Effects of subchronic extremely low-frequency electromagnetic field exposure on biochemical parameters in rats

2016 ◽  
Vol 33 (4) ◽  
pp. 365-372 ◽  
Author(s):  
Xue Luo ◽  
Lingjuan Ma ◽  
Peng Gao ◽  
Yanwen Zhang
Keyword(s):  
Electromagnetic Field ◽  
Biochemical Parameters ◽  
Blood Lipids ◽  
Low Frequency ◽  
Sprague Dawley ◽  
Experimental Conditions ◽  
Field Exposure ◽  
Extremely Low Frequency ◽  
Blood Biochemical ◽  
Sprague Dawley Rats

The objective of the present study was to systematically determine the effects of 50 Hertz (Hz) magnetic fields (MFs) on biochemical parameters in rats. Sixty-four adult (5 weeks old, 140–165 g) male Sprague–Dawley rats were randomly divided into four groups: sham, 20 µTesla (µT), 100 µT, and 500 µT 50 Hz MF ( n = 16 in each group). The rats in the MF groups were exposed for 2 h daily for up to 4 weeks. Under these experimental conditions, body weight, organ coefficients, biochemical parameters (blood lipids, myocardial enzymes, liver function, and renal function) were measured. We found that 50 Hz MFs had no significant effects on growth or on the majority of blood biochemical parameters, with the exception of creatinine and cholesterol. However, the changes in creatinine and cholesterol were relatively small and unlikely to be clinically relevant.

scholarly journals Human Gingival Fibroblasts Exposed to Extremely Low-Frequency Electromagnetic Fields: In Vitro Model of Wound-Healing Improvement

2019 ◽  
Vol 20 (9) ◽  
pp. 2108 ◽  
Author(s):  
Erica Costantini ◽  
Bruna Sinjari ◽  
Chiara D’Angelo ◽  
Giovanna Murmura ◽  
Marcella Reale ◽  
...  
Keyword(s):  
Wound Healing ◽  
Electromagnetic Field ◽  
Electromagnetic Fields ◽  
Wound Repair ◽  
Healing Process ◽  
Low Frequency ◽  
Gingival Fibroblasts ◽  
Field Exposure ◽  
Extremely Low Frequency

Several clinical studies have suggested the impact of sinusoidal and pulsed electromagnetic fields in quickening wound repair processes and tissue regeneration. The clinical use of extremely low-frequency electromagnetic fields could represent a novel frontier in tissue repair and oral health, with an interesting clinical perspective. The present study aimed to evaluate the effect of an extremely low-frequency sinusoidal electromagnetic field (SEMF) and an extremely low-frequency pulsed electromagnetic field (PEMF) with flux densities of 1 mT on a model of oral healing process using gingival fibroblasts. An in vitro mechanical injury was produced to evaluate wound healing, migration, viability, metabolism, and the expression of selected cytokines and protease genes in fibroblasts exposed to or not exposed to the SEMF and the PEMF. Interleukin 6 (IL-6), transforming growth factor beta 1 (TGF-β), metalloproteinase 2 (MMP-2), monocyte chemoattractant protein 1 (MCP-1), inducible nitric oxide synthase (iNOS), and heme oxygenase 1 (HO-1) are involved in wound healing and tissue regeneration, favoring fibroblast proliferation, chemotaxis, and activation. Our results show that the exposure to each type of electromagnetic field increases the early expression of IL-6, TGF-β, and iNOS, driving a shift from an inflammatory to a proliferative phase of wound repair. Additionally, a later induction of MMP-2, MCP-1, and HO-1 was observed after electromagnetic field exposure, which quickened the wound-healing process. Moreover, electromagnetic field exposure influenced the proliferation, migration, and metabolism of human gingival fibroblasts compared to sham-exposed cells. This study suggests that exposure to SEMF and PEMF could be an interesting new non-invasive treatment option for wound healing. However, additional studies are needed to elucidate the best exposure conditions to provide the desired in vivo treatment efficacy.

scholarly journals A short-term extremely low frequency electromagnetic field exposure increases circulating leukocyte numbers and affects HPA-axis signaling in mice

2016 ◽  
Vol 37 (7) ◽  
pp. 433-443 ◽  
Author(s):  
Stan de Kleijn ◽  
Gerben Ferwerda ◽  
Michelle Wiese ◽  
Jos Trentelman ◽  
Jan Cuppen ◽  
...  
Keyword(s):  
Electromagnetic Field ◽  
Hpa Axis ◽  
Low Frequency ◽  
Short Term ◽  
Field Exposure ◽  
Extremely Low Frequency

scholarly journals Effect of extremely low frequency electromagnetic field exposure on sleep quality in high voltage substations

2012 ◽  
Vol 9 (1) ◽  
Author(s):  
Tayebeh Barsam ◽  
Mohammad Reza Monazzam ◽  
Ali Akbar Haghdoost ◽  
Mohammad Reza Ghotbi ◽  
Somayeh Farhang Dehghan
Keyword(s):  
Electromagnetic Field ◽  
Sleep Quality ◽  
High Voltage ◽  
Low Frequency ◽  
Field Exposure ◽  
Extremely Low Frequency
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