Cited by 43Cardiovascular and exercise physiologyNitric Oxide and Endothelin EffectsCardiovascular Health and Disease Prevention

Endothelin-A -Mediated Vasoconstriction During Exercise With Advancing Age

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Barrett-O’Keefe, Zachary, Ives, Stephen J., Trinity, Joel D., Morgan, Garrett, Rossman, Matthew J., Donato, Anthony J., Runnels, Sean, Morgan, David E. +4 more·2015·The Journals of Gerontology Series A: Biological Sciences and Medical Sciences

Abstract

The endothelin-1 vasoconstrictor pathway contributes to age-related elevations in resting peripheral vascular tone primarily through activation of the endothelin subtype A (ET(A)) receptor. However, the regulatory influence of ET(A)-mediated vasoconstriction during exercise in the elderly is unknown. Thus, in 17 healthy volunteers (n = 8 young, 24±2 years; n = 9 old, 70±2 years), we examined leg blood flow, mean arterial pressure, leg arterial-venous oxygen (O2) difference, and leg O2 consumption (VO2) at rest and during knee-extensor exercise before and after intra-arterial administration of the ET(A) antagonist BQ-123. During exercise, BQ-123 administration increased leg blood flow to a greater degree in the old (+29±5 mL/min/W) compared with the young (+16±3 mL/min/W). The increase in leg blood flow with BQ-123 was accompanied by an increase in leg VO2 in both groups, suggesting a reduced efficiency following ET(A) receptor blockade. Together, these findings have identified an age-related increase in ET(A)-mediated vasoconstrictor activity that persists during exercise, suggesting an important role of this pathway in the regulation of exercising skeletal muscle blood flow and maintenance of arterial blood pressure in the elderly.

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  • Sympathetic vascular transduction is likely affected by circulating vasoconstrictors and vasodilators such as endothelin-1 and nitric oxide.

    “In addition, sympathetic vascular transduction is likely influenced by circulating vasoconstrictors and vasodilators such as endothlin-138 and nitric oxide.39”

    From Reducing Dietary Sodium to 1000 mg per Day Reduces Neurovascular Transduction Without Stimulating Sympathetic Outflow (2019) · cites this paper as [38]

    The Perspectives (p. 9) report that endothelin-A signaling constrains blood flow during exercise in older adults, supporting endothelin-1’s role in vascular tone. The paper does not establish that endothelin-1 alters sympathetic vascular transduction specifically. Nitric oxide has a separate citation in the citing sentence and is not assessed here. (LLM, conf=0.82)

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Authors
Barrett-O’Keefe, Z., Ives, S. J., Trinity, J. D., Morgan, G., Rossman, M. J., Donato, A. J., Runnels, S., Morgan, D. E., Gmelch, B. S., Bledsoe, A. D., Richardson, R. S., & Wray, D. W.
Affiliations
  • University of Utah (US)
  • VA Salt Lake City Healthcare System (US)
Venue
The Journals of Gerontology Series A: Biological Sciences and Medical Sciences
Published
2014-05-12
Volume
70
Issue
5
Pages
554-565
ISSN
  • 1079-5006 (ISSN-L)
  • 1758-535X
OpenAlex
W2150525772
Cited by
43
References
86
Citations by year
2025: 1 · 2024: 1 · 2023: 1 · 2022: 6 · 2021: 3 · 2020: 5 · 2019: 5 · 2018: 4 · 2017: 3 · 2016: 4 · 2015: 9 · 2014: 1
FWCI
12.20
Type
journal article
Language
en
Open access
Locations
  • The Journals of Gerontology Series A (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Creative Matter (Skidmore College) (submittedVersion)
Funders
  • National Institute on Aging (R21AG043952, K02AG045339, R01AG040297)
  • National Heart, Lung, and Blood Institute (R01HL118313, P01HL091830)
Topics
  • Health Sciences › Medicine › Complementary and alternative medicine › Cardiovascular and exercise physiology
  • Health Sciences › Medicine › Physiology › Nitric Oxide and Endothelin Effects
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiovascular Health and Disease Prevention
Keywords
endothelin-1, ETA receptor, vasoconstriction, aging, physical activity, leg blood flow, BQ-123, skeletal muscle oxygen consumption, arterial blood pressure, peripheral vascular tone, knee extension exercise, older adults
MeSH terms
Aged, Aging, Female, Humans, Leg, Lipids, Male, Oxygen Consumption, Peptides, Cyclic, Vasoconstriction, Exercise, Young Adult, Arterial Pressure, Healthy Volunteers, Endothelin Receptor Antagonists

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