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Rathnayake MSB, Boos MA, Farrugia BL, van Osch GJVM, Stok KS. Glycosaminoglycan-Mediated Interactions in Articular, Auricular, Meniscal, and Nasal Cartilage. Tissue Eng Part B Rev 2024. [PMID: 38613808 DOI: 10.1089/ten.teb.2023.0346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/15/2024]
Abstract
Glycosaminoglycans (GAGs) are ubiquitous components in the cartilage extracellular matrix (ECM). Ultrastructural arrangement of ECM and GAG-mediated interactions with collagen are known to govern the mechanics in articular cartilage, but these interactions are less clear in other cartilage types. Therefore, this article reviews the current literature on ultrastructure of articular, auricular, meniscal, and nasal septal cartilage, seeking insight into GAG-mediated interactions influencing mechanics. Ultrastructural features of these cartilages are discussed to highlight differences between them. GAG-mediated interactions are reviewed under two categories: interactions with chondrocytes and interactions with other fibrillar macromolecules of the ECM. Moreover, efforts to replicate GAG-mediated interactions to improve mechanical integrity of tissue-engineered cartilage constructs are discussed. In conclusion, studies exploring cartilage specific GAGs are poorly represented in the literature, and the ultrastructure of nasal septal and auricular cartilage is less studied compared with articular and meniscal cartilages. Understanding the contribution of GAGs in cartilage mechanics at the ultrastructural level and translating that knowledge to engineered cartilage will facilitate improvement of cartilage tissue engineering approaches.
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Affiliation(s)
- Manula S B Rathnayake
- Department of Biomedical Engineering, The University of Melbourne, Parkville, Australia
| | - Manuela A Boos
- Department of Biomedical Engineering, The University of Melbourne, Parkville, Australia
| | - Brooke L Farrugia
- Department of Biomedical Engineering, The University of Melbourne, Parkville, Australia
- Graeme Clark Institute for Biomedical Engineering, The University of Melbourne, Parkville, Australia
| | - Gerjo J V M van Osch
- Department of Otorhinolaryngology, Head and Neck Surgery and Department of Orthopaedics and Sports Medicine, Erasmus MC, University Medical Centre, Rotterdam, The Netherlands
- Department of Biomechanical Engineering, Faculty of Mechanical Engineering, Delft University of Technology, Delft, The Netherlands
| | - Kathryn S Stok
- Department of Biomedical Engineering, The University of Melbourne, Parkville, Australia
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2
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Campbell TM, Finzel S, Siddle H, Christensen R, Nielsen SM, Najm A, Otobo TM, Sahbudin I, Sinnathurai P, Stok KS, Touma Z, April KT, Grosskleg S, Tugwell P, Richards B. Navigating the path of progress: The OMERACT 2023 emerging leaders program. Semin Arthritis Rheum 2024; 66:152414. [PMID: 38447468 DOI: 10.1016/j.semarthrit.2024.152414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Accepted: 01/04/2024] [Indexed: 03/08/2024]
Abstract
OBJECTIVES The Outcome Measures in Rheumatology Clinical Trials (OMERACT) Emerging Leaders Program (ELP) aims to cultivate a cohort of skilled leaders within the OMERACT community empowering them with expertise and knowledge to help shape and steer the organization into the future. This publication highlights the significance of the ELP in driving leadership excellence, its impact on OMERACT's evolution, and the outcomes and learnings from the OMERACT 2023 ELP. METHODS Insights from the 2018 ELP report informed 2023 program improvements. Engagement was measured by attendance and WhatsApp interactions. Positive program aspects, areas for improvement and ideas for enhancing future ELPs were captured via anonymous survey and participant focus groups. RESULTS Engagement with the ELP was high with 9 participants, 96 % attendance at all workshops, 154 WhatsApp interactions. All program components were highly rated, with the highest being the 'Psychological Safety' and 'Methodology/Process/Politics' workshops. Future enhancements included creating further networking, connection and support activities, practical leadership and methodological skill development opportunities, and a new stream focussing on organisational advancement. CONCLUSIONS The 2023 OMERACT ELP was well received and successfully addressed areas previously identified as requiring improvement. New educational enhancements were valued, and the importance of fostering psychological safety at all levels was highlighted. The ELP fortifies OMERACT by nurturing a diverse array of skilled leaders who embody OMERACTs core values. Continuing to refine and evolve the ELP over time will help OMERACT sustain its global influence in patient-centered outcome research.
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Affiliation(s)
- T Mark Campbell
- Elisabeth Bruyère Hospital, Ottawa, ON, Canada; Bone and Joint Research Lab, Ottawa Hospital Research Institute, Ottawa, ON, Canada; Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada.
| | - Stephanie Finzel
- Department of Rheumatology and Clinical Immunology, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg im Breisgau, Germany
| | - Heidi Siddle
- Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, UK
| | - Robin Christensen
- Section for Biostatistics and Evidence-Based Research, The Parker Institute, Bispebjerg and Frederiksberg Hospital, Copenhagen, Denmark; Research Unit of Rheumatology, Department of Clinical Research, University of Southern Denmark, Odense University Hospital, Odense, Denmark
| | - Sabrina Mai Nielsen
- Section for Biostatistics and Evidence-Based Research, The Parker Institute, Bispebjerg and Frederiksberg Hospital, Copenhagen, Denmark; Research Unit of Rheumatology, Department of Clinical Research, University of Southern Denmark, Odense University Hospital, Odense, Denmark
| | - Aurelie Najm
- School of Infection & Immunity, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK
| | - Tarimobo M Otobo
- Department of Medical Imaging, Temerty Faculty of Medicine, University of Toronto, 263 McCaul Street 4th Floor, Toronto, Ontario M5T 1W7, Canada
| | - Ilfita Sahbudin
- NIHR Birmingham Biomedical Research Centre, University Hospitals Birmingham NHS Foundation Trust and Institute for Inflammation and Ageing, University of Birmingham, Birmingham, United Kingdom
| | - Premarani Sinnathurai
- Department of Rheumatology, Royal North Shore Hospital, Sydney NSW Australia; Sydney Musculoskeletal Health, University of Sydney, Sydney NSW Australia
| | - Kathryn S Stok
- Department of Biomedical Engineering, The University of Melbourne, Melbourne, Australia
| | - Zahi Touma
- University of Toronto Lupus Clinic, Centre for Prognosis Studies in Rheumatic Diseases, Toronto Western Hospital, Toronto, ON, Canada
| | - Karine Toupin April
- School of Rehabilitation Sciences, Faculty of Health Sciences, University of Ottawa, Ottawa, Canada; Department of Pediatrics, Faculty of Medicine, University of Ottawa, Ottawa, Canada; Children's Hospital of Eastern Ontario Research Institute, Ottawa, Canada; Institut du savoir Montfort, Ottawa, Canada
| | - Shawna Grosskleg
- OMERACT, Toronto, Canada and Faculty of Medicine, University of Ottawa, Ottawa, Canada
| | - Peter Tugwell
- University of Ottawa, Department of Medicine, Faculty of Medicine, K1H 8M5, Ottawa, Canada; Ottawa Hospital Research Institute, Clinical Epidemiology Program, K1Y 4E9, Ottawa, Canada; University of Ottawa, School of Epidemiology and Public Health, Faculty of Medicine, K1H 8M5, Ottawa, Canada; WHO Collaborating Centre for Knowledge Translation and Health Technology Assessment in Health Equity, Bruyère Research Institute, K1R 7G5, Ottawa, Canada
| | - Bethan Richards
- Department of Rheumatology, Royal Prince Alfred Hospital, Australia; Institute for Musculoskeletal Health, Sydney Local Health District, Australia; Sydney Musculoskeletal Health, University of Sydney, Australia
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Nie T, Venkatesh VS, Golub S, Stok KS, Hemmatian H, Desai R, Handelsman DJ, Zajac JD, Grossmann M, Davey RA. Estradiol increases cortical and trabecular bone accrual and bone strength in an adolescent male-to-female mouse model of gender-affirming hormone therapy. Bone Res 2024; 12:1. [PMID: 38212599 PMCID: PMC10784310 DOI: 10.1038/s41413-023-00308-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 11/28/2023] [Accepted: 12/05/2023] [Indexed: 01/13/2024] Open
Abstract
The effects of gender-affirming hormone therapy on the skeletal integrity and fracture risk in transitioning adolescent trans girls are unknown. To address this knowledge gap, we developed a mouse model to simulate male-to-female transition in human adolescents in whom puberty is first arrested by using gonadotrophin-releasing hormone analogs with subsequent estradiol treatment. Puberty was suppressed by orchidectomy in male mice at 5 weeks of age. At 3 weeks post-surgery, male-to-female mice were treated with a high dose of estradiol (~0.85 mg) by intraperitoneal silastic implantation for 12 weeks. Controls included intact and orchidectomized males at 3 weeks post-surgery, vehicle-treated intact males, intact females and orchidectomized males at 12 weeks post-treatment. Compared to male controls, orchidectomized males exhibited decreased peak bone mass accrual and a decreased maximal force the bone could withstand prior to fracture. Estradiol treatment in orchidectomized male-to-female mice compared to mice in all control groups was associated with an increased cortical thickness in the mid-diaphysis, while the periosteal circumference increased to a level that was intermediate between intact male and female controls, resulting in increased maximal force and stiffness. In trabecular bone, estradiol treatment increased newly formed trabeculae arising from the growth plate as well as mineralizing surface/bone surface and bone formation rate, consistent with the anabolic action of estradiol on osteoblast proliferation. These data support the concept that skeletal integrity can be preserved and that long-term fractures may be prevented in trans girls treated with GnRHa and a sufficiently high dose of GAHT. Further study is needed to identify an optimal dose of estradiol that protects the bone without adverse side effects.
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Affiliation(s)
- Tian Nie
- Department of Medicine, Austin Health, University of Melbourne, Heidelberg, VIC, 3084, Australia
| | - Varun S Venkatesh
- Department of Medicine, Austin Health, University of Melbourne, Heidelberg, VIC, 3084, Australia
| | - Suzanne Golub
- Department of Medicine, Austin Health, University of Melbourne, Heidelberg, VIC, 3084, Australia
| | - Kathryn S Stok
- Department of Biomedical Engineering, University of Melbourne, Parkville, VIC, 3010, Australia
| | - Haniyeh Hemmatian
- Department of Medicine, Austin Health, University of Melbourne, Heidelberg, VIC, 3084, Australia
| | - Reena Desai
- ANZAC Research Institute, University of Sydney and Andrology, Concord Repatriation General Hospital, Concord, NSW, 2137, Australia
| | - David J Handelsman
- ANZAC Research Institute, University of Sydney and Andrology, Concord Repatriation General Hospital, Concord, NSW, 2137, Australia
| | - Jeffrey D Zajac
- Department of Medicine, Austin Health, University of Melbourne, Heidelberg, VIC, 3084, Australia
| | - Mathis Grossmann
- Department of Medicine, Austin Health, University of Melbourne, Heidelberg, VIC, 3084, Australia
| | - Rachel A Davey
- Department of Medicine, Austin Health, University of Melbourne, Heidelberg, VIC, 3084, Australia.
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Schadow JE, Maxey D, Smith TO, Finnilä MAJ, Manske SL, Segal NA, Wong AKO, Davey RA, Turmezei T, Stok KS. Systematic review of computed tomography parameters used for the assessment of subchondral bone in osteoarthritis. Bone 2024; 178:116948. [PMID: 37926204 DOI: 10.1016/j.bone.2023.116948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 10/04/2023] [Accepted: 10/19/2023] [Indexed: 11/07/2023]
Abstract
OBJECTIVE To systematically review the published parameters for the assessment of subchondral bone in human osteoarthritis (OA) using computed tomography (CT) and gain an overview of current practices and standards. DESIGN A literature search of Medline, Embase and Cochrane Library databases was performed with search strategies tailored to each database (search from 2010 to January 2023). The search results were screened independently by two reviewers against pre-determined inclusion and exclusion criteria. Studies were deemed eligible if conducted in vivo/ex vivo in human adults (>18 years) using any type of CT to assess subchondral bone in OA. Extracted data from eligible studies were compiled in a qualitative summary and formal narrative synthesis. RESULTS This analysis included 202 studies. Four groups of CT modalities were identified to have been used for subchondral bone assessment in OA across nine anatomical locations. Subchondral bone parameters measuring similar features of OA were combined in six categories: (i) microstructure, (ii) bone adaptation, (iii) gross morphology (iv) mineralisation, (v) joint space, and (vi) mechanical properties. CONCLUSIONS Clinically meaningful parameter categories were identified as well as categories with the potential to become relevant in the clinical field. Furthermore, we stress the importance of quantification of parameters to improve their sensitivity and reliability for the evaluation of OA disease progression and the need for standardised measurement methods to improve their clinical value.
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Affiliation(s)
- Jemima E Schadow
- Department of Biomedical Engineering, The University of Melbourne, Melbourne, Australia.
| | - David Maxey
- Department of Radiology, Norfolk and Norwich University Hospitals NHS Foundation Trust, Norwich, United Kingdom.
| | - Toby O Smith
- Warwick Medical School, University of Warwick, United Kingdom.
| | - Mikko A J Finnilä
- Research Unit of Health Science and Technology, Faculty of Medicine, University of Oulu, Oulu, Finland.
| | - Sarah L Manske
- Department of Radiology, McCaig Institute for Bone and Joint Health, Cumming School of Medicine, University of Calgary, Calgary, Canada.
| | - Neil A Segal
- Department of Rehabilitation Medicine, The University of Kansas Medical Center, Kansas City, United States.
| | - Andy Kin On Wong
- Joint Department of Medical Imaging, University Health Network, Toronto, Canada; Schroeder's Arthritis Institute, Toronto General Hospital Research Institute, University Health Network, Toronto, Canada.
| | - Rachel A Davey
- Department of Medicine, Austin Health, University of Melbourne, Melbourne, Australia.
| | - Tom Turmezei
- Department of Radiology, Norfolk and Norwich University Hospitals NHS Foundation Trust, Norwich, United Kingdom; Norwich Medical School, University of East Anglia, Norwich, United Kingdom.
| | - Kathryn S Stok
- Department of Biomedical Engineering, The University of Melbourne, Melbourne, Australia.
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Al-Khoury Y, Finzel S, Figueiredo C, Burghardt AJ, Stok KS, Tam LS, Cheng I, Tse JJ, Manske SL. Erosion Identification in Metacarpophalangeal Joints in Rheumatoid Arthritis using High-Resolution Peripheral Quantitative Computed Tomography. J Vis Exp 2023. [PMID: 37870316 DOI: 10.3791/65802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2023] Open
Abstract
Bone erosions are a pathological feature of several forms of inflammatory arthritis including rheumatoid arthritis (RA). The increased presence and size of erosions are associated with poor outcomes, joint function, and disease progression. High-resolution peripheral quantitative computed tomography (HR-pQCT) provides unparalleled in vivo visualization of bone erosions. However, at this resolution, discontinuities in the cortical shell (cortical breaks) that are associated with normal physiological processes and pathology are also visible. The Study grouP for xtrEme Computed Tomography in Rheumatoid Arthritis previously used a consensus process to develop a definition of pathological erosion in HR-pQCT: a cortical break detected in at least two consecutive slices, in at least two perpendicular planes, non-linear in shape, with underlying trabecular bone loss. However, despite the availability of a consensus definition, erosion identification is a demanding task with challenges in inter-rater variability. The purpose of this work is to introduce a training tool to provide users with guidance on identifying pathological cortical breaks on HR-pQCT images for erosion analysis. The protocol presented here uses a custom-built module (Bone Analysis Module (BAM) - Training), implemented as an extension to an open-source image processing software (3D Slicer). Using this module, users can practice identifying erosions and compare their results to erosions annotated by expert rheumatologists.
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Affiliation(s)
- Yousif Al-Khoury
- Department of Radiology, McCaig Institute for Bone and Joint Health, University of Calgary; Department of Biomedical Engineering, University of Calgary
| | | | | | - Andrew J Burghardt
- Department of Radiology and Biomedical Imaging, University of California, San Francisco
| | - Kathryn S Stok
- Department of Biomedical Engineering, University of Melbourne
| | - Lai-Shan Tam
- Department of Medicine and Therapeutics, The Chinese University of Hong Kong
| | - Isaac Cheng
- Department of Medicine and Therapeutics, The Chinese University of Hong Kong
| | - Justin J Tse
- Department of Radiology, McCaig Institute for Bone and Joint Health, University of Calgary
| | - Sarah L Manske
- Department of Radiology, McCaig Institute for Bone and Joint Health, University of Calgary;
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Liu H, Durongbhan P, Davey CE, Stok KS. Image Registration in Longitudinal Bone Assessment Using Computed Tomography. Curr Osteoporos Rep 2023:10.1007/s11914-023-00795-6. [PMID: 37264231 PMCID: PMC10393902 DOI: 10.1007/s11914-023-00795-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 05/15/2023] [Indexed: 06/03/2023]
Abstract
PURPOSE OF REVIEW Rigid image registration is an important image processing tool for the assessment of musculoskeletal chronic disease. In this paper, we critically review applications of rigid image registration in terms of similarity measurement methods over the past three years (2019-2022) in the context of monitoring longitudinal changes to bone microstructure and mechanical properties using computed tomography. This review identifies critical assumptions and trade-offs underlying different similarity measurement methods used in image registration and demonstrates the effect of using different similarity measures on registration outcomes. RECENT FINDINGS Image registration has been used in recent studies for: correcting positional shifts between longitudinal scans to quantify changes to bone microstructural and mechanical properties over time, developing registration-based workflows for longitudinal assessment of bone properties in pre-clinical and clinical studies, and developing and validating registration techniques for longitudinal studies. In evaluating the recent literature, it was found that the assumptions at the root of different similarity measures used in rigid image registration are not always confirmed and reported. Each similarity measurement has its advantages and disadvantages, as well as underlying assumptions. Breaking these assumptions can lead to poor and inaccurate registration results. Thus, care must be taken with regards to the choice of similarity measurement and interpretation of results. We propose that understanding and verifying the assumptions of similarity measurements will enable more accurate and efficient quantitative assessments of structural changes over time.
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Affiliation(s)
- Han Liu
- Department of Biomedical Engineering, The University of Melbourne, Parkville, VIC, 3010, Australia
| | - 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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Lamandé SR, Ng ES, Cameron TL, Kung LHW, Sampurno L, Rowley L, Lilianty J, Patria YN, Stenta T, Hanssen E, Bell KM, Saxena R, Stok KS, Stanley EG, Elefanty AG, Bateman JF. Modeling human skeletal development using human pluripotent stem cells. Proc Natl Acad Sci U S A 2023; 120:e2211510120. [PMID: 37126720 PMCID: PMC10175848 DOI: 10.1073/pnas.2211510120] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Accepted: 04/04/2023] [Indexed: 05/03/2023] Open
Abstract
Chondrocytes and osteoblasts differentiated from induced pluripotent stem cells (iPSCs) will provide insights into skeletal development and genetic skeletal disorders and will generate cells for regenerative medicine applications. Here, we describe a method that directs iPSC-derived sclerotome to chondroprogenitors in 3D pellet culture then to articular chondrocytes or, alternatively, along the growth plate cartilage pathway to become hypertrophic chondrocytes that can transition to osteoblasts. Osteogenic organoids deposit and mineralize a collagen I extracellular matrix (ECM), mirroring in vivo endochondral bone formation. We have identified gene expression signatures at key developmental stages including chondrocyte maturation, hypertrophy, and transition to osteoblasts and show that this system can be used to model genetic cartilage and bone disorders.
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Affiliation(s)
- Shireen R. Lamandé
- Murdoch Children’s Research Institute, Parkville, VIC 3052, Australia
- Department of Paediatrics, University of Melbourne, Parkville, VIC 3052, Australia
- The Novo Nordisk Foundation Center for Stem Cell Medicine (reNEW), Murdoch Children’s Research Institute, Parkville, VIC 3052, Australia
| | - Elizabeth S. Ng
- Murdoch Children’s Research Institute, Parkville, VIC 3052, Australia
- Department of Paediatrics, University of Melbourne, Parkville, VIC 3052, Australia
- The Novo Nordisk Foundation Center for Stem Cell Medicine (reNEW), Murdoch Children’s Research Institute, Parkville, VIC 3052, Australia
| | - Trevor L. Cameron
- Murdoch Children’s Research Institute, Parkville, VIC 3052, Australia
| | - Louise H. W. Kung
- Murdoch Children’s Research Institute, Parkville, VIC 3052, Australia
| | - Lisa Sampurno
- Murdoch Children’s Research Institute, Parkville, VIC 3052, Australia
| | - Lynn Rowley
- Murdoch Children’s Research Institute, Parkville, VIC 3052, Australia
| | - Jinia Lilianty
- Murdoch Children’s Research Institute, Parkville, VIC 3052, Australia
- Department of Paediatrics, University of Melbourne, Parkville, VIC 3052, Australia
| | - Yudha Nur Patria
- Murdoch Children’s Research Institute, Parkville, VIC 3052, Australia
- Department of Paediatrics, University of Melbourne, Parkville, VIC 3052, Australia
- Department of Child Health, Universitas Gadjah Mada, Yogyakarta55281, Indonesia
| | - Tayla Stenta
- Murdoch Children’s Research Institute, Parkville, VIC 3052, Australia
| | - Eric Hanssen
- Ian Holmes Imaging Center and Department of Biochemistry and Pharmacology, Bio21 Institute, University of Melbourne, Parkville, VIC 3010, Australia
| | - Katrina M. Bell
- Murdoch Children’s Research Institute, Parkville, VIC 3052, Australia
| | - Ritika Saxena
- Murdoch Children’s Research Institute, Parkville, VIC 3052, Australia
- Department of Paediatrics, University of Melbourne, Parkville, VIC 3052, Australia
| | - Kathryn S. Stok
- Department of Biomedical Engineering, University of Melbourne, Parkville, VIC 3010, Australia
| | - Edouard G. Stanley
- Murdoch Children’s Research Institute, Parkville, VIC 3052, Australia
- Department of Paediatrics, University of Melbourne, Parkville, VIC 3052, Australia
- The Novo Nordisk Foundation Center for Stem Cell Medicine (reNEW), Murdoch Children’s Research Institute, Parkville, VIC 3052, Australia
| | - Andrew G. Elefanty
- Murdoch Children’s Research Institute, Parkville, VIC 3052, Australia
- Department of Paediatrics, University of Melbourne, Parkville, VIC 3052, Australia
- The Novo Nordisk Foundation Center for Stem Cell Medicine (reNEW), Murdoch Children’s Research Institute, Parkville, VIC 3052, Australia
| | - John F. Bateman
- Murdoch Children’s Research Institute, Parkville, VIC 3052, Australia
- Department of Paediatrics, University of Melbourne, Parkville, VIC 3052, Australia
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Boos MA, Ryan FA, Linnenschmidt F, Rathnayake MSB, Nowell CJ, Lamandé SR, Stok KS. A novel device for investigating structure-function relationships and mechanoadaptation of biological tissues. J Mech Behav Biomed Mater 2023; 142:105868. [PMID: 37119723 DOI: 10.1016/j.jmbbm.2023.105868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2022] [Revised: 04/16/2023] [Accepted: 04/22/2023] [Indexed: 05/01/2023]
Abstract
Exploring the structure-function relationships of cartilage on a microstructural level is crucial for tissue engineering approaches aiming to restore function. Therefore, a combination of mechanical testing with cell and tissue-level imaging would allow for longitudinal studying loading mechanisms, biological responses and mechanoadaptation of tissues at a microstructural level. This paper describes the design and validation of FELIX, a custom-built device for non-destructive image-guided micromechanical evaluation of biological tissues and tissue-engineered constructs. It combines multiphoton microscopy with non-destructive mechanical testing of native soft tissues. Ten silicone samples of the same size were mechanically tested with FELIX by different users to assess the repeatability and reproducibility. The results indicate that FELIX can successfully substitute mechanical testing protocols with a commercial device without compromising precision. Furthermore, FELIX demonstrated consistent results across repeated measurements, with very small deviations. Therefore, FELIX can be used to accurately measure biomechanical properties by different users for separate studies. Additionally, cell nuclei and collagen of porcine articular cartilage were successfully imaged under compression. Cell viability remained high in chondrocytes cultured in agarose over 21 days. Furthermore, there were no signs of contamination indicating a cell friendly, sterile environment for longitudinal studies. In conclusion, this work demonstrates that FELIX can consistently quantify mechanical measures without compromising precision. Furthermore, it is biocompatible allowing for longitudinal measurements.
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Affiliation(s)
- Manuela A Boos
- Department of Biomedical Engineering, The University of Melbourne, Parkville, VIC, Australia
| | - Frances A Ryan
- Department of Biomedical Engineering, The University of Melbourne, Parkville, VIC, Australia
| | - Felix Linnenschmidt
- Department of Biomedical Engineering, The University of Melbourne, Parkville, VIC, Australia; Department of Mechanical and Process Engineering, ETH Zurich, Zurich, Switzerland
| | - Manula S B Rathnayake
- Department of Biomedical Engineering, The University of Melbourne, Parkville, VIC, Australia
| | - Cameron J Nowell
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC, Australia
| | - Shireen R Lamandé
- Musculoskeletal Research, Murdoch Children's Research Institute, Parkville, VIC, Australia; Department of Paediatrics, 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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9
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Heilmeier U, Burghardt AJ, Tse JJ, Kapoor P, Stok KS, Manske S, Voll RE, Schett G, Finzel S. Analysis of Hand Joint Space Morphology in Women and Men with Hereditary Hemochromatosis. Calcif Tissue Int 2023; 112:440-451. [PMID: 36738308 PMCID: PMC10025180 DOI: 10.1007/s00223-022-01050-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Accepted: 11/25/2022] [Indexed: 02/05/2023]
Abstract
Hereditary hemochromatosis (HH) causes unbalanced iron deposition in many organs including the joints leading to severe cartilage loss and bone damage in the metacarpophalangeal joints (MCPJ). High-resolution peripheral quantitative computed tomography (HR-pQCT) and its joint space width (JSW) quantification algorithm quantifies in vivo 3D joint morphology. We therefore aimed to (i) determine feasibility and performance of the JSW algorithm in HH, (ii) quantify joint space morphology, and (iii) investigate the relationship between morphological and clinical parameters in HH. Here, we performed an exploratory study on 24 HH patients and sex- and age-matched controls using HR-pQCT imaging of MCPJ. Mineralized bone structure was automatically segmented from the grayscale image data and periosteal surface bone masks and joint space masks were generated. Mean, minimal, and maximal joint space width (JSW; JSW.MIN; JSW.MAX), JSW heterogeneity (JSW.SD), JSW asymmetry (JSW.AS), and joint space volume (JSV) were computed. Demographics and, for HH patients, disease-specific parameters were recorded. Segmentation of JS was very good with 79.7% of MCPJs successfully segmented at first attempt and 20.3% requiring semi-manual correction. HH men showed larger JSV at all MCPs (+ 25.4% < JSV < + 41.8%, p < 0.05), larger JSW.MAX at MCP 3-4 (+ 14%, 0.006 < p < 0.062), and wider JSW (+ 13%, p = 0.043) at MCP 4 relative to HH women. Compared to controls, both HH men and HH women showed larger JSW.AS and smaller JSW.MIN at all MCP levels, reaching significance for HH men at MCP 2 and 3 (JSW.AS: + 323% < JSW.AS < + 359%, 0.020 < p < 0.043; JSW.MIN: - 216% < JSW.MIN < - 225%, p < 0.043), and for women at MCP 3 (JSW.AS: + 180%, p = 0.025; JSW.MIN: - 41.8%, p = 0.022). Time since HH diagnosis was correlated positively with MCP 4 JSW.AS and JSW.SD (0.463 < ρ < 0.499, p < 0.040), and the number of phlebotomies since diagnosis was correlated with JSW.SD at all MCPs (0.432 < ρ < 0.535, p < 0.050). HR-pQCT-based JSW quantification in MCPJ of HH patients is feasible, performs well even in narrow JS, and allows to define the microstructural joint burden of HH.
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Affiliation(s)
- Ursula Heilmeier
- Department of Rheumatology and Clinical Immunology, Faculty of Medicine, University of Freiburg - Medical Center, Hugstetterstraße 55, 79106, Freiburg, Germany.
- Musculoskeletal Quantitative Imaging Research Group, University of California San Francisco, 185 Berry Street, San Francisco, CA, 94158, USA.
| | - Andrew J Burghardt
- Department of Radiology and Biomedical Imaging, University of California San Francisco, 185 Berry Street, San Francisco, CA, 94158, USA
| | - Justin J Tse
- Department of Radiology, Cumming School of Medicine, McCaig Institute for Bone and Joint Health, University of Calgary, 3280 Hospital Drive NW, Calgary, AB, T2N 4Z6, Canada
| | - Puneet Kapoor
- Musculoskeletal Quantitative Imaging Research Group, University of California San Francisco, 185 Berry Street, San Francisco, CA, 94158, USA
| | - Kathryn S Stok
- Department of Biomedical Engineering, The University of Melbourne, Parkville, VIC, Australia
| | - Sarah Manske
- Department of Radiology, Cumming School of Medicine, McCaig Institute for Bone and Joint Health, University of Calgary, 3280 Hospital Drive NW, Calgary, AB, T2N 4Z6, Canada
| | - Reinhard E Voll
- Department of Rheumatology and Clinical Immunology, Faculty of Medicine, University of Freiburg - Medical Center, Hugstetterstraße 55, 79106, Freiburg, Germany
| | - Georg Schett
- Department of Internal Medicine 3, Rheumatology and Immunology, Friedrich-Alexander-University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Stephanie Finzel
- Department of Rheumatology and Clinical Immunology, Faculty of Medicine, University of Freiburg - Medical Center, Hugstetterstraße 55, 79106, Freiburg, Germany
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10
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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] [What about the content of this article? (0)] [Affiliation(s)] [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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11
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Durongbhan P, Silva MO, Li Z, Ansari N, Kour RYN, Davey CE, Stok KS. A microCT imaging protocol for reproducible and efficient quantitative morphometric analysis (QMA) of joint structures of the in situ mouse tibio-femoral joint. Bone 2023; 166:116606. [PMID: 36368467 DOI: 10.1016/j.bone.2022.116606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Revised: 10/19/2022] [Accepted: 11/03/2022] [Indexed: 11/09/2022]
Abstract
Micro-computed tomography (microCT) offers a three-dimensional (3D), high-resolution technique for the visualisation and analysis of bone microstructure. Using contrast-enhanced microCT, this capability has been expanded in recent studies to include cartilage morphometry and whole joint measures, known together as quantitative morphometric analysis (QMA). However, one of the main challenges in quantitative analysis of joint images is sensitivity to joint pose and alignment, which may influence measures related to both joint space and joint biomechanics. Thus, this study proposes a novel microCT imaging protocol for reproducible and efficient QMA of in situ mouse tibio-femoral joint. This work consists of two parts: an in situ diffusion kinetics study for a known cationic iodinated contrast agent (CA4+) for QMA of the cartilage, and a joint positioning and image processing workflow for whole joint QMA. In the diffusion kinetics study, 8 mice were injected at both of their tibio-femoral joints with distinct CA4+ concentrations and diffusion times. The mice were scanned at different time points after injection, and evaluated using attenuation and cartilage QMA measures. Results show that cartilage segmentation and QMA could be performed for CA4+ solution at a concentration of 48 mg/ml, and that reliable measurement and quantification of cartilage were achieved after 5 min of diffusion following contrast agent injection. We established the joint positioning and image processing workflow by developing a novel positioning device to control joint pose during scanning, and a spherical harmonics-based image processing workflow to ensure consistent alignment during image processing. Both legs of seven mice were scanned 10 times, 5 prior to receiving CA4+ and 5 after, and evaluated using whole joint QMA parameters. Joint QMA evaluation of the workflow showed excellent reproducibility; intraclass correlation coefficients ranged from 0.794 to 0.930, confirming that the imaging protocol enables reproducible and efficient QMA of joint structures in preclinical models, and that contrast agent injection did not cause significant alteration to the measured parameters.
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Affiliation(s)
- Pholpat Durongbhan
- Department of Biomedical Engineering, The University of Melbourne, Parkville, Australia.
| | - Mateus O Silva
- Department of Biomedical Engineering, The University of Melbourne, Parkville, Australia.
| | - Zihui Li
- Department of Biomedical Engineering, The University of Melbourne, Parkville, Australia
| | - Niloufar Ansari
- Department of Biomedical Engineering, The University of Melbourne, Parkville, Australia
| | - R Y Nigel Kour
- Department of Biomedical Engineering, The University of Melbourne, Parkville, Australia; Department of Mechanical Engineering, The University of Melbourne, Parkville, Australia.
| | - Catherine E Davey
- Department of Biomedical Engineering, The University of Melbourne, Parkville, Australia.
| | - Kathryn S Stok
- Department of Biomedical Engineering, The University of Melbourne, Parkville, Australia.
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12
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Zhao M, Tse JJ, Kuczynski MT, Brunet SC, Yan R, Engelke K, Peters M, van den Bergh JP, van Rietbergen B, Stok KS, Barnabe C, Pauchard Y, Manske SL. Open-source image analysis tool for the identification and quantification of cortical interruptions and bone erosions in high-resolution peripheral quantitative computed tomography images of patients with rheumatoid arthritis. Bone 2022; 165:116571. [PMID: 36174928 DOI: 10.1016/j.bone.2022.116571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 09/19/2022] [Accepted: 09/22/2022] [Indexed: 11/28/2022]
Abstract
Identification of bone erosions and quantification of erosion volume is important for rheumatoid arthritis diagnosis, and can add important information to evaluate disease progression and treatment effects. High-resolution peripheral quantitative computed tomography (HR-pQCT) is well suited for this purpose, however analysis methods are not widely available. The purpose of this study was to develop an open-source software tool for the identification and quantification of bone erosions using images acquired by HR-pQCT. The collection of modules, Bone Analysis Modules (BAM) - Erosion, implements previously published erosion analysis techniques as modules in 3D Slicer, an open-source image processing and visualization tool. BAM includes a module to automatically identify cortical interruptions, from which erosions are manually selected, and a hybrid module that combines morphological and level set operations to quantify the volume of bone erosions. HR-pQCT images of the second and third metacarpophalangeal (MCP) joints were acquired in patients with RA (XtremeCT, n = 14, XtremeCTII, n = 22). The number of cortical interruptions detected by BAM-Erosion agreed strongly with the previously published cortical interruption detection algorithm for both XtremeCT (r2 = 0.85) and XtremeCTII (r2 = 0.87). Erosion volume assessment by BAM-Erosion agreed strongly (r2 = 0.95) with the Medical Image Analysis Framework. BAM-Erosion provides an open-source erosion analysis tool that produces comparable results to previously published algorithms, with improved options for visualization. The strength of the tool is that it implements multiple image processing algorithms for erosion analysis on a single, widely available, open-source platform that can accommodate future updates.
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Affiliation(s)
- Mingjie Zhao
- Department of Radiology, Cumming School of Medicine, University of Calgary, Calgary, Canada; McCaig Institute for Bone and Joint Health, Cumming School of Medicine, University of Calgary, Calgary, Canada
| | - Justin J Tse
- Department of Radiology, Cumming School of Medicine, University of Calgary, Calgary, Canada; McCaig Institute for Bone and Joint Health, Cumming School of Medicine, University of Calgary, Calgary, Canada
| | - Michael T Kuczynski
- Department of Radiology, Cumming School of Medicine, University of Calgary, Calgary, Canada; McCaig Institute for Bone and Joint Health, Cumming School of Medicine, University of Calgary, Calgary, Canada; Biomedical Engineering Graduate Program, Department of Radiology, Cumming School of Medicine, University of Calgary, Calgary, Canada
| | - Scott C Brunet
- Department of Radiology, Cumming School of Medicine, University of Calgary, Calgary, Canada; McCaig Institute for Bone and Joint Health, Cumming School of Medicine, University of Calgary, Calgary, Canada
| | - Ryan Yan
- Department of Radiology, Cumming School of Medicine, University of Calgary, Calgary, Canada; McCaig Institute for Bone and Joint Health, Cumming School of Medicine, University of Calgary, Calgary, Canada
| | - Klaus Engelke
- Department of Medicine 3, FAU University Erlangen-Nürnberg and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Michiel Peters
- Department of Radiology and Nuclear Medicine, Maastricht University Medical Center, Maastricht, the Netherlands
| | - Joop P van den Bergh
- Department of Internal Medicine, Maastricht University Medical Center, Maastricht, the Netherlands; Department of Internal Medicine, VieCuri Medical Center, Venlo, the Netherlands
| | - Bert van Rietbergen
- Department of Biomedical Engineering, Eindhoven University of Technology, Eindhoven, the Netherlands
| | - Kathryn S Stok
- Department of Biomedical Engineering, The University of Melbourne, Parkville, Australia
| | - Cheryl Barnabe
- McCaig Institute for Bone and Joint Health, Cumming School of Medicine, University of Calgary, Calgary, Canada; Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, Canada
| | - Yves Pauchard
- Department of Electrical and Software Engineering, University of Calgary, Calgary, Canada
| | - Sarah L Manske
- Department of Radiology, Cumming School of Medicine, University of Calgary, Calgary, Canada; McCaig Institute for Bone and Joint Health, Cumming School of Medicine, University of Calgary, Calgary, Canada; Biomedical Engineering Graduate Program, Department of Radiology, Cumming School of Medicine, University of Calgary, Calgary, Canada.
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13
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Boos MA, Lamandé SR, Stok KS. Multiscale Strain Transfer in Cartilage. Front Cell Dev Biol 2022; 10:795522. [PMID: 35186920 PMCID: PMC8855033 DOI: 10.3389/fcell.2022.795522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Accepted: 01/19/2022] [Indexed: 11/30/2022] Open
Abstract
The transfer of stress and strain signals between the extracellular matrix (ECM) and cells is crucial for biochemical and biomechanical cues that are required for tissue morphogenesis, differentiation, growth, and homeostasis. In cartilage tissue, the heterogeneity in spatial variation of ECM molecules leads to a depth-dependent non-uniform strain transfer and alters the magnitude of forces sensed by cells in articular and fibrocartilage, influencing chondrocyte metabolism and biochemical response. It is not fully established how these nonuniform forces ultimately influence cartilage health, maintenance, and integrity. To comprehend tissue remodelling in health and disease, it is fundamental to investigate how these forces, the ECM, and cells interrelate. However, not much is known about the relationship between applied mechanical stimulus and resulting spatial variations in magnitude and sense of mechanical stimuli within the chondrocyte’s microenvironment. Investigating multiscale strain transfer and hierarchical structure-function relationships in cartilage is key to unravelling how cells receive signals and how they are transformed into biosynthetic responses. Therefore, this article first reviews different cartilage types and chondrocyte mechanosensing. Following this, multiscale strain transfer through cartilage tissue and the involvement of individual ECM components are discussed. Finally, insights to further understand multiscale strain transfer in cartilage are outlined.
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Affiliation(s)
- Manuela A. Boos
- Department of Biomedical Engineering, The University of Melbourne, Parkville, VIC, Australia
| | - Shireen R. Lamandé
- Musculoskeletal Research, Murdoch Children’s Research Institute, Parkville, VIC, Australia
- Department of Paediatrics, The University of Melbourne, Parkville, VIC, Australia
| | - Kathryn S. Stok
- Department of Biomedical Engineering, The University of Melbourne, Parkville, VIC, Australia
- *Correspondence: Kathryn S. Stok,
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14
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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] [What about the content of this article? (0)] [Affiliation(s)] [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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15
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Rathnayake MSB, Farrugia BL, Kulakova K, ter Voert CEM, van Osch GJVM, Stok KS. Macromolecular Interactions in Cartilage Extracellular Matrix Vary According to the Cartilage Type and Location. Cartilage 2021; 13:476S-485S. [PMID: 33749320 PMCID: PMC8804747 DOI: 10.1177/19476035211000811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE To investigate GAG-ECM (glycosaminoglycan-extracellular matrix) interactions in different cartilage types. To achieve this, we first aimed to determine protocols for consistent calculation of GAG content between cartilage types. DESIGN Auricular cartilage containing both collagen and elastin was used to determine the effect of lyophilization on GAG depletion activity. Bovine articular, auricular, meniscal, and nasal cartilage plugs were treated using different reagents to selectively remove GAGs. Sulfated glycosaminoglycan (sGAG) remaining in the sample after treatment were measured, and sGAG loss was compared between cartilage types. RESULTS The results indicate that dry weight of cartilage should be measured prior to cartilage treatment in order to provide a more accurate reference for normalization. Articular, meniscal, and nasal cartilage lost significant amounts of sGAG for all reagents used. However, only hyaluronidase was able to remove significant amount of sGAG from auricular cartilage. Furthermore, hyaluronidase was able to remove over 99% of sGAG from all cartilage types except auricular cartilage where it only removed around 76% of sGAG. The results indicate GAG-specific ECM binding for different cartilage types and locations. CONCLUSIONS In conclusion, lyophilization can be performed to determine native dry weight for normalization without affecting the degree of GAG treatment. To our knowledge, this is the first study to compare GAG-ECM interactions of different cartilage types using different GAG extraction methods. Degree of GAG depletion not only varied with cartilage type but also the same type from different anatomic locations. This suggests specific structure-function roles for GAG populations found in the tissues.
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Affiliation(s)
- Manula S. B. Rathnayake
- Department of Biomedical Engineering,
University of Melbourne, Parkville, Victoria, Australia
| | - Brooke L. Farrugia
- Department of Biomedical Engineering,
University of Melbourne, Parkville, Victoria, Australia
| | - Karyna Kulakova
- Department of Biomedical Engineering,
University of Melbourne, Parkville, Victoria, Australia
| | - Colet E. M. ter Voert
- Department of Biomedical Engineering,
University of Melbourne, Parkville, Victoria, Australia
| | - Gerjo J. V. M. van Osch
- Department of Otorhinolaryngology and
Department of Orthopaedics, Erasmus MC, University Medical Centre, Rotterdam, the
Netherlands
- Department of Biomedical Engineering, Faculty
of Mechanical, Maritime, and Materials Engineering, Delft University of Technology, Delft,
the Netherlands
| | - Kathryn S. Stok
- Department of Biomedical Engineering,
University of Melbourne, Parkville, Victoria, Australia
- Kathryn S. Stok, Department of Biomedical
Engineering, University of Melbourne, 203 Bouverie St, Carlton, Victoria 3053, Australia.
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16
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Boos MA, Grinstaff MW, Lamandé SR, Stok KS. Contrast-Enhanced Micro-Computed Tomography for 3D Visualization and Quantification of Glycosaminoglycans in Different Cartilage Types. Cartilage 2021; 13:486S-494S. [PMID: 34696603 PMCID: PMC8804852 DOI: 10.1177/19476035211053820] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
OBJECTIVE To compare CA4+-enhanced micro-computed tomography (microCT) of bovine articular, meniscal, nasal, and auricular cartilage, each of which possesses a different extracellular matrix (ECM) composition and structure. DESIGN The diffusion kinetics of CA4+ in different native cartilage types were assessed over 20 hours. The feasibility of CA4+-enhanced microCT to visualize and quantify glycosaminoglycans (GAGs) in these different tissues was tested using safranin-O staining and 1,9-dimethylmethylene blue assay. RESULTS The diffusion kinetics of CA4+ in auricular cartilage are significantly slower compared with all other cartilage types. Total GAG content per volume correlates to microCT attenuation with an R2 value of 0.79 for all cartilage types. Three-dimensional contrast-enhanced microCT images of spatial GAG distribution reflect safranin-O staining and highlight the differences in ECM structure, with heterogeneous regions with higher GAG concentrations highlighted by the contrast agent. CONCLUSIONS CA4+-enhanced microCT enables assessment of 3-dimensiona distribution and GAG content in different types of cartilage and has promise as an ex vivo diagnostic technique to monitor matrix development in different tissues over time as well as tissue-engineered constructs.
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Affiliation(s)
- Manuela A. Boos
- Department of Biomedical Engineering,
The University of Melbourne, Parkville, VIC, Australia
| | - Mark W. Grinstaff
- Departments of Chemistry and Biomedical
Engineering, Boston University, Boston, MA, USA
| | - Shireen R. Lamandé
- Musculoskeletal Research, Murdoch
Children’s Research Institute, Parkville, VIC, Australia,Department of Paediatrics, The
University of Melbourne, Parkville, VIC, Australia
| | - Kathryn S. Stok
- Department of Biomedical Engineering,
The University of Melbourne, Parkville, VIC, Australia,Kathryn S. Stok, Department of Biomedical
Engineering, The University of Melbourne, Parkville, Melbourne, VIC 3010,
Australia.
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17
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Besler BA, Schadow JE, Durongbhan P, Steiner TH, Choo RJ, Zulliger MA, Wilke M, Atal K, Firminger C, Quintin A, Koller B, Müller R, Nesic D, Stok KS. Quantitative measures of bone shape, cartilage morphometry and joint alignment are associated with disease in an ACLT and MMx rat model of osteoarthritis. Bone 2021; 146:115903. [PMID: 33652170 DOI: 10.1016/j.bone.2021.115903] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Revised: 02/11/2021] [Accepted: 02/22/2021] [Indexed: 12/16/2022]
Abstract
Multi-scale, subject-specific quantitative methods to characterize and monitor osteoarthritis in animal models and therapeutic treatments could help reveal causal relationships in disease development and distinguish treatment strategies. In this work, we demonstrate a reproducible and sensitive quantitative image analysis to characterize bone, cartilage and joint measures describing a rat model of post-traumatic osteoarthritis. Eleven 3-month-old male Wistar rats underwent medial anterior cruciate ligament (ACL) transection and medial meniscectomy on the right knee to destabilise the right tibiofemoral joint. They were sacrificed 6 weeks post-surgery and a silicon-based micro-bead contrast agent was injected in the joint space, before scanning with micro-computed tomography (microCT). Subsequently, 3D quantitative morphometric analysis (QMA), previously developed for rabbit joints, was performed. This included cartilage, subchondral cortical and epiphyseal bone measures, as well as novel tibiofemoral joint metrics. Semi-quantitative evaluation was performed on matching two-dimensional (2D) histology and microCT images. Reproducibility of the QMA was tested on eleven age-matched additional joints. The results indicate the QMA method is accurate and reproducible and that microCT-derived cartilage measurements are valid for the analysis of rat joints. The pathologic changes caused by transection of the ACL and medial meniscectomy were reflected in measurements of bone shape, cartilage morphology, and joint alignment. Furthermore, we were able to identify model-specific predictive parameters based on morphometric parameters measured with the QMA.
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Affiliation(s)
- Bryce A Besler
- Institute for Biomechanics, ETH Zurich, Zurich, Switzerland; University of Calgary, Calgary, Canada.
| | - Jemima E Schadow
- Institute for Biomechanics, ETH Zurich, Zurich, Switzerland; Department of Biomedical Engineering, The University of Melbourne, Parkville, Australia.
| | - Pholpat Durongbhan
- Department of Biomedical Engineering, The University of Melbourne, Parkville, Australia.
| | | | - Ryan J Choo
- Institute for Biomechanics, ETH Zurich, Zurich, Switzerland.
| | | | | | - Kailash Atal
- Institute for Biomechanics, ETH Zurich, Zurich, Switzerland
| | - Colin Firminger
- Institute for Biomechanics, ETH Zurich, Zurich, Switzerland.
| | - Aurelie Quintin
- Department of BioMedical Research, University of Bern, Bern, Switzerland.
| | | | - Ralph Müller
- Institute for Biomechanics, ETH Zurich, Zurich, Switzerland.
| | - Dobrila Nesic
- Department of BioMedical Research, University of Bern, Bern, Switzerland; Faculty of Medicine, University of Geneva, Geneva, Switzerland.
| | - Kathryn S Stok
- Institute for Biomechanics, ETH Zurich, Zurich, Switzerland; SCANCO Medical AG, Brüttisellen, Switzerland; Department of Biomedical Engineering, The University of Melbourne, Parkville, Australia.
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18
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Finzel S, Manske SL, Barnabe CCM, Burghardt AJ, Marotte H, Scharmga A, Hauge EM, Chapurlat R, Engelke K, Li X, van Teeffelen BCJ, Conaghan PG, Stok KS. Reliability and Change in Erosion Measurements by High-resolution Peripheral Quantitative Computed Tomography in a Longitudinal Dataset of Rheumatoid Arthritis Patients. J Rheumatol 2020; 48:348-351. [PMID: 32934121 DOI: 10.3899/jrheum.191391] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/05/2020] [Indexed: 01/16/2023]
Abstract
OBJECTIVE The aim of this multireader exercise was to assess the reliability and change over time of erosion measurements in patients with rheumatoid arthritis (RA) using high-resolution peripheral quantitative computed tomography (HR-pQCT). METHODS HR-pQCT scans of 23 patients with RA were assessed at baseline and 12 months. Four experienced readers examined the dorsal, palmar, radial, and ulnar surfaces of the metacarpal head (MH) and phalangeal base (PB) of the second and third digits, blinded to time order. In total, 368 surfaces (23 patients´ 16 surfaces) were evaluated per timepoint to characterize cortical breaks as pathological (erosion) or physiological, and to quantify erosion width and depth. Reliability was evaluated by intraclass correlation coefficients (ICC), percentage agreement, and Light k; change over time was defined by means ± SD of erosion numbers and dimensions. RESULTS ICC for the mean measurements of width and depth of the pathological breaks ranged between 0.819-0.883, and 0.771-0.907, respectively. Most physiological cortical breaks were found at the palmar PB, whereas most pathological cortical breaks were located at the radial MH. There was a significant increase in both the numbers and the dimensions of erosions between baseline and follow-up (P = 0.0001 for erosion numbers, width, and depth in axial plane; P = 0.001 for depth in perpendicular plane). CONCLUSION This exercise confirmed good reliability of HR-pQCT erosion measurements and their ability to detect change over time.
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Affiliation(s)
- Stephanie Finzel
- S. Finzel, MD, Senior Attending Physician, Department of Rheumatology and Clinical Immunology, Medical Center - University of Freiburg, Medical Faculty, University of Freiburg, Freiburg, Germany;
| | - Sarah L Manske
- S.L. Manske, PhD, Assistant Professor, Department of Radiology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Cheryl C M Barnabe
- C.C. Barnabe, MD, MSc, Associate Professor, Departments of Medicine and Community Health Sciences, University of Calgary, and McCaig Institute for Bone and Joint Health, University of Calgary, Calgary, Alberta, Canada
| | - Andrew J Burghardt
- A.J. Burghardt, BS, Research Specialist, Department of Radiology and Biomedical Imaging, University of California San Francisco, California, USA
| | - Hubert Marotte
- H. Marotte, MD, PhD, Professor, INSERM 1059, Université de Lyon, and Service de Rhumatologie, CHU de Saint-Etienne, Saint-Etienne, France
| | - Andrea Scharmga
- A. Scharmga, PhD, Maastricht University, Maastricht, the Netherlands
| | - Ellen-Margrethe Hauge
- E.M. Hauge, MD, PhD, Professor, Department of Rheumatology, Aarhus University Hospital and Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - Roland Chapurlat
- R. Chapurlat, MD, PhD, Professor, INSERM 1033, Hôpital Edouard Herriot, Lyon, France
| | - Klaus Engelke
- K. Engelke, PhD, Professor, Department of Medicine 3, FAU University Erlangen-Nürnberg and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Xiaojuan Li
- X. Li, PhD, Professor, Department of Biomedical Engineering, Cleveland Clinic, Cleveland, Ohio, USA
| | - Bente C J van Teeffelen
- B.C. van Teeffelen, Department of Biomedical Engineering, Melbourne School of Engineering, The University of Melbourne, Melbourne, Australia
| | - Philip G Conaghan
- P.G. Conaghan, MD, PhD, Professor, Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds and NIHR Leeds Biomedical Research Centre, Leeds, UK
| | - Kathryn S Stok
- K.S. Stok, PhD, Senior Lecturer, Institute for Biomechanics, ETH Zurich, Zurich, Switzerland, and Department of Biomedical Engineering, University of Melbourne, Melbourne, Australia
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19
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Oliveira Silva M, Gregory JL, Ansari N, Stok KS. Molecular Signaling Interactions and Transport at the Osteochondral Interface: A Review. Front Cell Dev Biol 2020; 8:750. [PMID: 32974333 PMCID: PMC7466715 DOI: 10.3389/fcell.2020.00750] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Accepted: 07/17/2020] [Indexed: 12/11/2022] Open
Abstract
Articular joints are comprised of different tissues, including cartilage and bone, with distinctive structural and mechanical properties. Joint homeostasis depends on mechanical and biological integrity of these components and signaling exchanges between them. Chondrocytes and osteocytes actively sense, integrate, and convert mechanical forces into biochemical signals in cartilage and bone, respectively. The osteochondral interface between the bone and cartilage allows these tissues to communicate with each other and exchange signaling and nutritional molecules, and by that ensure an integrated response to mechanical stimuli. It is currently not well known how molecules are transported between these tissues. Measuring molecular transport in vivo is highly desirable for tracking cartilage degeneration and osteoarthritis progression. Since transport of contrast agents, which are used for joint imaging, also depend on diffusion through the cartilage extracellular matrix, contrast agent enhanced imaging may provide a high resolution, non-invasive method for investigating molecular transport in the osteochondral unit. Only a few techniques have been developed to track molecular transport at the osteochondral interface, and there appear opportunities for development in this field. This review will describe current knowledge of the molecular interactions and transport in the osteochondral interface and discuss the potential of using contrast agents for investigating molecular transport and structural changes of the joint.
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Affiliation(s)
| | | | | | - Kathryn S. Stok
- Department of Biomedical Engineering, University of Melbourne, Parkville, VIC, Australia
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20
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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] [What about the content of this article? (0)] [Affiliation(s)] [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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21
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Klose-Jensen R, Tse JJ, Keller KK, Barnabe C, Burghardt AJ, Finzel S, Tam LS, Hauge EM, Stok KS, Manske SL. High-Resolution Peripheral Quantitative Computed Tomography for Bone Evaluation in Inflammatory Rheumatic Disease. Front Med (Lausanne) 2020; 7:337. [PMID: 32766262 PMCID: PMC7381125 DOI: 10.3389/fmed.2020.00337] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Accepted: 06/05/2020] [Indexed: 12/25/2022] Open
Abstract
High resolution peripheral quantitative computed tomography (HR-pQCT) is a 3-dimensional imaging modality with superior sensitivity for bone changes and abnormalities. Recent advances have led to increased use of HR-pQCT in inflammatory arthritis to report quantitative volumetric measures of bone density, microstructure, local anabolic (e.g., osteophytes, enthesiophytes) and catabolic (e.g., erosions) bone changes and joint space width. These features may be useful for monitoring disease progression, response to therapy, and are responsive to differentiating between those with inflammatory arthritis conditions and healthy controls. We reviewed 69 publications utilizing HR-pQCT imaging of the metacarpophalangeal (MCP) and/or wrist joints to investigate arthritis conditions. Erosions are a marker of early inflammatory arthritis progression, and recent work has focused on improvement and application of techniques to sensitively identify erosions, as well as quantifying erosion volume changes longitudinally using manual, semi-automated and automated methods. As a research tool, HR-pQCT may be used to detect treatment effects through changes in erosion volume in as little as 3 months. Studies with 1-year follow-up have demonstrated progression or repair of erosions depending on the treatment strategy applied. HR-pQCT presents several advantages. Combined with advances in image processing and image registration, individual changes can be monitored with high sensitivity and reliability. Thus, a major strength of HR-pQCT is its applicability in instances where subtle changes are anticipated, such as early erosive progression in the presence of subclinical inflammation. HR-pQCT imaging results could ultimately impact decision making to uptake aggressive treatment strategies and prevent progression of joint damage. There are several potential areas where HR-pQCT evaluation of inflammatory arthritis still requires development. As a highly sensitive imaging technique, one of the major challenges has been motion artifacts; motion compensation algorithms should be implemented for HR-pQCT. New research developments will improve the current disadvantages including, wider availability of scanners, the field of view, as well as the versatility for measuring tissues other than only bone. The challenge remains to disseminate these analysis approaches for broader clinical use and in research.
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Affiliation(s)
- Rasmus Klose-Jensen
- Department of Rheumatology, Aarhus University Hospital, Aarhus, Denmark.,Department of Clinical Medicine, Faculty of Health, Aarhus University, Aarhus, Denmark
| | - Justin J Tse
- Cumming School of Medicine, McCaig Institute for Bone and Joint Health, University of Calgary, Calgary, AB, Canada.,Department of Radiology, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | | | - Cheryl Barnabe
- Cumming School of Medicine, McCaig Institute for Bone and Joint Health, University of Calgary, Calgary, AB, Canada.,Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Andrew J Burghardt
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, San Francisco, CA, United States
| | - Stephanie Finzel
- Department of Rheumatology and Clinical Immunology, Medical Centre - University of Freiburg, Freiburg, Germany.,Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Lai-Shan Tam
- Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Hong Kong, China
| | - Ellen-Margrethe Hauge
- Department of Rheumatology, Aarhus University Hospital, Aarhus, Denmark.,Department of Clinical Medicine, Faculty of Health, Aarhus University, Aarhus, Denmark
| | - Kathryn S Stok
- Department of Biomedical Engineering, The University of Melbourne, Parkville, VIC, Australia
| | - Sarah L Manske
- Cumming School of Medicine, McCaig Institute for Bone and Joint Health, University of Calgary, Calgary, AB, Canada.,Department of Radiology, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
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22
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Stok KS, Burghardt AJ, Boutroy S, Peters MPH, Manske SL, Stadelmann V, Vilayphiou N, van den Bergh JP, Geusens P, Li X, Marotte H, van Rietbergen B, Boyd SK, Barnabe C. Consensus approach for 3D joint space width of metacarpophalangeal joints of rheumatoid arthritis patients using high-resolution peripheral quantitative computed tomography. Quant Imaging Med Surg 2020; 10:314-325. [PMID: 32190559 DOI: 10.21037/qims.2019.12.11] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Background Joint space assessment for rheumatoid arthritis (RA) by ordinal conventional radiographic scales is susceptible to floor and ceiling effects. High-resolution peripheral quantitative computed tomography (HR-pQCT) provides superior resolution, and may detect earlier changes. The goal of this work was to compare existing 3D methods to calculate joint space width (JSW) metrics in human metacarpophalangeal (MCP) joints with HR-pQCT and reach consensus for future studies. Using the consensus method, we established reproducibility with repositioning as well as feasibility for use in second-generation HR-pQCT scanners. Methods Three published JSW methods were compared using datasets from individuals with RA from three research centers. A SPECTRA consensus method was developed to take advantage of strengths of the individual methods. Using the SPECTRA method, reproducibility after repositioning was tested and agreement between scanner generations was also established. Results When comparing existing JSW methods, excellent agreement was shown for JSW minimum and mean (ICC 0.987-0.996) but not maximum and volume (ICC 0.000-0.897). Differences were identified as variations in volume definitions and algorithmic differences that generated high sensitivity to boundary conditions. The SPECTRA consensus method reduced this sensitivity, demonstrating good scan-rescan reliability (ICC >0.911) except for minimum JSW (ICC 0.656). There was strong agreement between results from first- and second-generation HR-pQCT (ICC >0.833). Conclusions The SPECTRA consensus method combines unique strengths of three independently-developed algorithms and leverages underlying software updates to provide a mature analysis to measure 3D JSW. This method is robust with respect to repositioning and scanner generations, suggesting its suitability for detecting change.
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Affiliation(s)
- Kathryn S Stok
- Department of Biomedical Engineering, The University of Melbourne, Parkville, Australia.,SCANCO Medical AG, Brüttisellen, Switzerland
| | - Andrew J Burghardt
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, USA
| | | | - Michiel P H Peters
- Department of Internal Medicine, Division of Rheumatology, Maastricht University Medical Centre, Maastricht, The Netherlands.,Research School CAPHRI, School for Public Health and Primary Care, Maastricht, The Netherlands.,NUTRIM School of Nutrition & Translational Research in Metabolism, Maastricht University, Maastricht, The Netherlands
| | - Sarah L Manske
- McCaig Institute for Bone and Joint Health, University of Calgary, Calgary, Canada.,Department of Radiology, Cumming School of Medicine, University of Calgary, Calgary, Canada
| | - Vincent Stadelmann
- SCANCO Medical AG, Brüttisellen, Switzerland.,Department of Research and Development, Schulthess Klinik, Zürich, Switzerland
| | | | - Joop P van den Bergh
- Department of Internal Medicine, Division of Rheumatology, Maastricht University Medical Centre, Maastricht, The Netherlands.,NUTRIM School of Nutrition & Translational Research in Metabolism, Maastricht University, Maastricht, The Netherlands.,Faculty of Medicine and Life Sciences, Hasselt University, Hasselt, Belgium.,VieCuri Medical Centre, Venlo, The Netherlands
| | - Piet Geusens
- Department of Internal Medicine, Division of Rheumatology, Maastricht University Medical Centre, Maastricht, The Netherlands.,Research School CAPHRI, School for Public Health and Primary Care, Maastricht, The Netherlands.,Department of Research and Development, Schulthess Klinik, Zürich, Switzerland
| | - Xiaojuan Li
- Program of Advanced Musculoskeletal Imaging (PAMI), Cleveland Clinic, Cleveland, OH, USA
| | - Hubert Marotte
- SAINBIOSE, INSERM U1059, University of Lyon, Saint-Etienne, France.,Department of Rheumatology, University Hospital of Saint-Etienne, Saint-Etienne, France.,INSERM CIE3 1408, University Hospital of Saint-Etienne, Saint-Etienne, France
| | - Bert van Rietbergen
- Orthopaedic Biomechanics, Department of Biomedical Engineering, Eindhoven University of Technology, Eindhoven, The Netherlands.,Department of Orthopaedic Surgery, Research School CAPHRI, Maastricht University Medical Center, Maastricht, The Netherlands
| | - Steven K Boyd
- McCaig Institute for Bone and Joint Health, University of Calgary, Calgary, Canada.,Department of Radiology, Cumming School of Medicine, University of Calgary, Calgary, Canada
| | - Cheryl Barnabe
- McCaig Institute for Bone and Joint Health, University of Calgary, Calgary, Canada.,Department of Medicine and Department of Community Health Sciences, Cumming School of Medicine, University of Calgary, Calgary, Canada
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23
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Lehmann J, Nürnberger S, Narcisi R, Stok KS, van der Eerden BCJ, Koevoet WJLM, Kops N, Ten Berge D, van Osch GJ. Recellularization of auricular cartilage via elastase-generated channels. Biofabrication 2019; 11:035012. [PMID: 30921774 DOI: 10.1088/1758-5090/ab1436] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Decellularized tissue matrices are promising substrates for tissue generation by stem cells to replace poorly regenerating tissues such as cartilage. However, the dense matrix of decellularized cartilage impedes colonisation by stem cells. Here, we show that digestion of elastin fibre bundles traversing auricular cartilage creates channels through which cells can migrate into the matrix. Human chondrocytes and bone marrow-derived mesenchymal stromal cells efficiently colonise elastin-treated scaffolds through these channels, restoring a glycosaminoglycan-rich matrix and improving mechanical properties while maintaining size and shape of the restored tissue. The scaffolds are also rapidly colonised by endogenous cartilage-forming cells in a subcutaneously implanted osteochondral biopsy model. Creating channels for cells in tissue matrices may be a broadly applicable strategy for recellularization and restoration of tissue function.
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Affiliation(s)
- J Lehmann
- Department of Otorhinolaryngology and Head and Neck Surgery Erasmus MC, Rotterdam, The Netherlands. Department of Cell Biology Erasmus MC, Rotterdam, The Netherlands
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24
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Mattei C, Lim R, Drury H, Nasr B, Li Z, Tadros MA, D'Abaco GM, Stok KS, Nayagam BA, Dottori M. Generation of Vestibular Tissue-Like Organoids From Human Pluripotent Stem Cells Using the Rotary Cell Culture System. Front Cell Dev Biol 2019; 7:25. [PMID: 30891447 PMCID: PMC6413170 DOI: 10.3389/fcell.2019.00025] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Accepted: 02/12/2019] [Indexed: 01/17/2023] Open
Abstract
Hair cells are specialized mechanosensitive cells responsible for mediating balance and hearing within the inner ear. In mammals, hair cells are limited in number and do not regenerate. Human pluripotent stem cells (hPSCs) provide a valuable source for deriving human hair cells to study their development and design therapies to treat and/or prevent their degeneration. In this study we used a dynamic 3D Rotary Cell Culture System (RCCS) for deriving inner ear organoids from hPSCs. We show RCCS-derived organoids recapitulate stages of inner ear development and give rise to an enriched population of hair cells displaying vestibular-like morphological and physiological phenotypes, which resemble developing human fetal inner ear hair cells as well as the presence of accessory otoconia-like structures. These results show that hPSC-derived organoids can generate complex inner ear structural features and be a resource to study inner ear development.
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Affiliation(s)
- Cristiana Mattei
- Centre for Neural Engineering, Melbourne School of Engineering, The University of Melbourne, Melbourne, VIC, Australia.,Department of Biomedical Engineering, Melbourne School of Engineering, The University of Melbourne, Melbourne, VIC, Australia
| | - Rebecca Lim
- School of Biomedical Sciences and Pharmacy, Faculty of Health and Medicine, University of Newcastle, Newcastle, NSW, Australia
| | - Hannah Drury
- School of Biomedical Sciences and Pharmacy, Faculty of Health and Medicine, University of Newcastle, Newcastle, NSW, Australia
| | - Babak Nasr
- Centre for Neural Engineering, Melbourne School of Engineering, The University of Melbourne, Melbourne, VIC, Australia.,Department of Electrical and Electronic Engineering, Melbourne School of Engineering, The University of Melbourne, Melbourne, VIC, Australia.,ARC Centre of Excellence for Integrative Brain Function, The University of Melbourne, Melbourne, VIC, Australia
| | - Zihui Li
- Department of Biomedical Engineering, Melbourne School of Engineering, The University of Melbourne, Melbourne, VIC, Australia
| | - Melissa A Tadros
- School of Biomedical Sciences and Pharmacy, Faculty of Health and Medicine, University of Newcastle, Newcastle, NSW, Australia
| | - Giovanna M D'Abaco
- Department of Biomedical Engineering, Melbourne School of Engineering, The University of Melbourne, Melbourne, VIC, Australia
| | - Kathryn S Stok
- Department of Biomedical Engineering, Melbourne School of Engineering, The University of Melbourne, Melbourne, VIC, Australia
| | - Bryony A Nayagam
- Departments of Audiology and Speech Pathology and Department of Medical Bionics, The University of Melbourne, Melbourne, VIC, Australia
| | - Mirella Dottori
- Centre for Neural Engineering, Melbourne School of Engineering, The University of Melbourne, Melbourne, VIC, Australia.,Department of Biomedical Engineering, Melbourne School of Engineering, The University of Melbourne, Melbourne, VIC, Australia.,Illawarra Health and Medical Research Institute, University of Wollongong, Wollongong, NSW, Australia
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25
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Flurey CA, Tugwell PS, Black RJ, Halls S, Page MJ, Robson JC, Sahbudin I, Siddle HJ, Sinnathurai P, Stok KS, Richards B. The OMERACT Emerging Leaders Program: The Good, the Bad, and the Future. J Rheumatol 2019; 46:1047-1052. [PMID: 30824659 DOI: 10.3899/jrheum.181126] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/08/2019] [Indexed: 12/22/2022]
Abstract
OBJECTIVE To describe the experience of the first OMERACT Emerging Leaders Program (ELP). METHODS A Delphi process identified positive aspects, areas for improvement, and future directions. Core items were defined as essential if they received ≥ 70% ratings. RESULTS Participants valued relatable/accessible mentors (100%), including an OMERACT Executive mentor (100%), and a support network of peers (90%). Key items for future development were funding support (100%) and developing knowledge about OMERACT processes (90%) and politics (80%). CONCLUSION The ELP has the potential to provide targeted training for early career researchers to develop relevant skills for future leadership roles within OMERACT.
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Affiliation(s)
- Caroline A Flurey
- From the Faculty of Health and Applied Sciences, University of the West of England, Bristol; Rheumatology Research Group, Institute of Inflammation and Ageing, University of Birmingham, Birmingham; Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, UK; Division of Rheumatology, Department of Medicine, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa; Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada; Rheumatology Unit, Royal Adelaide Hospital, Adelaide; School of Public Health and Preventive Medicine, Monash University, Melbourne; Rheumatology Department, Royal North Shore Hospital; Sydney Medical School, University of Sydney, Sydney; Department of Biomedical Engineering, The University of Melbourne, Victoria, Australia. .,C.A. Flurey, MSc, PhD, CPsychol, FHEA, Faculty of Health and Applied Sciences, University of the West of England; P.S. Tugwell, MD, MSc, FRCPC, Division of Rheumatology, Department of Medicine, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa, and Clinical Epidemiology Program, Ottawa Hospital Research Institute; R.J. Black, MBBS, FRACP, Rheumatology Unit, Royal Adelaide Hospital; S. Halls, MSc, PhD, Faculty of Health and Applied Sciences, University of the West of England; M.J. Page, BBSc (Hons), PhD, School of Public Health and Preventive Medicine, Monash University; J.C. Robson, BSc, PhD, MRCP, Faculty of Health and Applied Sciences, University of the West of England; I. Sahbudin, BM, MSc, MRCP, Rheumatology Research Group, Institute of Inflammation and Ageing, University of Birmingham; H.J. Siddle, BSc (Hons), MSc, PhD, Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds; P. Sinnathurai, BSc (Med), MBBS, FRACP, Rheumatology Department, Royal North Shore Hospital, and Sydney Medical School, University of Sydney; K.S. Stok, PhD, Department of Biomedical Engineering, The University of Melbourne; B. Richards, MBBS (Hons), MSc, Department of Rheumatology, Royal Prince Alfred Hospital, and Sydney Medical School, University of Sydney.
| | - Peter S Tugwell
- From the Faculty of Health and Applied Sciences, University of the West of England, Bristol; Rheumatology Research Group, Institute of Inflammation and Ageing, University of Birmingham, Birmingham; Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, UK; Division of Rheumatology, Department of Medicine, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa; Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada; Rheumatology Unit, Royal Adelaide Hospital, Adelaide; School of Public Health and Preventive Medicine, Monash University, Melbourne; Rheumatology Department, Royal North Shore Hospital; Sydney Medical School, University of Sydney, Sydney; Department of Biomedical Engineering, The University of Melbourne, Victoria, Australia.,C.A. Flurey, MSc, PhD, CPsychol, FHEA, Faculty of Health and Applied Sciences, University of the West of England; P.S. Tugwell, MD, MSc, FRCPC, Division of Rheumatology, Department of Medicine, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa, and Clinical Epidemiology Program, Ottawa Hospital Research Institute; R.J. Black, MBBS, FRACP, Rheumatology Unit, Royal Adelaide Hospital; S. Halls, MSc, PhD, Faculty of Health and Applied Sciences, University of the West of England; M.J. Page, BBSc (Hons), PhD, School of Public Health and Preventive Medicine, Monash University; J.C. Robson, BSc, PhD, MRCP, Faculty of Health and Applied Sciences, University of the West of England; I. Sahbudin, BM, MSc, MRCP, Rheumatology Research Group, Institute of Inflammation and Ageing, University of Birmingham; H.J. Siddle, BSc (Hons), MSc, PhD, Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds; P. Sinnathurai, BSc (Med), MBBS, FRACP, Rheumatology Department, Royal North Shore Hospital, and Sydney Medical School, University of Sydney; K.S. Stok, PhD, Department of Biomedical Engineering, The University of Melbourne; B. Richards, MBBS (Hons), MSc, Department of Rheumatology, Royal Prince Alfred Hospital, and Sydney Medical School, University of Sydney
| | - Rachel J Black
- From the Faculty of Health and Applied Sciences, University of the West of England, Bristol; Rheumatology Research Group, Institute of Inflammation and Ageing, University of Birmingham, Birmingham; Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, UK; Division of Rheumatology, Department of Medicine, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa; Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada; Rheumatology Unit, Royal Adelaide Hospital, Adelaide; School of Public Health and Preventive Medicine, Monash University, Melbourne; Rheumatology Department, Royal North Shore Hospital; Sydney Medical School, University of Sydney, Sydney; Department of Biomedical Engineering, The University of Melbourne, Victoria, Australia.,C.A. Flurey, MSc, PhD, CPsychol, FHEA, Faculty of Health and Applied Sciences, University of the West of England; P.S. Tugwell, MD, MSc, FRCPC, Division of Rheumatology, Department of Medicine, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa, and Clinical Epidemiology Program, Ottawa Hospital Research Institute; R.J. Black, MBBS, FRACP, Rheumatology Unit, Royal Adelaide Hospital; S. Halls, MSc, PhD, Faculty of Health and Applied Sciences, University of the West of England; M.J. Page, BBSc (Hons), PhD, School of Public Health and Preventive Medicine, Monash University; J.C. Robson, BSc, PhD, MRCP, Faculty of Health and Applied Sciences, University of the West of England; I. Sahbudin, BM, MSc, MRCP, Rheumatology Research Group, Institute of Inflammation and Ageing, University of Birmingham; H.J. Siddle, BSc (Hons), MSc, PhD, Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds; P. Sinnathurai, BSc (Med), MBBS, FRACP, Rheumatology Department, Royal North Shore Hospital, and Sydney Medical School, University of Sydney; K.S. Stok, PhD, Department of Biomedical Engineering, The University of Melbourne; B. Richards, MBBS (Hons), MSc, Department of Rheumatology, Royal Prince Alfred Hospital, and Sydney Medical School, University of Sydney
| | - Serena Halls
- From the Faculty of Health and Applied Sciences, University of the West of England, Bristol; Rheumatology Research Group, Institute of Inflammation and Ageing, University of Birmingham, Birmingham; Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, UK; Division of Rheumatology, Department of Medicine, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa; Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada; Rheumatology Unit, Royal Adelaide Hospital, Adelaide; School of Public Health and Preventive Medicine, Monash University, Melbourne; Rheumatology Department, Royal North Shore Hospital; Sydney Medical School, University of Sydney, Sydney; Department of Biomedical Engineering, The University of Melbourne, Victoria, Australia.,C.A. Flurey, MSc, PhD, CPsychol, FHEA, Faculty of Health and Applied Sciences, University of the West of England; P.S. Tugwell, MD, MSc, FRCPC, Division of Rheumatology, Department of Medicine, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa, and Clinical Epidemiology Program, Ottawa Hospital Research Institute; R.J. Black, MBBS, FRACP, Rheumatology Unit, Royal Adelaide Hospital; S. Halls, MSc, PhD, Faculty of Health and Applied Sciences, University of the West of England; M.J. Page, BBSc (Hons), PhD, School of Public Health and Preventive Medicine, Monash University; J.C. Robson, BSc, PhD, MRCP, Faculty of Health and Applied Sciences, University of the West of England; I. Sahbudin, BM, MSc, MRCP, Rheumatology Research Group, Institute of Inflammation and Ageing, University of Birmingham; H.J. Siddle, BSc (Hons), MSc, PhD, Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds; P. Sinnathurai, BSc (Med), MBBS, FRACP, Rheumatology Department, Royal North Shore Hospital, and Sydney Medical School, University of Sydney; K.S. Stok, PhD, Department of Biomedical Engineering, The University of Melbourne; B. Richards, MBBS (Hons), MSc, Department of Rheumatology, Royal Prince Alfred Hospital, and Sydney Medical School, University of Sydney
| | - Matthew J Page
- From the Faculty of Health and Applied Sciences, University of the West of England, Bristol; Rheumatology Research Group, Institute of Inflammation and Ageing, University of Birmingham, Birmingham; Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, UK; Division of Rheumatology, Department of Medicine, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa; Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada; Rheumatology Unit, Royal Adelaide Hospital, Adelaide; School of Public Health and Preventive Medicine, Monash University, Melbourne; Rheumatology Department, Royal North Shore Hospital; Sydney Medical School, University of Sydney, Sydney; Department of Biomedical Engineering, The University of Melbourne, Victoria, Australia.,C.A. Flurey, MSc, PhD, CPsychol, FHEA, Faculty of Health and Applied Sciences, University of the West of England; P.S. Tugwell, MD, MSc, FRCPC, Division of Rheumatology, Department of Medicine, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa, and Clinical Epidemiology Program, Ottawa Hospital Research Institute; R.J. Black, MBBS, FRACP, Rheumatology Unit, Royal Adelaide Hospital; S. Halls, MSc, PhD, Faculty of Health and Applied Sciences, University of the West of England; M.J. Page, BBSc (Hons), PhD, School of Public Health and Preventive Medicine, Monash University; J.C. Robson, BSc, PhD, MRCP, Faculty of Health and Applied Sciences, University of the West of England; I. Sahbudin, BM, MSc, MRCP, Rheumatology Research Group, Institute of Inflammation and Ageing, University of Birmingham; H.J. Siddle, BSc (Hons), MSc, PhD, Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds; P. Sinnathurai, BSc (Med), MBBS, FRACP, Rheumatology Department, Royal North Shore Hospital, and Sydney Medical School, University of Sydney; K.S. Stok, PhD, Department of Biomedical Engineering, The University of Melbourne; B. Richards, MBBS (Hons), MSc, Department of Rheumatology, Royal Prince Alfred Hospital, and Sydney Medical School, University of Sydney
| | - Joanna C Robson
- From the Faculty of Health and Applied Sciences, University of the West of England, Bristol; Rheumatology Research Group, Institute of Inflammation and Ageing, University of Birmingham, Birmingham; Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, UK; Division of Rheumatology, Department of Medicine, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa; Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada; Rheumatology Unit, Royal Adelaide Hospital, Adelaide; School of Public Health and Preventive Medicine, Monash University, Melbourne; Rheumatology Department, Royal North Shore Hospital; Sydney Medical School, University of Sydney, Sydney; Department of Biomedical Engineering, The University of Melbourne, Victoria, Australia.,C.A. Flurey, MSc, PhD, CPsychol, FHEA, Faculty of Health and Applied Sciences, University of the West of England; P.S. Tugwell, MD, MSc, FRCPC, Division of Rheumatology, Department of Medicine, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa, and Clinical Epidemiology Program, Ottawa Hospital Research Institute; R.J. Black, MBBS, FRACP, Rheumatology Unit, Royal Adelaide Hospital; S. Halls, MSc, PhD, Faculty of Health and Applied Sciences, University of the West of England; M.J. Page, BBSc (Hons), PhD, School of Public Health and Preventive Medicine, Monash University; J.C. Robson, BSc, PhD, MRCP, Faculty of Health and Applied Sciences, University of the West of England; I. Sahbudin, BM, MSc, MRCP, Rheumatology Research Group, Institute of Inflammation and Ageing, University of Birmingham; H.J. Siddle, BSc (Hons), MSc, PhD, Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds; P. Sinnathurai, BSc (Med), MBBS, FRACP, Rheumatology Department, Royal North Shore Hospital, and Sydney Medical School, University of Sydney; K.S. Stok, PhD, Department of Biomedical Engineering, The University of Melbourne; B. Richards, MBBS (Hons), MSc, Department of Rheumatology, Royal Prince Alfred Hospital, and Sydney Medical School, University of Sydney
| | - Ilfita Sahbudin
- From the Faculty of Health and Applied Sciences, University of the West of England, Bristol; Rheumatology Research Group, Institute of Inflammation and Ageing, University of Birmingham, Birmingham; Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, UK; Division of Rheumatology, Department of Medicine, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa; Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada; Rheumatology Unit, Royal Adelaide Hospital, Adelaide; School of Public Health and Preventive Medicine, Monash University, Melbourne; Rheumatology Department, Royal North Shore Hospital; Sydney Medical School, University of Sydney, Sydney; Department of Biomedical Engineering, The University of Melbourne, Victoria, Australia.,C.A. Flurey, MSc, PhD, CPsychol, FHEA, Faculty of Health and Applied Sciences, University of the West of England; P.S. Tugwell, MD, MSc, FRCPC, Division of Rheumatology, Department of Medicine, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa, and Clinical Epidemiology Program, Ottawa Hospital Research Institute; R.J. Black, MBBS, FRACP, Rheumatology Unit, Royal Adelaide Hospital; S. Halls, MSc, PhD, Faculty of Health and Applied Sciences, University of the West of England; M.J. Page, BBSc (Hons), PhD, School of Public Health and Preventive Medicine, Monash University; J.C. Robson, BSc, PhD, MRCP, Faculty of Health and Applied Sciences, University of the West of England; I. Sahbudin, BM, MSc, MRCP, Rheumatology Research Group, Institute of Inflammation and Ageing, University of Birmingham; H.J. Siddle, BSc (Hons), MSc, PhD, Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds; P. Sinnathurai, BSc (Med), MBBS, FRACP, Rheumatology Department, Royal North Shore Hospital, and Sydney Medical School, University of Sydney; K.S. Stok, PhD, Department of Biomedical Engineering, The University of Melbourne; B. Richards, MBBS (Hons), MSc, Department of Rheumatology, Royal Prince Alfred Hospital, and Sydney Medical School, University of Sydney
| | - Heidi J Siddle
- From the Faculty of Health and Applied Sciences, University of the West of England, Bristol; Rheumatology Research Group, Institute of Inflammation and Ageing, University of Birmingham, Birmingham; Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, UK; Division of Rheumatology, Department of Medicine, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa; Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada; Rheumatology Unit, Royal Adelaide Hospital, Adelaide; School of Public Health and Preventive Medicine, Monash University, Melbourne; Rheumatology Department, Royal North Shore Hospital; Sydney Medical School, University of Sydney, Sydney; Department of Biomedical Engineering, The University of Melbourne, Victoria, Australia.,C.A. Flurey, MSc, PhD, CPsychol, FHEA, Faculty of Health and Applied Sciences, University of the West of England; P.S. Tugwell, MD, MSc, FRCPC, Division of Rheumatology, Department of Medicine, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa, and Clinical Epidemiology Program, Ottawa Hospital Research Institute; R.J. Black, MBBS, FRACP, Rheumatology Unit, Royal Adelaide Hospital; S. Halls, MSc, PhD, Faculty of Health and Applied Sciences, University of the West of England; M.J. Page, BBSc (Hons), PhD, School of Public Health and Preventive Medicine, Monash University; J.C. Robson, BSc, PhD, MRCP, Faculty of Health and Applied Sciences, University of the West of England; I. Sahbudin, BM, MSc, MRCP, Rheumatology Research Group, Institute of Inflammation and Ageing, University of Birmingham; H.J. Siddle, BSc (Hons), MSc, PhD, Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds; P. Sinnathurai, BSc (Med), MBBS, FRACP, Rheumatology Department, Royal North Shore Hospital, and Sydney Medical School, University of Sydney; K.S. Stok, PhD, Department of Biomedical Engineering, The University of Melbourne; B. Richards, MBBS (Hons), MSc, Department of Rheumatology, Royal Prince Alfred Hospital, and Sydney Medical School, University of Sydney
| | - Premarani Sinnathurai
- From the Faculty of Health and Applied Sciences, University of the West of England, Bristol; Rheumatology Research Group, Institute of Inflammation and Ageing, University of Birmingham, Birmingham; Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, UK; Division of Rheumatology, Department of Medicine, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa; Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada; Rheumatology Unit, Royal Adelaide Hospital, Adelaide; School of Public Health and Preventive Medicine, Monash University, Melbourne; Rheumatology Department, Royal North Shore Hospital; Sydney Medical School, University of Sydney, Sydney; Department of Biomedical Engineering, The University of Melbourne, Victoria, Australia.,C.A. Flurey, MSc, PhD, CPsychol, FHEA, Faculty of Health and Applied Sciences, University of the West of England; P.S. Tugwell, MD, MSc, FRCPC, Division of Rheumatology, Department of Medicine, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa, and Clinical Epidemiology Program, Ottawa Hospital Research Institute; R.J. Black, MBBS, FRACP, Rheumatology Unit, Royal Adelaide Hospital; S. Halls, MSc, PhD, Faculty of Health and Applied Sciences, University of the West of England; M.J. Page, BBSc (Hons), PhD, School of Public Health and Preventive Medicine, Monash University; J.C. Robson, BSc, PhD, MRCP, Faculty of Health and Applied Sciences, University of the West of England; I. Sahbudin, BM, MSc, MRCP, Rheumatology Research Group, Institute of Inflammation and Ageing, University of Birmingham; H.J. Siddle, BSc (Hons), MSc, PhD, Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds; P. Sinnathurai, BSc (Med), MBBS, FRACP, Rheumatology Department, Royal North Shore Hospital, and Sydney Medical School, University of Sydney; K.S. Stok, PhD, Department of Biomedical Engineering, The University of Melbourne; B. Richards, MBBS (Hons), MSc, Department of Rheumatology, Royal Prince Alfred Hospital, and Sydney Medical School, University of Sydney
| | - Kathryn S Stok
- From the Faculty of Health and Applied Sciences, University of the West of England, Bristol; Rheumatology Research Group, Institute of Inflammation and Ageing, University of Birmingham, Birmingham; Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, UK; Division of Rheumatology, Department of Medicine, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa; Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada; Rheumatology Unit, Royal Adelaide Hospital, Adelaide; School of Public Health and Preventive Medicine, Monash University, Melbourne; Rheumatology Department, Royal North Shore Hospital; Sydney Medical School, University of Sydney, Sydney; Department of Biomedical Engineering, The University of Melbourne, Victoria, Australia.,C.A. Flurey, MSc, PhD, CPsychol, FHEA, Faculty of Health and Applied Sciences, University of the West of England; P.S. Tugwell, MD, MSc, FRCPC, Division of Rheumatology, Department of Medicine, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa, and Clinical Epidemiology Program, Ottawa Hospital Research Institute; R.J. Black, MBBS, FRACP, Rheumatology Unit, Royal Adelaide Hospital; S. Halls, MSc, PhD, Faculty of Health and Applied Sciences, University of the West of England; M.J. Page, BBSc (Hons), PhD, School of Public Health and Preventive Medicine, Monash University; J.C. Robson, BSc, PhD, MRCP, Faculty of Health and Applied Sciences, University of the West of England; I. Sahbudin, BM, MSc, MRCP, Rheumatology Research Group, Institute of Inflammation and Ageing, University of Birmingham; H.J. Siddle, BSc (Hons), MSc, PhD, Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds; P. Sinnathurai, BSc (Med), MBBS, FRACP, Rheumatology Department, Royal North Shore Hospital, and Sydney Medical School, University of Sydney; K.S. Stok, PhD, Department of Biomedical Engineering, The University of Melbourne; B. Richards, MBBS (Hons), MSc, Department of Rheumatology, Royal Prince Alfred Hospital, and Sydney Medical School, University of Sydney
| | - Bethan Richards
- From the Faculty of Health and Applied Sciences, University of the West of England, Bristol; Rheumatology Research Group, Institute of Inflammation and Ageing, University of Birmingham, Birmingham; Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, UK; Division of Rheumatology, Department of Medicine, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa; Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada; Rheumatology Unit, Royal Adelaide Hospital, Adelaide; School of Public Health and Preventive Medicine, Monash University, Melbourne; Rheumatology Department, Royal North Shore Hospital; Sydney Medical School, University of Sydney, Sydney; Department of Biomedical Engineering, The University of Melbourne, Victoria, Australia.,C.A. Flurey, MSc, PhD, CPsychol, FHEA, Faculty of Health and Applied Sciences, University of the West of England; P.S. Tugwell, MD, MSc, FRCPC, Division of Rheumatology, Department of Medicine, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa, and Clinical Epidemiology Program, Ottawa Hospital Research Institute; R.J. Black, MBBS, FRACP, Rheumatology Unit, Royal Adelaide Hospital; S. Halls, MSc, PhD, Faculty of Health and Applied Sciences, University of the West of England; M.J. Page, BBSc (Hons), PhD, School of Public Health and Preventive Medicine, Monash University; J.C. Robson, BSc, PhD, MRCP, Faculty of Health and Applied Sciences, University of the West of England; I. Sahbudin, BM, MSc, MRCP, Rheumatology Research Group, Institute of Inflammation and Ageing, University of Birmingham; H.J. Siddle, BSc (Hons), MSc, PhD, Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds; P. Sinnathurai, BSc (Med), MBBS, FRACP, Rheumatology Department, Royal North Shore Hospital, and Sydney Medical School, University of Sydney; K.S. Stok, PhD, Department of Biomedical Engineering, The University of Melbourne; B. Richards, MBBS (Hons), MSc, Department of Rheumatology, Royal Prince Alfred Hospital, and Sydney Medical School, University of Sydney
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Manske SL, Brunet SC, Finzel S, Stok KS, Conaghan PG, Boyd SK, Barnabe C. The SPECTRA Collaboration OMERACT Working Group: Construct Validity of Joint Space Outcomes with High-resolution Peripheral Quantitative Computed Tomography. J Rheumatol 2019; 46:1369-1373. [PMID: 30647172 DOI: 10.3899/jrheum.180870] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/14/2018] [Indexed: 01/19/2023]
Abstract
OBJECTIVE We assessed construct validity of high-resolution peripheral quantitative computed tomography (HR-pQCT) joint space outcomes by comparison with radiographs in patients with rheumatoid arthritis. METHODS In 43 patients, quantitative, volumetric, HR-pQCT measurements were compared with ordinal Sharp/van der Heijde scoring (SvdH) in the 2nd and 3rd metacarpophalangeal joints. RESULTS Generalized estimating equations showed that joint space minimum, SD, and asymmetry by HR-pQCT were associated with SvdH scores (p < 0.05). There was a considerable range in HR-pQCT measurements at SvdH equal to 0. CONCLUSION HR-pQCT demonstrated construct validity outcomes and provides improved 3-D visualization of joint space.
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Affiliation(s)
- Sarah L Manske
- From the Department of Radiology, and Department of Medicine, McCaig Institute for Bone and Joint Health, Cumming School of Medicine, University of Calgary; Biomedical Engineering Graduate Program, Department of Radiology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada; Department of Rheumatology and Clinical Immunology, Medical Center University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany; Department of Biomedical Engineering, The University of Melbourne, Parkville, Australia; Leeds Institute for Rheumatic and Musculoskeletal Medicine, University of Leeds and UK National Institute for Health Research (NIHR) Leeds Biomedical Research Centre, Leeds, UK. .,S.L. Manske, PhD, Department of Radiology, McCaig Institute for Bone and Joint Health, Cumming School of Medicine, University of Calgary, and Biomedical Engineering Graduate Program, Department of Radiology, Cumming School of Medicine, University of Calgary; S.C. Brunet, BSc, Department of Radiology, McCaig Institute for Bone and Joint Health, Cumming School of Medicine, University of Calgary, and Biomedical Engineering Graduate Program, Department of Radiology, Cumming School of Medicine, University of Calgary; S. Finzel, MD, Department of Rheumatology and Clinical Immunology, Medical Center University of Freiburg, Faculty of Medicine, University of Freiburg; K.S. Stok, PhD, Department of Biomedical Engineering, The University of Melbourne; P.G. Conaghan, MD, PhD, Leeds Institute for Rheumatic and Musculoskeletal Medicine, University of Leeds, and NIHR Leeds Biomedical Research Centre; S.K. Boyd, PhD, Department of Radiology, McCaig Institute for Bone and Joint Health, Cumming School of Medicine, University of Calgary, and Biomedical Engineering Graduate Program, Department of Radiology, Cumming School of Medicine, University of Calgary; C. Barnabe, MSc, MD, Department of Medicine, McCaig Institute for Bone and Joint Health, Cumming School of Medicine, University of Calgary.
| | - Scott C Brunet
- From the Department of Radiology, and Department of Medicine, McCaig Institute for Bone and Joint Health, Cumming School of Medicine, University of Calgary; Biomedical Engineering Graduate Program, Department of Radiology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada; Department of Rheumatology and Clinical Immunology, Medical Center University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany; Department of Biomedical Engineering, The University of Melbourne, Parkville, Australia; Leeds Institute for Rheumatic and Musculoskeletal Medicine, University of Leeds and UK National Institute for Health Research (NIHR) Leeds Biomedical Research Centre, Leeds, UK.,S.L. Manske, PhD, Department of Radiology, McCaig Institute for Bone and Joint Health, Cumming School of Medicine, University of Calgary, and Biomedical Engineering Graduate Program, Department of Radiology, Cumming School of Medicine, University of Calgary; S.C. Brunet, BSc, Department of Radiology, McCaig Institute for Bone and Joint Health, Cumming School of Medicine, University of Calgary, and Biomedical Engineering Graduate Program, Department of Radiology, Cumming School of Medicine, University of Calgary; S. Finzel, MD, Department of Rheumatology and Clinical Immunology, Medical Center University of Freiburg, Faculty of Medicine, University of Freiburg; K.S. Stok, PhD, Department of Biomedical Engineering, The University of Melbourne; P.G. Conaghan, MD, PhD, Leeds Institute for Rheumatic and Musculoskeletal Medicine, University of Leeds, and NIHR Leeds Biomedical Research Centre; S.K. Boyd, PhD, Department of Radiology, McCaig Institute for Bone and Joint Health, Cumming School of Medicine, University of Calgary, and Biomedical Engineering Graduate Program, Department of Radiology, Cumming School of Medicine, University of Calgary; C. Barnabe, MSc, MD, Department of Medicine, McCaig Institute for Bone and Joint Health, Cumming School of Medicine, University of Calgary
| | - Stephanie Finzel
- From the Department of Radiology, and Department of Medicine, McCaig Institute for Bone and Joint Health, Cumming School of Medicine, University of Calgary; Biomedical Engineering Graduate Program, Department of Radiology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada; Department of Rheumatology and Clinical Immunology, Medical Center University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany; Department of Biomedical Engineering, The University of Melbourne, Parkville, Australia; Leeds Institute for Rheumatic and Musculoskeletal Medicine, University of Leeds and UK National Institute for Health Research (NIHR) Leeds Biomedical Research Centre, Leeds, UK.,S.L. Manske, PhD, Department of Radiology, McCaig Institute for Bone and Joint Health, Cumming School of Medicine, University of Calgary, and Biomedical Engineering Graduate Program, Department of Radiology, Cumming School of Medicine, University of Calgary; S.C. Brunet, BSc, Department of Radiology, McCaig Institute for Bone and Joint Health, Cumming School of Medicine, University of Calgary, and Biomedical Engineering Graduate Program, Department of Radiology, Cumming School of Medicine, University of Calgary; S. Finzel, MD, Department of Rheumatology and Clinical Immunology, Medical Center University of Freiburg, Faculty of Medicine, University of Freiburg; K.S. Stok, PhD, Department of Biomedical Engineering, The University of Melbourne; P.G. Conaghan, MD, PhD, Leeds Institute for Rheumatic and Musculoskeletal Medicine, University of Leeds, and NIHR Leeds Biomedical Research Centre; S.K. Boyd, PhD, Department of Radiology, McCaig Institute for Bone and Joint Health, Cumming School of Medicine, University of Calgary, and Biomedical Engineering Graduate Program, Department of Radiology, Cumming School of Medicine, University of Calgary; C. Barnabe, MSc, MD, Department of Medicine, McCaig Institute for Bone and Joint Health, Cumming School of Medicine, University of Calgary
| | - Kathryn S Stok
- From the Department of Radiology, and Department of Medicine, McCaig Institute for Bone and Joint Health, Cumming School of Medicine, University of Calgary; Biomedical Engineering Graduate Program, Department of Radiology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada; Department of Rheumatology and Clinical Immunology, Medical Center University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany; Department of Biomedical Engineering, The University of Melbourne, Parkville, Australia; Leeds Institute for Rheumatic and Musculoskeletal Medicine, University of Leeds and UK National Institute for Health Research (NIHR) Leeds Biomedical Research Centre, Leeds, UK.,S.L. Manske, PhD, Department of Radiology, McCaig Institute for Bone and Joint Health, Cumming School of Medicine, University of Calgary, and Biomedical Engineering Graduate Program, Department of Radiology, Cumming School of Medicine, University of Calgary; S.C. Brunet, BSc, Department of Radiology, McCaig Institute for Bone and Joint Health, Cumming School of Medicine, University of Calgary, and Biomedical Engineering Graduate Program, Department of Radiology, Cumming School of Medicine, University of Calgary; S. Finzel, MD, Department of Rheumatology and Clinical Immunology, Medical Center University of Freiburg, Faculty of Medicine, University of Freiburg; K.S. Stok, PhD, Department of Biomedical Engineering, The University of Melbourne; P.G. Conaghan, MD, PhD, Leeds Institute for Rheumatic and Musculoskeletal Medicine, University of Leeds, and NIHR Leeds Biomedical Research Centre; S.K. Boyd, PhD, Department of Radiology, McCaig Institute for Bone and Joint Health, Cumming School of Medicine, University of Calgary, and Biomedical Engineering Graduate Program, Department of Radiology, Cumming School of Medicine, University of Calgary; C. Barnabe, MSc, MD, Department of Medicine, McCaig Institute for Bone and Joint Health, Cumming School of Medicine, University of Calgary
| | - Philip G Conaghan
- From the Department of Radiology, and Department of Medicine, McCaig Institute for Bone and Joint Health, Cumming School of Medicine, University of Calgary; Biomedical Engineering Graduate Program, Department of Radiology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada; Department of Rheumatology and Clinical Immunology, Medical Center University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany; Department of Biomedical Engineering, The University of Melbourne, Parkville, Australia; Leeds Institute for Rheumatic and Musculoskeletal Medicine, University of Leeds and UK National Institute for Health Research (NIHR) Leeds Biomedical Research Centre, Leeds, UK.,S.L. Manske, PhD, Department of Radiology, McCaig Institute for Bone and Joint Health, Cumming School of Medicine, University of Calgary, and Biomedical Engineering Graduate Program, Department of Radiology, Cumming School of Medicine, University of Calgary; S.C. Brunet, BSc, Department of Radiology, McCaig Institute for Bone and Joint Health, Cumming School of Medicine, University of Calgary, and Biomedical Engineering Graduate Program, Department of Radiology, Cumming School of Medicine, University of Calgary; S. Finzel, MD, Department of Rheumatology and Clinical Immunology, Medical Center University of Freiburg, Faculty of Medicine, University of Freiburg; K.S. Stok, PhD, Department of Biomedical Engineering, The University of Melbourne; P.G. Conaghan, MD, PhD, Leeds Institute for Rheumatic and Musculoskeletal Medicine, University of Leeds, and NIHR Leeds Biomedical Research Centre; S.K. Boyd, PhD, Department of Radiology, McCaig Institute for Bone and Joint Health, Cumming School of Medicine, University of Calgary, and Biomedical Engineering Graduate Program, Department of Radiology, Cumming School of Medicine, University of Calgary; C. Barnabe, MSc, MD, Department of Medicine, McCaig Institute for Bone and Joint Health, Cumming School of Medicine, University of Calgary
| | - Steven K Boyd
- From the Department of Radiology, and Department of Medicine, McCaig Institute for Bone and Joint Health, Cumming School of Medicine, University of Calgary; Biomedical Engineering Graduate Program, Department of Radiology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada; Department of Rheumatology and Clinical Immunology, Medical Center University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany; Department of Biomedical Engineering, The University of Melbourne, Parkville, Australia; Leeds Institute for Rheumatic and Musculoskeletal Medicine, University of Leeds and UK National Institute for Health Research (NIHR) Leeds Biomedical Research Centre, Leeds, UK.,S.L. Manske, PhD, Department of Radiology, McCaig Institute for Bone and Joint Health, Cumming School of Medicine, University of Calgary, and Biomedical Engineering Graduate Program, Department of Radiology, Cumming School of Medicine, University of Calgary; S.C. Brunet, BSc, Department of Radiology, McCaig Institute for Bone and Joint Health, Cumming School of Medicine, University of Calgary, and Biomedical Engineering Graduate Program, Department of Radiology, Cumming School of Medicine, University of Calgary; S. Finzel, MD, Department of Rheumatology and Clinical Immunology, Medical Center University of Freiburg, Faculty of Medicine, University of Freiburg; K.S. Stok, PhD, Department of Biomedical Engineering, The University of Melbourne; P.G. Conaghan, MD, PhD, Leeds Institute for Rheumatic and Musculoskeletal Medicine, University of Leeds, and NIHR Leeds Biomedical Research Centre; S.K. Boyd, PhD, Department of Radiology, McCaig Institute for Bone and Joint Health, Cumming School of Medicine, University of Calgary, and Biomedical Engineering Graduate Program, Department of Radiology, Cumming School of Medicine, University of Calgary; C. Barnabe, MSc, MD, Department of Medicine, McCaig Institute for Bone and Joint Health, Cumming School of Medicine, University of Calgary
| | - Cheryl Barnabe
- From the Department of Radiology, and Department of Medicine, McCaig Institute for Bone and Joint Health, Cumming School of Medicine, University of Calgary; Biomedical Engineering Graduate Program, Department of Radiology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada; Department of Rheumatology and Clinical Immunology, Medical Center University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany; Department of Biomedical Engineering, The University of Melbourne, Parkville, Australia; Leeds Institute for Rheumatic and Musculoskeletal Medicine, University of Leeds and UK National Institute for Health Research (NIHR) Leeds Biomedical Research Centre, Leeds, UK.,S.L. Manske, PhD, Department of Radiology, McCaig Institute for Bone and Joint Health, Cumming School of Medicine, University of Calgary, and Biomedical Engineering Graduate Program, Department of Radiology, Cumming School of Medicine, University of Calgary; S.C. Brunet, BSc, Department of Radiology, McCaig Institute for Bone and Joint Health, Cumming School of Medicine, University of Calgary, and Biomedical Engineering Graduate Program, Department of Radiology, Cumming School of Medicine, University of Calgary; S. Finzel, MD, Department of Rheumatology and Clinical Immunology, Medical Center University of Freiburg, Faculty of Medicine, University of Freiburg; K.S. Stok, PhD, Department of Biomedical Engineering, The University of Melbourne; P.G. Conaghan, MD, PhD, Leeds Institute for Rheumatic and Musculoskeletal Medicine, University of Leeds, and NIHR Leeds Biomedical Research Centre; S.K. Boyd, PhD, Department of Radiology, McCaig Institute for Bone and Joint Health, Cumming School of Medicine, University of Calgary, and Biomedical Engineering Graduate Program, Department of Radiology, Cumming School of Medicine, University of Calgary; C. Barnabe, MSc, MD, Department of Medicine, McCaig Institute for Bone and Joint Health, Cumming School of Medicine, University of Calgary
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Peters M, de Jong J, Scharmga A, van Tubergen A, Geusens P, Loeffen D, Weijers R, Boyd SK, Barnabe C, Stok KS, van Rietbergen B, van den Bergh J. An automated algorithm for the detection of cortical interruptions and its underlying loss of trabecular bone; a reproducibility study. BMC Med Imaging 2018; 18:13. [PMID: 29764383 PMCID: PMC5952860 DOI: 10.1186/s12880-018-0255-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Accepted: 04/30/2018] [Indexed: 01/19/2023] Open
Abstract
Background We developed a semi-automated algorithm that detects cortical interruptions in finger joints using high-resolution peripheral quantitative computed tomography (HR-pQCT), and extended it with trabecular void volume measurement. In this study we tested the reproducibility of the algorithm using scan/re-scan data. Methods Second and third metacarpophalangeal joints of 21 subjects (mean age 49 (SD 11) years, 17 early rheumatoid arthritis and 4 undifferentiated arthritis, all diagnosed < 1 year ago) were imaged twice by HR-pQCT on the same day with repositioning between scans. The images were analyzed twice by one operator (OP1) and once by an additional operator (OP2), who independently corrected the bone contours when necessary. The number, surface and volume of interruptions per joint were obtained. Intra- and inter-operator reliability and intra-operator reproducibility were determined by intra-class correlation coefficients (ICC). Intra-operator reproducibility errors were determined as the least significant change (LSCSD). Results Per joint, the mean number of interruptions was 3.1 (SD 3.6), mean interruption surface 4.2 (SD 7.2) mm2, and mean interruption volume 3.5 (SD 10.6) mm3 for OP1. Intra- and inter-operator reliability was excellent for the cortical interruption parameters (ICC ≥0.91), except good for the inter-operator reliability of the interruption surface (ICC = 0.70). The LSCSD per joint was 4.2 for the number of interruptions, 5.8 mm2 for interruption surface, and 3.2 mm3 for interruption volume. Conclusions The algorithm was highly reproducible in the detection of cortical interruptions and their volume. Based on the LSC findings, the potential value of this algorithm for monitoring structural damage in the joints in early arthritis patients needs to be tested in clinical studies. Electronic supplementary material The online version of this article (10.1186/s12880-018-0255-7) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- M Peters
- Department of Internal Medicine, Division of Rheumatology, Maastricht University Medical Centre, P.O. Box 5800, NL-6202, Maastricht, AZ, the Netherlands. .,CAPHRI, Care and Public Health Research Institute, Maastricht University, Maastricht, the Netherlands. .,NUTRIM School for Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, the Netherlands.
| | - J de Jong
- Department of Internal Medicine, Division of Rheumatology, Maastricht University Medical Centre, P.O. Box 5800, NL-6202, Maastricht, AZ, the Netherlands.,NUTRIM School for Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, the Netherlands.,Department of Radiology, Maastricht University Medical Centre, Maastricht, the Netherlands
| | - A Scharmga
- Department of Internal Medicine, Division of Rheumatology, Maastricht University Medical Centre, P.O. Box 5800, NL-6202, Maastricht, AZ, the Netherlands.,CAPHRI, Care and Public Health Research Institute, Maastricht University, Maastricht, the Netherlands.,NUTRIM School for Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, the Netherlands
| | - A van Tubergen
- Department of Internal Medicine, Division of Rheumatology, Maastricht University Medical Centre, P.O. Box 5800, NL-6202, Maastricht, AZ, the Netherlands.,CAPHRI, Care and Public Health Research Institute, Maastricht University, Maastricht, the Netherlands
| | - P Geusens
- Department of Internal Medicine, Division of Rheumatology, Maastricht University Medical Centre, P.O. Box 5800, NL-6202, Maastricht, AZ, the Netherlands.,CAPHRI, Care and Public Health Research Institute, Maastricht University, Maastricht, the Netherlands.,Faculty of Medicine and Life Sciences, Hasselt University, Hasselt, Belgium
| | - D Loeffen
- Department of Radiology, Maastricht University Medical Centre, Maastricht, the Netherlands
| | - R Weijers
- Department of Radiology, Maastricht University Medical Centre, Maastricht, the Netherlands
| | - S K Boyd
- Cumming School of Medicine, McCaig Institute for Bone and Joint Health, University of Calgary, Calgary, Canada
| | - C Barnabe
- Cumming School of Medicine, McCaig Institute for Bone and Joint Health, University of Calgary, Calgary, Canada
| | - K S Stok
- Department of Biomedical Engineering, the University of Melbourne, Melbourne, Australia
| | - B van Rietbergen
- Faculty of Biomedical Engineering, Eindhoven University of Technology, Eindhoven, the Netherlands.,Department of Orthopaedic Surgery, Maastricht University Medical Centre, Maastricht, the Netherlands
| | - J van den Bergh
- Department of Internal Medicine, Division of Rheumatology, Maastricht University Medical Centre, P.O. Box 5800, NL-6202, Maastricht, AZ, the Netherlands.,NUTRIM School for Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, the Netherlands.,Faculty of Medicine and Life Sciences, Hasselt University, Hasselt, Belgium.,Department of Internal Medicine, VieCuri Medical Centre, Venlo, the Netherlands
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Stok KS, Finzel S, Burghardt AJ, Conaghan PG, Barnabe C. The SPECTRA Collaboration OMERACT Special Interest Group: Current Research and Future Directions. J Rheumatol 2017; 44:1911-1915. [PMID: 28765253 DOI: 10.3899/jrheum.161197] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/03/2017] [Indexed: 01/17/2023]
Abstract
OBJECTIVE High-resolution peripheral quantitative computed tomography (HR-pQCT) has the potential to improve radiographic progression determination in clinical trials and longitudinal observational studies. The goal of this work was to describe the current state of research presented at Outcome Measures in Rheumatology (OMERACT) 2016 and ensuing future directions outlined during discussion among attendees. METHODS At OMERACT 2016, SPECTRA (Study grouP for xtrEme-Computed Tomography in Rheumatoid Arthritis) introduced efforts to (1) validate the HR-pQCT according to OMERACT guidelines, focusing on rheumatoid arthritis (RA), and (2) find alternatives for automated joint space width (JSW) analysis. The Special Interest Group (SIG) was presented to patient research partners, physicians/researchers, and SIG leaders followed by a 40-min discussion on future directions. RESULTS A consensus definition for RA erosion using HR-pQCT was demonstrated through a systematic literature review and a Delphi exercise. Histopathology and perfusion studies were presented that analyzed the true characteristics of cortical breaks in HR-pQCT images, and to provide criterion validity. Results indicate that readers were able to discriminate between erosion and small vascular channels. Moderate reliability (ICC 0.206-0.871) of direct erosion size measures was shown, which improved (> 0.9) only when experienced readers were considered. Quantification of erosion size was presented for scoring, direct measurement, and volumetric approaches, as well as a reliability exercise for direct measurement. Three methods for JSW measurement were compared, all indicating excellent reproducibility with differences at the extremes (i.e., near-zero and joint edge thickness). CONCLUSION Initial reports on HR-pQCT are promising; however, to consider its use in clinical trials and longitudinal observational studies, it is imperative to assess the responsiveness of erosion measurement quantification.
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Affiliation(s)
- Kathryn S Stok
- From the Institute for Biomechanics, ETH Zurich, Zurich, Switzerland; Department of Biomedical Engineering, University of Melbourne, Melbourne, Victoria, Australia; Department of Rheumatology and Clinical Immunology, Faculty of Medicine, University of Freiburg, Freiburg, Germany; Department of Radiology and Biomedical Imaging, University of California, San Francisco, California, USA; Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds and UK National Institute for Health Research (NIHR) Leeds Biomedical Research Centre, Leeds, UK; Departments of Medicine and Community Health Sciences, University of Calgary; McCaig Institute for Bone and Joint Health, University of Calgary, Calgary, Alberta, Canada. .,K.S. Stok, PhD, Senior Lecturer, Institute for Biomechanics, ETH Zurich, and Department of Biomedical Engineering, University of Melbourne; S. Finzel, MD, Senior Attending Physician, Department of Rheumatology and Clinical Immunology, Faculty of Medicine, University of Freiburg; A.J. Burghardt, BS, Research Specialist, Department of Radiology and Biomedical Imaging, University of California; P.G. Conaghan, MD, PhD, Professor, Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds and NIHR Leeds Biomedical Research Centre; C. Barnabe, MD, MSc, Associate Professor, Departments of Medicine and Community Health Sciences, University of Calgary, and McCaig Institute for Bone and Joint Health, University of Calgary.
| | - Stephanie Finzel
- From the Institute for Biomechanics, ETH Zurich, Zurich, Switzerland; Department of Biomedical Engineering, University of Melbourne, Melbourne, Victoria, Australia; Department of Rheumatology and Clinical Immunology, Faculty of Medicine, University of Freiburg, Freiburg, Germany; Department of Radiology and Biomedical Imaging, University of California, San Francisco, California, USA; Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds and UK National Institute for Health Research (NIHR) Leeds Biomedical Research Centre, Leeds, UK; Departments of Medicine and Community Health Sciences, University of Calgary; McCaig Institute for Bone and Joint Health, University of Calgary, Calgary, Alberta, Canada.,K.S. Stok, PhD, Senior Lecturer, Institute for Biomechanics, ETH Zurich, and Department of Biomedical Engineering, University of Melbourne; S. Finzel, MD, Senior Attending Physician, Department of Rheumatology and Clinical Immunology, Faculty of Medicine, University of Freiburg; A.J. Burghardt, BS, Research Specialist, Department of Radiology and Biomedical Imaging, University of California; P.G. Conaghan, MD, PhD, Professor, Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds and NIHR Leeds Biomedical Research Centre; C. Barnabe, MD, MSc, Associate Professor, Departments of Medicine and Community Health Sciences, University of Calgary, and McCaig Institute for Bone and Joint Health, University of Calgary
| | - Andrew J Burghardt
- From the Institute for Biomechanics, ETH Zurich, Zurich, Switzerland; Department of Biomedical Engineering, University of Melbourne, Melbourne, Victoria, Australia; Department of Rheumatology and Clinical Immunology, Faculty of Medicine, University of Freiburg, Freiburg, Germany; Department of Radiology and Biomedical Imaging, University of California, San Francisco, California, USA; Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds and UK National Institute for Health Research (NIHR) Leeds Biomedical Research Centre, Leeds, UK; Departments of Medicine and Community Health Sciences, University of Calgary; McCaig Institute for Bone and Joint Health, University of Calgary, Calgary, Alberta, Canada.,K.S. Stok, PhD, Senior Lecturer, Institute for Biomechanics, ETH Zurich, and Department of Biomedical Engineering, University of Melbourne; S. Finzel, MD, Senior Attending Physician, Department of Rheumatology and Clinical Immunology, Faculty of Medicine, University of Freiburg; A.J. Burghardt, BS, Research Specialist, Department of Radiology and Biomedical Imaging, University of California; P.G. Conaghan, MD, PhD, Professor, Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds and NIHR Leeds Biomedical Research Centre; C. Barnabe, MD, MSc, Associate Professor, Departments of Medicine and Community Health Sciences, University of Calgary, and McCaig Institute for Bone and Joint Health, University of Calgary
| | - Philip G Conaghan
- From the Institute for Biomechanics, ETH Zurich, Zurich, Switzerland; Department of Biomedical Engineering, University of Melbourne, Melbourne, Victoria, Australia; Department of Rheumatology and Clinical Immunology, Faculty of Medicine, University of Freiburg, Freiburg, Germany; Department of Radiology and Biomedical Imaging, University of California, San Francisco, California, USA; Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds and UK National Institute for Health Research (NIHR) Leeds Biomedical Research Centre, Leeds, UK; Departments of Medicine and Community Health Sciences, University of Calgary; McCaig Institute for Bone and Joint Health, University of Calgary, Calgary, Alberta, Canada.,K.S. Stok, PhD, Senior Lecturer, Institute for Biomechanics, ETH Zurich, and Department of Biomedical Engineering, University of Melbourne; S. Finzel, MD, Senior Attending Physician, Department of Rheumatology and Clinical Immunology, Faculty of Medicine, University of Freiburg; A.J. Burghardt, BS, Research Specialist, Department of Radiology and Biomedical Imaging, University of California; P.G. Conaghan, MD, PhD, Professor, Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds and NIHR Leeds Biomedical Research Centre; C. Barnabe, MD, MSc, Associate Professor, Departments of Medicine and Community Health Sciences, University of Calgary, and McCaig Institute for Bone and Joint Health, University of Calgary
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Nagaraj S, Finzel S, Stok KS, Barnabe C. High-resolution Peripheral Quantitative Computed Tomography Imaging in the Assessment of Periarticular Bone of Metacarpophalangeal and Wrist Joints. J Rheumatol 2016; 43:1921-1934. [DOI: 10.3899/jrheum.160647] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Objective.To synthesize descriptions of periarticular findings at the metacarpophalangeal (MCP) and wrist joints in different types of arthritis and in the normal state imaged by high-resolution peripheral quantitative computed tomography (HR-pQCT); to assemble the literature reporting on the ability of HR-pQCT to detect findings relative to other imaging modalities; and to collate results on the reproducibility of image interpretation.Methods.A systematic literature review was performed using terms for HR-pQCT and MCP or wrist joints using medical literature databases and conference abstracts. Any study describing predefined pathology findings, comparison to another radiographic technique, or a measure of reproducibility was included with no limitation by disease state.Results.We identified 44 studies meeting inclusion criteria from the 1901 articles identified by our search. All 44 reported on pathology findings, including erosions (n = 31), bone microarchitecture (n = 10) and bone mineral density (n = 10) variables, joint space evaluation (n = 7), or osteophyte characterization (n = 7). Seventeen of the studies compared HR-pQCT findings to either plain radiography (n = 9), ultrasound (n = 4), magnetic resonance imaging (n = 5), or microcomputed tomography (n = 2), with HR-pQCT having high sensitivity for erosion detection. Twenty-four studies included an assessment of reproducibility with good to excellent metrics, and highlighting the critical importance of positioning when assessing joint space variables.Conclusion.Despite high sensitivity for erosion detection and good reproducibility, more research is required to determine where HR-pQCT can be applied to enhance our understanding of periarticular bone changes in a variety of arthritis conditions.
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Barnabe C, Toepfer D, Marotte H, Hauge EM, Scharmga A, Kocijan R, Kraus S, Boutroy S, Schett G, Keller KK, de Jong J, Stok KS, Finzel S. Definition for Rheumatoid Arthritis Erosions Imaged with High Resolution Peripheral Quantitative Computed Tomography and Interreader Reliability for Detection and Measurement. J Rheumatol 2016; 43:1935-1940. [DOI: 10.3899/jrheum.160648] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Objective.High-resolution peripheral quantitative computed tomography (HR-pQCT) sensitively detects erosions in rheumatoid arthritis (RA); however, nonpathological cortical bone disruptions are potentially misclassified as erosive. Our objectives were to set and test a definition for pathologic cortical bone disruptions in RA and to standardize reference landmarks for measuring erosion size.Methods.HR-pQCT images of metacarpophalangeal joints of RA and control subjects were used in an iterative process to achieve consensus on the definition and reference landmarks. Independent readers (n = 11) applied the definition to score 58 joints and measure pathologic erosions in 2 perpendicular multiplanar reformations for their maximum width and depth. Interreader reliability for erosion detection and variability in measurements between readers [root mean square coefficient of variation (RMSCV), intraclass correlation (ICC)] were calculated.Results.Pathologic erosions were defined as cortical breaks extending over a minimum of 2 consecutive slices in perpendicular planes, with underlying trabecular bone loss and a nonlinear shape. Interreader agreement for classifying pathologic erosions was 90.2%, whereas variability for width and depth erosion assessment was observed (RMSCV perpendicular width 12.3%, axial width 20.6%, perpendicular depth 24.0%, axial depth 22.2%; ICC perpendicular width 0.206, axial width 0.665, axial depth 0.871, perpendicular depth 0.783). Mean erosion width was 1.84 mm (range 0.16–8.90) and mean depth was 1.86 mm (range 0.30–8.00).Conclusion.We propose a new definition for erosions visualized with HR-pQCT imaging. Interreader reliability for erosion detection is good, but further refinement of selection of landmarks for erosion size measurement, or automated volumetric methods, will be pursued.
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Tom S, Frayne M, Manske SL, Burghardt AJ, Stok KS, Boyd SK, Barnabe C. Determining Metacarpophalangeal Flexion Angle Tolerance for Reliable Volumetric Joint Space Measurements by High-resolution Peripheral Quantitative Computed Tomography. J Rheumatol 2016; 43:1941-1944. [DOI: 10.3899/jrheum.160649] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Objective.The position-dependence of a method to measure the joint space of metacarpophalangeal (MCP) joints using high-resolution peripheral quantitative computed tomography (HR-pQCT) was studied.Methods.Cadaveric MCP were imaged at 7 flexion angles between 0 and 30 degrees. The variability in reproducibility for mean, minimum, and maximum joint space widths and volume measurements was calculated for increasing degrees of flexion.Results.Root mean square coefficient of variance values were < 5% under 20 degrees of flexion for mean, maximum, and volumetric joint spaces. Values for minimum joint space width were optimized under 10 degrees of flexion.Conclusion.MCP joint space measurements should be acquired at < 10 degrees of flexion in longitudinal studies.
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Lakin BA, Patel H, Holland C, Freedman JD, Shelofsky JS, Snyder BD, Stok KS, Grinstaff MW. Contrast-enhanced CT using a cationic contrast agent enables non-destructive assessment of the biochemical and biomechanical properties of mouse tibial plateau cartilage. J Orthop Res 2016; 34:1130-8. [PMID: 26697956 PMCID: PMC5556386 DOI: 10.1002/jor.23141] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Accepted: 12/21/2015] [Indexed: 02/04/2023]
Abstract
Mouse models of osteoarthritis (OA) are commonly used to study the disease's pathogenesis and efficacy of potential treatments. However, measuring the biochemical and mechanical properties of articular cartilage in these models currently requires destructive and time-consuming histology and mechanical testing. Therefore, we examined the feasibility of using contrast-enhanced CT (CECT) to rapidly and non-destructively image and assess the glycosaminoglycan (GAG) content. Using three ex vivo C57BL/6 mouse tibial plateaus, we determined the time required for the cationic contrast agent CA4+ to equilibrate in the cartilage. The whole-joint coefficient of friction (μ) of 10 mouse knees (some digested with Chondroitenase ABC to introduce variation in GAG) was evaluated using a modified Stanton pendulum. For both the medial and lateral tibial plateau cartilage of these knees, linear regression was used to compare the equilibrium CECT attenuations to μ, as well as each side's indentation equilibrium modulus (E) and Safranin-O determined GAG content. CA4+ equilibrated in the cartilage in 30.9 ± 0.95 min (mean ± SD, tau value of 6.17 ± 0.19 min). The mean medial and lateral CECT attenuation was correlated with μ (R(2) = 0.69, p < 0.05), and the individual medial and lateral CECT attenuations correlated with their respective GAG contents (R(2) ≥ 0.63, p < 0.05) and E (R(2) ≥ 0.63, p < 0.05). In conclusion, CECT using CA4+ is a simple, non-destructive technique for three-dimensional imaging of ex vivo mouse cartilage, and significant correlations between CECT attenuation and GAG, E, and μ are observed. © 2015 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 34:1130-1138, 2016.
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Affiliation(s)
- Benjamin A. Lakin
- Center for Advanced Orthopaedic Studies, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA,Department of Biomedical Engineering, Boston University, Boston, MA
| | - Harsh Patel
- Center for Advanced Orthopaedic Studies, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA,Department of Biomedical Engineering, Boston University, Boston, MA
| | - Conor Holland
- Department of Biomedical Engineering, Boston University, Boston, MA
| | - Jonathan D. Freedman
- Center for Advanced Orthopaedic Studies, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA,Department of Pharmacology and Experimental Therapeutics, Boston University, Boston, MA
| | - Joshua S. Shelofsky
- Center for Advanced Orthopaedic Studies, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA,Department of Biomedical Engineering, Boston University, Boston, MA
| | - Brian D. Snyder
- Center for Advanced Orthopaedic Studies, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA,Department of Orthopaedic Surgery, Children’s Hospital, Boston, MA,Address correspondence and reprint requests to: Mark W. Grinstaff, Ph.D., Departments of Biomedical Engineering and Chemistry, Boston University, 590 Commonwealth Ave, Boston MA 02215, OR Brian D. Snyder, M.D., PhD., Center for Advanced Orthopedic Studies, Beth Israel Deaconess Medical Center, 1 Overland Street, RN 115, Boston MA 02215, OR Kathryn S. Stok, Ph.D., Institute for Biomechanics, ETH Zurich, Leopold-Ruzicka-Weg 4, Zurich, 8093, Switzerland,
| | - Kathryn S. Stok
- Institute for Biomechanics, ETH Zürich, Zürich, Switzerland,Scanco Medical AG, Brüttisellen, Switzerland,Address correspondence and reprint requests to: Mark W. Grinstaff, Ph.D., Departments of Biomedical Engineering and Chemistry, Boston University, 590 Commonwealth Ave, Boston MA 02215, OR Brian D. Snyder, M.D., PhD., Center for Advanced Orthopedic Studies, Beth Israel Deaconess Medical Center, 1 Overland Street, RN 115, Boston MA 02215, OR Kathryn S. Stok, Ph.D., Institute for Biomechanics, ETH Zurich, Leopold-Ruzicka-Weg 4, Zurich, 8093, Switzerland,
| | - Mark W. Grinstaff
- Department of Biomedical Engineering, Boston University, Boston, MA,Department of Chemistry, Boston University, Boston, MA,Address correspondence and reprint requests to: Mark W. Grinstaff, Ph.D., Departments of Biomedical Engineering and Chemistry, Boston University, 590 Commonwealth Ave, Boston MA 02215, OR Brian D. Snyder, M.D., PhD., Center for Advanced Orthopedic Studies, Beth Israel Deaconess Medical Center, 1 Overland Street, RN 115, Boston MA 02215, OR Kathryn S. Stok, Ph.D., Institute for Biomechanics, ETH Zurich, Leopold-Ruzicka-Weg 4, Zurich, 8093, Switzerland,
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Abstract
Thirty-two poly(ε)caprolactone (PCL) scaffolds have been produced by electrospinning directly into an auricle-shaped mould and seeded with articular chondrocytes harvested from bovine ankle joints. After seeding, the auricle shaped constructs were cultured in vitro and analysed at days 1, 7, 14 and 21 for regional differences in total DNA, glycosaminoglycan (GAG) and collagen (COL) content as well as the expression of aggrecan (AGG), collagen type I and type II (COL1/2) and matrix metalloproteinase 3 and 13 (MMP3/13). Stress-relaxation indentation testing was performed to investigate regional mechanical properties of the electrospun constructs. Electrospinning into a conductive mould yielded stable 3D constructs both initially and for the whole in vitro culture period, with an equilibrium modulus in the MPa range. Rapid cell proliferation and COL accumulation was observed until week 3. Quantitative real time PCR analysis showed an initial increase in AGG, no change in COL2, a persistent increase in COL1, and only a slight decrease initially for MMP3. Electrospinning of fibrous scaffolds directly into an auricle-shape represents a promising option for auricular tissue engineering, as it can reduce the steps needed to achieve an implantable structure.
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Affiliation(s)
- Jochen Walser
- ETH Zurich, Institute for Biomechanics, Zurich, CH, Switzerland
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Stok KS, Besler BA, Steiner TH, Villarreal Escudero AV, Zulliger MA, Wilke M, Atal K, Quintin A, Koller B, Müller R, Nesic D. Three-Dimensional Quantitative Morphometric Analysis (QMA) for In Situ Joint and Tissue Assessment of Osteoarthritis in a Preclinical Rabbit Disease Model. PLoS One 2016; 11:e0147564. [PMID: 26808542 PMCID: PMC4726512 DOI: 10.1371/journal.pone.0147564] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2015] [Accepted: 01/05/2016] [Indexed: 11/23/2022] Open
Abstract
This work utilises advances in multi-tissue imaging, and incorporates new metrics which define in situ joint changes and individual tissue changes in osteoarthritis (OA). The aims are to (1) demonstrate a protocol for processing intact animal joints for microCT to visualise relevant joint, bone and cartilage structures for understanding OA in a preclinical rabbit model, and (2) introduce a comprehensive three-dimensional (3D) quantitative morphometric analysis (QMA), including an assessment of reproducibility. Sixteen rabbit joints with and without transection of the anterior cruciate ligament were scanned with microCT and contrast agents, and processed for histology. Semi-quantitative evaluation was performed on matching two-dimensional (2D) histology and microCT images. Subsequently, 3D QMA was performed; including measures of cartilage, subchondral cortical and epiphyseal bone, and novel tibio-femoral joint metrics. Reproducibility of the QMA was tested on seven additional joints. A significant correlation was observed in cartilage thickness from matching histology-microCT pairs. The lateral compartment of operated joints had larger joint space width, thicker femoral cartilage and reduced bone volume, while osteophytes could be detected quantitatively. Measures between the in situ tibia and femur indicated an altered loading scenario. High measurement reproducibility was observed for all new parameters; with ICC ranging from 0.754 to 0.998. In conclusion, this study provides a novel 3D QMA to quantify macro and micro tissue measures in the joint of a rabbit OA model. New metrics were established consisting of: an angle to quantitatively measure osteophytes (σ), an angle to indicate erosion between the lateral and medial femoral condyles (ρ), a vector defining altered angulation (λ, α, β, γ) and a twist angle (τ) measuring instability and tissue degeneration between the femur and tibia, a length measure of joint space width (JSW), and a slope and intercept (m, Χ) of joint contact to demonstrate altered loading with disease progression, as well as traditional bone and cartilage and histo-morphometry measures. We demonstrate correlation of microCT and histology, sensitive discrimination of OA change and robust reproducibility.
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Affiliation(s)
- Kathryn S. Stok
- Institute for Biomechanics, ETH Zurich, Zurich, Switzerland
- SCANCO Medical AG, Bruttisellen, Switzerland
- * E-mail:
| | | | | | | | | | - Markus Wilke
- Department of Clinical Research, University of Bern, Bern, Switzerland
| | - Kailash Atal
- Institute for Biomechanics, ETH Zurich, Zurich, Switzerland
| | - Aurelie Quintin
- Department of Clinical Research, University of Bern, Bern, Switzerland
| | | | - Ralph Müller
- Institute for Biomechanics, ETH Zurich, Zurich, Switzerland
| | - Dobrila Nesic
- Department of Clinical Research, University of Bern, Bern, Switzerland
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Besler BA, Sondergaard RE, Müller R, Stok KS. Reproducibility of compartmental subchondral bone morphometry in the mouse tibiofemoral joint. Bone 2015; 81:649-653. [PMID: 26424216 DOI: 10.1016/j.bone.2015.09.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2015] [Revised: 08/21/2015] [Accepted: 09/25/2015] [Indexed: 10/23/2022]
Abstract
AIM Evidence suggests that subchondral bone can be used as a predictor for the onset of osteoarthritis. As such, there is a need to accurately and reproducibly quantify subchondral bone in areas where osteoarthritis develops. In this paper, we present a novel technique for the segmentation of subchondral bone in the tibiofemoral joint and assess the reproducibility of this method with multiple measures and users. METHODS The right hind leg of seven C57BL/6 mice were excised and imaged in μCT. The menisci and patella were manually segmented and the image data was Gaussian filtered and binarized. An in-house algorithm was used to generate cortical and epiphyseal volumes of interest and standard morphometric indices for bone were computed. The intraclass correlation coefficient (ICC), absolute precision error (PE(SD)), and precision error as a percentage of the coefficient of variation of the repeated measurements (PE(%CV)) were calculated for each index. Additionally, an inter-user study was performed using the same indices and statistics. RESULTS For repeated measures, ICC ranged from 0.869 (cortical bone volume fraction, femur) to 0.994 (degree of anisotropy, femur). Similarly, PE(%CV) ranged from 0.84% (cortical bone volume fraction, femur) to 5.11% (connectivity density, tibia). For repeated users, no effect was seen in the femur with a slight effect in the tibia. CONCLUSIONS A novel method for the automatic segmentation of cortical and epiphyseal bone is presented and is shown to be reproducible in C57BL/6 mice. This tool will allow for high-throughput studies of osteoarthritis in animal models.
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Affiliation(s)
- Bryce A Besler
- Institute for Biomechanics, ETH Zurich, Zurich, Switzerland.
| | | | - Ralph Müller
- Institute for Biomechanics, ETH Zurich, Zurich, Switzerland.
| | - Kathryn S Stok
- Institute for Biomechanics, ETH Zurich, Zurich, Switzerland; SCANCO Medical AG, Bruttisellen, Switzerland.
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Kogan NM, Melamed E, Wasserman E, Raphael B, Breuer A, Stok KS, Sondergaard R, Escudero AVV, Baraghithy S, Attar-Namdar M, Friedlander-Barenboim S, Mathavan N, Isaksson H, Mechoulam R, Müller R, Bajayo A, Gabet Y, Bab I. Cannabidiol, a Major Non-Psychotropic Cannabis Constituent Enhances Fracture Healing and Stimulates Lysyl Hydroxylase Activity in Osteoblasts. J Bone Miner Res 2015; 30:1905-13. [PMID: 25801536 DOI: 10.1002/jbmr.2513] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2014] [Revised: 02/15/2015] [Accepted: 03/18/2015] [Indexed: 12/16/2022]
Abstract
Cannabinoid ligands regulate bone mass, but skeletal effects of cannabis (marijuana and hashish) have not been reported. Bone fractures are highly prevalent, involving prolonged immobilization and discomfort. Here we report that the major non-psychoactive cannabis constituent, cannabidiol (CBD), enhances the biomechanical properties of healing rat mid-femoral fractures. The maximal load and work-to-failure, but not the stiffness, of femurs from rats given a mixture of CBD and Δ(9) -tetrahydrocannabinol (THC) for 8 weeks were markedly increased by CBD. This effect is not shared by THC (the psychoactive component of cannabis), but THC potentiates the CBD stimulated work-to-failure at 6 weeks postfracture followed by attenuation of the CBD effect at 8 weeks. Using micro-computed tomography (μCT), the fracture callus size was transiently reduced by either CBD or THC 4 weeks after fracture but reached control level after 6 and 8 weeks. The callus material density was unaffected by CBD and/or THC. By contrast, CBD stimulated mRNA expression of Plod1 in primary osteoblast cultures, encoding an enzyme that catalyzes lysine hydroxylation, which is in turn involved in collagen crosslinking and stabilization. Using Fourier transform infrared (FTIR) spectroscopy we confirmed the increase in collagen crosslink ratio by CBD, which is likely to contribute to the improved biomechanical properties of the fracture callus. Taken together, these data show that CBD leads to improvement in fracture healing and demonstrate the critical mechanical role of collagen crosslinking enzymes.
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Affiliation(s)
- Natalya M Kogan
- Bone Laboratory, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Eitan Melamed
- Bone Laboratory, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Elad Wasserman
- Bone Laboratory, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Bitya Raphael
- Bone Laboratory, Hebrew University of Jerusalem, Jerusalem, Israel.,Department of Anatomy and Anthropology, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Aviva Breuer
- Institute for Drug Research, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Kathryn S Stok
- Institute for Biomechanics, ETH Zürich, Zürich, Switzerland
| | | | | | - Saja Baraghithy
- Bone Laboratory, Hebrew University of Jerusalem, Jerusalem, Israel
| | | | | | - Neashan Mathavan
- Department of Biomedical Engineering, Lund University, Lund, Sweden.,Department of Orthopedics, Lund University, Lund, Sweden
| | - Hanna Isaksson
- Department of Biomedical Engineering, Lund University, Lund, Sweden.,Department of Orthopedics, Lund University, Lund, Sweden
| | - Raphael Mechoulam
- Institute for Drug Research, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Ralph Müller
- Institute for Biomechanics, ETH Zürich, Zürich, Switzerland
| | - Alon Bajayo
- Bone Laboratory, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Yankel Gabet
- Department of Anatomy and Anthropology, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Itai Bab
- Bone Laboratory, Hebrew University of Jerusalem, Jerusalem, Israel
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Pawson DJ, Glanzmann M, Luechinger R, Müller R, Stok KS. Quantitative morphometric patterns in cartilage and bone from the humeral heads of end-stage osteoarthritis patients. Osteoarthritis Cartilage 2015; 23:1377-87. [PMID: 25887368 DOI: 10.1016/j.joca.2015.04.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/06/2014] [Revised: 03/14/2015] [Accepted: 04/02/2015] [Indexed: 02/02/2023]
Abstract
OBJECTIVE The purpose of this work is to investigate in a quantitative manner, the gross and regional structural patterns in cartilage and bone from the humeral head of end-stage OA patients, with the goal of identifying patterns of disease. Since the prevalence of primary OA of the shoulder is increasing as the population ages and the non-traumatic degenerative changes leading to this disease are poorly understood, a site-specific morphometric analysis speaks to the structure-function remodelling relationship of the pathological anatomy. METHODS Humeral heads were harvested from twenty-one patients undergoing shoulder arthroplasty for end-stage primary OA. The samples were scanned with micro-computed tomography and magnetic resonance imaging (MRI), and registered to provide reconstructed 3D datasets of the cartilage, cortical and trabecular bone tissues. Gross visual examination of the datasets allowed samples to be classified as OA-like, osteoporosis (OP)-like or OA/OP-like. RESULTS Volumes of interest (VOI) separating the OA-like samples into five distinct regions showed positive correlations between bone and cartilage morphometric parameters; specifically in areas where more cartilage has been lost, the underlying subchondral cortical bone was more porous and thicker, while the subchondral trabecular bone was more dense, including more connections and trabeculae. These differences were site-specific, where the central humeral head saw the greatest destruction of cartilage and bone sclerosis, followed by the anterior aspects. CONCLUSION The ability to correlate bone and cartilage changes is valuable, as these structural cues may allow a more targeted diagnostic approach and a better classification of the disease, leading to improved therapies.
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Affiliation(s)
- D J Pawson
- Institute for Biomechanics, ETH Zurich, Zurich, Switzerland.
| | | | - R Luechinger
- Institute for Biomedical Engineering, University and ETH Zurich, Zurich, Switzerland.
| | - R Müller
- Institute for Biomechanics, ETH Zurich, Zurich, Switzerland.
| | - K S Stok
- Institute for Biomechanics, ETH Zurich, Zurich, Switzerland.
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Nimeskern L, Pleumeekers MM, Pawson DJ, Koevoet WLM, Lehtoviita I, Soyka MB, Röösli C, Holzmann D, van Osch GJVM, Müller R, Stok KS. Mechanical and biochemical mapping of human auricular cartilage for reliable assessment of tissue-engineered constructs. J Biomech 2015; 48:1721-9. [PMID: 26065333 DOI: 10.1016/j.jbiomech.2015.05.019] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2015] [Revised: 05/07/2015] [Accepted: 05/14/2015] [Indexed: 11/28/2022]
Abstract
It is key for successful auricular (AUR) cartilage tissue-engineering (TE) to ensure that the engineered cartilage mimics the mechanics of the native tissue. This study provides a spatial map of the mechanical and biochemical properties of human auricular cartilage, thus establishing a benchmark for the evaluation of functional competency in AUR cartilage TE. Stress-relaxation indentation (instantaneous modulus, Ein; maximum stress, σmax; equilibrium modulus, Eeq; relaxation half-life time, t1/2; thickness, h) and biochemical parameters (content of DNA; sulfated-glycosaminoglycan, sGAG; hydroxyproline, HYP; elastin, ELN) of fresh human AUR cartilage were evaluated. Samples were categorized into age groups and according to their harvesting region in the human auricle (for AUR cartilage only). AUR cartilage displayed significantly lower Ein, σmax, Eeq, sGAG content; and significantly higher t1/2, and DNA content than NAS cartilage. Large amounts of ELN were measured in AUR cartilage (>15% ELN content per sample wet mass). No effect of gender was observed for either auricular or nasoseptal samples. For auricular samples, significant differences between age groups for h, sGAG and HYP, and significant regional variations for Ein, σmax, Eeq, t1/2, h, DNA and sGAG were measured. However, only low correlations between mechanical and biochemical parameters were seen (R<0.44). In conclusion, this study established the first comprehensive mechanical and biochemical map of human auricular cartilage. Regional variations in mechanical and biochemical properties were demonstrated in the auricle. This finding highlights the importance of focusing future research on efforts to produce cartilage grafts with spatially tunable mechanics.
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Affiliation(s)
- Luc Nimeskern
- Institute for Biomechanics, ETH Zürich, Zürich, Switzerland
| | - Mieke M Pleumeekers
- Department of Otorhinolaryngology, Head and Neck Surgery, Erasmus MC, University Medical Center, Rotterdam, The Netherlands
| | | | - Wendy L M Koevoet
- Department of Otorhinolaryngology, Head and Neck Surgery, Erasmus MC, University Medical Center, Rotterdam, The Netherlands
| | | | - Michael B Soyka
- Department of Otorhinolaryngology and Head and Neck Surgery, University Hospital Zürich, Zürich, Switzerland
| | - Christof Röösli
- Department of Otorhinolaryngology and Head and Neck Surgery, University Hospital Zürich, Zürich, Switzerland
| | - David Holzmann
- Department of Otorhinolaryngology and Head and Neck Surgery, University Hospital Zürich, Zürich, Switzerland
| | - Gerjo J V M van Osch
- Department of Otorhinolaryngology, Head and Neck Surgery, Erasmus MC, University Medical Center, Rotterdam, The Netherlands; Department of Orthopaedics, Erasmus MC, University Medical Center, Rotterdam, The Netherlands
| | - Ralph Müller
- Institute for Biomechanics, ETH Zürich, Zürich, Switzerland
| | - Kathryn S Stok
- Institute for Biomechanics, ETH Zürich, Zürich, Switzerland.
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Nimeskern L, Rotter N, van Osch GJ, Müller R, Stok KS. Response to Letter to the Editor Concerning “Quantitative Evaluation of Mechanical Properties in Tissue-Engineered Auricular Cartilage”. Tissue Engineering Part B: Reviews 2015; 21:244-5. [DOI: 10.1089/ten.teb.2014.0517] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Luc Nimeskern
- Institute for Biomechanics, ETH Zürich, Zürich, Switzerland
| | - Nicole Rotter
- Department of Otorhinolaryngology, Ulm University Medical Center, Ulm, Germany
| | - Gerjo J.V.M. van Osch
- Department of Otorhinolaryngology, University Medical Center Rotterdam, Rotterdam, The Netherlands
- Department of Orthopaedics, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Ralph Müller
- Institute for Biomechanics, ETH Zürich, Zürich, Switzerland
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Martínez Ávila H, Feldmann EM, Pleumeekers MM, Nimeskern L, Kuo W, de Jong WC, Schwarz S, Müller R, Hendriks J, Rotter N, van Osch GJ, Stok KS, Gatenholm P. Novel bilayer bacterial nanocellulose scaffold supports neocartilage formation in vitro and in vivo. Biomaterials 2015; 44:122-33. [DOI: 10.1016/j.biomaterials.2014.12.025] [Citation(s) in RCA: 91] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2014] [Revised: 12/01/2014] [Accepted: 12/20/2014] [Indexed: 10/24/2022]
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Utomo L, Pleumeekers MM, Nimeskern L, Nürnberger S, Stok KS, Hildner F, van Osch GJVM. Preparation and characterization of a decellularized cartilage scaffold for ear cartilage reconstruction. ACTA ACUST UNITED AC 2015; 10:015010. [PMID: 25586138 DOI: 10.1088/1748-6041/10/1/015010] [Citation(s) in RCA: 65] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Scaffolds are widely used to reconstruct cartilage. Yet, the fabrication of a scaffold with a highly organized microenvironment that closely resembles native cartilage remains a major challenge. Scaffolds derived from acellular extracellular matrices are able to provide such a microenvironment. Currently, no report specifically on decellularization of full thickness ear cartilage has been published. In this study, decellularized ear cartilage scaffolds were prepared and extensively characterized. Cartilage decellularization was optimized to remove cells and cell remnants from elastic cartilage. Following removal of nuclear material, the obtained scaffolds retained their native collagen and elastin contents as well as their architecture and shape. High magnification scanning electron microscopy showed no obvious difference in matrix density after decellularization. However, glycosaminoglycan content was significantly reduced, resulting in a loss of viscoelastic properties. Additionally, in contact with the scaffolds, human bone-marrow-derived mesenchymal stem cells remained viable and are able to differentiate toward the chondrogenic lineage when cultured in vitro. These results, including the ability to decellularize whole human ears, highlight the clinical potential of decellularization as an improved cartilage reconstruction strategy.
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Affiliation(s)
- Lizette Utomo
- Department of Otorhinolaryngology, Erasmus MC, University Medical Center Rotterdam, Wytemaweg 80, 3015 CN, Rotterdam, The Netherlands. Department of Orthopaedics, Erasmus MC, University Medical Center Rotterdam, Wytemaweg 80, 3015 CN, Rotterdam, The Netherlands. Faculty of Science and Technology, University of Twente, PO Box 217, 7500 AE Enschede, The Netherlands
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Pleumeekers MM, Nimeskern L, Koevoet WLM, Kops N, Poublon RML, Stok KS, van Osch GJVM, van Osch GJVM. The in vitro and in vivo capacity of culture-expanded human cells from several sources encapsulated in alginate to form cartilage. Eur Cell Mater 2014; 27:264-80; discussion 278-80. [PMID: 24706178 DOI: 10.22203/ecm.v027a19] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
Cartilage has limited self-regenerative capacity. Tissue engineering can offer promising solutions for reconstruction of missing or damaged cartilage. A major challenge herein is to define an appropriate cell source that is capable of generating a stable and functional matrix. This study evaluated the performance of culture-expanded human chondrocytes from ear (EC), nose (NC) and articular joint (AC), as well as bone-marrow-derived and adipose-tissue-derived mesenchymal stem cells both in vitro and in vivo. All cells (≥ 3 donors per source) were culture-expanded, encapsulated in alginate and cultured for 5 weeks. Subsequently, constructs were implanted subcutaneously for 8 additional weeks. Before and after implantation, glycosaminoglycan (GAG) and collagen content were measured using biochemical assays. Mechanical properties were determined using stress-strain-indentation tests. Hypertrophic differentiation was evaluated with qRT-PCR and subsequent endochondral ossification with histology. ACs had higher chondrogenic potential in vitro than the other cell sources, as assessed by gene expression and GAG content (p < 0.001). However, after implantation, ACs did not further increase their matrix. In contrast, ECs and NCs continued producing matrix in vivo leading to higher GAG content (p < 0.001) and elastic modulus. For NC-constructs, matrix-deposition was associated with the elastic modulus (R² = 0.477, p = 0.039). Although all cells--except ACs--expressed markers for hypertrophic differentiation in vitro, there was no bone formed in vivo. Our work shows that cartilage formation and functionality depends on the cell source used. ACs possess the highest chondrogenic capacity in vitro, while ECs and NCs are most potent in vivo, making them attractive cell sources for cartilage repair.
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Affiliation(s)
- M M Pleumeekers
- Erasmus MC, University Medical Center Rotterdam, Dr. Molewaterplein 50-60, Room Ee 16.55, 3015 GE Rotterdam, The
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Nimeskern L, van Osch GJ, Müller R, Stok KS. Quantitative Evaluation of Mechanical Properties in Tissue-Engineered Auricular Cartilage. Tissue Engineering Part B: Reviews 2014; 20:17-27. [DOI: 10.1089/ten.teb.2013.0117] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Luc Nimeskern
- Institute for Biomechanics, ETH Zurich, Zurich, Switzerland
| | - Gerjo J.V.M. van Osch
- Departments of Otorhinolaryngology and Orthopaedics, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Ralph Müller
- Institute for Biomechanics, ETH Zurich, Zurich, Switzerland
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Rikhtegar F, Wyss C, Stok KS, Poulikakos D, Müller R, Kurtcuoglu V. Hemodynamics in coronary arteries with overlapping stents. J Biomech 2014; 47:505-11. [DOI: 10.1016/j.jbiomech.2013.10.048] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2013] [Revised: 09/17/2013] [Accepted: 10/26/2013] [Indexed: 01/20/2023]
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Loessner D, Rizzi SC, Stok KS, Magdolen V, Hutmacher DW, Clements JA. Abstract A73: A bioengineered ovarian cancer microenvironment to assess protease-associated functions. Clin Cancer Res 2013. [DOI: 10.1158/1078-0432.ovca13-a73] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Cancer-associated proteases promote peritoneal dissemination and chemoresistance in malignant progression. In this study, kallikrein-related peptidases 4, 5, 6, and 7 (KLK4-7)-cotransfected ovarian cancer cells were embedded in a bioengineered three-dimensional (3D) microenvironment that contains RGD motifs for integrin engagement to analyse their spheroid growth and survival after chemotreatment. KLK4-7-cotransfected cells formed larger spheroids and proliferated more than controls in 3D, particularly within RGD-functionalized matrices, which was reduced upon integrin inhibition. In contrast, KLK4-7-expressing cell monolayers proliferated less than controls, emphasising the relevance of the 3D microenvironment and integrin engagement. In a spheroid-based animal model, KLK4-7-overexpression induced tumor growth after 4 weeks and intraperitoneal spread after 8 weeks. Upon paclitaxel administration, KLK4-7-expressing tumors declined in size and showed less metastatic outgrowth. KLK4-7-expressing spheroids showed 53% survival upon paclitaxel treatment, accompanied by enhanced chemoresistance-related factors; their survival was further reduced by combination treatment of paclitaxel with KLK (22%) or MAPK (6%) inhibition. The concomitant presence of KLK4-7 in ovarian cancer cells together with integrin activation drives spheroid formation and proliferation. Combinatorial approaches of paclitaxel and KLK/MAPK inhibition may be more efficient for late-stage disease than chemotherapeutics alone as these inhibitory regimens reduced cancer spheroid growth to a greater extent than paclitaxel alone.
Citation Format: Daniela Loessner, Simone C. Rizzi, Kathryn S. Stok, Viktor Magdolen, Dietmar W. Hutmacher, Judith A. Clements. A bioengineered ovarian cancer microenvironment to assess protease-associated functions. [abstract]. In: Proceedings of the AACR Special Conference on Advances in Ovarian Cancer Research: From Concept to Clinic; Sep 18-21, 2013; Miami, FL. Philadelphia (PA): AACR; Clin Cancer Res 2013;19(19 Suppl):Abstract nr A73.
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Affiliation(s)
- Daniela Loessner
- 1Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Australia,
| | - Simone C. Rizzi
- 2QGel SA, Innovation Square, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland,
| | - Kathryn S. Stok
- 3Institute for Biomechanics, Swiss Federal Institute of Technology, ETH Zürich, Zürich, Switzerland,
| | - Viktor Magdolen
- 4Clinical Research Unit, Department of Obstetrics and Gynecology, Technical University of Munich, Munich, Germany
| | - Dietmar W. Hutmacher
- 1Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Australia,
| | - Judith A. Clements
- 1Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Australia,
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Choo RJ, Firminger C, Müller R, Stok KS. Prevention of cartilage dehydration in imaging studies with a customized humidity chamber. Rev Sci Instrum 2013; 84:093703. [PMID: 24089832 DOI: 10.1063/1.4820913] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Quantitative three-dimensional imaging methods such as micro-computed tomography (μCT) allow for the rapid and comprehensive evaluation of cartilage and bone in animal models, which can be used for drug development and related research in arthritis. However, when imaging fresh cartilage tissue in air, a common problem is tissue dehydration which causes movement artifact in the resulting images. These artifacts distort scans and can render them unusable, leading to a considerable loss of time and effort with sample preparation and measurement. The sample itself is also irretrievably damaged by the dehydration, often unable to return to its full tissue thickness upon rehydration. Additionally, imaging with ionic contrast agents such as Hexabrix(TM) must be performed in air, otherwise the agent will be washed out if immersed in a liquid. The first goal of this study was to design a customized humidity chamber to maintain cartilage hydration without the need for immersion. Following this, the use of the humidity chamber during a synchrotron radiation-μCT scan was validated and its performance evaluated. Results showed that the loss of fluid film volume is associated with scanning at low humidity (87%), and can be avoided using the humidity chamber. Coupling this technology with advances in synchrotron imaging (e.g., phase contrast imaging) or contrast agents is promising.
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Affiliation(s)
- Ryan J Choo
- Institute for Biomechanics, ETH Zurich, Zurich 8093, Switzerland
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47
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Loessner D, Rizzi SC, Stok KS, Fuehrmann T, Hollier B, Magdolen V, Hutmacher DW, Clements JA. A bioengineered 3D ovarian cancer model for the assessment of peptidase-mediated enhancement of spheroid growth and intraperitoneal spread. Biomaterials 2013; 34:7389-400. [PMID: 23827191 DOI: 10.1016/j.biomaterials.2013.06.009] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2013] [Accepted: 06/07/2013] [Indexed: 12/19/2022]
Abstract
Cancer-associated proteases promote peritoneal dissemination and chemoresistance in malignant progression. In this study, kallikrein-related peptidases 4, 5, 6, and 7 (KLK4-7)-cotransfected OV-MZ-6 ovarian cancer cells were embedded in a bioengineered three-dimensional (3D) microenvironment that contains RGD motifs for integrin engagement to analyze their spheroid growth and survival after chemotreatment. KLK4-7-cotransfected cells formed larger spheroids and proliferated more than controls in 3D, particularly within RGD-functionalized matrices, which was reduced upon integrin inhibition. In contrast, KLK4-7-expressing cell monolayers proliferated less than controls, emphasizing the relevance of the 3D microenvironment and integrin engagement. In a spheroid-based animal model, KLK4-7-overexpression induced tumor growth after 4 weeks and intraperitoneal spread after 8 weeks. Upon paclitaxel administration, KLK4-7-expressing tumors declined in size by 91% (controls: 87%) and showed 90% less metastatic outgrowth (controls: 33%, P < 0.001). KLK4-7-expressing spheroids showed 53% survival upon paclitaxel treatment (controls: 51%), accompanied by enhanced chemoresistance-related factors, and their survival was further reduced by combination treatment of paclitaxel with KLK4/5/7 (22%, P = 0.007) or MAPK (6%, P = 0.006) inhibition. The concomitant presence of KLK4-7 in ovarian cancer cells together with integrin activation drives spheroid formation and proliferation. Combinatorial approaches of paclitaxel and KLK/MAPK inhibition may be more efficient for late-stage disease than chemotherapeutics alone as these inhibitory regimens reduced cancer spheroid growth to a greater extent than paclitaxel alone.
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Affiliation(s)
- Daniela Loessner
- Faculty of Health, Institute of Health and Biomedical Innovation, Queensland University of Technology, Kelvin Grove, Brisbane, Queensland 4059, Australia.
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Rikhtegar F, Pacheco F, Wyss C, Stok KS, Ge H, Choo RJ, Ferrari A, Poulikakos D, Müller R, Kurtcuoglu V. Compound ex vivo and in silico method for hemodynamic analysis of stented arteries. PLoS One 2013; 8:e58147. [PMID: 23516442 PMCID: PMC3596389 DOI: 10.1371/journal.pone.0058147] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2012] [Accepted: 01/30/2013] [Indexed: 11/18/2022] Open
Abstract
Hemodynamic factors such as low wall shear stress have been shown to influence endothelial healing and atherogenesis in stent-free vessels. However, in stented vessels, a reliable quantitative analysis of such relations has not been possible due to the lack of a suitable method for the accurate acquisition of blood flow. The objective of this work was to develop a method for the precise reconstruction of hemodynamics and quantification of wall shear stress in stented vessels. We have developed such a method that can be applied to vessels stented in or ex vivo and processed ex vivo. Here we stented the coronary arteries of ex vivo porcine hearts, performed vascular corrosion casting, acquired the vessel geometry using micro-computed tomography and reconstructed blood flow and shear stress using computational fluid dynamics. The method yields accurate local flow information through anatomic fidelity, capturing in detail the stent geometry, arterial tissue prolapse, radial and axial arterial deformation as well as strut malapposition. This novel compound method may serve as a unique tool for spatially resolved analysis of the relationship between hemodynamic factors and vascular biology. It can further be employed to optimize stent design and stenting strategies.
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Affiliation(s)
- Farhad Rikhtegar
- Laboratory of Thermodynamics in Emerging Technologies, Department of Mechanical and Process Engineering, ETH Zurich, Zurich, Switzerland
| | - Fernando Pacheco
- Department of Bioengineering, Imperial College, London, United Kingdom
| | - Christophe Wyss
- Clinic of Cardiology, University Hospital Zurich, Zurich, Switzerland
| | - Kathryn S. Stok
- Institute for Biomechanics, Department Health Sciences and Technology, ETH Zurich, Zurich, Switzerland
| | - Heng Ge
- Clinic of Cardiology, University Hospital Zurich, Zurich, Switzerland
| | - Ryan J. Choo
- Institute for Biomechanics, Department Health Sciences and Technology, ETH Zurich, Zurich, Switzerland
| | - Aldo Ferrari
- Laboratory of Thermodynamics in Emerging Technologies, Department of Mechanical and Process Engineering, ETH Zurich, Zurich, Switzerland
| | - Dimos Poulikakos
- Laboratory of Thermodynamics in Emerging Technologies, Department of Mechanical and Process Engineering, ETH Zurich, Zurich, Switzerland
| | - Ralph Müller
- Institute for Biomechanics, Department Health Sciences and Technology, ETH Zurich, Zurich, Switzerland
| | - Vartan Kurtcuoglu
- Laboratory of Thermodynamics in Emerging Technologies, Department of Mechanical and Process Engineering, ETH Zurich, Zurich, Switzerland
- The Interface Group, Institute of Physiology, University of Zurich, Zurich, Switzerland
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Steiner TH, Choo RJ, Quintin A, Nesic D, Zulliger MA, Müller R, Stok KS. WHOLE JOINT STRUCTURE IN A RAT OSTEOARTHRITIS MODEL FOR SAMPLE-SPECIFIC MECHANICAL EVALUATION. J Biomech 2012. [DOI: 10.1016/s0021-9290(12)70161-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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50
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Nimeskern L, Pleumeekers M, Martinez H, Sundberg J, Gatenholm P, van Osch G, Müller R, Stok KS. MECHANICAL AND BIOCHEMICAL MAP OF EAR CARTILAGE FOR TUNABLE BIOMATERIALS IN TISSUE ENGINEERING. J Biomech 2012. [DOI: 10.1016/s0021-9290(12)70652-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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