Cited by 617Nitric Oxide and Endothelin EffectsCardiovascular Health and Disease PreventionHemoglobin structure and function

Nitrate and nitrite in biology, nutrition and therapeutics

Open access
Lundberg, Jon O, Gladwin, Mark T, Ahluwalia, Amrita, Benjamin, Nigel, Bryan, Nathan S, Butler, Anthony, Cabrales, Pedro, Fago, Angela +26 more·2009·Nature Chemical Biology

Abstract

Inorganic nitrate and nitrite from endogenous or dietary sources are metabolized in vivo to nitric oxide (NO) and other bioactive nitrogen oxides. The nitrate-nitrite-NO pathway is emerging as an important mediator of blood flow regulation, cell signaling, energetics and tissue responses to hypoxia. The latest advances in our understanding of the biochemistry, physiology and therapeutics of nitrate, nitrite and NO were discussed during a recent 2-day meeting at the Nobel Forum, Karolinska Institutet in Stockholm.

Integrity signals

Registry

Crossref · 10.1038/nchembio.260

Cites

44 of 44 references verified0 citation errors · 0 not checkable

Statistics

Nothing to recompute.

Claims the paper makes

15 of 47 cited sources checked · 13 supported · 0 flagged · accuracy not yet measured

  • Premisecitation

    The one-electron reduction of nitrite to NO can be catalyzed by many enzymatic and non-enzymatic pathways.

    “It is now clear that the one-electron reduction of nitrite to NO can be catalyzed by numerous enzymatic as well as non-enzymatic pathways1,4.”
    Quote in the paperSubstantial claim1 of 2 sources checked
    • cites [1] Lundberg, J.O., Weitzberg, E. & Gladwin, M.T. Nat. Rev. Drug Discov. 7, 156–167 (2008). source
    • cites [4] van Faassen, E.E. et al. Med. Res. Rev. 29, 683–741 (2009). source
  • Premisecitation

    Continuous swallowing of nitrite-containing saliva produces various nitrogen oxides, including NO, in the acidic environment of the gastric lumen.

    “The continuous swallowing of nitrite-containing saliva (~1.5 liters per day) generates a variety of nitrogen oxides, including NO, in the acidic milieu of the gastric lumen.”
    Quote in the paperNot a substantial claim1 of 2 sources checked
    • cites [29] Lundberg, J.O., Weitzberg, E., Lundberg, J.M. & Alving, K. Gut 35, 1543–1546 (1994). source

      The discussion under “Nitric Oxide Formation in Vitro” (page not provided) says that swallowed, nitrite-containing saliva can support continuous NO formation in the acidic stomach. It does not report production of a variety of nitrogen oxides, and gives daily saliva production as often exceeding one litre rather than approximately 1.5 litres. (LLM, conf=0.87)

      Experimental — accuracy not yet measured
    • cites [30] Benjamin, N. et al. Nature 368, 502 (1994). source
    • Rests on an assumption: The salivary glands actively remove a large fraction of ingested nitrate from the bloodstream and concentrate it in saliva.
  • Premisecitation

    The mitochondrion is a physiological target for NO.

    “In the last 15 years it has been established that the mitochondrion is a physiological target for NO (ref. 8).”
    Quote in the paperSubstantial claim1 of 1 sources checked
    • cites [8] Erusalimsky, J.D. & Moncada, S. Arterioscler. Thromb. Vasc. Biol. 27, 2524–2531 (2007). source
  • Premisecitation

    The body converts inorganic nitrate and nitrite, whether produced internally or consumed in the diet, into nitric oxide and other bioactive nitrogen oxides.

    “Inorganic nitrate and nitrite from endogenous or dietary sources are metabolized in vivo to nitric oxide (NO) and other bioactive nitrogen oxides.”
    Quote in the paperSubstantial claim1 of 5 sources checked
    • cites [1] Lundberg, J.O., Weitzberg, E. & Gladwin, M.T. Nat. Rev. Drug Discov. 7, 156–167 (2008). source
    • cites [2] Gladwin, M.T. et al. Nat. Chem. Biol. 1, 308–314 (2005). source
    • cites [3] Reutov, V.P. & Sorokina, E.G. Biochemistry (Mosc.) 63, 874–884 (1998).

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

    • cites [4] van Faassen, E.E. et al. Med. Res. Rev. 29, 683–741 (2009). source
    • cites [5] Weitzberg, E. & Lundberg, J.O. Nitric Oxide 2, 1–7 (1998). source
  • Premisecitation

    Nitrite therapy can prevent hypertension caused by cell-free hemoglobin-based oxygen carriers in vivo.

    “Nitrite reduction to NO by deoxygenated hemoglobin may govern NO signaling in the vasculature as exemplified by experiments showing that nitrite therapy can prevent hypertension induced by cell-free hemoglobin-based oxygen carriers in vivo22.”
    Quote in the paperSubstantial claim1 of 1 sources checked
    • cites [22] Rodriguez, C. et al. Biochem. J. 422, 423–432 (2009). source
  • May combine two claims. 12
  • Not yet classified. 1
  • May combine two claims.

    Premisecitation

    Nitrate and nitrite are metabolized in blood and tissues to produce NO and other bioactive nitrogen oxides, providing an alternative to the classical L-arginine-NOS-NO signaling pathway.

    “However, a new view is evolving with the accumulating evidence that nitrate and nitrite metabolism occurs in blood and tissues to form NO and other bioactive nitrogen oxides, representing an alternative to ‘classical’ L-arginine–NO synthase–NO signaling1–5.”
    Quote in the paperSubstantial claim1 of 5 sources checked
    • cites [1] Lundberg, J.O., Weitzberg, E. & Gladwin, M.T. Nat. Rev. Drug Discov. 7, 156–167 (2008). source
    • cites [2] Gladwin, M.T. et al. Nat. Chem. Biol. 1, 308–314 (2005). source
    • cites [3] Reutov, V.P. & Sorokina, E.G. Biochemistry (Mosc.) 63, 874–884 (1998).

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

    • cites [4] van Faassen, E.E. et al. Med. Res. Rev. 29, 683–741 (2009). source
    • cites [5] Weitzberg, E. & Lundberg, J.O. Nitric Oxide 2, 1–7 (1998). source
  • Not yet classified.

    Premise

    Many of nitrite's biological effects involve interactions with mitochondria.

    “Recent data suggest that many of the biological effects of nitrite6,7 involve interaction with mitochondria.”
    Quote in the paperNot yet classified1 of 2 sources checked
    • cites [6] Shiva, S. et al. J. Exp. Med. 204, 2089–2102 (2007). source
    • cites [7] Larsen, F.J., Weitzberg, E., Lundberg, J.O. & Ekblom, B. Acta Physiol. (Oxf.) 191, 59–66 (2007). source
  • May combine two claims.

    Premisecitation

    Salivary nitrite increases gastric mucosal blood flow and mucus production, which supports gastroprotective mechanisms.

    “Salivary nitrite increases gastric mucosal blood flow and mucus production, thereby supporting gastroprotective mechanisms35.”
    Quote in the paperNot a substantial claim1 of 1 sources checked
    • cites [35] Bjorne, H.H. et al. J. Clin. Invest. 113, 106–114 (2004). source
  • May combine two claims.

    Premisecitation

    In healthy volunteers, beetroot juice as a nitrate source reduces blood pressure by about 10 mm Hg, coinciding with peak plasma nitrite levels.

    “Andrew Webb (Barts and The London Medical School) and colleagues used beetroot juice as a source of nitrate in healthy volunteers and found a reduction in blood pressure of ~10 mm Hg that coincided with peak plasma levels of nitrite37.”
    Quote in the paperSubstantial claim1 of 1 sources checked
    • cites [37] Webb, A.J. et al. Hypertension 51, 784–790 (2008). source
  • May combine two claims.

    Interpretationreasoning

    Nitrate and nitrite act as storage pools that support NO signaling during metabolic stress, and their activation involves both enzymatic and non-enzymatic reactions in blood and tissues.

    “Nitrate and nitrite can thus be viewed as storage pools supporting NO signaling during metabolic stress, with their bioactivation involving both enzymatic and non-enzymatic reactions in blood and tissues.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Premisecitation

    Salivary nitrate is efficiently reduced to nitrite by oral bacteria, resulting in nitrite concentrations in saliva that are 1,000-fold higher than in plasma.

    “Salivary nitrate is then efficiently reduced to nitrite by bacteria in the oral cavity, leading to 1,000-fold higher concentrations of nitrite in saliva compared to plasma28.”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [28] Lundberg, J.O., Weitzberg, E., Cole, J.A. & Benjamin, N. Nat. Rev. Microbiol. 2, 593–602 (2004). source
    • Rests on an assumption: The salivary glands actively remove a large fraction of ingested nitrate from the bloodstream and concentrate it in saliva.
  • May combine two claims.

    Premisecitation

    Nitrite administration causes vasodilatation at low concentrations, ultimately through activation of cGMP in vascular smooth muscle.

    “Nitrite administration causes vasodilatation at low concentrations14, and this is ultimately mediated by activation of cGMP in the vascular smooth muscle.”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [14] Cosby, K. et al. Nat. Med. 9, 1498–1505 (2003). source
  • May combine two claims.

    Premisecitation

    In healthy volunteers given a dietary nitrate load as beetroot juice, oxygen consumption was reduced, with a corresponding improvement in performance.

    “Andy Jones (University of Exeter) presented data demonstrating that in healthy volunteers given a dietary nitrate load (in the form of beetroot juice), oxygen consumption was reduced, resulting in a concomitant improvement of performance41.”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [41] Bailey, S.J. et al. J. Appl. Physiol. 107, 1144–1155 (2009). source
  • May combine two claims.

    Premisecitation

    Very low doses of dietary nitrite reduced proteinuria and prevented renal histological damage caused by chronic administration of a NOS inhibitor.

    “Koichiro Tsuchiya (University of Tokushima) presented data showing that very low doses of dietary nitrite attenuated proteinurea and prevented the renal histological damage induced by chronic administration of a NOS inhibitor42.”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [42] Kanematsu, Y. et al. Am. J. Physiol. Renal Physiol. 295, F1457–F1462 (2008). source
  • May combine two claims.

    Premisecitation

    Dietary nitrate supplementation reduces oxygen cost and improves muscular efficiency at various levels of submaximal exercise in healthy young volunteers without increasing anaerobic metabolism.

    “Recently it was demonstrated that dietary nitrate supplementation reduces oxygen cost and improves muscular efficiency at various levels of submaximal exercise in healthy young volunteers without increasing anaerobic metabolism7.”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [7] Larsen, F.J., Weitzberg, E., Lundberg, J.O. & Ekblom, B. Acta Physiol. (Oxf.) 191, 59–66 (2007). source
  • May combine two claims.

    Interpretationreasoning

    The blood-pressure effects of nitrate can be prevented by having human volunteers spit for 3 hours or by giving rats an antibacterial mouthwash, demonstrating the importance of the enterosalivary circulation and oral nitrate-reducing bacteria for nitrate bioactivation.

    “Both groups could prevent the effects on blood pressure either by letting the human volunteers spit for 3 h or by application of an antibacterial mouthwash to the rats. This shows the importance of the enterosalivary circulation of nitrate and the critical role of oral nitrate-reducing bacteria in its bioactivation.”
    Quote in the paperSubstantial claim
    • Rests on an assumption: The salivary glands actively remove a large fraction of ingested nitrate from the bloodstream and concentrate it in saliva.
  • May combine two claims.

    Interpretationreasoning

    Nitrite bioactivation is enhanced in anatomical regions undergoing ischemia or hypoxia, which may lead to more localized therapeutic effects.

    “In contrast, nitrite bioactivation is promoted in anatomic regions undergoing ischemia/hypoxia, leading to potentially more localized therapeutic effects.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Premisecitation

    Nitrite protects against ischemia-reperfusion injury in the heart, brain, kidney, and liver, as well as in chronic limb ischemia.

    “In recent years data have accumulated showing that nitrite protects against IR injury in the heart, brain, kidney and liver, as well as in chronic limb ischemia (for review see refs. 1,2).”
    Quote in the paperSubstantial claim0 of 2 sources checked
    • cites [1] Lundberg, J.O., Weitzberg, E. & Gladwin, M.T. Nat. Rev. Drug Discov. 7, 156–167 (2008). source
    • cites [2] Gladwin, M.T. et al. Nat. Chem. Biol. 1, 308–314 (2005). source
13 of 13
  • The paper relies on this without support.

    The salivary glands actively remove a large fraction of ingested nitrate from the bloodstream and concentrate it in saliva.

    “A substantial amount of ingested nitrate is actively taken up from the circulation by the salivary glands and concentrated in saliva.”
1 of 1

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?

  • While dietary nitrate can increase NO production, a high oxidative burden may reduce its effectiveness by accelerating NO degradation.

    “While dietary nitrate can increase NO production, a high oxidative burden may reduce its effectiveness by accelerating NO degradation [128,234,256].”

    From Dietary Nitrate-Rich Vegetables as Natural Modulators of Health: Mechanisms and Benefits in Ageing Populations (2026) · cites this paper as [128]

    The 'Dietary nitrate in health and disease' section says ingested nitrate is converted to nitrite and generates nitrogen oxides, including NO. The 'Nitrate, nitrite and energetics' section mentions enhanced oxidative stress in mountaineers, but does not say that oxidative burden accelerates NO degradation or reduces the effectiveness of dietary nitrate. Page numbers are unavailable in our copy. (LLM, conf=0.86)

    Experimental — accuracy not yet measured
  • Altered RBC structure and signalling may restrict the export of NO to vascular tissues, thereby reducing vasodilatory responses despite adequate nitrite levels.

    “Altered RBC structure and signalling may also restrict the export of NO to vascular tissues, thereby reducing vasodilatory responses despite adequate nitrite levels [56,128,263].”

    From Dietary Nitrate-Rich Vegetables as Natural Modulators of Health: Mechanisms and Benefits in Ageing Populations (2026) · cites this paper as [128]

    The section “Nitrite reduction in the vasculature” says that RBCs export NO-like bioactivity involved in blood-flow control and that how NO formed in an RBC is exported to elicit vasodilatation remains controversial (page not available). It does not say that altered RBC structure or signalling restricts that export, or that vasodilatory responses fall despite adequate nitrite levels. (LLM, conf=0.85)

    Experimental — accuracy not yet measured
  • Hemoglobin, myoglobin, neuroglobin, xanthine oxidoreductase, aldehyde oxidase, carbonic anhydrase, eNOS, and mitochondrial enzymes have all been identified as having a role in nitrite bioactivation.

    “Hemoglobin, myoglobin, neuroglobin, xanthine oxidoreductase, aldehyde oxidase, carbonic anhydrase, eNOS, and mitochondrial enzymes have all been identified with having a role in nitrite bioactivation (fig.1).14,15”

    From Nitrate-Nitrite-Nitric Oxide Pathway: Implications for Anesthesiology and Intensive Care (2010) · cites this paper as [15]

    The biochemistry and bioactivation of nitrite and Nitrite reduction in the vasculature sections describe nitrite-reducing roles for hemoglobin, myoglobin, neuroglobin, eNOS, and xanthine oxidoreductase. Nitric oxide, nitrite and mitochondria also reports that respiratory-chain components can reduce nitrite to NO. Our copy does not identify aldehyde oxidase or carbonic anhydrase as nitrite-bioactivating enzymes; its reference to anhydrase activity concerns hemoglobin, not carbonic anhydrase. (LLM, conf=0.88)

    Experimental — accuracy not yet measured
  • One serving of a nitrate-rich vegetable contains more nitrate than is endogenously formed by all three NOS isoforms combined during a day.

    “One serving of such a vegetable contains more nitrate than what is endogenously formed by the all three NOS isoforms combined during a day.15”
  • The nitrate-nitrite-nitric oxide pathway may serve as a backup system to ensure nitric oxide generation during ischemic/hypoxic conditions when oxygen-dependent NOSs may be malfunctioning.

    “may serve as a backup system to ensure nitric oxide generation during ischemic/hypoxic conditions when the oxygen-dependent NOSs may be malfunctioning.14,15”

Cites

Flagged first, then by citations

1 of the 45 references couldn’t be matched to a known paper.

Research works printed but not linked: 2

  1. Reutov, V.P. & Sorokina, E.G. Biochemistry (Mosc.) 63, 874–884 (1998).
  2. Alexander, J. et al. EFSA J. 689, 1–79 (2008).

Cited by

Sorted by citations

Authors
Lundberg, J. O., Gladwin, M. T., Ahluwalia, A., Benjamin, N., Bryan, N. S., Butler, A., Cabrales, P., Fago, A., Feelisch, M., Ford, P. C., Freeman, B. A., Frenneaux, M., Friedman, J., Kelm, M., Kevil, C. G., Kim-Shapiro, D. B., Kozlov, A. V., Lancaster, J. R., Lefer, D. J., McColl, K., McCurry, K., Patel, R. P., Petersson, J., Rassaf, T., Reutov, V. P., Richter-Addo, G. B., Schechter, A., Shiva, S., Tsuchiya, K., van Faassen, E. E., Webb, A. J., Zuckerbraun, B. S., Zweier, J. L., & Weitzberg, E.
Affiliations
  • Karolinska Institutet (SE)
  • University of Pittsburgh (US)
  • Queen Mary University of London (GB)
  • University of Exeter (GB)
  • Brown Foundation Institute of Molecular Medicine for the Prevention of Human Diseases (US)
  • University of St Andrews (GB)
  • University of California San Diego (US)
  • Aarhus University (DK)
  • University of Warwick (GB)
  • University of California, Santa Barbara (US)
  • University of Birmingham (GB)
  • Albert Einstein College of Medicine (US)
  • Heinrich Heine University Düsseldorf (DE)
  • Louisiana State University in Shreveport (US)
  • Ludwig Boltzmann Institute for Traumatology, The Research Center in Cooperation with AUVA (AT)
  • University of Alabama at Birmingham (US)
  • Emory University (US)
  • University of Glasgow (GB)
  • Cleveland Clinic (US)
  • Uppsala University (SE)
  • Russian Academy of Sciences (RU)
  • University of Oklahoma (US)
  • National Institutes of Health (US)
  • Tokushima University (JP)
  • The Ohio State University (US)
Corresponding author
  • Lundberg, Jon O
  • Weitzberg, Eddie
Venue
Nature Chemical Biology
Published
2009-12
Volume
5
Issue
12
Pages
865-869
ISSN
  • 1552-4450 (ISSN-L)
  • 1552-4469
OpenAlex
W2128632568
Cited by
617
References
45
Citations by year
2026: 23 · 2025: 19 · 2024: 22 · 2023: 33 · 2022: 36 · 2021: 43 · 2020: 36 · 2019: 29 · 2018: 45 · 2017: 39 · 2016: 41 · 2015: 60 · 2014: 45 · 2013: 40 · 2012: 50
FWCI
23.20
Type
journal article
Language
en
Open access
Locations
  • Nature Chemical Biology (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • Utrecht University Repository (Utrecht University) (submittedVersion)
  • ENLIGHTEN (Jurnal Bimbingan dan Konseling Islam) (submittedVersion)
  • ePrints Soton (University of Southampton) (submittedVersion)
  • Research Portal (King's College London) (submittedVersion)
  • University of Birmingham Research Portal (University of Birmingham) (submittedVersion)
  • UEA Digital Repository (University of East Anglia) (submittedVersion)
Funders
  • Ikaria
  • University of Pittsburgh
  • Hemophilia Center of Western Pennsylvania
  • British Heart Foundation (SP/08/006/25110)
  • European Commission
  • Karolinska Institutet
  • National Heart, Lung, and Blood Institute (R01HL064937, R37HL058091, R01HL058115, R01HL080482)
Topics
  • Health Sciences › Medicine › Physiology › Nitric Oxide and Endothelin Effects
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiovascular Health and Disease Prevention
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Hemoglobin structure and function
Keywords
nitrate, nitrite, nitric oxide, nitrate-nitrite-nitric oxide pathway, blood flow regulation, signal transduction, hypoxia, energy metabolism, dietary nitrate, therapeutics
MeSH terms
Animals, Diet, Energy Metabolism, Humans, Mitochondria, Nitrates, Nitric Oxide, Nitrites, Signal Transduction

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