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Dynamic effects of point source electroporation on the rat brain tissue
Shirley Sharabi1, David Last2, David Guez2
1The Advanced Technology Center, Sheba Medical Center, Ramat-Gan 52621, Israel; Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel.
Bioelectrochemistry (Amsterdam, Netherlands)
|July 1, 2014
Summary
Novel electroporation techniques show promise for treating glioblastoma multiforme. This minimally invasive approach uses intracranial electroporation and MRI to assess treatment effects, offering a new avenue for brain tumor therapy.
Area of Science:
- Biomedical Engineering
- Neuroscience
- Oncology
Background:
- Glioblastoma multiforme (GBM) presents a poor prognosis due to invasive tumor growth and limited drug delivery across the blood-brain barrier.
- Current aggressive therapies for GBM have shown limited efficacy.
Purpose of the Study:
- To introduce a novel, minimally invasive treatment for GBM using intracranial electroporation.
- To develop a non-invasive method for assessing treatment response via magnetic resonance imaging (MRI).
Main Methods:
- A unique setup with a single intracranial electrode and an external surface electrode was used for electroporation in rat brains.
- Various electroporation protocols were applied to study physiological effects.
- Magnetic resonance imaging (MRI) was employed to assess blood-brain barrier disruption and permanent brain tissue damage volumes.
Main Results:
- Treatment voltages and the number of pulses significantly correlated with blood-brain barrier disruption and permanent brain tissue damage (r(2)=0.99 and r(2)=0.94, respectively).
- Blood-brain barrier disruption volumes were significantly larger (3.2±0.3 times) than final permanent damage volumes (p<0.0001).
Conclusions:
- Electroporation parameters, specifically voltage and pulse number, are critical determinants of treatment effects.
- Combining multiple electroporation modalities may enhance treatment efficacy for brain tumors.
- This study highlights the potential of electroporation combined with MRI for GBM treatment and assessment.
