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Makurat-Kasprolewicz B, Wekwejt M, Ronowska A, Gajowiec G, Grodzicka M, Dzionk S, Ossowska A. Influence of Ultrasound on the Characteristics of CaP Coatings Generated Via the Micro-arc Oxidation Process in Relation to Biomedical Engineering. ACS Biomater Sci Eng 2024; 10:2100-2115. [PMID: 38502729 PMCID: PMC11005015 DOI: 10.1021/acsbiomaterials.3c01433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2023] [Revised: 01/10/2024] [Accepted: 03/08/2024] [Indexed: 03/21/2024]
Abstract
Over the past decade, bone tissue engineering has been at the core of attention because of an increasing number of implant surgeries. The purpose of this study was to obtain coatings on titanium (Ti) implants with improved properties in terms of biomedical applications and to investigate the effect of ultrasound (US) on these properties during the micro-arc oxidation (MAO) process. The influence of various process parameters, such as time and current density, as well as US mode, on the properties of such coatings was evaluated. Novel porous calcium-phosphate-based coatings were obtained on commercially pure Ti. Their microstructure, chemical composition, topography, wettability, nanomechanical properties, thickness, adhesion to the substrate, and corrosion resistance were analyzed. In addition, cytocompatibility evaluation was checked with the human osteoblasts. The properties of the coatings varied significantly, depending on applied process parameters. The US application during the MAO process contributes to the increase of coating thickness, porosity, roughness, and skewness, as well as augmented calcium incorporation. The most advantageous coating was obtained at a current of 136 mA, time 450 s, and unipolar rectangular US, as it exhibits high porosity, adequate wettability, and beneficial skewness, which enabled increased adhesion and proliferation of osteoblasts during in vitro studies. Finally, the conducted research demonstrated the influence of various UMAO process parameters, which allowed for the selection of appropriate Ti implant modification for specific biomedical utilization.
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Affiliation(s)
| | - Marcin Wekwejt
- Department
of Biomaterials Technology, Gdansk University
of Technology, 80-233 Gdańsk, Poland
| | - Anna Ronowska
- Department
of Laboratory Medicine, Medical University
of Gdańsk, 80-210 Gdańsk, Poland
| | - Grzegorz Gajowiec
- Department
of Materials Science and Technology, Gdansk
University of Technology, 80-233 Gdańsk, Poland
| | - Marlena Grodzicka
- Faculty
of Chemistry, Nicolaus Copernicus University
in Toruń, 87-100 Toruń, Poland
| | - Stefan Dzionk
- Department
of Manufacturing and Production Engineering, Gdansk University of Technology, 80-233 Gdańsk, Poland
| | - Agnieszka Ossowska
- Department
of Materials Science and Technology, Gdansk
University of Technology, 80-233 Gdańsk, Poland
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Eom YS, Park JH, Kim TH. Recent Advances in Stem Cell Differentiation Control Using Drug Delivery Systems Based on Porous Functional Materials. J Funct Biomater 2023; 14:483. [PMID: 37754897 PMCID: PMC10532449 DOI: 10.3390/jfb14090483] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 09/14/2023] [Accepted: 09/18/2023] [Indexed: 09/28/2023] Open
Abstract
The unique characteristics of stem cells, which include self-renewal and differentiation into specific cell types, have paved the way for the development of various biomedical applications such as stem cell therapy, disease modelling, and drug screening. The establishment of effective stem cell differentiation techniques is essential for the effective application of stem cells for various purposes. Ongoing research has sought to induce stem cell differentiation using diverse differentiation factors, including chemicals, proteins, and integrin expression. These differentiation factors play a pivotal role in a variety of applications. However, it is equally essential to acknowledge the potential hazards of uncontrolled differentiation. For example, uncontrolled differentiation can give rise to undesirable consequences, including cancerous mutations and stem cell death. Therefore, the development of innovative methods to control stem cell differentiation is crucial. In this review, we discuss recent research cases that have effectively utilised porous functional material-based drug delivery systems to regulate stem cell differentiation. Due to their unique substrate properties, drug delivery systems based on porous functional materials effectively induce stem cell differentiation through the steady release of differentiation factors. These ground-breaking techniques hold considerable promise for guiding and controlling the fate of stem cells for a wide range of biomedical applications, including stem cell therapy, disease modelling, and drug screening.
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Affiliation(s)
| | | | - Tae-Hyung Kim
- School of Integrative Engineering, Chung-Ang University, 84 Heukseuk-ro, Dongjak-gu, Seoul 06974, Republic of Korea; (Y.-S.E.); (J.-H.P.)
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Zhao Q, Wu J, Zhang S, Ni X, Wang B, Lu K, Zhang P, Xu R. Preparation and properties of composite manganese/fluorine coatings on metallic titanium. RSC Adv 2023; 13:14863-14877. [PMID: 37197179 PMCID: PMC10184752 DOI: 10.1039/d3ra01632c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Accepted: 05/09/2023] [Indexed: 05/19/2023] Open
Abstract
Titanium is widely used in implants because of its good mechanical properties and biocompatibility. However, titanium has no biological activity and is prone to causing implant failure after implantation. In this study, we prepared a manganese- and fluorine-doped titanium dioxide coating on a titanium surface by microarc oxidation technology. The surface characteristics of the coating were evaluated by field emission scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, and atomic force microscopy and profiler, and the corrosion resistance and wear resistance of the coating were also evaluated. The bioactivity of the coating on bone marrow mesenchymal stem cells was evaluated by in vitro cell experiments, and the antibacterial properties of the coating were evaluated by in vitro bacterial experiments. The results confirmed that the manganese- and fluorine-doped titanium dioxide coating was successfully prepared on the titanium surface, and manganese and fluorine were successfully introduced into the coating. The doping of manganese and fluorine did not change the surface morphology of the coating, and the coating had good corrosion resistance and wear resistance. The results of the in vitro cell experiment showed that the titanium dioxide coating with manganese and fluoride could promote the proliferation, differentiation and mineralization of bone marrow mesenchymal stem cells. The results of the bacterial experiment in vitro showed that the coating material could inhibit the propagation of Staphylococcus aureus and had a good antibacterial effect. Conclusion: it is feasible to prepare a manganese- and fluorine-doped titanium dioxide coating on titanium surfaces by microarc oxidation. The coating not only has good surface characteristics but also has good bone-promoting and antibacterial properties and has potential for clinical application.
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Affiliation(s)
- Quanming Zhao
- Department of Orthopaedics, Guizhou Provincial People's Hospital Guiyang 550002 Guizhou China
| | - Jieshi Wu
- Department of Orthopaedics, Affiliated Hospital of Jiangnan University Wuxi 214000 Jiangsu China
| | - Sujiajun Zhang
- Department of Orthopaedics, Affiliated Hospital of Jiangnan University Wuxi 214000 Jiangsu China
| | - Xiaohui Ni
- Department of Orthopedics, Dafeng People's Hospital Yancheng Jiangsu 224100 China
| | - Bo Wang
- Department of Orthopaedics, Guizhou Provincial People's Hospital Guiyang 550002 Guizhou China
| | - Kaihang Lu
- Department of Orthopaedics, Guizhou Provincial People's Hospital Guiyang 550002 Guizhou China
| | - Pengpeng Zhang
- Department of Orthopaedics, Guizhou Provincial People's Hospital Guiyang 550002 Guizhou China
| | - Ruisheng Xu
- Department of Orthopaedics, Affiliated Hospital of Jiangnan University Wuxi 214000 Jiangsu China
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Wang LJ, Ni XH, Zhang F, Peng Z, Yu FX, Zhang LB, Li B, Jiao Y, Li YK, Yang B, Zhu XY, Zhao QM. Osteoblast Response to Copper-Doped Microporous Coatings on Titanium for Improved Bone Integration. NANOSCALE RESEARCH LETTERS 2021; 16:146. [PMID: 34542720 PMCID: PMC8452820 DOI: 10.1186/s11671-021-03602-2] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Accepted: 09/04/2021] [Indexed: 05/28/2023]
Abstract
Due to their excellent mechanical properties and good biocompatibility, titanium alloys have become a popular research topic in the field of medical metal implants. However, the surface of the titanium alloy does not exhibit biological activity, which may cause poor integration between the interface of the titanium implant and the interface of the bone tissue and subsequently may cause the implant to fall off. Therefore, surface biological inertness is one of the problems that titanium alloys must overcome to become an ideal orthopedic implant material. Surface modification can improve the biological properties of titanium, thereby enhancing its osseointegration effect. Copper is an essential trace element for the human body, can promote bone formation and plays an important role in maintaining the physiological structure and function of bone and bone growth and development. In this study, a microporous copper-titanium dioxide coating was prepared on the surface of titanium by microarc oxidation. Based on the evaluation of its surface characteristics, the adhesion, proliferation and differentiation of MC3T3-E1 cells were observed. A titanium rod was implanted into the rabbit femoral condyle, and the integration of the coating and bone tissue was evaluated. Our research results show that the microporous copper-titanium dioxide coating has a nearly three-dimensional porous structure, and copper is incorporated into the coating without changing the structure of the coating. In vitro experiments found that the coating can promote the adhesion, proliferation and differentiation of MC3T3-E1 cells. In vivo experiments further confirmed that the titanium copper-titanium dioxide microporous coating can promote the osseointegration of titanium implants. In conclusion, copper-titanium dioxide microporous coatings can be prepared by microarc oxidation, which can improve the biological activity and biocompatibility of titanium, promote new bone formation and demonstrate good osteoinductive properties. Therefore, the use of this coating in orthopedics has potential clinical application.
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Affiliation(s)
- Lai-Jie Wang
- Department of Orthopedics, Huai'an People's Hospital of Hongze District, Huai'an, 223100, Jiangsu, China
| | - Xiao-Hui Ni
- Department of Orthopedics, Dafeng People's Hospital, Yancheng, 224100, Jiangsu, China
| | - Fei Zhang
- Department of Orthopedics, Huai'an People's Hospital of Hongze District, Huai'an, 223100, Jiangsu, China
| | - Zhi Peng
- Department of Orthopaedics, Guizhou Provincial People's Hospital, Guiyang, 550002, Guizhou, China
| | - Fu-Xun Yu
- Department of Orthopaedics, Guizhou Provincial People's Hospital, Guiyang, 550002, Guizhou, China
| | - Lei-Bing Zhang
- Department of Orthopaedics, Guizhou Provincial People's Hospital, Guiyang, 550002, Guizhou, China
| | - Bo Li
- Department of Orthopaedics, Guizhou Provincial People's Hospital, Guiyang, 550002, Guizhou, China
| | - Yang Jiao
- Department of Orthopedics, Dafeng People's Hospital, Yancheng, 224100, Jiangsu, China
| | - Yan-Kun Li
- Department of Orthopaedics, Guizhou Provincial People's Hospital, Guiyang, 550002, Guizhou, China
| | - Bing Yang
- Department of Orthopedics, Dafeng People's Hospital, Yancheng, 224100, Jiangsu, China
| | - Xing-Yuan Zhu
- Department of Orthopedics, Dafeng People's Hospital, Yancheng, 224100, Jiangsu, China
| | - Quan-Ming Zhao
- Department of Orthopaedics, Guizhou Provincial People's Hospital, Guiyang, 550002, Guizhou, China.
- Department of Orthopedics, Dafeng People's Hospital, Yancheng, 224100, Jiangsu, China.
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Zhao X, You L, Wang T, Zhang X, Li Z, Ding L, Li J, Xiao C, Han F, Li B. Enhanced Osseointegration of Titanium Implants by Surface Modification with Silicon-doped Titania Nanotubes. Int J Nanomedicine 2020; 15:8583-8594. [PMID: 33173295 PMCID: PMC7648569 DOI: 10.2147/ijn.s270311] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Accepted: 09/15/2020] [Indexed: 12/18/2022] Open
Abstract
Introduction Despite great progress made in developing orthopedic implants, the development of titanium (Ti) implants with ideal early osseointegration remains a big challenge. Our pilot study has demonstrated that Si-TiO2 nanotubes on the surface of Ti substrates could enhance their osteogenic activity. Hence, in this study, we aim to comprehensively evaluate the effects of silicon-doped titania (Si-TiO2) nanotubes on the osseointegration property of Ti implants. Materials and Methods The Ti implants were surface modified with Si-TiO2 nanotubes through in situ anodization and Si plasma immersion ion implantation (PIII) method. Three groups were divided as Ti implants (Ti), Ti modified with TiO2 nanotubes (TiO2-NTs) and Ti modified with Si-TiO2 nanotubes (Si-TiO2-NTs). The morphology of Si-TiO2 nanotubes was observed by scanning electron microscope. The growth and osteogenic differentiation of MC3T3-E1 cells on the Ti implants were evaluated. Further, the pull-out tests and in vivo osseointegration ability evaluation were performed after implanting the screws in the femur of Sprague Dawley rats. Results The Si-TiO2 nanotubes could be seen on the surface of Ti implants. The MC3T3-E1 cells could grow on the surface of Ti, TiO2-NTs and Si-TiO2-NTs, and showed fast proliferation rate on the Si-TiO2-NTs. Moreover, the production of some osteogenesis-related proteins (ALP and Runx2) at one week and calcium deposition at four week was also enhanced in Si-TiO2-NTs rather than other groups. In vivo osseointegration results showed that Si-TiO2 nanotube-modified Ti screws had higher pullout force at two and four weeks as well as enhanced new bone formation at six weeks compared to bare Ti screws and Ti screws modified with TiO2 nanotubes alone. Discussion The modification of Si-TiO2-NTs on the Ti substrate could generate a nanostructured and hydrophilic surface, which can promote cell growth. Moreover, the existence of the TiO2 nanotubes and Si element also can improve the in vitro osteogenic differentiation of MC3T3-E1 cells and early bone formation around the implanted screws. Together, findings from this study show that surface modification of Ti implants with Si-TiO2 nanotubes could enhance early osseointegration and therefore has the potential for clinical applications.
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Affiliation(s)
- Xijiang Zhao
- Department of Orthopedics, The Affiliated Hospital of Jiangnan University, Wuxi, Jiangsu 214062, People's Republic of China
| | - Linna You
- Department of Orthopedics, The Affiliated Hospital of Jiangnan University, Wuxi, Jiangsu 214062, People's Republic of China
| | - Tao Wang
- Department of Orthopedics, The Affiliated Hospital of Jiangnan University, Wuxi, Jiangsu 214062, People's Republic of China
| | - Xianjun Zhang
- Department of Orthopedics, The Affiliated Hospital of Jiangnan University, Wuxi, Jiangsu 214062, People's Republic of China
| | - Zexi Li
- Departments of Orthopaedic Surgery and Stomatology, The First Affiliated Hospital, Orthopaedic Institute, Soochow University, Suzhou, Jiangsu 215006, People's Republic of China
| | - Luguang Ding
- Departments of Orthopaedic Surgery and Stomatology, The First Affiliated Hospital, Orthopaedic Institute, Soochow University, Suzhou, Jiangsu 215006, People's Republic of China
| | - Jiaying Li
- Departments of Orthopaedic Surgery and Stomatology, The First Affiliated Hospital, Orthopaedic Institute, Soochow University, Suzhou, Jiangsu 215006, People's Republic of China
| | - Can Xiao
- Departments of Orthopaedic Surgery and Stomatology, The First Affiliated Hospital, Orthopaedic Institute, Soochow University, Suzhou, Jiangsu 215006, People's Republic of China
| | - Fengxuan Han
- Departments of Orthopaedic Surgery and Stomatology, The First Affiliated Hospital, Orthopaedic Institute, Soochow University, Suzhou, Jiangsu 215006, People's Republic of China
| | - Bin Li
- Departments of Orthopaedic Surgery and Stomatology, The First Affiliated Hospital, Orthopaedic Institute, Soochow University, Suzhou, Jiangsu 215006, People's Republic of China
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6
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Zhao QM, Li XK, Guo S, Wang N, Liu WW, Shi L, Guo Z. Osteogenic activity of a titanium surface modified with silicon-doped titanium dioxide. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 110:110682. [PMID: 32204111 DOI: 10.1016/j.msec.2020.110682] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Revised: 11/30/2019] [Accepted: 01/19/2020] [Indexed: 01/17/2023]
Abstract
Titanium and its alloys are the most widely used implants in clinical practice. However, their bioactivity is unsatisfactory, and the effect of osteogenesis on the bonding interface between the implant and bone needs to be further improved. In this study, a coating consisting of microporous titanium doped with silicon (Si-TiO2) was successfully created by microarc oxidation (MAO), and Si was evenly distributed on the surface of the coating. The surface morphology, roughness, and phase composition of the Si-TiO2 microporous coating were similar to those of the Si-free doped MAO coatings. The Si-TiO2 microporous coating can promote osteoblast adhesion, spreading, proliferation and differentiation. More importantly, the integrin β1-FAK signaling pathway may be involved in the regulatory effect of the coating on osteoblasts. Further studies in vivo indicated that the Si-TiO2 microporous coating could improve early stage osseointegration. In conclusion, the Si-TiO2 microporous coating is a feasible way to improve the osteogenic abilities of Ti implants to potentially promote clinical performance.
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Affiliation(s)
- Quan-Ming Zhao
- Department of Orthopedics, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710032, China
| | - Xiao-Kang Li
- Department of Orthopedics, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710032, China
| | - Shuo Guo
- Department of Orthopedics, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710032, China
| | - Ning Wang
- Department of Orthopedics, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710032, China
| | - Wen-Wen Liu
- Department of Orthopedics, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710032, China
| | - Lei Shi
- Department of Orthopedics, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710032, China
| | - Zheng Guo
- Department of Orthopedics, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710032, China.
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Xu L, Li J, Xu X, Lei X, Zhang K, Wu C, Zhang Z, Shi X, Wang X, Ding J. A Novel Cytocompatibility Strengthening Strategy of Ultrafine-Grained Pure Titanium. ACS APPLIED MATERIALS & INTERFACES 2019; 11:47680-47694. [PMID: 31789503 DOI: 10.1021/acsami.9b13554] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Ultrafine-grained pure (UFG) titanium processed by equal channel angular pressing possesses mechanical properties comparable to those of Ti-6Al-4V and features more favorable friction resistance, biocompatibility, and corrosion resistance than does commercially pure (CP) titanium. Nevertheless, UFG titanium is still a bio-inert material with a lack of bone-inducing ability. Here, TiO2-hydroxyapatite (TiO2-HA) coatings were fabricated on CP titanium and UFG titanium through combining micro-arc oxidation and hydrothermal treatment together to improve their cytocompatibility. The results indicate that, compared with conventional coatings that use CP titanium as the substrate, such coatings formed on the UFG titanium possess additional hydrophilicity and in vitro cytocompatibility. The fantastic hierarchical structure of the UFG TiO2-HA coating (UG-MH coating), including microscale and nanoscale pores and short column-shaped and sheet-shaped HA grains with varying geometric shapes, excellent hydrophilicity, and high polar force, enhances the mutual effects between the osteoblasts and titanium implant since it provides an adequate microenvironment for the ingrowth of osteoblasts, inducing osteoblast adhesion, proliferation, and differentiation. The UG-MH coating has a synergistic effect due to its fantastic hydrophilic hierarchical structure and high polar force on the up-regulated expression of cytoskeletal actin proteins as well as osteocalcin, protein kinase C (PKC), nuclear factor of activated T-cells (NFAT), and Wnt5, enabling osteoblasts to differentiate via the Wnt calcium-dependent signaling pathway. This study highlights the idea that the modified UFG titanium will be more suitable than CP titanium in dental and orthopedic applications.
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Affiliation(s)
| | | | | | | | | | | | | | - Xingling Shi
- School of Materials Science and Engineering , Jiangsu University of Science and Technology , Zhenjiang 212003 , China
| | | | - Jianning Ding
- Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering , Changzhou University , Changzhou 213164 , China
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8
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Zhao QM, Sun YY, Wu CS, Yang J, Bao GF, Cui ZM. Enhanced osteogenic activity and antibacterial ability of manganese–titanium dioxide microporous coating on titanium surfaces. Nanotoxicology 2019; 14:289-309. [PMID: 32193966 DOI: 10.1080/17435390.2019.1690065] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Quan-Ming Zhao
- Department of Orthopaedic Surgery, The Second Affiliated Hospital of Nantong University, Nantong, PR China
| | - Yu-Yu Sun
- Department of Orthopaedic Surgery, The Second Affiliated Hospital of Nantong University, Nantong, PR China
| | - Chun-Shuai Wu
- Department of Orthopaedic Surgery, The Second Affiliated Hospital of Nantong University, Nantong, PR China
| | - Jian Yang
- Department of Orthopaedic Surgery, The Second Affiliated Hospital of Nantong University, Nantong, PR China
| | - Guo-Feng Bao
- Department of Orthopaedic Surgery, The Second Affiliated Hospital of Nantong University, Nantong, PR China
| | - Zhi-Ming Cui
- Department of Orthopaedic Surgery, The Second Affiliated Hospital of Nantong University, Nantong, PR China
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Santos-Coquillat A, Esteban-Lucia M, Martinez-Campos E, Mohedano M, Arrabal R, Blawert C, Zheludkevich M, Matykina E. PEO coatings design for Mg-Ca alloy for cardiovascular stent and bone regeneration applications. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 105:110026. [DOI: 10.1016/j.msec.2019.110026] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Revised: 06/19/2019] [Accepted: 07/26/2019] [Indexed: 02/03/2023]
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10
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Characterization, Bioactivity and Antibacterial Properties of Copper-Based TiO2 Bioceramic Coatings Fabricated on Titanium. COATINGS 2018. [DOI: 10.3390/coatings9010001] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The bioactive and anti-bacterial Cu-based bioceramic TiO2 coatings have been fabricated on cp-Ti (Grade 2) by two-steps. These two-steps combine micro-arc oxidation (MAO) and physical vapor deposition–thermal evaporation (PVD-TE) techniques for dental implant applications. As a first step, all surfaces of cp-Ti substrate were coated by MAO technique in an alkaline electrolyte, consisting of Na3PO4 and KOH in de-ionized water. Then, as a second step, a copper (Cu) nano-layer with 5 nm thickness was deposited on the MAO by PVD-TE technique. Phase structure, morphology, elemental amounts, thickness, roughness and wettability of the MAO and Cu-based MAO coating surfaces were characterized by XRD (powder- and TF-XRD), SEM, EDS, eddy current device, surface profilometer and contact angle goniometer, respectively. The powder- and TF-XRD spectral analyses showed that Ti, TiO2, anatase-TiO2 and rutile-TiO2 existed on the MAO and Cu-based MAO coatings’ surfaces. All coatings’ surfaces were porous and rough, owing to the presence of micro sparks through MAO. Furthermore, the surface morphology of Cu-based MAO was not changed. Also, the Cu-based MAO coating has more hydrophilic properties than the MAO coating. In vitro bioactivity and in vitro antibacterial properties of the coatings have been investigated by immersion in simulated body fluid (SBF) at 36.5 °C for 28 days and bacterial adhesion for gram-positive (S. aureus) and gram-negative (E. coli) bacteria, respectively. The apatite layer was formed on the MAO and Cu-based MAO surfaces at post-immersion in SBF and therefore, the bioactivity of Cu-based MAO surface was increased to the MAO surface. Also, for S. aureus and E. coli, the antibacterial properties of Cu-based MAO coatings were significantly improved compared to one of the uncoated MAO surfaces. These results suggested that Cu-based MAO coatings on cp-Ti could be a promising candidate for biomedical dental implant applications.
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11
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TiO2 and its composites as promising biomaterials: a review. Biometals 2018; 31:147-159. [DOI: 10.1007/s10534-018-0078-6] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Accepted: 01/26/2018] [Indexed: 01/04/2023]
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12
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Ding Z, Qiao Y, Peng F, Xia C, Qian S, Wang T, Sun J, Liu X. Si-doped porous TiO2 coatings enhanced in vitro angiogenic behavior of human umbilical vein endothelial cells. Colloids Surf B Biointerfaces 2017; 159:493-500. [DOI: 10.1016/j.colsurfb.2017.08.010] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2017] [Revised: 07/30/2017] [Accepted: 08/03/2017] [Indexed: 01/16/2023]
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13
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Peng F, Wang D, Tian Y, Cao H, Qiao Y, Liu X. Sealing the Pores of PEO Coating with Mg-Al Layered Double Hydroxide: Enhanced Corrosion Resistance, Cytocompatibility and Drug Delivery Ability. Sci Rep 2017; 7:8167. [PMID: 28811545 PMCID: PMC5557750 DOI: 10.1038/s41598-017-08238-w] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Accepted: 07/10/2017] [Indexed: 11/21/2022] Open
Abstract
In recent years, magnesium (Mg) alloys show a promising application in clinic as degradable biomaterials. Nevertheless, the poor corrosion resistance of Mg alloys is the main obstacle to their clinical application. Here we successfully seal the pores of plasma electrolytic oxidation (PEO) coating on AZ31 with Mg-Al layered double hydroxide (LDH) via hydrothermal treatment. PEO/LDH composite coating possess a two layer structure, an inner layer made up of PEO coating (~5 μm) and an outer layer of Mg-Al LDH (~2 μm). Electrochemical and hydrogen evolution tests suggest preferable corrosion resistance of the PEO/LDH coating. Cytotoxicity, cell adhesion, live/dead staining and proliferation data of rat bone marrow stem cells (rBMSCs) demonstrate that PEO/LDH coating remarkably enhance the cytocompatibility of the substrate, indicating a potential application in orthopedic surgeries. In addition, hemolysis rate (HR) test shows that the HR value of PEO/LDH coating is 1.10 ± 0.47%, fulfilling the request of clinical application. More importantly, the structure of Mg-Al LDH on the top of PEO coating shows excellent drug delivery ability.
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Affiliation(s)
- Feng Peng
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Donghui Wang
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yaxin Tian
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Huiliang Cao
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China
| | - Yuqin Qiao
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China
| | - Xuanyong Liu
- 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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Tian P, Peng F, Wang D, Liu X. Corrosion behavior and cytocompatibility of fluoride-incorporated plasma electrolytic oxidation coating on biodegradable AZ31 alloy. Regen Biomater 2017; 4:1-10. [PMID: 28149524 PMCID: PMC5274704 DOI: 10.1093/rb/rbw036] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2016] [Revised: 08/28/2016] [Accepted: 09/01/2016] [Indexed: 12/23/2022] Open
Abstract
Fluoride-incorporated plasma electrolytic oxidation (PEO) coating was fabricated on biodegradable AZ31 alloy. The surface morphologies and phases were investigated by scanning electron microscopy and X-ray diffraction. The effect of fluoride incorporation in coatings on corrosion behaviour was investigated in simulated body fluid and in vitro cytocompatibility of the coatings was also studied by evaluating cytotoxicity, adhesion, proliferation and live-dead stain of osteoblast cells (MC3T3-E1). Furthermore, the corrosion morphologies in vivo were examined. The results showed that the fluoride could be incorporated into the coating to form MgF2 phase. In vitro and in vivo degradation tests revealed that the corrosion resistance of the coating could be improved by the incorporation of fluoride, which may attribute to the chemical stability of MgF2 phase. Moreover, good cytocompatibility of fluoride-incorporated coating was confirmed with no obvious cytotoxicity, enhanced cell adhesion and proliferation. However, when the fluoride content was high, a slight inhibition of cell growth was observed. The results indicate that although fluoride incorporation can enhance the corrosion resistance of the coatings, thus resulting a more suitable environment for cells, the high content of fluoride in the coating also kill cells ascribed to the high released of fluorine. If the content of fluoride is well controlled, the PEO coating with MgF2 phase is a promising surface modification of Mg alloys.
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Affiliation(s)
- Peng Tian
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, P.R. China
| | - Feng Peng
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, P.R. China
| | - Donghui Wang
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, P.R. China
| | - Xuanyong Liu
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, P.R. China
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15
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Xu G, Shen X, Dai L, Ran Q, Ma P, Cai K. Reduced bacteria adhesion on octenidine loaded mesoporous silica nanoparticles coating on titanium substrates. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 70:386-395. [DOI: 10.1016/j.msec.2016.08.050] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2016] [Revised: 08/09/2016] [Accepted: 08/20/2016] [Indexed: 02/06/2023]
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16
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Gao J, Wang M, Shi C, Wang L, Wang D, Zhu Y. Synthesis of trace element Si and Sr codoping hydroxyapatite with non-cytotoxicity and enhanced cell proliferation and differentiation. Biol Trace Elem Res 2016; 174:208-217. [PMID: 27075548 DOI: 10.1007/s12011-016-0697-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/11/2015] [Accepted: 03/31/2016] [Indexed: 10/22/2022]
Abstract
The main inorganic minerals in natural bones are non-stoichiometric hydroxyapatite (HA, Ca10[PO4]6[OH]2) doped with various trace elements, which may possess important biochemical effects. To investigate the functions of Sr and Si elements in human hard tissues, non-doped HA, trace Si doped HA, Si and Sr codoped HA with the concentration of natural bones are synthesized by hydrothermal method in this study. The samples are characterized by powder X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and scanning electron microscope (SEM). The biological activities are evaluated via cytotoxicity study, adhesion and proliferation of osteoblast measurement, and alkaline phosphatase (ALP) assay. All the synthesized materials are HA phase, which have hierarchical structures with oriented HA nanorods assembled into the platy particles. These materials are non-cytotoxic against L929 cells line even at 400 μg/ml powder suspension. The results clearly indicate that the proliferation of L929 cells increases with trace elements doping from trace Si-HA to Si + Sr-HA. The adhesion and proliferation of osteoblast measurement illustrates that proliferation of osteoblasts advances about 1.3 times for Si-HA and about 1.8 times for Si + Sr-HA compared with undoped HA. In general, Si-HA with trace Si element shows enhanced cell differentiation, and Si + Sr-HA dual-doped with Si and Sr elements presents increased biological activity compared with Si-HA.
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Affiliation(s)
- Jianyong Gao
- Changhai Hospital of Shanghai, Second Military Medical University, Shanghai, 200082, China
| | - Ming Wang
- Key Lab of Inorganic Coating Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China
| | - Chao Shi
- Key Lab of Inorganic Coating Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China
| | - Liping Wang
- Key Lab of Inorganic Coating Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China
| | - Dalin Wang
- Changhai Hospital of Shanghai, Second Military Medical University, Shanghai, 200082, China
| | - Yingchun Zhu
- Key Lab of Inorganic Coating Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China.
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17
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Marques IDS, Alfaro MF, Cruz NCD, Mesquita MF, Takoudis C, Sukotjo C, Mathew MT, Barão VAR. Tribocorrosion behavior of biofunctional titanium oxide films produced by micro-arc oxidation: Synergism and mechanisms. J Mech Behav Biomed Mater 2016; 60:8-21. [DOI: 10.1016/j.jmbbm.2015.12.030] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2015] [Revised: 12/10/2015] [Accepted: 12/21/2015] [Indexed: 11/15/2022]
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18
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Silicon-Doped Titanium Dioxide Nanotubes Promoted Bone Formation on Titanium Implants. Int J Mol Sci 2016; 17:292. [PMID: 26927080 PMCID: PMC4813156 DOI: 10.3390/ijms17030292] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2016] [Revised: 02/14/2016] [Accepted: 02/15/2016] [Indexed: 11/19/2022] Open
Abstract
While titanium (Ti) implants have been extensively used in orthopaedic and dental applications, the intrinsic bioinertness of untreated Ti surface usually results in insufficient osseointegration irrespective of the excellent biocompatibility and mechanical properties of it. In this study, we prepared surface modified Ti substrates in which silicon (Si) was doped into the titanium dioxide (TiO2) nanotubes on Ti surface using plasma immersion ion implantation (PIII) technology. Compared to TiO2 nanotubes and Ti alone, Si-doped TiO2 nanotubes significantly enhanced the expression of genes related to osteogenic differentiation, including Col-I, ALP, Runx2, OCN, and OPN, in mouse pre-osteoblastic MC3T3-E1 cells and deposition of mineral matrix. In vivo, the pull-out mechanical tests after two weeks of implantation in rat femur showed that Si-doped TiO2 nanotubes improved implant fixation strength by 18% and 54% compared to TiO2-NT and Ti implants, respectively. Together, findings from this study indicate that Si-doped TiO2 nanotubes promoted the osteogenic differentiation of osteoblastic cells and improved bone-Ti integration. Therefore, they may have considerable potential for the bioactive surface modification of Ti implants.
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19
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Incorporation of Ca, P, and Si on bioactive coatings produced by plasma electrolytic oxidation: The role of electrolyte concentration and treatment duration. Biointerphases 2015; 10:041002. [DOI: 10.1116/1.4932579] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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20
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Marques IDSV, Barão VAR, da Cruz NC, Yuan JCC, Mesquita MF, Ricomini-Filho AP, Sukotjo C, Mathew MT. Electrochemical behavior of bioactive coatings on cp-Ti surface for dental application. CORROSION SCIENCE 2015; 100:133-146. [PMID: 26834277 PMCID: PMC4730887 DOI: 10.1016/j.corsci.2015.07.019] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The surface characteristics and electrochemical properties of bioactive coatings produced by plasma electrolytic oxidation (PEO) with calcium, phosphorous, silicon and silver on commercially pure titanium were evaluated. PEO treatment produced a porous oxide layer, which improved the surface topography, and enriched the surface chemistry with bioactive elements, responsible for mimicking bone surface. The surfaces with higher calcium concentration presented antibacterial and biocompability properties with better responses for corrosion and barrier properties, due to the presence of rutile crystalline structure. PEO may be a promising surface treatment option to improve the electrochemical behavior of dental implants mitigating treatment failures.
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Affiliation(s)
- Isabella da Silva Vieira Marques
- Department of Prosthodontics and Periodontology, Piracicaba Dental School, University of Campinas (UNICAMP), Av Limeira, 901, Piracicaba, São Paulo, Brazil, 13414-903
| | - Valentim Adelino Ricardo Barão
- Department of Prosthodontics and Periodontology, Piracicaba Dental School, University of Campinas (UNICAMP), Av Limeira, 901, Piracicaba, São Paulo, Brazil, 13414-903
| | - Nilson Cristino da Cruz
- Laboratory of Technological Plasmas, Engineering College, Univ Estadual Paulista (UNESP), Av Três de Março, 511, Sorocaba, São Paulo, Brazil, 18087-180
| | - Judy Chia-Chun Yuan
- Department of Restorative Dentistry, University of Illinois at Chicago, College of Dentistry, 801 S Paulina, Chicago, Illinois, USA, 60612
| | - Marcelo Ferraz Mesquita
- Department of Prosthodontics and Periodontology, Piracicaba Dental School, University of Campinas (UNICAMP), Av Limeira, 901, Piracicaba, São Paulo, Brazil, 13414-903
| | - Antonio Pedro Ricomini-Filho
- Department of Physiological Science, Piracicaba Dental School, University of Campinas (UNICAMP), Av Limeira, 901, Piracicaba, São Paulo, Brazil, 13414-903
| | - Cortino Sukotjo
- Department of Restorative Dentistry, University of Illinois at Chicago, College of Dentistry, 801 S Paulina, Chicago, Illinois, USA, 60612
| | - Mathew T. Mathew
- Department of Orthopedic Surgery, Rush University Medical Center, 1611 W Harrison, Chicago, Illinois, USA, 60612
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21
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Shin KR, Kim YS, Kim GW, Ko YG, Shin DH. Development of titanium oxide layer containing nanocrystalline zirconia particles with tetragonal structure: Structural and biological characteristics. Colloids Surf B Biointerfaces 2015; 131:47-53. [DOI: 10.1016/j.colsurfb.2015.03.047] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2014] [Revised: 03/19/2015] [Accepted: 03/20/2015] [Indexed: 02/04/2023]
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22
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Zheng Y, Xiong C, Wang Z, Zhang L. Enhanced osteoblast cells adhesion, spreading, and proliferation to surface-carboxylated poly(etheretherketone). J BIOACT COMPAT POL 2015. [DOI: 10.1177/0883911515572494] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Poly(etheretherketone) is a rigid semicrystalline thermoplastic that combines excellent mechanical properties, broad chemical resistance, and bone-like stiffness, and is widely used in biomedical fields. However, the hydrophobic bio-inert surface of poly(etheretherketone) tends to hinder its biomedical applications when direct osteointegration between the implants and the host tissue is desired. In this investigation, poly(etheretherketone) surface was functionalized by a method with chemistry analogous to the formation of organosilane self-assembled monolayers on glass or silicon. First, poly(etheretherketone) surface activation with selective carbonyl reduction introduces surface hydroxylation. And then treatment of the hydroxylation-pretreated poly(etheretherketone) samples with a substituted organosilane solution forms the carboxyl (–COOH) functional surface layers. The modified surfaces were characterized using X-ray photoelectron spectroscopy, water contact angle measurements, differential scanning calorimetry, X-ray diffraction, and surface profiler. The effect of cell adhesion, spreading, and proliferation on each specimen was investigated. Pre-osteoblast cells (MC3T3-E1) adhesion, spreading, and proliferation were improved remarkably on surface-carboxylated poly(etheretherketone). Poly(etheretherketone) modified with –COOH on its surface has potential use in orthopedic or dental implants.
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Affiliation(s)
- Yanyan Zheng
- Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu, People’s Republic of China
- University of Chinese Academy of Sciences, Beijing, People’s Republic of China
| | - Chengdong Xiong
- Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu, People’s Republic of China
| | - Zhecun Wang
- Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu, People’s Republic of China
- University of Chinese Academy of Sciences, Beijing, People’s Republic of China
| | - Lifang Zhang
- Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu, People’s Republic of China
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23
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Rosa AL, Kato RB, Castro Raucci LMS, Teixeira LN, de Oliveira FS, Bellesini LS, de Oliveira PT, Hassan MQ, Beloti MM. Nanotopography drives stem cell fate toward osteoblast differentiation through α1β1 integrin signaling pathway. J Cell Biochem 2014; 115:540-8. [PMID: 24122940 DOI: 10.1002/jcb.24688] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2013] [Accepted: 09/26/2013] [Indexed: 12/14/2022]
Abstract
The aim of our study was to investigate the osteoinductive potential of a titanium (Ti) surface with nanotopography, using mesenchymal stem cells (MSCs) and the mechanism involved in this phenomenon. Polished Ti discs were chemically treated with H2 SO4 /H2 O2 to yield nanotopography and rat MSCs were cultured under osteogenic and non-osteogenic conditions on both nanotopography and untreated polished (control) Ti surfaces. The nanotopography increased cell proliferation and alkaline phosphatase (Alp) activity and upregulated the gene expression of key bone markers of cells grown under both osteogenic and non-osteogenic conditions. Additionally, the gene expression of α1 and β1 integrins was higher in cells grown on Ti with nanotopography under non-osteogeneic condition compared with control Ti surface. The higher gene expression of bone markers and Alp activity induced by Ti with nanotopography was reduced by obtustatin, an α1β1 integrin inhibitor. These results indicate that α1β1 integrin signaling pathway determines the osteoinductive effect of nanotopography on MSCs. This finding highlights a novel mechanism involved in nanosurface-mediated MSCs fate and may contribute to the development of new surface modifications aiming to accelerate and/or enhance the process of osseointegration.
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Affiliation(s)
- A L Rosa
- Cell Culture Laboratory, School of Dentistry of Ribeirão Preto, University of São Paulo, Av do Café s/n, 14040-904, Ribeirão Preto, SP, Brazil
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24
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Dhayal M, Kapoor R, Sistla PG, Pandey RR, Kar S, Saini KK, Pande G. Strategies to prepare TiO2 thin films, doped with transition metal ions, that exhibit specific physicochemical properties to support osteoblast cell adhesion and proliferation. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 37:99-107. [DOI: 10.1016/j.msec.2013.12.035] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2013] [Revised: 10/28/2013] [Accepted: 12/27/2013] [Indexed: 10/25/2022]
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25
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Wang B, Sun JY, Qian S, Liu XY, Zhang SL, Dong SJ, Zha GC. Adhesion of osteoblast-like cell on silicon-doped TiO2 film prepared by cathodic arc deposition. Biotechnol Lett 2013; 35:975-82. [PMID: 23436126 DOI: 10.1007/s10529-013-1155-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2012] [Accepted: 02/06/2013] [Indexed: 12/13/2022]
Abstract
Silicon-doped TiO2 (Si-TiO2) and pure TiO2 films were deposited on titanium substrates by cathodic arc deposition technique. The surface characteristics of the films, such as surface topography, elemental composition and wettability, were studied. About 4.6 % Si was incorporated into the Si-TiO2 films with a water contact angle of about 83°. The adhesive behaviors of osteoblast-like MG63 cells on both films were investigated through cell counting assay, immunocytochemistry, real-time PCR and western blotting analysis. Cells cultured on the Si-TiO2 films had a greater cellular viability, stronger cytoskeleton and focal adhesion, and more cellular spreading than those on the pure TiO2 films. Moreover, the expression levels of integrin β1 and focal adhesion kinase (FAK) genes, FAK and the phosphorylation of FAK proteins were up-regulated in cells cultured on the Si-TiO2 films. These results indicated that the Si-TiO2 films possess significantly enhanced cytocompatibility and provide potential solutions for the surface modification of implants in the future.
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Affiliation(s)
- Bing Wang
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, Suzhou, 215006, Jiangsu, People's Republic of China.
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26
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Krząkała A, Kazek-Kęsik A, Simka W. Application of plasma electrolytic oxidation to bioactive surface formation on titanium and its alloys. RSC Adv 2013. [DOI: 10.1039/c3ra43465f] [Citation(s) in RCA: 81] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
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27
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Hu H, Zhang W, Qiao Y, Jiang X, Liu X, Ding C. Antibacterial activity and increased bone marrow stem cell functions of Zn-incorporated TiO2 coatings on titanium. Acta Biomater 2012; 8:904-15. [PMID: 22023752 DOI: 10.1016/j.actbio.2011.09.031] [Citation(s) in RCA: 235] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2011] [Revised: 09/22/2011] [Accepted: 09/26/2011] [Indexed: 11/26/2022]
Abstract
In this work, zinc was incorporated into TiO2 coatings on titanium by plasma electrolytic oxidation to obtain the implant with good bacterial inhibition ability and bone-formability. The porous and nanostructured Zn-incorporated TiO2 coatings are built up from pores smaller than 5 μm and grains 20-100 nm in size, in which the element Zn exists as ZnO. The results obtained from the antibacterial studies suggest that the Zn-incorporated TiO2 coatings can greatly inhibit the growth of both Staphylococcus aureus and Escherichia coli, and the ability to inhibit bacteria can be improved by increasing the Zn content in the coatings. Moreover, the in vitro cytocompatibility evaluation demonstrates that the adhesion, proliferation and differentiation of rat bone marrow stem cells (bMSC) on Zn-incorporated coatings are significantly enhanced compared with Zn-free coating and commercially pure Ti plate, and no cytotoxicity appeared on any of the Zn-incorporated TiO2 coatings. Moreover, bMSC express higher level of alkaline phosphatase activity on Zn-incorporated TiO2 coatings and are induced to differentiate into osteoblast cells. The better antibacterial activity, cytocompatibility and the capability to promote bMSC osteogenic differentiation of Zn-incorporated TiO2 coatings may be attributed to the fact that Zn ions can be slowly and constantly released from the coatings. In conclusion, innovative Zn-incorporated TiO2 coatings on titanium with excellent antibacterial activity and biocompatibility are promising candidates for orthopedic and dental implants.
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