
222 Electromagnetic Fields in Biology and Medicine
As it was shown in previous data, high-afnity (α
3
) ouabain receptors had more pronounced age
and magnetosensitivities (Figures 14.2 and 14.3). The study of [
3
H]-ouabain 10
−9
M (α
3
receptor
agonist) and 10
−4
M (α
1
receptor agonist) effects on cell hydration in brain cortex and heart muscle
tissues indicated that in brain cortex, the activation of α
3
receptors leads to dehydration while α
1
receptors to the increase of cell hydration (Figure 14.6a). In case of heart muscle, both mentioned
[
3
H]-ouabain concentrations had overhydration effect on tissues, but at 10
−9
M concentration, the
effect w ...