Protective Effect of Quercetin on Atrazine‑Induced Oxidative Stress in the Liver, Kidney, Brain, and Heart of Adult Wistar Rats


  • College of Natural Sciences, Redeemer’s University, Department of Chemical Sciences, Redemption City, Ogun, Nigeria


Background: The conflicting roles of quercetin against tissue pathologies associated with oxidative stress are known. Objective: To evaluate the effect of quercetin at doses of 5 mg/kg (Q5) or 10 mg/kg (Q10) against atrazine (120 mg/kg, ATZ)-induced oxidative stress in various tissues of rats. Materials and Methods: Adult male albino Wistar rats were administered ATZ, Q5, and Q10 alone or in combination for 16 days. At the end of the 16th day, the animals were sacrificed by cervical dislocation; and the blood, heart, brain, kidney and liver were collected and used for biochemical determinations and histopathological examination. Results: Q10 but not Q5 attenuated ATZ-induced increase in the levels of serum enzyme markers sorbitol dehydrogenase (SDH), acid phosphatase (ACP), alkaline phosphatase (ALP), and aspartate aminotransferase (AST). The heart was less susceptible to ATZ-induced oxidative stress than the liver, kidney, and brain of treated animals, and there were tendencies for synergistic effects in the heart and liver of Q5 + ATZ-treated rats. Oxidative stress-induced by ATZ in terms of increased lipid peroxidation level and superoxide dismutase (SOD) activity was decreased in the brain of the Q5 + ATZ-treated rats but not that of the Q10 + ATZtreated rats. Conversely, histopathological changes and oxidative stress-induced by ATZ in terms of elevated lipid peroxidation level, decreased SOD, and catalase (CAT) activities were prevented in the kidney and liver of the Q10 + ATZ-treated rats but not that of the Q5 + ATZ-treated rats. Conclusion: Quercetin at the investigated doses and especially the low dose may not protect against ATZ-induced oxidative stress in rat tissues in an overall sense.


Atrazine, malondialdehyde, oxidative stress, quercetin, serum marker enzymes

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