Related Experiment Video
Updated: Jun 16, 2025
Evaluation of Oxidative Stress in Biological Samples Using the Thiobarbituric Acid Reactive Substances Assay
Published on: May 12, 2020
Total Antioxidant Status and Oxidative Stress in Patients with COVID-19 Infection
Mohit Jindal1, Sarabmeet Singh Lehl2, Shivani Jaswal3
1Ex-postgraduate Student, Department of General Medicine, Government Medical College and Hospital, Chandigarh, India.
Introduction:
Oxidative stress (OS) may have a role in the pathogenesis and severity of the coronavirus disease 2019 (COVID-19) disease. The present study was conducted to estimate the association of inflammatory markers, total antioxidant status (TAS), and malondialdehyde (MDA) levels with the severity of the disease and to identify their trends after recovery.
Materials And Methods:
Adult patients admitted with moderate or severe COVID-19 were included after obtaining written informed consent from patient or next of kin. Patients who were critically ill, on ventilator, or in sepsis/septic shock were excluded. Levels of inflammatory markers, TAS, and OS as measured by MDA were estimated within 24 hours of admission and reevaluated at 12 weeks following discharge.
Results:
The mean age of the 40 patients (42.5% females) was 55 ± 15 years. TAS values (in trolox equivalents/L) were significantly reduced in severe compared to moderate COVID-19 patients at admission (7.2 ± 4.19 vs 12.3 ± 5.21). These increased at 12 weeks after discharge. The MDA levels (in nmol/mL) were significantly higher in severe in comparison to moderate disease (7.1 ± 2.68 vs 4.1 ± 1.81). These values showed a downward trend 12 weeks after discharge in severe disease group. Admission levels of interleukin-6 (IL-6), D-dimer, and lactate dehydrogenase (LDH) were statistically higher in severe COVID-19 patients in contrast to moderate disease.
Conclusion:
Moderate and severe COVID-19 are associated with a state of high OS and a low total antioxidant levels which tend to recover at 3 months following discharge.
