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Associations between macrophage colony-stimulating factor and monocyte chemotactic protein 1 in plasma and first-time coronary events : A Nested case-control Study

Author:
  • Alexandru Schiopu
  • Eva Bengtsson
  • Isabel Goncalves
  • Jan Nilsson
  • Gunilla Nordin Fredrikson
  • Harry Björkbacka
Publishing year: 2016
Language: English
Publication/Series: Journal of the American Heart Association
Volume: 5
Issue: 9
Document type: Journal article
Publisher: Wiley-Blackwell

Abstract english

Myeloid cells play a central role in atherosclerosis. We investigated the associations between the plasma levels of growth factors and chemokines that regulate myeloid cell homeostasis and function and the risk of first-time acute coronary events in middle-aged persons. Methods and Results-We measured baseline plasma levels of macrophage colony-stimulating factor monocyte chemotactic protein 1; C-C motif chemokine ligands 3, 4, and 20; C-X-C motif chemokine ligands 1, 6, and 16; and C-X3-C motif chemokine ligand 1 in 292 participants who had a coronary event during follow-up and 366 controls matched for age, sex, and time of inclusion who remained event free. Study participants were recruited from the Malmö Diet and Cancer Study population cohort and had no previous history of coronary artery disease. We found a strong independent negative association between macrophage colony-stimulating factor and incident coronary events in a forward stepwise Cox proportional hazards model including all biomarkers alongside the classic Framingham risk factors (age, sex, smoking, total cholesterol, high-density lipoprotein cholesterol, systolic blood pressure), diabetes mellitus, and medication. Conversely, monocyte chemotactic protein 1 had the strongest independent positive association with the outcome. The addition of macrophage colony-stimulating factor and monocyte chemotactic protein 1 significantly improved the predictive ability of a model including traditional risk factors alone (C statistic 0.81 [95% CI 0.78-0.84] versus 0.67 [95% CI 0.63-0.71]; net reclassification index 0.52 [0.42-0.62]; P<0.001). The combined model led to a 54% net downclassification of participants who did not have a coronary event during follow-up and was particularly effective in the intermediate-risk group. Conclusions-High levels of macrophage colony-stimulating factor and low levels of monocyte chemotactic protein 1 in plasma characterize middle-aged persons at low risk to develop clinically manifested coronary artery disease.

Keywords

  • Cardiac and Cardiovascular Systems
  • Coronary artery disease
  • Inflammation
  • Innate immunity
  • Leukocytes
  • Macrophage colony-stimulating factor
  • Monocyte chemotactic protein 1

Other

Published
  • Cardiovascular Research - Immunity and Athersosclerosis
  • ISSN: 2047-9980
E-mail: jan [dot] nilsson [at] med [dot] lu [dot] se

Lund University Diabetes Centre, CRC, SUS Malmö, Jan Waldenströms gata 35, House 91:12. SE-214 28 Malmö. Telephone: +46 40 39 10 00