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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 ...
It is caused by certain antinuclear antibodies, e.g., the immunoglobulin G types of the anti-SSA/Ro autoantibodies (e.g., anti-Ro/SS-A and anti-La/SS-B) and anti-nRNP (also termed anti-U1RNP). These antibodies form in the mother and pass from her circulation through the placenta to the fetus where they cause an often severe form of SLE that is ...
This staining pattern is seen with anti-Ro and anti-La antibodies. Anti-Ro and anti-La antibodies, also known as SS-A and SS-B, respectively, are commonly found in primary Sjögren's syndrome, an autoimmune disorder that affects the exocrine glands. The presence of both antibodies is found in 30–60% of Sjögren's syndrome, anti-Ro antibodies ...
Neonatal lupus erythematosus is an autoimmune disease in an infant born to a mother with anti-Ro/SSA and with or without anti-La/SSB antibodies. [1] [2] The disease most commonly presents with a rash resembling subacute cutaneous lupus erythematosus and can have systemic abnormalities such as complete heart block or hepatosplenomegaly. [3]
Autoantibodies often tested include anti-Ro/SSA, [38] anti-nuclear antibody, anti-U1-RNP, anti-Ku, and anti-PM-Scl. [37] Although anti-La/SSB and anti-Ro/SSA are often associated with Sjogren's syndrome they have been associated with antisynthetase syndrome and severe fibrotic idiopathic interstitial lung disease by high-resolution computed ...
Association between HLA and SS is restricted to patients with anti-SSA/Ro or anti-SSB/La antibodies. Seropositivity for anti-Ro and anti-La is associated with greater severity and longer duration of disease, and findings of their high abundance from the salivary glands of Sjögren's patients suggests their imperative role in the pathogenesis of SS.
Positive Unit anti-SS-A (Ro) < 1.0 [164] n/a: ≥ 1.0 [164] Units (U) anti-SS-B (La) < 1.0 [165] n/a: ≥ 1.0 [165] Anti ds-DNA < 30.0 [166] 30.0–75.0 [166] > 75.0 [166] International Units per millilitre (IU/mL) Anti ss-DNA < 8 [167] 8–10 [167] > 10 [167] Units per millilitre (U/mL) Anti-histone antibodies < 25 [167] n/a [167] > 25 [167 ...
The Sharp criteria require at least four major criteria, as well as anti-U1-RNP antibody titer of at least 1:4000, or two major criteria from criteria 1, 2, and 3, and two minor criteria, plus anti-U1-RNP antibody titer of at least 1:1000. The sharp criteria also excludes anyone with a positive anti-Sm antibody. [69]