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Korpershoek JV, Vonk LA, Filardo G, Kester EC, van Egmond N, Saris DB, Custers RJ. Effect of Autologous Conditioned Plasma Injections in Patients With Knee Osteoarthritis. Orthop J Sports Med 2023; 11:23259671231184848. [PMID: 37529531 PMCID: PMC10387782 DOI: 10.1177/23259671231184848] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Accepted: 04/13/2023] [Indexed: 08/03/2023] Open
Abstract
Background Autologous conditioned plasma (ACP) is a commercially available platelet concentrate with promising results from clinical trials. Purpose To evaluate the clinical outcome after 3 consecutive injections of ACP in patients with knee osteoarthritis (OA) and study the influence of ACP composition and different patient factors as predictors of treatment effect. Study Design Case series; Level of evidence, 4. Methods This prospective case series included 260 patients (307 knees) who received ACP treatment for knee OA. The mean patient age was 51 ± 10 years. Improvement up to 12 months' follow-up was measured using the Knee injury and Osteoarthritis Outcome Score (KOOS). ACP composition was analyzed in 100 patients. The predictive value of age, sex, history of knee trauma, Kellgren-Lawrence OA grade, body mass index, and ACP composition was evaluated using generalized estimating equations. Results The mean overall KOOS improved from 38 ± 14 at baseline to 45 ± 18 at 3 months, 45 ± 18 at 6 months, and 43 ± 18 at 12 months (all P < .05); 40% of patients achieved an improvement above the minimal clinically important difference (MCID) of 8 after 6 months and 33% after 12 months. The variation in ACP composition did not correlate with KOOS (P > .05). Older age led to a greater clinical benefit (β = 0.27; P = .05), whereas bilateral treatment predicted worse outcomes (β = -5.6; P < .05). Conclusion The improvement in KOOS after treatment with ACP did not reach the MCID in most study patients. Older age was a predictor for better outcomes. The composition of ACP varied between patients but did not predict outcomes within the evaluated range. The study findings show the limited benefit of ACP treatment for knee OA and call for caution with routine use in clinical practice.
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Affiliation(s)
| | - Lucienne A. Vonk
- Department of Orthopaedics, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Giuseppe Filardo
- Service of Orthopaedics and Traumatology, Department of Surgery, EOC, Lugano, Switzerland
- Faculty of Biomedical Sciences, Università della Svizzera Italiana, Lugano, Switzerland
| | - Esmee C. Kester
- Department of Orthopaedics, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Nienke van Egmond
- Department of Orthopaedics, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Daniël B.F. Saris
- Department of Orthopaedics, University Medical Center Utrecht, Utrecht, the Netherlands
- Department of Orthopedic Surgery and Sports Medicine, Mayo Clinic, Rochester, Minnesota, USA
- Department of Reconstructive Medicine, University of Twente, Enschede, the Netherlands
| | - Roel J.H. Custers
- Department of Orthopaedics, University Medical Center Utrecht, Utrecht, the Netherlands
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2
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Muthu S, Korpershoek JV, Novais EJ, Tawy GF, Hollander AP, Martin I. Failure of cartilage regeneration: emerging hypotheses and related therapeutic strategies. Nat Rev Rheumatol 2023:10.1038/s41584-023-00979-5. [PMID: 37296196 DOI: 10.1038/s41584-023-00979-5] [Citation(s) in RCA: 23] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/05/2023] [Indexed: 06/12/2023]
Abstract
Osteoarthritis (OA) is a disabling condition that affects billions of people worldwide and places a considerable burden on patients and on society owing to its prevalence and economic cost. As cartilage injuries are generally associated with the progressive onset of OA, robustly effective approaches for cartilage regeneration are necessary. Despite extensive research, technical development and clinical experimentation, no current surgery-based, material-based, cell-based or drug-based treatment can reliably restore the structure and function of hyaline cartilage. This paucity of effective treatment is partly caused by a lack of fundamental understanding of why articular cartilage fails to spontaneously regenerate. Thus, research studies that investigate the mechanisms behind the cartilage regeneration processes and the failure of these processes are critical to instruct decisions about patient treatment or to support the development of next-generation therapies for cartilage repair and OA prevention. This Review provides a synoptic and structured analysis of the current hypotheses about failure in cartilage regeneration, and the accompanying therapeutic strategies to overcome these hurdles, including some current or potential approaches to OA therapy.
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Affiliation(s)
- Sathish Muthu
- Orthopaedic Research Group, Coimbatore, Tamil Nadu, India
- Department of Biotechnology, School of Engineering and Technology, Sharda University, New Delhi, India
- Department of Biotechnology, Faculty of Engineering, Karpagam Academy of Higher Education, Coimbatore, India
| | - Jasmijn V Korpershoek
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN, USA
- Department of Orthopedics, University Medical Center Utrecht, Utrecht, Netherlands
| | - Emanuel J Novais
- Unidade Local de Saúde do Litoral Alentejano, Orthopedic Department, Santiago do Cacém, Portugal
- Department of Orthopaedic Surgery, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA
| | - Gwenllian F Tawy
- Division of Cell Matrix Biology & Regenerative Medicine, University of Manchester, Manchester, UK
| | - Anthony P Hollander
- Institute of Lifecourse and Medical Sciences, University of Liverpool, Liverpool, UK
| | - Ivan Martin
- Department of Biomedicine, University Hospital Basel, University of Basel, Basel, Switzerland.
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3
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Korpershoek JV, Rikkers M, Vonk LA. Isolation of Chondrons from Hyaline Cartilage. Methods Mol Biol 2023; 2598:21-27. [PMID: 36355282 DOI: 10.1007/978-1-0716-2839-3_3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
In native healthy hyaline cartilage, the chondrocytes are surrounded by a pericellular matrix that has a distinct composition and function compared to the hyaline cartilage extracellular matrix. The chondrocyte together with its pericellular matrix is called a chondron. The type VI collagen, which is the main component of the pericellular matrix, is resistant to enzymatic digestion by pure collagenase and dispase that do digest the extracellular matrix. Therefore, this combination of enzymes can be used to enzymatically isolate chondrons from hyaline cartilage. Chondrons have a high potential for cartilage tissue engineering. This chapter describes in detail how chondrons can be isolated from hyaline cartilage for further use.
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Affiliation(s)
- Jasmijn V Korpershoek
- Department of Orthopaedics, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Margot Rikkers
- Department of Orthopaedics, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Lucienne A Vonk
- Department of Orthopaedics, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands.
- CO.DON AG, Teltow, Germany.
- Xintela AB, Lund, Sweden.
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Korpershoek JV, Rikkers M, Wallis FSA, Dijkstra K, te Raa M, de Knijff P, Saris DBF, Vonk LA. Mitochondrial Transport from Mesenchymal Stromal Cells to Chondrocytes Increases DNA Content and Proteoglycan Deposition In Vitro in 3D Cultures. Cartilage 2022; 13:133-147. [PMID: 36262105 PMCID: PMC9924973 DOI: 10.1177/19476035221126346] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
OBJECTIVE Allogeneic mesenchymal stromal cells (MSCs) are used in the 1-stage treatment of articular cartilage defects. The aim of this study is to investigate whether transport of mitochondria exists between chondrocytes and MSCs and to investigate whether the transfer of mitochondria to chondrocytes contributes to the mechanism of action of MSCs. DESIGN Chondrocytes and MSCs were stained with MitoTracker, and CellTrace was used to distinguish between cell types. The uptake of fluorescent mitochondria was measured in cocultures using flow cytometry. Transport was visualized using fluorescence microscopy. Microvesicles were isolated and the presence of mitochondria was assessed. Mitochondria were isolated from MSCs and transferred to chondrocytes using MitoCeption. Pellets of chondrocytes, chondrocytes with transferred MSC mitochondria, and cocultures were cultured for 28 days. DNA content and proteoglycan content were measured. Mitochondrial DNA of cultured pellets and of repair cartilage tissue was quantified. RESULTS Mitochondrial transfer occurred bidirectionally within the first 4 hours until 16 hours of coculture. Transport took place via tunneling nanotubes, direct cell-cell contact, and extracellular vesicles. After 28 days of pellet culture, DNA content and proteoglycan deposition were higher in chondrocyte pellets to which MSC mitochondria were transferred than the control groups. No donor mitochondrial DNA was traceable in the biopsies, whereas an increase in MSC mitochondrial DNA was seen in the pellets. CONCLUSIONS These results suggest that mitochondrial transport plays a role in the chondroinductive effect of MSCs on chondrocytes in vitro. However, in vivo no transferred mitochondria could be traced back after 1 year.
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Affiliation(s)
- Jasmijn V. Korpershoek
- UMC Utrecht, Utrecht, The
Netherlands,Daniel B. F. Saris, UMC Utrecht,
Huispostnummer G05.228, Heidelberglaan 100, Utrecht 3584 CX, The Netherlands.
| | | | | | | | - Marije te Raa
- Leids Universitair Medisch Centrum,
Leiden, The Netherlands
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5
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Korpershoek JV, Rikkers M, de Windt TS, Tryfonidou MA, Saris DBF, Vonk LA. Selection of Highly Proliferative and Multipotent Meniscus Progenitors through Differential Adhesion to Fibronectin: A Novel Approach in Meniscus Tissue Engineering. Int J Mol Sci 2021; 22:ijms22168614. [PMID: 34445320 PMCID: PMC8395239 DOI: 10.3390/ijms22168614] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 08/05/2021] [Accepted: 08/07/2021] [Indexed: 12/26/2022] Open
Abstract
Meniscus injuries can be highly debilitating and lead to knee osteoarthritis. Progenitor cells from the meniscus could be a superior cell type for meniscus repair and tissue-engineering. The purpose of this study is to characterize meniscus progenitor cells isolated by differential adhesion to fibronectin (FN-prog). Human osteoarthritic menisci were digested, and FN-prog were selected by differential adhesion to fibronectin. Multilineage differentiation, population doubling time, colony formation, and MSC surface markers were assessed in the FN-prog and the total meniscus population (Men). Colony formation was compared between outer and inner zone meniscus digest. Chondrogenic pellet cultures were performed for redifferentiation. FN-prog demonstrated multipotency. The outer zone FN-prog formed more colonies than the inner zone FN-prog. FN-prog displayed more colony formation and a higher proliferation rate than Men. FN-prog redifferentiated in pellet culture and mostly adhered to the MSC surface marker profile, except for HLA-DR receptor expression. This is the first study that demonstrates differential adhesion to fibronectin for the isolation of a progenitor-like population from the meniscus. The high proliferation rates and ability to form meniscus extracellular matrix upon redifferentiation, together with the broad availability of osteoarthritis meniscus tissue, make FN-prog a promising cell type for clinical translation in meniscus tissue-engineering.
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Affiliation(s)
- Jasmijn V. Korpershoek
- Department of Orthopedics, University Medical Center Utrecht, 3584 CX Utrecht, The Netherlands; (J.V.K.); (M.R.); (T.S.d.W.); (D.B.F.S.)
| | - Margot Rikkers
- Department of Orthopedics, University Medical Center Utrecht, 3584 CX Utrecht, The Netherlands; (J.V.K.); (M.R.); (T.S.d.W.); (D.B.F.S.)
| | - Tommy S. de Windt
- Department of Orthopedics, University Medical Center Utrecht, 3584 CX Utrecht, The Netherlands; (J.V.K.); (M.R.); (T.S.d.W.); (D.B.F.S.)
| | - Marianna A. Tryfonidou
- Department of Clinical Sciences, Faculty of Veterinary Medicine, Utrecht University, 3584 CL Utrecht, The Netherlands;
| | - Daniel B. F. Saris
- Department of Orthopedics, University Medical Center Utrecht, 3584 CX Utrecht, The Netherlands; (J.V.K.); (M.R.); (T.S.d.W.); (D.B.F.S.)
- Department of Orthopedic Surgery and Sports Medicine, Mayo Clinic, Rochester, MN 55905, USA
- Department of Reconstructive medicine, University of Twente, 7522 NB Enschede, The Netherlands
| | - Lucienne A. Vonk
- Department of Orthopedics, University Medical Center Utrecht, 3584 CX Utrecht, The Netherlands; (J.V.K.); (M.R.); (T.S.d.W.); (D.B.F.S.)
- Correspondence: ; Tel.: +49-0-3328-4346-25
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Hagmeijer MH, Korpershoek JV, Crispim JF, Chen LT, Jonkheijm P, Krych AJ, Saris DBF, Vonk LA. The regenerative effect of different growth factors and platelet lysate on meniscus cells and mesenchymal stromal cells and proof of concept with a functionalized meniscus implant. J Tissue Eng Regen Med 2021; 15:648-659. [PMID: 33982442 PMCID: PMC8362003 DOI: 10.1002/term.3218] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Revised: 01/04/2021] [Accepted: 05/06/2021] [Indexed: 12/11/2022]
Abstract
Meniscus regeneration could be enhanced by targeting meniscus cells and mesenchymal stromal cells (MSCs) with the right growth factors. Combining these growth factors with the Collagen Meniscus Implant (CMI®) could accelerate cell ingrowth and tissue formation in the implant and thereby improve clinical outcomes. Using a transwell migration assay and a micro-wound assay, the effect of insulin-like growth factor-1, platelet-derived growth factor (PDGF), vascular endothelial growth factor (VEGF), transforming growth factor beta 1 (TGF-β1), fibroblast growth factor, and platelet lysate (PL) on migration and proliferation of meniscus cells and MSCs was assessed. The formation of extracellular matrix under influence of the above-mentioned growth factors was assessed after 28 days of culture of both MSCs and meniscus cells. As a proof of concept, the CMI® was functionalized with a VEGF binding peptide and coated with platelet-rich plasma (PRP) for clinical application. Our results demonstrate that PDGF, TGF-β1, and PL stimulate migration, proliferation, and/or extracellular matrix production of meniscus cells and MSCs. Additionally, the CMI® was successfully functionalized with a VEGF binding peptide and PRP which increased migration of meniscus cell and MSC into the implant. This study demonstrates proof of concept of functionalizing the CMI® with growth factor binding peptides. A CMI® functionalized with the right growth factors holds great potential for meniscus replacement after partial meniscectomy.
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Affiliation(s)
- Michella H Hagmeijer
- Department of Orthopedics, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Jasmijn V Korpershoek
- Department of Orthopedics, University Medical Center Utrecht, Utrecht, The Netherlands
| | - João F Crispim
- Developmental Bioengineering, University of Twente, Enschede, The Netherlands.,Department of Molecules and Materials, MESA+ Institute for Nanotechnology, University of Twente, Enschede, The Netherlands
| | - Li-Ting Chen
- Department of Orthopedics, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Pascal Jonkheijm
- Department of Molecules and Materials, MESA+ Institute for Nanotechnology, University of Twente, Enschede, The Netherlands
| | - Aaron J Krych
- Department of Orthopedic Surgery and Sports Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - Daniel B F Saris
- Department of Orthopedics, University Medical Center Utrecht, Utrecht, The Netherlands.,Developmental Bioengineering, University of Twente, Enschede, The Netherlands.,Department of Orthopedic Surgery and Sports Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - Lucienne A Vonk
- Department of Orthopedics, University Medical Center Utrecht, Utrecht, The Netherlands
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7
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Korpershoek JV, Vonk LA, De Windt TS, Admiraal J, Kester EC, Van Egmond N, Saris DBF, Custers RJH. Intra-articular injection with Autologous Conditioned Plasma does not lead to a clinically relevant improvement of knee osteoarthritis: a prospective case series of 140 patients with 1-year follow-up. Acta Orthop 2020; 91:743-749. [PMID: 32698659 PMCID: PMC8023954 DOI: 10.1080/17453674.2020.1795366] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Background and purpose - Platelet-rich plasma (PRP) is broadly used in the treatment of knee osteoarthritis, but clinical outcomes are highly variable. We evaluated the effectiveness of intra-articular injections with Autologous Conditioned Plasma (ACP), a commercially available form of platelet-rich plasma, in a tertiary referral center. Second, we aimed to identify which patient factors are associated with clinical outcome. Patients and methods - 140 patients (158 knees) with knee osteoarthritis (Kellgren and Lawrence grade 0-4) were treated with 3 intra-articular injections of ACP. The Knee Injury and Osteoarthritis Outcome Score (KOOS), pain (Numeric Rating Scale; NRS), and general health (EuroQol 5 Dimensions; EQ5D) were assessed at baseline and 3, 6, and 12 months' follow-up. The effect of sex, age, BMI, Kellgren and Lawrence grade, history of knee trauma, and baseline KOOS on clinical outcome at 6 and 12 months was determined using linear regression. Results - Mean KOOS increased from 37 at baseline to 44 at 3 months, 45 at 6 months, and 43 at 12 months' follow-up. Mean NRS-pain decreased from 6.2 at baseline to 5.3 at 3 months, 5.2 at 6 months, and 5.3 at 12 months. EQ5D did not change significantly. There were no predictors of clinical outcome. Interpretation - ACP does not lead to a clinically relevant improvement (exceeding the minimal clinically important difference) in patients suffering from knee osteoarthritis. None of the investigated factors predicts clinical outcome.
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Affiliation(s)
| | | | | | - Jon Admiraal
- University Medical Center Utrecht, Utrecht, the Netherlands
| | - Esmee C Kester
- University Medical Center Utrecht, Utrecht, the Netherlands
| | | | - Daniël B F Saris
- University Medical Center Utrecht, Utrecht, the Netherlands
- Mayo Clinic, Rochester, USA
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8
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Korpershoek JV, de Windt TS, Vonk LA, Krych AJ, Saris DBF. Does Anterior Cruciate Ligament Reconstruction Protect the Meniscus and Its Repair? A Systematic Review. Orthop J Sports Med 2020; 8:2325967120933895. [PMID: 32782901 PMCID: PMC7388123 DOI: 10.1177/2325967120933895] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Accepted: 05/11/2020] [Indexed: 12/27/2022] Open
Abstract
Background: Anterior cruciate ligament (ACL) tear and meniscal injury often co-occur. The protective effect of early ACL reconstruction (ACLR) on meniscal injury and its repair is not clear. Critical literature review can support or change clinical strategies and identify gaps in the available evidence. Purpose: To assess the protective effect of ACLR on the meniscus and provide clinical guidelines for managing ACL tears and subsequent meniscal injury. We aimed to answer the following questions: (1) Does ACLR protect the meniscus from subsequent injury? (2) Does early ACLR reduce secondary meniscal injury compared with delayed ACLR? (3) Does ACLR protect the repaired meniscus? Study Design: Systematic review; Level of evidence, 4. Methods: A systematic review was performed through use of MEDLINE and Embase electronic databases according to the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) guidelines. Search terms included ACL, reconstruction, and meniscus. Studies describing primary ACLR and nonoperative treatment in adult patients were included, as well as studies indicating timing of ACLR. The included articles were assessed individually for risk of bias through use of the modified Cochrane Risk of Bias and MINORS (Methodological Index for Nonrandomized Studies) tools. Results: One level 2 randomized controlled trial and several level 3 and 4 studies indicated a protective effect of ACLR on meniscal injury compared with nonoperative treatment. There was weak (level 3) evidence of the protective effect of early ACLR on the meniscus. Meniscal repair failure was less frequent in patients with ACL reconstruction than in patients with ACL deficiency (level 4). Conclusion: The evidence collected in this review suggests a protective effect of ACLR for subsequent meniscal injury (level 2 evidence). ACLR should be performed within 3 months of injury (level 3 evidence). Meniscal injury requiring surgical repair in the ACL-deficient knee should be treated with repair accompanied by ACLR (level 3 evidence). The paucity of level 2 studies prevents the formation of guidelines based on level 1 evidence. There is a strong clinical need for randomized or prospective trials to provide guidelines on timing of ACLR and meniscal repair.
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Affiliation(s)
| | | | - Lucienne A Vonk
- University Medical Center Utrecht, Utrecht, the Netherlands.,CO.DON AG, Teltow, Germany
| | | | - Daniel B F Saris
- University Medical Center Utrecht, Utrecht, the Netherlands.,Mayo Clinic, Rochester, Minnesota, USA
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Korpershoek JV, de Windt TS, Hagmeijer MH, Vonk LA, Saris DBF. Cell-Based Meniscus Repair and Regeneration: At the Brink of Clinical Translation?: A Systematic Review of Preclinical Studies. Orthop J Sports Med 2017; 5:2325967117690131. [PMID: 28321424 PMCID: PMC5347439 DOI: 10.1177/2325967117690131] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Background: Meniscus damage can be caused by trauma or degeneration and is therefore common among patients of all ages. Repair or regeneration of the menisci could be of great importance not only for pain relief or regaining function but also to prevent degenerative disease and osteoarthritis. Current treatment does not offer consistent long-term improvement. Although preclinical research focusing on augmentation of meniscal tear repair and regeneration after meniscectomy is encouraging, clinical translation remains difficult. Purpose: To systematically evaluate the literature on in vivo meniscus regeneration and explore the optimal cell sources and conditions for clinical translation. We aimed at thorough evaluation of current evidence as well as clarifying the challenges for future preclinical and clinical studies. Study Design: Systematic review. Methods: A search was conducted using the electronic databases of MEDLINE, Embase, and the Cochrane Collaboration. Search terms included meniscus, regeneration, and cell-based. Results: After screening 81 articles based on title and abstract, 51 articles on in vivo meniscus regeneration could be included; 2 additional articles were identified from the references. Repair and regeneration of the meniscus has been described by intra-articular injection of multipotent mesenchymal stromal (stem) cells from adipose tissue, bone marrow, synovium, or meniscus or the use of these cell types in combination with implantable or injectable scaffolds. The use of fibrochondrocytes, chondrocytes, and transfected myoblasts for meniscus repair and regeneration is limited to the combination with different scaffolds. The comparative in vitro and in vivo studies mentioned in this review indicate that the use of allogeneic cells is as successful as the use of autologous cells. In addition, the implantation or injection of cell-seeded scaffolds increased tissue regeneration and led to better structural organization compared with scaffold implantation or injection of a scaffold alone. None of the studies mentioned in this review compare the effectiveness of different (cell-seeded) scaffolds. Conclusion: There is heterogeneity in animal models, cell types, and scaffolds used, and limited comparative studies are available. The comparative in vivo research that is currently available is insufficient to draw strong conclusions as to which cell type is the most promising. However, there is a vast amount of in vivo research on the use of different types of multipotent mesenchymal stromal (stem) cells in different experimental settings, and good results are reported in terms of tissue formation. None of these studies compare the effectiveness of different cell-scaffold combinations, making it hard to conclude which scaffold has the greatest potential.
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Affiliation(s)
- Jasmijn V Korpershoek
- Department of Orthopaedics, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Tommy S de Windt
- Department of Orthopaedics, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Michella H Hagmeijer
- Department of Orthopaedics, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Lucienne A Vonk
- Department of Orthopaedics, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Daniel B F Saris
- Department of Orthopaedics, University Medical Center Utrecht, Utrecht, The Netherlands.; MIRA Institute for Biomedical Technology and Technical Medicine, University of Twente, Enschede, The Netherlands
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