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Association of Interleukin-2, but not Interferon-Gamma, single nucleotide polymorphisms with juvenile idiopathic arthritis

  • M. Maddah [1] ; S. Harsini [1] ; A. Rezaei [1] ; M. Sadr [1] ; S. Zoghi [1] ; M.H. Moradinejad [1] ; V. Ziaee [1] ; N. Rezaei [1]
    1. [1] Tehran University of Medical Sciences

      Tehran University of Medical Sciences

      Irán

  • Localización: Allergologia et immunopathologia: International journal for clinical and investigate allergology and clinical immunology, ISSN-e 1578-1267, ISSN 0301-0546, Vol. 44, Nº. 4, 2016, págs. 303-306
  • Idioma: inglés
  • Texto completo no disponible (Saber más ...)
  • Resumen
    • Background Cytokines, including interleukin-2 (IL-2) and interferon-gamma (IFN-γ), seem to play a role in the pathogenesis of juvenile idiopathic arthritis (JIA). The aim of this study was to investigate the associations of IL-2 and IFN-γ single nucleotide polymorphisms (SNPs) with susceptibility to JIA in an Iranian population.

      Methods Genomic DNA of 54 Iranian patients with JIA and 139 healthy unrelated controls were typed for IL-2 (G/T at −330 and +166) as well as IFN-γ gene (A/T at +874), using polymerase chain reaction with sequence-specific primers method, and compared between patients and controls.

      Results A significantly higher frequency of the IL-2 −330 GG genotype (p < 0.01) was found in the JIA patients compared to the controls. However, the GT genotype at the same position was notably lower than in controls (p < 0.01). Moreover, IL-2 (−330, +166) GT haplotype was more frequent in patients with JIA in comparison with controls. No significant differences was observed between the two groups of case and control for IL-2 (G/T at +166) and IFN-γ (A/T at +874) SNPs.

      Conclusion The results of the current study suggest that certain SNPs of IL-2 gene have association with individuals’ susceptibility to JIA. However, further investigations are required to confirm the results of this study.


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