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Considering the rapid developments in nanotechnology, scientific research in the field of nanotoxicology is required in order to prevent the dangers of nanotechnology on human health. For this purpose, we tested the cytotoxic effect of ZnO nanoparticle (NP), which is included in many cosmetic products, on human keratinocyte cells (HaCaT). In addition, we evaluated to potentially inhibit this cytotoxic effect with an aquatic plant, Alternanthera reineckii Briq. produced by tissue culture method. The nodal explants of A. reineckii were cultured in Murashige & Skoog basal medium (MS) including the combinations of 0.25-1.25 mg/L Thidiazuron (TDZ) and 0.25 mg/L indole-3-butyric acid (IBA). Maximum number of shoots per explant (22.50 shoots/explant) was obtained in the culture medium with 0.75 mg/L TDZ+0.25 mg/L IBA. The highest shoot length (1.77 cm) was determined in MS medium with 0.25 mg/L TDZ+0.25 mg/L IBA. Acetone and water extracts were obtained from A. reineckii through Soxhlet extraction. The cytotoxic effect of ZnO alone on HaCaT was inhibited by acetone and water extracts. The cell viability, which decreased to 26.04% with the effect of ZnO, increased up to 67.83% with the application of acetone extract. Overall, our results revealed the protective potential of this plant against nanotoxicity induced by ZnO and shed light on future studies. |
