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Nie X, Shi Y, Wang L, Abudureheman W, Yang J, Lin C. Study on the mechanism of magnesium calcium alloys/mineralized collagen composites mediating macrophage polarization to promote bone repair. Heliyon 2024; 10:e30279. [PMID: 38711636 PMCID: PMC11070863 DOI: 10.1016/j.heliyon.2024.e30279] [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: 11/01/2023] [Revised: 04/22/2024] [Accepted: 04/23/2024] [Indexed: 05/08/2024] Open
Abstract
Magnesium-based composites are a focal point in biomaterials research. However, the rapid degradation rate of magnesium alloys does not align with the healing time of bone tissue. Additionally, the host reaction caused by magnesium implantation hampers its full osteogenic potential. To maintain an appropriate microenvironment, it is important to enhance both corrosion resistance and osteogenic activity of the magnesium matrix. In this study, a composite scaffold composed of mineralized collagen and magnesium alloy was utilized to investigate the regulatory effect of mineralized collagen on mouse macrophages and evaluate its impact on mouse bone marrow mesenchymal stem cells in terms of osteogenesis, immune response, and macrophage-induced osteogenic differentiation. This experiment examined the biocompatibility of mouse bone marrow mesenchymal stem cells and macrophage-induced osteogenic differentiation in vitro, and examined the expression levels of relevant pathways proteins. Magnesium calcium alloys/mineralized collagen exhibited extensive spreading, facilitated by broad and abundant pseudopodia that firmly adhered them to the material surface and promoted growth and pseudopodia formation. The findings revealed that magnesium calcium alloy/mineralized collagen scaffold materials induced osteogenic differentiation mainly through M2 polarization of macrophages. This effect was mainly mediated by promoting the integrin α2β1-FAK-ERK1/2 signaling pathways and inhibiting the RANK signaling pathways.
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Affiliation(s)
- Xiaojing Nie
- Department of Pathology, School of Basic Medical Sciences, Xinjiang Medical University, Urumqi, Xinjiang, 830000, PR China
| | - Yonghua Shi
- Department of Pathology, School of Basic Medical Sciences, Xinjiang Medical University, Urumqi, Xinjiang, 830000, PR China
| | - Lei Wang
- School of Public Health, Xinjiang Medical University, Urumqi, Xinjiang, 830000, PR China
| | - Wumidan Abudureheman
- Department of Pathology, School of Basic Medical Sciences, Xinjiang Medical University, Urumqi, Xinjiang, 830000, PR China
| | - Jingxin Yang
- Beijing Engineering Research Center of Smart Mechanical Innovation Design Service, Beijing Union University, No.4 Gongti North Road, Chaoyang District, Beijing, 100027, PR China
| | - Chen Lin
- Department of Pathology, School of Basic Medical Sciences, Xinjiang Medical University, Urumqi, Xinjiang, 830000, PR China
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2
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Zhao Y, Li Y, Wang B, Yao J, Fan Y, He P, Bai J, Wang C, Xue F, Chu C. An Injectable Magnesium-Based Cement Stimulated with NIR for Drug-Controlled Release and Osteogenic Potential. Adv Healthc Mater 2024:e2400207. [PMID: 38529833 DOI: 10.1002/adhm.202400207] [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: 01/18/2024] [Revised: 03/20/2024] [Indexed: 03/27/2024]
Abstract
Magnesium phosphate bone cement (MPC) has gained widespread usage in orthopedic implantation due to its fast-setting and high initial strength benefits. However, the simultaneous attainment of drug-controlled release and osteogenic potential in MPC remains a significant challenge. Herein, a strategy to create a smart injectable cement system using nanocontainers and chondroitin sulfate is proposed. It employs nanocontainers containing alendronate-loaded mesoporous silica nanoparticles, which are surface-modified with polypyrrole to control drug release in response to near-infrared (NIR) stimulation. The alendronate-incorporated cement (ACMPC) exhibits improved compressive strength (70.6 ± 5.9 MPa), prolonged setting time (913 s), and exceptional injectability (96.5% of injection rate and 242 s of injection time). It also shows the capability to prevent degradation, thus preserving mechanical properties. Under NIR irradiation, the cement shows good antibacterial properties due to the combined impact of hyperthermia, reactive oxygen species, and alendronate. Furthermore, the ACMPC (NIR) group displays good biocompatibility and osteogenesis capabilities, which also lead to an increase in alkaline phosphatase activity, extracellular matrix mineralization, and the upregulation of osteogenic genes. This research has significant implications for developing multifunctional biomaterials and clinical applications.
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Affiliation(s)
- Yanbin Zhao
- School of Materials Science and Engineering, Jiangsu Key Laboratory for Advanced Metallic Materials, Southeast University, Nanjing, 211189, China
| | - Yangyang Li
- School of Materials Science and Engineering, Jiangsu Key Laboratory for Advanced Metallic Materials, Southeast University, Nanjing, 211189, China
| | - Bin Wang
- Department of Orthopedics, Rudong People's Hospital, Nantong, 226400, China
| | - Junyan Yao
- School of Materials Science and Engineering, Jiangsu Key Laboratory for Advanced Metallic Materials, Southeast University, Nanjing, 211189, China
| | - Yue Fan
- School of Materials Science and Engineering, Jiangsu Key Laboratory for Advanced Metallic Materials, Southeast University, Nanjing, 211189, China
| | - Peng He
- Department of Orthopedics, The Affiliated Jinling Hospital of Nanjing Medical University, Nanjing, 211166, China
| | - Jing Bai
- School of Materials Science and Engineering, Jiangsu Key Laboratory for Advanced Metallic Materials, Southeast University, Nanjing, 211189, China
- Institute of Medical Devices (Suzhou), Southeast University, Suzhou, 215163, China
| | - Cheng Wang
- School of Materials Science and Engineering, Jiangsu Key Laboratory for Advanced Metallic Materials, Southeast University, Nanjing, 211189, China
| | - Feng Xue
- School of Materials Science and Engineering, Jiangsu Key Laboratory for Advanced Metallic Materials, Southeast University, Nanjing, 211189, China
| | - Chenglin Chu
- School of Materials Science and Engineering, Jiangsu Key Laboratory for Advanced Metallic Materials, Southeast University, Nanjing, 211189, China
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3
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Alsalhi A. Applications of selected polysaccharides and proteins in dentistry: A review. Int J Biol Macromol 2024; 260:129215. [PMID: 38185301 DOI: 10.1016/j.ijbiomac.2024.129215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 12/18/2023] [Accepted: 01/02/2024] [Indexed: 01/09/2024]
Abstract
In the last ten years, remarkable characteristics and a variety of functionalities have been created in biopolymeric materials for clinical dental applications. This review gives an overview of current knowledge of natural biopolymers (biological macromolecules) in terms of structural, functional, and property interactions. Natural biopolymers such as polysaccharides (chitosan, bacterial cellulose, hyaluronic acid, and alginate) and polypeptides (collagen and silk fibroin) have been discussed for dental uses. These biopolymers exhibit excellent properties alone and when employed with other composite molecules making them ideal for treatment of periodontitis, endodontics, dental pulp regeneration and oral wound healing. These biopolymers together with the composite materials exhibit better biocompatibility, inertness, elasticity and flexibility which makes them a leading candidate to be used for other dental applications like caries management, oral appliances, dentures, dental implants and oral surgeries.
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Affiliation(s)
- Abdullah Alsalhi
- Department of Pharmaceutics, College of Pharmacy, Jazan University, P.O. Box 114, Jazan 45142, Saudi Arabia.
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4
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Khomutova UV, Korzhova AG, Bryuzgina AA, Laput OA, Vasenina IV, Akhmadeev YH, Shugurov VV, Azhazha II, Shapovalova YG, Chernyavskii AV, Kurzina IA. Nitrogen Plasma Treatment of Composite Materials Based on Polylactic Acid and Hydroxyapatite. Polymers (Basel) 2024; 16:627. [PMID: 38475310 DOI: 10.3390/polym16050627] [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: 01/09/2024] [Revised: 02/13/2024] [Accepted: 02/22/2024] [Indexed: 03/14/2024] Open
Abstract
The effect of surface modification by an arc discharge plasma in a nitrogen flow with treatment durations of 5 and 10 min on the physicochemical properties and biocompatibility of the surface of composites based on polylactic acid and hydroxyapatite (PLA/HA) with different mass ratios (80/20, 70/30, 60/40) has been investigated. The aim of this work was to show the correlation between the changes of the physicochemical characteristics (chemical compound, morphology, wettability) of the surface layer of the PLA/HA composites and the cell viability (macrophages) in the presence of the plasma-modified materials. The dependence of alterations of the functional properties (wettability, biocompatibility) on the change in the chemical composition under the plasma exposure has been established. The chemical composition was studied using X-ray photoelectron spectroscopy (XPS), the surface morphology was researched with scanning electron microscopy (SEM), and the wettability of the composite's surface was analyzed by measuring the contact angle and surface energy calculation. In addition, the viability of macrophages was investigated when the macrophages from three donors interacted with a modified PLA/HA surface. It was found that the formation of the new functional groups, -C-N and N-C=O/C=O, improves the wettability of the surface of the composites and promotes the viability of macrophages in the presence of the composite materials. The fundamental principles for obtaining promising materials with the required properties for eliminating bone defects have been created.
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Affiliation(s)
- Ulyana V Khomutova
- Chemical Department, National Research Tomsk State University, 36 Lenin Ave., Tomsk 634050, Russia
| | - Alena G Korzhova
- Chemical Department, National Research Tomsk State University, 36 Lenin Ave., Tomsk 634050, Russia
| | - Anastasia A Bryuzgina
- Chemical Department, National Research Tomsk State University, 36 Lenin Ave., Tomsk 634050, Russia
| | - Olesya A Laput
- Chemical Department, National Research Tomsk State University, 36 Lenin Ave., Tomsk 634050, Russia
| | - Irina V Vasenina
- P.N. Lebedev Physical Institute, 53 Leninsky Prospekt, Moscow 119333, Russia
| | - Yuriy H Akhmadeev
- Institute of High Current Electronics, 2/3 Akademichesky Ave., Tomsk 634055, Russia
| | - Vladimir V Shugurov
- Institute of High Current Electronics, 2/3 Akademichesky Ave., Tomsk 634055, Russia
| | - Ivan I Azhazha
- Institute of High Current Electronics, 2/3 Akademichesky Ave., Tomsk 634055, Russia
| | - Yelena G Shapovalova
- Chemical Department, National Research Tomsk State University, 36 Lenin Ave., Tomsk 634050, Russia
| | - Aleksandr V Chernyavskii
- Nanocenter MIREA, MIREA-Russian Technological University, 78 Vernadskogo Ave., Moscow 119454, Russia
| | - Irina A Kurzina
- Chemical Department, National Research Tomsk State University, 36 Lenin Ave., Tomsk 634050, Russia
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5
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Shahriar SMS, Polavoram NS, Andrabi SM, Su Y, Lee D, Tran HQ, Schindler SJ, Xie J. Transforming layered 2D mats into multiphasic 3D nanofiber scaffolds with tailored gradient features for tissue regeneration. BMEMAT 2024; 2:e12065. [PMID: 38586163 PMCID: PMC10997325 DOI: 10.1002/bmm2.12065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Accepted: 11/27/2023] [Indexed: 04/09/2024]
Abstract
Multiphasic scaffolds with tailored gradient features hold significant promise for tissue regeneration applications. Herein, this work reports the transformation of two-dimensional (2D) layered fiber mats into three dimensional (3D) multiphasic scaffolds using a 'solids-of-revolution' inspired gas-foaming expansion technology. These scaffolds feature precise control over fiber alignment, pore size, and regional structure. Manipulating nanofiber mat layers and Pluronic F127 concentrations allows further customization of pore size and fiber alignment within different scaffold regions. The cellular response to multiphasic scaffolds demonstrates the number of cells migrated and proliferated onto the scaffolds are mainly dependent on the pore size rather than fiber alignment. In vivo subcutaneous implantation of multiphasic scaffolds to rats reveals substantial cell infiltration, neo tissue formation, collagen deposition, and new vessel formation within scaffolds, greatly surpassing the capabilities of traditional nanofiber mats. Histological examination indicates the importance of optimizing pore size and fiber alignment for promotion of cell infiltration and tissue regeneration. Overall, these scaffolds have potential applications in tissue modeling, studying tissue-tissue interactions, interface tissue engineering, and high-throughput screening for optimized tissue regeneration.
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Affiliation(s)
- S. M. Shatil Shahriar
- Department of Surgery – Transplant and Mary & Dick Holland Regenerative Medicine Program, College of Medicine, University of Nebraska Medical Center, Omaha, NE, 68198, USA
- Eppley Institute for Research in Cancer and Allied Diseases, College of Medicine, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Navatha Shree Polavoram
- Department of Surgery – Transplant and Mary & Dick Holland Regenerative Medicine Program, College of Medicine, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Syed Muntazir Andrabi
- Department of Surgery – Transplant and Mary & Dick Holland Regenerative Medicine Program, College of Medicine, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Yajuan Su
- Department of Surgery – Transplant and Mary & Dick Holland Regenerative Medicine Program, College of Medicine, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Donghee Lee
- Department of Surgery – Transplant and Mary & Dick Holland Regenerative Medicine Program, College of Medicine, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Huy Quang Tran
- Department of Surgery – Transplant and Mary & Dick Holland Regenerative Medicine Program, College of Medicine, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Samantha J. Schindler
- Department of Surgery – Transplant and Mary & Dick Holland Regenerative Medicine Program, College of Medicine, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Jingwei Xie
- Department of Surgery – Transplant and Mary & Dick Holland Regenerative Medicine Program, College of Medicine, University of Nebraska Medical Center, Omaha, NE, 68198, USA
- Department of Mechanical and Materials Engineering, University of Nebraska Lincoln, Lincoln, NE, 68588, USA
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6
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Zhang M, Xu F, Cao J, Dou Q, Wang J, Wang J, Yang L, Chen W. Research advances of nanomaterials for the acceleration of fracture healing. Bioact Mater 2024; 31:368-394. [PMID: 37663621 PMCID: PMC10474571 DOI: 10.1016/j.bioactmat.2023.08.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Revised: 08/15/2023] [Accepted: 08/15/2023] [Indexed: 09/05/2023] Open
Abstract
The bone fracture cases have been increasing yearly, accompanied by the increased number of patients experiencing non-union or delayed union after their bone fracture. Although clinical materials facilitate fracture healing (e.g., metallic and composite materials), they cannot fulfill the requirements due to the slow degradation rate, limited osteogenic activity, inadequate osseointegration ability, and suboptimal mechanical properties. Since early 2000, nanomaterials successfully mimic the nanoscale features of bones and offer unique properties, receiving extensive attention. This paper reviews the achievements of nanomaterials in treating bone fracture (e.g., the intrinsic properties of nanomaterials, nanomaterials for bone defect filling, and nanoscale drug delivery systems in treating fracture delayed union). Furthermore, we discuss the perspectives on the challenges and future directions of developing nanomaterials to accelerate fracture healing.
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Affiliation(s)
- Mo Zhang
- School of Pharmacy, Key Laboratory of Innovative Drug Development and Evaluation, Hebei Medical University, Shijiazhuang, 050017, PR China
| | - Fan Xu
- School of Pharmacy, Key Laboratory of Innovative Drug Development and Evaluation, Hebei Medical University, Shijiazhuang, 050017, PR China
| | - Jingcheng Cao
- Department of Orthopaedic Surgery, The Third Hospital of Hebei Medical University, No.139 Ziqiang Road, Shijiazhuang, 050051, PR China
- Key Laboratory of Biomechanics of Hebei Province, Orthopaedic Research Institution of Hebei Province, No.139 Ziqiang Road, Shijiazhuang, 050051, PR China
- NHC Key Laboratory of Intelligent Orthopaedic Equipment, The Third Hospital of Hebei Medical University, No.139 Ziqiang Road, Shijiazhuang, 050051, PR China
| | - Qingqing Dou
- School of Pharmacy, Key Laboratory of Innovative Drug Development and Evaluation, Hebei Medical University, Shijiazhuang, 050017, PR China
| | - Juan Wang
- Department of Orthopaedic Surgery, The Third Hospital of Hebei Medical University, No.139 Ziqiang Road, Shijiazhuang, 050051, PR China
- Key Laboratory of Biomechanics of Hebei Province, Orthopaedic Research Institution of Hebei Province, No.139 Ziqiang Road, Shijiazhuang, 050051, PR China
- NHC Key Laboratory of Intelligent Orthopaedic Equipment, The Third Hospital of Hebei Medical University, No.139 Ziqiang Road, Shijiazhuang, 050051, PR China
| | - Jing Wang
- School of Pharmacy, Key Laboratory of Innovative Drug Development and Evaluation, Hebei Medical University, Shijiazhuang, 050017, PR China
| | - Lei Yang
- Center for Health Sciences and Engineering, Hebei Key Laboratory of Biomaterials and Smart Theranostics, School of Health Sciences and Biomedical Engineering, Hebei University of Technology, Tianjin, 300131, PR China
| | - Wei Chen
- Department of Orthopaedic Surgery, The Third Hospital of Hebei Medical University, No.139 Ziqiang Road, Shijiazhuang, 050051, PR China
- Key Laboratory of Biomechanics of Hebei Province, Orthopaedic Research Institution of Hebei Province, No.139 Ziqiang Road, Shijiazhuang, 050051, PR China
- NHC Key Laboratory of Intelligent Orthopaedic Equipment, The Third Hospital of Hebei Medical University, No.139 Ziqiang Road, Shijiazhuang, 050051, PR China
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7
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Rossi N, Hadad H, Bejar-Chapa M, Peretti GM, Randolph MA, Redmond RW, Guastaldi FPS. Bone Marrow Stem Cells with Tissue-Engineered Scaffolds for Large Bone Segmental Defects: A Systematic Review. TISSUE ENGINEERING. PART B, REVIEWS 2023; 29:457-472. [PMID: 36905366 DOI: 10.1089/ten.teb.2022.0213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/12/2023]
Abstract
Critical-sized bone defects (CSBDs) represent a significant clinical challenge, stimulating researchers to seek new methods for successful bone reconstruction. The aim of this systematic review is to assess whether bone marrow stem cells (BMSCs) combined with tissue-engineered scaffolds have demonstrated improved bone regeneration in the treatment of CSBD in large preclinical animal models. A search of electronic databases (PubMed, Embase, Web of Science, and Cochrane Library) focused on in vivo large animal studies identified 10 articles according to the following inclusion criteria: (1) in vivo large animal models with segmental bone defects; (2) treatment with tissue-engineered scaffolds combined with BMSCs; (3) the presence of a control group; and (4) a minimum of a histological analysis outcome. Animal research: reporting of in Vivo Experiments guidelines were used for quality assessment, and Systematic Review Center for Laboratory animal Experimentation's risk of bias tool was used to define internal validity. The results demonstrated that tissue-engineered scaffolds, either from autografts or allografts, when combined with BMSCs provide improved bone mineralization and bone formation, including a critical role in the remodeling phase of bone healing. BMSC-seeded scaffolds showed improved biomechanical properties and microarchitecture properties of the regenerated bone when compared with untreated and scaffold-alone groups. This review highlights the efficacy of tissue engineering strategies for the repair of extensive bone defects in preclinical large-animal models. In particular, the use of mesenchymal stem cells, combined with bioscaffolds, seems to be a successful method in comparison to cell-free scaffolds.
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Affiliation(s)
- Nicolò Rossi
- Wellman Center for Photomedicine and Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
- Division of Plastic and Reconstructive Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Henrique Hadad
- Skeletal Biology Research Center, Department of Oral and Maxillofacial Surgery, Massachusetts General Hospital, Harvard School of Dental Medicine, Boston, Massachusetts, USA
| | - Maria Bejar-Chapa
- Division of Plastic and Reconstructive Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Giuseppe M Peretti
- Department of Biomedical Sciences for Health, University of Milan, Milan, Italy
| | - Mark A Randolph
- Division of Plastic and Reconstructive Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Robert W Redmond
- Wellman Center for Photomedicine and Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Fernando P S Guastaldi
- Skeletal Biology Research Center, Department of Oral and Maxillofacial Surgery, Massachusetts General Hospital, Harvard School of Dental Medicine, Boston, Massachusetts, USA
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8
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Shi TL, Zhang YF, Yao MX, Li C, Wang HC, Ren C, Bai JS, Cui X, Chen W. Global trends and hot topics in clinical applications of perovskite materials: a bibliometric analysis. BIOMATERIALS TRANSLATIONAL 2023; 4:131-141. [PMID: 38283088 PMCID: PMC10817784 DOI: 10.12336/biomatertransl.2023.03.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 09/09/2023] [Accepted: 09/12/2023] [Indexed: 01/30/2024]
Abstract
In recent years, perovskite has received increasing attention in the medical field. However, there has been a lack of related bibliometric analysis in this research field. This study aims to analyse the research status and hot topics of perovskite in the medical field from a bibliometric perspective and explore the research direction of perovskite. This study collected 1852 records of perovskite research in the medical field from 1983 to 2022 in the Web of Science (WOS) database. The country, institution, journal, cited references, and keywords were analysed using CiteSpace, VOS viewer, and Bibliometrix software. The number of articles related to perovskite research in the medical field has been increasing every year. China and USA have published the most papers and are the main forces in this research field. The University of London Imperial College of Science, Technology, and Medicine is the most active institution and has contributed the most publications. ACS Applied Materials & Interfaces is the most prolific journal in this field. "Medical electronic devices", "X-rays", and "piezoelectric materials" are the most researched directions of perovskite in the medical field. "Performance", "perovskite", and "solar cells" are the most frequently used keywords in this field. Advanced Materials is the most relevant and academically influential journal for perovskite research. Halide perovskites have been a hot topic in this field in recent years and will be a future research trend. X-ray, electronic medical equipment, and medical stents are the main research directions.
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Affiliation(s)
- Tai-Long Shi
- Department of Orthopaedic Surgery, Third Hospital of Hebei Medical University, Shijiazhuang, Hebei Province, China
- Key Laboratory of Biomechanics of Hebei Province, Shijiazhuang, Hebei Province, China
- NHC Key Laboratory of Intelligent Orthopaedic Equipment, Shijiazhuang, Hebei Province, China
| | - Yi-Fan Zhang
- Department of Orthopaedic Surgery, Third Hospital of Hebei Medical University, Shijiazhuang, Hebei Province, China
- Key Laboratory of Biomechanics of Hebei Province, Shijiazhuang, Hebei Province, China
- NHC Key Laboratory of Intelligent Orthopaedic Equipment, Shijiazhuang, Hebei Province, China
| | - Meng-Xuan Yao
- Department of Orthopaedic Surgery, Third Hospital of Hebei Medical University, Shijiazhuang, Hebei Province, China
- Key Laboratory of Biomechanics of Hebei Province, Shijiazhuang, Hebei Province, China
- NHC Key Laboratory of Intelligent Orthopaedic Equipment, Shijiazhuang, Hebei Province, China
| | - Chao Li
- Department of Orthopaedic Surgery, Third Hospital of Hebei Medical University, Shijiazhuang, Hebei Province, China
- Key Laboratory of Biomechanics of Hebei Province, Shijiazhuang, Hebei Province, China
- NHC Key Laboratory of Intelligent Orthopaedic Equipment, Shijiazhuang, Hebei Province, China
| | - Hai-Cheng Wang
- Department of Orthopaedic Surgery, Third Hospital of Hebei Medical University, Shijiazhuang, Hebei Province, China
- Key Laboratory of Biomechanics of Hebei Province, Shijiazhuang, Hebei Province, China
- NHC Key Laboratory of Intelligent Orthopaedic Equipment, Shijiazhuang, Hebei Province, China
| | - Chuan Ren
- Department of Orthopaedic Surgery, Third Hospital of Hebei Medical University, Shijiazhuang, Hebei Province, China
- Key Laboratory of Biomechanics of Hebei Province, Shijiazhuang, Hebei Province, China
- NHC Key Laboratory of Intelligent Orthopaedic Equipment, Shijiazhuang, Hebei Province, China
| | - Jun-Sheng Bai
- Department of Orthopaedic Surgery, Third Hospital of Hebei Medical University, Shijiazhuang, Hebei Province, China
- Key Laboratory of Biomechanics of Hebei Province, Shijiazhuang, Hebei Province, China
- NHC Key Laboratory of Intelligent Orthopaedic Equipment, Shijiazhuang, Hebei Province, China
| | - Xu Cui
- Center for Human Tissues and Organs Degeneration, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong Province, China
| | - Wei Chen
- Department of Orthopaedic Surgery, Third Hospital of Hebei Medical University, Shijiazhuang, Hebei Province, China
- Key Laboratory of Biomechanics of Hebei Province, Shijiazhuang, Hebei Province, China
- NHC Key Laboratory of Intelligent Orthopaedic Equipment, Shijiazhuang, Hebei Province, China
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9
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Egorikhina MN, Timofeeva LB, Linkova DD, Rubtsova YP, Bugrova ML, Charykova IN, Ryabkov MG, Kobyakova II, Farafontova EA, Aleynik DY. Biocompatibility Study of Hydrogel Biopolymer Scaffold with Encapsulated Mesenchymal Stem Cells. Polymers (Basel) 2023; 15:polym15061337. [PMID: 36987118 PMCID: PMC10052012 DOI: 10.3390/polym15061337] [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: 01/12/2023] [Revised: 02/21/2023] [Accepted: 02/27/2023] [Indexed: 03/30/2023] Open
Abstract
One of the key and actively developing areas of regenerative medicine is tissue-engineering. There is no doubt that the use of tissue-engineering products can have a significant impact on the efficiency of repair of damaged tissues and organs. However, before being used in clinical practice, tissue-engineering products require thorough preclinical studies to confirm their safety and efficacy, both with in vitro models and in experimental animals. This paper presents preclinical studies of a tissue-engineered construct, based on a hydrogel biopolymer scaffold carrier (consisting of blood plasma cryoprecipitate and collagen) with encapsulated mesenchymal stem cells, to evaluate its biocompatibility in vivo. The results were analyzed using histomorphology and transmission electron microscopy. It was shown that when implanted into animal (rat) tissues, the implants were completely replaced by connective tissue components. We also confirmed that no acute inflammation occurred in response to the scaffold implantation. The observed processes of cell recruitment to the scaffold from the surrounding tissues, the active formation of collagen fibers and the absence of acute inflammation testified that the regeneration process was ongoing in the implantation area. Thus, the presented tissue-engineered construct shows promise for becoming an effective tool for regenerative medicine in the future and may be used, in particular, to repair soft tissues.
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Affiliation(s)
- Marfa N Egorikhina
- Federal State Budgetary Educational Institution of Higher Education, Privolzhsky Research Medical University of the Ministry of Health of the Russian Federation, 603005 Nizhny Novgorod, Russia
| | - Lidia B Timofeeva
- Federal State Budgetary Educational Institution of Higher Education, Privolzhsky Research Medical University of the Ministry of Health of the Russian Federation, 603005 Nizhny Novgorod, Russia
| | - Daria D Linkova
- Federal State Budgetary Educational Institution of Higher Education, Privolzhsky Research Medical University of the Ministry of Health of the Russian Federation, 603005 Nizhny Novgorod, Russia
| | - Yulia P Rubtsova
- Federal State Budgetary Educational Institution of Higher Education, Privolzhsky Research Medical University of the Ministry of Health of the Russian Federation, 603005 Nizhny Novgorod, Russia
| | - Marina L Bugrova
- Federal State Budgetary Educational Institution of Higher Education, Privolzhsky Research Medical University of the Ministry of Health of the Russian Federation, 603005 Nizhny Novgorod, Russia
| | - Irina N Charykova
- Federal State Budgetary Educational Institution of Higher Education, Privolzhsky Research Medical University of the Ministry of Health of the Russian Federation, 603005 Nizhny Novgorod, Russia
| | - Maxim G Ryabkov
- Federal State Budgetary Educational Institution of Higher Education, Privolzhsky Research Medical University of the Ministry of Health of the Russian Federation, 603005 Nizhny Novgorod, Russia
| | - Irina I Kobyakova
- Federal State Budgetary Educational Institution of Higher Education, Privolzhsky Research Medical University of the Ministry of Health of the Russian Federation, 603005 Nizhny Novgorod, Russia
| | - Ekaterina A Farafontova
- Federal State Budgetary Educational Institution of Higher Education, Privolzhsky Research Medical University of the Ministry of Health of the Russian Federation, 603005 Nizhny Novgorod, Russia
| | - Diana Y Aleynik
- Federal State Budgetary Educational Institution of Higher Education, Privolzhsky Research Medical University of the Ministry of Health of the Russian Federation, 603005 Nizhny Novgorod, Russia
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10
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Zhu W, Li C, Yao M, Wang X, Wang J, Zhang W, Chen W, Lv H. Advances in osseointegration of biomimetic mineralized collagen and inorganic metal elements of natural bone for bone repair. Regen Biomater 2023; 10:rbad030. [PMID: 37181680 PMCID: PMC10172150 DOI: 10.1093/rb/rbad030] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2022] [Revised: 02/24/2023] [Accepted: 03/16/2023] [Indexed: 05/16/2023] Open
Abstract
At this stage, bone defects caused by trauma, infection, tumor, or congenital diseases are generally filled with autologous bone or allogeneic bone transplantation, but this treatment method has limited sources, potential disease transmission and other problems. Ideal bone-graft materials remain continuously explored, and bone defect reconstruction remains a significant challenge. Mineralized collagen prepared by bionic mineralization combining organic polymer collagen with inorganic mineral calcium phosphate can effectively imitate the composition and hierarchical structure of natural bone and has good application value in bone repair materials. Magnesium, strontium, zinc and other inorganic components not only can activate relevant signaling pathways to induce differentiation of osteogenic precursor cells but also stimulate other core biological processes of bone tissue growth and play an important role in natural bone growth, and bone repair and reconstruction. This study reviewed the advances in hydroxyapatite/collagen composite scaffolds and osseointegration with natural bone inorganic components, such as magnesium, strontium and zinc.
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Affiliation(s)
| | | | - Mengxuan Yao
- Department of Orthopaedic Surgery, The Third Hospital of Hebei Medical University, Shijiazhuang 050051, P.R. China
- Key Laboratory of Biomechanics of Hebei Province, Orthopaedic Research Institution of Hebei Province, Shijiazhuang 050051, P.R. China
- NHC Key Laboratory of Intelligent Orthopaedic Equipment, The Third Hospital of Hebei Medical University, Shijiazhuang 050051, P.R. China
| | - Xiumei Wang
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, P.R. China
| | - Juan Wang
- Department of Orthopaedic Surgery, The Third Hospital of Hebei Medical University, Shijiazhuang 050051, P.R. China
- Key Laboratory of Biomechanics of Hebei Province, Orthopaedic Research Institution of Hebei Province, Shijiazhuang 050051, P.R. China
- NHC Key Laboratory of Intelligent Orthopaedic Equipment, The Third Hospital of Hebei Medical University, Shijiazhuang 050051, P.R. China
| | - Wei Zhang
- Correspondence address. E-mail: (W.Z.); (W.C.); (H.L.)
| | - Wei Chen
- Correspondence address. E-mail: (W.Z.); (W.C.); (H.L.)
| | - Hongzhi Lv
- Correspondence address. E-mail: (W.Z.); (W.C.); (H.L.)
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11
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Yu H, Liu H, Shen Y, Ao Q. Synthetic biodegradable polymer materials in the repair of tumor-associated bone defects. Front Bioeng Biotechnol 2023; 11:1096525. [PMID: 36873359 PMCID: PMC9978220 DOI: 10.3389/fbioe.2023.1096525] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2022] [Accepted: 01/20/2023] [Indexed: 02/18/2023] Open
Abstract
The repair and reconstruction of bone defects and the inhibition of local tumor recurrence are two common problems in bone surgery. The rapid development of biomedicine, clinical medicine, and material science has promoted the research and development of synthetic degradable polymer anti-tumor bone repair materials. Compared with natural polymer materials, synthetic polymer materials have machinable mechanical properties, highly controllable degradation properties, and uniform structure, which has attracted more attention from researchers. In addition, adopting new technologies is an effective strategy for developing new bone repair materials. The application of nanotechnology, 3D printing technology, and genetic engineering technology is beneficial to modify the performance of materials. Photothermal therapy, magnetothermal therapy, and anti-tumor drug delivery may provide new directions for the research and development of anti-tumor bone repair materials. This review focuses on recent advances in synthetic biodegradable polymer bone repair materials and their antitumor properties.
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Affiliation(s)
- Honghao Yu
- Departments of Spine Surgery, Shengjing Hospital of China Medical University, Shenyang, China.,Department of Tissue Engineering, China Medical University, Shenyang, China
| | - Haifeng Liu
- Departments of Neurosurgery, Shengjing Hospital of China Medical University, Shenyang, China
| | - Yuan Shen
- Departments of Spine Surgery, Shengjing Hospital of China Medical University, Shenyang, China
| | - Qiang Ao
- Department of Tissue Engineering, China Medical University, Shenyang, China.,NMPA Key Laboratory for Quality Research and Control of Tissue Regenerative Biomaterial and Institute of Regulatory Science for Medical Device and National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, China
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12
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Lv B, Lu L, Hu L, Cheng P, Hu Y, Xie X, Dai G, Mi B, Liu X, Liu G. Recent advances in GelMA hydrogel transplantation for musculoskeletal disorders and related disease treatment. Theranostics 2023; 13:2015-2039. [PMID: 37064871 PMCID: PMC10091878 DOI: 10.7150/thno.80615] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Accepted: 03/06/2023] [Indexed: 04/18/2023] Open
Abstract
Increasing data reveals that gelatin that has been methacrylated is involved in a variety of physiologic processes that are important for therapeutic interventions. Gelatin methacryloyl (GelMA) hydrogel is a highly attractive hydrogels-based bioink because of its good biocompatibility, low cost, and photo-cross-linking structure that is useful for cell survivability and cell monitoring. Methacrylated gelatin (GelMA) has established itself as a typical hydrogel composition with extensive biomedical applications. Recent advances in GelMA have focused on integrating them with bioactive and functional nanomaterials, with the goal of improving GelMA's physical, chemical, and biological properties. GelMA's ability to modify characteristics due to the synthesis technique also makes it a good choice for soft and hard tissues. GelMA has been established to become an independent or supplementary technology for musculoskeletal problems. Here, we systematically review mechanism-of-action, therapeutic uses, and challenges and future direction of GelMA in musculoskeletal disorders. We give an overview of GelMA nanocomposite for different applications in musculoskeletal disorders, such as osteoarthritis, intervertebral disc degeneration, bone regeneration, tendon disorders and so on.
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Affiliation(s)
- Bin Lv
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030 P.R. China
| | - Li Lu
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030 P.R. China
| | - Liangcong Hu
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030 P.R. China
| | - Peng Cheng
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030 P.R. China
| | - Yiqiang Hu
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030 P.R. China
| | - Xudong Xie
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030 P.R. China
| | - Guandong Dai
- Pingshan District People's Hospital of Shenzhen, Pingshan General Hospital of Southern Medical University, Shenzhen, 518118 P.R. China
| | - Bobin Mi
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030 P.R. China
- ✉ Corresponding author: Bobin Mi, ; Xin Liu, ; Guohui Liu,
| | - Xin Liu
- Third School of Clinical Medicine, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, 210028 P.R. China
- ✉ Corresponding author: Bobin Mi, ; Xin Liu, ; Guohui Liu,
| | - Guohui Liu
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030 P.R. China
- ✉ Corresponding author: Bobin Mi, ; Xin Liu, ; Guohui Liu,
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13
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Li C, Du Y, Zhang T, Wang H, Hou Z, Zhang Y, Cui W, Chen W. "Genetic scissors" CRISPR/Cas9 genome editing cutting-edge biocarrier technology for bone and cartilage repair. Bioact Mater 2022; 22:254-273. [PMID: 36263098 PMCID: PMC9554751 DOI: 10.1016/j.bioactmat.2022.09.026] [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: 07/22/2022] [Revised: 09/13/2022] [Accepted: 09/28/2022] [Indexed: 12/02/2022] Open
Abstract
CRISPR/Cas9 is a revolutionary genome editing technology with the tremendous advantages such as precisely targeting/shearing ability, low cost and convenient operation, becoming an efficient and indispensable tool in biological research. As a disruptive technique, CRISPR/Cas9 genome editing has a great potential to realize a future breakthrough in the clinical bone and cartilage repairing as well. This review highlights the research status of CRISPR/Cas9 system in bone and cartilage repair, illustrates its mechanism for promoting osteogenesis and chondrogenesis, and explores the development tendency of CRISPR/Cas9 in bone and cartilage repair to overcome the current limitations.
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Affiliation(s)
- Chao Li
- Department of Orthopaedics, The Third Hospital of Hebei Medical University, Orthopaedic Research Institution of Hebei Province, NHC Key Laboratory of Intelligent Orthopaedic Equipment, No.139 Ziqiang Road, Shijiazhuang, 050051, PR China,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, PR China
| | - Yawei Du
- 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, PR China
| | - Tongtong Zhang
- Department of Orthopaedics, The Third Hospital of Hebei Medical University, Orthopaedic Research Institution of Hebei Province, NHC Key Laboratory of Intelligent Orthopaedic Equipment, No.139 Ziqiang Road, Shijiazhuang, 050051, PR China
| | - Haoran Wang
- Department of Orthopaedics, The Third Hospital of Hebei Medical University, Orthopaedic Research Institution of Hebei Province, NHC Key Laboratory of Intelligent Orthopaedic Equipment, No.139 Ziqiang Road, Shijiazhuang, 050051, PR China,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, PR China
| | - Zhiyong Hou
- Department of Orthopaedics, The Third Hospital of Hebei Medical University, Orthopaedic Research Institution of Hebei Province, NHC Key Laboratory of Intelligent Orthopaedic Equipment, No.139 Ziqiang Road, Shijiazhuang, 050051, PR China
| | - Yingze Zhang
- Department of Orthopaedics, The Third Hospital of Hebei Medical University, Orthopaedic Research Institution of Hebei Province, NHC Key Laboratory of Intelligent Orthopaedic Equipment, No.139 Ziqiang Road, Shijiazhuang, 050051, PR 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, PR China,Corresponding author.
| | - Wei Chen
- Department of Orthopaedics, The Third Hospital of Hebei Medical University, Orthopaedic Research Institution of Hebei Province, NHC Key Laboratory of Intelligent Orthopaedic Equipment, No.139 Ziqiang Road, Shijiazhuang, 050051, PR China,Corresponding author.
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14
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Wang J, He M, Du M, Zhu C, Jiang Y, Zhuang Y, Qi L, Liu Z, Li Y, Liu L, Feng G, Wang D, Zhang L. Three‐dimensional printing
hydrogel scaffold with bioactivity and shape‐adaptability for potential application in irregular bone defect regeneration. J Appl Polym Sci 2022. [DOI: 10.1002/app.52831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Jing Wang
- Analytical and Testing Center Sichuan University Chengdu China
| | - Meiling He
- Analytical and Testing Center Sichuan University Chengdu China
| | - Meixuan Du
- Analytical and Testing Center Sichuan University Chengdu China
| | - Ce Zhu
- Department of Orthopedic Surgery and Orthopedic Research Institute West China Hospital, Sichuan University Chengdu China
| | - Yuling Jiang
- Analytical and Testing Center Sichuan University Chengdu China
| | - Yi Zhuang
- Analytical and Testing Center Sichuan University Chengdu China
| | - Lin Qi
- Analytical and Testing Center Sichuan University Chengdu China
| | - Zheng Liu
- Analytical and Testing Center Sichuan University Chengdu China
| | - Yubao Li
- Analytical and Testing Center Sichuan University Chengdu China
| | - Limin Liu
- Department of Orthopedic Surgery and Orthopedic Research Institute West China Hospital, Sichuan University Chengdu China
| | - Ganjun Feng
- Department of Orthopedic Surgery and Orthopedic Research Institute West China Hospital, Sichuan University Chengdu China
| | - Danqing Wang
- Department of Obstetrics and Gynecology West China Second University Hospital, Sichuan University Chengdu China
| | - Li Zhang
- Analytical and Testing Center Sichuan University Chengdu China
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15
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D’yachkov AN, Migalkin NS, Stogov MV, Soldatov YP, Dyuryagina OV, Tushina NV. Safety and Effectiveness of Using Double-Ended Allograft in the Repair of Large Defects of Bi-Epiphyseal Bones in Experiment. I.P. PAVLOV RUSSIAN MEDICAL BIOLOGICAL HERALD 2022; 30. [DOI: 10.17816/pavlovj100480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/03/2023]
Abstract
BACKGROUND: The repair of large defects in the long bones remains one of the most pressing problems in traumatology and orthopedics.
AIM: To evaluate the effectiveness and technological safety of the repair of large defects of the long bi-epiphyseal bones including the use of double-ended bone allografts to demarcate the defect cavity from the surrounding tissues and fixation of bone fragments using an external fixation device.
MATERIALS AND METHODS: Experiments were conducted on 14 adult nonpedigree male and female dogs aged 12 years. The double-ended allograft was used to demarcate the formed defect of the tibial bones at 1.5 diameter length of the shinbone. The bone fragments were fixed with Ilizarov apparatus adapted for experiments on dogs. The maximal follow-up period was 2 years after the surgery. In the dynamics of the experiment, life-time observations, X-ray examination, and laboratory control were conducted. After euthanasia, the implantation zone was examined histologically.
RESULTS: The visual signs of the restructure of the transplants were identified starting from day 35 after surgery. The bone regenerates in the defect zone completely formed within 3 months after the surgery. This permitted the removal of the external fixation apparatus in 3 months after the surgery. The restructuring of the newly formed part of the bone continued for 2 years after the operation. No significant changes in the laboratory parameters in the dynamics of the experiment were observed. No changes could be evaluated as negative phenomena. No serious unwanted events were recorded either.
CONCLUSION: The proposed technique for the repair of large defects of long bi-epiphyseal bones demonstrated safety and sufficient effectiveness in the speed of regeneration of the defect and quality of the bones formed.
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16
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Gehrke SA, Aramburú Júnior J, Treichel TLE, Rodriguez F, N de Aza P, Dedavid BA. Comparative evaluation of two collagen-based biomaterials with different compositions used for bone graft: An experimental animal study. J Appl Biomater Funct Mater 2022; 20:22808000221119650. [PMID: 35975914 DOI: 10.1177/22808000221119650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
A large number of materials with different compositions and shapes have been proposed and studied for the purpose of bone tissue regeneration. Collagen-based materials have shown promising results for this application, with improved physicochemical properties. The aim of the present in vivo animal study was to evaluate and compare two commercially available collagen-based biomaterials for bone regeneration, with these being implanted in circumferential bone defects created in the calvarium of rabbits. Twenty rabbits received bilateral parietal osteotomies, performed with the aid of a 6.5 mm diameter trephine. Two groups were created: the BC group, where the defect was filled with a scaffold composed of 90% bovine bone particles and 10% porcine collagen, and the EG group, where the defect was filled with a scaffold composed of 75% hydroxyapatite particles of bovine origin and 25% bovine collagen. Ten animals were sacrificed at 30 days and another 10 at 45 days after implantation, and the samples were processed and histologically analyzed. In the evaluations of the samples at 30 days, no important differences were found in the results. However, in the samples at 45 days after surgery, the EG group showed better results than the BC group samples, mainly in terms of the amount of bone matrix formation (P < 0.0001) and the volume in area measured in each sample, where the EG group had a value 65% higher than that in the BC group samples. Based on the results obtained, we conclude that the amount of collagen and the particle characteristics present in the composition of the scaffolds can directly influence the amount of neoformation and/or bone regeneration.
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Affiliation(s)
- Sergio Alexandre Gehrke
- Department of Research, Bioface/PgO/UCAM, Montevideo, Uruguay.,Department of Biotechnology. Universidad Católica de Murcia (UCAM), Murcia, Spain.,Instituto de Bioingenieria, Universidad Miguel Hernández, Elche (Alicante), Spain.,Department of Materials Engineering, Pontificia Universidade Católica do Rio Grande do Sul, Porto Alegre, Brazil
| | | | | | | | - Piedad N de Aza
- Instituto de Bioingenieria, Universidad Miguel Hernández, Elche (Alicante), Spain
| | - Berenice Anina Dedavid
- Department of Materials Engineering, Pontificia Universidade Católica do Rio Grande do Sul, Porto Alegre, Brazil
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