Cited by 135Vitamin C and Antioxidants ResearchAmino Acid Enzymes and MetabolismIon Transport and Channel Regulation

THE MEMBRANE TRANSPORT OF ASCORBIC ACID*

Mann, George V., Newton, Pamela·1975·Annals of the New York Academy of Sciences

Abstract

A system for measuring the rate of transport of dehydroascorbate into human red blood cells shows Michaelis-Menten type kinetics with substrate inhibition at levels above 150 muM DHA. The addition of sugars impairs this transport in the diminishing hierarchy D-glucose, D-mannose, D-xylose, D-galactose, L-lyxose, D-araboascorbate, L-sorbose and 2-deoxy-D-ribose. The effect of glucose on transport of ascorbate is marked at physiological levels. Transport of DHA is accelerated by copper ion and allows dehydroascorbate to move against a concentration gradient. The evidence supports the hypotheses proposing that hyperglycemia will impair the intracellular availability of vitamin C.

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Crossref · 10.1111/j.1749-6632.1975.tb29285.x

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Authors
Mann, G. V., & Newton, P.
Affiliations
Vanderbilt University (US)
Corresponding author
Mann, George V.
Venue
Annals of the New York Academy of Sciences
Publisher
Wiley
Published
1975-09
Volume
258
Issue
1
Pages
243-252
ISSN
  • 0077-8923 (ISSN-L)
  • 1749-6632
OpenAlex
W1986734713
Cited by
135
References
17
Citations by year
2024: 1 · 2023: 1 · 2022: 1 · 2020: 4 · 2017: 1 · 2016: 3 · 2015: 3 · 2014: 3 · 2013: 2 · 2012: 4
FWCI
0.46
Type
journal article
Language
en
Open access
closed
Locations
  • Annals of the New York Academy of Sciences (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Nursing › Nutrition and Dietetics › Vitamin C and Antioxidants Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biochemistry › Amino Acid Enzymes and Metabolism
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Ion Transport and Channel Regulation
Keywords
vitamin C, dehydroascorbic acid, membrane transport, human erythrocytes, Michaelis-Menten kinetics, substrate inhibition, sugar, glucose, copper ions, hyperglycemia
MeSH terms
Adult, Ascorbic Acid, Biological Transport, Active, Carbon Monoxide, Cell Membrane, Ceruloplasmin, Copper, Dehydroascorbic Acid, Erythrocyte Aging, Erythrocytes, Glucose, Hexoses, Humans, Hydrogen-Ion Concentration, Kinetics, Male, Pentoses

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