Cited by 248Nitric Oxide and Endothelin EffectsRedox biology and oxidative stressEicosanoids and Hypertension Pharmacology

The Noncanonical Pathway for In Vivo Nitric Oxide Generation: The Nitrate-Nitrite-Nitric Oxide Pathway

Open access
Kapil, V., Khambata, R.S., Jones, D.A., Rathod, K., Primus, C., Massimo, G., Fukuto, J.M., Ahluwalia, A.·2020·Pharmacological Reviews

Abstract

In contrast to nitric oxide, which has well established and important roles in the regulation of blood flow and thrombosis, neurotransmission, the normal functioning of the genitourinary system, and the inflammation response and host defense, its oxidized metabolites nitrite and nitrate have, until recently, been considered to be relatively inactive. However, this view has been radically revised over the past decade and more. Much evidence has now accumulated demonstrating that nitrite serves as a storage form of nitric oxide, releasing nitric oxide preferentially under acidic and/or hypoxic conditions but also occurring under physiologic conditions: a phenomenon that is catalyzed by a number of distinct mammalian nitrite reductases. Importantly, preclinical studies demonstrate that reduction of nitrite to nitric oxide results in a number of beneficial effects, including vasodilatation of blood vessels and lowering of blood pressure, as well as cytoprotective effects that limit the extent of damage caused by an ischemia/reperfusion insult, with this latter issue having been translated more recently to the clinical setting. In addition, research has demonstrated that the other main metabolite of the oxidation of nitric oxide (i.e., nitrate) can also be sequentially reduced through processing in vivo to nitrite and then nitrite to nitric oxide to exert a range of beneficial effects-most notably lowering of blood pressure, a phenomenon that has also been confirmed recently to be an effective method for blood pressure lowering in patients with hypertension. This review will provide a detailed description of the pathways involved in the bioactivation of both nitrate and nitrite in vivo, their functional effects in preclinical models, and their mechanisms of action, as well as a discussion of translational exploration of this pathway in diverse disease states characterized by deficiencies in bioavailable nitric oxide. SIGNIFICANCE STATEMENT: The past 15 years has seen a major revision in our understanding of the pathways for nitric oxide synthesis in the body with the discovery of the noncanonical pathway for nitric oxide generation known as the nitrate-nitrite-nitric oxide pathway. This review describes the molecular components of this pathway, its role in physiology, potential therapeutics of targeting this pathway, and their impact in experimental models, as well as the clinical translation (past and future) and potential side effects.

Integrity signals

Registry

Crossref · 10.1124/pr.120.019240

Cites

766 of 766 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

We couldn’t retrieve this paper’s full text, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • The nitrate-nitrite-NO pathway offers an alternative, oxygen-independent mechanism for generating NO, which can partially restore vascular homeostasis under hypoxic or oxidative conditions.

    “the nitrate-nitrite-NO pathway offers an alternative, oxygen-independent mechanism for generating NO, which can partially restore vascular homeostasis under hypoxic or oxidative conditions [209,210].”
  • Highly processed nitrate-containing foods often undergo thermal treatment or prolonged storage, which diminishes phytochemical content and may reduce nitrate stability.

    “highly processed nitrate-containing foods often undergo thermal treatment or prolonged storage, which diminishes phytochemical content and may reduce nitrate stability [210,215,288].”

Cites

Flagged first, then by citations

8 of the 774 references couldn’t be matched to a known paper.

Cited by

Sorted by citations

Authors
Kapil, V., Khambata, R. S., Jones, D. A., Rathod, K., Primus, C., Massimo, G., Fukuto, J. M., & Ahluwalia, A.
Affiliations
Sonoma State University (US)
Venue
Pharmacological Reviews
Publisher
Elsevier BV
Published
2020-07
Volume
72
Issue
3
Pages
692-766
ISSN
0031-6997 (ISSN-L)
OpenAlex
W3037888613
Cited by
248
References
774
Citations by year
2026: 32 · 2025: 42 · 2024: 38 · 2023: 46 · 2022: 46 · 2021: 35 · 2020: 9
FWCI
4.33
Type
journal article
Language
en
Open access
Locations
  • Pharmacological Reviews (publishedVersion, cc-by-nc)
  • PubMed (publishedVersion)
  • Queen Mary Research Online (Queen Mary University of London) (submittedVersion, cc-by-nc)
Funders
  • Barts Charity (MRC0213, MGU0284, MRC0223)
  • British Heart Foundation (PG/19/4/33995)
Topics
  • Health Sciences › Medicine › Physiology › Nitric Oxide and Endothelin Effects
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Redox biology and oxidative stress
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biochemistry › Eicosanoids and Hypertension Pharmacology
Keywords
nitrate-nitrite-nitric oxide pathway, nitrite reductase, nitric oxide storage, vasodilation, blood pressure reduction, hypertension, ischemia-reperfusion injury, cytoprotection
MeSH terms
Animals, Blood Pressure, Humans, Nitrates, Nitric Oxide, Nitrites, Signal Transduction, Randomized Controlled Trials as Topic

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review