Authors
Abstract
Background: Allergic rhinitis is a chronic inflammatory disease of the upper airways, this inflammatory response in the nasal mucosa includes an immediate IgE-mediated response. IL-18, a member of the IL-1 family, is known for influencing the balance of IgE level. In present study this problem is investigated that whether immunoglobulin (Ig) E levels in serum are associated with -607A/C SNPs of IL18 promoter.
Materials and Methods: Genotyping for -607A/C SNPs of IL18 promoter was performed using 133 patients with AR and 62 healthy control volunteers from Chaharmahal va Bakhtiari province then serum levels of total IgE were determined by ELISA method. Statistical analysis were carried out using T test and ANOVA test by SPSS version 19.
Results: level of total IgE in Serum were significantly greater in allergic rhinitis patients than controls (P=0.017). In addition, the total serum IgE level of the individuals with heterozygous genotype of IL18 (-607AC) were significantly higher regarding other investigated polymorphisms (P=0.045).
Conclusion: According to the results of this study, it seems that the IL18 gene polymorphism -607A/C is associated with IgE levels and susceptibility of allergic rhinitis.
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