Abstract
This study aimed to profile the clinical progression, demographics, and oxidative status of COVID-19 patients, correlating with disease severity. The study included 143 participants: 93 patients with COVID-19 (28 outpatients, 65 inpatients), and 50 control participants. Thiobarbituric acid reactive substance (TBARS) was used as an oxidative damage marker. Antioxidant activity was assessed via quantification of Vitamin C, sulfhydryl groups, ferric reduction ability of plasma (FRAP), Uric acid (UA), and evaluation of delta-aminolevulinate dehydratase (δ-ALA-D) enzymatic activity. Geriatric patients, especially men, with comorbidities such as obesity and/or chronic diseases were more likely to develop the most severe form of COVID-19. The activity of the δ-ALA-D was lower in inpatients, and there was no significant difference with the outpatient. Antioxidants decreased in COVID-19 groups, while lipid peroxidation increased. FRAP and Vitamin C decreased with evolution of the disease. Oxidative stress could be used as a predictor of worsening clinical condition.
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