To investigate the effect of whole body exposure to electromagnetic fields on the calcium level of blood and bone in guinea pigs and the role of trace elements as protective agents on the induced effects of the exposure.
50 male guinea pigs were divided into four different exposure groups and one control group. The first group was sacrificed immediatly after the exposure, the second group was sacrificed 15 days after the end of exposure. The third group received after the exposure for 15 days a drug (centrum; to compensate for the lack of trace elements) and was then sacrificed. The fourth group received the drug during the exposure period and was sacrificed after the exposure.
| Exposure | Parameters |
|---|---|
|
Exposure 1:
50 Hz
Exposure duration:
continuous for 30 days
|
|
| Frequency | 50 Hz |
|---|---|
| Type | |
| Exposure duration | continuous for 30 days |
| Measurand | Value | Type | Method | Mass | Remarks |
|---|---|---|---|---|---|
| magnetic flux density | 0.2 mT | - | measured | - | - |
Blood analysis revealed significant increases in the blood calcium level in exposed animals compared to the control group, with the largest increase in the first group. Values of the bone calcium analysis revealed a significant decrease in bone calcium concentration in the first group compared to the control group and a slight repair in the calcium level in the second group. The administration of trace elements on the third and fourth group improved the bone condition compared to the first group. Blood calcium level was inversely proportional to bone calcium concentration.
The results indicate that the calcium has left the bone to the blood. The authors assume a compensatory effect of trace elements after the exposure and protective effects during the exposure.
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