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In contrast, pathogenic anti-dsDNA antibodies found in SLE are usually of IgG isotype and show high avidity for dsDNA. [15] One possible mechanism for anti-dsDNA and their role in nephritis is the formation of immune complexes that arise by indirect binding to DNA or nucleosomes that are adhered to the glomerular basement membrane (GBM).
After incubation with serum containing anti-dsDNA antibodies and fluorescent-labelled anti-human antibodies, the kinetoplast will fluoresce. The lack of other nuclear antigens in this organelle means that using C. luciliae as a substrate allows for the specific detection of anti-dsDNA antibodies.
An extractable nuclear antigen panel, or an ENA panel, tests for presence of autoantibodies in the blood that react with proteins in the cell nucleus. It is usually done as a follow-up to a positive antinuclear antibody test and when one is showing symptoms of an autoimmune disorder. The ANA tests for the presence or absence of autoantibodies ...
Blood compatibility testing is routinely performed before a blood transfusion.The full compatibility testing process involves ABO and RhD (Rh factor) typing; screening for antibodies against other blood group systems; and crossmatching, which involves testing the recipient's blood plasma against the donor's red blood cells as a final check for incompatibility.
Immunological criteria: Individuals exhibiting 1) high serum levels of antinuclear antibodies; 2) high serum levels of anti-dsDNA antibodies; 3) high serum levels of anti-Sm antibodies; 4) high blood levels of antiphospholipid antibodies, high blood levels of the lupus anticoagulant, a false positive rapid plasma reagin test, or a medium to ...
Patients with drug-induced lupus erythematosus typically have positive tests for anti-histone antibodies but do not have indications for anti-dsDNA antibodies. Patients with idiopathic systemic lupus erythematosus have both types of autoantibodies present in their blood. Thus, this test can be useful in distinguishing these two illnesses. [9]
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