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  • Title: Sensitivity and specificity of anti-Jo-1 antibodies in autoimmune diseases with myositis.
    Author: Vázquez-Abad D, Rothfield NF.
    Journal: Arthritis Rheum; 1996 Feb; 39(2):292-6. PubMed ID: 8849382.
    Abstract:
    OBJECTIVE: To determine the sensitivity and specificity of anti-Jo-1 in systemic sclerosis (SSc) patients with and without myositis. METHODS: Immunoblots on HeLa nuclei were used to screen sera from 554 consecutive connective tissue disease patients. Those who had 45-55-kd bands, all patients with polymyositis/dermatomyositis (PM/DM), and a random selection of SSc, Raynaud's disease, systemic lupus erythematosus, and rheumatoid arthritis patients were also studied by anti-Jo-1 enzyme-linked immunosorbent assay and by immunoblots on rabbit pooled aminoacyl-transfer RNA synthetase. RESULTS: Anti-Jo-1 was present only in 8 of the 40 PM/DM patients. CONCLUSION: Anti-Jo-1 is specific for PM/DM.
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