Cited by 186Hemoglobin structure and functionBlood properties and coagulationErythrocyte Function and Pathophysiology

The red blood cell as an oxygen sensor: what is the evidence?

Ellsworth, M.L.·2000·Acta Physiologica Scandinavica

Abstract

The matching of oxygen supply with demand requires the existence of a mechanism within the tissue capable of both sensing tissue oxygen need and inducing alterations in vascular perfusion necessary to meet that need. Historically, localized sites within the tissue and the vessels themselves have been investigated with the sensor site failing to be determined. Within the last decade, studies have focused on the red blood cell, the efficient carrier of oxygen, as a possible candidate. The red blood cell is clearly capable of sensing oxygen levels, as its extent of haemoglobin desaturation (decrease in oxygen content) is intimately tied with tissue oxygen demand. In addition, numerous studies have indicated that the red blood cell is capable of releasing increased amounts of adenosine 5′‐triphosphate (ATP) as oxygen content falls and its haemoglobin becomes desaturated. Within the vasculature, intraluminal ATP has been shown to induce a vasodilator response which is conducted along the vessels resulting in augmentation of tissue perfusion. While details of the red blood cell’s role are still under investigation, evidence presented here supports the intriguing idea that the mobile red blood cell may itself be able to augment blood flow and oxygen delivery wherever and whenever the need might arise. Such a mechanism eliminates the requirement for a diverse network of sensing sites throughout the vasculature and should provide a more efficient means of appropriately matching oxygen supply with demand.

Integrity signals

Registry

Crossref · 10.1046/j.1365-201x.2000.00708.x

Cites

32 of 32 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?

  • There is consensus that NO-erythrocytic interactions regulate vascular function, particularly that oxygen desaturation of red blood cell Hb stimulates increased vascular NO bioavailability, leading to NO-dependent hypoxic vasodilation.

    “There is consensus in the field that NO-erythrocytic interactions regulate vascular function, particularly that oxygen desaturation of red blood cell Hb stimulates increased vascular NO bioavailability, leading to NO-dependent hypoxic vasodilation (266).”

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Ellsworth, M. L.
Affiliations
Saint Louis University (US)
Corresponding author
Ellsworth, M.L.
Venue
Acta Physiologica Scandinavica
Publisher
Wiley
Published
2000-04
Volume
168
Issue
4
Pages
551-559
ISSN
  • 0001-6772 (ISSN-L)
  • 1365-201X
OpenAlex
W1984179683
Cited by
186
References
32
Citations by year
2026: 4 · 2024: 4 · 2023: 4 · 2022: 6 · 2021: 3 · 2020: 8 · 2019: 2 · 2018: 6 · 2017: 9 · 2016: 4 · 2015: 5 · 2014: 8 · 2013: 13 · 2012: 12
FWCI
1.42
Type
journal article
Language
en
Open access
closed
Locations
  • Acta Physiologica Scandinavica (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (5k04hl002602-03)
  • National Heart, Lung, and Blood Institute (R01HL056249, HL56249, HL 39226, HL-02602)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Hemoglobin structure and function
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Blood properties and coagulation
  • Health Sciences › Medicine › Physiology › Erythrocyte Function and Pathophysiology
Keywords
tissue oxygen demand, ATP release, vasodilation, tissue perfusion, oxygen delivery
MeSH terms
Adenosine Triphosphate, Animals, Erythrocytes, Humans, Oxygen, Oxygen Consumption, Regional Blood Flow, Muscle, Skeletal

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