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Factors involved in sudden coagulation observed in patients with acute myocardial infarction.
MedLine Citation:
PMID:  23160687     Owner:  NLM     Status:  In-Data-Review    
Coronary artery diseases (CAD) evolving into acute myocardial infarction (AMI) is associated with coagulation and thrombotic occlusion of coronary vessels in the presence of unstable atheroma. The atheromatous plaque becomes unstable when it is infiltrated by monocytes, macrophages and neutrophils capable of secreting proteases that induce plaque erosion, rupture and initialize the coagulation process. The aim of this study was (a) to analyse the plasma of patients with AMI for the presence of proteases that may activate rapid coagulation, (b) to evaluate coagulation markers as prothrombin fragment (F1+2) and antithrombin III and (c) to find an interrelation between proteases and coagulation markers. The examined plasma showed high values of prothrombin fragment (F1+2) and low levels of antithrombin III. These markers showed a highly significant negative-correlation. The plasma also exhibited increased levels of matrix metalloproteinase-9 (MMP-9) which were positively-correlated with the prothrombin fragment (F1+2). MMP-9 seems to cause the coagulation activity by increasing the level of prothrombin fragment (F1+2) and the consumption of antithrombin III. The examined plasma also exhibited high levels of neutrophil gelatinase-associated lipocalin (NGAL), which is known to modulate MMP-9 activity. The high plasma levels of MMP-9 and NGAL can be attributed to plaque instability and appear to activate sudden coagulation. MMP-9 and NGAL, in the presence of altered values of prothrombin fragment (F1+2) and antithrombin III in AMI patients, seem to be suitable markers to be studied in unstable plaque patients, for the prediction and prevention of acute coronary syndrome.
Arnaldo Pinelli; Silvio Trivulzio; Giuseppe Rossoni; Rosaria Redaelli; Sergio Brenna
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  In vivo (Athens, Greece)     Volume:  26     ISSN:  1791-7549     ISO Abbreviation:  In Vivo     Publication Date:  2012 Nov 
Date Detail:
Created Date:  2012-11-19     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8806809     Medline TA:  In Vivo     Country:  Greece    
Other Details:
Languages:  eng     Pagination:  1021-5     Citation Subset:  IM    
Research Unit "Iraklis Galatoulas", Department of Medical Biotechnology and Translational Medicine, University of Milan, Via Vanvitelli 32, 20129 - Milan, Italy.
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