Seronegative Antiphospholipid Syndrome with Anti-phosphatidylethanolamine Antibody in a Boy.

Revisiting Beta 2 Glycoprotein I, the Major Autoantigen in the Antiphospholipid Syndrome

Beta 2 glycoprotein I (β2GPI) is a single chain 50 kDa highly glycosylated glycoprotein at an approximate concentration of 4 μM in cells. The abundance of this protein in plasma and its high state of preservation indicate the important role of this protein in mammalian. In addition, β2GPI has a particular structure in the fifth domain, and is categorized as the major antigen recognized by autoa...

New clinical and laboratory finding in anti-phospholipid syndromes

Antiphospholipid syndrome (APS) is a systemic autoimmune disease with the appearance of anti-phospholipid antibody (ACLA), Anti β2GPI and lupus anticoagulant (LAC) in serum. The antigen-antibody reaction on cell surface leads to thrombosis, miscarriage and inflammation. Clinical findings are diverse and include thrombosis in veins and arteries, pregnancy loss, thrombocytopenia, neurological and...

Central retinal vein occlusion in a pediatric patient with SLE and antiphospholipid antibodies without anti-cardiolipin or anti-β2 glycoprotein I antibodies

BACKGROUND Antiphospholipid antibody syndrome is characterized by venous and/or arterial thrombosis, and is found in patients with systemic lupus erythematosus. Its diagnosis requires the presence of both clinical and laboratory findings, such as positive anti-cardiolipin and anti-β2 glycoprotein I antibodies and lupus anticoagulant. However, cardiolipin is a minor component of the vascular end...

Detection of multiple annexin autoantibodies in a patient with recurrent miscarriages, fulminant stroke and seronegative antiphospholipid syndrome

Anti-phospholipid syndrome (APS) is one of the main causes for recurrent miscarriages. The diagnosis of APS is based on the occurrence of clinical symptoms such as thrombotic events or obstetric complications as well as the detection of antiphospholipid antibodies directed against β2-glycoprotein I and cardiolipin, or a positive lupus anticoagulant assay. However, there is a subpopulation of pa...

A Case of Gaucher\'s Disease with Recurrent Fetal Loss and Antiphospholipid Antibody Syndrome