Cited by 54Sulfur Compounds in BiologyRedox biology and oxidative stressBiomedical and Chemical Research

Hydrogen sulfide as an oxygen sensor

Olson, Kenneth R.·2013·Clinical Chemistry and Laboratory Medicine

Abstract

The ability to monitor oxygen (O2) availability and delivery is crucial to an animal's survival. Vertebrates have a number of O2 'sensing' cells that monitor environmental oxygen and ensure adequate delivery to the tissues. While there is little doubt that these cells perform important homeostatic functions, there is little consensus on how a change in O2 concentration, or partial pressure (pO2), is transduced into a physiological response. We recently proposed that the metabolism of hydrogen sulfide (H2S) functions as the O2 sensor in a variety of tissues. In this mechanism, the concentration of biologically active H2S is regulated by the simple balance between constitutive H2S production and its oxidation by mitochondria. This hypothesis is supported by a number of experimental observations in a wide range of O2 sensing tissues: 1) exogenous H2S produces the same physiological response as hypoxia; 2) cellular H2S production is inversely related to pO2 at physiologically relevant pO2s; 3) agonists and antagonists of H2S biosynthesis augment and inhibit hypoxic responses, respectively; and 4) H2S and hypoxia appear to act via common effector pathways. The reciprocal relationship between H2S and O2 also has a long evolutionary history suggesting these gases have been inexorably intertwined throughout evolution. The intent of this review is to elaborate on the mechanism of H2S-mediated O2 sensing.

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Crossref · 10.1515/cclm-2012-0551

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Authors
Olson, K. R.
Affiliations
Indiana University South Bend (US)
Corresponding author
Olson, Kenneth R.
Venue
Clinical Chemistry and Laboratory Medicine
Published
2013-01-01
Volume
51
Issue
3
Pages
623-32
ISSN
  • 1434-6621 (ISSN-L)
  • 1437-4331
OpenAlex
W1964731257
Cited by
54
References
23
Citations by year
2026: 1 · 2024: 3 · 2023: 3 · 2022: 2 · 2021: 3 · 2020: 3 · 2019: 6 · 2017: 2 · 2016: 5 · 2015: 9 · 2014: 7 · 2013: 10
FWCI
0.69
Type
journal article
Language
en
Open access
closed
Locations
  • Clinical Chemistry and Laboratory Medicine (CCLM) (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biochemistry › Sulfur Compounds in Biology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Redox biology and oxidative stress
  • Health Sciences › Medicine › Surgery › Biomedical and Chemical Research
Keywords
hydrogen sulfide, oxygen sensing, hypoxia, oxygen partial pressure, H2S biosynthesis, oxygen homeostasis
MeSH terms
Animals, Hypoxia, Humans, Hydrogen Sulfide, Mitochondria, Muscle, Smooth, Vascular, Oxygen, Reactive Oxygen Species

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