SIMULTANEOUS DETERMINATION OF TRACE ELEMENTS IN SERA OF PATIENTS WITH ACUTE MYOCARDIAL INFARCTION BY PIXE -2-

Vascular cell adhesion molecule-1 (VCAM-1) is transiently expressed on vascular endothelial cells in response to cytokines. It plays a major role in the adhesion of leucocytes to the endothelium by interaction with its ligand VLA-4, a member of the β1 integrin family. We measured the serum concentration of the soluble VCAM-1 (sVCAM-1) in 114 patients with acute myocardial infarction (AMI) and 37 normal controls by enzyme-linked immunoassay in comparison with trace element concentration. sVCAM-1 levels were markedly higher (mean± SD=833.2±328.9 ng/ml) in the sera of patients with AMI than in normal controls (mean±SD= 549.5±188.8 ng/ml, p<0.001). Using PIXE we also determined concentration of magnesium, manganese, iron, copper, zinc, selenium, and calcium in sera of 43 patients with AMI. There were no clear correlation between the sVCAM-1 concentration and the magnesium, manganese, copper, selenium. But there were significant correlation between the sVCAM-1 concentration and the zinc, calcium (p<0.05).