Document Detail

Biodegradable elastic patch plasty ameliorates left ventricular adverse remodeling after ischemia-reperfusion injury: A preclinical study of a porous polyurethane material in a porcine model.
MedLine Citation:
PMID:  23219497     Owner:  NLM     Status:  Publisher    
OBJECTIVE: Myocardial infarction (MI) can lead to irreversible adverse left ventricular remodeling resulting in subsequent severe dysfunction. The objective of this study was to investigate the potential for biodegradable, elastomeric patch implantation to positively alter the remodeling process after MI in a porcine model. METHODS: Yorkshire pigs underwent a 60-minute catheter balloon occlusion of the left circumflex artery. Two weeks after MI animals underwent epicardial placement of a biodegradable, porous polyurethane (poly(ester urethane)urea; PEUU) patch (MI+PEUU, n = 7) or sham surgery (MI+sham, n = 8). Echocardiography before surgery and at 4 and 8 weeks after surgery measured the end-diastolic area (EDA) and fractional area change (%FAC). All animals were humanely killed 8 weeks after surgery and hearts were histologically assessed. RESULTS: At 8 weeks, echocardiography revealed greater EDA values in the MI+sham group (23.6 ± 6.6 cm(2), mean ± standard deviaation) than in the MI+PEUU group (15.9 ± 2.5 cm(2)) (P < .05) and a lower %FAC in the MI+sham group (24.8 ± 7.6) than in the MI+PEUU group (35.9 ± 7.8) (P < .05). The infarcted ventricular wall was thicker in the MI+PEUU group (1.56 ± 0.5 cm) than in the MI+sham group (0.91 ± 0.24 cm) (P < .01). CONCLUSIONS: Biodegradable elastomeric PEUU patch implantation onto the porcine heart 2 weeks post-MI attenuated left ventricular adverse remodeling and functional deterioration and was accompanied by increased neovascularization. These findings, although limited to a 2-month follow-up, may suggest an attractive clinical option to moderate post-MI cardiac failure.
Ryotaro Hashizume; Kazuro L Fujimoto; Yi Hong; Jianjun Guan; Catalin Toma; Kimimasa Tobita; William R Wagner
Related Documents :
6699527 - A comparative study of body surface isopotential mapping and the electrocardiogram in d...
23440607 - Electromagnetic energy radiated from mobile phone alters electrocardiographic records o...
23820957 - An optimal cardiothoracic ratio cut-off to predict clinical outcomes in patients with a...
8535347 - Comparative value of effort and adenosine-testing in the evaluation of patients with ol...
18473777 - Pharmacological approach of no-reflow phenomenon related with percutaneous coronary int...
17389667 - Dronedarone: an amiodarone analog for the treatment of atrial fibrillation and atrial f...
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-12-6
Journal Detail:
Title:  The Journal of thoracic and cardiovascular surgery     Volume:  -     ISSN:  1097-685X     ISO Abbreviation:  J. Thorac. Cardiovasc. Surg.     Publication Date:  2012 Dec 
Date Detail:
Created Date:  2012-12-10     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0376343     Medline TA:  J Thorac Cardiovasc Surg     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2012 The American Association for Thoracic Surgery. Published by Mosby, Inc. All rights reserved.
McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, Pa.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms

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

Previous Document:  Risk factors for nonocclusive mesenteric ischemia after elective cardiac surgery.
Next Document:  Effects of lack of pulsatility on pulmonary endothelial function in the Fontan circulation.