Changes of membrane potential of embryos of Xenopus laevis after influence of the electromagnetic and permanent magnetic fields

H. Yaremkevych, D. Sanagurski

The influence of different types of the magnetic fields - electromagnetic field (EMF) of different powers (20 Wt, 40 Wt, 60 Wt) and ultrahigh frequency (27,14 MHz), variable electromagnetic field (VMF) with frequency 50 Hz by from solenoid and permanent magnetic field (PMF) with tension 2000 Ers. on the changes of electrophysiological parameters of embryonic cells in early development of Xenopus and their survival after magnetization was explored.

The evaluation of influence of these fields on the changes of membrane potential of plazmatic membranes of embryos Xenopus during the period of the synchronous crushing of blastomers (2-32 blastomers) in the early period of development was appraised. It was assigned, that after influence of EMF there is clear dependence of MP on power of the resulted field, that shows up both in giperpolyarization of membrane, and in such parameters of vibrations of MP as amplitude and period. The curve of dynamics fluctuations of MP under the influence of VMF differs a little from the control and only shows up in a steepness, of increasing of MP which considerably exceeds the same one in the control. PMF decrease level of MP (~ on 20 mV) and increase the period (~ on 33 %) and amplitude (~ on 46 %) of fluctuations of level of MP during division of blastomers.

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