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Ecer U, Yilmaz S, Ulas B, Koc S. Optimization of methyl orange decolorization by bismuth(0)-doped hydroxyapatite/reduced graphene oxide composite using RSM-CCD. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:33371-33384. [PMID: 38676869 PMCID: PMC11136733 DOI: 10.1007/s11356-024-33425-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2024] [Accepted: 04/18/2024] [Indexed: 04/29/2024]
Abstract
In the current study, the catalyst for the decolorization of methyl orange (MO) was developed HAp-rGO by the aqueous precipitation approach. Then, bismuth(0) nanoparticles (Bi NPs), which expect to show high activity, were reduced on the surface of the support material (HAp-rGO). The obtained catalyst was characterized by scanning electron microscopy (SEM), energy-dispersive X-ray analysis (EDX), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS) techniques. The parameters that remarkably affect the decolorization process (such as time, initial dye concentration, NaBH4 amount, and catalyst amount) have been examined by response surface methodology (RSM), an optimization method that has acquired increasing significance in recent years. In the decolorization of MO, the optimum conditions were identified as 2.91 min, Co: 18.85 mg/L, NaBH4 amount: 18.35 mM, and Bi/HAp-rGO dosage: 2.12 mg/mL with MO decolorization efficiency of 99.60%. The decolorization process of MO with Bi/HAp-rGO was examined in detail kinetically and thermodynamically. Additionally, the possible decolorization mechanism was clarified. The present work provides a new insight into the use of the optimization process for both the effective usage of Bi/HAp-rGO and the catalytic reduction of dyes.
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Affiliation(s)
- Umit Ecer
- Department of Chemical Engineering, Institute of Natural and Applied Sciences, Van Yuzuncu Yil University, 65080, Van, Turkey.
| | - Sakir Yilmaz
- Department of Chemical Engineering, Institute of Natural and Applied Sciences, Van Yuzuncu Yil University, 65080, Van, Turkey
- Department of Mining Engineering, Faculty of Engineering, Van Yuzuncu Yil University, Van, 65000, Turkey
| | - Berdan Ulas
- Department of Chemical Engineering, Institute of Natural and Applied Sciences, Van Yuzuncu Yil University, 65080, Van, Turkey
- Department of Mining Engineering, Faculty of Engineering, Van Yuzuncu Yil University, Van, 65000, Turkey
| | - Serap Koc
- Department of Mechanical Engineering, Faculty of Engineering, Van Yuzuncu Yil University, Van, 65000, Turkey
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2
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Wang H, Sun R, Huang S, Wu H, Zhang D. Fabrication and properties of hydroxyapatite/chitosan composite scaffolds loaded with periostin for bone regeneration. Heliyon 2024; 10:e25832. [PMID: 38463831 PMCID: PMC10920147 DOI: 10.1016/j.heliyon.2024.e25832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 01/30/2024] [Accepted: 02/02/2024] [Indexed: 03/12/2024] Open
Abstract
This paper reports a facile fabrication method of hydroxyapatite/chitosan (HAp/CS) composite scaffold with 3D porous structure without using any chemical cross-linkers. The HAp particles had an urchin-like hollow microstructure and high surface area, which was uniformly dispersed into the pore walls of the HAp/CS scaffold. The addition of HAp can efficiently enhance the mechanical properties and bioactivity of the HAp/CS scaffold. Moreover, periostin was successfully loaded onto the HAp/CS scaffold. When applied to the repair of bone defect in a rat mandibular model, the HAp/CS scaffold loaded with periostin can enhance osteointegration and accelerate bone regeneration. Our research combines periostin with the HAp/CS composite material, which provides a novel strategy to improve bone regeneration and has great application prospect in bone repair fields.
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Affiliation(s)
- Huachun Wang
- Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, 250012, China
- Department of Oral and Maxillofacial Surgery, Qilu Hospital of Shandong University, Qingdao, 266035, China
| | - Ruixue Sun
- College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, 266042, China
| | - Shengyun Huang
- Department of Stomatology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, 250012, China
| | - Haiwei Wu
- Department of Stomatology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, 250012, China
| | - Dongsheng Zhang
- Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, 250012, China
- Department of Stomatology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, 250012, China
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3
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Galotta A, Demir Ö, Marsan O, Sglavo VM, Loca D, Combes C, Locs J. Apatite/Chitosan Composites Formed by Cold Sintering for Drug Delivery and Bone Tissue Engineering Applications. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:441. [PMID: 38470772 DOI: 10.3390/nano14050441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Revised: 02/23/2024] [Accepted: 02/24/2024] [Indexed: 03/14/2024]
Abstract
In the biomedical field, nanocrystalline hydroxyapatite is still one of the most attractive candidates as a bone substitute material due to its analogies with native bone mineral features regarding chemical composition, bioactivity and osteoconductivity. Ion substitution and low crystallinity are also fundamental characteristics of bone apatite, making it metastable, bioresorbable and reactive. In the present work, biomimetic apatite and apatite/chitosan composites were produced by dissolution-precipitation synthesis, using mussel shells as a calcium biogenic source. With an eye on possible bone reconstruction and drug delivery applications, apatite/chitosan composites were loaded with strontium ranelate, an antiosteoporotic drug. Due to the metastability and temperature sensitivity of the produced composites, sintering could be carried out by conventional methods, and therefore, cold sintering was selected for the densification of the materials. The composites were consolidated up to ~90% relative density by applying a uniaxial pressure up to 1.5 GPa at room temperature for 10 min. Both the synthesised powders and cold-sintered samples were characterised from a physical and chemical point of view to demonstrate the effective production of biomimetic apatite/chitosan composites from mussel shells and exclude possible structural changes after sintering. Preliminary in vitro tests were also performed, which revealed a sustained release of strontium ranelate for about 19 days and no cytotoxicity towards human osteoblastic-like cells (MG63) exposed up to 72 h to the drug-containing composite extract.
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Affiliation(s)
- Anna Galotta
- Department of Industrial Engineering, University of Trento, Via Sommarive 9, 38123 Trento, Italy
| | - Öznur Demir
- Institute of Biomaterials and Bioengineering, Faculty of Natural Sciences and Technology, Riga Technical University, Pulka St. 3, LV-1007 Riga, Latvia
- Baltic Biomaterials Centre of Excellence, Riga Technical University, Pulka St. 3, LV-1007 Riga, Latvia
| | - Olivier Marsan
- CIRIMAT, Toulouse INP, Université Toulouse 3 Paul Sabatier, CNRS, Université de Toulouse, ENSIACET, 4 Allée Emile Monso, BP 44362, CEDEX 4, 31030 Toulouse, France
| | - Vincenzo M Sglavo
- Department of Industrial Engineering, University of Trento, Via Sommarive 9, 38123 Trento, Italy
| | - Dagnija Loca
- Institute of Biomaterials and Bioengineering, Faculty of Natural Sciences and Technology, Riga Technical University, Pulka St. 3, LV-1007 Riga, Latvia
- Baltic Biomaterials Centre of Excellence, Riga Technical University, Pulka St. 3, LV-1007 Riga, Latvia
| | - Christèle Combes
- CIRIMAT, Toulouse INP, Université Toulouse 3 Paul Sabatier, CNRS, Université de Toulouse, ENSIACET, 4 Allée Emile Monso, BP 44362, CEDEX 4, 31030 Toulouse, France
| | - Janis Locs
- Institute of Biomaterials and Bioengineering, Faculty of Natural Sciences and Technology, Riga Technical University, Pulka St. 3, LV-1007 Riga, Latvia
- Baltic Biomaterials Centre of Excellence, Riga Technical University, Pulka St. 3, LV-1007 Riga, Latvia
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4
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Iqbal Y, Ahmed I, Irfan MF, Chatha SAS, Zubair M, Ullah A. Recent advances in chitosan-based materials; The synthesis, modifications and biomedical applications. Carbohydr Polym 2023; 321:121318. [PMID: 37739510 DOI: 10.1016/j.carbpol.2023.121318] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 08/18/2023] [Accepted: 08/19/2023] [Indexed: 09/24/2023]
Abstract
The attention to polymer-based biomaterials, for instance, chitosan and its derivatives, as well as the techniques for using them in numerous scientific domains, is continuously rising. Chitosan is a decomposable naturally occurring polymeric material that is mostly obtained from seafood waste. Because of its special ecofriendly, biocompatible, non- toxic nature as well as antimicrobial properties, chitosan-based materials have received a lot of interest in the field of biomedical applications. The reactivity of chitosan is mainly because of the amino and hydroxyl groups in its composition, which makes it further fascinating for various uses, including biosensing, textile finishing, antimicrobial wound dressing, tissue engineering, bioimaging, gene, DNA and drug delivery and as a coating material for medical implants. This study is an overview of the different types of chitosan-based materials which now a days have been fabricated by applying different techniques and modifications that include etherification, esterification, crosslinking, graft copolymerization and o-acetylation etc. for hydroxyl groups' processes and acetylation, quaternization, Schiff's base reaction, and grafting for amino groups' reactions. Furthermore, this overview summarizes the literature from recent years related to the important applications of chitosan-based materials (i.e., thin films, nanocomposites or nanoparticles, sponges and hydrogels) in different biomedical applications.
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Affiliation(s)
- Yasir Iqbal
- Lipid Utilization, Polymers/Materials Chemistry Group, Department of Agriculture Food and Nutritional Science, University of Alberta, Edmonton, AB T6G 2P5, Canada; Department of Chemistry, Government College University Faisalabad, 38000, Pakistan
| | - Iqbal Ahmed
- Department of Chemistry, Government College University Faisalabad, 38000, Pakistan
| | - Muhammad Faisal Irfan
- Lipid Utilization, Polymers/Materials Chemistry Group, Department of Agriculture Food and Nutritional Science, University of Alberta, Edmonton, AB T6G 2P5, Canada
| | | | - Muhammad Zubair
- Lipid Utilization, Polymers/Materials Chemistry Group, Department of Agriculture Food and Nutritional Science, University of Alberta, Edmonton, AB T6G 2P5, Canada
| | - Aman Ullah
- Lipid Utilization, Polymers/Materials Chemistry Group, Department of Agriculture Food and Nutritional Science, University of Alberta, Edmonton, AB T6G 2P5, Canada.
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5
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Pelin IM, Popescu I, Calin M, Rebleanu D, Voicu G, Ionita D, Zaharia MM, Constantin M, Fundueanu G. Tri-Component Hydrogel as Template for Nanocrystalline Hydroxyapatite Deposition Using Alternate Soaking Method for Bone Tissue Engineering Applications. Gels 2023; 9:905. [PMID: 37998995 PMCID: PMC10671408 DOI: 10.3390/gels9110905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 11/08/2023] [Accepted: 11/15/2023] [Indexed: 11/25/2023] Open
Abstract
Composite hydrogels containing apatite-like particles can act as scaffolds for osteoblast proliferation, with applications in bone tissue engineering. In this respect, porous biocompatible hydrogels were obtained from chitosan, oxidized pullulan, and PVA in different ratios. The stability of the hydrogels was ensured both by covalent bonds between aldehyde groups of oxidized pullulan and free amino groups of chitosan, and by physical bonds formed during freeze-thaw cycles and lyophilization. The deposition of calcium phosphates was performed by alternate soaking of the porous hydrogels into solutions with calcium and phosphate ions, assuring a basic pH required for hydroxyapatite formation. The mineralized hydrogels were characterized using FTIR spectroscopy, scanning electron microscopy, X-ray diffraction, and thermogravimetric analysis, showing that inorganic particles containing between 80 and 92% hydroxyapatite were deposited in a high amount on the pore walls of the polymeric matrix. The composition of the organic matrix influenced the crystallization of calcium phosphates and the mechanical properties of the composite hydrogels. In vitro biological tests showed that mineralized hydrogels support the proliferation of MG-63 osteoblast-like cells to a greater extent compared to pristine hydrogels.
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Affiliation(s)
- Irina Mihaela Pelin
- “Petru Poni” Institute of Macromolecular Chemistry, Grigore Ghica Voda Alley 41A, 700487 Iasi, Romania; (I.M.P.); (D.I.); (M.-M.Z.); (G.F.)
| | - Irina Popescu
- “Petru Poni” Institute of Macromolecular Chemistry, Grigore Ghica Voda Alley 41A, 700487 Iasi, Romania; (I.M.P.); (D.I.); (M.-M.Z.); (G.F.)
| | - Manuela Calin
- Institute of Cellular Biology and Pathology “Nicolae Simionescu” of the Romanian Academy, 050568 Bucharest, Romania; (M.C.); (D.R.); (G.V.)
| | - Daniela Rebleanu
- Institute of Cellular Biology and Pathology “Nicolae Simionescu” of the Romanian Academy, 050568 Bucharest, Romania; (M.C.); (D.R.); (G.V.)
| | - Geanina Voicu
- Institute of Cellular Biology and Pathology “Nicolae Simionescu” of the Romanian Academy, 050568 Bucharest, Romania; (M.C.); (D.R.); (G.V.)
| | - Daniela Ionita
- “Petru Poni” Institute of Macromolecular Chemistry, Grigore Ghica Voda Alley 41A, 700487 Iasi, Romania; (I.M.P.); (D.I.); (M.-M.Z.); (G.F.)
| | - Marius-Mihai Zaharia
- “Petru Poni” Institute of Macromolecular Chemistry, Grigore Ghica Voda Alley 41A, 700487 Iasi, Romania; (I.M.P.); (D.I.); (M.-M.Z.); (G.F.)
| | - Marieta Constantin
- “Petru Poni” Institute of Macromolecular Chemistry, Grigore Ghica Voda Alley 41A, 700487 Iasi, Romania; (I.M.P.); (D.I.); (M.-M.Z.); (G.F.)
| | - Gheorghe Fundueanu
- “Petru Poni” Institute of Macromolecular Chemistry, Grigore Ghica Voda Alley 41A, 700487 Iasi, Romania; (I.M.P.); (D.I.); (M.-M.Z.); (G.F.)
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6
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Askary AE, Awwad NS, Ibrahium HA, Moustapha ME, Menazea AA. Thermal, optical and electrical properties of WO3/carboxymethyl cellulose/polyvinyl alcohol composite synthesized by laser ablation. JOURNAL OF POLYMER RESEARCH 2022. [DOI: 10.1007/s10965-022-02993-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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7
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Yang S, Luo T, Fan J, Zhou C, Hu M, Wang J, Wen L, Qin L, Liu G. Performance and Mechanisms of PropS-SH/HA Coatings in the Inhibition of Pyrite Oxidation. ACS OMEGA 2021; 6:32011-32021. [PMID: 34870024 PMCID: PMC8637958 DOI: 10.1021/acsomega.1c04793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Accepted: 11/02/2021] [Indexed: 05/17/2023]
Abstract
Acid mine drainage (AMD) entering the environment will cause long-term environmental pollution and ecological damage, the treatment or remediation for which has become a difficult worldwide problem. To control AMD at the source, a novel composite coating, hydroxyapatite (HA) as the filler embedded in a γ-mercaptopropyltrimethoxysilane (PropS-SH) coating, was introduced in this study. The performance and mechanisms of PropS-SH/HA coatings in the inhibition of pyrite oxidation were investigated by chemical leaching testing and material structure characterization. The results of the investigations revealed that the addition of an appropriate amount of HA can enhance the passivation efficiency of the PropS-SH coating. The best coating was obtained from 3% (v/v) of PropS-SH solution with 16 wt % HA, as this coating decreased pyrite oxidation by 78.7% (based on total Fe release). The main mechanism of PropS-SH/HA for the inhibition of pyrite oxidation involved the generation of a PropS-SH network through a polycondensation reaction. The addition of HA increased the stability of the passivation film composed of PropS-SH as well as the combining capacity of PropS-SH/HA through the formation of Si-O-Si and Fe-O-Si bonds, respectively.
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Affiliation(s)
- Shuang Yang
- State
Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, People’s Republic of China
- State
Environmental Protection Key Laboratory of Synergetic Control and
Joint Remediation for Soil & Water Pollution, Chengdu University of Technology, Chengdu 610059, People’s
Republic of China
- College
of Ecology and Environment, Chengdu University
of Technology, Chengdu 610059, People’s Republic of China
| | - Tianlie Luo
- State
Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, People’s Republic of China
- State
Environmental Protection Key Laboratory of Synergetic Control and
Joint Remediation for Soil & Water Pollution, Chengdu University of Technology, Chengdu 610059, People’s
Republic of China
- College
of Ecology and Environment, Chengdu University
of Technology, Chengdu 610059, People’s Republic of China
| | - Jiajun Fan
- State
Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, People’s Republic of China
- State
Environmental Protection Key Laboratory of Synergetic Control and
Joint Remediation for Soil & Water Pollution, Chengdu University of Technology, Chengdu 610059, People’s
Republic of China
- College
of Ecology and Environment, Chengdu University
of Technology, Chengdu 610059, People’s Republic of China
| | - Chengzhi Zhou
- Qingdao
Engineering Research Center for Rural Environment, College of Resource
and Environment, Qingdao Agricultural University, Qingdao 266109, People’s Republic of China
| | - Mengyao Hu
- State
Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, People’s Republic of China
- State
Environmental Protection Key Laboratory of Synergetic Control and
Joint Remediation for Soil & Water Pollution, Chengdu University of Technology, Chengdu 610059, People’s
Republic of China
- College
of Ecology and Environment, Chengdu University
of Technology, Chengdu 610059, People’s Republic of China
| | - Jinyu Wang
- State
Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, People’s Republic of China
- State
Environmental Protection Key Laboratory of Synergetic Control and
Joint Remediation for Soil & Water Pollution, Chengdu University of Technology, Chengdu 610059, People’s
Republic of China
- College
of Ecology and Environment, Chengdu University
of Technology, Chengdu 610059, People’s Republic of China
| | - Lijia Wen
- State
Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, People’s Republic of China
- State
Environmental Protection Key Laboratory of Synergetic Control and
Joint Remediation for Soil & Water Pollution, Chengdu University of Technology, Chengdu 610059, People’s
Republic of China
- College
of Ecology and Environment, Chengdu University
of Technology, Chengdu 610059, People’s Republic of China
| | - Li Qin
- State
Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, People’s Republic of China
- State
Environmental Protection Key Laboratory of Synergetic Control and
Joint Remediation for Soil & Water Pollution, Chengdu University of Technology, Chengdu 610059, People’s
Republic of China
- College
of Ecology and Environment, Chengdu University
of Technology, Chengdu 610059, People’s Republic of China
| | - Guo Liu
- State
Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, People’s Republic of China
- State
Environmental Protection Key Laboratory of Synergetic Control and
Joint Remediation for Soil & Water Pollution, Chengdu University of Technology, Chengdu 610059, People’s
Republic of China
- College
of Ecology and Environment, Chengdu University
of Technology, Chengdu 610059, People’s Republic of China
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8
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Synthesis of Inorganic Compounds in the Matrix of Polysaccharide Chitosan. Biomimetics (Basel) 2021; 6:biomimetics6030045. [PMID: 34287224 PMCID: PMC8293181 DOI: 10.3390/biomimetics6030045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2021] [Revised: 07/01/2021] [Accepted: 07/02/2021] [Indexed: 11/24/2022] Open
Abstract
Data related to the fabrication of hybrid materials based on the polysaccharide chitosan were systematized and reviewed. The possibility of using chitosan as a “host” matrix for in situ synthesis of inorganic compounds for the preparation of various types of composite materials were investigated. Coprecipitation of metal oxides/hydroxides (Fe, Ni, Al, Zr, Cu and Mn) with chitosan was carried out through the alkalinization of solutions containing metal salts and chitosan, with the addition of ammonia or alkali solutions, homogeneous hydrolysis of urea, or electrophoretic deposition on the cathode. The synthesis of transition metal ferrocyanides and hydroxyapatite was achieved from precursor salts in a chitosan solution with simultaneous alkalinization. The mechanism of composite formation during the coprecipitation process of inorganic compounds with chitosan is discussed. Composite materials are of interest as sorbents, coatings, sensors, and precursors for the production of ceramic and electrode materials.
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9
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Adamski R, Siuta D. Mechanical, Structural, and Biological Properties of Chitosan/Hydroxyapatite/Silica Composites for Bone Tissue Engineering. Molecules 2021; 26:molecules26071976. [PMID: 33807434 PMCID: PMC8037072 DOI: 10.3390/molecules26071976] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 03/26/2021] [Accepted: 03/28/2021] [Indexed: 01/04/2023] Open
Abstract
The aim of this work was to fabricate novel bioactive composites based on chitosan and non-organic silica, reinforced with calcium β-glycerophosphate (Ca-GP), sodium β-glycerophosphate pentahydrate (Na-GP), and hydroxyapatite powder (HAp) in a range of concentrations using the sol–gel method. The effect of HAp, Na-GP, and Ca-GP contents on the mechanical properties, i.e., Young’s modulus, compressive strength, and yield strain, of hybrid composites was analyzed. The microstructure of the materials obtained was visualized by SEM. Moreover, the molecular interactions according to FTIR analysis and biocompatibility of composites obtained were examined. The CS/Si/HAp/Ca-GP developed from all composites analyzed was characterized by the well-developed surface of pores of two sizes: large ones of 100 μm and many smaller pores below 10 µm, the behavior of which positively influenced cell proliferation and growth, as well as compressive strength in a range of 0.3 to 10 MPa, Young’s modulus from 5.2 to 100 MPa, and volumetric shrinkage below 60%. This proved to be a promising composite for applications in tissue engineering, e.g., filling small bone defects.
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10
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Menazea A, Ahmed M. Wound healing activity of Chitosan/Polyvinyl Alcohol embedded by gold nanoparticles prepared by nanosecond laser ablation. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.128401] [Citation(s) in RCA: 69] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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11
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Physico‐chemical, thermal, and mechanical properties of
PLA‐nHA
nanocomposites: Effect of glass fiber reinforcement. J Appl Polym Sci 2020. [DOI: 10.1002/app.49286] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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12
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Palaniraj S, Murugesan R, Narayan S. Chlorogenic acid- loaded calcium phosphate chitosan nanogel as biofilm degradative materials. Int J Biochem Cell Biol 2019; 114:105566. [PMID: 31283996 DOI: 10.1016/j.biocel.2019.105566] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Revised: 06/20/2019] [Accepted: 07/04/2019] [Indexed: 10/26/2022]
Abstract
This work describes an effort to develop an antimicrobial agent (chlorogenic acid - CGA) loaded porous nanogel based on calcium phosphate-chitosan (CaPNP@Chi) nanogel with biofilm degradative properties and has potential applications in restorative dentistry. The nanogel was prepared by ionic gelation of calcium phosphate nanoparticles and chitosan in the ratio of 1.25: 1. Chlorogenic acid was loaded to the nanoparticles as an ethanolic solution and the encapsulation efficiency determined by chromatographic techniques. The particle size and morphology of CaPNP@Chi and CaPNP@Chi@CGA was determined by dynamic light scattering and scanning electron microscopic techniques. The minimum inhibitory concentration against S. aureus and K. pneumoniae was determined through the well diffusion method. The biofilm formation and biofilm decay were studied through staining assays. The toxicity, if any of the nanogel was assessed by MTT assay against HaCaT cells. All data were statistically analyzed. The composite had a CGA encapsulation efficiency of 70% and was thermally stable up to 124 °C. The zone of inhibition was found to be 18.7 mm ± 0.6 against S. aureus. CaPNP@Chi@CGA showed a 68% increase in biofilm degradation when compared with the untreated group. Results obtained in this study suggest that the positively charged nanogel interacted with the bacterial cell membrane and brought about the disruption of the cell membrane. Also, CaPNP@Chi@CGA was observed to be nontoxic up to 40 μg/mL to HaCaT cells. These results support the potential of CaPNP@Chi@CGA nanogel for biofilm degradation and its application as filling material in restorative dentistry.
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Affiliation(s)
- Subitha Palaniraj
- Faculty of Allied Health Sciences, Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education, Kelambakkam, Tamilnadu, 603103, India
| | - Ramachandran Murugesan
- Faculty of Allied Health Sciences, Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education, Kelambakkam, Tamilnadu, 603103, India
| | - Shoba Narayan
- Faculty of Allied Health Sciences, Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education, Kelambakkam, Tamilnadu, 603103, India.
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13
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Design, synthesis and characterization of hydroxyapatite-chitosan nanocomposite radiolabelled with 153Sm as radiopharmaceutical for use in radiosynovectomy. RADIOCHIM ACTA 2019. [DOI: 10.1515/ract-2018-3038] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Abstract
The aim of the present study was to introduction of hydroxyapatite/chitosan nanocomposite as a new radiosynovectomy agent with excellent properties. In this work, the nanocomposite was prepared through a reliable method and characterized using different techniques to elucidate its chemical structure and physiochemical properties. The prepared nanocomposite was successfully radiolabeled with 153Sm under optimal conditions and with high radiolabelling yield (99 %). The radiochemical purity of the prepared radiopharmaceutical was found to be >99 % as determined by ITLC technique. In vitro stability studies in saline solution and in human serum showed that the radiolabeled nanocomposite retained its stability for at least 6 days. The biodistribution and imaging studies in wild-type rats revealed high retention of the agent into the synovial joints of the knee even at 96 h post-injection, thereby indicating excellent in vivo stability of 153Sm labeled hydroxyapatite-chitosan nanocomposite. Therefore, the prepared radiopharmaceutical would be a potential therapeutic agent for use in radiosynovectomy procedure.
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Kravanja G, Primožič M, Knez Ž, Leitgeb M. Chitosan-based (Nano)materials for Novel Biomedical Applications. Molecules 2019; 24:E1960. [PMID: 31117310 PMCID: PMC6572373 DOI: 10.3390/molecules24101960] [Citation(s) in RCA: 144] [Impact Index Per Article: 28.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Revised: 05/15/2019] [Accepted: 05/18/2019] [Indexed: 02/03/2023] Open
Abstract
Chitosan-based nanomaterials have attracted significant attention in the biomedical field because of their unique biodegradable, biocompatible, non-toxic, and antimicrobial nature. Multiple perspectives of the proposed antibacterial effect and mode of action of chitosan-based nanomaterials are reviewed. Chitosan is presented as an ideal biomaterial for antimicrobial wound dressings that can either be fabricated alone in its native form or upgraded and incorporated with antibiotics, metallic antimicrobial particles, natural compounds and extracts in order to increase the antimicrobial effect. Since chitosan and its derivatives can enhance drug permeability across the blood-brain barrier, they can be also used as effective brain drug delivery carriers. Some of the recent chitosan formulations for brain uptake of various drugs are presented. The use of chitosan and its derivatives in other biomedical applications is also briefly discussed.
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Affiliation(s)
- Gregor Kravanja
- University of Maribor; Faculty of Chemistry and Chemical Engineering; Laboratory for Separation Processes and Product Design; Smetanova ul. 17, 2000 Maribor, Slovenia.
| | - Mateja Primožič
- University of Maribor; Faculty of Chemistry and Chemical Engineering; Laboratory for Separation Processes and Product Design; Smetanova ul. 17, 2000 Maribor, Slovenia.
| | - Željko Knez
- University of Maribor; Faculty of Chemistry and Chemical Engineering; Laboratory for Separation Processes and Product Design; Smetanova ul. 17, 2000 Maribor, Slovenia.
- University of Maribor, Faculty of Medicine, Taborska ulica 8, 2000 Maribor, Slovenia.
| | - Maja Leitgeb
- University of Maribor; Faculty of Chemistry and Chemical Engineering; Laboratory for Separation Processes and Product Design; Smetanova ul. 17, 2000 Maribor, Slovenia.
- University of Maribor, Faculty of Medicine, Taborska ulica 8, 2000 Maribor, Slovenia.
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15
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Skwarek E, Goncharuk O, Sternik D, Janusz W, Gdula K, Gun’ko VM. Synthesis, Structural, and Adsorption Properties and Thermal Stability of Nanohydroxyapatite/Polysaccharide Composites. NANOSCALE RESEARCH LETTERS 2017; 12:155. [PMID: 28249373 PMCID: PMC5328890 DOI: 10.1186/s11671-017-1911-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2016] [Accepted: 02/09/2017] [Indexed: 06/01/2023]
Abstract
A series of composites based on nanohydroxyapatite (nHAp) and natural polysaccharides (PS) (nHAp/agar, nHAp/chitosan, nHAp/pectin FB300, nHAp/pectin APA103, nHAp/sodium alginate) was synthesized by liquid-phase two-step method and characterized using nitrogen adsorption-desorption, DSC, TG, FTIR spectroscopy, and SEM. The analysis of nitrogen adsorption-desorption data shows that composites with a nHAp: PS ratio of 4:1 exhibit a sufficiently high specific surface area from 49 to 82 m2/g. The incremental pore size distributions indicate mainly mesoporosity. The composites with the component ratio 1:1 preferably form a film-like structure, and the value of S BET varies from 0.3 to 43 m2/g depending on the nature of a polysaccharide. Adsorption of Sr(II) on the composites from the aqueous solutions has been studied. The thermal properties of polysaccharides alone and in nHAp/PS show the influence of nHAp, since there is a shift of characteristic DSC and DTG peaks. FTIR spectroscopy data confirm the presence of functional groups typical for nHAp as well as polysaccharides in composites. Structure and morphological characteristics of the composites are strongly dependent on the ratio of components, since nHAp/PS at 4:1 have relatively large S BET values and a good ability to adsorb metal ions. The comparison of the adsorption capacity with respect to Sr(II) of nHAp, polysaccharides, and composites shows that it of the latter is higher than that of nHAp (per 1 m2 of surface).
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Affiliation(s)
- Ewa Skwarek
- Department of Radiochemistry and Colloids Chemistry, Faculty of Chemistry, Maria Curie-Sklodowska University, M. Curie-Sklodowska Sq. 3, 20-031 Lublin, Poland
| | - Olena Goncharuk
- Chuiko Institute of Surface Chemistry, National Academy of Science of Ukraine, 17 General Naumov Street, 03164 Kiev, Ukraine
| | - Dariusz Sternik
- Department of Physicochemistry of Solid Surface, Faculty of Chemistry, Maria Curie-Sklodowska University, M. Curie-Sklodowska Sq. 3, 20-031 Lublin, Poland
| | - Wladyslaw Janusz
- Department of Radiochemistry and Colloids Chemistry, Faculty of Chemistry, Maria Curie-Sklodowska University, M. Curie-Sklodowska Sq. 3, 20-031 Lublin, Poland
| | - Karolina Gdula
- Department of Theoretical Chemistry, Faculty of Chemistry, Maria Curie-Sklodowska University, M. Curie-Sklodowska Sq. 3, 20-031 Lublin, Poland
| | - Vladimir M. Gun’ko
- Chuiko Institute of Surface Chemistry, National Academy of Science of Ukraine, 17 General Naumov Street, 03164 Kiev, Ukraine
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A Novel Method to Improve the Anticancer Activity of Natural-Based Hydroxyapatite against the Liver Cancer Cell Line HepG2 Using Mesoporous Magnesia as a Micro-Carrier. Molecules 2017; 22:molecules22121947. [PMID: 29186752 PMCID: PMC6149827 DOI: 10.3390/molecules22121947] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Revised: 10/30/2017] [Accepted: 11/08/2017] [Indexed: 01/22/2023] Open
Abstract
Micro-carriers are the best known vehicles to transport different kinds of drugs to achieve high impact. In this study, mesoporous magnesium oxide has been harnessed as a micro-carrier to encapsulate the anticancer candidate drug natural-based cubic hydroxyapatite (HAP). HAP@MgO composites with different HAP loading (0-60 wt %), were prepared by a hydrothermal treatment method using triethanol amine as a template. The characterization of the prepared composites were achieved by using XRD, Raman spectroscopy, FTIR and SEM. Characterization data confirm the formation of sphere-like structures of MgO containing HAP particles. It was observed that the size of the spheres increased with HAP loading up to 40 wt %, then collapsed. Furthermore, the anticancer property of the prepared composites was evaluated against the HepG2 liver cancer cell line. The HAP@MgO composites exhibited higher activity than neat MgO or HAP. The 20 wt % of HAP was the optimum loading to control cell proliferation by inducing apoptosis. Apoptosis was determined by typical apoptotic bodies produced by the cell membrane.
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17
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Functionalized biomimetic calcium phosphates for bone tissue repair. J Appl Biomater Funct Mater 2017; 15:e313-e325. [PMID: 28574097 DOI: 10.5301/jabfm.5000367] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/11/2017] [Indexed: 12/17/2022] Open
Abstract
The design and development of novel materials for biomineralized tissues is an extremely attractive field of research where calcium phosphates (CaPs)-based materials for biomedical applications play a leading role. The biological performance of these compounds can be enhanced through functionalization with biologically active ions and molecules. This review reports on some important recent achievements in creating functionalized biomimetic CaP materials for applications in the musculoskeletal field. Particular attention is focused on the modifications of these inorganic compounds with bioactive ions, growth factors and drugs, as well as on recent trends in some important CaP applications as biomaterials - namely, as bone cements, coatings of metallic implants and scaffolds for regenerative medicine.
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18
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Hu Y, Chen J, Fan T, Zhang Y, Zhao Y, Shi X, Zhang Q. Biomimetic mineralized hierarchical hybrid scaffolds based on in situ synthesis of nano-hydroxyapatite/chitosan/chondroitin sulfate/hyaluronic acid for bone tissue engineering. Colloids Surf B Biointerfaces 2017; 157:93-100. [DOI: 10.1016/j.colsurfb.2017.05.059] [Citation(s) in RCA: 73] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2017] [Revised: 05/13/2017] [Accepted: 05/23/2017] [Indexed: 01/07/2023]
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Mansour SF, El-dek SI, Dorozhkin SV, Ahmed MK. Physico-mechanical properties of Mg and Ag doped hydroxyapatite/chitosan biocomposites. NEW J CHEM 2017; 41:13773-13783. [DOI: 10.1039/c7nj01777d] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/02/2024]
Abstract
Co-Substituted hydroxyapatite Mg–Ag-HAP/chitosan biocomposites were synthesized successfully using a simple chemical method, and the compressive strength progressed up to 15.2 MPa atx= 0.8.
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Affiliation(s)
- S. F. Mansour
- Physics Department
- Faculty of Science
- Zagazig University
- Egypt
| | - S. I. El-dek
- Materials Science and Nanotechnology Department
- Faculty of Postgraduate Studies for Advanced Sciences
- Beni-Suef University
- Egypt
| | | | - M. K. Ahmed
- Physics Department
- Faculty of Science
- Zagazig University
- Egypt
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20
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Fan T, Chen J, Pan P, Zhang Y, Hu Y, Liu X, Shi X, Zhang Q. Bioinspired double polysaccharides-based nanohybrid scaffold for bone tissue engineering. Colloids Surf B Biointerfaces 2016; 147:217-223. [DOI: 10.1016/j.colsurfb.2016.08.006] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Revised: 07/07/2016] [Accepted: 08/04/2016] [Indexed: 01/01/2023]
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21
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Klinkaewnarong J, Utara S. Preparation and characterization of nanohydroxyapatite by modified sol-gel method with natural rubber latex as a templating agent. INORG NANO-MET CHEM 2016. [DOI: 10.1080/15533174.2016.1186045] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
| | - Songkot Utara
- Division of Chemistry, Faculty of Science, Udon Thani Rajabhat University, Udon Thani, Thailand
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22
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Affiliation(s)
- Alina Sionkowska
- Department of Chemistry of Biomaterials and Cosmetics, Faculty of Chemistry; Nicolaus Copernicus University in Toruń; Poland
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23
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An overview of chitin or chitosan/nano ceramic composite scaffolds for bone tissue engineering. Int J Biol Macromol 2016; 93:1338-1353. [PMID: 27012892 DOI: 10.1016/j.ijbiomac.2016.03.041] [Citation(s) in RCA: 134] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2016] [Revised: 03/03/2016] [Accepted: 03/20/2016] [Indexed: 01/06/2023]
Abstract
Chitin and chitosan based nanocomposite scaffolds have been widely used for bone tissue engineering. These chitin and chitosan based scaffolds were reinforced with nanocomponents viz Hydroxyapatite (HAp), Bioglass ceramic (BGC), Silicon dioxide (SiO2), Titanium dioxide (TiO2) and Zirconium oxide (ZrO2) to develop nanocomposite scaffolds. Plenty of works have been reported on the applications and characteristics of the nanoceramic composites however, compiling the work done in this field and presenting it in a single article is a thrust area. This review is written with an aim to fill this gap and focus on the preparations and applications of chitin or chitosan/nHAp, chitin or chitosan/nBGC, chitin or chitosan/nSiO2, chitin or chitosan/nTiO2 and chitin or chitosan/nZrO2 in the field of bone tissue engineering in detail. Many reports so far exemplify the importance of ceramics in bone regeneration. The effect of nanoceramics over native ceramics in developing composites, its role in osteogenesis etc. are the gist of this review.
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24
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Tsiourvas D, Tsetsekou A, Kammenou MI, Boukos N. Biomimetic synthesis of ribbon-like hydroxyapatite employing poly( l -arginine). MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 58:1225-31. [DOI: 10.1016/j.msec.2015.09.076] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2015] [Revised: 09/14/2015] [Accepted: 09/19/2015] [Indexed: 02/04/2023]
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25
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Rogina A, Rico P, Gallego Ferrer G, Ivanković M, Ivanković H. In Situ Hydroxyapatite Content Affects the Cell Differentiation on Porous Chitosan/Hydroxyapatite Scaffolds. Ann Biomed Eng 2015; 44:1107-19. [DOI: 10.1007/s10439-015-1418-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2015] [Accepted: 08/04/2015] [Indexed: 12/27/2022]
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26
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Ectopic osteogenesis and scaffold biodegradation of nano-hydroxyapatite-chitosan in a rat model. PLoS One 2015; 10:e0135366. [PMID: 26258851 PMCID: PMC4530870 DOI: 10.1371/journal.pone.0135366] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2014] [Accepted: 07/21/2015] [Indexed: 11/19/2022] Open
Abstract
The bone-formation and scaffold-biodegradation processes have not been fully characterized. This study aimed to determine the osteogenic ability of nHA-CS osteo-induced bone marrow mesenchymal stem cell (BMSC) composites and to explore the relationship between bone formation and scaffold biodegradation. The nHA-CS osteo-induced BMSC composites (nHA-CS+cells group) and the nHA-CS scaffolds (nHA-CS group) were implanted into the femoral spatium intermusculare of SD rats. At 2, 4, 6, 8, and 12 weeks post-implantation, the rat femurs were scanned using computerized tomography (CT), and the CT values of the implants were measured and comparatively analyzed. The implants were then harvested and subjected to hematoxylin and eosin (HE) and Masson's trichrome staining, and the percentages of bone area, scaffold area and collagen area were compared between the two groups. The CT values of the implants were higher in the nHA-CS+cells group than the nHA-CS group at the same time points (P < 0.05). Histological analysis revealed that de novo bone and collagen formation in the pores of the scaffolds gradually increased from 2 weeks post-implantation in both groups and that the scaffold gradually degraded as bone formation proceeded. However, more de novo bone and collagen formation and scaffold degradation occurred in the nHA-CS+cells group than in the nHA-CS group at the same time points (P < 0.05). In conclusion, nHA-CS osteo-induced BMSC composites are promising bone tissue engineering substitutes, and osteo-induced BMSCs can significantly enhance the osteogenic ability and play an active role in the degradation of nHA-CS scaffolds on par with bone formation.
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27
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Rogina A, Rico P, Gallego Ferrer G, Ivanković M, Ivanković H. Effect of in situ formed hydroxyapatite on microstructure of freeze-gelled chitosan-based biocomposite scaffolds. Eur Polym J 2015. [DOI: 10.1016/j.eurpolymj.2015.05.004] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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28
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Zeng M, Yuan X, Zuo S, Qi C. Novel chitosan-based/montmorillonite/palladium hybrid microspheres as heterogeneous catalyst for Sonogashira reactions. RSC Adv 2015. [DOI: 10.1039/c5ra01902h] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The objective of this study was to develop novel chitosan-based/montmorillonite/palladium (CS/MMT/Pd) hybrid microsphere catalysts with improved properties for use in Sonogashira reactions.
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Affiliation(s)
- Minfeng Zeng
- Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process
- Shaoxing University
- Shaoxing
- China
| | - Xia Yuan
- Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process
- Shaoxing University
- Shaoxing
- China
- The School of Material Science and Chemical Engineering
| | - Shufeng Zuo
- Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process
- Shaoxing University
- Shaoxing
- China
| | - Chenze Qi
- Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process
- Shaoxing University
- Shaoxing
- China
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29
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Yasmeen S, Lo MK, Bajracharya S, Roldo M. Injectable scaffolds for bone regeneration. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:12977-12985. [PMID: 25296391 DOI: 10.1021/la503057w] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Clinical treatments of significant bone defects involve invasive procedures such as the application of auto- and allografts. These procedures present many limitations including the potential for infection and rejection. There is therefore a need to develop novel therapeutic strategies able to exploit the natural regenerative potential of bone and that can be delivered in a less invasive manner. Among the materials studied for the development of novel scaffolds, stimuli-responsive gels containing hydroxyapatite and carbon nanotubes as nanofillers have generated great interest. In the present work, chitosan gels containing chitosan grafted CNTs and chitosan-hydroxyapatite complex have been formed by cross-linking with glycerol phosphate. The addition of the nanofillers afforded hydrogels with a faster sol/gel transition at 37 °C and enhanced mechanical properties. The thermosensitive composite gels also showed a good bioactivity profile associated with potential for the prolonged delivery of protein drugs. The inclusion of chemically cross-linked CNTs and HA in thermosensitive gels afforded injectable composite materials with enhanced properties, including reduction of gelation time, improved mechanical properties, good bioactivity, and prolonged drug release.
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Affiliation(s)
- Sabina Yasmeen
- School of Pharmacy and Biomedical Science, University of Portsmouth , St. Michael's Building, White Swan Road, Portsmouth, UK
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30
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Liu Z, Qu S, Zheng X, Xiong X, Fu R, Tang K, Zhong Z, Weng J. Effect of polydopamine on the biomimetic mineralization of mussel-inspired calcium phosphate cement in vitro. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 44:44-51. [DOI: 10.1016/j.msec.2014.07.063] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2014] [Revised: 06/27/2014] [Accepted: 07/27/2014] [Indexed: 10/24/2022]
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31
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Sofronia AM, Baies R, Anghel EM, Marinescu CA, Tanasescu S. Thermal and structural characterization of synthetic and natural nanocrystalline hydroxyapatite. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 43:153-63. [PMID: 25175200 DOI: 10.1016/j.msec.2014.07.023] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2013] [Revised: 05/15/2014] [Accepted: 07/03/2014] [Indexed: 10/25/2022]
Abstract
The aim of this work was to study the thermal stability on heating and to obtain the processing parameters of synthetic and bone-derived hydroxyapatite over temperatures between room temperature and 1400°C by thermal analysis (thermogravimetry (TG)/differential scanning calorimetry (DSC) and thermo-mechanical analysis-TMA). Structural and surface modifications related to samples origin and calcination temperature were investigated by Fourier transformed infrared (FTIR) and Raman spectroscopy, X-ray diffraction (XRD) and BET method. FTIR spectra indicated that the organic constituents and carbonate are no longer present in the natural sample calcined at 800°C. Raman spectra highlighted the decomposition products of the hydroxyapatite. The calcination treatment modifies the processes kinetics of the synthetic samples, being able to isolate lattice water desorption processes of decarbonization and the dehydroxylation processes. Shrinkage of calcined synthetic sample increases by 10% compared to uncalcined synthetic powder. From the TMA correlated with TG analysis and heat capacity data it can be concluded that sintering temperature of the synthetic samples should be chosen in the temperature range of the onset of dehydroxylation and the temperature at which oxyapatite decomposition begins.
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Affiliation(s)
- Ancuta M Sofronia
- Ilie Murgulescu Institute of Physical Chemistry of the Romanian Academy, 060021 Bucharest, Romania
| | - Radu Baies
- National Research Institute for Electrochemistry and Condensed Matter, 300224 Timisoara, Romania
| | - Elena M Anghel
- Ilie Murgulescu Institute of Physical Chemistry of the Romanian Academy, 060021 Bucharest, Romania
| | - Cornelia A Marinescu
- Ilie Murgulescu Institute of Physical Chemistry of the Romanian Academy, 060021 Bucharest, Romania.
| | - Speranta Tanasescu
- Ilie Murgulescu Institute of Physical Chemistry of the Romanian Academy, 060021 Bucharest, Romania
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