Cited by 67Hemoglobin structure and functionNitric Oxide and Endothelin EffectsHeme Oxygenase-1 and Carbon Monoxide

Hemoglobin mediated nitrite activation of soluble guanylyl cyclase

Jeffers, Anne, Xu, Xiuli, Huang, Kris T., Cho, Man, Hogg, Neil, Patel, Rakesh P., Kim-Shapiro, Daniel B.·2005·Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology

Abstract

Nitrite has long been known to be vasoactive when present at large concentrations but it was thought to be inactive under physiological conditions. Surprisingly, we have recently shown that supraphysiological and near physiological concentrations of nitrite cause vasodilation in the human circulation. These effects appeared to result from reduction of nitrite by deoxygenated hemoglobin. Thus, nitrite was proposed to play a role in hypoxic vasodilation. We now discuss these results in the context of nitrite reacting with hemoglobin and effecting vasodilation and present new data modeling the nitric oxide (NO) export from the red blood cell and measurements of soluble guanylate cyclase (sGC) activation. We conclude that NO generated within the interior of the red blood cell is not likely to be effectively exported directly as nitric oxide. Thus, an intermediate species must be formed by the nitrite/deoxyhemoglobin reaction that escapes the red cell and effects vasodilation.

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Crossref · 10.1016/j.cbpb.2005.04.016

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  • Several proposed mechanisms explain how nitrite-derived bioactivity can be exported from the red blood cell, generally involving either a compartment model with submembrane localization or formation of another nitrogen oxide such as a nitrosothiol or N2O3.

    “Several proposed mechanisms have been constructed to explain how nitrite-derived bioactivity can be exported from the red blood cell and these generally involve either a compartment model with submembrane localization of the reaction allowing for inefficient free NO escape, or the formation of another nitrogen oxide such as a nitrosothiol or N2O3 that can get out of the red blood cell and carry NO”

    From Mechanisms of nitrite bioactivation (2014) · cites this paper as [45]

  • Formation of N2O3 from nitrite would facilitate export of NO activity from the red blood cell and evidence for the formation of this species has been reported.

    “Formation of N2O3 from nitrite would facilitate export of NO activity from the red blood cell and evidence for the formation of this species has been reported [45–47, 99].”

    From Mechanisms of nitrite bioactivation (2014) · cites this paper as [45]

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Authors
Jeffers, A., Xu, X., Huang, K. T., Cho, M., Hogg, N., Patel, R. P., & Kim-Shapiro, D. B.
Affiliations
  • Wake Forest University (US)
  • Medical College of Wisconsin (US)
  • University of Alabama at Birmingham (US)
Venue
Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology
Publisher
Elsevier BV
Published
2005-10
Volume
142
Issue
2
Pages
130-135
ISSN
1095-6433 (ISSN-L)
OpenAlex
W1986272386
Cited by
67
References
24
Citations by year
2021: 1 · 2020: 1 · 2019: 1 · 2018: 3 · 2017: 4 · 2016: 2 · 2015: 3 · 2014: 3 · 2013: 4 · 2012: 4
FWCI
3.13
Type
journal article
Language
en
Open access
closed
Locations
  • Comparative Biochemistry and Physiology Part A Molecular & Integrative Physiology (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health
  • National Heart, Lung, and Blood Institute (R01HL070146, HL58091, HL 70146, R01HL058091)
  • National Institute of General Medical Sciences (GM55792)
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
nitrite, hemoglobin, soluble guanylate cyclase, nitric oxide, hypoxic vasodilation, erythrocytes, nitrite reduction, vasodilation
MeSH terms
Soluble Guanylyl Cyclase, Cyclic AMP, Animals, Biological Assay, Cell Line, Computer Simulation, Diffusion, Enzyme Activation, Erythrocytes, Cyclic GMP, Guanylate Cyclase, Hemoglobins, Humans, Immunoenzyme Techniques, Insecta, Models, Biological, Models, Chemical, Nitric Oxide, Nitrites, Vasodilation, Receptors, Cytoplasmic and Nuclear

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