| Content Provider | Springer Nature : BioMed Central |
|---|---|
| Author | Tu-Rapp, Hoang Hammermüller, André Mix, Eilhard Kreutzer, Hans-Jürgen Goerlich, Roland Köhler, Hansjürgen Nizze, Horst Thiesen, Hans-Jürgen Ibrahim, Saleh M |
| Abstract | Collagen-induced arthritis (CIA) is a chronic inflammatory disease bearing all the hallmarks of rheumatoid arthritis, e.g. polyarthritis, synovitis, and subsequent cartilage/bone erosions. One feature of the disease contributing to joint damage is synovial hyperplasia. The factors responsible for the hyperplasia are unknown; however, an imbalance between rates of cell proliferation and cell death (apoptosis) has been suggested. To evaluate the role of a major pathway of cell death – Fas (CD95)/FasL – in the pathogenesis of CIA, DBA/1J mice with a mutation of the Fas gene (lpr) were generated. The susceptibility of the mutant DBA-lpr/lpr mice to arthritis induced by collagen type II was evaluated. Contrary to expectations, the DBA-lpr/lpr mice developed significantly milder disease than the control littermates. The incidence of disease was also significantly lower in the lpr/lpr mice than in the controls (40% versus 81%; P < 0.05). However DBA-lpr/lpr mice mounted a robust immune response to collagen, and the expression of local proinflammatory cytokines such as, e.g., tumor necrosis factor α (TNF-α) and IL-6 were increased at the onset of disease. Since the contribution of synovial fibroblasts to inflammation and joint destruction is crucial, the potential activating effect of Fas on mouse fibroblast cell line NIH3T3 was investigated. On treatment with anti-Fas in vitro, the cell death of NIH3T3 fibroblasts was reduced and the expression of proinflammatory cytokines TNF-α and IL-6 was increased. These findings suggest that impairment of immune tolerance by increased T-cell reactivity does not lead to enhanced susceptibility to CIA and point to a role of Fas in joint destruction. |
| Related Links | https://arthritis-research.biomedcentral.com/counter/pdf/10.1186/ar1205.pdf |
| Ending Page | 11 |
| Page Count | 11 |
| Starting Page | 1 |
| File Format | HTM / HTML |
| ISSN | 14786362 |
| DOI | 10.1186/ar1205 |
| Journal | Arthritis Research & Therapy |
| Issue Number | 5 |
| Volume Number | 6 |
| Language | English |
| Publisher | BioMed Central |
| Publisher Date | 2004-07-19 |
| Access Restriction | Open |
| Subject Keyword | Rheumatology Orthopedics apoptosis Fas rheumatoid arthritis tolerance |
| Content Type | Text |
| Resource Type | Article |
| Subject | Immunology and Allergy Immunology Rheumatology |
| Journal Impact Factor | 4.4/2023 |
| 5-Year Journal Impact Factor | 4.9/2023 |
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