
208 Electromagnetic Fields in Biology and Medicine
On the other hand, it was shown that the NO-induced elevation of intracellular cGMP had an
activation effect on Na
+
/Ca
2+
exchange in forward mode in heart muscle of snail (Azatian et al.,
1998). Our recent study had shown that the 15min incubation of fresh isolated neuronal ganglia
in 10
−11
M ouabain-containing PS caused the increase of intracellular cGMP and activation of Na
+
/
Ca
2+
exchange in forward mode (Ayrapetyan, 2012). Thus, it can be suggested that the activation of
α
3
receptors by ouabain in case of low intracellular concentration of Na leads to cGMP-activated
Na
+
/Ca
2+
exchange in forward ...