Cited by 165Hemoglobin structure and functionNitric Oxide and Endothelin EffectsHeme Oxygenase-1 and Carbon Monoxide

Hemoglobin, nitric oxide and molecular mechanisms of hypoxic vasodilation

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Allen, Barry W., Stamler, Jonathan S., Piantadosi, Claude A.·2009·Trends in Molecular Medicine

Abstract

The protected transport of nitric oxide (NO) by hemoglobin (Hb) links the metabolic activity of working tissue to the regulation of its local blood supply through hypoxic vasodilation. This physiologic mechanism is allosterically coupled to the O(2) saturation of Hb and involves the covalent binding of NO to a cysteine residue in the beta-chain of Hb (Cys beta93) to form S-nitrosohemoglobin (SNO-Hb). Subsequent S-transnitrosation, the transfer of NO groups to thiols on the RBC membrane and then in the plasma, preserves NO vasodilator activity for delivery to the vascular endothelium. This SNO-Hb paradigm provides insight into the respiratory cycle and a new therapeutic focus for diseases involving abnormal microcirculatory perfusion. In addition, the formation of S-nitrosothiols in other proteins may regulate an array of physiological functions.

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Authors
Allen, B. W., Stamler, J. S., & Piantadosi, C. A.
Affiliations
Duke University (US)
Corresponding author
Allen, Barry W.
Venue
Trends in Molecular Medicine
Publisher
Elsevier BV
Published
2009-10
Volume
15
Issue
10
Pages
452-460
ISSN
1471-4914 (ISSN-L)
OpenAlex
W2033703576
Cited by
165
References
100
Citations by year
2026: 2 · 2025: 10 · 2024: 7 · 2023: 7 · 2022: 11 · 2021: 12 · 2020: 8 · 2019: 4 · 2018: 5 · 2017: 5 · 2016: 10 · 2015: 8 · 2014: 12 · 2013: 9 · 2012: 23
FWCI
1.38
Type
journal article
Language
en
Open access
Locations
  • Trends in Molecular Medicine (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Heart, Lung, and Blood Institute (R01HL091876)
  • Office of Naval Research
  • National Institute of Allergy and Infectious Diseases (R01AI064789)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Hemoglobin structure and function
  • Health Sciences › Medicine › Physiology › Nitric Oxide and Endothelin Effects
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Heme Oxygenase-1 and Carbon Monoxide
Keywords
nitric oxide, hemoglobin, hypoxic vasodilation, S-nitrosohemoglobin, S-nitrosothiols, oxygen saturation, erythrocyte membrane, microvascular blood flow, respiratory cycle, endothelium
MeSH terms
Animals, Endothelium, Vascular, Hemoglobins, Humans, Nitric Oxide, Oxygen, Vasodilation, Nitrosation, Cell Hypoxia, S-Nitrosothiols

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