[1] Qin Yurong, Jiang Yuehua, Lai Shengli,. Analytical model for power dissipation in cell membranesin suspensions exposed to electric fields [J]. Journal of Southeast University (English Edition), 2005, 21 (2): 145-148. [doi:10.3969/j.issn.1003-7985.2005.02.006]

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Analytical model for power dissipation in cell membranesin suspensions exposed to electric fields()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

21

Issue:

2005 2

Page:

145-148

Research Field:

Biological Science and Medical Engineering

Publishing date:

2005-06-30

Info

Title:

Analytical model for power dissipation in cell membranesin suspensions exposed to electric fields

Author(s):

Qin Yurong¹;  Jiang Yuehua²;  Lai Shengli¹

¹College of Electronic and Information Engineering, South China University of Technology, Guangzhou 510640, China
² Department of Medical Research, General Hospital of Guangzhou Military Command, Guangzhou 510010, China

Keywords:

power dissipation;  analytical model;  cell suspension;  external electric fields

PACS:

R815

DOI:

10.3969/j.issn.1003-7985.2005.02.006

Abstract:

Due to interaction among cells, it is too complex to build an exact analytical model for the power dissipation within the cell membrane in suspensions exposed to external fields.An approximate equivalence method is proposed to resolve this problem.Based on the effective medium theory, the transmembrane voltage on cells in suspensions was investigated by the equivalence principle.Then the electric field in the cell membrane was determined.Finally, analytical solutions for the power dissipation within the cell membrane in suspensions exposed to external fields were derived according to the Joule principle.The equations show that the conductive power dissipation is predominant within the cell membrane in suspensions exposed to direct current or lower frequencies, and dielectric power dissipation prevails at high frequencies exceeding the relaxation frequency of the exposed membrane.

References:

[1] Kotnik T, Miklavcic D.Theoretical evalution of the distributed power dissipation in biological cells exposed to electric fields [J].Bioelectromagnetics, 2000, 21(5):385-394.
[2] Pavlin M, Slivnik T, Miklavcic D.Effective conductivity of cell suspensions [J].IEEE Transactions on Biomedical Engineering, 2002, 49(1):77-80.
[3] Qin Y R, Lai S L.Analytical model for transmembrane voltage induced on a cell membrane in suspensions [J].Journal of Southeast University(Natural Science Edition), 2004, 34(5):661-664.
[4] Raicu V, Saibara T, Enzan H, et al.Dielectric properties of rat liver in vivo:analysis by modeling hepatocytes in the tissue architecture [J].Bioelectrochemistry and Bioenergetics, 1998, 47(2):333-342.
[5] Grosse C, Schwan H P.Cellular membrane potentials induced by alternating fields [J].Biophys J, 1992, 63(6):1632-1642.

Memo

Memo:

Biographies: Qin Yurong(1965—), female, graduate;Lai Shengli(corresponding author), male, professor, soka@263.net.

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