title: Conductometric properties of human erythrocyte membranes: dependence on haematocrit and alkali metal ions of the suspending medium.
abstract: The electrical properties of the cytoplasmatic membrane of human erythrocyte cells have been evaluated by means of dielectric spectroscopy measurements in the radiowave frequency range, using the so-called "suspension method". Measurements have been carried out at different volume fractions of the corpuscular phase (the cell haematocrit) in order to investigate the influence of the cell-cell interactions on the electrical parameters (the membrane permittivity epsilon and the membrane conductivity sigma) of the cell membrane and a set of new values are proposed. Moreover, the influence of different alkali metal ions (Na+, K+, Cs+, Li+) on the ion permeation properties of the membrane are investigated and the structural alterations in the membrane organized briefly discussed.
authors.affiliation: Dipartimento di Medicina Interna, Università di Roma Tor Vergata, Rome, Italy.
authors.forename: F
authors.initials: F
authors.lastname: Bordi
authors.forename: C
authors.initials: C
authors.lastname: Cametti
authors.forename: R
authors.initials: R
authors.lastname: Misasi
authors.forename: R
authors.initials: R
authors.lastname: De Persio
authors.forename: G
authors.initials: G
authors.lastname: Zimatore
mesh_terms: D000328:Adult; D003217:Conductometry; D003470:Culture Media; D004553:Electric Conductivity; D004910:Erythrocyte Membrane / Q000187:drug effects / Q000502:physiology*; D006400:Hematocrit; D006801:Humans; D007477:Ions; D008432:Mathematical Computing; D008672:Metals, Alkali / Q000494:pharmacology*; D008954:Models, Biological
chemical_list: D003470:Culture Media; D007477:Ions; D008672:Metals, Alkali