About a mechanism of the influence of shear stress for viscosity of the blood in vessels of small diameter

Authors

  • Лев Николаевич Катюхин Sechenov Institute of Evolutionary Physiology and Biochemistry 194223 Russia, Saint-Petersburg, pr. Torez 44, Russian Federation

DOI:

https://doi.org/10.15587/2313-8416.2014.35085

Keywords:

sigma-effect, viscosity, erythrocytes, deformability, water pores, shear stress

Abstract

It is proposed a physiological and experimentally confirmed explanation of Fåhraeus-Lindqvist-effect in capillaries using the profile analyses of osmotic deformability of red blood cells. It was shown the dose-dependent change of the erythrocytes deformability in the stage of isotropic spheres after forming artificial water pores (nystatin) and occlusion (PbCl2) of available pores. The Sigma-effect reducing of hematocrit and viscosity in a shear flow of blood through the vessels of a small diameter was conditioned by the interchange of liquid phase between the erythrocyte and the plasma.

Author Biography

Лев Николаевич Катюхин, Sechenov Institute of Evolutionary Physiology and Biochemistry 194223 Russia, Saint-Petersburg, pr. Torez 44

Doctor of Biological Sciences

Laboratory of Comparative Biochemistry enzymes

Leading researcher

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Published

2014-12-22

Issue

Section

Medical