EFFECT OF ELECTROMAGNETIC FIELDS ON
PERIPHERAL NERVE REGENERATION
Dr. Martin Tomšič
Dr. Fajko Bajrovič
Prof. Dr. Aneta Stefanovska
The effect of electricity on the growth and guidance of peripheral nerve
tissue is the main topic of this tutorial. It was proposed many years ago that
endogenous and exogenous electric currents can enhance limb regenerative
response in lower vertebrates. Since then several experiments have been
conducted, and various aspects of peripheral nerve regeneration under applied
electromagnetic field have been studied. It is well documented that mammalian
neurites in vitro respond to
externally applied fields.
Although a diversity of effects supports the idea that electromagnetic
fields may induce responses from mammalian neurons, and that these depend on
particular processes and the duration of exposure to the fields, the mechanisms
underlying these responses remain unexplored. The validity of extrapolation from
growth cones in vitro to the human
peripheral nervous system in vivo remains
unclear, therefore, and indicates the need for more controlled experiments in
order to evaluate various aspects of regeneration.
The results of some simple experiments in vivo, studying the localized action of exogenous currents will be
presented and discussed. It will be illustrated that certain stimuli can indeed
accelerate the growth of neurites, and that the direction of their growth may
coincide with the applied electric fields.