Evaluation of DEFB1 polymorphisms in individuals with chronic periodontitis and diabetes mellitus type 2 in a population of northeastern Brazil

Special Care in Dentistry : Official Publication of the American Association of Hospital Dentists, the Academy of Dentistry for the Handicapped, and the American Society for Geriatric Dentistry
Rayanne Soraia Aguiar de Melo DiasRenata Cimőes

Abstract

The role of genetic variations in genes related to innate response, as β-defensin-1 (DEFB1), in the context of chronic periodontitis (CP) and diabetes mellitus type 2 (DM2), is still not clear. The present study evaluates the distribution of DEFB1 single nucleotide polymorphisms (SNPs) 5'-untranslated (5'UTR) region and its relation with the CP in DM2 individuals in northeastern Brazilians. Two hundred and eighty individuals participated in the study, being 116 DM2+CP, 95 CP, and 69 healthy individuals. Three known DEFB1 functional SNPs [-52 G > A (rs1799946), -44 C > G (rs1800972), -20 G > A (rs11362)] were genotyped with allele-specific assays. Association was found for the DEFB1 -20 G > A SNP. The G allele, the GA and GG genotypes were significantly (P < 0.05) more frequent in the DM2+CP (59.5%, 50%, and 34.5%, respectively) and CP (61%, 44.2%, and 38.9%, respectively) than in healthy individuals (26.8%, 36.2%, and 8.7%, respectively). The GCG and ACG combinations (-52, -44, -20) were significantly more frequent among DM2+CP and CP than in the healthy individuals. The results indicate that genetic variations of DEFB1 gene (SNP-20: G allele and GA and GG genotypes) and the DEFB1 5'UTR haplotypes (GCG and ACG) may be associate...Continue Reading

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Nov 25, 2020·Journal of Oral Pathology & Medicine : Official Publication of the International Association of Oral Pathologists and the American Academy of Oral Pathology·Zuzanna ŚlebiodaAnna Kowalska

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