European Heart Journal Advance Access published online on August 21, 2006
European Heart Journal, doi:10.1093/eurheartj/ehl192
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1 Medizinische Klinik III, Eberhard Karls-Universität Tübingen, Otfried-Müller-Str. 10, D-72076 Tübingen, Germany
* To whom correspondence should be addressed. Aims Platelet collagen receptor glycoprotein VI (GPVI) is critical for the formation of arterial thrombosis. In this observational study, we examined the platelet surface expression of GPVI in patients with symptomatic coronary artery disease (CAD). Methods and results We evaluated a consecutive cohort of 367 patients with symptomatic CAD, who underwent coronary angiography. The surface expression of platelet activation markers (GPVI, CD62P, and CD42b) was determined by flow cytometry. Patients with acute coronary syndrome (ACS) showed a significantly enhanced GPVI expression on admission when compared with patients with stable angina pectoris (SAP) (ACS: 21.4 ± 9.7; SAP: 18.6 ± 7.1 mean fluorescence intensity ± SD; P = 0.004). The expression of GPVI correlated with CD62P (r = 0.702; P = 0.001). Logistic regression analysis demonstrated that on admission, elevated platelet GPVI expression was associated with ACS, independent of markers of myocardial necrosis such as troponin and creatine kinase. Conclusion Platelet GPVI surface expression is elevated in patients with ACS and is associated with imminent acute coronary events. The determination of the platelet-specific thrombotic marker GPVI may help to identify patients at risk before myocardial ischaemia is evident.
Received March 4, 2006
Revised June 23, 2006
Accepted July 27, 2006
Preclinical research
Expression of platelet collagen receptor glycoprotein VI is associated with acute coronary syndrome
Boris Bigalke 1, Stephan Lindemann 1 *, Raila Ehlers 1, Peter Seizer 1, Karin Daub 1, Harald Langer 1, Tanja Schonberger 1, Elisabeth Kremmer 2, Dorothea Siegel-Axel 1, Andreas E. May 1, and Meinrad Gawaz 1 *
2 Institute for Molecular Immunology, GSF-National Research Center for Environment and Health, Munich, Germany
Stephan Lindemann, E-mail: stephan.lindemann{at}med.uni-tuebingen.de
Meinrad Gawaz, E-mail: meinrad.gawaz{at}med.uni-tuebingen.de
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