Enzyme-dependent ascorbate recycling in human erythrocytes: role of thioredoxin reductase. Mendiratta S, Qu ZC, May JM (1998) Free Radic Biol Med 25: 221-8 Vitamin C recycling and function in human monocytic U-937 cells. May JM, Mendiratta S, Qu ZC, Loggins E (1999) Free Radic Biol Med 26: 1513-23 Macrophage uptake and recycling of ascorbic acid: response to activation by lipopolysaccharide. May JM, Huang J, Qu ZC (2005) Free Radic Biol Med 39: 1449-59 Ascorbate recycling in human erythrocytes: role of GSH in reducing dehydroascorbate. May JM, Qu ZC, Whitesell RR, Cobb CE (1996) Free Radic Biol Med 20: 543-51 Ascorbic acid recycling by cultured beta cells: effects of increased glucose metabolism. Steffner RJ, Wu L, Powers AC, May JM (2004) Free Radic Biol Med 37: 1612-21 Uptake, recycling, and antioxidant actions of alpha-lipoic acid in endothelial cells. Jones W, Li X, Qu ZC, Perriott L, Whitesell RR, May JM (2002) Free Radic Biol Med 33: 83-93 Human erythrocyte recycling of ascorbic acid: relative contributions from the ascorbate free radical and dehydroascorbic acid. May JM, Qu ZC, Cobb CE (2004) J Biol Chem 279: 14975-82 Reduction of dehydroascorbate to ascorbate by the selenoenzyme thioredoxin reductase. May JM, Mendiratta S, Hill KE, Burk RF (1997) J Biol Chem 272: 22607-10 Reduction of the ascorbyl free radical to ascorbate by thioredoxin reductase. May JM, Cobb CE, Mendiratta S, Hill KE, Burk RF (1998) J Biol Chem 273: 23039-45 Requirement for GSH in recycling of ascorbic acid in endothelial cells. May JM, Qu Z, Li X (2001) Biochem Pharmacol 62: 873-81 Role of ascorbic acid in transferrin-independent reduction and uptake of iron by U-937 cells. May JM, Qu ZC, Mendiratta S (1999) Biochem Pharmacol 57: 1275-82 Similarities in the metabolism of alloxan and dehydroascorbate in human erythrocytes. Davis JL, Mendiratta S, May JM (1998) Biochem Pharmacol 55: 1301-7 Selenium spares ascorbate and alpha-tocopherol in cultured liver cell lines under oxidant stress. Li X, Hill KE, Burk RF, May JM (2001) FEBS Lett 508: 489-92 Ascorbic acid blunts oxidant stress due to menadione in endothelial cells. May JM, Qu ZC, Li X (2003) Arch Biochem Biophys 411: 136-44 Transport and intracellular accumulation of vitamin C in endothelial cells: relevance to collagen synthesis. May JM, Qu ZC (2005) Arch Biochem Biophys 434: 178-86 Protection and recycling of alpha-tocopherol in human erythrocytes by intracellular ascorbic acid. May JM, Qu ZC, Mendiratta S (1998) Arch Biochem Biophys 349: 281-9 Mitochondrial uptake and recycling of ascorbic acid. Li X, Cobb CE, Hill KE, Burk RF, May JM (2001) Arch Biochem Biophys 387: 143-53 Ascorbate uptake and antioxidant function in peritoneal macrophages. May JM, Li L, Qu ZC, Huang J (2005) Arch Biochem Biophys 440: 165-72 Mitochondrial recycling of ascorbic acid from dehydroascorbic acid: dependence on the electron transport chain. Li X, Cobb CE, May JM (2002) Arch Biochem Biophys 403: 103-10 Mitochondrial recycling of ascorbic acid as a mechanism for regenerating cellular ascorbate. May JM, Li L, Qu ZC, Cobb CE (2007) Biofactors 30: 35-48 Ascorbic acid efficiently enhances neuronal synthesis of norepinephrine from dopamine. May JM, Qu ZC, Nazarewicz R, Dikalov S (2013) Brain Res Bull 90: 35-42 Inhibition of aldose reductase in human erythrocytes by vitamin C. Vincent TE, Mendiratta S, May JM (1999) Diabetes Res Clin Pract 43: 1-8 Ascorbic acid spares alpha-tocopherol and decreases lipid peroxidation in neuronal cells. Li X, Huang J, May JM (2003) Biochem Biophys Res Commun 305: 656-61 Extracellular reduction of the ascorbate free radical by human erythrocytes. May JM, Qu Zc, Cobb CE (2000) Biochem Biophys Res Commun 267: 118-23 Recycling of vitamin C by mammalian thioredoxin reductase. May JM (2002) Methods Enzymol 347: 327-32
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