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Autoantibody to U3 nucleolar ribonucleoprotein (fibrillarin) in patients with systemic sclerosis.

Abstract
To determine the clinical significance of serum antibodies to the U3 small nuclear ribonucleoprotein particle ([U3]snRNP), we studied sera from 416 patients with systemic sclerosis (SSc) and 264 controls, using immunofluorescence and immunoprecipitation assays. The presence of serum anti-(U3)snRNP was highly specific to SSc, was found more frequently in blacks, and was associated with skeletal muscle disease and primary pulmonary arterial hypertension. These antibodies may identify one or more unusual clinical subsets of SSc.
AuthorsY Okano, V D Steen, T A Medsger Jr
JournalArthritis and rheumatism (Arthritis Rheum) Vol. 35 Issue 1 Pg. 95-100 (Jan 1992) ISSN: 0004-3591 [Print] UNITED STATES
PMID1731817 (Publication Type: Comparative Study, Journal Article, Research Support, Non-U.S. Gov't)
Chemical References
  • Autoantibodies
  • Chromosomal Proteins, Non-Histone
  • fibrillarin
Topics
  • Adult
  • Autoantibodies (analysis, immunology)
  • Chromosomal Proteins, Non-Histone (immunology)
  • Continental Population Groups
  • Cross-Sectional Studies
  • Female
  • Fluorescent Antibody Technique
  • Humans
  • Hypertension, Pulmonary (complications)
  • Male
  • Middle Aged
  • Musculoskeletal Diseases (complications)
  • Precipitin Tests
  • Scleroderma, Systemic (complications, immunology, mortality)

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