[Changes in the membrane permeability of erythrocytes in the presence of heparin].

It has been found by the conductometric impulse method that membrane conductivity of human erythrocytes rises about 70 times at heparin concentration in blood samples above 0.2 mg/ml. The presence of edetic acid (EDTA) in blood samples inhibits the rise of membrane conductivity on addition of heparin.

[Effect of polynucleotide adsorption on characteristics of a planar phosphatidylcholine bilayer membrane].

Interaction of DNA with planar bilayer phosphatidylcholine membrane in the presence of CaCl2 increases electric conductance of the membrane several times as a result of the formation of DNA-membrane complex. The same effect was observed in the cases of ribosomal RNA and synthetic homopolymers polyA, polyU and polyA X polyU double helix.

[Changes in the electrical characteristics of bilayer lipid membranes during adsorption of heparin in the presence of Ca2+].

It was shown that a change in conductance and capacitance of BLM can be explained by Ca++ BLM--heparin complex organization.