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Apoptotic gene expression profiles and DNA damage levels in rat liver treated with perfluorooctane sulfonate and protective role of curcumin.
International Journal of Biological Macromolecules 2017 November
Perfluorinated compounds (PFCs ) such as PFOS and PFOA, are xenobiotics that can be detected worldwide in the environment and humans. PFOS (C8 F17 SO3 - ) is a fluorinated organic compound has been used for decades in industrial and commercial products. We investigated the genotoxic and apoptotic impact of PFOS in rat liver using comet assay, micronucleus test and apoptotic gene expression methods for caspase 3, caspase 8 and the protective role of curcumin on the PFOS- induced damage under chronic exposure. In this study, rats were treated either with three different PFOS doses only (0.6, 1.25 and 2.5mg/kg) or one dose of curcumin (80mg/kg) or three different doses of PFOS combined with 80mg/kg dose of curcumin by gavage for 30days at 48h intervals. We evaluated the DNA damage via comet assay and micronucleus test. Doses of PFOS increased micronucleus frequency (p<0.05) and strongly induced DNA damage in liver in two different parameters; i: the damaged cell percentage and ii: genetic damage index. Curcumin prevented the formation of DNA damage induced by PFOS and curcumin substance applied with PFOS caused a decrease in the micronucleus frequency. PFOS increased apoptotic gene expression but curcumin decreased the expression levels of caspase 3 and 8.
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