Document Detail


Is peripheral blood a reliable indicator of acute oxidative stress following heart ischemia and reperfusion?
MedLine Citation:
PMID:  11687725     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
BACKGROUND: Reactive oxygen species (ROS) play a crucial role in membrane damage in ischemic-reperfusion syndromes. The aim of our work was to determine whether blood samples taken from a peripheral vein are a reliable indicator to reflect the development of oxidative stress following acute heart ischemia and reperfusion. MATERIAL AND METHODS: In a dog model, the left descending coronary artery (LAD) was occluded for 60 min followed by 60 minutes of reperfusion. The lipid peroxidation marker malondialdehyde (MDA), endogenous antioxidants reduced glutathione (GSH), the activity of superoxide dismutase (SOD) enzyme and the stimulated radical production of isolated neutrophil granulocytes (PMN) were measured simultaneously from the peripheral vein and the coronary sinus before and at the end of the LAD occlusion, and again during reperfusion. RESULTS: MDA and SOD values increased during reperfusion. At the end of 1 hour the reperfusion changes in the coronary sinus were significant (p<0.05). GSH increased in the femoral vein, but decreased in the coronary sinus. The radical-producing capacity of PMNs decreased by the end of LAD occlusion, and a further significant decrease was measured during reperfusion in the coronary sinus (p<0.01). In the peripheral venous blood samples the decrease of PMN radical production became significant only at 30 minutes of reperfusion (p<0.02), and the earlier difference between the coronary sinus and the femoral vein tended to level out following 60 minutes of reperfusion. CONCLUSIONS: During early reperfusion following myocardial ischemia coronary sinus blood sampling gives an earlier indication of myocardial damage. At a later phase, peripheral blood samples may also be informative regarding the altered balance between ROS production and the antioxidant capacity.
Authors:
J Lantos; G Temes; L Göbölös; M T Jaberansari; E Roth
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Medical science monitor : international medical journal of experimental and clinical research     Volume:  7     ISSN:  1234-1010     ISO Abbreviation:  Med. Sci. Monit.     Publication Date:    2001 Nov-Dec
Date Detail:
Created Date:  2001-11-05     Completed Date:  2002-02-14     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  9609063     Medline TA:  Med Sci Monit     Country:  Poland    
Other Details:
Languages:  eng     Pagination:  1166-70     Citation Subset:  IM    
Affiliation:
Department of Experimental Surgery, University of Pécs, Faculty of Medicine, Hungary. janos@expsurg.pote.hu
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MeSH Terms
Descriptor/Qualifier:
Animals
Dogs
Female
Glutathione / metabolism
Male
Malondialdehyde / metabolism
Myocardial Ischemia / blood*
Neutrophils / metabolism*
Oxidative Stress*
Reactive Oxygen Species
Reperfusion Injury / blood*
Superoxide Dismutase / metabolism
Chemical
Reg. No./Substance:
0/Reactive Oxygen Species; 542-78-9/Malondialdehyde; 70-18-8/Glutathione; EC 1.15.1.1/Superoxide Dismutase

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