Cytotoxicity of dimethyl sulfoxide (DMSO) in direct contact with odontoblast-like cells

Author(s)

Hebling, J. ^[1] ; Bianchi, L. ^[1] ; Basso, F. G. ^[1] ; Scheffel, D. L. ^[1] ; Soares, D. G. ^[1] ; Carrilho, M. R. O. ^[2] ; Pashley, D. H. ^[3] ; Tjaderhane, L. ^{[4, 5]} ; de Souza Costa, C. A. ^[6]

Affiliation

^[1] UNESP Univ Estadual Paulista, Araraquara Sch Dent, Dept Pediat Dent & Orthodont, BR-14801903 Araraquara, SP - Brazil

^[2] UNIAN, Anhanguera Univ Sao Paulo, Sao Paulo - Brazil

^[3] Georgia Regents Univ, Coll Dent Med, Dept Oral Biol, Augusta, GA - USA

^[4] Univ Oulu, Oulu Univ Hosp, Med Res Ctr Oulu, Inst Dent, Oulu - Finland

^[5] Univ Oulu, Oulu - Finland

^[6] UNESP Univ Estadual Paulista, Araraquara Sch Dent, Dept Physiol & Pathol, BR-14801903 Araraquara, SP - Brazil

• Document type: Journal article
• Source: Dental Materials; v. 31, n. 4, p. 399-405, APR 2015.
• Web of Science Citations: 21

Abstract

Objectives. To evaluate the cytotoxicity of dimethyl sulfoxide (DMSO) on the repair-related activity of cultured odontoblast-like MDPC-23 cells. Methods. Solutions with different concentrations of DMSO (0.05, 0.1, 0.3, 0.5 and 1.0 mM), diluted in culture medium (DMEM), were placed in contact with MDPC-23 cells( 5 x 104 cells/cm(2)) for 24 h. Eight replicates (n = 8) were prepared for each solutions for the following methods of analysis: violet crystal dye for cell adhesion (CA), quantification of total protein (TP), alizarin red for mineralization nodules formation (MN) and cell death by necrosis (flow cytometry); while twelve replicates (n = 12) were prepared for viable cell number (Trypan Blue) and cell viability (MTT assay). Data were analyzed by ANOVA and Tukey or Kruskal-Wallis and Mann-Whitney's tests (p < 0.05). Results. Cell viability, adhesion and percentage of cell death by necrosis were not affected by DMSO at any concentration, with no statistical significant difference among the groups. A significant reduction in total protein production was observed for 0.5 and 1.0 mM of DMSO compared to the control while increased mineralized nodules formation was seen only for 1.0 mM DMSO. Significance: DMSO caused no or minor cytotoxic effects on the pulp tissue repair-related activity of odontoblast-like cells. (C) 2015 Academy of Dental Materials. Published by Elsevier Ltd. All rights reserved. (AU)

• FAPESP's process: 12/08866-4 - Transdentinal cytotoxicity and effect of carbodiimide (EDC) on resin-dentin bond degradation: in vitro and in vivo studies
• Grantee: Josimeri Hebling Costa
• Support Opportunities: Regular Research Grants