Protective role against hydrogen peroxide and fibroblast stimulation via Ce-doped TiO 2 nanostructured materials

•Fibroblast response depends on nanostructured material preparation methodology.•Ce–TiO2 exerts a cytoprotective effect over fibroblast proliferation against H2O2.•Ce–TiO2 nanostructured materials mimic Catalase activity.•Cytoprotective effect of Ce–TiO2 is associated to the presence high levels of superficial Ce+4.