High level of primary drug resistance in Mali


Haidara A, A Chamberland, M Sylla, SA Aboubacrine, M Cissé, HA Traoré, MY Maîga, A Tounkara, V-K Nguyen, C Tremblay. High level of primary drug resistance in Mali. HIV Medicine 2010; 11(6): 404-411.
ray ban aviator sunglasses


As access to antiretroviral drugs increases in developing countries, it will become increasingly important to monitor the emergence of resistance and to define the molecular pathways involved to identify optimal therapeutic regimens.
air jordan Best Price

We performed genotypic resistance testing on plasma obtained from 101 HIV-infected treatment-naïve individuals from Mali. Genotyping was carried out using the Virco protocols and HXB2 was used as the reference strain.


CRF02_AG was the most common subtype, present in 71.3% of our patient population. Other subtypes included B, C, G, CRF06_CPX, CRF09_CPX, CRF01_AE, A2/CRF16_A2D, A1 and CRF13_CPX. A total of 9.9% [95% confidence interval (CI) 6.9–12.9%] of patients had at least one resistance mutation. The prevalences of mutations conferring resistance to nucleoside reverse transcriptase inhibitors (NRTIs), nonnucleoside reverse transcriptase inhibitors (NNRTIs) and protease inhibitors (PIs) were 5% (95% CI 0.7–9.2%), 6% (95% CI 1.3–10.6%) and 0%, respectively. The most frequent mutations were T215A/Y for NRTIs and K103N/T for NNRTIs. One patient harboured three NRTI resistance mutations and one NNRTI mutation. This is the first reported case of multi-drug-resistant viral transmission in Mali. Polymorphisms at protease codons 10I/V and 33F potentially associated with resistance were observed in 18.8% and 1% of patients, respectively. Several polymorphisms in the C-terminal domain of reverse transcriptase were observed: A371V (in 63.4% of patients), G335D (76.2%), E399D (10.9%) and G333E (1%).
Oakley sunglasses Reduced

Primary resistance was seen in 9.9% of subjects, which is higher than previously reported in Mali. Taking into consideration other polymorphisms in protease such as L10I/V and 33F, primary resistance could reach 28.7% (95% CI 19.9–37.5%). Our study reflects the need to monitor the evolution of resistance on a regular basis and trends of transmitted resistance.
Oakley sunglasses For Sale

Purchase Oakley sunglasses
Keywords: HIV subtypes, mutations, primary resistance


Leave a Reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.