Print Email Facebook Twitter Effect of eugenol on the genotoxicity of established mutagens in the liver Title Effect of eugenol on the genotoxicity of established mutagens in the liver Author Rompelberg, C.J.M. Evertz, S.J.C.J. Bruijntjes-Rozier, G.C.D.M. van den Heuvel, P.D. Verhagen, H. TNO Voeding Publication year 1996 Abstract The influence of in vivo treatment with eugenol on established mutagens was studied to determine whether eugenol has antigenotoxic potential. The effects of eugenol in rats was investigated in the unscheduled DNA synthesis (UDS) assay with established mutagens and the Salmonella typhimurium mutagenicity assay. In addition, the effect of in vitro treatment with eugenol on benzo[a]pyrene (B[a]P)-induced genotoxicity in human hepatoma cell line Hep G2 was investigated in the single-cell gel electrophoresis assay. The mutagenicity of B[a]P in the S. typhimurium mutagenicity assay was lower in liver S-9 fractions prepared from rats treated with eugenol orally (1000 mg/kg body weight) than in liver S-9 fractions from control rats. Incubation of liver S-9 fractions from eugenol-treated rats with dimethylbenzanthracene (DMBA) had no antimutagenic effect. Eugenol did not modify UDS activity in hepatocytes isolated from rats pretreated with eugenol orally after exposure of these cells in vitro to DMBA and aflatoxin B1. Four different treatment schemes of combinations of B[a]P and eugenol were examined in Hep G2 cells: pre-treatment with eugenol; simultaneous treatment with eugenol and B[a]P; a combination of these (pretreatment/simultaneous treatment); and post-treatment with eugenol. An increase in the genotoxicity of B[a]P was found in Hep G2 cells. No effect of eugenol on the genotoxicity of B[a]P was found with the pre- and post-treatments. It is concluded that the effect of eugenol on genotoxicity induced by established mutagens is not univocal: in vivo treatment of rats with eugenol resulted in a reduction of the mutagenicity of B[a]P in the S. typhimurium mutagenicity assay, while in the UDS assay no effect of eugenol was found. In vitro treatment of cultured cells with eugenol resulted in an increase in genotoxicity of B[a]P. These findings indicate that there is only limited support for the antigenotoxic potential of eugenol in vivo. Subject Toxicologyaflatoxin b1benzo[a]pyrenedimethylbenz[a]anthraceneeugenolmutagenic agentanimal experimentanimal tissuearticlecontrolled studygenotoxicityhepatoma cellhumanhuman celllivermalemetabolic activationmutagenicitynonhumanoral drug administrationratsalmonella typhimuriumunscheduled dna synthesis9,10-Dimethyl-1,2-benzanthraceneAflatoxin B1AnimalsAntimutagenic AgentsBenzo(a)pyreneCarcinoma, HepatocellularCytochrome P-450 Enzyme SystemDNAElectrophoresis, Agar GelEugenolGlutathione TransferaseHumansLiverLiver NeoplasmsMaleMicronucleus TestsMutagenicity TestsMutagensRatsRats, WistarSalmonella typhimuriumTumor Cells, Cultured To reference this document use: http://resolver.tudelft.nl/uuid:478f3df8-3e7a-4507-a1f1-5d0eeefd5142 DOI https://doi.org/10.1016/0278-6915(95)00091-7 TNO identifier 233219 ISSN 0278-6915 Source Food and Chemical Toxicology, 34 (1), 33-42 Document type article Files To receive the publication files, please send an e-mail request to TNO Library.