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Sanhueza C, Pavéz M, Hermosilla J, Rocha S, Valdivia-Gandur I, Manzanares MC, Beltrán V, Acevedo F. Poly-3-hydroxybutyrate-silver nanoparticles membranes as advanced antibiofilm strategies for combatting peri-implantitis. Int J Biol Macromol 2024; 269:131974. [PMID: 38692546 DOI: 10.1016/j.ijbiomac.2024.131974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 04/26/2024] [Accepted: 04/28/2024] [Indexed: 05/03/2024]
Abstract
Dental implant success is threatened by peri-implantitis, an inflammation leading to implant failure. Conventional treatments struggle with the intricate microbial and host factors involved. Antibacterial membranes, acting as barriers and delivering antimicrobials, may offer a promising solution. Thus, this study highlights the potential of developing antibacterial membranes of poly-3-hydroxybutyrate and silver nanoparticles (Ag Nps) to address peri-implantitis challenges, discussing design and efficacy against potential pathogens. Electrospun membranes composed of PHB microfibers and Ag Nps were synthesized in a blend of DMF/chloroform at three different concentrations. Various studies were conducted on the characterization and antimicrobial activity of the membranes. The synthesized Ag Nps ranged from 4 to 8 nm in size. Furthermore, Young's modulus decreased, reducing from 13.308 MPa in PHB membranes without Ag Nps to 0.983 MPa in PHB membranes containing higher concentrations of Ag Nps. This demonstrates that adding Ag Nps results in a less stiff membrane. An increase in elongation at break was noted with the rise in Ag Nps concentration, from 23.597 % in PHB membranes to 60.136 % in PHB membranes loaded with Ag Nps. The antibiotic and antibiofilm activity of the membranes were evaluated against Pseudomonas aeruginosa, Staphylococcus aureus, Streptococcus mutans, and Candida albicans. The results indicated that all PHB membranes containing Ag Nps exhibited potent antibacterial activity by inhibiting the growth of biofilms and planktonic bacteria. However, inhibition of C. albicans occurred only with the PHB-Ag Nps C membrane. These findings emphasize the versatility and potential of Ag Nps-incorporated membranes as a multifunctional approach for preventing and addressing microbial infections associated with peri-implantitis. The combination of antibacterial and antibiofilm properties in these membranes holds promise for improving the management and treatment of peri-implantitis-related complications.
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Affiliation(s)
- Claudia Sanhueza
- Center of Excellence in Translational Medicine - Scientific and Technology Bioresource Nucleus (CEMT- BIOREN), Faculty of Medicine, Universidad de La Frontera, Temuco, Chile; Scientific and Technological Bioresource Nucleus (BIOREN), Universidad de La Frontera, Temuco, Chile
| | - Mónica Pavéz
- Center of Excellence in Translational Medicine - Scientific and Technology Bioresource Nucleus (CEMT- BIOREN), Faculty of Medicine, Universidad de La Frontera, Temuco, Chile
| | - Jeyson Hermosilla
- Center of Excellence in Translational Medicine - Scientific and Technology Bioresource Nucleus (CEMT- BIOREN), Faculty of Medicine, Universidad de La Frontera, Temuco, Chile; Doctoral Program in Sciences of Natural Resources, Universidad de La Frontera, Casilla 54-D, Temuco, Chile; Scientific and Technological Bioresource Nucleus (BIOREN), Universidad de La Frontera, Temuco, Chile
| | - Sebastián Rocha
- Escuela de Ingeniería, Facultad de Ciencias, Ingeniería y Tecnología, Universidad Mayor, Temuco, Chile
| | - Iván Valdivia-Gandur
- Biomedical Department, Universidad de Antofagasta, Av. Angamos 601, Antofagasta, Chile
| | - María-Cristina Manzanares
- Human Anatomy and Embryology Unit, Experimental Pathology and Therapeutics Department, Faculty of Medicine and Health Sciences, Universitat de Barcelona, Barcelona, Spain
| | - Víctor Beltrán
- Center of Excellence in Translational Medicine - Scientific and Technology Bioresource Nucleus (CEMT- BIOREN), Faculty of Medicine, Universidad de La Frontera, Temuco, Chile; Clinical Investigation and Dental Innovation Center (CIDIC), Dental School, Universidad de La Frontera, Temuco, Chile; Scientific and Technological Bioresource Nucleus (BIOREN), Universidad de La Frontera, Temuco, Chile.
| | - Francisca Acevedo
- Center of Excellence in Translational Medicine - Scientific and Technology Bioresource Nucleus (CEMT- BIOREN), Faculty of Medicine, Universidad de La Frontera, Temuco, Chile; Scientific and Technological Bioresource Nucleus (BIOREN), Universidad de La Frontera, Temuco, Chile; Department of Basic Sciences, Faculty of Medicine, Universidad de La Frontera, Casilla 54-D, Temuco, Chile.
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2
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Siva Prasad P, Byram PK, Hazra C, Chakravorty N, Sen R, Das S, Das K. Biosurfactant-Assisted Cu Doping of Brushite Coatings: Enhancing Structural, Electrochemical, and Biofunctional Properties. ACS APPLIED MATERIALS & INTERFACES 2024; 16:10601-10622. [PMID: 38376231 DOI: 10.1021/acsami.3c15471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/21/2024]
Abstract
Stainless steel (316L SS) has been widely used in orthopedic, cardiovascular stents, and other biomedical implant applications due to its strength, corrosion resistance, and biocompatibility. To address the weak interaction between steel implants and tissues, it is a widely adopted strategy to enhance implant performance through the application of bioactive coatings. In this study, Cu-doped brushite coatings were deposited successfully through pulse electrodeposition on steel substrates facilitated with a biosurfactant (BS) (i.e., surfactin). Further, the combined effect of various concentrations of Cu ions and BS on the structural, electrochemical, and biological properties was studied. The X-ray diffraction (XRD) confirms brushite composition with Cu substitution causing lattice contraction and a reduced crystallite size. The scanning electron microscopy (SEM) and energy-dispersive spectroscopy (EDS) studies reveal the morphological changes of the coatings with the incorporation of Cu, which is confirmed by X-ray photoelectron spectroscopy (XPS) and elemental mapping. The Fourier transform infrared (FTIR) and Raman spectroscopy confirm the brushite and Cu doping in the coatings, respectively. Increased surface roughness and mechanical properties of Cu-doped coatings were analyzed by using atomic force microscopic (AFM) and nanohardness tests, respectively. Electrochemical assessments demonstrate corrosion resistance enhancement in Cu-doped coatings, which is further improved with the addition of biosurfactants. In vitro biomineralization studies show the Cu-doped coating's potential for osseointegration, with added stability. The cytocompatibility of the coatings was analyzed using live/dead and 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) assays; cell adhesion, proliferation, and migration studies were evaluated using SEM. Antibacterial assays highlight significant improvement in the antibacterial properties of Cu-doped coatings with BS. Thus, the developed Cu-doped brushite coatings with BS demonstrate their potential in the realm of biomedical implant technologies, paving the way for further exploration.
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Affiliation(s)
- Pakanati Siva Prasad
- Department of Metallurgical and Materials Engineering, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Prasanna Kumar Byram
- School of Medical Science and Technology, Indian Institute of Technology Kharagpur, Kharagpur721302, India
| | - Chinmay Hazra
- Department of Biotechnology, Indian Institute of Technology Kharagpur, Kharagpur721302, India
| | - Nishant Chakravorty
- School of Medical Science and Technology, Indian Institute of Technology Kharagpur, Kharagpur721302, India
| | - Ramkrishna Sen
- Department of Biotechnology, Indian Institute of Technology Kharagpur, Kharagpur721302, India
| | - Siddhartha Das
- Department of Metallurgical and Materials Engineering, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Karabi Das
- Department of Metallurgical and Materials Engineering, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
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3
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Chen K, Wang Y, Tang H, Niu X, Yang H, Bai Y, Gu X, Zheng Y. Fabrication of a Nanoscale Magnesium/Copper Metal-Organic Framework on Zn-Based Guided Bone Generation Membranes for Enhancing Osteogenesis, Angiogenesis, and Bacteriostasis Properties. ACS APPLIED MATERIALS & INTERFACES 2024; 16:5648-5665. [PMID: 38267388 DOI: 10.1021/acsami.3c16970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2024]
Abstract
Recently, zinc (Zn) and its alloys have demonstrated great potential as guided bone regeneration (GBR) membranes to treat the problems of insufficient alveolar bone volume and long-term osseointegration instability during dental implantology. However, bone regeneration is a complex process consisting of osteogenesis, angiogenesis, and antibacterial function. For now, the in vivo osteogenic performance and antibacterial activity of pure Zn are inadequate, and thus fabricating a platform to endow Zn membranes with multifunctions may be essential to address these issues. In this study, various bimetallic magnesium/copper metal-organic framework (Mg/Cu-MOF) coatings were fabricated and immobilized on pure Zn. The results indicated that the degradation rate and water stability of Mg/Cu-MOF coatings could be regulated by controlling the feeding ratio of Cu2+. As the coating and Zn substrate degraded, an alkaline microenvironment enriched with Zn2+, Mg2+, and Cu2+ was generated. It significantly improved calcium phosphate deposition, differentiation of osteoblasts, and vascularization of endothelial cells in the extracts. Among them, Mg/Cu1 showed the best comprehensive performance. The superior antibacterial activity of Mg/Cu1 was demonstrated in vitro and in vivo, which indicated significantly enhanced bacteriostatic activity against Gram-positive Staphylococcus aureus and Gram-negative Escherichia coli as compared to that of the bare sample. Bimetallic Mg/Cu-MOF coating could properly coordinate the multifunction on a Zn membrane and could be a promising platform for promoting its bone regeneration, which could pave the way for Zn-based materials to be used as barrier membranes in oral clinical trials.
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Affiliation(s)
- Kai Chen
- Key Laboratory of Biomechanics and Mechanobiology (Beihang University), Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing 100083, China
- School of Materials Science and Engineering, Peking University, Beijing 100871, China
| | - Yifan Wang
- Key Laboratory of Biomechanics and Mechanobiology (Beihang University), Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing 100083, China
| | - Hongyan Tang
- Key Laboratory of Biomechanics and Mechanobiology (Beihang University), Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing 100083, China
| | - Xufeng Niu
- Key Laboratory of Biomechanics and Mechanobiology (Beihang University), Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing 100083, China
| | - Hongtao Yang
- School of Engineering Medicine, Beihang University, Beijing 100083, China
| | - Yanjie Bai
- Stomatology Department, Peking University Third Hospital, Beijing 100191, China
| | - Xuenan Gu
- Key Laboratory of Biomechanics and Mechanobiology (Beihang University), Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing 100083, China
| | - Yufeng Zheng
- School of Materials Science and Engineering, Peking University, Beijing 100871, China
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4
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Restivo E, Pugliese D, Gallichi-Nottiani D, Sammartino JC, Bloise N, Peluso E, Percivalle E, Janner D, Milanese D, Visai L. Effect of Low Copper Doping on the Optical, Cytocompatible, Antibacterial, and SARS-CoV-2 Trapping Properties of Calcium Phosphate Glasses. ACS OMEGA 2023; 8:42264-42274. [PMID: 38024754 PMCID: PMC10652837 DOI: 10.1021/acsomega.3c04293] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Accepted: 10/04/2023] [Indexed: 12/01/2023]
Abstract
Calcium phosphate glasses (CPGs) are acquiring great importance in the biomedical field because of their thermomechanical and bioresorbable properties. In this study, optically transparent copper (1 mol %)-doped calcium phosphate glasses (CPGs_Cu) were prepared through the melt-quenching method, and their biocompatibility and antibacterial and antiviral properties were evaluated and compared with undoped CPGs. Biocompatibility was evaluated on murine fibroblast NIH-3T3 cells as a preliminary study of cytocompatibility. The in vitro tests were performed through indirect and direct cytotoxicity analyses by MTT and Alamar Blue assays and supported by electron microscopy observations. Microbiological analyses were performed against the most common Gram-negative and Gram-positive pathogens that cause nosocomial infections: Escherichia coli, Pseudomonas aeruginosa, Klebsiella pneumoniae, Staphylococcus aureus, and the methicillin-resistant Staphylococcus aureus strain. In addition, the bioglass samples were exposed to SARS-CoV-2 to assess their effects on viral survival. The obtained results assessed the biocompatibility of both bioglass types and their ability to reduce the viral load and trap the virus. In addition, Cu2+-doped bioglass was found to be antibacterial despite its low content (1 mol %) of copper, making this a promising candidate material for biomedical applications, e.g., surgery probes, drug delivery, and photodynamic therapy.
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Affiliation(s)
- Elisa Restivo
- Department
of Molecular Medicine, Center for Health Technologies, UdR INSTM, University of Pavia, Pavia27100,Italy
| | - Diego Pugliese
- Department
of Applied Science and Technology, UdR INSTM, Politecnico di Torino, Torino10129,Italy
| | | | - José Camilla Sammartino
- Department
of Clinical, Surgical, Diagnostic and Pediatric Sciences, University of Pavia, Pavia27100,Italy
| | - Nora Bloise
- Department
of Molecular Medicine, Center for Health Technologies, UdR INSTM, University of Pavia, Pavia27100,Italy
- Medicina
Clinica-Specialistica, UOR5 Laboratorio di Nanotecnologie, ICS Maugeri, IRCCS, Pavia27100,Italy
| | - Emanuela Peluso
- Department
of Molecular Medicine, Center for Health Technologies, UdR INSTM, University of Pavia, Pavia27100,Italy
| | - Elena Percivalle
- Molecular
Virology Unit, Microbiology and Virology Department, Fondazione IRCCS Policlinico San Matteo, Pavia27100,Italy
| | - Davide Janner
- Department
of Applied Science and Technology, UdR INSTM, Politecnico di Torino, Torino10129,Italy
| | - Daniel Milanese
- Department
of Engineering and Architecture, UdR INSTM, University of Parma, Parma43121,Italy
| | - Livia Visai
- Department
of Molecular Medicine, Center for Health Technologies, UdR INSTM, University of Pavia, Pavia27100,Italy
- Medicina
Clinica-Specialistica, UOR5 Laboratorio di Nanotecnologie, ICS Maugeri, IRCCS, Pavia27100,Italy
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5
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Wang Z, Xu Z, Yang X, Li M, Yip RCS, Li Y, Chen H. Current application and modification strategy of marine polysaccharides in tissue regeneration: A review. BIOMATERIALS ADVANCES 2023; 154:213580. [PMID: 37634336 DOI: 10.1016/j.bioadv.2023.213580] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Revised: 07/24/2023] [Accepted: 08/04/2023] [Indexed: 08/29/2023]
Abstract
Marine polysaccharides (MPs) are exceptional bioactive materials that possess unique biochemical mechanisms and pharmacological stability, making them ideal for various tissue engineering applications. Certain MPs, including agarose, alginate, carrageenan, chitosan, and glucan have been successfully employed as biological scaffolds in animal studies. As carriers of signaling molecules, scaffolds can enhance the adhesion, growth, and differentiation of somatic cells, thereby significantly improving the tissue regeneration process. However, the biological benefits of pure MPs composite scaffold are limited. Therefore, physical, chemical, enzyme modification and other methods are employed to expand its efficacy. Chemically, the structural properties of MPs scaffolds can be altered through modifications to functional groups or molecular weight reduction, thereby enhancing their biological activities. Physically, MPs hydrogels and sponges emulate the natural extracellular matrix, creating a more conducive environment for tissue repair. The porosity and high permeability of MPs membranes and nanomaterials expedite wound healing. This review explores the distinctive properties and applications of select MPs in tissue regeneration, highlighting their structural versatility and biological applicability. Additionally, we provide a brief overview of common modification strategies employed for MP scaffolds. In conclusion, MPs have significant potential and are expected to be a novel regenerative material for tissue engineering.
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Affiliation(s)
- Zhaokun Wang
- Marine College, Shandong University, NO. 180 Wenhua West Road, Gao Strict, Weihai 264209, China.
| | - Zhiwen Xu
- Marine College, Shandong University, NO. 180 Wenhua West Road, Gao Strict, Weihai 264209, China.
| | - Xuan Yang
- Marine College, Shandong University, NO. 180 Wenhua West Road, Gao Strict, Weihai 264209, China.
| | - Man Li
- Marine College, Shandong University, NO. 180 Wenhua West Road, Gao Strict, Weihai 264209, China.
| | - Ryan Chak Sang Yip
- Center for Nanomedicine, Department of Anesthesiology, Perioperative and Pain Medicine, Brigham and Women's Hospital, Boston, MA 02115, USA.
| | - Yuanyuan Li
- Department of Food Science, Cornell University, Stocking Hall, Ithaca, NY 14853, USA.
| | - Hao Chen
- Marine College, Shandong University, NO. 180 Wenhua West Road, Gao Strict, Weihai 264209, China; The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, Jiangnan University, NO. 1800 Lihu Road, Wuxi 214122, China.
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6
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Vafa E, Tayebi L, Abbasi M, Azizli MJ, Bazargan-Lari R, Talaiekhozani A, Zareshahrabadi Z, Vaez A, Amani AM, Kamyab H, Chelliapan S. A better roadmap for designing novel bioactive glasses: effective approaches for the development of innovative revolutionary bioglasses for future biomedical applications. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:116960-116983. [PMID: 36456674 DOI: 10.1007/s11356-022-24176-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2022] [Accepted: 11/08/2022] [Indexed: 06/17/2023]
Abstract
The introduction of bioactive glasses (BGs) precipitated a paradigm shift in the medical industry and opened the path for the development of contemporary regenerative medicine driven by biomaterials. This composition can bond to live bone and can induce osteogenesis by the release of physiologically active ions. 45S5 BG products have been transplanted effectively into millions of patients around the world, primarily to repair bone and dental defects. Over the years, many other BG compositions have been introduced as innovative biomaterials for repairing soft tissue and delivering drugs. When research first started, many of the accomplishments that have been made today were unimaginable. It appears that the true capacity of BGs has not yet been realized. Because of this, research involving BGs is extremely fascinating. However, to be successful, it requires interdisciplinary cooperation between physicians, glass chemists, and bioengineers. The present paper gives a picture of the existing clinical uses of BGs and illustrates key difficulties deserving to be faced in the future. The challenges range from the potential for BGs to be used in a wide variety of applications. We have high hopes that this paper will be of use to both novice researchers, who are just beginning their journey into the world of BGs, as well as seasoned scientists, in that it will promote conversation regarding potential additional investigation and lead to the discovery of innovative medical applications for BGs.
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Affiliation(s)
- Ehsan Vafa
- Department of Medical Nanotechnology, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Lobat Tayebi
- Marquette University School of Dentistry, Milwaukee, WI, USA
| | - Milad Abbasi
- Department of Medical Nanotechnology, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mohammad Javad Azizli
- Department of Chemistry and Chemical Engineering, Islamic Azad University, Rasht, Rasht Branch, Iran
| | - Reza Bazargan-Lari
- Department of Materials Science and Engineering, Marvdasht Branch, Islamic Azad University, Marvdasht, Iran
| | - Amirreza Talaiekhozani
- Department of Civil Engineering, Jami Institute of Technology, Isfahan, Iran
- Alavi Educational and Cultural Complex, Shiraz, Iran
| | - Zahra Zareshahrabadi
- Basic Sciences in Infectious Diseases Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Ahmad Vaez
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran.
| | - Ali Mohamad Amani
- Department of Medical Nanotechnology, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Hesam Kamyab
- Malaysia-Japan International Institute of Technology, Universiti Teknologi Malaysia, Jalan Sultan Yahya Petra, 54100, Kuala Lumpur, Malaysia
- Department of Biomaterials, Saveetha Dental College and Hospital, Saveetha Institute of Medical and Technical Sciences, Chennai 600077, India, Chennai, India
| | - Shreeshivadasan Chelliapan
- Engineering Department, Razak Faculty of Technology & Informatics, Universiti Teknologi Malaysia, Jalan Sultan Yahya Petra, 54100, Kuala Lumpur, Malaysia
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7
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Xu Y, Xu C, Yang K, Ma L, Li G, Shi Y, Feng X, Tan L, Duan D, Luo Z, Yang C. Copper Ion-Modified Germanium Phosphorus Nanosheets Integrated with an Electroactive and Biodegradable Hydrogel for Neuro-Vascularized Bone Regeneration. Adv Healthc Mater 2023; 12:e2301151. [PMID: 37421228 DOI: 10.1002/adhm.202301151] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 06/21/2023] [Indexed: 07/10/2023]
Abstract
Severe bone defects accompanied by vascular and peripheral nerve injuries represent a huge orthopedic challenge and are often accompanied by the risk of infection. Thus, biomaterials with antibacterial and neurovascular regeneration properties are highly desirable. Here, a newly designed biohybrid biodegradable hydrogel (GelMA) containing copper ion-modified germanium-phosphorus (GeP) nanosheets, which act as neuro-vascular regeneration and antibacterial agents, is designed. The copper ion modification process serves to improve the stability of the GeP nanosheets and offers a platform for the sustained release of bioactive ions. Study findings show that GelMA/GeP@Cu has effective antibacterial properties. The integrated hydrogel can significantly boost the osteogenic differentiation of bone marrow mesenchymal stem cells, facilitate angiogenesis in human umbilical vein endothelial cells, and up-regulate neural differentiation-related proteins in neural stem cells in vitro. In vivo, in the rat calvarial bone defect mode, the GelMA/GeP@Cu hydrogel is found to enhance angiogenesis and neurogenesis, eventually contributing to bone regeneration. These findings indicate that in the field of bone tissue engineering, GelMA/GeP@Cu can serve as a valuable biomaterial for neuro-vascularized bone regeneration and infection prevention.
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Affiliation(s)
- Yan Xu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Chao Xu
- College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Kun Yang
- College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Liang Ma
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Gaocai Li
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Yunsong Shi
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Xiaobo Feng
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Lei Tan
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Deyu Duan
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Zhiqiang Luo
- College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Cao Yang
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430074, China
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8
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Foroutan F, Kyffin BA, Nikolaou A, Merino-Gutierrez J, Abrahams I, Kanwal N, Knowles JC, Smith AJ, Smales GJ, Carta D. Highly porous phosphate-based glasses for controlled delivery of antibacterial Cu ions prepared via sol-gel chemistry. RSC Adv 2023; 13:19662-19673. [PMID: 37396829 PMCID: PMC10308344 DOI: 10.1039/d3ra02958a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Accepted: 06/07/2023] [Indexed: 07/04/2023] Open
Abstract
Mesoporous glasses are a promising class of bioresorbable biomaterials characterized by high surface area and extended porosity in the range of 2 to 50 nm. These peculiar properties make them ideal materials for the controlled release of therapeutic ions and molecules. Whilst mesoporous silicate-based glasses (MSG) have been widely investigated, much less work has been done on mesoporous phosphate-based glasses (MPG). In the present study, MPG in the P2O5-CaO-Na2O system, undoped and doped with 1, 3, and 5 mol% of Cu ions were synthesized via a combination of the sol-gel method and supramolecular templating. The non-ionic triblock copolymer Pluronic P123 was used as a templating agent. The porous structure was studied via a combination of Scanning Electron Microscopy (SEM), Small-Angle X-ray Scattering (SAXS), and N2 adsorption-desorption analysis at 77 K. The structure of the phosphate network was investigated via solid state 31P Magic Angle Spinning Nuclear Magnetic Resonance (31P MAS-NMR) and Fourier Transform Infrared (FTIR) spectroscopy. Degradation studies, performed in water via Inductively Coupled Plasma-Optical Emission Spectroscopy (ICP-OES), showed that phosphates, Ca2+, Na+ and Cu ions are released in a controlled manner over a 7 days period. The controlled release of Cu, proportional to the copper loading, imbues antibacterial properties to MPG. A significant statistical reduction of Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli) bacterial viability was observed over a 3 days period. E. coli appeared to be more resistant than S. aureus to the antibacterial effect of copper. This study shows that copper doped MPG have great potential as bioresorbable materials for controlled delivery of antibacterial ions.
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Affiliation(s)
- Farzad Foroutan
- School of Chemistry and Chemical Engineering, University of Surrey Guildford UK
| | - Benjamin A Kyffin
- School of Chemistry and Chemical Engineering, University of Surrey Guildford UK
| | - Athanasios Nikolaou
- School of Chemistry and Chemical Engineering, University of Surrey Guildford UK
| | | | - Isaac Abrahams
- Department of Chemistry, Queen Mary University of London Mile End Road London E1 4NS UK
| | - Nasima Kanwal
- Department of Chemistry, Queen Mary University of London Mile End Road London E1 4NS UK
| | - Jonathan C Knowles
- Division of Biomaterials and Tissue Engineering, University College London London UK
- Department of Nanobiomedical Science & BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University Cheonan Republic of Korea
- UCL Eastman-Korea Dental Medicine Innovation Centre, Dankook University Cheonan Republic of Korea
| | - Andrew J Smith
- Diamond Light Source Ltd, Diamond House, Harwell Science and Innovation Campus Didcot, Oxfordshire OX11 0DE UK
| | - Glen J Smales
- Bundesanstalt für Materialforschung und -prüfung (BAM) Berlin Germany
| | - Daniela Carta
- School of Chemistry and Chemical Engineering, University of Surrey Guildford UK
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9
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Meena Narayana Menon D, Pugliese D, Giardino M, Janner D. Laser-Induced Fabrication of Micro-Optics on Bioresorbable Calcium Phosphate Glass for Implantable Devices. MATERIALS (BASEL, SWITZERLAND) 2023; 16:ma16113899. [PMID: 37297033 DOI: 10.3390/ma16113899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 05/17/2023] [Accepted: 05/19/2023] [Indexed: 06/12/2023]
Abstract
In this study, a single-step nanosecond laser-induced generation of micro-optical features is demonstrated on an antibacterial bioresorbable Cu-doped calcium phosphate glass. The inverse Marangoni flow of the laser-generated melt is exploited for the fabrication of microlens arrays and diffraction gratings. The process is realized in a matter of few seconds and, by optimizing the laser parameters, micro-optical features with a smooth surface are obtained showing a good optical quality. The tunability of the microlens' dimensions is achieved by varying the laser power, allowing the obtaining of multi-focal microlenses that are of great interest for three-dimensional (3D) imaging. Furthermore, the microlens' shape can be tuned between hyperboloid and spherical. The fabricated microlenses exhibited good focusing and imaging performance and the variable focal lengths were measured experimentally, showing good agreement with the calculated values. The diffraction gratings obtained by this method showed the typical periodic pattern with a first-order efficiency of about 5.1%. Finally, the dissolution characteristics of the fabricated micropatterns were studied in a phosphate-buffered saline solution (PBS, pH = 7.4) demonstrating the bioresorbability of the micro-optical components. This study offers a new approach for the fabrication of micro-optics on bioresorbable glass, which could enable the manufacturing of new implantable optical sensing components for biomedical applications.
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Affiliation(s)
- Devanarayanan Meena Narayana Menon
- Department of Applied Science and Technology (DISAT) and RU INSTM, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
| | - Diego Pugliese
- Department of Applied Science and Technology (DISAT) and RU INSTM, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
| | - Matteo Giardino
- Department of Applied Science and Technology (DISAT) and RU INSTM, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
| | - Davide Janner
- Department of Applied Science and Technology (DISAT) and RU INSTM, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
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10
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Shetty S, Sekar P, Shetty RM, Abou Neel EA. Antibacterial and Antibiofilm Efficacy of Copper-Doped Phosphate Glass on Pathogenic Bacteria. Molecules 2023; 28:molecules28073179. [PMID: 37049941 PMCID: PMC10096066 DOI: 10.3390/molecules28073179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 03/02/2023] [Accepted: 03/06/2023] [Indexed: 04/07/2023] Open
Abstract
This study aimed to investigate the antibacterial [minimal inhibitory concentration (MIC) and minimal bactericidal concentration (MBC)] and antibiofilm activity [log10 colony forming unit/mL (CFU/mL) and biofilm disruption] of copper-doped phosphate glass (CDPG) against Streptococcus oralis, Enterococcus faecalis, Lactobacillus casei, Staphylococcus aureus, Escherichia coli, and Pseudomonas aeruginosa. Methods: the antibacterial activity was determined using microbroth dilution and time-kill assay. The antibiofilm activity was investigated using crystal violet and confocal laser scanning microscopy. Bacteria growing in absence of CDPG were used as controls. Results: the MIC was ≥125 mg of CPDG/mL; the log10 CFU/mL reduction ranged from 2.66–3.14 to 6.23–9.65 after 4 and 24 h respectively. Generally, no growth was observed after 24 h of treatment with CDPG; the MBC was 250 mg/mL for L. casei and S. oralis while 500 mg/mL for the rest of the bacteria. The highest and lowest antibiofilm activity was observed against S. oralis and E. coli respectively. Three patterns of complete biofilm disruption were seen: (i) large areas with E. fecalis and S. oralis, (ii) medium-size pockets with S. aureus and P. aeruginosa, or (iii) small areas with E. coli and L. casei. Conclusion: CDPG can be potentially used as an antibacterial and an antibiofilm agent against oral biofilm-forming bacteria.
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Affiliation(s)
- Sunaina Shetty
- Preventive and Restorative Dentistry Department, College of Dental Medicine, University of Sharjah, Sharjah P.O. Box 27272, United Arab Emirates
| | - Priyadharshini Sekar
- RIMHS, Sharjah Institute for Medical Research, University of Sharjah, Sharjah P.O. Box 27272, United Arab Emirates
| | - Raghavendra M. Shetty
- Department of Clinical Sciences, College of Dentistry, Ajman University, Ajman P.O. Box 346, United Arab Emirates
- Center of Medical and Bio-Allied Health Sciences Research, Ajman University, Ajman P.O. Box 346, United Arab Emirates
- Department of Pediatric and Preventive Dentistry, Sharad Pawar Dental College and Hospital, Datta Meghe Institute of Higher Education and Research (Deemed-to-be University), Wardha 442001, India
| | - Ensanya Ali Abou Neel
- Preventive and Restorative Dentistry Department, College of Dental Medicine, University of Sharjah, Sharjah P.O. Box 27272, United Arab Emirates
- UCL Eastman Dental Institute, Biomaterials & Tissue Engineering, Royal Free Hospital, Rowland Hill Street, London NW3 2QG, UK
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11
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Pan C, Yang G, Yang H, Wang L, Jiang J, Zhang Y, Wu F. Facile fabrication of steam-exploded poplar loaded with non-metal-doped Ni-Fe nanoparticles: catalytic activities in 4-nitrophenol reduction and electrocatalytic reaction. ARAB J CHEM 2022. [DOI: 10.1016/j.arabjc.2022.103944] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
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Surface functionalization with copper endows carbonate apatite honeycomb scaffold with antibacterial, proangiogenic, and pro-osteogenic activities. BIOMATERIALS ADVANCES 2022; 135:212751. [PMID: 35929223 DOI: 10.1016/j.bioadv.2022.212751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 02/04/2022] [Accepted: 03/04/2022] [Indexed: 11/22/2022]
Abstract
Osteomyelitis is a potentially devastating inflammatory bone disease that leads to bone destruction and loss. Treatment of osteomyelitis requires the removal of residual bacteria as well as osteogenesis with angiogenesis at the site of treatment. Use of an appropriate amount of copper (Cu) in treatment scaffolds may achieve these goals without the risk of toxicity. In this study, the surface of the carbonate apatite honeycomb scaffold was functionalized with Cu through a dissolution-precipitation reaction. The resulting scaffolds retained the honeycomb structure after immersion in CuCl2 solution, and Cu was precipitated on the surface as libethenite [Cu2(OH)PO4]. The surface Cu concentration was controlled by the concentration of the CuCl2 solution. Scaffolds with a surface Cu concentration of 23.8 wt% exhibited antibacterial and cytotoxic effects, whereas those with concentrations of ≤4.6 wt% exerted antibacterial effects without negatively affecting the cellular adhesion, proliferation, differentiation, and calcification of osteoblast-like cells. Furthermore, scaffolds with a surface Cu concentration of 4.6 wt% Cu inhibited bacterial growth for at least 28 days and displayed proangiogenic and pro-osteogenic activities in vivo. These data confirm the success in functionalizing scaffolds with Cu that may be utilized as an innovative osteomyelitis therapy.
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13
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Infrared Nanosecond Laser Texturing of Cu-Doped Bioresorbable Calcium Phosphate Glasses. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12073516] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The surface modification of bioactive glasses significantly impacts their performance for in-vivo biomedical applications. An affordable nanosecond pulsed laser surface-modification technique would provide great flexibility in applications such as cell scaffolding and fouling/anti-fouling engineered surfaces. This study reports on an infrared nanosecond laser modification technique we developed and applied to a Cu-doped bioresorbable calcium phosphate glass. With this technique, clean micro-protrusion features could be produced. By tuning the laser parameters such as the laser scan speed and average power, the width and height of the formed protrusions could be controlled. Finally, optimal laser parameters were defined to obtain complex surface textures without significant damage or thermal-stress-induced cracks. These results could provide effective aid for the affordable, fast, and selective surface texturing of metal-doped bioglasses, opening new possibilities in their application in the biological field.
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14
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No YJ, Nguyen T, Lu Z, Mirkhalaf M, Fei F, Foley M, Zreiqat H. Development of a bioactive and radiopaque bismuth doped baghdadite ceramic for bone tissue engineering. Bone 2021; 153:116147. [PMID: 34389477 DOI: 10.1016/j.bone.2021.116147] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2021] [Revised: 07/27/2021] [Accepted: 08/06/2021] [Indexed: 11/23/2022]
Abstract
Baghdadite (Ca3ZrSi2O9, BAG), is a Zr-doped calcium silicate that has outstanding bioactivity both in vitro and in vivo. Bioceramic scaffolds should be sufficiently radiopaque to be distinguishable in vivo from surrounding bone structures. To enhance the radiopacity of BAG, this study investigated the effect of incorporating bismuth ions into its crystalline structure (BixCa3-xZrSi2O9, x = 0, 0.1, 0.2, 0.5; BAG, Bi0.1-BAG, Bi0.2-BAG, Bi0.5-BAG, respectively). Monophasic baghdadite was retained after bismuth ion incorporation up to x = 0.2 at calcination temperatures of 1350 °C. When pressed and sintered, energy dispersive x-ray spectroscopy showed that BAG and Bi0.1-BAG retained crystalline homogeneity, but Bi0.2-BAG formed zirconium-rich crystalline regions. BAG, Bi0.1-BAG and Bi0.2-BAG exhibited non-degradation after 56 days of immersion in culture medium. Bi0.1-BAG exhibited the lowest change in culture medium pH (+0.0), compared to BAG (+0.7) and Bi0.2-BAG (+0.2) after 56 days of culture media immersion. Bi0.1-BAG exhibited similar strength and modulus to BAG (σ: 200-290 MPa; E: 4-5 GPa), and significantly higher compressive strength and modulus versus Bi0.2-BAG (σ: 150-200 MPa; E: 3.5-4 GPa) across 56 days of aqueous immersion. In vitro studies using primary human bone derived cells (HOBs) demonstrated a significant increase in HOBs proliferation when cultured on Bi0.1-BAG for seven days compared to BAG and Bi0.2-BAG. Importantly, Bi0.1-BAG showed increased radiopacity by ~33%, when compared to BAG, and by ~115% when compared to biphasic calcium phosphate. The properties of Bi0.1-BAG show promise for its use as a bioactive ceramic with sufficient radiopacity for treatment of bone defects.
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Affiliation(s)
- Young Jung No
- Tissue Engineering & Biomaterials Research Unit, School of Biomedical Engineering, The University of Sydney, NSW 2006, Australia; ARC Training Centre for Innovative BioEngineering, The University of Sydney, NSW 2006, Australia.
| | - Tien Nguyen
- Tissue Engineering & Biomaterials Research Unit, School of Biomedical Engineering, The University of Sydney, NSW 2006, Australia; ARC Training Centre for Innovative BioEngineering, The University of Sydney, NSW 2006, Australia
| | - Zufu Lu
- Tissue Engineering & Biomaterials Research Unit, School of Biomedical Engineering, The University of Sydney, NSW 2006, Australia; ARC Training Centre for Innovative BioEngineering, The University of Sydney, NSW 2006, Australia
| | - Mohammad Mirkhalaf
- Tissue Engineering & Biomaterials Research Unit, School of Biomedical Engineering, The University of Sydney, NSW 2006, Australia; ARC Training Centre for Innovative BioEngineering, The University of Sydney, NSW 2006, Australia
| | - Frank Fei
- Tissue Engineering & Biomaterials Research Unit, School of Biomedical Engineering, The University of Sydney, NSW 2006, Australia; ARC Training Centre for Innovative BioEngineering, The University of Sydney, NSW 2006, Australia
| | - Matthew Foley
- Australian Centre for Microscopy & Microanalysis, The University of Sydney, NSW 2006, Australia
| | - Hala Zreiqat
- Tissue Engineering & Biomaterials Research Unit, School of Biomedical Engineering, The University of Sydney, NSW 2006, Australia; ARC Training Centre for Innovative BioEngineering, The University of Sydney, NSW 2006, Australia.
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15
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Keskin-Erdogan Z, Patel KD, Chau DYS, Day RM, Kim HW, Knowles JC. Utilization of GelMA with phosphate glass fibers for glial cell alignment. J Biomed Mater Res A 2021; 109:2212-2224. [PMID: 33960663 DOI: 10.1002/jbm.a.37206] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2020] [Revised: 04/14/2021] [Accepted: 04/16/2021] [Indexed: 12/15/2022]
Abstract
Glial cell alignment in tissue engineered constructs is essential for achieving functional outcomes in neural recovery. While gelatin methacrylate (GelMA) hydrogel offers superior biocompatibility along with permissive structure and tailorable mechanical properties, phosphate glass fibers (PGFs) can provide physical cues for directionality of neural growth. Aligned PGFs were fabricated by a melt quenching and fiber drawing method and utilized with synthesized GelMA hydrogel. The mechanical properties of GelMA and biocompatibility of the GelMA-PGFs composite were investigated in vitro using rat glial cells. GelMA with 86% methacrylation degree were photo-crosslinked using 0.1%wt photo-initiator (PI). Photocrosslinking under UV exposure for 60 s was used to produce hydrogels (GelMA-60). PGFs were introduced into the GelMA before crosslinking. Storage modulus and loss modulus of GelMA-60 was 24.73 ± 2.52 and 1.08 ± 0.23 kN/m2 , respectively. Increased cell alignment was observed in GelMA-PGFs compared with GelMA hydrogel alone. These findings suggest GelMA-PGFs can provide glial cells with physical cues necessary to achieve cell alignment. This approach could further be used to achieve glial cell alignment in bioengineered constructs designed to bridge damaged nerve tissue.
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Affiliation(s)
- Zalike Keskin-Erdogan
- Division of Biomaterials and Tissue Engineering, Eastman Dental Institute, University College London, Royal Free Hospital, London, UK
| | - Kapil D Patel
- UCL Eastman-Korea Dental Medicine Innovation Centre, Dankook University, Cheonan, Republic of Korea.,Department of Nanobiomedical Science & BK21 PLUS NBM Global Research Center for Regenerative Medicine Research Center, Dankook University, Cheonan, Republic of Korea.,Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Cheonan, Republic of Korea
| | - David Y S Chau
- Division of Biomaterials and Tissue Engineering, Eastman Dental Institute, University College London, Royal Free Hospital, London, UK.,UCL Eastman-Korea Dental Medicine Innovation Centre, Dankook University, Cheonan, Republic of Korea.,Department of Nanobiomedical Science & BK21 PLUS NBM Global Research Center for Regenerative Medicine Research Center, Dankook University, Cheonan, Republic of Korea
| | - Richard M Day
- Centre for Precision Healthcare, UCL Division of Medicine, University College London, London, UK
| | - Hae-Won Kim
- UCL Eastman-Korea Dental Medicine Innovation Centre, Dankook University, Cheonan, Republic of Korea.,Department of Nanobiomedical Science & BK21 PLUS NBM Global Research Center for Regenerative Medicine Research Center, Dankook University, Cheonan, Republic of Korea.,Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Cheonan, Republic of Korea.,Department of Biomaterials Science, College of Dentistry, Dankook University, Cheonan, Republic of Korea
| | - Jonathan C Knowles
- Division of Biomaterials and Tissue Engineering, Eastman Dental Institute, University College London, Royal Free Hospital, London, UK.,UCL Eastman-Korea Dental Medicine Innovation Centre, Dankook University, Cheonan, Republic of Korea.,Department of Nanobiomedical Science & BK21 PLUS NBM Global Research Center for Regenerative Medicine Research Center, Dankook University, Cheonan, Republic of Korea
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16
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Avila Salazar DA, Bellstedt P, Miura A, Oi Y, Kasuga T, Brauer DS. Unravelling the dissolution mechanism of polyphosphate glasses by 31P NMR spectroscopy: ligand competition and reactivity of intermediate complexes. Dalton Trans 2021; 50:3966-3978. [PMID: 33646216 DOI: 10.1039/d0dt03381b] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Phosphate glass dissolution can be tailored via compositional and subsequent structural changes, which is of interest for biomedical applications such as therapeutic ion delivery. Here, solid-state 31P nuclear magnetic resonance characterisation of 45P2O5-xCaO - (55 -x)Na2O glasses was correlated with dissolution studies using time-dependent liquid 31P NMR spectroscopy and quantitative chemical analysis. Glasses dissolved congruently in aqueous media, and the first dissolution stage was the hydration of phosphate chains. In deionised water and Tris buffer (pH0 7.4 or 7.9), trimetaphosphate rings and orthophosphates were the predominant species in solution, indicating relatively fast degradation. By contrast, long phosphate chains were identified in EDTA (pH0 10.0). Besides pH differences, coordination of phosphate species by metal cations appears to play a catalytic role in the hydrolysis mechanism via turning phosphorus atoms into suitable electrophiles for the subsequent nucleophilic attack by water. Hydrolysis rates were proportional to phosphate complex stability, with stronger complexes for chains than for rings. A competition between solvent and phosphate species for the metal ion occurred in the order EDTA > Tris > deionised water.
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Affiliation(s)
- Dahiana A Avila Salazar
- Otto Schott Institute of Materials Research, Friedrich Schiller University, Fraunhoferstr. 6, 07743 Jena, Germany.
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17
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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: 83] [Impact Index Per Article: 20.8] [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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18
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Li X, Li G, Zhang K, Pei Z, Zhao S, Li J. Cu-loaded Brushite bone cements with good antibacterial activity and operability. J Biomed Mater Res B Appl Biomater 2020; 109:877-889. [PMID: 33112029 DOI: 10.1002/jbm.b.34752] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Revised: 09/28/2020] [Accepted: 10/17/2020] [Indexed: 01/29/2023]
Abstract
Bone defect-related surgical procedures are traumatic processes carrying potential inflammation and infection risks in the clinic, which are associated with prolonged antibiotic therapy that promotes bacterial antibiotic-resistance. In the present study, Cu-loaded brushite bone cements were designed, and the properties of the bone cements were evaluated. The setting time of the cement was prolonged from 12 to 50 min as the copper content increased. All cements were anti-washout, and the injectable coefficient of the cements was approximately 88%. Scanning electron microscopy results revealed that the crystal grains grew larger and thicker as the copper content in the cement increased, and brushite was determined to be the dominant crystalline phase for all the cements. However, a small amount of newly formed calcium copper phosphate was observed in the cement. Simultaneously, band shifts were observed in the Fourier transform infrared spectroscopy results at a Cu content of 5%. Moreover, the addition of Cu improved the compressive strength of brushite cements, and all cements were degradable. Furthermore, the Cu-loaded brushite bone cements performed well in inhibiting the growth and proliferation of Staphylococcus aureus, Escherichia coli, and Pseudomonas aeruginosa, and the diameter of the inhibition zone increased with increasing copper content. The study revealed that the Cu-loaded brushite bone cements possessed good cellular affinity to mouse bone marrow stem cells when a lower dose of copper was added in vitro. These results support the great potential of injectable antibacterial brushite bone cement specifically for bone tissue defect-related repair and regeneration.
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Affiliation(s)
- Xiaoyu Li
- Central laboratory, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
- College of Medical Technology and Engineering, Henan University of Science and Technology, Luoyang, Henan, China
| | - Guangda Li
- College of Medical Technology and Engineering, Henan University of Science and Technology, Luoyang, Henan, China
| | - Kaili Zhang
- College of Medical Technology and Engineering, Henan University of Science and Technology, Luoyang, Henan, China
| | - Zhengjun Pei
- College of Medical Technology and Engineering, Henan University of Science and Technology, Luoyang, Henan, China
| | - Santuan Zhao
- College of Material Science and Engineering, Henan University of Science and Technology, Luoyang, Henan, China
| | - Jinghua Li
- College of Medical Technology and Engineering, Henan University of Science and Technology, Luoyang, Henan, China
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19
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Foroutan F, Kyffin BA, Abrahams I, Knowles JC, Sogne E, Falqui A, Carta D. Mesoporous Strontium-Doped Phosphate-Based Sol-Gel Glasses for Biomedical Applications. Front Chem 2020; 8:249. [PMID: 32391313 PMCID: PMC7191082 DOI: 10.3389/fchem.2020.00249] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Accepted: 03/16/2020] [Indexed: 12/17/2022] Open
Abstract
Mesoporous phosphate-based glasses have great potential as biomedical materials being able to simultaneously induce tissue regeneration and controlled release of therapeutic molecules. In the present study, a series of mesoporous phosphate-based glasses in the P2O5-CaO-Na2O system, doped with 1, 3, and 5 mol% of Sr2+, were prepared using the sol-gel method combined with supramolecular templating. A sample without strontium addition was prepared for comparison. The non-ionic triblock copolymer EO20PO70EO20 (P123) was used as a templating agent. Scanning electron microscopy (SEM) images revealed that all synthesized glasses have an extended porous structure. This was confirmed by N2 adsorption-desorption analysis at 77 K that shows a porosity typical of mesoporous materials. 31P magic angle spinning nuclear magnetic resonance (31P MAS-NMR) and Fourier transform infrared (FTIR) spectroscopies have shown that the glasses are mainly formed by Q1 and Q2 phosphate groups. Degradation of the glasses in deionized water assessed over a 7-day period shows that phosphate, Ca2+, Na+, and Sr2+ ions can be released in a controlled manner over time. In particular, a direct correlation between strontium content and degradation rate was observed. This study shows that Sr-doped mesoporous phosphate-based glasses have great potential in bone tissue regeneration as materials for controlled delivery of therapeutic ions.
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Affiliation(s)
- Farzad Foroutan
- Department of Chemistry, University of Surrey, Guildford, United Kingdom
| | | | - Isaac Abrahams
- School of Biological and Chemical Sciences, Materials Research Institute, Queen Mary University of London, London, United Kingdom
| | - Jonathan C. Knowles
- Division of Biomaterials and Tissue Engineering, University College London, Eastman Dental Institute, London, United Kingdom
- The Discoveries Centre for Regenerative and Precision Medicine, London, United Kingdom
- Department of Nanobiomedical Science & BK21 PLUS NBM Global Research Centre for Regenerative Medicine, Dankook University, Cheonan-si, South Korea
- UCL Eastman-Korea Dental Medicine Innovation Centre, Dankook University, Cheonan-si, South Korea
| | - Elisa Sogne
- NABLA Lab, Biological and Environmental Sciences and Engineering (BESE) Division, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
| | - Andrea Falqui
- NABLA Lab, Biological and Environmental Sciences and Engineering (BESE) Division, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
| | - Daniela Carta
- Department of Chemistry, University of Surrey, Guildford, United Kingdom
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