PMID- 27634482 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20180521 LR - 20240104 IS - 2045-2322 (Electronic) IS - 2045-2322 (Linking) VI - 6 DP - 2016 Sep 16 TI - Pulsed Electromagnetic Field Assisted in vitro Electroporation: A Pilot Study. PG - 33537 LID - 10.1038/srep33537 [doi] LID - 33537 AB - Electroporation is a phenomenon occurring due to exposure of cells to Pulsed Electric Fields (PEF) which leads to increase of membrane permeability. Electroporation is used in medicine, biotechnology, and food processing. Recently, as an alternative to electroporation by PEF, Pulsed ElectroMagnetic Fields (PEMF) application causing similar biological effects was suggested. Since induced electric field in PEMF however is 2-3 magnitudes lower than in PEF electroporation, the membrane permeabilization mechanism remains hypothetical. We have designed pilot experiments where Saccharomyces cerevisiae and Candida lusitaniae cells were subjected to single 100-250 mus electrical pulse of 800 V with and without concomitant delivery of magnetic pulse (3, 6 and 9 T). As expected, after the PEF pulses only the number of Propidium Iodide (PI) fluorescent cells has increased, indicative of membrane permeabilization. We further show that single sub-millisecond magnetic field pulse did not cause detectable poration of yeast. Concomitant exposure of cells to pulsed electric (PEF) and magnetic field (PMF) however resulted in the increased number PI fluorescent cells and reduced viability. Our results show increased membrane permeability by PEF when combined with magnetic field pulse, which can explain electroporation at considerably lower electric field strengths induced by PEMF compared to classical electroporation. FAU - Novickij, Vitalij AU - Novickij V AD - Vilnius Gediminas Technical University, Institute of High Magnetic Fields, Vilnius, 03227, Lithuania. FAU - Grainys, Audrius AU - Grainys A AD - Vilnius Gediminas Technical University, Institute of High Magnetic Fields, Vilnius, 03227, Lithuania. FAU - Lastauskiene, Egle AU - Lastauskiene E AD - Vilnius University, Department of Biotechnology and Microbiology, Vilnius, 03101, Lithuania. FAU - Kananaviciute, Ruta AU - Kananaviciute R AD - Vilnius University, Department of Biotechnology and Microbiology, Vilnius, 03101, Lithuania. FAU - Pamedytyte, Dovile AU - Pamedytyte D AD - Vilnius University, Department of Biotechnology and Microbiology, Vilnius, 03101, Lithuania. FAU - Kalediene, Lilija AU - Kalediene L AD - Vilnius University, Department of Biotechnology and Microbiology, Vilnius, 03101, Lithuania. FAU - Novickij, Jurij AU - Novickij J AD - Vilnius Gediminas Technical University, Institute of High Magnetic Fields, Vilnius, 03227, Lithuania. FAU - Miklavcic, Damijan AU - Miklavcic D AD - University of Ljubljana, Faculty of Electrical Engineering, Ljubljana, SI-1000, Slovenia. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20160916 PL - England TA - Sci Rep JT - Scientific reports JID - 101563288 PMC - PMC5025861 EDAT- 2016/09/17 06:00 MHDA- 2016/09/17 06:01 PMCR- 2016/09/16 CRDT- 2016/09/17 06:00 PHST- 2016/02/15 00:00 [received] PHST- 2016/08/30 00:00 [accepted] PHST- 2016/09/17 06:00 [entrez] PHST- 2016/09/17 06:00 [pubmed] PHST- 2016/09/17 06:01 [medline] PHST- 2016/09/16 00:00 [pmc-release] AID - srep33537 [pii] AID - 10.1038/srep33537 [doi] PST - epublish SO - Sci Rep. 2016 Sep 16;6:33537. doi: 10.1038/srep33537.