Vitamin C and Antioxidants Research Peer reviewed

Turmeric nanovesicles loaded with vitamins C and E attenuate oxidative stress and improve cognitive outcomes in rats with memory deficits

Amina Jiyah, Ibrahim Bulama, Andrew Onu, Abubakar Yaya Gimba and 4 more

Therapeutic Delivery | Aug 26, 2026

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What this paper is about

Vitamin-loaded TNVs increased brain levels of vitamins E and C, enhanced antioxidant defense and cognitive abilities, and reduced acetylcholinesterase activity in dementia rats, and TNV-C and TNV-E protected against neuroinflammation and neuritic plaque formation.

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AIM: Oxidative stress (OS) contributes to Alzheimer's disease (AD) pathology. Vitamins C and E target OS, but their efficacies are limited by poor intracellular delivery. Encapsulation in nanovesicles (NVs) may improve targeted delivery for AD treatment. METHODS: Forty-five rats were randomly assigned to nine groups (n = 5 per group): normal control, scopolamine control, vitamin C, vitamin E, vitamin C + E, turmeric NVs (TNV), TNV-C, TNV-E, and donepezil. Treatment was administered intraperitoneally (IP) for one week before induction of the AD-like model using daily IP administration of scopolamine and continued for two weeks. During this time, behavioral activities were conducted, and brain tissues were collected for analysis. RESULTS: Vitamins C and E showed encapsulation efficiencies of 12.36 ± 1.01% and 55.24 ± 5.82%, with loading capacities of 14.34 ± 1.37% and 40.70 ± 3.52, respectively. TNV-C and TNV-E increased brain levels of vitamins E and C, enhanced antioxidant defense and cognitive abilities, and reduced acetylcholinesterase activity in dementia rats. TNV-C and TNV-E also protected against neuroinflammation and neuritic plaque formation. Vitamin-loaded TNVs were more effective than free vitamins in improving antioxidant status and cognitive outcomes in AD rats. CONCLUSION: This study highlights the potential of vitamin-loaded NVs as therapeutics for AD.

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Amina Jiyah

first | Usmanu Danfodiyo University | ORCID 0009-0009-8370-6060

Ibrahim Bulama

middle | University of Maiduguri | ORCID 0000-0002-2297-1663

Andrew Onu

middle | Usmanu Danfodiyo University

Abubakar Yaya Gimba

middle | Usmanu Danfodiyo University

Abdullahi Y. Abbas

middle | Usmanu Danfodiyo University

Yusuf Saidu

middle | Usmanu Danfodiyo University

Lawal Suleiman Bilbis

middle | Usmanu Danfodiyo University

Suleiman Alhaji Muhammad

last | Usmanu Danfodiyo University | ORCID 0000-0003-2421-3556

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BibTeX

@article{Jiyah2026Turmeric,
  title = {Turmeric nanovesicles loaded with vitamins C and E attenuate oxidative stress and improve cognitive outcomes in rats with memory deficits},
  author = {Amina Jiyah and Ibrahim Bulama and Andrew Onu and Abubakar Yaya Gimba and Abdullahi Y. Abbas and Yusuf Saidu and Lawal Suleiman Bilbis and Suleiman Alhaji Muhammad},
  journal = {Therapeutic Delivery},
  year = {2026},
  doi = {10.1080/20415990.2026.2715894},
  url = {https://doi.org/10.1080/20415990.2026.2715894}
}

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