Influence of an Extremely Low Frequency Magnetic Field (ELF-EMF) on Antioxidative Vitamin E Properties in AT478 Murine Squamous Cell Carcinoma Culture In Vitro.

This study examines the effects of vitamin E and an extremey low frequency electromagnetic field (ELF-EMF) and their combination in different time intervals of exposure of vitamin E (tocopherol) on the AT478 murine squamous cell carcinoma line. This study provides insight into the influence of correlations between ELF-EMF and vitamin E supplementation on antioxidant enzyme activity in malignant cells in vitro. Following vitamin E treatment, activity of the antioxidant enzymes is increased in an exposure-dependent manner compared with the untreated group. Application of ELF-EMF alone or with vitamin E increases both superoxide dismutase isoenzymes and glutathione peroxidase activities in comparison to the control group. The results suggest that ELF-EMF alters antioxidative activities of vitamin E in AT478 tumor cells. This study confirms the role of vitamin E in decreasing susceptibility to lipid peroxidation in AT478 tumor cells. [ABSTRACT FROM AUTHOR]