1
|
Yadav AK, Tripathi H, Rajput S, Singh P, Dubey AK, Kumar K, Chawla R, Rath C. Drug kinetics and antimicrobial properties of quaternary bioactive glasses 81S(81SiO 2-(16-x)CaO-2P 2O 5-1Na 2O-xMgO); an in-vitro study. BIOMATERIALS ADVANCES 2024; 157:213729. [PMID: 38101068 DOI: 10.1016/j.bioadv.2023.213729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 11/20/2023] [Accepted: 12/07/2023] [Indexed: 12/17/2023]
Abstract
Bioactive glasses have recently been attracted to meet the challenge in bone tissue regeneration, repair, healing, dental implants, etc. Among the conventional bio-glasses, a novel quaternary mesoporous nano bio-glass with composition 81S(81SiO2-(16-x)CaO-2P2O5-1Na2O-xMgO) (x = 0, 1.6, 2.4, 4 and 8 mol%) employing Stober's method has been explored for examining the above potential application through in-vitro SBF assay, MTT assay, antimicrobial activity and drug loading and release ability. With increasing the MgO concentration up to 4 mol%, from in-vitro SBF assay, we observe that HAp layer develops on the surface of the nBGs confirmed from XRD, FTIR and FESEM. MTT assay using MG-63 cells confirms the biocompatibility of the nBGs having cell viability >225 % for MGO_4 after 72 h which is more than the clinically used 45S5 bio-glass. We have observed cell viability of >125 % even after 168 h. Moreover, MGO_4 is found to restrict the growth of E. coli by 65 % while S. aureus by 75 %, confirming the antimicrobial activity. Despite an increase in the concentration of magnesium, nBGs are found to be non-toxic towards the RBCs up to 4 mol% of MgO while for 8 %, the hemolysis percentage is >6 % which is toxic. Being confirmed MGO_4 nBG as a bioactive material, various concentrations of drug (Dexamethasone (DEX)) loading and release kinetics are examined. We show that 80 % of loading in case of 10 mg-ml-1 and 70 % of cumulative release in 100 h. The mesoporous structure of MGO_4 having an average pore diameter of 5 nm and surface area of 216 m2 g-1 confirmed from BET supports the loading and release kinetics. We conclude that the quaternary MGO_4 nBG may be employed effectively for bone tissue regeneration due to its high biocompatibility, excellent in-vitro cell viability, antimicrobial response and protracted drug release.
Collapse
Affiliation(s)
- Akhilesh Kumar Yadav
- School of Materials Science and Technology, Indian Institute of Technology (BHU), Varanasi, Uttar Pradesh 221005, India
| | - Himanshu Tripathi
- School of Materials Science and Technology, Indian Institute of Technology (BHU), Varanasi, Uttar Pradesh 221005, India
| | - Sanjna Rajput
- School of Materials Science and Technology, Indian Institute of Technology (BHU), Varanasi, Uttar Pradesh 221005, India
| | - Priya Singh
- Department of Ceramic Engineering, Indian Institute of Technology (BHU), Varanasi, Uttar Pradesh 221005, India
| | - Ashutosh Kumar Dubey
- Department of Ceramic Engineering, Indian Institute of Technology (BHU), Varanasi, Uttar Pradesh 221005, India
| | - Krishan Kumar
- Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology (BHU), Varanasi, Uttar Pradesh 221005, India
| | - Ruchi Chawla
- Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology (BHU), Varanasi, Uttar Pradesh 221005, India
| | - Chandana Rath
- School of Materials Science and Technology, Indian Institute of Technology (BHU), Varanasi, Uttar Pradesh 221005, India.
| |
Collapse
|
2
|
Keerthiga G, Prasad MJNV, Vijayshankar D, Singh Raman RK. Polymeric Coatings for Magnesium Alloys for Biodegradable Implant Application: A Review. MATERIALS (BASEL, SWITZERLAND) 2023; 16:4700. [PMID: 37445014 DOI: 10.3390/ma16134700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 06/26/2023] [Accepted: 06/26/2023] [Indexed: 07/15/2023]
Abstract
Magnesium (Mg) alloys are a very attractive material of construction for biodegradable temporary implants. However, Mg alloys suffer unacceptably rapid corrosion rates in aqueous environments, including physiological fluid, that may cause premature mechanical failure of the implant. This necessitates a biodegradable surface barrier coating that should delay the corrosion of the implant until the fractured/damaged bone has healed. This review takes a brief account of the merits and demerits of various existing coating methodologies for the mitigation of Mg alloy corrosion. Since among the different coating approaches investigated, no single coating recipe seems to address the degradation control and functionality entirely, this review argues the need for polymer-based and biodegradable composite coatings.
Collapse
Affiliation(s)
- G Keerthiga
- IITB-Monash Research Academy, Mumbai 400076, Maharashtra, India
- Microstructural Engineering and Mechanical Performance Laboratory, Department of Metallurgical Engineering and Materials Science, Indian Institute of Technology Bombay, Mumbai 400076, Maharashtra, India
- Electrochemistry at Interface Lab, Department of Metallurgical Engineering and Materials Science, Indian Institute of Technology Bombay, Mumbai 400076, Maharashtra, India
- Department of Chemical and Biological Engineering, Monash University, Clayton, VIC 3800, Australia
| | - M J N V Prasad
- Microstructural Engineering and Mechanical Performance Laboratory, Department of Metallurgical Engineering and Materials Science, Indian Institute of Technology Bombay, Mumbai 400076, Maharashtra, India
| | - Dandapani Vijayshankar
- Electrochemistry at Interface Lab, Department of Metallurgical Engineering and Materials Science, Indian Institute of Technology Bombay, Mumbai 400076, Maharashtra, India
| | - R K Singh Raman
- Department of Chemical and Biological Engineering, Monash University, Clayton, VIC 3800, Australia
- Department of Mechanical and Aerospace Engineering, Monash University, Clayton, VIC 3800, Australia
| |
Collapse
|
3
|
Van Sy L, Quoc Binh PM, Lal B, Nguyen QB, Van Hung T, Panaitescu C, Nam ND. The role of alloyed strontium in the microstructures and alkaline electrochemistry of Mg-5Al-4Sn alloys. RSC Adv 2020; 10:34387-34395. [PMID: 35514386 PMCID: PMC9056793 DOI: 10.1039/d0ra01956a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2020] [Accepted: 08/28/2020] [Indexed: 01/17/2023] Open
Abstract
In this study, strontium is used as an alloying element for improving the pitting resistance of Mg–5Al–4Sn based alloys in an alkaline solution. Potentiodynamic polarization measurements suggest that the addition of strontium increases the robustness of the pitting resistance as a result of the higher pitting potential and wider range of passive potential. Electrochemical impedance spectroscopy (EIS) confirms the formation of a solid passive film on the alloy surface due to a significant increase in the passive film and the charge transfer resistance, as well as lower film and double layer constant phase element magnitude values. Additionally, the potentiostatic polarisation results also show a lower passive current density and passive film stability, resulting in an increase in the breakdown time when the amount of strontium added to the alloy increases from 0.0 to 1.0 wt%. Furthermore, the scanning electron microscopy results indicate that insignificant corrosion is observed on alloy specimens containing strontium, whereas there is fierce corrosion on alloy based surfaces. This robust corrosion resistance could be attributed to the α-grain reduction and refined precipitates at the alloy grain boundaries, resulting in promoted formation of the passive film which is formed from a mixture of magnesium, aluminum and tin oxides/hydroxides, as confirmed by the X-ray photoelectron spectroscopy results. The development of Mg–5Al–4Sn–xSr alloys with α-grain reduction, refined precipitates and pitting corrosion resistance by die casting.![]()
Collapse
Affiliation(s)
- Le Van Sy
- PetroVietnam University 762 Cach Mang Thang Tam Street, Long Toan Ward Ba Ria City 790000 Vietnam
| | - Phan Minh Quoc Binh
- PetroVietnam University 762 Cach Mang Thang Tam Street, Long Toan Ward Ba Ria City 790000 Vietnam
| | - Bhajan Lal
- Chemical Engineering Department, Universiti Teknologi Petronas Bandar Seri Iskandar 32610 Perak Malaysia
| | - Quy Bau Nguyen
- College of Engineering, IT & Environment, Charles Darwin University 0909 Australia
| | - Tran Van Hung
- Institute of Research and Development, Duy Tan University Danang 550000 Vietnam .,The Faculty of Environmental and Chemical Engineering, Duy Tan University Danang 550000 Vietnam
| | - Casen Panaitescu
- Department Engineering of Petroleum Processing and Environmental Protection, Petroleum-Gas University of Ploiesti 100680 Ploiesti Romania
| | - Nguyen Dang Nam
- Institute of Research and Development, Duy Tan University Danang 550000 Vietnam .,The Faculty of Environmental and Chemical Engineering, Duy Tan University Danang 550000 Vietnam
| |
Collapse
|
4
|
Sun J, Cai S, Li Q, Li Z, Xu G. UV-irradiation induced biological activity and antibacterial activity of ZnO coated magnesium alloy. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 114:110997. [PMID: 32994024 DOI: 10.1016/j.msec.2020.110997] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2020] [Revised: 03/26/2020] [Accepted: 04/20/2020] [Indexed: 11/19/2022]
Abstract
In order to improve the biological activity and antibacterial activity of magnesium alloy, the single zinc oxide (ZnO) coating was prepared on magnesium alloys using microwave aqueous synthesis method and followed heat treatment. Then, the coated magnesium alloys were irradiated with ultraviolet (UV) light for different time and subsequently immersed in simulated body fluids (SBF). The influences of UV-irradiated time on the morphology, composition, in vitro biological activity and antibacterial activity were investigated. The results indicated that the ability of the apatite formation on the ZnO coated magnesium alloys surface was significantly enhanced as UV irradiation time prolonged, and the bone-like apatite was formed after UV irradiation for 24 h and then immersing into SBF for 2 weeks, the newly formed apatite was dense and integrate, implying that UV irradiation could activate ZnO coating to improve the biological activity. Moreover, after immersing in SBF for 2 weeks, the antibacterial experiment results demonstrated that ZnO coated magnesium alloys with UV irradiation time of 24 h exhibited more effective antibacterial activity than those of naked magnesium alloys and ZnO coated magnesium alloys which were not irradiated by ultraviolet (UV) light. This work afforded a surface strategy for designing magnesium alloy implant with desirable osseointegration ability and antibacterial property simultaneously for orthopedic and dental applications.
Collapse
Affiliation(s)
- Jin'e Sun
- Tianjin College, Beijing University of Science and Technology, Tianjin 301800, China
| | - Shu Cai
- Key Laboratory for Advanced Ceramics and Machining Technology of Ministry of Education, Tianjin University, Tianjin 300072, China.
| | - Qianqian Li
- Key Laboratory for Advanced Ceramics and Machining Technology of Ministry of Education, Tianjin University, Tianjin 300072, China
| | - Zhaoyang Li
- Key Laboratory for Advanced Ceramics and Machining Technology of Ministry of Education, Tianjin University, Tianjin 300072, China
| | - Guohua Xu
- Department of Orthopedic Surgery, Changzheng Hospital, Second Military Medical University, Shanghai 200003, China.
| |
Collapse
|
5
|
Characterization and preparation of Fe3O4 nanoparticles loaded bioglass-chitosan nanocomposite coating on Mg alloy and in vitro bioactivity assessment. Int J Biol Macromol 2020; 151:519-528. [DOI: 10.1016/j.ijbiomac.2020.02.208] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Revised: 02/18/2020] [Accepted: 02/19/2020] [Indexed: 12/15/2022]
|
6
|
Kumar P, Saini M, Dehiya BS, Umar A, Sindhu A, Mohammed H, Al-Hadeethi Y, Guo Z. Fabrication and in-vitro biocompatibility of freeze-dried CTS-nHA and CTS-nBG scaffolds for bone regeneration applications. Int J Biol Macromol 2020; 149:1-10. [PMID: 31923516 DOI: 10.1016/j.ijbiomac.2020.01.035] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2019] [Revised: 01/02/2020] [Accepted: 01/04/2020] [Indexed: 12/12/2022]
Abstract
The thought of biodegradable organic-inorganic composites composed of natural polymer chitosan and ceramic nanoparticles (hydroxyapatite and bioglass) can be considered as a solution for hard tissue engineering. In this paper, we described a comparative assessment of chitosan-nanohydroxyapatite (CTS-nHA) and chitosan-nano-bioglass (CTS-nBG) scaffolds. The dispersion of nanoscaled hydroxyapatite (nHA) and bioglass (nBG) in chitosan remained satisfactory. The freeze-dried composite based CTS-nHA and CTS-nBG scaffolds shown porous structure. The physiochemical and morphological analysis of all samples has been performed through X-ray powder diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), Brunauer-Emmett-Teller (BET), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The SEM image confirmed the presence of spherically shaped nHA particles of 4.20 μm and irregularly shaped nBG particles of 6.89 μm. The TEM analysis revealed the existence of 165.52 to 255.17 nm sized nHA particles and 167.35 to 334.69 nm sized nBG particles. TEM analysis also showed the interconnected structure of CTS-nHA and CTS-nBG nanocomposites. After seven days' incubation period, the CTS-nHA and CTS-nBG scaffolds shown good mineralization behavior in simulated body fluid (SBF). The CTS-nHA scaffolds exhibited enhanced compressive strength and elastic modulus compared with the CTS-nBG sample. The cell culture experiment revealed that fabricated scaffolds had good compatibility with fibroblast cells (L929, ATCC) and MG-63 which are able to adhere, proliferate, and migrate through the porous structure. All the obtained results clearly recommend that pre-loaded hydroxyapatite and bioglass nanoparticles can enhance the apatite formation. The scaffolds with chitosan, bioglass, and hydroxyapatite have better biomechanical characteristics and allow cell growth. Therefore, these scaffolds can be perfect candidates for various hard tissue engineering applications such as bone regeneration.
Collapse
Affiliation(s)
- Pawan Kumar
- Department of Materials Science and Nanotechnology, Deenbandhu Chhotu Ram University of Science and Technology, Murthal, 131039, Haryana, India
| | - Meenu Saini
- Department of Materials Science and Nanotechnology, Deenbandhu Chhotu Ram University of Science and Technology, Murthal, 131039, Haryana, India
| | - Brijnandan S Dehiya
- Department of Materials Science and Nanotechnology, Deenbandhu Chhotu Ram University of Science and Technology, Murthal, 131039, Haryana, India.
| | - Ahmad Umar
- Department of Chemistry, Faculty of Science and Arts and Promising Centre for Sensors and Electronic Devices (PCSED), Najran University, Najran 11001, Saudi Arabia.
| | - Anil Sindhu
- Department of Biotechnology, Deenbandhu Chhotu Ram University of Science and Technology, Murthal, 131039, Haryana, India
| | - Hiba Mohammed
- Department of Health Sciences, Università del Piemonte Orientale UPO, 28100 Novara, Italy; Fondazione Novara Sviluppo, 28100 Novara, Italy
| | - Yas Al-Hadeethi
- Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Zhanhu Guo
- Integrated Composites Laboratory (ICL), Department of Chemical & Biomolecular Engineering, University of Tennessee, Knoxville, TN 37996, USA
| |
Collapse
|
7
|
|
8
|
Zhang M, Cai S, Zhang F, Xu G, Wang F, Yu N, Wu X. Preparation and corrosion resistance of magnesium phytic acid/hydroxyapatite composite coatings on biodegradable AZ31 magnesium alloy. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2017; 28:82. [PMID: 28424946 DOI: 10.1007/s10856-017-5876-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2016] [Accepted: 02/28/2017] [Indexed: 06/07/2023]
Abstract
In this work, a magnesium phytic acid/hydroxyapatite composite coating was successfully prepared on AZ31 magnesium alloy substrate by chemical conversion deposition technology with the aim of improving its corrosion resistance and bioactivity. The influence of hydroxyapatite (HA) content on the microstructure and corrosion resistance of the coatings was investigated. The results showed that with the increase of HA content in phytic acid solution, the cracks on the surface of the coatings gradually reduced, which subsequently improved the corrosion resistance of these coated magnesium alloy. Electrochemical measurements in simulated body fluid (SBF) revealed that the composite coating with 45 wt.% HA addition exhibited superior surface integrity and significantly improved corrosion resistance compared with the single phytic acid conversion coating. The results of the immersion test in SBF showed that the composite coating could provide more effective protection for magnesium alloy substrate than that of the single phytic acid coating and showed good bioactivity. Magnesium phytic acid/hydroxyapatite composite, with the desired bioactivity, can be synthesized through chemical conversion deposition technology as protective coatings for surface modification of the biodegradable magnesium alloy implants. The design idea of the new type of biomaterial is belong to the concept of "third generation biomaterial". Corrosion behavior and bioactivity of coated magnesium alloy are the key issues during implantation. In this study, preparation and corrosion behavior of magnesium phytic acid/hydroxyapatite composite coatings on magnesium alloy were studied. The basic findings and significance of this paper are as follows: 1. A novel environmentally friendly, homogenous and crack-free magnesium phytic acid/hydroxyapatite composite coating was fabricated on AZ31 magnesium alloy via chemical conversion deposition technology with the aim of enhancing its corrosion resistance and bioactivity. The chemical conversion coatings, which are formed through the reaction between the substrate and the environment, have attracted increasing attention owing to the relative low treatment temperature, favorable bonding to substrate and simple implementation process. 2. With the increasing of hydroxyapatite (HA) content, the crack width in the composite coatings and the thickness of the coatings exhibit obviously decreased. The reason is probably that when adding HA into the phytic acid solution, the amount of active hydroxyl groups in the phytic acid are reduced via forming the coordination bond between P-OH groups from phytic acid and P-OH groups from the surface of HA, thus decreasing the coating thickness and hydrogen formation, as well as avoiding coating cracking. 3. By adjusting the HA content to 45 wt.%, a dense and relatively smooth composite coating with ~1.4 μm thickness is obtained on magnesium alloy, and exhibits high corrosion resistance and good bioactivity when compared with the single phytic acid conversion coating.
Collapse
Affiliation(s)
- Min Zhang
- Key Laboratory for Advanced Ceramics and Machining Technology of Ministry of Education, Tianjin University, Tianjin, 300072, China
| | - Shu Cai
- Key Laboratory for Advanced Ceramics and Machining Technology of Ministry of Education, Tianjin University, Tianjin, 300072, China.
| | - Feiyang Zhang
- Key Laboratory for Advanced Ceramics and Machining Technology of Ministry of Education, Tianjin University, Tianjin, 300072, China
| | - Guohua Xu
- Shanghai Changzheng Hospital, Shanghai, 200003, China.
| | - Fengwu Wang
- Key Laboratory for Advanced Ceramics and Machining Technology of Ministry of Education, Tianjin University, Tianjin, 300072, China
| | - Nian Yu
- Key Laboratory for Advanced Ceramics and Machining Technology of Ministry of Education, Tianjin University, Tianjin, 300072, China
| | - Xiaodong Wu
- Shanghai Changzheng Hospital, Shanghai, 200003, China
| |
Collapse
|
9
|
Heise S, Virtanen S, Boccaccini AR. Tackling Mg alloy corrosion by natural polymer coatings-A review. J Biomed Mater Res A 2016; 104:2628-41. [PMID: 27159153 DOI: 10.1002/jbm.a.35776] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2016] [Revised: 05/04/2016] [Accepted: 05/04/2016] [Indexed: 01/02/2023]
Abstract
The field of protective coatings for magnesium and its alloys (e.g., AZ31) using natural polymers is reviewed. Polymers utilized are broadly divided into polysaccharides and proteins. For both polymer classes examples are given focusing on coating processing and characterization. Several analysing methods reported in literature are summarized highlighting the different characterization approaches applied in different studies, which makes difficult a direct comparison of the outcomes. In most cases, the protective behavior of coatings was determined using electrochemical impedance spectroscopy or by assessing hydrogen evolution in different fluids. Mechanical tests and in vitro cell culture studies have been also carried out on selected coating systems. Overall, the results show the possibility of applying protective coatings based on natural polymers on magnesium and its alloys, however, in vivo investigations are scarce so that long-term results in relevant conditions are not yet available. A comparison with the use of synthetic polymers is presented and current challenges and areas for future research are discussed, highlighting the need for further investigations in the field, which should enable broadening the applications of Mg and Mg alloys in medicine. © 2016 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 104A: 2628-2641, 2016.
Collapse
Affiliation(s)
- Svenja Heise
- Institute of Biomaterials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, Cauerstrasse 6, 91058 Erlangen, Germany
| | - Sannakaisa Virtanen
- Chair for Surface Science and Corrosion, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, Martensstraβe 5-7, 91058 Erlangen, Germany
| | - Aldo R Boccaccini
- Institute of Biomaterials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, Cauerstrasse 6, 91058 Erlangen, Germany
| |
Collapse
|
10
|
Córdoba A, Hierro-Oliva M, Pacha-Olivenza MÁ, Fernández-Calderón MC, Perelló J, Isern B, González-Martín ML, Monjo M, Ramis JM. Direct Covalent Grafting of Phytate to Titanium Surfaces through Ti-O-P Bonding Shows Bone Stimulating Surface Properties and Decreased Bacterial Adhesion. ACS APPLIED MATERIALS & INTERFACES 2016; 8:11326-11335. [PMID: 27088315 DOI: 10.1021/acsami.6b02533] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Myo-inositol hexaphosphate, also called phytic acid or phytate (IP6), is a natural molecule abundant in vegetable seeds and legumes. Among other functions, IP6 inhibits bone resorption. It is adsorbed on the surface of hydroxyapatite, inhibiting its dissolution and decreasing the progressive loss of bone mass. We present here a method to directly functionalize Ti surfaces covalently with IP6, without using a cross-linker molecule, through the reaction of the phosphate groups of IP6 with the TiO2 layer of Ti substrates. The grafting reaction consisted of an immersion in an IP6 solution to allow the physisorption of the molecules onto the substrate, followed by a heating step to obtain its chemisorption, in an adaptation of the T-Bag method. The reaction was highly dependent on the IP6 solution pH, only achieving a covalent Ti-O-P bond at pH 0. We evaluated two acidic pretreatments of the Ti surface, to increase its hydroxylic content, HNO3 30% and HF 0.2%. The structure of the coated surfaces was characterized by X-ray photoelectron spectroscopy, time-of-flight secondary ion mass spectrometry, and ellipsometry. The stability of the IP6 coating after three months of storage and after sterilization with γ-irradiation was also determined. Then, we evaluated the biological effect of Ti-IP6 surfaces in vitro on MC3T3-E1 osteoblastic cells, showing an osteogenic effect. Finally, the effect of the surfaces on the adhesion and biofilm viability of oral microorganisms S. mutans and S. sanguinis was also studied, and we found that Ti-IP6 surfaces decreased the adhesion of S. sanguinis. A surface that actively improves osseointegration while decreasing the bacterial adhesion could be suitable for use in bone implants.
Collapse
Affiliation(s)
- Alba Córdoba
- Group of Cell Therapy and Tissue Engineering, Research Institute on Health Sciences (IUNICS), University of Balearic Islands , Ctra. Valldemossa km 7.5, 07122 Palma de Mallorca, Spain
- Instituto de Investigación Sanitaria de Palma , 07010 Palma, España
| | - Margarita Hierro-Oliva
- Departamento de Física Aplicada, Facultad de Ciencias, Universidad de Extremadura , Badajoz, Spain
- Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN) , Madrid, Spain
| | - Miguel Ángel Pacha-Olivenza
- Departamento de Física Aplicada, Facultad de Ciencias, Universidad de Extremadura , Badajoz, Spain
- Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN) , Madrid, Spain
| | - María Coronada Fernández-Calderón
- Departamento de Física Aplicada, Facultad de Ciencias, Universidad de Extremadura , Badajoz, Spain
- Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN) , Madrid, Spain
| | - Joan Perelló
- Laboratoris Sanifit , ParcBIT, Palma de Mallorca, Spain
| | - Bernat Isern
- Laboratoris Sanifit , ParcBIT, Palma de Mallorca, Spain
| | - María Luisa González-Martín
- Departamento de Física Aplicada, Facultad de Ciencias, Universidad de Extremadura , Badajoz, Spain
- Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN) , Madrid, Spain
| | - Marta Monjo
- Group of Cell Therapy and Tissue Engineering, Research Institute on Health Sciences (IUNICS), University of Balearic Islands , Ctra. Valldemossa km 7.5, 07122 Palma de Mallorca, Spain
- Instituto de Investigación Sanitaria de Palma , 07010 Palma, España
| | - Joana M Ramis
- Group of Cell Therapy and Tissue Engineering, Research Institute on Health Sciences (IUNICS), University of Balearic Islands , Ctra. Valldemossa km 7.5, 07122 Palma de Mallorca, Spain
- Instituto de Investigación Sanitaria de Palma , 07010 Palma, España
| |
Collapse
|
11
|
Chen M, Chen Y, Zhang W, Zhao S, Wang J, Mao J, Li W, Zhao Y, Huang N, Wan G. Controlling the corrosion rate and behavior of biodegradable magnesium by a surface-immobilized ultrathin 1-hydroxyethylidene-1,1-diphosphonic acid (HEDP) film. RSC Adv 2016. [DOI: 10.1039/c5ra23228g] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
An ultra-thin organometallic-like layer was formed on pure magnesium to control the rate and manner of corrosion.
Collapse
|
12
|
Zhang F, Cai S, Xu G, Shen S, Li Y, Zhang M, Wu X. Corrosion behavior of mesoporous bioglass-ceramic coated magnesium alloy under applied forces. J Mech Behav Biomed Mater 2015; 56:146-155. [PMID: 26703229 DOI: 10.1016/j.jmbbm.2015.11.029] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Revised: 11/18/2015] [Accepted: 11/28/2015] [Indexed: 01/28/2023]
Abstract
In order to research the corrosion behavior of bioglass-ceramic coated magnesium alloys under applied forces, mesoporous 45S5 bioactive glass-ceramic (45S5 MBGC) coatings were successfully prepared on AZ31 substrates using a sol-gel dip-coating technique followed by a heat treatment at the temperature of 400°C. In this work, corrosion behavior of the coated samples under applied forces was characterized by electrochemical tests and immersion tests in simulated body fluid. Results showed that the glass-ceramic coatings lost the protective effects to the magnesium substrate in a short time when the applied compressive stress was greater than 25MPa, and no crystallized apatite was formed on the surface due to the high Mg(2+) releasing and the peeling off of the coatings. Whereas, under low applied forces, apatite deposition and crystallization on the coating surface repaired cracks to some extent, thus improving the corrosion resistance of the coated magnesium during the long-term immersion period.
Collapse
Affiliation(s)
- Feiyang Zhang
- Key Laboratory for Advanced Ceramics and Machining Technology of Ministry of Education, Tianjin University, Tianjin 300072, People׳s Republic of China
| | - Shu Cai
- Key Laboratory for Advanced Ceramics and Machining Technology of Ministry of Education, Tianjin University, Tianjin 300072, People׳s Republic of China.
| | - Guohua Xu
- Shanghai Changzheng Hospital, Shanghai 200003, People׳s Republic of China.
| | - Sibo Shen
- Key Laboratory for Advanced Ceramics and Machining Technology of Ministry of Education, Tianjin University, Tianjin 300072, People׳s Republic of China
| | - Yan Li
- Key Laboratory for Advanced Ceramics and Machining Technology of Ministry of Education, Tianjin University, Tianjin 300072, People׳s Republic of China
| | - Min Zhang
- Key Laboratory for Advanced Ceramics and Machining Technology of Ministry of Education, Tianjin University, Tianjin 300072, People׳s Republic of China
| | - Xiaodong Wu
- Shanghai Changzheng Hospital, Shanghai 200003, People׳s Republic of China
| |
Collapse
|
13
|
Shuai C, Zhou J, Wu P, Gao C, Feng P, Xiao T, Deng Y, Peng S. Enhanced Stability of Calcium Sulfate Scaffolds with 45S5 Bioglass for Bone Repair. MATERIALS (BASEL, SWITZERLAND) 2015; 8:7498-7510. [PMID: 28793652 PMCID: PMC5458930 DOI: 10.3390/ma8115398] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/01/2015] [Revised: 10/29/2015] [Accepted: 11/02/2015] [Indexed: 11/17/2022]
Abstract
Calcium sulfate (CaSO₄), as a promising tissue repair material, has been applied widely due to its outstanding bioabsorbability and osteoconduction. However, fast disintegration, insufficient mechanical strength and poor bioactivity have limited its further application. In the study, CaSO₄ scaffolds fabricated by using selective laser sintering were improved by adding 45S5 bioglass. The 45S5 bioglass enhanced stability significantly due to the bond effect of glassy phase between the CaSO₄ grains. After immersing for four days in simulated body fluid (SBF), the specimens with 45S5 bioglass could still retain its original shape compared as opposed to specimens without 45S5 bioglass who experienced disintegration. Meanwhile, its compressive strength and fracture toughness increased by 80% and 37%, respectively. Furthermore, the apatite layer was formed on the CaSO₄ scaffolds with 45S5 bioglass in SBF, indicating good bioactivity of the scaffolds. In addition, the scaffolds showed good ability to support the osteoblast-like cell adhesion and proliferation.
Collapse
Affiliation(s)
- Cijun Shuai
- State Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha 410083, China.
| | - Jianhua Zhou
- State Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha 410083, China.
| | - Ping Wu
- College of Chemistry, Xiangtan University, Xiangtan 411105, China.
| | - Chengde Gao
- State Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha 410083, China.
| | - Pei Feng
- State Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha 410083, China.
| | - Tao Xiao
- Department of Orthopedics, the Second Xiangya Hospital, Central South University, Changsha 410011, China.
| | - Youwen Deng
- Department of Orthopedics, the Second Xiangya Hospital, Central South University, Changsha 410011, China.
| | - Shuping Peng
- School of Basic Medical Science, Central South University, Changsha 410078, China.
- Hunan Provincial Tumor Hospital and the Affiliated Tumor Hospital of Xiangya School of Medicine, Central South University, Changsha 410013, China.
| |
Collapse
|