Document Detail

Different effects of adenosine and calcium channel blockade on myocardial no-reflow after acute myocardial infarction and reperfusion.
MedLine Citation:
PMID:  16775665     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: Adenosine and calcium channel blockers have been used in the treatment of angiographic no-reflow directly after angioplasty for acute myocardial infarction (AMI). However, their effects on tissue perfusion after AMI and reperfusion are undefined. The present study was designed to compare the effect of adenosine with that of the calcium channel blockers diltiazem and verapamil on myocardial no-reflow. MATERIALS AND METHODS: Coronary ligation area and area of no-reflow were determined with both myocardial contrast echocardiography in vivo and histopathological evaluation in 44 Yorkshire mini-swines randomized into five study groups: ten in control, eight in adenosine-treated, nine in diltiazem-treated, nine in verapamil-treated and eight in sham-operated. An acute myocardial infarction and reperfusion model was created with 3-h occlusion of the left anterior descending coronary artery followed by 1-h reperfusion. RESULTS: Compared with the control group, adenosine significantly decreased the area of no-reflow measured with both methods from 78.5 and 82.3% to 20.7 and 21.5% of ligation area, respectively (both P < 0.01), reduced necrosis area, maintained VE-cadherin, beta-catenin and gamma-catenin levels in reflow myocardium (P < 0.05-0.01). Although diltiazem and verapamil also significantly decreased the area of no-reflow, they failed to significantly modify necrosis area, VE-cadherin, beta-catenin and gamma-catenin levels. CONCLUSIONS: These findings support the concept that adenosine can reduce both structural and functional no-reflow, while calcium channel blockade can only reduce functional no-reflow.
Jing-Lin Zhao; Yue-Jin Yang; Chuan-Jue Cui; Shi-Jie You; Yong-Jian Wu; Run-Lin Gao
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Cardiovascular drugs and therapy / sponsored by the International Society of Cardiovascular Pharmacotherapy     Volume:  20     ISSN:  0920-3206     ISO Abbreviation:  Cardiovasc Drugs Ther     Publication Date:  2006 Jun 
Date Detail:
Created Date:  2006-07-20     Completed Date:  2006-11-27     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8712220     Medline TA:  Cardiovasc Drugs Ther     Country:  United States    
Other Details:
Languages:  eng     Pagination:  167-75     Citation Subset:  IM    
Department of Cardiology, Cardiovascular Institute and Fu-Wai Heart Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Bei Li Shi Road 167, Xi-Cheng District, Beijing 100037, China.
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MeSH Terms
Adenosine / pharmacology*
Antigens, CD / analysis,  genetics
Cadherins / analysis,  genetics
Calcium Channel Blockers / pharmacology*
Coronary Circulation / drug effects*
Myocardial Infarction / drug therapy*,  physiopathology
Myocardial Reperfusion Injury / prevention & control*
Myocardium / metabolism
RNA, Messenger / analysis
Swine, Miniature
beta Catenin / analysis,  genetics
gamma Catenin / analysis,  genetics
Reg. No./Substance:
0/Antigens, CD; 0/Cadherins; 0/Calcium Channel Blockers; 0/RNA, Messenger; 0/beta Catenin; 0/cadherin 5; 0/gamma Catenin; 58-61-7/Adenosine

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