The ambivalence of vitamin E in atherogenesis. |
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Authors: | R Stocker |
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Institution: | Biochemistry Group, The Heart Research Institute, 145 Missenden Rd, Camperdown, NSW 2050, Australia. r.stocker@hri.org.au |
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Abstract: | The early events in atherogenesis might be due to the oxidation of low- density lipoprotein. The antioxidant vitamin E, therefore, has received much attention as a potential anti-atherogenic agent. Recent mechanistic studies of the early stage of lipoprotein-lipid oxidation show that the role of vitamin E in this process is not simply that of a classical antioxidant. Unless additional compounds are present, vitamin E can have antioxidant, neutral or pro-oxidant activity. This more complex function is reflected in the results of vitamin-E-intervention studies of atherosclerosis in animals and of controlled prospective trials on the incidence of cardiovascular disease in humans, which, overall, are inconclusive. |
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