Article Publish Status: FREE
Abstract Title:

Extract from Armoracia rusticana and its flavonoid components protect human lymphocytes against oxidative damage induced by hydrogen peroxide.

Abstract Source:

Molecules. 2014 ;19(3):3160-72. Epub 2014 Mar 14. PMID: 24637991

Abstract Author(s):

Michala Gafrikova, Eliska Galova, Andrea Sevcovicova, Petronela Imreova, Pavel Mucaji, Eva Miadokova

Article Affiliation:

Michala Gafrikova

Abstract:

DNA damage prevention is an important mechanism involved in cancer prevention by dietary compounds. Armoracia rusticana is cultivated mainly for its roots that are used in the human diet as a pungent spice. The roots represent rich sources of biologically active phytocompounds, which are beneficial for humans. In this study we investigated the modulation of H₂O₂ genotoxicity using the A. rusticana root aqueous extract (AE) and two flavonoids (kaempferol or quercetin). Human lymphocytes pre-treated with AE, kaempferol and quercetin were challenged with H₂O₂ and the DNA damage was assessed by the comet assay. At first we assessed a non-genotoxic concentration of AE and flavonoids, respectively. In lymphocytes challenged with H₂O₂ we proved that the 0.0025 mg·mL⁻¹ concentration of AE protected human DNA. It significantly reduced H₂O₂-induced oxidative damage (from 78% to 35.75%). Similarly, a non-genotoxic concentration of kaempferol (5 μg·mL⁻¹) significantly diminished oxidative DNA damage (from 83.3% to 19.4%), and the same concentration of quercetin also reduced the genotoxic effect of H₂O₂ (from 83.3% to 16.2%). We conclude that AE, kaempferol and quercetin probably act as antimutagens. The molecular mechanismsunderlying their antimutagenic activity might be explained by their antioxidant properties.

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