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Review : Significance of IgA antiphospholipid antibodies

Department of Medicine, Louisiana State University, New Orleans, LA

Z. Faghiri

Shiraz University of Medical Sciences, Shiraz, Iran

F. Taheri

Shiraz University of Medical Sciences, Shiraz, Iran

AE Gharavi

Morehouse School of Medicine, Atlanta, Georgia

IgA anticardiolipin (IgA aCL) and IgA anti β₂-glycoprotein-I(IgA anti β₂GP1) antibodies are common in SLE and have been associated in some studies with thromboses and thrombocytopenia. Experimental work suggests that IgA aCL are as prothrombotic as the IgG-IgM isotypes. However, in SLE there appears to be less concordance between IgA aCl and IgA anti β₂GP1 as compared with the concordance between IgG and IgM isotypes, suggesting significant differences in their origins and specificities. For example, there may be a greater mucosal contribution to production of IgA antiβ₂GP1 than IgA aCL. Infections may have a greater role in the presence of IgA aCL than IgA antiβ₂GP1 antibodies.

Key Words: IgA anticardiolipin • IgA antiβ2glycoprotein • SLE • HAM-TSP • HTLV-1

Lupus, Vol. 7, No. 2 suppl, S110-S113 (1998)
DOI: 10.1177/096120339800700225


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