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Saracini J, de Assis ICM, Peiter GC, Busso C, de Oliveira RJ, Felix JF, Bini RA, Schneider R. Borophosphate glasses as active agents for antimicrobial hydrogels. Int J Pharm 2023; 644:123323. [PMID: 37597596 DOI: 10.1016/j.ijpharm.2023.123323] [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: 07/08/2023] [Revised: 08/11/2023] [Accepted: 08/14/2023] [Indexed: 08/21/2023]
Abstract
Herein we report the synthesis of transition-metal-free potassium borophosphate glasses and their application as bactericidal and bacteriostatic material. The antimicrobial activity was achieved through a simple change in the molar ratio of boron and phosphorus atoms, making borophosphate glass soluble in water. The glasses were analyzed by X-ray powder diffraction, Raman spectroscopy, laser-induced breakdown spectroscopy, and water absorption. The addition of a boron compound is required to obtain potassium-based phosphate glasses. Moreover, the change in the phosphorus and boron molar ratio (P/B), 2, 1 or 0.5 affects the glass solubilization in water, which increases with the phosphorus content. The glass materials were submitted to tests of biological activity against the bacteria Staphylococcus aureus, Escherichia coli, and Pseudomonas aeruginosa. These water-soluble borophosphate glasses were employed in the development of hydrogel formulations using Carbopol®. Phosphorous-rich samples at a concentration of 15 % (w/w) in hydrogel showed better antimicrobial activity against S. aureus and E. coli, when compared to other samples, including commercial alcohol hand sanitizer gel, with an average size of the inhibition halo of 24.02±1.43 and 19.24±1.63mm, respectively.
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Affiliation(s)
- Jaqueline Saracini
- Universidade Estadual do Oeste do Paraná, Centro de Engenharias e Ciências Exatas-CECE, 85903-000, Toledo, PR, Brazil
| | - Iago C M de Assis
- Federal University of Technology - Paraná, Group of Polymers and Nanostructures, 85902-490, Toledo, PR, Brazil
| | - Gabrielle Caroline Peiter
- Federal University of Technology - Paraná, Group of Polymers and Nanostructures, 85902-490, Toledo, PR, Brazil
| | - Cleverson Busso
- Federal University of Technology - Paraná, Group of Polymers and Nanostructures, 85902-490, Toledo, PR, Brazil
| | - Rodrigo J de Oliveira
- Universidade Estadual da Paraíba, Physical Chemistry of Materials Group, 58429-500, Campina Grande, PB, Brazil
| | - Jorlandio F Felix
- Universidade de Brasília, Instituto de Física-Núcleo de Física Aplicada, 70910-900, Brasília, DF, Brazil
| | - Rafael A Bini
- Federal University of Technology - Paraná, Group of Polymers and Nanostructures, 85902-490, Toledo, PR, Brazil
| | - Ricardo Schneider
- Universidade Estadual do Oeste do Paraná, Centro de Engenharias e Ciências Exatas-CECE, 85903-000, Toledo, PR, Brazil; Federal University of Technology - Paraná, Group of Polymers and Nanostructures, 85902-490, Toledo, PR, Brazil.
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2
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Kaou MH, Furkó M, Balázsi K, Balázsi C. Advanced Bioactive Glasses: The Newest Achievements and Breakthroughs in the Area. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2287. [PMID: 37630871 PMCID: PMC10459405 DOI: 10.3390/nano13162287] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 07/28/2023] [Accepted: 08/07/2023] [Indexed: 08/27/2023]
Abstract
Bioactive glasses (BGs) are especially useful materials in soft and bone tissue engineering and even in dentistry. They can be the solution to many medical problems, and they have a huge role in the healing processes of bone fractures. Interestingly, they can also promote skin regeneration and wound healing. Bioactive glasses are able to attach to the bone tissues and form an apatite layer which further initiates the biomineralization process. The formed intermediate apatite layer makes a connection between the hard tissue and the bioactive glass material which results in faster healing without any complications or side effects. This review paper summarizes the most recent advancement in the preparation of diverse types of BGs, such as silicate-, borate- and phosphate-based bioactive glasses. We discuss their physical, chemical, and mechanical properties detailing how they affect their biological performances. In order to get a deeper insight into the state-of-the-art in this area, we also consider their medical applications, such as bone regeneration, wound care, and dental/bone implant coatings.
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Affiliation(s)
- Maroua H. Kaou
- Centre for Energy Research, Institute of Technical Physics and Materials Science, Konkoly-Thege M. Str. 29-33, 1121 Budapest, Hungary; (M.H.K.); (M.F.); (K.B.)
- Doctoral School of Materials Science and Technologies, Óbuda University, Bécsi Str. 96/B, 1030 Budapest, Hungary
| | - Mónika Furkó
- Centre for Energy Research, Institute of Technical Physics and Materials Science, Konkoly-Thege M. Str. 29-33, 1121 Budapest, Hungary; (M.H.K.); (M.F.); (K.B.)
| | - Katalin Balázsi
- Centre for Energy Research, Institute of Technical Physics and Materials Science, Konkoly-Thege M. Str. 29-33, 1121 Budapest, Hungary; (M.H.K.); (M.F.); (K.B.)
| | - Csaba Balázsi
- Centre for Energy Research, Institute of Technical Physics and Materials Science, Konkoly-Thege M. Str. 29-33, 1121 Budapest, Hungary; (M.H.K.); (M.F.); (K.B.)
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3
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Sukul PP, Kumar K, Swart H. Erbium energy bridging upconversion mechanism studies on BAKL:Er3+/Yb3+ glass-ceramics and simultaneous enhancement of color purity of the green luminescence. Dalton Trans 2022; 51:2827-2839. [DOI: 10.1039/d1dt03918k] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Er3+–Er3+ ion energy bridging UC mechanism through an Yb3+ ion is responsible for efficient color tuning properties in a uniquely designed borate oxyflouride glass-ceramics matrix.
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Affiliation(s)
- Prasenjit Prasad Sukul
- Department of Physics, University of Free State, Bloemfontein 9300, Republic of South Africa
| | - Kaushal Kumar
- Optical Materials & Bio-imaging Research Laboratory, Department of Physics, Indian Institute of Technology (ISM), Dhanbad 826004, India
| | - Hendrik Swart
- Department of Physics, University of Free State, Bloemfontein 9300, Republic of South Africa
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4
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Gupta D, Hossain KMZ, Roe M, Smith EF, Ahmed I, Sottile V, Grant DM. Long-Term Culture of Stem Cells on Phosphate-Based Glass Microspheres: Synergistic Role of Chemical Formulation and 3D Architecture. ACS APPLIED BIO MATERIALS 2021; 4:5987-6004. [DOI: 10.1021/acsabm.1c00120] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Dhanak Gupta
- Wolfson Centre for Stem Cells, Tissue Engineering and Modelling (STEM), School of Medicine, University of Nottingham, Nottingham NG7 2RD, U.K
- Advanced Materials Research Group, Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, U.K
| | - Kazi M. Zakir Hossain
- Advanced Materials Research Group, Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, U.K
| | - Martin Roe
- Nanoscale & Microscale Research Centre, University of Nottingham, Nottingham NG7 2RD, U.K
| | - Emily F. Smith
- Nanoscale & Microscale Research Centre, University of Nottingham, Nottingham NG7 2RD, U.K
- School of Chemistry, University of Nottingham, Nottingham NG7 2RD, U.K
| | - Ifty Ahmed
- Advanced Materials Research Group, Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, U.K
| | - Virginie Sottile
- Wolfson Centre for Stem Cells, Tissue Engineering and Modelling (STEM), School of Medicine, University of Nottingham, Nottingham NG7 2RD, U.K
- Department of Molecular Medicine, University of Pavia, 27100 Pavia, Italy
| | - David M. Grant
- Advanced Materials Research Group, Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, U.K
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5
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Rawat J, Gupta PK, Pandit S, Prasad R, Pande V. Current perspectives on integrated approaches to enhance lipid accumulation in microalgae. 3 Biotech 2021; 11:303. [PMID: 34194896 DOI: 10.1007/s13205-021-02851-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Accepted: 05/19/2021] [Indexed: 11/30/2022] Open
Abstract
In recent years, research initiatives on renewable bioenergy or biofuels have been gaining momentum, not only due to fast depletion of finite reserves of fossil fuels but also because of the associated concerns for the environment and future energy security. In the last few decades, interest is growing concerning microalgae as the third-generation biofuel feedstock. The CO2 fixation ability and conversion of it into value-added compounds, devoid of challenging food and feed crops, make these photosynthetic microorganisms an optimistic producer of biofuel from an environmental point of view. Microalgal-derived fuels are currently being considered as clean, renewable, and promising sustainable biofuel. Therefore, most research targets to obtain strains with the highest lipid productivity and a high growth rate at the lowest cultivation costs. Different methods and strategies to attain higher biomass and lipid accumulation in microalgae have been extensively reported in the previous research, but there are fewer inclusive reports that summarize the conventional methods with the modern techniques for lipid enhancement and biodiesel production from microalgae. Therefore, the current review focuses on the latest techniques and advances in different cultivation conditions, the effect of different abiotic and heavy metal stress, and the role of nanoparticles (NPs) in the stimulation of lipid accumulation in microalgae. Techniques such as genetic engineering, where particular genes associated with lipid metabolism, are modified to boost lipid synthesis within the microalgae, the contribution of "Omics" in metabolic pathway studies. Further, the contribution of CRISPR/Cas9 system technique to the production of microalgae biofuel is also briefly described.
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Affiliation(s)
- Jyoti Rawat
- Department of Biotechnology, Sir J. C. Bose Technical Campus Bhimtal, Kumaun University, Nainital, Uttarakhand 263136 India
| | - Piyush Kumar Gupta
- Department of Life Sciences, School of Basic Sciences and Research, Sharda University, Knowledge Park III, Greater Noida, Uttar Pradesh 201310 India
| | - Soumya Pandit
- Department of Life Sciences, School of Basic Sciences and Research, Sharda University, Knowledge Park III, Greater Noida, Uttar Pradesh 201310 India
| | - Ram Prasad
- Department of Botany, Mahatma Gandhi Central University, Motihari, Bihar 845801 India
| | - Veena Pande
- Department of Biotechnology, Sir J. C. Bose Technical Campus Bhimtal, Kumaun University, Nainital, Uttarakhand 263136 India
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6
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Physico‐chemical, thermal, and mechanical properties of
PLA‐nHA
nanocomposites: Effect of glass fiber reinforcement. J Appl Polym Sci 2020. [DOI: 10.1002/app.49286] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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7
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Biomass and lipid induction strategies in microalgae for biofuel production and other applications. Microb Cell Fact 2019; 18:178. [PMID: 31638987 PMCID: PMC6805540 DOI: 10.1186/s12934-019-1228-4] [Citation(s) in RCA: 119] [Impact Index Per Article: 23.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Accepted: 10/04/2019] [Indexed: 11/20/2022] Open
Abstract
The use of fossil fuels has been strongly related to critical problems currently affecting society, such as: global warming, global greenhouse effects and pollution. These problems have affected the homeostasis of living organisms worldwide at an alarming rate. Due to this, it is imperative to look for alternatives to the use of fossil fuels and one of the relevant substitutes are biofuels. There are different types of biofuels (categories and generations) that have been previously explored, but recently, the use of microalgae has been strongly considered for the production of biofuels since they present a series of advantages over other biofuel production sources: (a) they don’t need arable land to grow and therefore do not compete with food crops (like biofuels produced from corn, sugar cane and other plants) and; (b) they exhibit rapid biomass production containing high oil contents, at least 15 to 20 times higher than land based oleaginous crops. Hence, these unicellular photosynthetic microorganisms have received great attention from researches to use them in the large-scale production of biofuels. However, one disadvantage of using microalgae is the high economic cost due to the low-yields of lipid content in the microalgae biomass. Thus, development of different methods to enhance microalgae biomass, as well as lipid content in the microalgae cells, would lead to the development of a sustainable low-cost process to produce biofuels. Within the last 10 years, many studies have reported different methods and strategies to induce lipid production to obtain higher lipid accumulation in the biomass of microalgae cells; however, there is not a comprehensive review in the literature that highlights, compares and discusses these strategies. Here, we review these strategies which include modulating light intensity in cultures, controlling and varying CO2 levels and temperature, inducing nutrient starvation in the culture, the implementation of stress by incorporating heavy metal or inducing a high salinity condition, and the use of metabolic and genetic engineering techniques coupled with nanotechnology.
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8
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Mishra A, Ojansivu M, Autio R, Vanhatupa S, Miettinen S, Massera J. In-vitro dissolution characteristics and human adipose stem cell response to novel borophosphate glasses. J Biomed Mater Res A 2019; 107:2099-2114. [PMID: 31087776 DOI: 10.1002/jbm.a.36722] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Revised: 05/03/2019] [Accepted: 05/07/2019] [Indexed: 11/06/2022]
Abstract
The main drawbacks of traditional silicate bioactive glasses are their narrow hot forming domain and noncongruent dissolution. In this article, we report on new borophosphate glasses [xMn Om + (100 - x) (47.5P2 O5 + 2.5B2 O3 + 10Na2 O + 20CaO + 20SrO)], Mn Om being CuO, Ag2 O, and CeO2 , having high thermal processability, hence suitable for fiber drawing and sintering into scaffolds. Furthermore, the glasses dissolve congruently in simulated body fluid (SBF) and TRIS buffer solution, eventually leading to the precipitation of a reactive layer. Human adipose stem cells (hASC) were cultured in media enriched with glass extract at different dilutions, to investigate the optimal ion concentration for cell survival. Cells grew in all the extracts, except in the undiluted Cu-doped glass extract. At dilution 1:10, the lactate dehydrogenase (LDH) activity and cell proliferation were comparable to the control, while at 1:100, the cells proliferated faster than the control. Thus, the reference (undoped), Ag and Ce-doped glasses were found to be suitable for cell viability and proliferation. Cytotoxicity assessments using the LDH assay indeed revealed the high cytotoxicity of the Cu extract. This raises questions about the use of Cu in bioactive glasses and its optimal concentration as a dopant.
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Affiliation(s)
- Ayush Mishra
- Laboratory of Biomaterials and Tissue Engineering, Faculty of Medicine and Health Technology and BioMediTech Institute, Tampere University, Tampere, Finland
| | - Miina Ojansivu
- Adult Stem Cell Group, Faculty of Medicine and Health Technology and BioMediTech, Tampere University, Finland
| | - Reija Autio
- Faculty of Social Sciences and BioMediTech, Tampere University, Tampere, Finland
| | - Sari Vanhatupa
- Adult Stem Cell Group, Faculty of Medicine and Health Technology and BioMediTech, Tampere University, Finland
| | - Susanna Miettinen
- Adult Stem Cell Group, Faculty of Medicine and Health Technology and BioMediTech, Tampere University, Finland.,Research, Development and Innovation Centre, Tampere University Hospital, Tampere, Finland
| | - Jonathan Massera
- Laboratory of Biomaterials and Tissue Engineering, Faculty of Medicine and Health Technology and BioMediTech Institute, Tampere University, Tampere, Finland
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9
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Sharmin N, Gu F, Ahmed I, Parsons AJ. Compositional dependency on dissolution rate and cytocompatibility of phosphate-based glasses: Effect of B 2O 3 and Fe 2O 3 addition. J Tissue Eng 2017; 8:2041731417744454. [PMID: 29276579 PMCID: PMC5734455 DOI: 10.1177/2041731417744454] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Accepted: 11/06/2017] [Indexed: 11/21/2022] Open
Abstract
The unique property of phosphate-based glasses and fibres to be completely dissolved in aqueous media is largely dependent on the glass composition. This article focuses on investigating the effect of replacing Na2O with 3 and 5 mol% Fe2O3 on cytocompatibility, thermal and dissolution properties of P2O5–CaO–Na2O–MgO–B2O3 glass system, where P2O5 content was fixed at 45 mol%. The effect of increasing Fe2O3 from 3 to 5 mol% on P2O5–CaO–Na2O–MgO glasses was also evaluated. The glass transition temperature, onset of crystallisation temperature and liquidus temperature were found to decrease with increasing Fe2O3 content and the addition of B2O3, while the thermal expansion values were found to decrease. The density of the glasses decreased with increasing Fe2O3 content. However, an increase in the density was observed by the addition of 5 mol% B2O3. The dissolution properties and mode of bulk glass and fibres were also examined which were found to decrease with increasing B2O3 and Fe2O3. However, it was found that the dissolution properties of the glasses containing both B2O3 and Fe2O3 were lower than only Fe2O3 containing glasses. The in vitro cell culture studies using human osteoblast like (MG63) cell lines revealed that the glasses containing both B2O3 and Fe2O3 maintained and showed higher cell viability as compared to the only Fe2O3 containing glasses. Glasses containing both B2O3 and Fe2O3 showed a pronounced effect on the dissolution rate of the glasses, which eventually improved the cytocompatibility properties of the glasses investigated.
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Affiliation(s)
- Nusrat Sharmin
- Department of Chemical and Environmental Engineering, Faculty of Science and Engineering, University of Nottingham Ningbo China, Ningbo, China.,Ningbo Nottingham International Academy for Marine Economy and Technology, University of Nottingham Ningbo China, Ningbo, China.,Ningbo Nottingham New Materials Institute, University of Nottingham Ningbo China, Ningbo, China
| | - Fu Gu
- Department of Chemical and Environmental Engineering, Faculty of Science and Engineering, University of Nottingham Ningbo China, Ningbo, China
| | - Ifty Ahmed
- Advanced Materials Research Group, Healthcare Technologies, Faculty of Engineering, University of Nottingham, Nottingham, UK
| | - Andrew J Parsons
- Composites Research Group, Healthcare Technologies, Faculty of Engineering, University of Nottingham, Nottingham, UK
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10
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Lu X, Li K, Xie Y, Huang L, Zheng X. Chemical stability and osteogenic activity of plasma-sprayed boron-modified calcium silicate-based coatings. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2016; 27:166. [PMID: 27663224 DOI: 10.1007/s10856-016-5781-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Accepted: 09/12/2016] [Indexed: 06/06/2023]
Abstract
In recent years, CaSiO3 bio-ceramic coatings have attracted great attention because of their good bioactivity. However, their high degradation rates in physiological environment restrict their practical applications. In this work, boron-modified CaSiO3 ceramic (Ca11Si4B2O22, B-CS) coating was developed on Ti substrates by plasma-spraying technique attempting to obtain enhanced chemical stability and osteogenic activity. The B-CS coating possessed significantly increased chemical stability due to the introduction of boron and consequently the modified crystal structure, while maintaining good bioactivity. Scanning electron microscope and immunofluorescence studies showed that better cellular adhesion and extinctive filopodia-like processes were observed on the B-CS coating. Compared with the pure CaSiO3 (CS) coating, the B-CS coating promoted MC3T3-E1 cells attachment and proliferation. In addition, enhanced collagen I (COL-I) secretion, alkaline phosphatase activity, and extracellular matrix mineralization levels were detected from the B-CS coating. According to RT-PCR results, notable up-regulation expressions of mineralized tissue-related genes, such as runt-related transcription factor 2 (Runx2), bone sialoprotein and osteocalcin, and bone morphogenetic protein 7 (BMP-7) were observed on the B-CS coating compared with the CS coating. The above results suggested that Ca11Si4B2O22 coatings possess excellent osteogenic activity and might be a promising candidate for orthopedic applications.
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Affiliation(s)
- Xiang Lu
- Key Laboratory of Inorganic Coating Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai, 200050, PR China
- University of Chinese Academy of Sciences, 19 Yuquan Road, Beijing, 100049, PR China
| | - Kai Li
- Key Laboratory of Inorganic Coating Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai, 200050, PR China.
| | - Youtao Xie
- Key Laboratory of Inorganic Coating Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai, 200050, PR China
| | - Liping Huang
- Key Laboratory of Inorganic Coating Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai, 200050, PR China
| | - Xuebin Zheng
- Key Laboratory of Inorganic Coating Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai, 200050, PR China.
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11
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Sharmin N, Hasan MS, Rudd CD, Boyd D, Werner-Zwanziger U, Ahmed I, Parsons AJ. Effect of boron oxide addition on the viscosity-temperature behaviour and structure of phosphate-based glasses. J Biomed Mater Res B Appl Biomater 2016; 105:764-777. [PMID: 26748481 DOI: 10.1002/jbm.b.33610] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2015] [Revised: 12/03/2015] [Accepted: 12/08/2015] [Indexed: 11/07/2022]
Abstract
In this study, nine phosphate-based glass formulations from the system P2 O5 -CaO-Na2 O-MgO-B2 O3 were prepared with P2 O5 content fixed as 40, 45 and 50 mol%, where Na2 O was replaced by 5 and 10 mol% B2 O3 and MgO and CaO were fixed to 24 and 16 mol%, respectively. The effect of B2 O3 addition on the viscosity-temperature behaviour, fragility index and structure of the glasses was investigated. The composition of the glasses was confirmed by ICP-AES. The viscosity-temperature behaviour of the glasses were measured using beam-bending and parallel -plate viscometers. The viscosity of the glasses investigated was found to shift to higher temperature with increasing B2 O3 content. The kinetic fragility parameter, m and F1/2 , estimated from the viscosity curve were found to decease with increasing B2 O3 content. The structural analysis was achieved by a combination of Fourier transform infrared spectroscopy and solid state nuclear magnetic resonance. 31 P solid-state magic-angle-spinning nuclear magnetic resonance (MAS-NMR) showed that the local structure of the glasses changes with increasing B2 O3 content. As B2 O3 was added to the glass systems, the phosphate connectivity increases as the as the Q1 units transforms into Q2 units. The 11 B NMR results confirmed the presence of tetrahedral boron (BO4 ) units for all the compositions investigated. Structural analysis indicates an increasing level of cross-linking with increasing B2 O3 content. Evidence of the presence of P-O-B bonds was also observed from the FTIR and 31 P NMR analysis. © 2016 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 105B: 764-777, 2017.
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Affiliation(s)
- Nusrat Sharmin
- Division of Materials, Mechanics and Structures, Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, United Kingdom
| | - Muhammad S Hasan
- Purac Biomaterials, 5150 N Royal Atlanta DR., Tucker, Georgia, 30084
| | - Chris D Rudd
- Division of Materials, Mechanics and Structures, Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, United Kingdom
| | - Daniel Boyd
- Department of Applied Oral Sciences, Faculty of Dentistry, Dalhousie University, Halifax, Nova Scotia, B3H 4R2, Canada
| | | | - Ifty Ahmed
- Division of Materials, Mechanics and Structures, Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, United Kingdom
| | - Andrew J Parsons
- Division of Materials, Mechanics and Structures, Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, United Kingdom
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12
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Zahid S, Shah AT, Jamal A, Chaudhry AA, Khan AS, Khan AF, Muhammad N, Rehman IU. Biological behavior of bioactive glasses and their composites. RSC Adv 2016. [DOI: 10.1039/c6ra07819b] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
This review summarizes current developments in improving the biological behavior of bioactive glasse and their composites.
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Affiliation(s)
- Saba Zahid
- Interdisciplinary Research Centre in Biomedical Materials
- COMSATS Institute of Information Technology
- Lahore
- Pakistan
| | - Asma Tufail Shah
- Interdisciplinary Research Centre in Biomedical Materials
- COMSATS Institute of Information Technology
- Lahore
- Pakistan
| | - Arshad Jamal
- Interdisciplinary Research Centre in Biomedical Materials
- COMSATS Institute of Information Technology
- Lahore
- Pakistan
| | - Aqif Anwar Chaudhry
- Interdisciplinary Research Centre in Biomedical Materials
- COMSATS Institute of Information Technology
- Lahore
- Pakistan
| | - Abdul Samad Khan
- Interdisciplinary Research Centre in Biomedical Materials
- COMSATS Institute of Information Technology
- Lahore
- Pakistan
| | - Ather Farooq Khan
- Interdisciplinary Research Centre in Biomedical Materials
- COMSATS Institute of Information Technology
- Lahore
- Pakistan
| | - Nawshad Muhammad
- Interdisciplinary Research Centre in Biomedical Materials
- COMSATS Institute of Information Technology
- Lahore
- Pakistan
| | - Ihtesham ur Rehman
- Department of Material Science and Engineering
- The Kroto Research Institute
- University of Sheffield
- Sheffield S3 7HQ
- UK
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13
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Sharmin N, Hasan MS, Parsons AJ, Rudd CD, Ahmed I. Cytocompatibility, mechanical and dissolution properties of high strength boron and iron oxide phosphate glass fibre reinforced bioresorbable composites. J Mech Behav Biomed Mater 2015; 59:41-56. [PMID: 26745720 DOI: 10.1016/j.jmbbm.2015.12.011] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2015] [Revised: 12/11/2015] [Accepted: 12/14/2015] [Indexed: 10/22/2022]
Abstract
In this study, Polylactic acid (PLA)/phosphate glass fibres (PGF) composites were prepared by compression moulding. Fibres produced from phosphate based glasses P2O5-CaO-MgO-Na2O (P45B0), P2O5-CaO-MgO-Na2O-B2O3 (P45B5), P2O5-CaO-MgO-Na2O-Fe2O3 (P45Fe3) and P2O5-CaO-MgO-Na2O-B2O3-Fe2O3 (P45B5Fe3) were used to reinforce the bioresorbable polymer PLA. Fibre mechanical properties and degradation rate were investigated, along with the mechanical properties, degradation and cytocompatibility of the composites. Retention of the mechanical properties of the composites was evaluated during degradation in PBS at 37°C for four weeks. The fibre volume fraction in the composite varied from 19 to 23%. The flexural strength values (ranging from 131 to 184MPa) and modulus values (ranging from 9.95 to 12.29GPa) obtained for the composites matched those of cortical bone. The highest flexural strength (184MPa) and modulus (12.29GPa) were observed for the P45B5Fe3 composite. After 28 days of immersion in PBS at 37°C, ~35% of the strength profile was maintained for P45B0 and P45B5 composites, while for P45Fe3 and P45B5Fe3 composites ~40% of the initial strength was maintained. However, the overall wet mass change of P45Fe3 and P45B5Fe3 remained significantly lower than that of the P45B0 and P45B5 composites. The pH profile also revealed that the P45B0 and P45B5 composites degraded quicker, correlating well with the degradation profile. From SEM analysis, it could be seen that after 28 days of degradation, the fibres in the fractured surface of P45B5Fe3 composites remain fairly intact as compared to the other formulations. The in vitro cell culture studies using MG63 cell lines revealed both P45Fe3 and P45B5Fe3 composites maintained and showed higher cell viability as compared to the P45B0 and P45B5 composites. This was attributed to the slower degradation rate of the fibres in P45Fe3 and P45B5Fe3 composites as compared with the fibres in P45B0 and P45B5 composites.
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Affiliation(s)
- Nusrat Sharmin
- Division of Materials, Mechanics and Structures, Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, UK.
| | - Muhammad S Hasan
- Purac Biomaterials, 5150 N Royal Atlanta DR. Tucker, GA 30084, USA
| | - Andrew J Parsons
- Division of Materials, Mechanics and Structures, Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, UK
| | - Chris D Rudd
- Division of Materials, Mechanics and Structures, Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, UK
| | - Ifty Ahmed
- Division of Materials, Mechanics and Structures, Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, UK.
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14
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Stuart BW, Gimeno-Fabra M, Segal J, Ahmed I, Grant DM. Degradation and Characterization of Resorbable Phosphate-Based Glass Thin-Film Coatings Applied by Radio-Frequency Magnetron Sputtering. ACS APPLIED MATERIALS & INTERFACES 2015; 7:27362-27372. [PMID: 26523618 DOI: 10.1021/acsami.5b08957] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Quinternary phosphate-based glasses of up to 2.67 μm, deposited by radio-frequency magnetron sputtering, were degraded in distilled water and phosphate-buffered saline (PBS) to investigate their degradation characteristics. Magnetron-sputtered coatings have been structurally compared to their compositionally equivalent melt-quenched bulk glass counterparts. The coatings were found to have structurally variable surfaces to melt-quenched glass such that the respective bridging oxygen to nonbridging oxygen bonds were 34.2% to 65.8% versus 20.5% to 79.5%, forming metaphosphate (PO3)(-) (Q(2)) versus less soluble (P2O7)(4-) (Q(1)) and (PO4)(3-) (Q(0)), respectively. This factor led to highly soluble coatings, exhibiting a t(1/2) degradation dependence in the first 2 h in distilled water, followed by a more characteristic linear profile because the subsequent layers were less soluble. Degradation was observed to preferentially occur, forming voids characteristic of pitting corrosion, which was confirmed by the use of a focused ion beam. Coating degradation in PBS precipitated a (PO3)(-) metaphosphate, an X-ray amorphous layer, which remained adherent to the substrate and seemingly formed a protective diffusion barrier, which inhibited further coating degradation. The implications are that while compositionally similar, sputter-deposited coatings and melt-quenched glasses are structurally dissimilar, most notably, with regard to the surface layer. This factor has been attributed to surface etching of the as-deposited coating layer during deposition and variation in the thermal history between the processes of magnetron sputtering and melt quenching.
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Affiliation(s)
- Bryan W Stuart
- Department of Mechanical, Materials and Manufacturing Engineering, University of Nottingham , Nottingham NG7 2RD, United Kingdom
| | - Miquel Gimeno-Fabra
- Department of Mechanical, Materials and Manufacturing Engineering, University of Nottingham , Nottingham NG7 2RD, United Kingdom
| | - Joel Segal
- Department of Mechanical, Materials and Manufacturing Engineering, University of Nottingham , Nottingham NG7 2RD, United Kingdom
| | - Ifty Ahmed
- Department of Mechanical, Materials and Manufacturing Engineering, University of Nottingham , Nottingham NG7 2RD, United Kingdom
| | - David M Grant
- Department of Mechanical, Materials and Manufacturing Engineering, University of Nottingham , Nottingham NG7 2RD, United Kingdom
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15
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Hermansen C, Youngman RE, Wang J, Yue Y. Structural and topological aspects of borophosphate glasses and their relation to physical properties. J Chem Phys 2015; 142:184503. [DOI: 10.1063/1.4919798] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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16
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Hasan MS, Werner-Zwanziger U, Boyd D. Composition-structure-properties relationship of strontium borate glasses for medical applications. J Biomed Mater Res A 2014; 103:2344-54. [PMID: 25366812 DOI: 10.1002/jbm.a.35361] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2014] [Revised: 10/15/2014] [Accepted: 10/22/2014] [Indexed: 11/06/2022]
Abstract
We have synthesized TiO2 doped strontium borate glasses, 70B2O3-(30-x)SrO-xTiO2 and 70B2 O3 -20SrO(10-x)Na2 O-xTiO2 . The composition dependence of glass structure, density, thermal properties, durability, and cytotoxicity of degradation products was studied. Digesting the glass in mineral acid and detecting the concentrations of various ions using an ICP provided the actual compositions that were 5-8% deviated from the theoretical values. The structure was investigated by means of (11)B magic angle spinning (MAS) NMR spectroscopy. DSC analyses provided the thermal properties and the degradation rates were measured by measuring the weight loss of glass disc-samples in phosphate buffered saline at 37°C in vitro. Finally, the MTT assay was used to analyze the cytotoxicity of the degradation products. The structural analysis revealed that replacing TiO2 for SrO or Na2 O increased the BO3/BO4 ratio suggesting the network-forming role of TiO2 . Thermal properties, density, and degradation rates also followed the structural changes. Varying SrO content predominantly controlled the degradation rates, which in turn controlled the ion release kinetics. A reasonable control (2-25% mass loss in 21 days) over mass loss was achieved in current study. Even though, very high concentrations (up to 5500 ppm B, and 1200 ppm Sr) of ions were released from the ternary glass compositions that saturated the degradation media in 7 days, the degradation products from ternary glass system was found noncytotoxic. However, quaternary glasses demonstrated negative affect on cell viability due to very high (7000 ppm) Na ion concentration. All the glasses investigated in current study are deemed fast degrading with further control over degradation rates, release kinetics desirable.
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Affiliation(s)
- Muhammad S Hasan
- Department of Applied Oral Sciences, School of Biomedical Engineering, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Ulrike Werner-Zwanziger
- Department of Chemistry and Institute for Research in Materials, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Daniel Boyd
- Department of Applied Oral Sciences, School of Biomedical Engineering, Dalhousie University, Halifax, Nova Scotia, Canada
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17
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Liu X, Grant DM, Palmer G, Parsons AJ, Rudd CD, Ahmed I. Magnesium coated phosphate glass fibers for unidirectional reinforcement of polycaprolactone composites. J Biomed Mater Res B Appl Biomater 2014; 103:1424-32. [DOI: 10.1002/jbm.b.33324] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2014] [Revised: 09/05/2014] [Accepted: 10/26/2014] [Indexed: 11/11/2022]
Affiliation(s)
- Xiaoling Liu
- Division of Materials; Mechanics and Structures; Faculty of Engineering; University of Nottingham; Nottingham NG7 2RD UK
| | - David M. Grant
- Division of Materials; Mechanics and Structures; Faculty of Engineering; University of Nottingham; Nottingham NG7 2RD UK
| | - Graham Palmer
- Biomaterials and Tissue Engineering; Eastman Dental Institute; University College London; 256 Gray's Inn Road London WC1X 8LD UK
| | - Andrew J. Parsons
- Division of Materials; Mechanics and Structures; Faculty of Engineering; University of Nottingham; Nottingham NG7 2RD UK
| | - Chris D. Rudd
- Division of Materials; Mechanics and Structures; Faculty of Engineering; University of Nottingham; Nottingham NG7 2RD UK
| | - Ifty Ahmed
- Division of Materials; Mechanics and Structures; Faculty of Engineering; University of Nottingham; Nottingham NG7 2RD UK
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18
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Sharmin N, Parsons AJ, Rudd CD, Ahmed I. Effect of boron oxide addition on fibre drawing, mechanical properties and dissolution behaviour of phosphate-based glass fibres with fixed 40, 45 and 50 mol% P2O5. J Biomater Appl 2014; 29:639-53. [PMID: 24939962 PMCID: PMC4230965 DOI: 10.1177/0885328214539824] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Previous studies investigating manufacture of phosphate-based glass fibres from glasses fixed with P2O5 content less than 50 mol% showed that continuous manufacture without breakage was very difficult. In this study, nine phosphate-based glass formulations from the system P2O5-CaO-Na2O-MgO-B2O3 were prepared with P2O5 contents fixed at 40, 45 and 50 mol%, where Na2O was replaced by 5 and 10 mol% B2O3 and MgO and CaO were fixed to 24 and 16 mol%, respectively. The effect of B2O3 addition on the fibre drawing, fibre mechanical properties and dissolution behaviour was investigated. It was found that addition of 5 and 10 mol% B2O3 enabled successful drawing of continuous fibres from glasses with phosphate (P2O5) contents fixed at 40, 45 and 50 mol%. The mechanical properties of the fibres were found to significantly increase with increasing B2O3 content. The highest tensile strength (1200 ± 130 MPa) was recorded for 45P2O5-16CaO-5Na2O-24MgO-10B2O3 glass fibres. The fibres were annealed, and a comparison of the mechanical properties and mode of degradation of annealed and non-annealed fibres were investigated. A decrease in tensile strength and an increase in tensile modulus were observed for the annealed fibres. An assessment of the change in mechanical properties of both the annealed and non-annealed fibres was performed in phosphate-buffered saline (PBS) at 37℃ for 28 and 60 days, respectively. Initial loss of mechanical properties due to annealing was found to be recovered with degradation. The B2O3-containing glass fibres were found to degrade at a much slower rate as compared to the non-B2O3-containing fibres. Both annealed and non-annealed fibres exhibited a peeling effect of the fibre's outer layer during degradation.
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Affiliation(s)
- Nusrat Sharmin
- Division of Materials, Mechanics and Structures, University of Nottingham, Nottingham, UK
| | - Andrew J Parsons
- Division of Materials, Mechanics and Structures, University of Nottingham, Nottingham, UK
| | - Chris D Rudd
- Division of Materials, Mechanics and Structures, University of Nottingham, Nottingham, UK
| | - Ifty Ahmed
- Division of Materials, Mechanics and Structures, University of Nottingham, Nottingham, UK
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