Influence of chromium on the natural antioxidant barrier

• Autorzy: Dlugosz A. , Rembacz K. P. , Pruss A. , Durlak M. , Lembas-Bogaczyk J.
• Języki publikacji: EN

Abstrakty

EN

Hexavalent chromium (VI) compounds are widely used in industry, while trivalent chromium (III) is used as a nutritional supplement. CrVI is generally considered more toxic and carcinogenic than its trivalent form and the toxicity of this metal is associated with free radical processes generating reactive oxygen species (ROS). The detailed mechanism of ROS formation by chromium and its compounds remains largely unknown. This paper investigates the effects of both chromium III and VI on the activity of antioxidant enzymes: superoxide dismutase (SOD), glutathione peroxidase (GPx), the level of reduced glutathione (GSH), and the ferric-reducing ability of plasma (FRAP) in human blood. Our study shows that chromium III does not affect the levels of GSH, but it decreases FRAP. It also affects SOD in a dose-dependent manner while having no effect on the activity of GPx. CrVI, on the other hand, causes a decrease of SOD activity, increases the activity of GPx, reduces the level of GSH and, similarly to CrIII, shows a negative effect on FRAP.

• Wydawca: -
• Czasopismo: Polish Journal of Environmental Studies
• Rocznik: 2012
• Tom: 21
• Numer: 2
• Opis fizyczny: p.331-335,fig.,ref.

Twórcy

autor

Dlugosz A.

• Chair and Department of Toxicology, Wrocław Medical University, Traugutta 57/59, 50-417 Wrocław, Poland

autor

Rembacz K. P.

• Chair and Department of Toxicology, Wrocław Medical University, Traugutta 57/59, 50-417 Wrocław, Poland

autor

Pruss A.

• Chair and Department of Toxicology, Wrocław Medical University, Traugutta 57/59, 50-417 Wrocław, Poland

autor

Durlak M.

• Chair and Department of Toxicology, Wrocław Medical University, Traugutta 57/59, 50-417 Wrocław, Poland

autor

Lembas-Bogaczyk J.

• Chair and Department of Toxicology, Wrocław Medical University, Traugutta 57/59, 50-417 Wrocław, Poland

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