title: [Interaction of nonelectrolytes, the derivatives of 5-hydroxybenzimidazole, with erythrocyte membrane].
abstract: The method of spin probe and scanning electron microscopy were used to study the effects of some new synthetic antioxidants and bioregulators, the derivatives of 5-hydroxybenzimidazole, on the membrane structure and morphology of erythrocytes. Analysis of EPR spectra and electron micrographs revealed that the derivatives with various side substituents affect the membrane structure and shape of erythrocytes in a concentration-dependent manner, the effect correlating with the hydrophobic properties of the side derivatives. It was shown that all the compounds in the concentration range 1.10(-7) - 1.10(-3) M exhibit the echinocytogenic action, the most profound effect being found in the compound with benzyl- and ethoxygroup in sites 2 and 5, respectively. Our data suggest that nonelectrolytes, the derivatives of 5-hydroxybenzimidazole, are located in the outer monolayer of erythrocyte membrane.
authors.forename: O G
authors.initials: OG
authors.lastname: Luneva
authors.forename: L Ia
authors.initials: LIa
authors.lastname: Gendel
authors.forename: Iu V
authors.initials: IuV
authors.lastname: Kuznetsov
authors.forename: L D
authors.initials: LD
authors.lastname: Smirnov
mesh_terms: D000818:Animals; D000975:Antioxidants / Q000494:pharmacology*; D001562:Benzimidazoles / Q000494:pharmacology*; D048430:Cell Shape / Q000187:drug effects; D004578:Electron Spin Resonance Spectroscopy; D004910:Erythrocyte Membrane / Q000187:drug effects / Q000648:ultrastructure; D004912:Erythrocytes / Q000187:drug effects / Q000648:ultrastructure*; D066298:In Vitro Techniques; D008297:Male; D008855:Microscopy, Electron, Scanning; D051381:Rats; D013113:Spin Labels
chemical_list: D000975:Antioxidants; D001562:Benzimidazoles; D013113:Spin Labels; C036435:5-hydroxybenzimidazole