Cited by 341Cardiovascular Health and Disease PreventionNitric Oxide and Endothelin EffectsCardiovascular and exercise physiology

Effect of acute and chronic ascorbic acid on flow‐mediated dilatation with sedentary and physically active human ageing

Eskurza, Iratxe, Monahan, Kevin D., Robinson, Jed A., Seals, Douglas R.·2004·The Journal of Physiology

Abstract

Peripheral conduit artery flow‐mediated dilatation decreases with ageing in humans. The underlying mechanisms and efficacy of preventive strategies are unknown. Brachial artery flow‐mediated dilatation was determined at baseline and after ascorbic acid (vitamin C) intravenous infusion and chronic supplementation (500 mg day −1 for 30 days) in three groups of healthy men: young sedentary ( n = 11; 25 ± 1 years, mean ± s.e.m. ), older sedentary ( n = 9; 64 ± 2), and older endurance‐exercise trained ( n = 9; 64 ± 2). At baseline, flow‐mediated dilatation (normalized for the hyperaemic stimulus) was ∼45% lower in the older (0.015 ± 0.001) versus young (0.028 ± 0.004) sedentary men ( P < 0.01), but was preserved in older exercising men (0.028 ± 0.004). Ascorbic acid infusion increased plasma concentrations > 15‐fold in all groups and restored flow‐mediated dilatation in the sedentary older men (to 0.023 ± 0.002; P > 0.1 versus other groups), with no effects in the other two groups. Oral ascorbic acid supplementation did not affect flow‐mediated dilatation in any group. Brachial artery endothelium‐independent dilatation (sublingual nitroglycerin) did not differ among the groups at baseline nor change with ascorbic acid administration. These results provide the first evidence for an important role of oxidative stress in both the impairment in peripheral conduit artery flow‐mediated dilatation with sedentary human ageing and the preservation of flow‐mediated dilatation with physically active ageing.

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Crossref · 10.1113/jphysiol.2003.057042

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  • Long-term exercise-trained men aged 50-76 do not show age impairment; they have similar endothelium-dependent dilation to acetylcholine-mediated vasodilation as healthy 22-35-year-old men.

    “50–76 yr-old, long-term, exercise-trained men do not show age impairment as they have similar endothelium-dependent dilation to acetylcholine-mediated vasodilation as healthy, 22–35-yr old men have (132, 167).”

    From Lack of Exercise Is a Major Cause of Chronic Diseases (2012) · cites this paper as [167]

  • If endothelial dysfunction is an early marker for atherosclerosis, prevention of endothelial dysfunction by a lifetime of physical activity would prevent most atherosclerosis reaching a clinical level at age 50-76 in men or even initiation of aerobic physical activity within lifestyle.

    “then a prevention of endothelial dysfunction by a lifetime of physical activity would therefore also prevent most of atherosclerosis reaching a clinical level at the age of 50–76 yrs in men (132, 167) or even initiation of aerobic physical activity within lifestyle (132).”

    From Lack of Exercise Is a Major Cause of Chronic Diseases (2012) · cites this paper as [167]

  • Traditional exogenous antioxidants and compounds with antioxidant properties reduce oxidative stress but have limited cellular uptake and do not accumulate where needed.

    “Traditional exogenous antioxidants (for example, vitamins E, C and D), as well as chemical compounds with described antioxidants properties (for example, coenzyme Q, α-lipoic acid and N-acetylcysteine), have been used to reduce oxidative stress279,280, but their cellular uptake is limited and they do not accumulate where needed281.”
  • The key mechanism for reduced nitric oxide bioavailability with aging is oxidative stress.

    “The key mechanism for reduced NO bioavailability with aging is oxidative stress (49, 164, 177).”

    From Inorganic nitrite supplementation for healthy arterial aging (2014) · cites this paper as [49]

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Authors
Eskurza, I., Monahan, K. D., Robinson, J. A., & Seals, D. R.
Affiliations
University of Colorado Boulder (US)
Venue
The Journal of Physiology
Publisher
Wiley
Published
2004-03-30
Volume
556
Issue
1
Pages
315-324
ISSN
  • 0022-3751 (ISSN-L)
  • 1469-7793
OpenAlex
W2154375091
Cited by
341
References
47
Citations by year
2026: 11 · 2025: 8 · 2024: 7 · 2023: 8 · 2022: 14 · 2021: 17 · 2020: 12 · 2019: 21 · 2018: 17 · 2017: 12 · 2016: 19 · 2015: 24 · 2014: 19 · 2013: 16 · 2012: 32
FWCI
6.98
Type
journal article
Language
en
Open access
closed
Locations
  • The Journal of Physiology (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (5r21ag019365-02)
  • National Institute on Aging (AG-13038, AG 19365, AG-00828, AG-06537, R37AG013038, R01AG013038, R01AG006537)
  • National Center for Research Resources (RR-00051, M01RR000051)
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 › Complementary and alternative medicine › Cardiovascular and exercise physiology
Keywords
vitamin C, flow-mediated dilation, brachial artery, aging, sedentary lifestyle, physical activity, oxidative stress, endothelial function, nitric oxide, intravenous infusion, oral supplementation
MeSH terms
Administration, Oral, Adult, Aged, Aging, Antioxidants, Ascorbic Acid, Brachial Artery, Humans, Infusions, Intravenous, Male, Middle Aged, Physical Education and Training, Physical Endurance, Regional Blood Flow, Time Factors, Vasodilation

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