title: Role of five platelet membrane glycoprotein polymorphisms in branch retinal vein occlusion.
abstract: To determine whether polymorphisms of platelet surface glycoprotein associated with arterial thrombosis are risk factors for branch retinal vein occlusion. A case-control study in which 69 patients with branch retinal vein occlusion and 147 controls who attended the eye clinic for nonvascular complications participated. DNA was extracted from whole blood and analyzed for genotyping of platelet glycoprotein polymorphisms by polymerase chain reactions and specific restricted enzymes. No relationship was found between the four platelet glycoprotein polymorphisms i.e. GPIa C807T, VNTR and Kozak of glycoprotein Ibalpha, the HPA-1 of glycoprotein IIIa and the occurrence of branch retinal vein occlusion. The HPA-2 polymorphism was found in 18 out 60 (30%) patients with branch retinal vein occlusion in comparison with 27 out 142 (19%) of controls, with an estimated odds ratio of 1.8 (95% confidence interval, 0.91-3.65). The four platelet glycoprotein polymorphisms are not risk factors for branch retinal vein occlusion and therefore it seems unnecessary to screen those patients for it. A larger study is required, however, to determine whether HPA-2 is a novel risk factor for branch retinal vein occlusion.
authors.affiliation: Amalia Biron Research Institute of Thrombosis and Hemostasis Chaim Sheba Medical Center, Tel Hashomer and Sackler Faculty of Medicine, Tel-Aviv University, Israel.
authors.forename: Ophira
authors.initials: O
authors.lastname: Salomon
authors.forename: Joseph
authors.initials: J
authors.lastname: Moisseiev
authors.forename: Tamara
authors.initials: T
authors.lastname: Vilganski
authors.forename: Rima
authors.initials: R
authors.lastname: Dardik
authors.forename: Shimon
authors.initials: S
authors.lastname: Kurtz
authors.forename: Eva
authors.initials: E
authors.lastname: Shpringer
authors.forename: David M
authors.initials: DM
authors.lastname: Steinberg
authors.forename: Nurit
authors.initials: N
authors.lastname: Rosenberg
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D016824:Antigens, Human Platelet / Q000235:genetics*; D016022:Case-Control Studies; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D018598:Minisatellite Repeats / Q000235:genetics*; D016017:Odds Ratio; D010980:Platelet Membrane Glycoproteins / Q000235:genetics*; D011110:Polymorphism, Genetic / Q000502:physiology*; D012170:Retinal Vein Occlusion / Q000235:genetics*; D012307:Risk Factors
chemical_list: D016824:Antigens, Human Platelet; D010980:Platelet Membrane Glycoproteins