Platelet density per monocyte predicts adverse events in patients after percutaneous coronary intervention

Bert Rutten*, Mark Roest, Elizabeth A. McClellan, Jan W. Sels, Andrew Stubbs, J. Wouter Jukema, Pieter A. Doevendans, Johannes Waltenberger, Anton-Jan van Zonneveld, Gerard Pasterkamp, Philip G. de Groot, Imo E. Hoefer

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

3 Citations (Web of Science)

Abstract

Monocyte recruitment to damaged endothelium is enhanced by platelet binding to monocytes and contributes to vascular repair. Therefore, we studied whether the number of platelets per monocyte affects the recurrence of adverse events in patients after percutaneous coronary intervention (PCI). Platelet-monocytes complexes with high and low median fluorescence intensities (MFI) of the platelet marker CD42b were isolated using cell sorting. Microscopic analysis revealed that a high platelet marker MFI on monocytes corresponded with a high platelet density per monocyte while a low platelet marker MFI corresponded with a low platelet density per monocyte (3.4 +/- 0.7 vs 1.4 +/- 0.1 platelets per monocyte, P=0.01). Using real-time video microscopy, we observed increased recruitment of high platelet density monocytes to endothelial cells as compared with low platelet density monocytes (P=0.01). Next, we classified PCI scheduled patients (N=263) into groups with high, medium and low platelet densities per monocyte and assessed the recurrence of adverse events. After multivariate adjustment for potential confounders, we observed a 2.5-fold reduction in the recurrence of adverse events in patients with a high platelet density per monocyte as compared with a low platelet density per monocyte [hazard ratio=0.4 ( 95 % confidence interval, 0.2-0.8), P=0.01]. We show that a high platelet density per monocyte increases monocyte recruitment to endothelial cells and predicts a reduction in the recurrence of adverse events in patients after PCI. These findings may imply that a high platelet density per monocyte protects against recurrence of adverse events.
Original languageEnglish
Pages (from-to)353-360
JournalThrombosis and Haemostasis
Volume115
Issue number2
DOIs
Publication statusPublished - Feb 2016

Keywords

  • Monocytes
  • platelets
  • adverse events
  • percutaneous coronary intervention

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