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In vitro and in vivo genotoxic effects of differently sized amorphous SiO2 nanomaterials were investigated. In the alkaline Comet assay (with V79 cells), non-cytotoxic concentrations of 300 and 100–300μg/mL 15nm-SiO2 and 55nm-SiO2, respectively, relevant (at least 2-fold relative to the negative control) DNA damage. In the Alkaline unwinding assay (with V79 cells), only 15nm-SiO2 significantly increased...
Nanomaterials are already used today and offer even greater use and benefits in the future. The progress of nanotechnology must be accompanied by investigations of their potential harmful effects. For airborne nanomaterials, lung toxicity is a major concern and obviously the particle size is discussed as a critical property directing adverse effects. While standard toxicological test methods are generally...
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