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Efflux of hepatic ascorbate: a potential contributor to the maintenance of plasma vitamin C

Upston, Joanne; Karjalainen, Ari; Bygrave, Frank L; Stocker, Roland


Ascorbate (AH, the reduced form of vitamin C) is an important radical scavenger and antioxidant in human plasma; the resulting ascorbyl radical can disproportionate to AH and dehydroascorbic acid (DHA). Here we address potential maintenance mechanism(s) for extracellular AH by examining the ability of cells to convert extracellularly presented DHA to AH. DHA was rapidly transported into human liver (HepG2), endothelial and whole blood cells in vitro by plasma membrane glucose transporters and...[Show more]

CollectionsANU Research Publications
Date published: 1999
Type: Journal article
Source: Biochemical Journal
DOI: 10.1042/0264-6021:3420049


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