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  • Title: Expression of anti-idiotypic clones against auto-anti-DNA antibodies in normal individuals.
    Author: Zouali M, Eyquem A.
    Journal: Cell Immunol; 1983 Feb 15; 76(1):137-47. PubMed ID: 6600978.
    Abstract:
    A serum pool from 280 blood donors and individual samples from blood donors were assayed for anti-idiotypic activity to auto-anti-DNA antibodies by competitive radioimmunoassays. We found that serum from several normal blood donors inhibited the binding activity of anti-DNA antibodies affinity purified from the sera of patients with systemic lupus erythematosus. This inhibition was due to immunoglobulin molecules but was not due to rheumatoid factor activity. Antiallotypic antibodies were not responsible for the anti-anti-DNA activity detected. Because this inhibition was blocked by DNA molecules, the observed reactivity was probably caused by idiotype-anti-idiotype interactions. These results provide evidence that anti-idiotype antibodies against anti-DNA autoantibodies are present in certain normal human sera. Anti-anti-DNA antibodies could play a role in the regulation of autoimmunity to DNA.
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