BACKGROUND Immunoglobulin G (IgG) anticardiolipin (aCL) antibodies are associated with valvulopathy and endocarditis in patients with lupus and other diseases. During acute Q fever, high IgG aCL prevalence has been reported, but the clinical significance remains unknown. METHODS To test if increased IgG aCL at acute Q fever diagnosis is associated with an increased risk of progression to endo...

BACKGROUND AND PURPOSE Antiphospholipid antibodies have been associated with ischemic stroke in some but not all studies. METHODS We performed a population-based case-control study examining antiphospholipid antibodies (anticardiolipin antibodies and lupus anticoagulants) using stored frozen sera and plasma in 160 cases and 340 controls enrolled in the Stroke Prevention in Young Women study. ...

Background and Purpose The aims of this prospective and multicenter study were to determine the frequency of anticardiolipin and antinuclear antibodies in an unselected ischemic and hemorrhagic stroke population and to evaluate the clinical significance of these autoantibodies. Methods Over a 1-year period, we collected plasma from 481 consecutive patients with ischemic or hemorrhagic stroke at...

Abstract The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) disease (COVID-19) is prone to thrombotic events with pathogenic mechanism that are still incompletely understood. Occurrence of antiphospholipid antibodies, especially anticardiolipin was described in many viral infections and could be part the chain micro-thrombosis occurrence COVID-19. We herein present three cases COV...

background : graves’ disease is an autoimmune disease, characterized by the presence of antibodies directed to tsh receptor or nearby regions as well as antibodies to double strands dna (dsdna) anticardiolipin and nuclear antibodies. this study evaluated anticardiolipin and rheumatoid factor, such as iga and igm antibodies in patients with graves’ disease.   patients and methods: anticardiolipi...

Antibodies against prothrombin are detected by enzyme immunoassays (EIA) in sera of patients with antiphospholipid syndrome (APS). However, there are two methods for antiprothrombin EIA; one that uses high binding plates (aPT-A), and another that utilizes phosphatidylserine bound plates (aPS/PT). We aimed to evaluate and compare aPT-A and aPS/PT in a clinical setting. We performed EIA for anti-...

Several reports have linked the presence of certain serum autoantibodies with particular clinical manifestations of autoimmune disease. For example, the Jo-1 antibody is now established as a marker for fibrosing alveolitis in polymyositis. To investigate the possible association of further autoantibodies or idiotypes with fibrosing alveolitis in autoimmune rheumatic disease a panel of autoantib...

Systemic lupus erythematosus (SLE) is highly prevalent in Malaysia, which has a mixed population of Malays, Chinese, and Indians. A quantitative enzyme linked immunosorbent assay (ELISA) was used to determine anticardiolipin antibody (aCL) levels (total immunoglobulin, IgG, and IgM) in 200 patients with SLE (164 Chinese, 26 Malay, and 10 Indian) attending the University Hospital of Kuala Lumpur...

Some authors have found a strong statistical association of antibodies to prothrombin (aPT) with thrombosis in patients with antiphospholipid syndrome (APS); others have not confirmed this finding. It is unknown if the detection of aPT, in addition to anticardiolipin (aCL) and anti-beta2-glycoprotein-I (abeta2GP-I) antibodies, provides additional information in the clinical study of these patie...

Hepatitis C virus (HCV) infection has been associated with de novo or recurrent membranoproliferative glomerulonephritis and acute transplant glomerulopathy in transplanted kidneys. Recently, anticardiolipin antibodies (ACA) have been linked with chronic HCV infection. A few reports have suggested an association between ACA and renal allograft thrombosis. This study examines the clinical and pa...