Abstract
We have examined the effect of a low-intensity laser radiation (wavelength 630 nm, beam power 1 mW) on the aggregability of blood platelets, acidic tolerance of erythrocytes, and the structure of their membranes. Laser radiation suppressed platelet aggregability induced by ATP, epinephrine, collagen, platelet activating factor, and fibrinogen and enhanced the resistance of the erythrocytes. It decreased the microviscosity of lipid bilayer and of the membrane protein-lipid contact regions and slowed down lipid peroxidation. These findings attest to a direct membranotropic effect of laser radiation, which is particularly strong in the protein-lipid contact regions.
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