Journal
CURRENT MEDICINAL CHEMISTRY
Volume 30, Issue 35, Pages 4032-4047Publisher
BENTHAM SCIENCE PUBL LTD
DOI: 10.2174/0929867330666221202152540
Keywords
Polyphenol; Alzheimer's disease; amyloid-beta; tau protein; free radical scavenging; oxidative stress
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Alzheimer's Disease (AD) is a neurodegenerative disorder in the aged population, and polyphenols from various plant sources have been found to have antioxidant and anti-inflammatory properties, making them potential candidates for AD treatment. These polyphenols can protect neurons against oxidative stress and deposition of harmful proteins, thus inhibiting the progression of the disease. In this review, various polyphenols such as hesperidin, resveratrol, and curcumin are highlighted for their neuroprotective effects and potential as therapeutic agents for AD.
Alzheimer's Disease (AD) is a successive neurodegenerative disorder in the aged population. Many chemicals and phytochemicals are used to treat AD. Polyphenols which occur widely in various fruits, vegetables, beverages, and some other plant sources are gaining importance in AD treatment. Polyphenols comprise various subcategories, such as phenolic acids, lignans, tannins, stilbenes, hydroxybenzoic acid, hydroxycinnamic acid, and flavonoids. These compounds, as sole entities or in combination, can be used for treating AD because they have an abundance of antioxidants that are reported to be effective in free radical scavenging, metal ion chelating, and anti-inflammatory activities. Polyphenols of various plant origins have been studied, and these have been supported by in vitro assays and in vivo studies in rodents. These molecules protect neurons against oxidative stress and deposition of amyloid-beta (A beta) and tau proteins which play a vital role in the pathogenesis of AD. Consumption of wine and other foods rich in polyphenols has a beneficial effect on the neuronal signaling pathways, playing a vital role in shielding neuronal cells from neurodegeneration. Their ability to reduce free radicals and chelate metals are of great advantage. In this review, we highlight the various polyphenols that inhibit neuronal damage and progression of AD while also providing a cure. Some of the polyphenols covered are hesperidin, resveratrol, curcumin, catechin, kaempferol, and quercetin. The mechanisms of the actions of three polyphenols are also elaborated.
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