Genotypic correlation of a virologic response to lamivudine, stavudine and nevirapine in patients for whom combination therapy had failed
Iranian Journal of Clinical Infectious Diseases. 2008; 3 (4): 215-219
en Inglés
| IMEMR
| ID: emr-87217
ABSTRACT
Resistance is the consequence of mutations that emerge in the viral proteins targeted by antiretroviral agents. Thus, we focused our attention on mutations in HIV-1 reverse transcriptase to define their association with specific NRTIs and NRTI resistance mutations at therapeutic failure. The study population included 5 Iranian HIV-positive patients referring to Counseling Behavioral Modification Center in Shiraz who received a combination of antiretroviral therapy [lamivudine, stavudine and nevirapine]. PBMC DNA was isolated from blood and PCR was performed to produce a 1200 bp amplicon and resolved by electrophoresis on a 0.7% agarose TBE gel, visualized with ethidium bromide. PCR products from HIV-1-infected patients were cloned into pCR2.1TOPO, then sequenced. Finally, sequence data were analyzed. Results showed drug resistance in 2 patients, of whom one had NNRTI resistance mutations [M230G, L234R and K238H] and other had both NRTI [V75M] and NNRTI [F227L] resistance mutations. Confirmation of genetic resistance in HIV-positive patients who show therapy failure can help physicians to change their drug regime in order to achieve better outcome:
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Índice:
IMEMR (Mediterraneo Oriental)
Asunto principal:
Reacción en Cadena de la Polimerasa
/
Estavudina
/
Lamivudine
/
Fármacos Anti-VIH
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Nevirapina
/
Farmacorresistencia Viral Múltiple
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Transcriptasa Inversa del VIH
/
Genotipo
Límite:
Humanos
Idioma:
Inglés
Revista:
Iran. J. Clin. Infect. Dis.
Año:
2008
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