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Adhikari B, Stager MA, Collins EG, Fischenich KM, Olusoji J, Ruble AF, Payne KA, Krebs MD. Sustained release of MAPK14-targeting siRNA from polyelectrolyte complex hydrogels mitigates MSC osteogenesis in vitro with potential application in growth plate injury. J Biomed Mater Res A 2024. [PMID: 39145460 DOI: 10.1002/jbm.a.37784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 07/13/2024] [Accepted: 07/30/2024] [Indexed: 08/16/2024]
Abstract
The growth plate is a cartilage structure at the end of long bones which mediates growth in children. When fractured, the formation of bony repair tissue known as a "bony bar" can occur and cause limb deformities. There are currently no effective clinical solutions for the prevention of the bony bar formation or regeneration of healthy growth plate cartilage after a fracture. This study employs previously developed alginate/chitosan polyelectrolyte complex (PEC) hydrogels as a sustained release vehicle for the delivery of short-interfering RNA (siRNA). Specifically, the siRNA targets the p38-MAPK pathway in mesenchymal stem cells (MSCs) to prevent their osteogenic differentiation. In vitro experimental findings show sustained release of siRNA from the hydrogels for 6 months. Flow cytometry and confocal imaging indicate that the hydrogels release siRNA to effectively knockdown GFP expression over a sustained period. MAPK-14 targeting siRNA was used to knockdown the expression of MAPK-14 and correspondingly decrease the expression of other osteogenic genes in MSCs in vitro over the span of 21 days. These hydrogels were used in a rat model of growth plate injury to determine whether siMAPK-14 released from the gels could inhibit bony bar formation. No significant reduction of bony bar formation was seen in vivo at the one concentration of siRNA examined. This PEC hydrogel represents a significant advancement for siRNA sustained delivery, and presents an interesting potential therapeutic delivery system for growth plate injuries and other regenerative medicine applications.
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Affiliation(s)
- Bikram Adhikari
- Quantitative Biosciences and Bioengineering, Colorado School of Mines, Golden, Colorado, USA
| | - Michael A Stager
- Chemical and Biological Engineering, Colorado School of Mines, Golden, Colorado, USA
| | - Elise G Collins
- Chemical and Biological Engineering, Colorado School of Mines, Golden, Colorado, USA
| | - Kristine M Fischenich
- Department of Orthopedics, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Jesutomisin Olusoji
- Quantitative Biosciences and Bioengineering, Colorado School of Mines, Golden, Colorado, USA
| | - Ana Ferreira Ruble
- Department of Orthopedics, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Karin A Payne
- Department of Orthopedics, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Melissa D Krebs
- Quantitative Biosciences and Bioengineering, Colorado School of Mines, Golden, Colorado, USA
- Chemical and Biological Engineering, Colorado School of Mines, Golden, Colorado, USA
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2
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Panes C, Valdivia-Gandur I, Veuthey C, Sousa V, del Sol M, Beltrán V. Micro-Computed Tomography Analysis of Peri-Implant Bone Defects Exposed to a Peri-Implantitis Microcosm, with and without Bone Substitute, in a Rabbit Model: A Pilot Study. Bioengineering (Basel) 2024; 11:397. [PMID: 38671818 PMCID: PMC11048142 DOI: 10.3390/bioengineering11040397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2024] [Revised: 03/30/2024] [Accepted: 04/04/2024] [Indexed: 04/28/2024] Open
Abstract
Peri-implantitis is an inflammatory condition characterized by inflammation in the peri-implant connective tissue and a progressive loss of supporting bone; it is commonly associated with the presence of biofilms on the surface of the implant, which is an important factor in the development and progression of the disease. The objective of this study was to evaluate, using micro-CT, the bone regeneration of surgically created peri-implant defects exposed to a microcosm of peri-implantitis. Twenty-three adult New Zealand white rabbits were included in the study. Bone defects of 7 mm diameter were created in both tibiae, and a cap-shaped titanium device was placed in the center, counter-implanted with a peri-implantitis microcosm. The bone defects received a bone substitute and/or a resorbable synthetic PLGA membrane, according to random distribution. Euthanasia was performed 15 and 30 days postoperatively. Micro-CT was performed on all samples to quantify bone regeneration parameters. Bone regeneration of critical defects occurred in all experimental groups, with a significantly greater increase in cases that received bone graft treatment (p < 0.0001), in all measured parameters, at 15 and 30 days. No significant differences were observed in the different bone neoformation parameters between the groups that did not receive bone grafts (p > 0.05). In this experimental model, the presence of peri-implantitis microcosms was not a determining factor in the bone volume parameter, both in the groups that received regenerative treatment and in those that did not.
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Affiliation(s)
- Camila Panes
- Center of Excellence in Morphological and Surgical Studies (CEMyQ), School of Medicine, University of La Frontera, Temuco 4780000, Chile; (C.P.); (C.V.); (M.d.S.)
- PhD Program in Morphological Sciences, Universidad de La Frontera, Temuco 4780000, Chile
- Faculty of Dentistry, Universidad de La Frontera, Temuco 4780000, Chile
| | | | - Carlos Veuthey
- Center of Excellence in Morphological and Surgical Studies (CEMyQ), School of Medicine, University of La Frontera, Temuco 4780000, Chile; (C.P.); (C.V.); (M.d.S.)
- Faculty of Dentistry, Universidad de La Frontera, Temuco 4780000, Chile
| | - Vanessa Sousa
- Periodontology and Periodontal Medicine, Centre for Host-Microbiome Interactions, Faculty of Dentistry, Oral and Craniofacial Sciences, Kings College London, Guy’s and St Thomas’ NHS Foundation Trust, London SE1 9RT, UK;
| | - Mariano del Sol
- Center of Excellence in Morphological and Surgical Studies (CEMyQ), School of Medicine, University of La Frontera, Temuco 4780000, Chile; (C.P.); (C.V.); (M.d.S.)
| | - Víctor Beltrán
- Faculty of Dentistry, Universidad de La Frontera, Temuco 4780000, Chile
- Clinical Investigation and Dental Innovation Center, Dental School and Center for Translational Medicine, Universidad de La Frontera, Temuco 4780000, Chile
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3
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Wang X, Li Z, Liu J, Wang C, Bai H, Zhu X, Wang H, Wang Z, Liu H, Wang J. 3D-printed PCL scaffolds with anatomy-inspired bionic stratified structures for the treatment of growth plate injuries. Mater Today Bio 2023; 23:100833. [PMID: 37920293 PMCID: PMC10618519 DOI: 10.1016/j.mtbio.2023.100833] [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: 04/23/2023] [Revised: 07/27/2023] [Accepted: 10/14/2023] [Indexed: 11/04/2023] Open
Abstract
The growth plate is a cartilaginous tissue with three distinct zones. Resident chondrocytes are highly organized in a columnar structure, which is critical for the longitudinal growth of immature long bones. Once injured, the growth plate may potentially be replaced by bony bar formation and, consequently, cause limb abnormalities in children. It is well-known that the essential step in growth plate repair is the remolding of the organized structure of chondrocytes. To achieve this, we prepared an anatomy-inspired bionic Poly(ε-caprolactone) (PCL) scaffold with a stratified structure using three-dimensional (3D) printing technology. The bionic scaffold is engineered by surface modification of NaOH and collagen Ⅰ (COL Ⅰ) to promote cell adhesion. Moreover, chondrocytes and bone marrow mesenchymal stem cells (BMSCs) are loaded in the most suitable ratio of 1:3 for growth plate reconstruction. Based on the anatomical structure of the growth plate, the bionic scaffold is designed to have three regions, which are the small-, medium-, and large-pore-size regions. These pore sizes are used to induce BMSCs to differentiate into similar structures such as the growth plate. Remarkably, the X-ray and histological results also demonstrate that the cell-loaded stratified scaffold can successfully rebuild the structure of the growth plate and reduce limb abnormalities, including limb length discrepancies and angular deformities in vivo. This study provides a potential method of preparing a bioinspired stratified scaffold for the treatment of growth plate injuries.
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Affiliation(s)
- Xianggang Wang
- Orthopaedic Medical Center, The Second Hospital of Jilin University, Changchun, 130041, PR China
- Orthopaedic Research Institute of Jilin Province, Changchun, 130041, PR China
| | - Zuhao Li
- Orthopaedic Medical Center, The Second Hospital of Jilin University, Changchun, 130041, PR China
- Orthopaedic Research Institute of Jilin Province, Changchun, 130041, PR China
| | - Jiaqi Liu
- Orthopaedic Medical Center, The Second Hospital of Jilin University, Changchun, 130041, PR China
- Orthopaedic Research Institute of Jilin Province, Changchun, 130041, PR China
| | - Chenyu Wang
- Department of Plastic and Reconstructive Surgery, The First Hospital of Jilin University, Changchun, 130021, PR China
| | - Haotian Bai
- Orthopaedic Medical Center, The Second Hospital of Jilin University, Changchun, 130041, PR China
- Orthopaedic Research Institute of Jilin Province, Changchun, 130041, PR China
| | - Xiujie Zhu
- Orthopaedic Medical Center, The Second Hospital of Jilin University, Changchun, 130041, PR China
- Orthopaedic Research Institute of Jilin Province, Changchun, 130041, PR China
| | - Hui Wang
- Orthopaedic Medical Center, The Second Hospital of Jilin University, Changchun, 130041, PR China
- Orthopaedic Research Institute of Jilin Province, Changchun, 130041, PR China
| | - Zhonghan Wang
- Orthopaedic Medical Center, The Second Hospital of Jilin University, Changchun, 130041, PR China
- Orthopaedic Research Institute of Jilin Province, Changchun, 130041, PR China
| | - He Liu
- Orthopaedic Medical Center, The Second Hospital of Jilin University, Changchun, 130041, PR China
- Orthopaedic Research Institute of Jilin Province, Changchun, 130041, PR China
| | - Jincheng Wang
- Orthopaedic Medical Center, The Second Hospital of Jilin University, Changchun, 130041, PR China
- Orthopaedic Research Institute of Jilin Province, Changchun, 130041, PR China
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4
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Xiao H, Li M, Zhu G, Tan Q, Ye W, Wu J, Mei H, Yan A. The effectiveness of physeal bar resection with or without Hemi-Epiphysiodesis to treat partial growth arrest. BMC Musculoskelet Disord 2023; 24:77. [PMID: 36710347 PMCID: PMC9885557 DOI: 10.1186/s12891-023-06167-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/10/2022] [Accepted: 01/16/2023] [Indexed: 01/31/2023] Open
Abstract
PURPOSE To evaluate the outcomes of distal femoral, proximal tibial, and distal tibial physeal bar resection combined with or without the Hemi-Epiphysiodesis procedure and provide a better understanding of the application of physeal bar resection combined with Hemi-Epiphysiodesis procedure in the treatment of physeal bar growth arrest. METHODS We retrospectively reviewed the patients who suffered physeal bar and underwent physeal bar resection with or without the Hemi-Epiphysiodesis technique during 2010-2020. All were followed up for at least 2 years or to maturity. A modified mapping method was used to determine the area of a physeal bar by CT data. The aLDFA, aMPTA, aLDTA, MAD, and LLD were measured to assess the deformity of the lower limb. RESULTS In total, 19 patients were included in this study. The average age was 8.9 years (range 4.4 to 13.3 years old). During the follow-up, 4 (21.1%) patients had an angular change < 5°; 12 (63.2%) patients had angular deformity improvement > 5° averaging 10.0° (range 5.3° to 23.2°), and 3 (15.8%) patients had improvement of the angular deformity averaging 16.8° (range 7.4° to 27.1°). Eleven patients (57.9%) had significant MAD improvement. After surgery, we found that 7 (36.8%) patients had an LLD change of < 5 mm and were considered unchanged. Only 2 (15%) patients had an LLD improvement > 5 mm averaging 1.0 cm (range 0.7 to 1.3 cm), and 7 (36.8%) patients had increasing of LLD > 5 mm averaging 1.3 cm (range 0.5 to 2.5 cm). There were no postoperative fractures, infections, or intraoperative complications such as neurovascular injury. CONCLUSION Physeal bar resection combined with Hemi-epiphysiodesis is helpful for partial epiphysis growth arrest. Without statistically verifying, we still believe that patients with limited growth ability could benefit more from physeal bar resection combined with Hemi-epiphysiodesis.
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Affiliation(s)
- Han Xiao
- grid.440223.30000 0004 1772 5147Department of Pediatric Orthopaedics, Hunan Children’s Hospital, No 86 Ziyuan Road, Yuhua District, Hunan Province 410007 Changsha City, China ,The Pediatric Academy of University of South China, 410007 Changsha, Hunan China
| | - Miao Li
- grid.440223.30000 0004 1772 5147Department of Pediatric Orthopaedics, Hunan Children’s Hospital, No 86 Ziyuan Road, Yuhua District, Hunan Province 410007 Changsha City, China ,The Pediatric Academy of University of South China, 410007 Changsha, Hunan China
| | - Guanghui Zhu
- grid.440223.30000 0004 1772 5147Department of Pediatric Orthopaedics, Hunan Children’s Hospital, No 86 Ziyuan Road, Yuhua District, Hunan Province 410007 Changsha City, China ,The Pediatric Academy of University of South China, 410007 Changsha, Hunan China
| | - Qian Tan
- grid.440223.30000 0004 1772 5147Department of Pediatric Orthopaedics, Hunan Children’s Hospital, No 86 Ziyuan Road, Yuhua District, Hunan Province 410007 Changsha City, China ,The Pediatric Academy of University of South China, 410007 Changsha, Hunan China
| | - Weihua Ye
- grid.440223.30000 0004 1772 5147Department of Pediatric Orthopaedics, Hunan Children’s Hospital, No 86 Ziyuan Road, Yuhua District, Hunan Province 410007 Changsha City, China ,The Pediatric Academy of University of South China, 410007 Changsha, Hunan China
| | - Jiangyan Wu
- grid.440223.30000 0004 1772 5147Department of Pediatric Orthopaedics, Hunan Children’s Hospital, No 86 Ziyuan Road, Yuhua District, Hunan Province 410007 Changsha City, China ,The Pediatric Academy of University of South China, 410007 Changsha, Hunan China
| | - Haibo Mei
- grid.440223.30000 0004 1772 5147Department of Pediatric Orthopaedics, Hunan Children’s Hospital, No 86 Ziyuan Road, Yuhua District, Hunan Province 410007 Changsha City, China ,The Pediatric Academy of University of South China, 410007 Changsha, Hunan China
| | - An Yan
- grid.440223.30000 0004 1772 5147Department of Pediatric Orthopaedics, Hunan Children’s Hospital, No 86 Ziyuan Road, Yuhua District, Hunan Province 410007 Changsha City, China ,The Pediatric Academy of University of South China, 410007 Changsha, Hunan China
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5
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Yu Y, Fischenich KM, Schoonraad SA, Weatherford S, Uzcategui AC, Eckstein K, Muralidharan A, Crespo-Cuevas V, Rodriguez-Fontan F, Killgore JP, Li G, McLeod RR, Miller NH, Ferguson VL, Bryant SJ, Payne KA. A 3D printed mimetic composite for the treatment of growth plate injuries in a rabbit model. NPJ Regen Med 2022; 7:60. [PMID: 36261516 PMCID: PMC9581903 DOI: 10.1038/s41536-022-00256-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Accepted: 10/05/2022] [Indexed: 11/08/2022] Open
Abstract
Growth plate injuries affecting the pediatric population may cause unwanted bony repair tissue that leads to abnormal bone elongation. Clinical treatment involves bony bar resection and implantation of an interpositional material, but success is limited and the bony bar often reforms. No treatment attempts to regenerate the growth plate cartilage. Herein we develop a 3D printed growth plate mimetic composite as a potential regenerative medicine approach with the goal of preventing limb length discrepancies and inducing cartilage regeneration. A poly(ethylene glycol)-based resin was used with digital light processing to 3D print a mechanical support structure infilled with a soft cartilage-mimetic hydrogel containing chondrogenic cues. Our biomimetic composite has similar mechanical properties to native rabbit growth plate and induced chondrogenic differentiation of rabbit mesenchymal stromal cells in vitro. We evaluated its efficacy as a regenerative interpositional material applied after bony bar resection in a rabbit model of growth plate injury. Radiographic imaging was used to monitor limb length and tibial plateau angle, microcomputed tomography assessed bone morphology, and histology characterized the repair tissue that formed. Our 3D printed growth plate mimetic composite resulted in improved tibial lengthening compared to an untreated control, cartilage-mimetic hydrogel only condition, and a fat graft. However, in vivo the 3D printed growth plate mimetic composite did not show cartilage regeneration within the construct histologically. Nevertheless, this study demonstrates the feasibility of a 3D printed biomimetic composite to improve limb lengthening, a key functional outcome, supporting its further investigation as a treatment for growth plate injuries.
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Affiliation(s)
- Yangyi Yu
- Colorado Program for Musculoskeletal Research, Department of Orthopedics, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
- Shenzhen Key Laboratory of Musculoskeletal Tissue Reconstruction and Function Restoration, Department of Bone and Joint Surgery, Shenzhen People's Hospital (The Second Clinical Medical College Jinan University, The First Affiliated Hospital, Southern University of Science and Technology), Shenzhen, China
| | - Kristine M Fischenich
- Colorado Program for Musculoskeletal Research, Department of Orthopedics, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
- Department of Mechanical Engineering, University of Colorado Boulder, Boulder, CO, USA
| | - Sarah A Schoonraad
- Materials Science and Engineering Program, University of Colorado Boulder, Boulder, CO, USA
| | - Shane Weatherford
- Colorado Program for Musculoskeletal Research, Department of Orthopedics, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Asais Camila Uzcategui
- Materials Science and Engineering Program, University of Colorado Boulder, Boulder, CO, USA
| | - Kevin Eckstein
- Department of Mechanical Engineering, University of Colorado Boulder, Boulder, CO, USA
| | - Archish Muralidharan
- Materials Science and Engineering Program, University of Colorado Boulder, Boulder, CO, USA
| | - Victor Crespo-Cuevas
- Department of Mechanical Engineering, University of Colorado Boulder, Boulder, CO, USA
| | - Francisco Rodriguez-Fontan
- Colorado Program for Musculoskeletal Research, Department of Orthopedics, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Jason P Killgore
- Applied Chemicals and Materials Division (647), National Institute of Standards and Technology (NIST), Boulder, CO, USA
| | - Guangheng Li
- Shenzhen Key Laboratory of Musculoskeletal Tissue Reconstruction and Function Restoration, Department of Bone and Joint Surgery, Shenzhen People's Hospital (The Second Clinical Medical College Jinan University, The First Affiliated Hospital, Southern University of Science and Technology), Shenzhen, China
| | - Robert R McLeod
- Materials Science and Engineering Program, University of Colorado Boulder, Boulder, CO, USA
- Department of Electrical, Computer and Energy Engineering, University of Colorado Boulder, Boulder, CO, USA
| | - Nancy Hadley Miller
- Colorado Program for Musculoskeletal Research, Department of Orthopedics, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
- Musculoskeletal Research Center, Children's Hospital Colorado, Aurora, CO, USA
| | - Virginia L Ferguson
- Department of Mechanical Engineering, University of Colorado Boulder, Boulder, CO, USA
- Materials Science and Engineering Program, University of Colorado Boulder, Boulder, CO, USA
- BioFrontiers Institute, University of Colorado Boulder, Boulder, CO, USA
| | - Stephanie J Bryant
- Materials Science and Engineering Program, University of Colorado Boulder, Boulder, CO, USA
- BioFrontiers Institute, University of Colorado Boulder, Boulder, CO, USA
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, CO, USA
| | - Karin A Payne
- Colorado Program for Musculoskeletal Research, Department of Orthopedics, University of Colorado Anschutz Medical Campus, Aurora, CO, USA.
- Gates Center for Regenerative Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, USA.
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6
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Fan M, Wang Y, Liu Y, Qiang L, Guo R, Zhuang H, Zheng P. A new method for modeling rabbit growth plate injury for the study of tissue engineering scaffolds. Tissue Eng Part C Methods 2022; 28:489-497. [PMID: 35959744 DOI: 10.1089/ten.tec.2022.0105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Establishing a suitable animal model of growth plate injury is necessary to evaluate the effect of tissue engineering scaffolds on repairing the injured growth plate. However, the currently used animal models have limitations. Therefore in this study, we reported and evaluated a new modeling method termed the longitudinal disruption method, which is to make a longitudinal defect in the region of growth plate. In order to compare this new method with the traditional transverse disruption method, we constructed the models by both methods, respectively. To observe whether bone bridges were formed, histological sections were analyzed by HE and Masson staining at three weeks after modeling. The HE and Masson staining results showed the formation of bone bridges in both groups, implying that the two methods successfully injured the growth plate. However, it was unclear whether the exact injury to growth plate caused by both methods was consistent. Therefore, in order to evaluate the accuracy and precision of modeling method, the X-ray and micro-CT were performed immediately after modeling. The percentages of accurate defect position in the longitudinal and transverse modeling groups were 88.89% and 55.56%, respectively. The micro-CT results revealed irregularly shaped defect cross sections in the transverse modeling group, whereas the defects in the longitudinal modeling group had regular shapes. The mean defect areas were 10.06 ± 0.86 and 12.30 ± 2.13 mm2 in the longitudinal and transverse modeling groups, respectively, while the difference between the actual area and the expected area were -1.94 ± 0.86 mm2 and -7.70 ± 2.13 mm2, respectively, showing the high precision of this new method. Altogether, we successfully demonstrated a new method for establishing a rabbit model of growth plate injury,which provides a simple and rapid modeling process, good modeling effect, high modeling accuracy, and convenient scaffold implantation. The new method provides an effective animal model for tissue engineering research on the repair and regeneration of injured growth plate.
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Affiliation(s)
- Minjie Fan
- Children's Hospital of Nanjing Medical University, Nanjing, Jiangsu, China;
| | - Yiwei Wang
- Children's Hospital of Nanjing Medical University, Nanjing, Jiangsu, China;
| | - Yihao Liu
- Shanghai Jiao Tong University School of Medicine Affiliated Ninth People's Hospital, Shanghai, China;
| | - Lei Qiang
- Southwest Jiaotong University, Chengdu, Sichuan, China;
| | - Ruoyi Guo
- Children's Hospital of Nanjing Medical University, Nanjing, Jiangsu, China;
| | - Hanjie Zhuang
- Children's Hospital of Nanjing Medical University, Nanjing, Jiangsu, China;
| | - Pengfei Zheng
- Children's Hospital of Nanjing Medical University, No.8 Jiangdong South Road, Jianye District, Nanjing, Nanjing, China, 210008;
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7
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Bayrak A, Duramaz A, Kızılkaya C, Çelik M, Kural C, Altınay S, Kural A, Başaran SH. Comparison of two types of fixation for proximal tibial epiphysiodesis: An experimental study in a rabbit model. Jt Dis Relat Surg 2021; 32:468-477. [PMID: 34145826 PMCID: PMC8343849 DOI: 10.52312/jdrs.2021.80219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Accepted: 03/03/2021] [Indexed: 11/23/2022] Open
Abstract
Objectives
In this study, we describe a novel hemiepiphysiodesis technique to prevent implant-related perichondrial ring injury in a rabbit model. Materials and methods
Proximal tibial epiphyseal plates of a total of 16 white New Zealand rabbits were used for this animal model. The subjects were divided into three equal groups as follows: Group 1 (Kirschner wire [K-wire]/cerclage), Group 2 (8-plate) right-hind legs, Group 3 (Control) left hind legs. Using anteroposterior radiography, the medial slope angle (MSA), articular line-diaphyseal angle (ALDA), and the angle between screws of 8-plate in lateral X-ray tibial slope angle (TSA) were measured. The radiographs were taken early postoperative (Day 1) and on sacrification day (Week 8). The histological evaluation of the perichondrial ring was made on a 7-mm axial section that stained with Safranin O/fast green at X10 magnification. Results
In both K-wire and 8-plate groups, the early postoperative ALDA and TSA were greater than the sacrification ALDA and TSA (p=0.028 and p<0.001, respectively). The early postoperative MSA was lower than the sacrification MSA in groups, (p<0.001). The MSA in the control group was lower than the K-wire and 8-plate groups (p<0.001 and p=0.009; respectively). The perichondrial ring thickness of the K-wire group was greater than the 8-plate group in histological evaluation (p<0.001). Conclusion
Both of the K-wire and 8-plate groups showed similar angulation effects in the proximal tibia, although histologically less damage to the perichondrial ring was observed in the K-wire group, compared to the 8-plate group.
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Affiliation(s)
- Alkan Bayrak
- SBÜ Dr. Sadi Konuk Eğitim ve Araştırma Hastanesi Ortopedi ve Travmatoloji Kliniği, 34147 Bakırköy, İstanbul, Türkiye.
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8
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Wang X, Li Z, Wang C, Bai H, Wang Z, Liu Y, Bao Y, Ren M, Liu H, Wang J. Enlightenment of Growth Plate Regeneration Based on Cartilage Repair Theory: A Review. Front Bioeng Biotechnol 2021; 9:654087. [PMID: 34150725 PMCID: PMC8209549 DOI: 10.3389/fbioe.2021.654087] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Accepted: 05/10/2021] [Indexed: 01/21/2023] Open
Abstract
The growth plate (GP) is a cartilaginous region situated between the epiphysis and metaphysis at the end of the immature long bone, which is susceptible to mechanical damage because of its vulnerable structure. Due to the limited regeneration ability of the GP, current clinical treatment strategies (e.g., bone bridge resection and fat engraftment) always result in bone bridge formation, which will cause length discrepancy and angular deformity, thus making satisfactory outcomes difficult to achieve. The introduction of cartilage repair theory and cartilage tissue engineering technology may encourage novel therapeutic approaches for GP repair using tissue engineered GPs, including biocompatible scaffolds incorporated with appropriate seed cells and growth factors. In this review, we summarize the physiological structure of GPs, the pathological process, and repair phases of GP injuries, placing greater emphasis on advanced tissue engineering strategies for GP repair. Furthermore, we also propose that three-dimensional printing technology will play a significant role in this field in the future given its advantage of bionic replication of complex structures. We predict that tissue engineering strategies will offer a significant alternative to the management of GP injuries.
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Affiliation(s)
- Xianggang Wang
- Orthopaedic Medical Center, The Second Hospital of Jilin University, Changchun, China.,Orthopaedic Research Institute of Jilin Province, Changchun, China
| | - Zuhao Li
- Orthopaedic Medical Center, The Second Hospital of Jilin University, Changchun, China.,Orthopaedic Research Institute of Jilin Province, Changchun, China
| | - Chenyu Wang
- Department of Plastic and Reconstructive Surgery, The First Hospital of Jilin University, Changchun, China
| | - Haotian Bai
- Orthopaedic Medical Center, The Second Hospital of Jilin University, Changchun, China.,Orthopaedic Research Institute of Jilin Province, Changchun, China
| | - Zhonghan Wang
- Orthopaedic Medical Center, The Second Hospital of Jilin University, Changchun, China.,Orthopaedic Research Institute of Jilin Province, Changchun, China
| | - Yuzhe Liu
- Orthopaedic Medical Center, The Second Hospital of Jilin University, Changchun, China.,Orthopaedic Research Institute of Jilin Province, Changchun, China
| | - Yirui Bao
- Department of Orthopedics, Chinese PLA 965 Hospital, Jilin, China
| | - Ming Ren
- Orthopaedic Medical Center, The Second Hospital of Jilin University, Changchun, China.,Orthopaedic Research Institute of Jilin Province, Changchun, China
| | - He Liu
- Orthopaedic Medical Center, The Second Hospital of Jilin University, Changchun, China.,Orthopaedic Research Institute of Jilin Province, Changchun, China
| | - Jincheng Wang
- Orthopaedic Medical Center, The Second Hospital of Jilin University, Changchun, China.,Orthopaedic Research Institute of Jilin Province, Changchun, China
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