Cited by 418Hemoglobin structure and functionCardiac Ischemia and ReperfusionNitric Oxide and Endothelin Effects

Nitrite reductase activity of myoglobin regulates respiration and cellular viability in myocardial ischemia-reperfusion injury

Open access
Hendgen-Cotta, Ulrike B., Merx, Marc W., Shiva, Sruti, Schmitz, Joel, Becher, Stefanie, Klare, Johann P., Steinhoff, Heinz-Jürgen, Goedecke, Axel +4 more·2008·Proceedings of the National Academy of Sciences

Abstract

The nitrite anion is reduced to nitric oxide (NO*) as oxygen tension decreases. Whereas this pathway modulates hypoxic NO* signaling and mitochondrial respiration and limits myocardial infarction in mammalian species, the pathways to nitrite bioactivation remain uncertain. Studies suggest that hemoglobin and myoglobin may subserve a fundamental physiological function as hypoxia dependent nitrite reductases. Using myoglobin wild-type ((+/+)) and knockout ((-/-)) mice, we here test the central role of myoglobin as a functional nitrite reductase that regulates hypoxic NO* generation, controls cellular respiration, and therefore confirms a cytoprotective response to cardiac ischemia-reperfusion (I/R) injury. We find that myoglobin is responsible for nitrite-dependent NO* generation and cardiomyocyte protein iron-nitrosylation. Nitrite reduction to NO* by myoglobin dynamically inhibits cellular respiration and limits reactive oxygen species generation and mitochondrial enzyme oxidative inactivation after I/R injury. In isolated myoglobin(+/+) but not in myoglobin(-/-) hearts, nitrite treatment resulted in an improved recovery of postischemic left ventricular developed pressure of 29%. In vivo administration of nitrite reduced myocardial infarction by 61% in myoglobin(+/+) mice, whereas in myoglobin(-/-) mice nitrite had no protective effects. These data support an emerging paradigm that myoglobin and the heme globin family subserve a critical function as an intrinsic nitrite reductase that regulates responses to cellular hypoxia and reoxygenation [corrected]

Integrity signals

Registry

Crossref · 10.1073/pnas.0801336105

Cites

41 of 41 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?

  • Factors demonstrated to reduce nitrite in tissues include deoxyhemoglobin, deoxymyoglobin, xanthine oxidoreductase, heme-based enzymes in mitochondria, and acidosis during ischemia.

    “There are a number of factors that have been demonstrated to reduce nitrite in the tissues, including deoxyhemoglobin, deoxymyoglobin, xanthine oxidoreductase, heme-based enzymes in the mitochondria and acidosis during ischemia [99,100].”

    From NO-Rich Diet for Lifestyle-Related Diseases (2015) · cites this paper as [100]

  • A cytoprotective role of nitrite in myocardial, liver, kidney, and brain ischemia/reperfusion injury has previously been demonstrated.

    “A cytoprotective role of nitrite in the setting of myocardial, liver, kidney, and brain ischemia/reperfusion injury has previously been demonstrated.19,29,30”
  • Mb-mediated nitrite reduction has been reported to be important in both cardiomyocytes and smooth muscle.

    “Mb-mediated nitrite reduction has been reported to be important in both cardiomyocytes [55] and smooth muscle [56].”

    From Mechanisms of nitrite bioactivation (2014) · cites this paper as [55]

  • A functional role for myoglobin in nitrite reduction and signaling is strongly supported by multiple studies in myoglobin knockout mice showing a reduction in nitrite mediated effects on mitochondrial respiration, cardiac function, ischemia reperfusion cytoprotection, and systemic hypoxic vasodilation.

    “As discussed below, a functional role for myoglobin in nitrite reduction and signaling is strongly supported by multiple studies in myoglobin knockout mice showing a reduction in nitrite mediated effects on mitochondrial respiration, cardiac function, ischemia reperfusion cytoprotection, and systemic hypoxic vasodilation [54–56].”

    From Mechanisms of nitrite bioactivation (2014) · cites this paper as [55]

  • Low concentrations of nitrite mediate cytoprotection in a variety of tissues in animal models including heart, liver, brain, kidney, hindlimb, and human forearm.

    “The efficacy of low concentrations of nitrite in mediating cytoprotection has been demonstrated in a variety of tissues in animal models including heart [8, 9, 55, 118–122] liver [9, 120, 123], brain [124–126], kidney [127, 128], hindlimb [129], and human forearm [23].”

    From Mechanisms of nitrite bioactivation (2014) · cites this paper as [55]

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Hendgen-Cotta, U. B., Merx, M. W., Shiva, S., Schmitz, J., Becher, S., Klare, J. P., Steinhoff, H.-J., Goedecke, A., Schrader, J., Gladwin, M. T., Kelm, M., & Rassaf, T.
Affiliations
  • Universitätsklinikum Aachen (DE)
  • National Institutes of Health (US)
  • Osnabrück University (DE)
  • Heinrich Heine University Düsseldorf (DE)
Venue
Proceedings of the National Academy of Sciences
Published
2008-07-22
Volume
105
Issue
29
Pages
10256-10261
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2096118264
Cited by
418
References
41
Citations by year
2026: 9 · 2025: 14 · 2024: 14 · 2023: 12 · 2022: 13 · 2021: 14 · 2020: 12 · 2019: 23 · 2018: 15 · 2017: 23 · 2016: 27 · 2015: 36 · 2014: 30 · 2013: 35 · 2012: 46
FWCI
13.58
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • RWTH Publications (RWTH Aachen) (submittedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Hemoglobin structure and function
  • Health Sciences › Medicine › Pathology and Forensic Medicine › Cardiac Ischemia and Reperfusion
  • Health Sciences › Medicine › Physiology › Nitric Oxide and Endothelin Effects
Keywords
myoglobin, nitrite reductase, nitric oxide, myocardial ischemia-reperfusion injury, hypoxia, cellular respiration, reactive oxygen species, cardioprotection, myocardial infarction, nitrite
MeSH terms
Aconitate Hydratase, Animals, Cell Survival, Heme, Male, Mitochondria, Heart, Myocardial Infarction, Myocardium, Myoglobin, Nitric Oxide, Nitrites, Oxidation-Reduction, Myocardial Reperfusion Injury, Reactive Oxygen Species, Mice, Knockout, Ventricular Dysfunction, Left, Cell Respiration, Nitrate Reductase, Mice, In Vitro Techniques

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