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Differential neuroprotective effect of curcuminoid formulations in aluminum chloride–induced Alzheimer’s disease

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Abstract

Alzheimer’s disease (AD) is a slowly progressive brain degenerative disorder which gradually impairs memory, thinking, and ability to perform easy routine tasks. This degenerative disorder mainly targets the elderly people and has imposed an endemic burden on society. Hence, there is a crucial need to investigate the efficacious herbal pharmacotherapies that can effectively mitigate and prevent the pathological hallmarks of AD. The current study aims to explore the potential efficacy of curcuminoid-rich extract (CRE) and its ternary complex (TC). Experimental rodents were administered with AlCl3 (300 mg/kg) to induce AD and treated with rivastigmine, curcuminoid crude extract, CRE, and TC orally for three consecutive weeks. Neurobehavioral, biochemical, and histopathological studies were performed from the last week of the study period. The mRNA expression of different pathological biomarkers was estimated by RT-qPCR analysis. The results of the study suggested that CRE and TC significantly improved the behavioral, biochemical parameters and acetylcholinesterase inhibitory activity in treatment groups. Histological analysis was also carried out indicating that the neurodegenerative changes and neuronal loss were stabilized by CRE and TC supplementation. CRE and TC supplementation remarkably downregulated the interleukin-1α, tumor necrosis factor-α, interleukin-1β, acetylcholinesterase, and β-secretase pathological gene expression. Hence, it was concluded that CRE and TC may act as promising candidates in the prevention of AD via numerous underlying signaling pathways.

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All data generated and/or analyzed during this study are included in this published article.

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Authors

Contributions

AS: literature search, data curation, experimental analysis, investigation, writing—original draft, and validation. KR: investigation, conceptualization, writing—final draft, and editing. MSHA: project administration, supervision, conceptualization, methodology, writing—original draft preparation, and editing. MA and ZC: data curation. PP and MAS prepared and standardized the extracts.

Corresponding author

Correspondence to Muhammad Sajid Hamid Akash.

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This study was ethically approved from the Institutional Review Board (GCUF/ERC/2196) of Government College University Faisalabad (GCUF).

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The authors declare no competing interests.

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Responsible Editor: Lotfi Aleya

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Shabbir, A., Rehman, K., Akash, M.S.H. et al. Differential neuroprotective effect of curcuminoid formulations in aluminum chloride–induced Alzheimer’s disease. Environ Sci Pollut Res 29, 67981–67996 (2022). https://doi.org/10.1007/s11356-022-20593-4

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  • DOI: https://doi.org/10.1007/s11356-022-20593-4

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