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Dietrich-Zagonel F, Alim MA, Beckman LB, Eliasson P. Dexamethasone treatment influences tendon healing through altered resolution and a direct effect on tendon cells. Sci Rep 2024; 14:15304. [PMID: 38961188 PMCID: PMC11222440 DOI: 10.1038/s41598-024-66038-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Accepted: 06/26/2024] [Indexed: 07/05/2024] Open
Abstract
Inflammation, corticosteroids, and loading all affect tendon healing, with an interaction between them. However, underlying mechanisms behind the effect of corticosteroids and the interaction with loading remain unclear. The aim of this study was to investigate the role of dexamethasone during tendon healing, including specific effects on tendon cells. Rats (n = 36) were randomized to heavy loading or mild loading, the Achilles tendon was transected, and animals were treated with dexamethasone or saline. Gene and protein analyses of the healing tendon were performed for extracellular matrix-, inflammation-, and tendon cell markers. We further tested specific effects of dexamethasone on tendon cells in vitro. Dexamethasone increased mRNA levels of S100A4 and decreased levels of ACTA2/α-SMA, irrespective of load level. Heavy loading + dexamethasone reduced mRNA levels of FN1 and TenC (p < 0.05), while resolution-related genes were unaltered (p > 0.05). In contrast, mild loading + dexamethasone increased mRNA levels of resolution-related genes ANXA1, MRC1, PDPN, and PTGES (p < 0.03). Altered protein levels were confirmed in tendons with mild loading. Dexamethasone treatment in vitro prevented tendon construct formation, increased mRNA levels of S100A4 and decreased levels of SCX and collagens. Dexamethasone during tendon healing appears to act through immunomodulation by promoting resolution, but also through an effect on tendon cells.
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Affiliation(s)
- Franciele Dietrich-Zagonel
- Department of Biomedical and Clinical Sciences, Faculty of Medicine and Health Science, Linköping University, 581 83, Linköping, Sweden
| | - Md Abdul Alim
- Department of Biomedical and Clinical Sciences, Faculty of Medicine and Health Science, Linköping University, 581 83, Linköping, Sweden
- Division of Immunology, Department of Pathology, University of Cambridge, Cambridge, UK
| | - Leo Bon Beckman
- Department of Biomedical and Clinical Sciences, Faculty of Medicine and Health Science, Linköping University, 581 83, Linköping, Sweden
| | - Pernilla Eliasson
- Department of Biomedical and Clinical Sciences, Faculty of Medicine and Health Science, Linköping University, 581 83, Linköping, Sweden.
- Department of Orthopaedics, Sahlgrenska University Hospital, Länsmansgatan 28, 431 80, Mölndal, Sweden.
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2
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Iwasaki N, Roldo M, Karali A, Blunn G. In vitro development of a muscle-tendon junction construct using decellularised extracellular matrix: Effect of cyclic tensile loading. BIOMATERIALS ADVANCES 2024; 161:213873. [PMID: 38692180 DOI: 10.1016/j.bioadv.2024.213873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Revised: 04/10/2024] [Accepted: 04/24/2024] [Indexed: 05/03/2024]
Abstract
The muscle tendon junction (MTJ) plays a crucial role in transmitting the force generated by muscles to the tendon and then to the bone. Injuries such as tears and strains frequently happen at the MTJ, where the regenerative process is limited due to poor vascularization and the complex structure of the tissue. Current solutions for a complete tear at the MTJ have not been successful and therefore, the development of a tissue-engineered MTJ may provide a more effective treatment. In this study, decellularised extracellular matrix (DECM) derived from sheep MTJ was used to provide a scaffold for the MTJ with the relevant mechanical properties and differentiation cues such as the relase of growth factors. Human mesenchymal stem cells (MSCs) were seeded on DECM and 10 % cyclic strain was applied using a bioreactor. MSCs cultured on DECM showed significantly higher gene and protein expression of MTJ markers such as collagen 22, paxillin and talin, than MSCs in 2D culture. Although collagen 22 protein expression was higher in the cells with strain than without strain, reduced gene expression of other MTJ markers was observed when the strain was applied. DECM combined with 10 % strain enhanced myogenic differentiation, while tenogenic differentiation was reduced when compared to static cultures of MSCs on DECM. For the first time, these results showed that DECM derived from the MTJ can induce MTJ marker gene and protein expression by MSCs, however, the effect of strain on the MTJ development in DECM culture needs further investigation.
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Affiliation(s)
- Nodoka Iwasaki
- School of Pharmacy and Biomedical Sciences, University of Portsmouth, Portsmouth, UK.
| | - Marta Roldo
- School of Pharmacy and Biomedical Sciences, University of Portsmouth, Portsmouth, UK
| | - Aikaterina Karali
- School of Mechanical and Design Engineering, University of Portsmouth, Portsmouth, UK
| | - Gordon Blunn
- School of Pharmacy and Biomedical Sciences, University of Portsmouth, Portsmouth, UK
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3
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Trotta MC, Itro A, Lepre CC, Russo M, Guida F, Moretti A, Braile A, Tarantino U, D’Amico M, Toro G. Effects of adipose-derived mesenchymal stem cell conditioned medium on human tenocytes exposed to high glucose. Ther Adv Musculoskelet Dis 2024; 16:1759720X231214903. [PMID: 38204801 PMCID: PMC10775729 DOI: 10.1177/1759720x231214903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Accepted: 10/26/2023] [Indexed: 01/12/2024] Open
Abstract
Introduction Diabetic tendinopathy is a common invalidating and challenging disease that may be treated using stem cells. However, the effects of adipose-derived mesenchymal stem cell conditioned medium (ASC-CM) in diabetic tendinopathy have never been explored. Objectives The present study evaluated the effects of ASC-CM on morphology, cell viability, structure, and scratch wound closure of human tenocytes (HTNC) exposed to high glucose (HG). Design Experimental study. Methods HTNC were exposed to HG (25 mM) for 7, 14 and 21 days with or without ASC-CM for the last 24 h. CM was collected from 4 × 105 ASCs, centrifuged for 10 min at 200 g and sterilized with 0.22 μm syringe filter. Results At 7 days, HG-HTNC had decreased cell viability [72 ± 2%, p < 0.01 versus normal glucose (NG)] compared to NG-HTNC (90 ± 5%). A further decrement was detected after 14 and 21 days (60 ± 4% and 60 ± 5%, both, p < 0.01 versus NG and p < 0.01 versus HG7). While NG-HTNC evidenced a normal fibroblast cell-like elongated morphology, HG-HTNC showed increased cell roundness. In contrast, HG-HTNC exposed to ASC-CM showed a significant increase in cell viability, an improved cell morphology and higher scratch wound closure at all HG time points. Moreover, the exposure to ASC-CM significantly increased thrombospondin 1 and transforming growth factor beta 1 (TGF-β1) content in HG-HTNC. The TGF-β1 elevation was paralleled by higher Collagen I and Vascular Endothelial Growth Factor in HG-HTNC. Conclusion ASC-CM may restore the natural morphology, cell viability and structure of HTNC, promoting their scratch wound closure through TGF-β1 increase.
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Affiliation(s)
- Maria Consiglia Trotta
- Department of Experimental Medicine, University of Campania ‘Luigi Vanvitelli’, Naples, Italy
| | - Annalisa Itro
- PhD Course in Translational Medicine, University of Campania ‘Luigi Vanvitelli’, Naples, Italy
| | - Caterina Claudia Lepre
- Department of Experimental Medicine, University of Campania ‘Luigi Vanvitelli’, Naples, Italy
| | - Marina Russo
- Department of Experimental Medicine, University of Campania ‘Luigi Vanvitelli’, Naples, Italy
| | - Francesca Guida
- Department of Experimental Medicine, University of Campania ‘Luigi Vanvitelli’, Naples, Italy
| | - Antimo Moretti
- Multidisciplinary Department of Medical, Surgical and Dental Sciences, University of Campania ‘Luigi Vanvitelli’, Naples, Italy
| | - Adriano Braile
- Multidisciplinary Department of Medical, Surgical and Dental Sciences, University of Campania ‘Luigi Vanvitelli’, Naples, Italy
| | - Umberto Tarantino
- Department of Clinical Sciences and Translational Medicine, University of Rome Tor Vergata, Rome, Italy
- Caterina ClaudiaLepre is also affiliated to PhD Course in Translational Medicine, University of Campania ‘Luigi Vanvitell’, Naples, Italy
| | - Michele D’Amico
- Department of Experimental Medicine, University of Campania ‘Luigi Vanvitelli’, Naples, Italy
| | - Giuseppe Toro
- Multidisciplinary Department of Medical, Surgical and Dental Sciences, University of Campania ‘Luigi Vanvitelli’, Via L. De Crecchio 6, Naples 80138, Italy
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Enhancement of Tendon Repair Using Tendon-Derived Stem Cells in Small Intestinal Submucosa via M2 Macrophage Polarization. Cells 2022; 11:cells11172770. [PMID: 36078178 PMCID: PMC9454771 DOI: 10.3390/cells11172770] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 07/08/2022] [Accepted: 07/10/2022] [Indexed: 11/17/2022] Open
Abstract
(1) Background: Reconstruction of Achilles tendon defects and prevention of postoperative tendon adhesions were two serious clinical problems. In the treatment of Achilles tendon defects, decellularized matrix materials and mesenchymal stem cells (MSCs) were thought to address both problems. (2) Methods: In vitro, cell adhesion, proliferation, and tenogenic differentiation of tendon-derived stem cells (TDSCs) on small intestinal submucosa (SIS) were evaluated. RAW264.7 was induced by culture medium of TDSCs and TDSCs–SIS scaffold groups. A rat Achilles tendon defect model was used to assess effects on tendon regeneration and antiadhesion in vivo. (3) Results: SIS scaffold facilitated cell adhesion and tenogenic differentiation of TDSCs, while SIS hydrogel coating promoted proliferation of TDSCs. The expression of TGF-β and ARG-1 in the TDSCs-SIS scaffold group were higher than that in the TDSCs group on day 3 and 7. In vivo, the tendon regeneration and antiadhesion capacity of the implanted TDSCs–SIS scaffold was significantly enhanced. The expression of CD163 was significantly highest in the TDSCs–SIS scaffold group; meanwhile, the expression of CD68 decreased more significantly in the TDSCs–SIS scaffold group than the other two groups. (4) Conclusion: This study showed that biologically prepared SIS scaffolds synergistically promote tendon regeneration with TDSCs and achieve antiadhesion through M2 polarization of macrophages.
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Johannsen F, Olesen JL, Øhlenschläger TF, Lundgaard-Nielsen M, Cullum CK, Jakobsen AS, Rathleff MS, Magnusson PS, Kjær M. Effect of Ultrasonography-Guided Corticosteroid Injection vs Placebo Added to Exercise Therapy for Achilles Tendinopathy: A Randomized Clinical Trial. JAMA Netw Open 2022; 5:e2219661. [PMID: 35816306 PMCID: PMC9274322 DOI: 10.1001/jamanetworkopen.2022.19661] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Accepted: 05/14/2022] [Indexed: 11/18/2022] Open
Abstract
Importance Corticosteroid injections and exercise therapy are commonly used to treat chronic midportion Achilles tendinopathy, but the evidence for this combination is limited. Objective To investigate the effect of corticosteroid injection and exercise therapy compared with placebo injection and exercise therapy for patients with Achilles tendinopathy. Design, Setting, and Participants This was a participant-blinded, physician-blinded, and assessor-blinded randomized clinical trial of patients with Achilles tendinopathy verified by ultrasonography. Assessment of pain and function were conducted at baseline and at 1, 2, 3, 6, 12, and 24 months. Patients were recruited from a university medical clinic and a private rheumatology clinic in Denmark between April 2016 and September 2018. Data analysis was performed from June to September 2021. Interventions Corticosteroid injection and placebo injection were performed with ultrasonography guidance. Exercise therapy was based on previous trials and consisted of 3 exercises done every second day. Main Outcomes and Measures The primary outcome was the Victorian Institute of Sports Assessment-Achilles (VISA-A) score (range, 1-100, with 100 representing no symptoms) at 6 months. Secondary outcomes included pain measured using a 100-mm Visual Analog Scale for morning pain and pain during exercise (with higher scores indicating worse pain), global assessment (Likert scale), and tendon thickness. Results A total of 100 patients were included, with 52 randomized to placebo (mean age, 46 years [95% CI, 44-48 years]; 32 men [62%]) and 48 randomized to corticosteroid injection (mean age, 47 years [95% CI, 45-49 years]; 28 men [58%]). Patients in the 2 groups had similar height (mean [SD], 177 [8] cm), weight (mean [SD], 79 [12] kg), and VISA-A score (mean [SD], 46 [18]) at baseline. The group receiving exercise therapy combined with corticosteroid injections had a 17.7-point (95% CI, 8.4-27.0 points; P < .001) larger improvement in VISA-A score compared with patients receiving exercise therapy combined with placebo injections at 6 months. No severe adverse events were observed in either group, and there was no deterioration in the long term (2-year follow-up). Conclusions and Relevance Corticosteroid injections combined with exercise therapy were associated with better outcomes in the treatment of Achilles tendinopathy compared with placebo injections and exercise therapy. A combination of exercise therapy and corticosteroid injection should be considered in the management of long-standing Achilles tendinopathy. Trial Registration ClinicalTrials.gov Identifier: NCT02580630.
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Affiliation(s)
- Finn Johannsen
- Institute of Sports Medicine, Department of Orthopedic Surgery M, Bispebjerg Hospital, Copenhagen, Denmark
| | - Jens Lykkegaard Olesen
- Institute of Sports Medicine, Department of Orthopedic Surgery M, Bispebjerg Hospital, Copenhagen, Denmark
- Center for General Practice at Aalborg University, Aalborg University, Aalborg, Denmark
| | | | | | - Camilla Kjaer Cullum
- Department of Occupational Therapy and Physiotherapy, Bispebjerg Hospital, Copenhagen, Denmark
| | - Anna Svarre Jakobsen
- Center for Rheumatology and Spine Diseases, Centre for Head and Orthopaedics, Rigshospitalet, Glostrup, Denmark
| | - Michael Skovdal Rathleff
- Center for General Practice at Aalborg University, Aalborg University, Aalborg, Denmark
- Department of Occupational Therapy and Physiotherapy, Department of Clinical Medicine, Aalborg University Hospital, Aalborg, Denmark
- Department of Health Science and Technology, Aalborg University, Aalborg, Denmark
| | - Peter Stig Magnusson
- Institute of Sports Medicine, Department of Orthopedic Surgery M, Bispebjerg Hospital, Copenhagen, Denmark
| | - Michael Kjær
- Institute of Sports Medicine, Department of Orthopedic Surgery M, Bispebjerg Hospital, Copenhagen, Denmark
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6
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Nakamichi R, Ma S, Nonoyama T, Chiba T, Kurimoto R, Ohzono H, Olmer M, Shukunami C, Fuku N, Wang G, Morrison E, Pitsiladis YP, Ozaki T, D'Lima D, Lotz M, Patapoutian A, Asahara H. The mechanosensitive ion channel PIEZO1 is expressed in tendons and regulates physical performance. Sci Transl Med 2022; 14:eabj5557. [PMID: 35648809 DOI: 10.1126/scitranslmed.abj5557] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
How mechanical stress affects physical performance via tendons is not fully understood. Piezo1 is a mechanosensitive ion channel, and E756del PIEZO1 was recently found as a gain-of-function variant that is common in individuals of African descent. We generated tendon-specific knock-in mice using R2482H Piezo1, a mouse gain-of-function variant, and found that they had higher jumping abilities and faster running speeds than wild-type or muscle-specific knock-in mice. These phenotypes were associated with enhanced tendon anabolism via an increase in tendon-specific transcription factors, Mohawk and Scleraxis, but there was no evidence of changes in muscle. Biomechanical analysis showed that the tendons of R2482H Piezo1 mice were more compliant and stored more elastic energy, consistent with the enhancement of jumping ability. These phenotypes were replicated in mice with tendon-specific R2482H Piezo1 replacement after tendon maturation, indicating that PIEZO1 could be a target for promoting physical performance by enhancing function in mature tendon. The frequency of E756del PIEZO1 was higher in sprinters than in population-matched nonathletic controls in a small Jamaican cohort, suggesting a similar function in humans. Together, this human and mouse genetic and physiological evidence revealed a critical function of tendons in physical performance, which is tightly and robustly regulated by PIEZO1 in tenocytes.
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Affiliation(s)
- Ryo Nakamichi
- Department of Molecular Medicine, Scripps Research, 10550 North Torrey Pines Road, MBB-102, La Jolla, CA 92037, USA.,Department of Systems BioMedicine, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-Ku, Tokyo 113-8510, Japan.,Department of Orthopaedic Surgery, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama 700-8558, Japan
| | - Shang Ma
- Howard Hughes Medical Institute, Department of Neuroscience, Dorris Neuroscience Center, Scripps Research, La Jolla, CA, 92037, USA.,Howard Hughes Medical Institute, Chevy Chase, MD 20815-6789, USA
| | - Takayuki Nonoyama
- Faculty of Advanced Life Science and Global Station for Soft Matter, Global Institution for Collaborative Research and Education (GSS, GI-CoRE), Hokkaido University, Sapporo 001-0021, Japan
| | - Tomoki Chiba
- Department of Systems BioMedicine, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-Ku, Tokyo 113-8510, Japan
| | - Ryota Kurimoto
- Department of Systems BioMedicine, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-Ku, Tokyo 113-8510, Japan
| | - Hiroki Ohzono
- Department of Molecular Medicine, Scripps Research, 10550 North Torrey Pines Road, MBB-102, La Jolla, CA 92037, USA
| | - Merissa Olmer
- Department of Molecular Medicine, Scripps Research, 10550 North Torrey Pines Road, MBB-102, La Jolla, CA 92037, USA
| | - Chisa Shukunami
- Department of Molecular Biology and Biochemistry and Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima 734-8553, Japan
| | - Noriyuki Fuku
- Graduate School of Health and Sports Science, Juntendo University, Chiba 270-1965, Japan
| | - Guan Wang
- School of Sport and Health Sciences, University of Brighton, Brighton BN2 4AT, UK.,Centre for Regenerative Medicine and Devices, University of Brighton, Brighton BN2 4AT, UK
| | - Errol Morrison
- National Commission on Science and Technology, PCJ Building, 36 Trafalgar Road, Kingston 10, Jamaica
| | - Yannis P Pitsiladis
- School of Sport and Health Sciences, University of Brighton, Brighton BN2 4AT, UK.,Centre of Stress and Age-related Disease, University of Brighton, Brighton BN2 4AT, UK
| | - Toshifumi Ozaki
- Department of Orthopaedic Surgery, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama 700-8558, Japan
| | - Darryl D'Lima
- Department of Molecular Medicine, Scripps Research, 10550 North Torrey Pines Road, MBB-102, La Jolla, CA 92037, USA
| | - Martin Lotz
- Department of Molecular Medicine, Scripps Research, 10550 North Torrey Pines Road, MBB-102, La Jolla, CA 92037, USA
| | - Ardem Patapoutian
- Howard Hughes Medical Institute, Department of Neuroscience, Dorris Neuroscience Center, Scripps Research, La Jolla, CA, 92037, USA.,Howard Hughes Medical Institute, Chevy Chase, MD 20815-6789, USA
| | - Hiroshi Asahara
- Department of Molecular Medicine, Scripps Research, 10550 North Torrey Pines Road, MBB-102, La Jolla, CA 92037, USA.,Department of Systems BioMedicine, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-Ku, Tokyo 113-8510, Japan
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7
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Rampin A, Skoufos I, Raghunath M, Tzora A, Diakakis N, Prassinos N, Zeugolis DI. Allogeneic Serum and Macromolecular Crowding Maintain Native Equine Tenocyte Function in Culture. Cells 2022; 11:cells11091562. [PMID: 35563866 PMCID: PMC9103545 DOI: 10.3390/cells11091562] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 04/22/2022] [Accepted: 05/04/2022] [Indexed: 02/06/2023] Open
Abstract
The absence of a native extracellular matrix and the use of xenogeneic sera are often associated with rapid tenocyte function losses during in vitro culture. Herein, we assessed the influence of different sera (equine serum and foetal bovine serum) on equine tenocyte morphology, viability, metabolic activity, proliferation and protein synthesis as a function of tissue-specific extracellular matrix deposition (induced via macromolecular crowding), aging (passages 3, 6, 9) and time in culture (days 3, 5, 7). In comparison to cells at passage 3, at day 3, in foetal bovine serum and without macromolecular crowding (traditional equine tenocyte culture), the highest number of significantly decreased readouts were observed for cells in foetal bovine serum, at passage 3, at day 5 and day 7 and without macromolecular crowding. Again, in comparison to traditional equine tenocyte culture, the highest number of significantly increased readouts were observed for cells in equine serum, at passage 3 and passage 6, at day 7 and with macromolecular crowding. Our data advocate the use of an allogeneic serum and tissue-specific extracellular matrix for effective expansion of equine tenocytes.
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Affiliation(s)
- Andrea Rampin
- Laboratory of Animal Science, Nutrition and Biotechnology, School of Agriculture, University of Ioannina, 47100 Arta, Greece; (A.R.); (I.S.); (A.T.)
- School of Veterinary Medicine, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (N.D.); (N.P.)
- Regenerative, Modular & Developmental Engineering Laboratory (REMODEL), Charles Institute of Dermatology, Conway Institute of Biomolecular & Biomedical Research, School of Mechanical & Materials Engineering, University College Dublin (UCD), D04 V1W8 Dublin, Ireland
| | - Ioannis Skoufos
- Laboratory of Animal Science, Nutrition and Biotechnology, School of Agriculture, University of Ioannina, 47100 Arta, Greece; (A.R.); (I.S.); (A.T.)
| | - Michael Raghunath
- Center for Cell Biology and Tissue Engineering, Institute for Chemistry and Biotechnology, Zurich University of Applied Sciences, 8820 Wädenswil, Switzerland;
| | - Athina Tzora
- Laboratory of Animal Science, Nutrition and Biotechnology, School of Agriculture, University of Ioannina, 47100 Arta, Greece; (A.R.); (I.S.); (A.T.)
| | - Nikolaos Diakakis
- School of Veterinary Medicine, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (N.D.); (N.P.)
| | - Nikitas Prassinos
- School of Veterinary Medicine, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (N.D.); (N.P.)
| | - Dimitrios I. Zeugolis
- Regenerative, Modular & Developmental Engineering Laboratory (REMODEL), Charles Institute of Dermatology, Conway Institute of Biomolecular & Biomedical Research, School of Mechanical & Materials Engineering, University College Dublin (UCD), D04 V1W8 Dublin, Ireland
- Correspondence: ; Tel.: +353-17-16-18-84
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8
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Wang Z, Xiang L, Lin F, Tang Y, Deng L, Cui W. A Biomaterial-Based Hedging Immune Strategy for Scarless Tendon Healing. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2200789. [PMID: 35267215 DOI: 10.1002/adma.202200789] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 03/08/2022] [Indexed: 06/14/2023]
Abstract
Scarring rather than regeneration, is an inevitable outcome of unbalanced amplifications of inflammation-destructive signals and atresia of the regenerative niche. However, identifying and effectively hedging against the risk of scarring and realizing the conversion of regenerative cues remain difficult. In this work, a hedging immune strategy based microfibrous membrane (Him-MFM), by tethering distearoyl phosphoethanolamine layer-supported copoly(lactic/glycolic acid) electrospun fibers with identified CD11b+ /CD68+ scarring subpopulation membranes in the immune landscape after tendon injury to counterweigh tissue damage, is reported. Him-MFM, carrying relevant risk receptors is shown to shift high type I biased polarization, alleviate apoptosis and metabolic stress, and mitigate inflammatory tenocyte response. Remarkably, the hedging immune strategy reverses the damaged tendon sheath barrier to the innate IL-33 secretory phenotype by 4.36 times and initiates the mucous-IL-33-Th2 axis, directly supplying a transient but obligate regenerative niche for sheath stem cell proliferation. In murine flexor tendon injury, the wrapping of Him-MFM alleviates pathological responses, protects tenocytes in situ, and restores hierarchically arranged collagen fibers covered with basement membrane, and is structurally and functionally comparable to mature tendons, demonstrating that the hedging immunity is a promising strategy to yield regenerative responses not scarring.
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Affiliation(s)
- Zhen Wang
- Department of Orthopaedics, Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases, Shanghai Institute of Traumatology and Orthopaedics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 197 Ruijin 2nd Road, Shanghai, 200025, P. R. China
| | - Lei Xiang
- Department of Orthopaedics, Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases, Shanghai Institute of Traumatology and Orthopaedics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 197 Ruijin 2nd Road, Shanghai, 200025, P. R. China
| | - Feng Lin
- Department of Orthopaedics, Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases, Shanghai Institute of Traumatology and Orthopaedics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 197 Ruijin 2nd Road, Shanghai, 200025, P. R. China
| | - Yunkai Tang
- Department of Orthopaedics, Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases, Shanghai Institute of Traumatology and Orthopaedics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 197 Ruijin 2nd Road, Shanghai, 200025, P. R. China
| | - Lianfu Deng
- Department of Orthopaedics, Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases, Shanghai Institute of Traumatology and Orthopaedics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 197 Ruijin 2nd Road, Shanghai, 200025, P. R. China
| | - Wenguo Cui
- Department of Orthopaedics, Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases, Shanghai Institute of Traumatology and Orthopaedics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 197 Ruijin 2nd Road, Shanghai, 200025, P. R. China
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9
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Shimada M, Wada K, Tanaka S, Murakami S, Kanno N, Hayashi K, Hara Y. Effects of long-term and high-dose administration of glucocorticoids on the cranial cruciate ligament in healthy beagle dogs. PLoS One 2022; 17:e0262206. [PMID: 35061786 PMCID: PMC8782538 DOI: 10.1371/journal.pone.0262206] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Accepted: 12/20/2021] [Indexed: 11/23/2022] Open
Abstract
This study aimed to determine the effects of long-term and high-dose administration of glucocorticoids (GCs) on the histological and mechanical properties of the cranial cruciate ligament (CrCL) in healthy beagle dogs. A synthetic corticosteroid at 2 mg/kg every 12 h was administered for 84 days in nine dogs (18 CrCLs) (GC group). Twenty CrCLs from 12 healthy male beagles were used as the normal control (control group). CrCLs were histologically examined (n = 12 in the GC group and n = 14 in the control group) using hematoxylin-eosin, Alcian-Blue, Elastica-Eosin stains, and immunohistological staining of type 1 collagen and elastin. An additional 12 CrCLs were mechanically tested (n = 6 in the GC and n = 6 in the control groups) to determine failure pattern, maximum tensile strength, maximum stress, elastic modulus, and stress and strain at the transition point. The histological examination revealed a significant increase in interfascicular area and fibrillar disorientation at the tibial attachment in both groups. The ratios of mucopolysaccharide-positive area and positive areas of elastic fibers were significantly higher in the control group than in the GC group. The biomechanical examination demonstrated significantly lower stress at the transition point in the GC group than in the control group. The present study results indicate that high-dose corticosteroids may affect metabolism, such as mucopolysaccharides and elastic fibers production, although the effect on type 1 collagen production is small. These changes of the extracellular matrix had a small effect on the strength of the ligament. This study suggested that the ligamentous changes associated with GC are different from the degeneration observed in spontaneous canine CrCL disease.
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Affiliation(s)
- Masakazu Shimada
- Division of Veterinary Surgery, Department of Veterinary Science, Faculty of Veterinary Medicine, Nippon Veterinary and Life Science University, Musashino-shi, Tokyo, Japan
- * E-mail:
| | - Koki Wada
- Division of Veterinary Surgery, Department of Veterinary Science, Faculty of Veterinary Medicine, Nippon Veterinary and Life Science University, Musashino-shi, Tokyo, Japan
| | - Sachiyo Tanaka
- Division of Veterinary Surgery, Department of Veterinary Science, Faculty of Veterinary Medicine, Nippon Veterinary and Life Science University, Musashino-shi, Tokyo, Japan
| | - Sawako Murakami
- Division of Veterinary Surgery, Department of Veterinary Science, Faculty of Veterinary Medicine, Nippon Veterinary and Life Science University, Musashino-shi, Tokyo, Japan
| | - Nobuo Kanno
- Division of Veterinary Surgery, Department of Veterinary Science, Faculty of Veterinary Medicine, Nippon Veterinary and Life Science University, Musashino-shi, Tokyo, Japan
| | - Kei Hayashi
- Department of Clinical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, New York, United States of America
| | - Yasushi Hara
- Division of Veterinary Surgery, Department of Veterinary Science, Faculty of Veterinary Medicine, Nippon Veterinary and Life Science University, Musashino-shi, Tokyo, Japan
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Ryan C, Pugliese E, Shologu N, Gaspar D, Rooney P, Islam MN, O'Riordan A, Biggs M, Griffin M, Zeugolis D. A combined physicochemical approach towards human tenocyte phenotype maintenance. Mater Today Bio 2021; 12:100130. [PMID: 34632361 PMCID: PMC8488312 DOI: 10.1016/j.mtbio.2021.100130] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 08/27/2021] [Accepted: 08/28/2021] [Indexed: 02/08/2023] Open
Abstract
During in vitro culture, bereft of their optimal tissue context, tenocytes lose their phenotype and function. Considering that tenocytes in their native tissue milieu are exposed simultaneously to manifold signals, combination approaches (e.g. growth factor supplementation and mechanical stimulation) are continuously gaining pace to control cell fate during in vitro expansion, albeit with limited success due to the literally infinite number of possible permutations. In this work, we assessed the potential of scalable and potent physicochemical approaches that control cell fate (substrate stiffness, anisotropic surface topography, collagen type I coating) and enhance extracellular matrix deposition (macromolecular crowding) in maintaining human tenocyte phenotype in culture. Cell morphology was primarily responsive to surface topography. The tissue culture plastic induced the largest nuclei area, the lowest aspect ratio, and the highest focal adhesion kinase. Collagen type I coating increased cell number and metabolic activity. Cell viability was not affected by any of the variables assessed. Macromolecular crowding intensely enhanced and accelerated native extracellular matrix deposition, albeit not in an aligned fashion, even on the grooved substrates. Gene analysis at day 14 revealed that the 130 kPa grooved substrate without collagen type I coating and under macromolecular crowding conditions positively regulated human tenocyte phenotype. Collectively, this work illustrates the beneficial effects of combined physicochemical approaches in controlling cell fate during in vitro expansion.
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Affiliation(s)
- C.N.M. Ryan
- Regenerative, Modular & Developmental Engineering Laboratory (REMODEL), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Galway, Ireland
- Science Foundation Ireland (SFI) Centre for Research in Medical Devices (CÚRAM), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Galway, Ireland
| | - E. Pugliese
- Regenerative, Modular & Developmental Engineering Laboratory (REMODEL), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Galway, Ireland
- Science Foundation Ireland (SFI) Centre for Research in Medical Devices (CÚRAM), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Galway, Ireland
| | - N. Shologu
- Regenerative, Modular & Developmental Engineering Laboratory (REMODEL), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Galway, Ireland
- Science Foundation Ireland (SFI) Centre for Research in Medical Devices (CÚRAM), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Galway, Ireland
| | - D. Gaspar
- Regenerative, Modular & Developmental Engineering Laboratory (REMODEL), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Galway, Ireland
- Science Foundation Ireland (SFI) Centre for Research in Medical Devices (CÚRAM), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Galway, Ireland
| | - P. Rooney
- Science Foundation Ireland (SFI) Centre for Research in Medical Devices (CÚRAM), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Galway, Ireland
| | - Md N. Islam
- Science Foundation Ireland (SFI) Centre for Research in Medical Devices (CÚRAM), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Galway, Ireland
- Regenerative Medicine Institute (REMEDI), School of Medicine, Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Galway, Ireland
- Discipline of Biochemistry, School of Natural Sciences, National University of Ireland Galway (NUI Galway), Galway, Ireland
| | - A. O'Riordan
- Tyndall National Institute, University College Cork (UCC), Cork, Ireland
| | - M.J. Biggs
- Science Foundation Ireland (SFI) Centre for Research in Medical Devices (CÚRAM), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Galway, Ireland
| | - M.D. Griffin
- Science Foundation Ireland (SFI) Centre for Research in Medical Devices (CÚRAM), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Galway, Ireland
- Regenerative Medicine Institute (REMEDI), School of Medicine, Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Galway, Ireland
| | - D.I. Zeugolis
- Regenerative, Modular & Developmental Engineering Laboratory (REMODEL), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Galway, Ireland
- Science Foundation Ireland (SFI) Centre for Research in Medical Devices (CÚRAM), Biomedical Sciences Building, National University of Ireland Galway (NUI Galway), Galway, Ireland
- Regenerative, Modular & Developmental Engineering Laboratory (REMODEL), Charles Institute of Dermatology, Conway Institute of Biomolecular & Biomedical Research and School of Mechanical & Materials Engineering, University College Dublin (UCD), Dublin, Ireland
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11
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Viganò M, Lugano G, Orfei CP, Menon A, Ragni E, Colombini A, de Luca P, Talò G, Randelli PS, de Girolamo L. Tendon Cells Derived From The Long Head Of The Biceps And The Supraspinatus Tendons Of Patients Affected By Rotator Cuff Tears Show Different Expression Of Inflammatory Markers. Connect Tissue Res 2021; 62:570-579. [PMID: 32921180 DOI: 10.1080/03008207.2020.1816993] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
AIM OF THE STUDY Tendons are exposed to mechanical stress constantly during movements and thus they are frequently subjected to injuries. Rotator cuff tears are common musculoskeletal disorders, mainly involving the supraspinatus tendon. The characterization of the tenocytes derived from this tendon and the comparison to cells isolated from the long head of the biceps tendon obtained from donors affected by rotator cuff disease may improve the knowledge of the cellular mechanisms involved in the initiation and progression of the pathology. Thus, the aim of the present study was to characterize and compare donor-matched human tendon cells (TCs) isolated from the long head of the biceps (LHB-TCs) and the supraspinatus tendons (SSP-TCs) of patients affected by rotator cuff tears. METHODS donor-matched LHB-TCs and SSP-TCs were isolated and cultured up to passage 3. Phenotypic appearance, metabolic activity, DNA content, production of soluble mediators (IL-1Ra, IL-1β, IL-6, and VEGF) and gene expression of tendon markers (SCX, COL1A1, COL3A1), inflammatory (PTGS2), and catabolic enzymes (MMP-1, MMP-3) were evaluated. RESULTS LHB-TCs showed an elongated fibroblast-like shape, while SSP-TCs appeared irregular with jagged membrane. SSP-TCs gene expression revealed an augmented production of PTGS2, a marker of inflammation, whereas they produced a reduced amount of IL-6, in respect to LHB-TCs. CONCLUSION SSP-TCs showed higher cellular stress and expression of inflammatory markers with respect to donor-matched LHB-TCs, suggesting that addressing the physio-pathological state of supraspinatus tendon cells during treatment of rotator cuff tears could favor tissue healing and possibly prevent relapses.
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Affiliation(s)
- Marco Viganò
- Orthopedics Biotechnology Lab, IRCCS Istituto Ortopedico Galeazzi, Milan, Italy
| | - Gaia Lugano
- Orthopedics Biotechnology Lab, IRCCS Istituto Ortopedico Galeazzi, Milan, Italy
| | | | - Alessandra Menon
- Laboratory of Applied Biomechanics, Department of Biomedical Sciences for Health, Università degli Studi di Milano, Milan, Italy.,U.O.C. 1° Clinica Ortopedica, ASST Centro Specialistico Ortopedico Traumatologico Gaetano Pini-CTO, Milan, Italy.,Research Center for Adult and Pediatric Rheumatic Diseases (RECAP-RD), Department of Biomedical Sciences for Health, Università degli Studi di Milano, Milan, Italy
| | - Enrico Ragni
- Orthopedics Biotechnology Lab, IRCCS Istituto Ortopedico Galeazzi, Milan, Italy
| | | | - Paola de Luca
- Orthopedics Biotechnology Lab, IRCCS Istituto Ortopedico Galeazzi, Milan, Italy
| | - Giuseppe Talò
- Orthopedics Biotechnology Lab, IRCCS Istituto Ortopedico Galeazzi, Milan, Italy
| | - Pietro S Randelli
- Laboratory of Applied Biomechanics, Department of Biomedical Sciences for Health, Università degli Studi di Milano, Milan, Italy.,U.O.C. 1° Clinica Ortopedica, ASST Centro Specialistico Ortopedico Traumatologico Gaetano Pini-CTO, Milan, Italy.,Research Center for Adult and Pediatric Rheumatic Diseases (RECAP-RD), Department of Biomedical Sciences for Health, Università degli Studi di Milano, Milan, Italy
| | - Laura de Girolamo
- Orthopedics Biotechnology Lab, IRCCS Istituto Ortopedico Galeazzi, Milan, Italy
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12
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Effects and Mechanism of Berberine on the Dexamethasone-Induced Injury of Human Tendon Cells. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2020; 2020:8832218. [PMID: 33204294 PMCID: PMC7666623 DOI: 10.1155/2020/8832218] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/06/2020] [Revised: 10/10/2020] [Accepted: 10/26/2020] [Indexed: 12/16/2022]
Abstract
Objective To investigate the effects of berberine (Berb) on dexamethasone- (Dex-) induced injury of human tendon cells and its potential mechanism. Methods CCK-8 assay was used to explore the appropriate concentration of Dex-induced injury of tendon cells and the doses of Berb attenuates Dex cytotoxicity; cell wound healing assay was used to detect the effects (P < 0.05) of Berb and Dex on the migration ability of tendon cells; flow cytometry was used to measure cell apoptosis; DCF DA fluorescent probe was used to measure the ROS activity of cells. Western blotting was used to detect the expression of phenotype related factors including smooth muscle actin α (SMA-α), type I collagen (Col I), col III, apoptosis-related factors, caspase-3, cleaved caspase-3, caspase-9, cleaved caspase-9, and PI3K/AKT. Results CCK-8 assay showed that 1-100 μM Dex significantly inhibited the proliferation of tendon cells in a concentration-dependent manner (P < 0.05), where the inhibitory effect of 100 μM Dex was most significant (P < 0.005), and the pretreatment of 150, 200 μM Berb could reverse those inhibitions (all P < 0.05). Compared with the control group, Dex significantly inhibited cell migration (P < 0.05), while Berb pretreatment could enhance cell migration (P < 0.05). Flow cytometry and ROS assay showed that Dex could induce apoptosis and oxidative stress response of tendon cells (all P < 0.05), while Berb could reverse those responses (P < 0.05). Western blot showed that Dex could inhibit the expression of the col I and III as well as α-SMA (all P < 0.05) and enhance the expression of apoptosis-related factors including cleaved caspase-3 and cleaved caspase-9 (all P < 0.05). Besides, Dex could also inhibit the activation of the PI3K/AKT signaling pathway (all P < 0.05), thus affecting cell function, while Berb treatment significantly reversed the expression of those above proteins (all P < 0.05). Conclusion Berb attenuated DEX induced reduction of proliferation and migration, oxidative stress, and apoptosis of tendon cells by activating the PI3K/AKT signaling pathway and regulated the expression of phenotype related biomarkers in tendon cells. However, further studies are still needed to clarify the protective effects of Berb in vivo.
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13
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Sustained Exposure of Substance P Causes Tendinopathy. Int J Mol Sci 2020; 21:ijms21228633. [PMID: 33207770 PMCID: PMC7709031 DOI: 10.3390/ijms21228633] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 11/08/2020] [Accepted: 11/12/2020] [Indexed: 01/09/2023] Open
Abstract
Recently, neuromediators such as substance P (SP) have been found to be important factors in tendon homeostasis. Some studies have found SP to be the cause of inflammation and tendinopathy, whereas others have determined it to be a critical component of tendon healing. As demonstrated by these conflicting findings, the effects of SP on tendinopathy remain unclear. In this study, we hypothesized that the duration of SP exposure determines its effect on the tendons, with repetitive long-term exposure leading to the development of tendinopathy. First, we verified the changes in gene and protein expression using in vitro tenocytes with 10-day exposure to SP. SP and SP + Run groups were injected with SP in their Achilles tendon every other day for 14 days. Achilles tendons were then harvested for biomechanical testing and histological processing. Notably, tendinopathic changes with decreased tensile strength, as observed in the Positive Control, were observed in the Achilles in the SP group compared to the Negative Control. Subsequent histological analysis, including Alcian blue staining, also revealed alterations in the Achilles tendon, which were generally consistent with the findings of tendinopathy in SP and SP + Run groups. Immunohistochemical analysis revealed increased expression of SP in the SP group, similar to the Positive Control. In general, the SP + Run group showed worse tendinopathic changes. These results suggest that sustained exposure to SP may be involved in the development of tendinopathy. Future research on inhibiting SP is warranted to target SP in the treatment of tendinopathy and may be beneficial to patients with tendinopathy.
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Kelly E, Smith R, Dudhia J, Faragher RGA. Science-in-brief: The importance of senescence in tendinopathy: New opportunities. Equine Vet J 2020; 52:349-351. [PMID: 32259376 DOI: 10.1111/evj.13228] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Accepted: 01/12/2020] [Indexed: 11/27/2022]
Affiliation(s)
- E Kelly
- Department of Clinical Sciences and Services, The Royal Veterinary College, North Mymms, Hertfordshire, UK
| | - R Smith
- Department of Clinical Sciences and Services, The Royal Veterinary College, North Mymms, Hertfordshire, UK
| | - J Dudhia
- Department of Clinical Sciences and Services, The Royal Veterinary College, North Mymms, Hertfordshire, UK
| | - R G A Faragher
- School of Pharmacy and Biomolecular Science, University of Brighton, Brighton, East Sussex, UK
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15
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Dexamethasone causes calcium deposition and degeneration in human anterior cruciate ligament cells through endoplasmic reticulum stress. Biochem Pharmacol 2020; 175:113918. [PMID: 32194056 DOI: 10.1016/j.bcp.2020.113918] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2020] [Accepted: 03/13/2020] [Indexed: 11/23/2022]
Abstract
BACKGROUND Dexamethasone is widely used in the treatment of joint diseases due to its anti-inflammatory properties. However, it can cause serious adverse effects. The anterior cruciate ligament (ACL) is an important stabilizer of the knee joint. However, the effect of dexamethasone treatment on the ACL is unclear. OBJECTIVE This study aims to explore the effects of dexamethasone on ACL tissues and cells through in vitro and in vivo experiments. RESULTS In vitro, we found that after treatment with dexamethasone, human ACL cell apoptosis was increased, type I collagen (COL1A1) content was decreased, mineralization related genes (ENPP1 and ANKH) and calcified nodules were increased, and endoplasmic reticulum stress (ERS) was enhanced. However, ERS inhibitors could significantly inhibit the increase in calcification and the decrease in COL1A1 induced by dexamethasone. In vivo, Wistar rats received the infra-articular injection with dexamethasone (0.5 mg/kg) for 8 weeks. We found that dexamethasone treatment decreased the COL1A1 content and increased the COL2A1 content in the ACL tissues of rats and that chondroid differentiation and mineralization occurred. Meanwhile, the expression of ERS-related proteins was increased. CONCLUSION Dexamethasone increased the calcification of ACL cells and caused ACL degeneration through ERS, suggesting that long-term treatment with dexamethasone may cause adverse effects on ACL tissue and increase the risk of long-term rupture.
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16
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Lewis T, Zeisig E, Gaida JE. Does glucocorticoid exposure explain the association between metabolic dysfunction and tendinopathy? Endocr Connect 2020; 9:EC-19-0555.R1. [PMID: 31967969 PMCID: PMC7040857 DOI: 10.1530/ec-19-0555] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Accepted: 01/21/2020] [Indexed: 12/14/2022]
Abstract
BACKGROUND While metabolic health is acknowledged to affect connective tissue structure and function, the mechanisms are unclear. Glucocorticoids are present in almost every cell type throughout the body and control key physiological processes such as energy homeostasis, stress response, inflammatory and immune processes, and cardiovascular function. Glucocorticoid excess manifests as visceral adiposity, dyslipidaemia, insulin resistance, and type 2 diabetes. As these metabolic states are also associated with tendinopathy and tendon rupture, it may be that glucocorticoids excess is the link between metabolic health and tendinopathy. OBJECTIVE To synthesise current knowledge linking glucocorticoids exposure to tendon structure and function. METHODS Narrative literature review. RESULTS We provide an overview of endogenous glucocorticoid production, regulation, and signalling. Next we review the impact that oral glucocorticoid has on risk of tendon rupture and the effect that injected glucocorticoid has on resolution of symptoms. Then we highlight the clinical and mechanistic overlap between tendinopathy and glucocorticoid excess in the areas of visceral adiposity, dyslipidaemia, insulin resistance and type 2 diabetes. In these areas, we highlight the role of glucocorticoids and how these hormones might underpin the connection between metabolic health and tendon dysfunction. CONCLUSIONS There are several plausible pathways through which glucocorticoids might mediate the connection between metabolic health and tendinopathy.
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Affiliation(s)
- Trevor Lewis
- Physiotherapy Department, Aintree University Hospital NHS Foundation Trust, Liverpool, UK
| | - Eva Zeisig
- Department of Surgical and Perioperative Sciences, Umeå Univerisity, Umeå, Sweden
| | - Jamie E Gaida
- University of Canberra Research Institute for Sport and Exercise (UCRISE), Canberra, Australian Capital Territory, Australia
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Min K, Lee JM, Kim MJ, Jung SY, Kim KS, Lee S, Choi YS. Restoration of Cellular Proliferation and Characteristics of Human Tenocytes by Vitamin D. J Orthop Res 2019; 37:2241-2248. [PMID: 31115927 DOI: 10.1002/jor.24352] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Accepted: 05/14/2019] [Indexed: 02/04/2023]
Abstract
Vitamin D (Vit D) increases calcium absorption in the intestine after binding to the Vit D receptor (VDR). The VDR has also been identified in muscle cells. Vit D supplementation resulted in improved muscle strength. However, there is a paucity of studies of the role of Vit D on tenocytes. We investigated the effects of Vit D on damaged tenocytes. Human tenocytes were treated with dexamethasone (Dex) to induce cell injury. Expression of the tenocyte-related markers tenomodulin (Tnmd), tenascin C (Tnc), scleraxis (Scx), mohawk (Mkx), and collagen (Col) 1 and 3 were measured. Then, tenocytes were cotreated with Vit D. 1-α-Hydroxylase and VDR were explored in tenocytes. With 10 μM Dex, the growth of tenocytes was significantly inhibited, and the gene expression of Tnmd, Tnc, Scx, Mkx, Col 1 and 3 also decreased. When tenocytes were cotreated with Vit D, cell proliferation recovered in a dose-dependent manner, and the expression of TNMD and Col 1 improved. When studying the mechanisms of the effects of Vit D on tenocytes, reactive oxygen species produced by Dex decreased with Vit D, and the phosphorylation of extracellular signal-regulated kinase and p38 was stimulated by Vit D cotreatment. 1-α-Hydroxylase and VDR were found in tenocytes, indicating that the cells have the ability to use an inactive form of Vit D and interact with it. Vit D is known to perform diverse actions and its protective effects on tenocytes suggest its beneficial role in tendon in addition to muscle and bone. © 2019 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 37:2241-2248, 2019.
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Affiliation(s)
- Kyunghoon Min
- Department of Rehabilitation Medicine, CHA Bundang Medical Center, CHA University School of Medicine, Seongnam, Republic of Korea
| | - Ji Min Lee
- Department of Biotechnology, CHA University, Seongnam, 13488, Republic of Korea
| | - Mi Jin Kim
- Department of Biotechnology, CHA University, Seongnam, 13488, Republic of Korea
| | - Sang Youn Jung
- Department of Internal Medicine, Division of Rheumatology, CHA Bundang Medical Center, CHA University School of Medicine, Seongnam, Republic of Korea
| | - Kyung-Soo Kim
- Department of Internal Medicine, Division of Endocrinology and Metabolism, CHA Bundang Medical Center, CHA University School of Medicine, Seongnam, Republic of Korea
| | - Soonchul Lee
- Department of Orthopaedic Surgery, CHA Bundang Medical Center, CHA University School of Medicine, Seongnam, Republic of Korea
| | - Yong-Soo Choi
- Department of Biotechnology, CHA University, Seongnam, 13488, Republic of Korea
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18
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Suwanjang W, Wu KLH, Prachayasittikul S, Chetsawang B, Charngkaew K. Mitochondrial Dynamics Impairment in Dexamethasone-Treated Neuronal Cells. Neurochem Res 2019; 44:1567-1581. [PMID: 30888577 DOI: 10.1007/s11064-019-02779-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Revised: 03/14/2019] [Accepted: 03/15/2019] [Indexed: 10/27/2022]
Abstract
Dexamethasone is an approved steroid for clinical use to activate or suppress cytokines, chemokines, inflammatory enzymes and adhesion molecules. It enters the brain, by-passing the blood brain barrier, and acts through genomic mechanisms. High levels of dexamethasone are able to induce neuronal cell loss, reduce neurogenesis and cause neuronal dysfunction. The exact mechanisms of steroid, especially the dexamethasone contribute to neuronal damage remain unclear. Therefore, the present study explored the mitochondrial dynamics underlying dexamethasone-induced toxicity of human neuroblastoma SH-SY5Y cells. Neuronal cells treatment with the dexamethasone resulted in a marked decrease in cell proliferation. Dexamethasone-induced neurotoxicity also caused upregulation of mitochondrial fusion and cleaved caspase-3 proteins expression. Mitochondria fusion was found in large proportions of dexamethasone-treated cells. These results suggest that dexamethasone-induced hyperfused mitochondrial structures are associated with a caspase-dependent death process in dexamethasone-induced neurotoxicity. These findings point to the high dosage of dexamethasone as being neurotoxic through impairment of mitochondrial dynamics.
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Affiliation(s)
- Wilasinee Suwanjang
- Center for Research and Innovation, Faculty of Medical Technology, Mahidol University, 10700, Bangkok, Thailand.
| | - Kay L H Wu
- Institute for Translational Research in Biomedicine, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, 83301, Taiwan, Republic of China
| | - Supaluk Prachayasittikul
- Center of Data Mining and Biomedical Informatics, Faculty of Medical Technology, Mahidol University, 10700, Bangkok, Thailand
| | - Banthit Chetsawang
- Research Center for Neuroscience, Institute of Molecular Biosciences, Mahidol University, 73170, Nakhonpathom, Thailand
| | - Komgrid Charngkaew
- Department of Pathology, Faculty of Medicine, Siriraj Hospital, 10700, Bangkok, Thailand
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19
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Effect and safety of stimulating acupoints in children with cough variant asthma: A Meta-analysis. J TRADIT CHIN MED 2018. [DOI: 10.1016/s0254-6272(18)30880-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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20
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Scleraxis: a force-responsive cell phenotype regulator. CURRENT OPINION IN PHYSIOLOGY 2018. [DOI: 10.1016/j.cophys.2017.07.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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21
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Ma S, Wang C, Li J, Zhang Z, Yu Y, Lv F. Efficacy of Corticosteroid Injection for Treatment of Trigger Finger: A Meta-Analysis of Randomized Controlled Trials. J INVEST SURG 2018; 32:433-441. [PMID: 29381439 DOI: 10.1080/08941939.2018.1424970] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Purpose: To determine the efficacy and safety of corticosteroid injection for trigger finger by performing a meta-analysis of all relevant studies. Methods: PubMed, EMBASE, and Cochrane Library databases were searched for randomized controlled trials (RCTs) comparing corticosteroid injection with other treatments for trigger finger. Pooled summary estimates for outcomes, including success rate, relapse rate, visual analogue score (VAS) and complications, were calculated as standardized mean difference (SMD) or relative risk (RR) either on a fixed- or random-effect model via Stata 12.0 software. Results: Ten literatures involving 806 patients (387 in corticosteroid injection group and 419 in control group) were included. Pooled analysis showed there were no differences in the success rate, VAS and complications between patients undergoing corticosteroid injection and others. However, the relapse rate was significantly higher in patients treated with corticosteroid injection than that of other treatments (RR = 19.53, 95% CI = 6.23-61.19). Subgroup analysis indicated the efficacy of corticosteroid injection was superior to other non-surgical treatments (success rate: RR = 1.54, 95% CI = 1.01-2.35), but inferior to surgery (success rate: RR = 0.55, 95% CI = 0.48-0.63; relapse rate: RR = 21.15, 95% CI = 6.06-73.85; VAS: SMD = 3.49, 95% CI = 2.84-4.14). Conclusions: Corticosteroid injection may be an effective strategy for management of trigger finger, although surgery may be needed for some patients due to recurrence.
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Affiliation(s)
- Shiwei Ma
- a Department of Hand Surgery, Central Hospital Affiliated to Shenyang Medical College , Shen yang , China
| | - Chunbo Wang
- a Department of Hand Surgery, Central Hospital Affiliated to Shenyang Medical College , Shen yang , China
| | - Jiang Li
- a Department of Hand Surgery, Central Hospital Affiliated to Shenyang Medical College , Shen yang , China
| | - Zhiyu Zhang
- a Department of Hand Surgery, Central Hospital Affiliated to Shenyang Medical College , Shen yang , China
| | - Yao Yu
- a Department of Hand Surgery, Central Hospital Affiliated to Shenyang Medical College , Shen yang , China
| | - Feng Lv
- a Department of Hand Surgery, Central Hospital Affiliated to Shenyang Medical College , Shen yang , China
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22
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Spang C, Backman LJ, Le Roux S, Chen J, Danielson P. Glutamate signaling through the NMDA receptor reduces the expression of scleraxis in plantaris tendon derived cells. BMC Musculoskelet Disord 2017; 18:218. [PMID: 28545490 PMCID: PMC5445477 DOI: 10.1186/s12891-017-1575-4] [Citation(s) in RCA: 7] [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: 01/13/2017] [Accepted: 05/12/2017] [Indexed: 12/31/2022] Open
Abstract
Background A body of evidence demonstrating changes to the glutaminergic system in tendinopathy has recently emerged. This hypothesis was further tested by studying the effects of glutamate on the tenocyte phenotype, and the impact of loading and exposure to glucocorticoids on the glutamate signaling machinery. Methods Plantaris tendon tissue and cultured plantaris tendon derived cells were immunohisto-/cytochemically stained for glutamate, N-Methyl-D-Aspartate receptor 1 (NMDAR1) and vesicular glutamate transporter 2 (VGluT2). Primary cells were exposed to glutamate or receptor agonist NMDA. Cell death/viability was measured via LDH/MTS assays, and Western blot for cleaved caspase 3 (c-caspase 3) and cleaved poly (ADP-ribose) polymerase (c-PARP). Scleraxis mRNA (Scx)/protein(SCX) were analyzed by qPCR and Western blot, respectively. A FlexCell system was used to apply cyclic strain. The effect of glucocorticoids was studies by adding dexamethasone (Dex). The mRNA of the glutamate synthesizing enzymes Got1 and Gls, and NMDAR1 protein were measured. Levels of free glutamate were determined by a colorimetric assay. Results Immunoreactions for glutamate, VGluT2, and NMDAR1 were found in tenocytes and peritendinous cells in tissue sections and in cultured cells. Cell death was induced by high concentrations of glutamate but not by NMDA. Scleraxis mRNA/protein was down-regulated in response to NMDA/glutamate stimulation. Cyclic strain increased, and Dex decreased, Gls and Got1 mRNA expression. Free glutamate levels were lower after Dex exposure. Conclusions In conclusion, NMDA receptor stimulation leads to a reduction of scleraxis expression that may be involved in a change of phenotype in tendon cells. Glutamate synthesis is increased in tendon cells in response to strain and decreased by glucocorticoid stimulation. This implies that locally produced glutamate could be involved in the tissue changes observed in tendinopathy.
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Affiliation(s)
- Christoph Spang
- Department of Integrative Medical Biology, Anatomy, Umeå University, SE-901 87, Umeå, Sweden.
| | - Ludvig J Backman
- Department of Integrative Medical Biology, Anatomy, Umeå University, SE-901 87, Umeå, Sweden
| | - Sandrine Le Roux
- Department of Integrative Medical Biology, Anatomy, Umeå University, SE-901 87, Umeå, Sweden
| | - Jialin Chen
- Department of Integrative Medical Biology, Anatomy, Umeå University, SE-901 87, Umeå, Sweden
| | - Patrik Danielson
- Department of Integrative Medical Biology, Anatomy, Umeå University, SE-901 87, Umeå, Sweden.,Department of Clinical Sciences, Ophthalmology, Umeå University, Umeå, Sweden
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