TY - GEN
T1 - Cell membrane charging in intense nanosecond pulsed electric fields
AU - Kolb, J. F.
AU - Frey, I. W.
AU - White, J. A.
AU - Beebe, S. J.
AU - Joshi, R. P.
AU - Schoenbach, K. H.
N1 - Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2006
Y1 - 2006
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=48349141873&partnerID=8YFLogxK
U2 - 10.1109/MODSYM.2006.365314
DO - 10.1109/MODSYM.2006.365314
M3 - Conference contribution
AN - SCOPUS:48349141873
SN - 142440018X
SN - 9781424400188
T3 - Conference Record of the International Power Modulator Symposium and High Voltage Workshop
SP - 566
EP - 569
BT - 2006 IEEE International Power Modulator Conference, IPMC(27th Power Modulator Symposium and 2006 High Voltage Workshop)
Y2 - 14 May 2006 through 18 May 2006
ER -