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Published in: Current Osteoporosis Reports 1/2014

01-03-2014 | Osteoimmunology (D Novack and G Schett, Section Editors)

Autoantibody-Mediated Bone Loss

Authors: Ulrike Harre, Nicolai A. Kittan, Georg Schett

Published in: Current Osteoporosis Reports | Issue 1/2014

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Abstract

In rheumatoid arthritis (RA), the presence of autoantibodies such as the rheumatoid factor and antibodies against citrullinated proteins is highly correlated with the severity of disease and bone loss. For many years, the involvement of autoantibodies in bone resorption has merely been attributed to enhanced tissue infiltration and the production of inflammatory cytokines that promote osteoclastogenesis. However, recent research provides evidence for a direct activation of osteoclasts and their precursors by autoantibodies, which is independent of inflammation. The depletion of B-cells with rituximab that substantially reduces autoantibody levels seems to be as effective as the well-established treatment with tumor necrosis factor-antagonists in RA patients that do not respond to methotrexate, highlighting the significance of autoantibodies for RA and bone loss.
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Metadata
Title
Autoantibody-Mediated Bone Loss
Authors
Ulrike Harre
Nicolai A. Kittan
Georg Schett
Publication date
01-03-2014
Publisher
Springer US
Published in
Current Osteoporosis Reports / Issue 1/2014
Print ISSN: 1544-1873
Electronic ISSN: 1544-2241
DOI
https://doi.org/10.1007/s11914-013-0185-9

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