HLA Alleles and Dengue Virus Infection in Venezuelan Patients: A Preliminary Study
نویسندگان
چکیده
RESUMEN En áreas endémicas, una pequeña proporción de individuos infectados con el virus dengue desarrollan la fiebre hemorrágica del dengue (FHD), sugiriendo la existencia de factores de resistencia que pudiesen estar jugando un papel importante en el huésped. Este trabajo describe la frecuencia de alelos HLA clase I y II en pacientes con dengue y su relación con las manifestaciones clínicas de la enfermedad. El análisis de la frecuencia de especificidades HLA en los pacientes con dengue mostró frecuencias disminuidas de los alelos B*15, B*49, DRB1*02 y DRB1*03 y frecuencias incrementadas de los alelos B*57 y DRB1*15 comparado con los controles. Cuando los pacientes fueron agrupados y comparados de acuerdo a la severidad de la enfermedad, se observó una susceptibilidad incrementada a la fiebre del dengue clásico (FD) en pacientes con B*57, una susceptibilidad disminuida al desarrollo de la FHD en pacientes A*03 y una susceptibilidad incrementada al desarrollo de la FHD en pacientes con B*40. Aunque las asociaciones observadas proceden de un estudio poblacional caso-control relativamente pequeño y que después de la corrección por múltiples comparaciones se mantuvo únicamente la asociación con DRB1*15, los datos confirman que posiblemente los alelos HLA pueden jugar un papel en la susceptibilidad y/o resistencia a la infección por virus dengue y al desarrollo de la FHD.
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تاریخ انتشار 2009