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Nakahara R, Ito A, Nakahata A, Nagai-Tanima M, Kawai H, Uchiyama K, Nishitani K, Wang T, Aoyama T, Kuroki H. Development of a novel model for intraarticular adhesion in rat knee joint. PLoS One 2023; 18:e0292000. [PMID: 37733702 PMCID: PMC10513256 DOI: 10.1371/journal.pone.0292000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Accepted: 09/10/2023] [Indexed: 09/23/2023] Open
Abstract
In this study, a novel rat model of knee joint adhesion was developed, and its formation was analyzed quantitatively over time. Thirty-nine Wistar rats were randomly divided into intact control (n = 3) and experimental (n = 36) groups. The latter was equally divided into three groups according to the experimental intervention: fixed with deep bending of the knee joint (group I), fixed after incision of the capsule (group II), and fixed after exposure of the patellofemoral joint to artificial patellar subluxation (group III). All rats were subdivided according to their joint immobilization period (1, 2, or 4 weeks). Thereafter, the limited range of motion of the knee joint with (limited knee range of motion) and without (limited knee joint intrinsic range of motion) skin and muscles were measured. The lengths of adhesions of the anterior knee joint and posterior capsules were evaluated histologically. The limited intrinsic range of motion of the knee joint was found to be increased in groups II and III compared to that in group I 4 weeks after immobilization. Adhesions were confirmed within 1 week after immobilization in groups II and III. The length of the adhesions in group III was significantly longer than in other groups at 2 weeks and remained longer than in group I at 4 weeks. This model may contribute to the assessment of the adhesion process and development of new therapeutic avenues following trauma or surgical invasion.
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Affiliation(s)
- Ryo Nakahara
- Department of Motor Function Analysis, Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan
- Japan Society for the Promotion of Science, Tokyo, Japan
| | - Akira Ito
- Department of Motor Function Analysis, Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Akihiro Nakahata
- Department of Motor Function Analysis, Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Momoko Nagai-Tanima
- Department of Motor Function Analysis, Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Hideki Kawai
- Department of Motor Function Analysis, Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan
- Japan Society for the Promotion of Science, Tokyo, Japan
| | - Kisara Uchiyama
- Department of Motor Function Analysis, Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Kohei Nishitani
- Department of Orthopaedic Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Tianshu Wang
- Department of Motor Function Analysis, Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Tomoki Aoyama
- Department of Motor Function Analysis, Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Hiroshi Kuroki
- Department of Motor Function Analysis, Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan
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Jeffs AD, Boyd M, Larabee L, Shelton M, Bassil A, Taylor R, Berkoff D. The role of leukotriene inhibition using a 5-lipoxygenase (5-LO) inhibitor in a joint contracture model. J Exp Orthop 2023; 10:64. [PMID: 37341811 DOI: 10.1186/s40634-023-00616-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2022] [Accepted: 05/05/2023] [Indexed: 06/22/2023] Open
Abstract
PURPOSE Arthrofibrosis is a common inflammatory complication of joint trauma and surgery. 5lipoxygenase (5-LO) is a key enzyme involved in inflammation. Inhibition of 5-LO has been shown to reduce inflammation in heart and lung models but has not been examined in a joint contracture model. METHODS Twenty-six rats underwent joint contracture. Six rats served as non-surgical controls. A 5-LO inhibitor, caffeic acid (CA), suspended in 10% ethanol was orally administered to 14 rats and ethanol without CA to the remaining 12 rats daily for 21 days. Leukotriene B4 (LTB4) levels were measured, both systemically and locally. 5-LO levels in the posterior capsule were quantified by measuring the ratio of the length of the posterior capsule demonstrating 5-LO immunostaining to the total length of the capsule. RESULTS Joint contracture was successfully achieved in all rats who underwent manipulation. Levels of 5- LO measured in the posterior capsule were significantly increased in the animals who underwent surgery (56%/44-64) compared to the non-surgical control animals (7%/4-9). LTB4 levels were found to be significantly lower in the non-surgical control animals (107.79 ± 34.08 pg/ml) compared to all surgical animals (157.6 ± 55.3 pg/ml). CONCLUSION Surgical intervention resulted in increased 5-LO activity of the synovial surface of the posterior capsule and increased LTB4 levels in the patellar tendon-fat pad. Oral administration of the 5LO inhibitor, CA, was ineffective at reducing systemic and local LTB4 levels and preventing knee joint contracture. Inhibiting 5-LO activity may still be effective in preventing arthrofibrosis and warrants further investigation.
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Affiliation(s)
- Alexander D Jeffs
- Department of Orthopaedics, The University of North Carolina, Chapel Hill, NC, USA.
| | - Michael Boyd
- Department of Orthopaedics, The University of North Carolina, Chapel Hill, NC, USA
- Department of Family Medicine, The University of North Carolina, Chapel Hill, NC, USA
| | - Landon Larabee
- The University of North Carolina School of Medicine, Chapel Hill, NC, USA
| | - Matthew Shelton
- The University of North Carolina School of Medicine, Chapel Hill, NC, USA
| | | | - Ross Taylor
- Wake Forest University School of Medicine, Winston Salem, NC, USA
| | - David Berkoff
- Department of Orthopaedics, The University of North Carolina, Chapel Hill, NC, USA
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3
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Retameiro ACB, Neves M, Tavares ALDF, Boaro CDT, Rodriguez DFS, Leal TSDS, Costa RM, Bertolini GRF, Ribeiro LDFC. Resistance exercise and low-level laser therapy improves grip strength and morphological aspects in the ankle joint of Wistar rats with experimental arthritis. Anat Rec (Hoboken) 2023; 306:918-932. [PMID: 36310376 DOI: 10.1002/ar.25112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 10/10/2022] [Accepted: 10/11/2022] [Indexed: 11/06/2022]
Abstract
Rheumatoid arthritis (RA) is an inflammatory disease mainly affecting synovial joints. Photobiomodulation through low-level laser therapy (LLLT) and resistance exercise may improve the inflammatory process. Therefore, we analyzed the effects of resistance exercise, LLLT, and the combination of both treatments on hind paw grip strength and ankle joint histomorphometric aspects of Wistar rats subjected to experimental RA. A total of 64 male Wistar rats were divided into eight groups: control, control LLLT, control exercise, control LLLT and exercise, arthritis, arthritis LLLT, arthritis exercise, and arthritis LLLT and exercise groups. The experimental RA was induced by a complete Freund's adjuvant injection into the knee joint cavity. Climbing exercises and LLLT (660 nm; 5 J/cm2 per point) were performed as the treatment. In addition, muscle strength was evaluated using the grip strength test, and morphometric evaluations were performed on the ankle joint. Generalized mixed models and multivariate analysis of variance tests were used for statistical analysis. Statistical significance was set at a p-value of .05. Arthritis LLLT, exercise, and LLLT and exercise had positive effects on grip strength between the groups (F[7.56] = 5.8, p < .004) and within the groups (F[4.3] = 9.9, p < .002) throughout the evaluations. Morphometry revealed degenerative lesions in the ankle joint as subintima with angiogenesis, inflammatory cells, flocculated articular cartilage, chondrocyte disorganization, and pannus in the arthritis group (p < .001). The treated groups exhibited morphological characteristics similar to those of the control group. LLLT and resistance exercise restored muscle strength and morphological aspects of the ankle joint in rats with experimentally induced RA.
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Affiliation(s)
| | - Morgana Neves
- Center of Biological and Health Sciences, State University of Western Paraná, Cascavel, Paraná, Brazil
| | | | - Carolina De Toni Boaro
- Center of Biological and Health Sciences, State University of Western Paraná, Cascavel, Paraná, Brazil
| | | | | | - Rose Meire Costa
- Center of Biological and Health Sciences, State University of Western Paraná, Cascavel, Paraná, Brazil
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4
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The effects of immobilization duration on joint contracture formation after anterior cruciate ligament reconstruction in rats. Clin Biomech (Bristol, Avon) 2023; 103:105926. [PMID: 36868150 DOI: 10.1016/j.clinbiomech.2023.105926] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 02/17/2023] [Accepted: 02/21/2023] [Indexed: 03/05/2023]
Abstract
BACKGROUND Both myogenic and arthrogenic factors contribute to contracture formation after anterior cruciate ligament reconstruction surgery. However, effects of immobilization duration on myogenic and arthrogenic contractures after surgery are unknown. We examined the effects of immobilization duration on contracture formation. METHODS Rats were divided into groups according to treatment received: untreated control, knee immobilization, anterior cruciate ligament reconstruction, and anterior cruciate ligament reconstruction plus immobilization. Extension range of motion before and after myotomy as well as histomorphological knee changes were assessed two or four weeks after experiment commencement. Range of motion before myotomy mainly represents contractures due to myogenic factors. Range of motion after myotomy represents arthrogenic factors. FINDINGS Range of motion before and after myotomy was decreased in the immobilization, reconstruction, and reconstruction plus immobilization groups at both timepoints. In the reconstruction plus immobilization group, range of motion before and after myotomy was significantly smaller than in the immobilization and reconstruction groups. Shortening and thickening of the posterior joint capsule was induced in the immobilization and reconstruction groups. In the reconstruction plus immobilization group, capsule shortening was facilitated via adhesion formation, as compared to the immobilization and reconstruction groups. INTERPRETATION Our results indicate that immobilization after anterior cruciate ligament reconstruction surgery facilitates contracture formation via exacerbation of both myogenic and arthrogenic contractures within two weeks. Capsule shortening would be one of the main mechanisms for severe arthrogenic contracture observed in the reconstruction plus immobilization group. Periods of joint immobilization after surgery should be minimized to reduce contracture.
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5
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Moore LK, Lee CS, Agha O, Liu M, Zhang H, Dang ABC, Dang A, Liu X, Feeley BT. A novel mouse model of hindlimb joint contracture with 3D-printed casts. J Orthop Res 2022; 40:2865-2872. [PMID: 35266583 DOI: 10.1002/jor.25313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 12/21/2021] [Accepted: 03/01/2022] [Indexed: 02/04/2023]
Abstract
Stiff joints formed after trauma, surgery or immobilization are frustrating for surgeons, therapists and patients alike. Unfortunately, the study of contracture is limited by available animal model systems, which focus on the utilization of larger mammals and joint trauma. Here we describe a novel mouse-based model system for the generation of joint contracture using 3D-printed clamshell casts. With this model system we are able to generate both reversible and irreversible contractures of the knee and ankle. Four- or 8-month-old female mice were casted for either 2 or 3 weeks before liberation. All groups formed measurable contractures of the knee and ankle. Younger mice immobilized for less time formed reversible contractures of the knee and ankle. We were able to generate irreversible contracture with either longer immobilization time or the utilization of older mice. The contracture formation translated into differences in gait, which were detectable using the DigiGait® analysis system. This novel model system provides a higher throughput, lower cost and more powerful tool in studying the molecular and cellular mechanisms considering the large existing pool of transgenic/knockout murine strains.
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Affiliation(s)
- Laura K Moore
- Department of Orthopedic Surgery, University of California San Francisco, San Francisco, California, USA
| | - Carlin S Lee
- Department of Orthopedic Surgery, San Francisco VA Medical Center, San Francisco, California, USA
| | - Obiajulu Agha
- Department of Orthopedic Surgery, University of California San Francisco, San Francisco, California, USA
| | - Mengyao Liu
- Department of Orthopedic Surgery, University of California San Francisco, San Francisco, California, USA.,Department of Orthopedic Surgery, San Francisco VA Medical Center, San Francisco, California, USA
| | - He Zhang
- Department of Orthopedic Surgery, University of California San Francisco, San Francisco, California, USA.,Department of Orthopedic Surgery, San Francisco VA Medical Center, San Francisco, California, USA.,Department of Exercise Physiology, Beijing Sport University, Beijing, China
| | - Alan B C Dang
- Department of Orthopedic Surgery, University of California San Francisco, San Francisco, California, USA.,Department of Orthopedic Surgery, San Francisco VA Medical Center, San Francisco, California, USA
| | - Alexis Dang
- Department of Orthopedic Surgery, University of California San Francisco, San Francisco, California, USA.,Department of Orthopedic Surgery, San Francisco VA Medical Center, San Francisco, California, USA
| | - Xuhui Liu
- Department of Orthopedic Surgery, San Francisco VA Medical Center, San Francisco, California, USA
| | - Brian T Feeley
- Department of Orthopedic Surgery, University of California San Francisco, San Francisco, California, USA.,Department of Orthopedic Surgery, San Francisco VA Medical Center, San Francisco, California, USA
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Kaneguchi A, Ozawa J. Inflammation and Fibrosis Induced by Joint Remobilization, and Relevance to Progression of Arthrogenic Joint Contracture: A Narrative Review. Physiol Res 2022. [DOI: 10.33549/physiolres.934876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Joint immobilization is frequently administered after fractures and ligament injuries and can cause joint contracture as a side effect. The structures responsible for immobilization-induced joint contracture can be roughly divided into muscular and articular. During remobilization, although myogenic contracture recovers spontaneously, arthrogenic contracture is irreversible or deteriorates further. Immediately after remobilization, an inflammatory response is observed, characterized by joint swelling, deposit formation in the joint space, edema, inflammatory cell infiltration, and the upregulation of genes encoding proinflammatory cytokines in the joint capsule. Subsequently, fibrosis in the joint capsule develops, in parallel with progressing arthrogenic contracture. The triggers of remobilization-induced joint inflammation are not fully understood, but two potential mechanisms are proposed: 1) micro-damage induced by mechanical stress in the joint capsule, and 2) nitric oxide (NO) production via NO synthase 2. Some interventions can modulate remobilization-induced inflammatory and subsequent fibrotic reactions. Anti-inflammatory treatments, such as steroidal anti-inflammatory drugs and low-level laser therapy, can attenuate joint capsule fibrosis and the progression of arthrogenic contracture in remobilized joints. Antiproliferative treatment using the cell-proliferation inhibitor mitomycin C can also attenuate joint capsule fibrosis by inhibiting fibroblast proliferation without suppressing inflammation. Conversely, aggressive exercise during the early remobilization phases is counterproductive, because it facilitates inflammatory and then fibrotic reactions in the joint. However, the adverse effects of aggressive exercise on remobilization-induced inflammation and fibrosis are offset by anti-inflammatory treatment. To prevent the progression of arthrogenic contracture during remobilization, therefore, care should be taken to control inflammatory and fibrotic reactions in the joints.
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Affiliation(s)
- A Kaneguchi
- Department of Rehabilitation, Faculty of Rehabilitation, Hiroshima International University, Hiroshima, Japan
| | - J Ozawa
- Department of Rehabilitation, Faculty of Rehabilitation, Hiroshima International University, Hiroshima, Japan.
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7
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Retameiro AC, Neves M, Tavares AL, Boaro CD, Rodriguez DF, Stein T, Costa RM, Bertolini GR, Ribeiro LF. Physical Exercise and Low-Level Laser Therapy Systemic Effects on the Ankle Joint in an Experimental Rheumatoid Arthritis Model. J Manipulative Physiol Ther 2022; 45:248-260. [DOI: 10.1016/j.jmpt.2022.07.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 07/06/2022] [Accepted: 07/13/2022] [Indexed: 10/14/2022]
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8
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Conflicting time-dependent effects of treadmill exercise on joint contracture after anterior cruciate ligament reconstruction in rats. Tissue Cell 2022; 77:101861. [DOI: 10.1016/j.tice.2022.101861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Revised: 06/21/2022] [Accepted: 06/21/2022] [Indexed: 11/21/2022]
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9
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Emmi A, Stocco E, Boscolo-Berto R, Contran M, Belluzzi E, Favero M, Ramonda R, Porzionato A, Ruggieri P, De Caro R, Macchi V. Infrapatellar Fat Pad-Synovial Membrane Anatomo-Fuctional Unit: Microscopic Basis for Piezo1/2 Mechanosensors Involvement in Osteoarthritis Pain. Front Cell Dev Biol 2022; 10:886604. [PMID: 35837327 PMCID: PMC9274201 DOI: 10.3389/fcell.2022.886604] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Accepted: 06/09/2022] [Indexed: 01/15/2023] Open
Abstract
The Infrapatellar Fat Pad (IFP) is a fibro-adipose tissue of the knee recently reconsidered as part of a single anatomo-functional unit (AFU) together with the synovial membrane (SM). Several evidence support the role of this unit in the mechanisms that trigger and perpetuate the onset and progression of osteoarthritis (OA) disease. Additionally, the contribution of IFP-SM AFU in OA-associated pain has also been supposed, but this assumption still needs to be fully elucidated. Within this context, the recent discovery of the mechanoceptive Piezo ion channels (i.e., Piezo1 and Piezo2) in mammals and consciousness on their role in mediating both mechanoceptive and inflammatory stimuli could shed some light on knee OA pain, as well as on the process leading from acute to chronic nociceptive responses. For this purpose, the IFP-SM AFUs of both healthy donors (non-OA IFP-SM AFUs, n = 10) and OA patients (OA IFP-SM AFUs, n = 10) were processed by histology and immunohistochemistry. After the attribution of a histopathological score to IFP-SM AFUs to confirm intrinsic differences between the two groups, the specimens were investigated for the expression and localization/distribution pattern of the mechanosensors Piezo1 and Piezo2. In addition, the presence of monocytes/macrophages (CD68), peripheral nerve endings (PGP9.5) and neoangiogenesis signs (YAP1) was evaluated for a broad tissue characterization. The study results lead to a better description of the IFP-SM AFU microscopic features in both healthy and pathological conditions, highlighting peculiar differences in the study cohort. Specifically, immunopositivity towards Piezo1/2, CD68 and YAP1 markers was detected at vessels level in the OA- IFP-SM AFUs compartments, differently from the non-OA-group. A correlation with pain was also inferred, paving the way for the identification of new and effective molecules in OA management.
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Affiliation(s)
- Aron Emmi
- Department of Neuroscience, Section of Human Anatomy, University of Padova, Padova, Italy
| | - Elena Stocco
- Department of Neuroscience, Section of Human Anatomy, University of Padova, Padova, Italy
| | - Rafael Boscolo-Berto
- Department of Neuroscience, Section of Human Anatomy, University of Padova, Padova, Italy
| | - Martina Contran
- Department of Neuroscience, Section of Human Anatomy, University of Padova, Padova, Italy
| | - Elisa Belluzzi
- Musculoskeletal Pathology and Oncology Laboratory, Department of Surgery, Oncology and Gastroenterology (DiSCOG), University of Padova, Padova, Italy
- Orthopedics and Orthopedic Oncology, Department of Surgery, Oncology and Gastroenterology (DiSCOG), University of Padova, Padova, Italy
| | - Marta Favero
- Rheumatology Unit, Department of Medicine-DIMED, University of Padova, Padova, Italy
- Internal Medicine I, Cà Foncello Hospital, Treviso, Italy
| | - Roberta Ramonda
- Musculoskeletal Pathology and Oncology Laboratory, Department of Surgery, Oncology and Gastroenterology (DiSCOG), University of Padova, Padova, Italy
| | - Andrea Porzionato
- Department of Neuroscience, Section of Human Anatomy, University of Padova, Padova, Italy
| | - Pietro Ruggieri
- Orthopedics and Orthopedic Oncology, Department of Surgery, Oncology and Gastroenterology (DiSCOG), University of Padova, Padova, Italy
| | - Raffaele De Caro
- Department of Neuroscience, Section of Human Anatomy, University of Padova, Padova, Italy
- *Correspondence: Raffaele De Caro,
| | - Veronica Macchi
- Department of Neuroscience, Section of Human Anatomy, University of Padova, Padova, Italy
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Inoue S, Moriyama H, Wakimoto Y, Li C, Hatakeyama J, Wakigawa T, Sakai Y, Akisue T. Transcutaneous application of carbon dioxide improves contractures after immobilization of rat knee joint. Phys Ther Res 2021; 23:113-122. [PMID: 33489648 DOI: 10.1298/ptr.e10023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Accepted: 03/13/2020] [Indexed: 12/19/2022]
Abstract
OBJECTIVE Joint contractures are a major complication following joint immobilization. However, no fully effective treatment has yet been found. Recently, carbon dioxide (CO2) therapy was developed and verified this therapeutic application in various disorders. We aimed to verify the efficacy of transcutaneous CO2 therapy for immobilization-induced joint contracture. METHOD Twenty-two Wistar rats were randomly assigned to three groups: caged control, those untreated after joint immobilization, and those treated after joint immobilization. The rats were treated with CO2 for 20 min once a daily either during immobilization, (prevention) or during remobilization after immobilization (treatment). Knee extension motion was measured with a goniometer, and the muscular and articular factors responsible for contractures were calculated. We evaluated muscle fibrosis, fibrosis-related genes (collagen Type 1α1 and TGF-β1) in muscles, synovial intima's length, and fibrosis-related proteins (Type I collagen and TGF-β1) in the joint capsules. RESULTS CO2 therapy for prevention and treatment improved the knee extension motion. Muscular and articular factors decreased in rats of the treatment group. The muscular fibrosis of treated rats decreased in the treatment group. Although CO2 therapy did not repress the increased expression of collagen Type 1α1, the therapy decreased the expression of TGF-β1 in the treatment group. CO2 therapy for treatment improved the shortening of the synovial membrane after immobilization and decreased the immunolabeling of TGF-β1 in the joint capsules. CONCLUSIONS CO2 therapy may prevent and treat contractures after joint immobilization, and appears to be more effective as a treatment strategy for the deterioration of contractures during remobilization.
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Affiliation(s)
- Shota Inoue
- Department of Rehabilitation Science, Graduate School of Health Sciences, Kobe University
| | - Hideki Moriyama
- Life and Medical Sciences Area, Health Sciences Discipline, Kobe University
| | - Yoshio Wakimoto
- Department of Rehabilitation Science, Graduate School of Health Sciences, Kobe University
| | - Changxin Li
- Department of Rehabilitation Science, Graduate School of Health Sciences, Kobe University
| | - Junpei Hatakeyama
- Department of Rehabilitation Science, Graduate School of Health Sciences, Kobe University
| | - Taisei Wakigawa
- Department of Rehabilitation Science, Graduate School of Health Sciences, Kobe University
| | - Yoshitada Sakai
- Division of Rehabilitation Medicine, Kobe University Graduate School of Medicine
| | - Toshihiro Akisue
- Life and Medical Sciences Area, Health Sciences Discipline, Kobe University
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11
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Wang X, Tu J, Jiang J, Zhang Q, Liu Q, Körner H, Wu J, Wu H, Wei W. Angiotensin II Type 2 Receptor Modulates Synovial Macrophage Polarization by Inhibiting GRK2 Membrane Translocation in a Rat Model of Collagen-Induced Arthritis. THE JOURNAL OF IMMUNOLOGY 2020; 205:3141-3153. [PMID: 33148713 DOI: 10.4049/jimmunol.2000561] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Accepted: 09/23/2020] [Indexed: 01/15/2023]
Abstract
The chronic inflammatory autoimmune disease rheumatoid arthritis (RA) is characterized by an infiltration of activated proinflammatory immune cells into the joint that is accompanied by an overproduction of various mediators, leading to destruction of cartilage and bone erosion. Angiotensin II type 2 receptor (AT2R) is involved in antioxidative, anti-inflammatory, and antifibrotic responses. Synovial macrophages (SMs) are a type of tissue macrophages that are derived from bone marrow cells. SMs plays a central role in synovial regional immunization, which is significantly increased in both collagen-induced mice with arthritis mice and RA patients. AT2R activation caused a reversal of the polarization of SMs in the joint from the proinflammatory M1 SM to the tolerogenic, benign M2 SM. In consequence, this switch resulted in an attenuated form of the joint pathology in a rat model of collagen-induced arthritis. These results were mechanistically linked to the observation that GRK2 was translocated into cytoplasm, and ERK1/2 and NF-κB activation were inhibited. These findings open the way to a new therapeutic approach using an activation of AT2R to subvert joint inflammation in RA.
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Affiliation(s)
- Xinming Wang
- Institute of Clinical Pharmacology, Anhui Medical University, Key Laboratory of Anti-inflammatory and Immune Medicine, Ministry of Education, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Hefei, Anhui 230032, China; and.,Department of Pharmacy, First Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230022, China
| | - Jiajie Tu
- Institute of Clinical Pharmacology, Anhui Medical University, Key Laboratory of Anti-inflammatory and Immune Medicine, Ministry of Education, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Hefei, Anhui 230032, China; and
| | - Ji Jiang
- Institute of Clinical Pharmacology, Anhui Medical University, Key Laboratory of Anti-inflammatory and Immune Medicine, Ministry of Education, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Hefei, Anhui 230032, China; and
| | - Qiaolin Zhang
- Institute of Clinical Pharmacology, Anhui Medical University, Key Laboratory of Anti-inflammatory and Immune Medicine, Ministry of Education, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Hefei, Anhui 230032, China; and
| | - Qi Liu
- Institute of Clinical Pharmacology, Anhui Medical University, Key Laboratory of Anti-inflammatory and Immune Medicine, Ministry of Education, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Hefei, Anhui 230032, China; and
| | - Heinrich Körner
- Institute of Clinical Pharmacology, Anhui Medical University, Key Laboratory of Anti-inflammatory and Immune Medicine, Ministry of Education, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Hefei, Anhui 230032, China; and
| | - Jingjing Wu
- Institute of Clinical Pharmacology, Anhui Medical University, Key Laboratory of Anti-inflammatory and Immune Medicine, Ministry of Education, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Hefei, Anhui 230032, China; and
| | - Huaxun Wu
- Institute of Clinical Pharmacology, Anhui Medical University, Key Laboratory of Anti-inflammatory and Immune Medicine, Ministry of Education, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Hefei, Anhui 230032, China; and
| | - Wei Wei
- Institute of Clinical Pharmacology, Anhui Medical University, Key Laboratory of Anti-inflammatory and Immune Medicine, Ministry of Education, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Hefei, Anhui 230032, China; and
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12
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Mechanical adaptation of synoviocytes A and B to immobilization and remobilization: a study in the rat knee flexion model. J Mol Histol 2020; 51:605-611. [PMID: 32778991 DOI: 10.1007/s10735-020-09902-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Accepted: 07/29/2020] [Indexed: 10/23/2022]
Abstract
The objective of this study was to quantify the in vivo response of synoviocytes type A and B in the posterior joint capsule to knee immobilization and remobilization. Also, to correlate the immunohistochemical data with selected mRNA expression in the posterior joint capsule. Forty-two adult male Sprague-Dawley rats had one knee joint immobilized in flexion for durations of 1-4 weeks. Fifteen were harvested after immobilization and 15 were remobilized for 4 weeks. They were analyzed immunohistochemically with CD68 and CD55 antibodies as markers for synoviocytes type A and type B, respectively. Controls were 15 age-matched rats. The remaining 12 rats had their posterior capsule harvested and synoviocyte-specific CD68, CD55, and uridine diphosphoglucose dehydrogenase (UDPGD) mRNA expression was measured. Controls were 12 sham-operated knees. Knee immobilization for 2 weeks significantly increased synoviocytes A:B staining ratio compared to controls (3.88 ± 1.39 vs. 1.83 ± 0.76; p < 0.05). Remobilization for 4 weeks abolished the increase. Remobilization of knees that were immobilized for 1 week also significantly lowered the synoviocytes A:B staining ratios compared to immobilized-only knees (0.66 ± 0.23 vs. 2.19 ± 0.54; p < 0.05) and to controls (0.66 ± 0.23 vs. 1.32 ± 0.29; p < 0.05). Consistent with the immunohistochemistry, mRNA expression of synoviocyte type B-specific CD55 and UDPGD genes were significantly lower in the capsules immobilized for 2 weeks (both p < 0.05). Knee immobilization and remobilization significantly modulated synoviocytes in vivo, stressing their mechanosensitive nature and possible contribution to immobility-induced changes of the joint capsule.
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Hermawan N, Fujiwara M, Hagiwara Y, Saijo Y. Visualization of Shoulder Ligaments Motion by Ultrasound Speckle Tracking Method . ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2020; 2020:2084-2087. [PMID: 33018416 DOI: 10.1109/embc44109.2020.9176374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
There is no unified consensus on the pathophysiology of adhesive capsulitis which is also called as frozen shoulder. Some studies have suggested that coracohumeral ligament (CHL) played an important role in adhesive capsulitis. These studies showed relation between disease prevalence and CHL thickness by means of ultrasound or MRI. Other possible etiology of the disease is the adhesion of shoulder ligament with each other. In the present study, shoulder ligaments motion is visualized with velocity vector by speckle tracking and temporal outlier removal algorithm to process ultrasound movie during forced movement of shoulder joint. The measurement with a typical subject has demonstrated an improvement of velocity vector deviation of up to 43% by the proposed outlier removal technique.
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Wang MM, Feng YS, Xing Y, Dong F, Zhang F. Mechanisms involved in the arthrofibrosis formation and treatments following bone fracture. J Back Musculoskelet Rehabil 2020; 32:947-954. [PMID: 31403938 DOI: 10.3233/bmr-191499] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Arthrofibrosis is a common complication for patients with bone fracture following external and internal fixation. In this review, we summarize the related factors and significant pathways for joint adhesion following fracture surgery. Moreover, the different types of treatments and related preventive measures are also discussed. Many factors related to the development and treatment of arthrofibrosis are discussed in this review in order to provide possible clues for the prospective targets to develop new medication or treatments for preventing or reducing the joint adhesion following orthopedic surgery.
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Affiliation(s)
- Man-Man Wang
- Department of Rehabilitation Medicine, The Third Hospital of Hebei Medical University, Shijiazhuang, Hebei 050051, China
| | - Ya-Shuo Feng
- Department of Rehabilitation Medicine, The Third Hospital of Hebei Medical University, Shijiazhuang, Hebei 050051, China
| | - Ying Xing
- Department of Rehabilitation Medicine, The Third Hospital of Hebei Medical University, Shijiazhuang, Hebei 050051, China
| | - Fang Dong
- Department of Clinical Laboratory Medicine, The Third Hospital of Hebei Medical University, Shijiazhuang, Hebei 050051, China
| | - Feng Zhang
- Department of Rehabilitation Medicine, The Third Hospital of Hebei Medical University, Shijiazhuang, Hebei 050051, China.,Hebei Provincial Orthopedic Biomechanics key laboratory, The Third Hospital of Hebei Medical University, Shijiazhuang, Hebei 050051, China
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Effects of Immobilization and Re-Mobilization on Knee Joint Arthrokinematic Motion Quality. J Clin Med 2020; 9:jcm9020451. [PMID: 32041248 PMCID: PMC7074294 DOI: 10.3390/jcm9020451] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Revised: 01/18/2020] [Accepted: 02/05/2020] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND Knee immobilization is a common intervention for patients with traumatic injuries. However, it usually leads to biomechanical/morphological disturbances of articular tissues. These changes may contribute to declining kinetic friction-related quality of arthrokinematics; however, this phenomenon has not been analyzed in vivo and remains unrecognized. Thus, the aim of the present study is to investigate the effect of immobilization and subsequent re-mobilization on the quality of arthrokinematics within the patellofemoral joint, analyzed by vibroarthrography (VAG). METHODS Thirty-four patients after 6-weeks of knee immobilization and 37 controls were analyzed. The (VAG) signals were collected during knee flexion/extension using an accelerometer. Patients were tested on the first and last day of the 2-week rehabilitation program. RESULTS Immobilized knees were characterized by significantly higher values of all VAG parameters when compared to controls (p < 0.001) on the first day. After 2 weeks, the participants in the rehabilitation program that had immobilized knees showed significant improvement in all measurements compared to the baseline condition, p < 0.05. However, patients did not return to normal VAG parameters compared to controls. CONCLUSION Immobilization-related changes within the knee cause impairments of arthrokinematic function reflected in VAG signal patterns. The alterations in joint motion after 6 weeks of immobilization may be partially reversible; however, the 2-week physiotherapy program is not sufficient for full recovery.
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Takahashi I, Matsuzaki T, Kuroki H, Hoso M. Disuse histological changes of an unloading environment on joint components in rat knee joints. OSTEOARTHRITIS AND CARTILAGE OPEN 2019; 1:100008. [DOI: 10.1016/j.ocarto.2019.100008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Accepted: 10/30/2019] [Indexed: 01/01/2023] Open
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Abstract
BACKGROUND Joint contractures are a major complication in patients with spinal cord injuries. Positioning, stretching, and physical therapy are advocated to prevent and treat contractures; however, many patients still develop them. Joint motion (exercise) is crucial to correct contractures. Transcutaneous carbon dioxide (CO2) therapy was developed recently, and its effect is similar to that of exercise. This therapy may be an alternative or complementary approach to exercise. QUESTION/PURPOSES Using an established model of spinal cord injury in rats with knee flexion contractures, we sought to clarify whether transcutaneous CO2 altered (1) contracture, as measured by ROM; (2) muscular and articular factors contributing to the loss of ROM; (3) fibrosis and fibrosis-related gene expression in muscle; and (4) the morphology of and fibrosis-related protein expression in the joint capsule. METHODS Thirty-six Wistar rats were divided into three equal groups: caged control, those untreated after spinal cord injury, and those treated with CO2 after spinal cord injury. The rats were treated with CO2 from either the first day (prevention) or 15th day (treatment) after spinal cord injury for 2 or 4 weeks. The hindlimbs of rats in the treated group were exposed to CO2 gas for 20 minutes once daily. Knee extension ROM was measured with a goniometer and was measured again after myotomy. We calculated the muscular and articular factors responsible for contractures by subtracting the post-myotomy ROM from that before myotomy. We also quantified histologic muscle fibrosis and evaluated fibrosis-related genes (collagen Type 1, α1 and transforming growth factor beta) in the biceps femoris muscle with real-time polymerase chain reaction. The synovial intima's length was measured, and the distribution of fibrosis-related proteins (Type I collagen and transforming growth factor beta) in the joint capsule was observed with immunohistochemistry. Knee flexion contractures developed in rats after spinal cord injuries at all timepoints. RESULTS CO2 therapy improved limited-extension ROM in the prevention group at 2 weeks (22° ± 2°) and 4 weeks (29° ± 1°) and in the treatment group at 2 weeks (31° ± 1°) compared with untreated rats after spinal cord injuries (35° ± 2°, mean difference, 13°; 39° ± 1°, mean difference, 9°; and 38° ± 1°, mean difference, 7°, respectively) (95% CI, 10.50-14.86, 8.10-10.19, and 4.73-9.01, respectively; all p < 0.001). Muscular factors decreased in treated rats in the prevention group at 2 weeks (8° ± 2°) and 4 weeks (14°± 1°) and in the treatment group at 2 weeks (14 ± 1°) compared with untreated rats (15° ± 1°, 4.85-9.42; 16° ± 1°, 1.24-3.86; and 17° ± 2°, 1.16-5.34, respectively; all p < 0.05). The therapy improved articular factors in the prevention group at 2 weeks (4° ± 1°) and 4 weeks (6° ± 1°) and in the treatment group at 2 weeks (8° ± 1°) compared with untreated rats (10° ± 1°, 4.05-7.05; 12° ± 1°, 5.18-8.02; and 11° ± 2°, 1.73-5.50, respectively; all p < 0.05). CO2 therapy decreased muscle fibrosis in the prevention group at 2 weeks (p < 0.001). The expression of collagen Type 1, α1 mRNA in the biceps femoris decreased in treated rats in the prevention group at 2 and 4 weeks compared with untreated rat (p = 0.002 and p = 0.008, respectively), although there was little difference in the expression of transforming growth factor beta (p > 0.05). CO2 therapy did not improve shortening of the synovial intima at all timepoints (all p > 0.05). CO2 therapy decreased transforming growth factor beta immunolabeling in joint capsules in the rats in the prevention group at 2 weeks. The staining intensity and Type I collagen pattern showed no differences among all groups at all timepoints. CONCLUSION CO2 therapy may be useful for preventing and treating contractures after spinal cord injuries. CO2 therapy particularly appears to be more effective as a prevention and treatment strategy in early-stage contractures before irreversible degeneration occurs, as shown in a rat model. CLINICAL RELEVANCE Our findings support the idea that CO2 therapy may be able to improve the loss of ROM after spinal cord injury.
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Baranowski A, Schlemmer L, Förster K, Slotina E, Mickan T, Truffel S, Klein A, Mattyasovszky SG, Hofmann A, Ritz U, Rommens PM. Effects of losartan and atorvastatin on the development of early posttraumatic joint stiffness in a rat model. Drug Des Devel Ther 2019; 13:2603-2618. [PMID: 31440039 PMCID: PMC6679684 DOI: 10.2147/dddt.s204135] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Accepted: 06/27/2019] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND After a trauma, exuberant tissue healing with fibrosis of the joint capsule can lead to posttraumatic joint stiffness (PTJS). Losartan and atorvastatin have both shown their antifibrotic effects in different organ systems. OBJECTIVE The purpose of this study was the evaluation of the influence of losartan and atorvastatin on the early development of joint contracture. In addition to joint angles, the change in myofibroblast numbers and the distribution of bone sialoprotein (BSP) were assessed. STUDY DESIGN AND METHODS In this randomized and blinded experimental study with 24 rats, losartan and atorvastatin were compared to a placebo. After an initial joint injury, rat knees were immobilized with a Kirschner wire. Rats received either losartan, atorvastatin or a placebo orally daily. After 14 days, joint angle measurements and histological assessments were performed. RESULTS Losartan increased the length of the inferior joint capsule. Joint angle and other capsule length measurements did not reveal significant differences between both drugs and the placebo. At cellular level both losartan and atorvastatin reduced the total number of myofibroblasts (losartan: 191±77, atorvastatin: 98±58, placebo: 319±113 per counting field, p<0.01) and the percentage area of myofibroblasts (losartan: 2.8±1.8% [p<0.05], atorvastatin: 2.5±1.7% [p<0.01], vs control [6.4±4%], respectively). BSP was detectable in equivalent amounts in the joint capsules of all groups with only a trend toward a reduction of the BSP-stained area by atorvastatin. CONCLUSION Both atorvastatin and losartan reduced the number of myofibroblasts in the posterior knee joint capsule of rat knees 2 weeks after trauma and losartan increased the length of the inferior joint capsule. However, these changes at the cellular level did not translate an increase in range of motion of the rats´ knee joints during early contracture development.
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Affiliation(s)
- Andreas Baranowski
- Department of Orthopaedics and Traumatology, Biomatics Group, University Medical Centre of the Johannes Gutenberg University, Mainz, Germany
| | - Ludwig Schlemmer
- Department of Orthopaedics and Traumatology, Biomatics Group, University Medical Centre of the Johannes Gutenberg University, Mainz, Germany
| | - Katharina Förster
- Department of Orthopaedics and Traumatology, Biomatics Group, University Medical Centre of the Johannes Gutenberg University, Mainz, Germany
| | - Ekaterina Slotina
- Department of Orthopaedics and Traumatology, Biomatics Group, University Medical Centre of the Johannes Gutenberg University, Mainz, Germany
| | - Tim Mickan
- Department of Orthopaedics and Traumatology, Biomatics Group, University Medical Centre of the Johannes Gutenberg University, Mainz, Germany
| | - Sebastian Truffel
- Department of Orthopaedics and Traumatology, Biomatics Group, University Medical Centre of the Johannes Gutenberg University, Mainz, Germany
| | - Anja Klein
- Department of Orthopaedics and Traumatology, Biomatics Group, University Medical Centre of the Johannes Gutenberg University, Mainz, Germany
| | - Stefan G Mattyasovszky
- Department of Orthopaedics and Traumatology, Biomatics Group, University Medical Centre of the Johannes Gutenberg University, Mainz, Germany
| | - Alexander Hofmann
- Department of Orthopaedics and Traumatology, Biomatics Group, University Medical Centre of the Johannes Gutenberg University, Mainz, Germany
- Department of Traumatology and Orthopaedics 1, Westpfalz-Medical Centre Kaiserslautern, Kaiserslautern, Germany
| | - Ulrike Ritz
- Department of Orthopaedics and Traumatology, Biomatics Group, University Medical Centre of the Johannes Gutenberg University, Mainz, Germany
| | - Pol M Rommens
- Department of Orthopaedics and Traumatology, Biomatics Group, University Medical Centre of the Johannes Gutenberg University, Mainz, Germany
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Moriyama H, Ozawa J, Yakuwa T, Inoue S, Wakigawa T, Kito N, Sakai Y, Akisue T. Effects of hypertonia on contracture development in rat spinal cord injury. Spinal Cord 2019; 57:850-857. [PMID: 31201373 DOI: 10.1038/s41393-019-0312-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2019] [Revised: 06/02/2019] [Accepted: 06/03/2019] [Indexed: 11/09/2022]
Abstract
STUDY DESIGN Experimental animal study. OBJECTIVES Spastic hypertonia is originally believed to cause contractures from clinical observations. Botulinum toxin is effective for the treatment of spasticity and is widely used in patients who have joints with contractures. Using an established rat model with knee contractures after spinal cord injuries, we aimed to verify whether hypertonia contributes to contracture development, and the botulinum toxin improves structural changes in muscles and joint components responsible for contractures. SETTING University laboratory in Japan. METHODS To evaluate the effect of hypertonia on contracture development, the rats received botulinum toxin injections after spinal cord injuries. Knee extension motion was measured with a goniometer applying a standardized torque under anesthesia, and the contribution by muscle or non-muscle structures to contractures were calculated by measuring joint motion before and after the myotomies. We quantitatively measured the muscle atrophy, muscle fibrosis, and synovial intima length. RESULTS Botulinum toxin injections significantly improved contractures, whereas did not completely prevent contracture development. Botulinum toxin was effective in improving the muscular factor, but little difference in the articular factor. Spinal cord injuries induced muscle atrophy, and botulinum toxin significantly accelerated muscle atrophy and fibrosis. The synovial intima length decreased significantly after spinal cord injuries, and botulinum toxin did not improve this shortening. CONCLUSIONS This animal study provides new evidence that hypertonia is not the sole cause rather is the partial contributor of contractures after spinal cord injuries. Furthermore, botulinum toxin has adverse effects in the muscle.
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Affiliation(s)
- Hideki Moriyama
- Life and Medical Sciences Area, Health Sciences Discipline, Kobe University, Kobe, Japan.
| | - Junya Ozawa
- Department of Rehabilitation, Faculty of Rehabilitation, Hiroshima International University, Higashi-Hiroshima, Japan
| | - Takumi Yakuwa
- Department of Rehabilitation Science, Graduate School of Health Sciences, Kobe University, Kobe, Japan
| | - Shota Inoue
- Department of Rehabilitation Science, Graduate School of Health Sciences, Kobe University, Kobe, Japan
| | - Taisei Wakigawa
- Faculty of Health Sciences, School of Medicine, Kobe University, Kobe, Japan
| | - Nobuhiro Kito
- Department of Rehabilitation, Faculty of Rehabilitation, Hiroshima International University, Higashi-Hiroshima, Japan
| | - Yoshitada Sakai
- Division of Rehabilitation Medicine, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Toshihiro Akisue
- Life and Medical Sciences Area, Health Sciences Discipline, Kobe University, Kobe, Japan
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Li H, Liu P, Gong Y, Liu J, Ruan F. Expression and function of miR-155 in rat synovial fibroblast model of rheumatoid arthritis. Exp Ther Med 2019; 18:786-792. [PMID: 31258713 DOI: 10.3892/etm.2019.7581] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Accepted: 03/01/2018] [Indexed: 12/18/2022] Open
Abstract
Rheumatoid arthritis (RA) is a common autoimmune disease characterized by joint synovial inflammation and is a challenge for researchers and clinicians. MicroRNAs (miRNAs/miRs) represent a group of small non-coding RNA molecules that post-transcriptionally regulate mRNA expression and are involved in various diseases, including cancer, autoimmune and metabolic diseases, as well as neurological disorders. In the present study, various experiments were performed to investigate the effects and underlying mechanism of miR-155 in RA using rat synoviocytes induced by lipopolysaccharide (LPS) to model rheumatoid arthritis. It was revealed that synovial fibroblasts exhibited significantly higher miR-155 mRNA levels than the control group. Compared with the RA group, the viability of synovial fibroblasts was significantly decreased in the miR-155 mimics + RA group, but markedly increased in the miR-155 inhibitor + RA group. Compared with that in the RA + NC mimic or RA + NC inhibitor groups, the apoptosis of synovial fibroblasts increased significantly in the miR-155 mimics + RA group, but was significantly decreased in the miR-155 inhibitor + RA group. The miR-155 mimics + RA group exhibited higher expression levels of β-catenin, matrix metalloproteinase 7 and cyclin D1 compared with the miR-155 inhibitor + RA group, and the glycogen synthase kinase protein levels was lower compared with the miR-155 inhibitor + RA group. In brief, it was inferred that the Wnt signaling pathway is involved in the miR-155-associated inhibition of RA synovial fibroblast viability and induction of cell apoptosis. Inhibition of miR-155 may be an effective treatment for RA through regulation of the Wnt signaling pathway to reduce cell apoptosis and enhance cell viability.
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Affiliation(s)
- Hewei Li
- Department of Orthopedics, Liyuan Hospital Affiliated to Tongji Medical College of Huazhong University of Science and Technology, Wuhan, Hubei 430077, P.R. China
| | - Ping Liu
- Department of Orthopedics, Liyuan Hospital Affiliated to Tongji Medical College of Huazhong University of Science and Technology, Wuhan, Hubei 430077, P.R. China
| | - Yanlin Gong
- Department of Endocrinology, Wuhan No. 1 Hospital, Wuhan, Hubei 430022, P.R. China
| | - Jiali Liu
- Department of Orthopedics, Liyuan Hospital Affiliated to Tongji Medical College of Huazhong University of Science and Technology, Wuhan, Hubei 430077, P.R. China
| | - Feng Ruan
- Department of Orthopedics, Liyuan Hospital Affiliated to Tongji Medical College of Huazhong University of Science and Technology, Wuhan, Hubei 430077, P.R. China
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ZHOU HAODONG, TRUDEL GUY, UHTHOFF HANSK, LANEUVILLE ODETTE. Range of Extension Correlates with Posterior Capsule Length after Knee Remobilization. Med Sci Sports Exerc 2018; 50:2401-2408. [DOI: 10.1249/mss.0000000000001741] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Anti-inflammatory Drug Dexamethasone Treatment During the Remobilization Period Improves Range of Motion in a Rat Knee Model of Joint Contracture. Inflammation 2018; 41:1409-1423. [DOI: 10.1007/s10753-018-0788-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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Itaya N, Yabe Y, Hagiwara Y, Kanazawa K, Koide M, Sekiguchi T, Yoshida S, Sogi Y, Yano T, Tsuchiya M, Saijo Y, Itoi E. Effects of Low-Intensity Pulsed Ultrasound for Preventing Joint Stiffness in Immobilized Knee Model in Rats. ULTRASOUND IN MEDICINE & BIOLOGY 2018; 44:1244-1256. [PMID: 29573888 DOI: 10.1016/j.ultrasmedbio.2018.02.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Revised: 01/30/2018] [Accepted: 02/03/2018] [Indexed: 06/08/2023]
Abstract
The purpose of this study was to examine the effect of low-intensity pulsed ultrasound (LIPUS) in preventing joint stiffness. Unilateral knee joints were immobilized in two groups of rats (n = 6/period/group). Under general anesthesia, the immobilized knee joints were exposed to LIPUS for 20 min/d, 5 d/wk, using an existing LIPUS device (LIPUS group, 1.5-MHz frequency, 1.0-kHz repetition cycle, 200-µs burst width and 30-mW/cm2 power output) until endpoints (2, 4 or 6 wk). In the control group, general anesthesia alone was administered in the same manner as in the other group. The variables compared between the groups included joint angles; histologic, histomorphometric and immunohistochemical analyses; quantitative reverse transcription polymerase chain reactions; and tissue elasticity. LIPUS had a preventive effect on joint stiffness, resulting in decreased adhesion, fibrosis and inflammation and hypoxic response after joint immobilization.
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Affiliation(s)
- Nobuyuki Itaya
- Department of Orthopaedic Surgery, Tohoku University School of Medicine, Aoba-ku, Sendai, Japan
| | - Yutake Yabe
- Department of Orthopaedic Surgery, Tohoku University School of Medicine, Aoba-ku, Sendai, Japan
| | - Yoshihiro Hagiwara
- Department of Orthopaedic Surgery, Tohoku University School of Medicine, Aoba-ku, Sendai, Japan.
| | - Kenji Kanazawa
- Department of Orthopaedic Surgery, Iwate Prefectural Central Hospital, Morioka, Iwate, Japan
| | - Masashi Koide
- Department of Orthopaedic Surgery, Matsuda Hospital, Izumi-ku, Sendai, Japan
| | - Takuya Sekiguchi
- Department of Orthopaedic Surgery, Tohoku University School of Medicine, Aoba-ku, Sendai, Japan
| | - Shinichirou Yoshida
- Department of Orthopaedic Surgery, Tohoku University School of Medicine, Aoba-ku, Sendai, Japan
| | - Yasuhito Sogi
- Department of Orthopaedic Surgery, Tohoku University School of Medicine, Aoba-ku, Sendai, Japan
| | - Toshihisa Yano
- Department of Orthopaedic Surgery, Tohoku University School of Medicine, Aoba-ku, Sendai, Japan
| | | | - Yoshihumi Saijo
- Department of Biomedical Imaging, Tohoku University Graduate School of Biomedical Engineering, Aoba-ku, Sendai, Japan
| | - Eiji Itoi
- Department of Orthopaedic Surgery, Tohoku University School of Medicine, Aoba-ku, Sendai, Japan
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Ozawa J, Kaneguchi A, Minamimoto K, Tanaka R, Kito N, Moriyama H. Accumulation of advanced-glycation end products (AGEs) accelerates arthrogenic joint contracture in immobilized rat knee. J Orthop Res 2018; 36:854-863. [PMID: 28862361 DOI: 10.1002/jor.23719] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/19/2017] [Accepted: 08/29/2017] [Indexed: 02/04/2023]
Abstract
Joint mobility decreases in the elderly and in diabetics, this process is thought to be caused by accumulation of advanced-glycation end products (AGEs). Here, we aimed to elucidate the role of AGEs in joint contracture formation in rat knees. Rats were injected with ribose or saline into the knees twice weekly for 8 weeks. Pentosidine (AGE) levels were measured in the knee-joint tissues. After serial injections, rats were subjected to unilateral knee-joint immobilization in a flexion position for various periods. At day 21, the passive knee ranges of motions (ROMs) were measured. Knee joint histopathology were assessed, and the expression of fibrotic genes in the posterior joint capsules was examined using real-time PCR. Ribose injection induced a 7.0-fold increase in pentosidine levels relative to saline injection. Joint immobilization resulted in equal myogenic ROM restriction in both groups. Arthrogenic ROM restriction was greater with ribose injection in the immobilized joints (p < 0.05), but was not affected in nonimmobilized joints. Type-I (COL1A1) and type-III (COL3A1) collagen gene expression increased significantly in immobilized joints relative to nonimmobilized joints in the ribose group, but was not affected in the saline group. Ribose injection increased COL1A1 expression slightly and COL3A1 expression significantly in immobilized joints. Histologically, inflammatory changes appeared at day 3 of immobilization and peaked at day 7. These responses trended to be more severe and prolonged in the ribose group than in the saline group. Our data provide evidence for a causal relationship between AGEs and joint contracture formation following immobilization. © 2017 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 36:854-863, 2018.
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Affiliation(s)
- Junya Ozawa
- Faculty of Rehabilitation, Department of Rehabilitation, Hiroshima International University, Kurose-Gakuendai 555-36, Higashi-Hiroshima, Hiroshima, Japan
| | - Akinori Kaneguchi
- Department of Rehabilitation, Mori Orthopaedic Clinic, 1-3-16, Hikarimachi, Higashi-Ku Hiroshima, Hiroshima, Japan
| | - Kengo Minamimoto
- Faculty of Rehabilitation, Department of Rehabilitation, Hiroshima International University, Kurose-Gakuendai 555-36, Higashi-Hiroshima, Hiroshima, Japan
| | - Ryo Tanaka
- Faculty of Rehabilitation, Department of Rehabilitation, Hiroshima International University, Kurose-Gakuendai 555-36, Higashi-Hiroshima, Hiroshima, Japan
| | - Nobuhiro Kito
- Faculty of Rehabilitation, Department of Rehabilitation, Hiroshima International University, Kurose-Gakuendai 555-36, Higashi-Hiroshima, Hiroshima, Japan
| | - Hideki Moriyama
- Department of Rehabilitation Science, Graduate School of Health Sciences, Kobe University, Tomogaoka 7-10-2, Suma-ku, Kobe, Hyogo, Japan
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Kaneguchi A, Ozawa J, Minamimoto K, Yamaoka K. Active exercise on immobilization-induced contractured rat knees develops arthrogenic joint contracture with pathological changes. J Appl Physiol (1985) 2018; 124:291-301. [DOI: 10.1152/japplphysiol.00438.2017] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
This study investigated the effects of treadmill walking during remobilization on range of motion (ROM) and histopathology in rat knee joints, which were immobilized for 3 wk in a flexed position. After fixator removal, rats were divided into a no-intervention (RM) group and a group forced to walk on a treadmill daily at 12 m/min for 60 min (WALK group). Passive knee extension ROMs were measured before (m-ROM) and after (a-ROM) knee flexor myotomy on the first and last day of a 7-day remobilization period, with m-ROM mainly reflecting myogenic factors and a-ROM reflecting arthrogenic factors. Knee joints were histologically analyzed and gene expression of inflammatory or fibrosis-related mediators in the posterior joint capsule were examined. m-ROM and a-ROM restrictions were established after immobilization. m-ROM significantly increased following the remobilization period both in RM and WALK groups compared with that of immobilized (IM) group. Conversely, a-ROM decreased following the remobilization period in both RM and WALK groups compared with that of IM group. Importantly, a-ROM was smaller in the WALK group than the RM group. Remobilization without intervention induced inflammatory and fibrotic reactions in the posterior joint capsule after 1 and 7 days. Treadmill walking promoted these reactions and also increased the expression of fibrosis-related TGF-β1 and collagen type I and III genes. While free movement after immobilization improved myogenic contracture, arthrogenic contracture worsened. Treadmill walking further aggravated arthrogenic contracture through amplified inflammatory and fibrotic reactions. Thus active exercise immediately after immobilization may not improve immobilization-induced joint contracture. NEW & NOTEWORTHY In clinical practice, it is widely accepted that facilitation of joint movements is effective in improving immobilization-induced joint contracture. However, whether active exercises improve arthrogenic contracture is not known. In this study, we revealed that treadmill walking further promoted remobilization-induced progression of arthrogenic contracture. To our knowledge, this is the first study demonstrating no favorable effect of active exercise on immobilization-induced arthrogenic contracture.
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Affiliation(s)
- Akinori Kaneguchi
- Department of Rehabilitation, Mori Orthopaedic Clinic, Hiroshima, Japan
| | - Junya Ozawa
- Department of Rehabilitation, Faculty of Rehabilitation, Hiroshima International University, Hiroshima, Japan
| | - Kengo Minamimoto
- Major in Medical Engineering and Technology, Graduate School of Medical Technology and Health Welfare Sciences, Hiroshima International University, Hiroshima, Japan
| | - Kaoru Yamaoka
- Department of Rehabilitation, Faculty of Rehabilitation, Hiroshima International University, Hiroshima, Japan
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Sasabe R, Sakamoto J, Goto K, Honda Y, Kataoka H, Nakano J, Origuchi T, Endo D, Koji T, Okita M. Effects of joint immobilization on changes in myofibroblasts and collagen in the rat knee contracture model. J Orthop Res 2017; 35:1998-2006. [PMID: 27918117 DOI: 10.1002/jor.23498] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Accepted: 11/16/2016] [Indexed: 02/04/2023]
Abstract
The purpose of this study was to examine the time-dependent changes in the development of joint capsule fibrosis and in the number of myofibroblasts in the joint capsule after immobilization, using a rat knee contracture model. Both knee joints were fixed in full flexion for 1, 2, and 4 weeks (immobilization group). Untreated rats were bred for each immobilization period (control group). Histological analysis was performed to evaluate changes in the amount and density of collagen in the joint capsule. The changes in type I and III collagen mRNA were examined by in situ hybridization. The number of myofibroblasts in the joint capsule was assessed by immunohistochemical methods. In the immobilization group, the amount of collagen increased within 1 week and the density of collagen increased within 2 weeks, as compared with that in the control group. Type I collagen mRNA-positive cell numbers in the immobilization group increased at all time points. However, type III collagen mRNA-positive cell numbers did not increase. Myofibroblasts in the immobilization group significantly increased compared with those in the control group at all time points, and they increased significantly with the period of immobilization. These results suggest that joint capsule fibrosis with overexpression of type I collagen occurs and progresses within 1 week after immobilization, and an increase in myofibroblasts is related to the mechanism of joint capsule fibrosis. The findings suggest the need for a treatment targeting accumulation of type I collagen associated with an increase in myofibroblasts. © 2017 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 35:1998-2006, 2017.
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Affiliation(s)
- Ryo Sasabe
- Department of Locomotive Rehabilitation Science, Unit of Rehabilitation Sciences, Nagasaki University Graduate School of Biomedical Sciences, Sakamoto 1-7-1, Nagasaki, 852-8520, Japan.,Department of Rehabilitation, Nagasaki University Hospital, Sakamoto 1-7-1, Nagasaki, 852-8520, Japan
| | - Junya Sakamoto
- Department of Physical Therapy Science, Unit of Physical and Occupational Therapy Sciences, Nagasaki University Graduate School of Biomedical Sciences, Sakamoto 1-7-1, Nagasaki, 852-8520, Japan
| | - Kyo Goto
- Department of Locomotive Rehabilitation Science, Unit of Rehabilitation Sciences, Nagasaki University Graduate School of Biomedical Sciences, Sakamoto 1-7-1, Nagasaki, 852-8520, Japan.,Department of Rehabilitation, Nagasaki Memorial Hospital, 1-11-54 Fukahori, Nagasaki, 851-0301, Japan
| | - Yuichiro Honda
- Department of Rehabilitation, Nagasaki University Hospital, Sakamoto 1-7-1, Nagasaki, 852-8520, Japan
| | - Hideki Kataoka
- Department of Rehabilitation, Nagasaki Memorial Hospital, 1-11-54 Fukahori, Nagasaki, 851-0301, Japan
| | - Jiro Nakano
- Department of Physical Therapy Science, Unit of Physical and Occupational Therapy Sciences, Nagasaki University Graduate School of Biomedical Sciences, Sakamoto 1-7-1, Nagasaki, 852-8520, Japan
| | - Tomoki Origuchi
- Department of Locomotive Rehabilitation Science, Unit of Rehabilitation Sciences, Nagasaki University Graduate School of Biomedical Sciences, Sakamoto 1-7-1, Nagasaki, 852-8520, Japan
| | - Daisuke Endo
- Department of Histology and Cell Biology, Unit of Basic Medical Sciences, Nagasaki University Graduate School of Biomedical Sciences, Sakamoto 1-7-1, Nagasaki, 852-8520, Japan
| | - Takehiko Koji
- Department of Histology and Cell Biology, Unit of Basic Medical Sciences, Nagasaki University Graduate School of Biomedical Sciences, Sakamoto 1-7-1, Nagasaki, 852-8520, Japan
| | - Minoru Okita
- Department of Locomotive Rehabilitation Science, Unit of Rehabilitation Sciences, Nagasaki University Graduate School of Biomedical Sciences, Sakamoto 1-7-1, Nagasaki, 852-8520, Japan
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Vieira L, Lovison K, Kunz RI, Antunes JS, Bertolini GRF, Brancalhão RMC, Ribeiro LDFC. Resistance exercise recovers the structure of cartilage and synovial membrane of the ankle joint of rats after sciatic compression. MOTRIZ: REVISTA DE EDUCACAO FISICA 2017. [DOI: 10.1590/s1980-6574201700030001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Affiliation(s)
| | - Keli Lovison
- Universidade Estadual do Oeste do Paraná, Brazil
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Kaneguchi A, Ozawa J, Kawamata S, Yamaoka K. Development of arthrogenic joint contracture as a result of pathological changes in remobilized rat knees. J Orthop Res 2017; 35:1414-1423. [PMID: 27601089 DOI: 10.1002/jor.23419] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/25/2016] [Accepted: 08/31/2016] [Indexed: 02/04/2023]
Abstract
This study aimed to elucidate how rats recover from immobilization-induced knee joint contracture. Rats' right knees were immobilized by an external fixator at a flexion of 140° for 3 weeks. After removal of the fixator, the joints were allowed to move freely (remobilization) for 0, 1, 3, 7, or 14 days (n = 5 each). To distinguish myogenic and arthrogenic contractures, the passive extension range of motion was measured before and after myotomy of the knee flexors. Knee joints were histologically analyzed and the expression of genes encoding inflammatory or fibrosis-related mediators, interleukin-1β (1L-1β), fibrosis-related transforming growth factor-β1 (TGF-β1), and collagen type I (COL1A1) and III (COL3A1), were examined in the knee joint posterior capsules using real-time PCR. Both myogenic and arthrogenic contractures were established within 3 weeks of immobilization. During remobilization, the myogenic contracture decreased over time. In contrast, the arthrogenic contracture developed further during the remobilization period. On day 1 of remobilization, inflammatory changes characterized by edema, inflammatory cell infiltration, and upregulation of IL-1β gene started in the knee joint posterior capsule. In addition, collagen deposition accompanied by fibroblast proliferation, with upregulation of TGF-β1, COL1A1, and COL3A1 genes, appeared in the joint capsule between days 7 and 14. These results suggest the progression of arthrogenic contracture following remobilization, which is characterized by fibrosis development, is possibly triggered by inflammation in the joint capsule. It is therefore necessary to focus on developing new treatment strategies for immobilization-induced joint contracture. © 2017 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 35:1414-1423, 2017.
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Affiliation(s)
- Akinori Kaneguchi
- Major in Medical Engineering and Technology, Graduate School of Medical Technology and Health Welfare Sciences, Hiroshima International University, Kurose-Gakuendai 555-36, Higashi-Hiroshima, Hiroshima, Japan
| | - Junya Ozawa
- Faculty of Rehabilitation, Department of Rehabilitation, Hiroshima International University, Kurose-Gakuendai 555-36, Higashi-Hiroshima, Hiroshima 739-2695, Japan
| | - Seiichi Kawamata
- Institute of Biomedical and Health Sciences, Hiroshima University, 1-2-3, Kasumi, Minami-Ku, Hiroshima, Japan
| | - Kaoru Yamaoka
- Faculty of Rehabilitation, Department of Rehabilitation, Hiroshima International University, Kurose-Gakuendai 555-36, Higashi-Hiroshima, Hiroshima 739-2695, Japan
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Iwasawa H, Nomura M, Sakitani N, Watanabe K, Watanabe D, Moriyama H. Stretching After Heat But Not After Cold Decreases Contractures After Spinal Cord Injury in Rats. Clin Orthop Relat Res 2016; 474:2692-2701. [PMID: 27530397 PMCID: PMC5085939 DOI: 10.1007/s11999-016-5030-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/10/2016] [Accepted: 08/08/2016] [Indexed: 01/31/2023]
Abstract
BACKGROUND Contractures are a prevalent and potentially severe complication in patients with neurologic disorders. Although heat, cold, and stretching are commonly used for treatment of contractures and/or spasticity (the cause of many contractures), the sequential effects of these modalities remain unclear. QUESTIONS/PURPOSES Using an established rat model with spinal cord injury with knee flexion contracture, we sought to determine what combination of heat or cold before stretching is the most effective for treatment of contractures derived from spastic paralyses and investigated which treatment leads to the best (1) improvement in the loss of ROM; (2) restoration of deterioration in the muscular and articular factors responsible for contractures; and (3) amelioration of histopathologic features such as muscular fibrosis in biceps femoris and shortening of the joint capsule. METHODS Forty-two adolescent male Wistar rats were used. After spasticity developed at 2 weeks postinjury, each animal with spinal cord injury underwent the treatment protocol daily for 1 week. Knee extension ROM was measured with a goniometer by two examiners blinded to each other's scores. The muscular and articular factors contributing to contractures were calculated by measuring ROM before and after the myotomies. We quantitatively measured the muscular fibrosis and the synovial intima length, and observed the distribution of collagen of skeletal muscle. The results were confirmed by a blinded observer. RESULTS The ROM of heat alone (34° ± 1°) and cold alone (34° ± 2°) rats were not different with the numbers available from that of rats with spinal cord injury (35° ± 2°) (p = 0.92 and 0.89, respectively). Stretching after heat (24° ± 1°) was more effective than stretching alone (27° ± 3°) at increasing ROM (p < 0.001). Contrastingly, there was no difference between stretching after cold (25° ± 1°) and stretching alone (p = 0.352). Stretching after heat was the most effective for percentage improvement of muscular (29%) and articular (50%) factors of contractures. Although quantification of muscular fibrosis in the rats with spinal cord injury (11% ± 1%) was higher than that of controls (9% ± 0.4%) (p = 0.01), no difference was found between spinal cord injury and each treatment protocol. The total synovial intima length of rats with spinal cord injury (5.9 ± 0.2 mm) became shorter than those of the controls (7.6 ± 0.2 mm) (p < 0.001), and those of stretching alone (6.9 ± 0.4 mm), stretching after heat (7.1 ± 0.3 mm), and stretching after cold (6.7 ± 0.4 mm) increased compared with rats with spinal cord injury (p = 0.01, p = 0.001, and p = 0.04, respectively). The staining intensity and pattern of collagen showed no difference among the treatment protocols. CONCLUSIONS This animal study implies that heat or cold alone is ineffective, and that stretching is helpful for the correction of contractures after spinal cord injury. In addition, we provide evidence that heat is more beneficial than cold to increase the effectiveness of stretching. CLINICAL RELEVANCE Our findings tend to support the idea that stretching after heat can improve the loss of ROM and histopathologic features of joint tissues. However, further studies are warranted to determine if our findings are clinically applicable.
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Affiliation(s)
- Hiroyuki Iwasawa
- Department of Rehabilitation Science, Graduate School of Health Sciences, Kobe University, Tomogaoka 7-10-2, Suma-ku, Kobe, 654-0142 Japan ,Department of Rehabilitation, St Marianna University School of Medicine, Sugao, Miyamae-ku, Kawasaki, Japan
| | - Masato Nomura
- Department of Rehabilitation Science, Graduate School of Health Sciences, Kobe University, Tomogaoka 7-10-2, Suma-ku, Kobe, 654-0142 Japan
| | - Naoyoshi Sakitani
- Department of Rehabilitation Science, Graduate School of Health Sciences, Kobe University, Tomogaoka 7-10-2, Suma-ku, Kobe, 654-0142 Japan
| | - Kosuke Watanabe
- Department of Rehabilitation Science, Graduate School of Health Sciences, Kobe University, Tomogaoka 7-10-2, Suma-ku, Kobe, 654-0142 Japan
| | - Daichi Watanabe
- Department of Rehabilitation Science, Graduate School of Health Sciences, Kobe University, Tomogaoka 7-10-2, Suma-ku, Kobe, 654-0142 Japan
| | - Hideki Moriyama
- Department of Rehabilitation Science, Graduate School of Health Sciences, Kobe University, Tomogaoka 7-10-2, Suma-ku, Kobe, 654-0142 Japan
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P2X3 and P2X2/3 Receptors Play a Crucial Role in Articular Hyperalgesia Development Through Inflammatory Mechanisms in the Knee Joint Experimental Synovitis. Mol Neurobiol 2016; 54:6174-6186. [PMID: 27709491 DOI: 10.1007/s12035-016-0146-2] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Accepted: 09/19/2016] [Indexed: 01/25/2023]
Abstract
Osteoarthritis (OA) is a degenerative and progressive disease characterized by cartilage breakdown and by synovial membrane inflammation, which results in disability, joint swelling, and pain. The purinergic P2X3 and P2X2/3 receptors contribute to development of inflammatory hyperalgesia, participate in arthritis processes in the knee joint, and are expressed in chondrocytes and nociceptive afferent fibers innervating the knee joint. In this study, we hypothesized that P2X3 and P2X2/3 receptors activation by endogenous ATP (adenosine 5'-triphosphate) induces articular hyperalgesia in the knee joint of male and female rats through an indirect sensitization of primary afferent nociceptors dependent on the previous release of pro-inflammatory cytokines and/or on neutrophil migration. We found that the blockade of articular P2X3 and P2X2/3 receptors significantly attenuated carrageenan-induced hyperalgesia in the knee joint of male and estrus female rats in a similar manner. The carrageenan-induced knee joint inflammation increased the expression of P2X3 receptors in chondrocytes of articular cartilage. Further, the blockade of articular P2X3 and P2X2/3 receptors significantly reduced the increased concentration of TNF-α, IL-6, and CINC-1 and the neutrophil migration induced by carrageenan. These findings indicate that P2X3 and P2X2/3 receptors activation by endogenous ATP is essential to hyperalgesia development in the knee joint through an indirect sensitization of primary afferent nociceptors dependent on the previous release of pro-inflammatory cytokines and/or on neutrophil migration.
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Pietrzak M. Adhesive capsulitis: An age related symptom of metabolic syndrome and chronic low-grade inflammation? Med Hypotheses 2016; 88:12-7. [PMID: 26880627 DOI: 10.1016/j.mehy.2016.01.002] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2015] [Revised: 11/29/2015] [Accepted: 01/01/2016] [Indexed: 02/08/2023]
Abstract
Adhesive capsulitis (AC) is very poorly understood, particularly it's underlying etiology. Obesity and metabolic syndrome, which are strongly associated with chronic low grade inflammation, are becoming increasingly understood to underlie a raft of morbid states including upper limb pain syndromes, diabetes (DM), cardiovascular disease (CVD), cancer and central nervous system dysfunction and degeneration. Notwithstanding age, two of the strongest established risk factors for AC are DM and CVD. The hypothesis argues that similar to DM and CVD, the inflammation and capsular fibrosis seen in AC is precipitated by metabolic syndrome and chronic low grade inflammation. These pathophysiological mechanisms are highly likely to be perpetuated by upregulation of pro-inflammatory cytokine production, sympathetic dominance of autonomic balance, and neuro-immune activation. The hypothesis predicts and describes how these processes may etiologically underpin and induce each sub-classification of AC. An improved understanding of the etiology of AC may lead to more accurate diagnosis, improved management, treatment outcomes, and reduce or prevent pain, disability and suffering associated with the disease. The paper follows on with a discussion of similarities between the pathophysiology of AC to general systemic inflammatory control mechanisms whereby connective tissue (CT) fibrosis is induced as a storage depot for leukocytes and chronic inflammatory cells. The potential role of hyaluronic acid (HA), the primary component of the extracellular matrix (ECM) and CT, in the pathophysiology of AC is also discussed with potential treatment implications. Lastly, a biochemical link between physical and mental health through the ECM is described and the concept of a periventricular-limbic central driver of CT dysfunction is introduced.
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Affiliation(s)
- Max Pietrzak
- University of Bath, Claverton Down Road, Bath, North East Somerset, BA2 7AY, United Kingdom.
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Zhang M, Shi C, Xia C, Yang J, Niu X, Zhuang G, Yin P. Anti-DR5 mAb inhibits proliferation of human fibroblast-like synovial cells and reduces their cytokine secretion in vitro. Onco Targets Ther 2015; 8:2745-55. [PMID: 26491348 PMCID: PMC4599060 DOI: 10.2147/ott.s87448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND We have previously reported that anti-death receptor 5 (DR5) monoclonal antibody (mAb) is therapeutically effective in the treatment of rheumatoid arthritis (RA) in a collagen-induced arthritis rat model. However, the molecular mechanism and the effect of anti-DR5 mAb on proapoptotic genes and cytokine secretion in the human fibroblast-like synovial cells (FLS) requires further clarification. This study may provide new evidence for the application of anti-DR5 mAb as a treatment for RA. METHODS Human FLS were isolated from patients with RA and were treated with anti-DR5 mAb. An MTT assay and flow cytometry were used to detect the induction of apoptosis in vitro. Cytokine secretion by the FLS was detected using the enzyme-linked immunosorbent assay. The mRNA expression was assessed by reverse transcription polymerase chain reaction, and the protein expression was analyzed by Western blot. The apoptotic pathway was investigated further using a caspase inhibition assay. RESULTS Anti-DR5 mAb-induced apoptosis in human RA FLS in vitro. The protein expressions of caspase-8, -3, and -9 were decreased in human anti-DR5 mAb-treated FLS in a dose-dependent manner through exposure to a caspase inhibitor, indicating that anti-DR5 mAb induction of apoptosis is through the caspase pathway. Decreased levels of tumor necrosis factor-α (TNF-α) and interferon-γ (IFN-γ) were detected after treatment with anti-DR5 mAb in vitro. CONCLUSION Anti-DR5 mAb may induce apoptosis in human FLS through the caspase pathway and through decreased secretions of TNF-α and IFN-γ.
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Affiliation(s)
- Minping Zhang
- Organ Transplantation Institute, Anti-Cancer Research Center, Medical College, Xiamen University, Xiamen, People's Republic of China ; The Department of Pharmacy, First Hospital, Nanping, People's Republic of China
| | - Chunyan Shi
- Organ Transplantation Institute, Anti-Cancer Research Center, Medical College, Xiamen University, Xiamen, People's Republic of China
| | - Chun Xia
- The Department of Orthopaedics, Xiamen University, Xiamen, Fujian, People's Republic of China
| | - Jin Yang
- Organ Transplantation Institute, Anti-Cancer Research Center, Medical College, Xiamen University, Xiamen, People's Republic of China
| | - Xingyang Niu
- Organ Transplantation Institute, Anti-Cancer Research Center, Medical College, Xiamen University, Xiamen, People's Republic of China
| | - Guohong Zhuang
- Organ Transplantation Institute, Anti-Cancer Research Center, Medical College, Xiamen University, Xiamen, People's Republic of China
| | - Ping Yin
- The Department of Pathology, Xiamen Zhongshan Hospital, Xiamen University, Xiamen, Fujian, People's Republic of China
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Joint haemorrhage partly accelerated immobilization-induced synovial adhesions and capsular shortening in rats. Knee Surg Sports Traumatol Arthrosc 2014; 22:2874-83. [PMID: 24013446 DOI: 10.1007/s00167-013-2659-9] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/05/2013] [Accepted: 08/24/2013] [Indexed: 10/26/2022]
Abstract
PURPOSE To elucidate the effects of intra-articular haemorrhage on the joint capsule of immobilized knees in rats. METHODS The unilateral knee joints were immobilized using a plastic plate and screws. Sham operated rats had only screws inserted. A single injection of fresh autologous blood was given postoperatively into the knee joints of the immobilized blood injection (Im-B) and the Sham blood injection (Sm-B) groups. Normal saline was administered for the immobilized-saline injection (Im-S) group. Sagittal sections were prepared from the medial midcondylar region of the knee and assessed with histological, histomorphometric, and immunohistochemical methods. The range of motion (ROM) was measured, and the mechanical property of the capsule was assessed by scanning acoustic microscope. RESULTS Absorption of the injected blood was delayed and made severe adhesions in the Im-B group. The length of the synovial membrane in the Im-B group was significantly shorter than that of the other groups. The ROM was significantly restricted in the Im-B group compared with the other groups. The elasticity of the posterior capsule in the Im-B group was significantly lower than that in the Sm-B group. Iron deposition was observed in the Im-B and Sm-B groups. Strong immunoreactivities of CD68, TGF-β1, and α-SMA were observed in the adhesion area of the Im-B group. Joint immobilization with blood injection caused severe capsular adhesion and limited range of motion. Immunostaining related to fibrosis increased with joint haemorrhage. CONCLUSION Intra-articular haemorrhage with joint immobilization might be an accelerated risk factor for joint contracture. It is likely that leaving a haematoma inside an immobilized joint should be avoided.
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Trudel G, Laneuville O, Coletta E, Goudreau L, Uhthoff HK. Quantitative and temporal differential recovery of articular and muscular limitations of knee joint contractures; results in a rat model. J Appl Physiol (1985) 2014; 117:730-7. [DOI: 10.1152/japplphysiol.00409.2014] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Joint contractures alter the mechanical properties of articular and muscular structures. Reversibility of a contracture depends on the restoration of the elasticity of both structures. We determined the differential contribution of articular and muscular structures to knee flexion contractures during spontaneous recovery. Rats (250, divided into 24 groups) had one knee joint surgically fixed in flexion for six different durations, from 1 to 32 wk, creating joint contractures of various severities. After the fixation was removed, the animals were left to spontaneously recover for 1 to 48 wk. After the recovery periods, animals were killed and the knee extension was measured before and after division of the transarticular posterior muscles using a motorized arthrometer. No articular limitation had developed in contracture of recent onset (≤2 wk of fixation, P > 0.05); muscular limitations were responsible for the majority of the contracture (34 ± 8° and 38 ± 6°, respectively; both P < 0.05). Recovery for 1 and 8 wk reversed the muscular limitation of contractures of recent onset (1 and 2 wk of fixation, respectively). Long-lasting contractures (≥4 wk of fixation) presented articular limitations, irreversible in all 12 durations of recovery compared with controls (all 12 P < 0.05). Knee flexion contractures of recent onset were primarily due to muscular structures, and they were reversible during spontaneous recovery. Long-lasting contractures were primarily due to articular structures and were irreversible. Comprehensive temporal and quantitative data on the differential reversibility of mechanically significant alterations in articular and muscular structures represent novel evidence on which to base clinical practice.
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Affiliation(s)
- Guy Trudel
- Division of Physical Medicine and Rehabilitation, Department of Medicine, University of Ottawa, Ottawa, Ontario, Canada
- Bone and Joint Research Laboratory, University of Ottawa, Ottawa, Ontario, Canada
| | - Odette Laneuville
- Department of Biochemistry, Microbiology and Immunology, University of Ottawa, Ottawa, Ontario, Canada
| | - Elizabeth Coletta
- Bone and Joint Research Laboratory, University of Ottawa, Ottawa, Ontario, Canada
| | - Louis Goudreau
- Biomedical Engineering, The Ottawa Hospital Rehabilitation Centre, Ottawa, Ontario, Canada; and
| | - Hans K. Uhthoff
- Bone and Joint Research Laboratory, University of Ottawa, Ottawa, Ontario, Canada
- Division of Orthopedic Surgery, Department of Surgery, University of Ottawa, Ottawa, Ontario, Canada
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Kunz RI, Coradini JG, Silva LI, Bertolini GRF, Brancalhão RMC, Ribeiro LFC. Effects of immobilization and remobilization on the ankle joint in Wistar rats. ACTA ACUST UNITED AC 2014; 47:842-9. [PMID: 25140815 PMCID: PMC4181219 DOI: 10.1590/1414-431x20143795] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2013] [Accepted: 06/06/2014] [Indexed: 12/26/2022]
Abstract
A sprained ankle is a common musculoskeletal sports injury and it is often treated by immobilization of the joint. Despite the beneficial effects of this therapeutic measure, the high prevalence of residual symptoms affects the quality of life, and remobilization of the joint can reverse this situation. The aim of this study was to analyze the effects of immobilization and remobilization on the ankle joint of Wistar rats. Eighteen male rats had their right hindlimb immobilized for 15 days, and were divided into the following groups: G1, immobilized; G2, remobilized freely for 14 days; and G3, remobilized by swimming and jumping in water for 14 days, performed on alternate days, with progression of time and a series of exercises. The contralateral limb was the control. After the experimental period, the ankle joints were processed for microscopic analysis. Histomorphometry did not show any significant differences between the control and immobilized/remobilized groups and members, in terms of number of chondrocytes and thickness of the articular cartilage of the tibia and talus. Morphological analysis of animals from G1 showed significant degenerative lesions in the talus, such as exposure of the subchondral bone, flocculation, and cracks between the anterior and mid-regions of the articular cartilage and the synovial membrane. Remobilization by therapeutic exercise in water led to recovery in the articular cartilage and synovial membrane of the ankle joint when compared with free remobilization, and it was shown to be an effective therapeutic measure in the recovery of the ankle joint.
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Affiliation(s)
- R I Kunz
- Laboratório de Biologia Estrutural e Funcional, Universidade Estadual do Oeste do Paraná, Cascavel, PR, Brasil
| | - J G Coradini
- Laboratório do Estudo das Lesões e Recursos Fisioterapêuticos, Universidade Estadual do Oeste do Paraná, Cascavel, PR, Brasil
| | - L I Silva
- Laboratório do Estudo das Lesões e Recursos Fisioterapêuticos, Universidade Estadual do Oeste do Paraná, Cascavel, PR, Brasil
| | - G R F Bertolini
- Laboratório do Estudo das Lesões e Recursos Fisioterapêuticos, Universidade Estadual do Oeste do Paraná, Cascavel, PR, Brasil
| | - R M C Brancalhão
- Laboratório de Biologia Estrutural e Funcional, Universidade Estadual do Oeste do Paraná, Cascavel, PR, Brasil
| | - L F C Ribeiro
- Laboratório de Biologia Estrutural e Funcional, Universidade Estadual do Oeste do Paraná, Cascavel, PR, Brasil
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Trevisan G, Hoffmeister C, Rossato MF, Oliveira SM, Silva MA, Silva CR, Fusi C, Tonello R, Minocci D, Guerra GP, Materazzi S, Nassini R, Geppetti P, Ferreira J. TRPA1 receptor stimulation by hydrogen peroxide is critical to trigger hyperalgesia and inflammation in a model of acute gout. Free Radic Biol Med 2014; 72:200-9. [PMID: 24780252 DOI: 10.1016/j.freeradbiomed.2014.04.021] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/05/2013] [Revised: 03/20/2014] [Accepted: 04/21/2014] [Indexed: 12/27/2022]
Abstract
Acute gout attacks produce severe joint pain and inflammation associated with monosodium urate (MSU) crystals leading to oxidative stress production. The transient potential receptor ankyrin 1 (TRPA1) is expressed by a subpopulation of peptidergic nociceptors and, via its activation by endogenous reactive oxygen species, including hydrogen peroxide (H2O2), contributes to pain and neurogenic inflammation. The aim of this study was to investigate the role of TRPA1 in hyperalgesia and inflammation in a model of acute gout attack in rodents. Inflammatory parameters and mechanical hyperalgesia were measured in male Wistar rats and in wild-type (Trpa1(+/+)) or TRPA1-deficient (Trpa1(-/-)) male mice. Animals received intra-articular (ia, ankle) injection of MSU. The role of TRPA1 was assessed by receptor antagonism, gene deletion or expression, sensory fiber defunctionalization, and calcitonin gene-related peptide (CGRP) release. We found that nociceptor defunctionalization, TRPA1 antagonist treatment (via ia or oral administration), and Trpa1 gene ablation abated hyperalgesia and inflammatory responses (edema, H2O2 generation, interleukin-1β release, and neutrophil infiltration) induced by ia MSU injection. In addition, we showed that MSU evoked generation of H2O2 in synovial tissue, which stimulated TRPA1 producing CGRP release and plasma protein extravasation. The MSU-elicited responses were also reduced by the H2O2-detoxifying enzyme catalase and the reducing agent dithiothreitol. TRPA1 activation by MSU challenge-generated H2O2 mediates the entire inflammatory response in an acute gout attack rodent model, thus strengthening the role of the TRPA1 receptor and H2O2 production as potential targets for treatment of acute gout attacks.
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Affiliation(s)
- Gabriela Trevisan
- Graduate Program in Biological Sciences: Toxicological Biochemistry, Federal University of Santa Maria, Santa Maria, RS, Brazil; Laboratory of Cellular and Molecular Biology, Graduate Program in Health Science, University of Southern Santa Catarina, Criciúma, SC, Brazil
| | - Carin Hoffmeister
- Graduate Program in Pharmacology, Federal University of Santa Maria, Santa Maria, RS, Brazil
| | - Mateus Fortes Rossato
- Graduate Program in Biological Sciences: Toxicological Biochemistry, Federal University of Santa Maria, Santa Maria, RS, Brazil
| | - Sara Marchesan Oliveira
- Graduate Program in Biological Sciences: Toxicological Biochemistry, Federal University of Santa Maria, Santa Maria, RS, Brazil
| | - Mariane Arnoldi Silva
- Graduate Program in Biological Sciences: Toxicological Biochemistry, Federal University of Santa Maria, Santa Maria, RS, Brazil
| | - Cássia Regina Silva
- Graduate Program in Biological Sciences: Toxicological Biochemistry, Federal University of Santa Maria, Santa Maria, RS, Brazil
| | - Camilla Fusi
- Department of Health Sciences, University of Florence, Florence, Italy
| | - Raquel Tonello
- Graduate Program in Biological Sciences: Toxicological Biochemistry, Federal University of Santa Maria, Santa Maria, RS, Brazil
| | - Daiana Minocci
- Department of Health Sciences, University of Florence, Florence, Italy
| | - Gustavo Petri Guerra
- Department of Food Technology, Federal Technological University of Paraná, Medianeira Campus, Medianeira, PR, Brazil
| | - Serena Materazzi
- Department of Health Sciences, University of Florence, Florence, Italy
| | - Romina Nassini
- Department of Health Sciences, University of Florence, Florence, Italy
| | | | - Juliano Ferreira
- Graduate Program in Biological Sciences: Toxicological Biochemistry, Federal University of Santa Maria, Santa Maria, RS, Brazil; Graduate Program in Pharmacology, Federal University of Santa Maria, Santa Maria, RS, Brazil; Department of Pharmacology, Federal University of Santa Catarina, 88040-900 Florianópolis, SC, Brazil.
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Yabe Y, Hagiwara Y, Suda H, Ando A, Onoda Y, Tsuchiya M, Hatori K, Itoi E. Joint immobilization induced hypoxic and inflammatory conditions in rat knee joints. Connect Tissue Res 2013; 54:210-7. [PMID: 23496380 DOI: 10.3109/03008207.2013.786056] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The purpose of this study was to examine the hypoxic and inflammatory conditions after immobilization in the joint capsule of rat knees. The unilateral knee joints of adult male rats were immobilized with an internal fixator (Im group) for 1 day, 3 days, and 1, 2, 4, 8, and 16 weeks. Sham-operated animals had holes drilled in the femur and tibia and screws inserted without a plate (control group). The number of cells and blood vessels in the capsule were histologically examined. The hypoxic condition in the capsule was histologically examined with a Hypoxyprobe™-1. The gene expressions related to the hypoxic (hypoxia inducible factor-1α, vascular endothelial growth factor, and fibroblast growth factor 2) and inflammatory conditions [interleukin-6 (IL-6), IL-1α, IL-1β, tumor necrosis factor-α, and tumor necrosis factor-β] were evaluated by quantitative reverse transcription polymerase chain reaction. The number of cells was unchanged at 1 day in the two groups; however, the number significantly increased at 3 days in the Im group. The number of blood vessels in the Im group gradually decreased. Strong immunostaining of Hypoxyprobe™-1 around the blood vessels was observed in the Im group. The gene expressions of hypoxia inducible factor-1α and fibroblast growth factor 2 were significantly higher in the Im group compared with those in the control group. The gene expressions of IL-6, IL-1α, IL-1β, and tumor necrosis factor-β were significantly higher in the Im group compared with those in the control group. These data indicated that joint immobilization induced hypoxic and inflammatory conditions in the joint capsule, which might be an initiating factor for joint contracture.
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Affiliation(s)
- Yutaka Yabe
- Department of Orthopaedic Surgery, Tohoku University Graduate School of Medicine, Aoba-ku, Sendai, Japan
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Thomsen LN, Berg LC, Markussen B, Thomsen PD. Synovial folds in equine articular process joints. Equine Vet J 2012; 45:448-53. [DOI: 10.1111/j.2042-3306.2012.00687.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2011] [Accepted: 09/21/2012] [Indexed: 11/30/2022]
Affiliation(s)
- L. N. Thomsen
- Department of Basic Animal and Veterinary Sciences; Faculty of Life Sciences; University of Copenhagen; Denmark
| | - L. C. Berg
- Department of Basic Animal and Veterinary Sciences; Faculty of Life Sciences; University of Copenhagen; Denmark
| | - B. Markussen
- Department of Mathematical Sciences; Faculty of Science; University of Copenhagen; Denmark
| | - P. D. Thomsen
- Department of Basic Animal and Veterinary Sciences; Faculty of Life Sciences; University of Copenhagen; Denmark
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Ando A, Suda H, Hagiwara Y, Onoda Y, Chimoto E, Itoi E. Remobilization does not restore immobilization-induced adhesion of capsule and restricted joint motion in rat knee joints. TOHOKU J EXP MED 2012; 227:13-22. [PMID: 22510696 DOI: 10.1620/tjem.227.13] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Joint immobilization, which is used in orthopaedic treatments and observed in bedridden people, usually causes restricted joint motion. Decreased joint motion diminishes activities of daily living and increases burden of nursing-care. The purpose of this study was to clarify the reversibility of immobilization-induced capsular changes and restricted joint motion in rat knee joints. The unilateral knee joints of adult male rats were immobilized with an internal fixator for 1, 2, 4, 8, and 16 weeks as a model of immobilization after surgery or disuse of the joint. After the fixation devices were removed, the rats were allowed to move freely for 16 weeks. Sham-operated rats were used as controls. Sagittal sections at medial midcondylar regions were made and assessed with histological, histomorphometric, and immunohistochemical methods. Joint motion was measured using a custom-made device under x-ray control after removal of the periarticular muscles. In the 1/16-week and 2/16-week immobilization-remobilization (Im-Rm) groups, cord-like structures connecting the superior and inferior portions of the posterior capsule (partial adhesion) were observed without restricted joint motion. In the 4/16-, 8/16-, and 16/16-week Im-Rm groups, global adhesion of the posterior capsule and restricted joint motion were observed. The restricted joint motion was not completely restored after incision of the posterior capsule. These data indicate that immobilization alone causes irreversible capsular changes and arthrogenic restricted joint motion. Besides the joint capsule, other arthrogenic factors such as ligaments might influence the restricted joint motion. Prolonged immobilization over 4 weeks should be avoided to prevent irreversible joint contracture.
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Affiliation(s)
- Akira Ando
- Department of Orthopaedic Surgery, Tohoku University School of Medicine, Sendai, Japan.
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Ando A, Suda H, Hagiwara Y, Onoda Y, Chimoto E, Saijo Y, Itoi E. Reversibility of Immobilization-Induced Articular Cartilage Degeneration after Remobilization in Rat Knee Joints. TOHOKU J EXP MED 2011; 224:77-85. [DOI: 10.1620/tjem.224.77] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Affiliation(s)
- Akira Ando
- Department of Orthopaedic Surgery, Tohoku University School of Medicine
| | - Hideaki Suda
- Department of Orthopaedic Surgery, Tohoku University School of Medicine
| | | | - Yoshito Onoda
- Department of Orthopaedic Surgery, Tohoku University School of Medicine
| | - Eiichi Chimoto
- Department of Orthopaedic Surgery, Tohoku University School of Medicine
| | - Yoshifumi Saijo
- Department of Biomedical Imaging, Graduate School of Biomedical Engineering, Tohoku University
| | - Eiji Itoi
- Department of Orthopaedic Surgery, Tohoku University School of Medicine
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