Critical analysis of the impedance method for the evaluation of permittivity and conductivity of the plasma membrane.
Membr Cell Biol
; 14(1): 129-35, 2000.
Article
em En
| MEDLINE
| ID: mdl-11051088
ABSTRACT
We report a critical analysis of a typical method of dielectric spectroscopy consisting in impedance measurements as a function of frequency. Experimental data were obtained by measuring impedance on human erythrocyte suspensions. Since these cells do not have a nucleus they represent an ideal material for the application of the well established single shell model. This allows the evaluation of permittivity and conductivity of the plasma membrane. We discuss the influence on the reliability of results of parameters such as fractional volume, average dimensions and membrane thickness of cells.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Permeabilidade da Membrana Celular
/
Membrana Eritrocítica
Limite:
Humans
Idioma:
En
Revista:
Membr Cell Biol
Assunto da revista:
BIOLOGIA MOLECULAR
Ano de publicação:
2000
Tipo de documento:
Article
País de afiliação:
Itália