The IFNG rs1861494 Single Nucleotide Polymorphism Is Associated with Protection against Tuberculosis Disease in Argentina
AbstractInterferon gamma (IFNG) plays a key role during Mycobacterium tuberculosis (Mtb) infection, and several polymorphisms located in its gene are associated with risk of tuberculosis in diverse populations. Nevertheless, the genetic resistance/susceptibility to tuberculosis in Argentina is unknown. The IFNG rs1861494 polymorphism (G→A) was reported to alter the binding of transcription factors to this region, influencing IFNG production. Using a case-control study, we found an association between the AA and AG genotypes and tuberculosis resistance (AA vs. GG: odds ratio (OR) = 0.235, p-value = 0.012; AG vs. GG: OR = 0.303, p-value = 0.044; AA vs. AG: OR = 0.776, p-value = 0.427; AA + AG vs. GG: OR = 0.270, p-value = 0.022). Moreover, Mtb-antigen stimulated peripheral blood mononuclear cells (PBMCs) from healthy donors and AA carriers secreted the highest amounts of IFNG in culture supernatants (p-value = 0.034) and presented the greatest percentage of CD4+IFNG+ lymphocytes (p-value = 0.035), in comparison with GG carriers. No association between the polymorphism and clinical parameters of tuberculosis severity was detected. However, our findings indicate that the rs1861494 single nucleotide polymorphism (SNP) could be considered as a biomarker of tuberculosis resistance in the Argentinean population. View Full-Text
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Rolandelli, A.; Pellegrini, J.M.; Amiano, N.O.; Santilli, M.C.; Morelli, M.P.; Castello, F.A.; Tateosian, N.L.; Levi, A.; Casco, N.; Palmero, D.J.; García, V.E. The IFNG rs1861494 Single Nucleotide Polymorphism Is Associated with Protection against Tuberculosis Disease in Argentina. Genes 2018, 9, 46.
Rolandelli A, Pellegrini JM, Amiano NO, Santilli MC, Morelli MP, Castello FA, Tateosian NL, Levi A, Casco N, Palmero DJ, García VE. The IFNG rs1861494 Single Nucleotide Polymorphism Is Associated with Protection against Tuberculosis Disease in Argentina. Genes. 2018; 9(1):46.Chicago/Turabian Style
Rolandelli, Agustín; Pellegrini, Joaquín M.; Amiano, Nicolás O.; Santilli, María C.; Morelli, María P.; Castello, Florencia A.; Tateosian, Nancy L.; Levi, Alberto; Casco, Nicolás; Palmero, Domingo J.; García, Verónica E. 2018. "The IFNG rs1861494 Single Nucleotide Polymorphism Is Associated with Protection against Tuberculosis Disease in Argentina." Genes 9, no. 1: 46.
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