title: Impact of external medium conductivity on cell membrane electropermeabilization by microsecond and nanosecond electric pulses.
abstract: The impact of external medium conductivity on the efficiency of the reversible permeabilisation caused by pulsed electric fields was investigated. Pulses of 12 ns, 102 ns or 100 μs were investigated. Whenever permeabilisation could be detected after the delivery of one single pulse, media of lower conductivity induced more efficient reversible permeabilisation and thus independently of the medium composition. Effect of medium conductivity can however be hidden by some saturation effects, for example when pulses are cumulated (use of trains of 8 pulses) or when the detection method is not sensitive enough. This explains the contradicting results that can be found in the literature. The new data are complementary to those of one of our previous study in which an opposite effect of the conductivity was highlighted. It stresses that the conductivity of the medium influences the reversible permeabilization by several ways. Moreover, these results clearly indicate that electropermeabilisation does not linearly depend on the energy delivered to the cells.
authors.affiliation: Institute for Pulsed Power and Microwave Technology, Karlsruhe Institute of Technology, Germany.|Laboratory of Vectorology and Anticancer Therapies, UMR 8203, CNRS, Univ.Paris-Sud, Université Paris-Saclay, Gustave Roussy, PR2, Villejuif, 94805, France.
authors.forename: Aude
authors.initials: A
authors.lastname: Silve
authors.affiliation: Laboratory of Vectorology and Anticancer Therapies, UMR 8203, CNRS, Univ.Paris-Sud, Université Paris-Saclay, Gustave Roussy, PR2, Villejuif, 94805, France.
authors.forename: Isabelle
authors.initials: I
authors.lastname: Leray
authors.affiliation: Inria Bordeaux, CNRS UMR 5251 &Université de Bordeaux, France.
authors.forename: Clair
authors.initials: C
authors.lastname: Poignard
authors.affiliation: Laboratory of Vectorology and Anticancer Therapies, UMR 8203, CNRS, Univ.Paris-Sud, Université Paris-Saclay, Gustave Roussy, PR2, Villejuif, 94805, France.
authors.forename: Lluis M
authors.initials: LM
authors.lastname: Mir
mesh_terms: D000818:Animals; D002460:Cell Line; D002462:Cell Membrane / Q000737:chemistry*; D002463:Cell Membrane Permeability; D006224:Cricetinae; D003412:Cricetulus; D003470:Culture Media / Q000737:chemistry*; D004553:Electric Conductivity; D018274:Electroporation
chemical_list: D003470:Culture Media
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