Higher cardol homologues (5-alkenylresorcinols) from rye affect the red cell membrane-water transport

Abstract

The influence o f 5-heptadecenylresorcinol and total rye 5-alkenylresorcinols isolated from ryegrains on the red blood cell water permeability was studied using osmotic shrinkage experiments performed in 300 mM sucrose. The studiedcompounds induced significant increase of erythrocyte water permeability. The threshold concentration needed for the increase of water permeability was in an order o f 10-6 mol/l. The temperature dependence of the observed process showed the discontinuity which was related to the 5-alkenylresorcinol transition temperatures. It was shown also that alkenylresorcinols did not exert the biphasic action on hypotonic lysis of erythrocytes usually observed for water soluble surfactants. The specific lysine activity is postulated for the studied compounds. © 1985, Walter de Gruyter. All rights reserved.