High-avidity anti-DNA antibody removal from the serum of systemic lupus erythematosus patients by adsorption using dextran sulfate cellulose columns.
The purpose of this study is to determine whether immunoadsorption treatment using a dextran sulfate (DS) column can remove high-avidity anti-double-stranded DNA (anti-dsDNA) antibody from the blood of patients with systemic lupus erythematosus (SLE). Before and after each immunoadsorption therapy routine, titers of the high-avidity anti-dsDNA antibody of 11 SLE patients were measured by using a newly developed assay kit to exclusively detect high avidity anti-DNA antibody. Patients with active SLE showed significantly higher titers of high-avidity antibody than did those with inactive SLE, and their titers were significantly reduced by immunoadsorption procedures. Removal of high-avidity antibodies in vitro was also confirmed by mixing patients' sera and DS gel. Immunoadsorption therapy using DS columns is effective in the removal of high-avidity anti-dsDNA antibodies that are closely associated with pathogenicity in SLE.
Matsuki
Y
Y
National Defense Medical College, Saitama, Japan.
Suzuki
K
K
Kawakami
M
M
Ishizuka
T
T
Kawaguchi
Y
Y
Hidaka
T
T
Nakamura
H
H
D000328:Adult; D001323:Autoantibodies / Q000097:blood / Q000302:isolation & purification*; D004247:DNA / Q000276:immunology*; D016264:Dextran Sulfate; D005260:Female; D006801:Humans; D007163:Immunosorbent Techniques; D008180:Lupus Erythematosus, Systemic / Q000276:immunology*; D008297:Male; D008875:Middle Aged
D001323:Autoantibodies; D004247:DNA; D016264:Dextran Sulfate