Antioxidant potential of Thymoquinone against Arsenic mediated neurotoxicity

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Abstract
Free Radicals and Antioxidants,2016,6,1,115-123.
Published:4th Aug 2015
Type:Original Article

Antioxidant potential of Thymoquinone against Arsenic mediated neurotoxicity

Fakiha Firdaus1, Mohd Faraz Zafeer1, Ehraz Anis1, Mahino Fatima1, M Mobarak Hossain1 and Mohammad Afzal2*

1Interdisciplinary Brain Research Centre, Faculty of Medicine, Aligarh Muslim University, Aligarh, Uttar Pradesh, India.

2Human Genetics and Toxicology Laboratory, Department of Zoology, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, Uttar Pradesh, India.

Abstract:

Introduction: Arsenic, an established poisonous metalloid has widespread occurrence in the environment which is posing a constant threat to health and survival of all living organisms. In view of arsenic induced oxidative stress and toxicity, this study focuses on the mitigatory role of thymoquinone, a major active component in the volatile oil of Nigella sativa (commonly known as black cumin); as its nutraceutical value can fulfil the demand of such dietary supplements in high risk population areas. Methods: In the current study, brain preparations of male wistar rats were used to assess different biochemical markers of oxidative stress and genotoxicity. Results: Significant and dose-dependent alterations in the level of enzymatic and biochemical biomarkers of oxidative stress were observed in the As-treated system. However, pre-treatment with thymoquinone brought about significant reduction in the As-induced neurotoxicity. Also, a significant decline in arsenic-induced DNA damage was recorded on pre-treatment with thymoquinone in comet assay. Conclusion: This study proves usefulness of antioxidant potential of thymoquione in mitigating the arsenic induced neurotoxicity.

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