistance mutations was assessed using ultra-deep sequencing and correlated with disease progression among recently HIV-1-infected individuals from Brazil.Methods:
Samples at baseline during recent infection and 1 year after the establishment of the infection were analysed. Viral RNA and proviral DNA from 25 individuals were subjected to ultra-deep sequencing of the reverse transcriptase and protease regions of HIV-1.Results:
Viral strains carrying transmitted drug resistance mutations were detected in 9 out of the 25 patients, for all major antiretroviral classes, ranging from one to five mutations per patient. Ultra-deep sequencing detected strains with frequencies as low as 1.6% and only strains with frequencies.20% were detected by population plasma sequencing (three patients). Transmitted drug resistance strains with frequencies,14.8% did not persist upon established infection. The presence of transmitted drug resistance mutations was negatively correlated with the viral load and with CD4+T cell count decay.Conclusions:
Transmitted drug resistance mutations representing small percentages of the viral population do not persist during infection because they are negatively selected in the first year after HIV-1 seroconversion.
Texto completo:
1
Coleções:
06-national
/
BR
Base de dados:
SES-SP
/
SESSP-IBPROD
Idioma:
En
Revista:
J Antimicrob Chemother
Ano de publicação:
2018
Tipo de documento:
Article