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Sadowska JM, Power RN, Genoud KJ, Matheson A, González-Vázquez A, Costard L, Eichholz K, Pitacco P, Hallegouet T, Chen G, Curtin CM, Murphy CM, Cavanagh B, Zhang H, Kelly DJ, Boccaccini AR, O'Brien FJ. A Multifunctional Scaffold for Bone Infection Treatment by Delivery of microRNA Therapeutics Combined With Antimicrobial Nanoparticles. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2307639. [PMID: 38009631 DOI: 10.1002/adma.202307639] [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: 07/31/2023] [Revised: 11/18/2023] [Indexed: 11/29/2023]
Abstract
Treating bone infections and ensuring bone repair is one of the greatest global challenges of modern orthopedics, made complex by antimicrobial resistance (AMR) risks due to long-term antibiotic treatment and debilitating large bone defects following infected tissue removal. An ideal multi-faceted solution would will eradicate bacterial infection without long-term antibiotic use, simultaneously stimulating osteogenesis and angiogenesis. Here, a multifunctional collagen-based scaffold that addresses these needs by leveraging the potential of antibiotic-free antimicrobial nanoparticles (copper-doped bioactive glass, CuBG) to combat infection without contributing to AMR in conjunction with microRNA-based gene therapy (utilizing an inhibitor of microRNA-138) to stimulate both osteogenesis and angiogenesis, is developed. CuBG scaffolds reduce the attachment of gram-positive bacteria by over 80%, showcasing antimicrobial functionality. The antagomiR-138 nanoparticles induce osteogenesis of human mesenchymal stem cells in vitro and heal a large load-bearing defect in a rat femur when delivered on the scaffold. Combining both promising technologies results in a multifunctional antagomiR-138-activated CuBG scaffold inducing hMSC-mediated osteogenesis and stimulating vasculogenesis in an in vivo chick chorioallantoic membrane model. Overall, this multifunctional scaffold catalyzes killing mechanisms in bacteria while inducing bone repair through osteogenic and angiogenic coupling, making this platform a promising multi-functional strategy for treating and repairing complex bone infections.
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Affiliation(s)
- Joanna M Sadowska
- Tissue Engineering Research Group, Dept. of Anatomy and Regenerative Medicine, Royal College of Surgeons in Ireland (RCSI) University of Medicine and Health Sciences, Dublin, D02 YN77, Ireland
| | - Rachael N Power
- Tissue Engineering Research Group, Dept. of Anatomy and Regenerative Medicine, Royal College of Surgeons in Ireland (RCSI) University of Medicine and Health Sciences, Dublin, D02 YN77, Ireland
| | - Katelyn J Genoud
- Tissue Engineering Research Group, Dept. of Anatomy and Regenerative Medicine, Royal College of Surgeons in Ireland (RCSI) University of Medicine and Health Sciences, Dublin, D02 YN77, Ireland
- Advanced Materials and Bioengineering Research Centre (AMBER), Royal College of Surgeons in Ireland (RCSI) University of Medicine and Health Sciences and Trinity College Dublin (TCD), Dublin, D02 W085, Ireland
| | - Austyn Matheson
- Tissue Engineering Research Group, Dept. of Anatomy and Regenerative Medicine, Royal College of Surgeons in Ireland (RCSI) University of Medicine and Health Sciences, Dublin, D02 YN77, Ireland
- Advanced Materials and Bioengineering Research Centre (AMBER), Royal College of Surgeons in Ireland (RCSI) University of Medicine and Health Sciences and Trinity College Dublin (TCD), Dublin, D02 W085, Ireland
| | - Arlyng González-Vázquez
- Tissue Engineering Research Group, Dept. of Anatomy and Regenerative Medicine, Royal College of Surgeons in Ireland (RCSI) University of Medicine and Health Sciences, Dublin, D02 YN77, Ireland
| | - Lara Costard
- Tissue Engineering Research Group, Dept. of Anatomy and Regenerative Medicine, Royal College of Surgeons in Ireland (RCSI) University of Medicine and Health Sciences, Dublin, D02 YN77, Ireland
| | - Kian Eichholz
- Advanced Materials and Bioengineering Research Centre (AMBER), Royal College of Surgeons in Ireland (RCSI) University of Medicine and Health Sciences and Trinity College Dublin (TCD), Dublin, D02 W085, Ireland
- Trinity Centre for Biomedical Engineering, Trinity College Dublin (TCD), Dublin, D02 R590, Ireland
| | - Pierluca Pitacco
- Advanced Materials and Bioengineering Research Centre (AMBER), Royal College of Surgeons in Ireland (RCSI) University of Medicine and Health Sciences and Trinity College Dublin (TCD), Dublin, D02 W085, Ireland
- Trinity Centre for Biomedical Engineering, Trinity College Dublin (TCD), Dublin, D02 R590, Ireland
| | - Tanguy Hallegouet
- Tissue Engineering Research Group, Dept. of Anatomy and Regenerative Medicine, Royal College of Surgeons in Ireland (RCSI) University of Medicine and Health Sciences, Dublin, D02 YN77, Ireland
- University of Strasbourg, Strasbourg, 67412, France
| | - Gang Chen
- Microsurgical Research and Training Facility (MRTF), Royal College of Surgeons in Ireland (RCSI) University of Medicine and Health Sciences, Dublin, D02 YN77, Ireland
| | - Caroline M Curtin
- Tissue Engineering Research Group, Dept. of Anatomy and Regenerative Medicine, Royal College of Surgeons in Ireland (RCSI) University of Medicine and Health Sciences, Dublin, D02 YN77, Ireland
- Advanced Materials and Bioengineering Research Centre (AMBER), Royal College of Surgeons in Ireland (RCSI) University of Medicine and Health Sciences and Trinity College Dublin (TCD), Dublin, D02 W085, Ireland
- Trinity Centre for Biomedical Engineering, Trinity College Dublin (TCD), Dublin, D02 R590, Ireland
| | - Ciara M Murphy
- Tissue Engineering Research Group, Dept. of Anatomy and Regenerative Medicine, Royal College of Surgeons in Ireland (RCSI) University of Medicine and Health Sciences, Dublin, D02 YN77, Ireland
- Advanced Materials and Bioengineering Research Centre (AMBER), Royal College of Surgeons in Ireland (RCSI) University of Medicine and Health Sciences and Trinity College Dublin (TCD), Dublin, D02 W085, Ireland
- Trinity Centre for Biomedical Engineering, Trinity College Dublin (TCD), Dublin, D02 R590, Ireland
| | - Brenton Cavanagh
- Cellular and Molecular Imaging Core, Royal College of Surgeons in Ireland (RCSI) University of Medicine and Health Sciences, Dublin, D02 YN77, Ireland
| | - Huijun Zhang
- Institute of Biomaterials, Friedrich-Alexander University Erlangen-Nuremberg, 91056, Erlangen, Germany
| | - Daniel J Kelly
- Tissue Engineering Research Group, Dept. of Anatomy and Regenerative Medicine, Royal College of Surgeons in Ireland (RCSI) University of Medicine and Health Sciences, Dublin, D02 YN77, Ireland
- Advanced Materials and Bioengineering Research Centre (AMBER), Royal College of Surgeons in Ireland (RCSI) University of Medicine and Health Sciences and Trinity College Dublin (TCD), Dublin, D02 W085, Ireland
- Trinity Centre for Biomedical Engineering, Trinity College Dublin (TCD), Dublin, D02 R590, Ireland
| | - Aldo R Boccaccini
- Institute of Biomaterials, Friedrich-Alexander University Erlangen-Nuremberg, 91056, Erlangen, Germany
| | - Fergal J O'Brien
- Tissue Engineering Research Group, Dept. of Anatomy and Regenerative Medicine, Royal College of Surgeons in Ireland (RCSI) University of Medicine and Health Sciences, Dublin, D02 YN77, Ireland
- Advanced Materials and Bioengineering Research Centre (AMBER), Royal College of Surgeons in Ireland (RCSI) University of Medicine and Health Sciences and Trinity College Dublin (TCD), Dublin, D02 W085, Ireland
- Trinity Centre for Biomedical Engineering, Trinity College Dublin (TCD), Dublin, D02 R590, Ireland
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Ciaffaglione V, Rizzarelli E. Carnosine, Zinc and Copper: A Menage a Trois in Bone and Cartilage Protection. Int J Mol Sci 2023; 24:16209. [PMID: 38003398 PMCID: PMC10671046 DOI: 10.3390/ijms242216209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 10/31/2023] [Accepted: 11/09/2023] [Indexed: 11/26/2023] Open
Abstract
Dysregulated metal homeostasis is associated with many pathological conditions, including arthritic diseases. Osteoarthritis and rheumatoid arthritis are the two most prevalent disorders that damage the joints and lead to cartilage and bone destruction. Recent studies show that the levels of zinc (Zn) and copper (Cu) are generally altered in the serum of arthritis patients. Therefore, metal dyshomeostasis may reflect the contribution of these trace elements to the disease's pathogenesis and manifestations, suggesting their potential for prognosis and treatment. Carnosine (Car) also emerged as a biomarker in arthritis and exerts protective and osteogenic effects in arthritic joints. Notably, its zinc(II) complex, polaprezinc, has been recently proposed as a drug-repurposing candidate for bone fracture healing. On these bases, this review article aims to provide an overview of the beneficial roles of Cu and Zn in bone and cartilage health and their potential application in tissue engineering. The effects of Car and polaprezinc in promoting cartilage and bone regeneration are also discussed. We hypothesize that polaprezinc could exchange Zn for Cu, present in the culture media, due to its higher sequestering ability towards Cu. However, future studies should unveil the potential contribution of Cu in the beneficial effects of polaprezinc.
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Affiliation(s)
- Valeria Ciaffaglione
- Institute of Crystallography, National Council of Research (CNR), P. Gaifami 18, 95126 Catania, Italy
| | - Enrico Rizzarelli
- Institute of Crystallography, National Council of Research (CNR), P. Gaifami 18, 95126 Catania, Italy
- Department of Chemical Sciences, University of Catania, Viale Andrea Doria 6, 95125 Catania, Italy
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3
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Demirel B, Erol Taygun M. Antibacterial Borosilicate Glass and Glass Ceramic Materials Doped with ZnO for Usage in the Pharmaceutical Industry. ACS OMEGA 2023; 8:18735-18742. [PMID: 37273588 PMCID: PMC10233686 DOI: 10.1021/acsomega.3c00720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Accepted: 05/09/2023] [Indexed: 06/06/2023]
Abstract
The aim of this study is producing and characterizing borosilicate glass and glass ceramic materials with enhanced antibacterial properties by using the conventional melting method. First of all, borosilicate glass doped with ZnO was obtained and after that the crystallization temperature was detected by using differential thermal analysis for the production of borosilicate glass ceramic doped with ZnO. The antibacterial and leaching tests showed that the glass and glass ceramic doped with 5% ZnO were suitable samples according to test results. Physical, thermal, and mechanical properties of the glass and glass ceramic doped with 5% ZnO were also determined. Overall results indicated that the obtained antibacterial borosilicate glass could be a remarkable product for the pharmaceutical industry, especially for usage in drug packaging.
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Affiliation(s)
- Barış Demirel
- Department
of Chemical Engineering, Istanbul Technical
University, Maslak, Istanbul 34469, Turkey
- Sisecam
Science Technology and Design Center, Gebze, Kocaeli 41400, Turkey
| | - Melek Erol Taygun
- Department
of Chemical Engineering, Istanbul Technical
University, Maslak, Istanbul 34469, Turkey
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4
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The role of copper chromite nanoparticles on physical and bio properties of scaffolds based on poly(glycerol-azelaic acid) for application in tissue engineering fields. Cell Tissue Res 2023; 391:357-373. [PMID: 36454270 DOI: 10.1007/s00441-022-03708-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2022] [Accepted: 11/06/2022] [Indexed: 12/05/2022]
Abstract
Tissue engineering combines suitable cells, engineering methods, and proper biochemical factors to develop functional and biological tissues and repair damaged tissues. In this study, we focused on synthesizing and characterizing a nanocomposite scaffold based on glycerol and azelaic acid (Gl-Az) combined with copper chromite (CuCr2O4) nanoparticles in order to increase the osteogenic differentiation efficiency of human adipose-derived stem cells (hADSCs) on fabricated scaffolds. The degradability and hydrophobicity properties as well as mechanical and thermal behaviors of nanocomposite scaffolds were investigated. Next, the cell toxicity of glycerol, azelaic acid and CuCr2O4 nanoparticles was studied by MTT assay test and acridine orange staining. Finally, the osteogenic differentiation of hADSCs on Gl-Az-CuCr2O4 scaffolds was examined using alkaline phosphatase activity (ALP) and calcium content. The obtained results demonstrated that Gl-Az-1%CuCr2O4 not only showed appropriate mechanical strength, biocompatibility and degradability but also influenced the capability of hADSCs to differentiate into osteogenic lineages. The hADSCs culture in Gl-Az-1%CuCr2O4 showed a significant increase in ALP activity levels and calcium biomineralization after 14 days of osteogenic differentiation. In conclusion, the Gl-Az-1%CuCr2O4 nanocomposite could be used as a biocompatible and degradable scaffold to induce the bone differentiation of hADSCs and it could be a promising scaffold in bone regenerative medicine.
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Schwartz T, Schewe N, Schwotzer M, Heinle M, Mahmood A, Krolla P, Thissen P. Antibacterial Inorganic Coating of Calcium Silicate Hydrate Substrates by Copper Incorporation. ACS APPLIED BIO MATERIALS 2022; 5:5190-5198. [PMID: 36280235 PMCID: PMC9683100 DOI: 10.1021/acsabm.2c00616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Accepted: 10/05/2022] [Indexed: 01/25/2023]
Abstract
Under environmental conditions, biofilms can oftentimes be found on different surfaces, accompanied by the structural degradation of the substrate. Since high-copper-content paints were banned in the EU, a solution for the protection of these surfaces has to be found. In addition to hydrophobation, making the surfaces inherently biofilm-repellent is a valid strategy. We want to accomplish this via the metal exchange in calcium silicate hydrate (CSH) substrates with transition metals. As has been shown with Europium, even small amounts of metal can have a great influence on the material properties. To effectively model CSH surfaces, ultrathin CSH films were grown on silicon wafers using Ca(OH)2 solutions. Subsequently, copper was incorporated as an active component via ion exchange. Biofilm development is quantified using a multiple-resistant Pseudomonas aeruginosa strain described as a strong biofilm former cultivated in the culture medium for 24 h. Comprehensive structural and chemical analyses of the substrates are done by environmental scanning electron microscopy (ESEM), transmission Fourier transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), and time-of-flight secondary ion mass spectrometry (ToF-SIMS). Results do not show any structural deformation of the substrates by the incorporation of the Cu combined with three-dimensional (3D) homogeneous distribution. While the copper-free CSH phase shows a completely random distribution of the bacteria in biofilms, the samples with copper incorporation reveal lower bacterial colonization of the modified surfaces with an enhanced cluster formation.
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Affiliation(s)
- Thomas Schwartz
- Institut
für Funktionelle Grenzflächen (IFG), Karlsruher Institut für Technologie (KIT), Hermann-von-Helmholtz-Platz 1, 76344Eggenstein-Leopoldshafen, Deutschland
| | - Nils Schewe
- Institut
für Funktionelle Grenzflächen (IFG), Karlsruher Institut für Technologie (KIT), Hermann-von-Helmholtz-Platz 1, 76344Eggenstein-Leopoldshafen, Deutschland
| | - Matthias Schwotzer
- Institut
für Funktionelle Grenzflächen (IFG), Karlsruher Institut für Technologie (KIT), Hermann-von-Helmholtz-Platz 1, 76344Eggenstein-Leopoldshafen, Deutschland
| | - Marita Heinle
- Institut
für Funktionelle Grenzflächen (IFG), Karlsruher Institut für Technologie (KIT), Hermann-von-Helmholtz-Platz 1, 76344Eggenstein-Leopoldshafen, Deutschland
| | - Ammar Mahmood
- Institut
für Massivbau und Baustofftechnologie (IMB), Karlsruher Institut für Technologie (KIT), Gotthard-Franz-Str. 3, 76131Karlsruhe, Deutschland
| | - Peter Krolla
- Institut
für Funktionelle Grenzflächen (IFG), Karlsruher Institut für Technologie (KIT), Hermann-von-Helmholtz-Platz 1, 76344Eggenstein-Leopoldshafen, Deutschland
| | - Peter Thissen
- Institut
für Funktionelle Grenzflächen (IFG), Karlsruher Institut für Technologie (KIT), Hermann-von-Helmholtz-Platz 1, 76344Eggenstein-Leopoldshafen, Deutschland
- Institut
für Massivbau und Baustofftechnologie (IMB), Karlsruher Institut für Technologie (KIT), Gotthard-Franz-Str. 3, 76131Karlsruhe, Deutschland
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6
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Smith S, ElKashty O, Tamimi F, Tran SD, Cerruti M. Titanium-Containing Silicate-Based Sol-Gel Bioactive Glass: Development, Characterization, and Applications. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:14243-14253. [PMID: 34860533 DOI: 10.1021/acs.langmuir.1c01593] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Bioactive glasses are surface-reactive glasses that, when placed in physiological fluid, undergo a transformation from glass to hydroxyapatite. Doping the bioactive glass with metallic ions can impart desirable and unique properties that are not inherent to natural hydroxyapatite. Once such ion is titanium. Titanium exists in trace amounts in native dental enamel, and its presence has been correlated with increased tooth hardness and brightness, both desirable clinical properties. Synthetic titanium-substituted hydroxyapatite exhibits better mechanical and antibacterial properties and demonstrates potential for an improved cellular response when compared to unmodified hydroxyapatite with applications in the broader field of bone tissue engineering. In this work, we use the sol-gel method to synthesize a titanium-containing silicate-based bioactive glass aimed at generating titanium-substituted hydroxyapatite on the glass surface upon immersion in body fluid. Titanium is homogeneously distributed throughout our glass, which keeps its amorphous nature. After 14 days of immersion in simulated body fluid, the glass forms a titanium-substituted hydroxyapatite on its surface. Enamel surfaces treated with the titanium-containing glass show significantly increased microhardness compared to enamel surfaces treated with a control glass, confirming the potential for the proposed glass in enamel remineralization. We also show that the presence of titanium in the glass promotes cell differentiation toward bone formation, suggesting further applications for this material in the broader field of bone tissue engineering.
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Affiliation(s)
- Sophia Smith
- Department of Mining and Materials Engineering, McGill University, Montreal, Quebec H3A 2T5, Canada
| | - Osama ElKashty
- Faculty of Dentistry, McGill University, Montreal, Quebec H3A 2T5, Canada
- Oral Pathology Department, Faculty of Dentistry, Mansoura University, Mansoura 35516, Egypt
| | - Faleh Tamimi
- Faculty of Dentistry, McGill University, Montreal, Quebec H3A 2T5, Canada
| | - Simon D Tran
- Faculty of Dentistry, McGill University, Montreal, Quebec H3A 2T5, Canada
| | - Marta Cerruti
- Department of Mining and Materials Engineering, McGill University, Montreal, Quebec H3A 2T5, Canada
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7
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Balasubramaniam B, Prateek, Ranjan S, Saraf M, Kar P, Singh SP, Thakur VK, Singh A, Gupta RK. Antibacterial and Antiviral Functional Materials: Chemistry and Biological Activity toward Tackling COVID-19-like Pandemics. ACS Pharmacol Transl Sci 2021; 4:8-54. [PMID: 33615160 PMCID: PMC7784665 DOI: 10.1021/acsptsci.0c00174] [Citation(s) in RCA: 99] [Impact Index Per Article: 33.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Indexed: 12/12/2022]
Abstract
The ongoing worldwide pandemic due to COVID-19 has created awareness toward ensuring best practices to avoid the spread of microorganisms. In this regard, the research on creating a surface which destroys or inhibits the adherence of microbial/viral entities has gained renewed interest. Although many research reports are available on the antibacterial materials or coatings, there is a relatively small amount of data available on the use of antiviral materials. However, with more research geared toward this area, new information is being added to the literature every day. The combination of antibacterial and antiviral chemical entities represents a potentially path-breaking intervention to mitigate the spread of disease-causing agents. In this review, we have surveyed antibacterial and antiviral materials of various classes such as small-molecule organics, synthetic and biodegradable polymers, silver, TiO2, and copper-derived chemicals. The surface protection mechanisms of the materials against the pathogen colonies are discussed in detail, which highlights the key differences that could determine the parameters that would govern the future development of advanced antibacterial and antiviral materials and surfaces.
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Affiliation(s)
| | - Prateek
- Department
of Chemical Engineering, Indian Institute
of Technology Kanpur, Kanpur, Uttar Pradesh 208016, India
| | - Sudhir Ranjan
- Department
of Chemical Engineering, Indian Institute
of Technology Kanpur, Kanpur, Uttar Pradesh 208016, India
| | - Mohit Saraf
- Department
of Chemical Engineering, Indian Institute
of Technology Kanpur, Kanpur, Uttar Pradesh 208016, India
| | - Prasenjit Kar
- Department
of Chemical Engineering, Indian Institute
of Technology Kanpur, Kanpur, Uttar Pradesh 208016, India
| | - Surya Pratap Singh
- Department
of Chemistry, Indian Institute of Technology
Kanpur, Kanpur, Uttar Pradesh 208016, India
| | - Vijay Kumar Thakur
- Biorefining
and Advanced Materials Research Center, Scotland’s Rural College (SRUC), Kings Buildings, West Mains Road, Edinburgh EH9 3JG, United Kingdom
| | - Anand Singh
- Department
of Chemistry, Indian Institute of Technology
Kanpur, Kanpur, Uttar Pradesh 208016, India
| | - Raju Kumar Gupta
- Department
of Chemical Engineering, Indian Institute
of Technology Kanpur, Kanpur, Uttar Pradesh 208016, India
- Center
for Environmental Science and Engineering, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh 208016, India
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8
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The Impact of Composites with Silicate-Based Glasses and Gold Nanoparticles on Skin Wound Regeneration. Molecules 2021; 26:molecules26030620. [PMID: 33504095 PMCID: PMC7866013 DOI: 10.3390/molecules26030620] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 01/19/2021] [Accepted: 01/19/2021] [Indexed: 01/20/2023] Open
Abstract
The silver content of the skin regeneration ointments can influence its regeneration process but in the meantime, it can take the benefit of the antibacterial properties of silver by avoiding the bacterial infection of an open wound. In the current study, the skin healing and regeneration capacity of bioactive glass with spherical gold nanocages (BGAuIND) in the Vaseline ointments were evaluated in vivo comparing the bioactive glass (BG)-Vaseline and bioactive glass with spherical gold (BGAuSP)-Vaseline ointments. Spherical gold nanocages are stabilized with silver and as a consequence the BGAuIND exhibits great antibacterial activity. Histological examination of the cutaneous tissue performed on day 8 indicates a more advanced regeneration process in rats treated with BGAuSP-Vaseline. The histopathological examination also confirms the results obtained after 11 days post-intervention, when the skin is completely regenerated at rats treated with BGAuSP-Vaseline compared with the others groups where the healing was incomplete. This result is also confirmed by the macroscopic images of the evolution of wounds healing. As expected, the silver content influences the wound healing process but after two weeks, for all of the post-interventional trials from the groups of rats, the skin healing was completely.
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9
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Copper containing silicocarnotite bioceramic with improved mechanical strength and antibacterial activity. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 118:111493. [PMID: 33255060 DOI: 10.1016/j.msec.2020.111493] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 08/31/2020] [Accepted: 09/06/2020] [Indexed: 12/17/2022]
Abstract
Copper is well known for its multifunctional biological effects including antibacterial and angiogenic activities, while silicon-containing bioceramic has proved to possess superior biological properties to hydroxyapatite (HA). In this work, CuO was introduced to silicocarnotite (Ca5(PO4)2SiO4, CPS) to simultaneously enhance its mechanical and antibacterial properties, and its cytocompatibility was also evaluated. Results showed that CuO could significantly facilitate the densification process of CPS bioceramic through liquid-phase sintering. The bending strength of CPS with the addition of 3.0 wt% CuO improved from 29.2 MPa to 63.4 MPa after sintered at 1200 °C. Moreover, Cu-CPS bioceramics demonstrated superior in vitro antibacterial property against both S. aureus and E. coli strains by destroying their membrane integrity, and the antibacterial activity augmented with CuO content. Meanwhile, the released Cu ions from Cu-CPS bioceramics could promote the proliferation of human umbilical vein endothelial cells (HUVECs), and the in vitro cytocompatibility exhibited concentration dependence on Cu ions. These suggest that Cu-CPS bioceramics might be promising candidates for bone tissue regeneration with an ability to prevent postoperative infections.
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10
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Jacobs A, Renaudin G, Forestier C, Nedelec JM, Descamps S. Biological properties of copper-doped biomaterials for orthopedic applications: A review of antibacterial, angiogenic and osteogenic aspects. Acta Biomater 2020; 117:21-39. [PMID: 33007487 DOI: 10.1016/j.actbio.2020.09.044] [Citation(s) in RCA: 80] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 09/17/2020] [Accepted: 09/21/2020] [Indexed: 12/13/2022]
Abstract
Copper is an essential trace element required for human life, and is involved in several physiological mechanisms. Today researchers have found and confirmed that Cu has biological properties which are particularly useful for orthopedic biomaterials applications such as implant coatings or biodegradable filler bone substitutes. Indeed, Cu exhibits antibacterial functions, provides angiogenic ability and favors osteogenesis; these represent major key points for ideal biomaterial integration and the healing process that follows. The antibacterial performances of copper-doped biomaterials present an interesting alternative to the massive use of prophylactic antibiotics and help to limit the development of antibiotic resistance. By stimulating blood vessel growth and new bone formation, copper contributes to the improved bio-integration of biomaterials. This review describes the bio-functional advantages offered by Cu and focuses on the antibacterial, angiogenic and osteogenic properties of Cu-doped biomaterials with potential for orthopedic applications.
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11
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Ștefănescu BE, Călinoiu LF, Ranga F, Fetea F, Mocan A, Vodnar DC, Crișan G. The Chemical and Biological Profiles of Leaves from Commercial Blueberry Varieties. PLANTS (BASEL, SWITZERLAND) 2020; 9:E1193. [PMID: 32932659 PMCID: PMC7569947 DOI: 10.3390/plants9091193] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Revised: 09/04/2020] [Accepted: 09/08/2020] [Indexed: 12/26/2022]
Abstract
Blueberries have seen an ascending production line boosted by World Health Organization (WHO) approvals for their contributions to a healthy diet and the evidence that they act against different diseases. This increase resulted in significant amounts of discarded leaves, which could be a valuable source of bioactive compounds. In the present study, ultrasound-assisted extraction technology was used to determine and compare the chemical and biological profiles of leaves from six commercial blueberry (Vaccinium corymbosum L.) varieties. Feruloylquinic acid was the major compound identified, ranging from 19.23 ± 0.18 mg/g (at the lowest level, registered in the Spartan variety) to 49.62 ± 0.41 mg/g (at the highest level, registered in the Nelson variety). Rutin was the second major compound identified, for which Toro, Nelson, and Elliot leaves registered the highest values, with 35.77 ± 0.19 mg/g, 32.50 ± 0.20 mg/g, and 31.53 ± 0.1 mg/g, respectively. Even though analogous polyphenols were detected in the six cultivars, their concentrations and amounts were different. The leaf extracts of the cultivars Toro, Elliot, and Nelson appear to be good sources of antioxidants, registering high percentage inhibitions of DPPH radicals, of 70.41%, 68.42%, and 58.69%, respectively. The blueberry leaf extracts had a strong antibacterial activity and a low antifungal capacity, and a low-to-moderate antimutagenic capacity towards Salmonella typhimurium TA98 and TA100 strains, with Toro leaf being the best candidate. All of these biological activities indicate health-related benefits, recommending them as suitable candidates for medical and pharmaceutical applications. The present paper adds significant knowledge to the field of blueberry leaves via chemical and biological profiles, supporting the ultrasound-assisted extraction technique as a useful and green method to provide alternative sources of bioactive compounds.
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Affiliation(s)
- Bianca-Eugenia Ștefănescu
- Department of Pharmaceutical Botany, “Iuliu Hațieganu” University of Medicine and Pharmacy, Ghe. Marinescu Street 23, 400337 Cluj-Napoca, Romania; (B.-E.Ș.); (A.M.); (G.C.)
- Institute of Life Sciences, University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, Calea Mănăștur 3–5, 400372 Cluj-Napoca, Romania
| | - Lavinia Florina Călinoiu
- Institute of Life Sciences, University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, Calea Mănăștur 3–5, 400372 Cluj-Napoca, Romania
| | - Floricuța Ranga
- Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, Calea Mănăștur 3–5, 400372 Cluj-Napoca, Romania; (F.R.); (F.F.)
| | - Florinela Fetea
- Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, Calea Mănăștur 3–5, 400372 Cluj-Napoca, Romania; (F.R.); (F.F.)
| | - Andrei Mocan
- Department of Pharmaceutical Botany, “Iuliu Hațieganu” University of Medicine and Pharmacy, Ghe. Marinescu Street 23, 400337 Cluj-Napoca, Romania; (B.-E.Ș.); (A.M.); (G.C.)
- Laboratory of Chromatography, Institute of Advanced Horticulture Research of Transylvania, University of Agricultural Sciences and Veterinary Medicine, 400372 Cluj-Napoca, Romania
| | - Dan Cristian Vodnar
- Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, Calea Mănăștur 3–5, 400372 Cluj-Napoca, Romania; (F.R.); (F.F.)
| | - Gianina Crișan
- Department of Pharmaceutical Botany, “Iuliu Hațieganu” University of Medicine and Pharmacy, Ghe. Marinescu Street 23, 400337 Cluj-Napoca, Romania; (B.-E.Ș.); (A.M.); (G.C.)
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12
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Mitra D, Kang ET, Neoh KG. Antimicrobial Copper-Based Materials and Coatings: Potential Multifaceted Biomedical Applications. ACS APPLIED MATERIALS & INTERFACES 2020; 12:21159-21182. [PMID: 31880421 DOI: 10.1021/acsami.9b17815] [Citation(s) in RCA: 100] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Surface contamination by microbes leads to several detrimental consequences like hospital- and device-associated infections. One measure to inhibit surface contamination is to confer the surfaces with antimicrobial properties. Copper's antimicrobial properties have been known since ancient times, and the recent resurgence in exploiting copper for application as antimicrobial materials or coatings is motivated by the growing concern about antibiotic resistance and the pressure to reduce antibiotic use. Copper, unlike silver, demonstrates rapid and high microbicidal efficacy against pathogens that are in close contact under ambient indoor conditions, which enhances its range of applicability. This review highlights the mechanisms behind copper's potent antimicrobial property, the design and fabrication of different copper-based antimicrobial materials and coatings comprising metallic copper/copper alloys, copper nanoparticles or ions, and their potential for practical applications. Finally, as the antimicrobial coatings market is expected to grow, we offer our perspectives on the implications of increased copper release into the environment and the potential ecotoxicity effects and possibility of development of resistant genes in pathogens.
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Affiliation(s)
- Debirupa Mitra
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Kent Ridge, Singapore 117576
| | - En-Tang Kang
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Kent Ridge, Singapore 117576
| | - Koon Gee Neoh
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Kent Ridge, Singapore 117576
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13
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Aguilar-Perez D, Vargas-Coronado R, Cervantes-Uc JM, Rodriguez-Fuentes N, Aparicio C, Covarrubias C, Alvarez-Perez M, Garcia-Perez V, Martinez-Hernandez M, Cauich-Rodriguez JV. Antibacterial activity of a glass ionomer cement doped with copper nanoparticles. Dent Mater J 2020; 39:389-396. [PMID: 32213765 DOI: 10.4012/dmj.2019-046] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Copper nanoparticles (NCu) were synthetized and added to commercial glass ionomer cement, to evaluate in vitro its antibacterial activity against oral cavity strains. The NCu were synthesized by copper acetate reduction with L-ascorbic acid and characterized by FTIR, Raman, XPS, XRD and TEM. Then, commercial glass ionomer cement (GIC) was modified (MGIC) with various concentrations of NCu and physicochemically characterized. Cell viability was tested against human dental pulp fibroblasts (HDPFs) by Alamar-Blue assay and antibacterial test was performed against S. mutans and S. sanguinis by colony forming unit (CFU) growth method. Synthesized NCu rendered a mixture of both metallic copper and cuprous oxide (Cu2O). HDPF viability reduces with exposure time to the extracts (68-72% viability) and MGIC with 2-4 wt% NCu showed antimicrobial activity against the two tested strains.
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Affiliation(s)
| | | | | | | | - Conrado Aparicio
- Minnesota Dental Research Center for Biomaterials and Biomechanics, University of Minnesota School of Dentistry
| | - Cristian Covarrubias
- Laboratory of Nanobiomaterials, Institute for Research in Dental Sciences, Faculty of Dentistry, University of Chile
| | - Marco Alvarez-Perez
- Tissue Bioengineering Laboratory, Division of Graduate Studies and Research of the Faculty of Dentistry
| | - Victor Garcia-Perez
- Laboratory of Molecular Genetics, Division of Graduate Studies and Research of the Faculty of Dentistry
| | - Miryam Martinez-Hernandez
- Laboratory of Molecular Genetics, Division of Graduate Studies and Research of the Faculty of Dentistry
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14
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Mitrea L, Călinoiu LF, Martău GA, Szabo K, Teleky BE, Mureșan V, Rusu AV, Socol CT, Vodnar DC. Poly(vinyl alcohol)-Based Biofilms Plasticized with Polyols and Colored with Pigments Extracted from Tomato By-Products. Polymers (Basel) 2020; 12:E532. [PMID: 32131384 PMCID: PMC7182853 DOI: 10.3390/polym12030532] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Revised: 02/20/2020] [Accepted: 02/27/2020] [Indexed: 01/19/2023] Open
Abstract
In the current work the physicochemical features of poly(vinyl alcohol) (PVOH) biofilms, enriched with eco-friendly polyols and with carotenoid-rich extracts, were investigated. The polyols, such as glycerol (Gly), 1,3-propanediol (PDO), and 2,3-butanediol (BDO) were used as plasticizers and the tomato-based pigments (TP) as coloring agents. The outcomes showed that β-carotene was the major carotenoid in the TP (1.605 mg β-carotene/100 DW), which imprinted the orange color to the biofilms. The flow behavior indicated that with the increase of shear rate the viscosity of biofilm solutions also increased until 50 s-1, reaching values at 37 °C of approximately 9 ± 0.5 mPa·s for PVOH, and for PVOH+TP, 14 ± 0.5 mPa·s in combination with Gly, PDO, and BDO. The weight, thickness, and density of samples increased with the addition of polyols and TP. Biofilms with TP had lower transparency values compared with control biofilms (without vegetal pigments). The presence of BDO, especially, but also of PDO and glycerol in biofilms created strong bonds within the PVOH matrix by increasing their mechanical resistance. The novelty of the present approach relies on the replacement of synthetic colorants with natural pigments derived from agro-industrial by-products, and the use of a combination of biodegradable polymers and polyols, as an integrated solution for packaging application in the bioplastic industry.
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Affiliation(s)
- Laura Mitrea
- Institute of Life Sciences, University of Agricultural Sciences and Veterinary Medicine, Calea Mănăştur 3-5, 400372 Cluj-Napoca, Romania; (L.M.); (L.-F.C.); (G.-A.M.); (K.S.); (B.-E.T.)
- Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine, Calea Mănăştur 3-5, 400372 Clu-Napoca, Romania;
| | - Lavinia-Florina Călinoiu
- Institute of Life Sciences, University of Agricultural Sciences and Veterinary Medicine, Calea Mănăştur 3-5, 400372 Cluj-Napoca, Romania; (L.M.); (L.-F.C.); (G.-A.M.); (K.S.); (B.-E.T.)
- Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine, Calea Mănăştur 3-5, 400372 Clu-Napoca, Romania;
| | - Gheorghe-Adrian Martău
- Institute of Life Sciences, University of Agricultural Sciences and Veterinary Medicine, Calea Mănăştur 3-5, 400372 Cluj-Napoca, Romania; (L.M.); (L.-F.C.); (G.-A.M.); (K.S.); (B.-E.T.)
- Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine, Calea Mănăştur 3-5, 400372 Clu-Napoca, Romania;
| | - Katalin Szabo
- Institute of Life Sciences, University of Agricultural Sciences and Veterinary Medicine, Calea Mănăştur 3-5, 400372 Cluj-Napoca, Romania; (L.M.); (L.-F.C.); (G.-A.M.); (K.S.); (B.-E.T.)
| | - Bernadette-Emoke Teleky
- Institute of Life Sciences, University of Agricultural Sciences and Veterinary Medicine, Calea Mănăştur 3-5, 400372 Cluj-Napoca, Romania; (L.M.); (L.-F.C.); (G.-A.M.); (K.S.); (B.-E.T.)
| | - Vlad Mureșan
- Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine, Calea Mănăştur 3-5, 400372 Clu-Napoca, Romania;
| | - Alexandru-Vasile Rusu
- CENCIRA Agrofood Research and Innovation Centre, Ion Meșter 6, 400650 Cluj-Napoca, Romania; (A.-V.R.); (C.-T.S.)
| | - Claudia-Terezia Socol
- CENCIRA Agrofood Research and Innovation Centre, Ion Meșter 6, 400650 Cluj-Napoca, Romania; (A.-V.R.); (C.-T.S.)
| | - Dan-Cristian Vodnar
- Institute of Life Sciences, University of Agricultural Sciences and Veterinary Medicine, Calea Mănăştur 3-5, 400372 Cluj-Napoca, Romania; (L.M.); (L.-F.C.); (G.-A.M.); (K.S.); (B.-E.T.)
- Faculty of Food Science and Technology, University of Agricultural Sciences and Veterinary Medicine, Calea Mănăştur 3-5, 400372 Clu-Napoca, Romania;
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15
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Thin Degradable Coatings for Optimization of Osteointegration Associated with Simultaneous Infection Prophylaxis. MATERIALS 2019; 12:ma12213495. [PMID: 31731410 PMCID: PMC6862457 DOI: 10.3390/ma12213495] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Revised: 10/21/2019] [Accepted: 10/21/2019] [Indexed: 12/27/2022]
Abstract
One of the most common causes of implant failure is aseptic prosthesis loosening. Another frequent complication after prosthesis implant is the microbial colonization of the prosthesis surface, which often leads to a replacement of the prosthesis. One approach to reduce these complications is the application of bioactive substances to implant surfaces. Both an antibiotic prophylaxis and a faster osteointegration can be obtained by incorporation of bactericidal active metals in degradable calcium phosphate (CaP) coatings. In this study, thin degradable calcium phosphate ceramic coatings doped with silver (Ag), copper (Cu), and bismuth (Bi) on a titanium substrate were prepared with the aid of the high-velocity suspension flame spraying (HVSFS) coating process. To characterize the samples surface roughness, brightfield microscopy of the coatings, X-ray diffraction (XRD)-analysis for definition of the phase composition of the layers, Raman spectroscopy for determination of the phase composition of the contained metals, element-mapping for Cu-content verification, release kinetics for detection of metal ions and ceramic components of the coatings were carried out. The aim of this study was to evaluate in vitro biocompatibility and antimicrobial activity of the coatings. For biocompatibility testing, growth experiments were performed using the cell culture line MG-63. Cell viability was investigated by Giemsa staining and live/dead assay. The WST-1 kit was used to quantify cell proliferation and vitality in vitro and the lactate dehydrogenase (LDH) kit to quantify cytotoxicity. The formation of hydroxyapatite crystals in simulated body fluid was investigated to predict bioactivity in vivo. The Safe Airborne Antibacterial Assay with Staphylococcus aureus (S. aureus) was used for antimicrobial testing. The results showed good biocompatibility of all the metal doped CaP coatings, furthermore Cu and Ag doped layers showed significant antibacterial effects against S. aureus.
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16
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Popescu RA, Tăbăran FA, Bogdan S, Fărcăṣanu A, Purdoiu R, Magyari K, Vulpoi A, Dreancă A, Sevastre B, Simon S, Papuc I, Baia L. Bone regeneration response in an experimental long bone defect orthotopically implanted with alginate-pullulan-glass-ceramic composite scaffolds. J Biomed Mater Res B Appl Biomater 2019; 108:1129-1140. [PMID: 31397056 DOI: 10.1002/jbm.b.34464] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Revised: 07/04/2019] [Accepted: 07/24/2019] [Indexed: 12/22/2022]
Abstract
In the present study, scaffolds based on alginate-pullulan-bioactive glass-ceramic with 0.5 and 1.5 mol % copper oxide were orthotopically implanted in experimental rat models to assess their ability to heal an induced bone defect. By implying magnetic resonance and imaging scans together with histological evaluation of the processed samples, a progressive healing of bone was observed within 5 weeks. Furthermore, as the regenerative process continued, new bone tissue was formed, enhancing the growth of irregular bone spicules around the scaffolds. A significantly higher amount of new bone was formed (37%) in the defect that received the composite with 1.5 mol % CuO (in glass-ceramic matrix) content implant. Nevertheless, the bone regeneration obtained by scaffold with 0.5 mol % CuO implanted is comparable with the alginate-pullulan-β-tricalcium phosphate/hydroxiapatite composite implant. The assessed amount of new bone formed was found to be between 29.75 and 37.15% for all the composition involved in the present study. During this process a regeneration process was shown when the alginate-pullulan composite materials were involved, fact that indicate the great potential of these materials to be used in tissue engineering.
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Affiliation(s)
- Radu A Popescu
- Faculty of Veterinary Medicine, University of Agricultural Science and Veterinary Medicine, Cluj-Napoca, Romania.,Nanostructured Materials and Bio-Nano-Interfaces Center, Interdisciplinary Research Institute on Bio-Nano-Sciences, Babeṣ-Bolyai University, Cluj-Napoca, Romania.,Faculty of Physics, Babeṣ-Bolyai University, Cluj-Napoca, Romania
| | - Flaviu A Tăbăran
- Faculty of Veterinary Medicine, University of Agricultural Science and Veterinary Medicine, Cluj-Napoca, Romania
| | - Sidonia Bogdan
- Faculty of Veterinary Medicine, University of Agricultural Science and Veterinary Medicine, Cluj-Napoca, Romania
| | - Alexandru Fărcăṣanu
- Faculty of Physics, Babeṣ-Bolyai University, Cluj-Napoca, Romania.,National Centre of Magnetic Resonance, Babeṣ-Bolyai University, Cluj-Napoca, Romania
| | - Robert Purdoiu
- Faculty of Veterinary Medicine, University of Agricultural Science and Veterinary Medicine, Cluj-Napoca, Romania
| | - Klara Magyari
- Nanostructured Materials and Bio-Nano-Interfaces Center, Interdisciplinary Research Institute on Bio-Nano-Sciences, Babeṣ-Bolyai University, Cluj-Napoca, Romania
| | - Adriana Vulpoi
- Nanostructured Materials and Bio-Nano-Interfaces Center, Interdisciplinary Research Institute on Bio-Nano-Sciences, Babeṣ-Bolyai University, Cluj-Napoca, Romania
| | - Alexandra Dreancă
- Faculty of Veterinary Medicine, University of Agricultural Science and Veterinary Medicine, Cluj-Napoca, Romania.,Nanostructured Materials and Bio-Nano-Interfaces Center, Interdisciplinary Research Institute on Bio-Nano-Sciences, Babeṣ-Bolyai University, Cluj-Napoca, Romania
| | - Bogdan Sevastre
- Faculty of Veterinary Medicine, University of Agricultural Science and Veterinary Medicine, Cluj-Napoca, Romania
| | - Simion Simon
- Nanostructured Materials and Bio-Nano-Interfaces Center, Interdisciplinary Research Institute on Bio-Nano-Sciences, Babeṣ-Bolyai University, Cluj-Napoca, Romania.,National Centre of Magnetic Resonance, Babeṣ-Bolyai University, Cluj-Napoca, Romania
| | - Ionel Papuc
- Faculty of Veterinary Medicine, University of Agricultural Science and Veterinary Medicine, Cluj-Napoca, Romania
| | - Lucian Baia
- Nanostructured Materials and Bio-Nano-Interfaces Center, Interdisciplinary Research Institute on Bio-Nano-Sciences, Babeṣ-Bolyai University, Cluj-Napoca, Romania.,Faculty of Physics, Babeṣ-Bolyai University, Cluj-Napoca, Romania
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17
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Jiang G, Xu B, Zhu J, Zhang Y, Liu T, Song G. Polymer microneedles integrated with glucose-responsive mesoporous bioactive glass nanoparticles for transdermal delivery of insulin. Biomed Phys Eng Express 2019. [DOI: 10.1088/2057-1976/ab3202] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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18
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Mozafari M, Banijamali S, Baino F, Kargozar S, Hill RG. Calcium carbonate: Adored and ignored in bioactivity assessment. Acta Biomater 2019; 91:35-47. [PMID: 31004843 DOI: 10.1016/j.actbio.2019.04.039] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Revised: 04/10/2019] [Accepted: 04/12/2019] [Indexed: 11/26/2022]
Abstract
The title of this article could sound a bit curious to some readers since a layer of apatite - and not calcium carbonate - is well-known to form on the surface of bioactive glasses upon immersion in simulated body fluids. However, calcium carbonate (commonly reported as calcite crystals) can form on the surface of bioactive glasses as well, instead of or in competition with hydroxyapatite, during in vitro tests. Major factors that govern calcium carbonate formation are a high concentration of Ca2+ ions in the testing solution - and, in this regard, glass composition/texture and type of medium play key roles - along with the volume of solution used during in vitro tests. To date, this phenomenon has received relatively little attention and is still partly unexplored. This article provides a critical overview of the available literature on this topic in order to stimulate constructive discussion among biomaterials scientists and further research for better understanding the mechanisms involved in glass bioactivity. STATEMENT OF SIGNIFICANCE: A literature search indicates that a layer of apatite - and not calcium carbonate - is well known to form on the surface of biomaterials during the bioactivity assessment. However, calcium carbonate can form on the surface as well, instead of or in competition with apatite. To date, this phenomenon has received relatively little attention and is still partly unexplored. This review provides a critical overview of the available literature on this topic in order to stimulate constructive discussions that can be further useful for clinical success.
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19
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Rahmati M, Mozafari M. Selective Contribution of Bioactive Glasses to Molecular and Cellular Pathways. ACS Biomater Sci Eng 2019; 6:4-20. [PMID: 33463236 DOI: 10.1021/acsbiomaterials.8b01078] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Over the past few decades, biomedical scientists and surgeons have given substantial attention to bioactive glasses as promising, long-lasting biomaterials that can make chemical connections with the neighboring hard and soft tissues. Several studies have examined the cellular and molecular responses to bioactive glasses to determine if they are suitable biomaterials for tissue engineering and regenerative medicine. In this regard, different ions and additives have been used recently to induce specific characteristics for selective cellular and molecular responses. This Review briefly describes foreign-body response mechanisms and the role of adsorbed proteins as the key players in starting interactions between cells and biomaterials. It then explains the physicochemical properties of the most common bioactive glasses, which have a significant impact on their cellular and molecular responses. It is expected that, with the development of novel strategies, the physiochemical properties of bioactive glasses can be engineered to precisely control proteins' adsorption and cellular functions after implantation.
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Affiliation(s)
- Maryam Rahmati
- Department of Biomaterials, Institute of Clinical Dentistry, University of Oslo, 0317 Oslo, Norway
| | - Masoud Mozafari
- Bioengineering Research Group, Nanotechnology and Advanced Materials Department, Materials and Energy Research Center (MERC), Tehran 14155-4777, Iran.,Cellular and Molecular Research Center, Iran University of Medical Sciences, Tehran 144961-4535, Iran.,Department of Tissue Engineering & Regenerative Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, 144961-4535 Tehran, Iran
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20
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Popescu RA, Magyari K, Taulescu M, Vulpoi A, Berce C, Bogdan S, Lelescu C, Dreancă A, Tudoran O, Papuc I, Baia L. New alginate-pullulan-bioactive glass composites with copper oxide for bone tissue regeneration trials. J Tissue Eng Regen Med 2018; 12:2112-2121. [DOI: 10.1002/term.2746] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Revised: 05/25/2018] [Accepted: 07/09/2018] [Indexed: 12/21/2022]
Affiliation(s)
- Radu A. Popescu
- Faculty of Physics; Babes-Bolyai University; Cluj-Napoca Romania
- Nanostructured Materials and Bio-Nano-Interfaces Center, Interdisciplinary Research Institute on Bio-Nano-Sciences; Babes-Bolyai University; Cluj-Napoca Romania
- Faculty of Veterinary Medicine; University of Agricultural Science and Veterinary Medicine; Cluj-Napoca Romania
| | - Klara Magyari
- Faculty of Physics; Babes-Bolyai University; Cluj-Napoca Romania
- Nanostructured Materials and Bio-Nano-Interfaces Center, Interdisciplinary Research Institute on Bio-Nano-Sciences; Babes-Bolyai University; Cluj-Napoca Romania
| | - Marian Taulescu
- Faculty of Veterinary Medicine; University of Agricultural Science and Veterinary Medicine; Cluj-Napoca Romania
| | - Adriana Vulpoi
- Faculty of Physics; Babes-Bolyai University; Cluj-Napoca Romania
- Nanostructured Materials and Bio-Nano-Interfaces Center, Interdisciplinary Research Institute on Bio-Nano-Sciences; Babes-Bolyai University; Cluj-Napoca Romania
| | - Cristian Berce
- Centre for Experimental Medicine; Iuliu Haţieganu University of Medicine and Pharmacy; Cluj-Napoca Romania
| | - Sidonia Bogdan
- Faculty of Veterinary Medicine; University of Agricultural Science and Veterinary Medicine; Cluj-Napoca Romania
| | - Cristina Lelescu
- Faculty of Veterinary Medicine; University of Agricultural Science and Veterinary Medicine; Cluj-Napoca Romania
| | - Alexandra Dreancă
- Faculty of Veterinary Medicine; University of Agricultural Science and Veterinary Medicine; Cluj-Napoca Romania
| | - Oana Tudoran
- Department of Functional Genomics and Experimental Pathology; The Oncology Institute I. Chiricuta; Cluj-Napoca Romania
| | - Ionel Papuc
- Faculty of Veterinary Medicine; University of Agricultural Science and Veterinary Medicine; Cluj-Napoca Romania
| | - Lucian Baia
- Faculty of Physics; Babes-Bolyai University; Cluj-Napoca Romania
- Nanostructured Materials and Bio-Nano-Interfaces Center, Interdisciplinary Research Institute on Bio-Nano-Sciences; Babes-Bolyai University; Cluj-Napoca Romania
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21
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3D-printed scaffolds with bioactive elements-induced photothermal effect for bone tumor therapy. Acta Biomater 2018; 73:531-546. [PMID: 29656075 DOI: 10.1016/j.actbio.2018.04.014] [Citation(s) in RCA: 74] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Revised: 04/04/2018] [Accepted: 04/05/2018] [Indexed: 12/11/2022]
Abstract
For treatment of bone tumor and regeneration of bone defects, the biomaterials should possess the ability to kill tumor cells and regenerate bone defect simultaneously. To date, there are a few biomaterials possessing such dual functions, the disadvantages, however, such as long-term toxicity and degradation, restrict their application. Although bioactive elements have been incorporated into biomaterials to improve their osteogenic activity, there is no report about elements-induced functional scaffolds for photothermal tumor therapy. Herein, the elements (Cu, Fe, Mn, Co)-doped bioactive glass-ceramic (BGC) scaffolds with photothermal effect and osteogenic differentiation ability were prepared via 3D-printing method. Moreover, the photothermal anti-tumor effect and osteogenic activity of these scaffolds were systematically investigated. The prepared elements-doped scaffolds possessed excellent photothermal performance, which displayed a trend, 5Cu-BGC > 5Fe-BGC > 5Mn-BGC > 5Co-BGC, in this study. The final temperature of elements-doped scaffolds can be well controlled by altering the doping element categories, contents and laser power density. Additionally, the hyperthermia induced by 5Cu-BGC, 5Fe-BGC and 5Mn-BGC effectively killed tumor cells in vitro and inhibited tumor growth in vivo. More importantly, 5Fe-BGC and 5Mn-BGC scaffolds could promote rabbit bone mesenchymal stem cells (rBMSCs) adhesion, and the ionic products released from elements-doped scaffolds significantly stimulated the osteogenic differentiation of bone-forming cells. These results suggested that 5Fe-BGC and 5Mn-BGC scaffolds possessed promising potential for photothermal treatment of bone tumor and at the same time for stimulating bone regeneration, representing a smart strategy for the treatment of bone tumors by combining dual functional bioactive ions with tissue engineering scaffolds. STATEMENT OF SIGNIFICANCE The major innovation of this study is that we fabricated the elements (Cu, Fe, Mn, Co)-doped bioactive scaffolds via 3D printing technique and found that they possess distinct photothermal performance and osteogenic differentiation ability. To the best of our knowledge, there is no report about elements-doped scaffolds for photothermal therapy of bone tumor. This is an important research advance by combining the photothermal effect and osteogenic differentiation activity of bioactive elements in the scaffold system for potential bone tumor therapy and bone reconstruction. We optimized the elements-doped scaffolds and found the photothermal effect of elements-doped scaffolds (5Cu-BGC, 5Fe-BGC, 5Mn-BGC) could effectively kill tumor cells in vivo. The photothermal performance of elements-doped scaffolds follows a trend: 5Cu-BGC > 5Fe-BGC > 5Mn-BGC > 5Co-BGC > BGC. Compared to traditional nano-sized photothermal agents, bioactive elements-induced functional scaffolds have better biosecurity and bioactivity. Furthermore, 5Fe-BGC and 5Mn-BGC scaffolds displayed excellent bone-forming activity by stimulating the osteogenic differentiation of bone-forming cells. The major significance of the study is that the elements-doped bioactive glass-ceramics (5Fe-BGC, 5Mn-BGC) have great potential to be used as bifunctional scaffolds for photothermal tumor therapy and bone regeneration, representing a smart strategy for the treatment of bone tumors by combining dual functional bioactive ions with tissue engineering scaffolds.
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22
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Gomes S, Vichery C, Descamps S, Martinez H, Kaur A, Jacobs A, Nedelec JM, Renaudin G. Cu-doping of calcium phosphate bioceramics: From mechanism to the control of cytotoxicity. Acta Biomater 2018; 65:462-474. [PMID: 29066420 DOI: 10.1016/j.actbio.2017.10.028] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2017] [Revised: 10/09/2017] [Accepted: 10/17/2017] [Indexed: 02/08/2023]
Abstract
In this study, the Cu-doping mechanism of Biphasic Calcium Phosphate (BCP) was thoroughly investigated, as was its ionic release behavior, in order to elucidate cytotoxicity features of these bioceramics. BCP are composed of hydroxyapatite (Ca10(PO4)6(OH)2) and β-TCP (Ca3(PO4)2). The two phases present two different doping mechanisms. Incorporation into the β-TCP structure is achieved at around 700 °C thanks to a substitution mechanism leading to the Cu-doped Ca3-xCux(PO4)2 compound. Incorporation into the HAp structure is achieved thanks to an interstitial mechanism that is limited to a Cu-poor HAp phase for temperatures below 1100 °C (Ca10Cux(PO4)6(OH)2-2xO2x with x < 0.1). Above 1100 °C, the same interstitial mechanism leads to the formation of a Cu-rich HAp mixed-valence phase (Ca10Cu2+xCu+y(PO4)6(OH)2-2x-yO2x+y with x + y ∼ 0.5). The formation of both high-temperature Cu-doped α-TCP and Cu3(PO4)2 phases above 1100 °C induces a transformation into the Cu-rich HAp phase on cooling. The linear OCuO oxocuprate entity was confirmed by EXAFS spectroscopy, and the mixed Cu+/Cu2+ valence was evidenced by XPS analyses. Ionic releases (Cu+/Cu2+, Ca2+, PO42- and OH-) in water and in simulated body media were investigated on as-synthesized ceramics to establish a pretreatment before biological applications. Finally the cytotoxicity of pretreated disks was evaluated, and results confirm that Cu-doped BCP samples are promising bioceramics for bone substitutes and/or prosthesis coatings. STATEMENT OF SIGNIFICANCE Biphasic Calcium Phosphates (BCP) are bioceramics composed of hydroxyapatite (HAp, Ca10(PO4)6(OH)2) and beta-Tricalium Phosphate (β-TCP, Ca3(PO4)2). Because their chemical and mineral composition closely resembles that of the mineral component of bone, they are potentially interesting candidates for bone repair surgery. Doping can advantageously be used to improve their biological behaviors; however, it is important to describe the doping mechanism of BCP thoroughly in order to fully appraise the benefit of the doping process. The present paper scrutinizes in detail the incorporation of copper cation in order to correctly interpret the behavior of the Cu-doped bioceramic in biological fluid. The understanding of the copper doping mechanism, related to doping mechanism of others 3d-metal cations, makes it possible to explain the rates and kinetic of release of the dopant in biological medium. Finally, the knowledge of the behavior of the copper doped ceramic in biological environment allowed the tuning of its cytotoxicity properties. The present study resulted on pre-treated ceramic disks which have been evaluated as promising biocompatible ceramic for bone substitute and/or prosthesis coating: good adherence of bone marrow cells with good cell viability.
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Qazi TH, Hafeez S, Schmidt J, Duda GN, Boccaccini AR, Lippens E. Comparison of the effects of 45S5 and 1393 bioactive glass microparticles on hMSC behavior. J Biomed Mater Res A 2017; 105:2772-2782. [PMID: 28571113 PMCID: PMC5600111 DOI: 10.1002/jbm.a.36131] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Revised: 05/22/2017] [Accepted: 05/26/2017] [Indexed: 11/09/2022]
Abstract
Bioactive glasses (BAGs) are highly interesting materials for bone regeneration applications in orthopedic and dental defects. It is quite well known that ionic release from BAGs influences cell behavior and function. Mindful of the clinical scenario, we hypothesized that local cell populations might additionally physically interact with the implanted BAG particles and respond differently than to just the ionic stimuli. We therefore studied the biological effect of two BAG types (45S5 and 1393) applied to human mesenchymal stromal cells (hMSCs) in three distinct presentation modes: (a) direct contact; and to dissolution products in (b) 2D, and (c) 3D culture. We furthermore investigated how the dose-dependence of these BAG particles, in concentrations ranging from 0.1 to 2.5 w/v %, influenced hMSC metabolic activity, proliferation, and cell spreading. These cellular functions were significantly hampered when hMSCs were exposed to high concentrations of either glasses, but the effects were more pronounced in the 45S5 groups and when the cells were in direct contact with the BAGs. Furthermore the biological effect of 1393 BAG outperformed that of 45S5 BAG in all tested presentation modes. These outcomes highlight the importance of investigating cell-BAG interactions in experimental set-ups that recapitulate host cell interactions with BAG particles. © 2017 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 105A: 2772-2782, 2017.
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Affiliation(s)
- Taimoor H. Qazi
- Julius Wolff Institut, Charité, Universitätsmedizin BerlinBerlin13353Germany
- Berlin‐Brandenburg School for Regenerative Therapies, Charité, Universitätsmedizin BerlinBerlin13353Germany
| | - Shahzad Hafeez
- Julius Wolff Institut, Charité, Universitätsmedizin BerlinBerlin13353Germany
- Institute of Biomaterials, Department of Materials Science and Engineering, University of Erlangen‐NurembergErlangen91058Germany
- Present address:
MERLN Institute for Technology Inspired Regenerative MedicineUniversiteitssingel 406229 ERMaastrichtThe Netherlands
| | - Jochen Schmidt
- Institute of Particle Technology, University of Erlangen‐NurembergErlangen91058Germany
| | - Georg N. Duda
- Julius Wolff Institut, Charité, Universitätsmedizin BerlinBerlin13353Germany
- Berlin‐Brandenburg School for Regenerative Therapies, Charité, Universitätsmedizin BerlinBerlin13353Germany
- Berlin‐Brandenburg Center for Regenerative Therapies, Charité, Universitätsmedizin BerlinBerlin13353Germany
| | - Aldo R. Boccaccini
- Institute of Biomaterials, Department of Materials Science and Engineering, University of Erlangen‐NurembergErlangen91058Germany
| | - Evi Lippens
- Julius Wolff Institut, Charité, Universitätsmedizin BerlinBerlin13353Germany
- Berlin‐Brandenburg School for Regenerative Therapies, Charité, Universitätsmedizin BerlinBerlin13353Germany
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Craciun AM, Focsan M, Magyari K, Vulpoi A, Pap Z. Surface Plasmon Resonance or Biocompatibility-Key Properties for Determining the Applicability of Noble Metal Nanoparticles. MATERIALS (BASEL, SWITZERLAND) 2017; 10:E836. [PMID: 28773196 PMCID: PMC5551879 DOI: 10.3390/ma10070836] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Revised: 07/06/2017] [Accepted: 07/10/2017] [Indexed: 12/12/2022]
Abstract
Metal and in particular noble metal nanoparticles represent a very special class of materials which can be applied as prepared or as composite materials. In most of the cases, two main properties are exploited in a vast number of publications: biocompatibility and surface plasmon resonance (SPR). For instance, these two important properties are exploitable in plasmonic diagnostics, bioactive glasses/glass ceramics and catalysis. The most frequently applied noble metal nanoparticle that is universally applicable in all the previously mentioned research areas is gold, although in the case of bioactive glasses/glass ceramics, silver and copper nanoparticles are more frequently applied. The composite partners/supports/matrix/scaffolds for these nanoparticles can vary depending on the chosen application (biopolymers, semiconductor-based composites: TiO₂, WO₃, Bi₂WO₆, biomaterials: SiO₂ or P₂O₅-based glasses and glass ceramics, polymers: polyvinyl alcohol (PVA), Gelatin, polyethylene glycol (PEG), polylactic acid (PLA), etc.). The scientific works on these materials' applicability and the development of new approaches will be targeted in the present review, focusing in several cases on the functioning mechanism and on the role of the noble metal.
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Affiliation(s)
- Ana Maria Craciun
- Nanobiophotonics and Laser Microspectroscopy Center, Interdisciplinary Research Institute on Bio-Nano-Sciences, Babeș-Bolyai University, 400271 Cluj-Napoca, Romania.
| | - Monica Focsan
- Nanobiophotonics and Laser Microspectroscopy Center, Interdisciplinary Research Institute on Bio-Nano-Sciences, Babeș-Bolyai University, 400271 Cluj-Napoca, Romania.
| | - Klara Magyari
- Nanostructured Materials and Bio-Nano-Interfaces Center, Interdisciplinary Research Institute on Bio-Nano-Sciences, Babeș-Bolyai University, 400271 Cluj-Napoca, Romania.
| | - Adriana Vulpoi
- Nanostructured Materials and Bio-Nano-Interfaces Center, Interdisciplinary Research Institute on Bio-Nano-Sciences, Babeș-Bolyai University, 400271 Cluj-Napoca, Romania.
| | - Zsolt Pap
- Nanostructured Materials and Bio-Nano-Interfaces Center, Interdisciplinary Research Institute on Bio-Nano-Sciences, Babeș-Bolyai University, 400271 Cluj-Napoca, Romania.
- Institute of Environmental Science and Technology, University of Szeged, 6720 Szeged, Hungary.
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Bollino F, Armenia E, Tranquillo E. Zirconia/Hydroxyapatite Composites Synthesized Via Sol-Gel: Influence of Hydroxyapatite Content and Heating on Their Biological Properties. MATERIALS 2017; 10:ma10070757. [PMID: 28773116 PMCID: PMC5551800 DOI: 10.3390/ma10070757] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/17/2017] [Revised: 06/30/2017] [Accepted: 06/30/2017] [Indexed: 12/02/2022]
Abstract
Zirconia (ZrO2) and zirconia-based glasses and ceramics are materials proposed for use in the dental and orthopedic fields. In this work, ZrO2 glass was modified by adding different amounts of bioactive and biocompatible hydroxyapatite (HAp). ZrO2/HAp composites were synthesized via the sol-gel method and heated to different temperatures to induce modifications of their chemical structure, as ascertained by Fourier transform infrared spectroscopy (FTIR) analysis. The aim was to investigate the effect of both HAp content and heating on the biological performances of ZrO2. The materials’ bioactivity was studied by soaking samples in a simulated body fluid (SBF). FTIR and scanning electron microscopy (SEM)) analyses carried out after exposure to SBF showed that all materials are bioactive, i.e., they are able to form a hydroxyapatite layer on their surface. Moreover, the samples were soaked in a solution containing bovine serum albumin (BSA). FTIR analysis proved that the synthesized materials are able to adsorb the blood protein, the first step of cell adhesion. WST-8 ([2-(2-methoxy-4-nitrophenyl)-3-(4-nitrophenyl)-5-(2,4-disulfophenyl)-2H-tetrazolium, monosodium salt]) assay showed that no cytotoxicity effects were induced by the materials’ extract. However, the results proved that bioactivity increases with both the HAp content and the temperature used for the thermal treatment, whereas biocompatibility increases with heating but is not affected by the HAp content.
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Affiliation(s)
- Flavia Bollino
- Department of Industrial and Information Engineering, University of Campania "Luigi Vanvitelli", 81031 Aversa, Italy.
| | - Emilia Armenia
- Department of Cardiothoracic and Respiratory Sciences, University of Campania "Luigi Vanvitelli", 80131 Naples, Italy.
| | - Elisabetta Tranquillo
- Department of Industrial and Information Engineering, University of Campania "Luigi Vanvitelli", 81031 Aversa, Italy.
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Glauser S, Astasov-Frauenhoffer M, Müller JA, Fischer J, Waltimo T, Rohr N. Bacterial colonization of resin composite cements: influence of material composition and surface roughness. Eur J Oral Sci 2017; 125:294-302. [DOI: 10.1111/eos.12355] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/26/2017] [Indexed: 10/19/2022]
Affiliation(s)
- Stephanie Glauser
- Division of Dental Materials and Engineering; Department of Reconstructive Dentistry and Temporomandibular Disorders; University Center for Dental Medicine; University of Basel; Basel Switzerland
| | - Monika Astasov-Frauenhoffer
- Department of Preventive Dentistry and Oral Microbiology; University Center for Dental Medicine; University of Basel; Basel Switzerland
| | - Johannes A. Müller
- Division of Dental Materials and Engineering; Department of Reconstructive Dentistry and Temporomandibular Disorders; University Center for Dental Medicine; University of Basel; Basel Switzerland
| | - Jens Fischer
- Division of Dental Materials and Engineering; Department of Reconstructive Dentistry and Temporomandibular Disorders; University Center for Dental Medicine; University of Basel; Basel Switzerland
| | - Tuomas Waltimo
- Department of Preventive Dentistry and Oral Microbiology; University Center for Dental Medicine; University of Basel; Basel Switzerland
| | - Nadja Rohr
- Division of Dental Materials and Engineering; Department of Reconstructive Dentistry and Temporomandibular Disorders; University Center for Dental Medicine; University of Basel; Basel Switzerland
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Barba M, Di Taranto G, Lattanzi W. Adipose-derived stem cell therapies for bone regeneration. Expert Opin Biol Ther 2017; 17:677-689. [PMID: 28374644 DOI: 10.1080/14712598.2017.1315403] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
INTRODUCTION Cell-based therapies exploit the heterogeneous and self-sufficient biological environment of stem cells to restore, maintain and improve tissue functions. Adipose-derived stem cells (ASCs) are, to this aim, promising cell types thanks to advantageous isolation procedures, growth kinetics, plasticity and trophic properties. Specifically, bone regeneration represents a suitable, though often challenging, target setting to test and apply ASC-based therapeutic strategies. Areas covered: ASCs are extremely plastic and secrete bioactive peptides that mediate paracrine functions, mediating their trophic actions in vivo. Numerous preclinical studies demonstrated that ASCs improve bone healing. Clinical trials are ongoing to validate the clinical feasibility of these approaches. This review is intended to define the state-of-the-art on ASCs, encompassing the biological features that make them suitable for bone regenerative strategies, and to provide an update on existing preclinical and clinical applications. Expert opinion: ASCs offer numerous advantages over other stem cells in terms of feasibility of clinical translation. Data obtained from in vivo experimentation are encouraging, and clinical trials are ongoing. More robust validations are thus expected to be achieved during the next few years, and will likely pave the way to optimized patient-tailored treatments for bone regeneration.
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Affiliation(s)
- Marta Barba
- a Institute of Anatomy and Cell Biology , Università Cattolica del Sacro Cuore , Rome , Italy
| | - Giuseppe Di Taranto
- b Department of Plastic, Reconstructive and Aesthetic Surgery , University of Rome "Sapienza" , Policlinico Umberto I, Rome , Italy
| | - Wanda Lattanzi
- a Institute of Anatomy and Cell Biology , Università Cattolica del Sacro Cuore , Rome , Italy
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Renaudin G, Gomes S, Nedelec JM. First-Row Transition Metal Doping in Calcium Phosphate Bioceramics: A Detailed Crystallographic Study. MATERIALS (BASEL, SWITZERLAND) 2017; 10:E92. [PMID: 28772452 PMCID: PMC5344588 DOI: 10.3390/ma10010092] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Revised: 01/06/2017] [Accepted: 01/18/2017] [Indexed: 11/16/2022]
Abstract
Doped calcium phosphate bioceramics are promising materials for bone repair surgery because of their chemical resemblance to the mineral constituent of bone. Among these materials, BCP samples composed of hydroxyapatite (Ca10(PO₄)₆(OH)₂) and β-TCP (Ca₃(PO₄)₂) present a mineral analogy with the nano-multi-substituted hydroxyapatite bio-mineral part of bones. At the same time, doping can be used to tune the biological properties of these ceramics. This paper presents a general overview of the doping mechanisms of BCP samples using cations from the first-row transition metals (from manganese to zinc), with respect to the applied sintering temperature. The results enable the preparation of doped synthetic BCP that can be used to tailor biological properties, in particular by tuning the release amounts upon interaction with biological fluids. Intermediate sintering temperatures stabilize the doping elements in the more soluble β-TCP phase, which favors quick and easy release upon integration in the biological environment, whereas higher sintering temperatures locate the doping elements in the weakly soluble HAp phase, enabling a slow and continuous supply of the bio-inspired properties. An interstitial doping mechanism in the HAp hexagonal channel is observed for the six investigated cations (Mn2+, Fe3+, Co2+, Ni2+, Cu2+ and Zn2+) with specific characteristics involving a shift away from the center of the hexagonal channel (Fe3+, Co2+), cationic oxidation (Mn3+, Co3+), and also cationic reduction (Cu⁺). The complete crystallochemical study highlights a complex HAp doping mechanism, mainly realized by an interstitial process combined with calcium substitution for the larger cations of the series leading to potentially calcium deficient HAp.
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Affiliation(s)
- Guillaume Renaudin
- Université Clermont Auvergne, CNRS, SIGMA Clermont, Institut de Chimie de Clermont-Ferrand, F-63000 Clermont-Ferrand, France.
| | - Sandrine Gomes
- Université Clermont Auvergne, CNRS, SIGMA Clermont, Institut de Chimie de Clermont-Ferrand, F-63000 Clermont-Ferrand, France.
| | - Jean-Marie Nedelec
- Université Clermont Auvergne, CNRS, SIGMA Clermont, Institut de Chimie de Clermont-Ferrand, F-63000 Clermont-Ferrand, France.
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Wang L, Yang X, Cao W, Shi C, Zhou P, Li Q, Han F, Sun J, Xing X, Li B. Mussel-inspired deposition of copper on titanium for bacterial inhibition and enhanced osseointegration in a periprosthetic infection model. RSC Adv 2017. [DOI: 10.1039/c7ra10203h] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Periprosthetic infection represents one of the most devastating complications in orthopedic surgeries.
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