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Rougereau G, Villard A, Langlais T, Delord M, Boisrenoult P, Pujol N. Femoral condyle bone mineral density in osteoarthritis differs significantly between knees with valgus vs. varus deformity. Orthop Traumatol Surg Res 2023; 109:103584. [PMID: 36889579 DOI: 10.1016/j.otsr.2023.103584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 04/28/2022] [Accepted: 06/24/2022] [Indexed: 03/08/2023]
Abstract
BACKGROUND The objective of this study was to measure bone mineral density (BMD) of the cancellous bone in both femoral condyles and to compare the results according to the hip-knee-ankle (HKA) angle in patients with knee osteoarthritis. HYPOTHESIS BMD of cancellous bone in the medial condyle is markedly lower in valgus knees compared to that in the lateral condyle in varus knees. METHODS Consecutive patients with computed tomography (CT) of the knee and long-leg radiographs obtained in preparation for total knee arthroplasty were included. The 189 knees were divided into five groups based on whether the hip-knee-ankle angle was<170° (major varus deformity), 171°-177° (varus deformity), 178°-182° (normal alignment), 183°-189° (valgus deformity), and>190° (major valgus deformity). A protocol for CT measurement of BMD values at the femoral condyles was developed. Correlations between the HKA angle and BMD were assessed using the ratio of medial-to-lateral condyle BMD values (M/L). RESULTS M/L was lower for knees with valgus deformity than for normally aligned knees (0.7 vs. 1, p<0.001). This difference was larger in the group with major valgus deformity, with a mean M/L value of 0.5 (p<0.001). M/L was higher for knees with major varus (mean, 1.2; p=0.035). The correlation coefficients showed excellent intra-observer and inter-observer agreement for the BMD measurements. CONCLUSION The BMD values of the femoral condyles correlate with the HKA angle. BMD is lower at the medial femoral condyle of valgus knees, particularly when the deformity exceeds 10°. This finding may deserve consideration when planning total knee arthroplasty. LEVEL OF EVIDENCE IV; retrospective study.
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Affiliation(s)
- Grégoire Rougereau
- Service de chirurgie orthopédique, centre hospitalier de Versailles, Le Chesnay, France.
| | - Alexandra Villard
- Service de chirurgie orthopédique, centre hospitalier de Versailles, Le Chesnay, France
| | - Tristan Langlais
- Service de chirurgie orthopédique pédiatrique, hôpital des enfants, Purpan, université de Toulouse, Toulouse, France
| | - Marc Delord
- Département de recherche clinique, centre hospitalier de Versailles, université Île-de-France Ouest, 177, rue de Versailles, 78150 Le Chesnay, France
| | - Philippe Boisrenoult
- Service de chirurgie orthopédique, centre hospitalier de Versailles, Le Chesnay, France
| | - Nicolas Pujol
- Service de chirurgie orthopédique, centre hospitalier de Versailles, Le Chesnay, France
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2
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Sun Q, Zhang Y, Ding Y, Xie W, Li H, Li S, Li Y, Cai M. Inhibition of PGE2 in Subchondral Bone Attenuates Osteoarthritis. Cells 2022; 11:cells11172760. [PMID: 36078169 PMCID: PMC9454853 DOI: 10.3390/cells11172760] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 08/26/2022] [Accepted: 08/30/2022] [Indexed: 11/17/2022] Open
Abstract
Aberrant subchondral bone architecture is a crucial driver of the pathological progression of osteoarthritis, coupled with increased sensory innervation. The sensory PGE2/EP4 pathway is involved in the regulation of bone mass accrual by the induction of differentiation of mesenchymal stromal cells. This study aimed to clarify whether the sensory PGE2/EP4 pathway induces aberrant structural alteration of subchondral bone in osteoarthritis. Destabilization of the medial meniscus (DMM) using a mouse model was combined with three approaches: the treatment of celecoxib, capsaicin, and sensory nerve-specific prostaglandin E2 receptor 4 (EP4)-knockout mice. Cartilage degeneration, subchondral bone architecture, PGE2 levels, distribution of sensory nerves, the number of osteoprogenitors, and pain-related behavior in DMM mice were assessed. Serum and tissue PGE2 levels and subchondral bone architecture in a human sample were measured. Increased PGE2 is closely related to subchondral bone’s abnormal microstructure in humans and mice. Elevated PGE2 concentration in subchondral bone that is mainly derived from osteoblasts occurs in early-stage osteoarthritis, preceding articular cartilage degeneration in mice. The decreased PGE2 levels by the celecoxib or sensory denervation by capsaicin attenuate the aberrant alteration of subchondral bone architecture, joint degeneration, and pain. Selective EP4 receptor knockout of the sensory nerve attenuates the aberrant formation of subchondral bone and facilitates the prevention of cartilage degeneration in DMM mice. Excessive PGE2 in subchondral bone caused a pathological alteration to subchondral bone in osteoarthritis and maintaining the physiological level of PGE2 could potentially be used as an osteoarthritis treatment.
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Affiliation(s)
- Qi Sun
- Department of Orthopaedics, Shanghai Tenth People’s Hospital, School of Medicine, Tongji University, Shanghai 200072, China
| | - Yuanzhen Zhang
- Department of Orthopaedics, Shanghai Tenth People’s Hospital, School of Medicine, Tongji University, Shanghai 200072, China
| | - Yilan Ding
- Department of Orthopedics, Xiangya Hospital, Central South University, Changsha 410008, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Wenqing Xie
- Department of Orthopedics, Xiangya Hospital, Central South University, Changsha 410008, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Hengzhen Li
- Department of Orthopedics, Xiangya Hospital, Central South University, Changsha 410008, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Shaohua Li
- Department of Orthopaedics, Shanghai Tenth People’s Hospital, School of Medicine, Tongji University, Shanghai 200072, China
| | - Yusheng Li
- Department of Orthopedics, Xiangya Hospital, Central South University, Changsha 410008, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410008, China
- Correspondence: (Y.L.); (M.C.); Tel.: +86-13975889696 (Y.L.); +86-13816147208 (M.C.); Fax: +86-073184327332 (Y.L.); +86-010-59367999 (M.C.)
| | - Ming Cai
- Department of Orthopaedics, Shanghai Tenth People’s Hospital, School of Medicine, Tongji University, Shanghai 200072, China
- Correspondence: (Y.L.); (M.C.); Tel.: +86-13975889696 (Y.L.); +86-13816147208 (M.C.); Fax: +86-073184327332 (Y.L.); +86-010-59367999 (M.C.)
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3
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Knowles NK, Kusins J, Columbus MP, Athwal GS, Ferreira LM. Experimental DVC validation of heterogeneous micro finite element models applied to subchondral trabecular bone of the humeral head. J Orthop Res 2022; 40:2039-2047. [PMID: 34855264 DOI: 10.1002/jor.25229] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 11/01/2021] [Accepted: 11/20/2021] [Indexed: 02/04/2023]
Abstract
Subchondral trabecular bone (STB) undergoes adaptive changes during osteoarthritic (OA) disease progression. These changes alter both the mineralization patterns and structure of bone and may contribute to variations in the mechanical properties. Similarly, when images are downsampled - as is often performed in micro finite element model (microFEM) generation - the morphological and mineralization patterns may further alter the mechanical properties due to partial volume effects. MicroFEMs accounting for material heterogeneity can account for these tissue variations, but no studies have validated these with robust full-field testing methods. As such, this study compared homogeneous and heterogeneous microFEMs to experimentally loaded trabecular bone cores from the humeral head combined with digital volume correlation (DVC). These microFEMs were used to compare apparent mechanical properties between normal and OA STB. Morphological and mineralization patterns between groups were also compared. There were no significant differences in tissue or bone mineral density between groups. The only significant differences in morphometric parameters were in trabecular thickness between groups. There were no significant differences in linear regression parameters between normal and OA STB apparent mechanical properties estimated using heterogeneous microFEMs with an element-wise bilinear elastic-plastic constitutive model. Clinical significance: Validated heterogeneous microFEMs applied to STB of the humeral head have the potential to significantly improve our understanding of mechanical variations in the bone that occur during OA progression.
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Affiliation(s)
- Nikolas K Knowles
- Department of Radiology, University of Calgary, Calgary, Alberta, Canada
| | - Jonathan Kusins
- Department of Mechanical and Materials Engineering, The University of Western Ontario, London, Ontario, Canada.,Roth, McFarlane Hand and Upper Limb Centre, St. Joseph's Health Care, London, Ontario, Canada
| | - Melanie P Columbus
- Department of Critical Care Medicine, University of Calgary, Calgary, Alberta, Canada
| | - George S Athwal
- Roth, McFarlane Hand and Upper Limb Centre, St. Joseph's Health Care, London, Ontario, Canada
| | - Louis M Ferreira
- Department of Mechanical and Materials Engineering, The University of Western Ontario, London, Ontario, Canada.,Roth, McFarlane Hand and Upper Limb Centre, St. Joseph's Health Care, London, Ontario, Canada
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Auger JD, Naik AJ, Murakami AM, Gerstenfeld LC, Morgan EF. Spatial assessment of femoral neck bone density and microstructure in hip osteoarthritis. Bone Rep 2022; 16:101155. [PMID: 34984214 PMCID: PMC8693349 DOI: 10.1016/j.bonr.2021.101155] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Accepted: 11/30/2021] [Indexed: 11/18/2022] Open
Abstract
Osteoarthritis (OA) is known to involve profound changes in bone density and microstructure near to, and even distal to, the joint. Critically, however, a full, spatial picture of these abnormalities has not been well documented in a quantitative fashion in hip OA. Here, micro-computed tomography (44.8 μm/voxel) and data-driven computational anatomy were used to generate 3-D maps of the distribution of bone density and microstructure in human femoral neck samples with early (6F/4M, mean age = 51.3 years), moderate (14F/8M, mean age = 60 years), and severe (16F/6M, mean age = 63.3 years) radiographic OA. With increasing severity of radiographic OA, there was decreased cortical bone mineral density (BMD) (p=0.003), increased cortical thickness (p=0.001), increased cortical porosity (p=0.0028), and increased cortical cross-sectional area (p=0.0012, due to an increase in periosteal radius (p=0.018)), with no differences detected in the total femoral neck or trabecular compartment measures. No OA-related region-specific differences were detected through Statistical Parametric Mapping, but there were trends towards decreased tissue mineral density (TMD) in the inferior femoral neck with increasing OA severity (0.050 < p ≤ 0.091), possibly due to osteophytes. Overall, the lack of differences in cortical TMD among radiographic OA groups indicated that the decrease in cortical BMD with increasing OA severity was largely due to the increased cortical porosity rather than decreased tissue mineralization. As porosity is inversely associated with stiffness and strength in cortical bone, increased porosity may offset the effect that increased cortical cross-sectional area would be expected to have on reducing stresses within the femoral neck. The use of high-resolution imaging and quantitative spatial assessment in this study provide insight into the heterogeneous and multi-faceted changes in density and microstructure in hip OA, which have implications for OA progression and fracture risk.
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Affiliation(s)
| | | | - Akira M. Murakami
- Boston University School of Medicine, Boston, MA, United States of America
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5
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The Potential Role of Protease Systems in Hemophilic Arthropathy. Blood Adv 2022; 6:5505-5515. [PMID: 35580335 DOI: 10.1182/bloodadvances.2022007028] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Accepted: 05/10/2022] [Indexed: 11/20/2022] Open
Abstract
Haemophilic arthropathy is characterised by joint damage following recurrent joint bleeds frequently observed in patients affected by the clotting disorder haemophilia. Joint bleeds or haemarthroses trigger inflammation in the synovial tissue which promotes damage to the articular cartilage. The plasminogen activation system is integral to fibrinolysis, and urokinase plasminogen activator or uPA in particular is strongly upregulated following haemarthroses. uPA is a serine protease that catalyses the production of plasmin, a broad-spectrum protease that can degrade fibrin as well as proteins of the joint extracellular matrix and cartilage. Both uPA and plasmin are able to proteolytically generate active forms of matrix metalloproteinases (MMPs). The MMPs are a family of >20 proteases that are secreted as inactive proenzymes and are activated extracellularly. MMPs are involved in degradation of all types of collagen and proteoglycans that constitute the extracellular matrix, which provides structural support to articular cartilage. The MMPs have an established role in joint destruction following rheumatoid arthritis (RA). They degrade cartilage and bone, indirectly promoting angiogenesis. MMPs are also implicated in the pathology of osteoarthritis (OA) characterized by degradation of the cartilage matrix that precipitates joint damage and deformity. HA shares a number of overlapping pathological characteristics with RA and OA. Here we discuss how the plasminogen activation system and MMPs might exacerbate joint damage in HA, lending insight into novel possible therapeutic targets to reduce co-morbidity of haemophilia.
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6
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Hodgkinson T, Amado IN, O'Brien FJ, Kennedy OD. The role of mechanobiology in bone and cartilage model systems in characterizing initiation and progression of osteoarthritis. APL Bioeng 2022. [DOI: 10.1063/5.0068277] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Affiliation(s)
- Tom Hodgkinson
- Department of Anatomy and Regenerative Medicine, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Isabel N. Amado
- Department of Anatomy and Regenerative Medicine, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Fergal J. O'Brien
- Department of Anatomy and Regenerative Medicine, Royal College of Surgeons in Ireland, Dublin, Ireland
- Advanced Materials Bio-Engineering Research Centre (AMBER), Dublin, Ireland
- Trinity Centre for Biomedical Engineering, Trinity College Dublin, Dublin, Ireland
| | - Oran D. Kennedy
- Department of Anatomy and Regenerative Medicine, Royal College of Surgeons in Ireland, Dublin, Ireland
- Advanced Materials Bio-Engineering Research Centre (AMBER), Dublin, Ireland
- Trinity Centre for Biomedical Engineering, Trinity College Dublin, Dublin, Ireland
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7
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Xu L, Song H, Ren Y, Fang J, Zhou C, Zhang H, Meng X, Cheng G, Zhuo R, Qin C. Antibiotic-Impregnated Calcium Sulfate vs. Wound Irrigation-Suction to Treat Chronic Calcaneal Osteomyelitis. Foot Ankle Int 2022; 43:331-342. [PMID: 34719970 DOI: 10.1177/10711007211049768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
BACKGROUND Chronic osteomyelitis of calcaneus is not rare but is very hard to treat. Irrigation-suction and antibiotic-impregnated calcium sulfate following debridement are commonly used in managing chronic osteomyelitis, but their effects have rarely been compared. We aimed to compare the effectiveness of antibiotic-impregnated calcium sulfate with irrigation-suction in the treatment of patients with chronic calcaneal osteomyelitis. METHODS From January 2011 to June 2018, adult patients at our institute with chronic osteomyelitis receiving treatment of either antibiotic-impregnated calcium sulfate (CS group) or irrigation-suction (IS group) following thorough debridement were screened and selected according to the inclusion and exclusion criteria. The clinical presentation, laboratory tests, complications, and the ultimate single-staged cure rate and recurrence were compared. RESULTS A total of 61 patients, including 41 in the CS group and 20 in the IS group, were included in our study. Of the patients, 85.4% in the CS group and 60.0% in the IS group (P = .006) were successfully cured in the single stage, respectively, without infection recurrence. Lower infection recurrence rates with shorter hospital stay were found in the CS group than the IS group. Inflammatory biomarkers after surgery with both treatments were slightly decreased and not significantly different from preoperative or between-groups postoperative. Exudate from incision was found primarily in the CS group. CONCLUSION This study demonstrates that both antibiotic-impregnated calcium sulfate and irrigation-suction after careful and thorough surgical debridement are generally effective in treating chronic calcaneal osteomyelitis. Antibiotic-impregnated calcium sulfate achieved a higher single-staged cure rate but was associated with an increased postoperative wound exudate. LEVEL OF EVIDENCE Level III, retrospective cohort study.
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Affiliation(s)
- Lei Xu
- Department of Orthopedics and Traumatology, Guangdong Second Provincial General Hospital, the Second Clinical Medical School of Southern Medical University, 466 Xingang Road C., Haizhu District, Guangzhou, 510317, China
| | - Huijuan Song
- Department of Nursing, Southern Medical University Nanfang Hospital, No.1838, Guangzhou Ave. North, Baiyun District, Guangzhou, China
| | - Ying Ren
- Department of Orthopedics and Traumatology, Guangdong Second Provincial General Hospital, the Second Clinical Medical School of Southern Medical University, 466 Xingang Road C., Haizhu District, Guangzhou, 510317, China.,Department of Nursing, Southern Medical University Nanfang Hospital, No.1838, Guangzhou Ave. North, Baiyun District, Guangzhou, China
| | - Jia Fang
- Department of Orthopedics and Traumatology, Guangdong Second Provincial General Hospital, the Second Clinical Medical School of Southern Medical University, 466 Xingang Road C., Haizhu District, Guangzhou, 510317, China
| | - Chunhao Zhou
- Department of Orthopedics and Traumatology, Guangdong Second Provincial General Hospital, the Second Clinical Medical School of Southern Medical University, 466 Xingang Road C., Haizhu District, Guangzhou, 510317, China
| | - Hongan Zhang
- Department of Orthopedics and Traumatology, Guangdong Second Provincial General Hospital, the Second Clinical Medical School of Southern Medical University, 466 Xingang Road C., Haizhu District, Guangzhou, 510317, China
| | - Xiangqing Meng
- Department of Orthopedics and Traumatology, Guangdong Second Provincial General Hospital, the Second Clinical Medical School of Southern Medical University, 466 Xingang Road C., Haizhu District, Guangzhou, 510317, China
| | - Guoyun Cheng
- Department of Orthopedics and Traumatology, Guangdong Second Provincial General Hospital, the Second Clinical Medical School of Southern Medical University, 466 Xingang Road C., Haizhu District, Guangzhou, 510317, China
| | - Ribo Zhuo
- Department of Orthopedics and Traumatology, Guangdong Second Provincial General Hospital, the Second Clinical Medical School of Southern Medical University, 466 Xingang Road C., Haizhu District, Guangzhou, 510317, China
| | - Chenghe Qin
- Department of Orthopedics and Traumatology, Guangdong Second Provincial General Hospital, the Second Clinical Medical School of Southern Medical University, 466 Xingang Road C., Haizhu District, Guangzhou, 510317, China.,Department of Orthopedics and Traumatology, Southern Medical University Nanfang Hospital, No.1838, Guangzhou Ave. North, Baiyun District, Guangzhou, China
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8
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Zhang M, Hu W, Cai C, Wu Y, Li J, Dong S. Advanced application of stimuli-responsive drug delivery system for inflammatory arthritis treatment. Mater Today Bio 2022; 14:100223. [PMID: 35243298 PMCID: PMC8881671 DOI: 10.1016/j.mtbio.2022.100223] [Citation(s) in RCA: 89] [Impact Index Per Article: 44.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Revised: 02/15/2022] [Accepted: 02/16/2022] [Indexed: 02/06/2023] Open
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9
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Li Y, Liem Y, Dall'Ara E, Sullivan N, Ahmed H, Blom A, Sharif M. Subchondral bone microarchitecture and mineral density in human osteoarthritis and osteoporosis: A regional and compartmental analysis. J Orthop Res 2021; 39:2568-2580. [PMID: 33751647 DOI: 10.1002/jor.25018] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 02/01/2021] [Accepted: 03/02/2021] [Indexed: 02/04/2023]
Abstract
Osteoarthritis (OA) and osteoporosis (OP) are historically considered to be inversely correlated but there may be an overlap between the pathophysiology of the two diseases. This study aimed to investigate the subchondral bone microarchitecture and matrix mineralization, and the association between them in OA and OP in relation to the degree of cartilage degeneration. Fifty-six osteochondral plugs were collected from 16 OA femoral heads. They were graded on a regional basis according to the stages of cartilage degeneration, as evaluated by a new macroscopic and a modified microscopic grading system. Twenty-one plugs were collected from seven femoral heads with OP. Plugs were scanned by microcomputed tomography and the microarchitectural and mineral properties were obtained for both subchondral plate and trabecular bone. Microarchitecture and material and apparent densities of subchondral bone in OP were similar to regions with early cartilage degeneration but different from regions with advanced cartilage degradation in OA femoral heads. Subchondral trabecular bone was more mineralized than subchondral plate in both OP and OA, and this compartmental difference varied by severity of cartilage degradation. Furthermore, the relationship among trabecular bone volume fraction, tissue mineral density, and apparent bone density was similar in OP and different stages of OA. Subchondral bone microarchitecture and mineral properties in OP are different from OA in a regionalized manner in relation to stages of cartilage degeneration. Both regional and compartmental differences at structural, material, and cellular levels need to be studied to understand the transition of OA subchondral bone from being osteoporotic to sclerotic.
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Affiliation(s)
- Yunfei Li
- Musculoskeletal Research Unit, Translational Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK
| | - Yulia Liem
- Musculoskeletal Research Unit, Translational Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK
| | - Enrico Dall'Ara
- Department of Oncology and Metabolism and Insigneo Institute for in silico Medicine, University of Sheffield, Sheffield, UK
| | - Niall Sullivan
- Department of Trauma and Orthopaedics, Bristol Royal Infirmary, University Hospitals Bristol NHS Foundation Trust, Bristol, UK
| | - Haroon Ahmed
- Bristol Medical School, University of Bristol, Bristol, UK
| | - Ashley Blom
- Musculoskeletal Research Unit, Translational Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK
- National Institute for Health Research Bristol Biomedical Research Centre, University Hospitals Bristol NHS Foundation Trust and University of Bristol, Bristol, UK
| | - Mohammed Sharif
- Musculoskeletal Research Unit, Translational Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK
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10
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Aizah N, Chong PP, Kamarul T. Early Alterations of Subchondral Bone in the Rat Anterior Cruciate Ligament Transection Model of Osteoarthritis. Cartilage 2021; 13:1322S-1333S. [PMID: 31569963 PMCID: PMC8804754 DOI: 10.1177/1947603519878479] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
OBJECTIVE Advances in research have shown that the subchondral bone plays an important role in the propagation of cartilage loss and progression of osteoarthritis (OA), but whether the subchondral bone changes precede or lead to articular cartilage loss remains debatable. In order to elucidate the subchondral bone and cartilage changes that occur in early OA, an experiment using anterior cruciate ligament transection (ACLT) induced posttraumatic OA model of the rat knee was conducted. DESIGN Forty-two Sprague Dawley rats were divided into 2 groups: the ACLT group and the nonoperated control group. Surgery was conducted on the ACLT group, and subsequently rats from both groups were sacrificed at 1, 2, and 3 weeks postsurgery. Subchondral bone was evaluated using a high-resolution peripheral quantitative computed tomography scanner, while cartilage was histologically evaluated and scored. RESULTS A significant reduction in the subchondral trabecular bone thickness and spacing was found as early as 1 week postsurgery in ACLT rats compared with the nonoperated control. This was subsequently followed by a reduction in bone mineral density and bone fractional volume at week 2, and finally a decrease in the trabecular number at week 3. These changes occurred together with cartilage degeneration as reflected by an increasing Mankin score over all 3 weeks. CONCLUSIONS Significant changes in subchondral bone occur very early in OA concurrent with surface articular cartilage degenerative change suggest that factors affecting bone remodeling and resorption together with cartilage matrix degradation occur very early in the disease.
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Affiliation(s)
- Nik Aizah
- National Orthopaedic Centre of
Excellence for Research and Learning (NOCERAL), Department of Orthopaedic Surgery,
Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia,Nik Aizah, National Orthopaedic Centre of
Excellence for Research and Learning (NOCERAL), Department of Orthopaedic
Surgery, Faculty of Medicine, University of Malaya, Kuala Lumpur 50603,
Malaysia.
| | - Pan Pan Chong
- National Orthopaedic Centre of
Excellence for Research and Learning (NOCERAL), Department of Orthopaedic Surgery,
Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Tunku Kamarul
- National Orthopaedic Centre of
Excellence for Research and Learning (NOCERAL), Department of Orthopaedic Surgery,
Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
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11
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Jiang A, Xu P, Sun S, Zhao Z, Tan Q, Li W, Song C, Leng H. Cellular alterations and crosstalk in the osteochondral joint in osteoarthritis and promising therapeutic strategies. Connect Tissue Res 2021; 62:709-719. [PMID: 33397157 DOI: 10.1080/03008207.2020.1870969] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Accepted: 12/28/2020] [Indexed: 02/03/2023]
Abstract
Osteoarthritis (OA) is a joint disorder involving cartilage degeneration and subchondral bone sclerosis. The bone-cartilage interface is implicated in OA pathogenesis due to its susceptibility to mechanical and biological factors. The crosstalk between cartilage and the underlying subchondral bone is elevated in OA due to multiple factors, such as increased vascularization, porosity, microcracks and fissures. Changes in the osteochondral joint are traceable to alterations in chondrocytes and bone cells (osteoblasts, osteocytes and osteoclasts). The phenotypes of these cells can change with the progression of OA. Aberrant intercellular communications among bone cell-bone cell and bone cell-chondrocyte are of great importance and might be the factors promoting OA development. An appreciation of cellular phenotypic changes in OA and the mechanisms by which these cells communicate would be expected to lead to the development of targeted drugs with fewer side effects.
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Affiliation(s)
- Ai Jiang
- Department of Orthopaedics, Peking University Third Hospital, Beijing, China
| | - Peng Xu
- State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing, China
| | - Shang Sun
- Department of Orthopaedics, Peking University Third Hospital, Beijing, China
| | - Zhenda Zhao
- Department of Orthopaedics, Peking University Third Hospital, Beijing, China
| | - Qizhao Tan
- Department of Orthopaedics, Peking University Third Hospital, Beijing, China
| | - Weishi Li
- Department of Orthopaedics, Peking University Third Hospital, Beijing, China
- Engineering Research Center of Bone and Joint Precision Medicine, Ministry of Education Lisbon Portugal
| | - Chunli Song
- Department of Orthopaedics, Peking University Third Hospital, Beijing, China
- Beijing Key Lab of Spine Diseases, Beijing, China
| | - Huijie Leng
- Department of Orthopaedics, Peking University Third Hospital, Beijing, China
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12
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Ren P, Niu H, Cen H, Jia S, Gong H, Fan Y. Biochemical and Morphological Abnormalities of Subchondral Bone and Their Association with Cartilage Degeneration in Spontaneous Osteoarthritis. Calcif Tissue Int 2021; 109:179-189. [PMID: 33715052 DOI: 10.1007/s00223-021-00834-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Accepted: 02/25/2021] [Indexed: 10/21/2022]
Abstract
This study aims to investigate how biochemical composition in subchondral bone (SB) relates to the sulfated glycosaminoglycan (sGAG) content of articular cartilage (AC) in the knee joint of guinea pigs from the early to moderate osteoarthritis (OA). Male Dunkin Hartley strain guinea pigs were grouped according to age (1, 3, 6, and 9 months, with 10 guinea pigs in each group). The biochemical properties of the AC and SB in the tibial plateau of the guinea pigs were determined through histology and Raman spectroscopy, respectively. Furthermore, the microstructures of the SB were investigated using micro-computed tomography (micro-CT) and histology. Increased thickness and bone mineral density (BMD) and decreased porosity were observed in the subchondral plate (SP) with the progression of spontaneous OA, accompanied by a decreasing trend in sGAG integrated optical density (IOD) of AC. Compared with the changes in the microstructure of subchondral bone, the content of sGAG was more correlated to the changes in the mineral/matrix ratio of subchondral bone. The mineralization of the matrix was significantly correlated to the content of sGAG compared with crystallinity/maturity and Type B carbonate substitution. PO43- ν1/Amide III was more correlated to the content of sGAG than PO43- ν1/Amide I, PO43- ν1/CH2 wag during the progression of spontaneous osteoarthritis. This study demonstrated that the mineralization of subchondral bone plays a crucial role in the pathogenesis of OA. Future studies may access to the mineralization of subchondral bone in addition to its microstructure in the study for pathogenesis and early diagnosis of osteoarthritis.
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Affiliation(s)
- Pengling Ren
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, People's Republic of China
- Department of Radiology, Beijing Friendship Hospital, Capital Medical University, Beijing, People's Republic of China
| | - Haijun Niu
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, People's Republic of China
| | - Haipeng Cen
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, People's Republic of China
| | - Shaowei Jia
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, People's Republic of China
| | - He Gong
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, People's Republic of China.
- Department of Radiology, Beijing Friendship Hospital, Capital Medical University, Beijing, People's Republic of China.
| | - Yubo Fan
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, People's Republic of China
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13
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Orhan C, Juturu V, Sahin E, Tuzcu M, Ozercan IH, Durmus AS, Sahin N, Sahin K. Undenatured Type II Collagen Ameliorates Inflammatory Responses and Articular Cartilage Damage in the Rat Model of Osteoarthritis. Front Vet Sci 2021; 8:617789. [PMID: 33748207 PMCID: PMC7970046 DOI: 10.3389/fvets.2021.617789] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Accepted: 01/20/2021] [Indexed: 01/01/2023] Open
Abstract
Osteoarthritis (OA) is an age-related joint disease that includes gradual disruption of the articular cartilage and the resulting pain. The present study was designed to test the effects of undenatured type II collagen (UC-II®) on joint inflammation in the monoiodoacetate (MIA) OA model. We also investigated possible mechanisms underlying these effects. Female Wistar rats were divided into three groups: (i) Control; (ii) MIA-induced rats treated with vehicle; (iii) MIA-induced rats treated with UC-II (4 mg/kg BW). OA was induced in rats by intra-articular injection of MIA (1 mg) after seven days of UC-II treatment. UC-II reduced MIA-induced Kellgren-Lawrence scoring (53.3%, P < 0.05). The serum levels of inflammatory cytokines [IL-1β (7.8%), IL-6 (18.0%), TNF-α (25.9%), COMP (16.4%), CRP (32.4%)] were reduced in UC-II supplemented group (P < 0.0001). In the articular cartilage, UC-II inhibited the production of PGE2 (19.6%) and the expression of IL-1β, IL-6, TNF-a, COX-2, MCP-1, NF-κB, MMP-3, RANKL (P < 0.001). The COL-1 and OPG levels were increased, and MDA decreased in UC-II supplemented rats (P < 0.001). UC-II could be useful to alleviate joint inflammation and pain in OA joints by reducing the expression of inflammatory mediators.
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Affiliation(s)
- Cemal Orhan
- Department of Animal Nutrition, Faculty of Veterinary Medicine, Firat University, Elazig, Turkey
| | - Vijaya Juturu
- Research and Development, Lonza, Morristown, NJ, United States
| | - Emre Sahin
- Department of Animal Nutrition, Faculty of Veterinary Medicine, Firat University, Elazig, Turkey
| | - Mehmet Tuzcu
- Division of Biology, Faculty of Science, Firat University, Elazig, Turkey
| | | | - Ali Said Durmus
- Department of Surgery, Faculty of Veterinary Medicine, Firat University, Elazig, Turkey
| | - Nurhan Sahin
- Department of Animal Nutrition, Faculty of Veterinary Medicine, Firat University, Elazig, Turkey
| | - Kazim Sahin
- Department of Animal Nutrition, Faculty of Veterinary Medicine, Firat University, Elazig, Turkey
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14
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Bone phenotypes in rheumatology - there is more to bone than just bone. BMC Musculoskelet Disord 2020; 21:789. [PMID: 33248451 PMCID: PMC7700716 DOI: 10.1186/s12891-020-03804-2] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Accepted: 11/17/2020] [Indexed: 12/14/2022] Open
Abstract
Osteoarthritis, rheumatoid arthritis, psoriatic arthritis, and ankylosing spondylitis, all have one clear common denominator; an altered turnover of bone. However, this may be more complex than a simple change in bone matrix and mineral turnover. While these diseases share a common tissue axis, their manifestations in the area of pathology are highly diverse, ranging from sclerosis to erosion of bone in different regions. The management of these diseases will benefit from a deeper understanding of the local versus systemic effects, the relation to the equilibrium of the bone balance (i.e., bone formation versus bone resorption), and the physiological and pathophysiological phenotypes of the cells involved (e.g., osteoblasts, osteoclasts, osteocytes and chondrocytes). For example, the process of endochondral bone formation in chondrocytes occurs exists during skeletal development and healthy conditions, but also in pathological conditions. This review focuses on the complex molecular and cellular taxonomy of bone in the context of rheumatological diseases that alter bone matrix composition and maintenance, giving rise to different bone turnover phenotypes, and how biomarkers (biochemical markers) can be applied to potentially describe specific bone phenotypic tissue profiles.
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15
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Wu Z, Wang B, Tang J, Bai B, Weng S, Xie Z, Shen Z, Yan D, Chen L, Zhang J, Yang L. Degradation of subchondral bone collagen in the weight-bearing area of femoral head is associated with osteoarthritis and osteonecrosis. J Orthop Surg Res 2020; 15:526. [PMID: 33176818 PMCID: PMC7659206 DOI: 10.1186/s13018-020-02065-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/20/2020] [Accepted: 11/02/2020] [Indexed: 01/15/2023] Open
Abstract
Background The aim of the study was to evaluate the change of subchondral bone collagen and trabecular bone in the weight-bearing area of femoral head from patients with osteoarthritis (OA) or osteonecrosis of femoral head (ONFH), and discuss the effect of collagen degradation on OA and ONFH. Methods Femoral heads from patients with femoral neck fracture (FNF) were collected as control group. All collected samples were divided into OA group (N = 10), ONFH group (N = 10), and FNF group (N = 10). Differences of subchondral bone collagen were compared through scanning electron microscope (SEM) observation, immunohistochemistry staining, and Masson’s trichrome staining. Alteration of subchondral bone was displayed through hematoxylin and eosin (H&E) staining and gross morphology. Results SEM results showed that collagen fibers in OA and ONFH group appeared to be thinner, rougher, sparser, and more wizened. Immunohistochemistry and Masson’s trichrome staining results demonstrated that the content of collagen fibers in the OA and ONFH group was obviously less than the FNF group. H&E staining results showed that trabecular bone in OA and ONFH group appeared to be thinner and ruptured. Gross morphology results showed that the degeneration and destruction of cartilage and subchondral bone in OA and ONFH group were severer than FNF group. The characteristics mentioned above in ONFH group were more apparent than OA group. Conclusions This study revealed that degradation of collagen fibers from subchondral bone in the weight-bearing area of femoral head was associated with OA and ONFH, which may help to find new therapeutic strategies of the diseases.
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Affiliation(s)
- Zongyi Wu
- Department of Orthopaedics Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, No.109, Xueyuan West Road, Lucheng District, Wenzhou, 325000, Zhejiang, People's Republic of China
| | - Bingzhang Wang
- Department of Orthopaedics Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, No.109, Xueyuan West Road, Lucheng District, Wenzhou, 325000, Zhejiang, People's Republic of China
| | - Jiahao Tang
- Department of Orthopaedics Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, No.109, Xueyuan West Road, Lucheng District, Wenzhou, 325000, Zhejiang, People's Republic of China
| | - Bingli Bai
- Department of Orthopaedics Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, No.109, Xueyuan West Road, Lucheng District, Wenzhou, 325000, Zhejiang, People's Republic of China
| | - Sheji Weng
- Department of Orthopaedics Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, No.109, Xueyuan West Road, Lucheng District, Wenzhou, 325000, Zhejiang, People's Republic of China
| | - Zhongjie Xie
- Department of Orthopaedics Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, No.109, Xueyuan West Road, Lucheng District, Wenzhou, 325000, Zhejiang, People's Republic of China
| | - Zijian Shen
- Department of Orthopaedics Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, No.109, Xueyuan West Road, Lucheng District, Wenzhou, 325000, Zhejiang, People's Republic of China
| | - Deyi Yan
- Department of Orthopaedics Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, No.109, Xueyuan West Road, Lucheng District, Wenzhou, 325000, Zhejiang, People's Republic of China
| | - Liang Chen
- Department of Orthopaedics Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, No.109, Xueyuan West Road, Lucheng District, Wenzhou, 325000, Zhejiang, People's Republic of China
| | - Jingdong Zhang
- Department of Orthopaedics Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, No.109, Xueyuan West Road, Lucheng District, Wenzhou, 325000, Zhejiang, People's Republic of China.
| | - Lei Yang
- Department of Orthopaedics Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, No.109, Xueyuan West Road, Lucheng District, Wenzhou, 325000, Zhejiang, People's Republic of China.
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16
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Namhong S, Wongdee K, Suntornsaratoon P, Teerapornpuntakit J, Hemstapat R, Charoenphandhu N. Knee osteoarthritis in young growing rats is associated with widespread osteopenia and impaired bone mineralization. Sci Rep 2020; 10:15079. [PMID: 32934295 PMCID: PMC7494904 DOI: 10.1038/s41598-020-71941-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Accepted: 08/24/2020] [Indexed: 01/07/2023] Open
Abstract
Osteoarthritis (OA) leads to joint pain from intraarticular inflammation with articular cartilage erosion, deterioration of joint function and abnormal subchondral bone structure. Besides aging, chronic repetitive joint injury is a common risk factor in young individuals. Nevertheless, whether OA is associated with bone loss at other skeletal sites is unclear. Since OA-associated proinflammatory cytokines-some of which are osteoclastogenic factors-are often detected in the circulation, we hypothesized that the injury-induced knee OA could result in widespread osteopenia at bone sites distant to the injured knee. Here we performed anterior cruciate ligament transection (ACLT) to induce knee OA in one limb of female Sprague-Dawley rats and determined bone changes post-OA induction by micro-computed tomography and computer-assisted bone histomorphometry. We found that although OA modestly altered bone density, histomorphometric analyses revealed increases in bone resorption and osteoid production with impaired mineralization. The bone formation rate was also reduced in OA rats. In conclusions, ACLT in young growing rats induced microstructural defects in the trabecular portion of weight-bearing (tibia) and non-weight-bearing bones (L5 vertebra), in part by enhancing bone resorption and suppressing bone formation. This finding supports the increasing concern regarding the repetitive sport-related ACL injuries and the consequent bone loss.
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Affiliation(s)
- Supitra Namhong
- Department of Physiology, Faculty of Science, Mahidol University, Bangkok, Thailand.,Center of Calcium and Bone Research (COCAB), Faculty of Science, Mahidol University, Rama VI Road, Bangkok, 10400, Thailand
| | - Kannikar Wongdee
- Center of Calcium and Bone Research (COCAB), Faculty of Science, Mahidol University, Rama VI Road, Bangkok, 10400, Thailand.,Faculty of Allied Health Sciences, Burapha University, Chonburi, Thailand
| | - Panan Suntornsaratoon
- Department of Physiology, Faculty of Science, Mahidol University, Bangkok, Thailand.,Center of Calcium and Bone Research (COCAB), Faculty of Science, Mahidol University, Rama VI Road, Bangkok, 10400, Thailand
| | - Jarinthorn Teerapornpuntakit
- Center of Calcium and Bone Research (COCAB), Faculty of Science, Mahidol University, Rama VI Road, Bangkok, 10400, Thailand.,Department of Physiology, Faculty of Medical Science, Naresuan University, Phitsanulok, Thailand
| | - Ruedee Hemstapat
- Department of Pharmacology, Faculty of Science, Mahidol University, Bangkok, Thailand
| | - Narattaphol Charoenphandhu
- Department of Physiology, Faculty of Science, Mahidol University, Bangkok, Thailand. .,Center of Calcium and Bone Research (COCAB), Faculty of Science, Mahidol University, Rama VI Road, Bangkok, 10400, Thailand. .,Institute of Molecular Biosciences, Mahidol University, Nakhon Pathom, Thailand. .,The Academy of Science, The Royal Society of Thailand, Bangkok, Thailand.
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17
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Bonnet CS, Gilbert SJ, Blain EJ, Williams AS, Mason DJ. AMPA/kainate glutamate receptor antagonists prevent posttraumatic osteoarthritis. JCI Insight 2020; 5:134055. [PMID: 32544091 DOI: 10.1172/jci.insight.134055] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Accepted: 05/29/2020] [Indexed: 01/10/2023] Open
Abstract
Musculoskeletal disorders represent the third greatest burden in terms of death and disability in the developed world. Osteoarthritis is the single greatest cause of chronic pain, has no cure, and affects 8.5 and 27 million people in the UK and US, respectively. Osteoarthritis is most prevalent in older people, but as it commonly occurs after joint injury, young people with such injuries are also susceptible. Painful joints are often treated with steroid or hyaluronic acid (HA) injections, but treatments to prevent subsequent joint degeneration remain elusive. In animals, joint injury increases glutamate release into the joint, acting on nerves to cause pain, and joint tissues to cause inflammation and degeneration. This study investigated synovial fluid glutamate concentrations and glutamate receptor (GluR) expression in injured human joints and compared the efficacy of GluR antagonists with current treatments in a mouse model of injury-induced osteoarthritis (ACL rupture). GluRs were expressed in the ligaments and meniscus after knee injury, and synovial fluid glutamate concentrations ranged from 19 to 129 μM. Intra-articular injection of NBQX (GluR antagonist) at the time of injury substantially reduced swelling and degeneration in the mouse ACL rupture model. HA had no effect, and Depo-Medrone reduced swelling for 1 day but increased degeneration by 50%. Intra-articular administration of NBQX modified both symptoms and disease to a greater extent than current treatments. There is an opportunity for repurposing related drugs, developed for CNS disorders and with proven safety in humans, to prevent injury-induced osteoarthritis. This could quickly reduce the substantial burden associated with osteoarthritis.
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Affiliation(s)
- Cleo S Bonnet
- School of Biosciences.,Biomechanics and Bioengineering Research Centre Versus Arthritis, and
| | - Sophie J Gilbert
- School of Biosciences.,Biomechanics and Bioengineering Research Centre Versus Arthritis, and
| | - Emma J Blain
- School of Biosciences.,Biomechanics and Bioengineering Research Centre Versus Arthritis, and
| | - Anwen S Williams
- Biomechanics and Bioengineering Research Centre Versus Arthritis, and.,School of Medicine, Cardiff University, Cardiff, United Kingdom
| | - Deborah J Mason
- School of Biosciences.,Biomechanics and Bioengineering Research Centre Versus Arthritis, and
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18
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Gu J, Lin H, Zhang Y, Xu T, Wang T, Xue X, Zhang W, Liu H. Activation of GPR40 Suppresses AGE-Induced Reduction of Type II Collagen and Aggrecan in Human SW1353 Chondrocytes. DRUG DESIGN DEVELOPMENT AND THERAPY 2020; 14:2371-2379. [PMID: 32606604 PMCID: PMC7305341 DOI: 10.2147/dddt.s239273] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Accepted: 03/15/2020] [Indexed: 12/14/2022]
Abstract
Introduction Osteoarthritis (OA) is an age-related chronic degenerative disease. Accumulation of advanced glycation end products (AGEs) induces degradation of the articular extracellular matrix (ECM) and is considered a critical step toward the development and progression of OA. GPR40 is a well-known free fatty acid receptor, which possesses pleiotropic effects in different types of diseases. However, the biological function of GPR40 in OA is indistinct. The purpose of the present study was to determine the impact of the GPR40 agonist GW9508 on AGEs-treated chondrocytes. Materials and Methods Cultures of human SW1353 chondrocytes were stimulated with GW9508, followed by exposure to 100 µg/mL AGEs. Gene and protein expression of TNF-α, IL-6, MMP-3, MMP-13, ADAMTS-4, and ADAMTS-5 were measured by real-time PCR and ELISA analysis. The levels of type II collagen, aggrecan, and nuclear NF-κB p65 were measured by Western blot analysis. A luciferase assay measured the transcriptional activity of NF-κB. Results The results show that treatment with AGEs decreased the expression of GPR40 in human SW1353 chondrocytes. Treatment with GW9508 plays a beneficial role in protecting type II Collagen and aggrecan from degeneration by attenuating the expression of MMP-3, MMP-13, ADAMTS-4, and ADAMTS-5. Additionally, GW9508 reduces the appearance of pro-inflammatory cytokines and suppresses NF-κB activation in AGEs-induced chondrocytes. Notably, co-treatment with GW1100, a specific antagonist of GPR40, abolishes the beneficial role of GW9508 against AGEs, implying that GPR40 mediates these effects of GW9508. Conclusion Our results suggest that GPR40 is a novel therapeutic target for OA and that GPR40 agonists, including GW9508, may have therapeutic potential in preventing and slowing the progression of OA.
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Affiliation(s)
- Jiaxiang Gu
- Department of Orthopaedics, Subei People's Hospital Affiliated to Yangzhou University, Yangzhou 225000, People's Republic of China
| | - Hongsheng Lin
- Department of Orthopaedics, Xiangya Second Affiliated Hospital of Center South University, Changsha 410008, People's Republic of China
| | - Yiyuan Zhang
- Department of Orthopaedics, Subei People's Hospital Affiliated to Yangzhou University, Yangzhou 225000, People's Republic of China
| | - Tao Xu
- Department of Orthopaedics, Subei People's Hospital Affiliated to Yangzhou University, Yangzhou 225000, People's Republic of China
| | - Tianliang Wang
- Department of Orthopaedics, Subei People's Hospital Affiliated to Yangzhou University, Yangzhou 225000, People's Republic of China
| | - Xiawei Xue
- Department of Orthopaedics, Subei People's Hospital Affiliated to Yangzhou University, Yangzhou 225000, People's Republic of China
| | - Wenzhong Zhang
- Department of Orthopaedics, Subei People's Hospital Affiliated to Yangzhou University, Yangzhou 225000, People's Republic of China
| | - Hongjun Liu
- Department of Orthopaedics, Subei People's Hospital Affiliated to Yangzhou University, Yangzhou 225000, People's Republic of China
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Lee YR, Findlay DM, Muratovic D, Gill TK, Kuliwaba JS. Raman microspectroscopy demonstrates reduced mineralization of subchondral bone marrow lesions in knee osteoarthritis patients. Bone Rep 2020; 12:100269. [PMID: 32395569 PMCID: PMC7210419 DOI: 10.1016/j.bonr.2020.100269] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Accepted: 04/06/2020] [Indexed: 12/30/2022] Open
Abstract
INTRODUCTION Bone marrow lesions (BMLs) are frequently identified by MRI in the subchondral bone in knee osteoarthritis (KOA). BMLs are known to be closely associated with joint pain, loss of the cartilage and structural changes in the subchondral trabecular bone (SCTB). Despite this, understanding of the nature of BMLs at the trabecular tissue level is incomplete. Thus, we used Raman microspectroscopy to examine the biochemical properties of SCTB from KOA patients with presence or absence of BMLs (OA-BML, OA No-BML; respectively), in comparison with age-matched cadaveric non-symptomatic controls (Non-OA CTL). METHODS Tibial plateau (TP) specimens were collected from 19 KOA arthroplasty patients (6-Male, 13-Female; aged 56-74 years). BMLs were identified ex-vivo by MRI, using PDFS- and T1-weighted sequences. The KOA specimens were then categorized into an OA-BML group (n = 12; containing a BML within the medial condyle only) and an OA No-BML group (n = 7; with no BMLs identified in the TP). The control (CTL) group consisted of Non-OA cadaveric TP samples with no BMLs and no macroscopic or microscopic evidence of OA-related changes (n = 8; 5-Male, 3-Female; aged 44-80 years). Confocal Raman microspectroscopy, with high spatial resolution, was used to quantify the biochemical properties of SCTB tissue of both the medial and the lateral condyle in each group. RESULTS The ratios of peak intensity and integrated area of bone matrix mineral (Phosphate (v1), Phosphate (v2) and Phosphate (v4)), to surrogates of the organic phase of bone matrix (Amide I, Proline and Amide III), were calculated. Within the medial compartment, the mineral:organic matrix ratios were significantly lower for OA-BML, compared to Non-OA CTL. These ratios were also significantly lower for the OA-BML medial compartment, compared to the OA-BML lateral compartment. There were no group or compartmental differences for Carbonate:Phosphate (v1, v2 and v4), Amide III (α-helix):Amide III (random-coil), Hydroxyproline:Proline, or Crystallinity. CONCLUSION As measured by Raman microspectroscopy, SCTB tissue in BML zones in KOA is significantly less mineralized than the corresponding zones in individuals without OA. These data are consistent with those obtained using other methods (e.g. Fourier transform infrared spectroscopy; FTIR) and with the increased rate of bone remodeling observed in BML zones. Reduced mineralization may change the biomechanical properties of the trabecular bone in BMLs and the mechanical interaction between subchondral bone and its overlying cartilage, with potential implications for the development and progression of OA.
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Affiliation(s)
- Yea-Rin Lee
- Adelaide Medical School, The University of Adelaide, Adelaide, Australia
- School of Pharmacy and Medical Sciences, The University of South Australia, Adelaide, Australia
| | - David M. Findlay
- Adelaide Medical School, The University of Adelaide, Adelaide, Australia
| | - Dzenita Muratovic
- Adelaide Medical School, The University of Adelaide, Adelaide, Australia
| | - Tiffany K. Gill
- Adelaide Medical School, The University of Adelaide, Adelaide, Australia
| | - Julia S. Kuliwaba
- Adelaide Medical School, The University of Adelaide, Adelaide, Australia
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20
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Su W, Liu G, Liu X, Zhou Y, Sun Q, Zhen G, Wang X, Hu Y, Gao P, Demehri S, Cao X, Wan M. Angiogenesis stimulated by elevated PDGF-BB in subchondral bone contributes to osteoarthritis development. JCI Insight 2020; 5:135446. [PMID: 32208385 PMCID: PMC7205438 DOI: 10.1172/jci.insight.135446] [Citation(s) in RCA: 99] [Impact Index Per Article: 24.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Accepted: 03/18/2020] [Indexed: 12/21/2022] Open
Abstract
Increased subchondral bone angiogenesis with blood vessels breaching the tidemark into the avascular cartilage is a diagnostic feature of human osteoarthritis. However, the mechanisms that initiate subchondral bone angiogenesis remain unclear. We show that abnormally increased platelet-derived growth factor-BB (PDGF-BB) secretion by mononuclear preosteoclasts induces subchondral bone angiogenesis, contributing to osteoarthritis development. In mice after destabilization of the medial meniscus (DMM), aberrant joint subchondral bone angiogenesis developed during an early stage of osteoarthritis, before articular cartilage damage occurred. Mononuclear preosteoclasts in subchondral bone secrete excessive amounts of PDGF-BB, which activates platelet-derived growth factor receptor-β (PDGFR-β) signaling in pericytes for neo-vessel formation. Selective knockout of PDGF-BB in preosteoclasts attenuates subchondral bone angiogenesis and abrogates joint degeneration and subchondral innervation induced by DMM. Transgenic mice that express PDGF-BB in preosteoclasts recapitulate pathological subchondral bone angiogenesis and develop joint degeneration and subchondral innervation spontaneously. Our study provides the first evidence to our knowledge that PDGF-BB derived from preosteoclasts is a key driver of pathological subchondral bone angiogenesis during osteoarthritis development and offers a new avenue for developing early treatments for this disease.
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Affiliation(s)
- Weiping Su
- Department of Orthopaedic Surgery, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
- Department of Orthopaedic Surgery, The Xiangya Hospital of Central South University, Changsha, China
| | - Guanqiao Liu
- Department of Orthopaedic Surgery, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
- Department of Orthopaedics and Traumatology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Xiaonan Liu
- Department of Orthopaedic Surgery, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
- Department of Orthopaedics and Traumatology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Yangying Zhou
- Department of Oncology, The Xiangya Hospital of Central South University, Changsha, China
| | - Qi Sun
- Department of Orthopaedic Surgery, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
- Department of Orthopaedics, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai, China
| | - Gehua Zhen
- Department of Orthopaedic Surgery, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Xiao Wang
- Department of Orthopaedic Surgery, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Yihe Hu
- Department of Orthopaedic Surgery, The Xiangya Hospital of Central South University, Changsha, China
| | | | - Shadpour Demehri
- Department of Radiology, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Xu Cao
- Department of Orthopaedic Surgery, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Mei Wan
- Department of Orthopaedic Surgery, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
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21
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Tibial subchondral trabecular bone micromechanical and microarchitectural properties are affected by alignment and osteoarthritis stage. Sci Rep 2020; 10:3975. [PMID: 32132556 PMCID: PMC7055326 DOI: 10.1038/s41598-020-60464-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Accepted: 12/04/2019] [Indexed: 11/29/2022] Open
Abstract
At advanced knee osteoarthritis (OA) stages subchondral trabecular bone (STB) is altered. Lower limb alignment plays a role in OA progression and modify the macroscopic loading of the medial and lateral condyles of the tibial plateau. How the properties of the STB relate to alignment and OA stage is not well defined. OA stage (KL scores 2–4) and alignment (HKA from 17° Varus to 8° Valgus) of 30 patients were measured and their tibial plateau were collected after total knee arthroplasty. STB tissue elastic modulus, bone volume fraction (BV/TV) and trabecula thickness (Tb.Th) were evaluated with nanoindentation and µCT scans (8.1 µm voxel-size) of medial and lateral samples of each plateau. HKA and KL scores were statistically significantly associated with STB elastic modulus, BV/TV and Tb.Th. Medial to lateral BV/TV ratio correlated with HKA angle (R = −0.53, p = 0.016), revealing a higher ratio for varus than valgus subjects. STB properties showed lower values for KL stage 4 patients. Tissue elastic modulus ratios and BV.TV ratios were strongly correlated (R = 0.81, p < 0.001). Results showed that both micromechanical and microarchitectural properties of STB are affected by macroscopic loading at late stage knee OA. For the first time, a strong association between tissue stiffness and quantity of OA STB was demonstrated.
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Knowles NK, Kusins J, Columbus MP, Athwal GS, Ferreira LM. Morphological and Apparent-Level Stiffness Variations Between Normal and Osteoarthritic Bone in the Humeral Head. J Orthop Res 2020; 38:503-509. [PMID: 31556155 DOI: 10.1002/jor.24482] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Accepted: 09/13/2019] [Indexed: 02/04/2023]
Abstract
Osteoarthritis (OA) is characterized by morphological changes that alter bone structure and mechanical properties. This study compared bone morphometric parameters and apparent modulus between humeral heads excised from end-stage OA patients undergoing total shoulder arthroplasty (n = 28) and non-pathologic normal cadavers (n = 28). Morphometric parameters were determined in central cores, with regional variations compared in four medial to lateral regions. Linear regression compared apparent modulus, morphometric parameters, and age. Micro finite element models estimated trabecular apparent modulus and derived density-modulus relationships. Significant differences were found for bone volume fraction (p < 0.001) and trabecular thickness (p < 0.001) in the most medial regions. No significant differences occurred between morphometric parameters and apparent modulus or age, except in slope between groups for apparent modulus versus trabecular number (p = 0.021), and in intercept for trabecular thickness versus age (p = 0.040). Significant differences occurred in both slope and intercept between density-modulus regression fits for each group (p ≤ 0.001). The normal group showed high correlations in the power-fit (r2 = 0.87), with a lower correlation (r2 = 0.61) and a more linear relationship, in the OA group. This study suggests that alterations in structure and apparent modulus persist mainly in subchondral regions of end-stage OA bone. As such, if pathologic regions are removed during joint replacement, computational models that utilize modeling parameters from non-pathologic normal bone may be applied to end-stage OA bone. An improved understanding of humeral trabecular bone variations has potential to improve the surgical management of end-stage OA patients. © 2019 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 38:503-509, 2020.
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Affiliation(s)
- Nikolas K Knowles
- School of Biomedical Engineering, The University of Western Ontario, London, Ontario, Canada.,Roth
- McFarlane Hand and Upper Limb Centre, St. Josephs Health Care, London, Ontario, Canada.,Collaborative Training Program in MSK Health Research, and Bone and Joint Institute, The University of Western Ontario, London, Ontario, Canada
| | - Jonathan Kusins
- Roth
- McFarlane Hand and Upper Limb Centre, St. Josephs Health Care, London, Ontario, Canada.,Collaborative Training Program in MSK Health Research, and Bone and Joint Institute, The University of Western Ontario, London, Ontario, Canada.,Department of Mechanical and Materials Engineering, The University of Western Ontario, London, Ontario, Canada
| | - Melanie P Columbus
- Department of Medicine, Division of Emergency Medicine, The University of Western Ontario, London, Ontario, Canada
| | - George S Athwal
- Roth
- McFarlane Hand and Upper Limb Centre, St. Josephs Health Care, London, Ontario, Canada.,Collaborative Training Program in MSK Health Research, and Bone and Joint Institute, The University of Western Ontario, London, Ontario, Canada
| | - Louis M Ferreira
- School of Biomedical Engineering, The University of Western Ontario, London, Ontario, Canada.,Roth
- McFarlane Hand and Upper Limb Centre, St. Josephs Health Care, London, Ontario, Canada.,Collaborative Training Program in MSK Health Research, and Bone and Joint Institute, The University of Western Ontario, London, Ontario, Canada.,Department of Mechanical and Materials Engineering, The University of Western Ontario, London, Ontario, Canada
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23
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24
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Neumann S, Lauenstein-Bosse S. Evaluation of transforming growth factor beta 1 in dogs with osteoarthritis. Open Vet J 2018; 8:386-392. [PMID: 30538928 PMCID: PMC6243209 DOI: 10.4314/ovj.v8i4.6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2018] [Accepted: 09/25/2018] [Indexed: 02/06/2023] Open
Abstract
Osteoarthritis is a common problem in daily veterinary practice with insufficient knowledge about disease mechanism. Because fibrosis is a part of the alteration in the effected joints, we investigated the transforming growth factor beta 1 (TGF-β1) as an important regulation molecule of tissue fibrosis. We chose Osteoarthritis following a cruciate ligament rupture (CLR) because it is a common model of osteoarthritis. A total of 13 healthy dogs and 38 dogs suffering from CLR were included in this prospective study. The concentration of TGF-β1 was measured in synovial fluid using the “Quantikine Human TGF-β1 Immunoassay” (Fa. R & D Systems, Minneapolis, USA). There was a significant difference in the TGF-β1 concentration of the synovial fluid of healthy compared to affected patients (p < 0.001). The synovial TGF-β1 concentration also correlated significantly (p = 0.0147) with the synovial viscosity of the affected patients. No significant correlations could be observed to duration of disease, severity of lameness and degree of joint swelling, but also to joint capsule sickness, osteophyte development and degeneration of joint cartilage. The results of our study show an increased TGF-β1 concentration in knees affected with osteoarthritis as consequence of CLR. So we can conclude that TGF-β1 takes part at the osteoarthritic remodelling process, but different phases of the remodelling process cannot be distinguished by the measurement of TGF-β1.
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Affiliation(s)
- Stephan Neumann
- Institute of Veterinary Medicine, Georg-August University Göttingen, Burckhardtweg 2, D-37077 Göttingen, Germany
| | - Sarah Lauenstein-Bosse
- Institute of Veterinary Medicine, Georg-August University Göttingen, Burckhardtweg 2, D-37077 Göttingen, Germany
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25
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Characterizing human subchondral bone properties using near-infrared (NIR) spectroscopy. Sci Rep 2018; 8:9733. [PMID: 29950563 PMCID: PMC6021410 DOI: 10.1038/s41598-018-27786-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2018] [Accepted: 06/06/2018] [Indexed: 12/16/2022] Open
Abstract
Degenerative joint conditions are often characterized by changes in articular cartilage and subchondral bone properties. These changes are often associated with subchondral plate thickness and trabecular bone morphology. Thus, evaluating subchondral bone integrity could provide essential insights for diagnosis of joint pathologies. This study investigates the potential of optical spectroscopy for characterizing human subchondral bone properties. Osteochondral samples (n = 50) were extracted from human cadaver knees (n = 13) at four anatomical locations and subjected to NIR spectroscopy. The samples were then imaged using micro-computed tomography to determine subchondral bone morphometric properties, including: plate thickness (Sb.Th), trabecular thickness (Tb.Th), volume fraction (BV/TV), and structure model index (SMI). The relationship between the subchondral bone properties and spectral data in the 1st (650–950 nm), 2nd (1100–1350 nm) and 3rd (1600–1870 nm) optical windows were investigated using partial least squares (PLS) regression multivariate technique. Significant correlations (p < 0.0001) and relatively low prediction errors were obtained between spectral data in the 1st optical window and Sb.Th (R2 = 92.3%, error = 7.1%), Tb.Th (R2 = 88.4%, error = 6.7%), BV/TV (R2 = 83%, error = 9.8%) and SMI (R2 = 79.7%, error = 10.8%). Thus, NIR spectroscopy in the 1st tissue optical window is capable of characterizing and estimating subchondral bone properties, and can potentially be adapted during arthroscopy.
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26
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Wu X, Cao L, Li F, Ma C, Liu G, Wang Q. Interleukin-6 from subchondral bone mesenchymal stem cells contributes to the pathological phenotypes of experimental osteoarthritis. Am J Transl Res 2018; 10:1143-1154. [PMID: 29736207 PMCID: PMC5934573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Accepted: 02/23/2018] [Indexed: 06/08/2023]
Abstract
As a main cause of morbidity in the aged population, osteoarthritis (OA) is characterized by cartilage destruction, synovium inflammation, osteophytes, and subchondral bone sclerosis. To date its etiology remains elusive. Recent data highlight an important role of subchondral bone in the onset and progression of OA. Therefore, elucidating the mechanisms underlying abnormal subchondral bone could be of importance in the treatment of OA. Interleukin-6 is a proinflammatory cytokine involved in many physiological and pathological processes. Although in vitro and in vivo studies have indicated that IL-6 is an important cytokine in the physiopathogenesis of OA, its effects on subchondral bone have not been studied in OA animal models. In this study, we aimed to i) investigate the role of IL-6 in the pathological phenotypes of OA subchondral bone MSCs including increase in cell numbers, mineralization disorder and abnormal type I collagen production; ii) explore whether the systemic blockade of IL-6 signaling could alleviate the pathological phenotypes of experimental OA. We found that IL-6 was over-secreted by OA subchondral bone MSCs compared with normal MSCs and IL-6/STAT3 signaling was over-activated in subchondral bone MSCs, which contributed to the pathological phenotypes of OA subchondral bone MSCs. More importantly, systemic inhibition of IL-6/STAT3 signaling with IL-6 antibody or STAT3 inhibitor AG490 decreased the severity of pathological phenotypes of OA subchondral bone MSCs and cartilage lesions in OA. Our findings provide strong evidence for a pivotal role for IL-6 signaling in OA and open up new therapeutic perspectives.
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Affiliation(s)
- Xiaofeng Wu
- Nanjing Medical UniversityNanjing 211166, China
- Department of Trauma Orthopaedic, Shanghai General Hospital of Nanjing Medical UniversityShanghai 200080, China
| | - Lei Cao
- Department of Trauma Orthopaedic, Shanghai General Hospital of Nanjing Medical UniversityShanghai 200080, China
| | - Fan Li
- Department of Trauma Orthopaedic, Shanghai General Hospital of Nanjing Medical UniversityShanghai 200080, China
| | - Chao Ma
- Department of Orthopedic Surgery, Xuzhou Central Hospital, Xuzhou Clinical School of Xuzhou Medical University, The Affiliated Xuzhou Hospital of Medical College of Southeast University, Xuzhou Clinical Medical College of Nanjing University of Chinese MedicineXuzhou 221009, Jiangsu, China
| | - Guangwang Liu
- Department of Orthopedic Surgery, Xuzhou Central Hospital, Xuzhou Clinical School of Xuzhou Medical University, The Affiliated Xuzhou Hospital of Medical College of Southeast University, Xuzhou Clinical Medical College of Nanjing University of Chinese MedicineXuzhou 221009, Jiangsu, China
| | - Qiugen Wang
- Nanjing Medical UniversityNanjing 211166, China
- Department of Trauma Orthopaedic, Shanghai General Hospital of Nanjing Medical UniversityShanghai 200080, China
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27
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Chen Y, Hu Y, Yu YE, Zhang X, Watts T, Zhou B, Wang J, Wang T, Zhao W, Chiu KY, Leung FK, Cao X, Macaulay W, Nishiyama KK, Shane E, Lu WW, Guo XE. Subchondral Trabecular Rod Loss and Plate Thickening in the Development of Osteoarthritis. J Bone Miner Res 2018; 33:316-327. [PMID: 29044705 DOI: 10.1002/jbmr.3313] [Citation(s) in RCA: 86] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/03/2017] [Revised: 10/10/2017] [Accepted: 10/14/2017] [Indexed: 12/21/2022]
Abstract
Developing effective treatment for osteoarthritis (OA), a prevalent and disabling disease, has remained a challenge, primarily because of limited understanding of its pathogenesis and late diagnosis. In the subchondral bone, rapid bone loss after traumatic injuries and bone sclerosis at the advanced stage of OA are well-recognized hallmarks of the disease. Recent studies have further demonstrated the crucial contribution of subchondral bone in the development of OA. However, the microstructural basis of these bone changes has not been examined thoroughly, and the paradox of how abnormal resorption can eventually lead to bone sclerosis remains unanswered. By applying a novel microstructural analysis technique, individual trabecula segmentation (ITS), to micro-computed tomography (μCT) images of human OA knees, we have identified a drastic loss of rod-like trabeculae and thickening of plate-like trabeculae that persisted in all regions of the tibial plateau, underneath both severely damaged and still intact cartilage. The simultaneous reduction in trabecular rods and thickening of trabecular plates provide important insights to the dynamic and paradoxical subchondral bone changes observed in OA. Furthermore, using an established guinea pig model of spontaneous OA, we discovered similar trabecular rod loss and plate thickening that preceded cartilage degradation. Thus, our study suggests that rod-and-plate microstructural changes in the subchondral trabecular bone may play an important role in the development of OA and that advanced microstructural analysis techniques such as ITS are necessary in detecting these early but subtle changes. With emerging high-resolution skeletal imaging modalities such as the high-resolution peripheral quantitative computed tomography (HR-pQCT), trabecular rod loss identified by ITS could potentially be used as a marker in assessing the progression of OA in future longitudinal studies or clinical diagnosis. © 2017 American Society for Bone and Mineral Research.
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Affiliation(s)
- Yan Chen
- Bone Bioengineering Laboratory, Department of Biomedical Engineering, Columbia University, New York, NY, USA.,Department of Orthopedics and Traumatology, The University of Hong Kong, Hong Kong.,Department of Bone and Joint Surgery, the First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Yizhong Hu
- Bone Bioengineering Laboratory, Department of Biomedical Engineering, Columbia University, New York, NY, USA
| | - Y Eric Yu
- Bone Bioengineering Laboratory, Department of Biomedical Engineering, Columbia University, New York, NY, USA
| | - Xingjian Zhang
- Bone Bioengineering Laboratory, Department of Biomedical Engineering, Columbia University, New York, NY, USA
| | - Tezita Watts
- Bone Bioengineering Laboratory, Department of Biomedical Engineering, Columbia University, New York, NY, USA
| | - Bin Zhou
- Bone Bioengineering Laboratory, Department of Biomedical Engineering, Columbia University, New York, NY, USA
| | - Ji Wang
- Bone Bioengineering Laboratory, Department of Biomedical Engineering, Columbia University, New York, NY, USA
| | - Ting Wang
- Department of Orthopedics and Traumatology, The University of Hong Kong, Hong Kong
| | - Weiwei Zhao
- Department of Orthopedics and Traumatology, The University of Hong Kong, Hong Kong
| | - Kwong Yuen Chiu
- Department of Orthopedics and Traumatology, The University of Hong Kong, Hong Kong
| | - Frankie Kl Leung
- Department of Orthopedics and Traumatology, The University of Hong Kong, Hong Kong
| | - Xu Cao
- Department of Orthopedic Surgery, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - William Macaulay
- Department of Orthopedic Surgery, New York University Langone/Hospital for Joint Diseases, New York, NY, USA
| | - Kyle K Nishiyama
- Division of Endocrinology, Department of Medicine, Columbia University, New York, NY, USA
| | - Elizabeth Shane
- Division of Endocrinology, Department of Medicine, Columbia University, New York, NY, USA
| | - William W Lu
- Department of Orthopedics and Traumatology, The University of Hong Kong, Hong Kong
| | - X Edward Guo
- Bone Bioengineering Laboratory, Department of Biomedical Engineering, Columbia University, New York, NY, USA
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28
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Weber A, Chan PMB, Wen C. Do immune cells lead the way in subchondral bone disturbance in osteoarthritis? PROGRESS IN BIOPHYSICS AND MOLECULAR BIOLOGY 2017; 148:21-31. [PMID: 29277342 DOI: 10.1016/j.pbiomolbio.2017.12.004] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2017] [Revised: 12/14/2017] [Accepted: 12/20/2017] [Indexed: 01/06/2023]
Abstract
Osteoarthritis (OA) is a whole-joint disorder, and non-cartilage articular pathologies, e.g. subchondral bone disturbance, contribute substantially to the onset and progression of the disease. In the early stage of OA, abnormal mechanical loading leads to micro-cracks or micro-fractures that trigger a reparative process with angiogenesis and inflammatory response. With the progression of disease, cystic lesion, sclerosis and osteophytosis occur at tissue level, and osteoblast dysfunction at cellular level. Osteoblasts derived from OA sclerotic bone produce increased amount of type I collagen with aberrant Col1A1/A2 ratio and poor mineralization capability. The coupling mechanism of bone resorption with formation is also impaired with elevated osteoclastic activities. All these suggest a view that OA subchondral bone presents a defective fracture repair process in a chronic course. It has been found that T and B cells, the major effectors in the adaptive immunity, take part in the hard callus formation at fracture site in addition to the initial phase of haematoma and inflammation. Infiltration of lymphocytes could interplay with osteoclasts and osteoblasts via a direct physical cell-to-cell contact. Several lines of evidence have consistently shown the involvement of T and B cells in osteoclastogenesis and bone erosion in arthritic joints. Yet the biological link between immune cells and osteoblastic function remains ambiguous. This review will discuss the current knowledge regarding the role of immune cells in bone remodelling, and address its implications in emerging basic and clinical investigations into the pathogenesis and management of subchondral bone pathologies in OA.
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Affiliation(s)
- Adrian Weber
- Department of Biomedical Engineering, Faculty of Engineering, The Hong Kong Polytechnic University, Hung Hom, Hong Kong
| | - Pok Man Boris Chan
- Department of Orthopaedics & Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong
| | - Chunyi Wen
- Department of Biomedical Engineering, Faculty of Engineering, The Hong Kong Polytechnic University, Hung Hom, Hong Kong.
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29
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Burger MG, Steinitz A, Geurts J, Pippenger BE, Schaefer DJ, Martin I, Barbero A, Pelttari K. Ascorbic Acid Attenuates Senescence of Human Osteoarthritic Osteoblasts. Int J Mol Sci 2017; 18:ijms18122517. [PMID: 29186811 PMCID: PMC5751120 DOI: 10.3390/ijms18122517] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Revised: 11/08/2017] [Accepted: 11/20/2017] [Indexed: 12/28/2022] Open
Abstract
The accumulation of senescent cells is implicated in the pathology of several age-related diseases. While the clearance of senescent cells has been suggested as a therapeutic target for patients with osteoarthritis (OA), cellular senescence of bone-resident osteoblasts (OB) remains poorly explored. Since oxidative stress is a well-known inducer of cellular senescence, we here investigated the effect of antioxidant supplementation on the isolation efficiency, expansion, differentiation potential, and transcriptomic profile of OB from osteoarthritic subchondral bone. Bone chips were harvested from sclerotic and non-sclerotic regions of the subchondral bone of human OA joints. The application of 0.1 mM ascorbic acid-2-phosphate (AA) significantly increased the number of outgrowing cells and their proliferation capacity. This enhanced proliferative capacity showed a negative correlation with the amount of senescent cells and was accompanied by decreased expression of reactive oxygen species (ROS) in cultured OB. Expanded cells continued to express differentiated OB markers independently of AA supplementation and demonstrated no changes in their capacity to osteogenically differentiate. Transcriptomic analyses revealed that apoptotic, cell cycle–proliferation, and catabolic pathways were the main pathways affected in the presence of AA during OB expansion. Supplementation with AA can thus help to expand subchondral bone OB in vitro while maintaining their special cellular characteristics. The clearance of such senescent OB could be envisioned as a potential therapeutic target for the treatment of OA.
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Affiliation(s)
- Maximilian G. Burger
- Department of Biomedicine, University of Basel, University Hospital of Basel, 4031 Basel, Switzerland; (M.G.B.); (A.S.); (I.M.); (K.P.)
- Department of Plastic, Reconstructive, Aesthetic and Hand Surgery, University Hospital of Basel, University of Basel, 4031 Basel, Switzerland;
| | - Amir Steinitz
- Department of Biomedicine, University of Basel, University Hospital of Basel, 4031 Basel, Switzerland; (M.G.B.); (A.S.); (I.M.); (K.P.)
- Departments for Orthopedic Surgery and Traumatology, University Hospital of Basel, 4031 Basel, Switzerland
| | - Jeroen Geurts
- Departments Spine Surgery and Biomedical Engineering, University Hospital of Basel, University of Basel, 4031 Basel, Switzerland; (J.G.); (B.E.P.)
| | - Benjamin E. Pippenger
- Departments Spine Surgery and Biomedical Engineering, University Hospital of Basel, University of Basel, 4031 Basel, Switzerland; (J.G.); (B.E.P.)
| | - Dirk J. Schaefer
- Department of Plastic, Reconstructive, Aesthetic and Hand Surgery, University Hospital of Basel, University of Basel, 4031 Basel, Switzerland;
| | - Ivan Martin
- Department of Biomedicine, University of Basel, University Hospital of Basel, 4031 Basel, Switzerland; (M.G.B.); (A.S.); (I.M.); (K.P.)
| | - Andrea Barbero
- Department of Biomedicine, University of Basel, University Hospital of Basel, 4031 Basel, Switzerland; (M.G.B.); (A.S.); (I.M.); (K.P.)
- Correspondence: ; Tel.: +41-61-265-2384
| | - Karoliina Pelttari
- Department of Biomedicine, University of Basel, University Hospital of Basel, 4031 Basel, Switzerland; (M.G.B.); (A.S.); (I.M.); (K.P.)
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Extracellular Vesicles from Adipose-Derived Mesenchymal Stem Cells Downregulate Senescence Features in Osteoarthritic Osteoblasts. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2017; 2017:7197598. [PMID: 29230269 PMCID: PMC5694590 DOI: 10.1155/2017/7197598] [Citation(s) in RCA: 98] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/29/2017] [Accepted: 10/03/2017] [Indexed: 12/25/2022]
Abstract
Osteoarthritis (OA) affects all articular tissues leading to pain and disability. The dysregulation of bone metabolism may contribute to the progression of this condition. Adipose-derived mesenchymal stem cells (ASC) are attractive candidates in the search of novel strategies for OA treatment and exert anti-inflammatory and cytoprotective effects on cartilage. Chronic inflammation in OA is a relevant factor in the development of cellular senescence and joint degradation. In this study, we extend our previous observations of ASC paracrine effects to study the influence of conditioned medium and extracellular vesicles from ASC on senescence induced by inflammatory stress in OA osteoblasts. Our results in cells stimulated with interleukin- (IL-) 1β indicate that conditioned medium, microvesicles, and exosomes from ASC downregulate senescence-associated β-galactosidase activity and the accumulation of γH2AX foci. In addition, they reduced the production of inflammatory mediators, with the highest effect on IL-6 and prostaglandin E2. The control of mitochondrial membrane alterations and oxidative stress may provide a mechanism for the protective effects of ASC in OA osteoblasts. We have also shown that microvesicles and exosomes mediate the paracrine effects of ASC. Our study suggests that correction of abnormal osteoblast metabolism by ASC products may contribute to their protective effects.
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31
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Caso E, Sabiers CC, López-Guillén D, Caso J, Toledano M, Osorio R, Osorio E, Lozano C, Guerado E. Inter-individual gene variants associated with trabecular bone plasticity: A step forward in the personal genomics of degenerative bone disease. Injury 2017; 48 Suppl 6:S12-S25. [PMID: 29162237 DOI: 10.1016/s0020-1383(17)30790-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Continuing tissue destruction in osteoarthrosis is maintained by molecular pathways related to an unbalanced chondrocyte metabolism, the loss of reactive oxygen species (ROS) homeostasis, increase catabolism in a degraded matrix and the limited response to growth factors due to cell aging. Rare deleterious gene variants driving relevant molecular pathways may play a key role in the pathogenesis and genetic control of common diseases and may also influence the common gene variants observed in GWAS. We use molecular profiling technologies based on massive sequencing of genes to interrogate clinical samples for a variety of molecules involved in the pathogenesis pathways of OA and also to derive new insights for drug targeting discovery at an early stage of the disease. By whole-exome sequencing performed in OA patients with extreme phenotypes and in non-related individuals without clinical evidence of OA, the most predominant of the rare gene variants found were non-synonymous single-nucleotide variants (SNV) from exonic DNA regions and with missense functional effects predicting a moderate impact on protein function. A total of 629, 577, and 639 gene variants for the TPF, COA, and ANHNF patients, respectively, were found not to be shared with the 20 non-disease-related individuals. After subtraction of the 306 variants shared among the OA patients, we obtained the individual profiles of 323, 271, and 333 gene variants, for the TPF, COA, and ANHNF patients, respectively. After filtering by the bioinformatics, genetic, and biological criteria established to assess the clinical consequences, comparative analysis of trio sequences using integrative genome visualization tool clearly demonstrate the differences between patients. Analysis of the collagen gene variants identified 78, 20, and 43 genetic collagen variants for the three extreme phenotypes. Rare gene variants encoding for proteins that are less abundant in the trabecular bone matrix, together with those responsible for the control and regulation of bone turnover and plasticity of subchondral trabecular bone, play important roles in OA and help to define the clinical phenotype.
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Affiliation(s)
- Enrique Caso
- Research Unit, Hospital Universitário Costa del Sol, University of Malaga, Marbella, Malaga, Spain.
| | - Cristina C Sabiers
- Research Unit, Hospital Universitário Costa del Sol, University of Malaga, Marbella, Malaga, Spain
| | - Daniel López-Guillén
- Research Unit, Hospital Universitário Costa del Sol, University of Malaga, Marbella, Malaga, Spain
| | - Jaime Caso
- School of Engineering of Information and Communication Technologies, University of Granada, Granada, Spain
| | - Manuel Toledano
- Faculty of Dentistry, Dental Materials Section, University of Granada, Granada, Spain
| | - Raquel Osorio
- Faculty of Dentistry, Dental Materials Section, University of Granada, Granada, Spain
| | - Estrella Osorio
- Faculty of Dentistry, Dental Materials Section, University of Granada, Granada, Spain
| | - Carmen Lozano
- Department of Radiology, Hospital Universitario Costa del Sol, University of Malaga, Malaga, Spain
| | - Enrique Guerado
- Department of Orthopaedic Surgery and Traumatology, Hospital Universitario Costa del Sol, University of Malaga, Malaga, Spain
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32
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Gundry M, Hopkins S, Knapp K. A Review on Bone Mineral Density Loss in Total Knee Replacements Leading to Increased Fracture Risk. Clin Rev Bone Miner Metab 2017; 15:162-174. [PMID: 29213219 PMCID: PMC5698368 DOI: 10.1007/s12018-017-9238-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The link between low bone mineral density (BMD) scores leading to greater fracture risk is well established in the literature; what is not fully understood is the impact of total knee replacements/revisions or arthroplasties on BMD levels. This literature review attempts to answer this question. Several different databases using specific key terms were searched, with additional papers retrieved via bibliographic review. Based on the available evidence, total knee replacements/revisions and arthroplasties lower BMD and thus increase fracture risk. This review also addresses the possible implications of this research and possible options to reduce this risk.
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Affiliation(s)
- M. Gundry
- University of Exeter Medical School, St Luke’s Campus, Heavitree Road, Exeter, EX1 2LU UK
| | - S. Hopkins
- University of Exeter Medical School, St Luke’s Campus, Heavitree Road, Exeter, EX1 2LU UK
| | - K. Knapp
- University of Exeter Medical School, St Luke’s Campus, Heavitree Road, Exeter, EX1 2LU UK
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Martineau X, Abed É, Martel-Pelletier J, Pelletier JP, Lajeunesse D. Alteration of Wnt5a expression and of the non-canonical Wnt/PCP and Wnt/PKC-Ca2+ pathways in human osteoarthritis osteoblasts. PLoS One 2017; 12:e0180711. [PMID: 28777797 PMCID: PMC5544184 DOI: 10.1371/journal.pone.0180711] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Accepted: 06/20/2017] [Indexed: 01/07/2023] Open
Abstract
Objective Clinical and in vitro studies suggest that subchondral bone sclerosis due to abnormal osteoblasts (Ob) is involved in the progression and/or onset of osteoarthritis (OA). Human Ob isolated from sclerotic subchondral OA bone tissue show an altered phenotype, a decreased canonical Wnt/β-catenin signaling pathway (cWnt), and a reduced mineralization in vitro. In addition to the cWnt pathway, at least two non-canonical signaling pathways, the Wnt/PKC and Wnt/PCP pathway have been described. However, there are no reports of either pathway in OA Ob. Here, we studied the two non-canonical pathways in OA Ob and if they influence their phenotype. Methods Human primary subchondral Ob were isolated from the subchondral bone plate of tibial plateaus of OA patients undergoing total knee arthroplasty, or of normal individuals at autopsy. The expression of genes involved in non-canonical Wnt signaling was evaluated by qRT-PCR and their protein production by Western blot analysis. Alkaline phosphatase activity and osteocalcin secretion (OC) were determined with substrate hydrolysis and EIA, respectively. Mineralization levels were evaluated with Alizarin Red Staining, Wnt/PKC and Wnt/PCP pathways by target gene expression and their respective activity using the NFAT and AP-1 luciferase reporter assays. Results OA Ob showed an altered phenotype as illustrated by an increased alkaline phosphatase activity and osteocalcin release compared to normal Ob. The expression of the non-canonical Wnt5a ligand was increased in OA Ob compared to normal. Whereas, the expression of LGR5 was significantly increased in OA Ob compared to normal Ob, the expression of LGR4 was similar. Wnt5a directly stimulated the expression and production of LGR5, contrasting, Wnt5a did not stimulate the expression of LGR4. Wnt5a also stimulated the phosphorylation of both JNK and PKC, as well as the activity of both NFAT and AP-1 transcription factors. The inhibition of Wnt5a expression partially corrects the abnormal mineralization, OC secretion and ALPase activity of OA Ob. Conclusion These data indicate that the alteration of Wnt5a, a non-canonical Wnt signaling activator, is implicated in the modified signalisation and phenotype observed in OA Ob.
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Affiliation(s)
- Xavier Martineau
- Unité de recherche en Arthrose, Centre de recherche du Centre hospitalier de l’Université de Montréal (CRCHUM), Montréal, Québec, Canada
| | - Élie Abed
- Unité de recherche en Arthrose, Centre de recherche du Centre hospitalier de l’Université de Montréal (CRCHUM), Montréal, Québec, Canada
| | - Johanne Martel-Pelletier
- Unité de recherche en Arthrose, Centre de recherche du Centre hospitalier de l’Université de Montréal (CRCHUM), Montréal, Québec, Canada
| | - Jean-Pierre Pelletier
- Unité de recherche en Arthrose, Centre de recherche du Centre hospitalier de l’Université de Montréal (CRCHUM), Montréal, Québec, Canada
| | - Daniel Lajeunesse
- Unité de recherche en Arthrose, Centre de recherche du Centre hospitalier de l’Université de Montréal (CRCHUM), Montréal, Québec, Canada
- * E-mail:
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Abed É, Delalandre A, Lajeunesse D. Beneficial effect of resveratrol on phenotypic features and activity of osteoarthritic osteoblasts. Arthritis Res Ther 2017; 19:151. [PMID: 28666466 PMCID: PMC5493084 DOI: 10.1186/s13075-017-1365-2] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2016] [Accepted: 06/09/2017] [Indexed: 12/22/2022] Open
Abstract
Background Osteoarthritis (OA) is a complex disease, which affects multiple tissues, namely the subchondral bone, articular cartilage and synovial membrane. Alterations of the subchondral bone include an increased, yet under mineralized osteoid matrix, abnormal osteoblast cell phenotype including elevated alkaline phosphatase (ALP) activity, increased release of osteocalcin (OC) and transforming growth factor β-1 (TGF-β1). Previous studies have demonstrated an inhibition of the canonical Wnt signaling (cWnt) pathway in OA osteoblasts (Ob). As resveratrol (RSV) has been shown to upregulate the Wnt signaling pathway in different cell systems, we hypothesized that RSV could be beneficial for OA Ob. Method We prepared primary human Ob using the subchondral bone plate of tibial plateaus of OA patients undergoing total knee arthroplasty, or tibial plateaus of normal individuals at autopsy. Sirtuin 1 (Sirt1) expression in normal and OA subchondral bone tissue was evaluated by immunohistochemical analysis. Expression of genes was evaluated by qRT-PCR and protein production by western blot analysis. ALP activity and osteocalcin secretion were evaluated respectively with substrate hydrolysis and enzyme immunoassay. Mineralization levels were evaluated with alizarin red staining. Wnt/β-catenin signaling was evaluated by target gene expression using the TOPflash TCF/lef luciferase reporter assay and intracellular signaling using β-catenin levels in western blot analysis. Extracellular signal-regulated kinase (Erk)1/2 and the Smad1/5/8 pathways were evaluated by western blot analysis. Results Sirt1 expression and production were reduced in OA subchondral bone tissue compared to normal tissue. RSV upregulated Sirt1 and its activity, and reduced the expression of leptin. RSV increased Erk1/2 phosphorylation in OA Ob; however, it had no effect on Smad 1/5/8 phosphorylation. RSV had little effect on cell proliferation and only slightly affected the Bax/Bcl2 ratio. The expression of Runx2/Cbfa1 and peroxisome proliferator-activated receptor (PPAR)γ were not affected by increasing doses of RSV. The endogenous increased ALP activity and OC release observed in OA Ob compared to normal Ob were partly corrected only for ALP at high RSV levels but not for OC release. In contrast, RSV increased the mineralization of OA Ob. Moreover, whereas Wnt3a stimulates the Wnt/β-catenin pathway in these cells, RSV further increased the response to Wnt3a. Conclusion These data indicate that RSV promotes Sirt1 levels, inhibits the endogenous expression of leptin by OA osteoblasts and can promote the Wnt/β-catenin and Erk1/2 signaling pathways, which are altered in these cells.
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Affiliation(s)
- Élie Abed
- Unité de recherche en Arthrose, Centre de recherche du Centre hospitalier de l'Université de Montréal (CRCHUM), 900, rue Saint-Denis, Montréal, Québec, H2X 0A9, Canada
| | - Aline Delalandre
- Unité de recherche en Arthrose, Centre de recherche du Centre hospitalier de l'Université de Montréal (CRCHUM), 900, rue Saint-Denis, Montréal, Québec, H2X 0A9, Canada
| | - Daniel Lajeunesse
- Unité de recherche en Arthrose, Centre de recherche du Centre hospitalier de l'Université de Montréal (CRCHUM), 900, rue Saint-Denis, Montréal, Québec, H2X 0A9, Canada.
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Maruotti N, Corrado A, Cantatore FP. Osteoblast role in osteoarthritis pathogenesis. J Cell Physiol 2017; 232:2957-2963. [PMID: 28425564 PMCID: PMC5575507 DOI: 10.1002/jcp.25969] [Citation(s) in RCA: 90] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Accepted: 04/19/2017] [Indexed: 01/13/2023]
Abstract
Even if osteoarthritis pathogenesis is still poorly understood, numerous evidences suggest that osteoblasts dysregulation plays a key role in osteoarthritis pathogenesis. An abnormal expression of OPG and RANKL has been described in osteoarthritis osteoblasts, which is responsible for abnormal bone remodeling and decreased mineralization. Alterations in genes expression are involved in dysregulation of osteoblast function, bone remodeling, and mineralization, leading to osteoarthritis development. Moreover, osteoblasts produce numerous transcription factors, growth factors, and other proteic molecules which are involved in osteoarthritis pathogenesis.
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Affiliation(s)
- Nicola Maruotti
- Rheumatology Clinic, Department of Medical and Surgical Sciences, University of Foggia Medical School, Foggia, Italy
| | - Addolorata Corrado
- Rheumatology Clinic, Department of Medical and Surgical Sciences, University of Foggia Medical School, Foggia, Italy
| | - Francesco P Cantatore
- Rheumatology Clinic, Department of Medical and Surgical Sciences, University of Foggia Medical School, Foggia, Italy
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Stock M, Menges S, Eitzinger N, Geßlein M, Botschner R, Wormser L, Distler A, Schlötzer-Schrehardt U, Dietel K, Distler J, Beyer C, Gelse K, Engelke K, Koenders MI, van den Berg W, von der Mark K, Schett G. A Dual Role of Upper Zone of Growth Plate and Cartilage Matrix-Associated Protein in Human and Mouse Osteoarthritic Cartilage: Inhibition of Aggrecanases and Promotion of Bone Turnover. Arthritis Rheumatol 2017; 69:1233-1245. [PMID: 28086000 DOI: 10.1002/art.40042] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Accepted: 01/10/2017] [Indexed: 01/05/2023]
Abstract
OBJECTIVE Cartilage damage and subchondral bone changes are closely connected in osteoarthritis. Nevertheless, how these processes are interlinked is, to date, incompletely understood. This study was undertaken to investigate the mechanistic role of a cartilage-derived protein, upper zone of growth plate and cartilage matrix-associated protein (UCMA), in osteoarthritis-related cartilage and bone changes. METHODS UCMA expression was assessed in healthy and osteoarthritic human and mouse cartilage. For analysis of cartilage and bone changes, osteoarthritis was induced by destabilization of the medial meniscus (DMM) in wild-type (WT) and Ucma-deficient mice. UCMA-collagen interactions, the effect of UCMA on aggrecanase activity, and the impact of recombinant UCMA on osteoclast differentiation were studied in vitro. RESULTS UCMA was found to be overexpressed in human and mouse osteoarthritic cartilage. DMM-triggered cartilage changes, including increased structural damage, proteoglycan loss, and chondrocyte cell death, were aggravated in Ucma-deficient mice compared to WT littermates, thereby demonstrating the potential chondroprotective effects of UCMA. Moreover, UCMA inhibited ADAMTS-dependent aggrecanase activity and directly interacted with cartilage-specific collagen types. In contrast, osteoarthritis-related bone changes were significantly reduced in Ucma-deficient mice, showing less pronounced osteophyte formation and subchondral bone sclerosis. Mechanistically, UCMA directly promoted osteoclast differentiation in vitro. CONCLUSION UCMA appears to link cartilage with bone changes in osteoarthritis by supporting cartilage integrity as an endogenous inhibitor of aggrecanases while also promoting osteoclastogenesis and subchondral bone turnover. Thus, UCMA represents an important link between cartilage and bone in osteoarthritis.
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Affiliation(s)
- Michael Stock
- Friedrich Alexander University of Erlangen-Nürnberg and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Stefanie Menges
- Friedrich Alexander University of Erlangen-Nürnberg and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Nicole Eitzinger
- Friedrich Alexander University of Erlangen-Nürnberg and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Maria Geßlein
- Friedrich Alexander University of Erlangen-Nürnberg and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Renate Botschner
- Friedrich Alexander University of Erlangen-Nürnberg and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Laura Wormser
- Friedrich Alexander University of Erlangen-Nürnberg and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Alfiya Distler
- Friedrich Alexander University of Erlangen-Nürnberg and Universitätsklinikum Erlangen, Erlangen, Germany
| | | | - Katharina Dietel
- Friedrich Alexander University of Erlangen-Nürnberg and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Jörg Distler
- Friedrich Alexander University of Erlangen-Nürnberg and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Christian Beyer
- Friedrich Alexander University of Erlangen-Nürnberg and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Kolja Gelse
- Friedrich Alexander University of Erlangen-Nürnberg and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Klaus Engelke
- Friedrich Alexander University of Erlangen-Nürnberg, Erlangen, Germany
| | | | | | | | - Georg Schett
- Friedrich Alexander University of Erlangen-Nürnberg and Universitätsklinikum Erlangen, Erlangen, Germany
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Upadhyay B, Mo J, Beadsmoore C, Marshall T, Toms A, Buscombe J. Technetium-99m Methylene Diphosphonate Single-photon Emission Computed Tomography/Computed Tomography of the Foot and Ankle. World J Nucl Med 2017; 16:88-100. [PMID: 28553174 PMCID: PMC5436330 DOI: 10.4103/1450-1147.203077] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
The complex anatomy and function of the foot and ankle can make it difficult to determine the cause of symptoms in patients with foot and ankle pathology. Following initial clinical and radiographic assessment, additional imaging with magnetic resonance imaging may be required, which is often seen as the modality of choice. Although sensitive to pathological changes in bone metabolism and vascularity, technetium-99m (Tc-99m) bone scintigraphy often lacks the specificity and resolution required to evaluate the structures of the foot and ankle. Tc-99m methylene diphosphonate single-photon emission computed tomography/computed tomography (SPECT/CT) combines this sensitivity with the superior anatomical detail of CT, enabling better localization of pathological uptake and evaluation of associated structural changes. As a result, SPECT/CT has been growing in popularity for the assessment of patients with foot and ankle pathology where it can provide additional information that may change the initial diagnosis and subsequent management plan. Studies have reported modification of the surgical approach and site of intra-articular local anesthetic injections following SPECT/CT with good results. Interpretation of SPECT/CT studies requires an understanding of the pathological changes that result in increased tracer accumulation in addition to the CT changes that may be seen. This review aims to highlight the advantages of SPECT/CT, potential applications and explain the imaging appearances of common pathologies that may be observed.
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Affiliation(s)
- Bhavin Upadhyay
- Department of Radiology, Norfolk and Norwich University Hospital NHS Foundation Trust, Norwich, UK
| | - Jonathan Mo
- Department of Radiology, Norfolk and Norwich University Hospital NHS Foundation Trust, Norwich, UK
| | - Clare Beadsmoore
- Department of Radiology, Norfolk and Norwich University Hospital NHS Foundation Trust, Norwich, UK
| | - Tom Marshall
- Department of Radiology, Norfolk and Norwich University Hospital NHS Foundation Trust, Norwich, UK
| | - Andoni Toms
- Department of Radiology, Norfolk and Norwich University Hospital NHS Foundation Trust, Norwich, UK
| | - John Buscombe
- Department of Nuclear Medicine, Cambridge University Hospitals, Cambridge, UK
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Cucchiarini M, de Girolamo L, Filardo G, Oliveira JM, Orth P, Pape D, Reboul P. Basic science of osteoarthritis. J Exp Orthop 2016; 3:22. [PMID: 27624438 PMCID: PMC5021646 DOI: 10.1186/s40634-016-0060-6] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Accepted: 09/09/2016] [Indexed: 12/20/2022] Open
Abstract
Osteoarthritis (OA) is a prevalent, disabling disorder of the joints that affects a large population worldwide and for which there is no definitive cure. This review provides critical insights into the basic knowledge on OA that may lead to innovative end efficient new therapeutic regimens. While degradation of the articular cartilage is the hallmark of OA, with altered interactions between chondrocytes and compounds of the extracellular matrix, the subchondral bone has been also described as a key component of the disease, involving specific pathomechanisms controlling its initiation and progression. The identification of such events (and thus of possible targets for therapy) has been made possible by the availability of a number of animal models that aim at reproducing the human pathology, in particular large models of high tibial osteotomy (HTO). From a therapeutic point of view, mesenchymal stem cells (MSCs) represent a promising option for the treatment of OA and may be used concomitantly with functional substitutes integrating scaffolds and drugs/growth factors in tissue engineering setups. Altogether, these advances in the fundamental and experimental knowledge on OA may allow for the generation of improved, adapted therapeutic regimens to treat human OA.
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Affiliation(s)
- Magali Cucchiarini
- Center of Experimental Orthopaedics, Saarland University Medical Center and Saarland University, Kirrbergerstr. Bldg 37, D-66421, Homburg, Germany.
| | - Laura de Girolamo
- Orthopaedic Biotechnology Laboratory, Galeazzi Orthopaedic Institute, Milan, Italy
| | - Giuseppe Filardo
- Orthopaedic and Traumatologic I Clinic, Biomechanics Laboratory, Rizzoli Orthopaedic Institute, University of Bologna, Bologna, Italy
| | - J Miguel Oliveira
- 3B's Research Group - Biomaterials, Biodegradables and Biomimetics, Univ. Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, Avepark - Parque de Ciência e Tecnologia, Zona Industrial da Gandra, Barco GMR, Barco, Guimarães, Portugal
- ICVS/3B's - PT Government Associated Laboratory, Barco, Guimarães, Portugal
| | - Patrick Orth
- Center of Experimental Orthopaedics, Saarland University Medical Center and Saarland University, Kirrbergerstr. Bldg 37, D-66421, Homburg, Germany
- Department of Orthopaedic Surgery, Saarland University Medical Center and Saarland University, Homburg, Saar, Germany
| | - Dietrich Pape
- Department of Orthopaedic Surgery, Centre Hospitalier de Luxembourg, Luxembourg ville, Luxembourg
- Sports Medicine Research Laboratory, Public Research Centre for Health, Luxembourg, Centre Médical de la Fondation Norbert Metz, Luxembourg ville, Luxembourg
| | - Pascal Reboul
- UMR 7365 CNRS-Université de Lorraine, IMoPA, Biopôle de l'Université de Lorraine, Campus Biologie-Santé, Vandoeuvre-lès-Nancy, France
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Mansell J, Cooke M, Read M, Rudd H, Shiel A, Wilkins K, Manso M. Chitinase 3-like 1 expression by human (MG63) osteoblasts in response to lysophosphatidic acid and 1,25-dihydroxyvitamin D3. Biochimie 2016; 128-129:193-200. [DOI: 10.1016/j.biochi.2016.08.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2016] [Accepted: 08/25/2016] [Indexed: 01/05/2023]
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Park DY, Jin LH, Min BH, Kwack KS, An YS, Kim YJ. Subchondral bone scan uptake correlates with articular cartilage degeneration in osteoarthritic knees. Int J Rheum Dis 2016; 20:1393-1402. [PMID: 27454909 DOI: 10.1111/1756-185x.12909] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
AIM The aim of this study was to analyze subchondral bone scan uptake in osteoarthritic knees with reference to subchondral bone microstructure and articular cartilage histology. METHODS This cross-sectional, laboratory study evaluated 123 human distal femoral condyle specimens of 67 patients after joint replacement surgery. All patients were preoperatively examined with bone scan of the knee joint. Specimens were evaluated for cartilage histology and micro-computed tomography analysis of subchondral bone. Data between bone scan, histology and micro-computed tomography were statistically analyzed using either coefficient of correlation, Student's t-test or one-way analysis of variance with Tukey post hoc test. RESULTS Bone scan grading and histological articular cartilage degeneration scores showed significant correlation (r = 0.812, P < 0.001). Both bone scan positive and histologically confirmed osteoarthritis samples showed increase in subchondral trabecular bone volume and thickness, reflected in micro-computed tomography. Overall, positive predictive value (%) of bone scan for osteoarthritic cartilage lesions was 91.9%, and the sensitivity and specificity were 88.3% and 60%, respectively. Histology showed that bone scan has both a high positive predictive and a low negative predictive value for detection of osteoarthritic cartilage lesions. CONCLUSION Bone scan uptake correlated with articular cartilage degeneration in osteoarthritic knees. Bone scan may be a useful diagnostic tool that reflects pathologic changes of cartilage in osteoarthritis.
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Affiliation(s)
- Do Young Park
- Department of Anatomy, Ajou University School of Medicine, Suwon, Korea
| | - Long Hao Jin
- Department of Orthopedic Surgery, Yanbian University Medical School, Yanbian, China.,Cell Therapy Center, Ajou University School of Medicine, Suwon, Korea
| | - Byoung-Hyun Min
- Cell Therapy Center, Ajou University School of Medicine, Suwon, Korea.,Department of Orthopedic Surgery, Ajou University School of Medicine, Suwon, Korea.,Department of Molecular Science and Engineering, Ajou University School of Medicine, Suwon, Korea
| | - Kyu-Sung Kwack
- Department of Radiology, Ajou University School of Medicine, Suwon, Korea
| | - Young-Sil An
- Department of Nuclear Medicine, Ajou University School of Medicine, Suwon, Korea
| | - Young Jick Kim
- Cell Therapy Center, Ajou University School of Medicine, Suwon, Korea
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Ali SA, Al-Jazrawe M, Ma H, Whetstone H, Poon R, Farr S, Naples M, Adeli K, Alman BA. Regulation of Cholesterol Homeostasis by Hedgehog Signaling in Osteoarthritic Cartilage. Arthritis Rheumatol 2016; 68:127-37. [PMID: 26315393 PMCID: PMC4690757 DOI: 10.1002/art.39337] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2015] [Accepted: 08/13/2015] [Indexed: 12/11/2022]
Abstract
Objective With no effective therapies to attenuate cartilage degeneration in osteoarthritis (OA), the result is pain and disability. Activation of hedgehog (HH) signaling causes changes related to the progression of OA, with higher levels of Gli‐mediated transcriptional activation associated with increased disease severity. To elucidate the mechanism through which this occurs, this study sought to identify genes regulated by HH signaling in human OA chondrocytes. Methods Using human OA cartilage samples, microarray analyses were performed to detect changes in gene expression when the HH pathway was modulated. Results were analyzed for differentially expressed genes, grouped into functional networks, and validated in independent samples. To investigate the effects of chondrocyte‐specific sterol accumulation, we generated mice lacking Insig1 and Insig2, which are major negative regulators of cholesterol homeostasis, under Col2a1 regulatory elements. Results HH signaling was found to regulate genes that govern cholesterol homeostasis, and this led to alterations in cholesterol accumulation in chondrocytes. A higher level of Gli‐mediated transcription resulted in accumulation of intracellular cholesterol. In genetically modified mice, chondrocyte‐specific cholesterol accumulation was associated with an OA phenotype. Reducing cholesterol accumulation attenuated the severity of OA in mice in vivo and decreased the expression of proteases in human OA cartilage in vitro. Conclusion HH signaling regulates cholesterol homeostasis in chondrocytes, and intracellular cholesterol accumulation contributes to the severity of OA. Our findings have therapeutic implications, since reduction of HH signaling reversed cholesterol accumulation and statin treatment attenuated cartilage degeneration.
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Affiliation(s)
- Shabana Amanda Ali
- University of Toronto and Hospital for Sick Children, Toronto, Ontario, Canada
| | - Mushriq Al-Jazrawe
- University of Toronto and Hospital for Sick Children, Toronto, Ontario, Canada
| | - Henry Ma
- University of Toronto and Hospital for Sick Children, Toronto, Ontario, Canada
| | | | - Raymond Poon
- Hospital for Sick Children, Toronto, Ontario, Canada
| | - Sarah Farr
- University of Toronto and Hospital for Sick Children, Toronto, Ontario, Canada
| | - Mark Naples
- Hospital for Sick Children, Toronto, Ontario, Canada
| | - Khosrow Adeli
- University of Toronto and Hospital for Sick Children, Toronto, Ontario, Canada
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Hargrave-Thomas E, van Sloun F, Dickinson M, Broom N, Thambyah A. Multi-scalar mechanical testing of the calcified cartilage and subchondral bone comparing healthy vs early degenerative states. Osteoarthritis Cartilage 2015; 23:1755-62. [PMID: 26028136 DOI: 10.1016/j.joca.2015.05.012] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/20/2014] [Revised: 05/15/2015] [Accepted: 05/20/2015] [Indexed: 02/02/2023]
Abstract
OBJECTIVE The calcified cartilage layer is thought to be integral to force transmission between the compliant articular cartilage (AC) above and underlying stiff bone. This study aims to determine how such a stiffness gradient across the calcified cartilage and bone changes with joint degeneration and how different scalar levels of testing are correlated. METHOD Using a bovine model of early osteoarthritis (OA), multiple samples of calcified cartilage on subchondral bone (SB) from sixteen bovine patellae, displaying a range of cartilage states from intact (healthy) to moderately degenerate, were tested using macroscopic three-point bending, microhardness indentation, and nanoindentation. Mechanical properties were correlated to cartilage health and microstructural morphometric measurements obtained from high resolution imaging using Differential Interference Contrast (DIC) Microscopy. RESULTS There was a significant decrease in the moduli obtained from tests done at increasing scalar levels. The macroscale average modulus obtained from three-point bending showed that the SB was 10 times stiffer than the calcified cartilage in healthy tissue, 5 times in tissue displaying mildly degenerate AC and 8 times with moderate degeneration. Microhardness testing of multiple points from the calcified cartilage to the SB revealed that there was a monotonic gradual increase in the mean modulus. The moduli obtained from nanoindentation testing indicated that the SB was about twice the stiffness of the calcified cartilage. CONCLUSION The mechanical transition from calcified cartilage to SB involves a graded continuum of increasing material stiffness. This stiffness gradient is altered in association with early degenerative change in the overlying AC, detectable only at the macro level.
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Affiliation(s)
- E Hargrave-Thomas
- Experimental Tissue Mechanics Laboratory, Department of Chemical and Materials Engineering, University of Auckland, New Zealand
| | - F van Sloun
- Nanomechanics Laboratory, Department of Chemical and Materials Engineering, University of Auckland, New Zealand
| | - M Dickinson
- Nanomechanics Laboratory, Department of Chemical and Materials Engineering, University of Auckland, New Zealand
| | - N Broom
- Experimental Tissue Mechanics Laboratory, Department of Chemical and Materials Engineering, University of Auckland, New Zealand
| | - A Thambyah
- Experimental Tissue Mechanics Laboratory, Department of Chemical and Materials Engineering, University of Auckland, New Zealand.
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Abed E, Bouvard B, Martineau X, Jouzeau JY, Reboul P, Lajeunesse D. Elevated hepatocyte growth factor levels in osteoarthritis osteoblasts contribute to their altered response to bone morphogenetic protein-2 and reduced mineralization capacity. Bone 2015; 75:111-9. [PMID: 25667190 DOI: 10.1016/j.bone.2015.02.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/24/2014] [Revised: 01/24/2015] [Accepted: 02/01/2015] [Indexed: 10/24/2022]
Abstract
PURPOSE Clinical and in vitro studies suggest that subchondral bone sclerosis due to abnormal osteoblasts is involved in the progression of osteoarthritis (OA). Human osteoblasts isolated from sclerotic subchondral OA bone tissue show an altered phenotype, a decreased canonical Wnt/ß-catenin pathway, and a reduced mineralization in vitro as well as in vivo. These alterations were linked with an abnormal response to BMP-2. OA osteoblasts release factors such as the hepatocyte growth factor (HGF) that contribute to cartilage loss whereas chondrocytes do not express HGF. HGF can stimulate BMP-2 expression in human osteoblasts, however, the role of HGF and its effect in OA osteoblasts remains unknown. Here we investigated whether elevated endogenous HGF levels in OA osteoblasts are responsible for their altered response to BMP-2. METHODS We prepared primary human subchondral osteoblasts using the sclerotic medial portion of the tibial plateaus of OA patients undergoing total knee arthroplasty, or from tibial plateaus of normal individuals obtained at autopsy. The expression of HGF was evaluated by qRT-PCR and the protein production by western blot analysis. HGF expression was reduced with siRNA technique whereas its activity was inhibited using the selective inhibitor PHA665752. Alkaline phosphatase activity (ALPase) and osteocalcin release were measured by substrate hydrolysis and EIA respectively. Canonical Wnt/β-catenin signaling (cWnt) was evaluated both by target gene expression using the TOPflash TCF/lef luciferase reporter assay and western blot analysis of β-catenin levels in response to Wnt3a stimulation. Mineralization in response to BMP-2 was evaluated by alizarin red staining. RESULTS The expression of HGF was increased in OA osteoblasts compared to normal osteoblasts and was maintained during their in vitro differentiation. OA osteoblasts released more HGF than normal osteoblasts as assessed by western blot analysis. HGF stimulated the expression of TGF-β1. BMP-2 dose-dependently (1 to 100 ng/ml) stimulated both ALPase and osteocalcin in normal osteoblasts whereas, it inhibited them in OA osteoblasts. HGF-siRNA treatments reversed this response in OA osteoblasts and restored the BMP-2 response. cWnt is reduced in OA osteoblasts compared to normal, and HGF-siRNA treatments increased cWnt in OA osteoblasts almost to normal. Smad1/5/8 phosphorylation in response to BMP-2, which is reduced in OA osteoblasts, was corrected when these cells were treated with PHA665752. The BMP-2-dependent mineralization of OA osteoblasts, which is also reduced compared to normal, was only partially restored by PHA665752 treatment whereas 28 days treatment with HGF reduced the mineralization of normal osteoblasts. CONCLUSION OA osteoblasts expressed more HGF than normal osteoblasts. Increased endogenous HGF production in OA osteoblasts stimulated the expression of TGF-β1 and reduced their response to BMP-2. Inhibiting HGF expression or HGF signaling restored the response to BMP-2 and Smad1/5/8 signaling. In addition, decreased HGF signaling partly corrects the abnormal mineralization of OA osteoblasts while increased HGF prevents the normal mineralization of normal osteoblasts. In summary, we hypothesize that sustained elevated HGF levels in OA osteoblasts drive their abnormal phenotype and is implicated in OA pathophysiology.
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Affiliation(s)
- E Abed
- Unité de recherche en Arthrose, Centre de Recherche du Centre Hospitalier de l'Université de Montréal (CRCHUM), Montréal, Québec, Canada
| | - B Bouvard
- UMR7365 IMoPA, Université de Lorraine/CNRS, Vandœuvre lès Nancy, 54505, France; Service de Rhumatologie, Centre Hospitalier Universitaire (CHU), Angers 49933, France
| | - X Martineau
- Unité de recherche en Arthrose, Centre de Recherche du Centre Hospitalier de l'Université de Montréal (CRCHUM), Montréal, Québec, Canada
| | - J-Y Jouzeau
- UMR7365 IMoPA, Université de Lorraine/CNRS, Vandœuvre lès Nancy, 54505, France; Service de Pharmacologie Clinique et de Toxicologie, Centre Hospitalier Universitaire (CHU), Nancy 54023, France
| | - P Reboul
- UMR7365 IMoPA, Université de Lorraine/CNRS, Vandœuvre lès Nancy, 54505, France
| | - D Lajeunesse
- Unité de recherche en Arthrose, Centre de Recherche du Centre Hospitalier de l'Université de Montréal (CRCHUM), Montréal, Québec, Canada.
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Li G, Yin J, Gao J, Cheng TS, Pavlos NJ, Zhang C, Zheng MH. Subchondral bone in osteoarthritis: insight into risk factors and microstructural changes. Arthritis Res Ther 2014; 15:223. [PMID: 24321104 PMCID: PMC4061721 DOI: 10.1186/ar4405] [Citation(s) in RCA: 491] [Impact Index Per Article: 49.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2013] [Accepted: 12/02/2013] [Indexed: 12/11/2022] Open
Abstract
Osteoarthritis (OA) is a major cause of disability in the adult population. As a
progressive degenerative joint disorder, OA is characterized by cartilage damage,
changes in the subchondral bone, osteophyte formation, muscle weakness, and
inflammation of the synovium tissue and tendon. Although OA has long been viewed as a
primary disorder of articular cartilage, subchondral bone is attracting increasing
attention. It is commonly reported to play a vital role in the pathogenesis of OA.
Subchondral bone sclerosis, together with progressive cartilage degradation, is
widely considered as a hallmark of OA. Despite the increase in bone volume fraction,
subchondral bone is hypomineralized, due to abnormal bone remodeling. Some
histopathological changes in the subchondral bone have also been detected, including
microdamage, bone marrow edema-like lesions and bone cysts. This review summarizes
basic features of the osteochondral junction, which comprises subchondral bone and
articular cartilage. Importantly, we discuss risk factors influencing subchondral
bone integrity. We also focus on the microarchitectural and histopathological changes
of subchondral bone in OA, and provide an overview of their potential contribution to
the progression of OA. A hypothetical model for the pathogenesis of OA is
proposed.
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Kerns JG, Gikas PD, Buckley K, Shepperd A, Birch HL, McCarthy I, Miles J, Briggs TWR, Keen R, Parker AW, Matousek P, Goodship AE. Evidence from Raman spectroscopy of a putative link between inherent bone matrix chemistry and degenerative joint disease. Arthritis Rheumatol 2014; 66:1237-46. [PMID: 24470432 PMCID: PMC4158861 DOI: 10.1002/art.38360] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2013] [Accepted: 01/09/2014] [Indexed: 11/08/2022]
Abstract
OBJECTIVE Osteoarthritis (OA) is a common debilitating disease that results in degeneration of cartilage and bone in the synovial joints. Subtle changes in the molecular structure of the subchondral bone matrix occur and may be associated with cartilage changes. The aim of this study was to explore whether the abnormal molecular changes observed in the matrix of OA subchondral bone can be identified with Raman spectroscopy. METHODS Tibial plateaus from patients undergoing total knee replacement for OA (n = 10) were compared with healthy joints from patients undergoing leg amputation (n = 5; sex- and laterality-matched) and with non-OA cadaveric knee specimens (n = 5; age-matched). The samples were analyzed with Raman spectroscopy, peripheral quantitative computed tomography, and chemical analysis to compare changes in defined load-bearing sites in both the medial and lateral compartments. RESULTS OA subchondral bone matrix changes were detected by Raman spectroscopy. Within each cohort, there was no spectral difference in bone matrix chemistry between the medial and lateral compartments, whereas a significant spectral difference (P < 0.001) was observed between the non-OA and OA specimens. Type I collagen chain ratios were normal in the non-OA specimens but were significantly elevated in the OA specimens. CONCLUSION In comparing the results of Raman spectroscopy with those obtained by other standard techniques, these findings show, for the first time, that subchondral bone changes, or inherent differences, exist in both the medial and lateral (beneath intact cartilage) compartments of OA knees. The development of Raman spectroscopy as a screening tool, based on molecular-specific modifications in bone, would facilitate the identification of clinical disease, including early molecular changes.
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Affiliation(s)
- Jemma G Kerns
- Institute of Orthopaedics and Musculoskeletal Science, University College London, and Royal National Orthopaedic Hospital, Stanmore, UK
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Im GI, Kim MK. The relationship between osteoarthritis and osteoporosis. J Bone Miner Metab 2014; 32:101-9. [PMID: 24196872 DOI: 10.1007/s00774-013-0531-0] [Citation(s) in RCA: 74] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/13/2013] [Accepted: 10/06/2013] [Indexed: 02/04/2023]
Abstract
The relationship between osteoarthritis (OA) and osteoporosis (OP), the two most common skeletal disorders related to aging, is controversial. Previous studies suggest that OA is inversely related to OP when studied cross-sectionally and systematically. However, there are differences in the results depending on the parameter used to define OA. The purpose of this review is to analyze and summarize the literature, and derive possible answers to three key questions along with a brief introduction on underlying mechanisms: (1) Is OA correlated to a high bone mineral density (BMD)? (2) Does OA influence the progression of OP or osteoporotic fractures? (3) Does high BMD affect the incidence and progression of OA? A review of the literature suggests that OA is inversely related to OP in general when studied cross-sectionally and systematically. However, when analyzed in individual bones, the BMD of the appendicular skeleton in OA-affected joints may decrease, particularly in the upper extremities. On whether OA influences bone loss or osteoporotic fractures, differences are observed according to the affected joints. The risk for osteoporotic fracture does not seem to decrease despite a high BMD in patients with OA, probably due to postural instability and muscle strength. Low BMD at the lumbar spine is associated with a lower incidence of knee OA although it does not arrest the progression of knee OA.
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Affiliation(s)
- Gun-Il Im
- Department of Orthopaedics, Dongguk University Ilsan Hospital, Goyang, 410-773, Republic of Korea,
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Abed É, Couchourel D, Delalandre A, Duval N, Pelletier JP, Martel-Pelletier J, Lajeunesse D. Low sirtuin 1 levels in human osteoarthritis subchondral osteoblasts lead to abnormal sclerostin expression which decreases Wnt/β-catenin activity. Bone 2014; 59:28-36. [PMID: 24184155 DOI: 10.1016/j.bone.2013.10.020] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2013] [Revised: 10/21/2013] [Accepted: 10/23/2013] [Indexed: 11/21/2022]
Abstract
INTRODUCTION Wnt/β-catenin (cWnt) signaling plays a key role in osteogenesis by promoting the differentiation and mineralization of osteoblasts, activities altered in human osteoarthritic subchondral osteoblast (OA Ob). Sclerostin (SOST) has been shown to alter cWnt signaling. Sirtuin 1 (SIRT1) acts as a novel bone regulator and represses SOST levels in Ob. However the role of SIRT1 and SOST in OA Ob remains unknown. Herein, we explored the role played by SIRT1 and SOST on the abnormal mineralization and cWnt signaling in OA Ob. METHODS Primary human normal and OA Ob were prepared from tibial plateaus. SOST levels were evaluated by immunohistochemistry, the expression and production of genes by qRT-PCR and WB analysis. Their inhibitions were performed using siRNA. cWnt signaling was measured by the TOPflash TCF/lef luciferase reporter assay. Mineralization was determined by alizarin red staining. RESULTS SOST levels were significantly increased in OA Ob compared to normal and were linked with elevated TGF-β1 levels in these cells. SIRT1 expression was significantly reduced in OA Ob compared to normal yet not modified by TGF-β1. Specific inhibition of SIRT1 increased TGF-β1 and SOST expressions in OA Ob, while stimulating SIRT1 activity with β-Nicotinamide mononucleotide reduced the expression of TGF-β1 and SOST, and increased mineralization in OA Ob. Resveratrol also reduced SOST expression in OA Ob. Reduced cWnt signaling, β-catenin levels, and mineralization in OA Ob were all corrected via reducing SOST expression. CONCLUSION These data indicate that high level of SOST is responsible, in part, for the reduced cWnt and mineralization of human OA Ob, which in turn is linked with abnormal SIRT1 levels in these pathological cells.
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Affiliation(s)
- Élie Abed
- Unité de recherche en arthrose, Centre de Recherche du Centre Hospitalier de l'Université de Montréal (CRCHUM), Hôpital Notre-Dame, Montréal, Québec H2L 4M1, Canada
| | - Denis Couchourel
- Unité de recherche en arthrose, Centre de Recherche du Centre Hospitalier de l'Université de Montréal (CRCHUM), Hôpital Notre-Dame, Montréal, Québec H2L 4M1, Canada
| | - Aline Delalandre
- Unité de recherche en arthrose, Centre de Recherche du Centre Hospitalier de l'Université de Montréal (CRCHUM), Hôpital Notre-Dame, Montréal, Québec H2L 4M1, Canada
| | - Nicholas Duval
- Unité de recherche en arthrose, Centre de Recherche du Centre Hospitalier de l'Université de Montréal (CRCHUM), Hôpital Notre-Dame, Montréal, Québec H2L 4M1, Canada
| | - Jean-Pierre Pelletier
- Unité de recherche en arthrose, Centre de Recherche du Centre Hospitalier de l'Université de Montréal (CRCHUM), Hôpital Notre-Dame, Montréal, Québec H2L 4M1, Canada
| | - Johanne Martel-Pelletier
- Unité de recherche en arthrose, Centre de Recherche du Centre Hospitalier de l'Université de Montréal (CRCHUM), Hôpital Notre-Dame, Montréal, Québec H2L 4M1, Canada
| | - Daniel Lajeunesse
- Unité de recherche en arthrose, Centre de Recherche du Centre Hospitalier de l'Université de Montréal (CRCHUM), Hôpital Notre-Dame, Montréal, Québec H2L 4M1, Canada.
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Lajeunesse D, Massicotte F, Pelletier JP, Martel-Pelletier J. Subchondral bone sclerosis in osteoarthritis: not just an innocent bystander. Mod Rheumatol 2014; 13:7-14. [PMID: 24387110 DOI: 10.3109/s101650300001] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract Osteoarthritis (OA) is considered to be a complex illness in which the tissues of the joint play a significant role in the initiation and/or progression of the pathophysiology. We still do not completely understand what initiates the degradation and loss of cartilage. However, it has been suggested that increased catabolism due to elevated cytokines and growth factors in OA joints plays a significant role. Recent evidence suggests a key role for the subchondral bone tissue in the progression and/or initiation of OA. Indeed, the subchondral bone tissue produces a number of similar proinflammatory cytokines, and growth factors are involved in cartilage tissue remodeling. Interestingly, studies have shown the presence of clefts or channels in the tidemark that appears early in OA, indicating a possible way to traffic cytokines and growth factors from the subchondral compartment to the overlying cartilage. Therefore, it is possible that certain bone-derived products drive cartilage metabolism. Potential candidates include insulin-like growth factor-1 (IGF-1), transforming growth factor-β (TGF-β) interleukin 1β (IL-1β), and interleukin-6 (IL-6). Demonstrating that the subchondral bone plays a role in the initiation of OA would greatly contribute to furthering our knowledge of this pathology and provide new insights for therapeutic approaches.
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Affiliation(s)
- D Lajeunesse
- Unité de recherche en Arthrose, Centre Hospitalier de l'Université de Montréal, Hôpital Notre-Dame , 1560 rue Sherbrooke Est, Montréal, Québec H2L 4M1 , Canada
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van Meer BL, Waarsing JH, van Eijsden WA, Meuffels DE, van Arkel ERA, Verhaar JAN, Bierma-Zeinstra SMA, Reijman M. Bone mineral density changes in the knee following anterior cruciate ligament rupture. Osteoarthritis Cartilage 2014; 22:154-61. [PMID: 24269632 DOI: 10.1016/j.joca.2013.11.005] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/23/2013] [Revised: 10/02/2013] [Accepted: 11/09/2013] [Indexed: 02/02/2023]
Abstract
OBJECTIVE The pathophysiology of anterior cruciate ligament (ACL) rupture leading to knee osteoarthritis (OA) remains largely unknown. It seems that bone loss occurs after ACL rupture. The purpose of our study was to determine bone mineral density (BMD) changes in the knee after ACL rupture during 2-year follow-up period and to compare BMD changes between the injured and healthy contralateral knee. DESIGN Patients were included in an observational prospective follow-up study within 6 months after ACL trauma and evaluated for 2 years. Patients were treated operatively or non-operatively. At baseline and at the one- and 2-year follow-ups, BMD was measured in six regions of the tibia and femur for both knees (medial, central, lateral) using a Dual-energy X-ray Absorptiometry (DXA) scanner. RESULTS One hundred forty-one patients were included, with the following characteristics: 66% were male, median age at baseline was 25.3 (inter-quartile range 11.3) years, and 63% were treated operatively. After 1 year, BMD was significantly lower in all regions of the injured knee of the operatively treated patients compared to baseline. After 2 years, BMD was significantly increased, but remained lower than the baseline levels. In all regions for all measurements, the mean BMD was significantly lower in the injured knee than in the healthy contralateral knee. CONCLUSIONS During a 2-year follow-up period after ACL rupture, the BMD level in the injured knee was found to be lower than in the healthy contralateral knee. In operatively treated patients, the BMD decreased in the first year and increased in the second follow-up year.
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Affiliation(s)
- B L van Meer
- Department of Orthopedic Surgery, Erasmus MC, University Medical Center, Rotterdam, The Netherlands.
| | - J H Waarsing
- Department of Orthopedic Surgery, Erasmus MC, University Medical Center, Rotterdam, The Netherlands
| | - W A van Eijsden
- Department of Orthopedic Surgery, Erasmus MC, University Medical Center, Rotterdam, The Netherlands
| | - D E Meuffels
- Department of Orthopedic Surgery, Erasmus MC, University Medical Center, Rotterdam, The Netherlands
| | - E R A van Arkel
- Department of Orthopedic Surgery, Medical Center Haaglanden, The Hague, The Netherlands
| | - J A N Verhaar
- Department of Orthopedic Surgery, Erasmus MC, University Medical Center, Rotterdam, The Netherlands
| | - S M A Bierma-Zeinstra
- Department of Orthopedic Surgery, Erasmus MC, University Medical Center, Rotterdam, The Netherlands; Department of General Practice, Erasmus MC, University Medical Center, Rotterdam, The Netherlands
| | - M Reijman
- Department of Orthopedic Surgery, Erasmus MC, University Medical Center, Rotterdam, The Netherlands
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Karsdal MA, Bay-Jensen AC, Lories RJ, Abramson S, Spector T, Pastoureau P, Christiansen C, Attur M, Henriksen K, Goldring SR, Kraus V. The coupling of bone and cartilage turnover in osteoarthritis: opportunities for bone antiresorptives and anabolics as potential treatments? Ann Rheum Dis 2013; 73:336-48. [PMID: 24285494 DOI: 10.1136/annrheumdis-2013-204111] [Citation(s) in RCA: 153] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Osteoarthritis (OA) is the most common form of arthritic disease, and a major cause of disability and impaired quality of life in the elderly. OA is a complex disease of the entire joint, affecting bone, cartilage and synovium that thereby presents multiple targets for treatment. This manuscript will summarise emerging observations from cell biology, preclinical and preliminary clinical trials that elucidate interactions between the bone and cartilage components in particular. Bone and cartilage health are tightly associated. Ample evidence has been found for bone changes during progression of OA including, but not limited to, increased turnover in the subchondral bone, undermineralisation of the trabecular structure, osteophyte formation, bone marrow lesions and sclerosis of the subchondral plate. Meanwhile, a range of investigations has shown positive effects on cartilage health when bone resorption is suppressed, or deterioration of the cartilage when resorption is increased. Known bone therapies, namely oestrogens, selective oestrogen receptor modifiers (SERMs), bisphosphonates, strontium ranelate, calcitonin and parathyroid hormone, might prove useful for treating two critical tissue components of the OA joint, the bone and the cartilage. An optimal treatment for OA likely targets at least these two tissue components. The patient subgroups for whom these therapies are most appropriate have yet to be fully defined but would likely include, at a minimum, those with high bone turnover.
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