Cited by 491Nitric Oxide and Endothelin EffectsGout, Hyperuricemia, Uric AcidBiochemical and Molecular Research

Xanthine oxidoreductase catalyses the reduction of nitrates and nitrite to nitric oxide under hypoxic conditions

Millar, Timothy M, Stevens, Cliff R, Benjamin, Nigel, Eisenthal, Robert, Harrison, Roger, Blake, David R·1998·FEBS Letters

Abstract

Xanthine oxidoreductase (XOR) catalyses the reduction of the therapeutic organic nitrate, nitroglycerin (glyceryl trinitrate, GTN), as well as inorganic nitrate and nitrite, to nitric oxide (NO) under hypoxic conditions in the presence of NADH. Generation of nitric oxide is not detectable under normoxic conditions and is inhibited by the molybdenum site-specific inhibitors, oxypurinol and (-)BOF 4272. These enzymic reactions provide a mechanism for generation of NO under hypoxic conditions where nitric oxide synthase does not function, suggesting a vasodilatory role in ischaemia.

Integrity signals

Registry

Crossref · 10.1016/s0014-5793(98)00430-x

Cites

34 of 34 references verified0 citation errors · 0 not checkable

Statistics

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

Claims the paper makes

This paper’s full text isn’t openly available, 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?

  • Xanthine oxidoreductase reduces inorganic nitrate and nitrite under low oxygen tension as occurs in ischemia.

    “In addition to its role in purine catabolism and in reduction of molecular oxygen to superoxide, xanthine oxidoreductase (XOR) has been identified to reduce inorganic nitrate and nitrite under low oxygen tension as it occurs in ischemia.84 -86”
  • Animals do not encode a classical nitrate reductase, although bovine xanthine oxidase can reduce nitrate into nitrite.

    “Eukaryotic nitrate reductase (eukNR) has been isolated from plants and fungi; animals do not encode a classical nitrate reductase, although bovine xanthine oxidase (XO) can reduce nitrate into nitrite.”

    From Nitrate and periplasmic nitrate reductases (2014) · cites this paper as [78]

  • Xanthine oxidoreductase can mediate the one-electron reduction of nitrite to NO under anoxic conditions.

    “Despite early studies by Zhang et al [21, 22] and Millar et al [23] demonstrating that xanthine oxidoreductse can mediate the one-electron reduction of nitrite to NO under anoxic conditions”
  • Xanthine or hypoxanthine was found to inhibit XO-catalyzed nitrite reduction.

    “Moreover, xanthine or hypoxanthine was found to inhibit this reaction [101].”
  • Xanthine oxidase may catalytically reduce nitrite back to NO under several circumstances.

    “However, XO may also catalytically reduce nitrite back to NO under several circumstances [90, 100, 101].”

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Millar, T. M., Stevens, C. R., Benjamin, N., Eisenthal, R., Harrison, R., & Blake, D. R.
Affiliations
  • University of Bath (GB)
  • St Bartholomew's Hospital (GB)
Corresponding author
Stevens, Cliff R
Venue
FEBS Letters
Publisher
Wiley
Published
1998-05-08
Volume
427
Issue
2
Pages
225-228
ISSN
  • 0014-5793 (ISSN-L)
  • 1873-3468
OpenAlex
W1997469875
Cited by
491
References
34
Citations by year
2026: 5 · 2025: 9 · 2024: 17 · 2023: 13 · 2022: 7 · 2021: 22 · 2020: 16 · 2019: 20 · 2018: 17 · 2017: 14 · 2016: 17 · 2015: 19 · 2014: 16 · 2013: 27 · 2012: 22
FWCI
4.92
Type
journal article
Language
en
Open access
closed
Locations
  • FEBS Letters (publishedVersion)
  • PubMed (publishedVersion)
  • ePrints Soton (University of Southampton) (submittedVersion)
Funders
University of Warwick
Topics
  • Health Sciences › Medicine › Physiology › Nitric Oxide and Endothelin Effects
  • Health Sciences › Medicine › Nephrology › Gout, Hyperuricemia, Uric Acid
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Biochemical and Molecular Research
Keywords
xanthine oxidoreductase, nitric oxide production, nitrate reduction, nitrite reduction, hypoxia, oxypurinol, NADH, nitroglycerin, ischemia, vasodilation
MeSH terms
Animals, Cattle, Enzyme Inhibitors, Nitroglycerin, Kinetics, NAD, Nitrates, Nitric Oxide, Oxygen, Oxypurinol, Sodium Nitrite, Triazines, Xanthine Oxidase

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