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Bazin T, Duttine M, Julien I, Champion E, Demourgues A, Gaudon M. Exotic Fe II/Fe III Local Environments in the Hexagonal Channels of Hydroxyapatite. Inorg Chem 2022; 61:14377-14388. [PMID: 36044741 DOI: 10.1021/acs.inorgchem.2c02212] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In this fundamental solid-state chemistry study, two sample series were investigated in depth: iron(III)-doped hydroxyapatite (HA) compounds obtained from a co-sintering process of hematite and pure HA under air and iron(III)-doped HA compounds obtained from a co-sintering process from iron(II) acetate and pure HA under an argon atmosphere. X-ray diffraction, UV-visible, Fourier transform infrared, 1H and 31P NMR, electron paramagnetic resonance (EPR,) and Mössbauer spectroscopy methods were coupled to unravel the Fe valence states, the interactions with other anionic species (OH- and PO43-), and finally the complex local environments in hexagonal channels in both the series. In particular, we highlighted the associated mechanism to ensure electroneutrality with a focus on deprotonation versus calcium substitution. By diverging mechanisms, Fe3+ and Fe2+ ions were found to be located in different coordinated sites: 4(+1) coordinated site for Fe3+ and 2(+3) coordinated site for Fe2+ and clearly associated with very different Mössbauer and EPR signatures as various absorption bands (leading to different sample colors).
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Affiliation(s)
- Tiphaine Bazin
- CNRS, Université de Bordeaux, Bordeaux INP, ICMCB, UMR 5026, F-33600 Pessac, France.,Université de Limoges, IRCER─Centre Européen de la Céramique, UMR CNRS 7315, F-87068 Limoges, France
| | - Mathieu Duttine
- CNRS, Université de Bordeaux, Bordeaux INP, ICMCB, UMR 5026, F-33600 Pessac, France
| | - Isabelle Julien
- Université de Limoges, IRCER─Centre Européen de la Céramique, UMR CNRS 7315, F-87068 Limoges, France
| | - Eric Champion
- Université de Limoges, IRCER─Centre Européen de la Céramique, UMR CNRS 7315, F-87068 Limoges, France
| | - Alain Demourgues
- CNRS, Université de Bordeaux, Bordeaux INP, ICMCB, UMR 5026, F-33600 Pessac, France
| | - Manuel Gaudon
- CNRS, Université de Bordeaux, Bordeaux INP, ICMCB, UMR 5026, F-33600 Pessac, France
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Uskoković V. The Samsonov Configurational Model: Instructive Historical Remarks and the Extension of Its Application to Substituted Hydroxyapatite. COMMENT INORG CHEM 2022. [DOI: 10.1080/02603594.2022.2106977] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
Affiliation(s)
- Vuk Uskoković
- TardigradeNano LLC, Irvine, California, USA
- Department of Mechanical Engineering, San Diego State University, San Diego, California, USA
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Iron in Hydroxyapatite: Interstitial or Substitution Sites? NANOMATERIALS 2021; 11:nano11112978. [PMID: 34835742 PMCID: PMC8625999 DOI: 10.3390/nano11112978] [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: 10/02/2021] [Revised: 10/25/2021] [Accepted: 11/01/2021] [Indexed: 12/18/2022]
Abstract
Iron-doped hydroxyapatite (Fe-HAp) is regarded as a promising magnetic material with innate biocompatibility. Despite the many studies reported in the literature, a detailed theoretical description of Fe inclusions is still missing. There is even no consensual view on what kind of Fe defects take place in Fe-HAp-iron interstitial or calcium substitutions? In order to address these questions, we employ modern first-principles methodologies, including hybrid density functional theory, to find the geometry, electronic, magnetic and thermodynamic properties of iron impurities in Fe-HAp. We consider a total of 26 defect configurations, including substitutional (phosphorus and calcium sites) and interstitial defects. Formation energies are estimated considering the boundaries of chemical potentials in stable hydroxyapatite. We show that the most probable defect configurations are: Fe3+ and Fe2+ substitutions of Ca(I) and Ca(II) sites under Ca-poor conditions. Conversely, Fe interstitials near the edge of the hydroxyl channel are favored in Ca-rich material. Substitutional Fe on the P site is also a probable defect, and unlike the other forms of Fe, it adopts a low-spin state. The analysis of Fe K-XANES spectra available in the literature shows that Fe-HAp usually contains iron in different configurations.
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Rodrigues AFM, Torres PMC, Barros MJS, Presa R, Ribeiro N, Abrantes JCC, Belo JH, Amaral JS, Amaral VS, Bañobre-López M, Bettencourt A, Sousa A, Olhero SM. Effective production of multifunctional magnetic-sensitive biomaterial by an extrusion-based additive manufacturing technique. ACTA ACUST UNITED AC 2020; 16:015011. [PMID: 32750692 DOI: 10.1088/1748-605x/abac4c] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A calcium phosphate (CaP)-based scaffold used as synthetic bone grafts, which smartly combines precise dimensions, controlled porosity and therapeutic functions, presents benefits beyond those offered by conventional practices, although its fabrication is still a challenge. The sintering step normally required to improve the strength of the ceramic scaffolds precludes the addition of any biomolecules or functional particles before this stage. This study presents a proof of concept of multifunctional CaP-based scaffolds, fabricated by additive manufacturing from an innovative ink composition, with potential for bone regeneration, cancer treatment by local magnetic hyperthermia and drug delivery platforms. Highly loaded inks comprising iron-doped hydroxyapatite and β-tricalcium phosphate powders suspended in a chitosan-based solution, in the presence of levofloxacin (LEV) as model drug and magnetic nanoparticles (MNP), were developed. The sintering step was removed from the production process, and the integrity of the printed scaffolds was assured by the polymerization capacity of the ink composite, using genipin as a crosslinking agent. The effects of MNP and LEV on the inks' rheological properties, as well as on the mechanical and structural behaviour of non-doped and iron-doped scaffolds, were evaluated. Magnetic and magneto-thermal response, drug delivery and biological performance, such as cell proliferation in the absence and presence of an applied magnetic field, were also assessed. The addition of a constant amount of MNP in the iron-doped and non-doped CaP-based inks enhances their magnetic response and induction heating, with these effects more pronounced for the iron-doped CaP-based ink. These results suggest a synergistic effect between the iron-doped CaP-based powders and the MNP due to ferro/ferrimagnetic interactions. Furthermore, the iron presence enhances human mesenchymal stem cell metabolic activity and proliferation.
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Affiliation(s)
- A F M Rodrigues
- Department of Materials Engineering and Ceramics (DEMaC), CICECO-Aveiro Institute of Materials, University of Aveiro, Aveiro 3810-193, Portugal
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Characterization and Luminescence of Eu3+- and Gd3+-Doped Hydroxyapatite Ca10(PO4)6(OH)2. CRYSTALS 2020. [DOI: 10.3390/cryst10090806] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Luminescence properties of europium-doped Ca10-xEux(PO4)6(OH)2 (xEu = 0, 0.01, 0.02, 0.10 and 0.20) and gadolinium-doped hydroxyapatite Ca9.80Gd0.20(PO4)6(OH)2 (HA), synthesized via solid-state reaction at T = 1300 °C, were investigated using scanning electron microscopy (SEM), powder X-ray diffraction (PXRD), Fourier transform infrared (FTIR), and luminescence spectroscopy. Crystal structure characterization (from unit cell parameters determination to refined atomic positions) was achieved in the P63/m space group. FTIR analyses show only slight band shifts of (PO4) modes as a function of the rare earth concentration. Structural refinement, achieved via the Rietveld method, and luminescence spectroscopy highlighted the presence of dopant at the Ca2 site. Strong luminescence was observed for all Eu- and Gd-doped samples. Our multi-methodological study confirms that rare-earth (RE)-doped synthetic hydroxyapatites are promising materials for bio-imaging applications.
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Crystal Chemistry and Luminescence Properties of Eu-Doped Polycrystalline Hydroxyapatite Synthesized by Chemical Precipitation at Room Temperature. CRYSTALS 2020. [DOI: 10.3390/cryst10040250] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Europium-doped hydroxyapatite Ca10(PO4)6(OH)2 (3% mol) powders were synthesized by an optimized chemical precipitation method at 25 °C, followed by drying at 120 °C and calcination at 450 °C and 900 °C. The obtained nanosized crystallite samples were investigated by means of a combination of inductively coupled plasma (ICP) spectroscopy, powder X-ray diffraction (PXRD), Fourier Transform Infrared (FTIR), Raman and photoluminescence (PL) spectroscopies. The Rietveld refinement in the hexagonal P63/m space group showed europium ordered at the Ca2 site at high temperature (900 °C), and at the Ca1 site for lower temperatures (120 °C and 450 °C). FTIR and Raman spectra showed slight band shifts and minor modifications of the (PO4) bands with increasing annealing temperature. PL spectra and decay curves revealed significant luminescence emission for the phase obtained at 900 °C and highlighted the migration of Eu from the Ca1 to Ca2 site as a result of increasing calcinating temperature.
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Basu S, Basu B. Unravelling Doped Biphasic Calcium Phosphate: Synthesis to Application. ACS APPLIED BIO MATERIALS 2019; 2:5263-5297. [DOI: 10.1021/acsabm.9b00488] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Subhadip Basu
- Materials Research Centre, Indian Institute of Science, Bangalore 560012, India
| | - Bikramjit Basu
- Materials Research Centre, Indian Institute of Science, Bangalore 560012, India
- Center for BioSystems Science and Engineering, Indian Institute of Science, Bangalore 560012, India
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Basu S, Ghosh A, Barui A, Basu B. Epithelial cell functionality on electroconductive Fe/Sr co-doped biphasic calcium phosphate. J Biomater Appl 2019; 33:1035-1052. [PMID: 30630385 DOI: 10.1177/0885328218821549] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
In the perspective of dental restorative applications, co-doped bioceramics have not been explored much. From the clinical perspective, a successful dental implant is expected to interact with peri-prosthetic bones, gingival tissue, and surrounding connective tissues. The interaction of implant and implant coating materials with bone tissue is well studied. However, their interaction with surrounding epithelial components needs scientific validation. In this context, the present study aims at quantitative evaluation of the electrical properties of Fe/Sr co-doped biphasic calcium phosphate (BCP) samples and assessment of their cytocompatibility with epithelial (vero) cells. Sr/Fe co-doped BCPs were prepared by sol-gel synthesis technique, with different dopant concentration. Impact of co-doping on conductivity was assessed and interestingly an increase in conductivity with dopant amount was recorded in different co-doped BCPs. Cellular study showed the significant ( p = 0.01) increase in both cellular viability and functionality with increasing conductivity of samples. Higher epithelial cell adhesion indicates that (Sr/Fe) co-doped BCP would be favorable for faster epithelial sealing and also would reduce the chances of infection. Real-time PCR and immunofluorescence studies indicated that the expression of the epithelial marker (E-cadherin) significantly ( p = 0.01) increased in 10, 30 and 40 mol% co-doped samples in comparison to undoped BCP. In contrast to E-cadherin, fold change of β-catenin remains unchanged amongst the co-doped ceramics, implying the absence of tumorigenic potential of (Sr/Fe) co-doped BCP. In addition, immune-fluorescence signatures for cellular polarity are established from enhanced expression PARD3 protein, which has major relevance for cellular morphogenesis and cell division. Summarizing, the present study establishes the efficacy of Sr/Fe co-doped BCPs as a dental implant coating material and its ability to modulate vero cell functionality.
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Affiliation(s)
- Subhadip Basu
- 1 Laboratory for Biomaterials, Materials Research Center, Indian Institute of Science, Bangalore, India
| | - Aritri Ghosh
- 2 Centre for Healthcare Science and Technology, Indian Institute of Engineering Science and Technology, Howrah, India
| | - Ananya Barui
- 2 Centre for Healthcare Science and Technology, Indian Institute of Engineering Science and Technology, Howrah, India
| | - Bikramjit Basu
- 1 Laboratory for Biomaterials, Materials Research Center, Indian Institute of Science, Bangalore, India.,3 Center for Biosystems Science and Engineering, Indian Institute of Science, Bangalore, India
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Kato S, Ikeda S, Saito K, Ogasawara M. Fe incorporation into hydroxyapatite channels by Fe loading and post-annealing. J SOLID STATE CHEM 2018. [DOI: 10.1016/j.jssc.2018.06.032] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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10
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Magnetic properties and cytocompatibility of transition-metal-incorporated hydroxyapatite. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 87:112-119. [PMID: 29549940 DOI: 10.1016/j.msec.2018.02.018] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2017] [Revised: 02/01/2018] [Accepted: 02/22/2018] [Indexed: 11/21/2022]
Abstract
A detailed magnetization study, along with an assessment of the cellular proliferation, has been carried out on transition-metal-doped hydroxyapatite (HA), Ca10-xMx(PO4)6(OH)2, where M = Mn, Co, and Fe. In particular, a series of MnHA powder samples with an x value of 0.04 ≤ x ≤ 1.21, one CoHA (x = 0.48) and one FeHA sample (x = 1.06) were synthesized using a wet chemical method along with an ion-exchange procedure. Characterization by transmission electron microscope (TEM), energy-dispersive X-ray spectroscopy (EDXS), X-ray diffraction (XRD), and Fourier transform infrared spectroscopy (FTIR) indicated that the substitution of M elements does not change the morphology and crystalline structure of pure HA that showing a single phased HA nano-rod. In every case, the magnetization isotherms for 10 K ≤ T ≤ 300 K were linear through the origin characteristic of a paramagnetic response with no indication of superparamagnetic behavior, hysteresis, or magnetic ordering. The magnetic behavior for all samples could be fit to the Curie-Weiss law yielding values for the M ion magnetic moments. The Mn2+ magnetic moments were close to the spin-only value of S = 5/2 or 5.92 μB, while the Co2+ moment (4.41 μB) was larger than the spin-only value for S = 3/2, indicating an orbital contribution due to incomplete quenching. The magnetic behavior for the FeHA sample showed a possible spin-state transition. In addition, no statistically significant differences were observed when cells were treated with the same dose of HA or MnHA up to 50 μg/mL, suggesting that the substituted Mn introduces no cytotoxicity to the HA powders.
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11
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Basu S, Ghosh A, Barui A, Basu B. (Fe/Sr) Codoped Biphasic Calcium Phosphate with Tailored Osteoblast Cell Functionality. ACS Biomater Sci Eng 2018; 4:857-871. [DOI: 10.1021/acsbiomaterials.7b00813] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | - Aritri Ghosh
- Centre for Healthcare Science and Technology, Indian Institute of Engineering Science and Technology, Shibpur, Howrah 711103, West Bengal, India
| | - Ananya Barui
- Centre for Healthcare Science and Technology, Indian Institute of Engineering Science and Technology, Shibpur, Howrah 711103, West Bengal, India
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Iannotti V, Adamiano A, Ausanio G, Lanotte L, Aquilanti G, Coey JMD, Lantieri M, Spina G, Fittipaldi M, Margaris G, Trohidou K, Sprio S, Montesi M, Panseri S, Sandri M, Iafisco M, Tampieri A. Fe-Doping-Induced Magnetism in Nano-Hydroxyapatites. Inorg Chem 2017; 56:4447-4459. [PMID: 28379709 DOI: 10.1021/acs.inorgchem.6b03143] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Doping of biocompatible nanomaterials with magnetic phases is currently one of the most promising strategies for the development of advanced magnetic biomaterials. However, especially in the case of iron-doped magnetic hydroxyapatites, it is not clear if the magnetic features come merely from the magnetic phases/ions used as dopants or from complex mechanisms involving interactions at the nanoscale. Here, we report an extensive chemical-physical and magnetic investigation of three hydroxyapatite nanocrystals doped with different iron species and containing small or no amounts of maghemite as a secondary phase. The association of several investigation techniques such as X-ray absorption spectroscopy, Mössbauer, magnetometry, and TEM allowed us to determine that the unusual magnetic properties of Fe2+/3+-doped hydroxyapatites (FeHA) occur by a synergy of two different phenomena: i.e., (i) interacting superparamagnetism due to the interplay between iron-doped apatite and iron oxide nanoparticles as well as to the occurrence of dipolar interactions and (ii) interacting paramagnetism due to Fe3+ ions present in the superficial hydrated layer of the apatite nanophase and, to a lesser extent, paramagnetism due to isolated Fe3+ ions in the apatite lattice. We also show that a major player in the activation of the above phenomena is the oxidation of Fe2+ into Fe3+, as induced by the synthesis process, and their consequent specific positioning in the FeHA structure.
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Affiliation(s)
- Vincenzo Iannotti
- CNR-SPIN and Department of Physics "E. Pancini", University of Naples "Federico II" , Piazzale V. Tecchio 80, I-80125 Napoli, Italy
| | - Alessio Adamiano
- Institute of Science and Technology for Ceramics (ISTEC), National Research Council (CNR) , Via Granarolo 64, 48018 Faenza, Italy
| | - Giovanni Ausanio
- CNR-SPIN and Department of Physics "E. Pancini", University of Naples "Federico II" , Piazzale V. Tecchio 80, I-80125 Napoli, Italy
| | - Luciano Lanotte
- CNR-SPIN and Department of Physics "E. Pancini", University of Naples "Federico II" , Piazzale V. Tecchio 80, I-80125 Napoli, Italy
| | - Giuliana Aquilanti
- Elettra-SincrotoneTrieste S.C.p.A. , s.s. 14, km 163.5, I-34149 Basovizza, Trieste, Italy
| | | | - Marco Lantieri
- ISC-CNR , via Madonna del Piano 10, 50019 Sesto Fiorentino (FI), Italy
| | - Gabriele Spina
- Department of Physics, University of Florence , via Sansone 1, 50019 Sesto Fiorentino (FI), Italy
| | - Maria Fittipaldi
- Department of Physics, University of Florence , via Sansone 1, 50019 Sesto Fiorentino (FI), Italy
| | - George Margaris
- Institute of Nanoscience & Nanotechnology, NCSR "Demokritos" , Aghia Paraskevi, 15310 Athens, Greece
| | - Kalliopi Trohidou
- Institute of Nanoscience & Nanotechnology, NCSR "Demokritos" , Aghia Paraskevi, 15310 Athens, Greece
| | - Simone Sprio
- Institute of Science and Technology for Ceramics (ISTEC), National Research Council (CNR) , Via Granarolo 64, 48018 Faenza, Italy
| | - Monica Montesi
- Institute of Science and Technology for Ceramics (ISTEC), National Research Council (CNR) , Via Granarolo 64, 48018 Faenza, Italy
| | - Silvia Panseri
- Institute of Science and Technology for Ceramics (ISTEC), National Research Council (CNR) , Via Granarolo 64, 48018 Faenza, Italy
| | - Monica Sandri
- Institute of Science and Technology for Ceramics (ISTEC), National Research Council (CNR) , Via Granarolo 64, 48018 Faenza, Italy
| | - Michele Iafisco
- Institute of Science and Technology for Ceramics (ISTEC), National Research Council (CNR) , Via Granarolo 64, 48018 Faenza, Italy
| | - Anna Tampieri
- Institute of Science and Technology for Ceramics (ISTEC), National Research Council (CNR) , Via Granarolo 64, 48018 Faenza, Italy
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Gomes S, Kaur A, Grenèche JM, Nedelec JM, Renaudin G. Atomic scale modeling of iron-doped biphasic calcium phosphate bioceramics. Acta Biomater 2017; 50:78-88. [PMID: 27965170 DOI: 10.1016/j.actbio.2016.12.011] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2016] [Revised: 12/02/2016] [Accepted: 12/06/2016] [Indexed: 12/31/2022]
Abstract
Biphasic calcium phosphates (BCPs) are bioceramics composed of hydroxyapatite (HAp, Ca10(PO4)6(OH)2) and beta-Tricalcium Phosphate (β-TCP, Ca3(PO4)2). Because their chemical and mineral composition closely resembles that of the mineral component of bone, they are potentially interesting candidates for bone repair surgery, and doping can advantageously be used to improve their biological behavior. However, it is important to describe the doping mechanism of BCP thoroughly in order to be able to master its synthesis and then to fully appraise the benefit of the doping process. In the present paper we describe the ferric doping mechanism: the crystallographic description of our samples, sintered at between 500°C and 1100°C, was provided by Rietveld analyses on X-ray powder diffraction, and the results were confirmed using X-ray absorption spectroscopy and 57Fe Mössbauer spectrometry. The mechanism is temperature-dependent, like the previously reported zinc doping mechanism. Doping was performed on the HAp phase, at high temperature only, by an insertion mechanism. The Fe3+ interstitial site is located in the HAp hexagonal channel, shifted from its centre to form a triangular three-fold coordination. At lower temperatures, the Fe3+ are located at the centre of the channel, forming linear two-fold coordinated O-Fe-O entities. The knowledge of the doping mechanism is a prerequisite for a correct synthesis of the targeted bioceramic with the adapted (Ca+Fe)/P ratio, and so to be able to correctly predict its potential iron release or magnetic properties. STATEMENT OF SIGNIFICANCE Biphasic calcium phosphates (BCPs) are bioceramics composed of hydroxyapatite (HAp, Ca10(PO4)6(OH)2) and beta-Tricalium Phosphate (β-TCP, Ca3(PO4)2). Because their chemical and mineral composition closely resembles that of the mineral component of bone, they are potentially interesting candidates for bone repair surgery. Doping can advantageously be used to improve their biological behaviors and/or magnetic properties; however, it is important to describe the doping mechanism of BCP thoroughly in order to fully appraise the benefit of the doping process. The present paper scrutinizes in detail the incorporation of ferric cation in order to correctly interpret the behavior of the iron-doped bioceramic in biological fluid. The temperature dependent mechanism has been fully described for the first time. And it clearly appears that temperature can be used to design the doping according to desired medical application: blood compatibility, remineralization, bactericidal or magnetic response.
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Alshemary AZ, Engin Pazarceviren A, Tezcaner A, Evis Z. Fe3+
/SeO42−
dual doped nano hydroxyapatite: A novel material for biomedical applications. J Biomed Mater Res B Appl Biomater 2017; 106:340-352. [DOI: 10.1002/jbm.b.33838] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2016] [Revised: 12/01/2016] [Accepted: 12/05/2016] [Indexed: 12/22/2022]
Affiliation(s)
- Ammar Z. Alshemary
- Department of Biomedical Engineering; Faculty of Engineering, Karabuk University; 78050 Karabuk Turkey
| | | | - Aysen Tezcaner
- Department of Engineering Sciences; Middle East Technical University; Ankara 06800 Turkey
| | - Zafer Evis
- Department of Engineering Sciences; Middle East Technical University; Ankara 06800 Turkey
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Chen G, Zheng X, Wang C, Hui J, Sheng X, Xu X, Bao J, Xiu W, Yuwen L, Fan D. A postsynthetic ion exchange method for tunable doping of hydroxyapatite nanocrystals. RSC Adv 2017. [DOI: 10.1039/c7ra10516a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Hydroxyapatite nanocrystals were doped with various metal ions with tunable doping level and preserved morphology via a postsynthetic approach.
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Severin AV, Pankratov DA. Synthesis of nanohydroxyapatite in the presence of iron(III) ions. RUSS J INORG CHEM+ 2016. [DOI: 10.1134/s0036023616030190] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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17
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Multifunctional hydroxyapatite nanoparticles for drug delivery and multimodal molecular imaging. Mikrochim Acta 2015. [DOI: 10.1007/s00604-015-1504-x] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Low HR, Avdeev M, Ramesh K, White TJ. Zinc hydroxyapatite catalyst for decomposition of 2-propanol. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2012; 24:4175-4179. [PMID: 22714569 DOI: 10.1002/adma.201104755] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2011] [Revised: 02/22/2012] [Indexed: 06/01/2023]
Affiliation(s)
- Hou Ran Low
- School of Materials Science and Engineering, Nanyang Technological University, Singapore.
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Tampieri A, D’Alessandro T, Sandri M, Sprio S, Landi E, Bertinetti L, Panseri S, Pepponi G, Goettlicher J, Bañobre-López M, Rivas J. Intrinsic magnetism and hyperthermia in bioactive Fe-doped hydroxyapatite. Acta Biomater 2012; 8:843-51. [PMID: 22005331 DOI: 10.1016/j.actbio.2011.09.032] [Citation(s) in RCA: 155] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2011] [Revised: 09/20/2011] [Accepted: 09/26/2011] [Indexed: 10/17/2022]
Abstract
The use of magnetic activation has been proposed to answer the growing need for assisted bone and vascular remodeling during template/scaffold regeneration. With this in mind, a synthesis procedure was developed to prepare bioactive (Fe2+/Fe3+)-doped hydroxyapatite (Fe-HA), endowed with superparamagnetic-like properties. This new class of magnetic hydroxyapatites can be potentially employed to develop new magnetic ceramic scaffolds with enhanced regenerative properties for bone surgery; in addition, magnetic Fe-HA can find application in anticancer therapies, to replace the widely used magnetic iron oxide nanoparticles, whose long-term cytotoxicity was recently found to reach harmful levels. An extensive physicochemical, microstructural and magnetic characterization was performed on the obtained Fe-HA powders, and demonstrated that the simultaneous addition of Fe2+ and Fe3+ ions during apatite nucleation under controlled synthesis conditions induces intrinsic magnetization in the final product, minimizing the formation of magnetite as secondary phase. This result potentially opens new perspectives for biodevices aimed at bone regeneration and for anti-cancer therapies based on hyperthermia.
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Uskoković V, Uskoković DP. Nanosized hydroxyapatite and other calcium phosphates: Chemistry of formation and application as drug and gene delivery agents. J Biomed Mater Res B Appl Biomater 2010; 96:152-91. [DOI: 10.1002/jbm.b.31746] [Citation(s) in RCA: 389] [Impact Index Per Article: 27.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Veselinović L, Karanović L, Stojanović Z, Bračko I, Marković S, Ignjatović N, Uskoković D. Crystal structure of cobalt-substituted calcium hydroxyapatite nanopowders prepared by hydrothermal processing. J Appl Crystallogr 2010. [DOI: 10.1107/s0021889809051395] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
A series of cobalt-exchanged hydroxyapatite (CoHAp) powders with different Ca/Co ratios and nominal unit-cell contents Ca10−xCox(PO4)6(OH)2,x= 0, 0.5, 1.0, 1.5 and 2.0, were synthesized by hydrothermal treatment of a precipitate at 473 K for 8 h. Based on ICP (inductively coupled plasma) emission spectroscopy analysis, it was established that the maximum amount of cobalt incorporation saturated at ∼12 at.% under these conditions. The effects of cobalt content on the CoHAp powders were investigated using ICP emission spectroscopy, particle size analysis, transmission electron microscopy (TEM) and high-resolution transmission electron microscopy (HRTEM) analyses as well as X-ray powder diffraction (XRPD) including Rietveld analysis. According to XRPD, all the materials are single-phase HAp and CoHAp of low crystallinity. Rietveld analysis shows that Co enrichment causes theccell parameter to decrease at a faster rate than theacell parameter. A microstructural analysis showed anisotropic X-ray line broadening due to crystallite size reduction. In CoHAp there is significant crystal elongation in [001], and the average size decreases with increasing cobalt content. The crystallite morphology transforms from rod-like for the pure HAp to lamellae at the highest degree of Co substitution. The results of Rietveld refinement (symmetry, size and morphology of the crystallites) were confirmed by TEM and HRTEM analysis.
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22
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Low HR, Ritter C, White TJ. Crystal structure refinements of the 2H and 2M pseudomorphs of ferric carbonate-hydroxyapatite. Dalton Trans 2010; 39:6488-95. [DOI: 10.1039/c001612h] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Baikie T, Ng GMH, Madhavi S, Pramana SS, Blake K, Elcombe M, White TJ. The crystal chemistry of the alkaline-earth apatites A10(PO4)6CuxOy(H)z (A = Ca, Sr and Ba). Dalton Trans 2009:6722-6. [DOI: 10.1039/b906639j] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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