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The Neuroprotective Potential of Ocimum Plant Species: Seasoning the Mind with Sweet and Holy Basil

A. Vasincu,R. Rusu,D. Ababei,D. Bulea,O. Arcan,I. Vasincu,S. B. Beschea Chiriac,I. Popescu,W. Bild,V. Bild

Published 2025 in Nutrients

ABSTRACT

Neurodegenerative diseases (NDs) encompass a group of chronic conditions, characterized by neuronal losses in large areas of the brain, leading to cognitive and behavioral impairments. Alzheimer’s Disease (AD), the most common form of dementia, is a progressive ND, characterized by the accumulation of amyloid β and tau protein, entails cognitive decline, neuroinflammation, mitochondrial dysfunction, and blood–brain barrier impairment, with oxidative stress playing a critical role in its pathogenesis. To date, the available pharmacotherapy has shown limited efficacy, and multitarget activity of plant-derived neuroprotective bioactive compounds is currently in focus. This review synthesizes experimental evidence regarding Ocimum species with neuroprotective potential in AD, particularly Ocimum sanctum and Ocimum basilicum. These plants are rich in bioactive compounds including polyphenols, flavonoids, essential oils, and triterpenoids that synergistically scavenge reactive oxygen/nitrogen species, upregulate endogenous antioxidant enzymes (SOD, CAT, and GPx), and reduce lipid peroxidation. Furthermore, these extracts have demonstrated the ability to decrease β-amyloid accumulation and tau protein levels, key pathological features of AD. Even though additional research is required to fully assess their potential as therapeutic agents for NDs, by diving into the specific mechanisms through which they improve neurodegenerative processes, important steps can be made towards this endpoint.

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