Cited by 97Nitric Oxide and Endothelin EffectsCardiac Ischemia and ReperfusionAntioxidant Activity and Oxidative Stress

Dietary nitrate and nitrite modulate blood and organ nitrite and the cellular ischemic stress response

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Raat, Nicolaas J.H., Noguchi, Audrey C., Liu, Virginia B., Raghavachari, Nalini, Liu, Delong, Xu, Xiuli, Shiva, Sruti, Munson, Peter J. +1 more·2009·Free Radical Biology and Medicine

Abstract

Dietary nitrate, found in abundance in green vegetables, can be converted to the cytoprotective molecule nitrite by oral bacteria, suggesting that nitrate and nitrite may represent active cardioprotective constituents of the Mediterranean diet. We therefore tested the hypothesis that dietary nitrate and nitrite levels modulate tissue damage and ischemic gene expression in a mouse liver ischemia-reperfusion model. We found that stomach content, plasma, heart, and liver nitrite levels were significantly reduced after dietary nitrate and nitrite depletion and could be restored to normal levels with nitrite supplementation in water. Remarkably, we confirmed that basal nitrite levels significantly reduced liver injury after ischemia-reperfusion. Consistent with an effect of nitrite on the posttranslational modification of complex I of the mitochondrial electron transport chain, the severity of liver infarction was inversely proportional to complex I activity after nitrite repletion in the diet. The transcriptional response of dietary nitrite after ischemia was more robust than after normoxia, suggesting a hypoxic potentiation of nitrite-dependent transcriptional signaling. Our studies indicate that normal dietary nitrate and nitrite levels modulate ischemic stress responses and hypoxic gene expression programs, supporting the hypothesis that dietary nitrate and nitrite are cytoprotective components of the diet.

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Crossref · 10.1016/j.freeradbiomed.2009.05.015

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  • Webb et al. showed conversion of nitrite to nitric oxide that was dependent on XOR.

    “They could show conversion of nitrite to nitric oxide, which was dependent on XOR.”

    From Nitrate-Nitrite-Nitric Oxide Pathway: Implications for Anesthesiology and Intensive Care (2010) · cites this paper as [139]

    The Introduction (page unavailable) describes xanthine oxidoreductase as one enzyme that activates nitrite to produce nitric oxide. The References list a Webb-led study on nitrite reduction during ischemia, but our copy does not say that Webb and colleagues showed the conversion was dependent on XOR. (LLM, conf=0.82)

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  • In 2004, Webb et al. reported protective effects of nitrite in isolated perfused heart preparations subjected to I/R injury.

    “In 2004, Webb et al. reported protective effects of nitrite in isolated perfused heart preparations subjected to I/R injury.139”

    From Nitrate-Nitrite-Nitric Oxide Pathway: Implications for Anesthesiology and Intensive Care (2010) · cites this paper as [139]

    The Introduction reports that nitrite limits injury in animal models of heart ischemia-reperfusion, and reference 7 identifies a 2004 Webb et al. paper on protection against myocardial ischemia-reperfusion damage. Neither passage says the work used isolated perfused heart preparations; that specific detail is unsupported by our copy. (LLM, conf=0.85)

    Experimental — accuracy not yet measured
  • Animal models chronically fed a nitrate/nitrite-deficient diet exhibit diminished plasma and tissue nitrate/nitrite and increased ischemia-reperfusion injuries in heart and liver compared with normal-diet animals.

    “animal models chronically fed a diet deficient in nitrate/nitrite exhibit significantly diminished plasma and tissue levels of nitrate/nitrite, resulting in increased ischemia-reperfusion injuries in heart and liver compared with the animal models fed a normal diet [29,30].”

    From NO-Rich Diet for Lifestyle-Related Diseases (2015) · cites this paper as [30]

  • Vascular NO availability is expected to be impaired due to reduced NOS activity in ischemia and subsequent consumption by superoxide during reperfusion, resulting in severe ischemia/reperfusion injury.

    “The availability of vascular NO would thus be expected to be impaired due to the reduced NOS activity in ischemia and subsequent consumption by superoxide during reperfusion [95], resulting in severe ischemia/reperfusion injury [30].”

    From NO-Rich Diet for Lifestyle-Related Diseases (2015) · cites this paper as [30]

  • Nitrate-rich diets increase plasma and tissue levels of nitrite, but this cannot be accounted solely by nitrate reduction from oral bacteria.

    “Recent and past data have demonstrated that nitrate-rich diets increase plasma and tissue levels of nitrite [9,10], but this cannot be accounted solely by nitrate reduction from oral bacteria and other mechanisms have been implicated and are under investigation [11].”

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Research works printed but not linked: 1

  1. [31]Munson PJA A consistency test for determining the significance of gene expression changes on replicate samples and two convenient variance-stabilizing transformations GeneLogic Workshop of Low Level Analysis of Affymetrix GeneChip Data Bethesda, MD Link: http://stat-www.berkeley.edu/users/terry/zarray/Affy/GL_Workshop/genelogic2001.html

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Authors
Raat, N. J. H., Noguchi, A. C., Liu, V. B., Raghavachari, N., Liu, D., Xu, X., Shiva, S., Munson, P. J., & Gladwin, M. T.
Affiliations
National Institutes of Health (US)
Corresponding author
Gladwin, Mark T.
Venue
Free Radical Biology and Medicine
Publisher
Elsevier BV
Published
2009-09
Volume
47
Issue
5
Pages
510-517
ISSN
0891-5849 (ISSN-L)
OpenAlex
W2046285486
Cited by
97
References
40
Citations by year
2025: 3 · 2024: 2 · 2023: 2 · 2022: 3 · 2021: 6 · 2020: 4 · 2019: 2 · 2018: 5 · 2017: 3 · 2016: 3 · 2015: 12 · 2014: 10 · 2013: 16 · 2012: 3
FWCI
5.52
Type
journal article
Language
en
Open access
Locations
  • Free Radical Biology and Medicine (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health (NIH0010039742)
  • U.S. Public Health Service (NIH0010039742)
Topics
  • Health Sciences › Medicine › Physiology › Nitric Oxide and Endothelin Effects
  • Health Sciences › Medicine › Pathology and Forensic Medicine › Cardiac Ischemia and Reperfusion
  • Health Sciences › Medicine › Biochemistry › Antioxidant Activity and Oxidative Stress
Keywords
dietary nitrate, dietary nitrite, nitrite supplementation, hepatic ischemia-reperfusion injury, hypoxia, mitochondrial complex I, cytoprotection, gut microbiota, Mediterranean diet
MeSH terms
Animals, Animal Structures, Diet, Gastric Mucosa, Heart, Ischemia, Liver, Mice, Inbred C57BL, Myocardium, Nitrates, Nitrites, Reperfusion Injury, Cytoprotection, Oligonucleotide Array Sequence Analysis, Gene Expression Profiling, Mice

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