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Oxidative stress and level of antioxidant enzymes in drug-naive schizophrenics

M. Reyazuddin,S. A. Azmi,N. Islam,A. Rizvi

Published 2014 in Indian Journal of Psychiatry

ABSTRACT

Background: Schizophrenia is a chronic illness having varied etiology which affects cognition, emotion, perception, and other aspects of behavior. There are data which show possible role of oxidative stress and disturbance in antioxidant mechanisms in various neurological and neuropsychiatric disorders. Materials and Methods: Fifty drug-naive schizophrenic patients, who attended psychiatry outpatient department/inpatient department for the 1st time, were selected and compared with 50 age-sex matched healthy controls. The erythrocyte level of malondialdehyde (MDA) - a lipid peroxidation product and marker of oxidative stress, antioxidant enzymes - superoxide dismutase (SOD), glutathione peroxidase (GPX) was estimated. We also correlated the sociodemographic parameters and severity of illness (positive and negative syndrome scale score) with oxidative stress (MDA) and level of antioxidant enzymes (SOD, GPX). Results: The level of oxidative stress (MDA) was increased, and the levels of antioxidative enzymes (GPX and SOD) were decreased in schizophrenic patients as compared to normal healthy controls and the difference was statistically significant. No significant relationships of age, sex, educational status, marital status, and PANNS score with oxidative stress (MDA) and antioxidative enzymes (GPX and SOD) level in schizophrenic patients was found; but there was significant relationship of locality with oxidative stress (MDA) and antioxidative enzymes (GPX and SOD) level in schizophrenic patients was found. Urban population have a higher level of MDA, GPX, and SOD than the rural population. Conclusion: Our findings put great emphasis on the weak pro/antioxidant defense mechanisms and its role in the pathophysiology of schizophrenia. We can make recommendations of dietary nutritional supplementation and adjunct antioxidants therapy with antipsychotics to treat schizophrenics.

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