Journal
SEMINARS IN THROMBOSIS AND HEMOSTASIS
Volume 38, Issue 4, Pages 348-352Publisher
THIEME MEDICAL PUBL INC
DOI: 10.1055/s-0032-1304716
Keywords
antiphospholipid syndrome; thrombosis; abortion; antiphospholipid antibodies
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The antiphospholipid syndrome (APS) is defined by the association of arterial and/or venous thrombosis and/or pregnancy complications with the presence of at least one of the main laboratory-detected antiphospholipid antibodies (aPL) (i.e., lupus anticoagulants [LA], IgG and/or IgM anticardiolipin antibodies [aCL], and IgG and/or IgM anti-beta(2)-glycoprotein I antibodies [a beta(2)GPI]). During the last decade efforts have been made to improve the harmonization and reproducibility of laboratory detection of aPL and guidelines have been published. The prognostic significance of aPL is being clarified through the fine elucidation of their antigenic targets and pathogenic mechanisms. Several clinical studies have consistently reported that LA is a stronger risk factor for both arterial and venous thrombosis compared with aCL and a beta(2)GPI. In particular, LA activity dependent on the first domain of beta(2)-glycoprotein I and triple aPL positivity are prognosticators of the thrombotic and obstetric risks. Hopefully, this increasing knowledge will help improve diagnostic and treatment strategies for APS.
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