Effect of relative humidity on the movement of rat vibrissae in a 60‐Hz electric field

Weigel, R.J.; Lundstrom, D. L.

doi:10.1002/bem.2250080112

Cited by 15 publications

(9 citation statements)

References 4 publications

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“…Ultimately, it will cause piloerection and cutaneous stimulation, and further lead to anxiety and other psychological effects. This phenomenon is evident in mice and other hirsute animals particularly 40 . The perception thresholds of different organisms for this stimulation caused by surface charges were different.…”

Section: Discussionmentioning

confidence: 84%

Studies on effects of static electric field exposure on liver in mice

Lin

Liu

Xu³

et al. 2018

Sci Rep

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With the development of ultra-high-voltage direct-current transmission, the intensity of static electric field (SEF) under transmission lines increased, which has aroused public attention on its potential health effects. In order to examine effects of SEF exposure on liver, institute of cancer research mice were exposed to SEF with intensities of 27.5 kV/m, 34.7 kV/m and 56.3 kV/m, respectively. In each intensity of SEF exposure, a corresponding sham exposure group was used. Several indices relating to liver function (aspartate aminotransferase (AST) and alanine aminotransferase (ALT)) and oxidative stress (superoxide dismutase (SOD), glutathione peroxidase (GSH-Px) and malondialdehyde (MDA)) were tested after exposure of 7, 14, 21 and 35 days. Results showed that exposure to SEF with intensities of 27.5 kV/m and 34.7 kV/m for 35 days did not significantly influence any detected indices above. Under SEF exposure with intensity of 56.3 kV/m, the SOD activity in liver was significantly increased after exposure of 7 and 14 days. However, no significant increase was found in MDA content as well as the activities of AST and ALT between exposure group and sham exposure group during SEF exposure of 56.3 kV/m. It suggested that from three SEF intensities, only exposure to SEF with intensity of 56.3 kV/m (7 and 14 days) caused a temporary oxidative stress response in liver expressed by the increase in activity of SOD, but it did not produce oxidative damage. This biological effect may be related to the increase of mitochondrial membrane potential of hepatocytes caused by SEF exposure. When the membrane potential exceeds a threshold, Q cycle in mitochondria will be affected, which will result in an increase of superoxide anion concentration and ultimately an oxidative stress.

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Section: Discussionmentioning

confidence: 84%

Studies on effects of static electric field exposure on liver in mice

Lin

Liu

Xu³

et al. 2018

Sci Rep

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“…Although the World Health Organization [] has indicated that exposure to EFs also induces a surface electric charge that can lead to perceptible but non‐hazardous effects, including microshocks, only a limited number of studies have been performed on this issue to date, and therefore, there is insufficient evidence to reach a clear understanding of potential hazardous or beneficial effects of EFs [Hjeresen et al, ; Jaffe et al, ; Marino et al, ; Jaffe et al, ]. Induction of electric currents in the body and perception of EFs on the skin surface can trigger cellular and humoral responses in certain organisms [Weigel and Lundstrom, ; Weigel et al, ; Kato et al, ; Romo et al, , , ]. Some studies have shown that EFs may have therapeutic effects, for example, EFs have been used to treat bone diseases and to stimulate bone growth by increasing alkaline phosphatase activity and calcium incorporation [Bassett et al, ; Takano‐Yamamoto et al, ].…”

Section: Introductionmentioning

confidence: 99%

Time‐dependent changes in the suppressive effect of electric field exposure on immobilization‐induced plasma glucocorticoid increase in mice

Harakawa

Hori

Inoue

et al. 2017

Bioelectromagnetics

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We recently reported that increased glucocorticoid (GC) levels in immobilized mice were suppressed by exposure to a 50-Hz electric field (EF) in kV/m-dependent and exposure duration-dependent manners. Here, we characterized time-dependent changes in the effect of EF exposure in immobilized mice. Using control, EF-alone, immobilization-alone, and co-treated groups, plasma GC levels, and blood properties were first measured (0-60 min) to observe changes induced by each treatment and measured again (60-120 min) to assess recovery from each treatment. The 50-Hz, 10-kV/m EF was formed in a parallel plate electrode. Co-treated mice were exposed to the EF for 60 min for the first measurement and were immobilized for the second half (30-60 min) of the EF exposure period. Plasma GC levels did not change significantly over time in the control and EF-alone groups. GC levels in the immobilization-alone and co-treated groups increased after immobilization, peaking 30 min after the start of immobilization and then decreasing gradually; however, the GC peak was lower in the co-treated group than in the immobilization-alone group (P < 0.05 at 50 and P < 0.001 at 60 min). Red blood cell counts, hemoglobin levels, and hematocrit values increased after immobilization but were not affected by the EF. Our findings indicate that the EF did not shift the peak of the time-dependent increase in plasma GC levels in immobilized mice but simply reduced it. Bioelectromagnetics. 38:272-279, 2017. © 2017 Wiley Periodicals, Inc.

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“…Recently, we reported the curative effects of EF therapy on several types of pain (headache, stiff shoulders, and stomachache) in over a thousand cases [Harakawa et al, 2002]. Reports explaining the mechanism(s) of the response to an exposure to an EF have suggested that either the EF-induced electric current or the perception of the EF through the skin surface act as a trigger on cellular, humoral, or be-havioral responses [Jaffe et al, 1980[Jaffe et al, , 1981Weigel et al, 1987a;Weigel and Lundstrom, 1987b;Kato et al, 1989;Harakawa et al, 2004a,b].…”

Section: Introductionmentioning

confidence: 99%

Effects of a 50 Hz electric field on plasma lipid peroxide level and antioxidant activity in rats

Harakawa

Inoue

Hori

et al. 2005

Bioelectromagnetics

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The effects of exposure to extremely low frequency electric fields (ELF EFs) on plasma lipid peroxide levels and antioxidant activity (AOA) in Sprague-Dawley rats were studied. The test was based on comparisons among rats treated with a combination of the oxidizing agent, 2,2'-azobis(2-aminopropane) dihydrochloride (AAPH) and 50 Hz EF of 17.5 kV/m intensity for 15 min per day for 7 days, AAPH alone, EF alone or no treatment. EF significantly decreased the plasma peroxide level in rats treated with AAPH, similar to treatment by ascorbic acid or the superoxide dismutase. Ascorbic acid increased AOA; however, EF and superoxide dismutase did not change AOA compared with sham exposure in stressed rats. No influence on the lipid peroxide level and AOA in unstressed rats was observed with EF exposure alone. Although the administration of AAPH decreased AOA, this decrease did not change when EF was added. These data indicate that the ELF EF used in this study influenced the lipid peroxide level in an oxidatively stressed rat.

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Effect of relative humidity on the movement of rat vibrissae in a 60‐Hz electric field

Cited by 15 publications

References 4 publications

Studies on effects of static electric field exposure on liver in mice

Studies on effects of static electric field exposure on liver in mice

Time‐dependent changes in the suppressive effect of electric field exposure on immobilization‐induced plasma glucocorticoid increase in mice

Effects of a 50 Hz electric field on plasma lipid peroxide level and antioxidant activity in rats

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