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Neutrophil activation status in stable coronary artery disease
Linköping University, Linköping.ORCID iD: 0000-0002-4319-7208
Linköping University, Linköping.
Linköping University, Linköping.
Linköping University, Linköping.
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2007 (English)In: PloS one, ISSN 1932-6203, Vol. 2, no 10, p. e1056-Article in journal (Refereed) Published
Abstract [en]

Background: During the last years, neutrophils have emerged as important players in atherogenesis. They are highly activated in peripheral blood of patients with unstable angina. Moreover, a primed state of circulating neutrophils has been proposed in patients with stable angina. Our aim was to investigate the neutrophil activation status in patients with stable coronary artery disease (CAD) at conventional drug treatment.

Methodology and principal findings: Thirty patients with stable CAD and 30 healthy controls were included using a paired design. The neutrophil expression of CD18 and high-affinity state of CD11b was analysed by flow cytometry before and after stimulation with chemoattractants. Also, the production of reactive oxygen species (ROS) was determined by chemiluminescence. During basal conditions, the neutrophil expression of CD18 or high-affinity state of CD11b did not differ between patients and controls. Chemoattractants (Interleukin-8 and Leukotriene B(4)) did not increase either the expression or the amount of high-affinity CD11b/CD18-integrins in CAD patients compared to controls, and had no effect on the production of ROS. On the other hand, the ROS production in response to C3bi-opsonised yeast particles and the neutrophils' inherent capacity to produce ROS were both significantly decreased in patients.

Conclusion/significance: We could not find any evidence that neutrophils in patients with stable CAD were primed, i.e. more prone to activation, compared to cells from healthy controls. According to our data, the circulating neutrophils in CAD patients rather showed an impaired activation status. It remains to be elucidated whether the neutrophil dysfunction in CAD is mainly a marker of chronic disease, an atherogenic factor or a consequence of the drug treatment.

Place, publisher, year, edition, pages
San Fransisco, USA: Public Library of Science , 2007. Vol. 2, no 10, p. e1056-
National Category
Medical and Health Sciences Medical Biotechnology (with a focus on Cell Biology (including Stem Cell Biology), Molecular Biology, Microbiology, Biochemistry or Biopharmacy)
Identifiers
URN: urn:nbn:se:oru:diva-41301DOI: 10.1371/journal.pone.0001056ISI: 000207458500003PubMedID: 17957240Scopus ID: 2-s2.0-42349116102OAI: oai:DiVA.org:oru-41301DiVA, id: diva2:780274
Available from: 2015-01-14 Created: 2015-01-14 Last updated: 2017-10-17Bibliographically approved

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