Treg and TH17 link to immune response in individuals with peri-implantitis: a preliminary report

Autor(es)

Giro, Gabriela ^[1] ; Tebar, Andressa ^[1] ; Franco, Leonardo ^[1] ; Racy, Danilo ^[1] ; Bastos, Marta Ferreira ^[2] ; Shibli, Jamil Awad ^[1]

Afiliação do(s) autor(es)

^[1] Univ Guarulhos UnG, Dent Res Div, Dept Periodontol & Oral Implantol, Guarulhos, SP - Brazil

^[2] Univ Sao Judas Tadeu, Dept Aging & Elderly Sci, Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: CLINICAL ORAL INVESTIGATIONS; v. 25, n. 3 JUN 2020.
• Citações Web of Science: 0

Resumo

Background and objectives Treg and TH17 cells influence the inflammatory process in periodontal diseases and could also play in a similar pattern, an essential role in immune-inflammatory mechanisms involved in the destruction of the peri-implant tissues, peri-implantitis. Therefore, this study evaluated the levels of ROR gamma T and FOXP3 gene expression in subjects with peri-implantitis and healthy peri-implant tissues. Methods A total of 35 subjects with implant-supported restorations in both diseased and healthy clinical conditions (n= 15 healthy;n= 20 peri-implantitis) were included in this study. Peri-implantitis was defined as probing depth>5 mm, bleeding on probing and/or suppuration, and peri-implant bone loss>4 mm. Peri-implant tissue biopsies were collected for analysis of the mRNA, ROR gamma T, and FOXP3 expression levels. The samples were submitted to total RNA extraction, treatment with DNAse, and cDNA synthesis. Subsequently, real-time PCR reaction was performed to evaluate the levels of ROR gamma T and FOXP3 gene expression to the reference gene. These were analyzed by the non-parametric Mann-Whitney method with a level of significance of 5%. Results Higher gene expression levels of the transcription factors ROR gamma T and FOXP3 were detected in the tissues affected by peri-implantitis when compared with healthy tissues (p< 0.05). Conclusions The present study demonstrated the possible existence of a hybrid TH17-Treg profile, based on the gene expression of transcription factors inducing differentiation of these cells. Further studies must be designed to gain a better understanding of the immunological mechanisms involved in the pathogenesis of peri-implantitis. (AU)

• Processo FAPESP: 08/07154-5 - Avaliação imunológica do tratamento cirúrgico da periimplantite utilizando Er,Cr:YSGG associado a antibioticoterapia sistêmica.
• Beneficiário: Luciana Aparecida de Gouveia Cardoso
• Modalidade de apoio: Bolsas no Brasil - Mestrado