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Tibbo ME, Limberg AK, Salib CG, Turner TW, McLaury AR, Jay AG, Bettencourt JW, Carter JM, Bolon B, Berry DJ, Morrey ME, Sanchez-Sotelo J, van Wijnen AJ, Abdel MP. Anti-fibrotic effects of the antihistamine ketotifen in a rabbit model of arthrofibrosis. Bone Joint Res 2020; 9:302-310. [PMID: 32728431 PMCID: PMC7376284 DOI: 10.1302/2046-3758.96.bjr-2019-0272.r2] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
Aims Arthrofibrosis is a relatively common complication after joint injuries and surgery, particularly in the knee. The present study used a previously described and validated rabbit model to assess the biomechanical, histopathological, and molecular effects of the mast cell stabilizer ketotifen on surgically induced knee joint contractures in female rabbits. Methods A group of 12 skeletally mature rabbits were randomly divided into two groups. One group received subcutaneous (SQ) saline, and a second group received SQ ketotifen injections. Biomechanical data were collected at eight, ten, 16, and 24 weeks. At the time of necropsy, posterior capsule tissue was collected for histopathological and gene expression analyses (messenger RNA (mRNA) and protein). Results At the 24-week timepoint, there was a statistically significant increase in passive extension among rabbits treated with ketotifen compared to those treated with saline (p = 0.03). However, no difference in capsular stiffness was detected. Histopathological data failed to demonstrate a decrease in the density of fibrous tissue or a decrease in α-smooth muscle actin (α-SMA) staining with ketotifen treatment. In contrast, tryptase and α-SMA protein expression in the ketotifen group were decreased when compared to saline controls (p = 0.007 and p = 0.01, respectively). Furthermore, there was a significant decrease in α-SMA (ACTA2) gene expression in the ketotifen group compared to the control group (p < 0.001). Conclusion Collectively, these data suggest that ketotifen mitigates the severity of contracture formation in a rabbit model of arthrofibrosis.
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Affiliation(s)
- Meagan E Tibbo
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | - Afton K Limberg
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | | | - Travis W Turner
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | - Alex R McLaury
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | - Anthony G Jay
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | | | - Jodi M Carter
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | | | - Daniel J Berry
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | - Mark E Morrey
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | | | - Andre J van Wijnen
- Department of Orthopedic Surgery and Department of Biochemistry & Molecular Biology, Mayo Clinic, Rochester, Minnesota, USA
| | - Matthew P Abdel
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota, USA
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Grahnemo L, Andersson A, Nurkkala-Karlsson M, Stubelius A, Lagerquist MK, Svensson MND, Ohlsson C, Carlsten H, Islander U. Trabecular bone loss in collagen antibody-induced arthritis. Arthritis Res Ther 2015. [PMID: 26209517 PMCID: PMC4514982 DOI: 10.1186/s13075-015-0703-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
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.
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Affiliation(s)
- Louise Grahnemo
- Centre for Bone and Arthritis Research, Department of Rheumatology and Inflammation Research, Institute of Medicine, The Sahlgrenska Academy, University of Gothenburg, Box 480, 405 30, Gothenburg, Sweden.
| | - Annica Andersson
- Centre for Bone and Arthritis Research, Department of Rheumatology and Inflammation Research, Institute of Medicine, The Sahlgrenska Academy, University of Gothenburg, Box 480, 405 30, Gothenburg, Sweden.
| | - Merja Nurkkala-Karlsson
- Centre for Bone and Arthritis Research, Department of Rheumatology and Inflammation Research, Institute of Medicine, The Sahlgrenska Academy, University of Gothenburg, Box 480, 405 30, Gothenburg, Sweden.
| | - Alexandra Stubelius
- Centre for Bone and Arthritis Research, Department of Rheumatology and Inflammation Research, Institute of Medicine, The Sahlgrenska Academy, University of Gothenburg, Box 480, 405 30, Gothenburg, Sweden.
| | - Marie K Lagerquist
- Centre for Bone and Arthritis Research, Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, The Sahlgrenska Academy, University of Gothenburg, Su Sahlgrenska, 413 45, Gothenburg, Sweden.
| | - Mattias N D Svensson
- Department of Rheumatology and Inflammation Research, Institute of Medicine, The Sahlgrenska Academy, University of Gothenburg, Box 480, 405 30, Gothenburg, Sweden.
| | - Claes Ohlsson
- Centre for Bone and Arthritis Research, Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, The Sahlgrenska Academy, University of Gothenburg, Su Sahlgrenska, 413 45, Gothenburg, Sweden.
| | - Hans Carlsten
- Centre for Bone and Arthritis Research, Department of Rheumatology and Inflammation Research, Institute of Medicine, The Sahlgrenska Academy, University of Gothenburg, Box 480, 405 30, Gothenburg, Sweden.
| | - Ulrika Islander
- Centre for Bone and Arthritis Research, Department of Rheumatology and Inflammation Research, Institute of Medicine, The Sahlgrenska Academy, University of Gothenburg, Box 480, 405 30, Gothenburg, Sweden.
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The MS4A family: counting past 1, 2 and 3. Immunol Cell Biol 2015; 94:11-23. [PMID: 25835430 DOI: 10.1038/icb.2015.48] [Citation(s) in RCA: 87] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2015] [Revised: 03/27/2015] [Accepted: 03/28/2015] [Indexed: 02/01/2023]
Abstract
The MS4A (membrane-spanning 4-domain family, subfamily A) family of proteins contains some well-known members including MS4A1 (CD20), MS4A2 (FcɛRIβ) and MS4A3 (HTm4). These three MS4A family members are expressed on the cell surface of specific leukocyte subsets and have been well characterized as having key roles in regulating cell activation, growth and development. However, beyond MS4A1-3 there are a large number of related molecules (18 to date in humans) where our understanding of their biological roles is at a relatively nascent stage. This review examines the larger MS4A family focusing on their structure, expression, regulation and characterized and/or emerging biological roles. Our own work on one family member MS4A8B, and its possible role in epithelial cell regulation, is also highlighted.
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