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  • Title: Disease distribution of beta 2-glycoprotein I-dependent anticardiolipin antibodies in rheumatic diseases.
    Author: Kaburaki J, Kuwana M, Yamamoto M, Kawai S, Matsuura E, Ikeda Y.
    Journal: Lupus; 1995 Feb; 4 Suppl 1():S27-31. PubMed ID: 7757107.
    Abstract:
    We investigated the clinical significance of IgG beta 2-glycoprotein I (GPI)-dependent anticardiolipin antibodies (aCL) in rheumatic diseases. Three hundred and seventeen patients were entered. They consisted of 133 patients with SLE, 60 with RA, 45 with SSc, 37 with PM, 23 with overlap syndrome (overlap), and 19 with unclassified connective tissue disease (UCTD). IgG beta 2-GPI-dependent aCL were examined by ELISA. While IgG beta 2-GPI-dependent aCL were detected in 13% of patients with SLE, these aCL were positive in two patients with SSc, two with overlap and 14 with UCTD. A significant association between IgG beta 2-GPI-dependent aCL and thrombosis was found. Clinical manifestations were studied in 32 patients with secondary APS based on SLE and 14 with primary APS (PAPS). Incidence of malar rash, arthritis, renal disorder, leucopenia, immunological disorders and hypocomplementemia were significantly less frequent in patients with PAPS. IgG beta 2-GPI-dependent aCL were detected in all patients with PAPS and in 34% of secondary APS. This difference was significant. These data suggest that IgG beta 2-dependent aCL are useful for identifying a subset in patients with APS.
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