Cited by 138Nitric Oxide and Endothelin EffectsCardiovascular Health and Disease PreventionAntioxidant Activity and Oxidative Stress

Dietary supplement with vitamin C prevents nitrate tolerance

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Bassenge, E, Fink, N, Skatchkov, M, Fink, B·1998·Journal of Clinical Investigation

Abstract

Enhanced formation of superoxide radicals has been proposed to play a major role in the development of nitrate tolerance in humans. We tested the effects of vitamin C (Vit-C) supplementation on glyceroltrinitrate (GTN)-induced hemodynamic effects during 3-d nonintermittent transdermal administration of GTN (0.4 mg/h) in nine healthy subjects. Tolerance development was monitored by changes in arterial pressure, dicrotic digital pulse pressure, and heart rate. Studies with GTN, Vit-C, or GTN/Vit-C were successively carried out at random in three different series in the same subjects. GTN treatment caused an immediate rise in arterial conductivity (a/b ratio of dicrotic pulse), but within 2 d of initiating GTN, the a/b ratio progressively decreased and reached basal levels. In addition, there was a progressive loss of the orthostatic decrease in blood pressure. However, coadministration of Vit-C and GTN fully maintained the GTN-induced changes in the orthostatic blood pressure, and the rise of a/b ratio was augmented by 310% for the duration of the test period. Changes in vascular tolerance in GTN-treated subjects were paralleled by upregulation of the activity of isolated platelets, which was also reversed by Vit-C administration. These findings demonstrate that dietary supplementation with Vit-C eliminates vascular tolerance and concomitant upregulation of ex vivo-washed platelet activity during long-term nonintermittent administration of GTN in humans.

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  1. Bassenge, E., and B. Fink. 1996. Suppression of nitrate induced toler- ance by vitamin C and other antioxidants. In The Biology of Nitric Oxide, Part 5. S. Moncada, J. Stamler, S. Gross, and E.A. Higgs, editors. Portland Press Ltd., London. 198.
  2. Skatchkov, M., B. Fink, S. Dikalov, O. Sommer, and E. Bassenge. 1996. Antioxidant mediated prevention of nitrate tolerance is achieved through im- mediate inactivation of peroxinitrite. In The Biology of Nitric Oxide: Part 5. S. Moncada, J. Stamler, S. Gross, and E.A. Higgs, editors. Portland Press Ltd. London. 199.

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Authors
Bassenge, E., Fink, N., Skatchkov, M., & Fink, B.
Affiliations
University of Freiburg (DE)
ORCID
Fink, B
Venue
Journal of Clinical Investigation
Published
1998-07-01
Volume
102
Issue
1
Pages
67-71
ISSN
0021-9738 (ISSN-L)
OpenAlex
W2027872608
Cited by
138
References
36
Citations by year
2024: 1 · 2023: 1 · 2021: 3 · 2020: 2 · 2019: 2 · 2018: 2 · 2017: 3 · 2015: 4 · 2014: 2 · 2013: 2 · 2012: 3
FWCI
8.18
Type
journal article
Language
en
Open access
Locations
  • Journal of Clinical Investigation (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • FreiDok plus (Universitätsbibliothek Freiburg) (submittedVersion)
Funders
Deutsche Herzstiftung
Topics
  • Health Sciences › Medicine › Physiology › Nitric Oxide and Endothelin Effects
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiovascular Health and Disease Prevention
  • Health Sciences › Medicine › Biochemistry › Antioxidant Activity and Oxidative Stress
Keywords
nitrate tolerance, vitamin C, vitamin C supplementation, nitroglycerin, superoxide, platelet function, orthostatic blood pressure, pulse pressure, vasodilation
MeSH terms
Adult, Aged, Aged, 80 and over, Ascorbic Acid, Blood Platelets, Blood Pressure, Calcium, Diet, Drug Tolerance, Female, Nitroglycerin, Cyclic GMP, Humans, Male, Middle Aged, Superoxides

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