Abstract
This study investigated the bio-effects of 50 Hz MF exposure on some Immunological factors (ACTH, cortisol and glucose levels) in male Guinea pigs. The capacity of 50 Hz Electromagnetic Fields (EMF) to interfere in the weakness of endocrine system has been a relevant fact into the scientific community, since we are more susceptible for this kind of exposure, in modern days. The 60-day-old Guinea pigs, which average of weight was 350-400 g, the Guinea pigs were divided in two groups, one of them was the control group while the other one suffered interference of a variable EMF of 50 Hz, intensity 0.207μT, 4 hours a day, for a 5 consecutive he results were collected by the weight comparison before and after of the exposure period, as well as the cortisol and glucose levels. These facts are strongly linked with the immunological system. After 5 days, the animals were anaesthetized and had their blood withdrew from their hearts. The samples produced serum where ACTH (quimiluminescent method), cortisol (radioimunoassay method) and glucose (oxidative method) levels were evaluated. The results showed that 50 Hz EMF acted on rats without any significant weight change, but affecting ACTH,cortisol and glucose levels in a significant way, 33.06% (p=0.033); 27.00% (p=0.004) and 56.23% (p=0.014) respectively when were compared with the control group. For this reason, EMF is able to change the serum levels of ACTH, cortisol and glucose, possible changing the endocrinological regulations.
Highlights
Over the past few years, considerable attention has been given to the potential bio-effects of magnetic field (MF)
Physical weight: The results show that the initial body weight average of control group (n=15) was 351.33±0.23g and the final average was 364.23± 0.54 g, while the initial body weight average of exposed group (n=15) was 385.34±1.34g and the final average was 399.45± 0.12g
Cortisol concentration: The results showed that the average of control group (n=15) was 4.33±0.02 pg mL 1 while the average of exposed group (n=15) was 5.78±0.11g The cortisol serum concentration, after 5 exposure days, at the exposed group, presented an increase of 27% group B when compared to group A, in a significant way (p=0.004), Fig. 2. (x10-4)
Summary
Over the past few years, considerable attention has been given to the potential bio-effects of magnetic field (MF). Electromagnetic fields became increasingly common constituent of the general and workplace environments early in the 20th century, but some lifestyles and occupations are associated with more than the average amount of exposure to electromagnetic fields. May patterns of exposure in the general and workplace environments be able to be identified with increased intensity and duration of exposure to electromagnetic field. The exaggerated rise on Na rates, K-ATPase, when the organism is subjected to EMF of 60 Hz, results in the increase of stress level on population subjected to this kind of produced radiation, mainly, by the proper home electrics or by workplace environment[2]. There is conflicting evidence about whether exposure to ELF fields can directly alter the structure of DNA and chromatin. Some reports suggest that ELF fields may cause direct effects on the DNA[5]. The population is not free of the low frequency EMF action, radiated from household appliances[6]
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