Effects of inorganic nitrate supplementation on cardiovascular function and exercise tolerance in heart failure

Journal article


Ferguson, Scott K., Woessner, Mary N., Holmes, Michael J., Belbis, Michael D., Carlström, Mattias, Weitzberg, Eddie, Allen, Jason D. and Hirai, Daniel M.. (2021). Effects of inorganic nitrate supplementation on cardiovascular function and exercise tolerance in heart failure. Journal of Applied Physiology. 130(4), pp. 914-922. https://doi.org/10.1152/JAPPLPHYSIOL.00780.2020
AuthorsFerguson, Scott K., Woessner, Mary N., Holmes, Michael J., Belbis, Michael D., Carlström, Mattias, Weitzberg, Eddie, Allen, Jason D. and Hirai, Daniel M.
Abstract

Heart failure (HF) results in a myriad of central and peripheral abnormalities that impair the ability to sustain skeletal muscle contractions and, therefore, limit tolerance to exercise. Chief among these abnormalities is the lowered maximal oxygen uptake, which is brought about by reduced cardiac output and exacerbated by O2 delivery-utilization mismatch within the active skeletal muscle. Impaired nitric oxide (NO) bioavailability is considered to play a vital role in the vascular dysfunction of both reduced and preserved ejection fraction HF (HFrEF and HFpEF, respectively), leading to the pursuit of therapies aimed at restoring NO levels in these patient populations. Considering the complementary role of the nitrate-nitrite-NO pathway in the regulation of enzymatic NO signaling, this review explores the potential utility of inorganic nitrate interventions to increase NO bioavailability in the HFrEF and HFpEF patient population. Although many preclinical investigations have suggested that enhanced reduction of nitrite to NO in low Po2 and pH environments may make a nitrate-based therapy especially efficacious in patients with HF, inconsistent results have been found thus far in clinical settings. This brief review provides a summary of the effectiveness (or lack thereof) of inorganic nitrate interventions on exercise tolerance in patients with HFrEF and HFpEF. Focus is also given to practical considerations and current gaps in the literature to facilitate the development of effective nitrate-based interventions to improve exercise tolerance in patients with HF.

Keywordsbeetroot juice; fatigue; nitric oxide; nitrite; skeletal muscle
Year2021
JournalJournal of Applied Physiology
Journal citation130 (4), pp. 914-922
PublisherAmerican Physiological Society
ISSN8750-7587
Digital Object Identifier (DOI)https://doi.org/10.1152/JAPPLPHYSIOL.00780.2020
Scopus EID2-s2.0-85103608487
Research or scholarlyResearch
Page range914-922
Publisher's version
License
All rights reserved
File Access Level
Controlled
Output statusPublished
Publication dates
Online28 Mar 2021
Publication process dates
Accepted13 Jan 2021
Deposited15 Oct 2021
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