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In vitro cytotoxic and non-genotoxic effects of gutta-percha solvents on mouse lymphoma cells by single cell gel (comet) assay
Ribeiro, Daniel Araki; Marques, Mariângela Esther Alencar; Salvador, Daisy Maria Fávero.
  • Ribeiro, Daniel Araki; São Paulo State University. School of Medicine of Botucatu. Department of Pathology. Center for Genotoxin and Carcinogen Evaluation. Botucatu. BR
  • Marques, Mariângela Esther Alencar; São Paulo State University. School of Medicine of Botucatu. Department of Pathology. Center for Genotoxin and Carcinogen Evaluation. Botucatu. BR
  • Salvador, Daisy Maria Fávero; São Paulo State University. School of Medicine of Botucatu. Department of Pathology. Center for Genotoxin and Carcinogen Evaluation. Botucatu. BR
Braz. dent. j ; 17(3): 228-232, 2006. graf, tab
Article in English | LILACS | ID: lil-442372
ABSTRACT
Chloroform and eucalyptol are widely used in clinical dentistry as gutta-percha solvents. However, these compounds may represent a hazard to human health, especially by causing injury to genetic apparatus and/or inducing cellular death. In this study, the genotoxic and cytotoxic potentials associated with exposure to chloroform and eucalyptol were assessed on mouse lymphoma cells in vitro by the single cell gel (comet) assay and trypan blue exclusion test, respectively. Both gutta-percha solvents proved to be cytotoxic at the same levels in concentrations of 2.5, 5 and 10 muL/mL (p<0.05). On the other hand, neither of the solvents induced DNA breakage. Taken together, these results suggest that although both tested compounds (chloroform and eucalyptol) are strong cytotoxicants, it seems that they are not likely to increase the level of DNA damage on mammalian cells.
RESUMO
Clorofórmio e eucaliptol são amplamente utilizados na clínica odontológica como solventes de guta-percha. Entretanto, estes compostos podem representar um perigo à saúde humana, especialmente por causar danos ao aparelho genético e/ou induzir morte celular. Neste estudo, o potencial genotóxico e citotóxico associado à exposição ao clorofórmio e eucaliptol foram avaliados em células de linfoma murino in vitro pelo teste de células individualizadas (teste do cometa) e pelo teste do azul de tripan, respectivamente. Ambos os solventes de guta-percha provaram ser citotóxicos nos mesmos níveis em concentrações de 2,5, 5 e 10 miL/mL (p<0.05). Por outro lado, nenhum dos dois solventes induziu danos ao DNA. Em conclusão, esses resultados sugerem que ambos os compostos testados (clorofórmio e eucaliptol) são potentes citotoxinas, mas não representam um fator que aumenta o nível de danos no DNA em células de mamíferos.
Subject(s)
Full text: Available Index: LILACS (Americas) Main subject: Solvents / Chloroform / Cyclohexanols / Monoterpenes / Eucalyptus Limits: Animals Language: English Journal: Braz. dent. j Journal subject: Dentistry Year: 2006 Type: Article / Project document Affiliation country: Brazil Institution/Affiliation country: São Paulo State University/BR

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Full text: Available Index: LILACS (Americas) Main subject: Solvents / Chloroform / Cyclohexanols / Monoterpenes / Eucalyptus Limits: Animals Language: English Journal: Braz. dent. j Journal subject: Dentistry Year: 2006 Type: Article / Project document Affiliation country: Brazil Institution/Affiliation country: São Paulo State University/BR