title: Influence of environmental static electric field on antioxidant enzymes activities in hepatocytes of mice.
abstract: With the increasing voltage of direct current transmission line, the intensity of the environmental static electric field has also increased. Thus, whether static electric fields cause biological injury is an important question. In this study, the effects of chronic exposure to environmental static electric fields on some antioxidant enzymes activities in the hepatocytes of mice were investigated. Male Institute of Cancer Research mice were exposed for 35 days to environmental static electric fields of different electric field intensities of 9.2-21.85 kV/m (experiment group I, EG-I), 2.3-15.4 kV/m (experiment group II, EG-II), and 0 kV/m (control group, CG). On days 7, 14, 21, and 35 of the exposure cycle, liver homogenates were obtained and the activities of antioxidant enzymes like superoxide dismutase, glutathione S-transferase, and glutathione peroxidase were determined, as well as the concentration of malonaldehyde. The results revealed a significant increase in superoxide dismutase activity in both EG-I and EG-II on the 7th (P < 0.05) and 35th days (P < 0.01) of the exposure cycle compared to that in the control group. However, the other test indices such as glutathione S-transferase, glutathione peroxidase, and malonaldehyde showed only minimal changes during the exposure cycle. These results revealed a weak relationship between the exposure to environmental static electric fields and hepatic oxidative stress in living organisms.
authors.affiliation: Institute of Environmental Pollution & Control Technology, Zhejiang University, Hangzhou China.
authors.forename: S X
authors.initials: SX
authors.lastname: Wu
authors.affiliation: Institute of Environmental Pollution & Control Technology, Zhejiang University, Hangzhou China.
authors.forename: Y Q
authors.initials: YQ
authors.lastname: Xu
authors.affiliation: Institute of Environmental Pollution & Control Technology, Zhejiang University, Hangzhou China dgq@zju.edu.cn.
authors.forename: G Q
authors.initials: GQ
authors.lastname: Di
authors.affiliation: State Grid Shanghai Municipal Electric Power Company, Shanghai, China.
authors.forename: J H
authors.initials: JH
authors.lastname: Jiang
authors.affiliation: State Grid Shanghai Municipal Electric Power Company, Shanghai, China.
authors.forename: L
authors.initials: L
authors.lastname: Xin
authors.affiliation: State Grid Shanghai Municipal Electric Power Company, Shanghai, China.
authors.forename: T Y
authors.initials: TY
authors.lastname: Wu
mesh_terms: D000818:Animals; D000975:Antioxidants / Q000378:metabolism*; D004574:Electromagnetic Fields; D004777:Environment; D005979:Glutathione Peroxidase / Q000378:metabolism; D005982:Glutathione Transferase / Q000378:metabolism; D022781:Hepatocytes / Q000201:enzymology*; D008099:Liver / Q000201:enzymology; D008297:Male; D051379:Mice; D010084:Oxidation-Reduction; D018384:Oxidative Stress / Q000502:physiology; D055672:Static Electricity; D013482:Superoxide Dismutase / Q000378:metabolism
chemical_list: D000975:Antioxidants; D005979:Glutathione Peroxidase; D013482:Superoxide Dismutase; D005982:Glutathione Transferase