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- W1974408096 endingPage "142" @default.
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- W1974408096 abstract "A bstract : Vitamin E is essential for normal neurological function. It is the major lipid‐soluble, chain‐breaking antioxidant in the body, protecting the integrity of membranes by inhibiting lipid peroxidation. Mostly on the basis of symptoms of primary vitamin E deficiency, it has been demonstrated that vitamin E has a central role in maintaining neurological structure and function. Orally supplemented vitamin E reaches the cerebrospinal fluid and brain. Vitamin E is a generic term for all tocopherols and their derivatives having the biological activity of RRR‐α‐tocopherol, the naturally occurring stereoisomer compounds with vitamin E activity. In nature, eight substances have been found to have vitamin E activity: α‐, β‐, γ‐ and δ‐tocopherol; and α‐, β‐, γ‐ and δ‐tocotrienol. Often, the term vitamin E is synonymously used with α‐tocopherol. Tocotrienols, formerly known as ζ, ε, or η‐tocopherols, are similar to tocopherols except that they have an isoprenoid tail with three unsaturation points instead of a saturated phytyl tail. Although tocopherols are predominantly found in corn, soybean, and olive oils, tocotrienols are particularly rich in palm, rice bran, and barley oils. Tocotrienols possess powerful antioxidant, anticancer, and cholesterol‐lowering properties. Recently, we have observed that α‐tocotrienol is multi‐fold more potent than α‐tocopherol in protecting HT4 and primary neuronal cells against toxicity induced by glutamate as well as by a number of other toxins. At nanomolar concentration, tocotrienol, but not tocopherol, completely protected neurons by an antioxidant‐independent mechanism. Our current work identifies two major targets of tocotrienol in the neuron: c‐Src kinase and 12‐lipoxygenase. Dietary supplementation studies have established that tocotrienol, fed orally, does reach the brain. The current findings point towards tocotrienol as a potent neuroprotective form of natural vitamin E." @default.
- W1974408096 created "2016-06-24" @default.
- W1974408096 creator A5020018621 @default.
- W1974408096 creator A5029107258 @default.
- W1974408096 creator A5056267400 @default.
- W1974408096 date "2004-12-01" @default.
- W1974408096 modified "2023-10-18" @default.
- W1974408096 title "Tocotrienol: The Natural Vitamin E to Defend the Nervous System?" @default.
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