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Hitchon S, Soltanmohammadi P, Milner JS, Holdsworth D, Willing R. Porous versus solid shoulder implants in humeri of different bone densities: A finite element analysis. J Orthop Res 2024; 42:1897-1906. [PMID: 38520665 DOI: 10.1002/jor.25840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 03/09/2024] [Accepted: 03/12/2024] [Indexed: 03/25/2024]
Abstract
Porous metallic prosthesis components can now be manufactured using additive manufacturing techniques, and may prove beneficial for promoting bony ingrowth, for accommodating drug delivery systems, and for reducing stress shielding. Using finite element modeling techniques, 36 scenarios (three porous stems, three bone densities, and four held arm positions) were analysed to assess the viability of porous humeral stems for use in total shoulder arthroplasty, and their resulting mechanobiological impact on the surrounding humerus bone. All three porous stems were predicted to experience stresses below the yield strength of Ti6Al4V (880 MPa) and to be capable of withstanding more than 10 million cycles of each loading scenario before failure. There was an indication that within an 80 mm region of the proximal humerus, there would be a reduction in bone resorption as stem porosity increased. Overall, this study shows promise that these porous structures are mechanically viable for incorporation into permanent shoulder prostheses to combat orthopedic infections.
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Affiliation(s)
- Sydney Hitchon
- School of Biomedical Engineering, Western University, London, Ontario, Canada
- Bone and Joint Institute, Western University, London, Ontario, Canada
| | | | - Jaques S Milner
- Robarts Research Institute, Western University, London, Ontario, Canada
| | - David Holdsworth
- Bone and Joint Institute, Western University, London, Ontario, Canada
- Robarts Research Institute, Western University, London, Ontario, Canada
- Department of Medical Biophysics, Schulich School of Medicine & Dentistry, Western University, London, Ontario, Canada
| | - Ryan Willing
- School of Biomedical Engineering, Western University, London, Ontario, Canada
- Bone and Joint Institute, Western University, London, Ontario, Canada
- Department of Mechanical and Materials Engineering, Western University, London, Ontario, Canada
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2
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Dias-Netipanyj MF, Sopchenski L, Gradowski T, Elifio-Esposito S, Popat KC, Soares P. Crystallinity of TiO 2 nanotubes and its effects on fibroblast viability, adhesion, and proliferation. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2020; 31:94. [PMID: 33128627 DOI: 10.1007/s10856-020-06431-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Accepted: 09/24/2020] [Indexed: 06/11/2023]
Abstract
Titanium and titanium alloys are widely used as a biomaterial due to their mechanical strength, corrosion resistance, low elastic modulus, and excellent biocompatibility. TiO2 nanotubes have excellent bioactivity, stimulating the adhesion, proliferation of fibroblasts and adipose-derived stem cells, production of alkaline phosphatase by osteoblasts, platelets activation, growth of neural cells and adhesion, spreading, growth, and differentiation of rat bone marrow mesenchymal stem cells. In this study, we investigated the functionality of fibroblast on titania nanotube layers annealed at different temperatures. The titania nanotube layer was fabricated by potentiostatic anodization of titanium, then annealed at 300, 530, and 630 °C for 5 h. The resulting nanotube layer was characterized using SEM (Scanning Electron Microscopy), TF-XRD (Thin-film X-ray diffraction), and contact angle goniometry. Fibroblasts viability was determined by the CellTiter-Blue method and cytotoxicity by Lactate Dehydrogenase test, and the cell morphology was analyzed by scanning electron microscopy. Also, cell adherence, proliferation, and morphology were analyzed by fluorescence microscopy. The results indicate that the modification in nanotube crystallinity may provide a favorable surface fibroblast growth, especially on substrates annealed at 530 and 630 °C, indicating that these properties provide a favorable template for biomedical implants.
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Affiliation(s)
- Marcela Ferreira Dias-Netipanyj
- Graduate Program in Health Science, School of Medicine, Pontifícia Universidade Católica do Paraná, Curitiba, Paraná, Brazil
- School of Biomedical Engineering, Colorado State University, Fort Collins, CO, USA
| | - Luciane Sopchenski
- Department of Mechanical Engineering, Polytechnic School, Pontifícia Universidade Católica do Paraná, Curitiba, Paraná, Brazil
| | - Thatyanne Gradowski
- Graduate Program in Health Science, School of Medicine, Pontifícia Universidade Católica do Paraná, Curitiba, Paraná, Brazil
| | - Selene Elifio-Esposito
- Graduate Program in Health Science, School of Medicine, Pontifícia Universidade Católica do Paraná, Curitiba, Paraná, Brazil
| | - Ketul C Popat
- School of Biomedical Engineering, Colorado State University, Fort Collins, CO, USA
- Department of Mechanical Engineering, Colorado State University, Fort Collins, CO, USA
| | - Paulo Soares
- Department of Mechanical Engineering, Polytechnic School, Pontifícia Universidade Católica do Paraná, Curitiba, Paraná, Brazil.
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3
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Lv C, Lan X, Li F, Wang L, Xiao L, Wang C, Shi J, Yu S. A facile acid treatment for P25 modification with enhanced photocatalytic H2 evolution – effect of Brønsted acid sites and oxygen vacancies. Catal Sci Technol 2020. [DOI: 10.1039/c9cy02166c] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Acid treated P25 catalysts (HP25-x, x represents the treatment temperature) were successfully fabricated via a simple soaking and drying process for photocatalytic H2 production.
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Affiliation(s)
- Chao Lv
- Department of Chemistry and Pharmaceutical Science
- Qingdao Agricultural University
- Qingdao
- China
| | - Xuefang Lan
- Department of Chemistry and Pharmaceutical Science
- Qingdao Agricultural University
- Qingdao
- China
| | - Fuqiang Li
- Department of Chemistry and Pharmaceutical Science
- Qingdao Agricultural University
- Qingdao
- China
| | - Lili Wang
- Department of Chemistry and Pharmaceutical Science
- Qingdao Agricultural University
- Qingdao
- China
| | - Liqi Xiao
- Department of Chemistry and Pharmaceutical Science
- Qingdao Agricultural University
- Qingdao
- China
| | - Cheng Wang
- Department of Chemistry and Pharmaceutical Science
- Qingdao Agricultural University
- Qingdao
- China
| | - Jinsheng Shi
- Department of Chemistry and Pharmaceutical Science
- Qingdao Agricultural University
- Qingdao
- China
| | - Shuguang Yu
- Department of Chemistry and Pharmaceutical Science
- Qingdao Agricultural University
- Qingdao
- China
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4
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Sgarminato V, Tonda-Turo C, Ciardelli G. Reviewing recently developed technologies to direct cell activity through the control of pore size: From the macro- to the nanoscale. J Biomed Mater Res B Appl Biomater 2019; 108:1176-1185. [PMID: 31429201 DOI: 10.1002/jbm.b.34467] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Revised: 07/05/2019] [Accepted: 07/29/2019] [Indexed: 12/23/2022]
Abstract
Scaffold pore size plays a fundamental role in the regeneration of new tissue since it has been shown to direct cell activity in situ. It is well known that cellular response changes in relation with pores diameter. Consequently, researchers developed efficient approaches to realize scaffolds with controllable macro-, micro-, and nanoporous architecture. In this context, new strategies aiming at the manufacturing of scaffolds with multiscale pore networks have emerged, in the attempt to mimic the complex hierarchical structures found in living systems. In this review, we aim at providing an overview of the fabrication methods currently adopted to realize scaffolds with controlled, multisized pores highlighting their specific influence on cellular activity.
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Affiliation(s)
- Viola Sgarminato
- Department of Mechanical and Aerospace Engineering, Politecnico di Torino, Turin, Italy
| | - Chiara Tonda-Turo
- Department of Mechanical and Aerospace Engineering, Politecnico di Torino, Turin, Italy.,POLITO BIOMedLAB, Politecnico di Torino, Turin, Italy
| | - Gianluca Ciardelli
- Department of Mechanical and Aerospace Engineering, Politecnico di Torino, Turin, Italy.,POLITO BIOMedLAB, Politecnico di Torino, Turin, Italy.,Department for Materials and Devices of the National Research Council, Institute for the Chemical and Physical Processes (CNR-IPCF UOS), Pisa, Italy
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5
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Shaik MM, Kowshik M. Ellagic acid containing collagen-chitosan scaffolds as potential antioxidative bio-materials for tissue engineering applications. INT J POLYM MATER PO 2018. [DOI: 10.1080/00914037.2018.1443927] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- M. Monsoor Shaik
- Department of Biological Sciences, Birla Institute of Technology and Science Pilani, Goa, India
| | - Meenal Kowshik
- Department of Biological Sciences, Birla Institute of Technology and Science Pilani, Goa, India
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6
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Glypican-based drug releasing titania implants to regulate BMP2 bioactivity as a potential approach for craniosynostosis therapy. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2017. [PMID: 28648641 DOI: 10.1016/j.nano.2017.06.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Advances in molecular biology and nanomedicine based therapies hold promise to obviate the need of multiple surgical interventions (associated with current management) in craniosynostosis by preventing bone re-ossification. One such adjunctive therapy involves application of glypicans 1 and 3 (GPC1 and GPC3) that are BMP inhibitors implicated in downregulating the BMP2 activity in prematurely fusing sutures. Electrochemically anodized Titania nanotube (TNT) arrays have been recognized as a promising localized, long-term drug delivery platform for bone-related therapies. This study presents the application of nanoengineered TNT/Ti implants loaded with recombinant glypicans for craniosynostosis therapy. By using Dual luciferase Reporter assay, we tested the biofunctionality of eluted glypicans from the TNT/Ti implants for BMP2 bioactivity regulation in C2C12 murine myoblast cell line. BMP2 activity was inhibited significantly for up to 15days by the glypicans released from polymer-coated TNT/Ti implants, indicating their potential application in adjunctive craniosynostosis treatment.
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7
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Hirschfeld J, Akinoglu EM, Wirtz DC, Hoerauf A, Bekeredjian-Ding I, Jepsen S, Haddouti EM, Limmer A, Giersig M. Long-term release of antibiotics by carbon nanotube-coated titanium alloy surfaces diminish biofilm formation by Staphylococcus epidermidis. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2017; 13:1587-1593. [PMID: 28115247 DOI: 10.1016/j.nano.2017.01.002] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2016] [Revised: 11/02/2016] [Accepted: 01/06/2017] [Indexed: 01/12/2023]
Abstract
Bacterial biofilms cause a considerable amount of prosthetic joint infections every year, resulting in morbidity and expensive revision surgery. To address this problem, surface modifications of implant materials such as carbon nanotube (CNT) coatings have been investigated in the past years. CNTs are biologically compatible and can be utilized as drug delivery systems. In this study, multi-walled carbon nanotube (MWCNT) coated TiAl6V4 titanium alloy discs were fabricated and impregnated with Rifampicin, and tested for their ability to prevent biofilm formation over a period of ten days. Agar plate-based assays were employed to assess the antimicrobial activity of these surfaces against Staphylococcus epidermidis. It was shown that vertically aligned MWCNTs were more stable against attrition on rough surfaces than on polished TiAl6V4 surfaces. Discs with coated surfaces caused a significant inhibition of biofilm formation for up to five days. Therefore, MWCNT-modified surfaces may be effective against pathogenic biofilm formation on endoprostheses.
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Affiliation(s)
- Josefine Hirschfeld
- Department of Periodontology, Center of Dental and Oral Medicine, University Hospital, Bonn, Germany.
| | - Eser M Akinoglu
- Department of Physics, Freie Universität Berlin, Berlin, Germany; Max Planck Institute of Colloids and Interfaces, Potsdam, Germany.
| | - Dieter C Wirtz
- Department of Orthopedics, University Hospital Bonn, Bonn, Germany.
| | - Achim Hoerauf
- Institute of Medical Microbiology, Immunology and Parasitology, University Hospital Bonn, Bonn, Germany.
| | | | - Søren Jepsen
- Department of Periodontology, Center of Dental and Oral Medicine, University Hospital, Bonn, Germany.
| | | | - Andreas Limmer
- Department of Orthopedics, University Hospital Bonn, Bonn, Germany.
| | - Michael Giersig
- Department of Physics, Freie Universität Berlin, Berlin, Germany; Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Institute of Nanoarchitectures for Energy Conversion, Berlin, Germany.
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8
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Efimov AE, Agapova OI, Safonova LA, Bobrova MM, Volkov AD, Khamkhash L, Agapov II. Cryo scanning probe nanotomography study of the structure of alginate microcarriers. RSC Adv 2017. [DOI: 10.1039/c6ra26516b] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Nanostructure of microparticles of decellularized rat liver ECM on spherical alginate hydrogel microcarriers is analyzed by cryo scanning probe nanotomography.
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Affiliation(s)
- Anton E. Efimov
- Laboratory of Bionanotechnology
- V.I.Shumakov Federal Research Center of Transplantology and Artificial Organs
- Moscow
- 123182 Russia
- SNOTRA LLC
| | - Olga I. Agapova
- Laboratory of Bionanotechnology
- V.I.Shumakov Federal Research Center of Transplantology and Artificial Organs
- Moscow
- 123182 Russia
| | - Liubov A. Safonova
- Laboratory of Bionanotechnology
- V.I.Shumakov Federal Research Center of Transplantology and Artificial Organs
- Moscow
- 123182 Russia
- Bioengineering Department
| | - Maria M. Bobrova
- Laboratory of Bionanotechnology
- V.I.Shumakov Federal Research Center of Transplantology and Artificial Organs
- Moscow
- 123182 Russia
- Bioengineering Department
| | - Alexey D. Volkov
- National Laboratory Astana
- Nazarbayev University
- 010000 Astana
- Kazakhstan
| | - Laura Khamkhash
- National Laboratory Astana
- Nazarbayev University
- 010000 Astana
- Kazakhstan
| | - Igor I. Agapov
- Laboratory of Bionanotechnology
- V.I.Shumakov Federal Research Center of Transplantology and Artificial Organs
- Moscow
- 123182 Russia
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9
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Golda-Cepa M, Chorylek A, Chytrosz P, Brzychczy-Wloch M, Jaworska J, Kasperczyk J, Hakkarainen M, Engvall K, Kotarba A. Multifunctional PLGA/Parylene C Coating for Implant Materials: An Integral Approach for Biointerface Optimization. ACS APPLIED MATERIALS & INTERFACES 2016; 8:22093-22105. [PMID: 27500860 DOI: 10.1021/acsami.6b08025] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Functionalizing implant surfaces is critical for improving their performance. An integrated approach was employed to develop a multifunctional implant coating based on oxygen plasma-modified parylene C and drug-loaded, biodegradable poly(dl-lactide-co-glycolide) (PLGA). The key functional attributes of the coating (i.e., anti-corrosion, biocompatible, anti-infection, and therapeutic) were thoroughly characterized at each fabrication step by spectroscopic, microscopic, and biologic methods and at different scales, ranging from molecular, through the nano- and microscales to the macroscopic scale. The chemistry of each layer was demonstrated separately, and their mutual affinity was shown to be indispensable for the development of versatile coatings for implant applications.
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Affiliation(s)
- M Golda-Cepa
- Faculty of Chemistry, Jagiellonian University , Ingardena 3, 30-060 Krakow, Poland
| | - A Chorylek
- Faculty of Chemistry, Jagiellonian University , Ingardena 3, 30-060 Krakow, Poland
| | - P Chytrosz
- Faculty of Chemistry, Jagiellonian University , Ingardena 3, 30-060 Krakow, Poland
| | - M Brzychczy-Wloch
- Department of Bacteriology, Microbial Ecology and Parasitology, Jagiellonian University Medical College , Czysta 18, 31-121 Krakow, Poland
| | - J Jaworska
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences , Curie Skłodowskiej 34, 41-819 Zabrze, Poland
| | - J Kasperczyk
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences , Curie Skłodowskiej 34, 41-819 Zabrze, Poland
| | - M Hakkarainen
- Department of Fiber and Polymer Technology, KTH Royal Institute of Technology , SE-100 44 Stockholm, Sweden
| | - K Engvall
- Department of Chemical Engineering and Technology, KTH Royal Institute of Technology , SE-100 44 Stockholm, Sweden
| | - A Kotarba
- Faculty of Chemistry, Jagiellonian University , Ingardena 3, 30-060 Krakow, Poland
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10
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Gallo J, Panacek A, Prucek R, Kriegova E, Hradilova S, Hobza M, Holinka M. Silver Nanocoating Technology in the Prevention of Prosthetic Joint Infection. MATERIALS (BASEL, SWITZERLAND) 2016; 9:E337. [PMID: 28773461 PMCID: PMC5503077 DOI: 10.3390/ma9050337] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Revised: 04/26/2016] [Accepted: 04/27/2016] [Indexed: 02/06/2023]
Abstract
Prosthetic joint infection (PJI) is a feared complication of total joint arthroplasty associated with increased morbidity and mortality. There is a growing body of evidence that bacterial colonization and biofilm formation are critical pathogenic events in PJI. Thus, the choice of biomaterials for implanted prostheses and their surface modifications may significantly influence the development of PJI. Currently, silver nanoparticle (AgNP) technology is receiving much interest in the field of orthopaedics for its antimicrobial properties and a strong anti-biofilm potential. The great advantage of AgNP surface modification is a minimal release of active substances into the surrounding tissue and a long period of effectiveness. As a result, a controlled release of AgNPs could ensure antibacterial protection throughout the life of the implant. Moreover, the antibacterial effect of AgNPs may be strengthened in combination with conventional antibiotics and other antimicrobial agents. Here, our main attention is devoted to general guidelines for the design of antibacterial biomaterials protected by AgNPs, its benefits, side effects and future perspectives in PJI prevention.
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Affiliation(s)
- Jiri Gallo
- Department of Orthopaedics, Faculty of Medicine and Dentistry, Palacký University Olomouc, I. P. Pavlova 6, Olomouc 779 00, Czech Republic.
| | - Ales Panacek
- Regional Centre of Advanced Technologies and Materials, Palacký University Olomouc, Šlechtitelů 27, Olomouc 783 71, Czech Republic.
| | - Robert Prucek
- Regional Centre of Advanced Technologies and Materials, Palacký University Olomouc, Šlechtitelů 27, Olomouc 783 71, Czech Republic.
| | - Eva Kriegova
- Department of Immunology, Faculty of Medicine and Dentistry, Palacký University Olomouc, Hněvotínská 3, Olomouc 779 00, Czech Republic.
| | - Sarka Hradilova
- Regional Centre of Advanced Technologies and Materials, Palacký University Olomouc, Šlechtitelů 27, Olomouc 783 71, Czech Republic.
| | - Martin Hobza
- Department of Orthopaedics, Faculty of Medicine and Dentistry, Palacký University Olomouc, I. P. Pavlova 6, Olomouc 779 00, Czech Republic.
| | - Martin Holinka
- Department of Orthopaedics, Faculty of Medicine and Dentistry, Palacký University Olomouc, I. P. Pavlova 6, Olomouc 779 00, Czech Republic.
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11
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Steeves AJ, Atwal A, Schock SC, Variola F. Evaluation of the direct effects of poly(dopamine) on the in vitro response of human osteoblastic cells. J Mater Chem B 2016; 4:3145-3156. [DOI: 10.1039/c5tb02510a] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Functional poly(dopamine) coatings promise to become an efficient strategy to endow biomaterials with enhanced bioactive properties.
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Affiliation(s)
- Alexander J. Steeves
- Faculty of Engineering
- Department of Mechanical Engineering
- University of Ottawa
- Canada
| | - Aman Atwal
- Faculty of Science
- Department of Biopharmaceutical Sciences
- University of Ottawa
- Canada
| | - Sarah C. Schock
- The Children's Hospital of Eastern Ontario (CHEO) Research Institute
- Canada
- Faculty of Medicine
- Department of Cellular and Molecular Medicine
- University of Ottawa
| | - Fabio Variola
- Faculty of Engineering
- Department of Mechanical Engineering
- University of Ottawa
- Canada
- Faculty of Medicine
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12
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Amrani S, Atwal A, Variola F. Modulating the elution of antibiotics from nanospongy titanium surfaces with a pH-sensitive coating. RSC Adv 2015. [DOI: 10.1039/c5ra18296d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Fraction of vancomycin eluted at 3 different pHs from bare nanospongy titanium (left) and from nanospongy titanium coated with uncross-linked (center, CH:PEG) and cross-linked (right, CH:PEG + GEN) chitosan–poly(ethylene glycol.
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Affiliation(s)
- Selya Amrani
- Department of Mechanical Engineering
- University of Ottawa
- Canada
| | - Aman Atwal
- Department of Mechanical Engineering
- University of Ottawa
- Canada
- Department of Biopharmaceutical Sciences
- University of Ottawa
| | - Fabio Variola
- Department of Mechanical Engineering
- University of Ottawa
- Canada
- Department of Physics
- University of Ottawa
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13
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Abstract
Recent progress in surface science, nanotechnology and biophysics has cast new light on the correlation between the physicochemical properties of biomaterials and the resulting biological response. One experimental tool that promises to generate an increasingly more sophisticated knowledge of how proteins, cells and bacteria interact with nanostructured surfaces is the atomic force microscope (AFM). This unique instrument permits to close in on interfacial events at the scale at which they occur, the nanoscale. This perspective covers recent developments in the exploitation of the AFM, and suggests insights on future opportunities that can arise from the exploitation of this powerful technique.
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Affiliation(s)
- Fabio Variola
- Faculty of Engineering, Department of Mechanical Engineering, University of Ottawa, Ottawa, ON K1N 6N5, Canada.
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14
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Patel KD, Kim TH, Lee EJ, Han CM, Lee JY, Singh RK, Kim HW. Nanostructured biointerfacing of metals with carbon nanotube/chitosan hybrids by electrodeposition for cell stimulation and therapeutics delivery. ACS APPLIED MATERIALS & INTERFACES 2014; 6:20214-24. [PMID: 25325144 DOI: 10.1021/am505759p] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Exploring the biological interfaces of metallic implants has been an important issue in achieving biofunctional success. Here we develop a biointerface with nanotopological features and bioactive composition, comprising a carbon nanotube (CNT) and chitosan (Chi) hybrid, via an electrophoretic deposition (EPD). The physicochemical properties, in vitro biocompatibility, and protein delivering capacity of the decorated nanohybrid layer were investigated, to address its potential usefulness as bone regenerating implants. Over a wide compositional range, the nanostructured hybrid interfaces were successfully formed with varying thicknesses, depending on the electrodeposition parameters. CNT-Chi hybrid interfaces showed a time-sequenced degradation in saline water, and a rapid induction of hydroxyapatite mineral in a simulated body fluid. The nanostructured hybrid substrates stimulated the initial adhesion events of the osteoblastic cells, including cell adhesion rate, spreading behaviors, and expression of adhesive proteins. The nanostructured hybrid interfaces significantly improved the adsorption of protein molecules, which was enabled by the surface charge interaction, and increased surface area of the nanotopology. Furthermore, the incorporated protein was released at a highly sustained rate, profiling a diffusion-controlled pattern over a couple of weeks, suggesting the possible usefulness as a protein delivery device. Collectively, the nanostructured hybrid CNT-Chi layer, implemented by an electrodeposition, is considered a biocompatible, cell-stimulating, and protein-delivering biointerface of metallic implants.
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Affiliation(s)
- Kapil D Patel
- Institute of Tissue Regeneration Engineering (ITREN), ‡Department of Nanobiomedical Science & BK21 PLUS NBM Global Research Center for Regenerative Medicine, and §Department of Biomaterials Science, College of Dentistry, Dankook University , Cheonan 330-714, South Korea
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15
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Ketabchi A, Weck A, Variola F. Influence of oxidative nanopatterning and anodization on the fatigue resistance of commercially pure titanium and Ti–6Al–4V. J Biomed Mater Res B Appl Biomater 2014; 103:563-71. [DOI: 10.1002/jbm.b.33227] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2013] [Revised: 03/31/2014] [Accepted: 05/22/2014] [Indexed: 11/08/2022]
Affiliation(s)
- Amirhossein Ketabchi
- Department of Mechanical EngineeringUniversity of OttawaOttawa Ontario CanadaK1N 6N5
| | - Arnaud Weck
- Department of Mechanical EngineeringUniversity of OttawaOttawa Ontario CanadaK1N 6N5
- Department of PhysicsUniversity of OttawaOttawa Ontario CanadaK1N 6N5
| | - Fabio Variola
- Department of Mechanical EngineeringUniversity of OttawaOttawa Ontario CanadaK1N 6N5
- Department of PhysicsUniversity of OttawaOttawa Ontario CanadaK1N 6N5
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16
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Variola F, Zalzal SF, Leduc A, Barbeau J, Nanci A. Oxidative nanopatterning of titanium generates mesoporous surfaces with antimicrobial properties. Int J Nanomedicine 2014; 9:2319-25. [PMID: 24872694 PMCID: PMC4026557 DOI: 10.2147/ijn.s61333] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Mesoporous surfaces generated by oxidative nanopatterning have the capacity to selectively regulate cell behavior, but their impact on microorganisms has not yet been explored. The main objective of this study was to test the effects of such surfaces on the adherence of two common bacteria and one yeast strain that are responsible for nosocomial infections in clinical settings and biomedical applications. In addition, because surface characteristics are known to affect bacterial adhesion, we further characterized the physicochemical properties of the mesoporous surfaces. Focused ion beam (FIB) was used to generate ultrathin sections for elemental analysis by energy-dispersive X-ray spectroscopy (EDS), nanobeam electron diffraction (NBED), and high-angle annular dark field (HAADF) scanning transmission electron microscopy (STEM) imaging. The adherence of Staphylococcus aureus, Escherichia coli and Candida albicans onto titanium disks with mesoporous and polished surfaces was compared. Disks with the two surfaces side-by-side were also used for direct visual comparison. Qualitative and quantitative results from this study indicate that bacterial adhesion is significantly hindered by the mesoporous surface. In addition, we provide evidence that it alters structural parameters of C. albicans that determine its invasiveness potential, suggesting that microorganisms can sense and respond to the mesoporous surface. Our findings demonstrate the efficiency of a simple chemical oxidative treatment in generating nanotextured surfaces with antimicrobial capacity with potential applications in the implant manufacturing industry and hospital setting.
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Affiliation(s)
- Fabio Variola
- Faculty of Engineering, Department of Mechanical Engineering, Ottawa, ON, Canada ; Faculty of Science, Department of Physics, University of Ottawa, Ottawa, ON, Canada
| | | | - Annie Leduc
- Faculty of Dental Medicine, Université de Montréal, Montreal, QC, Canada
| | - Jean Barbeau
- Faculty of Dental Medicine, Université de Montréal, Montreal, QC, Canada
| | - Antonio Nanci
- Faculty of Dental Medicine, Université de Montréal, Montreal, QC, Canada
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