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- W2005855274 abstract "Cobalt (Co) is an essential trace element well known as a constituent of vitamin B(12), but different compounds of Co are also described as highly toxic and/or radiotoxic for individuals or the environment. In nuclear power plants, (58)Co and (60)Co are radioactive isotopes of cobalt present as activation products of stable Co and Ni used in alloys. Skin exposure is a current occupational risk in the hard metal and nuclear industries. As biochemical and molecular cobalt-induced toxicological mechanisms are not fully identified, we investigated cobalt toxicity in a model human keratinocyte cell line, HaCaT. In this study, we propose a model to determine the in vitro chemical impact on cell viability of a soluble form of cobalt (CoCl(2)) with or without gamma-ray doses to mimic contamination by (60)Co, to elucidate the mechanisms of cobalt intracellular chemical and radiological toxicity. Intracellular cobalt concentration was determined after HaCaT cell contamination and chemical toxicity was evaluated in terms of cellular viability and clonogenic survival. We investigated damage to DNA in HaCaT cells by combined treatment with chemical cobalt and a moderate gamma-ray dose. Additive effects of cobalt and irradiation were demonstrated. The underlying mechanism of cobalt toxicity is not clearly established, but our results seem to indicate that the toxicity of Co(II) and of irradiation arises from production of reactive oxygen species." @default.
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- W2005855274 date "2010-02-01" @default.
- W2005855274 modified "2023-09-30" @default.
- W2005855274 title "Cobalt toxicity: Chemical and radiological combined effects on HaCaT keratinocyte cell line" @default.
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- W2005855274 doi "https://doi.org/10.1016/j.tiv.2009.08.027" @default.
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