Expressão de proteínas relacionadas às células mieloides de pacientes com doença peri-implantar

• Autor(a) principal: Teixeira, Mayla Kezy Silva
• Data de Publicação: 2019
• Tipo de documento: Tese
• Idioma: por
• Título da fonte: Biblioteca Digital de Teses e Dissertações da UERJ
• Texto Completo: http://www.bdtd.uerj.br/handle/1/13951
• topic: Dental implant; Biomarkers; Mucositis; Peri-implantitis; Saliva; Implante dentário; Biomarcadores; Mucosite; Peri-implantite; Saliva; CNPQ::CIENCIAS DA SAUDE::ODONTOLOGIA

The general aim of present study was to evaluate the expression of myeloid cell-related proteins from patients having peri-implant mucositis and peri-implantitis; as well as their correlation to clinical parameters of peri-implant disease. The specific aims were to evaluate levels of CSF-1, IL-34, IL-1β, in saliva and peri-implant crevicular fluid from patients having peri-implant disease and their correlation to clinical parameters (study 1) and to evaluate levels of sTREM- 1, PGIMRP1, MMP-8, TIMP-1 and MMP-8/TIMP-1 ratio in saliva from patients having peri-implant mucositis, peri-implantitis, gingivitis and periodontitis, and their correlation to clinical parameters; as well as to analyze the influence of the concomitant existence of periodontitis in the expression of these biomarkers in patients having peri-implant disease (study 2). In study 1, forty-three patients were divided into two groups: (1) peri-implant mucositis and (2) Peri-implantitis; for study 2, in addition to the patients in study 1, patients with gingivitis and periodontitis were added. The following clinical parameters were evaluated: probing depth (PD), clinical attachment level (CAL), visible plaque index and bleeding on probing. Unstimulated whole saliva was collected in the patients in study 1 and 2, and peri-implant crevicular fluid was collected in study 1. Biomarker levels were measured by ELISA. In study 1, regarding full-mouth periodontal parameters, PD from patients having peri-implantitis was significantly higher when compared to patients with mucositis (p = 0.036). In study 2, PD (p <0.001) and CAL (p <0.001) from patients with periodontitis were significantly higher when compared to the other patients. In both study 1 and study 2, regarding the peri-implant clinical characteristics showed that peri-implantitis patients presented higher PD in implants (p = 0.003) compared to the mucositis patients. When comparing the salivary levels of CSF-1, IL-34, IL-1β, sTREM-1, PGLYRP1 and MMP-8, there was no significant difference between groups and no significant correlation of these biomarkers with clinical parameters was found. In study 1, CSF-1 levels were higher in peri-implant crevicular fluid from peri-implantitis compared with mucositis patients (p=0.028), showing potential to discriminate between peri-implantitis and mucositis (AUC = 0.695, 95% CI 0.53 -0.85, p = 0.029). In study 2, concomitant periodontitis resulted in higher significant levels of MMP-8 in patients with peri-implant disease (p = 0.03). Thus, based on these results, we can conclude that the salivary levels of myeloid cell-related proteins showed no difference between patients with peri-implant mucositis and peri-implantitis. There was also no significant correlation between biomarkers salivary levels and clinical parameters. Increased levels of CSF-1 in peri-implant crevicular fluid were found in peri-implantitis patients, thus suggesting an altered osteoclastogenic potential. We did not observe significant differences in levels of sTREM-1, PGLYRP1 and MMP-8 among patients with periodontal and peri-implant diseases. In addition, concomitant periodontitis in patients with peri-implant disease may affect salivary levels of MMP-8.