1992 Volume 15 Issue 1 Pages 29-37
Antiphospholipid antibodies, antibodies to cardiolipin (CL) and to phosphatidyl serine (PS), were measured in the sera of 197 patients with various collagen diseases, including 108 patients with systemic lupus erythematosus (SLE), 29 patients with mixed connective tissue disease (MCTD), 39 patients with rheumatoid arthritis, 13 patients with Sjögren's syndrome and 8 patients with scleroderma. IgG anti-CL antibodies were found in 68 (63%) of SLE, 18 (62.1%) of MCTD, 13 (33.3%) of rheumatoid arthritis, 9 (69.2%) of Sjögren's syndrome, and 2 (25%) of scleroderma. IgG anti-PS antibodies were also found in 39 (36.1%), 15 (51.7%), 10 (25.6%), 9 (69.2%), and 1 (12.5%), respectively.
In patients with SLE both antibodies were significantly related to thrombocytopenia, CNS lupus and spontaneous abortion. In patiens with MCTD there was a significant association between antiphospholipid antibodies and pulmonary hypertension. In patients with rheumatoid arthritis anti-CL antibody was significantly associated with positive antinuclear antibody, positive anti-SSA antibody and sicca symptom.
