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Kaimonov MR, Safronova TV. Materials in the Na 2O-CaO-SiO 2-P 2O 5 System for Medical Applications. MATERIALS (BASEL, SWITZERLAND) 2023; 16:5981. [PMID: 37687671 PMCID: PMC10488989 DOI: 10.3390/ma16175981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 07/29/2023] [Accepted: 08/07/2023] [Indexed: 09/10/2023]
Abstract
Calcium phosphate materials and materials based on silicon dioxide have been actively studied for more than 50 years due to their high biocompatibility and bioactivity. Hydroxyapatite and tricalcium phosphate are the most known among calcium phosphate materials, and Bioglass 45S5 is the most known material in the Na2O-CaO-SiO2-P2O5 system. Each of these materials has its application limits; however, some of them can be eliminated by obtaining composites based on calcium phosphate and bioglass. In this article, we provide an overview of the role of silicon and its compounds, including Bioglass 45S5, consider calcium phosphate materials, talk about the limits of each material, demonstrate the potential of the composites based on them, and show the other ways of obtaining composite ceramics in the Na2O-CaO-SiO2-P2O5 system.
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Affiliation(s)
- Maksim R. Kaimonov
- Department of Materials Science, Lomonosov Moscow State University, Leninskie Gory 1, Building 73, 119991 Moscow, Russia
| | - Tatiana V. Safronova
- Department of Materials Science, Lomonosov Moscow State University, Leninskie Gory 1, Building 73, 119991 Moscow, Russia
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory 1, Building 3, 119991 Moscow, Russia
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2
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Abd El-Aziz AM, Serag E, Kenawy MY, El-Maghraby A, Kandil SH. Hydrothermally reinforcing hydroxyaptatite and bioactive glass on carbon nanofiber scafold for bone tissue engineering. Front Bioeng Biotechnol 2023; 11:1170097. [PMID: 37292092 PMCID: PMC10245555 DOI: 10.3389/fbioe.2023.1170097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Accepted: 05/09/2023] [Indexed: 06/10/2023] Open
Abstract
As a bone tissue engineering scaffold, the objective of this study was to design hierarchical bioceramics based on an electrospun composite of carbon nanofibers (CNF) reinforced with hydroxyapatite (HA) and bioactive glasses (BGs) nanoparticles. The performance of the nanofiber as a scaffold for bone tissue engineering was enhanced by reinforcing it with hydroxyapatite and bioactive glass nanoparticles through a hydrothermal process. The influence of HA and BGs on the morphology and biological properties of carbon nanofibers was examined. The prepared materials were evaluated for cytotoxicity in vitro using the water-soluble tetrazolium salt assay (WST-assay) on Osteoblast-like (MG-63) cells, and oste-ocalcin (OCN), alkaline phosphatase (ALP) activity, total calcium, total protein, and tar-trate-resistant acid phosphatase (TRAcP) were measured. The WST-1, OCN, TRAcP, total calcium, total protein, and ALP activity tests demonstrated that scaffolds reinforced with HA and BGs had excellent in vitro biocompatibility (cell viability and proliferation) and were suitable for repairing damaged bone by stimulating bioactivity and biomarkers of bone cell formation.
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Affiliation(s)
- Asmaa M. Abd El-Aziz
- Fabrication Technology Research Department, Advanced Technology and New Materials Research Institute (ATNMRI), City of Scientific Research and Technological Applications (SRTA-City), Alexandria, Egypt
| | - Eman Serag
- Marine Pollution Department, Environmental Division, National Institute of Oceanography and Fisheries, Alexandria, Egypt
| | - Marwa Y. Kenawy
- Fabrication Technology Research Department, Advanced Technology and New Materials Research Institute (ATNMRI), City of Scientific Research and Technological Applications (SRTA-City), Alexandria, Egypt
| | - Azza El-Maghraby
- Fabrication Technology Research Department, Advanced Technology and New Materials Research Institute (ATNMRI), City of Scientific Research and Technological Applications (SRTA-City), Alexandria, Egypt
| | - Sherif H. Kandil
- Department of Materials Science, Institute of Graduate Studies and Research, Alexandria University, Alexandria, Egypt
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Boosted ammonium production by single cobalt atom catalysts with high Faradic efficiencies. Proc Natl Acad Sci U S A 2022; 119:e2123450119. [PMID: 35858301 PMCID: PMC9303948 DOI: 10.1073/pnas.2123450119] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Efficient n = O bond activation is crucial for the catalytic reduction of nitrogen compounds, which is highly affected by the construction of active centers. In this study, n = O bond activation was achieved by a single-atom catalyst (SAC) with phosphorus anchored on a Co active center to form intermediate N-species for further hydrogenation and reduction. Unique phosphorus-doped discontinuous active sites exhibit better n = O activation performance than conventional N-cooperated single-atom sites, with a high Faradic efficiency of 92.0% and a maximum ammonia yield rate of 433.3 μg NH4·h-1·cm-2. This approach of constructing environmental sites through heteroatom modification significantly improves atom efficiency and will guide the design of future functional SACs with wide-ranging applications.
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Raman and XANES Spectroscopic Study of the Influence of Coordination Atomic and Molecular Environments in Biomimetic Composite Materials Integrated with Dental Tissue. NANOMATERIALS 2021; 11:nano11113099. [PMID: 34835863 PMCID: PMC8625886 DOI: 10.3390/nano11113099] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Revised: 11/11/2021] [Accepted: 11/15/2021] [Indexed: 12/18/2022]
Abstract
In this work, for the first time, the influence of the coordination environment as well as Ca and P atomic states on biomimetic composites integrated with dental tissue was investigated. Bioinspired dental composites were synthesised based on nanocrystalline calcium carbonate-substituted hydroxyapatite Ca4ICa6IIPO46−xCO3x+yOH2−y (nano-cHAp) obtained from a biogenic source and a set of polar amino acids that modelled the organic matrix. Biomimetic composites, as well as natural dental tissue samples, were investigated using Raman spectromicroscopy and synchrotron X-ray absorption near edge structure (XANES) spectroscopy. Molecular structure and energy structure studies revealed several important features related to the different calcium atomic environments. It was shown that biomimetic composites created in order to reproduce the physicochemical properties of dental tissue provide good imitation of molecular and electron energetic properties, including the carbonate anion CO32− and the atomic Ca/P ratio in nanocrystals. The features of the molecular structure of biomimetic composites are inherited from the nano-cHAp (to a greater extent) and the amino acid cocktail used for their creation, and are caused by the ratio between the mineral and organic components, which is similar to the composition of natural enamel and dentine. In this case, violation of the nano-cHAp stoichiometry, which is the mineral basis of the natural and bioinspired composites, as well as the inclusion of different molecular groups in the nano-cHAp lattice, do not affect the coordination environment of phosphorus atoms. The differences observed in the molecular and electron energetic structures of the natural enamel and dentine and the imitation of their properties by biomimetic materials are caused by rearrangement in the local environment of the calcium atoms in the HAp crystal lattice. The surface of the nano-cHAp crystals in the natural enamel and dentine involved in the formation of bonds with the organic matrix is characterised by the coordination environment of the calcium atom, corresponding to its location in the CaI position—that is, bound through common oxygen atoms with PO4 tetrahedrons. At the same time, on the surface of nano-cHAp crystals in bioinspired dental materials, the calcium atom is characteristically located in the CaII position, bound to the hydroxyl OH group. The features detected in the atomic and molecular coordination environment in nano-cHAp play a fundamental role in recreating a biomimetic dental composite of the natural organomineral interaction in mineralised tissue and will help to find an optimal way to integrate the dental biocomposite with natural tissue.
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Awad K, Boyes NG, Iqbal R, Ahmed M, Mohamed A, Aswath P, Tomczak CR, Varanasi V. Hepatocyte growth factor administration increases bone soluble phosphate and alters bone chemical structure in diabetic hypertensive rats. JOURNAL OF MATERIALS RESEARCH 2021; 36:3936-3951. [PMID: 34992330 PMCID: PMC8725793 DOI: 10.1557/s43578-021-00300-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2021] [Accepted: 07/06/2021] [Indexed: 06/14/2023]
Abstract
Hepatocyte growth factor (HGF) is a novel potential therapy for improving bone health in patients with type II diabetes and hypertension, but its effect on the bone molecular structure is not revealed yet. Here, X-ray absorption near edge structure (XANES) spectroscopy was used to explore the effects elicited by HGF on the bone chemical structure. This study assessed local calcium (Ca) and phosphorus (P) coordination of diabetic hypertensive rat bones, each with and without HGF treatment. Results revealed that HGF has significant effects on Ca and P coordination chemistry as confirmed by presence of more soluble phosphates in the HGT-treated groups. Data indicated that treated bones have a poorly developed phosphate structure as evidenced by drastic drop in post-edge shoulder in P L2,3-edge compared to diabetic hypertensive and diabetic control bone. Presence of soluble Ca and P, products of bone resorption, with HGF treatment suggests unbalanced bone resorption and formation.
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Affiliation(s)
- Kamal Awad
- Department of Materials Science and Engineering, College of Engineering, University of Texas at Arlington, Arlington, TX 76019, USA
- Bone-Muscle Research Center, College of Nursing & Health Innovation, University of Texas At Arlington, 655 W. Mitchell St., Box 19410, Arlington, TX 76019, USA
- Department of Ceramics and Building Materials, National Research Center, Dokki, Cairo 12622, Egypt
| | - Natasha G. Boyes
- College of Kinesiology, University of Saskatchewan, Saskatoon, SK, Canada
| | - Ramlah Iqbal
- College of Kinesiology, University of Saskatchewan, Saskatoon, SK, Canada
- Departments of Anatomy, Physiology, and Pharmacology, College of Medicine, University of Saskatchewan, Saskatoon, SK, Canada
| | - Mohamed Ahmed
- Departments of Anatomy, Physiology, and Pharmacology, College of Medicine, University of Saskatchewan, Saskatoon, SK, Canada
| | - Adel Mohamed
- Departments of Anatomy, Physiology, and Pharmacology, College of Medicine, University of Saskatchewan, Saskatoon, SK, Canada
| | - Pranesh Aswath
- Department of Materials Science and Engineering, College of Engineering, University of Texas at Arlington, Arlington, TX 76019, USA
| | - Corey R. Tomczak
- College of Kinesiology, University of Saskatchewan, Saskatoon, SK, Canada
| | - Venu Varanasi
- Department of Materials Science and Engineering, College of Engineering, University of Texas at Arlington, Arlington, TX 76019, USA
- Bone-Muscle Research Center, College of Nursing & Health Innovation, University of Texas At Arlington, 655 W. Mitchell St., Box 19410, Arlington, TX 76019, USA
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Rajabi A, Esmaeili A. Preparation of three-phase nanocomposite antimicrobial scaffold BCP/Gelatin/45S5 glass with drug vancomycin and BMP-2 loading for bone regeneration. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.125508] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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Jiang YY, Wang ZQ, Chen JT, Li J, Zhu YJ, Liu LJ, Guo XX, Hu YF, He SS, Wu J, Chen F, Sham TK. Tracking the interaction of drug molecules with individual mesoporous amorphous calcium phosphate/ATP nanocomposites - an X-ray spectromicroscopy study. Phys Chem Chem Phys 2020; 22:13108-13117. [PMID: 32490501 DOI: 10.1039/d0cp00797h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Adenosine triphosphate (ATP) biomolecules play critial roles in the biomineralization process during the formation of amorphous calcium phosphate composites (ACPC), and ACPC is an important drug carrier due to its significant advantages of biocompatibility and biodegradability. Hence, studying the behavior of ACPC nanodrug carriers is crucial to investigate the structural regulation of biomimetic minerals and calcium phosphate (CaP)-based drug delivery systems. However, it is difficult to probe these interactions using traditional characterization methods. In this paper, XANES analysis together with STXM successfully provided a method to reveal the interaction of ATP and drug molecules with individual mesoporous ACPC. We found that the adenosine and phosphate groups of ATP biomolecules coordinated with Ca2+ and played critical roles in the formation of ACPC; drug molecules with the -COOH groups were linked to Ca2+via carboxylic acid groups primarily by electrostatic interactions, and the N-containing ring structures within the drug molecules also coordinated with Ca2+.
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Affiliation(s)
- Ying-Ying Jiang
- Department of Orthopedic, Spinal Pain Research Institute, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, 200072, P. R. China.
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Colocho Hurtarte LC, Santana Amorim HC, Kruse J, Criginski Cezar J, Klysubun W, Prietzel J. A Novel Approach for the Quantification of Different Inorganic and Organic Phosphorus Compounds in Environmental Samples by P L 2,3-Edge X-ray Absorption Near-Edge Structure (XANES) Spectroscopy. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:2812-2820. [PMID: 32068384 DOI: 10.1021/acs.est.9b07018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Phosphorus (P) is an essential element for life on Earth, with an important and oftentimes unaccounted organic biogeochemical component. Current methods for the quantification of different organic P compounds in environmental samples (e.g., soils, sediments) are based on extraction techniques and often associated with incomplete P recovery or sample changes. In this study, we present a protocol for the quantification of different organic and inorganic P species in soils using synchrotron-based X-ray absorption near-edge structure (XANES) spectroscopy at the P L2,3-edge. Its accuracy and precision was evaluated by analyzing 40 standard mixtures composed of seven different inorganic and organic P compounds (with a mean of R2 = 0.85). In addition, we quantified the P species of two soils and two agro-industrial byproducts using P L2,3-edge XANES spectroscopy and the results were compared with those obtained by P K-edge XANES or 31P NMR spectroscopy. Using the P L2,3-edge, we identified different organic P species, including those not identified by the common P K-edge XANES. However, there is a consistent underestimation of organic polyphosphates. Overall, the application of P L2,3-edge XANES provides a higher level of information than by P K-edge XANES, although the ubiquitous use of this novel methodology is still limited to samples with a phosphorus content above 3 mg g-1.
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Affiliation(s)
- Luis Carlos Colocho Hurtarte
- Lehrstuhl für Bodenkunde, Research Department Ecology and Ecosystem Management, Technische Universität München, Emil-Ramann-Straße 2, 85354 Freising, Germany
| | - Helen Carla Santana Amorim
- Universidade Federal de Lavras, Departamento de Ciência do Solo, 1001 Av. Doutor Silvio Menicucci, Lavras, MG 37200-000, Brazil
| | - Jens Kruse
- Institute of Bio- and Geosciences, Agrosphere Institute (IBG-3), Forschungszentrum Jülich GmbH, Wilhelm Johnen Straße, 52425 Jülich, Germany
- Institute of Crop Science and Resource Conservation (INRES), Soil Science and Soil Ecology, University Bonn, Nussallee 13, 53115 Bonn, Germany
| | - Julio Criginski Cezar
- Laboratório Nacional de Luz Síncrotron (LNLS) -Centro Nacional de Pesquisa em Energia e Materiais (CNPEM), Campinas, SP 13083-971, Brazil
| | - Wantana Klysubun
- Synchrotron Light Research Institute, Muang District, 111 University Avenue, Nakhon Ratchasima 30000, Thailand
| | - Jörg Prietzel
- Lehrstuhl für Bodenkunde, Research Department Ecology and Ecosystem Management, Technische Universität München, Emil-Ramann-Straße 2, 85354 Freising, Germany
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Cebe T, Ahuja N, Monte F, Awad K, Vyavhare K, Aswath P, Huang J, Brotto M, Varanasi V. Novel 3D-printed methacrylated chitosan-laponite nanosilicate composite scaffolds enhance cell growth and biomineral formation in MC3T3 pre-osteoblasts. JOURNAL OF MATERIALS RESEARCH 2020; 35:58-75. [PMID: 35844898 PMCID: PMC9285673 DOI: 10.1557/jmr.2018.260] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
This study compared the effect of gelatin- and chitosan-based scaffolds on osteoblast biomineralization. These scaffolds have been modified using methacrylate and laponite nanosilicates to improve their mechanical strength and support osteoblast function. Scaffold materials were prepared to have the same compressive strength (14-15 MPa) such that differences in cell response would be isolated to differences in biopolymer chemistry. The materials were tested for rheological properties to optimize the bio-ink for successful 3D printing using a robocast-assisted deposition system. Osteoblasts were cultured on the surface of 3D-printed methacrylated chitosan-laponite (MAC-Lp), methacrylated gelatin-laponite (MAG-Lp), MAC, and MAG scaffolds. MAC-Lp scaffolds showed increased cell viability, cell growth, and biomineral formation as compared to MAG-Lp scaffolds. FTIR results showed the presence of higher biomineral phosphate and extracellular matrix (ECM) collagen-like amide formation on MAC-Lp scaffolds as compared to MAG-Lp scaffolds. MAC-Lp scaffolds showed increased density of ECM-like tissue from SEM analysis, stained mineral nodules from Alizarin staining, and the existence of Ca─P species evident by X-ray absorbance near edge structure analysis. In conclusion, MAC-Lp scaffolds enhanced osteoblast growth and biomineral formation as compared to MAG-Lp scaffolds.
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Affiliation(s)
- Tugba Cebe
- Department of Materials Science and Engineering, University of Texas at Arlington, Arlington, Texas 76019, USA
| | - Neelam Ahuja
- Department of Graduate Nursing, College of Nursing and Health Innovation, University of Texas at Arlington, Arlington, Texas 76019, USA
| | - Felipe Monte
- Department of Graduate Nursing, College of Nursing and Health Innovation, University of Texas at Arlington, Arlington, Texas 76019, USA
| | - Kamal Awad
- Department of Materials Science and Engineering, University of Texas at Arlington, Arlington, Texas 76019, USA; and Department of Refractories and Ceramics, National Research Centre, Giza 12622, Egypt
| | - Kimaya Vyavhare
- Department of Materials Science and Engineering, University of Texas at Arlington, Arlington, Texas 76019, USA
| | - Pranesh Aswath
- Department of Materials Science and Engineering, University of Texas at Arlington, Arlington, Texas 76019, USA
| | - Jian Huang
- Department of Graduate Nursing, College of Nursing and Health Innovation, University of Texas at Arlington, Arlington, Texas 76019, USA
| | - Marco Brotto
- Department of Graduate Nursing, College of Nursing and Health Innovation, University of Texas at Arlington, Arlington, Texas 76019, USA
| | - Venu Varanasi
- Department of Materials Science and Engineering, University of Texas at Arlington, Arlington, Texas 76019, USA; and Department of Graduate Nursing, College of Nursing and Health Innovation, University of Texas at Arlington, Arlington, Texas 76019, USA
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10
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Optimization of Data Processing Minimizes Impact of Self-Absorption on Phosphorus Speciation Results by P K-Edge XANES. SOIL SYSTEMS 2019. [DOI: 10.3390/soilsystems3030061] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Bulk soil phosphorus speciation by X-ray absorption spectroscopy (XAS) using fluorescence yield-mode measurements is an important tool for phosphorus research because of the low soil P contents. However, when measuring in fluorescence mode, increasing the concentration of the absorbing atom can dampen the XAS spectral features because of self-absorption and affect the linear combination (LC) fitting results. To reduce the self-absorption for samples of high P contents, thick boron nitride diluted samples are produced, yet the effects of self-absorption on P speciation results via LC fitting of P K-edge XANES spectroscopy, and the possible benefits of data processing optimization are unknown. Toward this end, we produced a series of ternary standard mixtures (calcium-iron-aluminum phosphates) and an example soil sample both diluted using boron nitride over a range from 1 to ~900 mmol kg−1 for the soil sample and up to ~6000 mmol kg−1 for the standard mixture. We show that by optimizing background subtraction and normalization values, consistent results with less than 10% error can be obtained for samples with up to 300 mmol kg−1 P. Our results highlight the applicability of optimized P K-edge XANES fitting across a wide range of concentrations encountered in natural environments.
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11
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Meng Y, Qiang W, Pang J. Fabrication and Microstructure of Laminated HAP⁻45S5 Bioglass Ceramics by Spark Plasma Sintering. MATERIALS 2019; 12:ma12030484. [PMID: 30720770 PMCID: PMC6384796 DOI: 10.3390/ma12030484] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/06/2019] [Revised: 02/02/2019] [Accepted: 02/03/2019] [Indexed: 01/09/2023]
Abstract
Hydroxyapatite (HAP) has excellent biocompatibility with living bone tissue and does not cause defensive body reactions, therefore, it has become one of the most widely used calcium phosphate materials in dental and medical fields. However, its poor mechanical properties have been a substantial challenge in the application of HAP for the replacement of load-bearing or large bone defects. Laminated HAP–45S5 bioglass ceramics composites were prepared by the spark plasma sintering (SPS) technique. The interface structures between the HAP and 45S5 bioglass layers and the mechanical properties of the laminated composites were investigated. It was demonstrated that there was mutual transfer and exchange of Ca and Na atoms at the interface between 45S5 bioglass/HAP laminated layers, which contributed considerably to the interfacial bonding. Due from the laminated structure and strong interface bonding, laminated HAP–45S5 bioglass is recommended for structural applications.
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Affiliation(s)
- Ye Meng
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China.
- National Demonstration Center for Experimental Materials Education, University of Science and Technology Beijing, Beijing 100083, China.
| | - Wenjiang Qiang
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China.
| | - Jingqin Pang
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China.
- National Demonstration Center for Experimental Materials Education, University of Science and Technology Beijing, Beijing 100083, China.
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12
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Sanz-Herrera JA, Soria L, Reina-Romo E, Torres Y, Boccaccini AR. Model of dissolution in the framework of tissue engineering and drug delivery. Biomech Model Mechanobiol 2018; 17:1331-1341. [PMID: 29789979 DOI: 10.1007/s10237-018-1029-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Accepted: 05/10/2018] [Indexed: 12/14/2022]
Abstract
Dissolution phenomena are ubiquitously present in biomaterials in many different fields. Despite the advantages of simulation-based design of biomaterials in medical applications, additional efforts are needed to derive reliable models which describe the process of dissolution. A phenomenologically based model, available for simulation of dissolution in biomaterials, is introduced in this paper. The model turns into a set of reaction-diffusion equations implemented in a finite element numerical framework. First, a parametric analysis is conducted in order to explore the role of model parameters on the overall dissolution process. Then, the model is calibrated and validated versus a straightforward but rigorous experimental setup. Results show that the mathematical model macroscopically reproduces the main physicochemical phenomena that take place in the tests, corroborating its usefulness for design of biomaterials in the tissue engineering and drug delivery research areas.
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Affiliation(s)
- J A Sanz-Herrera
- School of Engineering, University of Seville, Camino de los descubrimientos s/n, 41092, Seville, Spain.
| | - L Soria
- School of Engineering, University of Seville, Camino de los descubrimientos s/n, 41092, Seville, Spain
| | - E Reina-Romo
- School of Engineering, University of Seville, Camino de los descubrimientos s/n, 41092, Seville, Spain
| | - Y Torres
- School of Engineering, University of Seville, Camino de los descubrimientos s/n, 41092, Seville, Spain
| | - A R Boccaccini
- Institute of Biomaterials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, Erlangen, Germany
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13
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Petrova OV, Nekipelov SV, Sivkov DV, Mingaleva AE, Nikolaev A, Frank-Kamenetskaya OV, Bazhenov VV, Vyalikh DV, Molodtsov SL, Sivkov VN, Ehrlich H. Comparative NEXAFS study of the selected icefish hard tissues and hydroxyapatite. ACTA ACUST UNITED AC 2017. [DOI: 10.1088/1742-6596/917/4/042001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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14
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Varanasi VG, Ilyas A, Velten MF, Shah A, Lanford WA, Aswath PB. Role of Hydrogen and Nitrogen on the Surface Chemical Structure of Bioactive Amorphous Silicon Oxynitride Films. J Phys Chem B 2017; 121:8991-9005. [PMID: 28825836 PMCID: PMC6542473 DOI: 10.1021/acs.jpcb.7b05885] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Silicon oxynitride (Si-O-N) is a new biomaterial in which its O/N ratio is tunable for variable Si release and its subsequent endocytotic incorporation into native hydroxyapatite for enhanced bone healing. However, the effect of nitrogen and hydrogen bonding on the formation and structure of hydroxyapatite is unclear. This study aims to uncover the roles of H and N in tuning Si-O-N surface bioactivity for hydroxyapatite formation. Conformal Si-O-N films were fabricated by plasma-enhanced chemical vapor deposition (PECVD) onto Ti/Si substrates. Fourier transform infrared spectroscopy (FTIR) and Rutherford backscattering spectrometry (RBS) analysis indicated increased Si-H and N-H bonding with increased N content. Surface energy decreased with increased N content. X-ray absorbance near edge structure (XANES) analysis showed tetrahedral coordination in O-rich films and trigonal coordination in N-rich films. O-rich films exhibited a 1:1 ratio of 2p3/2 to 2p1/2 electron absorbance, while this ratio was 1.73:1 for N-rich films. Both Si and N had a reduced partial charge for both O- and N-rich films, whereas O maintained its partial charge for either film. O-rich films were found to exhibit random bonding SizOxNy, while N-rich films exhibited random mixing: [Si-Si]-[Si-O]-[Si-N]. Thus, hydrogen bonding limits random nitrogen bonding in Si-O-N films via surface Si-H and N-H bonding. Moreover, increased nitrogen content reduces the partial charge of constituent elements and changes the bonding structure from random bonding to random mixing.
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Affiliation(s)
- Venu G Varanasi
- Department of Biomedical Sciences, Texas A&M Health Science Center, College of Dentistry , Dallas, Texas 75246, United States
| | - Azhar Ilyas
- Department of Electrical and Computer Engineering, New York Institute of Technology , Old Westbury, New York, 11568, United States
| | - Megen F Velten
- Materials Science and Engineering Department, University of Texas at Arlington , Arlington, Texas 76019, United States
| | - Ami Shah
- Materials Science and Engineering Department, University of Texas at Arlington , Arlington, Texas 76019, United States
| | - William A Lanford
- Physics Department, University at Albany SUNY , 1400 Washington Avenue, Albany, New York 12222, United States
| | - Pranesh B Aswath
- Materials Science and Engineering Department, University of Texas at Arlington , Arlington, Texas 76019, United States
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15
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Rizwan M, Hamdi M, Basirun WJ. Bioglass® 45S5-based composites for bone tissue engineering and functional applications. J Biomed Mater Res A 2017; 105:3197-3223. [DOI: 10.1002/jbm.a.36156] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Revised: 07/02/2017] [Accepted: 07/03/2017] [Indexed: 12/13/2022]
Affiliation(s)
- M. Rizwan
- Department of Mechanical Engineering; Faculty of Engineering, University of Malaya; Kuala Lumpur 50603 Malaysia
- Department of Metallurgical Engineering; Faculty of Chemical and Process Engineering, NED University of Engineering and Technology; Karachi 75270 Pakistan
| | - M. Hamdi
- Center of Advanced Manufacturing and Material Processing, University of Malaya; Kuala Lumpur 50603 Malaysia
| | - W. J. Basirun
- Department of Chemistry; Faculty of Science, University of Malaya; Kuala Lumpur 50603 Malaysia
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16
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Ilyas A, Odatsu T, Shah A, Monte F, Kim HKW, Kramer P, Aswath PB, Varanasi VG. Amorphous Silica: A New Antioxidant Role for Rapid Critical-Sized Bone Defect Healing. Adv Healthc Mater 2016; 5:2199-213. [PMID: 27385056 PMCID: PMC6635139 DOI: 10.1002/adhm.201600203] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Revised: 05/25/2016] [Indexed: 12/23/2022]
Abstract
Traumatic fractures cause structurally unstable sites due to severe bone loss. Such fractures generate a high yield of reactive oxygen species (ROS) that can lead to oxidative stress. Excessive and prolonged ROS activity impedes osteoblast differentiation and instigates long healing times. Stimulation of antioxidants such as superoxide dismutase (SOD1), are crucial to reduce ROS, stimulate osteogenesis, and strengthen collagen and mineral formation. Yet, no current fixative devices have shown an ability to enhance collagen matrix formation through antioxidant expression. This study reports plasma-enhanced chemical vapor deposition based amorphous silicon oxynitride (Si(ON)x) as a potential new fracture healing biomaterial that adheres well to the implant surface, releases Si(+4) to enhance osteogenesis, and forms a surface hydroxyapatite for collagen mineral attachment. These materials provide a sustained release of Si(+4) in physiological environment for extended times. The dissolution rate partially depends on the film chemistry and can be controlled by varying O/N ratio. The presence of Si(+4) enhances SOD1, which stimulates other osteogenic markers downstream and leads to rapid mineral formation. In vivo testing using a rat critical-sized calvarial defect model shows a more rapid bone-regeneration for these biomaterials as compared to control groups, that implies the clinical significance of the presented biomaterial.
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Affiliation(s)
- Azhar Ilyas
- Department of Biomedical Sciences, Texas A&M University, Baylor College of Dentistry, Dallas, TX, 75246, USA
| | - Tetsuro Odatsu
- Department of Biomedical Sciences, Texas A&M University, Baylor College of Dentistry, Dallas, TX, 75246, USA
- Department of Applied Prosthodontics, Graduate School of Biomedical Sciences, Nagasaki University, 1-7-1, Sakamoto, Nagasaki, 852-8588, Japan
| | - Ami Shah
- Department of Materials Science and Engineering, University of Texas at Arlington, Arlington, TX, 76019, USA
| | - Felipe Monte
- Department of Bioengineering, University of Texas at Arlington, Arlington, TX, 76019, USA
- Center for Excellence in Hip Disorders, Texas Scottish Rite Hospital, Dallas, TX, 75219, USA
| | - Harry K W Kim
- Center for Excellence in Hip Disorders, Texas Scottish Rite Hospital, Dallas, TX, 75219, USA
- Department of Orthopaedic Surgery, University of Texas Southwestern Medical Center at Dallas, Dallas, TX, 75390, USA
| | - Philip Kramer
- Department of Biomedical Sciences, Texas A&M University, Baylor College of Dentistry, Dallas, TX, 75246, USA
| | - Pranesh B Aswath
- Department of Materials Science and Engineering, University of Texas at Arlington, Arlington, TX, 76019, USA
| | - Venu G Varanasi
- Department of Biomedical Sciences, Texas A&M University, Baylor College of Dentistry, Dallas, TX, 75246, USA.
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17
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Bellucci D, Sola A, Cannillo V. Hydroxyapatite and tricalcium phosphate composites with bioactive glass as second phase: State of the art and current applications. J Biomed Mater Res A 2015; 104:1030-56. [DOI: 10.1002/jbm.a.35619] [Citation(s) in RCA: 78] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2015] [Revised: 12/01/2015] [Accepted: 12/01/2015] [Indexed: 12/23/2022]
Affiliation(s)
- Devis Bellucci
- Department of Engineering “E. Ferrari,”; University of Modena and Reggio Emilia; via P. Vivarelli 10 Modena 41125 Italy
| | - Antonella Sola
- Department of Engineering “E. Ferrari,”; University of Modena and Reggio Emilia; via P. Vivarelli 10 Modena 41125 Italy
| | - Valeria Cannillo
- Department of Engineering “E. Ferrari,”; University of Modena and Reggio Emilia; via P. Vivarelli 10 Modena 41125 Italy
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18
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Maginot M, Lin S, Liu Y, Yuan B, Feng JQ, Aswath PB. The in vivo role of DMP-1 and serum phosphate on bone mineral composition. Bone 2015; 81:602-613. [PMID: 26303287 DOI: 10.1016/j.bone.2015.08.018] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2015] [Revised: 08/16/2015] [Accepted: 08/19/2015] [Indexed: 01/07/2023]
Abstract
Human DMP1 mutations or Dmp1-null (KO) mice display hypophosphatemia rickets, suggesting a causative role of low phosphate (P) in development of osteomalacia. To address the direct contribution of P to the in vivo bone mineralization we analyzed the properties of femurs obtained from Dmp1 null mice and wild type (WT) mice under a normal or high phosphorous (HiP) diet using combined assays, including histological examination, micro computed tomography (μCT), X-ray absorption near edge structure (XANES) spectroscopy and Raman spectroscopy. Histology and XANES indicate that WT mice have phosphate coordinated with Ca in the form of hydroxyapatite and tricalcium phosphate, while the KO mice have poorly coordinated soluble phosphates in their structure in both the normal and HiP diets. Raman spectroscopy and XANES indicate a higher carbonate/phosphate ratio and a low mineral/matrix ratio in the osteoid clusters in the KO femurs, which was only partially improved by HiP diets. Thus, we conclude that the hypophosphatemia induced osteomalacia phenotype in Dmp1 KO mice is contributed by at least two factors: the low Pi level and the DMP1 local function in mineralization.
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Affiliation(s)
- Megen Maginot
- Materials Science and Engineering Department, University of Texas at Arlington, Arlington, TX 76019, United States
| | - Shuxian Lin
- Department of Biomedical Sciences, Texas A&M Health Science Center, Baylor College of Dentistry, Dallas TX 75246, United States
| | - Ying Liu
- Department of Biomedical Sciences, Texas A&M Health Science Center, Baylor College of Dentistry, Dallas TX 75246, United States
| | - Baozhi Yuan
- School of Medicine and Public Health, Univ. Wisconsin, Madison, WI 53715, United States
| | - Jian Q Feng
- Department of Biomedical Sciences, Texas A&M Health Science Center, Baylor College of Dentistry, Dallas TX 75246, United States
| | - Pranesh B Aswath
- Materials Science and Engineering Department, University of Texas at Arlington, Arlington, TX 76019, United States.
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19
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Guo X, Wang Z, Wu J, Yiu YM, Hu Y, Zhu YJ, Sham TK. Tracking Drug Loading Capacities of Calcium Silicate Hydrate Carrier: A Comparative X-ray Absorption Near Edge Structures Study. J Phys Chem B 2015; 119:10052-9. [DOI: 10.1021/acs.jpcb.5b04115] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xiaoxuan Guo
- Department
of Chemistry, University of Western Ontario, London, Ontario N6A 5B7, Canada
| | - Zhiqiang Wang
- Department
of Chemistry, University of Western Ontario, London, Ontario N6A 5B7, Canada
| | - Jin Wu
- Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
| | - Yun-Mui Yiu
- Department
of Chemistry, University of Western Ontario, London, Ontario N6A 5B7, Canada
| | - Yongfeng Hu
- Canadian Light Source, Saskatoon, Saskatchewan S7N 2V3, Canada
| | - Ying-Jie Zhu
- Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
| | - Tsun-Kong Sham
- Department
of Chemistry, University of Western Ontario, London, Ontario N6A 5B7, Canada
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20
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Ilyas A, Lavrik NV, Kim HK, Aswath PB, Varanasi VG. Enhanced interfacial adhesion and osteogenesis for rapid "bone-like" biomineralization by PECVD-based silicon oxynitride overlays. ACS APPLIED MATERIALS & INTERFACES 2015; 7:15368-15379. [PMID: 26095187 PMCID: PMC6508966 DOI: 10.1021/acsami.5b03319] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Structurally unstable fracture sites require metal fixative devices, which have long healing times due to their lack of osteoinductivity. Bioactive glass coatings lack in interfacial bonding, delaminate, and have reduced bioactivity due to the high temperatures used for their fabrication. Here, we test the hypothesis that low-temperature PECVD amorphous silica can enhance adhesion to the underlying metal surface and that N incorporation enhances osteogenesis and rapid biomineralization. A model Ti/TiO2-SiOx interface was formed by first depositing Ti onto Si wafers, followed by surface patterning, thermal annealing to form TiO2, and depositing SiOx/Si(ON)x overlays. TEM micrographs showed conformal SiOx layers on Ti/TiO2 overlays while XPS data revealed the formation of an elemental Ti-O-Si interface. Nanoscratch testing verified strong SiOx bonding with the underlying TiO2 layers. In vitro studies showed that the surface properties changed significantly to reveal the formation of hydroxycarbonate apatite within 6 h, and Si(ON)x surface chemistry induced osteogenic gene expression of human periosteal cells and led to a rapid "bone-like" biomineral formation within 4 weeks. XANES data revealed that the incorporation of N increased the surface HA bioactivity by increasing the carbonate to phosphate ratio. In conclusion, silicon oxynitride overlays on bone-implant systems enhance osteogenesis and biomineralization via surface nitrogen incorporation.
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Affiliation(s)
- Azhar Ilyas
- Department of Biomedical Sciences, Baylor College of Dentistry Texas A&M University, 3302 Gaston Avenue, Dallas, Texas 75246, United States
| | - Nickolay V. Lavrik
- Center for Nanophase Materials Science, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Harry K.W. Kim
- Department of Orthopaedic Surgery, University of Texas Southwestern Medical Center at Dallas, Dallas, Texas 75390, United States
- Center for Excellence in Hip Disorders, Texas Scottish Rite Hospital, 2222 Welborn Street, Dallas, Texas 75219, United States
| | - Pranesh B. Aswath
- Department of Materials Science and Engineering, University of Texas at Arlington, 501 West First Street, Arlington, Texas 76019, United States
| | - Venu G. Varanasi
- Department of Biomedical Sciences, Baylor College of Dentistry Texas A&M University, 3302 Gaston Avenue, Dallas, Texas 75246, United States
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21
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Guo X, Wang Z, Wu J, Wang J, Zhu YJ, Sham TK. Imaging of drug loading distributions in individual microspheres of calcium silicate hydrate--an X-ray spectromicroscopy study. NANOSCALE 2015; 7:6767-6773. [PMID: 25804516 DOI: 10.1039/c4nr07471h] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Imaging is one of the most direct and ideal ways to track drug loading distributions in drug carriers on the molecular level, which will facilitate the optimization of drug carriers and drug loading capacities. Herein, we report the mapping of an individual mesoporous calcium silicate hydrate (CSH) microsphere before and after the loading of ibuprofen (IBU) and the interactions between drug carriers and drug molecules simultaneously by scanning transmission X-ray microscopy (STXM). Nanoscaled X-ray absorption near edge structure (XANES) spectroscopy clearly indicates that IBU is bonded to calcium and silicate sites via carboxylic acid groups. More importantly, STXM has been successfully used to determine the absolute thickness of IBU, revealing its distribution in the CSH microsphere.
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Affiliation(s)
- Xiaoxuan Guo
- Department of Chemistry, University of Western Ontario, London, Ontario N6A 5B7, Canada.
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22
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Aruwajoye OO, Kim HKW, Aswath PB. Bone apatite composition of necrotic trabecular bone in the femoral head of immature piglets. Calcif Tissue Int 2015; 96:324-34. [PMID: 25660159 DOI: 10.1007/s00223-015-9959-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2014] [Accepted: 01/24/2015] [Indexed: 10/24/2022]
Abstract
Ischemic osteonecrosis of the femoral head (IOFH) can lead to excessive resorption of the trabecular bone and collapse of the femoral head as a structure. A well-known mineral component to trabecular bone is hydroxyapatite, which can be present in many forms due to ionic substitution, thus altering chemical composition. Unfortunately, very little is known about the chemical changes to bone apatite following IOFH. We hypothesized that the apatite composition changes in necrotic bone possibly contribute to increased osteoclast resorption and structural collapse of the femoral head. The purpose of this study was to assess the macroscopic and local phosphate composition of actively resorbed necrotic trabecular bone to isolate differences between areas of increased osteoclast resorption and normal bone formation. A piglet model of IOFH was used. Scanning electron microscopy (SEM), histology, X-ray absorbance near edge structure (XANES), and Raman spectroscopy were performed on femoral heads to characterize normal and necrotic trabecular bone. Backscattered SEM, micro-computed tomography and histology showed deformity and active resorption of necrotic bone compared to normal. XANES and Raman spectroscopy obtained from actively resorbed necrotic bone and normal bone showed increased carbonate-to-phosphate content in the necrotic bone. The changes in the apatite composition due to carbonate substitution may play a role in the increased resorption of necrotic bone due to its increase in solubility. Indeed, a better understanding of the apatite composition of necrotic bone could shed light on osteoclast activity and potentially improve therapeutic treatments that target excessive resorption of bone.
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Affiliation(s)
- Olumide O Aruwajoye
- Materials Science and Engineering Department, University of Texas at Arlington, 501 West First Street, Arlington, TX, 76019, USA
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23
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Luo H, Xiong G, Zhang C, Li D, Zhu Y, Guo R, Wan Y. Surface controlled calcium phosphate formation on three-dimensional bacterial cellulose-based nanofibers. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 49:526-533. [PMID: 25686980 DOI: 10.1016/j.msec.2015.01.053] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2014] [Revised: 12/21/2014] [Accepted: 01/14/2015] [Indexed: 11/19/2022]
Abstract
Studies on the early calcium phosphate (Ca-P) formation on nanosized substrates may allow us to understand the biomineralization mechanisms at the molecular level. In this work, in situ formation of Ca-P minerals on bacterial cellulose (BC)-based nanofibers was investigated, for the first time, using the X-ray absorption near-edge structure (XANES) spectroscopy. In addition, the influence of the surface coating of nanofibers on the formation of Ca-P minerals was determined. Combined with XRD analysis, XANES results revealed that the nascent precursor was ACP (amorphous calcium phosphate) which was converted to TCP (β-tricalcium phosphate), then OCP (octacalcium phosphate), and finally to HAP (hydroxyapatite) when phosphorylated BC nanofibers were the templates. However, the formation of nascent precursor and its transformation process varied depending on the nature of the coating material on nanofibrous templates. These results provide new insights into basic mechanisms of mineralization and can lead to the development of novel bioinspired nanostructured materials.
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Affiliation(s)
- Honglin Luo
- School of Materials Science and Engineering, Tianjin University, Tianjin Key Laboratory of Composite and Functional Materials, Tianjin 300072, PR China
| | - Guangyao Xiong
- School of Mechanical and Electrical Engineering, East China Jiaotong University, Nanchang, Jiangxi 330013, PR China
| | - Chen Zhang
- School of Optometry and Ophthalmology, Tianjin Medical University Eye Hospital, Tianjin 300384, PR China
| | - Deying Li
- School of Mechanical and Electrical Engineering, East China Jiaotong University, Nanchang, Jiangxi 330013, PR China
| | - Yong Zhu
- School of Chemical Engineering, Tianjin University, Tianjin Key Laboratory of Composite and Functional Materials, Tianjin 300072, PR China
| | - Ruisong Guo
- School of Materials Science and Engineering, Tianjin University, Tianjin Key Laboratory of Composite and Functional Materials, Tianjin 300072, PR China
| | - Yizao Wan
- School of Materials Science and Engineering, Tianjin University, Tianjin Key Laboratory of Composite and Functional Materials, Tianjin 300072, PR China.
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24
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Hou D, Zhou W, Wu C, Dorenbos P, Liang H, Sham TK, Zhang B, Huang Y, Tao Y. Luminescence and X-ray absorption studies on 0.5% Ce3+ doped BaCa2MgSi2O8 phosphor. Phys Chem Chem Phys 2015; 17:22035-41. [DOI: 10.1039/c5cp03668b] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ce3+ ions prefer to enter a Ba2+ site. Each element in the host contributes to luminescence differently.
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Affiliation(s)
- Dejian Hou
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry
- KLGHEI of Environment and Energy Chemistry
- School of Chemistry and Chemical Engineering
- Sun Yat-sen University
- Guangzhou 510275
| | - Weijie Zhou
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry
- KLGHEI of Environment and Energy Chemistry
- School of Chemistry and Chemical Engineering
- Sun Yat-sen University
- Guangzhou 510275
| | - Cen Wu
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry
- KLGHEI of Environment and Energy Chemistry
- School of Chemistry and Chemical Engineering
- Sun Yat-sen University
- Guangzhou 510275
| | - Pieter Dorenbos
- Faculty of Applied Sciences
- Delft University of Technology
- 2629 JB Delft
- The Netherlands
| | - Hongbin Liang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry
- KLGHEI of Environment and Energy Chemistry
- School of Chemistry and Chemical Engineering
- Sun Yat-sen University
- Guangzhou 510275
| | - Tsun-Kong Sham
- Department of Chemistry
- The University of Western Ontario
- London
- Canada
| | - Bingbing Zhang
- Beijing Synchrotron Radiation Facility
- Institute of High Energy Physics
- Chinese Academy of Sciences
- Beijing 100039
- China
| | - Yan Huang
- Beijing Synchrotron Radiation Facility
- Institute of High Energy Physics
- Chinese Academy of Sciences
- Beijing 100039
- China
| | - Ye Tao
- Beijing Synchrotron Radiation Facility
- Institute of High Energy Physics
- Chinese Academy of Sciences
- Beijing 100039
- China
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25
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Guo X, Wang Z, Wu J, Hu Y, Wang J, Zhu YJ, Sham TK. Tracking the transformations of mesoporous microspheres of calcium silicate hydrate at the nanoscale upon ibuprofen release: a XANES and STXM study. CrystEngComm 2015. [DOI: 10.1039/c5ce00500k] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
XANES and STXM imaging of mesoporous CSH microspheres indicate that amorphous silica provide aggregation site of HAp, and amorphous CaCO3 was formed during CSH biomineralization.
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Affiliation(s)
- Xiaoxuan Guo
- Department of Chemistry
- University of Western Ontario
- London, Canada
| | - Zhiqiang Wang
- Department of Chemistry
- University of Western Ontario
- London, Canada
| | - Jin Wu
- Shanghai Institute of Ceramics
- Chinese Academy of Sciences
- Shanghai 200050, China
| | | | - Jian Wang
- Canadian Light Source
- Saskatoon, Canada
| | - Ying-Jie Zhu
- Shanghai Institute of Ceramics
- Chinese Academy of Sciences
- Shanghai 200050, China
| | - Tsun-Kong Sham
- Department of Chemistry
- University of Western Ontario
- London, Canada
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26
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Cosmidis J, Benzerara K, Nassif N, Tyliszczak T, Bourdelle F. Characterization of Ca-phosphate biological materials by scanning transmission X-ray microscopy (STXM) at the Ca L2,3-, P L2,3- and C K-edges. Acta Biomater 2015; 12:260-269. [PMID: 25305511 DOI: 10.1016/j.actbio.2014.10.003] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2014] [Revised: 08/19/2014] [Accepted: 10/02/2014] [Indexed: 02/05/2023]
Abstract
Several naturally occurring biological materials, including bones and teeth, pathological calcifications, microbial mineral deposits formed in marine phosphogenesis areas, as well as bio-inspired cements used for bone and tooth repair are composed of Ca-phosphates. These materials are usually identified and characterized using bulk-scale analytical tools such as X-ray diffraction, Fourier transform infrared spectroscopy or nuclear magnetic resonance. However, there is a need for imaging techniques that provide information on the spatial distribution and chemical composition of the Ca-phosphate phases at the micrometer- and nanometer scales. Such analyses provide insightful indications on how the materials may have formed, e.g. through transient precursor phases that eventually remain spatially separated from the mature phase. Here, we present scanning transmission X-ray microscopy (STXM) analyses of Ca-phosphate reference compounds, showing the feasibility of fingerprinting Ca-phosphate-based materials. We calibrate methods to determine important parameters of Ca-phosphate phases, such as their Ca/P ratio and carbonate content at the ∼25nm scale, using X-ray absorption near-edge spectra at the C K-, Ca L2,3- and P L2,3-edges. As an illustrative case study, we also perform STXM analyses on hydroxyapatite precipitates formed in a dense fibrillar collagen matrix. This study paves the way for future research on Ca-phosphate biomineralization processes down to the scale of a few tens of nanometers.
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Affiliation(s)
- Julie Cosmidis
- Institut de Minéralogie, de Physique des Matériaux, et de Cosmochimie (IMPMC), Sorbonne Universités, Univ Paris 06, CNRS UMR 7590, MNHN, IRD UMR 206, F-75252 Paris 05, France
| | - Karim Benzerara
- Institut de Minéralogie, de Physique des Matériaux, et de Cosmochimie (IMPMC), Sorbonne Universités, Univ Paris 06, CNRS UMR 7590, MNHN, IRD UMR 206, F-75252 Paris 05, France.
| | - Nadine Nassif
- Lab Chim Matière Condensée (LMCM), Univ Paris 06, Coll France, CNRS UMR 7574, F-75231 Paris 05, France
| | - Tolek Tyliszczak
- Lawrence Berkeley National Laboratory, Advanced Light Source, Berkeley, CA 94720 USA
| | - Franck Bourdelle
- Lab Génie Civil et géo-Environnement (LGCgE), Univ Lille 1, SN5, 59655 Villeneuve-d'Ascq, France
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27
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Rajendran J, Gialanella S, Aswath PB. XANES analysis of dried and calcined bones. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2013; 33:3968-79. [PMID: 23910303 DOI: 10.1016/j.msec.2013.05.038] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2013] [Revised: 04/14/2013] [Accepted: 05/16/2013] [Indexed: 10/26/2022]
Abstract
The structure of dried and calcined bones from chicken, bovine, deer, pig, sheep and chamois was examined using X-ray Absorption Near Edge Structure (XANES) spectroscopy. The oxygen K-edge absorption edge indicates that the surface of dried bone has a larger proportion of carbonate than the interior that is made up of phosphates. The phosphorus L and K edge clearly indicate that pyrophosphates, α-tricalcium phosphate (α-TCP) and hydrogen phosphates of Ca do not exist in either the dried bone or calcined bone and phosphorus exists as either β-tricalcium phosphate (β-TCP) or hydroxyapatite, both in the dried and calcined conditions. The Ca K-edge analysis indicates that β-TCP is the likely form of phosphate in both the dried and calcined conditions.
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Affiliation(s)
- Jayapradhi Rajendran
- Materials Science and Engineering Department, University of Texas at Arlington, USA
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28
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Guo X, Wu J, Yiu YM, Hu Y, Zhu YJ, Sham TK. Drug–nanocarrier interaction—tracking the local structure of calcium silicate upon ibuprofen loading with X-ray absorption near edge structure (XANES). Phys Chem Chem Phys 2013; 15:15033-40. [DOI: 10.1039/c3cp50699a] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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29
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Carrodeguas R, De Aza S. α-Tricalcium phosphate: synthesis, properties and biomedical applications. Acta Biomater 2011; 7:3536-46. [PMID: 21712105 DOI: 10.1016/j.actbio.2011.06.019] [Citation(s) in RCA: 209] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2011] [Revised: 06/10/2011] [Accepted: 06/10/2011] [Indexed: 11/25/2022]
Abstract
Nowadays, α-tricalcium phosphate (α-TCP, α-Ca(3)(PO(4))(2)) is receiving growing attention as a raw material for several injectable hydraulic bone cements, biodegradable bioceramics and composites for bone repair. In the phase equilibrium diagram of the CaO-P(2)O(5) system, three polymorphs corresponding to the composition Ca(3)(PO(4))(2) are recognized: β-TCP, α-TCP and α'-TCP. α-TCP is formed by heating the low-temperature polymorph β-TCP or by thermal crystallization of amorphous precursors with the proper composition above the transformation temperature. The α-TCP phase may be retained at room temperature in a metastable state, and its range of stability is strongly influenced by ionic substitutions. It is as biocompatible as β-TCP, but more soluble, and hydrolyses rapidly to calcium-deficient hydroxyapatite, which makes α-TCP a useful component for preparing self-setting osteotransductive bone cements and biodegradable bioceramics and composites for bone repairing. The literature published on the synthesis and properties of α-TCP is sometimes contradictory, and therefore this article focuses on reviewing and critically discussing the synthetic methods and physicochemical and biological properties of α-TCP-based biomaterials (excluding α-TCP-based bone cements).
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