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Prevalence, genetic diversity and antiretroviral drugs resistance-associated mutations among untreated HIV-1-infected pregnant women in Gabon, central Africa.
- Source :
-
BMC infectious diseases [BMC Infect Dis] 2012 Mar 20; Vol. 12, pp. 64. Date of Electronic Publication: 2012 Mar 20. - Publication Year :
- 2012
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Abstract
- Background: In Africa, the wide genetic diversity of HIV has resulted in emergence of new strains, rapid spread of this virus in sub-Saharan populations and therefore spread of the HIV epidemic throughout the continent.<br />Methods: To determine the prevalence of antibodies to HIV among a high-risk population in Gabon, 1098 and 2916 samples were collected from pregnant women in 2005 and 2008, respectively. HIV genotypes were evaluated in 107 HIV-1-positive samples to determine the circulating subtypes of strains and their resistance to antiretroviral drugs (ARVs).<br />Results: The seroprevalences were 6.3% in 2005 and 6.0% in 2008. The main subtype was recombinant CRF02&#95;AG (46.7%), followed by the subtypes A (19.6%), G (10.3%), F (4.7%), H (1.9%) and D (0.9%) and the complex recombinants CRF06&#95;cpx (1.9%) and CRF11&#95;cpx (1.9%); 12.1% of subtypes could not be characterized. Analysis of ARVs resistance to the protease and reverse transcriptase coding regions showed mutations associated with extensive subtype polymorphism. In the present study, the HIV strains showed reduced susceptibility to ARVs (2.8%), particularly to protease inhibitors (1.9%) and nucleoside reverse transcriptase inhibitors (0.9%).<br />Conclusions: The evolving genetic diversity of HIV calls for continuous monitoring of its molecular epidemiology in Gabon and in other central African countries.
- Subjects :
- Adolescent
Adult
Female
Gabon epidemiology
Genotype
HIV Antibodies blood
HIV-1 drug effects
HIV-1 genetics
HIV-1 isolation & purification
Humans
Middle Aged
Molecular Epidemiology
Mutation, Missense
Pregnancy
Pregnancy Complications, Infectious virology
Seroepidemiologic Studies
Young Adult
Anti-Retroviral Agents pharmacology
Drug Resistance, Viral
Genetic Variation
HIV Infections epidemiology
HIV Infections virology
HIV-1 classification
Pregnancy Complications, Infectious epidemiology
Subjects
Details
- Language :
- English
- ISSN :
- 1471-2334
- Volume :
- 12
- Database :
- MEDLINE
- Journal :
- BMC infectious diseases
- Publication Type :
- Academic Journal
- Accession number :
- 22433277
- Full Text :
- https://doi.org/10.1186/1471-2334-12-64