[Matrix metalloproteinase-1, -8, -9 and the risk of cardiovascular complications in patients with CHD before and after myocardial revascularization].

There is still a great need for detection of biomarkers for early prediction and diagnosis of cardiovascular complications (CVC) in patients with CHD. Objective: To determine the role of MMP-1, 8, 9 in the risk of CCO in patients with CHD before and after coronary artery bypass grafting (CABG). Methods. The study included 75 patients with coronary heart disease before and after myocardial revascularization by CABG, including 40 men and 35 women aged from 45 to 74 years. Patients were divided into two groups: I group - 25 patients with CVC registered after CABG (acute myocardial infarction, ischemic stroke, pulmonary thromboembolism Branch); II group - 50 patients with coronary heart disease without complications after myocardial revascularization. Blood sampling was performed the day before surgery, on the 1st, 3rd and 10th days after CABG. Determining the level of MMP-1, 8, 9 in the serum was performed by ELISA using reagents specific «RD Diagnostics Inc.», USA. Results are expressed in ng/ml. Data are presented as medians and quartiles of two (Me, Q25, Q75). Within and between-group differences were evaluated using the Mann - Whitney, Spearman correlation coefficient and c2 test within the application program SPSS №16. Statistically significant differences between the indicators considered when you reject the hypothesis and significance level of p<0,05. Results. A statistically increased concentration of MMP-1 and MMP-8 in patients in group I. Undetermined significant dynamics of MMP-9 in patients after myocardial revascularization. Conclusion. The results indicate that the level of MMP-1, 2.5 ng/ml or more in patients with CAD is a diagnostic criterion for the risk of TE complications. No association between high content of MMP-8 and the presence of complications in patients after surgery. There were no significant dynamics of MMP-9 in patients after myocardial revascularization.