title: Risk factors for arterial thrombosis in antiphospholipid syndrome.
abstract: BACKGROUND
  Antiphospholipid syndrome (APS) is associated with the risk of both arterial and venous thrombosis. However, it is not known which factors might determine the location of thrombosis.
  
  
  METHODS
  To retrospectively characterize factors associated with the risk of arterial thrombosis in a cohort of APS patients. Analysis included laboratory and clinical criteria of APS, together with classical cardiovascular risk factors and the possible role of platelet integrin α₂β₁ (807 C/T) and α(IIb)β₃ (PI A1/2) genetic polymorphisms. We enrolled 163 APS patients (123 women and 40 men aged 21-75; mean age 43 years); 78 suffered from arterial thrombosis.
  
  
  RESULTS
  There were no significant differences in the frequency or titers of different antiphospholipid antibodies with the exception of slightly increased frequency of IgG anticardiolipin antibodies (ACL) in the arterial thrombosis group. Livedo reticularis was observed significantly more often in the arterial thrombosis group, particularly in stroke patients. In univariate analysis arterial thrombosis was associated with male gender (OR-2,201; p=0,033), arterial hypertension (OR-2,81; p=0,002) and hypercholesterolemia (OR-3,69; p=0,001). On multivariate analysis arterial hypertension (OR=1,78; p=0,008) and hypercholesterolemia (OR=2,001; p=0,002) remained as independent risk factors for arterial thrombosis. Platelet glycoprotein polymorphisms studied did not show any significant associations with arterial thrombosis in APS patients.
  
  
  CONCLUSIONS
  Among APS patients those with ACL IgG antibodies, having livedo reticularis, and suffering from hypertension an hypercholesterolemia are at the increased risk of arterial thrombosis.
authors: Department of Medicine, Jagiellonian University Medical College, Krakow, Poland.
authors: Aleksandra
authors: A
authors: Matyja-Bednarczyk
authors: Department of Medicine, Jagiellonian University Medical College, Krakow, Poland.
authors: Jakub
authors: J
authors: Swadźba
authors: Department of Medicine, Jagiellonian University Medical College, Krakow, Poland.
authors: Teresa
authors: T
authors: Iwaniec
authors: Department of Medicine, Jagiellonian University Medical College, Krakow, Poland.
authors: Marek
authors: M
authors: Sanak
authors: Department of Medicine, Jagiellonian University Medical College, Krakow, Poland.
authors: Sylwia
authors: S
authors: Dziedzina
authors: Faculty of Applied Mathematics, University of Science and Technology, Krakow, Poland.
authors: Adam
authors: A
authors: Ćmiel
authors: Department of Medicine, Jagiellonian University Medical College, Krakow, Poland. Electronic address: mmmusia@cyf-kr.edu.pl.
authors: Jacek
authors: J
authors: Musiał
mesh_terms: D000328:Adult; D000368:Aged; D017153:Antibodies, Anticardiolipin / Q000032:analysis; D017152:Antibodies, Antiphospholipid / Q000032:analysis; D016736:Antiphospholipid Syndrome / Q000150:complications* / Q000235:genetics; D002318:Cardiovascular Diseases / Q000453:epidemiology / Q000235:genetics; D005260:Female; D006801:Humans; D038982:Integrin alpha2beta1 / Q000235:genetics; D008297:Male; D008875:Middle Aged; D019039:Platelet Glycoprotein GPIIb-IIIa Complex / Q000235:genetics; D012189:Retrospective Studies; D012307:Risk Factors; D013927:Thrombosis / Q000453:epidemiology* / Q000235:genetics; D055815:Young Adult
chemical_list: D017153:Antibodies, Anticardiolipin; D017152:Antibodies, Antiphospholipid; D038982:Integrin alpha2beta1; D019039:Platelet Glycoprotein GPIIb-IIIa Complex
keywords: APA; APS; AT; Antiphospholipid antibodies; Antiphospholipid syndrome; Arterial thrombosis; CNS; Central Nervous System; DVT; LR; Livedo reticularis; Polymorphisms of the platelet integrins; RP; Raynaud's phenomenon; Risk factors for cardiovascular diseases; SAPS; SLE; Secondary Antiphospholipid syndrome, PAPS, Primary Antiphospholipid syndrome; Systemic Lupus Erythematosus, LA, lupus anticoagulant, DNA, Deoxyribonucleic acid; aCL; anticardiolipin; deep vein thrombosis; livedo reticularis