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2013

Old Dominion University

Cell membrane permeability

Articles 1 - 2 of 2

Full-Text Articles in Medicine and Health Sciences

Cell Responses Without Receptors And Ligands, Using Nanosecond Pulsed Electric Fields (Nspefs), Stephen J. Beebe Jan 2013

Cell Responses Without Receptors And Ligands, Using Nanosecond Pulsed Electric Fields (Nspefs), Stephen J. Beebe

Bioelectrics Publications

No abstract provided.


Facilitation Of Electroporative Drug Uptake And Cell Killing By Electrosensitization, Olga N. Pakhomova, Betsy W. Gregory, Andrei G. Pakhomov Jan 2013

Facilitation Of Electroporative Drug Uptake And Cell Killing By Electrosensitization, Olga N. Pakhomova, Betsy W. Gregory, Andrei G. Pakhomov

Bioelectrics Publications

Cell permeabilization by electric pulses (EP), or electroporation, is widely used for intracellular delivery of drugs and plasmids, as well as for tumour and tissue ablation. We found that cells pre-treated with 100-mus EP develop delayed hypersensitivity to subsequent EP applications. Sensitizing B16 and CHO cells by splitting a single train of eight 100-mus EP into two trains of four EP each (with 5-min. interval) decreased the LD(50) 1.5-2 times. Sensitization profoundly enhanced the electroporation-assisted uptake of bleomycin, a cell-impermeable cytotoxic agent accepted for killing tumours by electrochemotherapy. EP exposures that were not lethal per se caused cell death in …