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Costantino C, Monico L, Rosi F, Vivani R, Romani A, Colocho Hurtarte LC, Villalobos-Portillo E, Sahle CJ, Huthwelker T, Dejoie C, Burghammer M, Cotte M. Non-Destructive and Non-Invasive Approaches for the Identification of Hydroxy Lead-Calcium Phosphate Solid Solutions ((Pb xCa 1-x) 5(PO 4) 3OH) in Cultural Heritage Materials. APPLIED SPECTROSCOPY 2024:37028241243375. [PMID: 38567433 DOI: 10.1177/00037028241243375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
Lead-calcium phosphates are unusual compounds sometimes found in different kinds of cultural heritage objects. Structural and physicochemical properties of this family of materials, which fall into the hydroxypyromorphite-hydroxyapatite solid solution, or (PbxCa1-x)5(PO4)3OH, have received considerable attention during the last few decades for promising applications in different fields of environmental and material sciences, but their diagnostic implications in the cultural heritage context have been poorly explored. This paper aims to provide a clearer understanding of the relationship between compositional and structural properties of the peculiar series of (PbxCa1-x)5(PO4)3OH solid solutions and to determine key markers for their proper non-destructive and non-invasive identification in cultural heritage samples and objects. For this purpose, a systematic study of powders and paint mock-ups made up of commercial and in-house synthesized (PbxCa1-x)5(PO4)3OH compounds with a different Pb2+/Ca2+ ratio was carried out via a multi-technique approach based on scanning electron microscopy, synchrotron radiation-based X-ray techniques, i.e., X-ray powder diffraction and X-ray absorption near edge structure spectroscopy at the Ca K- and P K-edges, and vibrational spectroscopy methods, i.e., micro-Raman and Fourier transform infrared spectroscopy. The spectral modifications observed in the hydroxypyromorphite-hydroxyapatite solid solution series are discussed, by assessing the advantages and disadvantages of the proposed techniques and by providing reference data and optimized approaches for future non-destructive and non-invasive applications to study cultural heritage objects and samples.
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Affiliation(s)
- Claudio Costantino
- Centre of Excellence SMAArt and Department of Chemistry, Biology and Biotechnology, University of Perugia, Perugia, Italy
- CNR-SCITEC, c/o Department of Chemistry, Biology and Biotechnology, University of Perugia, Perugia, Italy
| | - Letizia Monico
- Centre of Excellence SMAArt and Department of Chemistry, Biology and Biotechnology, University of Perugia, Perugia, Italy
- CNR-SCITEC, c/o Department of Chemistry, Biology and Biotechnology, University of Perugia, Perugia, Italy
- AXIS Research Group, NANOlab Centre of Excellence, Department of Physics, University of Antwerp, Antwerp, Belgium
| | - Francesca Rosi
- CNR-SCITEC, c/o Department of Chemistry, Biology and Biotechnology, University of Perugia, Perugia, Italy
| | - Riccardo Vivani
- Pharmaceutical Science Department, University of Perugia, Perugia, Italy
| | - Aldo Romani
- Centre of Excellence SMAArt and Department of Chemistry, Biology and Biotechnology, University of Perugia, Perugia, Italy
- CNR-SCITEC, c/o Department of Chemistry, Biology and Biotechnology, University of Perugia, Perugia, Italy
| | | | | | | | - Thomas Huthwelker
- Swiss Light Source, Paul Scherrer Institut, Villigen PSI, Switzerland
| | | | | | - Marine Cotte
- European Synchrotron Radiation Facility, Grenoble, France
- Sorbonne Université, CNRS, Laboratoire d'archéologie moléculaire et structurale, LAMS, UMR 8220, Paris, France
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Paramasivan M, Sampath Kumar TS, Kanniyappan H, Muthuvijayan V, Chandra TS. Biomimetic ion substituted and Co-substituted hydroxyapatite nanoparticle synthesis using Serratia Marcescens. Sci Rep 2023; 13:4513. [PMID: 36934131 PMCID: PMC10024725 DOI: 10.1038/s41598-023-30996-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Accepted: 03/06/2023] [Indexed: 03/20/2023] Open
Abstract
Biomimicry is becoming deep-rooted as part of bioceramics owing to its numerous functional advantages. Naturally occurring hydroxyapatite (HA) apart from primary nano structures are also characterised by various ionic substitutions. The ease of accommodating such key elements into the HA lattice is known to enhance bone healing properties of bioceramics. In this work, hydroxyapatite synthesized via biomimetic approach was substituted with individual as well as multiple cations for potential applications in bone repair. Ion substitutions of Sr, Mg and Zn was carried out on HA for the first time by using Serratia grown in a defined biomineralization medium. The individual ions of varying concentration substituted in Serratia HA (SHA) (Sr SHA, Mg SHA and Zn SHA) were analysed for crystallinity, functional groups, morphology and crystal size. All three showed decreased crystallinity, phase purity, large agglomerated aggregates and needle-shaped morphologies. Fourier transform infrared spectroscopy (FTIR) spectra indicated increased carbonate content of 5.8% resembling that of natural bone. Additionally, the reduced O-H intensities clearly portrayed disruption of HA lattice and subsequent ion-substitution. The novelty of this study lies primarily in investigating the co-substitution of a combination of 1% Sr, Zn and Mg in SHA and establishing the associated change in bone parameters. Scanning electron microscope (SEM) and transmission electron microscope (TEM) images clearly illustrated uniform nano-sized agglomerates of average dimensions of 20-50 nm length and 8-15 nm width for Sr SHA; 10-40 nm length and 8-10 nm width for both Zn SHA and Mg SHA and 40-70 nm length and 4-10 nm width in the case of 1% Sr, Zn, Mg SHA. In both individual as well as co-substitutions, significant peak shifts were not observed possibly due to the lower concentrations. However, cell volumes increased in both cases due to presence of Sr2+ validating its dominant integration into the SHA lattice. Rich trace ion deposition was presented by energy dispersive X-ray spectroscopy (EDS) and quantified using inductively coupled plasma optical emission spectrometer (ICP-OES). In vitro cytotoxicity studies in three cell lines viz. NIH/3T3 fibroblast cells, MG-63 osteosarcoma cells and RAW 264.7 macrophages showed more than 90% cell viability proving the biocompatible nature of 1% Sr, Zn and Mg in SHA. Microbial biomineralization by Serratia produced nanocrystals of HA that mimicked "bone-like apatite" as evidenced by pure phase, carbonated groups, reduced crystallinity, nano agglomerates, variations in cell parameters, rich ion deposition and non-toxic nature. Therefore ion-substituted and co-substituted biomineralized nano SHA appears to be a suitable candidate for applications in biomedicine addressing bone injuries and aiding regeneration as a result of its characteristics close to that of the human bone.
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Affiliation(s)
- Mareeswari Paramasivan
- Department of Biotechnology, Indian Institute of Technology Madras, Chennai, Tamil Nadu, 600036, India
- Medical Materials Laboratory, Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, Chennai, Tamil Nadu, 600036, India
| | - T S Sampath Kumar
- Medical Materials Laboratory, Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, Chennai, Tamil Nadu, 600036, India.
| | - Hemalatha Kanniyappan
- Department of Biotechnology, Indian Institute of Technology Madras, Chennai, Tamil Nadu, 600036, India
| | - Vignesh Muthuvijayan
- Department of Biotechnology, Indian Institute of Technology Madras, Chennai, Tamil Nadu, 600036, India
| | - T S Chandra
- Department of Biotechnology, Indian Institute of Technology Madras, Chennai, Tamil Nadu, 600036, India.
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Oshita M, Umeda K, Kataoka M, Azuma Y, Furuzono T. Continuous antimicrobial mechanism of dispersible hydroxyapatite nanoparticles doped with zinc ions for percutaneous device coatings. J Biomater Appl 2022; 37:659-667. [PMID: 35708097 DOI: 10.1177/08853282221108839] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Percutaneous devices-indwelling catheters-related infections are serious clinical incidents. It is accordingly necessary to develop anti-infective coating materials suitable for the devices for long-term effectiveness. In our research group, highly dispersible and crystalline hydroxyapatite (HAp) nanoparticles doped with metallic or halogen ions possessing antibacterial activities have been developed. In this study, antibacterial, dispersible, and crystalline zinc (Zn)-doped hydroxyapatite [Zn(15)-HAp] nanoparticles substituted with 13.5% Zn content [Zn/(Zn + Ca) × 100] were prepared by a wet chemical method using an anti-sintering agent through calcination. Antibacterial activities of Zn(15)-HAp nanoparticles were evaluated using Escherichia coli (E. coli) and Staphylococcus aureus. The survival rates of the bacteria on Zn(15)-HAp nanoparticles were significantly lower than that on normal HAp (nHAp) coated surfaces, while no influences were observed on proliferation of L929 cells. Even after soaking Zn(15)-HAp nanoparticles in PBS for 2 weeks, the antibacterial activities against E. coli were maintained at a similar level to a 20 min soaking. The bacterial death was related to not only ion-exchange phenomenon between Zn and magnesium ions but also accumulation of reactive oxygen species (ROS) in the cells. Allergic-like reactions-anaphylactoid reactions-might not readily occur with Zn(15)-HAp nanoparticles because the amounts of histamine released from HMC-1 cells co-cultured with nanoparticles were not significantly different to that of nHAp, but were statistically much lower than that of chlorhexidine.
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Affiliation(s)
- Mari Oshita
- Biological System Engineering, 74014Graduate School of Biology Oriented Science and Technology, Kindai University, Kinokawa, Japan
| | - Koji Umeda
- Biological System Engineering, 74014Graduate School of Biology Oriented Science and Technology, Kindai University, Kinokawa, Japan
| | - Minami Kataoka
- Biological System Engineering, 74014Graduate School of Biology Oriented Science and Technology, Kindai University, Kinokawa, Japan
| | - Yoshinao Azuma
- Biotechnological Science, 74014Graduate School of Biology Oriented Science and Technology, Kindai University, Kinokawa, Japan
| | - Tsutomu Furuzono
- Biological System Engineering, 74014Graduate School of Biology Oriented Science and Technology, Kindai University, Kinokawa, Japan
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Benitez-Maldonado DV, García-Díaz E, Sabinas-Hernández SA, Silva-González R, Robles-Águila MJ. Zinc-doped hydroxyapatite: an UVA light photocatalyst for the removal of bisphenol A. NEW J CHEM 2022. [DOI: 10.1039/d2nj01621d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Zinc-doped hydroxyapatite obtained by a simple co-precipitation method achieved a photocatalytic removal > 80% of Bisphenol A.
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Affiliation(s)
- D. V. Benitez-Maldonado
- Benemérita Universidad Autónoma de Puebla, Instituto de Ciencias, Centro de Investigación en Dispositivos Semiconductores, Ciudad Universitaria, Puebla, Pue, C. P. 72570, Mexico
| | - E. García-Díaz
- Benemérita Universidad Autónoma de Puebla, Instituto de Ciencias, Centro de Química, Ciudad Universitaria, C. P. 72570, Puebla, Pue, Mexico
| | - Sergio A. Sabinas-Hernández
- Benemérita Universidad Autónoma de Puebla, Instituto de Física, P.O. Box J-48, Puebla, Pue, C. P. 72570, Mexico
| | - R. Silva-González
- Benemérita Universidad Autónoma de Puebla, Instituto de Física, P.O. Box J-48, Puebla, Pue, C. P. 72570, Mexico
| | - M. J. Robles-Águila
- Benemérita Universidad Autónoma de Puebla, Instituto de Ciencias, Centro de Investigación en Dispositivos Semiconductores, Ciudad Universitaria, Puebla, Pue, C. P. 72570, Mexico
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5
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Okada M, Oshita M, Kataoka M, Azuma Y, Furuzono T. Shareability of antibacterial and osteoblastic-proliferation activities of zinc-doped hydroxyapatite nanoparticles in vitro. J Biomed Mater Res B Appl Biomater 2021; 110:799-805. [PMID: 34687486 DOI: 10.1002/jbm.b.34959] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Revised: 10/09/2021] [Accepted: 10/12/2021] [Indexed: 11/11/2022]
Abstract
Four types of zinc (Zn)-doped hydroxyapatite (Zn-HAp) nanoparticles were prepared using calcium nitrate tetrahydrate as an anti-sintering agent during calcination at 600°C for 1 hr, to prevent calcination-induced aggregation. The Zn content of the nanopowders was determined at 0, 4.3, 9.2, and 14.7% [Zn/(Ca + Zn) × 100] using inductively coupled plasma atomic emission spectroscopic analysis. Based on X-ray diffraction analysis, the products were shown to possess an apatite structure without other crystalline impurities. The cell parameters of Zn-HAp nanoparticles decreased with increasing of Zn content in the HAp structures. This tendency implies that Zn ions substituted for Ca sites in the HAp crystal lattices. To investigate the biological effects of Zn-HAp nanoparticles, cell proliferation activity of MC3T3-E1 osteoblasts and antibacterial activity against Escherichia coli were evaluated in vitro. According to the results obtained, Zn-HAp nanoparticles containing of 14.7% Zn ions was noticeable shown shareability of the conflicting activities at 0.1 mg/mL.
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Affiliation(s)
- Masanori Okada
- Department of Biological System Engineering, Graduate School of Biology-Oriented Science and Technology, Kindai University, Wakayama, Japan
| | - Mari Oshita
- Department of Biological System Engineering, Graduate School of Biology-Oriented Science and Technology, Kindai University, Wakayama, Japan
| | - Minami Kataoka
- Department of Biological System Engineering, Graduate School of Biology-Oriented Science and Technology, Kindai University, Wakayama, Japan
| | - Yoshinao Azuma
- Department of Biotechnological Science, Graduate School of Biology-Oriented Science and Technology, Kindai University, Wakayama, Japan
| | - Tsutomu Furuzono
- Department of Biological System Engineering, Graduate School of Biology-Oriented Science and Technology, Kindai University, Wakayama, Japan
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DileepKumar VG, Sridhar MS, Aramwit P, Krut'ko VK, Musskaya ON, Glazov IE, Reddy N. A review on the synthesis and properties of hydroxyapatite for biomedical applications. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2021; 33:229-261. [PMID: 34521315 DOI: 10.1080/09205063.2021.1980985] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Hydroxyapatite (HA or HAp) is one of the most preferred biomaterials, specifically for bone tissue engineering. HAp is available naturally and is also chemically synthesized. The properties, shape, size and crystalline structure and applications of HAp vary widely depending on the source and extraction methods used. In addition to conventional chemical approaches such as precipitation or sol-gel techniques, newer methods such as microwave synthesis and atomic-layer deposition provide an opportunity to generate HAp with desirable structure and properties. Various methods used for the synthesis of HAp have their own pros and cons. Hence, it is essential to understand the role of specific methods and conditions on the properties and structure of HAps in order to obtain HAp with properties suitable for specific applications. In addition to pure HAp, substantial efforts have been made to dope HAp with various minerals or bioentities to enhance their suitability for medical, environmental remediation and other approaches. In this review, we provide an overview of the various chemical methods used to produce HAp, properties of the HAp produced and its potential applications. Particular focus of this paper is on the co-relation between properties and processes used to synthesis HAp. This review will enable readers to quickly understand the importance of synthesis methods and conditions on the properties of HAp and choose appropriate means to generate HAp with desired properties for specific applications.
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Affiliation(s)
- V G DileepKumar
- Center for Incubation, Innovation, Research and Consultancy, Jyothy Institute of Technology, Bangalore, Karnataka, India
| | - Mysore Santosh Sridhar
- Coal and Mineral Processing Division, CSIR - Central Institute of Mining and Fuel Research (CIMFR), Dhanbad, Jharkhand, India
| | - Pornanong Aramwit
- Department of Pharmacy Practice, Faculty of Pharmaceutical Sciences and Center of Excellence in Bioactive Resources for Innovative Clinical Applications, Chulalongkorn University, Bangkok, Thailand.,The Academy of Science, The Royal Society of Thailand, Bangkok, Thailand
| | - Valentina K Krut'ko
- Institute of General and Inorganic Chemistry, National Academy of Sciences of Belarus, Minsk, Belarus
| | - Olga N Musskaya
- Institute of General and Inorganic Chemistry, National Academy of Sciences of Belarus, Minsk, Belarus
| | - Ilya E Glazov
- Institute of General and Inorganic Chemistry, National Academy of Sciences of Belarus, Minsk, Belarus
| | - Narendra Reddy
- Center for Incubation, Innovation, Research and Consultancy, Jyothy Institute of Technology, Bangalore, Karnataka, India
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7
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Maqbool M, Nawaz Q, Atiq Ur Rehman M, Cresswell M, Jackson P, Hurle K, Detsch R, Goldmann WH, Shah AT, Boccaccini AR. Synthesis, Characterization, Antibacterial Properties, and In Vitro Studies of Selenium and Strontium Co-Substituted Hydroxyapatite. Int J Mol Sci 2021; 22:4246. [PMID: 33921909 PMCID: PMC8072711 DOI: 10.3390/ijms22084246] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 04/06/2021] [Accepted: 04/12/2021] [Indexed: 12/22/2022] Open
Abstract
In this study, as a measure to enhance the antimicrobial activity of biomaterials, the selenium ions have been substituted into hydroxyapatite (HA) at different concentration levels. To balance the potential cytotoxic effects of selenite ions (SeO32-) in HA, strontium (Sr2+) was co-substituted at the same concentration. Selenium and strontium-substituted hydroxyapatites (Se-Sr-HA) at equal molar ratios of x Se/(Se + P) and x Sr/(Sr + Ca) at (x = 0, 0.01, 0.03, 0.05, 0.1, and 0.2) were synthesized via the wet precipitation route and sintered at 900 °C. The effect of the two-ion concentration on morphology, surface charge, composition, antibacterial ability, and cell viability were studied. X-ray diffraction verified the phase purity and confirmed the substitution of selenium and strontium ions. Acellular in vitro bioactivity tests revealed that Se-Sr-HA was highly bioactive compared to pure HA. Se-Sr-HA samples showed excellent antibacterial activity against both Gram-negative (Escherichia coli) and Gram-positive (Staphylococcus carnosus) bacterial strains. In vitro cell-material interaction, using human osteosarcoma cells MG-63 studied by WST-8 assay, showed that Se-HA has a cytotoxic effect; however, the co-substitution of strontium in Se-HA offsets the negative impact of selenium and enhanced the biological properties of HA. Hence, the prepared samples are a suitable choice for antibacterial coatings and bone filler applications.
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Affiliation(s)
- Muhammad Maqbool
- Institute of Biomaterials, University of Erlangen-Nuremberg, 91058 Erlangen, Germany; (M.M.); (Q.N.); (M.A.U.R.); (R.D.)
- Lucideon Ltd., Penkhull, Stoke-on-Trent, Staffordshire ST4 7LQ, UK; (M.C.); (P.J.)
- CAM Bioceramics B.V., 2333 CL Leiden, The Netherlands
| | - Qaisar Nawaz
- Institute of Biomaterials, University of Erlangen-Nuremberg, 91058 Erlangen, Germany; (M.M.); (Q.N.); (M.A.U.R.); (R.D.)
| | - Muhammad Atiq Ur Rehman
- Institute of Biomaterials, University of Erlangen-Nuremberg, 91058 Erlangen, Germany; (M.M.); (Q.N.); (M.A.U.R.); (R.D.)
- Department of Materials Science and Engineering, Institute of Space Technology Islamabad, Islamabad 44000, Pakistan
| | - Mark Cresswell
- Lucideon Ltd., Penkhull, Stoke-on-Trent, Staffordshire ST4 7LQ, UK; (M.C.); (P.J.)
| | - Phil Jackson
- Lucideon Ltd., Penkhull, Stoke-on-Trent, Staffordshire ST4 7LQ, UK; (M.C.); (P.J.)
| | - Katrin Hurle
- GeoZentrum Nordbayern, Mineralogy, University of Erlangen-Nuremberg, 91054 Erlangen, Germany;
| | - Rainer Detsch
- Institute of Biomaterials, University of Erlangen-Nuremberg, 91058 Erlangen, Germany; (M.M.); (Q.N.); (M.A.U.R.); (R.D.)
| | - Wolfgang H. Goldmann
- Department of Biophysics, University of Erlangen-Nuremberg, 91052 Erlangen, Germany;
| | - Asma Tufail Shah
- Interdisciplinary Research Centre in Biomedical Materials (IRCBM), COMSATS University Islamabad Lahore Campus, Defence Road, Off-Raiwind Road, Lahore 54000, Pakistan;
| | - Aldo R. Boccaccini
- Institute of Biomaterials, University of Erlangen-Nuremberg, 91058 Erlangen, Germany; (M.M.); (Q.N.); (M.A.U.R.); (R.D.)
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8
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Noviyanti AR, Rahayu I, Fauzia RP, Risdiana. The effect of Mg concentration to mechanical strength of hydroxyapatite derived from eggshell. ARAB J CHEM 2021. [DOI: 10.1016/j.arabjc.2021.103032] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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9
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Rajendiran M, Trivedi HM, Chen D, Gajendrareddy P, Chen L. Recent Development of Active Ingredients in Mouthwashes and Toothpastes for Periodontal Diseases. Molecules 2021; 26:molecules26072001. [PMID: 33916013 PMCID: PMC8037529 DOI: 10.3390/molecules26072001] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Revised: 03/22/2021] [Accepted: 03/26/2021] [Indexed: 01/01/2023] Open
Abstract
Periodontal diseases like gingivitis and periodontitis are primarily caused by dental plaque. Several antiplaque and anti-microbial agents have been successfully incorporated into toothpastes and mouthwashes to control plaque biofilms and to prevent and treat gingivitis and periodontitis. The aim of this article was to review recent developments in the antiplaque, anti-gingivitis, and anti-periodontitis properties of some common compounds in toothpastes and mouthwashes by evaluating basic and clinical studies, especially the ones published in the past five years. The common active ingredients in toothpastes and mouthwashes included in this review are chlorhexidine, cetylpyridinium chloride, sodium fluoride, stannous fluoride, stannous chloride, zinc oxide, zinc chloride, and two herbs—licorice and curcumin. We believe this comprehensive review will provide useful up-to-date information for dental care professionals and the general public regarding the major oral care products on the market that are in daily use.
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Affiliation(s)
- Meenakshi Rajendiran
- The Center for Wound Healing and Tissue Regeneration, Department of Periodontics, College of Dentistry, University of Illinois at Chicago, Chicago, IL 60612, USA;
| | - Harsh M Trivedi
- Colgate-Palmolive Company, Piscataway, NJ 08854, USA; (H.M.T.); (D.C.)
| | - Dandan Chen
- Colgate-Palmolive Company, Piscataway, NJ 08854, USA; (H.M.T.); (D.C.)
| | - Praveen Gajendrareddy
- The Center for Wound Healing and Tissue Regeneration, Department of Periodontics, College of Dentistry, University of Illinois at Chicago, Chicago, IL 60612, USA;
- Correspondence: (P.G.); (L.C.); Tel.: +1-312-413-8405 (P.G.); +1-312-413-5387 (L.C.)
| | - Lin Chen
- The Center for Wound Healing and Tissue Regeneration, Department of Periodontics, College of Dentistry, University of Illinois at Chicago, Chicago, IL 60612, USA;
- Correspondence: (P.G.); (L.C.); Tel.: +1-312-413-8405 (P.G.); +1-312-413-5387 (L.C.)
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10
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Sprio S, Preti L, Montesi M, Panseri S, Adamiano A, Vandini A, Pugno NM, Tampieri A. Surface Phenomena Enhancing the Antibacterial and Osteogenic Ability of Nanocrystalline Hydroxyapatite, Activated by Multiple-Ion Doping. ACS Biomater Sci Eng 2019; 5:5947-5959. [PMID: 33405685 DOI: 10.1021/acsbiomaterials.9b00893] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The present work describes a novel nanocrystalline, multidoped hydroxyapatite featuring excellent eukaryotic versus prokaryotic cell selectivity, attested by excellent osteoinductive character and evaluated with human stem cells, and anti-infective ability, tested against different pathogens. Physicochemical analysis and transmission electron microscopy (TEM)/scanning STEM observations highlighted that such enhanced biological features are related to the lower crystallinity level and increased surface charge of hydroxyapatite, both induced by multiple-ion doping. Specifically, the lattice substitution of Ca2+ with Zn2+ promotes the segregation of Ca2+ and doping Mg2+ cations to a less-ordered surface layer, thus promoting dynamic ion absorption/release acting as bioactive signals for cells and exerting an antiproliferative effect on all tested pathogens. These findings open the design of new biodevices, combining regenerative ability and effective microbial inhibition without using any antibiotic drugs. This is extremely important to circumvent bacterial resistance to antibiotics, which is today considered as one of the biggest threats to global health.
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Affiliation(s)
- Simone Sprio
- Institute of Science and Technology for Ceramics-National Research Council (ISTEC-CNR), Faenza 48018, Italy
| | - Lorenzo Preti
- Institute of Science and Technology for Ceramics-National Research Council (ISTEC-CNR), Faenza 48018, Italy.,Laboratory of Bio-inspired & Graphene Nanomechanics, Department of Civil, Environmental and Mechanical Engineering, University of Trento, Via Mesiano 77, 38123 Trento, Italy
| | - Monica Montesi
- Institute of Science and Technology for Ceramics-National Research Council (ISTEC-CNR), Faenza 48018, Italy
| | - Silvia Panseri
- Institute of Science and Technology for Ceramics-National Research Council (ISTEC-CNR), Faenza 48018, Italy
| | - Alessio Adamiano
- Institute of Science and Technology for Ceramics-National Research Council (ISTEC-CNR), Faenza 48018, Italy
| | - Alberta Vandini
- Institute of Microbiology, University of Ferrara, Ferrara 44121, Italy
| | - Nicola M Pugno
- Laboratory of Bio-inspired & Graphene Nanomechanics, Department of Civil, Environmental and Mechanical Engineering, University of Trento, Via Mesiano 77, 38123 Trento, Italy.,School of Engineering and Materials Science, Queen Mary University of London, Mile End Road, London E1 4NS, U.K.,Ket-Lab, Edoardo Amaldi Foundation, Via del Politecnico, 00133 Rome, Italy
| | - Anna Tampieri
- Institute of Science and Technology for Ceramics-National Research Council (ISTEC-CNR), Faenza 48018, Italy
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11
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Predoi D, Iconaru SL, Predoi MV, Stan GE, Buton N. Synthesis, Characterization, and Antimicrobial Activity of Magnesium-Doped Hydroxyapatite Suspensions. NANOMATERIALS (BASEL, SWITZERLAND) 2019; 9:E1295. [PMID: 31514280 PMCID: PMC6781056 DOI: 10.3390/nano9091295] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/04/2019] [Revised: 09/03/2019] [Accepted: 09/06/2019] [Indexed: 01/01/2023]
Abstract
Obtaining nanoscale materials has allowed for the miniaturization of components, which has led to the possibility of achieving more efficient devices with faster functions and much lower costs. While hydroxyapatite [HAp, Ca10(PO4)6(OH)2] is considered the most widely used material for medical applications in orthopedics, dentistry, and general surgery, the magnesium (Mg) is viewed as a promising biodegradable and biocompatible implant material. Furthermore, Mg is regarded as a strong candidate for developing medical implants due to its biocompatibility and antimicrobial properties against gram-positive and gram-negative bacteria. For this study, magnesium-doped hydroxyapatite (Ca10-xMgx (PO4)6 (OH)2, xMg = 0.1), 10MgHAp, suspensions were successfully obtained by an adapted and simple chemical co-precipitation method. The information regarding the stability of the nanosized 10MgHAp particles suspension obtained by ζ-potential analysis were confirmed for the first time by a non-destructive ultrasound-based technique. Structural and morphological studies of synthesized 10MgHAp were conducted by X-ray diffraction (XRD), Fourier-transform infrared (FTIR) spectroscopy in attenuated total reflectance (ATR) mode and scanning electron microscopy (SEM). The XRD analysis of the 10MgHAp samples confirmed that a single crystalline phase associated to HAp with an average grain size about 93.3 nm was obtained. The FTIR-ATR spectra revealed that the 10MgHAp sample presented broader IR bands with less visible peaks when compared to a well-crystallized pure HAp. The SEM results evidenced uniform MgHAp nanoparticles with spherical shape. The antimicrobial activity of the 10MgHAp suspension against gram-positive strains (Staphylococcus aureus ATCC 25923, Enterococcus faecalis ATCC 29212), gram-negative strains (Escherichia coli ATCC 25922, Pseudomonas aeruginosa ATCC 27853), as well as a fungal strain (Candida albicans ATCC 90029) were evaluated.
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Affiliation(s)
- Daniela Predoi
- National Institute of Materials Physics, 405A Atomistilor Street, P.O. Box MG7, 077125 Magurele, Romania.
| | - Simona Liliana Iconaru
- National Institute of Materials Physics, 405A Atomistilor Street, P.O. Box MG7, 077125 Magurele, Romania.
| | - Mihai Valentin Predoi
- University Politehnica of Bucharest, BN 002, 313 Splaiul Independentei, Sector 6, 10023 Bucharest, Romania.
| | - George E Stan
- National Institute of Materials Physics, 405A Atomistilor Street, P.O. Box MG7, 077125 Magurele, Romania.
| | - Nicolas Buton
- HORIBA Jobin Yvon S.A.S., 6-18, Rue du Canal, 91165 Longjumeau CEDEX, France.
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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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Ramification of zinc oxide doped hydroxyapatite biocomposites for the mineralization of osteoblasts. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 96:337-346. [DOI: 10.1016/j.msec.2018.11.033] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Revised: 08/16/2018] [Accepted: 11/23/2018] [Indexed: 11/20/2022]
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Alioui H, Bouras O, Bollinger JC. Toward an efficient antibacterial agent: Zn- and Mg-doped hydroxyapatite nanopowders. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART A, TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING 2019; 54:315-327. [PMID: 30633639 DOI: 10.1080/10934529.2018.1550292] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Revised: 11/11/2018] [Accepted: 11/14/2018] [Indexed: 06/09/2023]
Abstract
The use of synthetic hydroxyapatites (HAps) in biomedical and environmental applications is well warranted given that they have been shown to behave as an excellent bio-compatible material in human teeth and bones. In this paper, a series of HAps doped and co-doped with two metal cations (zinc and magnesium) has been successfully synthesized by means of the precipitation method using CaCl2, Na2HPO4, ZnCl2 and MgCl2 aqueous solutions as reagents. The synthesized samples have been characterized using Fourier transform infrared (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM) and X-ray fluorescence spectroscopy (XRF). All samples prepared using over 10 mol% of Zn and Mg ions were identified as HAp. However, the presence of metal cations caused a significant increase in their crystallite sizes (30-50 nm) along with the appearance of a second phase (scholzite, whitlockite). The XRF spectra indicated the presence of Ca, P, Zn and Mg in the powders prepared with a high Metal/P ratio (1.7-2). The antimicrobial activity of these nanopowders has been tested in vitro against five bacteria (Escherichia coli, Klebsiella pneumoniae, and Pseudomonas aeruginosa as Gram-negative; Staphylococcus aureus and Bacillus subtilis as Gram-positive) and two fungal strains (Candida albicans and Aspergillus niger). The outcomes revealed that these nanopowders exhibited strong antimicrobial activity, starting at 15 mol% of Zn and/or Mg.
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Affiliation(s)
- Houria Alioui
- a Laboratoire Eau Environnement et Développement Durable, Faculté de Technologie , Université Blida 1 , Blida , Algeria
| | - Omar Bouras
- a Laboratoire Eau Environnement et Développement Durable, Faculté de Technologie , Université Blida 1 , Blida , Algeria
| | - Jean-Claude Bollinger
- b Groupement de Recherche Eau Sol Environnement (GRESE), Faculté des Sciences et Techniques , Université de Limoges , Limoges , France
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Bhardwaj VA, Deepika PC, Basavarajaiah S. Zinc Incorporated Nano Hydroxyapatite: A Novel Bone Graft Used for Regeneration of Intrabony Defects. Contemp Clin Dent 2018; 9:427-433. [PMID: 30166839 PMCID: PMC6104351 DOI: 10.4103/ccd.ccd_192_18] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND To enhance the bioactivity of hydroxyapatite (HA), various ions have been incorporated into its porous structure such as zinc. Zinc has shown to have a stimulatory effect on osteoblastic cells. This study attempts to evaluate the efficacy of an indigenously prepared zinc incorporated nanohydroxyapatite (ZINH) bone graft in the treatment of intrabony defects. MATERIALS AND METHODS A split-mouth study, which consists of 11 systemically healthy subjects with 45 sites, were randomly treated with ZINH or with nanoHA alone. Plaque index, gingival index, gingival bleeding index, pocket depth (PD) and clinical attachment level (CAL) were assessed at baseline, 3, 6, 9, and 12 months. Bone probing depth (BPD) and radiographic parameters were assessed at baseline, 6, and 12 months. Statistical analysis used was student's t-test and one-way analysis of variance. RESULTS At 12 months, PD and BPD reduction was more in test (4.37 ± 0.989 mm and 3.36 ± 0.446 mm) than control (2.81 ± 0.084 mm and 2.15 ± 0.159 mm). Gain in CAL for test (3.08 ± 0.148 mm) was higher than control (2.33 ± 0.278 mm). Furthermore amount and percentage of bone fill was higher in test (1.92 ± 0.702 mm, 54.7 ± 20.286, respectively) than control (1.38 ± 0.650 mm, 40.2 ± 20.972, respectively). Statistically significant improvements in all parameters were seen in the test sites at 12 months. CONCLUSION ZINH bone graft can be considered as a prospective bone regenerative material.
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Affiliation(s)
- Vasundhra Ajay Bhardwaj
- Department of Periodontology, JSS Dental College and Hospital, Jagadguru Sri Shivarathreeshwara University, Mysore, Karnataka, India
| | - P. C. Deepika
- Department of Periodontology, JSS Dental College and Hospital, Mysore, Karnataka, India
| | - Siddaramaiah Basavarajaiah
- Department of Polymer Science and Technology, Sri Jayachamarajendra College of Engineering, Mysore, Karnataka, India
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Gradient coatings of strontium hydroxyapatite/zinc β-tricalcium phosphate as a tool to modulate osteoblast/osteoclast response. J Inorg Biochem 2018. [DOI: 10.1016/j.jinorgbio.2018.02.024] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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ZnO Nanoparticles with Different Sizes and Morphologies for Medical Implant Coatings: Synthesis and Cytotoxicity. BIONANOSCIENCE 2018. [DOI: 10.1007/s12668-018-0514-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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El-Wassefy NA, Reicha FM, Aref NS. Electro-chemical deposition of nano hydroxyapatite-zinc coating on titanium metal substrate. Int J Implant Dent 2017; 3:39. [PMID: 28803411 PMCID: PMC5554469 DOI: 10.1186/s40729-017-0095-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Accepted: 07/28/2017] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND Titanium is an inert metal that does not induce osteogenesis and has no antibacterial properties; it is proposed that hydroxyapatite coating can enhance its bioactivity, while zinc can contribute to antibacterial properties and improve osseointegration. AIMS A nano-sized hydroxyapatite-zinc coating was deposited on commercially pure titanium using an electro-chemical process, in order to increase its surface roughness and enhance adhesion properties. METHODS The hydroxyapatite-zinc coating was attained using an electro-chemical deposition in a solution composed of a naturally derived calcium carbonate, di-ammonium hydrogen phosphate, with a pure zinc metal as the anode and titanium as the cathode. The applied voltage was -2.5 for 2 h at a temperature of 85 °C. The resultant coating was characterized for its surface morphology and chemical composition using a scanning electron microscope (SEM), energy dispersive x-ray spectroscope (EDS), and Fourier transform infrared (FT-IR) spectrometer. The coated specimens were also evaluated for their surface roughness and adhesion quality. RESULTS Hydroxyapatite-zinc coating had shown rosette-shaped, homogenous structure with nano-size distribution, as confirmed by SEM analysis. FT-IR and EDS proved that coatings are composed of hydroxyapatite (HA) and zinc. The surface roughness assessment revealed that the coating procedure had significantly increased average roughness (Ra) than the control, while the adhesive tape test demonstrated a high-quality adhesive coat with no laceration on tape removal. CONCLUSIONS The developed in vitro electro-chemical method can be employed for the deposition of an even thickness of nano HA-Zn adhered coatings on titanium substrate and increases its surface roughness significantly.
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Affiliation(s)
- N A El-Wassefy
- Dental Biomaterials Department, Faculty of Dentistry, Mansoura University, 35516 El Gomhoria St., Mansoura, Egypt.
| | - F M Reicha
- Physics Department, Faculty of science, Mansoura University, 35516 El Gomhoria St., Mansoura, Egypt
| | - N S Aref
- Dental Biomaterials Department, Faculty of Dentistry, Mansoura University, 35516 El Gomhoria St., Mansoura, Egypt
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Characterization, Dissolution, and Solubility of Zn-Substituted Hydroxylapatites [(Zn xCa 1−x) 5(PO 4) 3OH] at 25°C. J CHEM-NY 2017. [DOI: 10.1155/2017/4619159] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
A series of Zn-substituted hydroxylapatites [(ZnxCa1−x)5(PO4)3OH, Zn-Ca-HA] with the Zn/(Zn + Ca) molar ratio (XZn) of 0~0.16 was prepared and characterized, and then the dissolution of the synthesized solids in aqueous solution was investigated by batch experiment. The results indicated that the aqueous zinc, calcium, and phosphate concentrations greatly depended on the Zn/(Zn + Ca) molar ratio of the Zn-Ca-HA solids (XZn). For the Zn-Ca-HA dissolution at 25°C with an initial pH of 2.00, the final solution pH increased, while the final solution calcium and phosphate concentrations decreased with the increasing XZn. The final solution zinc concentrations increased with the increasing XZn when XZn≤0.08 and decreased with the increasing XZn when XZn = 0.08~0.16. The mean Ksp values for (ZnxCa1−x)5(PO4)3OH at 25°C decreased from 10−57.75 to 10−58.59 with the increasing XZn from 0.00 to 0.08 and then increased from 10–58.59 to 10–56.63 with the increasing XZn from 0.08 to 0.16. This tendency was consistent with the dependency of the lattice parameter a on XZn. The corresponding free energies of formation (ΔGfo) increased lineally from −6310.45 kJ/mol to −5979.39 kJ/mol with the increasing XZn from 0.00 to 0.16.
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Khajuria DK, Disha C, Vasireddi R, Razdan R, Mahapatra DR. Risedronate/zinc-hydroxyapatite based nanomedicine for osteoporosis. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 63:78-87. [DOI: 10.1016/j.msec.2016.02.062] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2015] [Revised: 02/15/2016] [Accepted: 02/20/2016] [Indexed: 01/03/2023]
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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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Garbo C, Sindilaru M, Carlea A, Tomoaia G, Almasan V, Petean I, Mocanu A, Horovitz O, Tomoaia-Cotisel M. Synthesis and structural characterization of novel porous zinc substituted nanohydroxyapatite powders. PARTICULATE SCIENCE AND TECHNOLOGY 2015. [DOI: 10.1080/02726351.2015.1121180] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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de Lima GG, Campos L, Junqueira A, Devine DM, Nugent MJD. A novel pH-sensitive ceramic-hydrogel for biomedical applications. POLYM ADVAN TECHNOL 2015. [DOI: 10.1002/pat.3593] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Gabriel Goetten de Lima
- Athlone Institue of Technology; Materials Research Institute; Dublin Road, Co. Westmeath Athlone Ireland
| | - Lucas Campos
- Athlone Institue of Technology; Materials Research Institute; Dublin Road, Co. Westmeath Athlone Ireland
| | - Amanda Junqueira
- Athlone Institue of Technology; Materials Research Institute; Dublin Road, Co. Westmeath Athlone Ireland
| | - Declan M. Devine
- Athlone Institue of Technology; Materials Research Institute; Dublin Road, Co. Westmeath Athlone Ireland
- The Mayo Clinic; Rochester MN USA
| | - Michael J. D. Nugent
- Athlone Institue of Technology; Materials Research Institute; Dublin Road, Co. Westmeath Athlone Ireland
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Lala S, Ghosh M, Das PK, Das D, Kar T, Pradhan SK. Structural and microstructural interpretations of Zn-doped biocompatible bone-like carbonated hydroxyapatite synthesized by mechanical alloying. J Appl Crystallogr 2015. [DOI: 10.1107/s1600576714026119] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Single-phase nanocrystalline biocompatible Zn-dopedA-type carbonated hydroxyapatite (A-cHAp) powder has been synthesizedviamechanical alloying of a stoichiometric mixture of CaCO3, CaHPO4·2H2O and ZnO powders in open air at room temperature by 10 h of milling. TheA-type carbonation in HAp (A-cHAp) is confirmed by Fourier transform IR analysis. The structural and microstructural parameters of the as-milled powders are revealed by Rietveld powder structure refinement analysis and transmission electron microscopy. Zn substitution along with mechanical alloying causes partial amorphization of crystallineA-cHAp, analogous to native bone mineral. Zn2+cations substitute into the ninefold-coordinated Ca2+sites in theA-cHAp unit cell. An assay test using MTT [3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide] reveals a high percentage of cell viability and hence confirms the biocompatibility of the sample. The overall results indicate that the processedA-cHAp has a chemical composition very close to that of natural biological apatite.
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Zahra N, Fayyaz M, Iqbal W, Irfan M, Alam S. A process for the development of strontium hydroxyapatite. ACTA ACUST UNITED AC 2014. [DOI: 10.1088/1757-899x/60/1/012056] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Abstract
Hydroxapatite (HA) is a stable phase with low dissolution rate in body fluid. Meanwhile, β-tricalcium phosphate (β-TCP) is rather soluble but the dissolution rate is too fast for bone bonding. Therefore a mixture of both is desirable to control the bioresorbability. In this work, calcium phosphate powder has been synthesized via sol gel and wet precipitation method to compare phase behaviour of these powders upon calcination. XRD result clearly revealed that both as-synthesized powders were pure HA with good purity. The decomposition of HA to TCP took place in the range of 700-800 °C and 800-900 °C for sol gel and wet chemical precipitation powder, respectively. The weight loss detected at 700-850°C in TGA analysis confirmed the presence of this biphasic mixtures.From FTIR analysis, profound change in OH-band intensity was attributed to the increased in HA crystallinity with calcination temperature.
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Development of amperometric l-tyrosine sensor based on Fe-doped hydroxyapatite nanoparticles. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 35:85-91. [DOI: 10.1016/j.msec.2013.10.013] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2013] [Revised: 09/18/2013] [Accepted: 10/19/2013] [Indexed: 11/18/2022]
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Shepherd DV, Kauppinen K, Brooks RA, Best SM. An in vitro study into the effect of zinc substituted hydroxyapatite on osteoclast number and activity. J Biomed Mater Res A 2014; 102:4136-41. [PMID: 24443251 DOI: 10.1002/jbm.a.35089] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2013] [Revised: 12/23/2013] [Accepted: 01/17/2014] [Indexed: 11/11/2022]
Abstract
Zinc ions have been shown to inhibit osteoclast development and proliferation both in vitro and in vivo. The same inhibiting effect has been observed in vitro when zinc was substituted into tri-calcium phosphate (TCP). Because of the solubility of TCP it is not an ideal candidate for a material to inhibit osteoclast activity in the long term. Hydroxyapatite (HA) is less soluble and so potentially offers a more long-term, sustainable effect. Previous work has shown that zinc can successfully be substituted into HA and still retain phase purity after heat treatment. The study reported here presents the effects of zinc substituted HA on the development and activity of osteoclast-like cells. It was found that increasing zinc substitution levels led to a decrease in the number of these cells present after 21 days. When resorption activity was investigated it was found that an increase in the amount of zinc present in the discs led to a significant decrease in the amount of resorption taking place on the discs. These results provide evidence for the potential of zinc substituted HA as a material to reduce resorptive activity to provide long-term bonding of implant to bone.
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Affiliation(s)
- David V Shepherd
- Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge, CB3 0FS
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Ghadimi E, Eimar H, Marelli B, Nazhat SN, Asgharian M, Vali H, Tamimi F. Trace elements can influence the physical properties of tooth enamel. SPRINGERPLUS 2013; 2:499. [PMID: 24133648 PMCID: PMC3795877 DOI: 10.1186/2193-1801-2-499] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/02/2013] [Accepted: 09/27/2013] [Indexed: 11/10/2022]
Abstract
In previous studies, we showed that the size of apatite nanocrystals in tooth enamel can influence its physical properties. This important discovery raised a new question; which factors are regulating the size of these nanocrystals? Trace elements can affect crystallographic properties of synthetic apatite, therefore this study was designed to investigate how trace elements influence enamel's crystallographic properties and ultimately its physical properties. The concentration of trace elements in tooth enamel was determined for 38 extracted human teeth using inductively coupled plasma-optical emission spectroscopy (ICP-OES). The following trace elements were detected: Al, K, Mg, S, Na, Zn, Si, B, Co, Cr, Cu, Fe, Mn, Mo, Ni, Pb, Sb, Se and Ti. Simple and stepwise multiple regression was used to identify the correlations between trace elements concentration in enamel and its crystallographic structure, hardness, resistance to crack propagation, shade lightness and carbonate content. The presence of some trace elements in enamel was correlated with the size (Pb, Ti, Mn) and lattice parameters (Se, Cr, Ni) of apatite nanocrystals. Some trace elements such as Ti was significantly correlated with tooth crystallographic structure and consequently with hardness and shade lightness. We conclude that the presence of trace elements in enamel could influence its physical properties.
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Affiliation(s)
- Elnaz Ghadimi
- Faculty of Dentistry, McGill University, Montreal, QC Canada
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Shepherd D, Best SM. Production of zinc substituted hydroxyapatite using various precipitation routes. Biomed Mater 2013; 8:025003. [DOI: 10.1088/1748-6041/8/2/025003] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Synthesis and characterization of poly(4-vinyl pyridine-co-styrene)/FHAP nanocomposite, and its biomedical application. APPLIED NANOSCIENCE 2013. [DOI: 10.1007/s13204-012-0173-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Shepherd JH, Shepherd DV, Best SM. Substituted hydroxyapatites for bone repair. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2012; 23:2335-2347. [PMID: 22389101 DOI: 10.1007/s10856-012-4598-2] [Citation(s) in RCA: 114] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2011] [Accepted: 02/17/2012] [Indexed: 05/31/2023]
Abstract
Calcium phosphates such as hydroxyapatite have a wide range of applications both in bone grafts and for the coating of metallic implants, largely as a result of their chemical similarity to the mineral component of bone. However, to more accurately mirror the chemistry, various substitutions, both cationic (substituting for the calcium) and anionic (substituting for the phosphate or hydroxyl groups) have been produced. Significant research has been carried out in the field of substituted apatites and this paper aims to summarise some of the key effect of substitutions including magnesium, zinc, strontium, silicon and carbonate on physical and biological characteristics. Even small substitutions have been shown to have very significant effects on thermal stability, solubility, osteoclastic and osteoblastic response in vitro and degradation and bone regeneration in vivo.
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Affiliation(s)
- Jennifer H Shepherd
- Department of Materials Science and Metallurgy, University of Cambridge, New Museum's Site, Pembroke Street, Cambridge CB2 3QZ, UK.
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Gomes S, Nedelec JM, Renaudin G. On the effect of temperature on the insertion of zinc into hydroxyapatite. Acta Biomater 2012; 8:1180-9. [PMID: 22186160 DOI: 10.1016/j.actbio.2011.12.003] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2011] [Revised: 12/03/2011] [Accepted: 12/05/2011] [Indexed: 10/14/2022]
Abstract
Rietveld analysis of X-ray powder diffraction patterns recorded from 28 hydroxyapatite (HAp) samples containing various amounts of zinc (0, 1.6, 3.2 and 6.1wt.% Zn) and heat treated at various temperatures (between 500°C and 1100°C) has enabled the Zn insertion mechanism into the HAp crystal structure to be finely characterized. The formation of Zn-doped HAp was achieved above 900°C only. Zn-doped HAp has the Ca(10)Zn(x)(PO(4))(6)(OH)(2-2)(x)O(2)(x) (0<x⩽0.25) chemical composition with a constant Ca/P ratio of 1.67 due to the insertion mechanism into the hexagonal channel (partial occupancy of the 2b Wyckoff site with the formation of linear O-Zn-O entities). Samples heat treated at 500°C were almost single phase, HAp did not incorporate Zn and about half of the Zn atoms incorporated during the synthesis are not observable by X-ray powder diffraction (contained in an amorphous compound or physisorbed at the HAp surface). The reversible formation of Zn-doped β-TCP phase was observed at 600°C, reached its maximum content at 900°C and had almost vanished at 1100°C. The results presented here strengthen the recently described mechanism of Zn insertion in the interstitial 2b Wyckoff position of the HAp structure, and explain the origin of the contradictory reports in the corresponding literature.
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Tank KP, Sharma P, Kanchan DK, Joshi MJ. FTIR, powder XRD, TEM and dielectric studies of pure and zinc doped nano-hydroxyapatite. CRYSTAL RESEARCH AND TECHNOLOGY 2011. [DOI: 10.1002/crat.201100080] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Lynch RJM. Zinc in the mouth, its interactions with dental enamel and possible effects on caries; a review of the literature. Int Dent J 2011; 61 Suppl 3:46-54. [PMID: 21762155 PMCID: PMC9374993 DOI: 10.1111/j.1875-595x.2011.00049.x] [Citation(s) in RCA: 79] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/06/2023] Open
Abstract
Zinc is an essential trace element. In the mouth, it is present naturally in plaque, saliva and enamel. Zinc is formulated into oral health products to control plaque, reduce malodour and inhibit calculus formation. It has good oral substantivity, and elevated concentrations can persist for many hours in plaque and saliva following delivery from mouthrinses and toothpastes. Although low concentrations of zinc can both reduce enamel demineralisation and modify remineralisation, during caries clinical trials, the addition of zinc to fluoride toothpastes has not affected their ability to reduce caries. Mechanistic studies may help explain this apparent contradiction. Zinc is readily desorbed from hydroxyapatite by calcium, which is plentiful in plaque and saliva. Where crystal-growth sites remain occupied by zinc despite this, they may simply be 'over-grown' by remineralisation initiated at unoccupied sites. Further, under certain conditions, low concentrations of zinc can enhance remineralisation of enamel lesions, by retarding lesion arrestment. Although this may help to explain the apparent lack of an overall zinc effect on caries, it seems unlikely that any negative effects would be countered exactly by positive effects. Further mechanistic studies, complementing well-designed in vitro and in situ caries studies, should lead to further understanding of the zinc-enamel interactions relevant to demineralisation and remineralisation.
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Carpentier X, Bazin D, Combes C, Mazouyes A, Rouzière S, Albouy PA, Foy E, Daudon M. High Zn content of Randall's plaque: a μ-X-ray fluorescence investigation. J Trace Elem Med Biol 2011; 25:160-5. [PMID: 21763116 DOI: 10.1016/j.jtemb.2011.05.004] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2010] [Revised: 04/04/2011] [Accepted: 05/18/2011] [Indexed: 10/18/2022]
Abstract
Kidney stone disease, or nephrolithiasis, is a common ailment. Among the different risk factors usually associated with nephrolithiasis are dehydration, metabolic defects (especially with regard to calcium and oxalate). The presence of a mineral deposit at the surface of the renal papilla (termed Randall's plaque) has all been recently underlined. Of note, Randall's plaque is made of the calcium phosphate, carbapatite, and serves as a nucleus for kidney stone formation. The process by which apatite nanocrystals nucleate and form Randall's plaque remains unclear. This paper deals with the possible relationship between trace elements and the formation of this mineral. The investigation has been performed on a set of Randall's plaques, extracted from human kidney stones, through μ-X-ray diffraction and μ-X-ray fluorescence analyses in order to determine the chemical composition of the plaque as well as the nature and the amount of trace elements. Our data provide evidence that Zn levels are dramatically increased in carbapatite of RP by comparison to carbapatite in kidney stones, suggesting that calcified deposits within the medullar interstitium are a pathological process involving a tissue reaction. Further studies, perhaps including the investigation of biomarkers for inflammation, are necessary for clarifying the role of Zn in Randall's plaque formation.
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Affiliation(s)
- Xavier Carpentier
- Laboratoire de Physique des Solides, Bat 510, Université Paris XI, 91405 Orsay, France
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Nawawi NA, Sopyan I, Ramesh S, Afzeri. Phase behaviour of manganese-doped biphasic calcium phosphate ceramics synthesized via sol-gel method. ASIA-PAC J CHEM ENG 2010. [DOI: 10.1002/apj.480] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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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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Fabrication and Characterization of Strontium-Doped Hydroxyapatite Bioceramics Scaffolds for Bone Implant Application: A Preliminary Study. ACTA ACUST UNITED AC 2010. [DOI: 10.4028/www.scientific.net/amr.93-94.401] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this study, strontium doped hydroxyapatite (SrHA) nanopowder was synthesized through a sol-gel method. Strontium concentration was varied from 0 to 15 mol%. The obtained gel was then dried and subsequently subjected to 900 °C calcination. SrHA porous bodies were fabricated by using polymeric sponge method with different chemical compositions (0, 2 and 10 mol% SrHA). To prepare the porous samples, the synthesized SrHA powders was mixed with distilled water and appropriate amount of dispersing agent followed by drying in the ambient air for 72 hours. The dried impregnated sponges were then sintered at 1300°C for 3 hours. The XRD patterns showed high crystallinity of HA phase only for all porous samples. Morphological evaluation by FESEM measurement revealed that the SrHA scaffolds were characterized by a uniform distribution of interconnected pores (200-800 µm). Compression test on the porous scaffolds revealed that doping 10 mol% of strontium in HA has increased the compressive strength compared to the undoped HA.
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