Abstract
The in vitro influence of external electrostatic fields with 200 kV/m tension on the biophysical parameters of the erythrocyte membranes and their ghosts of white outbred rats was studied. The investigation on the parameters of erythrocyte membranes and their ghosts, particularly, their microviscosity, the amount and degree of membrane proteins submersion in lipids, polarity in depth of the membrane bilayer and its viscosity was carried out by the spectrofluorimeteric method using pyrene as a hydrophobic fluorescent probe. The analyses of literature data, findings of the current study and their comparison with the results of our previous works allow of concluding that the in vitro influence of external electrostatic fields with 200 kV/m tension on the erythrocyte membranes and their ghosts occurs at different sites of membrane. It is shown that the preliminary exposure of erythrocytes in external electrostatic fields leads to the changes of the parameters both of a membrane surface layer and the intra-membrane domains. So, the decrease in the strength of peripheral proteins binding to the erythrocyte membranes and the increase in the microviscosity of the lipid bilayer are observed. The influence of the field on the ghosts of intact erythrocytes results in alterations of the studied parameters only of the membrane surface.
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Original Russian Text © G.G. Artsruni, G.V. Sahakyan, G.A. Poghosyan, 2013, published in Biofizika, 2013, Vol. 58, No. 6, pp. 1022–1027.
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Artsruni, G.G., Sahakyan, G.V. & Poghosyan, G.A. The in vitro influence of the external electrostatic field on the physical parameters of erythrocyte membranes. BIOPHYSICS 58, 804–808 (2013). https://doi.org/10.1134/S0006350913060031
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DOI: https://doi.org/10.1134/S0006350913060031