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International Journal of Genomics
Volume 2014 (2014), Article ID 920491, 5 pages
Research Article

Lack of Association of the Polymorphisms IL-17A (−197G/A) and IL-17F (+7488A/G) with Multibacillary Leprosy in Mexican Patients

1Departamento de Inmunología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, 11340 México, DF, Mexico
2Instituto Nacional de Geriatría, Periférico Sur No. 2767, Col. San Jerónimo Lídice, Del. Magdalena Contreras, 10200 México, DF, Mexico
3Departamento de Trasplantes, División de Inmunogenética, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, 14000 México, DF, Mexico
4Sección de Micología, Hospital General Dr. Manuel Gea González, 14080 México, DF, Mexico
5Facultad de Ciencias Químico Biológicas, Universidad Autónoma de Sinaloa, 80010 Culiacán, SIN, Mexico

Received 18 August 2014; Accepted 19 October 2014; Published 6 November 2014

Academic Editor: Elena Pasyukova

Copyright © 2014 Mónica Escamilla-Tilch et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Background. Leprosy is a chronic infectious disease caused by the intracellular acid-fast bacilli Mycobacterium leprae; it has been determined that genetic factors of the host play an important role in the disease susceptibility. Thus, in this case-control study, we evaluated the possible association between the IL-17A G-197A (rs227593) and IL-17F A7488G (His161Arg, rs763780) gene SNPs and susceptibility to leprosy disease in Mexican population. Methods. Seventy-five leprosy patients and sixty-nine control subjects were included. Both SNPs were genotyped with the polymerase chain reaction-restriction fragment length polymorphism technique. Results. We found nonsignificant differences in genotype and allele frequencies related to IL-17A G-197A (rs227593) and IL-17F A7488G (His161Arg, rs763780) gene SNPs in MB as well as subclinical forms of leprosy disease versus healthy individuals. Conclusions. Since the sample size is not large enough, it is difficult to sustain an association of susceptibility to leprosy with genotypes or allele frequencies of IL-17A G-197A (rs227593) and IL-17F A7488G (His161Arg, rs763780), suggesting that IL-17 polymorphisms have no significant role in the genetic susceptibility to development of this disease in the Mexican Mestizo population.