title: Chronopotentiometric studies of phosphatidylcholine bilayers modified by ergosterol.
abstract: We have monitored the effect of ergosterol on electrical capacitance and electrical resistance of the phosphatidylcholine bilayer membranes using chronopotentiometry method. The chronopotentiometric characteristic of the bilayers depends on constant-current flow through the membranes. For low current values, no electroporation takes place and the membrane voltage rises exponentially to a constant value described by the Ohm's law. Based on these kinds of chronopotentiometric curves, a method of the membrane capacitance and the membrane resistance calculations is presented.
authors.affiliation: Institute of Chemistry, University of Bialystok, Al. J. Pilsudskiego 11/4, 15-443 Bialystok, Poland. monikan@uwb.edu.pl
authors.forename: Monika
authors.initials: M
authors.lastname: Naumowicz
authors.forename: Aneta Dorota
authors.initials: AD
authors.lastname: Petelska
authors.forename: Zbigniew Artur
authors.initials: ZA
authors.lastname: Figaszewski
mesh_terms: D004875:Ergosterol / Q000737:chemistry*; D008051:Lipid Bilayers / Q000737:chemistry*; D008962:Models, Theoretical; D010713:Phosphatidylcholines / Q000737:chemistry*; D011199:Potentiometry / Q000379:methods*
chemical_list: D008051:Lipid Bilayers; D010713:Phosphatidylcholines; D004875:Ergosterol