Diverse functions of antioxidants |
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Authors: | Noguchi N Watanabe A Shi H |
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Affiliation: | a Research Center for Advanced Science and Technology, University of Tokyo 4-6-1 Komaba, Meguro, Tokyo, Japan |
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Abstract: | All biological organisms have developed a defense system against oxidative stress, which is comprised of many kinds of antioxidants. Antioxidants are classified by function into four categories; preventive antioxidants; radical scavenging antioxidants; repair and de novo antioxidants; and adaptation. Radical scavenging antioxidants have the greatest advantage. Although the activities of radical scavenging antioxidant are determined by several factors, their chemical structure is of key importance. Furthermore, radical scavenging antioxidants have been explored to have a novel function by which they regulate gene expression of cell. |
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