Efeito da gliclazida sobre modelo experimental de doença periodontal induzida em ratos Wistar

Abstract

Periodontal disease is a group of immuno inflammatory diseases that have the potential to affect both the protective fabrics as support teeth, the principal etiologic agent is bacterial biofilm, but the destruction of periodontal tissue is primarily caused by excessive response the host immune system. Recent studies show anti-inflammatory and antioxidant effect of oral antidiabetic drugs belonging to the sulfonylurea class of some inflammatory diseases. The aim of this study was to evaluate the action of gliclazide (GLI), an oral antidiabetic which has shown anti-inflammatory and antioxidant effect on periodontal disease in rats that were induced by ligation. We used 125 Wistar rats were randomly divided into 5 groups of 25 animals each: (NL) inducing periodontal disease has not been submitted but received saline solution; (L) has undergone induction of periodontal disease and received saline; (GLI 1mg) inducing periodontal disease GLU has been made and received 1 mg / kg; (GLI 5mg) was subjected to induction of periodontal disease GLU and received 5 mg / kg; and (GLI 10mg) was subjected to induction of periodontal disease GLU and received 10 mg / kg. The groups were treated with saline (NL and L) or GLI (1 GLY, GLY GLY 5 and 10mg) over a period of 10 days. After sacrificing the animals, which occurred on the eleventh day, the periodontal tissues were removed and passed the following tests: morphometric histopathologic, immunohistochemical, glutathione (GSH), real-time PCR (RT-PCR), malondialdehyde (MDA) and myeloperoxidase (MPO). It is noted that treatment with GLI 1 mg / kg was able to reduce the MDA (p <0.05) IL-1β (p <0.05), TNF-α (p <0.05) and MPO (p <0.05). also decreased MMP-2 expression, RANK, RANKL, cathepsin K, SOD and increased OPG expression. Still in the dose GLI 1mg / kg simultaneously reduced NF-ҡB p65 expression of AKT Pl3K and also compared to the L group (p <0.01). These results show that the GLI dosage of 1mg / kg could provide the anti-inflammatory action induced periodontal disease because the effects of decreased alveolar bone loss, caused a reduction in the levels of pro-inflammatory cytokines and increase expression of anti-agents inflammatory.