Association of interleukin-1beta and interleukin-1 receptor antagonist gene polymorphisms in Turkish children with atopic asthma
Abstract:Asthma is a complex genetic disease. Genetic and functional characteristics of interleukin (IL)-1 support a role as an asthma locus for the IL-1 family on chromosome 2q12–21. This study was performed to investigate the relationship between polymorphisms of IL-1beta promoter region −511C/T and IL-1 receptor antagonist (IL-1Ra) gene (IL-RN) and bronchial asthma in Turkish children. Children were divided into two groups: (1) bronchial asthma (n = 328) and (2) healthy control (n = 246). Polymerase chain reaction was used to resolve the IL-1beta −511C/T and the IL-1Ra intron 2 polymorphisms. Plasma IgE concentrations were measured by immunoassays, and skin-prick tests were done in children with atopic diseases. The number of genotype CC and C allele in the control groups in IL-1beta −511C/T polymorphisms increased. The number of genotype 1/1 in the asthma groups and genotypes 1/2 and 5/5 and 5 allele in the control groups in IL-1Ra intron 2 gene polymorphism increased. Serum spIgE level increased in the 2/2 genotype in the asthma groups in IL-1Ra intron 2 gene polymorphism. Based on these results, we conclude that there was an association of pediatric asthma with the IL-1beta −511C/T and IL-1Ra intron 2 gene polymorphism. Based on these findings, it has been proposed that IL-1beta −511C/T and IL-Ra intron 2 gene polymorphism are useful markers for prediction of asthma.
Document Type: Research Article
Affiliations: 1: From the Division of Allergy and Pulmonology, Department of Pediatrics, and 2: Division of Medical Genetics, Department of Pediatrics, Aegean University School of Medicine, Izmir, Turkey
Publication date: 2008-09-01
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