Abstract
Patients with ST-segment elevation (STEMI) have totally occluded vessels, while patients with non-ST-segment elevation (NSTEMI) present partial vessel occlusion, which may generate different levels of Reactive Oxygen Species (ROS). Objectives: The aim of this study was to compare the oxidative profile in AMI patients with ST segment elevation and non-STEMI as well as control subjects. This study was carried with 46 AMI patients divided into STEMI and NSTEMI. The control group consisted of 40 healthy subjects. Oxidative stress profile was evaluated analyzing carbonyl protein (PCO), lipid peroxidation (TBARS), ischemia-modified albumin (IMA), vitamin C (VIT C), superoxide dismutase (SOD) and catalase (CAT). Serum PCO (p < 0.001), plasma TBARS (p < 0.01), serum IMA (p < 0.0001) levels, erythrocytes CAT (p < 0.001), and SOD activities (p < 0.05) were significantly higher in STEMI patients when compared with the control group (p < 0.001). No difference in the IMA levels and oxidative stress parameters was observed between conditions of AMI. Only plasma VIT C in STEMI patients was significantly lower when compared with NSTEMI patients and control group (p < 0.001). Results suggest that the oxidative profile generated by STEMI and NSTEMI is similar regardless of the size of arterial occlusion generated by thrombus.
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