Document Detail


Cardiac shock wave therapy ameliorates left ventricular remodeling after myocardial ischemia-reperfusion injury in pigs in vivo.
MedLine Citation:
PMID:  20617568     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
OBJECTIVES: Left ventricular (LV) remodeling after acute myocardial infarction (AMI) is associated with a poor prognosis and an impaired quality of life. We have shown earlier that low-energy extracorporeal cardiac shock wave (SW) therapy improves chronic myocardial ischemia in pigs and humans and also ameliorates LV remodeling in a pig model of AMI induced by permanent coronary ligation. However, in the current clinical setting, most of the patients with AMI receive reperfusion therapy. Thus, in this study we examined whether our SW therapy also ameliorates LV remodeling after myocardial ischemia-reperfusion (I/R) injury in pigs in vivo. METHODS: Pigs were subjected to a 90-min ischemia and reperfusion using a balloon catheter and were randomly assigned to two groups with or without SW therapy to the ischemic border zone (0.09 mJ/mm(2), 200 pulses/spot, 9 spots/animal, three times in the first week) (n = 15 each). RESULTS: Four weeks after I/R, compared with the control group, the SW group showed significantly ameliorated LV remodeling in terms of LV enlargement (131 +/- 9 vs. 100 +/- 7 ml), reduced LV ejection fraction (28 +/- 2 vs. 36 +/- 3%), and elevated left ventricular end-diastolic pressure (11 +/- 2 vs. 4 +/- 1 mmHg) (all P <0.05, n = 8 each). The SW group also showed significantly increased regional myocardial blood flow (-0.06 +/- 0.11 vs. 0.36 +/- 0.13 ml/min/g, P < 0.05), capillary density (1.233 +/- 31 vs. 1.560 +/- 60/mm(2), P < 0.001), and endothelial nitric oxide synthase activity (0.24 +/- 0.03 vs. 0.41 +/- 0.05, P < 0.05) in the ischemic border zone compared with the control group (n = 7 each). CONCLUSION: These results indicate that our SW therapy is also effective in ameliorating LV remodeling after myocardial I/R injury in pigs in vivo.
Authors:
Yoshitaka Ito; Kenta Ito; Takashi Shiroto; Ryuji Tsuburaya; Gao Jun Yi; Morihiko Takeda; Yoshihiro Fukumoto; Satoshi Yasuda; Hiroaki Shimokawa
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Coronary artery disease     Volume:  21     ISSN:  1473-5830     ISO Abbreviation:  Coron. Artery Dis.     Publication Date:  2010 Aug 
Date Detail:
Created Date:  2010-07-08     Completed Date:  2010-10-15     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9011445     Medline TA:  Coron Artery Dis     Country:  England    
Other Details:
Languages:  eng     Pagination:  304-11     Citation Subset:  IM    
Affiliation:
Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine, Aoba-ku, Sendai, Japan.
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MeSH Terms
Descriptor/Qualifier:
Animals
Blotting, Western
Capillaries / physiopathology
Coronary Angiography
Coronary Circulation
Disease Models, Animal
Echocardiography
Heart Catheterization
High-Energy Shock Waves / therapeutic use*
Male
Myocardial Reperfusion Injury / pathology,  physiopathology,  therapy*
Myocardium / enzymology,  pathology*
Neovascularization, Physiologic
Nitric Oxide Synthase Type III / metabolism
Stroke Volume
Sus scrofa
Time Factors
Ventricular Function, Left*
Ventricular Pressure
Ventricular Remodeling*
Chemical
Reg. No./Substance:
EC 1.14.13.39/Nitric Oxide Synthase Type III

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


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