Abstract
The influence of the oligoamine RE 1492 on the deformability of Red Blood Cells (RBCs) was measured with the micropipette aspiration technique and the capillary rigidometer. The maximal cell flow resistance (MCFR) and the apparent elastic membrane shear modulus mu were increased by 45% at RE 1492 concentrations > 10 mumol/L. There was a decrease of the surface/volume ratio of 6% at RE 1492 concentrations of 25 mumol/L. The qualitative analysis of the polypeptide pattern of membranes and extracted membranes of human RBCs suggests that the reduction of deformability is due to an increased affinity of skeletal proteins to the cytosolic part of the membrane. RE 1492 caused a decrease of osmotic hemolysis by 80% at concentrations of 8 mumol/L.
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