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Electrical breakdown in tissue electroporation.

Enric Guenther1, Nina Klein1, Paul Mikus2

  • 1Inter Science, Reusblickstr 23, 6038 Gisikon, Luzern, Switzerland; Institut fuer Bildgebende Diagnostik, Strahlenbergerstrasse 110, 63067 Offenbach, Germany.

Biochemical and Biophysical Research Communications
|October 21, 2015
PubMed
Summary
This summary is machine-generated.

Electrical breakdown during medical electroporation, caused by ionized gases near electrodes, leads to device failure. This biophysical phenomenon, previously overlooked, is crucial for understanding clinical outcomes.

Keywords:
ElectrolysisElectrolytic electroporationIrreversible electroporationMagnetic resonance imagingNanoKnifeTissue ablation

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Area of Science:

  • Biophysics
  • Medical Technology
  • Cell Biology

Background:

  • Electroporation is a key medical technology for gene transfection and tissue ablation.
  • Clinical electroporation is anecdotally linked to loud sounds, high currents, and device failure.
  • The underlying cause of these adverse events remains poorly understood.

Purpose of the Study:

  • To elucidate and quantify the biophysical and biochemical basis of electrical breakdown during electroporation.
  • To investigate the phenomenon causing device malfunction in clinical electroporation applications.

Main Methods:

  • Utilized a comprehensive experimental design incorporating clinical data.
  • Employed a tissue phantom for controlled experimentation.
  • Conducted sound, optical, ultrasound, and MRI measurements.

Main Results:

  • Identified electrical breakdown across ionized electrolysis-produced gases near electrodes as the cause of the phenomenon.
  • Determined that breakdown predominantly occurs near the cathode.
  • Quantified the biophysical and biochemical factors contributing to electrical breakdown.

Conclusions:

  • Electrical breakdown is a significant biophysical phenomenon in electroporation with critical implications for clinical applications.
  • This phenomenon, previously ignored, is essential for understanding and improving electroporation device performance and safety.
  • Understanding electrical breakdown can optimize electroporation protocols and device design.