Voltage pulsation of sickle erythrocytes enhances membrane permeability to oxygen |
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Authors: | Makoto Kaibara Tian Yow Tsong |
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Institution: | Department of Physiological Chemistry, The Johns Hopkins University School of Medicine, Baltimore, MD 21205 U.S.A. |
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Abstract: | Treatment of sickle red cells (SS homozygous) with a voltage pulse of less than 0.8 kV/cm and duration of 20 μs caused a change in the cell membrane, so as to facilitate the permeation of oxygen. The unsickling of the treated cells after a re-introduction of oxygen took place at a much faster rate. Neither leakages of Na+ and K+, nor a change in the cell volume occurred as the result of the low voltage pulsation. The effect of the voltage treatment persisted for hours at 25°C but disappeared rapidly at 37°C. The result suggests that a selective modification of membrane permeability may be achieved by the voltage pulsation technique. |
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Keywords: | Voltage pulsation Membrane permeability Sickle erythrocyte |
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