The relationships of three measurements of the factor VIII/von Willebrand factor (VWF) complex (factor VIII activity, FVIIIc (one-stage assay) ; VWF antigen, VWF Ag (ELISA) ; and VWF activity, VWF act, measured by a recently-developed ELISA) to major ischaemic heart disease (IHD) events were studied in 1997 men aged 49-65 years, in the second phase of the Caerphilly Heart Study.
These variables were related using logistic regression analysis to myocardial infarction or IHD death, which occurred in 129 men during an average follow-up period of 61 months.
All three measurements were highly correlated (r=0.63-0.77), and each was significantly associated with incident major IHD on univariate analyses (relative odds in highest fifth compared to lowest fifth, 1.68-1.90 ; P=0.028-0.006) and on multivariate analyses adjusting for major IHD risk factors and for baseline IHD.
Neither FVIIIc nor VWF act was significantly related to incident IHD following adjustment for VWF Ag.
We therefore suggest that the associations between these three measurements of the factor VIII/VWF complex and incident IHD might have at least three explanations :
VWF Ag is a marker of arterial endothelial disturbance ;
VWF act promotes platelet adhesion/aggregation and hence the platelet component of arterial thrombosis ;
and FVIIIc promotes fibrin formation and hence the fibrin component of arterial thrombosis.
Mots-clés Pascal : Cardiopathie coronaire, Facteur risque, Epidémiologie, Facteur coagulation, Facteur antihémophilique A, Facteur Willebrand, Royaume Uni, Europe, Etude cohorte, Homme, Appareil circulatoire pathologie
Mots-clés Pascal anglais : Coronary heart disease, Risk factor, Epidemiology, Coagulation factor, Factor VIII, Willebrand factor, United Kingdom, Europe, Cohort study, Human, Cardiovascular disease
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 99-0229932
Code Inist : 002B12A03. Création : 16/11/1999.