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Bone and TNF in rheumatoid arthritis: clinical implications
Maria Manara1, Luigi Sinigaglia1
1Department of Rheumatology , Gaetano Pini Institute , Milan , Italy.
Abstract:
Experimental data have demonstrated that tumour necrosis factor (TNF) plays a significant role in systemic and local bone loss related to rheumatoid arthritis (RA). In clinical studies on patients with RA, treatment with TNF inhibitors was able to arrest systemic bone loss assessed by bone mineral density and bone turnover markers, but there is scarce evidence of a clinically meaningful effect of TNF inhibition in preventing fractures. TNF inhibitors showed a higher efficacy in reducing radiographic progression related to the disease compared to methotrexate in randomised clinical trials. Data from observational studies seem to confirm the effectiveness of anti-TNF therapy in reducing joint damage evolution.
Insights
Tumor necrosis factor (TNF) inhibitors help reduce bone loss and joint damage in rheumatoid arthritis (RA). However, evidence for their effectiveness in preventing fractures remains limited.
Area of Science:
- Rheumatology
- Immunology
- Bone Metabolism
Background:
- Tumor necrosis factor (TNF) is implicated in bone loss associated with rheumatoid arthritis (RA).
- TNF inhibitors are used to manage RA, impacting systemic and local bone loss.
Purpose of the Study:
- To evaluate the clinical effectiveness of TNF inhibitors in rheumatoid arthritis, focusing on bone loss and fracture prevention.
- To compare the efficacy of TNF inhibitors against methotrexate in reducing radiographic progression in RA patients.
Main Methods:
- Analysis of clinical trial data on TNF inhibitors in RA patients.
- Review of observational studies assessing anti-TNF therapy outcomes.
- Assessment of bone mineral density and bone turnover markers.
- Evaluation of radiographic progression and joint damage evolution.
Main Results:
- TNF inhibitors effectively arrested systemic bone loss, as indicated by bone mineral density and turnover markers.
- Limited evidence exists for a clinically significant effect of TNF inhibition on fracture prevention.
- Randomized clinical trials demonstrated higher efficacy of TNF inhibitors in reducing radiographic progression compared to methotrexate.
- Observational studies support the effectiveness of anti-TNF therapy in mitigating joint damage progression.
Conclusions:
- TNF inhibitors are effective in managing bone loss and radiographic progression in rheumatoid arthritis.
- Further research is needed to establish the role of TNF inhibitors in fracture prevention in RA patients.
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