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High frequency of antibody activity against ribosomal protein S10 in anti-Sm sera from patients with systemic lupus erythematosusDepartment of Medicine (II), Niigata University School of Medicine, Asahimachi Dori 1-757, Niigata 951-8510, Japan
Institute of High Polymer Research, Faculty of Textile Science and Technology, Shinshu University, Tokita 3-15-1, Ueda 386-8567, Japan
Department of Internal Medicine, Niigata Kenritsu Chuo Hospital, Minamishinmachi 205, Joetsu 943-0847, Japan
Department of Medicine (II), Niigata University School of Medicine, Asahimachi Dori 1-757, Niigata 951-8510, Japan This study was carried out to clarify the frequency of detection of antibody activity to ribosomal protein S10 (anti-S10) in patients with systemic lupus erythematosus (SLE) with anti-Sm antibodies (anti-Sm), and clinical differences between anti-Sm-positive SLE patients with and without anti-S10. Twenty-seven of 31 serum samples containing anti-Sm reacted with ribosomal protein S10 along with Sm core proteins B/B' and D (87.1%). Four serum samples containing anti-Sm against only B/B' but not D did not react with S10 (12.9%). Patients who had both anti-Sm and anti-S10 showed lower serum complements levels, high frequency of skin lesion and anti-double-stranded DNA antibody. Many anti-Sm antibodies may recognize B/B', D, and S10 simultaneously, and such antibodies may appear in active disease.
Key Words: anti-Sm antibody anti-S10 antibody systemic lupus erythematosus
Lupus, Vol. 8, No. 6,
439-443 (1999) |
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