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Fusini F, Girardo M, Aprato A, Massè A, Lorenzi A, Messina D, Colò G. Percutaneous Cement Discoplasty in Degenerative Spinal Disease: Systematic Review of Indications, Clinical Outcomes, and Complications. World Neurosurg 2022; 168:219-226. [DOI: 10.1016/j.wneu.2022.10.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 10/02/2022] [Accepted: 10/03/2022] [Indexed: 11/08/2022]
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2
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Basnett P, Matharu RK, Taylor CS, Illangakoon U, Dawson JI, Kanczler JM, Behbehani M, Humphrey E, Majid Q, Lukasiewicz B, Nigmatullin R, Heseltine P, Oreffo ROC, Haycock JW, Terracciano C, Harding SE, Edirisinghe M, Roy I. Harnessing Polyhydroxyalkanoates and Pressurized Gyration for Hard and Soft Tissue Engineering. ACS APPLIED MATERIALS & INTERFACES 2021; 13:32624-32639. [PMID: 34228435 DOI: 10.1021/acsami.0c19689] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Organ dysfunction is a major cause of morbidity and mortality. Transplantation is typically the only definitive cure, challenged by the lack of sufficient donor organs. Tissue engineering encompasses the development of biomaterial scaffolds to support cell attachment, proliferation, and differentiation, leading to tissue regeneration. For efficient clinical translation, the forming technology utilized must be suitable for mass production. Herein, uniaxial polyhydroxyalkanoate scaffolds manufactured by pressurized gyration, a hybrid scalable spinning technique, are successfully used in bone, nerve, and cardiovascular applications. Chorioallantoic membrane and in vivo studies provided evidence of vascularization, collagen deposition, and cellular invasion for bone tissue engineering. Highly efficient axonal outgrowth was observed in dorsal root ganglion-based 3D ex vivo models. Human induced pluripotent stem cell derived cardiomyocytes exhibited a mature cardiomyocyte phenotype with optimal calcium handling. This study confirms that engineered polyhydroxyalkanoate-based gyrospun fibers provide an exciting and unique toolbox for the development of scalable scaffolds for both hard and soft tissue regeneration.
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Affiliation(s)
- Pooja Basnett
- School of Life Sciences, University of Westminster, London W1W 6UW, U.K
| | - Rupy K Matharu
- Department of Mechanical Engineering, University College London, London WC1E 7JE, U.K
| | - Caroline S Taylor
- Department of Materials Science and Engineering, University of Sheffield, Sheffield S1 3JD, U.K
| | - Upulitha Illangakoon
- Department of Mechanical Engineering, University College London, London WC1E 7JE, U.K
| | - Jonathan I Dawson
- Centre for Human Development, Stem Cells and Regeneration, University of Southampton, Southampton SO16 6YD, U.K
| | - Janos M Kanczler
- Centre for Human Development, Stem Cells and Regeneration, University of Southampton, Southampton SO16 6YD, U.K
| | - Mehrie Behbehani
- Department of Materials Science and Engineering, University of Sheffield, Sheffield S1 3JD, U.K
| | - Eleanor Humphrey
- National Heart and Lung Institute, Imperial College London, London SW3 6LY, U.K
| | - Qasim Majid
- National Heart and Lung Institute, Imperial College London, London SW3 6LY, U.K
| | | | - Rinat Nigmatullin
- School of Life Sciences, University of Westminster, London W1W 6UW, U.K
| | - Phoebe Heseltine
- Department of Mechanical Engineering, University College London, London WC1E 7JE, U.K
| | - Richard O C Oreffo
- Centre for Human Development, Stem Cells and Regeneration, University of Southampton, Southampton SO16 6YD, U.K
| | - John W Haycock
- Department of Materials Science and Engineering, University of Sheffield, Sheffield S1 3JD, U.K
| | - Cesare Terracciano
- National Heart and Lung Institute, Imperial College London, London SW3 6LY, U.K
| | - Sian E Harding
- National Heart and Lung Institute, Imperial College London, London SW3 6LY, U.K
| | - Mohan Edirisinghe
- Department of Mechanical Engineering, University College London, London WC1E 7JE, U.K
| | - Ipsita Roy
- Department of Materials Science and Engineering, University of Sheffield, Sheffield S1 3JD, U.K
- National Heart and Lung Institute, Imperial College London, London SW3 6LY, U.K
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Guzzi F, Candeloro P, Coluccio ML, Cristiani CM, Parrotta EI, Scaramuzzino L, Scalise S, Dattola E, D’Attimo MA, Cuda G, Lamanna E, Passacatini LC, Carbone E, Krühne U, Di Fabrizio E, Perozziello G. A Disposable Passive Microfluidic Device for Cell Culturing. BIOSENSORS-BASEL 2020; 10:bios10030018. [PMID: 32121446 PMCID: PMC7146476 DOI: 10.3390/bios10030018] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Revised: 02/21/2020] [Accepted: 02/26/2020] [Indexed: 12/30/2022]
Abstract
In this work, a disposable passive microfluidic device for cell culturing that does not require any additional/external pressure sources is introduced. By regulating the height of fluidic columns and the aperture and closure of the source wells, the device can provide different media and/or drug flows, thereby allowing different flow patterns with respect to time. The device is made of two Polymethylmethacrylate (PMMA) layers fabricated by micro-milling and solvent assisted bonding and allows us to ensure a flow rate of 18.6 μl/ℎ - 7%/day, due to a decrease of the fluid height while the liquid is driven from the reservoirs into the channels. Simulations and experiments were conducted to characterize flows and diffusion in the culture chamber. Melanoma tumor cells were used to test the device and carry out cell culturing experiments for 48 hours. Moreover, HeLa, Jurkat, A549 and HEK293T cell lines were cultivated successfully inside the microfluidic device for 72 hours.
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Affiliation(s)
- Francesco Guzzi
- Department of Experimental and Clinical Medicine, University of Catanzaro, Germaneto, 88100 Catanzaro, Italy; (F.G.); (P.C.); (M.L.C.); (C.M.C.); (E.I.P.); (L.S.); (S.S.); (E.D.); (M.A.D.); (G.C.); (E.L.); (L.C.P.); (E.C.)
| | - Patrizio Candeloro
- Department of Experimental and Clinical Medicine, University of Catanzaro, Germaneto, 88100 Catanzaro, Italy; (F.G.); (P.C.); (M.L.C.); (C.M.C.); (E.I.P.); (L.S.); (S.S.); (E.D.); (M.A.D.); (G.C.); (E.L.); (L.C.P.); (E.C.)
| | - Maria Laura Coluccio
- Department of Experimental and Clinical Medicine, University of Catanzaro, Germaneto, 88100 Catanzaro, Italy; (F.G.); (P.C.); (M.L.C.); (C.M.C.); (E.I.P.); (L.S.); (S.S.); (E.D.); (M.A.D.); (G.C.); (E.L.); (L.C.P.); (E.C.)
| | - Costanza Maria Cristiani
- Department of Experimental and Clinical Medicine, University of Catanzaro, Germaneto, 88100 Catanzaro, Italy; (F.G.); (P.C.); (M.L.C.); (C.M.C.); (E.I.P.); (L.S.); (S.S.); (E.D.); (M.A.D.); (G.C.); (E.L.); (L.C.P.); (E.C.)
| | - Elvira Immacolata Parrotta
- Department of Experimental and Clinical Medicine, University of Catanzaro, Germaneto, 88100 Catanzaro, Italy; (F.G.); (P.C.); (M.L.C.); (C.M.C.); (E.I.P.); (L.S.); (S.S.); (E.D.); (M.A.D.); (G.C.); (E.L.); (L.C.P.); (E.C.)
| | - Luana Scaramuzzino
- Department of Experimental and Clinical Medicine, University of Catanzaro, Germaneto, 88100 Catanzaro, Italy; (F.G.); (P.C.); (M.L.C.); (C.M.C.); (E.I.P.); (L.S.); (S.S.); (E.D.); (M.A.D.); (G.C.); (E.L.); (L.C.P.); (E.C.)
| | - Stefania Scalise
- Department of Experimental and Clinical Medicine, University of Catanzaro, Germaneto, 88100 Catanzaro, Italy; (F.G.); (P.C.); (M.L.C.); (C.M.C.); (E.I.P.); (L.S.); (S.S.); (E.D.); (M.A.D.); (G.C.); (E.L.); (L.C.P.); (E.C.)
| | - Elisabetta Dattola
- Department of Experimental and Clinical Medicine, University of Catanzaro, Germaneto, 88100 Catanzaro, Italy; (F.G.); (P.C.); (M.L.C.); (C.M.C.); (E.I.P.); (L.S.); (S.S.); (E.D.); (M.A.D.); (G.C.); (E.L.); (L.C.P.); (E.C.)
| | - Maria Antonia D’Attimo
- Department of Experimental and Clinical Medicine, University of Catanzaro, Germaneto, 88100 Catanzaro, Italy; (F.G.); (P.C.); (M.L.C.); (C.M.C.); (E.I.P.); (L.S.); (S.S.); (E.D.); (M.A.D.); (G.C.); (E.L.); (L.C.P.); (E.C.)
| | - Giovanni Cuda
- Department of Experimental and Clinical Medicine, University of Catanzaro, Germaneto, 88100 Catanzaro, Italy; (F.G.); (P.C.); (M.L.C.); (C.M.C.); (E.I.P.); (L.S.); (S.S.); (E.D.); (M.A.D.); (G.C.); (E.L.); (L.C.P.); (E.C.)
| | - Ernesto Lamanna
- Department of Experimental and Clinical Medicine, University of Catanzaro, Germaneto, 88100 Catanzaro, Italy; (F.G.); (P.C.); (M.L.C.); (C.M.C.); (E.I.P.); (L.S.); (S.S.); (E.D.); (M.A.D.); (G.C.); (E.L.); (L.C.P.); (E.C.)
| | - Lucia Carmela Passacatini
- Department of Experimental and Clinical Medicine, University of Catanzaro, Germaneto, 88100 Catanzaro, Italy; (F.G.); (P.C.); (M.L.C.); (C.M.C.); (E.I.P.); (L.S.); (S.S.); (E.D.); (M.A.D.); (G.C.); (E.L.); (L.C.P.); (E.C.)
| | - Ennio Carbone
- Department of Experimental and Clinical Medicine, University of Catanzaro, Germaneto, 88100 Catanzaro, Italy; (F.G.); (P.C.); (M.L.C.); (C.M.C.); (E.I.P.); (L.S.); (S.S.); (E.D.); (M.A.D.); (G.C.); (E.L.); (L.C.P.); (E.C.)
| | - Ulrich Krühne
- Department of Chemical and Biochemical Engineering, Technology University of Denmark, 2800 Kongens Lyngby, Denmark;
| | - Enzo Di Fabrizio
- Physical Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia;
| | - Gerardo Perozziello
- Department of Experimental and Clinical Medicine, University of Catanzaro, Germaneto, 88100 Catanzaro, Italy; (F.G.); (P.C.); (M.L.C.); (C.M.C.); (E.I.P.); (L.S.); (S.S.); (E.D.); (M.A.D.); (G.C.); (E.L.); (L.C.P.); (E.C.)
- Correspondence:
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Komang-Agung IS, Hydravianto L, Sindrawati O, William PS. Effect of Polymethylmethacrylate-Hydroxyapatite Composites on Callus Formation and Compressive Strength in Goat Vertebral Body. Malays Orthop J 2018; 12:6-13. [PMID: 30555640 PMCID: PMC6287135 DOI: 10.5704/moj.1811.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Introduction: Percutaneous vertebroplasty (PV) is one of the available treatments for vertebral compression fracture (VCF). Polymethylmethacrylate (PMMA) is the most common bone substitute used in the procedure, but it has several disadvantages. Bioceramic material, such as hydroxyapatite (HA), has better biological activity compared to PMMA. The aim of this study was to find an optimal biomaterial compound which offers the best mechanical and biological properties to be used in PV. Materials and Methods: This was an experimental study with goat (Capra aegagrus hircus) as an animal model. The animals’ vertebral columns were injected with PMMA-HA compound. Animal samples were divided into four groups, and each group received a different proportion of PMMA:HA compound. The mechanical and biological effects of the compound on the bone were then analysed. The mechanical effect was assessed by measuring the vertebral body’s compressive strength. Meanwhile, the biological effect was assessed by analysing the callus formation in the vertebral body. Results: The optimal callus formation and compressive strength was observed in the group receiving PMMA:HA with a 1:2 ratio. Conclusion: A mixture of PMMA and HA increases the quality of callus formation and the material’s compressive strength. The optimum ratio of PMMA:HA in the compound is 1:2.
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Affiliation(s)
- I S Komang-Agung
- Department of Orthopaedics, Airlangga University, Surabaya, Indonesia
| | - L Hydravianto
- Department of Orthopaedics, Airlangga University, Surabaya, Indonesia
| | - O Sindrawati
- Department of Pathology, Widya Mandala Katholic University, Surabaya, Indonesia
| | - P S William
- *Emergency Room Department, Jombang General Hospital, Jombang, Indonesia
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Zhang X, Kang T, Liang P, Tang Y, Quan C. Biological Activity of an Injectable Biphasic Calcium Phosphate/PMMA Bone Cement for Induced Osteogensis in Rabbit Model. Macromol Biosci 2018; 18. [PMID: 29369492 DOI: 10.1002/mabi.201700331] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Revised: 12/14/2017] [Indexed: 12/18/2022]
Abstract
Polymethylmethacrylate (PMMA) bone cement is widely used in repair of vertebral fracture because of its good biomechanical properties and fast curing. However, the bioinertness of PMMA cement may cause interfacial loosening, fatigue, fracture, and ultimate failure. In this study, biphasic calcium phosphate (BCP) is introduced into PMMA cement to prepare an injectable composite bone cement (BCPx /PMMA) and the content of BCP is optimized to achieve appropriate rate of absorption that matches the bone regeneration. The compressive strength of BCPx /PMMA bone cement is found to comply with the International Standardization Organization standard 5833, and can promote biomineralization as well as adhesion, proliferation, and osteogenic differentiation of Sprague-Dawley rat bone marrow mesenchymal stem cells in vitro. Furthermore, in vivo test performed on a rabbit radius defect model demonstrates that the presence of BCP can significantly improve the osteogenic efficacy of PMMA cement. Therefore, it is anticipated that BCPx /PMMA bone cement, as a promising injectable biomaterial, is of great potential in bone tissue regeneration.
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Affiliation(s)
- Xiashiyao Zhang
- Guangdong Provincial Key Laboratory of Sensor Technology and Biomedical Instruments, Department of Biomedical Engineering, School of Engineering, Sun Yat-sen University, Guangzhou, 510006, P. R. China
| | - Ting Kang
- Guangdong Provincial Key Laboratory of Sensor Technology and Biomedical Instruments, Department of Biomedical Engineering, School of Engineering, Sun Yat-sen University, Guangzhou, 510006, P. R. China
| | - Peiqing Liang
- Guangdong Provincial Key Laboratory of Sensor Technology and Biomedical Instruments, Department of Biomedical Engineering, School of Engineering, Sun Yat-sen University, Guangzhou, 510006, P. R. China
| | - Yong Tang
- Department of Orthopedics, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, 510120, P. R. China
| | - Changyun Quan
- Guangdong Provincial Key Laboratory of Sensor Technology and Biomedical Instruments, Department of Biomedical Engineering, School of Engineering, Sun Yat-sen University, Guangzhou, 510006, P. R. China
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Sa Y, Yang F, Wang Y, Wolke JGC, Jansen JA. Modifications of Poly(Methyl Methacrylate) Cement for Application in Orthopedic Surgery. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 1078:119-134. [DOI: 10.1007/978-981-13-0950-2_7] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Turner RJ, Renshaw JC, Hamilton A. Biogenic Hydroxyapatite: A New Material for the Preservation and Restoration of the Built Environment. ACS APPLIED MATERIALS & INTERFACES 2017; 9:31401-31410. [PMID: 28737897 DOI: 10.1021/acsami.7b07927] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Ordinary Portland cement (OPC) is by weight the world's most produced man-made material and is used in a variety of applications in environments ranging from buildings, to nuclear wasteforms, and within the human body. In this paper, we present for the first time the direct deposition of biogenic hydroxyapatite onto the surface of OPC in a synergistic process which uses the composition of the cement substrate. This hydroxyapatite is very similar to that found in nature, having a similar crystallite size, iron and carbonate substitution, and a semi-crystalline structure. Hydroxyapatites with such a structure are known to be mechanically stronger and more biocompatible than synthetic or biomimetic hydroxyapatites. The formation of this biogenic hydroxyapatite coating therefore has significance in a range of contexts. In medicine, hydroxyapatite coatings are linked to improved biocompatibility of ceramic implant materials. In the built environment, hydroxyapatite coatings have been proposed for the consolidation and protection of sculptural materials such as marble and limestone, with biogenic hydroxyapatites having reduced solubility compared to synthetic apatites. Hydroxyapatites have also been established as effective for the adsorption and remediation of environmental contaminants such as radionuclides and heavy metals. We identify that in addition to providing a biofilm scaffold for nucleation, the metabolic activity of Pseudomonas fluorescens increases the pH of the growth medium to a suitable level for hydroxyapatite formation. The generated ammonia reacts with phosphate in the growth medium, producing ammonium phosphates which are a precursor to the formation of hydroxyapatite under conditions of ambient temperature and pressure. Subsequently, this biogenic deposition process takes place in a simple reaction system under mild chemical conditions and is cheap and easy to apply to fragile biological or architectural surfaces.
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Affiliation(s)
- Ronald J Turner
- Department of Civil and Environmental Engineering, University of Strathclyde , Glasgow, G1 1XQ, United Kingdom
| | - Joanna C Renshaw
- Department of Civil and Environmental Engineering, University of Strathclyde , Glasgow, G1 1XQ, United Kingdom
| | - Andrea Hamilton
- Department of Civil and Environmental Engineering, University of Strathclyde , Glasgow, G1 1XQ, United Kingdom
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Yilmaz B, Doğan S, Çelikler Kasimoğullari S. Hemocompatibility, cytotoxicity, and genotoxicity of poly(methylmethacrylate)/nanohydroxyapatite nanocomposites synthesized by melt blending method. INT J POLYM MATER PO 2017. [DOI: 10.1080/00914037.2017.1331349] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Begümhan Yilmaz
- Department of Molecular Biology and Genetics, Balikesir University Faculty of Science and Literature, Balikesir, Turkey
| | - Serap Doğan
- Department of Molecular Biology and Genetics, Balikesir University Faculty of Science and Literature, Balikesir, Turkey
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Cui X, Huang C, Zhang M, Ruan C, Peng S, Li L, Liu W, Wang T, Li B, Huang W, Rahaman MN, Lu WW, Pan H. Enhanced osteointegration of poly(methylmethacrylate) bone cements by incorporating strontium-containing borate bioactive glass. J R Soc Interface 2017; 14:20161057. [PMID: 28615491 PMCID: PMC5493788 DOI: 10.1098/rsif.2016.1057] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Accepted: 05/23/2017] [Indexed: 11/12/2022] Open
Abstract
Although poly(methylmethacrylate) (PMMA) cements are widely used in orthopaedics, they have numerous drawbacks. This study aimed to improve their bioactivity and osseointegration by incorporating strontium-containing borate bioactive glass (SrBG) as the reinforcement phase and bioactive filler of PMMA cement. The prepared SrBG/PMMA composite cements showed significantly decreased polymerization temperature when compared with PMMA and retained properties of appropriate setting time and high mechanical strength. The bioactivity of SrBG/PMMA composite cements was confirmed in vitro, evidenced by ion release (Ca, P, B and Sr) from SrBG particles. The cellular responses of MC3T3-E1 cells in vitro demonstrated that SrBG incorporation could promote adhesion, migration, proliferation and collagen secretion of cells. Furthermore, our in vivo investigation revealed that SrBG/PMMA composite cements presented better osseointegration than PMMA bone cement. SrBG in the composite cement could stimulate new-bone formation around the interface between the composite cement and host bone at eight and 12 weeks post-implantation, whereas PMMA bone cement only stimulated development of an intervening connective tissue layer. Consequently, the SrBG/PMMA composite cement may be a better alternative to PMMA cement in clinical applications and has promising orthopaedic applications by minimal invasive surgery.
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Affiliation(s)
- Xu Cui
- Center for Human Tissues and Organs Degeneration, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, People's Republic of China
| | - Chengcheng Huang
- Center for Human Tissues and Organs Degeneration, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, People's Republic of China
| | - Meng Zhang
- Center for Human Tissues and Organs Degeneration, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, People's Republic of China
| | - Changshun Ruan
- Center for Human Tissues and Organs Degeneration, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, People's Republic of China
| | - Songlin Peng
- Department of Spine Surgery, Shenzhen People's Hospital, Jinan University School of Medicine, Shenzhen 518020, People's Republic of China
| | - Li Li
- The Fourth Affiliated Hospital of Guangxi Medical University/Liu Zhou Worker's Hospital, Liuzhou 545005, People's Republic of China
| | - Wenlong Liu
- Center for Human Tissues and Organs Degeneration, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, People's Republic of China
| | - Ting Wang
- Shenzhen Key Laboratory for Innovative Technology in Orthopaedic Trauma, Department of Orthopaedics, The University of Hong Kong-Shenzhen Hospital, University of Hong Kong, Shenzhen, People's Republic of China
| | - Bing Li
- The Fourth Affiliated Hospital of Guangxi Medical University/Liu Zhou Worker's Hospital, Liuzhou 545005, People's Republic of China
| | - Wenhai Huang
- Institute of Bioengineering and Information Technology Materials, Tongji University, Shanghai 200092, People's Republic of China
| | - Mohamed N Rahaman
- Department of Materials Science and Engineering, Center for Biomedical Science and Engineering, Missouri University of Science and Technology, Rolla, MO 65409-0340, USA
| | - William W Lu
- Center for Human Tissues and Organs Degeneration, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, People's Republic of China
- Department of Orthopaedics and Traumatology, The University of Hong Kong, Room 907, Lab Block, 21 Sassoon Road, Hong Kong SAR, People's Republic of China
| | - Haobo Pan
- Center for Human Tissues and Organs Degeneration, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, People's Republic of China
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Kaur K, Singh KJ, Anand V, Bhatia G, Kaur R, Kaur M, Nim L, Arora DS. Scaffolds of hydroxyl apatite nanoparticles disseminated in 1, 6-diisocyanatohexane-extended poly(1, 4-butylene succinate)/poly(methyl methacrylate) for bone tissue engineering. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 71:780-790. [PMID: 27987773 DOI: 10.1016/j.msec.2016.10.055] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Revised: 10/09/2016] [Accepted: 10/23/2016] [Indexed: 11/24/2022]
Abstract
Poly(1, 4-butyl succinate) extended 1, 6-diisocyanatohexane (PBSu-DCH) polymers and Polymethylmethacrylate (PMMA) scaffolds decorated with nano hydroxyl apatite have been prepared and characterized for regeneration of bone in cranio-maxillofacial region. Synthesized scaffolds revealed good response in bone regeneration and excellent cell viability in comparison to commercial available glass plate, which lead to better proliferation of MG-63 cell lines. Additionally, they demonstrate high porosity and excellent water retention ability. Moreover, controlled degradation (in pH=7.4) and sustained drug release in pH (4.5 and 7.4) are advantages of these scaffolds to serve as delivery vehicles for therapeutic drugs. Samples also provide the protection against Escherichia coli and Methicillin Resistant Staphylococcus aureus microorganisms which can be helpful for quick recovery of the patient. In-vitro inflammatory response has been assessed via adsorption of human plasma/serum proteins on the surface of the scaffolds. Results suggest that prepared scaffolds have good bone regeneration ability and provide friendly environment for the cell growth with the additional advantage of protection of the surrounding tissues from microbial infection. With all these features, it is speculated that these scaffolds will have wide utility in the area of tissue engineering and regenerative medicine.
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Affiliation(s)
- Kulwinder Kaur
- Department of Physics, Guru Nanak Dev University, Amritsar 143005, India
| | - K J Singh
- Department of Physics, Guru Nanak Dev University, Amritsar 143005, India.
| | - Vikas Anand
- Department of Physics, Guru Nanak Dev University, Amritsar 143005, India
| | - Gaurav Bhatia
- Department of Molecular Biology and Biochemistry, Guru Nanak Dev University, Amritsar 143005, India
| | - Raminderjit Kaur
- Department of Molecular Biology and Biochemistry, Guru Nanak Dev University, Amritsar 143005, India
| | - Manpreet Kaur
- Department of Human Genetics, Guru Nanak Dev University, Amritsar 143005, India
| | - Lovedeep Nim
- Department of Microbiology, Guru Nanak Dev University, Amritsar 143005, India
| | - Daljit Singh Arora
- Department of Microbiology, Guru Nanak Dev University, Amritsar 143005, India
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11
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Van De Walle E, Van Nieuwenhove I, Vanderleyden E, Declercq H, Gellynck K, Schaubroeck D, Ottevaere H, Thienpont H, De Vos WH, Cornelissen M, Van Vlierberghe S, Dubruel P. Polydopamine-Gelatin as Universal Cell-Interactive Coating for Methacrylate-Based Medical Device Packaging Materials: When Surface Chemistry Overrules Substrate Bulk Properties. Biomacromolecules 2015; 17:56-68. [PMID: 26568299 DOI: 10.1021/acs.biomac.5b01094] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Despite its widespread application in the fields of ophthalmology, orthopedics, and dentistry and the stringent need for polymer packagings that induce in vivo tissue integration, the full potential of poly(methyl methacrylate) (PMMA) and its derivatives as medical device packaging material has not been explored yet. We therefore elaborated on the development of a universal coating for methacrylate-based materials that ideally should reveal cell-interactivity irrespective of the polymer substrate bulk properties. Within this perspective, the present work reports on the UV-induced synthesis of PMMA and its more flexible poly(ethylene glycol) (PEG)-based derivative (PMMAPEG) and its subsequent surface decoration using polydopamine (PDA) as well as PDA combined with gelatin B (Gel B). Successful application of both layers was confirmed by multiple surface characterization techniques. The cell interactivity of the materials was studied by performing live-dead assays and immunostainings of the cytoskeletal components of fibroblasts. It can be concluded that only the combination of PDA and Gel B yields materials possessing similar cell interactivities, irrespective of the physicochemical properties of the underlying substrate. The proposed coating outperforms both the PDA functionalized and the pristine polymer surfaces. A universal cell-interactive coating for methacrylate-based medical device packaging materials has thus been realized.
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Affiliation(s)
- Elke Van De Walle
- Polymer Chemistry & Biomaterials Research Group, Department of Organic and Macromolecular Chemistry, Ghent University , Krijgslaan 281 S4Bis, Ghent B-9000, Belgium
| | - Ine Van Nieuwenhove
- Polymer Chemistry & Biomaterials Research Group, Department of Organic and Macromolecular Chemistry, Ghent University , Krijgslaan 281 S4Bis, Ghent B-9000, Belgium
| | - Els Vanderleyden
- Polymer Chemistry & Biomaterials Research Group, Department of Organic and Macromolecular Chemistry, Ghent University , Krijgslaan 281 S4Bis, Ghent B-9000, Belgium
| | - Heidi Declercq
- Tissue Engineering Group, Department of Basic Medical Sciences, Ghent University , De Pintelaan 185 6B3, Ghent B-9000, Belgium
| | - Karolien Gellynck
- Tissue Engineering Group, Department of Basic Medical Sciences, Ghent University , De Pintelaan 185 6B3, Ghent B-9000, Belgium
| | - David Schaubroeck
- Center for Microsystems Technology (CMST), Imec and Ghent University , Technologiepark 914A, B-9052 Ghent, Belgium
| | - Heidi Ottevaere
- B-PHOT Brussels Photonics Team, Department of Applied Physics and Photonics, Vrije Universiteit Brussels , Pleinlaan 2, 1050 Brussels, Belgium
| | - Hugo Thienpont
- B-PHOT Brussels Photonics Team, Department of Applied Physics and Photonics, Vrije Universiteit Brussels , Pleinlaan 2, 1050 Brussels, Belgium
| | - Winnok H De Vos
- Department of Molecular Biotechnology, Ghent University , Coupure links 653, 9000 Ghent, Belgium.,Department of Veterinary Sciences, Antwerp University , Groenenborgerlaan 171, 2020 Antwerp, Belgium
| | - Maria Cornelissen
- Tissue Engineering Group, Department of Basic Medical Sciences, Ghent University , De Pintelaan 185 6B3, Ghent B-9000, Belgium
| | - Sandra Van Vlierberghe
- Polymer Chemistry & Biomaterials Research Group, Department of Organic and Macromolecular Chemistry, Ghent University , Krijgslaan 281 S4Bis, Ghent B-9000, Belgium.,B-PHOT Brussels Photonics Team, Department of Applied Physics and Photonics, Vrije Universiteit Brussels , Pleinlaan 2, 1050 Brussels, Belgium.,Department of Chemistry, University of Antwerp , Universiteitsplein 1, BE-2610 Wilrijk-Antwerp, Belgium
| | - Peter Dubruel
- Polymer Chemistry & Biomaterials Research Group, Department of Organic and Macromolecular Chemistry, Ghent University , Krijgslaan 281 S4Bis, Ghent B-9000, Belgium
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12
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Liu Z, Tang Y, Kang T, Rao M, Li K, Wang Q, Quan C, Zhang C, Jiang Q, Shen H. Synergistic effect of HA and BMP-2 mimicking peptide on the bioactivity of HA/PMMA bone cement. Colloids Surf B Biointerfaces 2015; 131:39-46. [DOI: 10.1016/j.colsurfb.2015.04.032] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2014] [Revised: 03/25/2015] [Accepted: 04/13/2015] [Indexed: 12/28/2022]
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13
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Munro NH, McGrath KM. Advances in techniques and technologies for bone implants. BIOINSPIRED BIOMIMETIC AND NANOBIOMATERIALS 2015. [DOI: 10.1680/bbn.14.00015] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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14
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Study of the viability and adhesion of osteoblast cells to bone cements mixed with hydroxyapatite at different concentrations to use in vertebral augmentation techniques. Rev Esp Cir Ortop Traumatol (Engl Ed) 2015. [DOI: 10.1016/j.recote.2015.01.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
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15
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Chen L, Zhai D, Huan Z, Ma N, Zhu H, Wu C, Chang J. Silicate bioceramic/PMMA composite bone cement with distinctive physicochemical and bioactive properties. RSC Adv 2015. [DOI: 10.1039/c5ra04646g] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
New bioactive silicate/PMMA composite bone cements possess improved setting properties, high mechanical strength, excellent apatite-mineralization ability and biological activity for injectable bone regeneration materials application.
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Affiliation(s)
- Lei Chen
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure
- Shanghai Institute of Ceramics
- Chinese Academy of Sciences
- Shanghai 200050
- China
| | - Dong Zhai
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure
- Shanghai Institute of Ceramics
- Chinese Academy of Sciences
- Shanghai 200050
- China
| | - Zhiguang Huan
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure
- Shanghai Institute of Ceramics
- Chinese Academy of Sciences
- Shanghai 200050
- China
| | - Nan Ma
- Xuhui District Central Hospital
- Shanghai
- China
| | - Haibo Zhu
- Xuhui District Central Hospital
- Shanghai
- China
| | - Chengtie Wu
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure
- Shanghai Institute of Ceramics
- Chinese Academy of Sciences
- Shanghai 200050
- China
| | - Jiang Chang
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure
- Shanghai Institute of Ceramics
- Chinese Academy of Sciences
- Shanghai 200050
- China
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16
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Becker J, Lu L, Runge MB, Zeng H, Yaszemski MJ, Dadsetan M. Nanocomposite bone scaffolds based on biodegradable polymers and hydroxyapatite. J Biomed Mater Res A 2014; 103:2549-57. [PMID: 25504776 DOI: 10.1002/jbm.a.35391] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2014] [Revised: 11/26/2014] [Accepted: 12/04/2014] [Indexed: 01/19/2023]
Abstract
In tissue engineering, development of an osteoconductive construct that integrates with host tissue remains a challenge. In this work, the effect of bone-like minerals on maturation of pre-osteoblast cells was investigated using polymer-mineral scaffolds composed of poly(propylene fumarate)-co-poly(caprolactone) (PPF-co-PCL) and nano-sized hydroxyapatite (HA). The HA of varying concentrations was added to an injectable formulation of PPF-co-PCL and the change in thermal and mechanical properties of the scaffolds was evaluated. No change in onset of degradation temperature was observed due to the addition of HA, however compressive and tensile moduli of copolymer changed significantly when HA amounts were increased in composite formulation. The change in mechanical properties of copolymer was found to correlate well to HA concentration in the constructs. Electron microscopy revealed mineral nucleation and a change in surface morphology and the presence of calcium and phosphate on surfaces was confirmed using energy dispersive X-ray analysis. To characterize the effect of mineral on attachment and maturation of pre-osteoblasts, W20-17 cells were seeded on HA/copolymer composites. We demonstrated that cells attached more to the surface of HA containing copolymers and their proliferation rate was significantly increased. Thus, these findings suggest that HA/PPF-co-PCL composite scaffolds are capable of inducing maturation of pre-osteoblasts and have the potential for use as scaffold in bone tissue engineering.
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Affiliation(s)
- Johannes Becker
- Department of Orthopedic Surgery, Mayo Clinic, College of Medicine, Rochester, Minnesota, 55905.,Department of Traumatology and Sports Injuries, University Hospital Salzburg, Paracelsus Medical University Salzburg, Müllner Hauptstr, 48, Salzburg, 5020, Austria
| | - Lichun Lu
- Department of Orthopedic Surgery, Mayo Clinic, College of Medicine, Rochester, Minnesota, 55905
| | - M Brett Runge
- Department of Orthopedic Surgery, Mayo Clinic, College of Medicine, Rochester, Minnesota, 55905
| | - Heng Zeng
- Department of Orthopedic Surgery, Mayo Clinic, College of Medicine, Rochester, Minnesota, 55905
| | - Michael J Yaszemski
- Department of Orthopedic Surgery, Mayo Clinic, College of Medicine, Rochester, Minnesota, 55905
| | - Mahrokh Dadsetan
- Department of Orthopedic Surgery, Mayo Clinic, College of Medicine, Rochester, Minnesota, 55905
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17
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Pino-Mínguez J, Jorge-Mora A, Couceiro-Otero R, García-Santiago C. Study of the viability and adhesion of osteoblast cells to bone cements mixed with hydroxyapatite at different concentrations to use in vertebral augmentation techniques. Rev Esp Cir Ortop Traumatol (Engl Ed) 2014; 59:122-8. [PMID: 25312256 DOI: 10.1016/j.recot.2014.06.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2014] [Revised: 06/22/2014] [Accepted: 06/25/2014] [Indexed: 11/26/2022] Open
Abstract
OBJECTIVE The purpose of this study is to compare the biocompatibility and the effect in osteoblasts of polymethyl methacrylate alone, and mixed with hydroxyapatite in different concentrations of 5, 10, 15 and 20%, without exceeding 20%, as it can alter mechanical properties of the composite. MATERIAL AND METHODS Experimental study comparing osteoblast response to Polymethyl methacrylate alone and with hydroxyapatite in different concentrations. RESULTS Composites at 15 and 20% obtained better osteoblast response, with higher osteoblastic activity markers, and lower apoptosis markers. Electron microscopy images show improved adhesion of osteoblasts.
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Affiliation(s)
- J Pino-Mínguez
- Servicio de Cirugía Ortopédica y Traumatología, Complejo Hospitalario Universitario de Santiago y Universidad de Santiago de Compostela, Santiago de Compostela, España
| | - A Jorge-Mora
- Servicio de Cirugía Ortopédica y Traumatología, Complejo Hospitalario Universitario de Santiago y Universidad de Santiago de Compostela, Santiago de Compostela, España.
| | - R Couceiro-Otero
- Servicio de Cirugía Ortopédica y Traumatología, Complejo Hospitalario Universitario de Santiago y Universidad de Santiago de Compostela, Santiago de Compostela, España
| | - C García-Santiago
- Servicio de Cirugía Ortopédica y Traumatología, Complejo Hospitalario Universitario de Santiago y Universidad de Santiago de Compostela, Santiago de Compostela, España
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18
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Effect of bioactive extruded PLA/HA composite films on focal adhesion formation of preosteoblastic cells. Colloids Surf B Biointerfaces 2014; 121:409-16. [PMID: 24986753 DOI: 10.1016/j.colsurfb.2014.06.029] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2014] [Revised: 06/10/2014] [Accepted: 06/11/2014] [Indexed: 11/23/2022]
Abstract
The quality of the initial cell attachment to a biomaterial will influence any further cell function, including spreading, proliferation, differentiation and viability. Cell attachment is influenced by the material's ability to adsorb proteins, which is related to the surface chemistry and topography of the material. In this study, we incorporated hydroxyapatite (HA) particles into a poly(lactic acid) (PLA) composite and evaluated the surface structure and the effects of HA density on the initial cell attachment in vitro of murine calvarial preosteoblasts (MC3T3-EI). Scanning electron microscopy (SEM), atomic force microscopy (AFM) and infrared spectroscopy (FTIR) showed that the HA particles were successfully incorporated into the PLA matrix and located at the surface which is of importance in order to maintain the bioactive effect of the HA particles. SEM and AFM investigation revealed that the HA density (particles/area) as well as surface roughness increased with HA loading concentration (i.e. 5, 10, 15 and 20wt%), which promoted protein adsorption. Furthermore, the presence of HA on the surface enhanced cell spreading, increased the formation of actin stress fibers and significantly improved the expression of vinculin in MC3T3-E1 cells which is a key player in the regulation of cell adhesion. These results suggest the potential utility of PLA/HA composites as biomaterials for use as a bone substitute material and in tissue engineering applications.
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19
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Masala S, Taglieri A, Chiaravalloti A, Calabria E, Morini M, Iundusi R, Tarantino U, Simonetti G. Thoraco-lumbar traumatic vertebral fractures augmentation by osteo-conductive and osteo-inductive bone substitute containing strontium–hydroxyapatite: our experience. Neuroradiology 2014; 56:459-66. [DOI: 10.1007/s00234-014-1351-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2013] [Accepted: 03/03/2014] [Indexed: 10/25/2022]
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20
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Effect of Ceramic Particulate on the Mechanical Properties of PVP–HA–Alumina Nanocomposite. ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 2013. [DOI: 10.1007/s13369-013-0765-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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21
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Furtos G, Tomoaia-Cotisel M, Garbo C, Şenilă M, Jumate N, Vida-Simiti I, Prejmerean C. New Composite Bone Cement Based on Hydroxyapatite and Nanosilver. PARTICULATE SCIENCE AND TECHNOLOGY 2013. [DOI: 10.1080/02726351.2013.767293] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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22
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Pon-On W, Charoenphandhu N, Tang IM, Teerapornpuntakit J, Thongbunchoo J, Krishnamra N. Biocomposite of hydroxyapatite-titania rods (HApTiR): Physical properties and in vitro study. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2013; 33:251-8. [PMID: 25428069 DOI: 10.1016/j.msec.2012.08.037] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2012] [Revised: 07/14/2012] [Accepted: 08/29/2012] [Indexed: 11/26/2022]
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23
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Kim DH, Kim P, Suh K, Kyu Choi S, Ho Lee S, Kim B. Modulation of adhesion and growth of cardiac myocytes by surface nanotopography. CONFERENCE PROCEEDINGS : ... ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL CONFERENCE 2012; 2005:4091-4. [PMID: 17281132 DOI: 10.1109/iembs.2005.1615362] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
We have introduced well-defined nanopillar arrays of polyethylene glycol (PEG) as a platform for studying the adhesion and growth of cultured cardiomyocytes. The nanopillar arrays were fabricated by using a simple molding technique involving the placement of a patterned polyurethane acrylate mold on top of a drop-dispensed ultraviolet (UV) curable PEG polymer followed by UV exposure and mold removal. The adhesion and growth of cardiomyocytes turned out be guided by an external nanotopography, which has been characterized in terms of cell morphology and cytoskeletal arrangement. In particular, the nanopillars provided guiding posts to both elongating filopodia and expanding lamellipodia. Interestingly, the 3D growth of cardiomyocytes was mediated by the increased hydrophobicity of the nanostructured PEG substrate, indicating that the cell adhesion and growth is very sensitive to the nanotopography. The precise nanostructures of PEG-based polymer with controlled geometrical features presented in this study not only open opportunities for understanding and tailoring cell adhesion and growth, but could serve as a template for better tissue engineering by controlling cellular activities at the molecular level.
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Affiliation(s)
- Deok-Ho Kim
- Member, IEEE, Microsystem Research Center, Korea Institute of Science and Technology, Seoul, 138-791, Korea
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24
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Barounian M, Hesaraki S, Kazemzadeh A. Development of strong and bioactive calcium phosphate cement as a light-cure organic-inorganic hybrid. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2012; 23:1569-1581. [PMID: 22528071 DOI: 10.1007/s10856-012-4637-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2010] [Accepted: 03/27/2012] [Indexed: 05/31/2023]
Abstract
In this research, light cured calcium phosphate cements (LCCPCs) were developed by mixing a powder phase (P) consisting of tetracalcium phosphate and dicalcium phosphate and a photo-curable resin phase (L), mixture of hydroxyethylmethacrylate (HEMA)/poly acrylic-maleic acid at various P/L ratios of 2.0, 2.4 and 2.8 g/mL. Mechanical strength, phase composition, chemical groups and microstructure of the cured cements were evaluated at pre-set times, i.e. before and after soaking in simulated body fluid (SBF). The proliferation of Rat-derived osteoblastic cells onto the LCCPCs as well as cytotoxicity of cement extracts were determined by cell counting and 3-{4,5-dimethylthiazol-2yl}-2,5-diphenyl-2H-tetrazolium bromide assay after different culture times. It was estimated from Fourier transforming infrared spectra of cured cements that the setting process is ruled by polymerization of HEMA monomers as well as formation of calcium poly-carboxylate salts. Microstructure of the cured cements consisted of calcium phosphate particles surrounded by polymerized resin phase. Formation of nano-sized needlelike calcium phosphate phase on surfaces of cements with P/L ratios of 2.4 and 2.8 g/mL was confirmed by scanning electron microscope images and X-ray diffractometry (XRD) of the cured specimen soaked in SBF for 21 days. Also, XRD patterns revealed that the formed calcium phosphate layer was apatite phase in a poor crystalline form. Biodegradation of the cements was confirmed by weight loss, change in molecular weight of polymer and morphology of the samples after different soaking periods. The maximum compressive strength of LCCPCs governed by resin polymerization and calcium polycarboxylate salts formation was about 80 MPa for cement with P/L ratio of 2.8 g/mL, after incubation for 24 h. The strength of all cements decreased by decreasing P/L ratio as well as increasing soaking time. The preliminary cell studies revealed that LCCPCs could support proliferation of osteoblasts cultured on their surfaces and no cytotoxic effect was observed for the extracts of them.
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Affiliation(s)
- M Barounian
- Materials and Energy Research Center, Tehran, Iran
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25
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Xing ZC, Han SJ, Shin YS, Koo TH, Moon S, Jeong Y, Kang IK. Enhanced osteoblast responses to poly(methyl methacrylate)/hydroxyapatite electrospun nanocomposites for bone tissue engineering. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2012; 24:61-76. [PMID: 22289639 DOI: 10.1163/156856212x623526] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Hydroxyapatite (HA)-containing polymers have been proposed for improving the biological properties of bone cements. Poly(methyl methacrylate) (PMMA) has long been used to secure orthopedic implants to skeletal bones. The aim of this study was to determine whether the incorporation of HA nanoparticles into the PMMA nanofibrous scaffolds enhances the biological functions of osteoblasts. The number of osteoblasts adhered and proliferated on the PMMA/HA nanofibrous scaffolds was significantly larger than that on the PMMA alone. The cytoskeletal organization and alkaline phosphatase (ALP) activity of the osteoblasts on the PMMA/HA nanofibrous scaffolds were clearly higher than that on the PMMA control. The amount of calcium ions released from 20 wt% HA-containing PMMA nanofibrous scaffolds (PMMA/HA20) was much higher than that released from 10 wt% HA-containing PMMA nanofibrous scaffolds (PMMA/HA10) (HA, 10 wt%). These findings suggested that osteoblast differentiation was accelerated by the incorporation of HA into the PMMA nanofibrous scaffolds. Therefore, the incorporation of HA into the PMMA nanofibrous scaffolds could be a useful method. This can be used for providing PMMA scaffolds with enhanced osteogenic properties.
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Affiliation(s)
- Zhi-Cai Xing
- Department of Polymer Science and Engineering , Kyungpook National University, Daegu, South Korea
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26
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Gonçalves G, Cruz SMA, Ramalho A, Grácio J, Marques PAAP. Graphene oxide versus functionalized carbon nanotubes as a reinforcing agent in a PMMA/HA bone cement. NANOSCALE 2012; 4:2937-2945. [PMID: 22499394 DOI: 10.1039/c2nr30303e] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Graphene oxide (GO) and functionalized carbon nanotubes (f-CNTs) (each in the concentration range of 0.01-1.00 wt/wt%) were investigated as the reinforcing agent in a poly(methyl methacrylate) (PMMA)/hydroxyapatite (HA) bone cement. Mixed results were obtained for the changes in the mechanical properties determined (storage modulus, bending strength, and elastic modulus) for the reinforced cement relative to the unreinforced counterpart; that is, some property changes were increased while others were decreased. We postulate that this outcome is a consequence of the fact that each of the nanofillers hampered the polymerization process in the cement; specifically, the nanofiller acts as a scavenger of the radicals produced during polymerization reaction due to the delocalized π-bonds. Results obtained from the chemical structure and polymer chain size distribution determined, respectively, by nuclear magnetic resonance and size exclusion chromatography analysis, on the polymer extracted from the specimens support the postulated mechanism. Furthermore, in the case of the 0.5 wt/wt% GO-reinforced cement, we showed that when the concentration of the radical species in the PMMA bone cement was doubled, mechanical properties markedly improved (relative to the value in the unreinforced cement), suggesting suppression of the aforementioned scavenger activity.
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Affiliation(s)
- Gil Gonçalves
- Nanotechnology Research Division, Center for Mechanical Technology & Automation, University of Aveiro, 3810-193 Aveiro, Portugal
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27
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Preparation of poly(methyl methacrylate) grafted hydroxyapatite nanoparticles via reverse ATRP. J Colloid Interface Sci 2011; 360:415-21. [DOI: 10.1016/j.jcis.2011.04.093] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2011] [Revised: 04/22/2011] [Accepted: 04/24/2011] [Indexed: 11/22/2022]
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Abstract
The state-of-the-art of biocomposites and hybrid biomaterials based on calcium orthophosphates that are suitable for biomedical applications is presented in this review. Since these types of biomaterials offer many significant and exciting possibilities for hard tissue regeneration, this subject belongs to a rapidly expanding area of biomedical research. Through successful combinations of the desired properties of matrix materials with those of fillers (in such systems, calcium orthophosphates might play either role), innovative bone graft biomaterials can be designed. Various types of biocomposites and hybrid biomaterials based on calcium orthophosphates, either those already in use or being investigated for biomedical applications, are extensively discussed. Many different formulations, in terms of the material constituents, fabrication technologies, structural and bioactive properties as well as both in vitro and in vivo characteristics, have already been proposed. Among the others, the nanostructurally controlled biocomposites, those containing nanodimensional compounds, biomimetically fabricated formulations with collagen, chitin and/or gelatin as well as various functionally graded structures seem to be the most promising candidates for clinical applications. The specific advantages of using biocomposites and hybrid biomaterials based on calcium orthophosphates in the selected applications are highlighted. As the way from the laboratory to the hospital is a long one, and the prospective biomedical candidates have to meet many different necessities, this review also examines the critical issues and scientific challenges that require further research and development.
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29
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Exposed hydroxyapatite particles on the surface of photo-crosslinked nanocomposites for promoting MC3T3 cell proliferation and differentiation. Acta Biomater 2011; 7:2185-99. [PMID: 21284960 DOI: 10.1016/j.actbio.2011.01.034] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2010] [Revised: 12/17/2010] [Accepted: 01/25/2011] [Indexed: 11/20/2022]
Abstract
We present a systematic study for investigating the role of exposed hydroxyapatite (HA) nanoparticles in influencing surface characteristics and mouse pre-osteoblastic MC3T3-E1 cell behavior using nanocomposites prepared by photo-crosslinking poly(ε-caprolactone) diacrylate (PCLDA) with HA. PCLDA530 and PCLDA2000 synthesized from poly(ε-caprolactone) diol precursors with nominal molecular weights of 530 and 2000 g mol(-1) were used as the polymer matrices. Crosslinked PCLDA530 was amorphous while crosslinked PCLDA2000 was semi-crystalline. Crosslinked PCLDA/HA composites with different compositions of HA (10%, 20% and 30%) as well as crosslinked PCLDAs were characterized in terms of their composition-dependent physicochemical properties. The tensile, compressive and shear moduli were greatly enhanced by incorporating HA nanoparticles with the polymer matrices. The disk surfaces of original crosslinked PCLDA/HA nanocomposites were removed by cutting using a blade to expose HA nanoparticles that were embedded in the polymer substrates. The composition of HA was much higher on the cut surface, particularly in semi-crystalline crosslinked PCLDA2000/HA nanocomposites. The surface characteristics of original and cut crosslinked PCLDA/HA nanocomposites were compared and correlated with cell behavior on these nanocomposites. MC3T3-E1 cell attachment, proliferation and differentiation were significantly enhanced when the HA composition was increased in original crosslinked PCLDA/HA nanocomposites due to more bioactive HA, higher surface stiffness and rougher topography. More exposed HA on the surface of cut semi-crystalline PCLDA2000/HA nanocomposites resulted in improved hydrophilicity and significantly better MC3T3 cell attachment, proliferation and differentiation compared with the original surfaces. This study suggests that HA nanoparticles may not be fully exploited in polymer/HA nanocomposites where the top polymer surface covers the particles. The removal of this polymer layer can generate more desirable surfaces and osteoconductivity for bone repair and regeneration.
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30
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Misra N, Kapusetti G, Jaiswal S, Maiti P. Toughening of bone cement using nanoparticle: The effect of solvent. J Appl Polym Sci 2011. [DOI: 10.1002/app.33712] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Tanner KE. Bioactive ceramic-reinforced composites for bone augmentation. J R Soc Interface 2010; 7 Suppl 5:S541-57. [PMID: 20591846 DOI: 10.1098/rsif.2010.0229.focus] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Biomaterials have been used to repair the human body for millennia, but it is only since the 1970s that man-made composites have been used. Hydroxyapatite (HA)-reinforced polyethylene (PE) is the first of the 'second-generation' biomaterials that have been developed to be bioactive rather than bioinert. The mechanical properties have been characterized using quasi-static, fatigue, creep and fracture toughness testing, and these studies have allowed optimization of the production method. The in vitro and in vivo biological properties have been investigated with a range of filler content and have shown that the presence of sufficient bioactive filler leads to a bioactive composite. Finally, the material has been applied clinically, initially in the orbital floor and later in the middle ear. From this initial combination of HA in PE other bioactive ceramic polymer composites have been developed.
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Affiliation(s)
- K E Tanner
- School of Engineering, University of Glasgow, Glasgow, UK.
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32
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Lee KH, Rhee SH. The mechanical properties and bioactivity of poly(methyl methacrylate)/SiO2–CaO nanocomposite. Biomaterials 2009; 30:3444-9. [DOI: 10.1016/j.biomaterials.2009.03.002] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2009] [Accepted: 03/02/2009] [Indexed: 10/21/2022]
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Wang S, Kempen DHR, Yaszemski MJ, Lu L. The roles of matrix polymer crystallinity and hydroxyapatite nanoparticles in modulating material properties of photo-crosslinked composites and bone marrow stromal cell responses. Biomaterials 2009; 30:3359-70. [PMID: 19339048 DOI: 10.1016/j.biomaterials.2009.03.015] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2009] [Accepted: 03/10/2009] [Indexed: 10/20/2022]
Affiliation(s)
- Shanfeng Wang
- Department of Materials Science and Engineering, The University of Tennessee, Knoxville, 37996, United States
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Affiliation(s)
| | - Domenica Tonelli
- b Dipartimento di Chimica Fisica e Inorganica , Università di Bologna , Bologna , Italy
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35
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Ruckh T, Porter JR, Allam NK, Feng X, Grimes CA, Popat KC. Nanostructured tantala as a template for enhanced osseointegration. NANOTECHNOLOGY 2009; 20:045102. [PMID: 19417310 DOI: 10.1088/0957-4484/20/4/045102] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The goal of current dental and orthopedic biomaterials research is to design implants that induce controlled and guided tissue growth, and rapid healing. In addition to acceleration of normal wound healing phenomena, these implants should result in the formation of a characteristic interfacial layer with adequate biomechanical properties. To achieve these goals, however, a better understanding of events at the bone-material interface is needed, as well as the development of new materials and approaches that promote osseointegration. Here we present novel nanostructured nanoarrays from tantala that can promote cell adhesion and differentiation. Our results suggest that tantala nanotube arrays enhance osteoblast cell adhesion, proliferation and differentiation. The routes of fabrication of tantala nanotube arrays are flexible and cost-effective, enabling realization of desired platform topologies on existing non-planar orthopedic implants.
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Affiliation(s)
- Timothy Ruckh
- Department of Mechanical Engineering, School of Biomedical Engineering, Colorado State University, Fort Collins, CO 80523, USA
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36
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Barry JJA, Evseev AV, Markov MA, Upton CE, Scotchford CA, Popov VK, Howdle SM. In vitro study of hydroxyapatite-based photocurable polymer composites prepared by laser stereolithography and supercritical fluid extraction. Acta Biomater 2008; 4:1603-10. [PMID: 18595787 DOI: 10.1016/j.actbio.2008.05.024] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2007] [Revised: 04/17/2008] [Accepted: 05/09/2008] [Indexed: 11/30/2022]
Abstract
The fabrication of three-dimensional (3-D) structures using computer-controlled ultraviolet (UV) photopolymerization of acrylates (laser stereolithography) often results in the trapping of residual unreacted monomer and initiator. These residuals can leach from the finished structure and affect the biological response of cells and tissues. Thus the potential applications of these structures for tissue engineering have not been fully realized. In this paper we demonstrate that conventional post-lithography treatments followed by processing in the environmentally benign solvent, supercritical carbon dioxide (scCO(2)), dramatically increased biocompatibility. The scCO(2) processing of pure polyacrylate and polyacrylate/hydroxyapatite composite structures extracts residuals from all structures including those that had received full conventional post-lithography treatment (acetone washing/UV drying). Human osteoblast cells seeded on the extracted surfaces of these structures demonstrated increased cell attachment and proliferation on the scCO(2)-treated materials.
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Affiliation(s)
- John J A Barry
- School of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD, UK
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37
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Preparation and bioactivity evaluation of hydroxyapatite-titania/chitosan-gelatin polymeric biocomposites. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2008. [DOI: 10.1016/j.msec.2007.04.040] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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38
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Yari Sadi A, Shokrgozar MA, Homaeigohar SS, Khavandi A. Biological evaluation of partially stabilized zirconia added HA/HDPE composites with osteoblast and fibroblast cell lines. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2008; 19:2359-2365. [PMID: 18157686 DOI: 10.1007/s10856-007-3336-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2007] [Accepted: 11/21/2007] [Indexed: 05/25/2023]
Abstract
In the present study, the biocompatibility of partially stabilized zirconia (PSZ) added hydroxyapatite (HA)--high density polyethylene (HDPE) composites was evaluated by proliferation and cell attachment assays on two osteoblast cell lines (G-292, Saos-2) and a type of fibroblast cell isolated from bone tissue namely HBF in different time intervals. Cell-material interactions on the surface of the composites were observed by scanning electron microscopy (SEM). The effect of composites on the behavior of osteoblast and fibroblast cells was compared with those of HDPE and Tissue Culture Poly Styrene (TPS) (as negative control) samples. Results showed that the composite samples supported a higher proliferation rate of osteoblast cells in the presence of composite samples as compared to the HDPE and TPS samples after 3, 7 and 14 days of incubation period. It was showed that an equal or in some cases an even higher proliferation rate of G-292 and Saos-2 osteoblast cells on composite samples in compare to negative controls in culture period (P < 0.05). The number of adhered cells on the composite samples was equal and in some cases higher than the number adhered on the HDPE and TPS samples after the above mentioned incubation periods (P < 0.05). Adhered cells presented a normal morphology by SEM and many of the cells were seen to be undergoing cell division.
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Affiliation(s)
- Amir Yari Sadi
- National Cell Bank of Iran, Pasteur Institute of Iran, Tehran, Iran.
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39
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Ni GX, Lu WW, Tang B, Ngan AHW, Chiu KY, Cheung KMC, Li ZY, Luk KDK. Effect of weight-bearing on bone-bonding behavior of strontium-containing hydroxyapatite bone cement. J Biomed Mater Res A 2007; 83:570-6. [PMID: 17607756 DOI: 10.1002/jbm.a.31294] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The purpose of this study was to investigate and compare the chemical composition and nanomechanical properties at the bone-cement interface under non-weight-bearing and weight-bearing conditions, in order to understand the effect of weight-bearing on the bone-bonding behavior of strontium-containing hydroxyapatite (Sr-HA) cement. In one group, Sr-HA cement was injected into rabbit ilium (under non-weight-bearing conditions). Unilateral hip replacement was performed with Sr-HA cement (under weight-bearing conditions) in the other group. Six months later, scanning electron microscopy (SEM) with energy-dispersive X-ray (EDX) analysis and nanoindentation tests were conducted on the interfaces between cancellous bone and the Sr-HA cement. The nanoindentation results revealed two different transitional behaviors under different conditions. nder weight-bearing conditions, both the Young modulus and hardness at the interface were considerably higher than those at either the Sr-HA cement or cancellous bone. On the contrary, under non-weight-bearing conditions, both the Young modulus and hardness values at the interface were lower than those at the cancellous bone, but were higher than the Sr-HA cement. In addition, EDX results showed that the calcium and phosphorus contents at the interface under weight-bearing conditions were considerably higher than those under non-weight-bearing conditions. The differences in chemical composition and nanomechanical properties at the cement-bone interface under two different conditions indicate that weight-bearing produces significant effects on the bone-bonding behavior of the Sr-HA cement.
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Affiliation(s)
- G X Ni
- Department of Rehabilitation Medicine, Fujian Medical University, Fuzhou, China [corrected]
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40
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Hsu SH, Yen HJ, Tsai CL. The response of articular chondrocytes to type II collagen-Au nanocomposites. Artif Organs 2007; 31:854-68. [PMID: 17924990 DOI: 10.1111/j.1525-1594.2007.00482.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The nanocomposites (denoted "CII-Au") of porcine type II collagen (CII) with 0.05, 0.1, 0.5, 1, or 2.5% (wt/wt) Au nanoparticles ( approximately 5 nm) were fabricated for potential use in cartilage tissue engineering. Au formed clusters on the surface of all nanocomposites and appeared to distribute along the collagen fibrils inside the matrix. The addition of Au at low concentrations (< or =0.5%) increased the modulus and viscosity, as well as the free radical-scavenging ability. These effects decreased at higher concentrations of Au. The chondrocytes on CII-Au became spindle-like with lamellipodia formation. Cell proliferation on CII-Au 0.1% was promoted. Nitric oxide (NO) in the culture medium was reduced by CII-Au 0.05% and CII-Au 0.1%. Type I collagen, aggrecan, and Sox 9 gene expressions increased with an increased Au content, but slightly decreased at 2.5% Au. There was no significant difference in the CII gene expression. The cellular uptake of Au was observed but less than that which occurred when 10 ppm of Au was added in culture medium. Chondrocytes cultured with < or =10 ppm of Au nanoparticles showed neither cytotoxicity nor change in gene expression. Au at an appropriate amount could be well dispersed in CII, and enhanced the material modulus, antioxidant effect, as well as the chondrocyte growth and matrix production.
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Affiliation(s)
- Shan-Hui Hsu
- Department of Chemical Engineering, National Chung Hsing University, and Institute of Biomedical Engineering, National Chung Hsing University, Taichung, Taiwan.
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41
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Itthichaisri C, Wiedmann-Al-Ahmad M, Huebner U, Al-Ahmad A, Schoen R, Schmelzeisen R, Gellrich NC. Comparativein vitro study of the proliferation and growth of human osteoblast-like cells on various biomaterials. J Biomed Mater Res A 2007; 82:777-87. [PMID: 17326141 DOI: 10.1002/jbm.a.31191] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
In vitro studies about the growth behavior of osteoblasts onto biomaterials is a basic knowledge and a screening method for the development and application of scaffolds in vivo. In this in vitro study human osteoblast-like (HOB) cells were cultured on seven different biomaterials used in dental and craniomaxillofacial surgery, respectively. The tested biomaterials were synthetic biodegradable (MacroPore, Ethisorb, PDS, Beriplast P) and nonbiodegradable polymers (Palacos) as well as calcium phosphate cement (BoneSource) and titanium. The cell proliferation and cell colonization were analyzed by scanning electron microscopy and EZ4U-test. Statistical analysis were performed. HOB-like cells cultivated on Ethisorb showed the highest proliferation rate. The proliferation rate was statistically significant compared with Palacos, MacroPore, and BoneSource. Whereas, Beriplast, PDS, and titanium yielded lower proliferation rates. However, there was no statistically significant difference compared with Palacos, MacroPore, and BoneSource. SEM analysis showed no significant difference in individual cell features and cell colonization. But an infiltration and a growth of HOB-like cells throughout the porous structure of Ethisorb, which is formed by crossing fibers, is a striking different feature (macrotopography). This feature can explain the highest proliferation rate of Ethisorb. The results showed that HOB-like cells appear to be sensitive to substrate composition and topography. Moreover, the basis for further studies with such biomaterial/osteoblast constructs in vivo are provided. Further focusing points are developing techniques to fabricate three-dimensional porous biomaterial/cell constructs, studying the tissue reaction and the bone regeneration of such constructs compared with the use of autologous bone.
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Affiliation(s)
- C Itthichaisri
- Klinik für Mund-, Kiefer- und Gesichtschirurgie, Universität Freiburg, Hugstetterstrasse 55, D-79106 Freiburg, Germany
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42
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Beloti MM, de Oliveira PT, Tagliani MM, Rosa AL. Bone cell responses to the composite ofRicinus communispolyurethane and alkaline phosphatase. J Biomed Mater Res A 2007; 84:435-41. [PMID: 17618485 DOI: 10.1002/jbm.a.31344] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The aim of this study was to evaluate the response of osteoblastic cells to the composite of Ricinus communis polyurethane (RCP) and alkaline phosphatase (ALP) incubated in synthetic body fluid (SBF). RCP pure (RCPp) and RCP blended with ALP 6 mg/mL polymer (RCP+ALP) were incubated in SBF for 17 days. Four groups of RCP were tested: RCPp, RCP+ALP, and RCPp and RCP+ALP incubated in SBF (RCPp/SBF and RCP+ALP/SBF). Stem cells from rat bone marrow were cultured in conditions that allowed osteoblastic differentiation on RCP discs and were evaluated: cell adhesion, culture growth, cell viability, total protein content, ALP activity, and bone-like nodule formation. Data were compared by ANOVA or Kruskal-Wallis test. The group RCP+ALP was highly cytotoxic and, therefore, was not considered here. Cell adhesion (p = 0.14), culture growth (p = 0.39), viability (p = 0.46) and total protein content (p = 0.12) were not affected by either RCP composition or incubation in SBF. ALP activity was affected (p = 0.0001) as follows: RCPp < RCPp/SBF < RCP+ALP/SBF. Bone-like nodule formation was not observed on all evaluated groups. The composite RCP+ALP prior to SBF incubation is cytotoxic and must not be considered as biomaterial, but the incorporation of ALP to the RCP followed by SBF incubation could be a useful alternative to improve the biological properties of the RCP.
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Affiliation(s)
- Marcio Mateus Beloti
- Department of Morphology, Stomatology, and Physiology, School of Dentistry of Ribeirao Preto, University of Sao Paulo, Sao Paulo, Brazil
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43
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De Santis R, Ambrogi V, Carfagna C, Ambrosio L, Nicolais L. Effect of microencapsulated phase change materials on the thermo-mechanical properties of poly(methyl-methacrylate) based biomaterials. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2006; 17:1219-26. [PMID: 17143752 DOI: 10.1007/s10856-006-0595-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2005] [Accepted: 01/04/2006] [Indexed: 05/12/2023]
Abstract
Microencapsulated paraffin based phase change material (PCM) have been incorporated into Poly(methyl-methacrylate) (PMMA) matrix in order to enhance the thermo-mechanical properties. Calorimetric and mechanical analyses are carried out and the thermo regulating potential of PMMA/PCM composites is investigated. Results indicate that the PCM phase has a negligible effect on the glass transition temperature of the PMMA matrix, and the thermal regulating capability spans around body temperature absorbing or releasing a thermal energy up to 30 J/g. One of the effect of the PCM phase into the cement is the reduction of the peak temperature developed during the exothermal reaction.
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Affiliation(s)
- Roberto De Santis
- IMCB-CNR Institute of Composite and Biomedical Materials-National Research Council, Piazzale Tecchio 80, 80125 Naples, Italy.
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44
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Ni GX, Lu WW, Xu B, Chiu KY, Yang C, Li ZY, Lam WM, Luk KDK. Interfacial behaviour of strontium-containing hydroxyapatite cement with cancellous and cortical bone. Biomaterials 2006; 27:5127-33. [PMID: 16781769 DOI: 10.1016/j.biomaterials.2006.05.030] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2006] [Accepted: 05/18/2006] [Indexed: 02/08/2023]
Abstract
The bone-bonding behaviors of various biomaterials have been extensively investigated. However, the precise mechanisms of bone bonding have not yet been clarified, and the differences in interfacial behaviors of biomaterial bonding with cancellous bone and cortical bone have not yet been understood. In this study, strontium-containing hydroxyapatite (Sr-HA) cement, in which 10% calcium ions were substituted by strontium, was performed in a rabbit hip replacement model. Six months later, the morphology and chemical composition of interfaces between Sr-HA cement with cancellous bone and cortical bone were evaluated by field emission scanning electron microscopy (FESEM) and time-of-flight secondary ion mass spectrometry (ToF-SIMS). Remarkable differences between these two interfaces were suggested both in morphology and chemical compositions. An apatite layer was found between Sr-HA cement and cancellous bone with a thickness of about 70 microm. However, only a very thin interface (about 1 microm) was formed with cortical bone. As for the cancellous bone/cement interface, high ions intensity of Ca, P, Sr, Na, and O were confirmed by FESEM-EDX and ToF-SIMS. Differences in morphology and chemical component between these two interfaces provided convincing evidences for the proposed dissolution-precipitation coupling mechanism in the formation of biological apatite.
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Affiliation(s)
- G X Ni
- Department of Orthopaedics and Traumatology, The University of Hong Kong, Hong Kong, China
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45
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Greish YE, Bender JD, Lakshmi S, Brown PW, Allcock HR, Laurencin CT. Formation of hydroxyapatite-polyphosphazene polymer composites at physiologic temperature. J Biomed Mater Res A 2006; 77:416-25. [PMID: 16482546 DOI: 10.1002/jbm.a.30145] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Aspects of the formation of bone analog composites at 37 degrees C are described. The composites are composed of hydroxyapatite (HAp) and the calcium salt of a biocompatible polymer and are capable of forming under in vivo conditions. Composite formation involves the formation of monolithic HAp from particulate calcium phosphate precursors while Ca ions liberated to the aqueous medium in which this reaction is occurring form crosslinks with the acidic polymer. The reactants are poly[bis(carboxylatophenoxy)phosphazene] (acid-PCPP), tetracalcium phosphate [Ca4(PO4)2O, TetCP], and anhydrous dicalcium phosphate (CaHPO4, DCPA). The effects of the proportion of polymer (5, 10, or 15 wt %) on the kinetics of HAp formation were studied. Compositional evolution of the solid calcium phosphates present was followed by X-ray diffraction and infrared spectroscopy analyses. HAp formation through a dissolution-precipitation process provided a mildly alkaline medium suitable for deprotonation of the acid-PCPP and for the formation of the calcium crosslinks, as monitored by infrared spectroscopy. Concurrence of crosslinking of the polymer and HAp formation was established, indicating true composite formation can be realized at physiologic temperature.
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Affiliation(s)
- Y E Greish
- Intercollege Materials Research Laboratory, 136 Materials Research Laboratory Building, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
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46
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Arndt S, Itthichaisri C, Maier W, Gellrich NC, Schipper J. Proliferation rate of human osteoblast-like cells on alloplastic biomaterials and their clinical application for the transnasal duraplasty procedure. J Cell Mol Med 2006; 10:749-57. [PMID: 16989734 PMCID: PMC3933156 DOI: 10.1111/j.1582-4934.2006.tb00434.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
The possibility of transmission of slow virus infection (HIV) and Creutzfeld-Jakob disease by cadaveric dura implants makes it necessary to find synthetic, absorbable materials for the reconstruction of the dura mater. Various procedures with autologous or alloplastic material are described. Four commerically available biomaterials were choosen to study the proliferation rate and the biocompatibility of human osteoblast-like cells (HOB-like cells) on 2-dimensional material by biochemical analysis. With a proliferation assay, the viability and the proliferation capacity of osteoblast-like cells were evaluated. A clinical trial was added to study resorbable fleece as one of the previously tested biomaterial in a small patient group (8 patients) to close anterior cranial fossa dura defects. The results of the proliferation assay showed the highest proliferation rate of HOB-like cells on resorbable fleece. All patients in our clinical trial with anterior cranial fossa dura defects were successfully treated with resorbable fleece. There was no evidence for persisting cerebrospinal fluid rhinorrhea or foreign body reaction after the period of wound healing. The present study demonstrated an excellent biocompatibility of resorbable fleece. The vicryl fleece is an alternative alloplastic material for endonasal closure of defined substantial defects of the dura with cerebrospinal fluid.
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Affiliation(s)
- Susan Arndt
- Department of Oto-Rhino-Laryngology, Head and Neck Surgery, University of Freiburg, Killianstrasse 5, D-79106 Freiburg, Germany.
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Harle J, Kim HW, Mordan N, Knowles JC, Salih V. Initial responses of human osteoblasts to sol-gel modified titanium with hydroxyapatite and titania composition. Acta Biomater 2006; 2:547-56. [PMID: 16829219 DOI: 10.1016/j.actbio.2006.05.005] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2006] [Revised: 04/19/2006] [Accepted: 05/11/2006] [Indexed: 11/26/2022]
Abstract
Sol-gel thin films of hydroxyapatite (HA) and titania (TiO(2)) have received a great deal of attention in the area of bioactive surface modification of titanium (Ti) implants. Sol-gel coatings were developed on Ti substrates of pure HA and TiO(2) and two composite forms, HA+10% TiO(2) and HA+20% TiO(2), and the biological properties of the coatings were evaluated. All the coating layers exhibited thin and homogeneous structures and phase-pure compositions (either HA or TiO(2)). Primary human osteoblast cells showed good attachment, spreading and proliferation on all the sol-gel coated surfaces, with enhanced cell numbers on all the coated surfaces relative to uncoated Ti control at day 1, as observed by MTT assay and scanning electron microscopy. Cell attachment rates were also enhanced on the pure HA coating relative to control Ti. The pure HA and HA+10% TiO(2) composite coating furthermore enhanced proliferation of osteoblasts at 4 days. Moreover, the gene expression level of several osteogenic markers including bone sialoprotein and osteopontin, as measured by RT-PCR at 24h, was shown to vary according to coating composition. These findings suggest that human primary bone cells show marked and rapid early functional changes in response to HA and TiO(2) sol-gel coatings on Ti.
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Affiliation(s)
- Jamie Harle
- Division of Biomaterials and Tissue Engineering, Eastman Dental Institute, University College London, 256 Gray's Inn Road, London WC1X 8LD, UK
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48
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Sadi AY, Shokrgozar MA, Homaeigohar SS, Hosseinalipour M, Khavandi A, Javadpour J. The effect of partially stabilized zirconia on the biological properties of HA/HDPE composites in vitro. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2006; 17:407-12. [PMID: 16688580 DOI: 10.1007/s10856-006-8467-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2005] [Accepted: 10/21/2005] [Indexed: 05/09/2023]
Abstract
The effect of partially stabilized zirconia (PSZ) on the biological properties of the hyroxyapatite - high density polyethylene (HA/HDPE) composites was studied by investigating the simultaneous effect of hydroxyapatite and PSZ volume fractions on the in vitro response of human osteoblast cells. The biocompatibility of composite samples with different volume fraction of HA and PSZ powders was assessed by proliferation, alkaline phosphatase (ALP) and cell attachment assays on the osteoblast cell line (G-292) in different time periods. The effect of composites on the behavior of G-292 cells was compared with those of HDPE and TPS (Tissue Culture Poly Styrene as negative control) samples. Results showed a higher proliferation rate of G-292 cells in the presence of composite samples as compared to the HDPE sample after 7 and 14 days of incubation period. ALP production rate in all composite samples was higher than HDPE and TPS samples. The number of adhered cells on the composite samples was higher than the number adhered on the HDPE and TPS samples after the above mentioned incubation periods. These findings indicates that the addition of PSZ does not have any adverse affect on the biocompatibility of HA/HDPE composites. In fact in some experiments PSZ added HA/HDPE composites performed better in proliferation, differentiation and attachment of osteoblastic cells.
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Affiliation(s)
- A Yari Sadi
- National Cell Bank of Iran, Pasteur Institute of Iran
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49
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Ni GX, Choy YS, Lu WW, Ngan AHW, Chiu KY, Li ZY, Tang B, Luk KDK. Nano-mechanics of bone and bioactive bone cement interfaces in a load-bearing model. Biomaterials 2006; 27:1963-70. [PMID: 16226309 DOI: 10.1016/j.biomaterials.2005.09.044] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2005] [Accepted: 09/26/2005] [Indexed: 02/05/2023]
Abstract
Many bioactive bone cements were developed for total hip replacement and found to bond with bone directly. However, the mechanical properties at the bone/bone cement interface under load bearing are not fully understood. In this study, a bioactive bone cement, which consists of strontium-containing hydroxyapatite (Sr-HA) powder and bisphenol-alpha-glycidyl dimethacrylate (Bis-GMA)-based resin, was evaluated in rabbit hip replacement for 6 months, and the mechanical properties of interfaces of cancellous bone/Sr-HA cement and cortical bone/Sr-HA cement were investigated by nanoindentation. The results showed that Young's modulus (17.6+/-4.2 GPa) and hardness (987.6+/-329.2 MPa) at interface between cancellous bone and Sr-HA cement were significantly higher than those at the cancellous bone (12.7+/-1.7 GPa; 632.7+/-108.4 MPa) and Sr-HA cement (5.2+/-0.5 GPa; 265.5+/-39.2 MPa); whereas Young's modulus (6.3+/-2.8 GPa) and hardness (417.4+/-164.5 MPa) at interface between cortical bone and Sr-HA cement were significantly lower than those at cortical bone (12.9+/-2.2 GPa; 887.9+/-162.0 MPa), but significantly higher than Sr-HA cement (3.6+/-0.3 GPa; 239.1+/-30.4 MPa). The results of the mechanical properties of the interfaces were supported by the histological observation and chemical composition. Osseointegration of Sr-HA cement with cancellous bone was observed. An apatite layer with high content of calcium and phosphorus was found between cancellous bone and Sr-HA cement. However, no such apatite layer was observed at the interface between cortical bone and Sr-HA cement. And the contents of calcium and phosphorus of the interface were lower than those of cortical bone. The mechanical properties indicated that these two interfaces were diffused interfaces, and cancellous bone or cortical bone was grown into Sr-HA cement 6 months after the implantation.
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Affiliation(s)
- G X Ni
- Department of Orthopaedics and Traumatology, The University of Hong Kong, Hong Kong, China
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50
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Cheung KMC, Lu WW, Luk KDK, Wong CT, Chan D, Shen JX, Qiu GX, Zheng ZM, Li CH, Liu SL, Chan WK, Leong JCY. Vertebroplasty by use of a strontium-containing bioactive bone cement. Spine (Phila Pa 1976) 2005; 30:S84-91. [PMID: 16138071 DOI: 10.1097/01.brs.0000175183.57733.e5] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
STUDY DESIGN A review of the laboratory and clinical data for a new strontium-containing hydroxyapatite bioactive bone cement. OBJECTIVES To compare the properties of the strontium-containing bioactive bone cement with those of polymethyl methacrylate (PMMA) and hydroxyapatite (HA) bone cements. SUMMARY OF BACKGROUND DATA Vertebroplasty and kyphoplasty using conventional PMMA bone cements have been effectively used to treat osteoporotic spine fractures with good short- and medium-term results. However, PMMA has some undesirable properties, including its high setting temperature, lack of osseointegration, and large stiffness mismatch with osteoporotic bone. These properties are responsible for some postoperative complications. METHODS Strontium-containing hydroxyapatite (Sr-HA) bioactive bone cement consists of a filler blend of strontium-containing hydroxyapatite, fumed silica and benzoyl peroxide; and a resin blend of bisphenol A diglycidylether methacrylate, triethylene glycol dimethacrylate, poly(ethylene glycol) methacrylate, and N, N-dimethyl-p-toluidine. Its properties, including mechanical strength, setting temperature, biocompatibility, and osseoinduction, were compared with other cements in vitro and in vivo. Early clinical results are presented. RESULTS The Sr-HA cement has a setting time of 15 to 18 minutes, a maximum setting temperature of 58 degrees C, a compressive strength of 40.9 MPa, bending strength of 31.3 MPa, and a bending modulus of 1,408 MPa. The bending strength and modulus are closer to human cancellous bone. Sr-HA cement promotes osteoblast attachment and mineralization in vitro and bone growth and osseointegration in vivo. In a pilot study, 23 cases of osteoporotic fractures treated with this cement with a mean follow-up of 18 months suggest that it is as effective as PMMA in relieving pain. DISCUSSIONS Oral strontium has been shown to induce new bone formation and is effective in reducing fracture risk in osteoporosis. Our data suggest that strontium delivered locally has the same effect; thus, the combination of strontium with HA in a cement with a low setting temperature, adequate stiffness, and low viscosity makes this a good bioactive cement for vertebroplasty and kyphoplasty.
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Affiliation(s)
- Kenneth M C Cheung
- Department of Orthopaedics and Traumatology, University of Hong Kong, Hong Kong, China.
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