Artículos de revistas
Analysis Of The Tgf-β1 Promoter Polymorphism (c - 509t) In Patients With Chronic Periodontitis
Registro en:
Journal Of Clinical Periodontology. , v. 30, n. 6, p. 519 - 523, 2003.
3036979
10.1034/j.1600-051X.2003.00323.x
2-s2.0-0042382903
Autor
De Souza A.P.
Trevilatto P.C.
Scarel-Caminaga R.M.
De Brito Jr. R.B.
Line S.R.P.
Institución
Resumen
Background: A polymorphism in the promoter region of the transforming growth factor beta-1 (TGF-β1) gene was described at position -509. This polymorphism represents a C-to-T base exchange, which creates a YY1 consensus sequence in an area involved with down transcription regulation. This polymorphism has been associated with risk for asthma and allergies. In this study we investigated the association between this polymorphism and chronic periodontitis severity. Methods: Genomic DNA from oral mucosa of 87 Caucasian subjects was amplified by PCR, and digested with Eco81I restriction endonuclease. The alleles were separated by polyacrylamide gel electrophoresis. The differences in genotype distribution from those expected by Hardy-Weinberg equilibrium, and the significance of the differences in observed frequencies of the polymorphism in moderate and severe disease and healthy groups were assessed by the χ2 test. Results: There was a difference in the presence of the different alleles and genotypes among the healthy, moderate and severe periodontitis groups. The allele T was seen at 57.7% in the group with severe periodontitis and 37.8% and 35.4% in the healthy group and moderate periodontitis group, respectively (p = 0.0387). The genotype T/T was found at 38.5% in the group with severe periodontitis, and at a frequency Of 8% in the healthy group (p = 0.0258). 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