Cell membrane charging in intense nanosecond pulsed electric fields

J. F. Kolb, I. W. Frey, J. A. White, S. J. Beebe, R. P. Joshi, K. H. Schoenbach

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

In order to study membrane charging in mammalian cells during exposure to pulsed electric fields of 60 ns duration we measured transmembrane voltage changes during and after exposure in real-time, i.e. with a resolution that is short compared to the duration of the administered electrical pulse. The applied electric field was varied between 5 kV/cm and 90 kV/cm. Under all conditions the voltage at the hyperpolarized pole of the cell is changing by more than 1 V during the first 5 ns of the exposure. A further hyperpolarization of the membrane of up to 1.6 V depends on the strength of the applied field. A change of at least 1.4 V at the anode will cause pores to open and allow ion exchange. Immediately after this maximum is reached, potential differences start to readjust. In principle, voltages at the depolarized pole follow the same pattern. However, the change is, in general lower by 1 V, limiting the depolarization to a maximum of 0.6 V.

Original languageEnglish
Title of host publication2006 IEEE International Power Modulator Conference, IPMC(27th Power Modulator Symposium and 2006 High Voltage Workshop)
Pages566-569
Number of pages4
DOIs
StatePublished - 2006
Event2006 IEEE International Power Modulator Conference, IPMC(27th Power Modulator Symposium and 2006 High Voltage Workshop) - Washington, DC, United States
Duration: May 14 2006May 18 2006

Publication series

NameConference Record of the International Power Modulator Symposium and High Voltage Workshop
ISSN (Print)1076-8467

Conference

Conference2006 IEEE International Power Modulator Conference, IPMC(27th Power Modulator Symposium and 2006 High Voltage Workshop)
CountryUnited States
CityWashington, DC
Period05/14/0605/18/06

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