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Updated: Oct 11, 2026
A Microplate Assay to Assess Chemical Effects on RBL-2H3 Mast Cell Degranulation: Effects of Triclosan without Use of an Organic Solvent
Published on: November 1, 2013
Effect of triclosan on interferon-gamma production and major histocompatibility complex class II expression in human
M Mustafa1, M Bakhiet, B Wondimu
1Department of Pediatric Dentistry, Faculty of Odontology, Karolinska Institutet, Stockholm, Sweden. manal.mustafa@ofa.ki.se
Background, Aims:
The effect of triclosan (2,4,4'-trichloro-2'-hydroxyl-diphenyl ether) on the production of interferon-gamma (IFN-gamma) and the expression of major histocompatibility complex (MHC) class II antigen was studied in human gingival fibroblasts isolated from 4 individuals.
Methods/Results:
All cell lines demonstrated high IFN-gamma production in 24-h cultures of human gingival fibroblasts stimulated by phytohemagglutinin (PHA) (5 microg/ml). Human gingival fibroblasts showed a high expression of MHC class II when stimulated with 500 and 1,000 pg/ml rIFN-gamma in 7-day cultures. Treatment of the cells with triclosan (0.5 microg/ml) reduced both IFN-gamma production and MHC class II expression in human gingival fibroblast cultures. Similar inhibitory effects on IFN-gamma production and MHC class II expression were observed when the anti-inflammatory agent dexamethazone (1 microM) was used.
Conclusion:
The present study further supports the view that the agent has an anti-inflammatory effect in addition to its antibacterial capacity.
