Cited by 495Nitric Oxide and Endothelin EffectsRedox biology and oxidative stressHemoglobin structure and function

A Tutorial on the Diffusibility and Reactivity of Free Nitric Oxide

Lancaster, J.R.·1997·Nitric Oxide

Abstract

In this review, I consider the quantitative consequences of the diffusion of free NO in determining its biological actions. Several studies have measured the extent to which NO diffuses away from an NO-producing cell, and the distance of its diffusion is quite large, on the order of 100-200 microm. This wide diffusibility is consistent also with the high value for its diffusion constant, 3300 microm2/s. Mathematical simulations based on this wide diffusibility suggest that, within spatial limits of approximately 0.3-0.4 mm, the actions of free NO are dictated by the total number of NO-producing cells within this location as opposed to where the NO-producing cells are located within this space. These results suggest that the actions of NO are surprisingly long range and the diffusion of NO is an important determinant of its biological actions. Thus, the effects of NO on individual target cells may be determined more by each cell's preprogrammed characteristic response to NO than by proximity to an NO source. In addition, scavenging of NO by hemoglobin in blood vessels should represent a significant sink for its scavenging, posing difficulty for the postulate that only free NO functions as EDRF.

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Crossref · 10.1006/niox.1996.0112

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Authors
Lancaster, J. R.
Affiliations
Louisiana State University (US)
Corresponding author
Lancaster, J.R.
Venue
Nitric Oxide
Publisher
Elsevier BV
Published
1997-02
Volume
1
Issue
1
Pages
18-30
ISSN
1089-8603 (ISSN-L)
OpenAlex
W2030654802
Cited by
495
References
39
Citations by year
2026: 4 · 2025: 8 · 2024: 16 · 2023: 9 · 2022: 12 · 2021: 10 · 2020: 20 · 2019: 12 · 2018: 14 · 2017: 20 · 2016: 23 · 2015: 16 · 2014: 18 · 2013: 14 · 2012: 22
FWCI
9.09
Type
journal article
Language
en
Open access
closed
Locations
  • Nitric Oxide (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Institute of Diabetes and Digestive and Kidney Diseases (DK 46935, R01DK046935)
Topics
  • Health Sciences › Medicine › Physiology › Nitric Oxide and Endothelin Effects
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Redox biology and oxidative stress
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Hemoglobin structure and function
Keywords
diffusion, diffusion coefficient, long-distance signaling, endothelium-derived relaxing factor, nitric oxide scavenging, hemoglobin
MeSH terms
Animals, Diffusion, Models, Biological, Models, Chemical, Nitric Oxide

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