resistencia a los medicamentos antirretrovirales en pacientes que reciben tratamiento para vih-sida en colombia resistance to antiretrovirals in patients receiving hiv-aids therapy in colombia
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2010
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Abstract
Objetivo. Caracterizar el fenómeno de la resistencia a los diferentes medicamentos antirretrovirales en pacientes en quienes se practicó el estudio de genotipificación en Colombia, durante el período 2000-2007. Diseño. Descriptivo, retrospectivo y basado en el laboratorio. Métodos. Entre los años 2000 y 2007, se obtuvo la secuencia de los genes de la proteasa y transcriptasa inversa del virus de la inmunodeficiencia humana (VIH) de 650 pacientes presuntamente en tratamiento antirretroviral, procedentes de diferentes regiones de Colombia. Las secuencias se procesaron con el programa Geno2pheno resistance, el cual infiere la resistencia a partir de la secuencia. Resultados. El 82,1% de las cepas virales fue resistente a uno o más medicamentos. La frecuencia de resistencia fue mayor para la lamivudina (55,4%), la nevirapina (54,3%) y el efavirenz (52,6%), y más baja para la estavudina (11,0%). El 45,1% fue resistente a la zidovudina. La resistencia a los inhibidores de proteasa osciló entre 30% y 38%. Se observó que la frecuencia de resistencia va en aumento para los inhibidores de la transcriptasa inversa, pero no para los inhibidores de proteasa. Conclusiones. La frecuencia de resistencia fue mayor en los antirretrovirales con una baja barrera genética y en aquéllos cuyo uso se ha incrementado en los últimos años.
Objective. To characterize the resistance to anti-retroviral drugs in patients subject of genotypic sensitivity testing in Colombia during 2000-2007. Design. Descriptive, retrospective, laboratory based. Methods. Between the years 2000 and 2007 the sequences of the HIV protease and transcriptase genes were obtained from 650 patients presumably under antiretroviral treatment throughout the country. The sequences were processed with the program "geno2pheno resistance", which infers the resistance by using the sequences. The results were statistically analyzed. Results. 82.1% of the viral strains were resistant to one or more drugs. The frequency of resistance was higher for lamivudine (55.4%), nevirapine (54.3%), and efavirenz (52.6%), and lower for stavudine (11.0%). 45.1% were resistant to zidovudine. Resistance to protease inhibitors varied between 30% and 38%. We observed that the frequency of resistance is rising for the reverse transcriptase inhibitors but not for the protease inhibitors. Conclusions. The frequency of resistance was higher for the antiretroviral drugs with a lower genetic barrier and for those which use has increased during these last years.
Objective. To characterize the resistance to anti-retroviral drugs in patients subject of genotypic sensitivity testing in Colombia during 2000-2007. Design. Descriptive, retrospective, laboratory based. Methods. Between the years 2000 and 2007 the sequences of the HIV protease and transcriptase genes were obtained from 650 patients presumably under antiretroviral treatment throughout the country. The sequences were processed with the program "geno2pheno resistance", which infers the resistance by using the sequences. The results were statistically analyzed. Results. 82.1% of the viral strains were resistant to one or more drugs. The frequency of resistance was higher for lamivudine (55.4%), nevirapine (54.3%), and efavirenz (52.6%), and lower for stavudine (11.0%). 45.1% were resistant to zidovudine. Resistance to protease inhibitors varied between 30% and 38%. We observed that the frequency of resistance is rising for the reverse transcriptase inhibitors but not for the protease inhibitors. Conclusions. The frequency of resistance was higher for the antiretroviral drugs with a lower genetic barrier and for those which use has increased during these last years.
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| Authors | ;Sandra M Gómez;Patricia Olaya;Francisco J Díaz |
| Journal | diabetology & metabolic syndrome |
| Year | 2010 |
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