BACKGROUND AND PURPOSE: Cerebral venous thrombosis (CVT) may be a manifestation of underlying autoimmune disease. Antibodies against annexin A2 (anti-A2Ab) coincide with antiphospholipid syndrome, in which antiphospholipid antibodies (aPLA) are associated with thrombosis in any vascular bed. Annexin A2, a profibrinolytic receptor and binding site for β2-glycoprotein-I, the main target for aPLA, is highly expressed on cerebral endothelium. Here we evaluate the prevalence of anti-A2Ab in CVT. METHODS: Forty individuals with objectively documented CVT (33 women and 7 men) and 145 healthy controls were prospectively studied for hereditary and acquired prothrombotic risk factors, classical aPLA, and anti-A2Ab. RESULTS: One or more prothrombotic risk factors were found in 85% of CVT subjects, (pregnancy/puerperium in 57.5%, classical aPLA in 22.5%, and hereditary procoagulant risk factors in 17.5%). Anti-A2Ab (titer >3 SD) were significantly more prevalent in patients with CVT (12.5%) than in healthy individuals (2.1%, P<0.01, OR, 5.9). CONCLUSIONS: Anti-A2Ab are significantly associated with CVT and may define a subset of individuals with immune-mediated cerebral thrombosis.
BACKGROUND AND PURPOSE:Cerebral venous thrombosis (CVT) may be a manifestation of underlying autoimmune disease. Antibodies against annexin A2 (anti-A2Ab) coincide with antiphospholipid syndrome, in which antiphospholipid antibodies (aPLA) are associated with thrombosis in any vascular bed. Annexin A2, a profibrinolytic receptor and binding site for β2-glycoprotein-I, the main target for aPLA, is highly expressed on cerebral endothelium. Here we evaluate the prevalence of anti-A2Ab in CVT. METHODS: Forty individuals with objectively documented CVT (33 women and 7 men) and 145 healthy controls were prospectively studied for hereditary and acquired prothrombotic risk factors, classical aPLA, and anti-A2Ab. RESULTS: One or more prothrombotic risk factors were found in 85% of CVT subjects, (pregnancy/puerperium in 57.5%, classical aPLA in 22.5%, and hereditary procoagulant risk factors in 17.5%). Anti-A2Ab (titer >3 SD) were significantly more prevalent in patients with CVT (12.5%) than in healthy individuals (2.1%, P<0.01, OR, 5.9). CONCLUSIONS:Anti-A2Ab are significantly associated with CVT and may define a subset of individuals with immune-mediated cerebral thrombosis.
Authors: Paola Sebastiani; Marco F Ramoni; Vikki Nolan; Clinton T Baldwin; Martin H Steinberg Journal: Nat Genet Date: 2005-03-20 Impact factor: 38.330
Authors: José M Ferro; Patrícia Canhão; Jan Stam; Marie-Germaine Bousser; Fernando Barinagarrementeria Journal: Stroke Date: 2004-02-19 Impact factor: 7.914
Authors: R M Bertina; B P Koeleman; T Koster; F R Rosendaal; R J Dirven; H de Ronde; P A van der Velden; P H Reitsma Journal: Nature Date: 1994-05-05 Impact factor: 49.962
Authors: P L Meroni; A Tincani; N Sepp; E Raschi; C Testoni; E Corsini; I Cavazzana; S Pellegrini; A Salmaggi Journal: Lupus Date: 2003 Impact factor: 2.911
Authors: V Salle; J C Mazière; A Smail; R Cévallos; C Mazière; V Fuentes; B Tramier; R Makdassi; G Choukroun; O Vittecoq; V Goëb; J P Ducroix Journal: J Clin Immunol Date: 2008-03-06 Impact factor: 8.317