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In contrast to the high specificity, estimates of 25–85% have been observed for the sensitivity of anti-dsDNA in SLE. Therefore, presence of anti-dsDNA antibodies are suggestive of SLE, however an absence of the antibodies does not rule out the disease. [1] The levels of circulating anti-dsDNA antibodies fluctuate with disease activity in SLE.
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.
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 in particular. [19] The rate of progression is higher in the first five years following the onset of the disease and tends to decrease over time.
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 ...
The anti-dsDNA antibody titers also tend to reflect disease activity, although not in all cases. [13] Other ANA that may occur in people with SLE are anti-U1 RNP (which also appears in systemic sclerosis and mixed connective tissue disease), SS-A (or anti-Ro) and SS-B (or anti-La; both of which are more common in Sjögren's syndrome). SS-A and ...
References range may vary with age, sex, race, pregnancy, [10] diet, use of prescribed or herbal drugs and stress. Reference ranges often depend on the analytical method used, for reasons such as inaccuracy, lack of standardisation, lack of certified reference material and differing antibody reactivity. [11]
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These autoantibodies, none of which are present in all cases of SLE, include the: a) antinuclear (i.e., ANA) and anti-dsDNA antibodies; b) anti-Sm, anti-RNP, anti-SSA, and anti–SS-B antibodies (anti-SSA and anti-SS-B antibodies are associated with less severe forms of cSLE); [30]) c) antiphospholipid autoantibodies including the lupus ...
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