alexa The association of anti-Ro52 autoantibodies with myositis and scleroderma autoantibodies.
Pulmonology

Pulmonology

Journal of Pulmonary & Respiratory Medicine

Author(s): Frank MB, McCubbin V, Trieu E, Wu Y, Isenberg DA,

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Abstract The presence of autoantibodies to the Ro52 protein in sera from patients with idiopathic inflammatory myopathies has recently been reported. These antibodies were found predominately in sera with the myositis-specific autoantibody anti-histidyl-tRNA synthetase (anti-Jo-1). In this report, we analysed sera from 216 patients to determine whether anti-Ro52 antibodies are associated with myositis autoantibodies other than anti-Jo-1. These included sera containing antibodies that recognize threonyl- or alanyl-tRNA synthetases, Mi-2, PM-Scl, signal recognition particle (SRP), as well as the systemic sclerosis-related antibodies anti-topoisomerase I (Scl-70) and anti-centromere. A high proportion of sera that contain anti-aminoacyl-tRNA synthetase antibodies, anti-SRP, or anti-PM-Scl antibodies were found to contain antibodies to the Ro52 protein. In contrast, in sera containing anti-Mi-2, anti-Scl-70 or anti-centromere antibodies, anti-Ro52 antibodies were absent or occurred infrequently. In addition, only one serum from 41 rheumatoid arthritis patients was positive for anti-Ro52 autoantibodies. These data indicate that anti-Ro52 antibodies are produced in particular subsets of myositis patients, and are not limited to sera with anti-Jo-1 antibodies. Copyright 1999 Academic Press. This article was published in J Autoimmun and referenced in Journal of Pulmonary & Respiratory Medicine

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