Trabecular bone loss in collagen antibody-induced arthritis
| Autor: | Louise Grahnemo, Claes Ohlsson, Ulrika Islander, Alexandra Stubelius, Hans Carlsten, Mattias Svensson, Marie K Lagerquist, Annica Andersson, Merja Nurkkala-Karlsson |
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| Jazyk: | angličtina |
| Předmět: |
medicine.medical_specialty
Osteoporosis Immunology Arthritis Inflammation Antibodies Mice Rheumatology Internal medicine medicine Animals Humans Immunology and Allergy Osteoporosis Postmenopausal Innate immune system biology business.industry medicine.disease Arthritis Experimental Mice Inbred C57BL Disease Models Animal Rheumatoid arthritis biology.protein Polyarthritis Female medicine.symptom Antibody business Research Article |
| Zdroj: | Arthritis Research & Therapy |
| ISSN: | 1478-6354 |
| DOI: | 10.1186/s13075-015-0703-5 |
| Popis: | Introduction Postmenopausal women with rheumatoid arthritis (RA) have increased risk of developing osteoporosis due to chronic inflammation and estrogen deprivation. Collagen antibody-induced arthritis (CAIA), an experimental polyarthritis model representing the effector phase of arthritis, is mainly mediated by the innate immune system. Compared to the widely used collagen-induced arthritis model, CAIA is conveniently short and can be used in C57BL/6 mice, enabling studies with knock-out mice. However, the impact on bone of the CAIA model in C57BL/6 mice has not previously been studied. Therefore, the aim of this study was to determine if CAIA can be used to study postmenopausal arthritis-induced osteoporosis. Methods CAIA was induced by administration of collagen-type II antibodies and lipopolysaccharide to ovariectomized female C57BL/6J mice. Control mice received lipopolysaccharide, but no antibodies. Nine days later, femurs were collected for high-resolution micro-CT and histomorphometry. Serum was used to assess cartilage breakdown and levels of complement. Frequencies of immune cell subsets from bone marrow and lymph nodes were analyzed by flow cytometery. Results Trabecular bone mass was decreased and associated with increased number of osteoclasts per bone surface in the CAIA model. Also, the frequency of interleukin-17+ cells in lymph nodes was increased in CAIA. Conclusion The present study show that CAIA, a short reproducible arthritis model that is compatible with C57BL/6 mice, is associated with increased number of osteoclasts and trabecular bone loss. |
| Databáze: | OpenAIRE |
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