Comparative effects of atorvastatin 80 mg and rosuvastatin 40 mg on the levels of serum endocan, chemerin, and galectin-3 in patients with acute myocardial infarction Introduction Myocardial infarction remains the leading cause of morbidity and mortality worldwide. In 2015, more than 8.75 million people lost their lives due to coronary artery disease (CAD), accounting for 15.5% of all deaths (1). Endothelial dysfunction, inflammation, and disruption-rupture of atherosclerotic plaques play a critical role in the pathogenesis of atherosclerosis and acute myocardial infarction (AMI) (2-5). Endothelial specific molecule-1 (ESM-1) or endocan, is a soluble dermatan sulfate proteoglycan, secreted and expressed by human vascular endothelial cells (6). The elevated levels of the endocan in patients with tumor progression or in patients with sepsis suggest that endocan may be a probable biomarker for endothelial dysfunction or endothelial activation (7, 8). A previous study showed that endocan levels have been significantly increased in patients with acute coronary syndrome (ACS) (9). In another study, admission endocan levels were found to be associated with in-hospital mortality and the CAD severity index in patients with ST segment elevation myocardial infarction (STEMI) (10). Adipose tissue is an active endocrine organ and regulates energy homeostasis and metabolism by communicating with Objective: Endocan, chemerin, and galectin-3 are discrete biomarkers associated with cardiovascular diseases and acting through different pathophysiological pathways. The aim of this study is to investigate and compare the effects of high doses of atorvastatin and rosuvastatin on serum endocan, chemerin, and galectin-3 levels in patients with acute myocardial infarction (AMI). Methods: Sixty-three patients with AMI were randomized to receive atorvastatin (80 mg/day) or rosuvastatin (40 mg/day) after percutaneous revascularization. Serum levels of endocan, chemerin, and galectin-3 were evaluated at baseline and after 4-week therapy. Results: Endocan levels were not decreased statistically significantly with atorvastatin 80 mg, but rosuvastatin 40 mg markedly decreased the levels of endocan according to baseline [from 110.27 (86.03-143.69) pg/mL to 99.22 (78.30-122.87) pg/mL with atorvastatin 80 mg and from 110.73 (77.28-165.22) pg/mL to 93.40 (70.48-115.13) pg/mL with rosuvastatin 40 mg, p=0.242 for atorvastatin 80 mg and p=0.014 for rosuvastatin 40 mg]. Chemerin levels significantly decreased in both groups according to baseline [from 264.90 (196.00-525.95) ng/mL to 135.00 (105.95-225.65) ng/ mL with atorvastatin 80 mg and from 309.95 (168.87-701.27) ng/mL to 121.25 (86.60-212.65) ng/mL with rosuvastatin 40 mg, p<0.001, respectively, for both groups]. Galectin-3 levels did not change markedly with atorvastatin 80 mg, but they decreased with rosuvastatin 40 mg [from 17.00 (13.10-22.25) ng/mL to 19.30 (15.25-23.45) ng/mL with atorvastatin 80 mg, p=0.721, and from 18.25 (12.82-23.82) ng/mL to 16.60 (10.60-20.15) ng/ mL with rosuvastatin 4...