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Med Arch. 2010; 64(2): 103-106

Biomarkers of Plaque Instability in Acute Coronary Syndrome Patients

Jasmina Nurkic, Farid Ljuca, Midhat Nurkic, Elmir Jahic, Mahira Jahic.

The aim of the study was to determine serum levels of matrix metalloproteinase 9 (MMP-9) and high sensitivity C reactive protein (hsCRP) in patients with diagnosis of acute coronary syndrome (ACS). The study included 150 patients divided in three groups: patients with significant coronary artery disease (CAD), patients without significant coronary artery disease and patients with acute myocardial infarction (MI). Method used for determination of coronary artery disease significance is coronary angiography, and CAD is determined as significant if level of stenosis is >50%. The group without significant CAD had lower MMP-9 serum concentrations than group with significant CAD, which has lower MMP-9 than group with acute MI. Difference in levels of MMP-9 serum concentration between groups with and without CAD is statistically significant. Level of serum hsCRP in group with MI is significantly higher than in other two groups. There is no significant difference in hsCRP serum level between group of patients with significant CAD and without significant CAD. Our results demonstrate the significance of MMP-9 and hsCRP level determination in assessment of acute coronary syndrome patients in the future as a biomarker of plaque instability.

Key words: matrix metalloproteinase 9, high sensitivity C reactive protein, acute coronary syndrome, plaque instability

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