title: Association between P-selectin gene polymorphisms and soluble P-selectin levels and their relation to coronary artery disease.
abstract: P-selectin is a cellular adhesion molecule that mediates the interaction of activated endothelial cells or platelets with leukocytes. Increased levels of soluble P-selectin have been reported in various cardiovascular disorders. We measured serum soluble P-selectin levels as well as 3 polymorphisms of the P-selectin gene (C-2123G, A-1969G, and Thr715Pro) in a large cohort of patients with documented coronary artery disease (n=869) and a healthy control group (n=334). The 3 P-selectin polymorphisms were strongly associated with P-selectin levels and altogether explained 7.3% and 18.6% of the P-selectin variability in patients and controls, respectively. Genotype distributions did not significantly differ between patients and controls. P-selectin levels were increased in patients younger than 55 years of age compared with controls (135.2 vs 114.3 ng/mL, P<0.01). On the contrary, patients older than 65 years of age had significantly lower P-selectin levels than did controls (121.5 vs 134.7 ng/mL, P<0.02). In intermediate age groups, P-selectin levels did not significantly differ between the 2 groups. In conclusion, this study revealed a strong association between P-selectin gene polymorphisms and serum P-selectin levels and a complex age-dependent relation between soluble P-selectin levels and coronary artery disease, which suggests that this molecule might have different roles in the atherothrombotic process.
authors.affiliation: Institut National de la Santé et de la Recherche Médicale (INSERM) U525, Paris, France.
authors.forename: S C
authors.initials: SC
authors.lastname: Barbaux
authors.forename: S
authors.initials: S
authors.lastname: Blankenberg
authors.forename: H J
authors.initials: HJ
authors.lastname: Rupprecht
authors.forename: C
authors.initials: C
authors.lastname: Francomme
authors.forename: C
authors.initials: C
authors.lastname: Bickel
authors.forename: G
authors.initials: G
authors.lastname: Hafner
authors.forename: V
authors.initials: V
authors.lastname: Nicaud
authors.forename: J
authors.initials: J
authors.lastname: Meyer
authors.forename: F
authors.initials: F
authors.lastname: Cambien
authors.forename: L
authors.initials: L
authors.lastname: Tiret
mesh_terms: D015331:Cohort Studies; D003324:Coronary Artery Disease / Q000097:blood / Q000209:etiology* / Q000235:genetics*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D019007:P-Selectin / Q000097:blood* / Q000235:genetics*; D020641:Polymorphism, Single Nucleotide; D012307:Risk Factors; D012907:Smoking / Q000009:adverse effects
chemical_list: D019007:P-Selectin