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The Jo-1 antibody system in myositis: relationships to clinical features and HLA.

Abstract
Antibodies to Jo-1, a saline extractable nuclear antigen, were found in 11/47 (23%) patients with myositis and in 0/35 controls with systemic lupus erythematosus or progressive systemic sclerosis (p less than or equal to 0.01). Within myositis subgroups, anti-Jo-1 occurred in 6/20 (30%) with polymyositis, 2/16 (13%) with dermatomyositis and 3/7 (43%) with overlap. There was an association between Jo-1 antibodies and HLA-DR3, irrespective of race or clinical subgroups (p less than or equal to 0.05). All anti-Jo-1 positive patients had either HLA-DR3, HLA-DRW6 or both (p less than or equal to 0.01). Thus, this antibody system might arise as a result of an aberrant immune response mediated at or near HLA-D in patients with myositis.
AuthorsF C Arnett, T J Hirsch, W B Bias, M Nishikai, M Reichlin
JournalThe Journal of rheumatology (J Rheumatol) 1981 Nov-Dec Vol. 8 Issue 6 Pg. 925-30 ISSN: 0315-162X [Print] CANADA
PMID6977032 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't, Research Support, U.S. Gov't, Non-P.H.S., Research Support, U.S. Gov't, P.H.S.)
Chemical References
  • Antibodies, Antinuclear
  • HLA Antigens
  • HLA-DR Antigens
  • Histocompatibility Antigens Class II
Topics
  • Antibodies, Antinuclear (analysis)
  • Female
  • HLA Antigens (analysis, immunology)
  • HLA-DR Antigens
  • Histocompatibility Antigens Class II
  • Humans
  • Myositis (immunology, physiopathology)

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