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Abad-Javier M, Cajero-Juárez M, Nuñez-Anita R, Contreras-García M. Effect of collagen type I and vitamin D3 functionalization of biomimetic bioglass scaffolds on hydroxyapatite condensation. Ann Ital Chir 2019. [DOI: 10.1016/j.jeurceramsoc.2019.02.050] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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2
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Magnesium Filled Polylactic Acid (PLA) Material for Filament Based 3D Printing. MATERIALS 2019; 12:ma12050719. [PMID: 30823676 PMCID: PMC6427143 DOI: 10.3390/ma12050719] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Revised: 02/22/2019] [Accepted: 02/25/2019] [Indexed: 11/30/2022]
Abstract
The main objective of this research is to prove the viability of obtaining magnesium (Mg) filled polylactic acid (PLA) biocomposites as filament feedstock for material extrusion-based additive manufacturing (AM). These materials can be used for medical applications, thus benefiting of all the advantages offered by AM technology in terms of design freedom and product customization. Filaments were produced from two PLA + magnesium + vitamin E (α-tocopherol) compositions and then used for manufacturing test samples and ACL (anterior cruciate ligament) screws on a low-cost 3D printer. Filaments and implant screws were characterized using SEM (scanning electron microscopy), FTIR (fourier transform infrared spectrometry), and DSC (differential scanning calorimetry) analysis. Although the filament manufacturing process could not ensure a uniform distribution of Mg particles within the PLA matrix, a good integration was noticed, probably due to the use of vitamin E as a precursor. The results also show that the composite biomaterials can ensure and maintain implant screws structural integrity during the additive manufacturing process.
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Rizwan M, Hamdi M, Basirun WJ. Bioglass® 45S5-based composites for bone tissue engineering and functional applications. J Biomed Mater Res A 2017; 105:3197-3223. [DOI: 10.1002/jbm.a.36156] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Revised: 07/02/2017] [Accepted: 07/03/2017] [Indexed: 12/13/2022]
Affiliation(s)
- M. Rizwan
- Department of Mechanical Engineering; Faculty of Engineering, University of Malaya; Kuala Lumpur 50603 Malaysia
- Department of Metallurgical Engineering; Faculty of Chemical and Process Engineering, NED University of Engineering and Technology; Karachi 75270 Pakistan
| | - M. Hamdi
- Center of Advanced Manufacturing and Material Processing, University of Malaya; Kuala Lumpur 50603 Malaysia
| | - W. J. Basirun
- Department of Chemistry; Faculty of Science, University of Malaya; Kuala Lumpur 50603 Malaysia
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Francis L, Meng D, Locke IC, Knowles JC, Mordan N, Salih V, Boccaccini AR, Roy I. Novel poly(3-hydroxybutyrate) composite films containing bioactive glass nanoparticles for wound healing applications. POLYM INT 2016. [DOI: 10.1002/pi.5108] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Lydia Francis
- Faculty of Science and Technology; University of Westminster; 115 New Cavendish Street London W1W 6UW UK
| | - Decheng Meng
- Department of Materials; Imperial College London; Prince Consort Road London SW7 2BP UK
| | - Ian C Locke
- Faculty of Science and Technology; University of Westminster; 115 New Cavendish Street London W1W 6UW UK
| | - Jonathan C Knowles
- UCL Eastman Dental Institute; University College London; 256 Gray's Inn Road London WC1X 8LD UK
| | - Nicola Mordan
- UCL Eastman Dental Institute; University College London; 256 Gray's Inn Road London WC1X 8LD UK
| | - Vehid Salih
- UCL Eastman Dental Institute; University College London; 256 Gray's Inn Road London WC1X 8LD UK
- Plymouth University Peninsula School of Medicine & Dentistry Plymouth, Devon; PL4 8AA UK
| | - Aldo R Boccaccini
- Department of Materials; Imperial College London; Prince Consort Road London SW7 2BP UK
- Institute of Biomaterials, Department of Materials Science and Engineering; University of Erlangen-Nuremberg; Cauerstr. 6 91058 Erlangen Germany
| | - Ipsita Roy
- Faculty of Science and Technology; University of Westminster; 115 New Cavendish Street London W1W 6UW UK
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Zahid S, Shah AT, Jamal A, Chaudhry AA, Khan AS, Khan AF, Muhammad N, Rehman IU. Biological behavior of bioactive glasses and their composites. RSC Adv 2016. [DOI: 10.1039/c6ra07819b] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
This review summarizes current developments in improving the biological behavior of bioactive glasse and their composites.
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Affiliation(s)
- Saba Zahid
- Interdisciplinary Research Centre in Biomedical Materials
- COMSATS Institute of Information Technology
- Lahore
- Pakistan
| | - Asma Tufail Shah
- Interdisciplinary Research Centre in Biomedical Materials
- COMSATS Institute of Information Technology
- Lahore
- Pakistan
| | - Arshad Jamal
- Interdisciplinary Research Centre in Biomedical Materials
- COMSATS Institute of Information Technology
- Lahore
- Pakistan
| | - Aqif Anwar Chaudhry
- Interdisciplinary Research Centre in Biomedical Materials
- COMSATS Institute of Information Technology
- Lahore
- Pakistan
| | - Abdul Samad Khan
- Interdisciplinary Research Centre in Biomedical Materials
- COMSATS Institute of Information Technology
- Lahore
- Pakistan
| | - Ather Farooq Khan
- Interdisciplinary Research Centre in Biomedical Materials
- COMSATS Institute of Information Technology
- Lahore
- Pakistan
| | - Nawshad Muhammad
- Interdisciplinary Research Centre in Biomedical Materials
- COMSATS Institute of Information Technology
- Lahore
- Pakistan
| | - Ihtesham ur Rehman
- Department of Material Science and Engineering
- The Kroto Research Institute
- University of Sheffield
- Sheffield S3 7HQ
- UK
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Won JE, Mateos-Timoneda MA, Castano O, Planell JA, Seo SJ, Lee EJ, Han CM, Kim HW. Fibronectin immobilization on to robotic-dispensed nanobioactive glass/polycaprolactone scaffolds for bone tissue engineering. Biotechnol Lett 2014; 37:935-42. [PMID: 25502922 DOI: 10.1007/s10529-014-1745-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2014] [Accepted: 11/24/2014] [Indexed: 02/07/2023]
Abstract
Bioactive nanocomposite scaffolds with cell-adhesive surface have excellent bone regeneration capacities. Fibronectin (FN)-immobilized nanobioactive glass (nBG)/polycaprolactone (PCL) (FN-nBG/PCL) scaffolds with an open pore architecture were generated by a robotic-dispensing technique. The surface immobilization level of FN was significantly higher on the nBG/PCL scaffolds than on the PCL scaffolds, mainly due to the incorporated nBG that provided hydrophilic chemical-linking sites. FN-nBG/PCL scaffolds significantly improved cell responses, including initial anchorage and subsequent cell proliferation. Although further in-depth studies on cell differentiation and the in vivo animal responses are required, bioactive nanocomposite scaffolds with cell-favoring surface are considered to provide promising three-dimensional substrate for bone regeneration.
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Affiliation(s)
- Jong-Eun Won
- Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Cheonan, 330-714, South Korea
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Ravarian R, Zhong X, Barbeck M, Ghanaati S, Kirkpatrick CJ, Murphy CM, Schindeler A, Chrzanowski W, Dehghani F. Nanoscale chemical interaction enhances the physical properties of bioglass composites. ACS NANO 2013; 7:8469-8483. [PMID: 24001050 DOI: 10.1021/nn402157n] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Bioglasses are favorable biomaterials for bone tissue engineering; however, their applications are limited due to their brittleness. In addition, the early failure in the interface is a common problem of composites of bioglass and a polymer with high mechanical strength. This effect is due to the phase separation, nonhomogeneous mixture, nonuniform mechanical strength, and different degradation properties of two compounds. To address these issues, in this study a nanoscale interaction between poly(methyl methacrylate) (PMMA) and bioactive glass was formed via silane coupling agent (3-trimethoxysilyl)propyl methacrylate (MPMA). A monolith was produced at optimum composition from this hybrid by the sol-gel method at 50 °C with a rapid gelation time (<50 min) that possessed superior physicochemical properties compared to pure bioglass and physical mixture. For instance, the Young's modulus of bioglass was decreased 40-fold and the dissolution rate of silica was retarded 1.5-fold by integration of PMMA. Prolonged dissolution of silica fosters bone integration due to the continuous dissolution of bioactive silica. The primary osteoblast cells were well anchored and cell migration was observed on the surface of the hybrid. The in vivo studies in mice demonstrated that the integrity of the hybrids was maintained in subcutaneous implantation. They induced mainly a mononuclear phagocytic tissue reaction with a low level of inflammation, while bioglass provoked a tissue reaction with TRAP-positive multinucleated giant cells. These results demonstrated that the presence of a nanoscale interaction between bioglass and PMMA affects the properties of bioglass and broadens its potential applications for bone replacement.
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Affiliation(s)
- Roya Ravarian
- School of Chemical and Biomolecular Engineering, The University of Sydney , Sydney, NSW, Australia
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8
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Bonartsev AP, Yakovlev SG, Zharkova II, Boskhomdzhiev AP, Bagrov DV, Myshkina VL, Makhina TK, Kharitonova EP, Samsonova OV, Feofanov AV, Voinova VV, Zernov AL, Efremov YM, Bonartseva GA, Shaitan KV, Kirpichnikov MP. Cell attachment on poly(3-hydroxybutyrate)-poly(ethylene glycol) copolymer produced by Azotobacter chroococcum 7B. BMC BIOCHEMISTRY 2013; 14:12. [PMID: 23692611 PMCID: PMC3724502 DOI: 10.1186/1471-2091-14-12] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/26/2012] [Accepted: 04/19/2013] [Indexed: 11/18/2022]
Abstract
BACKGROUND The improvement of biomedical properties, e.g. biocompatibility, of poly(3-hydroxyalkanoates) (PHAs) by copolymerization is a promising trend in bioengineering. We used strain Azotobacter chroococcum 7B, an effective producer of PHAs, for biosynthesis of not only poly(3-hydroxybutyrate) (PHB) and its main copolymer, poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHB-HV), but also alternative copolymer, poly(3-hydroxybutyrate)-poly(ethylene glycol) (PHB-PEG). RESULTS In biosynthesis we used sucrose as the primary carbon source and valeric acid or poly(ethylene glycol) 300 (PEG 300) as additional carbon sources. The chemical structure of PHB-PEG and PHB-HV was confirmed by 1H nuclear-magnetic resonance (1H NMR) analysis. The physico-chemical properties (molecular weight, crystallinity, hydrophilicity, surface energy) and surface morphology of films from PHB copolymers were studied. To study copolymers biocompatibility in vitro the protein adsorption and COS-1 fibroblasts growth on biopolymer films by XTT assay were analyzed. Both copolymers had changed physico-chemical properties compared to PHB homopolymer: PHB-HV and PHB-PEG had less crystallinity than PHB; PHB-HV was more hydrophobic than PHB in contrast to PHB-PEG appeared to have greater hydrophilicity than PHB; whereas the morphology of polymer films did not differ significantly. The protein adsorption to PHB-PEG was greater and more uniform than to PHB and PHB-PEG copolymer promoted better growth of COS-1 fibroblasts compared with PHB homopolymer. CONCLUSIONS Thus, despite low EG-monomers content in bacterial origin PHB-PEG copolymer, this polymer demonstrated significant improvement in biocompatibility in contrast to PHB and PHB-HV copolymers, which may be coupled with increased protein adsorption and hydrophilicity of PEG-containing copolymer.
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Affiliation(s)
- Anton P Bonartsev
- Faculty of Biology, M.V.Lomonosov Moscow State University, Leninskie gory, 1-12, Moscow, 119236, Russia
- A.N.Bach Institute of Biochemistry RAS, Leninskii av., 33-2, Moscow, 119071, Russia
| | - Sergey G Yakovlev
- Faculty of Biology, M.V.Lomonosov Moscow State University, Leninskie gory, 1-12, Moscow, 119236, Russia
- A.N.Bach Institute of Biochemistry RAS, Leninskii av., 33-2, Moscow, 119071, Russia
| | - Irina I Zharkova
- Faculty of Biology, M.V.Lomonosov Moscow State University, Leninskie gory, 1-12, Moscow, 119236, Russia
| | | | - Dmitrii V Bagrov
- Faculty of Biology, M.V.Lomonosov Moscow State University, Leninskie gory, 1-12, Moscow, 119236, Russia
| | - Vera L Myshkina
- A.N.Bach Institute of Biochemistry RAS, Leninskii av., 33-2, Moscow, 119071, Russia
| | - Tatiana K Makhina
- A.N.Bach Institute of Biochemistry RAS, Leninskii av., 33-2, Moscow, 119071, Russia
| | - Elena P Kharitonova
- Faculty of Physics, M.V.Lomonosov Moscow State University, Leninskie gory, 1-2, Moscow, 119991, Russia
| | - Olga V Samsonova
- Faculty of Biology, M.V.Lomonosov Moscow State University, Leninskie gory, 1-12, Moscow, 119236, Russia
| | - Alexey V Feofanov
- Faculty of Biology, M.V.Lomonosov Moscow State University, Leninskie gory, 1-12, Moscow, 119236, Russia
| | - Vera V Voinova
- Faculty of Biology, M.V.Lomonosov Moscow State University, Leninskie gory, 1-12, Moscow, 119236, Russia
- A.N.Bach Institute of Biochemistry RAS, Leninskii av., 33-2, Moscow, 119071, Russia
| | - Anton L Zernov
- Faculty of Biology, M.V.Lomonosov Moscow State University, Leninskie gory, 1-12, Moscow, 119236, Russia
- A.N.Bach Institute of Biochemistry RAS, Leninskii av., 33-2, Moscow, 119071, Russia
| | - Yurii M Efremov
- Faculty of Biology, M.V.Lomonosov Moscow State University, Leninskie gory, 1-12, Moscow, 119236, Russia
| | - Garina A Bonartseva
- A.N.Bach Institute of Biochemistry RAS, Leninskii av., 33-2, Moscow, 119071, Russia
| | - Konstantin V Shaitan
- Faculty of Biology, M.V.Lomonosov Moscow State University, Leninskie gory, 1-12, Moscow, 119236, Russia
| | - Michail P Kirpichnikov
- Faculty of Biology, M.V.Lomonosov Moscow State University, Leninskie gory, 1-12, Moscow, 119236, Russia
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10
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Bonartsev A, Yakovlev S, Boskhomdzhiev A, Zharkova I, Bagrov D, Myshkina V, Mahina T, Kharitonova E, Samsonova O, Zernov A, Zhuikov V, Efremov Y, Voinova V, Bonartseva G, Shaitan K. The terpolymer produced by Azotobacter chroococcum 7B: effect of surface properties on cell attachment. PLoS One 2013; 8:e57200. [PMID: 23468935 PMCID: PMC3582562 DOI: 10.1371/journal.pone.0057200] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2012] [Accepted: 01/18/2013] [Indexed: 12/02/2022] Open
Abstract
The copolymerization of poly(3-hydroxybutyrate) (PHB) is a promising trend in bioengineering to improve biomedical properties, e.g. biocompatibility, of this biodegradable polymer. We used strain Azotobacter chroococcum 7B, an effective producer of PHB, for biosynthesis of not only homopolymer and its main copolymer, poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHB-HV), but also novel terpolymer, poly(3-hydroxybutyrate-co-3-hydroxyvalerate)-poly(ethylene glycol) (PHB-HV-PEG), using sucrose as the primary carbon source and valeric acid and poly(ethylene glycol) 300 (PEG 300) as additional carbon sources. The chemical structure of PHB-HV-PEG was confirmed by (1)H nuclear-magnetic resonance analysis. The physico-chemical properties (molecular weight, crystallinity, hydrophilicity, surface energy) of produced biopolymer, the protein adsorption to the terpolymer, and cell growth on biopolymer films were studied. Despite of low EG-monomers content in bacterial-origin PHB-HV-PEG polymer, the terpolymer demonstrated significant improvement in biocompatibility in vitro in contrast to PHB and PHB-HV polymers, which may be coupled with increased protein adsorption, hydrophilicity and surface roughness of PEG-containing copolymer.
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Affiliation(s)
- Anton Bonartsev
- Faculty of Biology, Moscow State University, Moscow, Russia.
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Luckarift HR, Sizemore SR, Farrington KE, Roy J, Lau C, Atanassov PB, Johnson GR. Facile fabrication of scalable, hierarchically structured polymer/carbon architectures for bioelectrodes. ACS APPLIED MATERIALS & INTERFACES 2012; 4:2082-2087. [PMID: 22394146 DOI: 10.1021/am300048v] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
This research introduces a method for fabrication of conductive electrode materials with hierarchical structure from porous polymer/carbon composite materials. We describe the fabrication of (3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) scaffolds doped with carbon materials that provide a conductive three-dimensional architecture that was demonstrated for application in microbial fuel cell (MFC) anodes. Composite electrodes from PHBV were fabricated to defined dimensions by solvent casting and particulate leaching of a size-specific porogen (in this case, sucrose). The cellular biocompatibility of the resulting composite material facilitated effective immobilization of a defined preparation of Shewanella oneidensis DSP-10 as a model microbial catalyst. Bacterial cells were immobilized via chemical vapor deposition (CVD) of silica to create an engineered biofilm that exhibits efficient bioelectrocatalysis of a simple-carbon fuel in a MFC. The functionalized PHBV electrodes demonstrate stable and reproducible anodic open circuit potentials of -320 ± 20 mV (vs Ag/AgCl) with lactate as the electron donor. Maximum power densities achieved by the hierarchically structured electrodes (~5 mW cm(3)) were significantly higher than previously observed for graphite-felt electrodes. The methodology for fabrication of scalable electrode materials may be amenable to other bioelectrochemical applications, such as enzyme fuel cells and biosensors, and could easily be adapted to various design concepts.
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Affiliation(s)
- Heather R Luckarift
- Microbiology and Applied Biochemistry Laboratory, Air Force Research Laboratory , Materials and Manufacturing Directorate (AFRL/RXQL), Tyndall Air Force Base, Florida 32403, United States.
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Morozowich NL, Nichol JL, Mondschein RJ, Allcock HR. Design and examination of an antioxidant-containing polyphosphazene scaffold for tissue engineering. Polym Chem 2012. [DOI: 10.1039/c2py00570k] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Morozowich NL, Weikel AL, Nichol JL, Chen C, Nair LS, Laurencin CT, Allcock HR. Polyphosphazenes Containing Vitamin Substituents: Synthesis, Characterization, and Hydrolytic Sensitivity. Macromolecules 2011. [DOI: 10.1021/ma1027406] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Nicole L. Morozowich
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Arlin L. Weikel
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Jessica L. Nichol
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Chen Chen
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Lakshmi S. Nair
- Department of Orthopaedic Surgery, University of Connecticut, Farmington, Connecticut 06030, United States
| | - Cato T. Laurencin
- Department of Orthopaedic Surgery, University of Connecticut, Farmington, Connecticut 06030, United States
- Department of Chemical, Materials and Biomolecular Engineering, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Harry R. Allcock
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
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Will J, Gerhardt LC, Boccaccini AR. Bioactive glass-based scaffolds for bone tissue engineering. ADVANCES IN BIOCHEMICAL ENGINEERING/BIOTECHNOLOGY 2011; 126:195-226. [PMID: 22085919 DOI: 10.1007/10_2011_106] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Originally developed to fill and restore bone defects, bioactive glasses are currently also being intensively investigated for bone tissue engineering applications. In this chapter, we review and discuss current knowledge on porous bone tissue engineering scaffolds made from bioactive silicate glasses. A brief historical review and the fundamental requirements in the field of bone tissue engineering scaffolds will be presented, followed by a detailed overview of recent developments in bioactive glass-based scaffolds. In addition, the effects of ionic dissolution products of bioactive glasses on osteogenesis and angiogenic properties of scaffolds are briefly addressed. Finally, promising areas of future research and requirements for the advancement of the field are highlighted and discussed.
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Affiliation(s)
- Julia Will
- Department of Materials Science and Engineering, Institute of Biomaterials, University of Erlangen-Nuremberg, Cauerstr. 6, 91058, Erlangen, Germany
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Gerhardt LC, Boccaccini AR. Bioactive Glass and Glass-Ceramic Scaffolds for Bone Tissue Engineering. MATERIALS (BASEL, SWITZERLAND) 2010; 3:3867-3910. [PMID: 28883315 PMCID: PMC5445790 DOI: 10.3390/ma3073867] [Citation(s) in RCA: 451] [Impact Index Per Article: 32.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/20/2010] [Accepted: 06/29/2010] [Indexed: 12/24/2022]
Abstract
Traditionally, bioactive glasses have been used to fill and restore bone defects. More recently, this category of biomaterials has become an emerging research field for bone tissue engineering applications. Here, we review and discuss current knowledge on porous bone tissue engineering scaffolds on the basis of melt-derived bioactive silicate glass compositions and relevant composite structures. Starting with an excerpt on the history of bioactive glasses, as well as on fundamental requirements for bone tissue engineering scaffolds, a detailed overview on recent developments of bioactive glass and glass-ceramic scaffolds will be given, including a summary of common fabrication methods and a discussion on the microstructural-mechanical properties of scaffolds in relation to human bone (structure-property and structure-function relationship). In addition, ion release effects of bioactive glasses concerning osteogenic and angiogenic responses are addressed. Finally, areas of future research are highlighted in this review.
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Affiliation(s)
| | - Aldo R Boccaccini
- Department of Materials, Imperial College London, Prince Consort Road, London SW7 2BP, UK.
- Institute of Biomaterials, University of Erlangen-Nuremberg, 91058 Erlangen, Germany.
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Misra SK, Ansari TI, Valappil SP, Mohn D, Philip SE, Stark WJ, Roy I, Knowles JC, Salih V, Boccaccini AR. Poly(3-hydroxybutyrate) multifunctional composite scaffolds for tissue engineering applications. Biomaterials 2010; 31:2806-15. [PMID: 20045554 DOI: 10.1016/j.biomaterials.2009.12.045] [Citation(s) in RCA: 137] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2009] [Accepted: 12/16/2009] [Indexed: 11/30/2022]
Abstract
Poly(3-hydroxybutyrate) (P(3HB)) foams exhibiting highly interconnected porosity (85% porosity) were prepared using a unique combination of solvent casting and particulate leaching techniques by employing commercially available sugar cubes as porogen. Bioactive glass (BG) particles of 45S5 Bioglass grade were introduced in the scaffold microstructure, both in micrometer ((m-BG), <5 microm) and nanometer ((n-BG), 30 nm) sizes. The in vitro bioactivity of the P(3HB)/BG foams was confirmed within 10 days of immersion in simulated body fluid and the foams showed high level of protein adsorption. The foams interconnected porous microstructure proved to be suitable for MG-63 osteoblast cell attachment and proliferation. The foams implanted in rats as subcutaneous implants resulted in a non-toxic and foreign body response after one week of implantation. In addition to showing bioactivity and biocompatibility, the P(3HB)/BG composite foams also exhibited bactericidal properties, which was tested on the growth of Staphylococcus aureus. An attempt was made at developing multifunctional scaffolds by incorporating, in addition to BG, selected concentrations of Vitamin E or/and carbon nanotubes. P(3HB) scaffolds with multifunctionalities (viz. bactericidal, bioactive, electrically conductive, antioxidative behaviour) were thus produced, which paves the way for next generation of advanced scaffolds for bone tissue engineering.
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Affiliation(s)
- Superb K Misra
- Department of Materials, Imperial College London, Exhibition Road, London SW7 2AZ, UK; Natural History Museum, Mineralogy, Cromwell Road, London SW75BD, UK
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