Abstract
Previous reports have suggested the role of oxidative stress in progression of COVID-19 infection, but there is limited information regarding the effect of antioxidant capacity and total oxidant status of patients with COVID-19 on disease severity. In the present study, we aimed to investigate the relationship between total antioxidant capacity (TAC), total oxidant status (TOS), TAC/TOS levels, and disease severity in hospitalized patients with COVID-19. This cohort study was carried out at Masih Daneshvari Hospital in Tehran, Iran, from September 2020 to October 2020. Clinical data of 331 patients with COVID-19 admitted to the hospital were analyzed and divided into mild, moderate, and severe groups (needed oxygen, intubation, and mechanical ventilation). The patients' TAC, TOS, and TAC/TOS levels were assessed using the serum samples by colorimetric assay kit. We found no significant difference in serum levels of TAC, TOS, and TAC/TOS in terms of the disease severity. These results indicated that total antioxidant capacity and total oxidant status may not be the determining factor on the disease severity.
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