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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]
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.
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 provides a specific substrate for the detection of anti-dsDNA antibodies. [4] [8]
ENA (extractable nuclear antigen) panel tests, test for autoantibodies to proteins in the cell nucleus. The term "extractable" is derived from the ability to remove the autoantibodies from the nuclei with saline and common proteins. The method of identifying these specimens is why they are also referred to as antibodies to saline-extracted ...
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 ...
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 ...
In immunohistochemistry and flow cytometry, antibodies to TdT can be used to demonstrate the presence of immature T and B cells and pluripotent hematopoietic stem cells, which possess the antigen, while mature lymphoid cells are always TdT-negative. While TdT-positive cells are found in small numbers in healthy lymph nodes and tonsils, the ...
Immunofluorescence pattern of SS-A and SS-B antibodies. Produced using serum from a patient on HEp-20-10 cells with a FITC conjugate. Anti-SSA autoantibodies (anti–Sjögren's-syndrome-related antigen A autoantibodies, also called anti-Ro, or similar names including anti-SSA/Ro, anti-Ro/SSA, anti–SS-A/Ro, and anti-Ro/SS-A) are a type of anti-nuclear autoantibodies that are associated with ...