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Role of rhBMP-7, Fibronectin, And Type I Collagen in Dental Implant Osseointegration Process: An Initial Pilot Study on Minipig Animals. MATERIALS 2021; 14:ma14092185. [PMID: 33923213 PMCID: PMC8123155 DOI: 10.3390/ma14092185] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 04/21/2021] [Accepted: 04/22/2021] [Indexed: 12/09/2022]
Abstract
Background: The biological factors involved in dental implant osseointegration need to be investigated to improve implant success. Methods: Twenty-four implants were inserted into the tibias of six minipigs. Bone samples were obtained at 7, 14, and 56 days. Biomolecular analyses evaluated mRNA of BMP-4, -7, Transforming Growth Factor-β2, Interleukin-1β, and Osteocalcin in sites treated with rhBMP-7, Type 1 Collagen, or Fibronectin (FN). Inflammation and osteogenesis were evaluated by histological analyses. Results: At 7 and 14 days, BMP-4 and BMP-7 increased in the sites prepared with rhBMP-7 and FN. BMP-7 remained greater at 56 days in rhBMP-7 and FN sites. BPM-4 at 7 and 14 days increased in Type 1 Collagen sites; BMP-7 increased from day 14. FN increased the TGF-β2 at all experimental times, whilst the rhBMP-7 only did so up to 7 days. IL-1β increased only in collagen-treated sites from 14 days. Osteocalcin was high in FN-treated sites. Neutrophilic granulocytes characterized the inflammatory infiltrate at 7 days, and mononuclear cells at 14 and 56 days. Conclusions: This initial pilot study, in a novel way, evidenced that Type 1 Collagen induced inflammation and did not stimulate bone production; conversely FN or rhBMP-7 showed neo-osteogenetic and anti-inflammatory properties when directly added into implant bone site.
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Construction of surface HA/TiO2 coating on porous titanium scaffolds and its preliminary biological evaluation. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 70:1047-1056. [DOI: 10.1016/j.msec.2016.04.013] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Revised: 03/22/2016] [Accepted: 04/04/2016] [Indexed: 11/23/2022]
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Kaabi Falahieh Asl S, Nemeth S, Tan MJ. Novel biodegradable calcium phosphate/polymer composite coating with adjustable mechanical properties formed by hydrothermal process for corrosion protection of magnesium substrate. J Biomed Mater Res B Appl Biomater 2015; 104:1643-1657. [PMID: 26340081 DOI: 10.1002/jbm.b.33505] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2015] [Revised: 07/31/2015] [Accepted: 08/03/2015] [Indexed: 11/08/2022]
Abstract
Ceramic type coatings on metallic implants, such as calcium phosphate (Ca-P), are generally stiff and brittle, potentially leading to the early failure of the bone-implant interface. To reduce material brittleness, polyacrylic acid and carboxymethyl cellulose were used in this study to deposit two types of novel Ca-P/polymer composite coatings on AZ31 magnesium alloy using a one-step hydrothermal process. X-ray diffraction and scanning electron microscopy showed that the deposited Ca-P crystal phase and morphology could be controlled by the type and concentration of polymer used. Incorporation of polymer in the Ca-P coatings reduced the coating elastic modulus bringing it close to that of magnesium and that of human bone. Nanoindentation test results revealed significantly decreased cracking tendency with the incorporation of polymer in the Ca-P coating. Apart from mechanical improvements, the protective composite layers had also enhanced the corrosion resistance of the substrate by a factor of 1000 which is sufficient for implant application. Cell proliferation studies indicated that the composite coatings induced better cell attachment compared with the purely inorganic Ca-P coating, confirming that the obtained composite materials could be promising candidates for surface protection of magnesium for implant application with the multiple functions of corrosion protection, interfacial stress reduction, and cell attachment/cell growth promotion. © 2015 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 104B: 1643-1657, 2016.
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Affiliation(s)
- Sara Kaabi Falahieh Asl
- School of Mechanical & Aerospace Engineering, Nanyang Technological University, 639708, Singapore. .,Singapore Institute Of Manufacturing Technology, 638075, Singapore.
| | - Sandor Nemeth
- Singapore Institute Of Manufacturing Technology, 638075, Singapore
| | - Ming Jen Tan
- School of Mechanical & Aerospace Engineering, Nanyang Technological University, 639708, Singapore
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Chai YC, Geris L, Bolander J, Pyka G, Van Bael S, Luyten FP, Schrooten J. In vivo ectopic bone formation by devitalized mineralized stem cell carriers produced under mineralizing culture condition. Biores Open Access 2014; 3:265-77. [PMID: 25469312 PMCID: PMC4245878 DOI: 10.1089/biores.2014.0050] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Functionalization of tissue engineering scaffolds with in vitro–generated bone-like extracellular matrix (ECM) represents an effective biomimetic approach to promote osteogenic differentiation of stem cells in vitro. However, the bone-forming capacity of these constructs (seeded with or without cells) is so far not apparent. In this study, we aimed at developing a mineralizing culture condition to biofunctionalize three-dimensional (3D) porous scaffolds with highly mineralized ECM in order to produce devitalized, osteoinductive mineralized carriers for human periosteal-derived progenitors (hPDCs). For this, three medium formulations [i.e., growth medium only (BM1), with ascorbic acid (BM2), and with ascorbic acid and dexamethasone (BM3)] supplemented with calcium (Ca2+) and phosphate (PO43−) ions simultaneously as mineralizing source were investigated. The results showed that, besides the significant impacts on enhancing cell proliferation (the highest in BM3 condition), the formulated mineralizing media differentially regulated the osteochondro-related gene markers in a medium-dependent manner (e.g., significant upregulation of BMP2, bone sialoprotein, osteocalcin, and Wnt5a in BM2 condition). This has resulted in distinguished cell populations that were identifiable by specific gene signatures as demonstrated by the principle component analysis. Through devitalization, mineralized carriers with apatite crystal structures unique to each medium condition (by X-ray diffraction and SEM analysis) were obtained. Quantitatively, BM3 condition produced carriers with the highest mineral and collagen contents as well as human-specific VEGF proteins, followed by BM2 and BM1 conditions. Encouragingly, all mineralized carriers (after reseeded with hPDCs) induced bone formation after 8 weeks of subcutaneous implantation in nude mice models, with BM2-carriers inducing the highest bone volume, and the lowest in the BM3 condition (as quantitated by nano-computed tomography [nano-CT]). Histological analysis revealed different bone formation patterns, either bone ossicles containing bone marrow surrounding the scaffold struts (in BM2) or bone apposition directly on the struts' surface (in BM1 and BM3). In conclusion, we have presented experimental data on the feasibility to produce devitalized osteoinductive mineralized carriers by functionalizing 3D porous scaffolds with an in vitro cell-made mineralized matrix under the mineralizing culture conditions.
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Affiliation(s)
- Yoke Chin Chai
- Tissue Engineering Laboratory, Skeletal Biology and Engineering Research Center , KU Leuven, Leuven, Belgium . ; Department of Biomedical Engineering, Faculty of Engineering, University of Malaya , Kuala Lumpur, Malaysia . ; Prometheus, Division of Skeletal Tissue Engineering, KU Leuven , Leuven, Belgium
| | - Liesbet Geris
- Prometheus, Division of Skeletal Tissue Engineering, KU Leuven , Leuven, Belgium . ; Biomechanics Research Unit, University of Liege , Liege, Belgium
| | - Johanna Bolander
- Tissue Engineering Laboratory, Skeletal Biology and Engineering Research Center , KU Leuven, Leuven, Belgium . ; Prometheus, Division of Skeletal Tissue Engineering, KU Leuven , Leuven, Belgium
| | - Grzegorz Pyka
- Prometheus, Division of Skeletal Tissue Engineering, KU Leuven , Leuven, Belgium . ; Department of Materials Engineering, KU Leuven , Heverlee, Belgium
| | - Simon Van Bael
- Prometheus, Division of Skeletal Tissue Engineering, KU Leuven , Leuven, Belgium . ; Division of Production Engineering, Machine Design and Automation, Department of Mechanical Engineering, KU Leuven , Heverlee, Belgium
| | - Frank P Luyten
- Tissue Engineering Laboratory, Skeletal Biology and Engineering Research Center , KU Leuven, Leuven, Belgium . ; Prometheus, Division of Skeletal Tissue Engineering, KU Leuven , Leuven, Belgium
| | - Jan Schrooten
- Prometheus, Division of Skeletal Tissue Engineering, KU Leuven , Leuven, Belgium . ; Department of Materials Engineering, KU Leuven , Heverlee, Belgium
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Ling T, Lin J, Tu J, Liu S, Weng W, Cheng K, Wang H, Du P, Han G. Mineralized collagen coatings formed by electrochemical deposition. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2013; 24:2709-2718. [PMID: 23943062 DOI: 10.1007/s10856-013-5028-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2013] [Accepted: 07/29/2013] [Indexed: 06/02/2023]
Abstract
Understanding and controlling the process of electrochemical deposition (ECD) of a mineralized collagen coating on metallic orthopedic implants is important for engineering highly bioactive coatings. In this work, the influence of different ECD parameters was investigated. The results showed that the mineralization degree of the coatings increased with deposition time, voltage potential and H2O2 addition, while chitosan addition led to weakening of mineralization, heavy mineralization resulted in a porous coating morphology. Furthermore, two typical coatings, dense and porous, were analyzed to investigate their microstructure and evaluated for their cytocompatibility; the dense coating showed better osteoblast adhesion and proliferation. Based on our understanding of how the different coating parameters influenced the coating, we proposed an ECD process in which the pH gradient near the cathode and the collagen isoelectric point were suggested to play crucial roles in controlling the mineralization and morphology of the coatings. The proposed ECD process may offer a guide for controlled deposition of a desired bioactive coating.
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Affiliation(s)
- Ting Ling
- Department of Materials Science and Engineering, State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou, 310027, China
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Tu J, Yu M, Lu Y, Cheng K, Weng W, Lin J, Wang H, Du P, Han G. Preparation and antibiotic drug release of mineralized collagen coatings on titanium. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2012; 23:2413-2423. [PMID: 22669283 DOI: 10.1007/s10856-012-4692-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2011] [Accepted: 05/22/2012] [Indexed: 06/01/2023]
Abstract
In this study, a mineralized collagen coating was electrolytically deposited onto titanium. The results showed that the mineralized collagen coatings with dense or porous morphology could be obtained. The mineral phase was mainly hydroxyapatite. In vitro evaluation showed the mineralized collagen coatings were stable in Kokubo's simulated body fluid, and displayed a good cytocompatibility in the cell multiplication test. The mineralized collagen coatings loaded with vancomycin hydrochloride showed an inhibitory effect on the growth of S. aureus. The present mineralized collagen coating demonstrates good suitability for surface modification of orthopedic metal implants.
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Affiliation(s)
- Junjun Tu
- Department of Materials Science and Engineering, State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027, China
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Chai YC, Kerckhofs G, Roberts SJ, Van Bael S, Schepers E, Vleugels J, Luyten FP, Schrooten J. Ectopic bone formation by 3D porous calcium phosphate-Ti6Al4V hybrids produced by perfusion electrodeposition. Biomaterials 2012; 33:4044-58. [PMID: 22381474 DOI: 10.1016/j.biomaterials.2012.02.026] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2011] [Accepted: 02/09/2012] [Indexed: 01/17/2023]
Abstract
Successful clinical repair of non-healing skeletal defects requires the use of bone substitutes with robust bone inductivity and excellent biomechanical stability. Thus, three-dimensionally functionalised porous calcium phosphate-Ti6Al4V (CaP-Ti) hybrids were produced by perfusion electrodeposition, and the in vitro and in vivo biological performances were evaluated using human periosteum derived cells (hPDCs). By applying various current densities at the optimised deposition conditions, CaP coatings with sub-micrometer to nano-scale porous crystalline structures and different ion dissolution kinetics were deposited on the porous Ti6Al4V scaffolds. These distinctive physicochemical properties caused a significant impact on in vitro proliferation, osteogenic differentiation, and matrix mineralisation of hPDCs. This includes a potential role of hPDCs in mediating osteoclastogenesis for the resorption of CaP coatings, as indicated by a significant down-regulation of osteoprotegerin (OPG) gene expression and by the histological observation of abundant multi-nucleated giant cells near to the coatings. By subcutaneous implantation, the produced hybrids induced ectopic bone formation, which was highly dependent on the physicochemical properties of the CaP coating (including the Ca(2+) dissolution kinetics and coating surface topography), in a cell density-dependent manner. This study provided further insight on stem cell-CaP biomaterial interactions, and the feasibility to produced bone reparative units that are predictively osteoinductive in vivo by perfusion electrodeposition technology.
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Affiliation(s)
- Yoke Chin Chai
- Laboratory for Skeletal Development and Joint Disorders, KU Leuven, O&N 1, Herestraat 49, Bus 813, 3000 Leuven, Belgium.
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Xia Z, Yu X, Wei M. Biomimetic collagen/apatite coating formation on Ti6Al4V substrates. J Biomed Mater Res B Appl Biomater 2011; 100:871-81. [DOI: 10.1002/jbm.b.31970] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2010] [Revised: 04/30/2011] [Accepted: 07/08/2011] [Indexed: 11/11/2022]
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Wang QQ, Ma N, Jiang B, Gu ZW, Yang BC. Preparation of a HA/collagen film on a bioactive titanium surface by the electrochemical deposition method. Biomed Mater 2011; 6:055009. [DOI: 10.1088/1748-6041/6/5/055009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Perfusion electrodeposition of calcium phosphate on additive manufactured titanium scaffolds for bone engineering. Acta Biomater 2011; 7:2310-9. [PMID: 21215337 DOI: 10.1016/j.actbio.2010.12.032] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2010] [Revised: 12/22/2010] [Accepted: 12/29/2010] [Indexed: 12/17/2022]
Abstract
A perfusion electrodeposition (P-ELD) system was reported to functionalize additive manufactured Ti6Al4V scaffolds with a calcium phosphate (CaP) coating in a controlled and reproducible manner. The effects and interactions of four main process parameters - current density (I), deposition time (t), flow rate (f) and process temperature (T) - on the properties of the CaP coating were investigated. The results showed a direct relation between the parameters and the deposited CaP mass, with a significant effect for t (P=0.001) and t-f interaction (P=0.019). Computational fluid dynamic analysis showed a relatively low electrolyte velocity within the struts and a high velocity in the open areas within the P-ELD chamber, which were not influenced by a change in f. This is beneficial for promoting a controlled CaP deposition and hydrogen gas removal. Optimization studies showed that a minimum t of 6 h was needed to obtain complete coating of the scaffold regardless of I, and the thickness was increased by increasing I and t. Energy-dispersive X-ray and X-ray diffraction analysis confirmed the deposition of highly crystalline synthetic carbonated hydroxyapatite under all conditions (Ca/P ratio=1.41). High cell viability and cell-material interactions were demonstrated by in vitro culture of human periosteum derived cells on coated scaffolds. This study showed that P-ELD provides a technological tool to functionalize complex scaffold structures with a biocompatible CaP layer that has controlled and reproducible physicochemical properties suitable for bone engineering.
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de Jonge LT, Leeuwenburgh SCG, van den Beucken JJJP, te Riet J, Daamen WF, Wolke JGC, Scharnweber D, Jansen JA. The osteogenic effect of electrosprayed nanoscale collagen/calcium phosphate coatings on titanium. Biomaterials 2009; 31:2461-9. [PMID: 20022365 DOI: 10.1016/j.biomaterials.2009.11.114] [Citation(s) in RCA: 92] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2009] [Accepted: 11/29/2009] [Indexed: 11/29/2022]
Abstract
For orthopedic and dental implants, the ultimate goal is to obtain a life-long secure anchoring of the implant in the native surrounding bone. To this end, nanoscale calcium phosphate (CaP) and collagen-CaP (col-CaP) composite coatings have been successfully deposited using the electrospray deposition (ESD) technique. In order to study to what extent the thickness of these coatings can be reduced without losing coating osteogenic properties, we have characterized the mechanical and biological coating properties using tape tests (ASTM D-3359) and in vitro cell culture experiments, respectively. Co-deposition of collagen significantly improved coating adhesive and cohesive strength, resulting in a remarkably high coating retention of up to 97% for coating thicknesses below 100 nm. In vitro cell culture experiments showed that electrosprayed CaP and col-CaP composite coatings enhanced osteoblast differentiation, leading to improved mineral deposition. This effect was most pronounced upon co-deposition of collagen with CaP, and these coatings displayed osteogenic effects even for a coating thickness of below 100 nm.
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Affiliation(s)
- Lise T de Jonge
- Department of Periodontology and Biomaterials PB309, Radboud University Nijmegen Medical Center, 6500 HB Nijmegen, The Netherlands
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