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Neuroprotective effect of sesamol against aluminum nanoparticle-induced toxicity in rats

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Abstract

Alumina nanoparticles (ALNPs) are widely used causing neurobehavioral impairment in intoxicated animals and humans. Sesamol (SML) emerged as a natural phytochemical with potent antioxidant and anti-inflammatory properties. However, no study has directly tested the potential of SML to protect against AlNP-induced detrimental effects on the brain. AlNPs (100 mg/kg) were orally administered to rats by gavage with or without oral sesamol (100 mg/kg) for 28 days. In AlNP-intoxicated group, the brain AChE activity was elevated. The concentrations of MDA and 8-OHdG were increased suggesting lipid peroxidation and oxidative DNA damage. GSH depletion with inhibited activities of CAT and SOD were demonstrated. Serum levels of IL-1β and IL-6 were elevated. The expressions of GST, TNF-α, and caspase-3 genes in the brain were upregulated. Histopathologically, AlNPs induced hemorrhages, edema, neuronal necrosis, and/or apoptosis in medulla oblongata. The cerebellum showed loss of Purkinje cells, and the cerebrum showed perivascular edema, neuronal degeneration, necrosis, and neuronal apoptosis. However, concomitant administration of SML with AlNPs significantly ameliorated the toxic effects on the brain, reflecting antioxidant, anti-inflammatory, and anti-apoptotic effects of SML. Considering these results, sesamol could be a promising phytochemical with neuroprotective activity against AlNP-induced neurotoxicity.

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Acknowledgements

We thank consult of Central Labs in both Faculty of Veterinary Medicine, University of Sadat City, and Faculty of Veterinary Medicine, Cairo University, as we had bench space to work.

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Contributions

Shimaa Abou-Zeid: conceptualization, investigation, data analysis, writing original draft. Basma Elkhadrawey: methodology. Anis Anis: histopathological examination, writing original draft. Huda AbuBakr: gene expression study, writing original draft. Badr El-Bialy: methodology and revising the manuscript. Hesham Elsabbagh: conceived the idea and managed the study. Nermeen El-Borai: conceptualization, investigation, data analysis, writing original draft. All authors have contributed to writing this article, editing, and have critically read and revised the manuscript, and approved its submission for publication.

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Correspondence to Shimaa M. Abou-Zeid.

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Ethics approval and consent to participate this study was approved by the Institutional Animal Care and Use Committee (IACUC) (Approval number: VUSC-007-1-20), Faculty of Veterinary Medicine, University of Sadat City, Egypt.

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All the authors have given the consent to publish the paper.

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The authors declare no competing interests.

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Responsible Editor: Mohamed M. Abdel-Daim

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Abou-Zeid, S., Elkhadrawey, B., Anis, A. et al. Neuroprotective effect of sesamol against aluminum nanoparticle-induced toxicity in rats. Environ Sci Pollut Res 28, 53767–53780 (2021). https://doi.org/10.1007/s11356-021-14587-x

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  • DOI: https://doi.org/10.1007/s11356-021-14587-x

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