151
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Singh C, Wang X. Metal Ion-Loaded Nanofibre Matrices for Calcification Inhibition in Polyurethane Implants. J Funct Biomater 2017. [PMID: 28644382 PMCID: PMC5618273 DOI: 10.3390/jfb8030022] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Pathologic calcification leads to structural deterioration of implant materials via stiffening, stress cracking, and other structural disintegration mechanisms, and the effect can be critical for implants intended for long-term or permanent implantation. This study demonstrates the potential of using specific metal ions (MI)s for inhibiting pathological calcification in polyurethane (PU) implants. The hypothesis of using MIs as anti-calcification agents was based on the natural calcium-antagonist role of Mg2+ ions in human body, and the anti-calcification effect of Fe3+ ions in bio-prosthetic heart valves has previously been confirmed. In vitro calcification results indicated that a protective covering mesh of MI-doped PU can prevent calcification by preventing hydroxyapatite crystal growth. However, microstructure and mechanical characterisation revealed oxidative degradation effects from Fe3+ ions on the mechanical properties of the PU matrix. Therefore, from both a mechanical and anti-calcification effects point of view, Mg2+ ions are more promising candidates than Fe3+ ions. The in vitro MI release experiments demonstrated that PU microphase separation and the structural design of PU-MI matrices were important determinants of release kinetics. Increased phase separation in doped PU assisted in consistent long-term release of dissolved MIs from both hard and soft segments of the PU. The use of a composite-sandwich mesh design prevented an initial burst release which improved the late (>20 days) release rate of MIs from the matrix.
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Affiliation(s)
- Charanpreet Singh
- Australian Future Fibres Research and Innovation Centre, Institute for Frontier Materials, Deakin University, Geelong, VIC 3216, Australia.
| | - Xungai Wang
- Australian Future Fibres Research and Innovation Centre, Institute for Frontier Materials, Deakin University, Geelong, VIC 3216, Australia.
- School of Textile Science and Engineering, Wuhan Textile University, Wuhan 430073, China.
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152
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Palza H, Galarce N, Bejarano J, Beltran M, Caviedes P. Effect of copper nanoparticles on the cell viability of polymer composites. INT J POLYM MATER PO 2017. [DOI: 10.1080/00914037.2016.1252343] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Humberto Palza
- Chemical Engineering and Biotechnology Department, Faculty of Physical and Mathematical Sciences, University of Chile, Santiago, Chile
| | - Natalia Galarce
- Chemical Engineering and Biotechnology Department, Faculty of Physical and Mathematical Sciences, University of Chile, Santiago, Chile
| | - Julian Bejarano
- Chemical Engineering and Biotechnology Department, Faculty of Physical and Mathematical Sciences, University of Chile, Santiago, Chile
| | - Macarena Beltran
- Chemical Engineering and Biotechnology Department, Faculty of Physical and Mathematical Sciences, University of Chile, Santiago, Chile
| | - Pablo Caviedes
- Program of Molecular and Clinical Pharmacology, ICBM, Faculty of Medicine, University of Chile, Santiago, Chile
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153
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Schussler SD, Uske K, Marwah P, Kemp FW, Bogden JD, Lin SS, Livingston Arinzeh T. Controlled Release of Vanadium from a Composite Scaffold Stimulates Mesenchymal Stem Cell Osteochondrogenesis. AAPS JOURNAL 2017; 19:1017-1028. [PMID: 28332167 DOI: 10.1208/s12248-017-0073-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Accepted: 03/06/2017] [Indexed: 01/03/2023]
Abstract
Large bone defects often require the use of autograft, allograft, or synthetic bone graft augmentation; however, these treatments can result in delayed osseous integration. A tissue engineering strategy would be the use of a scaffold that could promote the normal fracture healing process of endochondral ossification, where an intermediate cartilage phase is later transformed to bone. This study investigated vanadyl acetylacetonate (VAC), an insulin mimetic, combined with a fibrous composite scaffold, consisting of polycaprolactone with nanoparticles of hydroxyapatite and beta-tricalcium phosphate, as a potential bone tissue engineering scaffold. The differentiation of human mesenchymal stem cells (MSCs) was evaluated on 0.05 and 0.025 wt% VAC containing composite scaffolds (VAC composites) in vitro using three different induction media: osteogenic (OS), chondrogenic (CCM), and chondrogenic/osteogenic (C/O) media, which mimics endochondral ossification. The controlled release of VAC was achieved over 28 days for the VAC composites, where approximately 30% of the VAC was released over this period. MSCs cultured on the VAC composites in C/O media had increased alkaline phosphatase activity, osteocalcin production, and collagen synthesis over the composite scaffold without VAC. In addition, gene expressions for chondrogenesis (Sox9) and hypertrophic markers (VEGF, MMP-13, and collagen X) were the highest on VAC composites. Almost a 1000-fold increase in VEGF gene expression and VEGF formation, as indicated by immunostaining, was achieved for cells cultured on VAC composites in C/O media, suggesting VAC will promote angiogenesis in vivo. These results demonstrate the potential of VAC composite scaffolds in supporting endochondral ossification as a bone tissue engineering strategy.
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Affiliation(s)
- S D Schussler
- Department of Chemical, Biological and Pharmaceutical Engineering, New Jersey Institute of Technology, Newark, New Jersey, 07102, USA
| | - K Uske
- Department of Biomedical Engineering, New Jersey Institute of Technology, University Heights, Newark, New Jersey, 07102, USA
| | - P Marwah
- Department of Biomedical Engineering, New Jersey Institute of Technology, University Heights, Newark, New Jersey, 07102, USA
| | - F W Kemp
- Department of Preventive Medicine and Community Health, New Jersey Medical School, Rutgers University, Newark, New Jersey, 07103, USA
| | - J D Bogden
- Department of Preventive Medicine and Community Health, New Jersey Medical School, Rutgers University, Newark, New Jersey, 07103, USA
| | - S S Lin
- Department of Orthopaedic Surgery, New Jersey Medical School, Rutgers University, Newark, New Jersey, 07103, USA
| | - Treena Livingston Arinzeh
- Department of Biomedical Engineering, New Jersey Institute of Technology, University Heights, Newark, New Jersey, 07102, USA.
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154
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Ndagi U, Mhlongo N, Soliman ME. Metal complexes in cancer therapy - an update from drug design perspective. Drug Des Devel Ther 2017; 11:599-616. [PMID: 28424538 PMCID: PMC5344412 DOI: 10.2147/dddt.s119488] [Citation(s) in RCA: 556] [Impact Index Per Article: 79.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
In the past, metal-based compounds were widely used in the treatment of disease conditions, but the lack of clear distinction between the therapeutic and toxic doses was a major challenge. With the discovery of cisplatin by Barnett Rosenberg in 1960, a milestone in the history of metal-based compounds used in the treatment of cancers was witnessed. This forms the foundation for the modern era of the metal-based anticancer drugs. Platinum drugs, such as cisplatin, carboplatin and oxaliplatin, are the mainstay of the metal-based compounds in the treatment of cancer, but the delay in the therapeutic accomplishment of other metal-based compounds hampered the progress of research in this field. Recently, however, there has been an upsurge of activities relying on the structural information, aimed at improving and developing other forms of metal-based compounds and nonclassical platinum complexes whose mechanism of action is distinct from known drugs such as cisplatin. In line with this, many more metal-based compounds have been synthesized by redesigning the existing chemical structure through ligand substitution or building the entire new compound with enhanced safety and cytotoxic profile. However, because of increased emphasis on the clinical relevance of metal-based complexes, a few of these drugs are currently on clinical trial and many more are awaiting ethical approval to join the trial. In this review, we seek to give an overview of previous reviews on the cytotoxic effect of metal-based complexes while focusing more on newly designed metal-based complexes and their cytotoxic effect on the cancer cell lines, as well as on new approach to metal-based drug design and molecular target in cancer therapy. We are optimistic that the concept of selective targeting remains the hope of the future in developing therapeutics that would selectively target cancer cells and leave healthy cells unharmed.
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Affiliation(s)
- Umar Ndagi
- Molecular Modelling and Drug Design Research Group, School of Health Sciences, University of KwaZulu-Natal, Westville, Durban, South Africa
| | - Ndumiso Mhlongo
- Molecular Modelling and Drug Design Research Group, School of Health Sciences, University of KwaZulu-Natal, Westville, Durban, South Africa
| | - Mahmoud E Soliman
- Molecular Modelling and Drug Design Research Group, School of Health Sciences, University of KwaZulu-Natal, Westville, Durban, South Africa
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155
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Robinson L, Salma-Ancane K, Stipniece L, Meenan BJ, Boyd AR. The deposition of strontium and zinc Co-substituted hydroxyapatite coatings. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2017; 28:51. [PMID: 28197823 DOI: 10.1007/s10856-017-5846-2] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2016] [Accepted: 01/04/2017] [Indexed: 06/06/2023]
Abstract
The in vitro and in vivo performance of hydroxyapatite (HAp) coatings can be modified by the addition of different trace ions, such as silicon (Si), lithium (Li), magnesium (Mg), zinc (Zn) or strontium (Sr) into the HAp lattice, to more closely mirror the complex chemistry of human bone. To date, most of the work in the literature has considered single ion-substituted materials and coatings, with limited reports on co-substituted calcium phosphate systems. The aim of this study was to investigate the potential of radio frequency magnetron sputtering to deposit Sr and Zn co-substituted HAp coatings using Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The FTIR and XPS results highlight that all of the Sr, Zn and Sr-Zn co-substituted surfaces produced are all dehydroxylated and are calcium deficient. All of the coatings contained HPO42- groups, however; only the pure HAp coating and the Sr substituted HAp coating contained additional CO32- groups. The XRD results highlight that none of the coatings produced in this study contain any other impurity CaP phases, showing peaks corresponding to that of ICDD file #01-072-1243 for HAp, albeit shifted to lower 2θ values due to the incorporation of Sr into the HAp lattice for Ca (in the Sr and Sr-Zn co-substituted surfaces only). Therefore, the results here clearly show that RF magnetron sputtering offers a simple means to deliver Sr and Zn co-substituted HAp coatings with enhanced surface properties. (a) XRD patterns for RF magnetron sputter deposited hydroxyapatite coatings and (b)-(d) for Sr, Zn and Sr-Zn co-substituted coatings, respectively. The XPS spectra in (b) confirms the presence of a HA sputter deposited coating as opposed to
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Affiliation(s)
- L Robinson
- Nanotechnology and Integrated Bioengineering Centre (NIBEC), School of Engineering, University of Ulster, Shore Road, Newtownabbey, Co. Antrim, BT37 0QB, Northern Ireland, UK
| | - K Salma-Ancane
- Rudolfs Cimdins Riga Biomaterials Innovations and Development Centre of RTU, Institute of General Chemical Engineering, Faculty of Materials Science and Applied Chemistry, Riga Technical University, Pulka 3, Riga, LV, 1007, Latvia
| | - L Stipniece
- Rudolfs Cimdins Riga Biomaterials Innovations and Development Centre of RTU, Institute of General Chemical Engineering, Faculty of Materials Science and Applied Chemistry, Riga Technical University, Pulka 3, Riga, LV, 1007, Latvia
| | - B J Meenan
- Nanotechnology and Integrated Bioengineering Centre (NIBEC), School of Engineering, University of Ulster, Shore Road, Newtownabbey, Co. Antrim, BT37 0QB, Northern Ireland, UK
| | - A R Boyd
- Nanotechnology and Integrated Bioengineering Centre (NIBEC), School of Engineering, University of Ulster, Shore Road, Newtownabbey, Co. Antrim, BT37 0QB, Northern Ireland, UK.
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156
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No YJ, Li JJ, Zreiqat H. Doped Calcium Silicate Ceramics: A New Class of Candidates for Synthetic Bone Substitutes. MATERIALS (BASEL, SWITZERLAND) 2017; 10:E153. [PMID: 28772513 PMCID: PMC5459133 DOI: 10.3390/ma10020153] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/29/2016] [Revised: 01/30/2017] [Accepted: 02/04/2017] [Indexed: 02/06/2023]
Abstract
Doped calcium silicate ceramics (DCSCs) have recently gained immense interest as a new class of candidates for the treatment of bone defects. Although calcium phosphates and bioactive glasses have remained the mainstream of ceramic bone substitutes, their clinical use is limited by suboptimal mechanical properties. DCSCs are a class of calcium silicate ceramics which are developed through the ionic substitution of calcium ions, the incorporation of metal oxides into the base binary xCaO-ySiO₂ system, or a combination of both. Due to their unique compositions and ability to release bioactive ions, DCSCs exhibit enhanced mechanical and biological properties. Such characteristics offer significant advantages over existing ceramic bone substitutes, and underline the future potential of adopting DCSCs for clinical use in bone reconstruction to produce improved outcomes. This review will discuss the effects of different dopant elements and oxides on the characteristics of DCSCs for applications in bone repair, including mechanical properties, degradation and ion release characteristics, radiopacity, and biological activity (in vitro and in vivo). Recent advances in the development of DCSCs for broader clinical applications will also be discussed, including DCSC composites, coated DCSC scaffolds and DCSC-coated metal implants.
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Affiliation(s)
- Young Jung No
- Biomaterials and Tissue Engineering Research Unit, School of AMME, University of Sydney, Sydney 2006, Australia.
| | - Jiao Jiao Li
- Biomaterials and Tissue Engineering Research Unit, School of AMME, University of Sydney, Sydney 2006, Australia.
| | - Hala Zreiqat
- Biomaterials and Tissue Engineering Research Unit, School of AMME, University of Sydney, Sydney 2006, Australia.
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157
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Gisbert-Garzarán M, Manzano M, Vallet-Regí M. pH-Responsive Mesoporous Silica and Carbon Nanoparticles for Drug Delivery. Bioengineering (Basel) 2017; 4:E3. [PMID: 28952481 PMCID: PMC5590444 DOI: 10.3390/bioengineering4010003] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Revised: 01/12/2017] [Accepted: 01/16/2017] [Indexed: 01/09/2023] Open
Abstract
The application of nanotechnology to medicine constitutes a major field of research nowadays. In particular, the use of mesoporous silica and carbon nanoparticles has attracted the attention of numerous researchers due to their unique properties, especially when applied to cancer treatment. Many strategies based on stimuli-responsive nanocarriers have been developed to control the drug release and avoid premature release. Here, we focus on the use of the subtle changes of pH between healthy and diseased areas along the body to trigger the release of the cargo. In this review, different approximations of pH-responsive systems are considered: those based on the use of the host-guest interactions between the nanocarriers and the drugs, those based on the hydrolysis of acid-labile bonds and those based on supramolecular structures acting as pore capping agents.
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Affiliation(s)
- Miguel Gisbert-Garzarán
- Departamento de Química Inorgánica y Bioinorgánica, Facultad de Farmacia, Universidad Complutense de Madrid, Instituto de Investigación Sanitaria Hospital 12 de Octubre i+12, Plaza Ramón y Cajal s/n, E-28040 Madrid, Spain.
- Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid 28029, Spain.
| | - Miguel Manzano
- Departamento de Química Inorgánica y Bioinorgánica, Facultad de Farmacia, Universidad Complutense de Madrid, Instituto de Investigación Sanitaria Hospital 12 de Octubre i+12, Plaza Ramón y Cajal s/n, E-28040 Madrid, Spain.
- Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid 28029, Spain.
| | - María Vallet-Regí
- Departamento de Química Inorgánica y Bioinorgánica, Facultad de Farmacia, Universidad Complutense de Madrid, Instituto de Investigación Sanitaria Hospital 12 de Octubre i+12, Plaza Ramón y Cajal s/n, E-28040 Madrid, Spain.
- Networking Research Center on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid 28029, Spain.
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158
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Santos NF, Cicuéndez M, Holz T, Silva VS, Fernandes AJS, Vila M, Costa FM. Diamond-Graphite Nanoplatelet Surfaces as Conductive Substrates for the Electrical Stimulation of Cell Functions. ACS APPLIED MATERIALS & INTERFACES 2017; 9:1331-1342. [PMID: 28001360 DOI: 10.1021/acsami.6b14407] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The nanocarbon allotropes constitute valid alternatives when designing control and actuation devices for electrically assisted tissue regeneration purposes, gathering among them important characteristics such as chemical inertness, biocompatibility, extreme mechanical properties, and, importantly, low and tailorable electrical resistivity. In this work, coatings of thin (100 nm) vertically aligned nanoplatelets composed of diamond (5 nm) and graphite were produced via a microwave plasma chemical vapor deposition (MPCVD) technique and used as substrates for electrical stimulation of MC3T3-E1 preosteoblasts. Increasing the amount of N2 up to 14.5 vol % during growth lowers the coatings' electrical resistivity by over 1 order of magnitude, triggers the nanoplatelet vertical growth, and leads to the higher crystalline quality of the nanographite phase. When preosteoblasts were cultured on these substrates and subjected to two consecutive daily cycles of 3 μA direct current stimulation, enhanced cell proliferation and metabolism were observed accompanied by high cell viability. Furthermore, in the absence of DC stimulation, alkaline phosphatase (ALP) activity is increased significantly, denoting an up-regulating effect of preosteoblastic maturation intrinsically exerted by the nanoplatelet substrates.
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Affiliation(s)
- N F Santos
- i3N and Physics Department, University of Aveiro , 3810-193 Aveiro, Portugal
| | - M Cicuéndez
- TEMA-NRG, Mechanical Engineering Department and CICECO-Aveiro Institute of Materials, Department of Chemistry, University of Aveiro , 3810-193 Aveiro, Portugal
| | - T Holz
- i3N and Physics Department, University of Aveiro , 3810-193 Aveiro, Portugal
| | - V S Silva
- CESAM, Biology Department, University of Aveiro , 3810-193 Aveiro, Portugal
| | - A J S Fernandes
- i3N and Physics Department, University of Aveiro , 3810-193 Aveiro, Portugal
| | - M Vila
- TEMA-NRG, Mechanical Engineering Department, University of Aveiro , 3810-193 Aveiro, Portugal
| | - F M Costa
- i3N and Physics Department, University of Aveiro , 3810-193 Aveiro, Portugal
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159
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Orthopedic implant biomaterials with both osteogenic and anti-infection capacities and associated in vivo evaluation methods. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2017; 13:123-142. [DOI: 10.1016/j.nano.2016.08.003] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2016] [Revised: 06/23/2016] [Accepted: 08/02/2016] [Indexed: 12/30/2022]
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160
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Khader A, Sherman LS, Rameshwar P, Arinzeh TL. Sodium Tungstate for Promoting Mesenchymal Stem Cell Chondrogenesis. Stem Cells Dev 2016; 25:1909-1918. [PMID: 27615276 PMCID: PMC5165671 DOI: 10.1089/scd.2016.0158] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2016] [Accepted: 09/09/2016] [Indexed: 02/07/2023] Open
Abstract
Articular cartilage has a limited ability to heal. Mesenchymal stem cells (MSCs) derived from the bone marrow have shown promise as a cell type for cartilage regeneration strategies. In this study, sodium tungstate (Na2WO4), which is an insulin mimetic, was evaluated for the first time as an inductive factor to enhance human MSC chondrogenesis. MSCs were seeded onto three-dimensional electrospun scaffolds in growth medium (GM), complete chondrogenic induction medium (CCM) containing insulin, and CCM without insulin. Na2WO4 was added to the media leading to final concentrations of 0, 0.01, 0.1, and 1 mM. Chondrogenic differentiation was assessed by biochemical analyses, immunostaining, and gene expression. Cytotoxicity using human peripheral blood mononuclear cells (PBMCS) was also investigated. The chondrogenic differentiation of MSCs was enhanced in the presence of low concentrations of Na2WO4 compared to control, without Na2WO4. In the induction medium containing insulin, cells in 0.01 mM Na2WO4 produced significantly higher sulfated glycosaminoglycans, collagen type II, and chondrogenic gene expression than all other groups at day 28. Cells in 0.1 mM Na2WO4 had significantly higher collagen II production and significantly higher sox-9 and aggrecan gene expression compared to control at day 28. Cells in GM and induction medium without insulin containing low concentrations of Na2WO4 also expressed chondrogenic markers. Na2WO4 did not stimulate PBMC proliferation or apoptosis. The results demonstrate that Na2WO4 enhances chondrogenic differentiation of MSCs, does not have a toxic effect, and may be useful for MSC-based approaches for cartilage repair.
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Affiliation(s)
- Ateka Khader
- 1 Department of Biomedical Engineering, New Jersey Institute of Technology , Newark, New Jersey
| | - Lauren S Sherman
- 2 Department of Medicine-Hematology/Oncology, Rutgers-New Jersey Medical School , Newark, New Jersey
| | - Pranela Rameshwar
- 2 Department of Medicine-Hematology/Oncology, Rutgers-New Jersey Medical School , Newark, New Jersey
| | - Treena L Arinzeh
- 1 Department of Biomedical Engineering, New Jersey Institute of Technology , Newark, New Jersey
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161
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Schamel M, Bernhardt A, Quade M, Würkner C, Gbureck U, Moseke C, Gelinsky M, Lode A. Cu 2+, Co 2+ and Cr 3+ doping of a calcium phosphate cement influences materials properties and response of human mesenchymal stromal cells. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 73:99-110. [PMID: 28183678 DOI: 10.1016/j.msec.2016.12.052] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Revised: 11/21/2016] [Accepted: 12/11/2016] [Indexed: 01/09/2023]
Abstract
The application of biologically active metal ions to stimulate cellular reactions is a promising strategy to accelerate bone defect healing. Brushite-forming calcium phosphate cements were modified with low doses of Cu2+, Co2+ and Cr3+. The modified cements released the metal ions in vitro in concentrations which were shown to be non-toxic for cells. The release kinetics correlated with the solubility of the respective metal phosphates: 17-45 wt.-% of Co2+ and Cu2+, but <1 wt.-% of Cr3+ were released within 28days. Moreover, metal ion doping led to alterations in the exchange of calcium and phosphate ions with cell culture medium. In case of cements modified with 50mmol Cr3+/mol β-tricalcium phosphate (β-TCP), XRD and SEM analyses revealed a significant amount of monetite and a changed morphology of the cement matrix. Cell culture experiments with human mesenchymal stromal cells indicated that the observed cell response is not only influenced by the released metal ions but also by changed cement properties. A positive effect of modifications with 50mmol Cr3+ or 10mmol Cu2+ per mol β-TCP on cell behaviour was observed in indirect and direct culture. Modification with Co2+ resulted in a clear suppression of cell proliferation and osteogenic differentiation. In conclusion, metal ion doping of the cement influences cellular activities in addition to the effect of released metal ions by changing properties of the ceramic matrix.
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Affiliation(s)
- Martha Schamel
- Department for Functional Materials in Medicine and Dentistry, University of Würzburg, Pleicherwall 2, 97070 Würzburg, Germany
| | - Anne Bernhardt
- Centre for Translational Bone, Joint and Soft Tissue Research, University Hospital Carl Gustav Carus and Faculty of Medicine of Technische Universität Dresden, Fetscherstraße 74, 01307 Dresden, Germany
| | - Mandy Quade
- Centre for Translational Bone, Joint and Soft Tissue Research, University Hospital Carl Gustav Carus and Faculty of Medicine of Technische Universität Dresden, Fetscherstraße 74, 01307 Dresden, Germany
| | - Claudia Würkner
- Centre for Translational Bone, Joint and Soft Tissue Research, University Hospital Carl Gustav Carus and Faculty of Medicine of Technische Universität Dresden, Fetscherstraße 74, 01307 Dresden, Germany
| | - Uwe Gbureck
- Department for Functional Materials in Medicine and Dentistry, University of Würzburg, Pleicherwall 2, 97070 Würzburg, Germany
| | - Claus Moseke
- Department for Functional Materials in Medicine and Dentistry, University of Würzburg, Pleicherwall 2, 97070 Würzburg, Germany
| | - Michael Gelinsky
- Centre for Translational Bone, Joint and Soft Tissue Research, University Hospital Carl Gustav Carus and Faculty of Medicine of Technische Universität Dresden, Fetscherstraße 74, 01307 Dresden, Germany
| | - Anja Lode
- Centre for Translational Bone, Joint and Soft Tissue Research, University Hospital Carl Gustav Carus and Faculty of Medicine of Technische Universität Dresden, Fetscherstraße 74, 01307 Dresden, Germany.
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162
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Barabadi Z, Azami M, Sharifi E, Karimi R, Lotfibakhshaiesh N, Roozafzoon R, Joghataei MT, Ai J. Fabrication of hydrogel based nanocomposite scaffold containing bioactive glass nanoparticles for myocardial tissue engineering. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 69:1137-46. [DOI: 10.1016/j.msec.2016.08.012] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2016] [Revised: 07/29/2016] [Accepted: 08/04/2016] [Indexed: 01/29/2023]
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163
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Cattalini JP, Roether J, Hoppe A, Pishbin F, Haro Durand L, Gorustovich A, Boccaccini AR, Lucangioli S, Mouriño V. Nanocomposite scaffolds with tunable mechanical and degradation capabilities: co-delivery of bioactive agents for bone tissue engineering. ACTA ACUST UNITED AC 2016; 11:065003. [PMID: 27767020 DOI: 10.1088/1748-6041/11/6/065003] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Novel multifunctional nanocomposite scaffolds made of nanobioactive glass and alginate crosslinked with therapeutic ions such as calcium and copper were developed for delivering therapeutic agents, in a highly controlled and sustainable manner, for bone tissue engineering. Alendronate, a well-known antiresorptive agent, was formulated into microspheres under optimized conditions and effectively loaded within the novel multifunctional scaffolds with a high encapsulation percentage. The size of the cation used for the alginate crosslinking impacted directly on porosity and viscoelastic properties, and thus, on the degradation rate and the release profile of copper, calcium and alendronate. According to this, even though highly porous structures were created with suitable pore sizes for cell ingrowth and vascularization in both cases, copper-crosslinked scaffolds showed higher values of porosity, elastic modulus, degradation rate and the amount of copper and alendronate released, when compared with calcium-crosslinked scaffolds. In addition, in all cases, the scaffolds showed bioactivity and mechanical properties close to the endogenous trabecular bone tissue in terms of viscoelasticity. Furthermore, the scaffolds showed osteogenic and angiogenic properties on bone and endothelial cells, respectively, and the extracts of the biomaterials used promoted the formation of blood vessels in an ex vivo model. These new bioactive nanocomposite scaffolds represent an exciting new class of therapeutic cell delivery carrier with tunable mechanical and degradation properties; potentially useful in the controlled and sustainable delivery of therapeutic agents with active roles in bone formation and angiogenesis, as well as in the support of cell proliferation and osteogenesis for bone tissue engineering.
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Affiliation(s)
- Juan P Cattalini
- Department of Pharmaceutical Technology, Faculty of Pharmacy and Biochemistry, University of Buenos Aires, Buenos Aires, PC1113, Argentina
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164
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A bird's eye view on the use of electrospun nanofibrous scaffolds for bone tissue engineering: Current state‐of‐the‐art, emerging directions and future trends. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2016; 12:2181-2200. [DOI: 10.1016/j.nano.2016.05.014] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Revised: 05/05/2016] [Accepted: 05/13/2016] [Indexed: 12/16/2022]
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165
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Influence of single and binary doping of strontium and lithium on in vivo biological properties of bioactive glass scaffolds. Sci Rep 2016; 6:32964. [PMID: 27604654 PMCID: PMC5015095 DOI: 10.1038/srep32964] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2016] [Accepted: 08/15/2016] [Indexed: 11/08/2022] Open
Abstract
Effects of strontium and lithium ion doping on the biological properties of bioactive glass (BAG) porous scaffolds have been checked in vitro and in vivo. BAG scaffolds were prepared by conventional glass melting route and subsequently, scaffolds were produced by evaporation of fugitive pore formers. After thorough physico-chemical and in vitro cell characterization, scaffolds were used for pre-clinical study. Soft and hard tissue formation in a rabbit femoral defect model after 2 and 4 months, were assessed using different tools. Histological observations showed excellent osseous tissue formation in Sr and Li + Sr scaffolds and moderate bone regeneration in Li scaffolds. Fluorochrome labeling studies showed wide regions of new bone formation in Sr and Li + Sr doped samples as compared to Li doped samples. SEM revealed abundant collagenous network and minimal or no interfacial gap between bone and implant in Sr and Li + Sr doped samples compared to Li doped samples. Micro CT of Li + Sr samples showed highest degree of peripheral cancellous tissue formation on periphery and cortical tissues inside implanted samples and vascularity among four compositions. Our findings suggest that addition of Sr and/or Li alters physico-chemical properties of BAG and promotes early stage in vivo osseointegration and bone remodeling that may offer new insight in bone tissue engineering.
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166
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Madzovska-Malagurski I, Vukasinovic-Sekulic M, Kostic D, Levic S. Towards antimicrobial yet bioactive Cu-alginate hydrogels. ACTA ACUST UNITED AC 2016; 11:035015. [PMID: 27305176 DOI: 10.1088/1748-6041/11/3/035015] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
The simplest approach to enhance alginate hydrogel characteristics and functional properties is to replace the calcium in the process of alginate gelation with other metallic ions which are essential for living systems. Gelling of alginate with other ions and using modern encapsulation techniques can provide new delivery systems with required properties. Hence, in this study Cu-alginate hydrogels in the form of microbeads were produced by electrostatic extrusion using gelling solutions with Cu(II) concentrations in the range 13.5-270 mM and comprehensively characterized in vitro. The variation of gelling solution concentration influenced the microbead Cu(II) content, size, biomechanical properties, Cu(II) release and subsequently potential biomedical application. The formulations chosen for biomedical evaluation showed potential for antimicrobial and tissue engineering applications. Microbeads with higher Cu(II) loading (~100 μmol g(-1)) induced immediate bactericidal effects against Escherichia coli and Staphylococcus aureus. Conversely, Cu(II) release from microbeads with the Cu(II) content of ~60 μmol g(-1) was slower and they were suitable for promoting and maintaining chondrogenic phenotype of bovine calf chondrocytes in 3D culture. Results of this study have shown possibilities for tuning Cu-alginate properties for potential biomedical applications such as antimicrobial wound dressings, tissue engineering scaffolds or articular cartilage implants.
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Affiliation(s)
- I Madzovska-Malagurski
- University of Belgrade, Faculty of Technology and Metallurgy, Karnegijeva 4, 11000 Belgrade, Serbia
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167
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Bose S, Tarafder S, Bandyopadhyay A. Effect of Chemistry on Osteogenesis and Angiogenesis Towards Bone Tissue Engineering Using 3D Printed Scaffolds. Ann Biomed Eng 2016; 45:261-272. [PMID: 27287311 DOI: 10.1007/s10439-016-1646-y] [Citation(s) in RCA: 80] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Accepted: 05/10/2016] [Indexed: 12/22/2022]
Abstract
The functionality or survival of tissue engineering constructs depends on the adequate vascularization through oxygen transport and metabolic waste removal at the core. This study reports the presence of magnesium and silicon in direct three dimensional printed (3DP) tricalcium phosphate (TCP) scaffolds promotes in vivo osteogenesis and angiogenesis when tested in rat distal femoral defect model. Scaffolds with three different interconnected macro pore sizes were fabricated using direct three dimensional printing. In vitro ion release in phosphate buffer for 30 days showed sustained Mg2+ and Si4+ release from these scaffolds. Histolomorphology and histomorphometric analysis from the histology tissue sections revealed a significantly higher bone formation, between 14 and 20% for 4-16 weeks, and blood vessel formation, between 3 and 6% for 4-12 weeks, due to the presence of magnesium and silicon in TCP scaffolds compared to bare TCP scaffolds. The presence of magnesium in these 3DP TCP scaffolds also caused delayed TRAP activity. These results show that magnesium and silicon incorporated 3DP TCP scaffolds with multiscale porosity have huge potential for bone tissue repair and regeneration.
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Affiliation(s)
- Susmita Bose
- W. M. Keck Biomedical Materials Research Laboratory, School of Mechanical and Materials Engineering, Washington State University, Pullman, WA, 99164, USA.
| | - Solaiman Tarafder
- W. M. Keck Biomedical Materials Research Laboratory, School of Mechanical and Materials Engineering, Washington State University, Pullman, WA, 99164, USA
| | - Amit Bandyopadhyay
- W. M. Keck Biomedical Materials Research Laboratory, School of Mechanical and Materials Engineering, Washington State University, Pullman, WA, 99164, USA
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168
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Miola M, Verné E. Bioactive and Antibacterial Glass Powders Doped with Copper by Ion-Exchange in Aqueous Solutions. MATERIALS (BASEL, SWITZERLAND) 2016; 9:E405. [PMID: 28773530 PMCID: PMC5456756 DOI: 10.3390/ma9060405] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Revised: 05/10/2016] [Accepted: 05/18/2016] [Indexed: 01/23/2023]
Abstract
In this work, two bioactive glass powders (SBA2 and SBA3) were doped with Cu by means of the ion-exchange technique in aqueous solution. SBA2 glass was subjected to the ion-exchange process by using different Cu salts (copper(II) nitrate, chloride, acetate, and sulphate) and concentrations. Structural (X-ray diffraction-XRD), morphological (Scanning Electron Microscopy-SEM), and compositional (Energy Dispersion Spectrometry-EDS) analyses evidenced the formation of crystalline phases for glasses ion-exchanged in copper(II) nitrate and chloride solutions; while the ion-exchange in copper(II) acetate solutions lead to the incorporation of higher Cu amount than the ion-exchange in copper(II) sulphate solutions. For this reason, the antibacterial test (inhibition halo towards S. aureus) was performed on SBA2 powders ion-exchanged in copper(II) acetate solutions and evidenced a limited antibacterial effect. A second glass composition (SBA3) was developed to allow a greater incorporation of Cu in the glass surface; SBA3 powders were ion-exchanged in copper(II) acetate solutions (0.01 M and 0.05 M). Cu-doped SBA3 powders showed an amorphous structure; morphological analysis evidenced a rougher surface for Cu-doped powders in comparison to the undoped glass. EDS and X-ray photoelectron spectroscopy (XPS) confirmed the Cu introduction as Cu(II) ions. Bioactivity test in simulated body fluid (SBF) showed that Cu introduction did not alter the bioactive behaviour of the glass. Finally, inhibition halo test towards S. aureus evidenced a good antimicrobial effect for glass powders ion-exchanged in copper(II) acetate solutions 0.05 M.
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Affiliation(s)
- Marta Miola
- Applied Science and Technology Department, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy.
| | - Enrica Verné
- Applied Science and Technology Department, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy.
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169
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O'Connell K, Pierlot C, O'Shea H, Beaudry D, Chagnon M, Assad M, Boyd D. Host responses to a strontium releasing high boron glass using a rabbit bilateral femoral defect model. J Biomed Mater Res B Appl Biomater 2016; 105:1818-1827. [PMID: 27219680 DOI: 10.1002/jbm.b.33694] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2016] [Revised: 03/30/2016] [Accepted: 04/06/2016] [Indexed: 11/09/2022]
Abstract
Borate glasses have shown promising potential as bioactive materials. With recent research demonstrating that glass properties may be modulated by appropriate compositional design. This may provide for indication specific material characteristics and controlled release of therapeutic inorganic ions (i.e., strontium); controlling such release is critical in order to harness the therapeutic potential. Within this sub-chronic pilot study, a rabbit long-bone model was utilized to explore the safety and efficacy of a high borate glass (LB102: 70B2 O3 -20SrO-6Na2 O-4La2 O3 ) particulate (90 - 710 μm) for bone regeneration. Six bilateral full-thickness defects (Ø = 3.5 mm; L = 8 mm) were created in three white New Zealand rabbits. Longitudinal non-decalcified sections of each defect site were produced and stained with Goldner's Trichrome. Histopathological examination revealed that LB102 demonstrated osteoconductive and osseointegrative properties with greater new bone being formed within and surrounding LB102 particles, when compared to the sham control. The inflammatory cell infiltration was observed to be slightly higher in the control when compared to LB102 defect sites, while no significant difference in fibrosis and neovascularization was determined, indicating that healing was occurring in a normal fashion. These data further suggest the possible utility of high borate glasses with appropriate compositional design for medical applications, such as bone augmentation. © 2016 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 105B: 1818-1827, 2017.
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Affiliation(s)
- Kathleen O'Connell
- Department of Biological Sciences, Cork Institute of Technology, Cork, Ireland
| | - Caitlin Pierlot
- Department of Applied Oral Sciences, Dalhousie University, Halifax, NS, Canada
| | - Helen O'Shea
- Department of Biological Sciences, Cork Institute of Technology, Cork, Ireland
| | - Diane Beaudry
- Orthopedics and Biomaterials Lab, AccelLAB Inc., Boisbriand, QC, Canada
| | - Madeleine Chagnon
- Orthopedics and Biomaterials Lab, AccelLAB Inc., Boisbriand, QC, Canada
| | - Michel Assad
- Orthopedics and Biomaterials Lab, AccelLAB Inc., Boisbriand, QC, Canada
| | - Daniel Boyd
- Department of Applied Oral Sciences, Dalhousie University, Halifax, NS, Canada.,School of Biomedical Engineering, Dalhousie University, Halifax, NS, Canada
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170
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Sharifi E, Ebrahimi-Barough S, Panahi M, Azami M, Ai A, Barabadi Z, Kajbafzadeh AM, Ai J. In vitroevaluation of human endometrial stem cell-derived osteoblast-like cells’ behavior on gelatin/collagen/bioglass nanofibers’ scaffolds. J Biomed Mater Res A 2016; 104:2210-9. [DOI: 10.1002/jbm.a.35748] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2015] [Revised: 03/28/2016] [Accepted: 04/15/2016] [Indexed: 12/16/2022]
Affiliation(s)
- Esmaeel Sharifi
- Cellular and Molecular Research Center; Shahrekord University of Medical Sciences; Shahrekord Iran
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine; Tehran University of Medical Sciences; Tehran Iran
| | - Somayeh Ebrahimi-Barough
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine; Tehran University of Medical Sciences; Tehran Iran
| | - Maryam Panahi
- School of Medicine; Tehran University of Medical Sciences; Tehran Iran
| | - Mahmoud Azami
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine; Tehran University of Medical Sciences; Tehran Iran
| | - Arman Ai
- School of Medicine; Tehran University of Medical Sciences; Tehran Iran
| | - Zahra Barabadi
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine; Tehran University of Medical Sciences; Tehran Iran
| | - Abdol-Mohammad Kajbafzadeh
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine; Tehran University of Medical Sciences; Tehran Iran
- Pediatric Urology Research Center, Section of Tissue Engineering and Stem Cells Therapy, Department of Pediatric Urology; Children's Hospital Medical Center; Tehran Iran (IRI)
| | - Jafar Ai
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine; Tehran University of Medical Sciences; Tehran Iran
- Brain and Spinal Injury Research Center (BASIR), Imam Khomeini Hospital, Tehran University of Medical Sciences; Tehran Iran
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171
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Facile Synthesis of Photofunctional Nanolayer Coatings on Titanium Substrates. BIOMED RESEARCH INTERNATIONAL 2016; 2016:4318917. [PMID: 27110564 PMCID: PMC4823491 DOI: 10.1155/2016/4318917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/01/2016] [Accepted: 03/13/2016] [Indexed: 11/17/2022]
Abstract
We developed a two-step chemical bonding process using photosensitizer molecules to fabricate photofunctional nanolayer coatings on hematoporphyrin- (HP-) coated Ti substrates. In the first step, 3-aminopropyltriethoxysilane was covalently functionalized onto the surface of the Ti substrates to provide heterogeneous sites for immobilizing the HP molecules. Then, HP molecules with carboxyl groups were chemically attached to the amine-terminated nanolayer coatings via a carbodiimide coupling reaction. The microstructure and elemental and phase composition of the HP-coated Ti substrates were investigated using field-emission scanning electron microscopy and energy-dispersive X-ray spectrometry. The photophysical properties of the photofunctional nanolayer coatings were confirmed using reflectance ultraviolet-visible absorption and emission spectrophotometry. The singlet oxygen generation efficiency of the photofunctional nanolayer coatings was determined using the decomposition reaction of 1,3-diphenylisobenzofuran. The HP-coated Ti substrates exhibited good biocompatibility without any cytotoxicity, and these nanolayer coatings generated singlet oxygen, which can kill microorganisms using only visible light.
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172
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Perez RA, Mestres G. Role of pore size and morphology in musculo-skeletal tissue regeneration. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 61:922-39. [DOI: 10.1016/j.msec.2015.12.087] [Citation(s) in RCA: 218] [Impact Index Per Article: 27.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2015] [Revised: 12/23/2015] [Accepted: 12/28/2015] [Indexed: 01/04/2023]
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173
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Galvão TL, Neves CS, Caetano AP, Maia F, Mata D, Malheiro E, Ferreira MJ, Bastos AC, Salak AN, Gomes JR, Tedim J, Ferreira MG. Control of crystallite and particle size in the synthesis of layered double hydroxides: Macromolecular insights and a complementary modeling tool. J Colloid Interface Sci 2016; 468:86-94. [DOI: 10.1016/j.jcis.2016.01.038] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2015] [Revised: 01/19/2016] [Accepted: 01/19/2016] [Indexed: 01/23/2023]
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174
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Vasconcelos DM, Santos SG, Lamghari M, Barbosa MA. The two faces of metal ions: From implants rejection to tissue repair/regeneration. Biomaterials 2016; 84:262-275. [DOI: 10.1016/j.biomaterials.2016.01.046] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2015] [Revised: 01/20/2016] [Accepted: 01/21/2016] [Indexed: 12/20/2022]
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175
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Birgani ZT, Gharraee N, Malhotra A, van Blitterswijk CA, Habibovic P. Combinatorial incorporation of fluoride and cobalt ions into calcium phosphates to stimulate osteogenesis and angiogenesis. ACTA ACUST UNITED AC 2016; 11:015020. [PMID: 26929187 DOI: 10.1088/1748-6041/11/1/015020] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Bone healing requires two critical mechanisms, angiogenesis and osteogenesis. In order to improve bone graft substitutes, both mechanisms should be addressed simultaneously. While the individual effects of various bioinorganics have been studied, an understanding of the combinatorial effects is lacking. Cobalt and fluoride ions, in appropriate concentrations, are known to individually favor the vascularization and mineralization processes, respectively. This study investigated the potential of using a combination of fluoride and cobalt ions to simultaneously promote osteogenesis and angiogenesis in human mesenchymal stromal cells (hMSCs). Using a two-step biomimetic method, wells of tissue culture plates were coated with a calcium phosphate (CaP) layer without or with the incorporation of cobalt, fluoride, or both. In parallel, hMSCs were cultured on uncoated well plates, and cultured with cobalt and/or fluoride ions within the media. The results revealed that cobalt ions increased the expression of angiogenic markers, with the effects being stronger when the ions were added as a dissolved salt in cell medium as compared to incorporation into CaP. Cobalt ions generally suppressed the ALP activity, the expression of osteogenic genes, and the level of mineralization, regardless of delivery method. Fluoride ions, individually or in combination with cobalt, significantly increased the expression of many of the selected osteogenic markers, as well as mineral deposition. This study demonstrates an approach to simultaneously target the two essential mechanisms in bone healing: angiogenesis and osteogenesis. The incorporation of cobalt and fluoride into CaPs is a promising method to improve the biological performance of fully synthetic bone graft substitutes.
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Affiliation(s)
- Zeinab Tahmasebi Birgani
- Department of Tissue Regeneration, MIRA Institute for Biomedical Technology and Technical Medicine, University of Twente, P.O. Box 217, 7500 AE, Enschede, The Netherlands
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176
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Fanovich M, Ivanovic J, Zizovic I, Misic D, Jaeger P. Functionalization of polycaprolactone/hydroxyapatite scaffolds with Usnea lethariiformis extract by using supercritical CO 2. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 58:204-12. [DOI: 10.1016/j.msec.2015.08.024] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2015] [Revised: 04/03/2015] [Accepted: 08/14/2015] [Indexed: 11/26/2022]
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177
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178
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Herron M, Schurr MJ, Murphy CJ, McAnulty JF, Czuprynski CJ, Abbott NL. Gallium-Loaded Dissolvable Microfilm Constructs that Provide Sustained Release of Ga(3+) for Management of Biofilms. Adv Healthc Mater 2015; 4:2849-59. [PMID: 26599466 DOI: 10.1002/adhm.201500599] [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: 07/30/2015] [Revised: 09/12/2015] [Indexed: 11/07/2022]
Abstract
The persistence of bacterial biofilms in chronic wounds delays wound healing. Although Ga(3+) can inhibit or kill biofilms, precipitation as Ga(OH)3 has prevented its use as a topical wound treatment. The design of a microfilm construct comprising a polyelectrolyte film that releases noncytotoxic concentrations of Ga(3+) over 20 d and a dissolvable micrometer-thick film of polyvinylalcohol that enables facile transfer onto biomedically important surfaces is reported. By using infrared spectroscopy, it is shown that the density of free carboxylate/carboxylic acid and amine groups within the polyelectrolyte film regulates the capacity of the construct to be loaded with Ga(3+) and that the density of covalent cross-links introduced into the polyelectrolyte film (amide-bonds) controls the release rate of Ga(3+) . Following transfer onto the wound-contact surface of a biologic wound dressing, an optimized construct is demonstrated to release ≈0.7 μg cm(-2) d(-1) of Ga(3+) over 3 weeks, thus continuously replacing Ga(3+) lost to precipitation. The optimized construct inhibits formation of P. aeruginosa (two strains; ATCC 27853 and PA01) biofilms for up to 4 d and causes pre-existing biofilms to disperse. Overall, this study provides designs of polymeric constructs that permit facile modification of the wound-contacting surfaces of dressings and biomaterials to manage biofilms.
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Affiliation(s)
- Maggie Herron
- Department of Chemical and Biological Engineering; University of Wisconsin; 1415 Engineering Drive Madison WI 53706 USA
| | - Michael J. Schurr
- Department of Surgery; School of Medicine; University of Colorado-Denver; 12631 E. 17th Avenue Aurora CO 80045 USA
| | - Christopher J. Murphy
- Department of Ophthalmology and Vision Sciences; School of Medicine; Department of Surgical and Radiological Sciences; School of Veterinary Medicine; University of California-Davis; 1423 Tupper Hall Davis CA 95616 USA
| | - Jonathan F. McAnulty
- Department of Surgical Sciences; School of Veterinary Medicine; University of Wisconsin-Madison; 2015, Linden Dr Madison WI 53706 USA
| | - Charles J. Czuprynski
- Department of Pathobiology; School of Veterinary Medicine; University of Wisconsin-Madison; 2015, Linden Dr Madison WI 53706 USA
| | - Nicholas L. Abbott
- Department of Chemical and Biological Engineering; University of Wisconsin; 1415 Engineering Drive Madison WI 53706 USA
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179
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Baino F, Novajra G, Vitale-Brovarone C. Bioceramics and Scaffolds: A Winning Combination for Tissue Engineering. Front Bioeng Biotechnol 2015; 3:202. [PMID: 26734605 PMCID: PMC4681769 DOI: 10.3389/fbioe.2015.00202] [Citation(s) in RCA: 143] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2015] [Accepted: 12/02/2015] [Indexed: 01/07/2023] Open
Abstract
In the last few decades, we have assisted to a general increase of elder population worldwide associated with age-related pathologies. Therefore, there is the need for new biomaterials that can substitute damaged tissues, stimulate the body’s own regenerative mechanisms, and promote tissue healing. Porous templates referred to as “scaffolds” are thought to be required for three-dimensional tissue growth. Bioceramics, a special set of fully, partially, or non-crystalline ceramics (e.g., calcium phosphates, bioactive glasses, and glass–ceramics) that are designed for the repair and reconstruction of diseased parts of the body, have high potential as scaffold materials. Traditionally, bioceramics have been used to fill and restore bone and dental defects (repair of hard tissues). More recently, this category of biomaterials has also revealed promising applications in the field of soft-tissue engineering. Starting with an overview of the fundamental requirements for tissue engineering scaffolds, this article provides a detailed picture on recent developments of porous bioceramics and composites, including a summary of common fabrication technologies and a critical analysis of structure–property and structure–function relationships. Areas of future research are highlighted at the end of this review, with special attention to the development of multifunctional scaffolds exploiting therapeutic ion/drug release and emerging applications beyond hard tissue repair.
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Affiliation(s)
- Francesco Baino
- Department of Applied Science and Technology, Institute of Materials Physics and Engineering, Politecnico di Torino , Turin , Italy
| | - Giorgia Novajra
- Department of Applied Science and Technology, Institute of Materials Physics and Engineering, Politecnico di Torino , Turin , Italy
| | - Chiara Vitale-Brovarone
- Department of Applied Science and Technology, Institute of Materials Physics and Engineering, Politecnico di Torino , Turin , Italy
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180
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Kilcup N, Gaynard S, Werner-Zwanziger U, Tonkopi E, Hayes J, Boyd D. Stimulation of apoptotic pathways in liver cancer cells: An alternative perspective on the biocompatibility and the utility of biomedical glasses. J Biomater Appl 2015; 30:1445-59. [DOI: 10.1177/0885328215621663] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A host of research opportunities with innumerable clinical applications are open to biomedical glasses if one considers their potential as therapeutic inorganic ion delivery systems. Generally, applications have been limited to repair and regeneration of hard tissues while compositions are largely constrained to the original bioactive glass developed in the 1960s. However, in oncology applications the therapeutic paradigm shifts from repair to targeted destruction. With this in mind, the composition–structure–property–function relationships of vanadium-containing zinc-silicate glasses (0.51SiO2–0.29Na2O–(0.20- X)ZnO– XV2O5, 0 ≤ X ≤ 0.09) were characterized in order to determine their potential as therapeutic inorganic ion delivery systems. Increased V2O5 mole fraction resulted in a linear decrease in density and glass transition temperature (Tg). 29Si MAS NMR peak maxima shifted upfield while 51V MAS NMR peak maxima were independent of V2O5 content and overlapped well with the spectra NaVO3. Increased V2O5 mole fraction caused ion release to increase. When human liver cancer cells, HepG2, were exposed to these ions they demonstrated a concentration-dependent cytotoxic response, mediated by apoptosis. This work demonstrates that the zinc-silicate system studied herein is capable of delivering therapeutic inorganic ions at concentrations that induce apoptotic cell death and provide a simple means to control therapeutic inorganic ion delivery.
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Affiliation(s)
- Nancy Kilcup
- School of Biomedical Engineering, Dalhousie University, Halifax, Canada
| | - Seán Gaynard
- Regenerative Medicine Institute, Bioscience Research Building, National University of Ireland Galway, Galway, Ireland
| | - Ulrike Werner-Zwanziger
- Department of Chemistry and Institute for Research in Materials, Dalhousie University, Halifax, Canada
| | - Elena Tonkopi
- Department of Diagnostic Imaging and Interventional Radiology, QEII Health Sciences Centre, Victoria General Hospital, Victoria Building, Halifax, Canada
- Department of Diagnostic Radiology, Dalhousie University, Halifax, Canada
| | - Jessica Hayes
- Regenerative Medicine Institute, Bioscience Research Building, National University of Ireland Galway, Galway, Ireland
| | - Daniel Boyd
- School of Biomedical Engineering, Dalhousie University, Halifax, Canada
- Department of Diagnostic Imaging and Interventional Radiology, QEII Health Sciences Centre, Victoria General Hospital, Victoria Building, Halifax, Canada
- Department of Applied Oral Sciences, Dentistry Building, Dalhousie University, Halifax, Canada
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181
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Kolmas J, Groszyk E, Piotrowska U. Nanocrystalline hydroxyapatite enriched in selenite and manganese ions: physicochemical and antibacterial properties. NANOSCALE RESEARCH LETTERS 2015; 10:989. [PMID: 26138453 PMCID: PMC4489964 DOI: 10.1186/s11671-015-0989-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2015] [Accepted: 06/23/2015] [Indexed: 05/29/2023]
Abstract
In this work, we used the co-precipitation method to synthesize hydroxyapatite (Mn-SeO3-HA) containing both selenium IV (approximately 3.60 wt.%) and manganese II (approximately 0.29 wt.%). Pure hydroxyapatite (HA), hydroxyapatite-containing manganese (II) ions (Mn-HA), and hydroxyapatite-containing selenite ions alone (SeO3-HA), prepared with the same method, were used as reference materials. The structures and physicochemical properties of all the obtained samples were investigated. PXRD studies showed that the obtained materials were homogeneous and consisted of apatite phase. Introducing selenites into the hydroxyapatite crystals considerably affects the size and degree of ordering. Experiments with transmission electron microscopy (TEM) showed that Mn-SeO3-HA crystals are very small, needle-like, and tend to form agglomerates. Fourier transform infrared spectroscopy (FT-IR) and solid-state nuclear magnetic resonance (ssNMR) were used to analyze the structure of the obtained material. Preliminary microbiological tests showed that the material demonstrated antibacterial activity against Staphylococcus aureus, yet such properties were not confirmed regarding Escherichia coli. PACS codes: 61, 76, 81.
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Affiliation(s)
- Joanna Kolmas
- Department of Inorganic and Analytical Chemistry, Medical University of Warsaw, Faculty of Pharmacy and Laboratory Medicine, ul. Banacha 1, 02-097 Warsaw, Poland
| | - Ewa Groszyk
- Department of Inorganic and Analytical Chemistry, Medical University of Warsaw, Faculty of Pharmacy and Laboratory Medicine, ul. Banacha 1, 02-097 Warsaw, Poland
| | - Urszula Piotrowska
- Department of Inorganic and Analytical Chemistry, Medical University of Warsaw, Faculty of Pharmacy and Laboratory Medicine, ul. Banacha 1, 02-097 Warsaw, Poland
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182
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Miola M, Verné E, Ciraldo FE, Cordero-Arias L, Boccaccini AR. Electrophoretic Deposition of Chitosan/45S5 Bioactive Glass Composite Coatings Doped with Zn and Sr. Front Bioeng Biotechnol 2015; 3:159. [PMID: 26539431 PMCID: PMC4609893 DOI: 10.3389/fbioe.2015.00159] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2015] [Accepted: 09/28/2015] [Indexed: 12/18/2022] Open
Abstract
In this research work, the original 45S5 bioactive glass was modified by introducing zinc and/or strontium oxide (6 mol%) in place of calcium oxide. Sr was added for its ability to stimulate bone formation and Zn for its role in bone metabolism, antibacterial properties, and anti-inflammatory effect. The glasses were produced by means of melting and quenching process. SEM and XRD analyses evidenced that Zr and Sr introduction did not modify the glass structure and morphology while compositional analysis (EDS) demonstrated the effective incorporation of these elements in the glass network. Bioactivity test in simulated body fluid (SBF) up to 1 month evidenced a reduced bioactivity kinetics for Zn-doped glasses. Doped glasses were combined with chitosan to produce organic/inorganic composite coatings on stainless steel AISI 316L by electrophoretic deposition (EPD). Two EPD processes were considered for coating development, namely direct current EPD (DC-EPD) and alternating current EPD (AC-EPD). The stability of the suspension was analyzed and the deposition parameters were optimized. Tape and bending tests demonstrated a good coating-substrate adhesion for coatings containing 45S5-Sr and 45S5-ZnSr glasses, whereas the adhesion to the substrate decreased by using 45S5-Zn glass. FTIR analyses demonstrated the composite nature of coatings and SEM observations indicated that glass particles were well integrated in the polymeric matrix, the coatings were fairly homogeneous and free of cracks; moreover, the AC-EPD technique provided better results than DC-EPD in terms of coating quality. SEM, XRD analyses, and Raman spectroscopy, performed after bioactivity test in SBF solution, confirmed the bioactive behavior of 45S5-Sr-containing coating while coatings containing Zn exhibited no hydroxyapatite formation.
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Affiliation(s)
- Marta Miola
- Department of Applied Science and Technology, Politecnico di Torino, Turin, Italy
| | - Enrica Verné
- Department of Applied Science and Technology, Politecnico di Torino, Turin, Italy
| | | | - Luis Cordero-Arias
- Department of Materials Science and Engineering, Institute of Biomaterials, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Aldo R. Boccaccini
- Department of Materials Science and Engineering, Institute of Biomaterials, University of Erlangen-Nuremberg, Erlangen, Germany
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183
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Cattalini JP, Hoppe A, Pishbin F, Roether J, Boccaccini AR, Lucangioli S, Mouriño V. Novel nanocomposite biomaterials with controlled copper/calcium release capability for bone tissue engineering multifunctional scaffolds. J R Soc Interface 2015; 12:0509. [PMID: 26269233 PMCID: PMC4614462 DOI: 10.1098/rsif.2015.0509] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2015] [Accepted: 07/20/2015] [Indexed: 01/21/2023] Open
Abstract
This work aimed to develop novel composite biomaterials for bone tissue engineering (BTE) made of bioactive glass nanoparticles (Nbg) and alginate cross-linked with Cu(2+) or Ca(2+) (AlgNbgCu, AlgNbgCa, respectively). Two-dimensional scaffolds were prepared and the nanocomposite biomaterials were characterized in terms of morphology, mechanical strength, bioactivity, biodegradability, swelling capacity, release profile of the cross-linking cations and angiogenic properties. It was found that both Cu(2+) and Ca(2+) are released in a controlled and sustained manner with no burst release observed. Finally, in vitro results indicated that the bioactive ions released from both nanocomposite biomaterials were able to stimulate the differentiation of rat bone marrow-derived mesenchymal stem cells towards the osteogenic lineage. In addition, the typical endothelial cell property of forming tubes in Matrigel was observed for human umbilical vein endothelial cells when in contact with the novel biomaterials, particularly AlgNbgCu, which indicates their angiogenic properties. Hence, novel nanocomposite biomaterials made of Nbg and alginate cross-linked with Cu(2+) or Ca(2+) were developed with potential applications for preparation of multifunctional scaffolds for BTE.
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Affiliation(s)
- J P Cattalini
- Department of Pharmaceutical Technology, Faculty of Pharmacy and Biochemistry, University of Buenos Aires, 956 Junín 6th floor, PC1113, Buenos Aires, Argentina
| | - A Hoppe
- Institute of Biomaterials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, Erlangen 91058, Germany
| | - F Pishbin
- Department of Materials, Imperial College London, Prince Consort Road, London SW7 2AZ, UK
| | - J Roether
- Institute of Polymer Materials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, Erlangen 91058, Germany
| | - A R Boccaccini
- Institute of Biomaterials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, Erlangen 91058, Germany
| | - S Lucangioli
- Department of Pharmaceutical Technology, Faculty of Pharmacy and Biochemistry, University of Buenos Aires, 956 Junín 6th floor, PC1113, Buenos Aires, Argentina National Research Council (CONICET), Buenos Aires, Argentina
| | - V Mouriño
- Department of Pharmaceutical Technology, Faculty of Pharmacy and Biochemistry, University of Buenos Aires, 956 Junín 6th floor, PC1113, Buenos Aires, Argentina National Research Council (CONICET), Buenos Aires, Argentina
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184
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Douglas TEL, Pilarz M, Lopez-Heredia M, Brackman G, Schaubroeck D, Balcaen L, Bliznuk V, Dubruel P, Knabe-Ducheyne C, Vanhaecke F, Coenye T, Pamula E. Composites of gellan gum hydrogel enzymatically mineralized with calcium-zinc phosphate for bone regeneration with antibacterial activity. J Tissue Eng Regen Med 2015; 11:1610-1618. [PMID: 26174042 DOI: 10.1002/term.2062] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2015] [Revised: 04/22/2015] [Accepted: 05/04/2015] [Indexed: 11/05/2022]
Abstract
Gellan gum hydrogels functionalized with alkaline phosphatase were enzymatically mineralized with phosphates in mineralization medium containing calcium (Ca) and zinc (Zn) to improve their suitability as biomaterials for bone regeneration. The aims of the study were to endow mineralized hydrogels with antibacterial activity by incorporation of Zn in the inorganic phase, and to investigate the effect of Zn incorporation on the amount and type of mineral formed, the compressive modulus of the mineralized hydrogels and on their ability to support adhesion and growth of MC3T3-E1 osteoblast-like cells. Mineralization medium contained glycerophosphate (0.05 m) and three different molar Ca:Zn ratios, 0.05:0, 0.04:0.01 and 0.025:0.025 (all mol/dm3 ), hereafter referred to as A, B and C, respectively. FTIR, SAED and TEM analysis revealed that incubation for 14 days caused the formation of predominantly amorphous mineral phases in sample groups A, B and C. The presence of Zn in sample groups B and C was associated with a drop in the amount of mineral formed and a smaller mineral deposit morphology, as observed by SEM. ICP-OES revealed that Zn was preferentially incorporated into mineral compared to Ca. Mechanical testing revealed a decrease in compressive modulus in sample group C. Sample groups B and C, but not A, showed antibacterial activity against biofilm-forming, methicillin-resistant Staphylococcus aureus. All sample groups supported cell growth. Zn incorporation increased the viable cell number. The highest values were seen on sample group C. In conclusion, the sample group containing the most Zn, i.e. group C, appears to be the most promising. Copyright © 2015 John Wiley & Sons, Ltd.
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Affiliation(s)
- Timothy E L Douglas
- Polymer Chemistry and Biomaterials (PBM) Group, Department of Organic Chemistry, Ghent University, Belgium
| | - Magdalena Pilarz
- Department of Biomaterials, Faculty of Materials Science and Ceramics, AGH University of Science and Technology, Krakow, Poland
| | - Marco Lopez-Heredia
- Department of Experimental and Orofacial Medicine, Faculty of Dentistry, Philipps University, Marburg, Germany
| | - Gilles Brackman
- Laboratory of Pharmaceutical Microbiology, Ghent University, Belgium
| | - David Schaubroeck
- Centre for Microsystems Technology (CMST), IMEC, and Ghent University, Belgium
| | - Lieve Balcaen
- Department of Analytical Chemistry, Ghent University, Belgium
| | - Vitaliy Bliznuk
- Department of Materials Science and Engineering, Zwijnaarde, Belgium
| | - Peter Dubruel
- Polymer Chemistry and Biomaterials (PBM) Group, Department of Organic Chemistry, Ghent University, Belgium
| | - Christine Knabe-Ducheyne
- Department of Experimental and Orofacial Medicine, Faculty of Dentistry, Philipps University, Marburg, Germany
| | - Frank Vanhaecke
- Department of Analytical Chemistry, Ghent University, Belgium
| | - Tom Coenye
- Laboratory of Pharmaceutical Microbiology, Ghent University, Belgium
| | - Elzbieta Pamula
- Department of Biomaterials, Faculty of Materials Science and Ceramics, AGH University of Science and Technology, Krakow, Poland
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185
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Kim BS, Yang SS, Yoon JH, Lee J. Enhanced bone regeneration by silicon-substituted hydroxyapatite derived from cuttlefish bone. Clin Oral Implants Res 2015; 28:49-56. [PMID: 26073102 DOI: 10.1111/clr.12613] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/13/2015] [Indexed: 01/12/2023]
Abstract
OBJECTIVE There is growing interest in the use of cuttlefish bone (CB) as a bone graft material. Silicon (Si) plays an important role in bone formation and calcification. This study aimed to prepare Si-substituted CB-derived hydroxyapatite (Si-CB-HAp) using a natural CB to improve the bioactivity for bone formation. MATERIALS AND METHODS We prepared Si-HAp from CB (Si-CB-HAp) using a hydrothermal and solvothermal method. The microstructure and chemical composition were characterized by scanning electron microscope (SEM), X-ray diffraction (XRD), and energy dispersive X-ray spectrometer (EDS). The bioactivity of the Si-CB-HAp was evaluated using human mesenchymal stem cells. Furthermore, the in vivo bone regeneration efficiency was evaluated using a rabbit calvarial defect model. RESULTS Our results show that the Si content was 0.77 wt% in Si-CB-HAp, and its original microstructure was conserved. The presence of Si was shown to enhance cell proliferation and early cellular attachment of human mesenchymal stem cells. Additionally, results of alkaline phosphatase activity and real-time PCR for osteoblast marker genes show that Si substitution into CB-HAp enhanced osteoblast differentiation. In addition, in vivo bone defect healing experiments show that the formation of bone with Si-CB-HAp is higher than that with CB-HAp. CONCLUSION These results indicate that Si-CB-HAp may potentially be used as a bone graft material to enhance bone healing.
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Affiliation(s)
- Beom-Su Kim
- Wonkwang Bone Regeneration Research Institute, Wonkwang University, Iksan, Korea.,Bonecell Biotech Inc., Dunsan-dong, Seo-gu, Daejeon, Korea
| | - Sun-Sik Yang
- Department of Dentistry, Oral and Maxillofacial, Wonkwang University, Iksan, Korea
| | - Jung-Hoon Yoon
- Department of Oral & Maxillofacial Pathology, Daejeon Dental Hospital, Wonkwang University, Daejeon, Korea
| | - Jun Lee
- Wonkwang Bone Regeneration Research Institute, Wonkwang University, Iksan, Korea.,Department of Dentistry, Oral and Maxillofacial, Wonkwang University, Iksan, Korea
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186
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Wang H, Zhao S, Xiao W, Cui X, Huang W, Rahaman MN, Zhang C, Wang D. Three-dimensional zinc incorporated borosilicate bioactive glass scaffolds for rodent critical-sized calvarial defects repair and regeneration. Colloids Surf B Biointerfaces 2015; 130:149-56. [DOI: 10.1016/j.colsurfb.2015.03.053] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2015] [Revised: 03/15/2015] [Accepted: 03/25/2015] [Indexed: 12/31/2022]
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187
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Samal SK, Dash M, Shelyakova T, Declercq HA, Uhlarz M, Bañobre-López M, Dubruel P, Cornelissen M, Herrmannsdörfer T, Rivas J, Padeletti G, De Smedt S, Braeckmans K, Kaplan DL, Dediu VA. Biomimetic magnetic silk scaffolds. ACS APPLIED MATERIALS & INTERFACES 2015; 7:6282-92. [PMID: 25734962 DOI: 10.1021/acsami.5b00529] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Magnetic silk fibroin protein (SFP) scaffolds integrating magnetic materials and featuring magnetic gradients were prepared for potential utility in magnetic-field assisted tissue engineering. Magnetic nanoparticles (MNPs) were introduced into SFP scaffolds via dip-coating methods, resulting in magnetic SFP scaffolds with different strengths of magnetization. Magnetic SFP scaffolds showed excellent hyperthermia properties achieving temperature increases up to 8 °C in about 100 s. The scaffolds were not toxic to osteogenic cells and improved cell adhesion and proliferation. These findings suggest that tailored magnetized silk-based biomaterials can be engineered with interesting features for biomaterials and tissue-engineering applications.
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Affiliation(s)
- Sangram K Samal
- †Consiglio Nazionale delle Ricerche-Institute for Nanostructured Materials, I-40129 Bologna-Roma, Italy
- ‡Department of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, Massachusetts 02155, United States
- §Laboratory of General Biochemistry and Physical Pharmacy, Ghent University, Ottergemsesteenweg 460, 9000 Ghent, Belgium
| | | | - Tatiana Shelyakova
- ⊥Laboratory of Biomechanics and Technology Innovation, NABI, Rizzoli Orthopaedic Institute, 40136 Bologna, Italy
| | - Heidi A Declercq
- #Department of Basic Medical Science - Tissue Engineering Group, Ghent University, De Pintelaan 185 (6B3), 9000 Ghent, Belgium
| | - Marc Uhlarz
- ∇Dresden High Magnetic Field Laboratory (HLD-EMFL), Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstrasse 400, 01328 Dresden, Germany
| | - Manuel Bañobre-López
- ○International Iberian Nanotechnology Laboratory (INL), Av. Mestre José Veiga, 4715-330 Braga, Portugal
| | | | - Maria Cornelissen
- #Department of Basic Medical Science - Tissue Engineering Group, Ghent University, De Pintelaan 185 (6B3), 9000 Ghent, Belgium
| | - Thomas Herrmannsdörfer
- ∇Dresden High Magnetic Field Laboratory (HLD-EMFL), Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstrasse 400, 01328 Dresden, Germany
| | - Jose Rivas
- ○International Iberian Nanotechnology Laboratory (INL), Av. Mestre José Veiga, 4715-330 Braga, Portugal
| | - Giuseppina Padeletti
- †Consiglio Nazionale delle Ricerche-Institute for Nanostructured Materials, I-40129 Bologna-Roma, Italy
| | - Stefaan De Smedt
- §Laboratory of General Biochemistry and Physical Pharmacy, Ghent University, Ottergemsesteenweg 460, 9000 Ghent, Belgium
| | - Kevin Braeckmans
- §Laboratory of General Biochemistry and Physical Pharmacy, Ghent University, Ottergemsesteenweg 460, 9000 Ghent, Belgium
| | - David L Kaplan
- ‡Department of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, Massachusetts 02155, United States
| | - V Alek Dediu
- †Consiglio Nazionale delle Ricerche-Institute for Nanostructured Materials, I-40129 Bologna-Roma, Italy
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188
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Gao C, Wei P, Feng P, Xiao T, Shuai C, Peng S. Nano SiO2 and MgO improve the properties of porous β-TCP scaffolds via advanced manufacturing technology. Int J Mol Sci 2015; 16:6818-30. [PMID: 25815597 PMCID: PMC4424989 DOI: 10.3390/ijms16046818] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2014] [Accepted: 03/18/2015] [Indexed: 11/16/2022] Open
Abstract
Nano SiO2 and MgO particles were incorporated into β-tricalcium phosphate (β-TCP) scaffolds to improve the mechanical and biological properties. The porous cylindrical β-TCP scaffolds doped with 0.5 wt % SiO2, 1.0 wt % MgO, 0.5 wt % SiO2 + 1.0 wt % MgO were fabricated via selective laser sintering respectively and undoped β-TCP scaffold was also prepared as control. The phase composition and mechanical strength of the scaffolds were evaluated. X-ray diffraction analysis indicated that the phase transformation from β-TCP to α-TCP was inhibited after the addition of MgO. The compressive strength of scaffold was improved from 3.12 ± 0.36 MPa (β-TCP) to 5.74 ± 0.62 MPa (β-TCP/SiO2), 9.02 ± 0.55 MPa (β-TCP/MgO) and 10.43 ± 0.28 MPa (β-TCP/SiO2/MgO), respectively. The weight loss and apatite-forming ability of the scaffolds were evaluated by soaking them in simulated body fluid. The results demonstrated that both SiO2 and MgO dopings slowed down the degradation rate and improved the bioactivity of β-TCP scaffolds. In vitro cell culture studies indicated that SiO2 and MgO dopings facilitated cell attachment and proliferation. Combined addition of SiO2 and MgO were found optimal in enhancing both the mechanical and biological properties of β-TCP scaffold.
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Affiliation(s)
- Chengde Gao
- Hunan Provincial Tumor Hospital and the Affiliated Tumor Hospital of Xiangya School of Medicine, Central South University, Changsha 410013, China.
- State Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha 410083, China.
| | - Pingpin Wei
- Cancer Research Institute, Central South University, Changsha 410078, China.
| | - Pei Feng
- State Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha 410083, China.
| | - Tao Xiao
- Orthopedic Biomedical Materials Institute, Central South University, Changsha 410083, China.
- Department of Orthopedics, the Second Xiangya Hospital, Central South University, Changsha 410011, China.
| | - Cijun Shuai
- State Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha 410083, China.
- Orthopedic Biomedical Materials Institute, Central South University, Changsha 410083, China.
| | - Shuping Peng
- Hunan Provincial Tumor Hospital and the Affiliated Tumor Hospital of Xiangya School of Medicine, Central South University, Changsha 410013, China.
- Cancer Research Institute, Central South University, Changsha 410078, China.
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189
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Bejarano J, Caviedes P, Palza H. Sol-gel synthesis and in vitro bioactivity of copper and zinc-doped silicate bioactive glasses and glass-ceramics. ACTA ACUST UNITED AC 2015; 10:025001. [PMID: 25760730 DOI: 10.1088/1748-6041/10/2/025001] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Metal doping of bioactive glasses based on ternary 60SiO2-36CaO-4P2O5 (58S) and quaternary 60SiO2-25CaO-11Na2O-4P2O5 (NaBG) mol% compositions synthesized using a sol-gel process was analyzed. In particular, the effect of incorporating 1, 5 and 10 mol% of CuO and ZnO (replacing equivalent quantities of CaO) on the texture, in vitro bioactivity, and cytocompatibility of these materials was evaluated. Our results showed that the addition of metal ions can modulate the textural property of the matrix and its crystal structure. Regarding the bioactivity, after soaking in simulated body fluid (SBF) undoped 58S and NaBG glasses developed an apatite surface layer that was reduced in the doped glasses depending on the type of metal and its concentration with Zn displaying the largest inhibitions. Both the ion release from samples and the ion adsorption from the medium depended on the type of matrix with 58S glasses showing the highest values. Pure NaBG glass was more cytocompatible to osteoblast-like cells (SaOS-2) than pure 58S glass as tested by 3-(4, 5-dimethylthiazol-2-yl)-2, 5-diphenyltetrazolium bromide (MTT) assay. The incorporation of metal ions decreased the cytocompatibility of the glasses depending on their concentration and on the glass matrix doped. Our results show that by changing the glass composition and by adding Cu or Zn, bioactive materials with different textures, bioactivity and cytocompatibility can be synthesized.
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Affiliation(s)
- Julian Bejarano
- Departamento de Ingeniería Química y Biotecnología, Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile, Santiago, Chile
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190
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Abstract
Amputations of the upper extremity are severely debilitating, current treatments support very basic limb movement, and patients undergo extensive physiotherapy and psychological counselling. There is no prosthesis that allows the amputees near-normal function. With increasing number of amputees due to injuries sustained in accidents, natural calamities and international conflicts, there is a growing requirement for novel strategies and new discoveries. Advances have been made in technological, material and in prosthesis integration where researchers are now exploring artificial prosthesis that integrate with the residual tissues and function based on signal impulses received from the residual nerves. Efforts are focused on challenging experts in different disciplines to integrate ideas and technologies to allow for the regeneration of injured tissues, recording on tissue signals and feed-back to facilitate responsive movements and gradations of muscle force. A fully functional replacement and regenerative or integrated prosthesis will rely on interface of biological process with robotic systems to allow individual control of movement such as at the elbow, forearm, digits and thumb in the upper extremity. Regenerative engineering focused on the regeneration of complex tissue and organ systems will be realized by the cross-fertilization of advances over the past thirty years in the fields of tissue engineering, nanotechnology, stem cell science, and developmental biology. The convergence of toolboxes crated within each discipline will allow interdisciplinary teams from engineering, science, and medicine to realize new strategies, mergers of disparate technologies, such as biophysics, smart bionics, and the healing power of the mind. Tackling the clinical challenges, interfacing the biological process with bionic technologies, engineering biological control of the electronic systems, and feed-back will be the important goals in regenerative engineering over the next two decades.
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Affiliation(s)
- Roshan James
- Institute for Regenerative Engineering, University of Connecticut
Health Center, Farmington, Connecticut 06030, USA
- Raymond and Beverly Sackler Center for Biological, Physical and
Engineering Sciences, University of Connecticut Health Center, Connecticut 06030,
USA
- Department of Orthopaedic Surgery, University of Connecticut Health
Center, Farmington, Connecticut 06030, USA
| | - Cato T. Laurencin
- Institute for Regenerative Engineering, University of Connecticut
Health Center, Farmington, Connecticut 06030, USA
- Raymond and Beverly Sackler Center for Biological, Physical and
Engineering Sciences, University of Connecticut Health Center, Connecticut 06030,
USA
- Department of Orthopaedic Surgery, University of Connecticut Health
Center, Farmington, Connecticut 06030, USA
- Connecticut Institute for Clinical and Translational Science,
Farmington, Connecticut 06030, USA
- Department of Chemical, Materials and Biomolecular Engineering,
University of Connecticut, Storrs, Connecticut 06269, USA
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191
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Deliormanlı AM. Synthesis and characterization of cerium- and gallium-containing borate bioactive glass scaffolds for bone tissue engineering. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2015; 26:67. [PMID: 25631259 DOI: 10.1007/s10856-014-5368-0] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2014] [Accepted: 09/12/2014] [Indexed: 06/04/2023]
Abstract
Bioactive glasses are widely used in biomedical applications due to their ability to bond to bone and even to soft tissues. In this study, borate based (13-93B3) bioactive glass powders containing up to 5 wt% Ce2O3 and Ga2O3 were prepared by the melt quench technique. Cerium (Ce+3) and gallium (Ga+3) were chosen because of their low toxicity associated with bacteriostatic properties. Bioactive glass scaffolds were fabricated using the polymer foam replication method. In vitro degradation and bioactivity of the scaffolds were evaluated in SBF under static conditions. Results revealed that the cerium- and gallium-containing borate glasses have much lower degradation rates compared to the bare borate glass 13-93B3. In spite of the increased chemical durability, substituted glasses exhibited a good in vitro bioactive response except when the Ce2O3 content was 5 wt%. Taking into account the high in vitro hydroxyapatite forming ability, borate glass scaffolds containing Ce+3 and Ga+3 therapeutic ions are promising candidates for bone tissue engineering applications.
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Affiliation(s)
- Aylin M Deliormanlı
- Department of Materials Science and Engineering, and Center for Bone and Tissue Repair and Regeneration, Missouri University of Science and Technology, Rolla, MO, USA,
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192
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Tian T, Han Y, Ma B, Wu C, Chang J. Novel Co-akermanite (Ca2CoSi2O7) bioceramics with the activity to stimulate osteogenesis and angiogenesis. J Mater Chem B 2015; 3:6773-6782. [DOI: 10.1039/c5tb01244a] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Both osteogenesis and angiogenesis of bioactive materials play the vital role in the regeneration of large skeletal defects.
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Affiliation(s)
- Tian Tian
- Biomaterials and Tissue Engineering Research Center
- Shanghai Institute of Ceramics
- Chinese Academy of Sciences
- Shanghai 200050
- China
| | - Yan Han
- Med-X Research Institute
- Department of Biomedical Engineering
- Shanghai Jiaotong University
- Shanghai 200030
- China
| | - Bing Ma
- Biomaterials and Tissue Engineering Research Center
- Shanghai Institute of Ceramics
- Chinese Academy of Sciences
- Shanghai 200050
- China
| | - Chengtie Wu
- Biomaterials and Tissue Engineering Research Center
- Shanghai Institute of Ceramics
- Chinese Academy of Sciences
- Shanghai 200050
- China
| | - Jiang Chang
- Biomaterials and Tissue Engineering Research Center
- Shanghai Institute of Ceramics
- Chinese Academy of Sciences
- Shanghai 200050
- China
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193
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Bassett DC, Madzovska I, Beckwith KS, Melø TB, Obradovic B, Sikorski P. Dissolution of copper mineral phases in biological fluids and the controlled release of copper ions from mineralized alginate hydrogels. ACTA ACUST UNITED AC 2014; 10:015006. [PMID: 25546880 DOI: 10.1088/1748-6041/10/1/015006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Here we investigate the dissolution behaviour of copper minerals contained within biocompatible alginate hydrogels. Copper has a number of biological effects and has most recently been evaluated as an alternative to expensive and controversial growth factors for applications in tissue engineering. Precise control and sustained release of copper ions are important due to a narrow therapeutic window of this potentially toxic ion, and alginate would appear to be a good material of choice for this purpose. We found that aqueously insoluble copper minerals could be precipitated during gelling within or mixed into alginate hydrogels in the form of microbeads prior to gelling to serve as depots of copper. These minerals were found to be soluble in a variety of biological fluids relevant to in vitro and in vivo investigations, and the alginate carrier served as a barrier to diffusion of these ions and therefore offered control over the rate and duration of release (Cu(2+) release rates observed between 10-750 µMol g(-1) h(-1) and duration for up to 32 d). Copper mineral and copper mineralized alginate microbeads were characterized using powder x-ray diffraction, FTIR, thermogravimetric analysis and scanning electron microscopy. Dissolution kinetics were studied based on measurements of copper ion concentrations using colourimetric methods. In addition we characterized the complexes formed between released copper ions and biological fluids by electron paramagnetic spectroscopy which offers an insight into the behaviour of these materials in the body.
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Affiliation(s)
- David C Bassett
- Department of Physics, Norwegian University of Science and Technology, Trondheim, 7491, Norway
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194
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Hasan MS, Werner-Zwanziger U, Boyd D. Composition-structure-properties relationship of strontium borate glasses for medical applications. J Biomed Mater Res A 2014; 103:2344-54. [PMID: 25366812 DOI: 10.1002/jbm.a.35361] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2014] [Revised: 10/15/2014] [Accepted: 10/22/2014] [Indexed: 11/06/2022]
Abstract
We have synthesized TiO2 doped strontium borate glasses, 70B2O3-(30-x)SrO-xTiO2 and 70B2 O3 -20SrO(10-x)Na2 O-xTiO2 . The composition dependence of glass structure, density, thermal properties, durability, and cytotoxicity of degradation products was studied. Digesting the glass in mineral acid and detecting the concentrations of various ions using an ICP provided the actual compositions that were 5-8% deviated from the theoretical values. The structure was investigated by means of (11)B magic angle spinning (MAS) NMR spectroscopy. DSC analyses provided the thermal properties and the degradation rates were measured by measuring the weight loss of glass disc-samples in phosphate buffered saline at 37°C in vitro. Finally, the MTT assay was used to analyze the cytotoxicity of the degradation products. The structural analysis revealed that replacing TiO2 for SrO or Na2 O increased the BO3/BO4 ratio suggesting the network-forming role of TiO2 . Thermal properties, density, and degradation rates also followed the structural changes. Varying SrO content predominantly controlled the degradation rates, which in turn controlled the ion release kinetics. A reasonable control (2-25% mass loss in 21 days) over mass loss was achieved in current study. Even though, very high concentrations (up to 5500 ppm B, and 1200 ppm Sr) of ions were released from the ternary glass compositions that saturated the degradation media in 7 days, the degradation products from ternary glass system was found noncytotoxic. However, quaternary glasses demonstrated negative affect on cell viability due to very high (7000 ppm) Na ion concentration. All the glasses investigated in current study are deemed fast degrading with further control over degradation rates, release kinetics desirable.
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Affiliation(s)
- Muhammad S Hasan
- Department of Applied Oral Sciences, School of Biomedical Engineering, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Ulrike Werner-Zwanziger
- Department of Chemistry and Institute for Research in Materials, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Daniel Boyd
- Department of Applied Oral Sciences, School of Biomedical Engineering, Dalhousie University, Halifax, Nova Scotia, Canada
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195
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Ren L, Wong HM, Yan CH, Yeung KWK, Yang K. Osteogenic ability of Cu-bearing stainless steel. J Biomed Mater Res B Appl Biomater 2014; 103:1433-44. [PMID: 25418073 DOI: 10.1002/jbm.b.33318] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2014] [Revised: 09/28/2014] [Accepted: 10/18/2014] [Indexed: 02/05/2023]
Abstract
A newly developed copper-bearing stainless steel (Cu-SS) by directly immobilizing proper amount of Cu into a medical stainless steel (317L SS) during the metallurgical process could enable continuous release of trace amount of Cu(2+) ions, which play the key role to offer the multi-biofunctions of the stainless steel, including the osteogenic ability in the present study. The results of in vitro experiments clearly demonstrated that Cu(2+) ions from Cu-SS could promote the osteogenic differentiation by stimulating the Alkaline phosphatase enzyme activity and the osteogenic gene expressions (Col1a1, Opn, and Runx2), and enhancing the adhesion and proliferation of osteoblasts cultured on its surface. The in vivo test further proved that more new bone tissue formed around the Cu-SS implant with more stable bone-to-implant contact in comparison with the 317L SS. In addition, Cu-SS showed satisfied biocompatibility according to the results of in vitro cytotoxicity and in vivo histocompatibility, and its daily released amount of Cu(2+) ions in physiological saline solution was at trace level of ppb order (1.4 ppb/cm(2) ), which is rather safe to human health. Apart from these results, it was also found that Cu-SS could inhibit the happening of inflammation with lower TNF-α expression in the bone tissue post implantation compared with 317L SS. In addition to good biocompatibility, the overall findings demonstrated that the Cu-SS possessed obvious ability of promoting osteogenesis, indicating a unique application advantage in orthopedics.
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Affiliation(s)
- Ling Ren
- Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, China
| | - Hoi Man Wong
- Department of Orthopaedics and Traumatology, The University of Hong Kong, Pokfulam, Hong Kong, China.,Shenzhen Key Laboratory for Innovative Technology in Orthopaedic Trauma, The University of Hong Kong Shenzhen Hospital, Shenzhen, China
| | - Chun Hoi Yan
- Department of Orthopaedics and Traumatology, The University of Hong Kong, Pokfulam, Hong Kong, China.,Shenzhen Key Laboratory for Innovative Technology in Orthopaedic Trauma, The University of Hong Kong Shenzhen Hospital, Shenzhen, China
| | - Kelvin W K Yeung
- Department of Orthopaedics and Traumatology, The University of Hong Kong, Pokfulam, Hong Kong, China.,Shenzhen Key Laboratory for Innovative Technology in Orthopaedic Trauma, The University of Hong Kong Shenzhen Hospital, Shenzhen, China
| | - Ke Yang
- Department of Orthopaedics and Traumatology, The University of Hong Kong, Pokfulam, Hong Kong, China
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196
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Qiao Y, Zhang W, Tian P, Meng F, Zhu H, Jiang X, Liu X, Chu PK. Stimulation of bone growth following zinc incorporation into biomaterials. Biomaterials 2014; 35:6882-97. [DOI: 10.1016/j.biomaterials.2014.04.101] [Citation(s) in RCA: 204] [Impact Index Per Article: 20.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2014] [Accepted: 04/28/2014] [Indexed: 01/23/2023]
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197
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Baino F, Vitale-Brovarone C. Bioceramics in ophthalmology. Acta Biomater 2014; 10:3372-97. [PMID: 24879312 DOI: 10.1016/j.actbio.2014.05.017] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2014] [Revised: 05/15/2014] [Accepted: 05/16/2014] [Indexed: 12/21/2022]
Abstract
The benefits of ceramics in biomedical applications have been universally appreciated as they exhibit an extraordinarily broad set of physico-chemical, mechanical and biological properties which can be properly tailored by acting on their composition, porosity and surface texture to increase their versatility and suitability for targeted healthcare applications. Bioceramics have traditionally been used for the repair of hard tissues, such as bone and teeth, mainly due to their suitable strength for load-bearing applications, wear resistance (especially alumina, zirconia and composites thereof) and, in some cases, bone-bonding ability (calcium orthophosphates and bioactive glasses). Bioceramics have been also applied in other medical areas, like ophthalmic surgery; although their use in such a context has been scientifically documented since the late 1700s, the potential and importance of ceramic ocular implants still seem to be underestimated and an exhaustive, critical assessment is currently lacking in the relevant literature. The present review aims to fill this gap by giving a comprehensive picture of the ceramic-based materials and implants that are currently used in ophthalmology and pointing out the strengths and weaknesses of the existing devices. A prospect for future research is also provided, highlighting the potential of new, smart bioceramics able to carry specific added values which could have a significant impact on the treatment of ocular diseases.
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198
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Erakovic S, Jankovic A, Tsui GCP, Tang CY, Miskovic-Stankovic V, Stevanovic T. Novel bioactive antimicrobial lignin containing coatings on titanium obtained by electrophoretic deposition. Int J Mol Sci 2014; 15:12294-322. [PMID: 25019343 PMCID: PMC4139845 DOI: 10.3390/ijms150712294] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2014] [Revised: 05/31/2014] [Accepted: 07/01/2014] [Indexed: 02/07/2023] Open
Abstract
Hydroxyapatite (HAP) is the most suitable biocompatible material for bone implant coatings; its brittleness, however, is a major obstacle, and the reason why research focuses on creating composites with biopolymers. Organosolv lignin (Lig) is used for the production of composite coatings, and these composites were examined in this study. Titanium substrate is a key biomedical material due to its well-known properties, but infections of the implantation site still impose a serious threat. One approach to prevent infection is to improve antimicrobial properties of the coating material. Silver doped hydroxyapatite (Ag/HAP) and HAP coatings on titanium were obtained by an electrophoretic deposition method in order to control deposited coating mass and morphology by varying applied voltage and deposition time. The effect of lignin on microstructure, morphology and thermal behavior of biocomposite coatings was investigated. The results showed that higher lignin concentrations protect the HAP lattice during sintering, improving coating stability. The corrosion stability was evaluated in simulated body fluid (SBF) at 37 °C. Newly formed plate-shaped carbonate-HAP was detected, indicating enhanced bioactive performance. The antimicrobial efficiency of Ag/HAP/Lig was confirmed by its higher reduction of bacteria Staphylococcus aureus TL (S. aureus TL) than of HAP/Lig coating. Cytotoxicity assay revealed that both coatings can be classified as non-toxic against healthy immunocompetent peripheral blood mononuclear cells (PBMC).
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Affiliation(s)
- Sanja Erakovic
- Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, Belgrade 11000, Serbia.
| | - Ana Jankovic
- Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, Belgrade 11000, Serbia.
| | - Gary C P Tsui
- Department of Industrial and Systems Engineering, Faculty of Engineering, the Hong Kong Polytechnic University, AG711 Chung Sze Yuen Building, Hung Hom, Kowloon, Hong Kong, China.
| | - Chak-Yin Tang
- Department of Industrial and Systems Engineering, Faculty of Engineering, the Hong Kong Polytechnic University, AG711 Chung Sze Yuen Building, Hung Hom, Kowloon, Hong Kong, China.
| | - Vesna Miskovic-Stankovic
- Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, Belgrade 11000, Serbia.
| | - Tatjana Stevanovic
- Département des Sciences du Bois et de la Forêt, Faculté de Foresterie, de Géographie et de Géomatique, Université Laval, 2425 rue de la Terrasse, Pavillon Gene-H.-Kruger, Québec G1V 0A6, QC, Canada.
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199
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Miola M, Brovarone CV, Maina G, Rossi F, Bergandi L, Ghigo D, Saracino S, Maggiora M, Canuto RA, Muzio G, Vernè E. In vitro study of manganese-doped bioactive glasses for bone regeneration. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 38:107-18. [DOI: 10.1016/j.msec.2014.01.045] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2013] [Revised: 12/29/2013] [Accepted: 01/28/2014] [Indexed: 10/25/2022]
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200
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Cao YJ, Zhu D, Ngai T, Qin L, Wu C, Shen J. Dielectric investigations on how Mg salt is dispersed in and released from polylactic acid. CHINESE JOURNAL OF POLYMER SCIENCE 2014. [DOI: 10.1007/s10118-014-1421-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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