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Lin ASP, Reece DS, Thote T, Sridaran S, Stevens HY, Willett NJ, Guldberg RE. Intra-articular delivery of micronized dehydrated human amnion/chorion membrane reduces degenerative changes after onset of post-traumatic osteoarthritis. Front Bioeng Biotechnol 2023; 11:1224141. [PMID: 37744252 PMCID: PMC10512062 DOI: 10.3389/fbioe.2023.1224141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Accepted: 08/28/2023] [Indexed: 09/26/2023] Open
Abstract
Background: Micronized dehydrated human amnion/chorion membrane (mdHACM) has reduced short term post-traumatic osteoarthritis (PTOA) progression in rats when delivered 24 h after medial meniscal transection (MMT) and is being investigated for clinical use as a disease modifying therapy. Much remains to be assessed, including its potential for longer-term therapeutic benefit and treatment effects after onset of joint degeneration. Objectives: Characterize longer-term effects of acute treatment with mdHACM and determine whether treatment administered to joints with established PTOA could slow or reverse degeneration. Hypotheses: Acute treatment effects will be sustained for 6 weeks, and delivery of mdHACM after onset of joint degeneration will attenuate structural osteoarthritic changes. Methods: Rats underwent MMT or sham surgery (left leg). mdHACM was delivered intra-articularly 24 h or 3 weeks post-surgery (n = 5-7 per group). Six weeks post-surgery, animals were euthanized and left tibiae scanned using equilibrium partitioning of an ionic contrast agent microcomputed tomography (EPIC-µCT) to structurally quantify joint degeneration. Histology was performed to examine tibial plateau cartilage. Results: Quantitative 3D µCT showed that cartilage structural metrics (thickness, X-ray attenuation, surface roughness, exposed bone area) for delayed mdHACM treatment limbs were significantly improved over saline treatment and not significantly different from shams. Subchondral bone mineral density and thickness for the delayed treatment group were significantly improved over acute treated, and subchondral bone thickness was not significantly different from sham. Marginal osteophyte degenerative changes were decreased with delayed mdHACM treatment compared to saline. Acute treatment (24 h post-surgery) did not reduce longer-term joint tissue degeneration compared to saline. Histology supported µCT findings and further revealed that while delayed treatment reduced cartilage damage, chondrocytes displayed qualitatively different morphologies and density compared to sham. Conclusion: This study provides insight into effects of intra-articular delivery timing relative to PTOA progression and the duration of therapeutic benefit of mdHACM. Results suggest that mdHACM injection into already osteoarthritic joints can improve joint health, but a single, acute mdHACM injection post-injury does not prevent long term osteoarthritis associated with meniscal instability. Further work is needed to fully characterize the durability of therapeutic benefit in stable osteoarthritic joints and the effects of repeated injections.
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Affiliation(s)
- Angela S. P. Lin
- Phil and Penny Knight Campus for Accelerating Scientific Impact, University of Oregon, Eugene, OR, United States
| | - David S. Reece
- Wallace H. Coulter Department of Biomedical Engineering, Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, United States
| | - Tanushree Thote
- Wallace H. Coulter Department of Biomedical Engineering, Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, United States
| | - Sanjay Sridaran
- Wallace H. Coulter Department of Biomedical Engineering, Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, United States
| | - Hazel Y. Stevens
- Wallace H. Coulter Department of Biomedical Engineering, Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, United States
| | - Nick J. Willett
- Phil and Penny Knight Campus for Accelerating Scientific Impact, University of Oregon, Eugene, OR, United States
| | - Robert E. Guldberg
- Phil and Penny Knight Campus for Accelerating Scientific Impact, University of Oregon, Eugene, OR, United States
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2
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Silva MO, Kirkwood N, Mulvaney P, Ellis AV, Stok KS. Evaluation of a lanthanide nanoparticle-based contrast agent for microcomputed tomography of porous channels in subchondral bone. J Orthop Res 2023; 41:447-458. [PMID: 35524421 PMCID: PMC10084061 DOI: 10.1002/jor.25361] [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: 11/04/2021] [Revised: 04/10/2022] [Accepted: 05/05/2022] [Indexed: 02/04/2023]
Abstract
Osteoarthritis (OA) is a chronic joint disease that causes disability and pain. The osteochondral interface is a gradient tissue region that plays a significant role in maintaining joint health. It has been shown that during OA, increased neoangiogenesis creates porous channels at the osteochondral interface allowing the transport of molecules related to OA. Importantly, the connection between these porous channels and the early stages of OA development is still not fully understood. Microcomputed tomography (microCT) offers the ability to image the porous channels at the osteochondral interface, however, a contrast agent is necessary to delineate the different X-ray attenuations of the tissues. In this study BaYbF5 -SiO2 nanoparticles are synthesized and optimized as a microCT contrast agent to obtain an appropriate contrast attenuation for subsequent segmentation of structures of interest, that is, porous channels, and mouse subchondral bone. For this purpose, BaYbF5 nanoparticles were synthesized and coated with a biocompatible silica shell (SiO2 ). The optimized BaYbF5 -SiO2 27 nm nanoparticles exhibited the highest average microCT attenuation among the biocompatible nanoparticles tested. The BaYbF5 -SiO2 27 nm nanoparticles increased the mean X-ray attenuation of structures of interest, for example, porous channel models and mouse subchondral bone. The BaYbF5 -SiO2 contrast attenuation was steady after diffusion into mouse subchondral bone. In this study, we obtained for the first time, the average microCT attenuation of the BaYbF5 -SiO2 nanoparticles into porous channel models and mouse subchondral bone. In conclusion, BaYbF5 -SiO2 nanoparticles are a potential contrast agent for imaging porous channels at the osteochondral interface using microCT.
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Affiliation(s)
- Mateus O Silva
- Department of Biomedical Engineering, The University of Melbourne, Parkville, Victoria, Australia
| | - Nicholas Kirkwood
- ARC Centre of Excellence in Exciton Science, School of Chemistry, The University of Melbourne, Parkville, Victoria, Australia
| | - Paul Mulvaney
- ARC Centre of Excellence in Exciton Science, School of Chemistry, The University of Melbourne, Parkville, Victoria, Australia
| | - Amanda V Ellis
- Department of Chemical Engineering, The University of Melbourne, Parkville, Victoria, Australia
| | - Kathryn S Stok
- Department of Biomedical Engineering, The University of Melbourne, Parkville, Victoria, Australia
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3
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Zhang J, Pi C, Cui C, Zhou Y, Liu B, Liu J, Xu X, Zhou X, Zheng L. PTHrP promotes subchondral bone formation in TMJ-OA. Int J Oral Sci 2022; 14:37. [PMID: 35853862 PMCID: PMC9296483 DOI: 10.1038/s41368-022-00189-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 06/13/2022] [Accepted: 06/15/2022] [Indexed: 02/08/2023] Open
Abstract
PTH-related peptide (PTHrP) improves the bone marrow micro-environment to activate the bone-remodelling, but the coordinated regulation of PTHrP and transforming growth factor-β (TGFβ) signalling in TMJ-OA remains incompletely understood. We used disordered occlusion to establish model animals that recapitulate the ordinary clinical aetiology of TMJ-OA. Immunohistochemical and histological analyses revealed condylar fibrocartilage degeneration in model animals following disordered occlusion. TMJ-OA model animals administered intermittent PTHrP (iPTH) exhibited significantly decreased condylar cartilage degeneration. Micro-CT, histomorphometry, and Western Blot analyses disclosed that iPTH promoted subchondral bone formation in the TMJ-OA model animals. In addition, iPTH increased the number of osterix (OSX)-positive cells and osteocalcin (OCN)-positive cells in the subchondral bone marrow cavity. However, the number of osteoclasts was also increased by iPTH, indicating that subchondral bone volume increase was mainly due to the iPTH-mediated increase in the bone-formation ability of condylar subchondral bone. In vitro, PTHrP treatment increased condylar subchondral bone marrow-derived mesenchymal stem cell (SMSC) osteoblastic differentiation potential and upregulated the gene and protein expression of key regulators of osteogenesis. Furthermore, we found that PTHrP-PTH1R signalling inhibits TGFβ signalling during osteoblastic differentiation. Collectively, these data suggested that iPTH improves OA lesions by enhancing osteoblastic differentiation in subchondral bone and suppressing aberrant active TGFβ signalling. These findings indicated that PTHrP, which targets the TGFβ signalling pathway, may be an effective biological reagent to prevent and treat TMJ-OA in the clinic.
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Affiliation(s)
- Jun Zhang
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & West China Hospital of Stomatology, Sichuan University, Chengdu, China.,Yunnan Key Laboratory of Stomatology, Kunming, China.,Department of, Affiliated Stomatological Hospital, Kunming Medical University, Kunming, China
| | - Caixia Pi
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Chen Cui
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Yang Zhou
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Bo Liu
- Yunnan Key Laboratory of Stomatology, Kunming, China
| | - Juan Liu
- Yunnan Key Laboratory of Stomatology, Kunming, China
| | - Xin Xu
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Xuedong Zhou
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Liwei Zheng
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & West China Hospital of Stomatology, Sichuan University, Chengdu, China.
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Emerging Targets for the Treatment of Osteoarthritis: New Investigational Methods to Identify Neo-Vessels as Possible Targets for Embolization. Diagnostics (Basel) 2022; 12:diagnostics12061403. [PMID: 35741213 PMCID: PMC9221854 DOI: 10.3390/diagnostics12061403] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 05/24/2022] [Accepted: 05/27/2022] [Indexed: 12/14/2022] Open
Abstract
Osteoarthritis (OA) is the major cause of disability, affecting over 30 million US adults. Continued research into the role of neovascularization and inflammation related to osteoarthritis in large-animal models and human clinical trials is paramount. Recent literature on the pathogenetic model of OA has refocused on low-level inflammation, resulting in joint remodeling. As a result, this has redirected osteoarthritis research toward limiting or treating joint changes associated with persistent synovitis. The overall goal of this review is to better understand the cellular and tissue-specific mechanisms of inflammation in relation to a novel OA treatment modality, Genicular Artery Embolization (GAE). This article also assesses the utility and mechanism of periarticular neovascular embolization for the treatment of OA with a particular emphasis on the balance between pro-angiogenic and anti-angiogenic cytokines, inflammatory biomarkers, and imaging changes.
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5
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Townsend K, Imbert I, Eaton V, Stevenson GW, King T. Voluntary exercise blocks ongoing pain and diminishes bone remodeling while sparing protective mechanical pain in a rat model of advanced osteoarthritis pain. Pain 2022; 163:e476-e487. [PMID: 34224496 PMCID: PMC8712625 DOI: 10.1097/j.pain.0000000000002392] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Accepted: 06/18/2021] [Indexed: 11/26/2022]
Abstract
ABSTRACT Exercise is the most common treatment recommended by healthcare providers for the treatment of musculoskeletal pain. We examined whether voluntary running wheel exercise improves pain and bone remodeling in rats with monosodium iodoacetate-induced unilateral knee joint pain. During acquisition of wheel running before osteoarthritis (OA) treatment, rats separated into 2 groups characterized by either high or low levels of voluntary wheel running as indicated by distance and peak speed. After the induction of knee joint OA, all rats showed diminished voluntary wheel running throughout the study. Voluntary wheel running failed to alter evoked nociceptive responses evaluated as weight asymmetry or hind paw tactile thresholds at any timepoint of the study. By contrast, relief of ongoing pain was demonstrated by conditioned place preference produced by lidocaine injection into the monosodium iodoacetate-treated knee in high but not low-running rats. Both high and low voluntary runners showed diminished trabecular bone loss compared with sedentary controls. These observations indicate that both high-intensity and low-intensity exercise is beneficial in protecting against bone remodeling in advanced OA. The data suggest that similar to clinical observation, bone remodeling does not correlate with pain. In addition, these results suggest that higher intensity exercise may relieve persistent ongoing OA pain while maintaining movement-evoked nociception. The relief of ongoing pain can potentially offer significant improvement in quality of life, whereas preservation of responses to movement-evoked pain may be especially important in protecting the joint from damage because of overuse.
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Affiliation(s)
- Kaylee Townsend
- Department of Biomedical Sciences, Center for Excellence in the Neurosciences, College of Osteopathic Medicine, University of New England, Biddeford, ME, United States
- Department of Psychology, College of Arts and Sciences, University of New England, Biddeford, ME, United States
| | - Ian Imbert
- Department of Biomedical Sciences, Center for Excellence in the Neurosciences, College of Osteopathic Medicine, University of New England, Biddeford, ME, United States
- Department of Psychology, College of Arts and Sciences, University of New England, Biddeford, ME, United States
| | - Victoria Eaton
- Department of Biomedical Sciences, Center for Excellence in the Neurosciences, College of Osteopathic Medicine, University of New England, Biddeford, ME, United States
- Department of Psychology, College of Arts and Sciences, University of New England, Biddeford, ME, United States
| | - Glenn W Stevenson
- Department of Biomedical Sciences, Center for Excellence in the Neurosciences, College of Osteopathic Medicine, University of New England, Biddeford, ME, United States
- Department of Psychology, College of Arts and Sciences, University of New England, Biddeford, ME, United States
| | - Tamara King
- Department of Biomedical Sciences, Center for Excellence in the Neurosciences, College of Osteopathic Medicine, University of New England, Biddeford, ME, United States
- Department of Psychology, College of Arts and Sciences, University of New England, Biddeford, ME, United States
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6
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Syed Sulaiman SZ, Tan WM, Radzi R, Shafie INF, Ajat M, Mansor R, Mohamed S, Rahmad N, Ng AMH, Lau SF. Synovial fluid proteome profile of surgical versus chemical induced osteoarthritis in rabbits. PeerJ 2022; 10:e12897. [PMID: 35228907 PMCID: PMC8881915 DOI: 10.7717/peerj.12897] [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] [Received: 06/04/2021] [Accepted: 01/16/2022] [Indexed: 01/11/2023] Open
Abstract
BACKGROUND Animal models are significant for understanding human osteoarthritis (OA). This study compared the synovial fluid proteomics changes in surgical and chemical induced OA models. METHODS Thirty rabbits either had anterior cruciate ligament transection (ACLT) procedure or injected intra-articularly with monosodium iodoacetate (MIA, 8 mg) into the right knee. The joints were anatomically assessed, and the synovial fluid proteins analyzed using two-dimensional polyacrylamide gel electrophoresis (2DGE) and MALDI TOF/TOF mass spectrometry analysis at 4, 8 and 12 weeks. The proteins' upregulation and downregulation were compared with control healthy knees. RESULTS Seven proteins (histidine-rich glycoprotein, beta-actin-like protein 2 isoform X1, retinol-binding protein-4, alpha-1-antiproteinase, gelsolin isoform, serotransferrin, immunoglobulin kappa-b4 chain-C-region) were significantly expressed by the surgical induction. They characterized cellular process (27%), organization of cellular components or biogenesis (27%), localization (27%) and biological regulation (18%), which related to synovitis, increased cellularity, and subsequently cartilage damage. Three proteins (apolipoprotein I-IV precursor, serpin peptidase inhibitor and haptoglobin precursor) were significantly modified by the chemical induction. They characterized stimulus responses (23%), immune responses (15%), biological regulations (15%), metabolism (15%), organization of cellular components or biogenesis (8%), cellular process (8%), biological adhesions (8%) and localization (8%), which related to chondrocytes glycolysis/death, neovascularization, subchondral bone necrosis/collapse and inflammation. CONCLUSIONS The surgical induced OA model showed a wider range of protein changes, which were most upregulated at week 12. The biological process proteins expressions showed the chemical induced joints had slower OA progression compared to surgical induced joints. The chemical induced OA joints showed early inflammatory changes, which later decreased.
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Affiliation(s)
| | - Wei Miao Tan
- Department of Veterinary Clinical Studies, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Rozanaliza Radzi
- Department of Veterinary Clinical Studies, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Intan Nur Fatiha Shafie
- Department of Veterinary Clinical Studies, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Mokrish Ajat
- Department of Veterinary Preclinical Studies, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Rozaihan Mansor
- Department of Farm and Exotic Animals Medicine and Surgery, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Suhaila Mohamed
- Laboratory of Cancer Research UPM-MAKNA (CANRES), Institute of Bioscience, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | | | - Angela Min Hwei Ng
- Tissue Engineering Centre, Universiti Kebangsaan Malaysia, Cheras, Kuala Lumpur, Malaysia
| | - Seng Fong Lau
- Department of Veterinary Clinical Studies, Universiti Putra Malaysia, Serdang, Selangor, Malaysia,Laboratory of Cancer Research UPM-MAKNA (CANRES), Institute of Bioscience, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
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7
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Durongbhan P, Davey CE, Stok KS. SPHARM-PDM based image preprocessing pipeline for quantitative morphometric analysis (QMA) for in situ joint assessment in rabbit and rat models. Sci Rep 2022; 12:1113. [PMID: 35064147 PMCID: PMC8782854 DOI: 10.1038/s41598-021-04542-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Accepted: 12/21/2021] [Indexed: 02/08/2023] Open
Abstract
The accessibility of quantitative measurements of joint morphometry depends on appropriate tibial alignment and volume of interest (VOI) selection of joint compartments; often a challenging and time-consuming manual task. In this work, we developed a novel automatic, efficient, and model-invariant image preprocessing pipeline that allows for highly reproducible 3D quantitative morphometric analysis (QMA) of the joint. The pipeline addresses the problem by deploying two modules: an alignment module and a subdivision module. Alignment is achieved by representing the tibia in its basic form using lower degree spherical harmonic basis functions and aligning using principal component analysis. The second module subdivides the joint into lateral and medial VOIs via a watershedding approach based on persistence homology. Multiple repeated micro-computed tomography scans of small (rat) and medium (rabbit) animal knees were processed using the pipeline to demonstrate model invariance. Existing QMA was performed to evaluate the pipeline’s ability to generate reproducible measurements. Intraclass correlation coefficient and mean-normalised root-mean-squared error of more than 0.75 and lower than 9.5%, respectively, were achieved for joint centre of mass, joint contact area under virtual loading, joint space width, and joint space volume. Processing time and technical requirements were reduced compared to manual processing in previous studies.
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Affiliation(s)
- Pholpat Durongbhan
- Department of Biomedical Engineering, The University of Melbourne, Parkville, VIC, 3010, Australia
| | - Catherine E Davey
- Department of Biomedical Engineering, The University of Melbourne, Parkville, VIC, 3010, Australia
| | - Kathryn S Stok
- Department of Biomedical Engineering, The University of Melbourne, Parkville, VIC, 3010, Australia.
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8
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Yuan W, Wu Y, Zhou X, Zheng Y, Wang J, Liu J. Comparison and applicability of three induction methods of temporomandibular joint osteoarthritis in murine models. J Oral Rehabil 2021; 49:430-441. [PMID: 34936115 DOI: 10.1111/joor.13300] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2021] [Revised: 12/07/2021] [Accepted: 12/16/2021] [Indexed: 02/05/2023]
Abstract
BACKGROUND Temporomandibular joint osteoarthritis (TMJ-OA) causes severe symptoms such as chewing difficulties, acute pain and even maxillofacial deformity. However, there is hardly any effective disease-curing strategy because of uncertainty in aetiology. Animal model is an excellent tool to investigate the mechanism, prevention and treatment on diseases. Currently, although several TMJ-OA animal models have been established, there are almost no comparative studies on different models, which poses a great challenge for selecting suitable models. OBJECTIVE To compare three TMJ-OA induction methods and assess their applicability considering pathological changes in the cartilage, subchondral bone, osteoclasts, and synovium. METHODS Murine models were employed and followed for 3 and 6 weeks after experimental procedures (surgery, injection, crossbite). The TMJ changes were evaluated by Safranin-O/Fast green staining, immunofluorescence staining, micro-CT, TRAP staining, and HE staining. RESULTS In the Surgery group, a pronounced drop in bone volume fraction was observed. In the Injection group, chondrocytes were mostly disordered or arranged in clusters and a substantial increase in the OARSI score and osteoclasts was found. The OARSI score and osteoclasts also increased significantly in the Crossbite group, although to a lower extent compared with injection. CONCLUSION Osteoarthritis-like changes were observed in all models. Concerning the applicability of the different induction methods, surgery might be an important resource for the assessment of post-traumatic TMJ-OA and subchondral bone changes in early stages. Injection induces a severe end-stage osteoarthritis in a short time and provides model basis for advanced TMJ-OA. Crossbite might be more reasonable model to explore the pathogenesis mechanism of temporomandibular arthritis due to occlusal disorders.
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Affiliation(s)
- Wenxiu Yuan
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China.,Lab for Aging Research, State Key Laboratory of Biotherapy and National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, China
| | - Yange Wu
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China.,Lab for Aging Research, State Key Laboratory of Biotherapy and National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, China
| | - Xueman Zhou
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China.,Lab for Aging Research, State Key Laboratory of Biotherapy and National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, China
| | - Yingcheng Zheng
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China.,Lab for Aging Research, State Key Laboratory of Biotherapy and National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, China
| | - Jun Wang
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Jin Liu
- Lab for Aging Research, State Key Laboratory of Biotherapy and National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, China
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Tudorachi NB, Totu EE, Fifere A, Ardeleanu V, Mocanu V, Mircea C, Isildak I, Smilkov K, Cărăuşu EM. The Implication of Reactive Oxygen Species and Antioxidants in Knee Osteoarthritis. Antioxidants (Basel) 2021; 10:985. [PMID: 34205576 PMCID: PMC8233827 DOI: 10.3390/antiox10060985] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2021] [Revised: 06/11/2021] [Accepted: 06/17/2021] [Indexed: 12/16/2022] Open
Abstract
Knee osteoarthritis (KOA) is a chronic multifactorial pathology and a current and essential challenge for public health, with a negative impact on the geriatric patient's quality of life. The pathophysiology is not fully known; therefore, no specific treatment has been found to date. The increase in the number of newly diagnosed cases of KOA is worrying, and it is essential to reduce the risk factors and detect those with a protective role in this context. The destructive effects of free radicals consist of the acceleration of chondrosenescence and apoptosis. Among other risk factors, the influence of redox imbalance on the homeostasis of the osteoarticular system is highlighted. The evolution of KOA can be correlated with oxidative stress markers or antioxidant status. These factors reveal the importance of maintaining a redox balance for the joints and the whole body's health, emphasizing the importance of an individualized therapeutic approach based on antioxidant effects. This paper aims to present an updated picture of the implications of reactive oxygen species (ROS) in KOA from pathophysiological and biochemical perspectives, focusing on antioxidant systems that could establish the premises for appropriate treatment to restore the redox balance and improve the condition of patients with KOA.
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Affiliation(s)
- Nicoleta Bianca Tudorachi
- Faculty of Medicine, “Ovidius” University of Constanța, Mamaia Boulevard 124, 900527 Constanța, Romania; (N.B.T.); (V.A.)
| | - Eugenia Eftimie Totu
- Faculty of Applied Chemistry and Material Science, University Politehnica of Bucharest, 1–5 Polizu Street, 011061 Bucharest, Romania
| | - Adrian Fifere
- Centre of Advanced Research in Bionanoconjugates and Biopolymers Department, “Petru Poni” Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487 Iasi, Romania
| | - Valeriu Ardeleanu
- Faculty of Medicine, “Ovidius” University of Constanța, Mamaia Boulevard 124, 900527 Constanța, Romania; (N.B.T.); (V.A.)
| | - Veronica Mocanu
- Faculty of Pharmacy, Grigore T. Popa University of Medicine and Pharmacy Iasi, 700115 Iasi, Romania; (V.M.); (C.M.)
| | - Cornelia Mircea
- Faculty of Pharmacy, Grigore T. Popa University of Medicine and Pharmacy Iasi, 700115 Iasi, Romania; (V.M.); (C.M.)
| | - Ibrahim Isildak
- Faculty of Chemistry-Metallurgy, Department of Bioengineering, Yildiz Technical University, Istanbul 34220, Turkey;
| | - Katarina Smilkov
- Faculty of Medical Sciences, Division of Pharmacy, Department of Applied Pharmacy, Goce Delcev University, Krste Misirkov Street, No. 10-A, 2000 Stip, North Macedonia;
| | - Elena Mihaela Cărăuşu
- Faculty of Dental Medicine, “Grigore T. Popa” University of Medicine and Pharmacy, “Nicolae Leon” Building, 13 Grigore Ghica Street, 700259 Iasi, Romania;
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10
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Calcified cartilage revealed in whole joint by X-ray phase contrast imaging. OSTEOARTHRITIS AND CARTILAGE OPEN 2021; 3:100168. [DOI: 10.1016/j.ocarto.2021.100168] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Accepted: 04/09/2021] [Indexed: 11/19/2022] Open
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11
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Van Buiten CB, Wu G, Lam YY, Zhao L, Raskin I. Elemental iron modifies the redox environment of the gastrointestinal tract: A novel therapeutic target and test for metabolic syndrome. Free Radic Biol Med 2021; 168:203-213. [PMID: 33831549 PMCID: PMC8544024 DOI: 10.1016/j.freeradbiomed.2021.03.032] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 02/25/2021] [Accepted: 03/24/2021] [Indexed: 12/21/2022]
Abstract
Metabolic syndrome (MetS, i.e., type 2 diabetes and obesity) is often associated with dysbiosis, inflammation, and leaky gut syndrome, which increase the content of oxygen and reactive oxygen species (ROS) in the gastrointestinal (GI) tract. Using near-infrared fluorescent, in situ imaging of ROS, we evaluated the effects of oral administration of elemental iron powder (Fe0) on luminal ROS in the GI tract and related these changes to glucose metabolism and the gut microbiome. C57Bl/6J mice fed low-fat or high-fat diets and gavaged with Fe0 (2.5 g per kg), in both single- and repeat-doses, demonstrated decreased levels of luminal ROS. Fourteen days of repeated Fe0 administration reduced hyperglycemia and improved glucose tolerance in the obese and hyperglycemic animals compared to the untreated obese controls and reduced the relative amount of iron oxides in the feces, which indicated an increased redox environment of the GI tract. We determined that Fe0 administration can also be used as a diagnostic assay to assess the GI microenvironment. Improved metabolic outcomes and decreased gastrointestinal ROS in Fe0-treated, high-fat diet-fed animals correlated with the increase in a co-abundance group of beneficial bacteria, including Lactobacillus, and the suppression of detrimental populations, including Oscillibacter, Peptococcus, and Intestinimonas. Daily Fe0 treatment also increased the relative abundance of amplicon sequence variants that lacked functional enzymatic antioxidant systems, which is consistent with the ability of Fe0 to scavenge ROS and oxygen in the GI, thus favoring the growth of oxygen-sensitive bacteria. These findings delineate a functional role for antioxidants in modification of the GI microenvironment and subsequent reversal of metabolic dysfunction.
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Affiliation(s)
- Charlene B Van Buiten
- Department of Food Science and Human Nutrition, College of Health and Human Sciences, Colorado State University, Fort Collins, CO, 80525, USA; Department of Plant Biology, School of Environmental and Biological Sciences, Rutgers University, New Brunswick, NJ, 08901, USA.
| | - Guojun Wu
- Department of Biochemistry and Microbiology, School of Environmental and Biological Sciences, Rutgers University, New Brunswick, NJ, 08901, USA; Center for Microbiome, Nutrition and Health, New Jersey Institute for Food, Nutrition and Health, Rutgers University, New Brunswick, NJ, 80901, USA
| | - Yan Y Lam
- Department of Biochemistry and Microbiology, School of Environmental and Biological Sciences, Rutgers University, New Brunswick, NJ, 08901, USA; Center for Microbiome, Nutrition and Health, New Jersey Institute for Food, Nutrition and Health, Rutgers University, New Brunswick, NJ, 80901, USA
| | - Liping Zhao
- Department of Biochemistry and Microbiology, School of Environmental and Biological Sciences, Rutgers University, New Brunswick, NJ, 08901, USA; Center for Microbiome, Nutrition and Health, New Jersey Institute for Food, Nutrition and Health, Rutgers University, New Brunswick, NJ, 80901, USA
| | - Ilya Raskin
- Department of Plant Biology, School of Environmental and Biological Sciences, Rutgers University, New Brunswick, NJ, 08901, USA
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12
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Ter Voert CEM, Kour RYN, van Teeffelen BCJ, Ansari N, Stok KS. Contrast-enhanced micro-computed tomography of articular cartilage morphology with ioversol and iomeprol. J Anat 2020; 237:1062-1071. [PMID: 32683740 DOI: 10.1111/joa.13271] [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: 07/17/2019] [Revised: 06/09/2020] [Accepted: 06/10/2020] [Indexed: 11/29/2022] Open
Abstract
Non-ionic, low-osmolar contrast agents (CAs) used for computed tomography, such as Optiray (ioversol) and Iomeron (iomeprol), are associated with the reduced risk of adverse reactions and toxicity in comparison with ionic CAs, such as Hexabrix. Hexabrix has previously been used for imaging articular cartilage but has been commercially discontinued. This study aimed to evaluate the efficacy of Optiray and Iomeron as alternatives for visualisation of articular cartilage in small animal joints using contrast-enhanced micro-computed tomography (CECT). For this purpose, mouse femora were immersed in different concentrations (20%-50%) of Optiray 350 or Iomeron 350 for periods of time starting at five minutes. The femoral condyles were scanned ex vivo using CECT, and regions of articular cartilage manually contoured to calculate mean attenuation at each time point and concentration. For both CAs, a 30% CA concentration produced a mean cartilage attenuation optimally distinct from both bone and background signal, whilst 5-min immersion times were sufficient for equilibration of CA absorption. Additionally, plugs of bovine articular cartilage were digested by chondroitinase ABC to produce a spectrum of glycosaminoglycan (GAG) content. These samples were immersed in CA and assessed for any correlation between mean attenuation and GAG content. No significant correlation was found between attenuation and cartilage GAG content for either CAs. In conclusion, Optiray and Iomeron enable high-resolution morphological assessment of articular cartilage in small animals using CECT; however, they are not indicative of GAG content.
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Affiliation(s)
- Colet E M Ter Voert
- Department of Biomedical Engineering, The University of Melbourne, Parkville, Vic., Australia
| | - R Y Nigel Kour
- Department of Biomedical Engineering, The University of Melbourne, Parkville, Vic., Australia
| | - Bente C J van Teeffelen
- Department of Biomedical Engineering, The University of Melbourne, Parkville, Vic., Australia
| | - Niloufar Ansari
- Department of Biomedical Engineering, The University of Melbourne, Parkville, Vic., Australia
| | - Kathryn S Stok
- Department of Biomedical Engineering, The University of Melbourne, Parkville, Vic., Australia
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Li L, Liu F, Huang W, Wang J, Wan Y, Li M, Pang Y, Yin Z. Ricolinostat (ACY-1215) inhibits VEGF expression via PI3K/AKT pathway and promotes apoptosis in osteoarthritic osteoblasts. Biomed Pharmacother 2019; 118:109357. [PMID: 31548177 DOI: 10.1016/j.biopha.2019.109357] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Revised: 08/09/2019] [Accepted: 08/14/2019] [Indexed: 01/07/2023] Open
Abstract
Osteoarthritis (OA) is involved in these pathophysiological changes of articular cartilage, subchondral bone and synovium. As a selective HDAC6 inhibitor, Ricolinostat (ACY-1215) has demonstrated chondroprotective effects in OA. However, its efficacy remains unclear in subchondral bone. In this study, we found that the mRNA and protein levels of HDAC6 were elevated in human OA osteoblasts in vitro. PI3K/AKT signaling pathway was suppressed with downregulation of VEGF expression in osteoblasts after ACY-1215 treatment. ACY-1215 promoted apoptosis of OA osteoblast in a concentration-dependent manner, and the expression of apoptosis-related proteins was also changed by activating caspase pathway. Moreover, western blotting showed decreased expression of MMP9 and MMP13 in IL-1β-induced chondrocytes after co-culture with ACY-1215-stimulated osteoblasts. These data of immunohistochemistry and micro-CT from OA model mice also demonstrated the weak staining of MMPs in cartilage and prevention of aberrant subchondral bone formation after ACY-1215 injection. Therefore, high expression of HDAC6 in osteoblasts also contributed to the OA progression, and our study provided a new evidence that HDAC6 inhibitor may be a potential therapeutic drug for OA.
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Affiliation(s)
- Lei Li
- Department of Orthopaedics, The First Affiliated Hospital of Anhui Medical University, #269 Jixi Road, Hefei, Anhui, China
| | - Fuen Liu
- Department of Orthopaedics, The First Affiliated Hospital of Anhui Medical University, #269 Jixi Road, Hefei, Anhui, China
| | - Wei Huang
- Department of Orthopaedics, The First Affiliated Hospital of Anhui Medical University, #269 Jixi Road, Hefei, Anhui, China
| | - Jun Wang
- Department of Orthopaedics, The First Affiliated Hospital of Anhui Medical University, #269 Jixi Road, Hefei, Anhui, China
| | - Yunpeng Wan
- Department of Orthopaedics, The First Affiliated Hospital of Anhui Medical University, #269 Jixi Road, Hefei, Anhui, China
| | - Meng Li
- Department of Orthopaedics, The First Affiliated Hospital of University of Science and Technology of China, #17 Lujiang Raod, Hefei, Anhui, China
| | - Yiqun Pang
- Department of Radiology, The First Affiliated Hospital of University of Science and Technology of China, #17 Lujiang Raod, Hefei, Anhui, China
| | - Zongsheng Yin
- Department of Orthopaedics, The First Affiliated Hospital of Anhui Medical University, #269 Jixi Road, Hefei, Anhui, China.
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14
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Gatenholm B, Lindahl C, Brittberg M, Stadelmann VA. Spatially matching morphometric assessment of cartilage and subchondral bone in osteoarthritic human knee joint with micro-computed tomography. Bone 2019; 120:393-402. [PMID: 30529213 DOI: 10.1016/j.bone.2018.12.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Revised: 11/30/2018] [Accepted: 12/06/2018] [Indexed: 01/25/2023]
Abstract
OBJECTIVE The objective of this study was to develop a reproducible and semi-automatic method based on micro computed tomography (microCT) to analyze cartilage and bone morphology of human osteoarthritic knee joints in spatially matching regions of interest. MATERIALS AND METHODS Tibial plateaus from randomly selected patients with advanced osteoarthritis (OA) who underwent total knee arthroplasty surgery were microCT scanned once fresh and once after staining with Hexabrix. The articular surface was determined manually in the first scan. Total articular surface, defect surface and cartilage surface were computed by triangulation of the cartilage surface and the spatially corresponding subchondral bone regions were automatically generated and the standard cortical bone and trabecular bone morphometric indices were computed. RESULTS The method to identify cartilage surface and defects was successfully validated against photographic examinations. The microCT measurements of the cartilage defect were also verified by conventional histopathology using safranin O-stained sections. Cartilage thickness and volume was significantly lower for OA condyle compared with healthy condyle. Bone fraction, bone tissue mineral density, cortical density and trabecular thickness differed significantly depending on the level of cartilage damage. CONCLUSION This new microCT imaging workflow can be used for reproducible quantitative evaluation of articular cartilage damage and the associated changes in subchondral bone morphology in osteoarthritic joints with a relatively high throughput compared to manual contouring. This methodology can be applied to gain better understanding of the OA disease progress in large cohorts.
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Affiliation(s)
- Birgitta Gatenholm
- Department of Orthopaedics, Institute of Clinical Sciences, The Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden; Department of Orthopaedics, Sahlgrenska University Hospital, Mölndal, Sweden
| | - Carl Lindahl
- Department of Clinical Chemistry and Transfusion Medicine, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Mats Brittberg
- Department of Orthopaedics, Institute of Clinical Sciences, The Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden; Region Halland Orthopaedics, Hallands Sjukhus, Kungsbacka, Sweden
| | - Vincent A Stadelmann
- SCANCO Medical AG, Brüttisellen, Switzerland; Department of Research and Development, Schulthess Klinik, Zürich, Switzerland.
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Newton MD, Hartner SE, Gawronski K, Davenport EJ, Timmons SC, Baker KC, Maerz T. Nondestructive, indirect assessment of the biomechanical properties of the rat intervertebral disc using contrast-enhanced μCT. J Orthop Res 2018; 36:2030-2038. [PMID: 29314237 DOI: 10.1002/jor.23850] [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: 07/20/2017] [Accepted: 12/24/2017] [Indexed: 02/04/2023]
Abstract
Mechanical characterization of the intervertebral disc involves labor-intensive and destructive experimental methodology. Contrast-enhanced micro-computed tomography is a nondestructive imaging modality for high-resolution visualization and glycosaminoglycan quantification of cartilaginous tissues. The purpose of this study was to determine whether anionic and cationic contrast-enhanced micro-computed tomography of the intervertebral disc can be used to indirectly assess disc mechanical properties in an ex vivo model of disc degeneration. L3/L4 motion segments were dissected from female Lewis rats. To deplete glycosaminoglycan, samples were treated with 0 U/ml (Control) or 5 U/ml papain. Contrast-enhanced micro-computed tomography was performed following incubation in 40% Hexabrix (anionic) or 30 mg I/ml CA4+ (cationic) for 24 h (n = 10/contrast agent/digestion group). Motion segments underwent cyclic mechanical testing to determine compressive and tensile modulus, stiffness, and hysteresis. Glycosaminoglycan content was determined using the dimethylmethylene blue assay. Correlations between glycosaminoglycan content, contrast-enhanced micro-computed tomography attenuation, and mechanical properties were assessed via the Pearson correlation. The predictive accuracy of attenuation on compressive properties was assessed via repeated random sub-sampling cross validation. Papain digestion produced significant decreases in glycosaminoglycan content and corresponding differences in attenuation and mechanical properties. Attenuation correlated significantly to glycosaminoglycan content and to all compressive mechanical properties using both Hexabrix and CA4+ . Predictive linear regression models demonstrated a predictive accuracy of attenuation on compressive modulus and stiffness of 79.8-86.0%. Contrast-enhanced micro-computed tomography was highly predictive of compressive mechanical properties in an ex vivo simulation of disc degeneration and may represent an effective modality for indirectly assessing disc compressive properties. © 2018 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 36:2030-2038, 2018.
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Affiliation(s)
- Michael D Newton
- Orthopaedic Research Laboratory, Beaumont Health, Royal Oak, Michigan
| | | | - Karissa Gawronski
- Orthopaedic Research Laboratory, Beaumont Health, Royal Oak, Michigan
| | - Erik J Davenport
- Department of Natural Sciences, Lawrence Technological University, Southfield, Michigan
| | - Shannon C Timmons
- Department of Natural Sciences, Lawrence Technological University, Southfield, Michigan
| | - Kevin C Baker
- Orthopaedic Research Laboratory, Beaumont Health, Royal Oak, Michigan.,Department of Orthopaedic Surgery, Oakland University - William Beaumont School of Medicine, Rochester, Michigan
| | - Tristan Maerz
- Orthopaedic Research Laboratory, Beaumont Health, Royal Oak, Michigan.,Department of Orthopaedic Surgery, Oakland University - William Beaumont School of Medicine, Rochester, Michigan.,Department of Orthopaedic Surgery, University of Michigan, 109 Zina Pitcher Place, 48109, Ann Arbor, Michigan
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16
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Photoacoustic imaging of synovial tissue hypoxia in experimental post-traumatic osteoarthritis. PROGRESS IN BIOPHYSICS AND MOLECULAR BIOLOGY 2018; 148:12-20. [PMID: 29601835 DOI: 10.1016/j.pbiomolbio.2018.03.009] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Revised: 02/27/2018] [Accepted: 03/27/2018] [Indexed: 01/08/2023]
Abstract
OBJECTIVES This pilot study aimed to investigate the feasibility of non-invasively assessing synovial tissue hypoxia in vivo using photoacoustic (PA) imaging in a post-traumatic osteoarthritis model and explore its correlation with OA severity. METHODS The three-dimensional vasculature structure and oxygenation level of synovial tissues of destabilization of the medial meniscus (DMM)-induced osteoarthritis (OA) mice were longitudinally monitored using PA imaging. Vascular volume/tissue volume (%) and tissue oxygen saturation (sO2) were validated against results obtained by established Power Doppler (PD) imaging and dynamic changes of inhaled O2 concentration respectively. PA changes were correlated with the histological grading of cartilage damages. RESULTS PA-measurements of vascularity and sO2 demonstrated a strong correlation with localized blood flow detected by PD imaging (r = 0.506, p < 0.001) and inhaled O2 concentration. DMM knees exhibited much more vascularity in synovial tissue at 4 months after surgery (median 11.3%, IQR: 10.7-15.5%) than the intact knees at time zero (median:5.1%, IQR:3.8-6.8%, p < 0.001) as well as the sham-operated knees (median: 4%, IQR: 3.75-5.45%, p = 0.017). Paradoxically, synovial tissue sO2 was significantly lower in DDM knees (median: 37.7%, IQR: 36.4-40.6%) than both the intact (47.1%, IQR: 41.9-49.8% p = 0.001) and sham-operated knees (45.1% IQR: 45.1-52.4%, p = 0.017). The PA-detected synovial tissue hypoxia correlated with the severity of cartilage loss in DMM mice (rho = -0.597, p = 0.031). CONCLUSION Here, we demonstrated PA imaging can be implemented for non-invasive imaging of the synovial tissue. Under PA imaging, synovitis in OA was characterized by increased angiogenesis and synovial tissue hypoxia; the latter was associated with the severity of OA.
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17
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Duan L, Zhang W, Zhang F, Cai H. Myrtol improves post-traumatic knee osteoarthritis by regulation of reactive oxygen species, transforming growth factor β1 and apoptosis in a mouse model. Exp Ther Med 2017; 15:393-399. [PMID: 29250157 DOI: 10.3892/etm.2017.5367] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2016] [Accepted: 02/10/2017] [Indexed: 12/21/2022] Open
Abstract
The present study tested whether myrtol improves post-traumatic knee osteoarthritis (PTKO) by regulating the reactive oxygen species (ROS), transforming growth factor β1 (TGF-β1) and apoptosis in a mouse model. PTKO model mice were administered with 150, 300 or 450 mg/kg myrtol for 8 weeks. ELISA analysis was used to measure tumor necrosis factor-α, interleukin-6, malondialdehyde, superoxide dismutase, reactive oxygen species and TGF-β1 levels. Caspase-3 and Bax protein expressions were analyzed using western blot analysis. In the current study, treatment with myrtol improved the tissue damage and osteoarthritis score, while it also reversed the subchondral bone thickness, subchondral bone density, trabecular bone volume/relative trabecular bone volume ratio and trabecular bone spacing in PTKO mice. The activity of tumor necrosis factor α, interleukin-6, TGF-β1, malondialdehyde, superoxide dismutase and ROS were effectively inhibited, and the protein expression of caspase-3 and Bax were clearly suppressed by treatment with myrtol in a mouse model of PTKO. In conclusion, the results demonstrated that myrtol treatment improved PTKO through the suppression of inflammation, oxidative stress, ROS, TGF-β1 and Bax/caspase-3 in mice, and myrtol may be a potential agent for clinical therapy.
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Affiliation(s)
- Liqun Duan
- Department of Orthopedics, Anhui Provincial Hospital, Hefei, Anhui 230001, P.R. China
| | - Wenzhi Zhang
- Department of Orthopedics, Anhui Provincial Hospital, Hefei, Anhui 230001, P.R. China
| | - Feng Zhang
- Department of Orthopedics, Anhui Provincial Hospital, Hefei, Anhui 230001, P.R. China
| | - Haiping Cai
- Department of Orthopedics, Anhui Provincial Hospital, Hefei, Anhui 230001, P.R. China
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18
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Association of COL1A1 rs1800012 polymorphism with musculoskeletal degenerative diseases: a meta-analysis. Oncotarget 2017; 8:75488-75499. [PMID: 29088884 PMCID: PMC5650439 DOI: 10.18632/oncotarget.20797] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Accepted: 08/23/2017] [Indexed: 12/22/2022] Open
Abstract
It has been reported that the single nucleotide polymorphism (SNP) rs1800012 in COL1A1 gene might be linked to the susceptibility of musculoskeletal degenerative diseases, such as osteoarthritis (OA) and intervertebral disc degeneration (IVDD). However, the data from different studies is contradictory. Here we aimed to comprehensively summarize and clarify the relationship between the SNP and musculoskeletal degenerative diseases. Seven eligible studies including 1339 cases and 5406 controls were screened out from PubMed, Web Of Science and Cochrane library databases. Significant association was identified in sub group analysis of IVDD in homozygote model (GG versus TT: OR = 0.33, 95% CI 0.14–0.78, P = 0.012), heterozygote model (GT versus TT: OR = 0.29, 95% CI 0.11–0.72, P = 0.008) and dominant model (GG/GT versus TT: OR = 0.31, 95% CI 0.13–0.74, P = 0.008). Additionally, significant relationship was also found in sub group analysis of severe degree of IVDD in homozygote model (GG versus TT: OR = 0.37, 95% CI 0.15–0.91, P = 0.031), heterozygote model (GT versus TT: OR = 0.33, 95% CI 0.13–0.87,P = 0.024) and dominant model (GG/GT versus TT: OR = 0.36, 95% CI 0.14–0.88, P = 0.025). Although no significance was observed, there is a trend that the more G allele at COL1A1 rs1800012 site, the less possibility of IVDD and severe IVDD would happen. Our results indicate that COL1A1 rs1800012 polymorphism associates with the susceptibility of IVDD. However, this polymorphism may not be associated with OA risk.
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19
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Allen J, Imbert I, Havelin J, Henderson T, Stevenson G, Liaw L, King T. Effects of Treadmill Exercise on Advanced Osteoarthritis Pain in Rats. Arthritis Rheumatol 2017; 69:1407-1417. [PMID: 28320059 PMCID: PMC5489381 DOI: 10.1002/art.40101] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Accepted: 03/14/2017] [Indexed: 12/22/2022]
Abstract
OBJECTIVE Exercise is commonly recommended for patients with osteoarthritis (OA) pain. However, whether exercise is beneficial in ameliorating ongoing pain that is persistent, resistant to nonsteroidal antiinflammatory drugs (NSAIDs), and associated with advanced OA is unknown. METHODS Rats treated with intraarticular (IA) monosodium iodoacetate (MIA) or saline underwent treadmill exercise or remained sedentary starting 10 days postinjection. Tactile sensory thresholds and weight bearing were assessed, followed by radiography at weekly intervals. After 4 weeks of exercise, ongoing pain was assessed using conditioned place preference (CPP) to IA or rostral ventromedial medulla (RVM)-administered lidocaine. The possible role of endogenous opioids in exercise-induced pain relief was examined by systemic administration of naloxone. Knee joints were collected for micro-computed tomography (micro-CT) analysis to examine pathologic changes to subchondral bone and metaphysis of the tibia. RESULTS Treadmill exercise for 4 weeks reversed MIA-induced tactile hypersensitivity and weight asymmetry. Both IA and RVM lidocaine D35, administered post-MIA, induced CPP in sedentary but not exercised MIA-treated rats, indicating that exercise blocks MIA-induced ongoing pain. Naloxone reestablished weight asymmetry in MIA-treated rats undergoing exercise and induced conditioned place aversion, indicating that exercise-induced pain relief is dependent on endogenous opioids. Exercise did not alter radiographic evidence of OA. However, micro-CT analysis indicated that exercise did not block lateral subchondral bone loss or trabecular bone loss in the metaphysis, but did block MIA-induced medial bone loss. CONCLUSION These findings support the conclusion that exercise induces pain relief in advanced, NSAID-resistant OA, likely through increased endogenous opioid signaling. In addition, treadmill exercise blocked MIA-induced bone loss in this model, indicating a potential bone-stabilizing effect of exercise on the OA joint.
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MESH Headings
- Anesthetics, Local/pharmacology
- Animals
- Arthralgia/physiopathology
- Arthritis, Experimental/chemically induced
- Arthritis, Experimental/diagnostic imaging
- Arthritis, Experimental/physiopathology
- Behavior, Animal/drug effects
- Disease Models, Animal
- Enzyme Inhibitors/toxicity
- Hyperalgesia/chemically induced
- Hyperalgesia/physiopathology
- Injections, Intra-Articular
- Iodoacetic Acid/toxicity
- Knee Joint/diagnostic imaging
- Knee Joint/drug effects
- Knee Joint/physiopathology
- Lidocaine/pharmacology
- Male
- Medulla Oblongata
- Naloxone/pharmacology
- Narcotic Antagonists/pharmacology
- Osteoarthritis, Knee/chemically induced
- Osteoarthritis, Knee/diagnostic imaging
- Osteoarthritis, Knee/physiopathology
- Physical Conditioning, Animal
- Rats
- Rats, Sprague-Dawley
- Tibia/diagnostic imaging
- Weight-Bearing
- X-Ray Microtomography
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Affiliation(s)
- Joshua Allen
- Department of Biomedical Sciences, College of Osteopathic Medicine, University of New England, Biddeford ME
| | - Ian Imbert
- Department of Biomedical Sciences, College of Osteopathic Medicine, University of New England, Biddeford ME
| | - Joshua Havelin
- Department of Biomedical Sciences, College of Osteopathic Medicine, University of New England, Biddeford ME
| | - Terry Henderson
- Center for Molecular Medicine, Maine Medical Center Research Institute, 81 Research Drive, Scarborough, ME 04074, USA
| | - Glenn Stevenson
- Department of Psychology, College of Arts and Sciences, University of New England, Biddeford ME
- Center for Excellence in the Neurosciences, University of New England, Biddeford ME
| | - Lucy Liaw
- Center for Molecular Medicine, Maine Medical Center Research Institute, 81 Research Drive, Scarborough, ME 04074, USA
| | - Tamara King
- Department of Biomedical Sciences, College of Osteopathic Medicine, University of New England, Biddeford ME
- Center for Excellence in the Neurosciences, University of New England, Biddeford ME
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20
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Lakin BA, Snyder BD, Grinstaff MW. Assessing Cartilage Biomechanical Properties: Techniques for Evaluating the Functional Performance of Cartilage in Health and Disease. Annu Rev Biomed Eng 2017; 19:27-55. [DOI: 10.1146/annurev-bioeng-071516-044525] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Benjamin A. Lakin
- Center for Advanced Orthopedic Studies, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts 02215
- Department of Biomedical Engineering, Boston University, Boston, Massachusetts 02215
| | - Brian D. Snyder
- Center for Advanced Orthopedic Studies, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts 02215
- Orthopedic Center, Children's Hospital, Boston, Massachusetts 02115
| | - Mark W. Grinstaff
- Department of Biomedical Engineering, Boston University, Boston, Massachusetts 02215
- Department of Chemistry, Boston University, Boston, Massachusetts 02215
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21
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Junbo W, Sijia L, Hongying C, Lei L, Pu W. Effect of low-magnitude different-frequency whole-body vibration on subchondral trabecular bone microarchitecture, cartilage degradation, bone/cartilage turnover, and joint pain in rabbits with knee osteoarthritis. BMC Musculoskelet Disord 2017; 18:260. [PMID: 28619022 PMCID: PMC5472960 DOI: 10.1186/s12891-017-1579-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/31/2016] [Accepted: 05/14/2017] [Indexed: 02/05/2023] Open
Abstract
Backgroud Whole-body vibration(WBV) has been suggested for the prevention of subchondral bone loss of knee osteoarthritis (OA) . This study examined the effects of different frequency of whole-body vibration on subchondral trabecular bone microarchitecture, cartilage degradation and metabolism of the tibia and femoral condyle bone, and joint pain in an anterior cruciate ligament transection (ACLT)–induced knee osteoarthritisrabbit model. Method Ninety adult rabbits were divided into six groups: all groups received unilateral ACLT; Group 1, ACLT only; Group 2, 5 Hz WBV; Group 3, 10 Hz WBV; Group 4, 20 Hz WBV; Group 5, 30 Hz WBV; and Group 6, 40 Hz WBV. Pain was tested via weight-bearing asymmetry. Subchondral trabecular bone microarchitecture was examined using in vivo micro-computed tomography. Knee joint cartilage was evaluated by gross morphology, histology, and ECM gene expression level (aggrecan and type II collagen [CTX-II]). Serum bone-specific alkaline phosphatase, N-mid OC, cartilage oligometric protein, CPII, type I collagen, PIIANP, G1/G2 aggrecan levels, and urinary CTX-II were analyzed. Results After 8 weeks of low-magnitude WBV, the lower frequency (10 Hz and 20 Hz) WBV treatment decreased joint pain and cartilage resorption, accelerated cartilage formation, delayed cartilage degradation especially at the 20 Hz regimen. However, the higher frequencies (30 Hz and 40 Hz) had worse effects, with worse limb function and cartilage volume as well as higher histological scores and cartilage resorption. In contrast, both prevented loss of trabeculae and increased bone turnover. No significant change was observed in the 5 Hz WBV group. Conclusion Our data demonstrate that the lower frequencies (10 Hz and 20 Hz) of low-magnitude WBV increased bone turnover, delayed cartilage degeneration, and caused a significant functional change of the OA-affected limb in ACLT-induced OA rabbit model but did not reverse OA progression after 8 weeks of treatment.
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Affiliation(s)
- Wang Junbo
- Department of Orthopaedics, West China Hospital, Sichuan University, GuoXue Road 37, 610041, Chengdu, Sichuan, People's Republic of China
| | - Liu Sijia
- Rehabilitation Medicine Center, West China Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China
| | - Chen Hongying
- Key Laboratory of Rehabilitation Medicine in Sichuan, Chengdu, Sichuan, People's Republic of China
| | - Liu Lei
- Department of Orthopaedics, West China Hospital, Sichuan University, GuoXue Road 37, 610041, Chengdu, Sichuan, People's Republic of China.
| | - Wang Pu
- Department of rehabilitation medicine, Ruijin hospital, Shanghai Jiaotong University School of Medicine, Shanghai, People's Republic of China. .,Department of Rehabilitation Science, Shanghai Jiaotong University School of Medicine, Shanghai, People's Republic of China. .,Rui Jin Rehabilitation Hospital, Shanghai, People's Republic of China.
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22
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Hayashi S, Kamei N, Ikuta Y, Shimizu R, Ishikawa M, Adachi N, Ochi M. Chondrocyte Cell-Sheet Transplantation for Treating Monoiodoacetate-Induced Arthritis in Rats. Tissue Eng Part C Methods 2017; 23:346-356. [DOI: 10.1089/ten.tec.2017.0129] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Affiliation(s)
- Seiju Hayashi
- Department of Orthopaedic Surgery, Graduate School of Biomedical and Health Science, Hiroshima University, Hiroshima, Japan
| | - Naosuke Kamei
- Department of Orthopaedic Surgery, Graduate School of Biomedical and Health Science, Hiroshima University, Hiroshima, Japan
| | - Yasunari Ikuta
- Department of Orthopaedic Surgery, Graduate School of Biomedical and Health Science, Hiroshima University, Hiroshima, Japan
| | - Ryo Shimizu
- Department of Orthopaedic Surgery, Graduate School of Biomedical and Health Science, Hiroshima University, Hiroshima, Japan
| | - Masakazu Ishikawa
- Department of Orthopaedic Surgery, Graduate School of Biomedical and Health Science, Hiroshima University, Hiroshima, Japan
| | - Nobuo Adachi
- Department of Orthopaedic Surgery, Graduate School of Biomedical and Health Science, Hiroshima University, Hiroshima, Japan
| | - Mitsuo Ochi
- Department of Orthopaedic Surgery, Graduate School of Biomedical and Health Science, Hiroshima University, Hiroshima, Japan
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Newton MD, Hartner SE, Timmons S, Delaney ND, Pirrone MG, Baker KC, Maerz T. Contrast-enhanced μCT of the intervertebral disc: A comparison of anionic and cationic contrast agents for biochemical and morphological characterization. J Orthop Res 2017; 35:1067-1075. [PMID: 27415967 DOI: 10.1002/jor.23364] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Accepted: 07/02/2016] [Indexed: 02/04/2023]
Abstract
The objective of this study was to quantify and compare the contrast-enhancing properties of the anionic contrast agent ioxaglate/Hexabrix, and cationic contrast agent CA4+ for biochemical and morphological characterization of the intervertebral disc (IVD) via μCT. Optimal contrast agent concentrations were determined by incubating rat lumbar IVDs in dilutions of Hexabrix-320 (20%, 30%, 40%, and 50%) and CA4+ (10, 20, 30, and 40 mg I/ml). μCT imaging was performed at 70 kVp, 114 μA, and 250 ms integration time, 12 μm voxel size. The kinetics of contrast enhancement were quantified with cumulative incubations for 0.5, 1, 2, 12, 16, 20, and 24 h using both agents. Agreement in morphological quantification was assessed via serial scans of the same IVDs. Correlation of attenuation to glycosaminoglycan (GAG) content was determined by enzymatic digestion of IVDs, subsequent μCT imaging, and GAG quantification via dimethylmethylene blue assay. Forty percent Hexabrix and 30 mg I/ml CA4+ were chosen as optimal concentrations. Hexabrix enabled greater delineation of the IVD from surrounding tissues, and CA4+ had the lowest uptake in surrounding soft tissue. Twenty-four hour incubation was sufficient for >99% equilibration of both agents. A high level of agreement was observed in the quantification of IVD volume (ICC = 0.951, r = 0.997) and height (ICC = 0.947, r = 0.991). Both agents exhibited strong linear correlations between μCT attenuation and GAG content (Hexabrix: r = -0.940; CA4+ : r = 0.887). Both agents enable biochemical and morphological quantification of the IVD via contrast-enhanced μCT and are effective tools for preclinical characterization. © 2016 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 35:1067-1075, 2017.
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Affiliation(s)
- Michael D Newton
- Orthopaedic Research Laboratory, Beaumont Health, 3811W Thirteen Mile Road, Royal Oak, Michigan, 48073
| | - Samantha E Hartner
- Orthopaedic Research Laboratory, Beaumont Health, 3811W Thirteen Mile Road, Royal Oak, Michigan, 48073
| | - Shannon Timmons
- Department of Natural Sciences, Lawrence Technological University, Southfield, Michigan
| | - Nathan D Delaney
- Department of Natural Sciences, Lawrence Technological University, Southfield, Michigan
| | - Michael G Pirrone
- Department of Natural Sciences, Lawrence Technological University, Southfield, Michigan
| | - Kevin C Baker
- Orthopaedic Research Laboratory, Beaumont Health, 3811W Thirteen Mile Road, Royal Oak, Michigan, 48073.,Department of Orthopaedic Surgery, Oakland University-William Beaumont School of Medicine, Rochester, Michigan
| | - Tristan Maerz
- Orthopaedic Research Laboratory, Beaumont Health, 3811W Thirteen Mile Road, Royal Oak, Michigan, 48073.,Department of Orthopaedic Surgery, Oakland University-William Beaumont School of Medicine, Rochester, Michigan
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Shiguetomi-Medina JM, Ramirez-Gl JL, Stødkilde-Jørgensen H, Møller-Madsen B. Systematized water content calculation in cartilage using T1-mapping MR estimations: design and validation of a mathematical model. J Orthop Traumatol 2016; 18:217-220. [PMID: 27771808 PMCID: PMC5585083 DOI: 10.1007/s10195-016-0433-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Accepted: 10/08/2016] [Indexed: 12/16/2022] Open
Abstract
Background Up to 80 % of cartilage is water; the rest is collagen fibers and proteoglycans. Magnetic resonance (MR) T1-weighted measurements can be employed to calculate the water content of a tissue using T1 mapping. In this study, a method that translates T1 values into water content data was tested statistically. Materials and methods To develop a predictive equation, T1 values were obtained for tissue-mimicking gelatin samples. 1.5 T MRI was performed using inverse angle phase and an inverse sequence at 37 (±0.5) °C. Regions of interest were manually delineated and the mean T1 value was estimated in arbitrary units. Data were collected and modeled using linear regression. To validate the method, articular cartilage from six healthy pigs was used. The experiment was conducted in accordance with the Danish Animal Experiment Committee. Double measurements were performed for each animal. Ex vivo, all water in the tissue was extracted by lyophilization, thus allowing the volume of water to be measured. This was then compared with the predicted water content via Lin’s concordance correlation coefficient at the 95 % confidence level. Results The mathematical model was highly significant when compared to a null model (p < 0.0001). 97.3 % of the variation in water content can be explained by absolute T1 values. Percentage water content could be predicted as 0.476 + (T1 value) × 0.000193 × 100 %. We found that there was 98 % concordance between the actual and predicted water contents. Conclusion The results of this study demonstrate that MR data can be used to predict percentage water contents of cartilage samples. Level of evidence 3 (case-control study).
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Affiliation(s)
- J M Shiguetomi-Medina
- Orthopaedic Research Laboratory, Aarhus University Hospital NBG, Aarhus University, Noerrebrogade 44 Building 1A, 8000, Aarhus C, Denmark.
| | - J L Ramirez-Gl
- Department of Clinical Epidemiology and Public Health, Facultad de Medicina, Universidad Autónoma de San Luis Potosi, Venustiano Carranza 2045, 78210, San Luis Potosi, SLP, Mexico
| | - H Stødkilde-Jørgensen
- The MR Research Center, Aarhus University Hospital, Skejby, Brendstrupgaardsvej 100, 8200, Aarhus N, Denmark
| | - B Møller-Madsen
- Department of Children's Orthopaedics, Aarhus University Hospital NBG, Noerrebrogade 44, 8000, Aarhus C, Denmark
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25
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Willett NJ, Thote T, Hart M, Moran S, Guldberg RE, Kamath RV. Quantitative pre-clinical screening of therapeutics for joint diseases using contrast enhanced micro-computed tomography. Osteoarthritis Cartilage 2016; 24:1604-12. [PMID: 27155345 DOI: 10.1016/j.joca.2016.04.021] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Revised: 03/30/2016] [Accepted: 04/27/2016] [Indexed: 02/07/2023]
Abstract
OBJECTIVE The development of effective therapies for cartilage protection has been limited by a lack of efficient quantitative cartilage imaging modalities in pre-clinical in vivo models. Our objectives were two-fold: first, to validate a new contrast-enhanced 3D imaging analysis technique, equilibrium partitioning of an ionic contrast agent-micro computed tomography (EPIC-μCT), in a rat medial meniscal transection (MMT) osteoarthritis (OA) model; and second, to quantitatively assess the sensitivity of EPIC-μCT to detect the effects of matrix metalloproteinase inhibitor (MMPi) therapy on cartilage degeneration. METHODS Rats underwent MMT surgery and tissues were harvested at 1, 2, and 3 weeks post-surgery or rats received an MMPi or vehicle treatment and tissues harvested 3 weeks post-surgery. Parameters of disease progression were evaluated using histopathology and EPIC-μCT. Correlations and power analyses were performed to compare the techniques. RESULTS EPIC-μCT was shown to provide simultaneous 3D quantification of multiple parameters, including cartilage degeneration and osteophyte formation. In MMT animals treated with MMPi, OA progression was attenuated, as measured by 3D parameters such as lesion volume and osteophyte size. A post-hoc power analysis showed that 3D parameters for EPIC-μCT were more sensitive than 2D parameters requiring fewer animals to detect a therapeutic effect of MMPi. 2D parameters were comparable between EPIC-μCT and histopathology. CONCLUSION This study demonstrated that EPIC-μCT has high sensitivity to provide 3D structural and compositional measurements of cartilage and bone in the joint. EPIC-μCT can be used in combination with histology to provide a comprehensive analysis to screen new potential therapies.
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Affiliation(s)
- N J Willett
- George W. Woodruff School of Mechanical Engineering, Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, USA.
| | - T Thote
- Wallace H. Coulter Department of Biomedical Engineering, Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, USA.
| | - M Hart
- AbbVie Bioresearch Center, Worcester, MA, USA.
| | - S Moran
- Wallace H. Coulter Department of Biomedical Engineering, Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, USA.
| | - R E Guldberg
- George W. Woodruff School of Mechanical Engineering, Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, USA.
| | - R V Kamath
- AbbVie Bioresearch Center, Worcester, MA, USA.
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Mansour JM, Lee Z, Welter JF. Nondestructive Techniques to Evaluate the Characteristics and Development of Engineered Cartilage. Ann Biomed Eng 2016; 44:733-49. [PMID: 26817458 PMCID: PMC4792725 DOI: 10.1007/s10439-015-1535-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2015] [Accepted: 12/12/2015] [Indexed: 12/16/2022]
Abstract
In this review, methods for evaluating the properties of tissue engineered (TE) cartilage are described. Many of these have been developed for evaluating properties of native and osteoarthritic articular cartilage. However, with the increasing interest in engineering cartilage, specialized methods are needed for nondestructive evaluation of tissue while it is developing and after it is implanted. Such methods are needed, in part, due to the large inter- and intra-donor variability in the performance of the cellular component of the tissue, which remains a barrier to delivering reliable TE cartilage for implantation. Using conventional destructive tests, such variability makes it near-impossible to predict the timing and outcome of the tissue engineering process at the level of a specific piece of engineered tissue and also makes it difficult to assess the impact of changing tissue engineering regimens. While it is clear that the true test of engineered cartilage is its performance after it is implanted, correlation of pre and post implantation properties determined non-destructively in vitro and/or in vivo with performance should lead to predictive methods to improve quality-control and to minimize the chances of implanting inferior tissue.
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Affiliation(s)
- Joseph M Mansour
- Departments of Mechanical and Aerospace Engineering, Case Western Reserve University, 2123 Martin Luther King Jr. Drive, Glennan Building Room 616A, Cleveland, OH, 44106, USA.
| | - Zhenghong Lee
- Radiology and Biomedical Engineering, Case Western Reserve University, Cleveland, OH, USA
| | - Jean F Welter
- Biology (Skeletal Research Center), Case Western Reserve University, Cleveland, OH, USA
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27
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Das NM, Hatsell S, Nannuru K, Huang L, Wen X, Wang L, Wang LH, Idone V, Meganck JA, Murphy A, Economides A, Xie L. In Vivo Quantitative Microcomputed Tomographic Analysis of Vasculature and Organs in a Normal and Diseased Mouse Model. PLoS One 2016; 11:e0150085. [PMID: 26910759 PMCID: PMC4765930 DOI: 10.1371/journal.pone.0150085] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2015] [Accepted: 02/09/2016] [Indexed: 02/07/2023] Open
Abstract
Non-bone in vivo micro-CT imaging has many potential applications for preclinical evaluation. Specifically, the in vivo quantification of changes in the vascular network and organ morphology in small animals, associated with the emergence and progression of diseases like bone fracture, inflammation and cancer, would be critical to the development and evaluation of new therapies for the same. However, there are few published papers describing the in vivo vascular imaging in small animals, due to technical challenges, such as low image quality and low vessel contrast in surrounding tissues. These studies have primarily focused on lung, cardiovascular and brain imaging. In vivo vascular imaging of mouse hind limbs has not been reported. We have developed an in vivo CT imaging technique to visualize and quantify vasculature and organ structure in disease models, with the goal of improved quality images. With 1–2 minutes scanning by a high speed in vivo micro-CT scanner (Quantum CT), and injection of a highly efficient contrast agent (Exitron nano 12000), vasculature and organ structure were semi-automatically segmented and quantified via image analysis software (Analyze). Vessels of the head and hind limbs, and organs like the heart, liver, kidneys and spleen were visualized and segmented from density maps. In a mouse model of bone metastasis, neoangiogenesis was observed, and associated changes to vessel morphology were computed, along with associated enlargement of the spleen. The in vivo CT image quality, voxel size down to 20 μm, is sufficient to visualize and quantify mouse vascular morphology. With this technique, in vivo vascular monitoring becomes feasible for the preclinical evaluation of small animal disease models.
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Affiliation(s)
- Nanditha Mohan Das
- Department of Skeletal Diseases – Therapeutic Focus Areas, Regeneron Pharmaceuticals Inc., Tarrytown, New York, United States of America
| | - Sarah Hatsell
- Department of Skeletal Diseases – Therapeutic Focus Areas, Regeneron Pharmaceuticals Inc., Tarrytown, New York, United States of America
| | - Kalyan Nannuru
- Department of Skeletal Diseases – Therapeutic Focus Areas, Regeneron Pharmaceuticals Inc., Tarrytown, New York, United States of America
| | - Lily Huang
- Department of Skeletal Diseases – Therapeutic Focus Areas, Regeneron Pharmaceuticals Inc., Tarrytown, New York, United States of America
| | - Xialing Wen
- Department of Skeletal Diseases – Therapeutic Focus Areas, Regeneron Pharmaceuticals Inc., Tarrytown, New York, United States of America
| | - Lili Wang
- Department of Skeletal Diseases – Therapeutic Focus Areas, Regeneron Pharmaceuticals Inc., Tarrytown, New York, United States of America
| | - Li-Hsien Wang
- Department of Skeletal Diseases – Therapeutic Focus Areas, Regeneron Pharmaceuticals Inc., Tarrytown, New York, United States of America
| | - Vincent Idone
- Department of Skeletal Diseases – Therapeutic Focus Areas, Regeneron Pharmaceuticals Inc., Tarrytown, New York, United States of America
| | - Jeffrey A. Meganck
- Research and Development, PerkinElmer, Hopkinton, Massachusetts, United States of America
| | - Andrew Murphy
- Department of Skeletal Diseases – Therapeutic Focus Areas, Regeneron Pharmaceuticals Inc., Tarrytown, New York, United States of America
| | - Aris Economides
- Department of Skeletal Diseases – Therapeutic Focus Areas, Regeneron Pharmaceuticals Inc., Tarrytown, New York, United States of America
| | - LiQin Xie
- Department of Skeletal Diseases – Therapeutic Focus Areas, Regeneron Pharmaceuticals Inc., Tarrytown, New York, United States of America
- * E-mail:
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Artuzi FE, Langie R, Abreu MCD, Quevedo AS, Corsetti A, Ponzoni D, Puricelli E. Rabbit model for osteoarthrosis of the temporomandibular joint as a basis for assessment of outcomes after intervention. Br J Oral Maxillofac Surg 2016; 54:e33-7. [PMID: 26872897 DOI: 10.1016/j.bjoms.2016.01.022] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2015] [Accepted: 01/18/2016] [Indexed: 11/15/2022]
Abstract
Osteoarthritis can be induced in the temporomandibular joint (TMJ) by primary or secondary trauma, or overloading of the joint. We have therefore systematically evaluated the histological progression of experimental osteoarthritis induced by a high concentration of monosodium iodoacetate into the rabbit TMJ. These findings may contribute to the establishment of a protocol to investigate the benefits of treatment of osteoarthritis of the TMJ. We used 21 male New Zealand rabbits; the 15 in the test group were given an intra-articular injection of monosodium iodoacetate 10mg/ml into the right TMJ and were killed after 60 (n=5), 80 (n=5), and 100 days (n=5). The six in the control group were given an injection of saline into the right TMJ. The assessment system for osteoarthritis based on six grades was used for the histological analysis of severity. The model was effective in producing histological changes in the cartilage consistent with those found in osteoarthritis at all time points. The within-group analysis indicated that the disease did not progress after 60 days. The successful induction of osteoarthritis in this way, its stabilisation after 60 days, and the appropriate size of the animal suggest that this experimental model is ideal for future studies of the effectiveness of treatment in osteoarthritis of the TMJ.
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Affiliation(s)
- Felipe Ernesto Artuzi
- Dentistry/Oral and Maxillofacial Surgery, School of Dentistry, Universidade Federal do Rio Grande do Sul (UFRGS) and Hospital de Clínicas de Porto Alegre (HCPA), Porto Alegre, RS, Brazil.
| | - Renan Langie
- Dentistry/Oral and Maxillofacial Surgery, School of Dentistry, Universidade Federal do Rio Grande do Sul (UFRGS) and Hospital de Clínicas de Porto Alegre (HCPA), Porto Alegre, RS, Brazil
| | - Maíra Cavallet de Abreu
- Dentistry/Oral and Maxillofacial Surgery, School of Dentistry, UFRGS and HCPA, Porto Alegre, RS, Brazil
| | | | - Adriana Corsetti
- Oral and Maxillofacial Surgery, School of Dentistry, UFRGS, Porto Alegre, RS, Brazil
| | - Deise Ponzoni
- School of Dentistry, UFRGS, Head of the Department of Oral and Maxillofacial Surgery, HCPA, Porto Alegre, RS, Brazil
| | - Edela Puricelli
- Oral and Maxillofacial Surgery, School of Dentistry, UFRGS and HCPA, Porto Alegre, RS, Brazil
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Prunty MC, Aung MH, Hanif AM, Allen RS, Chrenek MA, Boatright JH, Thule PM, Kundu K, Murthy N, Pardue MT. In Vivo Imaging of Retinal Oxidative Stress Using a Reactive Oxygen Species-Activated Fluorescent Probe. Invest Ophthalmol Vis Sci 2015; 56:5862-70. [PMID: 26348635 DOI: 10.1167/iovs.15-16810] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
PURPOSE In vivo methods for detecting oxidative stress in the eye would improve screening and monitoring of the leading causes of blindness: diabetic retinopathy, glaucoma, and age-related macular degeneration. METHODS To develop an in vivo biomarker for oxidative stress in the eye, we tested the efficacy of a reactive oxygen species (ROS)-activated, near-infrared hydrocyanine-800CW (H-800CW) fluorescent probe in light-induced retinal degeneration (LIRD) mouse models. After intravitreal delivery in LIRD rats, fluorescent microscopy was used to confirm that the oxidized H-800CW appeared in the same retinal layers as an established ROS marker (dichlorofluorescein). RESULTS Dose-response curves of increasing concentrations of intravenously injected H-800CW demonstrated linear increases in both intensity and total area of fundus hyperfluorescence in LIRD mice, as detected by scanning laser ophthalmoscopy. Fundus hyperfluorescence also correlated with the duration of light damage and functional deficits in vision after LIRD. In LIRD rats with intravitreal injections of H-800CW, fluorescent labeling was localized to photoreceptor inner segments, similar to dichlorofluorescein. CONCLUSIONS Hydrocyanine-800CW detects retinal ROS in vivo and shows potential as a novel biomarker for ROS levels in ophthalmic diseases.
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Affiliation(s)
- Megan C Prunty
- Department of Ophthalmology, Emory University, Atlanta, Georgia, United States
| | - Moe H Aung
- Department of Ophthalmology, Emory University, Atlanta, Georgia, United States
| | - Adam M Hanif
- Atlanta VA Center for Visual and Neurocognitive Rehabilitation, Atlanta, Georgia, United States
| | - Rachael S Allen
- Atlanta VA Center for Visual and Neurocognitive Rehabilitation, Atlanta, Georgia, United States
| | - Micah A Chrenek
- Department of Ophthalmology, Emory University, Atlanta, Georgia, United States
| | - Jeffrey H Boatright
- Department of Ophthalmology, Emory University, Atlanta, Georgia, United States 2Atlanta VA Center for Visual and Neurocognitive Rehabilitation, Atlanta, Georgia, United States
| | - Peter M Thule
- Biomedical Research, Atlanta VA Medical Center, Atlanta, Georgia, United States 4Department of Medicine, Emory University, Atlanta, Georgia, United States
| | | | - Niren Murthy
- Department of Bioengineering, University of California, Berkeley, California, United States
| | - Machelle T Pardue
- Department of Ophthalmology, Emory University, Atlanta, Georgia, United States 2Atlanta VA Center for Visual and Neurocognitive Rehabilitation, Atlanta, Georgia, United States
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Scales HE, Ierna M, Smith KM, Ross K, Meiklejohn GR, Patterson-Kane JC, McInnes IB, Brewer JM, Garside P, Maffia P. Assessment of murine collagen-induced arthritis by longitudinal non-invasive duplexed molecular optical imaging. Rheumatology (Oxford) 2015; 55:564-72. [PMID: 26475798 DOI: 10.1093/rheumatology/kev361] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2015] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE In the present study we evaluated the use of four commercially available fluorescent probes to monitor disease activity in murine CIA and its suppression during glucocorticoid therapy. METHODS Arthritis was induced in male DBA/1 mice by immunization with type II collagen in Complete Freund's Adjuvant, followed by a boost of collagen in PBS. Four fluorescent probes from PerkinElmer in combination [ProSense 750 fluorescent activatable sensor technology (FAST) with Neutrophil Elastase 680 FAST and MMPSense 750 FAST with CatK 680 FAST] were used to monitor disease development from day 5 through to day 40 post-immunization. Fluorescence generated in vivo by the probes was correlated with clinical and histological score and paw measurements. RESULTS The fluorescence intensity emitted by each probe was shown to correlate with the conventional measurements of disease. The highest degree of correlation was observed with ProSense 750 FAST in combination with Neutrophil Elastase 680 FAST; these probes were then used to successfully assess CIA suppression during dexamethasone treatment. CONCLUSION We have demonstrated that longitudinal non-invasive duplexed optical fluorescence imaging provides a simple assessment of arthritic disease activity within the joints of mice following the induction of CIA and may represent a powerful tool to monitor the efficacy of drug treatments in preclinical studies.
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Affiliation(s)
- Hannah E Scales
- Centre for Immunobiology, Institute of Infection, Immunity and Inflammation, College of Medical, Veterinary and Life Sciences, University of Glasgow, MD Biosciences
| | | | | | - Kirsty Ross
- Strathclyde Institute of Pharmacy & Biomedical Sciences, University of Strathclyde, Glasgow, UK and
| | | | - Janet C Patterson-Kane
- Centre for Immunobiology, Institute of Infection, Immunity and Inflammation, College of Medical, Veterinary and Life Sciences, University of Glasgow
| | - Iain B McInnes
- Centre for Immunobiology, Institute of Infection, Immunity and Inflammation, College of Medical, Veterinary and Life Sciences, University of Glasgow
| | - James M Brewer
- Centre for Immunobiology, Institute of Infection, Immunity and Inflammation, College of Medical, Veterinary and Life Sciences, University of Glasgow
| | - Paul Garside
- Centre for Immunobiology, Institute of Infection, Immunity and Inflammation, College of Medical, Veterinary and Life Sciences, University of Glasgow
| | - Pasquale Maffia
- Centre for Immunobiology, Institute of Infection, Immunity and Inflammation, College of Medical, Veterinary and Life Sciences, University of Glasgow, Department of Pharmacy, University of Naples Federico II, Naples, Italy
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Mori H, Izawa T, Tanaka E. Smad3 Deficiency Leads to Mandibular Condyle Degradation via the Sphingosine 1-Phosphate (S1P)/S1P3 Signaling Axis. THE AMERICAN JOURNAL OF PATHOLOGY 2015; 185:2742-56. [DOI: 10.1016/j.ajpath.2015.06.015] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2014] [Revised: 05/25/2015] [Accepted: 06/02/2015] [Indexed: 01/09/2023]
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β2-Adrenergic signal transduction plays a detrimental role in subchondral bone loss of temporomandibular joint in osteoarthritis. Sci Rep 2015. [PMID: 26219508 PMCID: PMC4518212 DOI: 10.1038/srep12593] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
The present study tested whether activation of the sympathetic tone by aberrant joint loading elicits abnormal subchondral bone remodeling in temporomandibular joint (TMJ) osteoarthritis. Abnormal dental occlusion was created in experimental rats, which were then intraperitoneally injected by saline, propranolol or isoproterenol. The norepinephrine contents, distribution of sympathetic nerve fibers, expression of β-adrenergic receptors (β-ARs) and remodeling parameters in the condylar subchondral bone were investigated. Mesenchymal stem cells (MSCs) from condylar subchondral bones were harvested for comparison of their β-ARs, pro-osteoclastic gene expressions and pro-osteoclastic function. Increases in norepinephrine level, sympathetic nerve fiber distribution and β2-AR expression were observed in the condylar subchondral bone of experimental rats, together with subchondral bone loss and increased osteoclast activity. β-antagonist (propranolol) suppressed subchondral bone loss and osteoclast hyperfunction while β-agonist (isoproterenol) exacerbated those responses. MSCs from experimental condylar subchondral bone expressed higher levels of β2-AR and RANKL; norepinephrine stimulation further increased their RANKL expression and pro-osteoclastic function. These effects were blocked by inhibition of β2-AR or the PKA pathway. RANKL expression by MSCs decreased after propranolol administration and increased after isoproterenol administration. It is concluded that β2-AR signal-mediated subchondral bone loss in TMJ osteoarthritisis associated with increased RANKL secretion by MSCs.
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Khoury BM, Bigelow EMR, Smith LM, Schlecht SH, Scheller EL, Andarawis-Puri N, Jepsen KJ. The use of nano-computed tomography to enhance musculoskeletal research. Connect Tissue Res 2015; 56:106-19. [PMID: 25646568 PMCID: PMC4755519 DOI: 10.3109/03008207.2015.1005211] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Advances in computed tomography (CT) imaging are opening new avenues toward more precise characterization and quantification of connective tissue microarchitecture. In the last two decades, micro-computed tomography (microCT) has significantly augmented destructive methods for the 3D micro-analysis of tissue structure, primarily in the bone research field. Recently, microCT has been employed in combination with contrast agents to generate contrast-enhanced images of soft tissues that are otherwise difficult to visualize due to their native radiodensity. More recent advances in CT technology have enabled ultra-high resolution imaging by utilizing a more powerful nano-focused X-ray source, such as that found in nano-computed tomography (nanoCT) systems. NanoCT imaging has facilitated the expansion of musculoskeletal research by reducing acquisition time and significantly expanding the range of samples that can be imaged in terms of size, age and tissue-type (bone, muscle, tendon, cartilage, vessels and adipose tissue). We present the application and early results of nanoCT imaging in various tissue types and how this ultra-high resolution imaging modality is capable of characterizing microstructures at levels of details previously not possible. Contrast-enhanced imaging techniques to enable soft-tissue visualization and characterization are also outlined.
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Affiliation(s)
| | | | | | | | - Erica L. Scheller
- Department of Molecular & Integrative Physiology, University of Michigan, Ann Arbor, MI, USA
| | - Nelly Andarawis-Puri
- Department of Orthopaedics, Icahn School of Medicine at Mount Sinai, New York, NY, USA
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Abstract
Characterization of articular cartilage morphology and composition using microcomputed tomography (microCT) techniques requires the use of contrast agents to enhance X-ray attenuation of the tissue. This chapter describes the use of an anionic iodinated contrast agent at equilibrium with articular cartilage. In this technique, negatively charged contrast agent molecules distribute themselves inversely with respect to the negatively charged proteoglycans (PGs) within the cartilage tissue (Palmer et al. Proc Natl Acad Sci U S A 103:19255-19260, 2006). This relationship allows for assessment of cartilage degradation, as areas of high X-ray attenuation have been shown to correspond to areas of depleted PGs (Palmer et al. Proc Natl Acad Sci U S A 103:19255-19260, 2006; Xie et al. Osteoarthritis Cartilage 18:65-72, 2010).
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Affiliation(s)
- Angela S P Lin
- George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, 30332-0363, USA
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Boerckel JD, Mason DE, McDermott AM, Alsberg E. Microcomputed tomography: approaches and applications in bioengineering. Stem Cell Res Ther 2014; 5:144. [PMID: 25689288 PMCID: PMC4290379 DOI: 10.1186/scrt534] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Microcomputed tomography (microCT) has become a standard and essential tool for quantifying structure-function relationships, disease progression, and regeneration in preclinical models and has facilitated numerous scientific and bioengineering advancements over the past 30 years. In this article, we recount the early events that led to the initial development of microCT and review microCT approaches for quantitative evaluation of bone, cartilage, and cardiovascular structures, with applications in fundamental structure-function analysis, disease, tissue engineering, and numerical modeling. Finally, we address several next-generation approaches under active investigation to improve spatial resolution, acquisition time, tissue contrast, radiation dose, and functional and molecular information.
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Three-dimensional characterization of in vivo intervertebral disc degeneration using EPIC-μCT. Osteoarthritis Cartilage 2014; 22:1918-25. [PMID: 25151083 DOI: 10.1016/j.joca.2014.08.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2014] [Revised: 07/25/2014] [Accepted: 08/13/2014] [Indexed: 02/02/2023]
Abstract
OBJECTIVE Small animal models are commonly employed to study progression of and potential treatment techniques for degenerative disc disease (DDD), but assessment using conventional imaging techniques is challenging due to resolution. The objective of this study was to employ equilibrium partitioning of an ionic contrast agent micro computed tomography (EPIC - μCT) to map three-dimensional (3D) degenerative changes in the rabbit intervertebral disc (IVD). MATERIALS AND METHODS In vivo degeneration was induced surgically in 12 New Zealand White rabbits via percutaneous annular puncture and percutaneous nucleotomy. IVDs were harvested after 3 and 6 weeks. EPIC-μCT imaging was performed on fresh, IVDs before and after formalin fixation, and 3D IVD volumes were segmented. IVDs were histologically stained with Safranin-O/Fast-Green and Hematoxylin & Eosin (H&E). EPIC-μCT attenuation and 3D morphological measurements were assessed in healthy and degenerate IVDs and compared to qualitative grading and disc height measurement from histology. RESULTS EPIC-μCT caused pronounced contrast enhancement of the IVD. Annular puncture and nucleotomy produced mild and severe degenerative changes, respectively. IVD attenuation following contrast enhancement increased significantly in nucleotomized discs at 3 and 6 weeks. IVD attenuation correlated significantly with histologic score and disc height measurements. Disc height decreased most extensively in the posterior and lateral aspects of the IVD. 3D morphological measurements correlated strongly to IVD attenuation and were more sensitive to degenerative changes than histologic measurements. Formalin fixation reduced the attenuation of IVDs by ∼10%. CONCLUSION EPIC-μCT is sensitive to in vivo DDD induced by nucleotomy and provides a high resolution 3D method for mapping degenerative changes in rabbit IVDs.
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Das Neves Borges P, Forte A, Vincent T, Dini D, Marenzana M. Rapid, automated imaging of mouse articular cartilage by microCT for early detection of osteoarthritis and finite element modelling of joint mechanics. Osteoarthritis Cartilage 2014; 22:1419-28. [PMID: 25278053 PMCID: PMC4192140 DOI: 10.1016/j.joca.2014.07.014] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/05/2014] [Revised: 05/28/2014] [Accepted: 07/12/2014] [Indexed: 02/02/2023]
Abstract
OBJECTIVE Mouse articular cartilage (AC) is mostly assessed by histopathology and its mechanics is poorly characterised. In this study: (1) we developed non-destructive imaging for quantitative assessment of AC morphology and (2) evaluated the mechanical implications of AC structural changes. METHODS Knee joints obtained from naïve mice and from mice with osteoarthritis (OA) induced by destabilization of medial meniscus (DMM) for 4 and 12 weeks, were imaged by phosphotungstic acid (PTA) contrast enhanced micro-computed tomography (PTA-CT) and scored by conventional histopathology. Our software (Matlab) automatically segmented tibial AC, drew two regions centred on each tibial condyle and evaluated the volumes included. A finite element (FE) model of the whole mouse joint was implemented to evaluate AC mechanics. RESULTS Our method achieved rapid, automated analysis of mouse AC (structural parameters in <10 h from knee dissection) and was able to localise AC loss in the central region of the medial tibial condyle. AC thickness decreased by 15% at 4 weeks and 25% at 12 weeks post DMM surgery, whereas histopathology scores were significantly increased only at 12 weeks. FE simulations estimated that AC thinning at early-stages in the DMM model (4 weeks) increases contact pressures (+39%) and Tresca stresses (+43%) in AC. CONCLUSION PTA-CT imaging is a fast and simple method to assess OA in murine models. Once applied more extensively to confirm its robustness, our approach will be useful for rapidly phenotyping genetically modified mice used for OA research and to improve the current understanding of mouse cartilage mechanics.
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Affiliation(s)
| | - A.E. Forte
- Department of Mechanical Engineering, Imperial College London, London SW7 2AZ, UK
| | - T.L. Vincent
- Kennedy Institute of Rheumatology, University of Oxford, Oxford OX3 7HE, UK
| | - D. Dini
- Department of Mechanical Engineering, Imperial College London, London SW7 2AZ, UK
| | - M. Marenzana
- Department of Bioengineering, Imperial College London, London SW7 2AZ, UK,Kennedy Institute of Rheumatology, University of Oxford, Oxford OX3 7HE, UK,Address correspondence and reprint requests to: M. Marenzana, Department of Bioengineering, Imperial College London, South Kensington Campus, Royal School of Mines Building, London, UK. Tel: 44-(0)-20-7594-5311.
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Topographical variations in articular cartilage and subchondral bone of the normal rat knee are age-related. Ann Anat 2014; 196:278-85. [DOI: 10.1016/j.aanat.2014.04.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2014] [Revised: 04/24/2014] [Accepted: 04/28/2014] [Indexed: 11/19/2022]
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Qin J, Chow SKH, Guo A, Wong WN, Leung KS, Cheung WH. Low magnitude high frequency vibration accelerated cartilage degeneration but improved epiphyseal bone formation in anterior cruciate ligament transect induced osteoarthritis rat model. Osteoarthritis Cartilage 2014; 22:1061-7. [PMID: 24852700 DOI: 10.1016/j.joca.2014.05.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2014] [Revised: 05/07/2014] [Accepted: 05/12/2014] [Indexed: 02/02/2023]
Abstract
OBJECTIVES To evaluate the effects of low-magnitude high-frequency vibration (LMHFV) on degenerated articular cartilage and subchondral bone in anterior cruciate ligament transection (ACLT) induced osteoarthritis (OA) rat model. METHODS 6 months old female Sprague-Dawley rats received ACLT on right knee and randomly divided into treatment and control groups. OA developed 12 weeks after surgery. LMHFV (35 Hz, 0.3 g) treatment was given 20 min/day and 5 days/week. After 6, 12 and 18 weeks, six rats of each group were sacrificed at each time point and the right knees were harvested. OA grading score, distal femur cartilage volume (CV), subchondral bone morphology, elastic modulus of cartilage and functional changes between groups were analyzed. RESULTS Increased cartilage degradation (higher OA grading score) and worse functional results (lower duty cycle, regular index and higher limb idleness index) were observed after LMHFV treatment (P = 0.011, 0.020, 0.012 and 0.005, respectively). CV increased after LMHFV treatment (P = 0.019). Subchondral bone density increased with OA progress (P < 0.01). Increased BV/TV, Tb.N and decreased Tb.Sp were observed in distal femur epiphysis in LMHFV treatment group (P = 0.006, 0.018 and 0.011, respectively). CONCLUSION LMHFV accelerated cartilage degeneration and caused further functional deterioration of OA affected limb in ACLT-induced OA rat model. In contrast, LMHFV promoted bone formation in OA affected distal femur epiphysis, but did not reverse OA progression.
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Affiliation(s)
- J Qin
- Department of Orthopaedics and Traumatology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong Special Administrative Region.
| | - S K-H Chow
- Department of Orthopaedics and Traumatology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong Special Administrative Region.
| | - A Guo
- Department of Orthopaedics and Traumatology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong Special Administrative Region.
| | - W-N Wong
- Department of Orthopaedics and Traumatology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong Special Administrative Region.
| | - K-S Leung
- Department of Orthopaedics and Traumatology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong Special Administrative Region.
| | - W-H Cheung
- Department of Orthopaedics and Traumatology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong Special Administrative Region.
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Veronesi F, Torricelli P, Giavaresi G, Sartori M, Cavani F, Setti S, Cadossi M, Ongaro A, Fini M. In vivo effect of two different pulsed electromagnetic field frequencies on osteoarthritis. J Orthop Res 2014; 32:677-85. [PMID: 24501089 DOI: 10.1002/jor.22584] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/05/2013] [Accepted: 01/06/2014] [Indexed: 02/04/2023]
Abstract
Osteoarthritis (OA) is a joint pathology characterized by fibrillation, reduced cartilage thickness and subchondral bone sclerosis. There is evidence that pulsed electromagnetic fields (PEMFs) counteract OA progression, but the effect of two different PEMF frequencies has not yet been shown. The aim of this study was to test the effectiveness of PEMFs at two different frequencies (37 and 75 Hz) in a late OA stage in 21-month-old Guinea pigs. After 3 months of 6 h/day PEMF stimulation, histological and histomorphometric analyses of the knees were performed. At both frequencies, PEMFs significantly reduced histological cartilage score, fibrillation index (FI), subchondral bone thickness (SBT) and trabecular number (Tb.N) and increased trabecular thickness (Tb.Th) and separation (Tb.Sp) in comparison to the not treated SHAM group. However, PEMFs at 75 Hz produced significantly more beneficial effects on the histological score and FI than 37 Hz PEMFs. At 75 Hz, PEMFs counteracted cartilage thinning as demonstrated by a significantly higher cartilage thickness values than either those of the SHAM or 37 Hz PEMF-treated groups. Although in severe OA both PEMF frequencies were able to limit its progression, 75 Hz PEMF stimulation achieved the better results.
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Affiliation(s)
- F Veronesi
- Laboratory of Preclinical and Surgical Studies, Rizzoli Orthopedic Institute-IOR, via Di Barbiano 1/10, 40136, Bologna, Italy
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d'Arcy R, Tirelli N. Fishing for fire: strategies for biological targeting and criteria for material design in anti-inflammatory therapies. POLYM ADVAN TECHNOL 2014. [DOI: 10.1002/pat.3264] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Richard d'Arcy
- School of Medicine/Institute of Inflammation and Repair; University of Manchester; Manchester M13 9PT UK
| | - Nicola Tirelli
- School of Medicine/Institute of Inflammation and Repair; University of Manchester; Manchester M13 9PT UK
- School of Materials; University of Manchester; Manchester M13 9PT UK
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Liu X, Xu Y, Chen S, Tan Z, Xiong K, Li Y, Ye Y, Luo ZP, He F, Gong Y. Rescue of proinflammatory cytokine-inhibited chondrogenesis by the antiarthritic effect of melatonin in synovium mesenchymal stem cells via suppression of reactive oxygen species and matrix metalloproteinases. Free Radic Biol Med 2014; 68:234-46. [PMID: 24374373 DOI: 10.1016/j.freeradbiomed.2013.12.012] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/06/2013] [Revised: 12/04/2013] [Accepted: 12/12/2013] [Indexed: 10/25/2022]
Abstract
Cartilage repair by mesenchymal stem cells (MSCs) often occurs in diseased joints in which the inflamed microenvironment impairs chondrogenic maturation and causes neocartilage degradation. In this environment, melatonin exerts an antioxidant effect by scavenging free radicals. This study aimed to investigate the anti-inflammatory and chondroprotective effects of melatonin on human MSCs in a proinflammatory cytokine-induced arthritic environment. MSCs were induced toward chondrogenesis in the presence of interleukin-1β (IL-1β) or tumor necrosis factor α (TNF-α) with or without melatonin. Levels of intracellular reactive oxygen species (ROS), hydrogen peroxide, antioxidant enzymes, and cell viability were then assessed. Deposition of glycosaminoglycans and collagens was also determined by histological analysis. Gene expression of chondrogenic markers and matrix metalloproteinases (MMPs) was assessed by real-time polymerase chain reaction. In addition, the involvement of the melatonin receptor and superoxide dismutase (SOD) in chondrogenesis was investigated using pharmacologic inhibitors. The results showed that melatonin significantly reduced ROS accumulation and increased SOD expression. Both IL-1β and TNF-α had an inhibitory effect on the chondrogenesis of MSCs, but melatonin successfully restored the low expression of cartilage matrix and chondrogenic genes. Melatonin prevented cartilage degradation by downregulating MMPs. The addition of luzindole and SOD inhibitors abrogated the protective effect of melatonin associated with increased levels of ROS and MMPs. These results demonstrated that proinflammatory cytokines impair the chondrogenesis of MSCs, which was rescued by melatonin treatment. This chondroprotective effect was potentially correlated to decreased ROS, preserved SOD, and suppressed levels of MMPs. Thus, melatonin provides a new strategy for promoting cell-based cartilage regeneration in diseased or injured joints.
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Affiliation(s)
- Xiaozhen Liu
- School of Engineering, Sun Yat-sen University, Guangzhou 510006, China; Guangdong Provincial Key Laboratory of Sensor Technology and Biomedical Instruments, Sun Yat-sen University, Guangzhou 510006, China
| | - Yong Xu
- School of Engineering, Sun Yat-sen University, Guangzhou 510006, China; Guangdong Provincial Key Laboratory of Sensor Technology and Biomedical Instruments, Sun Yat-sen University, Guangzhou 510006, China
| | - Sijin Chen
- Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Zifang Tan
- School of Engineering, Sun Yat-sen University, Guangzhou 510006, China
| | - Ke Xiong
- Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Yan Li
- School of Engineering, Sun Yat-sen University, Guangzhou 510006, China; Guangdong Provincial Key Laboratory of Sensor Technology and Biomedical Instruments, Sun Yat-sen University, Guangzhou 510006, China
| | - Yun Ye
- School of Engineering, Sun Yat-sen University, Guangzhou 510006, China; Guangdong Provincial Key Laboratory of Sensor Technology and Biomedical Instruments, Sun Yat-sen University, Guangzhou 510006, China
| | - Zong-Ping Luo
- Orthopaedic Institute, Soochow University, Suzhou 215006, China; Department of Orthopaedics, First Affiliated Hospital of Soochow University, Suzhou 215006, China
| | - Fan He
- School of Engineering, Sun Yat-sen University, Guangzhou 510006, China; Orthopaedic Institute, Soochow University, Suzhou 215006, China; Department of Orthopaedics, First Affiliated Hospital of Soochow University, Suzhou 215006, China.
| | - Yihong Gong
- School of Engineering, Sun Yat-sen University, Guangzhou 510006, China; Guangdong Provincial Key Laboratory of Sensor Technology and Biomedical Instruments, Sun Yat-sen University, Guangzhou 510006, China.
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Jiao K, Zhang M, Niu L, Yu S, Zhen G, Xian L, Yu B, Yang K, Liu P, Cao X, Wang M. Overexpressed TGF-β in subchondral bone leads to mandibular condyle degradation. J Dent Res 2013; 93:140-7. [PMID: 24309371 DOI: 10.1177/0022034513513034] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Emerging evidence has implied that subchondral bone plays an important role during osteoarthritis (OA) pathology. This study was undertaken to investigate whether abnormalities of the condylar subchondral bone lead to temporomandibular joint (TMJ) OA. We used an osteoblast-specific mutant TGF-β1 transgenic mouse, the CED mouse, in which high levels of active TGF-β1 occur in bone marrow, leading to abnormal bone remodeling. Subchondral bone changes in the mandibular condyles were investigated by micro-CT, and alterations in TMJ condyles were confirmed by histopathological and immunohistochemical analysis. Abnormalities in the condylar subchondral bone, characterized as fluctuant bone mineral density and microstructure and increased but uncoupled activity of osteoclasts and osteoblasts, were apparent in the 1- and 4-month CED mouse groups, while obvious cartilage degradation, in the form of cell-free regions and proteoglycan loss, was observed in the 4-month CED group. In addition, increased numbers of apoptotic chondrocytes and MMP9- and VEGF-positive chondrocytes were observed in the condylar cartilage in the 4-month CED group, but not in the 1-month CED group, compared with their respective age-matched controls. This study demonstrated that progressive degradation of mandibular condylar cartilage could be induced by the abnormal remodeling of the underlying subchondral bone during TMJOA progression.
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Affiliation(s)
- K Jiao
- Department of Oral Anatomy and Physiology and TMD, School of Stomatology, Fourth Military Medical University, 145 Changlexi Road, Xi'an, 710032, China
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Water-content calculation in growth plate and cartilage using MR T1-mapping design and validation of a new method in a porcine model. Skeletal Radiol 2013; 42:1413-9. [PMID: 23842573 DOI: 10.1007/s00256-013-1674-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/21/2013] [Revised: 05/22/2013] [Accepted: 06/09/2013] [Indexed: 02/02/2023]
Abstract
OBJECTIVE There is a close relation between cartilage health and its hydration state. Current magnetic resonance methods allow visualizing this tissue. However, a quantitative analysis is more useful when studying disease. The purpose of this study was to quantify water content in cartilage using magnetic resonance without contrast agents. MATERIALS AND METHODS Water-content estimations using T1 magnetic resonance mapping were done first in eight gelatin samples where the water content was previously known. The same method was used in the physeal areas of eight skeletally immature 30-kg pigs. To calculate accuracy, T1 calculations were compared to dry-freeze, which is considered the gold standard because it can remove the total water content form a tissue. Four fresh cartilage and seven gelatin samples were dry-frozen. Water content obtained from dry-freeze was compared to the one calculated from T1 map values. A mathematical model and statistical analysis were used to calculate the predictive value of the method and its significance. RESULTS T1-map-based magnetic resonance method can calculate water content in cartilage with an accuracy of 97.3 %. We calculated a coefficient of variance for this method against dry-frozen sample of 3.68 (SD = 1.2) in gelatin samples, and 2.73 (SD = 1.3) in in vivo samples. Between two independent observers, the coefficient of variance was 0.053, which suggests it can be easily reproduced. CONCLUSIONS Magnetic resonance was able to calculate, with high accuracy, the cartilage water content using T1 mapping sequences.
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Mosher TJ, Walker EA, Petscavage-Thomas J, Guermazi A. Osteoarthritis year 2013 in review: imaging. Osteoarthritis Cartilage 2013; 21:1425-35. [PMID: 23891696 DOI: 10.1016/j.joca.2013.07.010] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/02/2013] [Revised: 06/24/2013] [Accepted: 07/13/2013] [Indexed: 02/02/2023]
Abstract
PURPOSE To review recent original research publications related to imaging of osteoarthritis (OA) and identify emerging trends and significant advances. METHODS Relevant articles were identified through a search of the PubMed database using the query terms "OA" in combination with "imaging", "radiography", "MRI", "ultrasound", "computed tomography", and "nuclear medicine"; either published or in press between March 2012 and March 2013. Abstracts were reviewed to exclude review articles, case reports, and studies not focused on imaging using routine clinical imaging measures. RESULTS Initial query yielded 932 references, which were reduced to 328 citations following the initial review. MRI (118 references) and radiography (129 refs) remain the primary imaging modalities in OA studies, with fewer reports using computed tomography (CT) (35 refs) and ultrasound (23 refs). MRI parametric mapping techniques remain an active research area (33 refs) with growth in T2*- and T1-rho mapping publications compared to prior years. Although the knee is the major joint studied (210 refs) there is interest in the hip (106 refs) and hand (29 refs). Imaging continues to focus on evaluation of cartilage (173 refs) and bone (119 refs). CONCLUSION Imaging plays a major role in OA research with publications continuing along traditional lines of investigation. Translational and clinical research application of compositional MRI techniques is becoming more common driven in part by the availability of T2 mapping data from the Osteoarthritis Initiative (OAI). New imaging techniques continue to be developed with a goal of identifying methods with greater specificity and responsiveness to changes in the joint, and novel functional neuroimaging techniques to study central pain. Publications related to imaging of OA continue to be heavily focused on quantitative and semiquantitative MRI evaluation of the knee with increasing application of compositional MRI techniques in the hip.
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Affiliation(s)
- T J Mosher
- Department of Radiology, Penn State Hershey Medical Center, Hershey, PA, USA.
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Abstract
Objective: We performed comprehensive proteomic analyses of articular cartilage by using the isobaric tags for relative and absolute quantitation (iTRAQ) method, and searched for candidate biomarkers for osteoarthritis (OA). Methods: Articular cartilage was collected from patients with OA or femoral neck fracture for the control group. Molecular variations were detected by the iTRAQ method, and quantitative analyses were performed by western blot. Results: Using the iTRAQ method, we identified 76 proteins with different expression levels in OA patients and the control group. Among these proteins, we selected LECT2 (leukocyte cell-derived chemotaxin-2), BAALC (brain and acute leukemia, cytoplasmic), and PRDX6 (peroxiredoxin-6), which had not been reported as biomarkers for OA. Conclusions: Use of these proteins in combination with conventional OA biomarkers may better reflect the grade and prognosis of OA.
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Affiliation(s)
- Daiki Ikeda
- Department of Orthopaedic Surgery, Fujita Health University Hospital , Toyoake, Aichi , Japan and
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Thote T, Lin ASP, Raji Y, Moran S, Stevens HY, Hart M, Kamath RV, Guldberg RE, Willett NJ. Localized 3D analysis of cartilage composition and morphology in small animal models of joint degeneration. Osteoarthritis Cartilage 2013; 21:1132-41. [PMID: 23747340 DOI: 10.1016/j.joca.2013.05.018] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2012] [Revised: 04/16/2013] [Accepted: 05/27/2013] [Indexed: 02/02/2023]
Abstract
OBJECTIVE Current histological scoring methods to evaluate efficacy of potential therapeutics for slowing or preventing joint degeneration are time-consuming and semi-quantitative in nature. Hence, there is a need to develop and standardize quantitative outcome measures to define sensitive metrics for studying potential therapeutics. The objectives of this study were to use equilibrium partitioning of an ionic contrast agent via Equilibrium Partitioning of an Ionic Contrast-Microcomputed tomography (EPIC-μCT) to quantitatively characterize morphological and compositional changes in the tibial articular cartilage in two distinct models of joint degeneration and define localized regions of interest to detect degenerative cartilage changes. MATERIALS AND METHODS The monosodium iodoacetate (MIA) and medial meniscal transection (MMT) rat models were used in this study. Three weeks post-surgery, tibiae were analyzed using EPIC-μCT and histology. EPIC-μCT allowed measurement of 3D morphological changes in cartilage thickness, volume and composition. RESULTS Extensive cartilage degeneration was observed throughout the joint in the MIA model after 3 weeks. In contrast, the MMT model showed more localized degeneration with regional thickening of the medial tibial plateau and a decrease in attenuation consistent with proteoglycan (PG) depletion. Focal lesions were also observed and 3D volume calculated as an additional outcome metric. CONCLUSIONS EPIC-μCT was used to quantitatively assess joint degeneration in two distinct preclinical models. The MMT model showed similar features to human Osteoarthritis (OA), including localized lesion formation and PG loss, while the MIA model displayed extensive cartilage degeneration throughout the joint. EPIC-μCT imaging provides a rapid and quantitative screening tool for preclinical evaluation of OA therapeutics.
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Affiliation(s)
- T Thote
- Wallace H. Coulter Department of Biomedical Engineering, Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, USA.
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Magalotti S, Gustafson T, Cao Q, Abendschein D, Pierce R, Berezin MY, Akers WJ. Evaluation of inflammatory response to acute ischemia using near-infrared fluorescent reactive oxygen sensors. Mol Imaging Biol 2013; 15:423-30. [PMID: 23378226 PMCID: PMC3940059 DOI: 10.1007/s11307-013-0614-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
PURPOSE Ischemia-related processes associated with the generation of inflammatory molecules such as reactive oxygen species (ROS) are difficult to detect at the acute stage before the physiologic and anatomic evidence of tissue damage is present. Evaluation of the inflammatory and healing response early after an ischemic event in vivo will aid in treatment selection and patient outcomes. We introduce a novel near-infrared hydrocyanine molecular probe for the detection of ROS as a marker of tissue response to ischemia and a precursor to angiogenesis and remodeling. The synthesized molecular probe, initially a non-fluorescent hydrocyanine conjugated to polyethylene glycol, converts to a highly fluorescent cyanine reporter upon oxidation. PROCEDURES The probe was applied in a preclinical mouse model for myocardial infarction, where ligation and removal of a portion of the femoral artery in the hindlimb resulted in temporary ischemia followed by angiogenesis and healing. RESULTS The observed increase in fluorescence intensity was approximately sixfold over 24 h in the ischemic tissue relative to the uninjured control limb and was attributed to the higher concentration of ROS in the ischemic tissue. CONCLUSIONS These results demonstrate the potential for non-invasive sensing for interrogating the inflammatory and healing response in ischemic tissue.
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Affiliation(s)
- Selena Magalotti
- Department of Radiology, Washington University School of Medicine, St. Louis, MO 63110
| | - Tiffany Gustafson
- Department of Radiology, Washington University School of Medicine, St. Louis, MO 63110
| | - Qian Cao
- Department of Radiology, Washington University School of Medicine, St. Louis, MO 63110
| | - Dana Abendschein
- Department of Internal Medicine, Washington University School of Medicine, St. Louis, MO 63110
| | - Richard Pierce
- Department of Internal Medicine, Washington University School of Medicine, St. Louis, MO 63110
| | - Mikhail Y. Berezin
- Department of Radiology, Washington University School of Medicine, St. Louis, MO 63110
| | - Walter J. Akers
- Department of Radiology, Washington University School of Medicine, St. Louis, MO 63110
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Choline, an alpha7 nicotinic acetylcholine receptor agonist, alleviates hyperalgesia in a rat osteoarthritis model. Neurosci Lett 2013; 548:291-5. [PMID: 23769729 DOI: 10.1016/j.neulet.2013.05.073] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2013] [Revised: 05/22/2013] [Accepted: 05/23/2013] [Indexed: 11/22/2022]
Abstract
It has been suggested that activation of alpha7 nicotinic acetylcholine receptors (α7nAChR) could alleviate acute and chronic pain in various abnormal pain models. However, it is unclear whether the stimulation of α7nAChRs has anti-hyperalgesic effects on osteoarthritis. Therefore, we tested whether choline, an α7nAChR agonist, could alleviate chronic inflammatory pain in an osteoarthritis model. Osteoarthritis was induced by injection of monoiodoacetic acid (MIA) into the synovial cavity of the knee joints in rats. Pain was assessed by responses to stimuli on the plantar surface: paw withdrawal threshold (PWT) by up-down methods using a series of von Frey filaments, and paw withdrawal latency (PWL) using radiation heat. Both PWT and PWL decreased after MIA injection, indicating development of mechanical and thermal hyperalgesia. Subsequent intraperitoneal choline injection increased both PWT and PWL. PWT increased in response to choline injections (5-50 mg/Kg) in a dose dependent manner. PWL increased significantly in a similar fashion in response to choline (20 and 50 mg/Kg). However, intraarticular injection of choline did not result in any change in PWT or PWL. Intrathecal choline increased PWT and PWL. The anti-hyperalgesic effect of intraperitoneal choline was completely blocked by methyllycaconitine when it was injected intrathecally 10 min before the choline treatment. These results show that choline could alleviate mechanical and heat hyperalgesia via spinal α7nAChR in the MIA-induced inflammation pain model.
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