European Heart Journal Advance Access originally published online on November 30, 2004
European Heart Journal 2005 26(4):332-342; doi:10.1093/eurheartj/ehi052
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Association of European population levels of thrombotic and inflammatory factors with risk of coronary heart disease: the MONICA Optional Haemostasis Study
1Department of Epidemiology and Public Health, Queen's University of Belfast, UK
2Department of Medicine, University of Glasgow, UK
3Department of Epidemiology, KTL-NPHI, Helsinki, Finland
Received 18 May 2004; revised 18 October 2004; accepted 21 October 2004; online publish-ahead-of-print 30 November 2004.
* Corresponding author. Tel: +44 28 90632746; fax: +44 28 90231907. E-mail address: j.yarnell{at}qub.ac.uk
See page 317 for the editorial comment on this article (doi:10.1093/eurheartj/ehi087)
Aims Classical risk factors do not fully explain international differences in risk of coronary heart disease (CHD). We therefore measured thrombotic and inflammatory markers in a substudy of the WHO MONICA project and correlated these with CHD event rates.
Methods and results We measured levels of fibrinogen (clottable and nephelometric), von Willebrand factor (vWf), tissue plasminogen activator antigen, plasminogen activator inhibitor activity, fibrin D-dimer, plasma viscosity, C-reactive protein, and total cholesterol in 12 MONICA populations (listed at the end of this paper), all but one European. Men and women aged 45–64 years were studied from 10 countries. All samples were collected using a carefully standardized protocol, and analysed centrally. Results were available for 3996 subjects (nephelometric fibrinogen and viscosity), 2378 subjects (other thrombotic assays), and 1757 subjects (C-reactive protein and total cholesterol). Significant differences in levels of thrombotic and inflammatory factors exist in MONICA populations mainly from European countries. These differences persist after adjustment for age, smoking habit, and body mass index. Cross-sectional correlations between coronary event rates and these thrombotic/inflammatory markers were significant for vWF antigen in both sexes, nephelometric fibrinogen in men, and D-dimer in women.
Conclusion In particular, vWF, nephelometric fibrinogen, and D-dimer should be examined in further research as potential risk factors which may help explain differences in coronary risk between European populations.
Key Words: Thrombosis • Risk markers • CHD • MONICA • Population studies
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