Cited by 582Cardiovascular Health and Disease PreventionNitric Oxide and Endothelin EffectsAntioxidant Activity and Oxidative Stress

Ascorbic Acid Reverses Endothelial Vasomotor Dysfunction in Patients With Coronary Artery Disease

Levine, Glenn N., Frei, Balz, Koulouris, Spyridon N., Gerhard, Marie D., Keaney, John F., Vita, Joseph A.·1996·Circulation

Abstract

Background In the setting of atherosclerosis, endothelial vasomotor function is abnormal. Increased oxidative stress has been implicated as one potential mechanism for this observation. We therefore hypothesized that an antioxidant, ascorbic acid, would improve endothelium-dependent arterial dilation in patients with coronary artery disease. Methods and Results Brachial artery endothelium-dependent dilation in response to hyperemia was assessed by high-resolution vascular ultrasound before and 2 hours after oral administration of either 2 g ascorbic acid or placebo in a total of 46 patients with documented coronary artery disease. Plasma ascorbic acid concentration increased 2.5-fold 2 hours after treatment (46±8 to 114±11 μmol/L, P =.001). In the prospectively defined group of patients with an abnormal baseline response (<5% dilation), ascorbic acid produced marked improvement in dilation (2.0±0.6% to 9.7±2.0%), whereas placebo had no effect (1.1±1.5% to 1.7±1.5%, P =.003 for ascorbic acid versus placebo). Ascorbic acid had no effect on hyperemic flow or arterial dilation to sublingual nitroglycerin. Conclusions Ascorbic acid reverses endothelial vasomotor dysfunction in the brachial circulation of patients with coronary artery disease. These findings suggest that increased oxidative stress contributes to endothelial dysfunction in patients with atherosclerosis and that endothelial dysfunction may respond to antioxidant therapy.

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Crossref · 10.1161/01.cir.93.6.1107

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  • Hyperglycemic patients experiencing vasodilation have a positive effect following intravenous administration (24 mg/min for 10 min) or oral dose (6 g during 2 days) of vitamin C.

    “Hyperglycemic patients experiencing vasodilation have a positive effect following intravenous administration (24 mg/min for 10 min) or oral dose (6 g during 2 days) (Levine et al. 1996).”

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Authors
Levine, G. N., Frei, B., Koulouris, S. N., Gerhard, M. D., Keaney, J. F., & Vita, J. A.
Affiliations
Boston University (US)
Venue
Circulation
Published
1996-03-15
Volume
93
Issue
6
Pages
1107-1113
ISSN
  • 0009-7322 (ISSN-L)
  • 1524-4539
OpenAlex
W2035433779
Cited by
582
References
53
Citations by year
2026: 2 · 2025: 3 · 2024: 4 · 2023: 4 · 2022: 5 · 2021: 6 · 2020: 5 · 2019: 12 · 2018: 8 · 2017: 12 · 2016: 7 · 2015: 14 · 2014: 6 · 2013: 14 · 2012: 12
FWCI
34.16
Type
journal article
Language
en
Open access
closed
Locations
  • Circulation (publishedVersion, public-domain)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (1f32hl008635-01, 7r29hl049954-05, 1r01hl053398-01a1)
  • National Heart, Lung, and Blood Institute (HL 53398, HL-08635, HL49954)
Topics
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiovascular Health and Disease Prevention
  • Health Sciences › Medicine › Physiology › Nitric Oxide and Endothelin Effects
  • Health Sciences › Medicine › Biochemistry › Antioxidant Activity and Oxidative Stress
Keywords
vitamin C, endothelial dysfunction, endothelium-dependent vasodilation, coronary artery disease, oxidative stress, antioxidant therapy, brachial artery, atherosclerosis, hyperemic flow
MeSH terms
Adult, Aged, Aged, 80 and over, Antioxidants, Ascorbic Acid, Coronary Circulation, Coronary Disease, Endothelium, Vascular, Female, Humans, Male, Middle Aged, Nitric Oxide, Vasodilation

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