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Citrulline. Arginine. Anti-citrullinated protein antibodies ( ACPAs) are autoantibodies ( antibodies to an individual's own proteins) that are directed against peptides and proteins that are citrullinated. They are present in the majority of patients with rheumatoid arthritis. Clinically, cyclic citrullinated peptides (CCP) are frequently used ...
t. e. Reference ranges (reference intervals) for blood tests are sets of values used by a health professional to interpret a set of medical test results from blood samples. Reference ranges for blood tests are studied within the field of clinical chemistry (also known as "clinical biochemistry", "chemical pathology" or "pure blood chemistry ...
Rheumatoid factor ( RF) is the autoantibody that was first found in rheumatoid arthritis. It is defined as an antibody against the Fc portion of IgG and different RFs can recognize different parts of the IgG-Fc. [1] RF and IgG join to form immune complexes that contribute to the disease process such as chronic inflammation and joint destruction ...
The by far most common clinical test for ACPAs is the anti-cyclic citrullinated peptide (anti CCP) ELISA. In 2008 a serological point-of-care test for the early detection of RA combined the detection of RF and anti-MCV with a sensitivity of 72% and specificity of 99.7%. [74] [better source needed] [75]
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6037 503847 Ensembl ENSG00000169397 ENSMUSG00000050766 UniProt P12724 Q5GAN2 RefSeq (mRNA) NM_002935 NM_017389 RefSeq (protein) NP_002926 NP_059085 Location (UCSC) Chr 14: 20.89 – 20.89 Mb n/a PubMed search Wikidata View/Edit Human View/Edit Mouse Eosinophil cationic protein (ECP) also known as ribonuclease 3 is a basic protein located in the eosinophil primary matrix. In humans, the ...
Anti-histone antibodies. Anti-histone antibodies are autoantibodies that are a subset of the anti-nuclear antibody family, which specifically target histone protein subunits or histone complexes. [1] They were first reported by Henry Kunkel, H.R. Holman, and H.R.G. Dreicher in their studies of cellular causes of lupus erythematosus in 1959–60.
The specificity of this test is >98%. Thus, a positive anti-centromere antibody finding is strongly suggestive of limited systemic scleroderma. Anti-centromere antibodies present early in the course of disease and are notably predictive of limited cutaneous involvement and a decreased likelihood of aggressive internal organ involvement, such as ...