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Chen Z, Zhou X, Mo M, Hu X, Liu J, Chen L. Systematic review of the osteogenic effect of rare earth nanomaterials and the underlying mechanisms. J Nanobiotechnology 2024; 22:185. [PMID: 38627717 PMCID: PMC11020458 DOI: 10.1186/s12951-024-02442-3] [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: 02/02/2024] [Accepted: 03/27/2024] [Indexed: 04/19/2024] Open
Abstract
Rare earth nanomaterials (RE NMs), which are based on rare earth elements, have emerged as remarkable biomaterials for use in bone regeneration. The effects of RE NMs on osteogenesis, such as promoting the osteogenic differentiation of mesenchymal stem cells, have been investigated. However, the contributions of the properties of RE NMs to bone regeneration and their interactions with various cell types during osteogenesis have not been reviewed. Here, we review the crucial roles of the physicochemical and biological properties of RE NMs and focus on their osteogenic mechanisms. RE NMs directly promote the proliferation, adhesion, migration, and osteogenic differentiation of mesenchymal stem cells. They also increase collagen secretion and mineralization to accelerate osteogenesis. Furthermore, RE NMs inhibit osteoclast formation and regulate the immune environment by modulating macrophages and promote angiogenesis by inducing hypoxia in endothelial cells. These effects create a microenvironment that is conducive to bone formation. This review will help researchers overcome current limitations to take full advantage of the osteogenic benefits of RE NMs and will suggest a potential approach for further osteogenesis research.
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Affiliation(s)
- Ziwei Chen
- Department of Orthodontics, School and Hospital of Stomatology, Guangdong Engineering Research Center of Oral Restoration and Reconstruction & Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangzhou Medical University, Guangzhou, China
| | - Xiaohe Zhou
- Department of Orthodontics, School and Hospital of Stomatology, Guangdong Engineering Research Center of Oral Restoration and Reconstruction & Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangzhou Medical University, Guangzhou, China
| | - Minhua Mo
- Department of Orthodontics, School and Hospital of Stomatology, Guangdong Engineering Research Center of Oral Restoration and Reconstruction & Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangzhou Medical University, Guangzhou, China
| | - Xiaowen Hu
- Department of Orthodontics, School and Hospital of Stomatology, Guangdong Engineering Research Center of Oral Restoration and Reconstruction & Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangzhou Medical University, Guangzhou, China
| | - Jia Liu
- Stomatological Hospital, Southern Medical University, Guangzhou, China.
| | - Liangjiao Chen
- Department of Orthodontics, School and Hospital of Stomatology, Guangdong Engineering Research Center of Oral Restoration and Reconstruction & Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangzhou Medical University, Guangzhou, China.
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2
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Borges R, Pelosine AM, de Souza ACS, Machado J, Justo GZ, Gamarra LF, Marchi J. Bioactive Glasses as Carriers of Cancer-Targeted Drugs: Challenges and Opportunities in Bone Cancer Treatment. MATERIALS (BASEL, SWITZERLAND) 2022; 15:ma15249082. [PMID: 36556893 PMCID: PMC9781635 DOI: 10.3390/ma15249082] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 12/06/2022] [Accepted: 12/14/2022] [Indexed: 05/20/2023]
Abstract
The treatment of bone cancer involves tumor resection followed by bone reconstruction of the defect caused by the tumor using biomaterials. Additionally, post-surgery protocols cover chemotherapy, radiotherapy, or drug administration, which are employed as adjuvant treatments to prevent tumor recurrence. In this work, we reviewed new strategies for bone cancer treatment based on bioactive glasses as carriers of cancer-targeted and other drugs that are intended for bone regeneration in conjunction with adjuvant treatments. Drugs used in combination with bioactive glasses can be classified into cancer-target, osteoclast-target, and new therapies (such as gene delivery and bioinorganic). Microparticulated, nanoparticulated, or mesoporous bioactive glasses have been used as drug-delivery systems. Additionally, surface modification through functionalization or the production of composites based on polymers and hydrogels has been employed to improve drug-release kinetics. Overall, although different drugs and drug delivery systems have been developed, there is still room for new studies involving kinase inhibitors or antibody-conjugated drugs, as these drugs have been poorly explored in combination with bioactive glasses.
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Affiliation(s)
- Roger Borges
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Santo André 09210-580, Brazil
| | - Agatha Maria Pelosine
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Santo André 09210-580, Brazil
| | | | - Joel Machado
- Departamento de Ciências Biológicas, Universidade Federal de São Paulo, Diadema 05508-070, Brazil
| | - Giselle Zenker Justo
- Departamento de Bioquímica, Universidade Federal de São Paulo, São Paulo 05508-070, Brazil
| | | | - Juliana Marchi
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Santo André 09210-580, Brazil
- Correspondence: ; Tel.: +55-11-4996-8365
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3
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Kee CC, Ng K, Ang BC, Metselaar HSC. Synthesis, characterization and in-vitro biocompatibility of electrophoretic deposited europium-doped calcium silicate on titanium substrate. Ann Ital Chir 2022. [DOI: 10.1016/j.jeurceramsoc.2022.10.048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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4
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Pantulap U, Arango-Ospina M, Boccaccini AR. Bioactive glasses incorporating less-common ions to improve biological and physical properties. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2021; 33:3. [PMID: 34940923 PMCID: PMC8702415 DOI: 10.1007/s10856-021-06626-3] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2021] [Accepted: 11/07/2021] [Indexed: 05/29/2023]
Abstract
Bioactive glasses (BGs) have been a focus of research for over five decades for several biomedical applications. Although their use in bone substitution and bone tissue regeneration has gained important attention, recent developments have also seen the expansion of BG applications to the field of soft tissue engineering. Hard and soft tissue repair therapies can benefit from the biological activity of metallic ions released from BGs. These metallic ions are incorporated in the BG network not only for their biological therapeutic effects but also in many cases for influencing the structure and processability of the glass and to impart extra functional properties. The "classical" elements in silicate BG compositions are silicon (Si), phosphorous (P), calcium (Ca), sodium (Na), and potassium (K). In addition, other well-recognized biologically active ions have been incorporated in BGs to provide osteogenic, angiogenic, anti-inflammatory, and antibacterial effects such as zinc (Zn), magnesium (Mg), silver (Ag), strontium (Sr), gallium (Ga), fluorine (F), iron (Fe), cobalt (Co), boron (B), lithium (Li), titanium (Ti), and copper (Cu). More recently, rare earth and other elements considered less common or, some of them, even "exotic" for biomedical applications, have found room as doping elements in BGs to enhance their biological and physical properties. For example, barium (Ba), bismuth (Bi), chlorine (Cl), chromium (Cr), dysprosium (Dy), europium (Eu), gadolinium (Gd), ytterbium (Yb), thulium (Tm), germanium (Ge), gold (Au), holmium (Ho), iodine (I), lanthanum (La), manganese (Mn), molybdenum (Mo), nickel (Ni), niobium (Nb), nitrogen (N), palladium (Pd), rubidium (Rb), samarium (Sm), selenium (Se), tantalum (Ta), tellurium (Te), terbium (Tb), erbium (Er), tin (Sn), tungsten (W), vanadium (V), yttrium (Y) as well as zirconium (Zr) have been included in BGs. These ions have been found to be particularly interesting for enhancing the biological performance of doped BGs in novel compositions for tissue repair (both hard and soft tissue) and for providing, in some cases, extra functionalities to the BG, for example fluorescence, luminescence, radiation shielding, anti-inflammatory, and antibacterial properties. This review summarizes the influence of incorporating such less-common elements in BGs with focus on tissue engineering applications, usually exploiting the bioactivity of the BG in combination with other functional properties imparted by the presence of the added elements.
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Affiliation(s)
- Usanee Pantulap
- Department of Materials Science and Engineering, Institute of Biomaterials, University of Erlangen-Nuremberg, 91058, Erlangen, Germany
| | - Marcela Arango-Ospina
- Department of Materials Science and Engineering, Institute of Biomaterials, University of Erlangen-Nuremberg, 91058, Erlangen, Germany
| | - Aldo R Boccaccini
- Department of Materials Science and Engineering, Institute of Biomaterials, University of Erlangen-Nuremberg, 91058, Erlangen, Germany.
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Biocompatible Eu doped mesoporous calcium silicate nanospheres for pH-responsive drug release. INORG CHEM COMMUN 2021. [DOI: 10.1016/j.inoche.2021.108872] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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Huang C, Yu M, Li H, Wan X, Ding Z, Zeng W, Zhou Z. Research Progress of Bioactive Glass and Its Application in Orthopedics. ADVANCED MATERIALS INTERFACES 2021. [DOI: 10.1002/admi.202100606] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Chao Huang
- Department of Orthopaedics West China Hospital of Sichuan University No. 37 Guoxue Alley, Wuhou District Chengdu 610041 P. R. China
| | - Min Yu
- Department of Anesthesiology North‐Kuanren General Hospital No. 69 Xingguang Avenue, Yubei District Chongqing 401121 P. R. China
| | - Hao Li
- Department of Orthopaedics West China Hospital of Sichuan University No. 37 Guoxue Alley, Wuhou District Chengdu 610041 P. R. China
| | - Xufeng Wan
- Department of Orthopaedics West China Hospital of Sichuan University No. 37 Guoxue Alley, Wuhou District Chengdu 610041 P. R. China
| | - Zichuan Ding
- Department of Orthopaedics West China Hospital of Sichuan University No. 37 Guoxue Alley, Wuhou District Chengdu 610041 P. R. China
| | - Weinan Zeng
- Department of Orthopaedics West China Hospital of Sichuan University No. 37 Guoxue Alley, Wuhou District Chengdu 610041 P. R. China
| | - Zongke Zhou
- Department of Orthopaedics West China Hospital of Sichuan University No. 37 Guoxue Alley, Wuhou District Chengdu 610041 P. R. China
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Wu K, Wu X, Guo J, Jiao Y, Zhou C. Facile Polyphenol-Europium Assembly Enabled Functional Poly(l-Lactic Acid) Nanofiber Mats with Enhanced Antioxidation and Angiogenesis for Accelerated Wound Healing. Adv Healthc Mater 2021; 10:e2100793. [PMID: 34346184 DOI: 10.1002/adhm.202100793] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 06/15/2021] [Indexed: 12/11/2022]
Abstract
Burns, trauma, surgery and chronic diabetic ulcers are the most common reasons causing skin wounds in clinic. Thus, developing a functional wound dressing has been an imperative issue. Herein, functional wound dressing (poly(l-lactic acid) PLLA-((tanic acid (TA)/europium (Eu))n ) is fabricated through a facile polyphenol-europium ion assembly to ameliorate wound microenvironment via scavenging excessive reactive oxygen species (ROS) and promoting angiogenesis. The physicochemical characterization indicates that the multicycle assembled TA/Eu is uniformly deposited on PLLA-(TA/Eu)n nanofiber mats surface. In vitro 2,2-diphenyl-1-picrylhydrazyl (DPPH) antioxidant tests display good antioxidant ability by scavenging more than 75% ROS, and significantly increasing the antioxidant enzyme levels in vivo. Cytocompatibility experiments illustrate that PLLA-(TA/Eu)n nanofiber mats can promote the adhesion and proliferation of human umbilical vein endothelial cells (HUVECs) and L929 cells. Meanwhile, real-time quantitative polymerase chain reaction (PCR) (RT-qPCR) and western blot assays illustrate that it can stimulate proangiogenesis by elevating the expression of angiogenesis-related genes and proteins. In vivo Sprague-Dawley (SD) rats experiments indicate that PLLA-(TA/Eu)n nanofiber mats can significantly promote wound healing by improving both angiogenesis and antioxidant activity. Taken together, the functional PLLA-(TA/Eu)n nanofiber mats can offer significant promise as wound dressing for accelerated wound healing.
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Affiliation(s)
- Keke Wu
- Department of Materials Science and Engineering Jinan University Guangzhou 510632 China
- Department of Histology and Embryology School of Basic Medical Sciences Guangdong Provincial Key Laboratory of Bone and Joint Degeneration Diseases The Third Affiliated Hospital of Southern Medical University Southern Medical University Guangzhou 510515 China
| | - Xiaoxian Wu
- Instrumental Analysis and Research Center South China Agricultural University Guangzhou 510642 China
| | - Jinshan Guo
- Department of Histology and Embryology School of Basic Medical Sciences Guangdong Provincial Key Laboratory of Bone and Joint Degeneration Diseases The Third Affiliated Hospital of Southern Medical University Southern Medical University Guangzhou 510515 China
| | - Yanpeng Jiao
- Department of Materials Science and Engineering Jinan University Guangzhou 510632 China
| | - Changren Zhou
- Department of Materials Science and Engineering Jinan University Guangzhou 510632 China
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Amini Z, Rudsary SS, Shahraeini SS, Dizaji BF, Goleij P, Bakhtiari A, Irani M, Sharifianjazi F. Magnetic bioactive glasses/Cisplatin loaded-chitosan (CS)-grafted- poly (ε-caprolactone) nanofibers against bone cancer treatment. Carbohydr Polym 2021; 258:117680. [DOI: 10.1016/j.carbpol.2021.117680] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 10/31/2020] [Accepted: 01/17/2021] [Indexed: 12/16/2022]
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Zambanini T, Borges R, de Souza ACS, Justo GZ, Machado J, de Araujo DR, Marchi J. Holmium-Containing Bioactive Glasses Dispersed in Poloxamer 407 Hydrogel as a Theragenerative Composite for Bone Cancer Treatment. MATERIALS 2021; 14:ma14061459. [PMID: 33802678 PMCID: PMC8002559 DOI: 10.3390/ma14061459] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Revised: 02/26/2021] [Accepted: 03/05/2021] [Indexed: 12/12/2022]
Abstract
Holmium-containing bioactive glasses can be applied in bone cancer treatment because the holmium content can be neutron activated, having suitable properties for brachytherapy applications, while the bioactive glass matrix can regenerate the bone alterations induced by the tumor. To facilitate the application of these glasses in clinical practice, we proposed a composite based on Poloxamer 407 thermoresponsive hydrogel, with suitable properties for applications as injectable systems. Therefore, in this work, we evaluated the influence of holmium-containing glass particles on the properties of Poloxamer 407 hydrogel (20 w/w.%), including self-assembly ability and biological properties. 58S bioactive glasses (58SiO2-33CaO-9P2O5) containing different Ho2O3 amounts (1.25, 2.5, 3.75, and 5 wt.%) were incorporated into the hydrogel. The formulations were characterized by scanning electron microscopy, differential scanning calorimetry, rheological tests, and [3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide] MTT cell viability against pre-osteoblastic and osteosarcoma cells. The results evidenced that neither the glass particles dispersed in the hydrogel nor the holmium content in the glasses significantly influenced the hydrogel self-assembly ability (Tmic ~13.8 °C and Tgel ~20 °C). Although, the glass particles considerably diminished the hydrogel viscosity in one order of magnitude at body temperature (37 °C). The cytotoxicity results evidenced that the formulations selectively favored pre-osteoblastic cell proliferation and osteosarcoma cell death. In conclusion, the formulation containing glass with the highest fraction of holmium content (5 wt.%) had the best biological results outcomes aiming its application as theragenerative materials for bone cancer treatment.
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Affiliation(s)
- Telma Zambanini
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Santo André 09210-580, SP, Brazil; (T.Z.); (R.B.); (A.C.S.d.S.); (D.R.d.A.)
| | - Roger Borges
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Santo André 09210-580, SP, Brazil; (T.Z.); (R.B.); (A.C.S.d.S.); (D.R.d.A.)
| | - Ana C. S. de Souza
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Santo André 09210-580, SP, Brazil; (T.Z.); (R.B.); (A.C.S.d.S.); (D.R.d.A.)
| | - Giselle Z. Justo
- Departamento de Bioquímica, Universidade Federal de São Paulo, São Paulo 04044-020, SP, Brazil;
| | - Joel Machado
- Departamento de Ciências Biológicas, Universidade Federal de São Paulo, Diadema 04039-032, SP, Brazil;
| | - Daniele R. de Araujo
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Santo André 09210-580, SP, Brazil; (T.Z.); (R.B.); (A.C.S.d.S.); (D.R.d.A.)
| | - Juliana Marchi
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Santo André 09210-580, SP, Brazil; (T.Z.); (R.B.); (A.C.S.d.S.); (D.R.d.A.)
- Correspondence: ; Tel.: +55-11-3356-7488
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Dejob L, Toury B, Tadier S, Grémillard L, Gaillard C, Salles V. Electrospinning of in situ synthesized silica-based and calcium phosphate bioceramics for applications in bone tissue engineering: A review. Acta Biomater 2021; 123:123-153. [PMID: 33359868 DOI: 10.1016/j.actbio.2020.12.032] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 12/10/2020] [Accepted: 12/15/2020] [Indexed: 02/07/2023]
Abstract
The field of bone tissue engineering (BTE) focuses on the repair of bone defects that are too large to be restored by the natural healing process. To that purpose, synthetic materials mimicking the natural bone extracellular matrix (ECM) are widely studied and many combinations of compositions and architectures are possible. In particular, the electrospinning process can reproduce the fibrillar structure of bone ECM by stretching a viscoelastic solution under an electrical field. With this method, nano/micrometer-sized fibres can be produced, with an adjustable chemical composition. Therefore, by shaping bioactive ceramics such as silica, bioactive glasses and calcium phosphates through electrospinning, promising properties for their use in BTE can be obtained. This review focuses on the in situ synthesis and simultaneous electrospinning of bioceramic-based fibres while the reasons for using each material are correlated with its bioactivity. Theoretical and practical considerations for the synthesis and electrospinning of these materials are developed. Finally, investigations into the in vitro and in vivo bioactivity of different systems using such inorganic fibres are exposed.
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Affiliation(s)
- Léa Dejob
- Laboratoire des Multimatériaux et Interfaces, UMR CNRS 5615, Univ Lyon, Université Claude Bernard Lyon 1, Villeurbanne F-69622, France; Univ Lyon, INSA-Lyon, CNRS, MATEIS UMR 5510, Villeurbanne F-69621, France
| | - Bérangère Toury
- Laboratoire des Multimatériaux et Interfaces, UMR CNRS 5615, Univ Lyon, Université Claude Bernard Lyon 1, Villeurbanne F-69622, France
| | - Solène Tadier
- Univ Lyon, INSA-Lyon, CNRS, MATEIS UMR 5510, Villeurbanne F-69621, France
| | - Laurent Grémillard
- Univ Lyon, INSA-Lyon, CNRS, MATEIS UMR 5510, Villeurbanne F-69621, France
| | - Claire Gaillard
- Univ Lyon, INSA-Lyon, CNRS, MATEIS UMR 5510, Villeurbanne F-69621, France
| | - Vincent Salles
- Laboratoire des Multimatériaux et Interfaces, UMR CNRS 5615, Univ Lyon, Université Claude Bernard Lyon 1, Villeurbanne F-69622, France.
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Luminescence Sensing Method for Degradation Analysis of Bioactive Glass Fibers. SENSORS 2021; 21:s21062054. [PMID: 33803968 PMCID: PMC7998135 DOI: 10.3390/s21062054] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/13/2021] [Revised: 03/07/2021] [Accepted: 03/11/2021] [Indexed: 11/16/2022]
Abstract
The effects of Sm3+ content on the optical properties and bioactivity of 13-93 bioactive glass were presented. Sm3+ doped glass fibers drawn from bioactive glass were analyzed in simulated body fluid (SBF) for the determination of ion release. Optical analysis of the Sm3+ ions in bioactive glass fibers was used for degradation monitoring. While the fibers were immersed in SBF solution, changes in their luminescence spectra under 405 nm laser excitation were measured continuously for 48 h. The morphology of the fibers after the immersion process was determined by SEM/EDS. It was shown that the proposed approach to the analysis of changes in Sm3+ ion luminescence is a sensitive method for the monitoring of degradation processes and the formation of hydroxycarbonate-apatite (HCA) layers on glass fiber surfaces. SEM/EDS measurements showed a significant deterioration on the surface of the fibers and the formation of HCA on 13-93_02Sm bioactive glass. The optical analysis of the time constant indicated that bioactive glass fibers doped with 2 %mol Sm3+ degrade at a rate almost five times slower than 13-93_02Sm.
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Qin X, Cao R, Zheng J, Shi G, Ji L, Zhu A, Yao H. A new strategy for synthesizing silver doped mesoporous bioactive glass fibers and their bioactivity, antibacterial activity and drug loading performance. RSC Adv 2020; 10:44835-44840. [PMID: 35516281 PMCID: PMC9058609 DOI: 10.1039/d0ra08656h] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2020] [Accepted: 11/25/2020] [Indexed: 11/21/2022] Open
Abstract
A new strategy for preparing mesoporous metal-doped bioactive glass fibers (MBGFs) was designed, which included electrospinning and sulfonating mesoporous PS fibers, precipitating metal ions and bioactive glass sol-gel precursor into the mesoporous polystyrene (PS) fibers and calcinations. Silver-doped mesoporous BGFs (Ag-MBGFs) with a uniform diameter of 1-2 μm and a specific surface area of 40.22 m2 g-1 were prepared as an example and characterized by SEM, XRD, TG, ICP and FTIR. These Ag-MBGFs showed excellent bioactivity, antibacterial properties and drug loading and release performance due to their special mesoporous and fibrous structure. The concentration of Staphylococcus aureus decreased from 1 × 108 colony-forming units per mL (CFU mL-1) to 2.5 × 106 CFU mL-1 in 2 h and then to 2 × 102 CFU mL-1 in 12 h when the concentration of the Ag-MBGFs reached 16 mg mL-1. BGFs of different compositions and functions could be prepared by the same strategy in a mesoporous PS fiber template, which could enrich materials for constructing orthopedic implants.
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Affiliation(s)
- Xiang Qin
- College of Chemistry and Chemical Engineering, Yangzhou University Yangzhou 225002 China
| | - Rong Cao
- College of Chemistry and Chemical Engineering, Yangzhou University Yangzhou 225002 China
| | - Jingjing Zheng
- College of Chemistry and Chemical Engineering, Yangzhou University Yangzhou 225002 China
| | - Guojun Shi
- College of Chemistry and Chemical Engineering, Yangzhou University Yangzhou 225002 China
| | - Lijun Ji
- College of Chemistry and Chemical Engineering, Yangzhou University Yangzhou 225002 China
| | - Aiping Zhu
- College of Chemistry and Chemical Engineering, Yangzhou University Yangzhou 225002 China
| | - Hang Yao
- College of Chemistry and Chemical Engineering, Yangzhou University Yangzhou 225002 China
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Hu M, Fang J, Zhang Y, Wang X, Zhong W, Zhou Z. Design and evaluation a kind of functional biomaterial for bone tissue engineering: Selenium/mesoporous bioactive glass nanospheres. J Colloid Interface Sci 2020; 579:654-666. [PMID: 32652321 DOI: 10.1016/j.jcis.2020.06.122] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2020] [Revised: 06/28/2020] [Accepted: 06/29/2020] [Indexed: 01/24/2023]
Abstract
Conventional treatments of bone tumor involve removal followed by radiation and chemotherapeutic drugs that may have limitations and cause secondary damage. The development of functional filling biomaterial has led to a new strategy for tumor therapy. In this study, a novel therapeutic ion selenium doped mesoporous bioactive glasses (Se/MBG) nanospheres were successfully synthesized by a facile sol-gel technique using cetyl trimethyl ammonium bromide (CTAB) as the template, which had uniform spherical morphology (≈ 400 nm), high surface area (>400 m2/g) and mesopore volume (≈0.30 cm3/g). Results showed that hydroxyapatite formation ability and controllable doxorubicin (DOX) release and distinct degradation of Se/MBG nanospheres depended on the dose of Se4+. In vitro cell cultures showed that both Se/MBG and DOX-Se/MBG nanospheres had the culture time and dose dependent cytotoxicity to MG63 osteosarcoma cells. But DOX-Se/MBG nanospheres reduced the acute cytotoxicity to MG63 because of the co-operative effect of Se and DOX. Meanwhile, Se/MBG nanospheres were found to have selective cytotoxicity to cancer cells (MG63) and normal cells (MC3T3-E1), indicating that the prepared Se/MBG nanospheres had cell recognition function. These all note that the synthesized Se/MBG nanospheres can be used as a filling biomaterial for the bone tissue engineering.
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Affiliation(s)
- Meng Hu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, People's Republic of China
| | - Jie Fang
- College of Pharmaceutical Sciences, Soochow University, Suzhou 215123, People's Republic of China
| | - Ying Zhang
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, People's Republic of China.
| | - Xiang Wang
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, People's Republic of China
| | - Wenxing Zhong
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, People's Republic of China
| | - Zhufa Zhou
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, People's Republic of China.
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Gupta N, Goel H, Santhiya D, Srivastava CM, Mishra S, Rai P. Aqueous‐Phased Electrospun Bioactive Glass Mineralized Gelatin‐Pectin Hybrid Composite Fiber Matrix For 7‐Dehydrocholesterol Delivery. ChemistrySelect 2020. [DOI: 10.1002/slct.202000264] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Nidhi Gupta
- Department of Applied Chemistry and Polymer TechnologyDelhi Technological University Bawana Road Delhi 110 042 India
| | - Himansh Goel
- Department of Applied Chemistry and Polymer TechnologyDelhi Technological University Bawana Road Delhi 110 042 India
| | - Deenan Santhiya
- Department of Applied Chemistry and Polymer TechnologyDelhi Technological University Bawana Road Delhi 110 042 India
| | - Chandra Mohan Srivastava
- Centre for Polymer TechnologyAmity School of Applied SciencesAmity University Haryana Gurgaon-122 413 India
| | - Sarita Mishra
- CSIR - Institute of Genomics and Integrative Biology Mathura Road New Delhi India
- Academy of Scientific and Innovative Research (AcSIR), Anusandhan Bhawan 2 Rafi Marg New Delhi 110001 India
| | - Pragya Rai
- Department of Applied Chemistry and Polymer TechnologyDelhi Technological University Bawana Road Delhi 110 042 India
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Nagrath M, Alhalawani A, Rahimnejad Yazdi A, Towler MR. Bioactive glass fiber fabrication via a combination of sol-gel process with electro-spinning technique. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 101:521-538. [PMID: 31029347 DOI: 10.1016/j.msec.2019.04.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Revised: 03/28/2019] [Accepted: 04/01/2019] [Indexed: 01/12/2023]
Affiliation(s)
- Malvika Nagrath
- Department of Biomedical Engineering, Faculty of Engineering and Architectural Science, Ryerson University, Toronto M5B 2K3, ON, Canada; Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto M5B 1W8, ON, Canada
| | - Adel Alhalawani
- Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto M5B 1W8, ON, Canada; Department of Mechanical and Industrial Engineering, Faculty of Engineering and Architectural Science, Ryerson University, Toronto M5B 2K3, ON, Canada
| | - Alireza Rahimnejad Yazdi
- Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto M5B 1W8, ON, Canada; Department of Mechanical and Industrial Engineering, Faculty of Engineering and Architectural Science, Ryerson University, Toronto M5B 2K3, ON, Canada
| | - Mark R Towler
- Department of Biomedical Engineering, Faculty of Engineering and Architectural Science, Ryerson University, Toronto M5B 2K3, ON, Canada; Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto M5B 1W8, ON, Canada; Department of Mechanical and Industrial Engineering, Faculty of Engineering and Architectural Science, Ryerson University, Toronto M5B 2K3, ON, Canada.
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Zhang Y, Hu M, Wang X, Zhou Z, Liu Y. Design and Evaluation of Europium Containing Mesoporous Bioactive Glass Nanospheres: Doxorubicin Release Kinetics and Inhibitory Effect on Osteosarcoma MG 63 Cells. NANOMATERIALS 2018; 8:nano8110961. [PMID: 30469391 PMCID: PMC6265684 DOI: 10.3390/nano8110961] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/20/2018] [Revised: 11/18/2018] [Accepted: 11/19/2018] [Indexed: 12/25/2022]
Abstract
Functional ions and drug factors play a vital role in stimulating bone tissue regeneration as we understand it. In this work, europium-containing mesoporous bioactive glass nanospheres (Eu/MBGs), composed of 60% SiO₂-(36⁻x)%CaO-x%Eu₂O₃-4%P₂O₅ (x = 0, 0.5, 1, 2 mol%), were prepared by a facile sol-gel process. The results indicate that Eu ions play an important role to influence the microstructure of MBGs, in which a suitable concentration of Eu (1 mol%) increases their surface area (502 m²/g) as well as their pore volume (0.34 cm³/g). Proper doping of Eu ions in MBGs can observably induce apatite mineralization and improve the doxorubicin (DOX) release behavior. Furthermore, DOX-loaded Eu/MBGs could maintain a long-term inhibitory effect on the viability of osteosarcoma MG 63 cells. This work has demonstrated that it is possible to develop functional Eu/MBGs by combining excellent apatite-mineralization ability, controllable drug (DOX) release and antitumor functions for the therapy of bone tissue regeneration.
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Affiliation(s)
- Ying Zhang
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215023, China.
| | - Meng Hu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215023, China.
| | - Xiang Wang
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215023, China.
| | - Zhufa Zhou
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215023, China.
| | - Yu Liu
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215023, China.
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Zhai Y, Bai X, Zhu J, Sun X, Pan G, Dong B, Xu L, Xu W, Zhang S, Song H. Luminescence carbon dot-based nanofibers for a water-insoluble drug release system and their monitoring of drug release. J Mater Chem B 2018; 6:3579-3585. [DOI: 10.1039/c8tb00117k] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Drug release systems with fluorescence detection have emerged as a potential application for the biological area of diagnosis and therapy.
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Wang X, Zhang Y, Lin C, Zhong W. Sol-gel derived terbium-containing mesoporous bioactive glasses nanospheres: In vitro hydroxyapatite formation and drug delivery. Colloids Surf B Biointerfaces 2017; 160:406-415. [PMID: 28965080 DOI: 10.1016/j.colsurfb.2017.09.051] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Revised: 09/07/2017] [Accepted: 09/22/2017] [Indexed: 11/20/2022]
Abstract
Terbium (Tb) doped mesoporous bioactive glasses (Tb/MBG) nanospheres were successfully synthesized by a facile sol-gel method using cetyl trimethyl ammonium bromide (CTAB) as the template. Results indicated that Tb/MBG had spherical morphology (100-200nm), higher specific surface area (250-350m2/g) and narrow mesopore size distribution (2-3nm). In order to investigate the effects of Tb on the in vitro bioactivity, prepared Tb/MBG nanospheres were soaking in simulated body fluid (SBF) for 3 days, and results indicated incorporation Tb ions in the MBG nanospheres could improve the hydroxyapatite formation ability. In addition, Tb/MBG nanospheres showed controlled release property of anti-cancer drugs (DOX) and distinct degradation in PBS with different pH values. Their release mechanism can be explained by Fickian diffusion according the Higuchi model, and the delivery of DOX from Tb/MBG nanospheres can be dominated by changing the doping concentration of Tb and the values of pH. In addition, the cytotoxicity of Tb/MBG nanospheres was assessed using a cell counting kit-8 (CCK-8), and results showed that the synthesized Tb/MBG nanospheres at low concentration had no significant cytotoxicity in MC3T3 cells. These all note that this material is a promising candidate for the therapy of bone tissue regeneration.
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Affiliation(s)
- Xiang Wang
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, People's Republic of China
| | - Ying Zhang
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, People's Republic of China.
| | - Chuan Lin
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, People's Republic of China
| | - Wenxing Zhong
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, People's Republic of China
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Shoaib M, Saeed A, Akhtar J, Rahman MSU, Ullah A, Jurkschat K, Naseer MM. Potassium-doped mesoporous bioactive glass: Synthesis, characterization and evaluation of biomedical properties. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 75:836-844. [DOI: 10.1016/j.msec.2017.02.090] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Revised: 02/16/2017] [Accepted: 02/17/2017] [Indexed: 01/16/2023]
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Zhang Y, Wang X, Su Y, Chen D, Zhong W. A doxorubicin delivery system: Samarium/mesoporous bioactive glass/alginate composite microspheres. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 67:205-213. [DOI: 10.1016/j.msec.2016.05.019] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2016] [Revised: 05/04/2016] [Accepted: 05/05/2016] [Indexed: 11/27/2022]
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Abstract
Nanofibers are extremely advantageous for drug delivery because of their high surface area-to-volume ratios, high porosities and 3D open porous structures. Local delivery of analgesics by using nanofibers allows site-specificity and requires a lower overall drug dosage with lower adverse side effects. Different analgesics have been loaded onto various nanofibers, including those that are natural, synthetic and copolymer, for various medical applications. Analgesics can also be singly or coaxially loaded onto nanofibers to enhance clinical applications. In particular, analgesic-eluting nanofibers provide additional benefits to preventing wound adhesion and scar formation. This paper reviews current research and breakthrough discoveries on the innovative application of analgesic-loaded nanofibers that will alter the clinical therapy of pain.
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Affiliation(s)
- Yuan-Yun Tseng
- Department of Neurosurgery, Shuang Ho Hospital, Taipei Medical University, Taipei, Taiwan
| | - Shih-Jung Liu
- Biomaterials Lab, Department of Mechanical Engineering, Chang Gung University, Tao-Yuan, Taiwan
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Zhang Q, Li X, Ren Z, Han G, Mao C. Synthesis of CaTiO 3 Nanofibers with Controllable Drug-Release Kinetics. Eur J Inorg Chem 2015; 2015:4532-4538. [PMID: 27818612 PMCID: PMC5091301 DOI: 10.1002/ejic.201500737] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2015] [Indexed: 11/06/2022]
Abstract
Calcium titanate (CaTiO3) nanofibers with controlled microstructure were fabricated by a combination of sol-gel and electrospinning approaches. The fiber morphology has been found to rely significantly on the precursor composition. Altering the volume ratio of ethanol to acetic acid from 3.5 to 1.25 enables the morphology of the CaTiO3 nanofibers to be transformed from fibers with a circular cross section to curved ribbon-like structures. Ibuprofen (IBU) was used as a model drug to investigate the drug-loading capacity and drug-release profile of the nanofibers. It was found that the BET surface area and the pore volume decrease markedly with the utilization of F127 surfactant. The nanofibers synthesized without F127 surfactant present the highest drug-loading capacity and the most sustained release kinetics. This study suggests that calcium titanate nanofibers can offer a promising platform for localized drug delivery.
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Affiliation(s)
- Qiuhong Zhang
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, P. R. China
| | - Xiang Li
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, P. R. China
| | - Zhaohui Ren
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, P. R. China
| | - Gaorong Han
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, P. R. China
| | - Chuanbin Mao
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, P. R. China
- Department of Chemistry & Biochemistry, Stephenson Life Sciences Research Center, University of Oklahoma, 101 Stephenson Parkway, Norman, Oklahoma 73019-5300, USA
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Ding Y, Roether JA, Boccaccini AR, Schubert DW. Fabrication of electrospun poly (3-hydroxybutyrate)/poly (ε-caprolactone)/silica hybrid fibermats with and without calcium addition. Eur Polym J 2014. [DOI: 10.1016/j.eurpolymj.2014.03.020] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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Wu C, Chang J. Multifunctional mesoporous bioactive glasses for effective delivery of therapeutic ions and drug/growth factors. J Control Release 2014; 193:282-95. [PMID: 24780264 DOI: 10.1016/j.jconrel.2014.04.026] [Citation(s) in RCA: 197] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2014] [Revised: 04/02/2014] [Accepted: 04/10/2014] [Indexed: 12/21/2022]
Abstract
Regeneration of large-size bone defects represents a significant challenge clinically, which requires the use of scaffolds with multifunction, such as anti-bacterial activity, and stimulation of osteogenesis and angiogenesis. It is known that functional ions or drug/growth factors play an important role to stimulate tissue regeneration. Mesoporous bioactive glasses (MBG) possess excellent bioactivity and drug-delivery ability as well as effective ionic release in the body fluids microenvironment due to its specific mesoporous structure and large surface area. For these reasons, functional ions (e.g. lithium (Li), strontium (Sr), Copper (Cu) and Boron (B)) and drug/growth factors (e.g. dexamethasone, vascular endothelial growth factor (VEGF) and bone morphogenetic protein (BMP)) have been incorporated into MBG, which shows high loading efficiency and effective release. The release of therapeutic ions and drug/growth factors from MBG offers it multifunctional properties, such as improved osteogenesis, angiogenesis, anti-bacterial/cancer activity. However, there is no a systematic review about delivery of therapeutic ions and drugs/growth factors from MBG for the functional effect on the tissue regeneration despite that significant progress has been achieved in the past five years. Therefore, in this review, we mainly focused on the new advances for the functional effect of delivering therapeutic ions and drugs/growth factors on the ostegeogenesis, angiogenesis and antibacterial activity. It is expected that the review will offer new concept to develop multifunctional biomaterials for bone regeneration by the synergistic effect of therapeutic ions and drug/growth factors.
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Affiliation(s)
- Chengtie Wu
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China.
| | - Jiang Chang
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China.
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Sui B, Zhong G, Sun J. Evolution of a mesoporous bioactive glass scaffold implanted in rat femur evaluated by (45)Ca labeling, tracing, and histological analysis. ACS APPLIED MATERIALS & INTERFACES 2014; 6:3528-3535. [PMID: 24444694 DOI: 10.1021/am4056886] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Mesoporous bioactive glass (MBG) as a biodegradable scaffold with a nanostructure has attracted significant attention. However, the in vivo evolution of MBG, which includes in situ degradation, the local effect induced by degradation, and the disposition of degradation products, remains unclear. In this study, we performed in situ labeling and synthesis of an MBG scaffold for the first time using (45)CaCl2. The obtained (45)Ca-MBG scaffolds possessed a mesoporous-macroporous cross-linked structure. These (45)Ca-MBG scaffolds were implanted in critical-sized rat femur defects (3 × 3 mm) for 1 day and for 1, 4, 8, and 12 weeks and analyzed by isotopic quantitative tracing. The results illustrated that the MBG scaffolds gradually degraded over time and persisted at a local level of approximately 9.63% at week 12. This finding suggests that only a very small amount of MBG-released calcium ions may have been transformed into calcium components of the new bone matrix. The research also confirmed that the active ingredients derived from the degradation of MBG scaffolds could actively regulate the mRNA expression levels of osteoblast-related genes in rat bone marrow-derived mesenchymal stem cells (rBMSCs) and promote bone regeneration in vivo. Moreover, through isotopic tracing of the entire body, (45)Ca, which disappeared in situ after implantation, could be detected in the heart, lungs, spleen, kidneys, intestines, and brain via the blood and was mainly accumulated in distal bone tissue, including the radius and cranium. However, (45)Ca radioactivity in the body tissues significantly decreased or disappeared after 12 weeks. Systemic toxicological studies on MBG scaffolds demonstrated the degradation products that spread to major organs did not cause abnormal histopathological changes. The above discoveries comprehensively address crucial issues regarding the application of MBG in vivo, and these findings provide a scientific basis for introducing a material with mesoporous structure into clinical applications.
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Affiliation(s)
- Baiyan Sui
- Shanghai Biomaterials Research & Testing Center, Shanghai Key Laboratory of Stomatology, Ninth People's Hospital, Shanghai Jiaotong University School of Medicine , Shanghai 200023, China
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Payab S, Jafari-Aghdam N, Barzegar-Jalali M, Mohammadi G, Lotfipour F, Gholikhani T, Adibkia K. Preparation and physicochemical characterization of the azithromycin-Eudragit RS100 nanobeads and nanofibers using electrospinning method. J Drug Deliv Sci Technol 2014. [DOI: 10.1016/s1773-2247(14)50123-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Fabrication of luminescent and macroporous Y2O3:Eu3+-coated silica monoliths via freeze drying. Colloids Surf A Physicochem Eng Asp 2014. [DOI: 10.1016/j.colsurfa.2013.10.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Noor Azman NZ, Siddiqui SA, Haroosh HJ, Albetran HMM, Johannessen B, Dong Y, Low IM. Characteristics of X-ray attenuation in electrospun bismuth oxide/polylactic acid nanofibre mats. JOURNAL OF SYNCHROTRON RADIATION 2013; 20:741-748. [PMID: 23955038 DOI: 10.1107/s0909049513017871] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2013] [Accepted: 06/28/2013] [Indexed: 06/02/2023]
Abstract
The characteristics of the X-ray attenuation in electrospun nano(n)- and micro(m)-Bi2O3/polylactic acid (PLA) nanofibre mats with different Bi2O3 loadings were compared as a function of energy using mammography (i.e. tube voltages of 22-49 kV) and X-ray absorption spectroscopy (XAS) (7-20 keV). Results indicate that X-ray attenuation by electrospun n-Bi2O3/PLA nanofibre mats is distinctly higher than that of m-Bi2O3/PLA nanofibre mats at all energies investigated. In addition, with increasing filler loading (n-Bi2O3 or m-Bi2O3), the porosity of the nanofibre mats decreased, thus increasing the X-ray attenuation, except for the sample containing 38 wt% Bi2O3 (the highest loading in the present study). The latter showed higher porosity, with some beads formed, thus resulting in a sudden decrease in the X-ray attenuation.
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Affiliation(s)
- Nurul Z Noor Azman
- Department of Imaging and Applied Physics, Curtin University, GPO Box U1987, Perth, WA 6845, Australia
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