title: Platelet glycoprotein IIIa polymorphism HPA 1b (PlA2): no association with platelet fibrinogen binding.
abstract: The role of the platelet glycoprotein (GP) IIIa polymorphism HPA 1b (PlA2) in the risk of arterial thrombosis is controversial. We investigated the effect of the 1b allele on platelet fibrinogen binding by flow cytometry. Samples from 35 healthy platelet and plasma donors possessing the 1b allele were compared with 35 1a/1a donors. We found no allele-dependent difference in percentage of platelets binding fibrinogen (P = 0.6), nor in mean cell fluorescence (P = 0.3) following stimulation with ADP. These results render it unlikely that any relationship between the 1b polymorphism and arterial thrombosis is mediated by a significant effect on fibrinogen binding.
authors.affiliation: Department of Medicine and Therapeutics, University of Aberdeen.
authors.forename: D J
authors.initials: DJ
authors.lastname: Meiklejohn
authors.forename: S J
authors.initials: SJ
authors.lastname: Urbaniak
authors.forename: M
authors.initials: M
authors.lastname: Greaves
mesh_terms: D000328:Adult; D001792:Blood Platelets / Q000378:metabolism*; D005260:Female; D005340:Fibrinogen / Q000378:metabolism*; D005434:Flow Cytometry; D005838:Genotype; D006579:Heterozygote; D006720:Homozygote; D006801:Humans; D008297:Male; D008875:Middle Aged; D019039:Platelet Glycoprotein GPIIb-IIIa Complex / Q000235:genetics*; D011110:Polymorphism, Genetic; D012307:Risk Factors; D013927:Thrombosis / Q000235:genetics* / Q000378:metabolism
chemical_list: D019039:Platelet Glycoprotein GPIIb-IIIa Complex; D005340:Fibrinogen