Influence of hematoporphyrin on the mechanical properties of the lipid bilayer membranes

T. Hianik; D. Masarikova; L. V. Zhorina; Marina Yu. Poroshina; Elena B. Chernyaeva

doi:10.1117/12.47502

1 April 1991 Influence of hematoporphyrin on the mechanical properties of the lipid bilayer membranes

T. Hianik, D. Masarikova, L. V. Zhorina, Marina Yu. Poroshina, Elena B. Chernyaeva

Proceedings Volume 1402, USSR-CSFR Joint Seminar on Nonlinear Optics in Control, Diagnostics, and Modeling of Biophysical Processes; (1991) https://doi.org/10.1117/12.47502
Event: USSR-CSFR Joint Seminar on Nonlinear Optics in Control, Diagnostics and Modeling, 1990, Koshice-Prague, Czechoslovakia

Abstract

The interactions between hematoporphyrin (HP) and artificial bilayer lipid membranes (BLM) has been studied. No influence of HP on the BLM conductivity has been observed at the HP concentrations from 1O_6 to 3 x iO M. The modulus of elasticity in the direction normal to the membrane plane (E1) and the dynamic viscosity coefficient (7)) have been measured both exhibiting the HP- induced decrease by 22 --31 in darkness. Under illumination by low-intensity HeNe laser () 632nm) the values of parameters E1 and ij of the Hp-modified membranes were found to increase by 41 66. When removing the HP from the solution by perfusion the irreversible changes in mechanical properties of the HP-modified membranes caused by the laser light were observed. This could be due to formation of the stable complexes of HP with lipid molecules.

Citation Download Citation

T. Hianik, D. Masarikova, L. V. Zhorina, Marina Yu. Poroshina, and Elena B. Chernyaeva "Influence of hematoporphyrin on the mechanical properties of the lipid bilayer membranes", Proc. SPIE 1402, USSR-CSFR Joint Seminar on Nonlinear Optics in Control, Diagnostics, and Modeling of Biophysical Processes, (1 April 1991); https://doi.org/10.1117/12.47502

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