HEMOSTASIS DISORDERS IN CORONARY ARTERY DISEASE: A PROSPECTIVE COMPARATIVE STUDY OF 130 PATIENTS.

The laboratory detection of factors that participate in coagulation mechanisms in patients with coronary heart disease may lead to important findings regarding the contribution of endothelial function to atherosclerotic lesions of coronary arteries. The main purpose of this study was to investigate the role of high-sensitivity C-reactive protein (hs-CRP), von Willebrand factor (vWF) activity, thrombomodulin (TM), ADAMTS13 activity and myeloperoxidase (MPO) in patients undergoing coronary angiography due to non-ST-elevation myocardial infarction (NSTEMI), unstable angina (UA) and stable angina pectoris with positive stress testing-induced myocardial ischemia (controls). Furthermore, the measured biomarkers were examined among patients with classical cardiovascular risk factors. 50 NSTEMI patients, 50 UA patients and 30 controls referred to coronary angiography were included in the study. The blood samples were collected before the catheter procedure. MPO, TM and ADAMTS13 activity were measured by enzyme-linked immunosorbent assay (ELISA), while vWF activity was calculated with INNOVANCE vWF Ac. When the laboratory results were compared between the three study groups, hs-CRP was found to be higher in NSTEMI patients compared to UA patients (p=0.0015) and controls (p<0.0001). ADAMTS13 activity was higher in NSTEMI (p=0.0035) and UA patients (p=0.0102) compared to controls and TM was lower in NSTEMI patients compared to UA patients (p=0.0307) and controls (p=0.0002). Moreover, MPO was higher in UA patients compared to the control group (p=0.0227). Finally, each of the aforementioned biomarkers was compared in the presence of the following cardiovascular risk factors: smoking, diabetes mellitus, arterial hypertension, dyslipidemia, chronic kidney disease (CKD) and peripheral artery disease (PAD). The results of this study add more data to the current medical literature concerning the role of coagulation disorders, endothelial damage and immunothrombosis in patients with coronary artery disease and their correlation with traditional risk factors for cardiovascular disease.