Media type: E-Article Title: Sodium current inhibition by nanosecond pulsed electric field (nsPEF)—fact or artifact? Contributor: Verkerk, Arie O.; van Ginneken, Antoni C.G.; Wilders, Ronald Published: Wiley, 2013 Published in: Bioelectromagnetics, 34 (2013) 2, Seite 162-164 Language: English DOI: 10.1002/bem.21754 ISSN: 0197-8462; 1521-186X Keywords: Radiology, Nuclear Medicine and imaging ; Physiology ; General Medicine ; Biophysics Origination: Footnote: Description: AbstractIn two recent publications in Bioelectromagnetics it has been demonstrated that the voltage‐gated sodium current (INa) is inhibited in response to a nanosecond pulsed electric field (nsPEF). At the same time, there was an increase in a non‐inactivating “leak” current (Ileak), which was attributed to the formation of nanoelectropores or larger pores in the plasma membrane. We demonstrate that the increase in Ileak, in combination with a residual series resistance, leads to an error in the holding potential in the patch clamp experiments and an unanticipated inactivation of the sodium channels. We conclude that the observed inhibition of INa may be largely, if not fully, artifactual. Bioelectromagnetics 34:162–164, 2013. © 2012 Wiley Periodicals, Inc.