alexa Investigation of an IL-2 polymorphism in patients with different levels of chronic periodontitis.


Journal of Clinical & Cellular Immunology

Author(s): ScarelCaminaga RM, Trevilatto PC, Souza AP, Brito RB, Line SR

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Abstract BACKGROUND: Interleukin-2 (IL-2) is a pro-inflammatory cytokine derived from Th1 cells. This cytokine is involved in B-cell activation and stimulates macrophages, natural killer cells, T-cell proliferation and osteoclast activity. IL-2 has been also implicated in the stimulation of osteoclast activity in bone resorption. OBJECTIVE: In this study the relationship between the polymorphism - 330 (T-->G) in the IL-2 gene and different levels of chronic periodontal disease was investigated. MATERIAL AND METHODS: DNA was extracted from buccal epithelial cells of 113 unrelated adult individuals acting as controls and with different levels of periodontitis. The PCR-RFLP technique was used to investigate the polymorphism in the promoter of IL-2 gene. RESULTS: When comparing the data of three groups of patients (Control, Moderate and Severe) we did not find significant differences between the studied IL-2 polymorphism and severity levels of PD. However, when the Control and Moderate phenotypes were grouped together and compared with genotypes TT vs. TG/GG, a significant difference was observed. CONCLUSION: We conclude that the - 330 (T-->G) polymorphism in the IL-2 gene is associated with the severity of periodontal disease. The results presented in this study suggest an active role of IL-2 in the pathogenesis of periodontal disease.
This article was published in J Clin Periodontol and referenced in Journal of Clinical & Cellular Immunology

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