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This assay can be quantitative or semi-quantitative, allowing for estimations of the levels of anti-dsDNA antibodies. This test can produce false positives due to contamination of ssDNA from denatured dsDNA. EIA detects low and high avidity anti-dsDNA antibodies, increasing its sensitivity and reducing its specificity. [1]
Anti-double stranded DNA (anti-dsDNA) antibodies are highly associated with SLE. They are a very specific marker for the disease, with some studies quoting nearly 100%. [8] Data on sensitivity ranges from 25 to 85%. Anti-dsDNA antibody levels, known as titres, correlate with disease activity in SLE; high levels indicate more active lupus.
the degree of modification of the capillaroscopy test (skin blood vessel study technique) of nail fold during follow-up. the presence of antinuclear antibodies. young age. [21] severe vitamin D deficiency. [22] the presence of anti-dsDNA, anti-Sm and anti-cardiolipin autoantibodies correlates with the development of systemic lupus erythematosus ...
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 ...
For instance, up to 80% of those with SLE will have a positive double strand anti-double stranded DNA (anti-dsDNA) autoantibody test, but only about 25–30% will have a positive RNP. Some individuals who do have an autoimmune disorder will have negative autoantibody test results, but at a later date – as the disorder progresses - the ...
Subtypes of antinuclear antibodies include anti-Smith and anti-double stranded DNA antibodies (which are linked to SLE) and anti-histone antibodies (which are linked to drug-induced lupus). Anti-dsDNA antibodies are highly specific for SLE; they are present in 70% of cases, whereas they appear in only 0.5% of people without SLE. [13]
The kinetoplast found in C. luciliae allows them to be used for the detection of anti-dsDNA antibodies, a type of anti-nuclear antibody. Anti-nuclear antibodies are a common feature in SLE, and anti-dsDNA antibodies are highly specific for the disease. The high concentration of dsDNA and the absence of human nuclear antigens in the kinetoplast ...
This would result in the antibody-antigen complex not precipitating; leading to invalid results. [4] In addition, some anti-SS-B antibodies commonly identified in Sjögren syndrome may not be detected with this method. However, this method is economically feasible and specific to confirm a diagnosis.
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