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  • Title: [Anti-DNA antibodies: structure and pathogenic role].
    Author: Ayed K.
    Journal: Arch Inst Pasteur Tunis; 2000; 77(1-4):3-9. PubMed ID: 14658221.
    Abstract:
    Anti DNA antibodies are generally classified into two major groups: Anti ds DNA (anti double .. stranded DNA) antibody and anti ss-DNA (anti single-stranded DNA) antibody. Anti-ds DNA antibodies are highly specific to systemic lupus erythematosus (SLE) and are probably involved in the pathogenesis of lupus nephritis. There are numerous serological tests for detecting anti-ds DNA. The detection of anti-ds DNA antibodies in the circulation of patients is one of the major criteria for the diagnosis of SLE; moreover, exacerbation of the disease are proceeded by increasing anti-DNA levels and the development of lupus nephritis, one of the most serious complications of the disease, strongly correlates with the presence of high avidity anti-DNA. It was reported that even normal individuals express anti-ds DNA. However, anti ds DNA found in healthy individuals is usually of the immunoglobulin M (IgM) isotype and shows a low affinity to ds-DNA. These natural antibodies are characterized by a wide cross-reactivity and are usually encoded by gene segments in the germ line configuration. In contrast, the ds-DNA antibodies involved influenced by various findings supporting the proposition that anti-ds DNA is involved in the pathogenesis of SLE, an enormous amount of scientific investigation has failed to reveal the exact mechanism through which this occurs.
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