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dielectric properties of nucleated erythrocytes as simulated by the double spherical-shell model

Chinese Physics B 2020年第12期29卷 564-572页

作者： Jia Xu Weizhen Xie Yiyong Chen Lihong Wang Qing Ma School of Medicine Ningbo UniversityNingbo 315211China School of Mathematics and Statistics Ningbo UniversityNingbo 315211China

The dielectric properties of nucleated erythrocytes from bullfrogs were measured in a frequency range of 10 kHz–110 *** complex permittivity(ε*),complex conductivity(κ*),and complex resistivity(ρ*)were analyzed and compared in the 10.63%to 37.58%haematocrit(Hct)*** relaxation behavior,the passive electrical properties,and the cellular structure parameters,including the cell membrane,the cytoplasm,the nuclear membrane,and the nucleoplasm of the nucleated erythrocyte suspensions were *** method used is based on the binomial Cole–Cole equation and the double spherical-shell physical *** the elimination of the electrode polarization effect,two definite relaxations related to the interfacial polarization are observed on low-and high-frequency *** permittivity values and the characteristic frequency values differ by one order of magnitude:the low-frequency relaxation increments[?ε1=(5.63±1.43)×103]and the characteristic frequency[fc1=(297.06±14.48)kHz]derived from the cell membrane,the high-frequency relaxation increments[?ε2=(5.21±1.20)×102]and the characteristic frequency[fc2=(3.73±0.06)MHz]derived from the dielectric response to the external electric field of the nuclear membrane,***,the other core dielectric parameters,such as the relative permittivity of the cell membrane[εm=(7.57±0.38)]and the nuclear envelope[εne=(23.59±4.39)],the conductivity of the cytoplasm(hemoglobin,κHb=(0.50±0.13)S/m]and the nuclear endoplasm[κnp=(2.56±0.75)S/m],and the capacitance of the bilayer membranes[Cm:(0.84±0.04)μF/cm2],and Cne:(0.52±0.10)μF/cm2]were also accurately and reliably *** work presents a feasible method to evaluate the dielectric parameters and the cellular structure of the erythrocytes of ***,it paves the way for new studies on the haematology of frogs and the detection of nucleated cells via dielectric impedance spectroscopy.

关键词： dielectric impedance spectroscopy bullfrog erythrocytes the double spherical-shell model passive electrical property

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