Cited by 19Hemoglobin structure and functionNitric Oxide and Endothelin EffectsMetal-Catalyzed Oxygenation Mechanisms

NO reactions with sol-gel and solution phase samples of the ferric nitrite derivative of HbA

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Roche, Camille J., Friedman, Joel M.·2010·Nitric Oxide

Abstract

The reaction of nitric oxide (NO) with the ferric (met) nitrite derivative of human adult hemoglobin Hb is probed for both solution phase and sol-gel encapsulated populations. The evolution of both the Q band absorption spectrum and fitted populations of Hb derivatives are used to show the sequence of events occurring when NO interacts with nitrite bound to a ferric heme in Hb. The sol-gel is used to compare the evolving populations as a function of quaternary state for the starting met-nitrite populations. The redox status of intermediates is probed using the CN(-) anion to trap ferric heme species. The emergent presence of reactive NO species such as N(2)O(3) during the course of the reaction is probed using the fluorescent probe DAF-2 whereas the fluorophore Chemifluor is used as an indirect measure of the ability of the reaction to create S-nitrosothiols on glutathione. The results are consistent with the formation of a stable reactive intermediate capable of generating bioactive forms of NO. The patterns observed are consistent with a proposed mechanism whereby NO reacts with the ferric nitrite derivative to generate N(2)O(3).

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Crossref · 10.1016/j.niox.2009.11.003

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  • 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 [99]

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  1. [61]Samuni U Roche C Danstker D Friedman J T and R State Tertiary Relaxations in Sol-Gel Encapsulated Hemoglobin 2008 Springer

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Authors
Roche, C. J., & Friedman, J. M.
Affiliations
Albert Einstein College of Medicine (US)
Corresponding author
Friedman, Joel M.
Venue
Nitric Oxide
Publisher
Elsevier BV
Published
2010-02
Volume
22
Issue
2
Pages
180-190
ISSN
1089-8603 (ISSN-L)
OpenAlex
W2012150923
Cited by
19
References
67
Citations by year
2024: 1 · 2019: 1 · 2016: 1 · 2014: 2 · 2013: 4 · 2012: 3
FWCI
1.33
Type
journal article
Language
en
Open access
Locations
  • Nitric Oxide (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health (5p01hl071064-05)
  • National Heart, Lung, and Blood Institute (P01HL-071064)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Hemoglobin structure and function
  • Health Sciences › Medicine › Physiology › Nitric Oxide and Endothelin Effects
  • Physical Sciences › Chemistry › Inorganic Chemistry › Metal-Catalyzed Oxygenation Mechanisms
Keywords
methemoglobin, sol-gel encapsulation, nitrous acid, S-nitrosothiols, glutathione, reaction mechanism
MeSH terms
Adult, Gels, Hemoglobins, Humans, Iron, Nitric Oxide, Nitrites, Nitrogen Oxides, Oxidation-Reduction, Solutions

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