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The increasing use of nano-sized materials in our environment, and in many consumer products, dictates new safety concerns. In particular, adequate experimental models are needed to evaluate skin toxicity of metal oxide ions, commonly found in cosmetic and dermatologic preparations. We have addressed the biological effects of topically applied copper oxide (CuO) nanoparticles in human skin organ cultures,...
The aging process and its characterization in keratinocytes have not been studied in depth until now. We have assessed the cellular and molecular characteristics of aged epidermal keratinocytes in monolayer cultures and in skin by measuring their morphological, fluorometric and biochemical properties. Light and electron microscopy, as well as flow cytometry, revealed increase in cell size, changes...
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