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• W2000453615 abstract "En la lepra, el análisis de segregación en varias poblaciones humanas sugiere una relación de alelos particulares de los antígenos leucocitarios humanos (HLA) clase II con el desarrollo de las diferentes formas de la enfermedad. Con el objetivo de determinar si algún alelo de las moléculas de HLA clase II en la población de la provincia del Chaco, Argentina, podrían estar comprometidos en el desarrollo de algunas de las formas de lepra multibacilar (MB) y/o paucibacilar (PB), se determinó la frecuencia de los alelos de los loci DR y DQ en pacientes con lepra. Se analizaron 89 muestras de pacientes con lepra (MB 70; PB 19) y 112 controles sanos. Se determinaron los alelos del locus DR y DQ, utilizando amplificación genérica por reacción en cadena de la polimerasa (PCR) e hibridación reversa con oligonucleótidos específicos (LIPA KEY-INNOGENETICS). Se encontró una disminución en la frecuencia del alelo DQB1*0201/0202/0203 en pacientes con lepra multibacilar y disminución del alelo DRB1*04 en pacientes con lepra paucibacilar respecto a controles, ambos con significación estadística. Según los resultados observados, DQB1*0201/0202/0203 podría ser un alelo de protección en la forma multibacilar de la lepra y el alelo DRB1*04 estaría relacionado con protección en lepra paucibacilar. Pensamos que las diferencias halladas con otras poblaciones caucásicas reportadas por otros autores se deben a que la población chaqueña de origen caucásico tiene una fuerte mezcla con nativos de América del Sur, guaraníes y tobas. Segregation analyses in several populations have suggested a relationship between specific human leukocyte antigen (HLA) class II alleles and the development of different types of leprosy. The aim of this study was to determine the frequency of HLA class II DR and DQ alleles among leprosy patients in Chaco province, northeast Argentina, in an effort to determine whether these alleles might be involved in the development of the multibacillary (MB) and paucibacillary (PB) forms of leprosy. Samples from 89 leprosy patients (MB 70, PB 19) and 112 healthy control subjects were analyzed. The HLA-DRB1 and HLA-DQB1 alleles were determined by PCR amplification and reverse hybridization with sequence-specific oligonucleotide probes, and analyzed with the INNO-LiPA typing system and LiPA software. DQB1*0201/0202/0203 in patients with MB leprosy and DRB1*04 in patients with PB leprosy were detected at significantly lower frequencies as compared with the normal controls. These data indicate that DQB1* 0201/0202/0203 may be a protective factor in MB leprosy and DRB1*04 in PB leprosy. We attribute the differences between our findings and those of other authors to the fact that the Caucasian inhabitants of Chaco include a considerable mixture of South American natives (Guaraníes and Tobas)." @default.
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• W2000453615 date "2007-11-01" @default.
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• W2000453615 title "Papel de las moléculas HLA-DR y HLA-DQ en la lepra multibacilar y paucibacilar en la provincia del Chaco; Argentina" @default.
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• W2000453615 doi "https://doi.org/10.1157/13112938" @default.
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