Abstract
Microwave radiation effects on passive and dynamic electrical properties and on cell water parameters were studied in muscle cells from muscles of the South American Frog Leptodactilus ocellatus. Microwave exposure of 10 mW/cm2 for a period of 120 minutes produced transient changes in specific membrane resistance Rm, the membrane capacitance Cm and the space constant λ. Those electrical parameters related to the excitation and propagation of the action potential, i.e., the rate constants kr and kK, the maximum rate of rise v̇+ and fall v̇-of the action potential, the limiting membrane conductances (gNa and gK), the peaks of sodium inward and potassium outward ionic currents, the net ionic charge accumulation per action potential and the propagation velocity of the action potential, were all transiently altered. The water membrane permeability and the fraction of osmotically available cell volume were also transiently altered.
The analysis of these parameters has shown that the transient changes evoked by microwave radiation are larger in muscle cells from “winter frogs” than from “summer frogs.” Seasonal differences in the observed transient microwave radiation effects were analyzed. It was concluded that microwave exposure to 10mW/cm2 did not produce permanent effects on electrical and cell water parameters.
This work was supported by the Office of Naval Research, U.S. Department of the Navy; the Comando General de la Armada Argentina and the Comando General del Ejercito, Direccion General de Investigacion y Desarrollo, Ministerio de Defensa, Republica Argentina.
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Portela, A. et al. (1975). Transient Effects of Low-Level Microwave Irradiation on Bioelectric Muscle Cell Properties and on Water Permeability and Its Distribution. In: Michaelson, S.M., Miller, M.W., Magin, R., Carstensen, E.L. (eds) Fundamental and Applied Aspects of Nonionizing Radiation. Springer, Boston, MA. https://doi.org/10.1007/978-1-4684-0760-0_5
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