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Int Arch Allergy Immunol. 1994;103(3):239-44.

Detection of beta-2-glycoprotein-I-dependent antiphospholipid antibodies and anti-beta-2-glycoprotein-I antibody in patients with systemic lupus erythematosus and in patients with syphilis.

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  • 1Department of Medicine, Teikyo University, School of Medicine, Tokyo, Japan.


We investigated whether or not antiphospholipid antibodies (aPLs; antiphosphadidylserine antibody, aPS; antiphosphatididylinositol antibody, aPI; antiphosphatidic acid antibody, aPA, and antiphosphadidylethanolamine antibody, aPE) were beta 2-glycoprotein-I (GPI)-dependent antibodies like anticardiolipin antibody (aCL) in patients with systemic lupus erythematosus (SLE). None of the patients with syphilis or healthy controls was positive for any GPI-dependent aPL. By contrast, GPI-dependent aCL (40%), aPS (20%), aPI (18%), aPA (12%) and aPE (8%) were detected in patients with SLE. Among these, 4 patients were negative for aCL, but positive for aPS. Those who were positive for more than 2 types of aPL, along with lupus anticoagulant, had a high incidence of arteriovenous thrombosis, fetal loss, thrombocytopenia and biological false-positive reaction to syphilis. From these findings we conclude that GPI-dependent aPLs, other than aCL, are present in patients with SLE, and we should examine more than 2 types of aPL, such as a combination of aCL and aPS, to avoid overlooking aPL. Furthermore, we confirmed that GPI-independent aPL was not rare in SLE patients, but the clinical significance of this type of aPL in this clinical setting is unclear.

[PubMed - indexed for MEDLINE]
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