To investigate the effects of a 60 Hz electromagnetic field (EMF) on the survival rate of chicken embryos.
EMF-exposure may induce heat shock proteins and these proteins have been shown to play a crucial, role among other thing, in recovery from ischemia. Therefore, it was hypothesized that EMF exposure could activate stress response in vivo and thus may protect myocardial tissue during anoxia.
| Exposure | Parameters |
|---|---|
|
Exposure 1:
60 Hz
Exposure duration:
20 min
|
|
|
Exposure 2:
60 Hz
Exposure duration:
20 min
|
|
|
Exposure 3:
60 Hz
Exposure duration:
20 min
|
|
First series of experiments
| Frequency | 60 Hz |
|---|---|
| Type | |
| Exposure duration | 20 min |
| Exposure source | |
|---|---|
| Chamber | Incubator |
| Measurand | Value | Type | Method | Mass | Remarks |
|---|---|---|---|---|---|
| magnetic flux density | 10 µT | effective value | measured | - | - |
| magnetic flux density | 8 µT | effective value | measured | - | - |
| magnetic flux density | 6 µT | effective value | measured | - | - |
| magnetic flux density | 4 µT | effective value | measured | - | - |
| Frequency | 60 Hz |
|---|---|
| Type | |
| Exposure duration | 20 min |
| Exposure source | |
|---|---|
| Chamber | Incubator |
| Measurand | Value | Type | Method | Mass | Remarks |
|---|---|---|---|---|---|
| magnetic flux density | 8 µT | effective value | measured | - | - |
| Frequency | 60 Hz |
|---|---|
| Type | |
| Exposure duration | 20 min |
| Exposure source | |
|---|---|
| Chamber | Incubator |
| Measurand | Value | Type | Method | Mass | Remarks |
|---|---|---|---|---|---|
| magnetic flux density | 8 µT | effective value | measured | - | plus 8 µT EM noise. |
The obtained data indicate that EM field (60 Hz, 2-10 µT, for 20 minutes) protection was extremely significant. Survival rate was 68.7% in exposed embryos and 39.6% in controls.
In a second set of experiments, embryos were pretreated under several conditions (e.g. a) hyperthermia 43°C, b) 60 Hz, 8 µT without noise, c) 60 Hz, 8 µT plus random noise) prior a 20 min exposure. Embryo survival was 37.7% (control), 57.6% (heated), 69% (60 Hz filed only), and 41.5% (60 Hz filed plus noise).
The authors conclude that athermal EM filed exposure induce stress responses that protect chick embryo myocardium from anoxia damage.
This website uses cookies to provide you the best browsing experience. By continuing to use this website you accept our use of cookies.
