Blockade of tumour necrosis factor significantly alters the serum level of IgG- and IgA-rheumatoid factor in patients with rheumatoid arthritis
| Autor: | Mueller T, Winfried Graninger, G Tilz, Babak Yazdani-Biuki, Brezinschek Ri, Stadlmaier E, Mulabecirovic A, Ulrike Demel, Kerstin Brickmann, H.-P. Brezinschek |
|---|---|
| Rok vydání: | 2005 |
| Předmět: |
Male
musculoskeletal diseases Immunoglobulin A medicine.medical_specialty Concise Report Immunology Severity of Illness Index Receptors Tumor Necrosis Factor General Biochemistry Genetics and Molecular Biology Immunoglobulin G Etanercept Arthritis Rheumatoid Rheumatology Rheumatoid Factor Internal medicine medicine Adalimumab Humans Immunology and Allergy Rheumatoid factor skin and connective tissue diseases Aged Autoantibodies biology Tumor Necrosis Factor-alpha business.industry Autoantibody Middle Aged medicine.disease Endocrinology Antirheumatic Agents Rheumatoid arthritis biology.protein Female Antibody business Follow-Up Studies medicine.drug |
| Zdroj: | Annals of the Rheumatic Diseases. 64:1224-1226 |
| ISSN: | 0003-4967 |
| DOI: | 10.1136/ard.2004.030262 |
| Popis: | Objective: To determine the effect on the humoral immune system of long term treatment of patients with RA with etanercept. Methods: 12 consecutive patients with seropositive RA treated with etanercept were studied and followed up for 9 months. Clinical efficacy of treatment was evaluated using the 28 joint count Disease Activity Score (DAS28). Serum samples were collected at baseline and after 9 months and serum immunoglobulin, RF isotypes, and anti-cyclic citrullinated peptide (aCCP), antinuclear, nucleosome, and dsDNA antibodies determined. For comparison 7 patients with seropositive RA treated with adalimumab were studied. Results: DAS28 decreased significantly after the first month and then was constant for the whole study (5.7 (0.3) v 3.8 (0.2), p⩽0.000). Serum IgA-RF and IgG-RF increased significantly after 9 months’ etanercept treatment (mean (SEM) IgA-RF rose from 19.5 (4.8) to 30.5 (5.9) IU/ml, p⩽0.01; IgG-RF from 20.6 (8.1) to 33.8 (11.5) IU/ml, p⩽0.04). Serum levels of total immunoglobulin and specific autoantibodies remained unchanged during the study. In patients treated with adalimumab, no significant changes in serum levels of RF isotypes and aCCP antibodies were seen. Conclusion: Etanercept, although effective in treating the clinical symptoms of RA, seems to have a pivotal effect on RF-producing B cells either directly or indirectly. |
| Databáze: | OpenAIRE |
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