Document Detail

Irreversible electroporation attenuates neointimal formation after angioplasty.
MedLine Citation:
PMID:  18713696     Owner:  NLM     Status:  MEDLINE    
METHODS AND RESULTS: The left carotid arteries of eight rats underwent in vivo intimal damage using two Fogarty angioplasty catheters. The procedure was immediately followed by IRE ablation in four rats, while the remaining four were used as the control group. The IRE ablation was performed using a sequence of ten dc pulses of 3800 V/cm, 100 micros each, at a frequency of ten pulses per second, applied across the blood vessel between two parallel electrodes. The electrical conductance of the treated tissue was measured during the electroporation to provide real-time feedback of the process. Left carotid arteries were excised and fixated after a 28-day follow-up period. Neointimal formation was evaluated histologically. The use of IRE was successful in three out of four animals in a way that is consistent with the measurements of blood vessel electrical properties. The integrity of the endothelial layer was recovered in the IRE-treated animals, compared with control. Successful IRE reduced neointima to media ratio (0.57 +/-0.4 versus 1.88 +/-1.0, P = 0.02).
CONCLUSIONS: We report for the first time the in vivo results of attenuation of neointimal formation using IRE. Our study shows that IRE might be able to attenuate neointimal formation after angioplasty damage in a rodent model of restenosis. This approach may open new venues in the treatment of coronary artery restenosis after balloon angioplasty.
Elad Maor; Antoni Ivorra; Jonathan Leor; Boris Rubinsky
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  IEEE transactions on bio-medical engineering     Volume:  55     ISSN:  1558-2531     ISO Abbreviation:  IEEE Trans Biomed Eng     Publication Date:  2008 Sep 
Date Detail:
Created Date:  2008-08-20     Completed Date:  2008-10-17     Revised Date:  2013-05-20    
Medline Journal Info:
Nlm Unique ID:  0012737     Medline TA:  IEEE Trans Biomed Eng     Country:  United States    
Other Details:
Languages:  eng     Pagination:  2268-74     Citation Subset:  IM    
Biophysics Graduate Group, University of California, Berkeley, CA 94720, USA.
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MeSH Terms
Angioplasty, Balloon, Coronary / adverse effects*
Catheter Ablation / methods*
Coronary Restenosis / etiology,  physiopathology*,  prevention & control,  surgery*
Electrochemotherapy / methods*
Rats, Sprague-Dawley
Treatment Outcome
Tunica Intima / physiopathology*,  surgery*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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