Cited by 98Platelet Disorders and TreatmentsNitric Oxide and Endothelin EffectsBlood Coagulation and Thrombosis Mechanisms

Nitrolinoleate inhibits platelet activation by attenuating calcium mobilization and inducing phosphorylation of vasodilator-stimulated phosphoprotein through elevation of cAMP

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Coles, Barbara, Bloodsworth, Allison, Eiserich, Jason P., Coffey, Marcus J., McLoughlin, Rachel M., Giddings, John C., Lewis, Malcolm J., Haslam, Richard J. +2 more·2002·Journal of Biological Chemistry

Abstract

Reactive species formed from nitric oxide (NO) nitrate unsaturated fatty acids such as linoleate (LA) to nitrated derivatives including nitrolinoleate (LNO(2)). The effect of LNO(2) on human platelets was examined to define how nitrated lipids might behave in vivo. LNO(2), but not LA or 3-nitrotyrosine, dose dependently (0.5-10 microm) inhibited thrombin-mediated aggregation of washed human platelets, with concomitant attenuation of P-selectin expression and selective phosphorylation of VASP at the cAMP-dependent protein kinase selective site, serine 157. LNO(2) caused slight mobilization of calcium (Ca(2+)) from intracellular stores but significantly inhibited subsequent thrombin-stimulated Ca(2+) elevations. LNO(2) did not elevate platelet cGMP, and its effects were not blocked with inhibitors of NO signaling (oxyhemoglobin, 1H-[1,2,4]oxadiazole[4,3-a]quinoxalin-1-one. 2-fold elevations in cAMP were found following LNO(2) treatment of platelets, and the adenylyl cyclase inhibitors 2',5'-dideoxyadenosine and SQ22536 partially restored thrombin-stimulated aggregation. Finally, LNO(2) significantly inhibited cAMP hydrolysis to AMP by platelet lysates. These data implicate cAMP in the anti-aggregatory action of LNO(2). The platelet inhibitory actions of LNO(2) indicate that nitration reactions that occur following NO generation in an oxidizing environment can alter the activity of lipids and lend insight into mechanisms by which NO-derived species may modulate the progression of vascular injury.

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Crossref · 10.1074/jbc.m105209200

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  • Nitroalkene derivatives of fatty acids (NO2-FA) limit inflammatory responses by non-cGMP-dependent inhibition of platelet and neutrophil function and by inhibiting the catalytic activity and gene expression of cyclooxygenase-2 and xanthine oxidoreductase.

    “Finally, NO2-FA limit inflammatory responses by non-cGMP-dependent inhibition of platelet and neutrophil function [20], [21] and by inhibiting the catalytic activity and gene expression of the pro-inflammatory proteins cyclooxygenase-2 and xanthine oxidoreductase [22], [23].”

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Authors
Coles, B., Bloodsworth, A., Eiserich, J. P., Coffey, M. J., McLoughlin, R. M., Giddings, J. C., Lewis, M. J., Haslam, R. J., Freeman, B. A., & O'Donnell, V. B.
Affiliations
  • Cardiff University (GB)
  • University of Alabama (US)
  • University of Wales (GB)
  • McMaster University (CA)
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
2002-02
Volume
277
Issue
8
Pages
5832-5840
ISSN
0021-9258 (ISSN-L)
OpenAlex
W2066554947
Cited by
98
References
34
Citations by year
2026: 1 · 2025: 3 · 2024: 1 · 2022: 4 · 2019: 5 · 2018: 5 · 2017: 3 · 2016: 1 · 2015: 4 · 2014: 6 · 2013: 9 · 2012: 1
FWCI
2.92
Type
journal article
Language
en
Open access
Locations
  • Journal of Biological Chemistry (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (5p60hl058418-05)
  • National Heart, Lung, and Blood Institute (R01HL64937, R01HL064937, P6-HL-58418, R01HL058115, R01-HL-58115)
Topics
  • Health Sciences › Medicine › Hematology › Platelet Disorders and Treatments
  • Health Sciences › Medicine › Physiology › Nitric Oxide and Endothelin Effects
  • Health Sciences › Medicine › Hematology › Blood Coagulation and Thrombosis Mechanisms
Keywords
platelet activation, thrombin-induced aggregation, calcium mobilization, VASP, VASP phosphorylation, cyclic AMP, protein kinase A, P-selectin, adenylate cyclase, nitric oxide, vascular injury
MeSH terms
Cyclic AMP, Blood Platelets, Calcium, Cyclic GMP, Humans, Kinetics, Linoleic Acids, Nitro Compounds, Phosphoproteins, Phosphorylation, Platelet Aggregation, Thrombin, Tyrosine, Vasodilator Agents, 1-Methyl-3-isobutylxanthine, Platelet Activation, Linoleic Acid, Calcium Signaling, In Vitro Techniques

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