Cytotoxicity, mutagenicity, and antimutagenicity of the gentisic acid on HTC cells

Drug and Chemical Toxicology
F M L CavalcanteV E P Vicentini

Abstract

Gentisic acid (GA) exhibits antioxidant, anti-inflammatory, and antibiotic activities. This substance can be found in citrus fruits, grapes, olive oil, and peas. Considering that there are few studies in the literature on the toxicity of GA, the present work aimed to investigate its cytotoxic, mutagenic, and antimutagenic activities on HTC cells. GA was diluted in culture medium at the final concentration of 0.08, 0.16, 0.8, 1.6, and 8 μg/mL. The cytotoxicity was determined by the MTT assay and Trypan Blue exclusion method, with methyl methanesulfonate and doxorubicin as positive controls, respectively. The cytokinesis-block micronucleus assay determined the mutagenic/antimutagenic activity with benzo[a]pyrene as positive control. Negative control received culture medium only. GA (0.08-8 μg/mL) was not cytotoxic to HTC cells by the MTT assay nor the Trypan Blue exclusion method as no statistical difference was observed when compared to the control. Concentration of 0.08 and 0.8 μg/mL showed no mutagenic or clastogenic effects, as no significant micronuclei inductions were observed, different from 8 μg/mL, that was mutagenic. Furthermore, none of the concentrations presented an antiproliferative activity. The antimutagenic activ...Continue Reading

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