Estragole: a weak direct-acting food-borne genotoxin and potential carcinogen

Mutation Research
Célia MartinsAntónio S Rodrigues

Abstract

We evaluated the genotoxicity of the food-flavouring agent estragole in V79 cells using the sister chromatid exchange (SCE) assay and the alkaline comet assay. Unexpectedly, we observed an increase in SCE without an exogenous biotransformation system (S9) and a decrease in its presence. Positive results were also observed in the alkaline comet assay without S9, indicating DNA strand breakage. To ascertain repair of damage, we performed the comet assay in V79 cells after two hours of recovery, and observed a reduction of the genotoxic response. Estragole did not produce strand breaks in plasmid DNA in vitro. We then evaluated the formation of DNA adducts in V79 cells by use of the (32)P-postlabelling assay and detected a dose-dependent formation of DNA adducts, which may be responsible for its genotoxicity. We then assayed estragole in the comet assay with two CHO cell lines, a parental AA8 cell line, and an XRCC1-deficient cell line, EM9. Results confirmed the genotoxicity of estragole without biotransformation in both cell lines, although the genotoxicity in EM9 cells compared with that in AA8 cells was not significantly different, suggesting that the XRCC1 protein is not involved in the repair of estragole-induced lesions. Es...Continue Reading

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Citations

Jan 17, 2014·Zebrafish·Sridhara ChakravarthySunil Kumar Sukumaran
Aug 18, 2012·Evidence-based Complementary and Alternative Medicine : ECAM·L GoriF Firenzuoli
Apr 20, 2016·Food and Chemical Toxicology : an International Journal Published for the British Industrial Biological Research Association·Luka Kristanc, Samo Kreft
Apr 14, 2015·Food and Chemical Toxicology : an International Journal Published for the British Industrial Biological Research Association·Maria Llana-Ruiz-CabelloAna M Cameán
Aug 3, 2017·EFSA Journal·UNKNOWN EFSA Scientific CommitteeJan Alexander

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