1
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Chen CF, Chou YS, Lee TM, Fu YC, Ou SF, Chen SH, Lee TC, Wang YH. The Uniform Distribution of Hydroxyapatite in a Polyurethane Foam-Based Scaffold (PU/HAp) to Enhance Bone Repair in a Calvarial Defect Model. Int J Mol Sci 2024; 25:6440. [PMID: 38928145 PMCID: PMC11203484 DOI: 10.3390/ijms25126440] [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: 04/29/2024] [Revised: 06/03/2024] [Accepted: 06/05/2024] [Indexed: 06/28/2024] Open
Abstract
Polyurethane (PU) is a promising material for addressing challenges in bone grafting. This study was designed to enhance the bone grafting capabilities of PU by integrating hydroxyapatite (HAp), which is known for its osteoconductive and osteoinductive potential. Moreover, a uniform distribution of HAp in the porous structure of PU increased the effectiveness of bone grafts. PEG/APTES-modified scaffolds were prepared through self-foaming reactions. A uniform pore structure was generated during the spontaneous foaming reaction, and HAp was uniformly distributed in the PU structure (PU15HAp and PU30HAp) during foaming. Compared with the PU scaffolds, the HAp-modified PU scaffolds exhibited significantly greater protein absorption. Importantly, the effect of the HAp-modified PU scaffold on bone repair was tested in a rat calvarial defect model. The microstructure of the newly formed bone was analyzed with microcomputed tomography (μ-CT). Bone regeneration at the defect site was significantly greater in the HAp-modified PU scaffold group than in the PU group. This innovative HAp-modified PU scaffold improves current bone graft materials, providing a promising avenue for improved bone regeneration.
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Affiliation(s)
- Chiu-Fang Chen
- School of Dentistry, College of Dental Medicine, Kaohsiung Medical University, 100, Shih-Chuan 1st Road, Kaohsiung 80708, Taiwan;
| | - Ya-Shuan Chou
- Orthopaedic Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; (Y.-S.C.); (T.-C.L.)
- Regenerative Medicine and Cell Therapy Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Tzer-Min Lee
- Institute of Oral Medicine, National Cheng Kung University, No. 1, University Road, Tainan 701, Taiwan;
- School of Dentistry, National Cheng Kung University, Tainan 701, Taiwan
| | - Yin-Chih Fu
- Orthopaedic Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; (Y.-S.C.); (T.-C.L.)
- Regenerative Medicine and Cell Therapy Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Department of Orthopedics, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Department of Orthopedics, Kaohsiung Municipal Ta-Tung Hospital, Kaohsiung 80145, Taiwan
- Department of Orthopedics, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 80756, Taiwan
| | - Shih-Fu Ou
- Department of Mold and Die Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 807, Taiwan;
| | - Szu-Hsien Chen
- Institute of Polymer Science and Engineering, College of Engineering, National Taiwan University, Taipei 106216, Taiwan;
| | - Tien-Ching Lee
- Orthopaedic Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; (Y.-S.C.); (T.-C.L.)
- Regenerative Medicine and Cell Therapy Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Department of Orthopedics, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Department of Orthopedics, Kaohsiung Municipal Ta-Tung Hospital, Kaohsiung 80145, Taiwan
- Department of Orthopedics, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 80756, Taiwan
| | - Yan-Hsiung Wang
- School of Dentistry, College of Dental Medicine, Kaohsiung Medical University, 100, Shih-Chuan 1st Road, Kaohsiung 80708, Taiwan;
- Orthopaedic Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; (Y.-S.C.); (T.-C.L.)
- Regenerative Medicine and Cell Therapy Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
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2
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Fendi F, Abdullah B, Suryani S, Usman AN, Tahir D. Development and application of hydroxyapatite-based scaffolds for bone tissue regeneration: A systematic literature review. Bone 2024; 183:117075. [PMID: 38508371 DOI: 10.1016/j.bone.2024.117075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Revised: 03/14/2024] [Accepted: 03/15/2024] [Indexed: 03/22/2024]
Abstract
Hydroxyapatite [HA, Ca10(PO4)6(OH)2], with its robust biocompatibility and bioactivity, has found extensive utility in bone grafting, replacement therapies, and supplemental medical materials. HA is highly regarded for its osteoconductive properties because it boasts hydrophilicity, nontoxicity, non-allergenicity, and non-mutagenicity. Nevertheless, HA's intrinsic mechanical weakness has spurred efforts to enhance its properties. This enhancement is achieved through ion incorporation, with elements such as magnesium, zinc, lithium, strontium, boron, and others being integrated into the HA structure. In the domain of orthopedics, HA-based scaffolds have emerged as a solution for addressing prevalent issues like bone deformities and defects stemming from congenital anomalies, injuries, trauma, infections, or tumors. The fabrication of three-dimensional scaffolds (3D scaffolds) has enabled advancements in bone regeneration and replacement, with a focus on practical applications such as repairing calvarial, skull, and femoral defects. In vitro and in vivo assessments have substantiated the effectiveness of 3D scaffolds for bone defect repair, regeneration, and tissue engineering. Beyond bone-related applications, scaffolds demonstrate versatility in enhancing cartilage healing and serving as bioimplants. The wide array of scaffold applications underscores their ongoing potential for further development in the realm of medical science.
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Affiliation(s)
- Fendi Fendi
- Department of Physics, Hasanuddin University, Makassar 90245, Indonesia
| | - Bualkar Abdullah
- Department of Physics, Hasanuddin University, Makassar 90245, Indonesia
| | - Sri Suryani
- Department of Physics, Hasanuddin University, Makassar 90245, Indonesia
| | | | - Dahlang Tahir
- Department of Physics, Hasanuddin University, Makassar 90245, Indonesia.
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3
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Zhang W, Yu M, Cao Y, Zhuang Z, Zhang K, Chen D, Liu W, Yin J. An anti-bacterial porous shape memory self-adaptive stiffened polymer for alveolar bone regeneration after tooth extraction. Bioact Mater 2023; 21:450-463. [PMID: 36185742 PMCID: PMC9486049 DOI: 10.1016/j.bioactmat.2022.08.030] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 08/22/2022] [Accepted: 08/25/2022] [Indexed: 11/18/2022] Open
Affiliation(s)
- Weijun Zhang
- Department of Polymer Materials, School of Materials Science and Engineering, Shanghai University, Shanghai, 200444, China
| | - Meilin Yu
- Department of Endodontics, Shanghai Stomatological Hospital & School of Stomatology, Fudan University, Shanghai, 200001, China
- Shanghai Key Laboratory of Craniomaxillofacial Development and Diseases, Fudan University, Shanghai, 200001, China
| | - Yongqiang Cao
- Department of Polymer Materials, School of Materials Science and Engineering, Shanghai University, Shanghai, 200444, China
| | - Zihan Zhuang
- Department of Polymer Materials, School of Materials Science and Engineering, Shanghai University, Shanghai, 200444, China
| | - Kunxi Zhang
- Department of Polymer Materials, School of Materials Science and Engineering, Shanghai University, Shanghai, 200444, China
- Corresponding author.
| | - Dong Chen
- Department of Endodontics, Shanghai Stomatological Hospital & School of Stomatology, Fudan University, Shanghai, 200001, China
- Shanghai Key Laboratory of Craniomaxillofacial Development and Diseases, Fudan University, Shanghai, 200001, China
- Corresponding author. Department of Endodontics, Shanghai Stomatological Hospital & School of Stomatology, Fudan University, Shanghai, 200001, China.
| | - Wenguang Liu
- School of Material Science and Engineering, Tianjin Key Laboratory of Composite and Functional Materials, Tianjin University, Tianjin, 300350, China
- Corresponding author.
| | - Jingbo Yin
- Department of Polymer Materials, School of Materials Science and Engineering, Shanghai University, Shanghai, 200444, China
- Corresponding author.
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4
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Bil M, Jurczyk-Kowalska M, Kopeć K, Heljak M. Study of Correlation between Structure and Shape-Memory Effect/Drug-Release Profile of Polyurethane/Hydroxyapatite Composites for Antibacterial Implants. Polymers (Basel) 2023; 15:polym15040938. [PMID: 36850222 PMCID: PMC9962404 DOI: 10.3390/polym15040938] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 02/03/2023] [Accepted: 02/09/2023] [Indexed: 02/16/2023] Open
Abstract
The effectiveness of multifunctional composites that combine a shape-memory polyurethane (PU) matrix with hydroxyapatite (HA) as a bioactive agent and antibiotics molecules results from a specific composite structure. In this study, structure-function correlations of PU-based composites consisting of 3, 5, and 10 (wt%) of HA and (5 wt%) of gentamicin sulfate (GeS) as a model drug were investigated. The performed analysis revealed that increasing HA content up to 5 wt% enhanced hydrogen-bonding interaction within the soft segments of the PU. Differential-scanning-calorimetry (DSC) analysis confirmed the semi-crystalline structure of the composites. Hydroxyapatite enhanced thermal stability was confirmed by thermogravimetric analysis (TGA), and the water contact angle evaluated hydrophilicity. The shape-recovery coefficient (Rr) measured in water, decreased from 94% for the PU to 86% for the PU/GeS sample and to 88-91% for the PU/HA/GeS composites. These values were positively correlated with hydrogen-bond interactions evaluated using the Fourier-transform-infrared (FTIR) spectroscopy. Additionally, it was found that the shape-recovery process initiates drug release. After shape recovery, the drug concentration in water was 17 μg/mL for the PU/GeS sample and 33-47 μg/mL for the PU HA GeS composites. Antibacterial properties of developed composites were confirmed by the agar-diffusion test against Escherichia coli and Staphylococcus epidermidis.
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Affiliation(s)
- Monika Bil
- Centre for Advanced Materials and Technologies CEZAMAT, Warsaw University of Technology, Poleczki 19 Street, 02-822 Warsaw, Poland
- Faculty of Materials Science and Engineering, Warsaw University of Technology, Woloska 141, 02-507 Warsaw, Poland
- Correspondence:
| | - Magdalena Jurczyk-Kowalska
- Faculty of Materials Science and Engineering, Warsaw University of Technology, Woloska 141, 02-507 Warsaw, Poland
| | - Kamil Kopeć
- Department of Biotechnology and Bioprocess Engineering, Faculty of Chemical and Process Engineering, Warsaw University of Technology, Waryńskiego 1, 00-645 Warsaw, Poland
| | - Marcin Heljak
- Faculty of Materials Science and Engineering, Warsaw University of Technology, Woloska 141, 02-507 Warsaw, Poland
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5
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Four-Dimensional Printing and Shape Memory Materials in Bone Tissue Engineering. Int J Mol Sci 2023; 24:ijms24010814. [PMID: 36614258 PMCID: PMC9821376 DOI: 10.3390/ijms24010814] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 12/24/2022] [Accepted: 12/27/2022] [Indexed: 01/05/2023] Open
Abstract
The repair of severe bone defects is still a formidable clinical challenge, requiring the implantation of bone grafts or bone substitute materials. The development of three-dimensional (3D) bioprinting has received considerable attention in bone tissue engineering over the past decade. However, 3D printing has a limitation. It only takes into account the original form of the printed scaffold, which is inanimate and static, and is not suitable for dynamic organisms. With the emergence of stimuli-responsive materials, four-dimensional (4D) printing has become the next-generation solution for biological tissue engineering. It combines the concept of time with three-dimensional printing. Over time, 4D-printed scaffolds change their appearance or function in response to environmental stimuli (physical, chemical, and biological). In conclusion, 4D printing is the change of the fourth dimension (time) in 3D printing, which provides unprecedented potential for bone tissue repair. In this review, we will discuss the latest research on shape memory materials and 4D printing in bone tissue repair.
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6
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Wang J, Dai D, Xie H, Li D, Xiong G, Zhang C. Biological Effects, Applications and Design Strategies of Medical Polyurethanes Modified by Nanomaterials. Int J Nanomedicine 2022; 17:6791-6819. [PMID: 36600880 PMCID: PMC9807071 DOI: 10.2147/ijn.s393207] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Accepted: 12/20/2022] [Indexed: 12/30/2022] Open
Abstract
Polyurethane (PU) has wide application and popularity as medical apparatus due to its unique structural properties relationship. However, there are still some problems with medical PUs, such as a lack of functionality, insufficient long-term implantation safety, undesired stability, etc. With the rapid development of nanotechnology, the nanomodification of medical PU provides new solutions to these clinical problems. The introduction of nanomaterials could optimize the biocompatibility, antibacterial effect, mechanical strength, and degradation of PUs via blending or surface modification, therefore expanding the application range of medical PUs. This review summarizes the current applications of nano-modified medical PUs in diverse fields. Furthermore, the underlying mechanisms in efficiency optimization are analyzed in terms of the enhanced biological and mechanical properties critical for medical use. We also conclude the preparation schemes and related parameters of nano-modified medical PUs, with discussions about the limitations and prospects. This review indicates the current status of nano-modified medical PUs and contributes to inspiring novel and appropriate designing of PUs for desired clinical requirements.
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Affiliation(s)
- Jianrong Wang
- Stomatological Hospital, Southern Medical University, Guangzhou, 510280, People’s Republic of China
| | - Danni Dai
- Stomatological Hospital, Southern Medical University, Guangzhou, 510280, People’s Republic of China
| | - Hanshu Xie
- Stomatological Hospital, Southern Medical University, Guangzhou, 510280, People’s Republic of China
| | - Dan Li
- Stomatological Hospital, Southern Medical University, Guangzhou, 510280, People’s Republic of China
| | - Gege Xiong
- Stomatological Hospital, Southern Medical University, Guangzhou, 510280, People’s Republic of China
| | - Chao Zhang
- Stomatological Hospital, Southern Medical University, Guangzhou, 510280, People’s Republic of China,Correspondence: Chao Zhang, Email
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7
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Shi S, Ma T, Gu L, Zhang Y. Thermal Behaviors, Interfacial Microstructure and Molecular Orientation of Shape Memory Polyurethane/SiO2 Based Sealant for Concrete Pavement. Polymers (Basel) 2022; 14:polym14163336. [PMID: 36015597 PMCID: PMC9416009 DOI: 10.3390/polym14163336] [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: 07/15/2022] [Revised: 08/11/2022] [Accepted: 08/15/2022] [Indexed: 11/16/2022] Open
Abstract
Expansion joint failure is one of the main causes that lead to the damages of concrete pavement. The silicon dioxide/shape memory polyurethane (SiO2/SMPU) is a new kind of sealant which can use its shape memory performance to adapt to the width of the expansion joint with the change of pavement temperature, and it can effectively prolong the service life of the pavement and reduce maintenance costs. In this study, the effects of programming and the addition of SiO2 particles to the thermodynamic properties of the specimens were detected using differential scanning calorimetry (DSC), the optimal shape memory programming temperature of which is 72.9 °C. Combined with scanning electron microscopy (SEM) and shape memory effect test, the particles are evenly distributed between the two phases, and the shape fixation rate (Rf) of 98.15% and the shape recovery rate (Rr) of 97.31% show that the composite has a good shape memory effect. Fourier transform infrared spectroscopy (FTIR) and dynamic infrared dichroism illustrate the change of the hydrogen bond of soft and hard segments with the SiO2 particles in the shape memory cycle, revealing the optimal shape memory programming process. This study provides an insight into the reinforcement mechanism of SiO2 nanoparticles in SMPU matrix and verify whether it can meet the engineering requirements of expansion joints when used as a sealant of concrete pavement.
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8
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Wang L, Zeng X, Yan G, Chen X, Luo K, Zhou S, Zhang P, Li J, Wong TW. Biomimetic scaffolds with programmable pore structures for minimum invasive bone repair. NANOSCALE 2021; 13:16680-16689. [PMID: 34590639 DOI: 10.1039/d1nr04124j] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Due to the complexity of surgery for large-area bone injuries, implanting a large volume of materials into the injury site remains a big challenge in orthopedics. To solve this difficulty, in this study, a series of biomimetic hydroxyapatite/shape-memory composite scaffolds were designed and synthesized with programmable pore structures, based on poly(ε-caprolactone) (PCL), polytetrahydrofuran (PTMG) and the osteoconductive hydroxyapatite (HA). The obtained scaffolds presented various pore structures, high connectivity, tunable mechanical properties, and excellent shape memory performance. Moreover, the mineralization activity of the developed scaffolds could enhance the formation of hydroxyapatite and they showed good biocompatibility in vitro. The in vivo experiments show that scaffolds could promote the formation of new bone in critical size cranial defects. The programmable porous scaffold biomaterials exhibited potential application promise in bone regeneration.
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Affiliation(s)
- Li Wang
- College of Materials, Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, Sichuan, P. R. China.
- College of Chemistry, Sichuan University, Chengdu 610064, Sichuan, P. R. China
| | - Xiyang Zeng
- College of Materials, Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, Sichuan, P. R. China.
| | - Guilong Yan
- College of Materials, Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, Sichuan, P. R. China.
| | - Xiaohu Chen
- College of Materials, Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, Sichuan, P. R. China.
| | - Kun Luo
- College of Materials, Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, Sichuan, P. R. China.
| | - Shiyi Zhou
- College of Materials, Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, Sichuan, P. R. China.
| | - Peicong Zhang
- College of Materials, Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, Sichuan, P. R. China.
| | - Junfeng Li
- College of Materials, Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, Sichuan, P. R. China.
| | - Tuck-Whye Wong
- Advanced Membrane Technology Centre, Universiti Teknologi Malaysia, Johor 81310, Malaysia
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9
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Abstract
Smart scaffolds based on shape memory polymer (SMPs) have been increasingly studied in tissue engineering. The unique shape actuating ability of SMP scaffolds has been utilized to improve delivery and/or tissue defect filling. In this regard, these scaffolds may be self-deploying, self-expanding, or self-fitting. Smart scaffolds are generally thermoresponsive or hydroresponsive wherein shape recovery is driven by an increase in temperature or by hydration, respectively. Most smart scaffolds have been directed towards regenerating bone, cartilage, and cardiovascular tissues. A vast variety of smart scaffolds can be prepared with properties targeted for a specific tissue application. This breadth of smart scaffolds stems from the variety of compositions employed as well as the numerous methods used to fabricated scaffolds with the desired morphology. Smart scaffold compositions span across several distinct classes of SMPs, affording further tunability of properties using numerous approaches. Specifically, these SMPs include those based on physically cross-linked and chemically cross-linked networks and include widely studied shape memory polyurethanes (SMPUs). Various additives, ranging from nanoparticles to biologicals, have also been included to impart unique functionality to smart scaffolds. Thus, given their unique functionality and breadth of tunable properties, smart scaffolds have tremendous potential in tissue engineering.
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Affiliation(s)
- Michaela R Pfau
- Department of Biomedical Engineering, Texas A&M University, College Station, TX 77843, USA.
| | - Melissa A Grunlan
- Department of Biomedical Engineering, Texas A&M University, College Station, TX 77843, USA. and Department of Materials Science and Engineering, Texas A&M University, College Station, TX 77843, USA and Department of Chemistry, Texas A&M University, College Station, TX 77843, USA
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10
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Hejazi F, Bagheri-Khoulenjani S, Olov N, Zeini D, Solouk A, Mirzadeh H. Fabrication of nanocomposite/nanofibrous functionally graded biomimetic scaffolds for osteochondral tissue regeneration. J Biomed Mater Res A 2021; 109:1657-1669. [PMID: 33687800 DOI: 10.1002/jbm.a.37161] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 02/24/2021] [Accepted: 02/26/2021] [Indexed: 12/24/2022]
Abstract
One of the main challenges in treating osteochondral lesions via tissue engineering approach is providing scaffolds with unique characteristics to mimic the complexity. It has led to application of heterogeneous scaffolds as a potential candidate for engineering of osteochondral tissues, in which graded multilayered-structure should promote bone and cartilage growth. By designing three-dimensional (3D)-nanofibrous scaffolds mimicking the native extracellular matrix's nanoscale structure, cells can grow in controlled conditions and regenerate the damaged tissue. In this study, novel 3D-functionality graded nanofibrous scaffolds composed of five layers based on different compositions containing polycaprolactone(PCL)/gelatin(Gel)/nanohydroxyapatite (nHA) for osteoregeneration and chitosan(Cs)/polyvinylalcohol(PVA) for chondral regeneration are introduced. This scaffold is fabricated by electrospinning technique using spring as collector to create 3D-nanofibrous scaffolds. Fourier-transform infrared spectroscopy, X-ray diffraction, energy dispersive X-ray spectroscopy, scanning electron microscopy, mechanical compression test, porosimetry, and water uptake studies were applied to study each layer's physicochemical properties and whole functionally graded scaffold. Besides, biodegradation and biological studies were done to investigate biological performance of scaffold. Results showed that each layer has a fibrous structure with continuous nanofibers with improved pore size and porosity of novel 3D scaffold (6-13 μm and 90%) compared with two-dimensional (2D) mat (2.2 μm and 19.3%) with higher water uptake capacity (about 100 times of 2D mat). Compression modulus of electrospun scaffold was increased to 78 MPa by adding nHA. The biological studies revealed that the layer designed for osteoregeneration could improve cell proliferation rate in comparison to the layer designed for chondral regeneration. These results showed such structure possesses a promising potential for the treatment of osteochondral defects.
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Affiliation(s)
- Fatemeh Hejazi
- Faculty of Advanced Technologies, Shiraz University, Shiraz, Iran
| | | | - Nafiseh Olov
- Polymer and Color Engineering Department, Amirkabir University of Technology, Tehran, Iran
| | - Darya Zeini
- Faculty of Medicine, Institute of basic medical sciences, Oslo, Norway
| | - Atefeh Solouk
- Biomedical Engineering Department, Amirkabir University of Technology, Tehran, Iran
| | - Hamid Mirzadeh
- Polymer and Color Engineering Department, Amirkabir University of Technology, Tehran, Iran
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11
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Du Z, Feng X, Cao G, She Z, Tan R, Aifantis KE, Zhang R, Li X. The effect of carbon nanotubes on osteogenic functions of adipose-derived mesenchymal stem cells in vitro and bone formation in vivo compared with that of nano-hydroxyapatite and the possible mechanism. Bioact Mater 2021; 6:333-345. [PMID: 32954052 PMCID: PMC7479260 DOI: 10.1016/j.bioactmat.2020.08.015] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 08/08/2020] [Accepted: 08/17/2020] [Indexed: 12/11/2022] Open
Abstract
It has been well recognized that the development and use of artificial materials with high osteogenic ability is one of the most promising means to replace bone grafting that has exhibited various negative effects. The biomimetic features and unique physiochemical properties of nanomaterials play important roles in stimulating cellular functions and guiding tissue regeneration. But efficacy degree of some nanomaterials to promote specific tissue formation is still not clear. We hereby comparatively studied the osteogenic ability of our treated multi-walled carbon nanotubes (MCNTs) and the main inorganic mineral component of natural bone, nano-hydroxyapatite (nHA) in the same system, and tried to tell the related mechanism. In vitro culture of human adipose-derived mesenchymal stem cells (HASCs) on the MCNTs and nHA demonstrated that although there was no significant difference in the cell adhesion amount between on the MCNTs and nHA, the cell attachment strength and proliferation on the MCNTs were better. Most importantly, the MCNTs could induce osteogenic differentiation of the HASCs better than the nHA, the possible mechanism of which was found to be that the MCNTs could activate Notch involved signaling pathways by concentrating more proteins, including specific bone-inducing ones. Moreover, the MCNTs could induce ectopic bone formation in vivo while the nHA could not, which might be because MCNTs could stimulate inducible cells in tissues to form inductive bone better than nHA by concentrating more proteins including specific bone-inducing ones secreted from M2 macrophages. Therefore, MCNTs might be more effective materials for accelerating bone formation even than nHA.
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Affiliation(s)
- Zhipo Du
- Department of Orthopedics, The Fourth Central Hospital of Baoding City, Baoding, 072350, China
| | - Xinxing Feng
- Endocrinology and Cardiovascular Disease Centre, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100037, China
| | - Guangxiu Cao
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, China
- Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing, 100083, China
| | - Zhending She
- Guangdong Engineering Research Center of Implantable Medical Polymer, Shenzhen Lando Biomaterials Co., Ltd., Shenzhen, 518107, China
| | - Rongwei Tan
- Guangdong Engineering Research Center of Implantable Medical Polymer, Shenzhen Lando Biomaterials Co., Ltd., Shenzhen, 518107, China
| | - Katerina E. Aifantis
- Department of Mechanical and Aerospace Engineering, University of Florida, Gainesville, FL, 32611, USA
| | - Ruihong Zhang
- Department of Research and Teaching, The Fourth Central Hospital of Baoding City, Baoding, 072350, China
| | - Xiaoming Li
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, China
- Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing, 100083, China
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12
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Zhang Y, Hu J. Robust Effects of Graphene Oxide on Polyurethane/Tourmaline Nanocomposite Fiber. Polymers (Basel) 2020; 13:E16. [PMID: 33374588 PMCID: PMC7793061 DOI: 10.3390/polym13010016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Revised: 12/14/2020] [Accepted: 12/15/2020] [Indexed: 11/16/2022] Open
Abstract
The use of energy therapy including tourmaline/negative ions has gained huge popularity due to their long-standing historical evidence in improving human health and the technology development. However, the limitations of tourmaline based polyurethane fibers including the unsatisfied mechanical properties and negative ions releasing performances hind their further applications for wearable energy therapy. In this study, graphene oxide was modified within the polyurethane/tourmaline nanocomposite and then the wet-spinning method was used to prepare the fibers. As expected, the results proved that polyurethane/tourmaline/graphene oxide fiber had enhanced Young's modulus (8.4 MPa) and tensile stain at break (335%). In addition, the number of released negative ions from polyurethane/tourmaline/graphene oxide fiber was significantly improved 17 times and 1.6 times more than that of neat polyurethane fiber and polyurethane/tourmaline fiber, respectively. Moreover, the releasing number of negative ions was significantly decreased after being applying voltage. We envision that the proposed polyurethane/tourmaline/graphene oxide fiber will provide valuable insights into the development of the wearable energy products.
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Affiliation(s)
- Yuanchi Zhang
- Centre for Translational Medicine Research & Development, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China;
| | - Jinlian Hu
- Department of Biomedical Engineering, City University of Hong Kong, Kowloon, Hong Kong 999077, China
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Shafeeq VH, Unnikrishnan G. Matrix-filler interactions and solvent sorption features of nanohydroxyapatite (nHA) embedded ethylene-co-vinyl acetate (EVA)-millable polyurethane (MPU) blends. Phys Chem Chem Phys 2020; 22:23627-23636. [PMID: 33048089 DOI: 10.1039/d0cp04275g] [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
We report the solvent sorption features and matrix filler interactions of nanohydroxyapatite (nHA) embedded ethylene-co-vinyl acetate (EVA)-millable polyurethane (MPU) blends, using toluene, xylene, and t-butylacetate as probe molecules. The EVA/MPU blends were initially loaded with different quantities of n-HA, and the interfacial interactions were evaluated through FTIR and XRD techniques. The modulation of solvent resistance was subsequently examined in terms of filler loading, temperature and molar volume of the probes. With an increase in the amount of nHA, the solvent resistance of the matrix has been found to be enhanced, with the mechanism of transport regularly deviating from the conventional Fickian mode normally followed by elastomer matrices. The Flory-Rehner equation was employed to compute the molecular mass between crosslinks (Mc) and the crosslink density (γ). The observed enhancement in the crosslink density and the degree of reinforcement has been attributed to the increased polar-polar interactions after nHA loading into the matrix. The experimentally obtained values of Mc have been compared with phantom and affine models, to identify the type of deformation happening under solvent stress. The reinforcement effect within the matrix, as a function of filler loading, has been verified by using the Kraus equation. The swelling resistance of the composites has also been verified in biological fluids in view of the possible biofield applications of the composites.
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Affiliation(s)
- V H Shafeeq
- Polymer Science and Technology Research Laboratory, Department of Chemistry, National Institute of Technology Calicut, Kerala 673607, India.
| | - G Unnikrishnan
- Polymer Science and Technology Research Laboratory, Department of Chemistry, National Institute of Technology Calicut, Kerala 673607, India.
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14
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Nasrollah SAS, Najmoddin N, Mohammadi M, Fayyaz A, Nyström B. Three dimensional polyurethane/ hydroxyapatite bioactive scaffolds: The role of hydroxyapatite on pore generation. J Appl Polym Sci 2020. [DOI: 10.1002/app.50017] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Seyyed Ahmad Seyyed Nasrollah
- Department of Biomedical Engineering, Science and research branch Islamic Azad University Tehran Iran
- Department of Biomedical Engineering Amirkabir University of Technology Tehran Iran
| | - Najmeh Najmoddin
- Department of Biomedical Engineering, Science and research branch Islamic Azad University Tehran Iran
| | - Mohsen Mohammadi
- Department of Polymer Engineering, Faculty of Engineering Qom University of Technology Qom Iran
| | - Abdolali Fayyaz
- Department of Materials Engineering, Science and research branch Islamic Azad University Tehran Iran
| | - Bo Nyström
- Department of Chemistry University of Oslo Oslo Norway
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15
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Huang K, Yang MS, Tang YJ, Ling SY, Pan F, Liu XD, Chen J. Porous shape memory scaffold of dextran and hydroxyapatite for minimum invasive implantation for bone tissue engineering applications. J Biomater Appl 2020; 35:823-837. [PMID: 32842853 DOI: 10.1177/0885328220950062] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Minimally invasive implantation of a porous scaffold of large volume into bone defect site remains a challenge. Scaffolds based on shape memory polymer (SMP) show potential to be delivered in the compact form via minimally invasive surgery. The present study chooses poly (ε-caprolactone)-diols (PCL-diols) as the SMP to cross-link carboxyl dextran via ester bonds together with particle leaching method to yield a porous SMP scaffold. The inner surfaces of porous SMP scaffold are then mineralized via in situ precipitation to yield mineralized porous SMP-hydroxyapatite (SMP-HA) scaffold. The porous SMP-HA scaffold possesses pore size of 400-500 μm, with HA particles uniformly distributed and orientationally aligned on the inner surfaces of scaffold. X-ray diffraction (XRD) and differential scanning calorimetry (DSC) are carried out to identify the HA deposition. The phase transition temperature of the scaffold is adjusted to 38°C via changing the dosage of PCL (molecule weight: 2800) to endow the scaffold with shape deformation and fixed properties, as well as well-performed shape recovery property under body temperature. Bone marrow mesenchymal stem cells (BMSCs) adhere on the inner surfaces of SMP-HA scaffold, exhibiting larger spreading area when compared to cells adhered on SMP scaffold without HA, promoting its osteogenesis. In vivo degradation showed that the scaffold degrades completely after 6 months post-implantation. At the same time, significant tissue and capillary invasion indicated that the present porous SMP-HA scaffold hold great promise towards bone tissue engineering applications.
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Affiliation(s)
- Kai Huang
- Shanghai Zhabei District Library, Shanghai, China
| | - Mo-Song Yang
- Shanghai Zhabei District Library, Shanghai, China
| | - Yu-Jun Tang
- Shanghai Zhabei District Library, Shanghai, China
| | | | - Feng Pan
- Shanghai Zhabei District Library, Shanghai, China
| | | | - Jun Chen
- Department of Orthopedic, Zhabei Central Hospital of Jin'an District, Shanghai, China
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16
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Nahavandizadeh N, Rezaei M. Preparation of Shape Memory Polyurethane/Hydroxyapatite Nanocomposite Scaffolds by Electrospinning Method and Investigation of Their Microstructure and Physical-Mechanical Properties. POLYM-PLAST TECH MAT 2020. [DOI: 10.1080/25740881.2020.1757105] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Nasim Nahavandizadeh
- Institute of Polymeric Materials, Sahand University of Technology, Tabriz, Iran
- Faculty of Polymer Engineering, Sahand University of Technology, Tabriz, Iran
| | - Mostafa Rezaei
- Institute of Polymeric Materials, Sahand University of Technology, Tabriz, Iran
- Faculty of Polymer Engineering, Sahand University of Technology, Tabriz, Iran
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17
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Zhou Z, Wang Y, Qian Y, Pan X, Zhu J, Zhang Z, Qian Z, Sun Z, Pi B. Cystine dimethyl ester cross-linked PEG-poly(urethane-urea)/nano-hydroxyapatite composited biomimetic scaffold for bone defect repair. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2019; 31:407-422. [PMID: 31747530 DOI: 10.1080/09205063.2019.1696004] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Polyurethane (PU) and polyurea (PUA) materials have shown significant potential for application in tissue repair. Herein, we design a glycerol ethoxylate (PEG)-based poly(urethane-urea) for bone tissue repair. The polymer precursor was prepared from the reaction of PEG and isophorone diisocyanate (IPDI). The cystine dimethyl ester was used as a cross-linker for the preparation of poly(urethane-urea) elastomers. The material was further strengthened by physical blending of nano-hydroxyapatite (nHA). The physical and biological properties of final material were evaluated by mechanical testing, scanning electron microscopy characterization, degradation tests, cell proliferation and cell differentiation assays. The obtained scaffolds showed good mechanical strength, excellent biocompatibility and osteogenic capability. All the evidences demonstrated that this type of materials has good prospects for bone tissue repair application.
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Affiliation(s)
- Zhangzhe Zhou
- The Department of Orthopedic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Yimeng Wang
- The Department of Orthopedic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Yuqing Qian
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, China
| | - Xiangqiang Pan
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, China
| | - Jian Zhu
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, China
| | - Zhengbiao Zhang
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, China
| | - Zhonglai Qian
- The Department of Orthopedic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Zhiyong Sun
- The Department of Orthopedic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Bin Pi
- The Department of Orthopedic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, China
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18
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Fathi-Achachelouei M, Knopf-Marques H, Ribeiro da Silva CE, Barthès J, Bat E, Tezcaner A, Vrana NE. Use of Nanoparticles in Tissue Engineering and Regenerative Medicine. Front Bioeng Biotechnol 2019; 7:113. [PMID: 31179276 PMCID: PMC6543169 DOI: 10.3389/fbioe.2019.00113] [Citation(s) in RCA: 139] [Impact Index Per Article: 27.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Accepted: 05/03/2019] [Indexed: 12/12/2022] Open
Abstract
Advances in nanoparticle (NP) production and demand for control over nanoscale systems have had significant impact on tissue engineering and regenerative medicine (TERM). NPs with low toxicity, contrasting agent properties, tailorable characteristics, targeted/stimuli-response delivery potential, and precise control over behavior (via external stimuli such as magnetic fields) have made it possible their use for improving engineered tissues and overcoming obstacles in TERM. Functional tissue and organ replacements require a high degree of spatial and temporal control over the biological events and also their real-time monitoring. Presentation and local delivery of bioactive (growth factors, chemokines, inhibitors, cytokines, genes etc.) and contrast agents in a controlled manner are important implements to exert control over and monitor the engineered tissues. This need resulted in utilization of NP based systems in tissue engineering scaffolds for delivery of multiple growth factors, for providing contrast for imaging and also for controlling properties of the scaffolds. Depending on the application, materials, as polymers, metals, ceramics and their different composites can be utilized for production of NPs. In this review, we will cover the use of NP systems in TERM and also provide an outlook for future potential use of such systems.
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Affiliation(s)
| | - Helena Knopf-Marques
- Inserm UMR 1121, 11 rue Humann, Strasbourg, France
- Protip Medical, 8 Place de l'Hôpital, Strasbourg, France
| | | | - Julien Barthès
- Protip Medical, 8 Place de l'Hôpital, Strasbourg, France
| | - Erhan Bat
- Department of Biomedical Engineering, Middle East Technical University, Ankara, Turkey
- Department of Chemical Engineering, Middle East Technical University, Ankara, Turkey
- Department of Biotechnology, Middle East Technical University, Ankara, Turkey
| | - Aysen Tezcaner
- Department of Biomedical Engineering, Middle East Technical University, Ankara, Turkey
- Department of Biotechnology, Middle East Technical University, Ankara, Turkey
- Department of Engineering Sciences, Middle East Technical University, Ankara, Turkey
- BIOMATEN, METU, Center of Excellence in Biomaterials and Tissue Engineering, Ankara, Turkey
| | - Nihal Engin Vrana
- Inserm UMR 1121, 11 rue Humann, Strasbourg, France
- Protip Medical, 8 Place de l'Hôpital, Strasbourg, France
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19
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Bow A, Newby S, Rifkin R, Jackson BK, Matavosian A, Griffin C, King W, Alghazali K, Mhannawee A, Berryhill SB, Morello R, Hecht S, Biris AS, Anderson DE, Bourdo SE, Dhar M. Evaluation of a Polyurethane Platform for Delivery of Nanohydroxyapatite and Decellularized Bone Particles in a Porous Three-Dimensional Scaffold. ACS APPLIED BIO MATERIALS 2019; 2:1815-1829. [DOI: 10.1021/acsabm.8b00670] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Austin Bow
- College of Veterinary Medicine, University of Tennessee, 2407 River Drive, Knoxville, Tennessee 37996, United States
| | - Steven Newby
- College of Veterinary Medicine, University of Tennessee, 2407 River Drive, Knoxville, Tennessee 37996, United States
| | - Rebecca Rifkin
- College of Veterinary Medicine, University of Tennessee, 2407 River Drive, Knoxville, Tennessee 37996, United States
| | - Bailey K. Jackson
- Center for Integrative Nanotechnology Sciences, University of Arkansas at Little Rock, 2801 South University Avenue, Little Rock, Arkansas 72204, United States
| | - Alicia Matavosian
- College of Veterinary Medicine, University of Tennessee, 2407 River Drive, Knoxville, Tennessee 37996, United States
| | - Christopher Griffin
- Center for Integrative Nanotechnology Sciences, University of Arkansas at Little Rock, 2801 South University Avenue, Little Rock, Arkansas 72204, United States
| | - William King
- Center for Integrative Nanotechnology Sciences, University of Arkansas at Little Rock, 2801 South University Avenue, Little Rock, Arkansas 72204, United States
| | - Karrer Alghazali
- Center for Integrative Nanotechnology Sciences, University of Arkansas at Little Rock, 2801 South University Avenue, Little Rock, Arkansas 72204, United States
| | - Anwer Mhannawee
- Center for Integrative Nanotechnology Sciences, University of Arkansas at Little Rock, 2801 South University Avenue, Little Rock, Arkansas 72204, United States
| | - Stuart B. Berryhill
- University of Arkansas for Medical Sciences, Little Rock, Arkansas 72205, United States
| | - Roy Morello
- University of Arkansas for Medical Sciences, Little Rock, Arkansas 72205, United States
| | - Silke Hecht
- College of Veterinary Medicine, University of Tennessee, 2407 River Drive, Knoxville, Tennessee 37996, United States
| | - Alexandru S. Biris
- Center for Integrative Nanotechnology Sciences, University of Arkansas at Little Rock, 2801 South University Avenue, Little Rock, Arkansas 72204, United States
| | - David E. Anderson
- College of Veterinary Medicine, University of Tennessee, 2407 River Drive, Knoxville, Tennessee 37996, United States
| | - Shawn E. Bourdo
- Center for Integrative Nanotechnology Sciences, University of Arkansas at Little Rock, 2801 South University Avenue, Little Rock, Arkansas 72204, United States
| | - Madhu Dhar
- College of Veterinary Medicine, University of Tennessee, 2407 River Drive, Knoxville, Tennessee 37996, United States
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20
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Zhang Y, Hu J, Zhao X, Xie R, Qin T, Ji F. Mechanically Robust Shape Memory Polyurethane Nanocomposites for Minimally Invasive Bone Repair. ACS APPLIED BIO MATERIALS 2019; 2:1056-1065. [PMID: 35021395 DOI: 10.1021/acsabm.8b00655] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Yuanchi Zhang
- Institute of Textiles and Clothing, The Hong Kong Polytechnic University, Hung Hom, Hong Kong 999077, China
| | - Jinlian Hu
- Institute of Textiles and Clothing, The Hong Kong Polytechnic University, Hung Hom, Hong Kong 999077, China
- Smart Biomaterial Research Center, The Hong Kong Polytechnic University, Shen Zhen Base, Hong Kong 999077, China
| | - Xin Zhao
- Department of Biomedical Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong 999077, China
| | - Ruiqi Xie
- Institute of Textiles and Clothing, The Hong Kong Polytechnic University, Hung Hom, Hong Kong 999077, China
| | - Tingwu Qin
- Institute of Stem Cell and Tissue Engineering, West China Hospital, Sichuan University, Chengdu 610065, China
| | - Fenglong Ji
- School of Textiles Materials and Engineering, Wuyi University, Jiangmen 529020, China
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21
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Luo Y, Li D, Zhao J, Yang Z, Kang P. In vivo evaluation of porous lithium-doped hydroxyapatite scaffolds for the treatment of bone defect. Biomed Mater Eng 2018; 29:699-721. [DOI: 10.3233/bme-181018] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Yue Luo
- , , Sichuan University, , People’s Republic of China
| | - Donghai Li
- , , Sichuan University, , People’s Republic of China
| | - Jinhai Zhao
- , , Sichuan University, , People’s Republic of China
| | - Zhouyuan Yang
- , , Sichuan University, , People’s Republic of China
| | - PengDe Kang
- , , Sichuan University, , People’s Republic of China
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22
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Uskoković V, Tang S, Wu VM. On Grounds of the Memory Effect in Amorphous and Crystalline Apatite: Kinetics of Crystallization and Biological Response. ACS APPLIED MATERIALS & INTERFACES 2018; 10:14491-14508. [PMID: 29625010 DOI: 10.1021/acsami.8b02520] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Memory effects, despite being intrinsic to biological systems, are rarely potentiated in biomaterials. By exploring the transition between amorphous calcium phosphate (ACP) and hydroxyapatite (HAp) from different empirical angles, here, we attempt to set the basis for elicitation of structural memory effects in CPs. Two CPs precipitated under different degrees of saturation (DS), yielding HAp at a low DS and ACP at a high DS, were shown to evolve into structures with a high level of crystallographic similarity after their prolonged aging in the solution and served as the basis for this study. Amorphous-to-crystalline transition was abrupt in both precipitates, indicating an autocatalytic process preceded by considerable nucleation lag times, but it was more dynamic and proceeded in multiple stages in the precipitate formed at a higher DS, involving a greater degree of lattice rearrangements. ACP was found to exist in one of the two stoichiometrically and crystallographically different forms, one of which, amounting to ≥60 wt %, resembled tricalcium phosphate and transformed to HAp through the surface dissolution/reprecipitation mechanism and the other one, amounting to ≤20 wt %, was apatitic, enabling the transformation of ACP to HAp via martensitic, bulk lattice reordering phenomena. Large density of stacking faults was responsible for the comparatively high lattice strain, the property to which biogenic apatite owes its ability to accommodate foreign ions and act as a mineral reservoir for the body. Being the precursor for biogenic apatite during biomineralization and a thermodynamically logical intermediate in the ripening of HAp per the Ostwald law of stages, ACP proved to be more prone to structural transformation than the final and the most stable of the CP phases in this sequence of events: HAp. Amorphized upon gelation, two CPs transformed into HAp, albeit at different rates, which were higher for the material that had been crystalline prior to amorphization than for the one that had initially been amorphous, indicating the presence of a definite memory effect. The two HAp powders with different histories of formation also elicited different biological responses, including a Runx2 transcription factor expression in MC3T3-E1 osteoblasts, cell uptake efficiency, and antibacterial activity, extending the memory effect in HAp to the biological domain. The biological response was typically indistinct between the final products and their respective precursors but markedly different between the two products obtained by following different formation paths, confirming the presence of the given memory effect. It is suggested that the key to explaining the difference in the response between the materials differing in their route of formation lies in the direct dependence between the DS at which precipitation occurs and the rate of exchange of hydrated ions and ionic clusters across the particle surface in contact with a solution.
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Affiliation(s)
- Vuk Uskoković
- Advanced Materials and Nanobiotechnology Laboratory, Department of Bioengineering , University of Illinois , 851 South Morgan Street , Chicago , Illinois 60607-7052 , United States
- Advanced Materials and Nanobiotechnology Laboratory, Department of Biomedical and Pharmaceutical Sciences, Center for Targeted Drug Delivery , Chapman University , 9401 Jeronimo Road , Irvine , California 92618-1908 , United States
| | - Sean Tang
- Advanced Materials and Nanobiotechnology Laboratory, Department of Biomedical and Pharmaceutical Sciences, Center for Targeted Drug Delivery , Chapman University , 9401 Jeronimo Road , Irvine , California 92618-1908 , United States
| | - Victoria M Wu
- Advanced Materials and Nanobiotechnology Laboratory, Department of Biomedical and Pharmaceutical Sciences, Center for Targeted Drug Delivery , Chapman University , 9401 Jeronimo Road , Irvine , California 92618-1908 , United States
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