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Research Article
Shimaa Abou-Zeid
University of Sadat City
Corresponding Author
ORCiD: https://orcid.org/0000-0001-6804-5967
License:
This work is licensed under a CC BY 4.0 License. Read Full License
Alumina nanoparticles (AlNPs) are widely used causing neurobehavioral impairment in intoxicated animals and human. 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 AlNPs 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 AlNPs-intoxicated group, 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 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 promising phytochemical with neuroprotective activity against AlNPs-induced neurotoxicity.
Keywords
Alumina nanoparticles, sesamol, neurotoxicity, oxidative stress, histopathology
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CURRENT STATUS: Under Review
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Posted 05 Apr, 2021
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Editorial decision: Major Revision
On 06 May, 2021
Reviews received
Received 31 Mar, 2021
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On 24 Mar, 2021
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A new preprint design is coming!
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This preprint is under consideration at Environmental Science and Pollution Research. A preprint is a preliminary version of a manuscript that has not completed peer review at a journal. Research Square does not conduct peer review prior to posting preprints. The posting of a preprint on this server should not be interpreted as an endorsement of its validity or suitability for dissemination as established information or for guiding clinical practice.
Learn more about In Review
Research Article
Shimaa Abou-Zeid
University of Sadat City
Corresponding Author
ORCiD: https://orcid.org/0000-0001-6804-5967
Badges
Prescreen
This manuscript passed our Prescreen assessment
Complete author information
Appropriate declaration statements
Potential risks to human health
Prescreen
Peer Review Timeline
CURRENT STATUS: Under Review
Version 1
Posted 05 Apr, 2021
No community comments so far
Editorial decision: Major Revision
On 06 May, 2021
Reviews received
Received 31 Mar, 2021
Reviewers invited
Invitations sent on 31 Mar, 2021
Editor invited
On 31 Mar, 2021
Editor assigned
On 24 Mar, 2021
First submitted
On 23 Mar, 2021
Metrics
Comments: 0
PDF Downloads: ...
HTML Views: ...
License:
This work is licensed under a CC BY 4.0 License. Read Full License
Alumina nanoparticles (AlNPs) are widely used causing neurobehavioral impairment in intoxicated animals and human. 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 AlNPs 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 AlNPs-intoxicated group, 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 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 promising phytochemical with neuroprotective activity against AlNPs-induced neurotoxicity.
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
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