Abstract
Objectives
Generation of advanced glycation end products (AGE) is an inevitable process in vivo and can be accelerated under pathologic conditions such as oxidative stress, e.g. in rheumatoid arthritis (RA). This process is mediated by the AGE-specific receptor (RAGE). In this study we analysed the presence of RAGE in RA and osteoarthritic (OA) synovial tissue using immunohistology.
Methods
Frozen synovial tissue samples from 11 RA patients and 12 OA patients were treated with goat anti-RAGE immunoglobulin G (IgG) and rabbit antigoat IgG. Immunostaining was visualised with streptavidin horse radish peroxidase (chromogen amino-ethyl-carbazole). Cell differentiation was performed with antibodies against CD68, CD45RO, and CD20.
Results
In 9/11 RA and 8/12 OA synovial specimens, RAGE was detected in synovial lining, sublining, and stroma. In RA, many T cells (CD45RO+) and some macrophages (CD68+) showed positive immunostaining for RAGE, whereas B cells were mostly negative. We found no difference in staining patterns between the RA and OA samples.
Conclusions
We detected RAGE in RA and OA synovial tissue. The presence of RAGE on macrophages, T cells, and some B cells suggests its role in the pathogenesis of inflammatory joint disease.
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Drinda, S., Franke, S., Rüster, M. et al. Identification of the receptor for advanced glycation end products in synovial tissue of patients with rheumatoid arthritis. Rheumatol Int 25, 411–413 (2005). https://doi.org/10.1007/s00296-004-0456-y
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DOI: https://doi.org/10.1007/s00296-004-0456-y