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Zhao Q, Gao S. Poly (Butylene Succinate)/Silicon Nitride Nanocomposite with Optimized Physicochemical Properties, Biocompatibility, Degradability, and Osteogenesis for Cranial Bone Repair. J Funct Biomater 2022; 13:jfb13040231. [PMID: 36412871 PMCID: PMC9680472 DOI: 10.3390/jfb13040231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 10/15/2022] [Accepted: 10/31/2022] [Indexed: 11/09/2022] Open
Abstract
Congenital disease, tumors, infections, and trauma are the main reasons for cranial bone defects. Herein, poly (butylene succinate) (PB)/silicon nitride (Si3N4) nanocomposites (PSC) with Si3N4 content of 15 w% (PSC15) and 30 w% (PSC30) were fabricated for cranial bone repair. Compared with PB, the compressive strength, hydrophilicity, surface roughness, and protein absorption of nanocomposites were increased with the increase in Si3N4 content (from 15 w% to 30 w%). Furthermore, the cell adhesion, multiplication, and osteoblastic differentiation on PSC were significantly enhanced with the Si3N4 content increasing in vitro. PSC30 exhibited optimized physicochemical properties (compressive strength, surface roughness, hydrophilicity, and protein adsorption) and cytocompatibility. The m-CT and histological results displayed that the new bone formation for SPC30 obviously increased compared with PB, and PSC30 displayed proper degradability (75.3 w% at 12 weeks) and was gradually replaced by new bone tissue in vivo. The addition of Si3N4 into PB not only optimized the surface performances of PSC but also improved the degradability of PSC, which led to the release of Si ions and a weak alkaline environment that significantly promoted cell response and tissue regeneration. In short, the enhancements of cellular responses and bone regeneration of PSC30 were attributed to the synergism of the optimized surface performances and slow release of Si ion, and PSC30 were better than PB. Accordingly, PSC30, with good biocompatibility and degradability, displayed a promising and huge potential for cranial bone construction.
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Guo C, Qi J, Liu J, Wang H, Liu Y, Feng Y, Xu G. The Ability of Biodegradable Thermosensitive Hydrogel Composite Calcium-Silicon-Based Bioactive Bone Cement in Promoting Osteogenesis and Repairing Rabbit Distal Femoral Defects. Polymers (Basel) 2022; 14:polym14183852. [PMID: 36145997 PMCID: PMC9503108 DOI: 10.3390/polym14183852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Revised: 08/01/2022] [Accepted: 08/05/2022] [Indexed: 11/16/2022] Open
Abstract
Osteoporotic vertebral compression fractures are a global issue affecting the elderly population. To explore a new calcium silicate bone cement, polylactic acid (PLGA)–polyethylene glycol (PEG)–PLGA hydrogel was compounded with tricalcium silicate (C3S)/dicalcium silicate (C2S)/plaster of Paris (POP) to observe the hydration products and test physical and chemical properties. The cell compatibility and osteogenic capability were tested in vitro. The rabbit femoral condylar bone defect model was used to test its safety and effectiveness in vivo. The addition of hydrogel did not result in the formation of a new hydration product and significantly improved the injectability, anti-washout properties, and in vitro degradability of the bone cement. The cholecystokinin octapeptide-8 method showed significant proliferation of osteoblasts in bone cement. The Alizarin red staining and alkaline phosphatase activity test showed that the bone cement had a superior osteogenic property in vitro. The computed tomography scan and gross anatomy at 12 weeks after surgery in the rabbit revealed that PLGA-PEG-PLGA/C3S/C2S/POP was mostly degraded, with the formation of new bone trabeculae and calli at the external orifice of the defect. Thus, PLGA-PEG-PLGA/C3S/C2S/POP composite bone cement has a positive effect on bone repair and provides a new strategy for the clinical application of bone tissue engineering materials.
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Affiliation(s)
- Chao Guo
- Second Affiliated Hospital of Navy Medical University, Shanghai 200003, China
| | - Junqiang Qi
- Second Affiliated Hospital of Navy Medical University, Shanghai 200003, China
| | - Jia Liu
- Second Affiliated Hospital of Navy Medical University, Shanghai 200003, China
| | - Haotian Wang
- Second Affiliated Hospital of Navy Medical University, Shanghai 200003, China
| | - Yifei Liu
- Second Affiliated Hospital of Navy Medical University, Shanghai 200003, China
| | | | - Guohua Xu
- Second Affiliated Hospital of Navy Medical University, Shanghai 200003, China
- Correspondence: ; Tel.:+86-021818-86805
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Wu T, Li B, Huang W, Zeng X, Shi Y, Lin Z, Lin C, Xu W, Xia H, Zhang T. Developing a novel calcium magnesium silicate/graphene oxide incorporated silk fibroin porous scaffold with enhanced osteogenesis, angiogenesis and inhibited osteoclastogenesis. Biomed Mater 2022; 17. [PMID: 35395653 DOI: 10.1088/1748-605x/ac65cc] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Accepted: 04/08/2022] [Indexed: 11/11/2022]
Abstract
Recently, biofunctional ions (Mg2+, Si4+, etc.) and graphene derivatives are proved to be promising in stimulating bone formation. In this study, a novel inorganic/organic composite porous scaffold based on silk fibroin (SF), graphene oxide (GO), and calcium magnesium silicate (CMS) was developed for bone repair. The porous scaffolds obtained by lyophilization showed a little difference in pore structure while GO and CMS displayed a good interaction with SF matrix. The addition of CMS with good mineralization potential and sustainedly release ability of biofunctional ions (Ca2+, Mg2+ and Si4+) increased the strength of SF scaffolds a little and facilitated the osteogenic differentiation of bone mesenchymal stem cells (BMSCs) by upregulating bone formation-related genes (ALP, COL1, OC and Runx2). The further incorporation of GO in SF scaffolds enhanced the compressive strength and water retention, and also remarkably promoted the osteogenic differentiation of BMSCs. Besides, the angiogenesis of human umbilical vein endothelial cells was significantly promoted by CMS/GO/SF scaffold extract through the upregulation of angiogenesis genes (eNOs and bFGF). Moreover, the osteoclastic formation ability of RAW264.7 cells was suppressed by the released ions from CMS/GO/SF scaffold through the down-regulation of CAK, MMP9 and TRAP. The promoted osteogenesis, angiogenesis and inhibited osteoclastogenesis functions of CMS/GO/SF composite scaffold may enable it as a novel therapy for bone repair and regeneration.
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Affiliation(s)
- Tingting Wu
- Guangdong Key Lab of Medical Electronic Instruments and Polymer Material Products, Institute of Medicine and Health, Guangdong Academy of Sciences, No. 1307, Guangzhou Avenue Middle, Guangzhou, Guangdong, 510500, CHINA
| | - Binglin Li
- PLA General Hospital of Southern Theatre Command, No.111, Liuhua Road, Guangzhou, Guangdong, 510010, CHINA
| | - Wenhan Huang
- Department of Orthopaedics, Guangdong Academy of Medical Sciences, No.06, Zhongshan 2nd Road, Guangzhou, 510080, CHINA
| | - Xianli Zeng
- Southern Medical University, No.1023-1063, Shatai South Road, Baiyun District, Guangzhou, 510515, CHINA
| | - YiWan Shi
- Jinan University, 613 Huangpu Avenue West, Guangzhou, Guangdong, 510630, CHINA
| | - Zefeng Lin
- Department of Orthopedics,, PLA General Hospital of Southern Theatre Command, No.111, Liuhua road, Guangzhou, Guangdong, 510010, CHINA
| | - Chengxiong Lin
- Guangdong Academy of Sciences, No. 1307, Guangzhou Avenue Middle, Guangzhou, Guangdong, 510500, CHINA
| | - Weikang Xu
- Guangdong Academy of Sciences, No. 1307, Guangzhou Avenue Middle, Guangzhou, Guangdong, 510500, CHINA
| | - Hong Xia
- PLA General Hospital of Southern Theatre Command, No.111, Liuhua Road, Guangzhou, Guangdong, 510010, CHINA
| | - Tao Zhang
- PLA General Hospital of Southern Theatre Command, No.111, Liuhua Road, Guangzhou, 510010, CHINA
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Ouyang Y, Zhang R, Chen H, Chen L, Xi W, Li X, Zhang Q, Yan Y. Novel, degradable, and cytoactive bone cements based on magnesium polyphosphate and calcium citrate. NEW J CHEM 2022. [DOI: 10.1039/d2nj01706g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ideal bone-filling materials should be degradable and efficient for fast bone remodeling.
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Affiliation(s)
- Yalan Ouyang
- School of Chemical Engineering, Sichuan University, No. 24, Section 1, South First Ring Road, Chengdu 610065, P. R. China
| | - Rongguang Zhang
- School of Chemical Engineering, Sichuan University, No. 24, Section 1, South First Ring Road, Chengdu 610065, P. R. China
| | - Hong Chen
- College of Physics, Sichuan University, No. 24, Section 1, South First Ring Road, Chengdu 610065, P. R. China
| | - Lichao Chen
- School of Chemical Engineering, Sichuan University, No. 24, Section 1, South First Ring Road, Chengdu 610065, P. R. China
| | - Wenjing Xi
- College of Physics, Sichuan University, No. 24, Section 1, South First Ring Road, Chengdu 610065, P. R. China
| | - Xiaodan Li
- College of Physics, Sichuan University, No. 24, Section 1, South First Ring Road, Chengdu 610065, P. R. China
| | - Qiyi Zhang
- School of Chemical Engineering, Sichuan University, No. 24, Section 1, South First Ring Road, Chengdu 610065, P. R. China
| | - Yonggang Yan
- College of Physics, Sichuan University, No. 24, Section 1, South First Ring Road, Chengdu 610065, P. R. China
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Lin YT, Hsu TT, Liu YW, Kao CT, Huang TH. Bidirectional Differentiation of Human-Derived Stem Cells Induced by Biomimetic Calcium Silicate-Reinforced Gelatin Methacrylate Bioink for Odontogenic Regeneration. Biomedicines 2021; 9:biomedicines9080929. [PMID: 34440133 PMCID: PMC8394247 DOI: 10.3390/biomedicines9080929] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 07/28/2021] [Accepted: 07/29/2021] [Indexed: 01/09/2023] Open
Abstract
Tooth loss or damage is a common problem affecting millions of people worldwide, and it results in significant impacts on one’s quality of life. Dental regeneration with the support of stem cell-containing scaffolds has emerged as an alternative treatment strategy for such cases. With this concept in mind, we developed various concentrations of calcium silicate (CS) in a gelatin methacryloyl (GelMa) matrix and fabricated human dental pulp stem cells (hDPSCs)-laden scaffolds via the use of a bioprinting technology in order to determine their feasibility in promoting odontogenesis. The X-ray diffraction and Fourier transform-infrared spectroscopy showed that the incorporation of CS increased the number of covalent bonds in the GelMa hydrogels. In addition, rheological analyses were conducted for the different concentrations of hydrogels to evaluate their sol–gel transition temperature. It was shown that incorporation of CS improved the printability and printing quality of the scaffolds. The printed CS-containing scaffolds were able to release silicate (Si) ions, which subsequently significantly enhanced the activation of signaling-related markers such as ERK and significantly improved the expression of odontogenic-related markers such as alkaline phosphatase (ALP), dentin matrix protein-1 (DMP-1), and osteocalcin (OC). The calcium deposition assays were also significantly enhanced in the CS-containing scaffold. Our results demonstrated that CS/GelMa scaffolds were not only enhanced in terms of their physicochemical behaviors but the odontogenesis of the hDPSCs was also promoted as compared to GelMa scaffolds. These results demonstrated that CS/GelMa scaffolds can serve as cell-laden materials for future clinical applications and use in dentin regeneration.
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Affiliation(s)
- Yi-Ting Lin
- School of Dentistry, Chung Shan Medical University, Taichung 40201, Taiwan; (Y.-T.L.); (C.-T.K.)
| | - Tuan-Ti Hsu
- x-Dimension Center for Medical Research and Translation, China Medical University Hospital, Taichung 404332, Taiwan; (T.-T.H.); (Y.-W.L.)
| | - Yu-Wei Liu
- x-Dimension Center for Medical Research and Translation, China Medical University Hospital, Taichung 404332, Taiwan; (T.-T.H.); (Y.-W.L.)
| | - Chia-Tze Kao
- School of Dentistry, Chung Shan Medical University, Taichung 40201, Taiwan; (Y.-T.L.); (C.-T.K.)
- Department of Stomatology, Chung Shan Medical University Hospital, Taichung 40201, Taiwan
| | - Tsui-Hsien Huang
- School of Dentistry, Chung Shan Medical University, Taichung 40201, Taiwan; (Y.-T.L.); (C.-T.K.)
- Department of Stomatology, Chung Shan Medical University Hospital, Taichung 40201, Taiwan
- Correspondence: ; Tel.: +886-4-22967979 (ext. 3700)
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He H, Ren H, Ding Z, Ji M, Chen H, Yan Y. Developing a novel magnesium calcium phosphate/sodium alginate composite cement with high strength and proper self-setting time for bone repair. J Biomater Appl 2021; 36:346-357. [PMID: 34053305 DOI: 10.1177/08853282211021535] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
In this work, novel magnesium calcium phosphate/sodium alginate composite cements were successfully fabricated with a proper setting time (5-24 min) and high compressive strength (91.1 MPa). The physicochemical and biological properties of the cement in vitro were fully characterized. The composite cements could gradually degrade in PBS as the soaking time increase, and the weight loss reached 20.74% by the end of 56th day. The cements could induce the deposition of Ca-P layer in SBF. Cell experiments proved that the extracts of the composite cements can effectively promote the proliferation and differentiation of the mouse bone marrow mesenchymal stem cells (MSCs). These preliminary results indicate that the magnesium calcium phosphate/sodium alginate composite cements could be promising as potential bone repair candidate materials.
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Affiliation(s)
- Haosheng He
- College of Physics, Sichuan University, Chengdu, China
| | - Haohao Ren
- College of Physics, Sichuan University, Chengdu, China
| | - Zhengwen Ding
- College of Physics, Sichuan University, Chengdu, China
| | - Mizhi Ji
- College of Physics, Sichuan University, Chengdu, China
| | - Hong Chen
- College of Physics, Sichuan University, Chengdu, China
| | - Yonggang Yan
- College of Physics, Sichuan University, Chengdu, China
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Rationally designed protein cross-linked hydrogel for bone regeneration via synergistic release of magnesium and zinc ions. Biomaterials 2021; 274:120895. [PMID: 34020269 DOI: 10.1016/j.biomaterials.2021.120895] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 04/29/2021] [Accepted: 05/09/2021] [Indexed: 12/20/2022]
Abstract
The development of recombinant protein cross-linked injectable hydrogels with good mechanical strength and effective drug loading capacity for bone regeneration is extremely attractive and rarely reported. Here, we report the fabrication of a smart hydrogel delivery system by incorporating a rationally designed T4 lysozyme mutant (T4M) to mediate the localized delivery and synergistic release of Mg2+ and Zn2+ for bone repair. Apart from its intrinsic antibacterial properties, T4M bears abundant free amine groups on its surface to function as effective covalent crosslinkers to strengthen the hydrogel network as well as exhibits specific binding affinity to multivalent cations such as Zn2+. Moreover, the integrin receptor-binding Arg-Gly-Asp (RGD) sequence was introduced onto the C-terminus of T4 lysozyme to improve its cellular affinity and further facilitate rapid tissue regeneration. The final composite hydrogel displays excellent injectability, improved mechanical properties, antibacterial activity, and unique bioactivities. The effective loading of Mg2+/Zn2+ in the hydrogels could mediate the sequential and sustained release of Mg2+ and Zn2+, thereby resulting in synergistic enhancement on bone regeneration through modulation of the MAPK signaling pathway. We believe that the strategy proposed in this paper opens up a new route for developing protein cross-linked smart delivery systems for tissue regeneration.
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Evaluation of the Hydration Characteristics and Anti-Washout Resistance of Non-Dispersible Underwater Concrete with Nano-SiO 2 and MgO. MATERIALS 2021; 14:ma14061328. [PMID: 33801875 PMCID: PMC7999238 DOI: 10.3390/ma14061328] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Revised: 03/05/2021] [Accepted: 03/08/2021] [Indexed: 12/14/2022]
Abstract
In this paper, the effect of nano-SiO2 (NS) and MgO on the hydration characteristics and anti-washout resistance of non-dispersible underwater concrete (UWC) was evaluated. A slump flow test, a viscosity test, and setting time measurement were conducted to identify the impacts of NS and MgO on the rheological properties of UWC. The pH and turbidity were measured to investigate the anti-washout performance of UWC mixes. To analyze the hydration characteristics and mechanical properties, hydration heat analysis, a compressive strength test, and thermogravimetric analyses were conducted. The experimental results showed that the fine particles of NS and MgO reduced slump flow, increased viscosity, and enhanced the anti-washout resistance of UWC. In addition, both NS and MgO shortened the initial and final setting times, and the replacement of MgO specimens slightly prolonged the setting time. NS accelerated the peak time and increased the peak temperature, and MgO delayed the hydration process and reduced the temperature due to the formation of brucite. The compressive results showed that NS improved the compressive strength of the UWC, and MgO slightly decreased the strength. The addition of NS also resulted in the formation of extra C-S-H, and the replacement of MgO caused the generation of a hydrotalcite phase.
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Xie Y, Liu J, Cai S, Bao X, Li Q, Xu G. Setting Characteristics and High Compressive Strength of an Anti-washout, Injectable Calcium Phosphate Cement Combined with Thermosensitive Hydrogel. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E5779. [PMID: 33348902 PMCID: PMC7766756 DOI: 10.3390/ma13245779] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Revised: 12/09/2020] [Accepted: 12/11/2020] [Indexed: 12/11/2022]
Abstract
In this work, a thermosensitive poly(D,L-lactide-co-glycolide)-poly(ethylene glycol)-poly(D,L-lactide-co-glycolide) (PLGA-PEG-PLGA) hydrogel was introduced into calcium phosphate cement (CPC) to enhance the anti-washout property of CPC. The effects of the hydrogel on the setting time, injectability, anti-washout property and compressive strength of CPC were thoroughly investigated. The results showed that the hydrogel significantly increased the injectability and anti-washout property of CPC, meanwhile maintained the setting time with an acceptable range. Moreover, the hydrogel improved the initial compressive strength of CPC. The composite cement with 20% v/v hydrogel in the liquid phase showed fine crystals of hydration product, a more compact microstructure and lower porosity compared with control CPC. The analysis of X-ray diffraction (XRD), infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS) indicated that suitable volume ratio of hydrogel (20% v/v) in the setting liquid of CPC could promote the formation of hydroxyapatite in the early hydration period. The degradation behavior of the cement was characterized by immersion tests in simulated body fluid. The hydrogel had no adverse effect on the degradation rate of CPC over the immersion period of 23 days. This study indicated that incorporating PLGA-PEG-PLGA hydrogel could be a promising strategy to reinforce the handing properties and initial compressive strength of calcium phosphate cement.
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Affiliation(s)
- Yao Xie
- Key Laboratory for Advanced Ceramics and Machining Technology of Ministry of Education, Tianjin University, Tianjin 300072, China; (Y.X.); (Q.L.)
| | - Jia Liu
- Department of Orthopedic Surgery, Spine Center, Naval Medical University, Shanghai 200003, China; (J.L.); (X.B.)
| | - Shu Cai
- Key Laboratory for Advanced Ceramics and Machining Technology of Ministry of Education, Tianjin University, Tianjin 300072, China; (Y.X.); (Q.L.)
| | - Xiaogang Bao
- Department of Orthopedic Surgery, Spine Center, Naval Medical University, Shanghai 200003, China; (J.L.); (X.B.)
| | - Qianqian Li
- Key Laboratory for Advanced Ceramics and Machining Technology of Ministry of Education, Tianjin University, Tianjin 300072, China; (Y.X.); (Q.L.)
| | - Guohua Xu
- Department of Orthopedic Surgery, Spine Center, Naval Medical University, Shanghai 200003, China; (J.L.); (X.B.)
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Developing a biodegradable tricalcium silicate/glucono-delta-lactone/calcium sulfate dihydrate composite cement with high preliminary mechanical property for bone filling. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 119:111621. [PMID: 33321663 DOI: 10.1016/j.msec.2020.111621] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2020] [Revised: 10/03/2020] [Accepted: 10/05/2020] [Indexed: 12/12/2022]
Abstract
Bone cements with the feature of easily shaping could ideally match the defect site and prevent the ingrowth of fibrous tissue. In this manuscript, a biodegradable tricalcium silicate (C3S)/glucono-delta-lactone (GDL)/calcium sulfate dihydrate (CSD) organic-inorganic composite cement was fabricated with shorter setting time (less than 15 min) and high preliminary mechanical property (5.27 MPa in the first hour). Many methods were applied to study the physicochemical and biological properties of the cement in vitro. The weight loss in PBS can reach 58% after 12 weeks soaking indicating the better biodegradability. The excellent bioactivity in vitro was emerging after the cement was soaked in the simulated body fluid. The cell experiments showed that suitable concentration of the extract liquid of cement was conducive to the proliferation, differentiation and extracellular matrix calcification of the mouse bone marrow stromal cells. Briefly, the C3S/GDL/CSD composite cement would have the bright capacity for bone filling.
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Chen H, Ji M, Ding Z, Yan Y. Vitamin D3-loaded calcium citrate/calcium sulfate composite cement with enhanced physicochemical properties, drug release, and cytocompatibility. J Biomater Appl 2020; 34:1343-1354. [DOI: 10.1177/0885328220904498] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Hong Chen
- College of Physics, Sichuan University, Chengdu, China
| | - Mizhi Ji
- College of Physics, Sichuan University, Chengdu, China
| | - Zhengwen Ding
- College of Physics, Sichuan University, Chengdu, China
| | - Yonggang Yan
- College of Physics, Sichuan University, Chengdu, China
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Du Y, Li L, Peng H, Zheng H, Cao S, Lv G, Yang A, Li H, Liu T. A Spray‐Filming Self‐Healing Hydrogel Fabricated from Modified Sodium Alginate and Gelatin as a Bacterial Barrier. Macromol Biosci 2019; 20:e1900303. [DOI: 10.1002/mabi.201900303] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Revised: 11/05/2019] [Indexed: 12/13/2022]
Affiliation(s)
- Yan Du
- College of PhysicsSichuan University Chengdu 610065 China
| | - Lin Li
- College of PhysicsSichuan University Chengdu 610065 China
| | - Haitao Peng
- College of PhysicsSichuan University Chengdu 610065 China
| | - Heng Zheng
- College of PhysicsSichuan University Chengdu 610065 China
| | - Shuang Cao
- Department of Orthopaedic OncologyChangzheng HospitalSecond Military Medical University Shanghai 200003 China
| | - Guoyu Lv
- College of PhysicsSichuan University Chengdu 610065 China
| | - Aiping Yang
- College of PhysicsSichuan University Chengdu 610065 China
| | - Hong Li
- College of PhysicsSichuan University Chengdu 610065 China
| | - Tielong Liu
- Department of Orthopaedic OncologyChangzheng HospitalSecond Military Medical University Shanghai 200003 China
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Mei Q, Lin L, Wang J, Cai B, Zou Q, Li J, Li Y, Zuo Y. Chemical reaction kinetics and the characteristic properties of injectable adhesives of nano-hydroxyapatite/Ag3PO4/polyurethane for bone and tooth repair. SN APPLIED SCIENCES 2019. [DOI: 10.1007/s42452-019-0707-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
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Chiu YC, Shie MY, Lin YH, Lee AKX, Chen YW. Effect of Strontium Substitution on the Physicochemical Properties and Bone Regeneration Potential of 3D Printed Calcium Silicate Scaffolds. Int J Mol Sci 2019; 20:E2729. [PMID: 31163656 PMCID: PMC6600364 DOI: 10.3390/ijms20112729] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Revised: 06/02/2019] [Accepted: 06/02/2019] [Indexed: 12/18/2022] Open
Abstract
In this study, we synthesized strontium-contained calcium silicate (SrCS) powder and fabricated SrCS scaffolds with controlled precise structures using 3D printing techniques. SrCS scaffolds were shown to possess increased mechanical properties as compared to calcium silicate (CS) scaffolds. Our results showed that SrCS scaffolds had uniform interconnected macropores (~500 µm) with a compressive strength 2-times higher than that of CS scaffolds. The biological behaviors of SrCS scaffolds were assessed using the following characteristics: apatite-precipitating ability, cytocompatibility, proliferation, and osteogenic differentiation of human mesenchymal stem cells (MSCs). With CS scaffolds as controls, our results indicated that SrCS scaffolds demonstrated good apatite-forming bioactivity with sustained release of Si and Sr ions. The in vitro tests demonstrated that SrCS scaffolds possessed excellent biocompatibility which in turn stimulated adhesion, proliferation, and differentiation of MSCs. In addition, the SrCS scaffolds were able to enhance MSCs synthesis of osteoprotegerin (OPG) and suppress macrophage colony-stimulating factor (M-CSF) thus disrupting normal bone homeostasis which led to enhanced bone formation over bone resorption. Implanted SrCS scaffolds were able to promote new blood vessel growth and new bone regeneration within 4 weeks after implantation in critical-sized rabbit femur defects. Therefore, it was shown that 3D printed SrCS scaffolds with specific controllable structures can be fabricated and SrCS scaffolds had enhanced mechanical property and osteogenesis behavior which makes it a suitable potential candidate for bone regeneration.
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Affiliation(s)
- Yung-Cheng Chiu
- School of Medicine, China Medical University, Taichung 40447, Taiwan.
- Department of Orthopedic Surgery, China Medical University Hospital, Taichung 40447, Taiwan.
| | - Ming-You Shie
- School of Dentistry, China Medical University, Taichung 40447, Taiwan.
- 3D Printing Medical Research Center, China Medical University Hospital, Taichung 40447, Taiwan.
- Department of Bioinformatics and Medical Engineering, Asia University, Taichung 40447, Taiwan.
| | - Yen-Hong Lin
- 3D Printing Medical Research Center, China Medical University Hospital, Taichung 40447, Taiwan.
- The Ph.D. Program for Medical Engineering and Rehabilitation Science, China Medical University, Taichung 40447, Taiwan.
| | - Alvin Kai-Xing Lee
- School of Medicine, China Medical University, Taichung 40447, Taiwan.
- 3D Printing Medical Research Center, China Medical University Hospital, Taichung 40447, Taiwan.
| | - Yi-Wen Chen
- Graduate Institute of Biomedical Sciences, China Medical University, Taichung 40447, Taiwan.
- 3D Printing Medical Research Institute, Asia University, Taichung 40447, Taiwan.
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Abou Hammad AB, Elnahrawy AM, Youssef AM, Youssef AM. Sol gel synthesis of hybrid chitosan/calcium aluminosilicate nanocomposite membranes and its application as support for CO 2 sensor. Int J Biol Macromol 2018; 125:503-509. [PMID: 30537501 DOI: 10.1016/j.ijbiomac.2018.12.077] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Revised: 11/17/2018] [Accepted: 12/07/2018] [Indexed: 02/06/2023]
Abstract
Modification of chitosan with cross-linkers, blends with various kinds of polymers, nanoparticles and new organic-inorganic hybrid composites in order to obtain some improved properties attached more attention nowadays due to their good sensitivity in changing electrical and optical properties. In the current work modified hybrid chitosan/calcium aluminosilicate (CH/CAS) nanocomposite membranes and doped with (3, 5 & 7 mol%) Al2O3 nanoparticles were synthesized via sol-gel process in acidic conditions, which can be efficiently employed to capture CO2 gas at lower and moderate temperatures. Furthermore, the fabricated CH/CAS nanocomposite membrane loading with (3, 5 & 7 mol%) Al2O3 were investigated using XRD, SEM, FTIR and dielectric measurements. The results indicated that the incorporation of Al2O3 in CH/CAS matrix significantly affected on the structural, dielectric and appeared good reliability for sensing CO2 at atmospheric pressure. The dielectric behaviour for the prepared CH/CAS indicates that the dielectric constant (ε') decreases. According to XRD the introducing of Al2O3 leads to increase the crystallinity of the system and thus the dipoles of the system orient hardly with the applied field and results in lesser dielectric constant (ε'). Correspondingly, the CH/CAS nanocomposite membranes were characterized and its performance as CO2 gas sensor was evaluated.
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Affiliation(s)
- Ali B Abou Hammad
- Solid State Physics Department, Physics Research Division, National Research Center, El-Buhouth St., Dokki, Giza 12622, Egypt
| | - Amany M Elnahrawy
- Solid State Physics Department, Physics Research Division, National Research Center, El-Buhouth St., Dokki, Giza 12622, Egypt
| | - Ahmed M Youssef
- Inorganic Chemistry Department, National Research Centre, El-Buhouth St., Dokki, Giza 12622, Egypt
| | - Ahmed M Youssef
- Packaging Materials Department, National Research Centre, El-Bohouth St., Dokki, Giza 12622, Egypt.
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