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Lin CC, Chiu JY. A novel γ-PGA composite gellan membrane containing glycerol for guided bone regeneration. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 118:111404. [PMID: 33255007 DOI: 10.1016/j.msec.2020.111404] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Revised: 08/03/2020] [Accepted: 08/11/2020] [Indexed: 11/19/2022]
Abstract
An ideal barrier membrane design should incorporate the function of a delivery vehicle for transporting drugs and osteoinductive factors to where the body is under inflammation. In the present study, a functional hydrogel-based barrier membrane is fabricated using calcium-form poly-γ-glutamic acid (γ-PGA) and glycerol blending into gellan gum. The concentration of the calcium-form poly-γ-glutamic acid (γ-PGA) and the glycerol ratio are studied for improving practicability in easy-handling and expanding the coverage area. Gellan gum-based membranes with uniformly distributed calcium aggregates are not only successfully manufactured but also providing excellent characteristics for protein adsorption, bioactivity, and bone cell maturation. Our composite gellan gum-based membranes were tested including to their morphology, mechanical properties, swelling behavior, protein adsorption, drug diffusion, and lysozyme degradation. The biocompatibility, proliferation, and osteoblastic response of membranes were examined by osteoblast-like (MG63) cells. Our results indicate that adequate physical cross-linking with γ-PGA improves the original mechanical properties and delays degradation. Growing glycerol ratio not only enhances the elongation at break and diffusion rate, but it also changes the tensile strength and the remaining weight. In vitro biocompatibility tests, an adequate ratio of γ-PGA modification significantly enhances the proliferation, the secretion of alkaline phosphatase (ALP) and mineralization. However, worth noting is the glycerol-modified membrane cannot bear a close resemblance with the non-glycerol group in the high level of osteoblastic response. In general, these tunable materials with biocompatibility, biodegradability, and positive osteoblastic responses were poised to be possible candidates for bone defect repair.
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Affiliation(s)
- Chi-Chang Lin
- Department of Chemical and Material Engineering, Tunghai University, Taichung 40704, Taiwan.
| | - Jiun-Yan Chiu
- Department of Chemical and Material Engineering, Tunghai University, Taichung 40704, Taiwan
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Feng X, Xu P, Shen T, Zhang Y, Ye J, Gao C. Age-Related Regeneration of Osteochondral and Tibial Defects by a Fibrin-Based Construct in vivo. Front Bioeng Biotechnol 2020; 8:404. [PMID: 32432101 PMCID: PMC7214756 DOI: 10.3389/fbioe.2020.00404] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Accepted: 04/09/2020] [Indexed: 11/13/2022] Open
Abstract
Tissue-biomaterial interactions in different microenvironments influence significantly the repair and regeneration outcomes when a scaffold or construct is implanted. In order to elucidate this issue, a fibrin gel filled macroporous fibrin scaffold (fibrin-based scaffold) was fabricated by loading fibrinogen via a negative pressure method, following with thrombin crosslinking. The macroporous fibrin scaffold exhibited a porous structure with porosity of (88.1 ± 1.3)%, and achieved a modulus of 19.8 ± 0.4 kPa at a wet state after fibrin gel filling, providing a suitable microenvironment for bone marrow-derived mesenchymal stem cells (BMSCs). The in vitro cellular culture revealed that the fibrin-based scaffold could support the adhesion, spreading, and proliferation of BMSCs in appropriate cell encapsulation concentrations. The fibrin-based scaffolds were then combined with BMSCs and lipofectamine/plasmid deoxyribonucleic acid (DNA) encoding mouse-transforming growth factor β1 (pDNA-TGF-β1) complexes to obtain the fibrin-based constructs, which were implanted into osteochondral and tibial defects at young adult rabbits (3 months old) and aged adult rabbits (12 months old) to evaluate their respective repair effects. Partial repair of osteochondral defects and perfect restoration of tibial defects were realized at 18 weeks post-surgery for the young adult rabbits, whereas only partial repair of subchondral bone and tibial bone defects were found at the same time for the aged adult rabbits, confirming the adaptability of the fibrin-based constructs to the different tissue microenvironments by tissue-biomaterial interplays.
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Affiliation(s)
- Xue Feng
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, China
| | - Peifang Xu
- Department of Ophthalmology, The Second Affiliated Hospital of Zhejiang University, School of Medicine, Hangzhou, China
| | - Tao Shen
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, China
| | - Yihan Zhang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, China
| | - Juan Ye
- Department of Ophthalmology, The Second Affiliated Hospital of Zhejiang University, School of Medicine, Hangzhou, China
| | - Changyou Gao
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, China
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Abstract
This review is focused on the use of membranes for the specific application of bone regeneration. The first section focuses on the relevance of membranes in this context and what are the specifications that they should possess to improve the regeneration of bone. Afterward, several techniques to engineer bone membranes by using "bulk"-like methods are discussed, where different parameters to induce bone formation are disclosed in a way to have desirable structural and functional properties. Subsequently, the production of nanostructured membranes using a bottom-up approach is discussed by highlighting the main advances in the field of bone regeneration. Primordial importance is given to the promotion of osteoconductive and osteoinductive capability during the membrane design. Whenever possible, the films prepared using different techniques are compared in terms of handability, bone guiding ability, osteoinductivity, adequate mechanical properties, or biodegradability. A last chapter contemplates membranes only composed by cells, disclosing their potential to regenerate bone.
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Affiliation(s)
- Sofia G Caridade
- Department of Chemistry CICECO, Aveiro Institute of Materials, University of Aveiro , Aveiro, Portugal
| | - João F Mano
- Department of Chemistry CICECO, Aveiro Institute of Materials, University of Aveiro , Aveiro, Portugal
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Smeets R, Knabe C, Kolk A, Rheinnecker M, Gröbe A, Heiland M, Zehbe R, Sachse M, Große-Siestrup C, Wöltje M, Hanken H. Novel silk protein barrier membranes for guided bone regeneration. J Biomed Mater Res B Appl Biomater 2016; 105:2603-2611. [DOI: 10.1002/jbm.b.33795] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Revised: 08/30/2016] [Accepted: 09/12/2016] [Indexed: 11/12/2022]
Affiliation(s)
- Ralf Smeets
- Department of Oral and Maxillofacial Surgery; University Medical Center Hamburg-Eppendorf; Hamburg Germany
| | - Christine Knabe
- Department of Experimental Orofacial Medicine; Philipps University Marburg; Marburg Germany
| | - Andreas Kolk
- Department of Oral- and Cranio-Maxillofacial Surgery; Klinikum rechts der Isar der Technischen Universität München; Munich Germany
| | | | - Alexander Gröbe
- Department of Oral and Maxillofacial Surgery; University Medical Center Hamburg-Eppendorf; Hamburg Germany
| | - Max Heiland
- Department of Oral and Maxillofacial Surgery; University Medical Center Hamburg-Eppendorf; Hamburg Germany
| | | | - Manuela Sachse
- Department of Experimental Orofacial Medicine; Philipps University Marburg; Marburg Germany
| | | | - Michael Wöltje
- Institute of Textile Machinery and High Performance Material Technology, Technische Universität Dresden; 01069 Dresden Germany
| | - Henning Hanken
- Department of Oral and Maxillofacial Surgery; University Medical Center Hamburg-Eppendorf; Hamburg Germany
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Guided bone regeneration is promoted by the molecular events in the membrane compartment. Biomaterials 2016; 84:167-183. [DOI: 10.1016/j.biomaterials.2016.01.034] [Citation(s) in RCA: 91] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Accepted: 01/18/2016] [Indexed: 11/18/2022]
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Han D, Dai K. Prefabrication of a vascularized bone graft with Beta tricalcium phosphate using an in vivo bioreactor. Artif Organs 2013; 37:884-93. [PMID: 23646847 DOI: 10.1111/aor.12092] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
We aimed to introduce an in vivo bioreactor-vascular pedicle threaded through the central portion of a scaffold in which a vascularized bone graft was prefabricated using adenoviral human BMP-2 gene (AdBMP2)-modified bone marrow mesenchymal stem cells (BMSCs), beta tricalcium phosphate (β-TCP), a vessel bundle, and muscularis membrane(group A). As controls, Adβgal-BMSCs/β-TCP granules, vessel bundle, and the muscularis membrane (group B); BMSCs/β-TCP granules, vessel bundle, and muscularis membrane (group C); and β-TCP granules, vessel bundle, and muscularis membrane (group D) were prepared. Formation of bone tissue and a vascular network was assessed by microangiography and histological methods 4 weeks after prefabrication. New cartilage and bone tissue in the space between β-TCP granules (mainly endochondral bone) were confirmed by histology, and a de novo vascular network circulating from the vessel bundle through newly formed bone tissue was observed in group A. Formation of bone or cartilage was not observed in the control groups. We concluded that the in vivo bioreactor is a promising method for prefabrication of vascularized functional bone.
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Affiliation(s)
- Dong Han
- Department of Orthopaedics, Ninth People's Hospital, Medical School of Shanghai Jiao Tong University
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Guda T, Walker JA, Singleton BM, Hernandez JW, Son JS, Kim SG, Oh DS, Appleford MR, Ong JL, Wenke JC. Guided bone regeneration in long-bone defects with a structural hydroxyapatite graft and collagen membrane. Tissue Eng Part A 2012; 19:1879-88. [PMID: 22844877 DOI: 10.1089/ten.tea.2012.0057] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
There are few synthetic graft alternatives to treat large long-bone defects resulting from trauma or disease that do not incorporate osteogenic or osteoinductive factors. The aim of this study was to test the additional benefit of including a permeable collagen membrane guide in conjunction with a preformed porous hydroxyapatite bone graft to serve as an improved osteoconductive scaffold for bone regeneration. A 10-mm-segmental long-bone defect model in the rabbit radius was used. The hydroxyapatite scaffolds alone or with a collagen wrap were compared as experimental treatment groups to an empty untreated defect as a negative control or a defect filled with autologous bone grafts as a positive control. All groups were evaluated after 4 and 8 weeks of in vivo implantation using microcomputed tomography, mechanical testing in flexure, and histomorphometry. It was observed that the use of the wrap resulted in an increased bone volume regenerated when compared to the scaffold-only group (59% greater at 4 weeks and 27% greater after 8 weeks). Additionally, the increase in density of the regenerated bone from 4 to 8 weeks in the wrap group was threefold than that in the scaffold group. The use of the collagen wrap showed significant benefits of increased interfacial bone in-growth (149% greater) and periosteal remodeling (49%) after 4 weeks compared to the scaffold-alone with the two groups being comparable after 8 weeks, by when the collagen membrane showed close-to-complete resorption. While the autograft and wrap groups showed significantly greater flexural strength than the defect group after 8 weeks, the scaffold-alone group was not significantly different from the other three groups. It is most likely that the wrap shows improvement of function by acting like a scaffold for periosteal callus ossification, maintaining the local bone-healing environment while reducing fibrous infiltration (15% less than scaffold only at 4 weeks). This study indicates that the use of a collagen membrane with a hydroxyapatite structural graft provides benefits for bone tissue regeneration in terms of early interfacial integration.
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Affiliation(s)
- Teja Guda
- Extremity Trauma and Regenerative Medicine Task Area, United States Army Institute of Surgical Research, Fort Sam Houston, Texas, USA.
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Dimitriou R, Mataliotakis GI, Calori GM, Giannoudis PV. The role of barrier membranes for guided bone regeneration and restoration of large bone defects: current experimental and clinical evidence. BMC Med 2012; 10:81. [PMID: 22834465 PMCID: PMC3423057 DOI: 10.1186/1741-7015-10-81] [Citation(s) in RCA: 235] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/10/2011] [Accepted: 07/26/2012] [Indexed: 12/27/2022] Open
Abstract
Treatment of large bone defects represents a great challenge in orthopedic and craniomaxillofacial surgery. Although there are several methods for bone reconstruction, they all have specific indications and limitations. The concept of using barrier membranes for restoration of bone defects has been developed in an effort to simplify their treatment by offering a single-staged procedure. Research on this field of bone regeneration is ongoing, with evidence being mainly attained from preclinical studies. The purpose of this review is to summarize the current experimental and clinical evidence on the use of barrier membranes for restoration of bone defects in maxillofacial and orthopedic surgery. Although there are a few promising preliminary human studies, before clinical applications can be recommended, future research should aim to establish the 'ideal' barrier membrane and delineate the need for additional bone grafting materials aiming to 'mimic' or even accelerate the normal process of bone formation. Reproducible results and long-term observations with barrier membranes in animal studies, and particularly in large animal models, are required as well as well-designed clinical studies to evaluate their safety, efficacy and cost-effectiveness.
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Affiliation(s)
- Rozalia Dimitriou
- Department of Trauma and Orthopaedics, Leeds Teaching Hospitals NHS Trust, Leeds LS1 3EX, UK
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Xiao J, Zhu Y, Liu Y, Zeng Y, Xu F. A composite coating of calcium alginate and gelatin particles on Ti6Al4V implant for the delivery of water soluble drug. J Biomed Mater Res B Appl Biomater 2009; 89:543-550. [PMID: 19048634 DOI: 10.1002/jbm.b.31246] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
A composite coating on Ti6Al4V implant was prepared from alginate and gelatin particles through a dip-coating method to control the release of the water soluble drug gentamicin and improve the surface properties of the implant. Gentamicin was dissolved in the coating or bonded to gelatin particles through Schiff base reaction. The drug release experiments in vitro showed that about 10% of gentamicin was released within 0.5 h, the release lasted for 10 days, and the release from the composite coating was dependent on the pH value. The composite coating could induce the formation of apatite on the coating surface, which was fully covered after 7 days immersing in SBF solution. In addition, Ti6Al4V plate with the composite coating had excellent antibacterial activity against Staphylococcus aureus. All of the results provided the possibility that this composite coating might be applied as a controlled release system to deliver the water soluble drug, and as a bioactive, biodegradable layer on the bio-inert implant surface to induce the formation of apatite and actively bond to the surrounding tissue in vivo.
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Affiliation(s)
- Junwu Xiao
- Key Laboratory of Inorganic Coating Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, China, 200050
| | - Yingchun Zhu
- Key Laboratory of Inorganic Coating Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, China, 200050
| | - Yanyan Liu
- Key Laboratory of Inorganic Coating Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, China, 200050
| | - Yi Zeng
- Key Laboratory of Inorganic Coating Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, China, 200050
| | - Fangfang Xu
- Key Laboratory of Inorganic Coating Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, China, 200050
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Gielkens PFM, Schortinghuis J, de Jong JR, Raghoebar GM, Stegenga B, Bos RRM. Vivosorb®, Bio-Gide®, and Gore-Tex®as barrier membranes in rat mandibular defects: an evaluation by microradiography and micro-CT. Clin Oral Implants Res 2008; 19:516-21. [DOI: 10.1111/j.1600-0501.2007.01511.x] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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