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Gong M, Yang X, Li Z, Yu A, Liu Y, Guo H, Li W, Xu S, Xiao L, Li T, Zou W. Surface engineering of pure magnesium in medical implant applications. Heliyon 2024; 10:e31703. [PMID: 38845950 PMCID: PMC11153198 DOI: 10.1016/j.heliyon.2024.e31703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Revised: 04/18/2024] [Accepted: 05/21/2024] [Indexed: 06/09/2024] Open
Abstract
This review comprehensively surveys the latest advancements in surface modification of pure magnesium (Mg) in recent years, with a focus on various cost-effective procedures, comparative analyses, and assessments of outcomes, addressing the merits and drawbacks of pure Mg and its alloys. Diverse economically feasible methods for surface modification, such as hydrothermal processes and ultrasonic micro-arc oxidation (UMAO), are discussed, emphasizing their exceptional performance in enhancing surface properties. The attention is directed towards the biocompatibility and corrosion resistance of pure Mg, underscoring the remarkable efficacy of techniques such as Ca-deficientca-deficient hydroxyapatite (CDHA)/MgF2 bi-layer coating and UMAO coating in electrochemical processes. These methods open up novel avenues for the application of pure Mg in medical implants. Emphasis is placed on the significance of adhering to the principles of reinforcing the foundation and addressing the source. The advocacy is for a judicious approach to corrosion protection on high-purity Mg surfaces, aiming to optimize the overall mechanical performance. Lastly, a call is made for future in-depth investigations into areas such as composite coatings and the biodegradation mechanisms of pure Mg surfaces, aiming to propel the field towards more sustainable and innovative developments.
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Affiliation(s)
- Mengqi Gong
- School of Advanced Manufacturing, Nanchang University, Nanchang, 330031, China
- Key Laboratory of Near Net Forming in Jiangxi Province, Nanchang, 330031, China
| | - Xiangjie Yang
- School of Advanced Manufacturing, Nanchang University, Nanchang, 330031, China
- Key Laboratory of Near Net Forming in Jiangxi Province, Nanchang, 330031, China
| | - Zhengnan Li
- School of Physics and Materials Science, Nanchang University, Nanchang, 330031, China
| | - Anshan Yu
- School of Advanced Manufacturing, Nanchang University, Nanchang, 330031, China
- Key Laboratory of Near Net Forming in Jiangxi Province, Nanchang, 330031, China
- Dongguan Magna Medical Devices Co., Ltd., Dongguan, 523808, China
- School of Mechanical and Electrical Engineering, Jinggangshan University, Ji'an, 343009, China
| | - Yong Liu
- School of Advanced Manufacturing, Nanchang University, Nanchang, 330031, China
- Key Laboratory of Lightweight and High Strength Structural Materials of Jiangxi Province, Nanchang, 330031, China
| | - Hongmin Guo
- Key Laboratory of Near Net Forming in Jiangxi Province, Nanchang, 330031, China
- School of Physics and Materials Science, Nanchang University, Nanchang, 330031, China
| | - Weirong Li
- Dongguan Magna Medical Devices Co., Ltd., Dongguan, 523808, China
| | - Shengliang Xu
- School of Advanced Manufacturing, Nanchang University, Nanchang, 330031, China
- Key Laboratory of Near Net Forming in Jiangxi Province, Nanchang, 330031, China
| | - Libing Xiao
- School of Advanced Manufacturing, Nanchang University, Nanchang, 330031, China
- Key Laboratory of Near Net Forming in Jiangxi Province, Nanchang, 330031, China
| | - Tongyu Li
- School of Advanced Manufacturing, Nanchang University, Nanchang, 330031, China
- Key Laboratory of Near Net Forming in Jiangxi Province, Nanchang, 330031, China
| | - Weifeng Zou
- School of Advanced Manufacturing, Nanchang University, Nanchang, 330031, China
- Key Laboratory of Near Net Forming in Jiangxi Province, Nanchang, 330031, China
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Wang H, Xu X, Wang X, Qu W, Qing Y, Li S, Chen B, Ying B, Li R, Qin Y. Performance optimization of biomimetic ant-nest silver nanoparticle coatings for antibacterial and osseointegration of implant surfaces. BIOMATERIALS ADVANCES 2023; 149:213394. [PMID: 37001309 DOI: 10.1016/j.bioadv.2023.213394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 01/27/2023] [Accepted: 03/15/2023] [Indexed: 05/02/2023]
Abstract
Infection prevention and bone-implant integration remain major clinical challenges. Silver nanoparticle (AgNPs) bone-implant coatings have received extensive attention. Balancing the toxicity and antibacterial properties of AgNP coatings has become a significant problem. In this study, inspired by the structure of the ant-nest, a polyetherimide (PEI) coating with ant-nest structure was prepared, aiming to realize the structural modification of the AgNPs coating. AgNPs were loaded in the inner porous area of the PEI ant-nest coating, avoiding direct contact between AgNPs and cells. The nanopores on the surface of the coating ensured the orderly release of silver ions. SEM, FTIR, XPS, and XRD experiments confirmed that the PEI ant-nest coating was successfully prepared. Interestingly, in the PEI ant-nest coating, Ag+ showed a steady increase in the release trend within 28 days, and there was no early burst release phenomenon. In -vivo experiments showed a good control effect for local infection. In order to improve the osteogenic properties of the materials, 45S5 bioactive glasses (BG) were loaded to achieve further osseointegration. In general, this natural ant-nest-inspired surface modification coating for orthopedic prostheses provides a new strategy for balancing the antibacterial and toxic effects of AgNP coatings.
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Affiliation(s)
- Hao Wang
- Department of Orthopaedics, The Second Hospital of Jilin University, Jilin University, Changchun 130041, China
| | - Xinyu Xu
- Department of Orthopaedics, The Second Hospital of Jilin University, Jilin University, Changchun 130041, China
| | - Xingyue Wang
- Department of Orthopaedics, The Second Hospital of Jilin University, Jilin University, Changchun 130041, China
| | - Wenrui Qu
- Department of Orthopaedics, The Second Hospital of Jilin University, Jilin University, Changchun 130041, China
| | - Yunan Qing
- Department of Orthopaedics, The Second Hospital of Jilin University, Jilin University, Changchun 130041, China
| | - Shihuai Li
- Department of Orthopaedics, The Second Hospital of Jilin University, Jilin University, Changchun 130041, China
| | - Bo Chen
- Department of Orthopaedics, The Second Hospital of Jilin University, Jilin University, Changchun 130041, China
| | - Boda Ying
- Department of Orthopaedics, The Second Hospital of Jilin University, Jilin University, Changchun 130041, China
| | - Ruiyan Li
- Department of Orthopaedics, The Second Hospital of Jilin University, Jilin University, Changchun 130041, China.
| | - Yanguo Qin
- Department of Orthopaedics, The Second Hospital of Jilin University, Jilin University, Changchun 130041, China.
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Dong J, Zhong J, Hou R, Hu X, Chen Y, Weng H, Zhang Z, Liu B, Yang S, Peng Z. Polymer bilayer-Micro arc oxidation surface coating on pure magnesium for bone implantation. J Orthop Translat 2023; 40:27-36. [PMID: 37274179 PMCID: PMC10232471 DOI: 10.1016/j.jot.2023.05.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/11/2022] [Revised: 05/03/2023] [Accepted: 05/03/2023] [Indexed: 06/06/2023] Open
Abstract
Background Pure magnesium-based ortho-implants have a number of advantages. However, vital parameters like degradation rate and biocompatibility still call for significant improvement. Methods In this study, poly (1,3-trimethylene carbonate) (PTMC) and polydopamine (PDA) bilayer and micro arc oxidation composite coatings were prepared successively on magnesium surface by immersion method and microarc oxidation. Its corrosion resistance and biocompatibility were evaluated by in vitro corrosion tests, cellular compatibility experiments, and in vivo animal experiments. Results In vitro experiments demonstrated that the composite coating provides excellent corrosion protection and biocompatibility. Animal studies demonstrated that the composite coating slowed the degradation of the implant and was not toxic to animal viscera. Conclusion In conclusion, the inorganic-organic composite coating proposed in this study provided good corrosion resistance and enhanced biocompatibility for pure magnesium implants. The translational potential of this article The translational potential of this article is to develop an anti-corrosion composite coating on a pure magnesium surface and to verify the viability of its use in animal models. It is hoped to open up a new approach to the design of new degradable orthopedic magnesium-based implants.
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Affiliation(s)
- Jieyang Dong
- Ningbo University Affiliated Li Huili Hospital, Ningbo University, Ningbo, 315040, China
- Ningbo University School of Medicine, Ningbo University, Ningbo, 315211, China
| | - Jiaqi Zhong
- Ningbo University Affiliated Li Huili Hospital, Ningbo University, Ningbo, 315040, China
- Ningbo University School of Medicine, Ningbo University, Ningbo, 315211, China
| | - Ruixia Hou
- Ningbo University School of Medicine, Ningbo University, Ningbo, 315211, China
| | - Xiaodong Hu
- Ningbo University Affiliated Li Huili Hospital, Ningbo University, Ningbo, 315040, China
- Ningbo University School of Medicine, Ningbo University, Ningbo, 315211, China
| | - Yujiong Chen
- Ningbo University Affiliated Li Huili Hospital, Ningbo University, Ningbo, 315040, China
- Ningbo University School of Medicine, Ningbo University, Ningbo, 315211, China
| | - Hangbin Weng
- Ningbo University Affiliated Li Huili Hospital, Ningbo University, Ningbo, 315040, China
- Ningbo University School of Medicine, Ningbo University, Ningbo, 315211, China
| | - Zhewei Zhang
- Ningbo University Affiliated Li Huili Hospital, Ningbo University, Ningbo, 315040, China
- Ningbo University School of Medicine, Ningbo University, Ningbo, 315211, China
| | - Botao Liu
- Ningbo University Affiliated Li Huili Hospital, Ningbo University, Ningbo, 315040, China
- Ningbo University School of Medicine, Ningbo University, Ningbo, 315211, China
| | - Shengbing Yang
- Shanghai Key Laboratory of Orthopaedic Implants, Department of Orthopaedic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200240, China
| | - Zhaoxiang Peng
- Ningbo University Affiliated Li Huili Hospital, Ningbo University, Ningbo, 315040, China
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Liu Z, Tang Q, Liu RT, Yu MZ, Peng H, Zhang CQ, Zhu ZZ, Wei XJ. Laponite intercalated biomimetic multilayer coating prevents glucocorticoids induced orthopedic implant failure. Bioact Mater 2023; 22:60-73. [PMID: 36203962 PMCID: PMC9519439 DOI: 10.1016/j.bioactmat.2022.09.013] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2022] [Revised: 08/18/2022] [Accepted: 09/12/2022] [Indexed: 11/25/2022] Open
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Characterization of Titanium Surface Modification Strategies for Osseointegration Enhancement. METALS 2021. [DOI: 10.3390/met11040618] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
As biocompatible metallic materials, titanium and its alloys have been widely used in the orthopedic field due to their superior strength, low density, and ease of processing. However, further improvement in biological response is still required for rapid osseointegration. Here, various Ti surface-treatment technologies were applied: hydroxyapatite blasting, sand blasting and acid etching, anodic oxidation, and micro-arc oxidation. The surface characteristics of specimens subjected to these techniques were analyzed in terms of structure, elemental composition, and wettability. The adhesion strength of the coating layer was also assessed for the coated specimens. Biocompatibility was compared via tests of in vitro attachment and proliferation of pre-osteoblast cells.
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Liu J, Liu J, Attarilar S, Wang C, Tamaddon M, Yang C, Xie K, Yao J, Wang L, Liu C, Tang Y. Nano-Modified Titanium Implant Materials: A Way Toward Improved Antibacterial Properties. Front Bioeng Biotechnol 2020; 8:576969. [PMID: 33330415 PMCID: PMC7719827 DOI: 10.3389/fbioe.2020.576969] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2020] [Accepted: 10/22/2020] [Indexed: 01/01/2023] Open
Abstract
Titanium and its alloys have superb biocompatibility, low elastic modulus, and favorable corrosion resistance. These exceptional properties lead to its wide use as a medical implant material. Titanium itself does not have antibacterial properties, so bacteria can gather and adhere to its surface resulting in infection issues. The infection is among the main reasons for implant failure in orthopedic surgeries. Nano-modification, as one of the good options, has the potential to induce different degrees of antibacterial effect on the surface of implant materials. At the same time, the nano-modification procedure and the produced nanostructures should not adversely affect the osteogenic activity, and it should simultaneously lead to favorable antibacterial properties on the surface of the implant. This article scrutinizes and deals with the surface nano-modification of titanium implant materials from three aspects: nanostructures formation procedures, nanomaterials loading, and nano-morphology. In this regard, the research progress on the antibacterial properties of various surface nano-modification of titanium implant materials and the related procedures are introduced, and the new trends will be discussed in order to improve the related materials and methods.
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Affiliation(s)
- Jianqiao Liu
- Department of Orthopaedics, Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, China
- Youjiang Medical University for Nationalities, Baise, China
| | - Jia Liu
- Department of Orthopaedics, Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, China
| | - Shokouh Attarilar
- Department of Pediatric Orthopaedics, Xin Hua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Chong Wang
- College of Mechanical Engineering, Dongguan University of Technology, Dongguan, China
| | - Maryam Tamaddon
- Institute of Orthopaedic and Musculoskeletal Science, Division of Surgery & Orthopaedic Science, University College London, The Royal National National Orthopaedic Hospital, Stanmore, United Kingdom
| | - Chengliang Yang
- Department of Orthopaedics, Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, China
| | - Kegong Xie
- Department of Orthopaedics, Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, China
| | - Jinguang Yao
- Youjiang Medical University for Nationalities, Baise, China
| | - Liqiang Wang
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Chaozong Liu
- Institute of Orthopaedic and Musculoskeletal Science, Division of Surgery & Orthopaedic Science, University College London, The Royal National National Orthopaedic Hospital, Stanmore, United Kingdom
| | - Yujin Tang
- Department of Orthopaedics, Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, China
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Construction of tantalum/poly(ether imide) coatings on magnesium implants with both corrosion protection and osseointegration properties. Bioact Mater 2020; 6:1189-1200. [PMID: 33163700 PMCID: PMC7595939 DOI: 10.1016/j.bioactmat.2020.10.007] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 10/12/2020] [Accepted: 10/14/2020] [Indexed: 12/16/2022] Open
Abstract
Poly(ether imide) (PEI) has shown satisfactory corrosion protection capability with good adhesion strength as a coating for magnesium (Mg), a potential candidate of biodegradable orthopedic implant material. However, its innate hydrophobic property causes insufficient osteoblast affinity and a lack of osseointegration. Herein, we modify the physical and chemical properties of a PEI-coated Mg implant. A plasma immersion ion implantation technique is combined with direct current (DC) magnetron sputtering to introduce biologically compatible tantalum (Ta) onto the surface of the PEI coating. The PEI-coating layer is not damaged during this process owing to the extremely short processing time (30 s), retaining its high corrosion protection property and adhesion stability. The Ta-implanted layer (roughly 10-nm-thick) on the topmost PEI surface generates long-term surface hydrophilicity and favorable surface conditions for pre-osteoblasts to adhere, proliferate, and differentiate. Furthermore, in a rabbit femur study, the Ta/PEI-coated Mg implant demonstrates significantly enhanced bone tissue affinity and osseointegration capability. These results indicate that Ta/PEI-coated Mg is promising for achieving early mechanical fixation and long-term success in biodegradable orthopedic implant applications. PEI coating with subsequent Ta ion implantation was prepared on WE43 Mg alloy implant. The corrosion resistance of Mg alloy implant was improved by Ta embedded PEI coating. The wettability of PEI coating layer was enhanced by embedded Ta on its top-surface. Ta embedded PEI coating significantly improved in vitro and in vivo responses. Ta embedded PEI-coated Mg is highly suitable as a biodegradable orthopedic implant material.
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Rahman M, Dutta NK, Roy Choudhury N. Magnesium Alloys With Tunable Interfaces as Bone Implant Materials. Front Bioeng Biotechnol 2020; 8:564. [PMID: 32587850 PMCID: PMC7297987 DOI: 10.3389/fbioe.2020.00564] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Accepted: 05/11/2020] [Indexed: 12/20/2022] Open
Abstract
Magnesium (Mg) based biodegradable materials are a new generation orthopedic implant materials that are intended to possess same mechanical properties as that of bone. Mg alloys are considered as promising substitutes to permanent implants due to their biodegradability in the physiological environment. However, rapid corrosion rate is one of the major constraints of using Mg alloys in clinical applications in spite of their excellent biocompatibility. Approaches to overcome the limitations include the selection of adequate alloying elements, proper surface treatment, surface modification with coating to control the degradation rate. This review focuses on current advances on surface engineering of Mg based biomaterials for biomedical applications. The review begins with a description of corrosion mechanism of Mg alloy, the requirement for appropriate surface functionalization/coatings, their structure-property-performance relationship, and suitability for biomedical applications. The control of physico-chemical properties such as wettability, surface morphology, surface chemistry, and surface functional groups of the coating tailored by various approaches forms the pivotal part of the review. Chemical surface treatment offers initial protection from corrosion and inorganic coating like hydroxyapatite (HA) improves the biocompatibility of the substrate. Considering the demand of ideal implant materials, multilayer hybrid coatings on Mg alloy in combination with chemical pretreatment or inorganic HA coating, and protein-based polymer coating could be a promising technique to improve corrosion resistance and promote biocompatibility of Mg-based alloys.
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Affiliation(s)
| | | | - Namita Roy Choudhury
- Chemical and Environmental Engineering, School of Engineering, RMIT University, Melbourne, VIC, Australia
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Yang Y, Zhou J, Chen Q, Detsch R, Cui X, Jin G, Virtanen S, Boccaccini AR. In Vitro Osteocompatibility and Enhanced Biocorrosion Resistance of Diammonium Hydrogen Phosphate-Pretreated/Poly(ether imide) Coatings on Magnesium for Orthopedic Application. ACS APPLIED MATERIALS & INTERFACES 2019; 11:29667-29680. [PMID: 31335111 DOI: 10.1021/acsami.9b11073] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Magnesium, as a biodegradable metal, is a promising candidate for biomedical applications. To modify the degradation behavior of magnesium and improve its osteocompatibility, chemical conversion and spin coating methods were combined to develop a diammonium hydrogen phosphate-pretreated/poly(ether imide) (DAHP/PEI) co-coating system. The diammonium hydrogen phosphate pretreatment was employed to enhance the attachment between PEI coatings and the magnesium substrate; meanwhile, it could serve as another bioactive and anticorrosion layer when PEI coatings break down. Surface characterization, electrochemical tests, and short-term immersion tests in DMEM were performed to evaluate DAHP/PEI coatings. Electrochemical measurements showed that DAHP/PEI coatings significantly improved the corrosion resistance of pure magnesium. No obvious changes of the chemical compositions of DAHP/PEI coatings occurred after 72 h of immersion in DMEM. An in vitro cytocompatibility study confirmed that viability and LDH activity of human osteoblast-like cells on DAHP/PEI coatings showed higher values than those on the DAHP-pretreated layer and pure magnesium. The DAHP-pretreated layer could still enhance the ALP activity of MG-63 cells after the degradation of PEI in DAHP/PEI coatings. Besides that, the in vitro cellular response to the treated magnesium was investigated to gain knowledge on the differentiation and proliferation of human adipose-derived stem cells (hADSCs). Cell distribution and morphology were observed by fluorescence and SEM images, which demonstrated that DAHP/PEI coatings facilitated cell differentiation and proliferation. The high level of C-terminals of collagen type I production of hADSCs on DAHP/PEI coatings indicated the potential of the coating for promoting osteogenic differentiation. Positive results from long-term cytocompatibility and proliferation tests indicate that DAHP/PEI coatings can offer an excellent surface for hADSCs.
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Affiliation(s)
- Yuyun Yang
- Institute of Surface/Interface Science and Technology, Department of Material Science and Chemical Engineering , Harbin Engineering University , 150001 Harbin , China
| | | | - Qiang Chen
- State Key Laboratory of Solidification Processing , Northwestern Polytechnical University , Xi'an , 710072 Shaanxi , China
| | | | - Xiufang Cui
- Institute of Surface/Interface Science and Technology, Department of Material Science and Chemical Engineering , Harbin Engineering University , 150001 Harbin , China
| | - Guo Jin
- Institute of Surface/Interface Science and Technology, Department of Material Science and Chemical Engineering , Harbin Engineering University , 150001 Harbin , China
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Kang MH, Lee H, Jang TS, Seong YJ, Kim HE, Koh YH, Song J, Jung HD. Biomimetic porous Mg with tunable mechanical properties and biodegradation rates for bone regeneration. Acta Biomater 2019; 84:453-467. [PMID: 30500444 DOI: 10.1016/j.actbio.2018.11.045] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Revised: 11/02/2018] [Accepted: 11/26/2018] [Indexed: 11/19/2022]
Abstract
The medical applications of porous Mg scaffolds are limited owing to its rapid corrosion, which dramatically decreases the mechanical strength of the scaffold. Mimicking the bone structure and composition can improve the mechanical and biological properties of porous Mg scaffolds. The Mg structure can also be coated with HA by an aqueous precipitation coating method to enhance both the corrosion resistance and the biocompatibility. However, due to the brittleness of HA coating layer, cracks tend to form in the HA coating layer, which may influence the corrosion and biological functionality of the scaffold. Consequently, in this study, hybrid poly(ether imide) (PEI)-SiO2 layers were applied to the HA-coated biomimetic porous Mg to impart the structure with the high corrosion resistance associated with PEI and excellent bioactivity with SiO2. The porosity of the Mg was controlled by adjusting the concentration of the sodium chloride (NaCl) particles used in the fabrication via the space-holder method. The mechanical measurements showed that the compressive strength and stiffness of the biomimetic porous Mg increased as the portion of the dense region increased. In addition, following results show that HA/(PEI-SiO2) hybrid-coated biomimetic Mg is a promising biodegradable scaffold for orthopedic applications. In-vitro testing revealed that the proposed hybrid coating reduced the degradation rate and facilitated osteoblast spreading compared to HA- and HA/PEI-coating scaffolds. Moreover, in-vivo testing with a rabbit femoropatellar groove model showed improved tissue formation, reduced corrosion and degradation, and improved bone formation on the scaffold. STATEMENT OF SIGNIFICANCE: Porous Mg is a promising biodegradable scaffold for orthopedic applications. However, there are limitations in applying porous Mg for an orthopedic biomaterial due to its poor mechanical properties and susceptibility to rapid corrosion. Here, we strategically designed the structure and coating layer of porous Mg to overcome these limitations. First, porous Mg was fabricated by mimicking the bone structure which has a combined structure of dense and porous regions, thus resulting in an enhancement of mechanical properties. Furthermore, the biomimetic porous Mg was coated with HA/(PEI-SiO2) hybrid layer to improve both corrosion resistance and biocompatibility. As the final outcome, with tunable mechanical and biodegradable properties, HA/(PEI-SiO2)-coated biomimetic porous Mg could be a promising candidate material for load-bearing orthopedic applications.
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Affiliation(s)
- Min-Ho Kang
- Department of Chemical and Biological Engineering, Seoul National University, Seoul 08826, Republic of Korea; Center of Nanoparticle Research, Institute for Basic Science (IBS), Republic of Korea
| | - Hyun Lee
- Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Tae-Sik Jang
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 70 Nanyang Drive, 637457 Singapore, Singapore; Research Institute of Advanced Manufacturing Technology, Korea Institute of Industrial Technology, Incheon 21999, Republic of Korea
| | - Yun-Jeong Seong
- Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Hyoun-Ee Kim
- Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Young-Hag Koh
- School of Biomedical Engineering, Korea University, Seoul 136-703, Republic of Korea
| | - Juha Song
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 70 Nanyang Drive, 637457 Singapore, Singapore
| | - Hyun-Do Jung
- Research Institute of Advanced Manufacturing Technology, Korea Institute of Industrial Technology, Incheon 21999, Republic of Korea.
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Sheng Y, Tian L, Wu C, Qin L, Ngai T. Biodegradable Poly(l-lactic acid) (PLLA) Coatings Fabricated from Nonsolvent Induced Phase Separation for Improving Corrosion Resistance of Magnesium Rods in Biological Fluids. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:10684-10693. [PMID: 30125116 DOI: 10.1021/acs.langmuir.8b02322] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Magnesium (Mg)-based biometals are increasingly becoming a promising candidate of the next-generation implantable materials due to their unique properties, such as high biocompatibility, favorable mechanical strength, and good biodegradability in physiological conditions. However, the swift corrosion of Mg, resulting in early loss of structural support, has posed an enormous challenge in clinical application of Mg-based implants. To overcome these limitations, herein we developed a novel method, which combines the traditional dip-coating with nonsolvent induced phase separation (NIPS), to fabricate biodegradable PLLA coatings with controlled membrane morphology on pure Mg rods. Unlike the conventional dip-coating, where the polymer solution on the Mg substrates is left to evaporate directly under proper atmosphere, in NIPS, the polymer solution on the substrates is not left to dry but immersed in a nonsolvent of the PLLA, leading to the precipitation of polymer networks. Our results demonstrated that various polymer coatings with different morphologies and inner structures could be easily fabricated by a careful selection of nonsolvents. In comparison to dense PLLA coatings obtained from conventional solvent evaporation, PLLA coatings with a dense surface and porous inner structure were obtained when hexane and petroleum ether were used as the nonsolvents, while PLLA coatings with a completely porous structure were obtained when polar acetone and ethanol were chosen. The electrochemical corrosion tests and immersion tests further showed that all polymer coatings could significantly improve the corrosion resistance and suppress the corrosion rates of the substrates. However, PLLA films obtained via NIPS had much lower pH changes and slower Mg2+ release, implying better protective effects of the fabricated coatings. Based on results of all experiments, a new process for the corrosion mechanism of Mg implants during immersion has also been proposed in this work.
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Affiliation(s)
- Yifeng Sheng
- Department of Chemistry , The Chinese University of Hong Kong , Shatin, N. T. Hong Kong , China
| | - Li Tian
- Musculoskeletal Research Laboratory, Department of Orthopaedics and Traumatology, and Innovative Orthopaedic Biomaterial and Drug Translational Research Laboratory of Li Ka Shing Institute of Health, Faculty of Medicine , The Chinese University of Hong Kong , Shatin, N. T. Hong Kong , China
| | - Chi Wu
- Department of Chemistry , The Chinese University of Hong Kong , Shatin, N. T. Hong Kong , China
| | - Ling Qin
- Musculoskeletal Research Laboratory, Department of Orthopaedics and Traumatology, and Innovative Orthopaedic Biomaterial and Drug Translational Research Laboratory of Li Ka Shing Institute of Health, Faculty of Medicine , The Chinese University of Hong Kong , Shatin, N. T. Hong Kong , China
| | - To Ngai
- Department of Chemistry , The Chinese University of Hong Kong , Shatin, N. T. Hong Kong , China
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Kang MH, Jang TS, Jung HD, Kim SM, Kim HE, Koh YH, Song J. Poly(ether imide)-silica hybrid coatings for tunable corrosion behavior and improved biocompatibility of magnesium implants. ACTA ACUST UNITED AC 2016; 11:035003. [PMID: 27147643 DOI: 10.1088/1748-6041/11/3/035003] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Magnesium (Mg) and its alloys have gained considerable attention as a promising biomaterial for bioresorbable orthopedic implants, but the corrosion behavior of Mg-based implants is still the major issue for clinical use. In order to improve the corrosion stability and implant-tissue interfaces of these implants, methods for coating Mg have been actively investigated. In this study, poly(ether imide) (PEI)-silica hybrid material was coated on Mg, for the tunable degradation and enhanced biological behavior. Homogeneous PEI-silica hybrid materials with various silica contents were coated on Mg substrates without any cracks, where silica nanoparticles were well dispersed in the PEI matrix without significant particle agglomeration up the 30 vol% silica. The hybrid coatings maintained good adhesion strength of PEI to Mg. The corrosion rate of hybrid-coated Mg was increased along with the increment of the silica content, due to improved hydrophilicity of the hybrid coating layers. Moreover, the biocompatibility of the hybrid-coated Mg specimens was significantly improved, mainly due to the higher Mg ion concentrations associated with faster corrosion, compared to PEI-coated Mg. Therefore, PEI-silica hybrid systems have significant potential as a coating material of Mg for load-bearing orthopedic applications by providing tunable corrosion behavior and enhanced biological performance.
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Affiliation(s)
- Min-Ho Kang
- Department of Materials Science and Engineering, Seoul National University, Seoul, 151-742, Korea
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13
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Kang MH, Jang TS, Kim SW, Park HS, Song J, Kim HE, Jung KH, Jung HD. MgF2-coated porous magnesium/alumina scaffolds with improved strength, corrosion resistance, and biological performance for biomedical applications. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 62:634-42. [PMID: 26952467 DOI: 10.1016/j.msec.2016.01.085] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Revised: 01/20/2016] [Accepted: 01/28/2016] [Indexed: 11/19/2022]
Abstract
Porous magnesium (Mg) has recently emerged as a promising biodegradable alternative to biometal for bone ingrowth; however, its low mechanical properties and high corrosion rate in biological environments remain problematic. In this study, porous magnesium was implemented in a scaffold that closely mimics the mechanical properties of human bones with a controlled degradation rate and shows good biocompatibility to match the regeneration rate of bone tissue at the affected site. The alumina-reinforced Mg scaffold was produced by spark plasma sintering and coated with magnesium fluoride (MgF2) using a hydrofluoric acid solution to regulate the corrosion rate under physiological conditions. Sodium chloride granules (NaCl), acting as space holders, were leached out to achieve porous samples (60%) presenting an average pore size of 240 μm with complete pore interconnectivity. When the alumina content increased from 0 to 5 vol%, compressive strength and stiffness rose considerably from 9.5 to 13.8 MPa and from 0.24 to 0.40 GPa, respectively. Moreover, the biological response evaluated by in vitro cell test and blood test of the MgF2-coated porous Mg composite was enhanced with better corrosion resistance compared with that of uncoated counterparts. Consequently, MgF2-coated porous Mg/alumina composites may be applied in load-bearing biodegradable implants.
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Affiliation(s)
- Min-Ho Kang
- Department of Materials Science and Engineering, Seoul National University, Seoul 151-744, Republic of Korea
| | - Tae-Sik Jang
- Department of Materials Science and Engineering, Seoul National University, Seoul 151-744, Republic of Korea
| | - Sung Won Kim
- Department of Materials Science and Engineering, Seoul National University, Seoul 151-744, Republic of Korea
| | - Hui-Sun Park
- Department of Materials Science and Engineering, Seoul National University, Seoul 151-744, Republic of Korea
| | - Juha Song
- Department of Materials Science and Engineering, Seoul National University, Seoul 151-744, Republic of Korea; Advanced Institutes of Convergence Technology, Seoul National University, Suwon-si 443-270, Republic of Korea
| | - Hyoun-Ee Kim
- Department of Materials Science and Engineering, Seoul National University, Seoul 151-744, Republic of Korea; Advanced Institutes of Convergence Technology, Seoul National University, Suwon-si 443-270, Republic of Korea
| | - Kyung-Hwan Jung
- Additive Manufacturing Process R&D Group, Korea Institute of Industrial Technology, Gangneung 25440, Republic of Korea
| | - Hyun-Do Jung
- Liquid Processing & Casting Technology R&D Group, Korea Institute of Industrial Technology, Incheon 406-840, Republic of Korea.
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14
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Kaleekkal NJ, Rana D, Mohan D. Functionalized MWCNTs in improving the performance and biocompatibility of potential hemodialysis membranes. RSC Adv 2016. [DOI: 10.1039/c6ra09354j] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
Functionalized multi-walled carbon nanotube incorporated polyetherimide mixed matrix membranes for blood purification application.
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Affiliation(s)
- Noel Jacob Kaleekkal
- Membrane Laboratory
- Department of Chemical Engineering
- Anna University
- Chennai-600025
- India
| | - Dipak Rana
- Department of Chemical and Biological Engineering
- University of Ottawa
- Ottawa
- Canada
| | - D. Mohan
- Membrane Laboratory
- Department of Chemical Engineering
- Anna University
- Chennai-600025
- India
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15
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Kaleekkal NJ, Thanigaivelan A, Durga M, Girish R, Rana D, Soundararajan P, Mohan D. Graphene Oxide Nanocomposite Incorporated Poly(ether imide) Mixed Matrix Membranes for in Vitro Evaluation of Its Efficacy in Blood Purification Applications. Ind Eng Chem Res 2015. [DOI: 10.1021/acs.iecr.5b01655] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Noel Jacob Kaleekkal
- Membrane
Laboratory, Department of Chemical Engineering, Alagappa College of
Technology, Anna University, Chennai 600025, India
| | - A. Thanigaivelan
- Membrane
Laboratory, Department of Chemical Engineering, Alagappa College of
Technology, Anna University, Chennai 600025, India
| | - M. Durga
- Membrane
Laboratory, Department of Chemical Engineering, Alagappa College of
Technology, Anna University, Chennai 600025, India
| | - R. Girish
- Department
of Nephrology, Sri Ramachandra University, Porur, Chennai 600116, India
| | - Dipak Rana
- Department
of Chemical and Biological Engineering, University of Ottawa, 161 Louis Pasteur Private, Ottawa, Ontario K1N 6N5, Canada
| | - P. Soundararajan
- Department
of Nephrology, Sri Ramachandra University, Porur, Chennai 600116, India
| | - D. Mohan
- Membrane
Laboratory, Department of Chemical Engineering, Alagappa College of
Technology, Anna University, Chennai 600025, India
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16
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Haase T, Krost A, Sauter T, Kratz K, Peter J, Kamann S, Jung F, Lendlein A, Zohlnhöfer D, Rüder C. In vivo biocompatibility assessment of poly (ether imide) electrospun scaffolds. J Tissue Eng Regen Med 2015; 11:1034-1044. [PMID: 25712330 DOI: 10.1002/term.2002] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2014] [Revised: 11/25/2014] [Accepted: 12/17/2014] [Indexed: 12/18/2022]
Abstract
Poly(ether imide) (PEI), which can be chemically functionalized with biologically active ligands, has emerged as a potential biomaterial for medical implants. Electrospun PEI scaffolds have shown advantageous properties, such as enhanced endothelial cell adherence, proliferation and low platelet adhesion in in vitro experiments. In this study, the in vivo behaviour of electrospun PEI scaffolds and PEI films was examined in a murine subcutaneous implantation model. Electrospun PEI scaffolds and films were surgically implanted subcutaneously in the dorsae of mice. The surrounding subcutaneous tissue response was examined via histopathological examination at 7 and 28 days after implantation. No serious adverse events were observed for both types of PEI implants. The presence of macrophages or foreign body giant cells in the vicinity of the implants and the formation of a fibrous capsule indicated a normal foreign body reaction towards PEI films and scaffolds. Capsule thickness and inflammatory infiltration cells significantly decreased for PEI scaffolds during days 7-28 while remaining unchanged for PEI films. The infiltration of cells into the implant was observed for PEI scaffolds 7 days after implantation and remained stable until 28 days of implantation. Additionally some, but not all, PEI scaffold implants induced the formation of functional blood vessels in the vicinity of the implants. Conclusively, this study demonstrates the in vivo biocompatibility of PEI implants, with favourable properties of electrospun PEI scaffolds regarding tissue integration and wound healing. Copyright © 2015 John Wiley & Sons, Ltd.
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Affiliation(s)
- Tobias Haase
- Berlin-Brandenburg Centre for Regenerative Therapies, Berlin, Germany.,Department of Cardiology, Campus Virchow Klinikum, Charité, Berlin, Germany
| | - Annalena Krost
- Berlin-Brandenburg Centre for Regenerative Therapies, Berlin, Germany
| | - Tilman Sauter
- Berlin-Brandenburg Centre for Regenerative Therapies, Berlin, Germany.,Institute of Biomaterial Science, Helmholtz-Zentrum Geesthacht, Teltow, Germany.,Institute of Biochemistry and Biology, University of Potsdam, Germany
| | - Karl Kratz
- Berlin-Brandenburg Centre for Regenerative Therapies, Berlin, Germany.,Institute of Biomaterial Science, Helmholtz-Zentrum Geesthacht, Teltow, Germany
| | - Jan Peter
- Berlin-Brandenburg Centre for Regenerative Therapies, Berlin, Germany
| | - Stefanie Kamann
- Berlin-Brandenburg Centre for Regenerative Therapies, Berlin, Germany.,Department of Cardiology, Campus Virchow Klinikum, Charité, Berlin, Germany
| | - Friedrich Jung
- Berlin-Brandenburg Centre for Regenerative Therapies, Berlin, Germany.,Institute of Biomaterial Science, Helmholtz-Zentrum Geesthacht, Teltow, Germany
| | - Andreas Lendlein
- Berlin-Brandenburg Centre for Regenerative Therapies, Berlin, Germany.,Institute of Biomaterial Science, Helmholtz-Zentrum Geesthacht, Teltow, Germany.,Institute of Biochemistry and Biology, University of Potsdam, Germany
| | - Dietlind Zohlnhöfer
- Berlin-Brandenburg Centre for Regenerative Therapies, Berlin, Germany.,Department of Cardiology, Campus Virchow Klinikum, Charité, Berlin, Germany
| | - Constantin Rüder
- Berlin-Brandenburg Centre for Regenerative Therapies, Berlin, Germany.,Department of Cardiology, Campus Virchow Klinikum, Charité, Berlin, Germany
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