cytotoxicity and oxidative dna damage by nanoparticles in human intestinal caco-2 cells
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the cytotoxic and DNA-damaging effects of several types of nanoparticles and fine particles relevant as food additives (TiO2 and SiO2) or for food packaging (ZnO and MgO) as well as carbon black on human intestinal Caco-2 cells. All particles, except for MgO, were cytotoxic (LDH and WST-1 assay). ZnO, and to lesser extent SiO2, induced significant DNA damage (Fpg-comet), while SiO2 and carbon black were the most potent in causing glutathione depletion.
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