01674nas a2200109   4500000000100000008004100001245026000042856007700302300001200379490000600391520116700397       2019                            d00a Leprosy is a chronic, infectious disease, caused by Mycobacterium leprae, Mycobacterium lepromatosis or both, which affects the peripheral nervous system and the skin. Activation of cellular immunity in infected individuals depends on antigen recognition  uhttp://www.apjbg.com/ch/reader/view_abstract.aspx?file_no=2019117&flag=1  a133-1370 v33 aLeprosy is a chronic, infectious disease, caused by Mycobacterium leprae, Mycobacterium lepromatosis or
both, which affects the peripheral nervous system and the skin. Activation of cellular immunity in infected individuals depends on antigen recognition, which involves relevant HLA-Class II alleles. Therefore, the objective of this study was to determine HLA-Class II allele frequencies (HLA-DRB1and-DQB1)in Mexican Mestizo
leprosy patients and compare them with healthy controls, in order to define their role in the genetic susceptibility to this infection.The genomic DNA of each participant was obtained from peripheral blood, using the salting-out method. PCR amplification and hybridization ofHLA-class II alleleswas made by PCR-SSO. The results showed that frequencies of HLA-DRB1*15(Pc =0.003, OR=3.3 95%CI=1.53-7.33), HLA-DQB1*05(Pc
=0.00003, OR=6.03 95%CI=2.49-14.61) and HLA-DQB1*06 (Pc =0.007, OR=2.89, 95%CI=1.38-6.04)
were significantly higher among leprosy patients than those of healthy controls. The study suggests that HLADRB1*15, HLA-DQB1*05, and HLA-DQB1*06 are associated with leprosy susceptibility in the Mexican Mestizo population.