Indan Journal of Medical Research Indan Journal of Medical Research Indan Journal of Medical Research Indan Journal of Medical Research
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ORIGINAL ARTICLE
Year : 2017  |  Volume : 145  |  Issue : 6  |  Page : 746-752

Combination of interleukin-10 gene promoter polymorphisms with HLA-DRB1*15 allele is associated with multiple sclerosis


1 Medical Cellular and Molecular Research Center, Gorgan, Iran
2 Medical Cellular and Molecular Research Center; Department of Neurology, 5th Azar Hospital, Golestan University of Medical Sciences, Gorgan, Iran
3 Department of Neurology, Mazandaran University of Medical Sciences, Sari, Iran
4 Department of Neurogenetics, ian Centre of Neurological Research, Tehran, Iran

Correspondence Address:
Majid Shahbazi
Medical Cellular & Molecular Research Center, Golestan University of Medical Sciences, Gorgan
Iran
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/ijmr.IJMR_1225_15

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Background & objectives: Multiple sclerosis (MS) is common in some ethnic groups. Interleukin-10 (IL-10) is a potent anti-inflammatory and immunosuppressive cytokine that may be an important regulator in MS disease pathogenesis. IL-10 promoter includes several single nucleotide polymorphisms and the level of IL-10 expression is related to these polymorphisms. Furthermore, loci within the histocompatibility regions are responsible for susceptibility to MS. The aim of this study was to investigate the association of IL-10 gene promoter polymorphisms and HLA-DRB1*15 allele frequencies with MS susceptibility in an Iranian population. Methods: In this study 336 MS patients and 454 healthy controls were included. Genomic DNA was purified from peripheral blood samples by a standard protocol. Genotyping was performed by the sequence-specific primer polymerase chain reaction method. Results: IL-10 −1082 G/G and IL-10 −819 C/C genotypes were more frequent in MS patients than healthy individuals. DRB1*15 allele showed a higher frequency among MS patients compared to controls. Interpretation & conclusions: The IL-10 and HLA-DRB1*15 polymorphisms were associated with the susceptibility to MS in Iranian patients. Our results suggest that gene-gene interaction of IL-10 polymorphisms and HLA-DRB1*15 alleles may be important factors in the development of MS.


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