CCL2 and ST Elevation Myocardial Infarction: In addition, CCL2, also known as monocyte chemoattractant protein-1 (MCP-1), has a higher serum level in ST-segment elevation myocardial infarction (STEMI) patients, but lower plasma levels in MI patients without collateral circulation (Kobusiak-Prokopowicz et al., 2007; Sahinarslan et al., 2010).