Avaliação do efeito da lectina Artin M na expressão de fatores de crescimento e citocinas inflamatórias relacionadas ao processo de repação tecidual: Estudo in vitro em macrófagos e fibroblastos gengivais de ratos

• Ano de defesa: 2014
• Autor(a) principal: Florian, Fernanda [UNESP]
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Estadual Paulista (Unesp)
• Palavras-chave em Português: Periodontia; Macrofagos; Regeneração (Biologia); Periodontics
• Link de acesso: http://hdl.handle.net/11449/113934

Currently, several studies in Periodontics and Implantology seek for new procedures and material that optimize the healing process. The healing process involves the proliferation of various cells that act under the coordination of proteins called growth factors and/or cytokines, which have been focused by many researches that have confirmed their special role in the repair process. Artin M is a lectin isolated from Artocarpus integrifolia seed and used in the topical treatment of skin burn injuries, providing accelerated healing and necrosis reduction. Recently, some studies demonstrated that Artin M also stimulates fibroblast proliferation and wound healing in rat oral mucosa. Seeking a better understanding of the lectin action, the aim of this study was to evaluate the effects of Artin M on gene expression and protein production of cytokines and growth factors involved in tissue repair. Primary cultures of rat gingival fibroblasts and macrophages were treated with Artin M at concentrations of 1, 2.5, and 5.0 μg / ml for 4, 8, 12 and 24 h for gene expression analysis by quantitative polymerase chain reaction (RT-qPCR) and at the same concentrations for 48 and 72h for quantitative analysis of protein concentration of growth factors (VEGF and TGFβ ) and inflammatory cytokines ( IL-1 , IL-6 and TNFα ) in culture supernatants by ELISA (Enzyme linked Immunosorbent Assay). The results demonstrated significant (p < 0.05, ANOVA ) expression of IL-1 and TNF-α by macrophages as well as fibroblasts. In relation to the protein levels, gingival fibroblasts produced increased levels of TGFβ, while macrophages synthesized significant levels of TNF-α. The results suggest that Artin M has a role in the increasing gene and protein expression of relevant cytokines in the repair process.