Document Detail

Circulating cytochrome c as potential biomarker of impaired reperfusion in ST-segment elevation acute myocardial infarction.
MedLine Citation:
PMID:  21059434     Owner:  NLM     Status:  MEDLINE    
In patients with ST-segment elevation acute myocardial infarction (STEMI) treated with primary percutaneous coronary intervention (pPCI), abrupt reperfusion can induce myocardial injury and apoptotic cell death. Reperfusion-induced myocardial damage, however, cannot be easily evaluated in clinical practice because of the lack of specific biomarkers. Cytochrome c, a mitochondrial protein, is released on reperfusion into the cytosol, where it triggers the apoptotic process. It can reach the external fluid and circulating blood when cell rupture occurs. We measured the cytochrome c circulating levels in patients with STEMI undergoing pPCI, and correlated them with the clinical signs of myocardial necrosis and reperfusion. The plasma creatine kinase-MB mass and serum cytochrome c (enzyme-linked immunosorbent assay method) were serially measured in 55 patients with STEMI undergoing pPCI. The angiographic and electrocardiographic signs of myocardial reperfusion were also assessed. Cytochrome c transiently increased in all patients with STEMI, with a curve that paralleled that of creatine kinase-MB. A significant relation was found between the peak values of the 2 biomarkers (R = 0.35, p = 0.01) and between the areas under the 2 curves (R = 0.33, p = 0.02). The creatine kinase-MB peak value correlated significantly with the clinical features of infarct extension. In contrast, the cytochrome c peak value correlated inversely with the myocardial blush grade. Patients with clinical signs of myocardial reperfusion injury had a significantly greater cytochrome c peak value than patients without reperfusion injury (median 1.65 ng/ml, interquartile range 1.20 to 2.20, vs 1.1 ng/ml, interquartile range 0.65 to 1.55; p = 0.04). In conclusion, serum cytochrome c is detectable in the early phase of STEMI treated with pPCI and is associated with clinical signs of impaired myocardial reperfusion.
Giancarlo Marenzi; Marco Giorgio; Mirella Trinei; Marco Moltrasio; Paolo Ravagnani; Daniela Cardinale; Fabio Ciceri; Annalisa Cavallero; Fabrizio Veglia; Cesare Fiorentini; Carlo M Cipolla; Antonio L Bartorelli; Piergiuseppe Pelicci
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Publication Detail:
Type:  Journal Article     Date:  2010-09-23
Journal Detail:
Title:  The American journal of cardiology     Volume:  106     ISSN:  1879-1913     ISO Abbreviation:  Am. J. Cardiol.     Publication Date:  2010 Nov 
Date Detail:
Created Date:  2010-11-09     Completed Date:  2010-12-02     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0207277     Medline TA:  Am J Cardiol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1443-9     Citation Subset:  AIM; IM    
Copyright Information:
Copyright © 2010 Elsevier Inc. All rights reserved.
Centro Cardiologico Monzino, IRCCS, Department of Cardiovascular Sciences, University of Milan, Milan, Italy.
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MeSH Terms
Angioplasty, Balloon, Coronary*
Biological Markers / blood
Cytochromes c / blood*
Middle Aged
Myocardial Infarction / blood*,  physiopathology,  therapy*
Myocardial Reperfusion Injury / blood*
Prospective Studies
Reg. No./Substance:
0/Biological Markers; 9007-43-6/Cytochromes c

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