Genetic Diversity and Antiretroviral Drug Resistance among Drug-Naïve HIV-1 Infected Pregnant Women Attending Antenatal Clinics in Abidjan, Côte d'Ivoire

DOI: 10.4236/wja.2012.22008   PDF   HTML     3,645 Downloads   6,199 Views   Citations

Abstract

To clarify the distribution of HIV-1 subtypes and drug resistance-related mutations, we collected and analysed serum from pregnant women who are ARV drug-naive in Abidjan. The prevalence of HIV-1 subtypes and mutations associated with antiretroviral drug resistance among drug-na?ve HIV-1 infected pregnant women was investigated from plasma of 90 young pregnant primigravida. The HIV-1 pol and env genes were amplified by using primers recognizing conserved viral sequences and sequenced by employing BigDye chemistry. Positions 1 - 99 of the PR and 1 - 350 of the RT genes were analyzed for mutations based on the international AIDS society USA panel. In 39 strains which both genes were sequenced including CFR02_AG 30 (76.9%), subtype A 3 (7.7%), CFR06_cpx 2 (5.1%), CFR09_cpx 1 (2.6%), and discordant sequences suggesting the presence of a few number of recombinant involving CRF02-AG and subtype A 3 (7.7%). None of the major drug resistance mutations was detected. The frequent minor mutations associated drug resistance observed were M36I (52%/96.3%), L10I/R/V (19%/35.2%) and L63P (7%/12.9%). The M36I mutation was widespread in all subtypes. Our result demonstrated first a significant level of viral heterogeneity and then only the presence of minor resistance associated mutations. Our study emphasizes the need of HIV sentinel survey in C?te d'Ivoire and shows that pregnant women who are candidates for receiving antiretroviral drug therapies do not contain naturally occurring or preexisting drug resistance mutations. So such drug therapies are likely to be highly effective in this setting.

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L. Yao Guillaume, Z. Nanga Yessé, K. Hortense, D. Laurent, C. Mian Arsher, L. Serge Joseph and A. Koffi Marie-Chantal, "Genetic Diversity and Antiretroviral Drug Resistance among Drug-Naïve HIV-1 Infected Pregnant Women Attending Antenatal Clinics in Abidjan, Côte d'Ivoire," World Journal of AIDS, Vol. 2 No. 2, 2012, pp. 57-63. doi: 10.4236/wja.2012.22008.

Conflicts of Interest

The authors declare no conflicts of interest.

References

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