Efeitos da Exenatida e da Sitagliptina durante a indução da periodontite em ratos

• Ano de defesa: 2014
• Autor(a) principal: Moraes, Renata Mendonça [UNESP]
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Estadual Paulista (Unesp)
• Palavras-chave em Português: Periodontite; Diabetes mellitus; Patologia bucal; Periodontitis
• Link de acesso: http://hdl.handle.net/11449/127644; http://www.athena.biblioteca.unesp.br/exlibris/bd/cathedra/31-08-2015/000843762.pdf

Diabetes Mellitus is a high prevalent disease as well as periodontitis. The literature supports a two way relationship between them. A new class of drugs for diabetes treatment, peptide-like glucagon-1 (GLP-1) agonists and dypeptidyl peptidase-4 (DPP-4) inhibitors, has shown pleiotropic effects, like bone anabolic, antiresoptive and antiinflammatory actions. The aim of this study was to evaluate the effect of exenatide (GLP-1 agonist) and sitagliptin (DPP-4 inhibitor) during periodontitis induction in rats. Forty male rats were divided into four groups:1) exenatide group (GE): animals with induced periodontitis that received 3 μg/Kg/day of exenatide subcutaneously; 2) sitagliptin group (GS): animals with induced periodontitis that received 10 mg/Kg/day with sitagliptin orally; 3) periodontal disease group (PD) and 4) control group (CG); both treated with the drug vehicles. Periodontitis was induced by the insertion of ligature around the first molars and the drugs were administered for 28 days. On the day of sacrifice, animals were weigthed and blood were colleccted for serum analysis of GIP, GLP-1 and DPP-4. The mandibles underwent radiographic analysis for assessment of alveolar bone support, and the histological processing for histomorphometric analysis (area of bone loss in the furcation area, linear interproximal bone loss and percentage of collagen). The use of the drugs led to a lower percentage of weight gain and had no influence on glucose levels. Sitagliptin reduced the concentration of DPP-4, while exenatide had no influence on GLP-1 levels. In radiographic and histomorphometric analysis, it was proved the effectiveness of induction of periodontitis, with a significant difference of bone support, alveolar bone loss and percentage of collagen between the PD and CG. On the other hand there was no statistical difference between the test groups and PD group. In conclusion, within the parameters of this study both exenatide and ...