Efecto de las mutaciones en el gen interferón lambda 4 (INFL4) frente a la resistencia innata contra la infección por VIH-1
Fecha
2014-09-15
Autores
Vic-Marfil, Sandra
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Editor
Jaén: Universidad de Jaén
Resumen
[ES]Un polimorfismo genético en interferón lambda 4, está asociado con la
curación espontánea así como con la respuesta al interferón alfa en pacientes
infectados por el Virus de la Hepatitis C (VHC). Este polimorfismo determina la
expresión funcional del gen así como un posible perfil inmunológico más
favorable frente posibles infecciones virales. En este trabajo planteamos la
hipótesis de que este polimorfismo pudiera tener también un papel protector
frente a la infección por el Virus de la Inmunodeficiencia Humana Tipo 1 (VIH-1)
en varones drogadictos infectados por el virus de la hepatitis C. Para ello
hemos optimizado el diagnóstico de dicho polimorfismo así como determinado
las frecuencias genotípicas en una población expuesta al VIH-1 por vía
parenteral en dos subgrupos: VIH-1+/VHC+ (coinfectados) y otro VIH-1-/VHC+
4
(expuestos no infectados). Hemos identificamos que el genotipo TT/TT
presenta resistencia innata a la infección por el VIH-1 (O.R. = 0,667), mientras
que el genotipo heterocigoto y el homocigoto para la deleción aumentaban la
probabilidad de infección (O.R. = 1,653) (p = 0,01). Estos datos contrastan con
los previamente publicados por otros dos equipos internacionales en los que no
observan asociación genética de INFL3 con resistencia a la infección por VIH-1
en parejas serodiscordantes así como en la progresión a SIDA de la infección.
Nuestros datos sugieren que este polimorfismo de INFL4 confiere resistencia
innata a la infección por VIH-1 en nuestro grupo de estudio.
[EN]A genetic polymorphism in interferon lambda 4 is associated with the spontaneous healing as well as with the response to interferon alpha in patients infected by hepatitis C virus (HCV). This polymorphism determines functional expression of the gene as well as a possible immune profile most favorable against possible viral infections. In this paper we propose the hypothesis that this polymorphism may also have a protective role against virus infection of Human Immunodeficiency Virus type 1 (HIV-1) in drug men infected by the Hepatitis C Virus. For this, we have optimized the diagnosis if this polymorphism as well as we have also determinated genotypic frequencies in a population exposed to HIV-1 by parenteral via in two groups: HIV-1+/HCV+ (coinfected) and HIV-1-/HCV+ (exposed uninfected). We have identified that the genotype TT/TT has innate resistance to the infection by HIV-1 (O.R. = 0,667), while the heterozygous genotype and the homozygous genotype for the deletion increased the probability of infection (O.R. = 1,653) (p = 0,01). These data contrast with those previously published by other international teams who do not observe INFL3 genetic association of resistance to infection by HIV in serodiscordant couples as well as the progression to AIDS infection. Our data suggest that this polymorphism confers innate resistance to the infection by HIV-1 in our group of study.
[EN]A genetic polymorphism in interferon lambda 4 is associated with the spontaneous healing as well as with the response to interferon alpha in patients infected by hepatitis C virus (HCV). This polymorphism determines functional expression of the gene as well as a possible immune profile most favorable against possible viral infections. In this paper we propose the hypothesis that this polymorphism may also have a protective role against virus infection of Human Immunodeficiency Virus type 1 (HIV-1) in drug men infected by the Hepatitis C Virus. For this, we have optimized the diagnosis if this polymorphism as well as we have also determinated genotypic frequencies in a population exposed to HIV-1 by parenteral via in two groups: HIV-1+/HCV+ (coinfected) and HIV-1-/HCV+ (exposed uninfected). We have identified that the genotype TT/TT has innate resistance to the infection by HIV-1 (O.R. = 0,667), while the heterozygous genotype and the homozygous genotype for the deletion increased the probability of infection (O.R. = 1,653) (p = 0,01). These data contrast with those previously published by other international teams who do not observe INFL3 genetic association of resistance to infection by HIV in serodiscordant couples as well as the progression to AIDS infection. Our data suggest that this polymorphism confers innate resistance to the infection by HIV-1 in our group of study.
Descripción
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Genética