Despite the fact that, in the present study, no significant differences were found in the MCP-1 concentration in the blood between samples from the cubital vein and the coronary sinus, as well as between groups of patients with coronary heart disease (Table 2), we previously described the excessive MCP-1 concentration in the sinus blood relative to the peripheral blood of CHD patients without cardiomyopathy, which was not determined in patients with ICMP (MCP-1 level was determined by ELISA) [22]. Here, CCL2 is linked to coronary artery disorder.