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Cytotoxicity of chelating agents used in endodontics and their influence on mmps of cell membranes
Pivatto, Kellin; Pedro, Fabio Luis Miranda; Guedes, Orlando Aguirre; Department of Restorative DentistrySilva, Adriana Fernandes da; Department of Restorative DentistryPiva, Evandro; Pereira, Thiago Machado; Department of Restorative DentistryRosa, Welligton Luiz de Oliveira da; Borges, Alvaro Henrique.
  • Pivatto, Kellin; Universidade de Cuabá. Department of Oral Sciences. Cuiaba. BR
  • Pedro, Fabio Luis Miranda; Universidade de Cuabá. Department of Oral Sciences. Cuiaba. BR
  • Guedes, Orlando Aguirre; Universidade de Cuabá. Department of Oral Sciences. Cuiaba. BR
  • Department of Restorative DentistrySilva, Adriana Fernandes da; Universidade. Biomaterials Development and Control Center. Department of Restorative DentistrySilva, Adriana Fernandes da. Pelotas. BR
  • Department of Restorative DentistryPiva, Evandro; Universidade. Biomaterials Development and Control Center. Department of Restorative DentistryPiva, Evandro. Pelotas. BR
  • Pereira, Thiago Machado; Universidade de Cuabá. Department of Oral Sciences. Cuiaba. BR
  • Department of Restorative DentistryRosa, Welligton Luiz de Oliveira da; Universidade. Biomaterials Development and Control Center. Department of Restorative DentistryRosa, Welligton Luiz de Oliveira da. Pelotas. BR
  • Borges, Alvaro Henrique; Universidade de Cuabá. Department of Oral Sciences. Cuiaba. BR
Braz. dent. j ; 31(1): 32-36, Jan.-Feb. 2020. tab, graf
Article in English | LILACS | ID: biblio-1089272
ABSTRACT
Abstract This study evaluated the cytotoxic effect and the ability to inhibit matrix metalloproteinases (MMP-2 and MMP-9) of 0.2% chitosan (CH) and 1% acetic acid (AA) compared with 17% ethylenediaminetetraacetic acid (EDTA). Cell viability assay was performed according to ISO 10993-5 with mouse fibroblasts (L929). The culture was exposed to 0.2% CH, 1% AA, and 17% EDTA. The chelating agents were evaluated immediately after contact with the cells and after 6 h, 12 h, and 24 h of incubation. Cell viability was analyzed using the 3-(4,5-dimethythiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. Inhibition of the gelatinolytic activity of MMP-2 and MMP-9 was evaluated by gelatin zymography. Different concentrations of CH were evaluated 50 mM, 5 mM, 0.5 mM, and 0.05 mM. EDTA (0.5 mM) was used as a positive control. The results demonstrated that CH and AA had an initial cytotoxic effect, which decreased after 6 h, 12 h, and 24 h, being statistically similar to EDTA (P > 0.05). Additionally, CH at concentrations of 50 mM, 5 mM, and 0.5 mM had an inhibitory effect on MMP-2 and MMP-9, similar to that of the control with EDTA. The chelating agents had no cytotoxic effects after 24 h. MMP-2 and MMP-9 were inhibited by the experimental solutions.
RESUMO
Resumo Este estudo avaliou o efeito citotóxico e a capacidade de inibição das metaloproteinases da matriz extracelular (MMP-2 e MMP-9) pela quitosana 0,2%(CH) e o ácido acético 1% (AA) em comparação com o ácido etilenodiaminotetracético 17% (EDTA). O ensaio de viabilidade celular foi realizado de acordo com a ISO 10993-5 com fibroblastos de camundongo (L929). A cultura foi exposta a CH 0,2%, AA 1% e EDTA 17%. Os agentes quelantes foram avaliados imediatamente após o contato com as células e após 6 h, 12 h e 24 h de incubação. A viabilidade celular foi analisada utilizando o ensaio de brometo de 3- (4,5-dimetitiazol-2-il) -2,5-difeniltetrazólio (MTT). A inibição da atividade gelatinolítica de MMP-2 e MMP-9 foi avaliada por zimografia de gelatina. Diferentes concentrações de CH foram avaliadas 50 mM, 5 mM, 0,5 mM e 0,05 mM. EDTA (0,5 mM) foi usado como controlo positivo. Os resultados demonstraram que CH e AA apresentaram um efeito citotóxico inicial, que diminuiu após 6 h, 12 h e 24 h, sendo estatisticamente similar ao EDTA (P> 0,05). Adicionalmente, CH a concentrações de 50 mM, 5 mM e 0,5 mM tiveram um efeito inibidor sobre MMP-2 e MMP-9, semelhante ao controlo com EDTA. Os agentes quelantes apresentaram efeitos não citotóxicos após 24 h. MMP-2 e MMP-9 foram inibidas pelas soluções experimentais.
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Full text: Available Index: LILACS (Americas) Main subject: Matrix Metalloproteinases / Endodontics Limits: Animals Language: English Journal: Braz. dent. j Journal subject: Dentistry Year: 2020 Type: Article Affiliation country: Brazil Institution/Affiliation country: Universidade de Cuabá/BR / Universidade/BR

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Full text: Available Index: LILACS (Americas) Main subject: Matrix Metalloproteinases / Endodontics Limits: Animals Language: English Journal: Braz. dent. j Journal subject: Dentistry Year: 2020 Type: Article Affiliation country: Brazil Institution/Affiliation country: Universidade de Cuabá/BR / Universidade/BR