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Nimmal Haribabu G, Basu B. Implementing Machine Learning approaches for accelerated prediction of bone strain in acetabulum of a hip joint. J Mech Behav Biomed Mater 2024; 153:106495. [PMID: 38460455 DOI: 10.1016/j.jmbbm.2024.106495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Revised: 02/10/2024] [Accepted: 03/01/2024] [Indexed: 03/11/2024]
Abstract
The Finite Element (FE) methods for biomechanical analysis involving implant design and subject parameters for musculoskeletal applications are extensively reported in literature. Such an approach is manually intensive and computationally expensive with longer simulations times. Although Artificial Intelligence (AI) based approaches are implemented to a limited extent in biomechanics, such approaches to predict bone strain in acetabulum of a hip joint, are hardly explored. In this context, the primary objective of this paper is to evaluate machine learning (ML) models in tandem with high-fidelity FEA data for the accelerated prediction of the biomechanical response in the acetabulum of the human hip joint, during the walking gait. The parameters used in the FEA study included the subject weight, number and distribution of fins on the periphery of the acetabular shell, bone condition and phases of the gait cycle. The biomechanical response has also been evaluated using three different acetabular liners, including pre-clinically validated HDPE-20% HA-20% Al2O3, highly-crosslinked ultrahigh molecular weight polyethylene (HC-UHMWPE) and ZrO2-toughened Al2O3 (ZTA). Such parametric variation in FEA analysis, involving 26 variables and a full factorial design resulted in 10,752 datasets for spatially varying bone strains. The bone condition, as opposed to subject weight, was found to play a statistically significant role in determining the strain response in the periprosthetic bone of the acetabulum. While utilising hyperparameter tuning, K-fold cross validation and statistical learning approaches, a number of ML models were trained on the FEA dataset, and the Random Forest model performed the best with a coefficient of determination (R2) value of 0.99/0.97 and Root Mean Square Error (RMSE) of 0.02/0.01 on the training/test dataset. Taken together, this study establishes the potential of ML approach as a fast surrogate of FEA for implant biomechanics analysis, in less than a minute.
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Affiliation(s)
- Gowtham Nimmal Haribabu
- Laboratory for Biomaterials Science and Translational Research, Materials Research Centre, Indian Institute of Science, Bangalore, 560012, India
| | - Bikramjit Basu
- Laboratory for Biomaterials Science and Translational Research, Materials Research Centre, Indian Institute of Science, Bangalore, 560012, India.
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Wu J, Wang C, Zhang S, Zhang L, Hao J, Jia Z, Zheng X, Lv Y, Fu S, Zhang G. Preparation and Properties of GO/ZnO/nHAp Composite Microsphere Bone Regeneration Material. MICROMACHINES 2024; 15:122. [PMID: 38258241 PMCID: PMC10820970 DOI: 10.3390/mi15010122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2023] [Revised: 01/04/2024] [Accepted: 01/08/2024] [Indexed: 01/24/2024]
Abstract
The purpose of this study is to explore the possibility of using graphene-zinc oxide-hydroxyapatite (GO/ZnO/nHAp) composite microspheres as bone regeneration materials by making use of the complementary advantages of nanocomposites, so as to provide reference for the clinical application of preventing and solving bacterial infection after implantation of synthetic materials. Firstly, GO/ZnO composites and hydroxyapatite nanoparticles were synthesized using the hydrothermal method, and then GO/ZnO/nHAp composite microspheres were prepared via high-temperature sintering. The graphene-zinc oxide-calcium phosphate composite microspheres were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), X-ray photoelectron spectroscopy (XPS), energy dispersion spectroscopy (EDS), water contact angle measurement, degradation and pH determination, and differential thermal analysis (DiamondTG/DTA). The biocompatibility, osteogenic activity, and antibacterial activity of GO/ZnO/nHAp composite microspheres were further studied. The results of the cell experiment and antibacterial experiment showed that 0.5% and 1% GO-ZnO-nHAp composite microspheres not only had good biocompatibility and osteogenic ability but also inhibited Escherichia coli and Staphylococcus aureus by more than 45% and 70%. Therefore, GO/ZnO/nHAp composite microspheres have good physical and chemical properties and show good osteogenic induction and antibacterial activity, and this material has the possibility of being used as a bone regeneration material.
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Affiliation(s)
- Jiang Wu
- School of Stomatology, Jiamusi University, Jiamusi 154007, China; (J.W.); (C.W.); (S.Z.); (L.Z.); (J.H.); (Z.J.); (X.Z.)
| | - Chunmei Wang
- School of Stomatology, Jiamusi University, Jiamusi 154007, China; (J.W.); (C.W.); (S.Z.); (L.Z.); (J.H.); (Z.J.); (X.Z.)
| | - Shuangsheng Zhang
- School of Stomatology, Jiamusi University, Jiamusi 154007, China; (J.W.); (C.W.); (S.Z.); (L.Z.); (J.H.); (Z.J.); (X.Z.)
| | - Ling Zhang
- School of Stomatology, Jiamusi University, Jiamusi 154007, China; (J.W.); (C.W.); (S.Z.); (L.Z.); (J.H.); (Z.J.); (X.Z.)
| | - Jingshun Hao
- School of Stomatology, Jiamusi University, Jiamusi 154007, China; (J.W.); (C.W.); (S.Z.); (L.Z.); (J.H.); (Z.J.); (X.Z.)
| | - Zijian Jia
- School of Stomatology, Jiamusi University, Jiamusi 154007, China; (J.W.); (C.W.); (S.Z.); (L.Z.); (J.H.); (Z.J.); (X.Z.)
| | - Xiaomei Zheng
- School of Stomatology, Jiamusi University, Jiamusi 154007, China; (J.W.); (C.W.); (S.Z.); (L.Z.); (J.H.); (Z.J.); (X.Z.)
| | - Yuguang Lv
- College of Pharmacy, Jiamusi University, Jiamusi 154007, China;
| | - Shuang Fu
- School of Stomatology, Jiamusi University, Jiamusi 154007, China; (J.W.); (C.W.); (S.Z.); (L.Z.); (J.H.); (Z.J.); (X.Z.)
| | - Guoliang Zhang
- School of Stomatology, Jiamusi University, Jiamusi 154007, China; (J.W.); (C.W.); (S.Z.); (L.Z.); (J.H.); (Z.J.); (X.Z.)
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Shuai C, Wang Z, Yang F, Zhang H, Liu J, Feng P. Laser additive manufacturing of shape memory biopolymer bone scaffold: 3D conductive network construction and electrically driven mechanism. J Adv Res 2023:S2090-1232(23)00370-3. [PMID: 38030127 DOI: 10.1016/j.jare.2023.11.031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 07/24/2023] [Accepted: 11/25/2023] [Indexed: 12/01/2023] Open
Abstract
INTRODUCTION The electro-actuated shape memory polymer scaffold has gained increasing attentions on the utilization of minimally invasive surgery for bone defect repair, which requires to construct an efficient conductive network to accomplish electrical-to-thermal conversion from conductive fillers to the entire matrix evenly. OBJECTIVES In this study, multiwall carbon nanotube (MWCNT) was convective self-assembled on the ZnO tetrapod (t-ZnO) template, where MWCNT was controlled to disperse uniformly and regulated to contact with each other effectively due to the immersion capillary force during the evaporation loss of the convective self-assembly process, leading to an interwoven layer on the t-ZnO surface. METHODS The prepared t-ZnO@MWCNT assembly was embedded in the poly(L-lactic acid)/thermoplastic polyurethane (PLLA/TPU) scaffold fabricated via selective laser sintering to construct a 3D conductive MWCNT network for improving the electro-actuated shape memory properties. RESULTS It was observed that the interconnected MWCNT formed a 3D conductive network in the matrix without significant aggregation, which boosted the electrical-to-thermal properties of the scaffold, and the scaffold containing t-ZnO@MWCNT assembly possessed better electro-actuated shape memory properties with shape fixity of 98.0% and shape recovery of 98.8%. CONCLUSION The scaffold exhibited improved electro-actuated shape memory properties and mechanical properties and the osteogenic inductivity was promoted with the combined effect of t-ZnO and electrical stimulation.
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Affiliation(s)
- Cijun Shuai
- State Key Laboratory of Precision Manufacturing for Extreme Service Performance, College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China; Institute of Additive Manufacturing, Jiangxi University of Science and Technology, Nanchang 330013, China
| | - Zhicheng Wang
- State Key Laboratory of Precision Manufacturing for Extreme Service Performance, College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China
| | - Feng Yang
- State Key Laboratory of Precision Manufacturing for Extreme Service Performance, College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China
| | - Haiyang Zhang
- State Key Laboratory of Precision Manufacturing for Extreme Service Performance, College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China
| | - Jinglin Liu
- State Key Laboratory of Precision Manufacturing for Extreme Service Performance, College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China.
| | - Pei Feng
- State Key Laboratory of Precision Manufacturing for Extreme Service Performance, College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China.
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Jiang Z, Gong Z, Song W, Wu P, Deng C, Chen Q, Yan T. A promising hydroxyapatite whisker with long-term and high-efficiency antibacterial performance and its potential application in implant. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.109860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Gong C, Gu Y, Wang X, Yi C. Oligomer Content Determines the Properties and Application of Polycaprolactone. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c00275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Caihong Gong
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, Hunan Normal University, Changsha 410081, Hunan, P. R. China
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, P. R. China
| | - Yu Gu
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, Hunan Normal University, Changsha 410081, Hunan, P. R. China
| | - Xi Wang
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, Hunan Normal University, Changsha 410081, Hunan, P. R. China
| | - Chunwang Yi
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, Hunan Normal University, Changsha 410081, Hunan, P. R. China
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Biocompatibility and Electrical Stimulation of Skeletal and Smooth Muscle Cells Cultured on Piezoelectric Nanogenerators. Int J Mol Sci 2021; 23:ijms23010432. [PMID: 35008860 PMCID: PMC8745485 DOI: 10.3390/ijms23010432] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Revised: 12/28/2021] [Accepted: 12/28/2021] [Indexed: 11/29/2022] Open
Abstract
Nanogenerators are interesting for biomedical applications, with a great potential for electrical stimulation of excitable cells. Piezoelectric ZnO nanosheets present unique properties for tissue engineering. In this study, nanogenerator arrays based on ZnO nanosheets are fabricated on transparent coverslips to analyse the biocompatibility and the electromechanical interaction with two types of muscle cells, smooth and skeletal. Both cell types adhere, proliferate and differentiate on the ZnO nanogenerators. Interestingly, the amount of Zn ions released over time from the nanogenerators does not interfere with cell viability and does not trigger the associated inflammatory response, which is not triggered by the nanogenerators themselves either. The local electric field generated by the electromechanical nanogenerator–cell interaction stimulates smooth muscle cells by increasing cytosolic calcium ions, whereas no stimulation effect is observed on skeletal muscle cells. The random orientation of the ZnO nanogenerators, avoiding an overall action potential aligned along the muscle fibre, is hypothesised to be the cause of the cell-type dependent response. This demonstrates the need of optimizing the nanogenerator morphology, orientation and distribution according to the potential biomedical use. Thus, this study demonstrates the cell-scale stimulation triggered by biocompatible piezoelectric nanogenerators without using an external source on smooth muscle cells, although it remarks the cell type-dependent response.
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Singh A, Dubey AK. Improved antibacterial and cellular response of electrets and piezobioceramics. J Biomater Appl 2021; 36:441-459. [PMID: 33599133 DOI: 10.1177/0885328221991965] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The bacterial contamination in implants has been recognized as one of the key issues in orthopedics. In this article, a new technique of electrical polarization of various non-piezoelectric and piezoelectric biocompatible ceramics has been explored to develop antibacterial implants. Optimally processed hydroxyapatite (HA), BaTiO3 (BT), CaTiO3 (CT), Na0.5K0.5NbO3 (NKN) and their composites have been used as model biomaterials to verify the concept. The phase evolution analyses and microstructural characterizations were performed for sintered samples. The samples were polarized at polarizing voltage and temperature of 20 kV and 500°C, respectively, for 30 min. The hydrophilicity of polarized surfaces was examined using deionized water and culture media. The polarization induced in-vitro antibacterial study was performed for both, gram positive and gram negative bacteria. The viability of Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli) bacteria reduces significantly on the polarized surfaces. In addition, the influence of polarization on antibacterial response has been explored via various mechanisms such as development of reactive oxygen species (ROS), catalase activity and lipoperoxidation. Furthermore, the cellular response of polarized surfaces was also examined using SaOS2 and MG-63 cells. The viability of SaOS2 and MG-63 cells was observed to increase significantly on negatively polarized surfaces. Overall, the surface treatment enhances the antibacterial response of HA, NKN, BT, CT and their composites surfaces with positive influence on cellular response.
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Affiliation(s)
- Angaraj Singh
- Department of Ceramic Engineering, Indian Institute of Technology (BHU), Varanasi, India
| | - Ashutosh Kumar Dubey
- Department of Ceramic Engineering, Indian Institute of Technology (BHU), Varanasi, India
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Singh A, Reshma K, Dubey AK. Combined effect of surface polarization and ZnO addition on antibacterial and cellular response of Hydroxyapatite-ZnO composites. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 107:110363. [DOI: 10.1016/j.msec.2019.110363] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Revised: 09/22/2019] [Accepted: 10/22/2019] [Indexed: 12/29/2022]
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Khader A, Arinzeh TL. Biodegradable zinc oxide composite scaffolds promote osteochondral differentiation of mesenchymal stem cells. Biotechnol Bioeng 2019; 117:194-209. [PMID: 31544962 DOI: 10.1002/bit.27173] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Revised: 08/26/2019] [Accepted: 09/16/2019] [Indexed: 02/06/2023]
Abstract
Osteoarthritis (OA) involves the degeneration of articular cartilage and subchondral bone. The capacity of articular cartilage to repair and regenerate is limited. A biodegradable, fibrous scaffold containing zinc oxide (ZnO) was fabricated and evaluated for osteochondral tissue engineering applications. ZnO has shown promise for a variety of biomedical applications but has had limited use in tissue engineering. Composite scaffolds consisted of ZnO nanoparticles embedded in slow degrading, polycaprolactone to allow for dissolution of zinc ions over time. Zinc has well-known insulin-mimetic properties and can be beneficial for cartilage and bone regeneration. Fibrous ZnO composite scaffolds, having varying concentrations of 1-10 wt.% ZnO, were fabricated using the electrospinning technique and evaluated for human mesenchymal stem cell (MSC) differentiation along chondrocyte and osteoblast lineages. Slow release of the zinc was observed for all ZnO composite scaffolds. MSC chondrogenic differentiation was promoted on low percentage ZnO composite scaffolds as indicated by the highest collagen type II production and expression of cartilage-specific genes, while osteogenic differentiation was promoted on high percentage ZnO composite scaffolds as indicated by the highest alkaline phosphatase activity, collagen production, and expression of bone-specific genes. This study demonstrates the feasibility of ZnO-containing composites as a potential scaffold for osteochondral tissue engineering.
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Affiliation(s)
- Ateka Khader
- Department of Biomedical Engineering, New Jersey Institute of Technology, Newark, New Jersey
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Synthesis and engineering of mesoporous ZnO@HAP heterostructure as a pH-sensitive nano-photosensitizer for chemo-photodynamic therapy of malignant tumor cells. J Drug Deliv Sci Technol 2019. [DOI: 10.1016/j.jddst.2019.101200] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Zhang C, Zhang D, Liu J, Wang J, Lu Y, Zheng J, Li B, Jia L. Functionalized MoS 2-erlotinib produces hyperthermia under NIR. J Nanobiotechnology 2019; 17:76. [PMID: 31217009 PMCID: PMC6582482 DOI: 10.1186/s12951-019-0508-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2019] [Accepted: 06/05/2019] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Molybdenum disulfide (MoS2) has been widely explored for biomedical applications due to its brilliant photothermal conversion ability. In this paper, we report a novel multifunctional MoS2-based drug delivery system (MoS2-SS-HA). By decorating MoS2 nanosheets with hyaluronic acid (HA), these functionalized MoS2 nanosheets have been developed as a tumor-targeting chemotherapeutic nanocarrier for near-infrared (NIR) photothermal-triggered drug delivery, facilitating the combination of chemotherapy and photothermal therapy into one system for cancer therapy. RESULTS The nanocomposites (MoS2-SS-HA) generated a uniform diameter (ca. 125 nm), exhibited great biocompatibility as well as high stability in physiological solutions, and could be loaded with the insoluble anti-cancer drug erlotinib (Er). The release of Er was greatly accelerated under near infrared laser (NIR) irradiation, showing that the composites can be used as responsive systems, with Er release controllable through NIR irradiation. MTT assays and confocal imaging results showed that the MoS2-based nanoplatform could selectively target and kill CD44-positive lung cancer cells, especially drug resistant cells (A549 and H1975). In vivo tumor ablation studies prove a better synergistic therapeutic effect of the joint treatment, compared with either chemotherapy or photothermal therapy alone. CONCLUSION The functionalized MoS2 nanoplatform developed in this work could be a potent system for targeted drug delivery and synergistic chemo-photothermal cancer therapy.
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Affiliation(s)
- Chen Zhang
- Institute of Oceanography, Minjiang University, Wucheng Building, 5FL, No.200 Xiyuangong Road, Fuzhou, 350108 Fujian China
| | - Doudou Zhang
- Cancer Metastasis Alert and Prevention Center, and Pharmaceutical Photocatalysis of State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fujian Provincial Key Laboratory of Cancer Metastasis Chemoprevention and Chemotherapy, Fuzhou University, Sunlight Building, 6FL; Science Park, Xueyuan Road, University Town, Fuzhou, 350116 Fujian China
| | - Jian Liu
- Cancer Metastasis Alert and Prevention Center, and Pharmaceutical Photocatalysis of State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fujian Provincial Key Laboratory of Cancer Metastasis Chemoprevention and Chemotherapy, Fuzhou University, Sunlight Building, 6FL; Science Park, Xueyuan Road, University Town, Fuzhou, 350116 Fujian China
| | - Jie Wang
- Institute of Oceanography, Minjiang University, Wucheng Building, 5FL, No.200 Xiyuangong Road, Fuzhou, 350108 Fujian China
- Cancer Metastasis Alert and Prevention Center, and Pharmaceutical Photocatalysis of State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fujian Provincial Key Laboratory of Cancer Metastasis Chemoprevention and Chemotherapy, Fuzhou University, Sunlight Building, 6FL; Science Park, Xueyuan Road, University Town, Fuzhou, 350116 Fujian China
| | - Yusheng Lu
- Institute of Oceanography, Minjiang University, Wucheng Building, 5FL, No.200 Xiyuangong Road, Fuzhou, 350108 Fujian China
- Cancer Metastasis Alert and Prevention Center, and Pharmaceutical Photocatalysis of State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fujian Provincial Key Laboratory of Cancer Metastasis Chemoprevention and Chemotherapy, Fuzhou University, Sunlight Building, 6FL; Science Park, Xueyuan Road, University Town, Fuzhou, 350116 Fujian China
| | - Junxia Zheng
- Cancer Metastasis Alert and Prevention Center, and Pharmaceutical Photocatalysis of State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fujian Provincial Key Laboratory of Cancer Metastasis Chemoprevention and Chemotherapy, Fuzhou University, Sunlight Building, 6FL; Science Park, Xueyuan Road, University Town, Fuzhou, 350116 Fujian China
| | - Bifei Li
- Cancer Metastasis Alert and Prevention Center, and Pharmaceutical Photocatalysis of State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fujian Provincial Key Laboratory of Cancer Metastasis Chemoprevention and Chemotherapy, Fuzhou University, Sunlight Building, 6FL; Science Park, Xueyuan Road, University Town, Fuzhou, 350116 Fujian China
| | - Lee Jia
- Institute of Oceanography, Minjiang University, Wucheng Building, 5FL, No.200 Xiyuangong Road, Fuzhou, 350108 Fujian China
- Cancer Metastasis Alert and Prevention Center, and Pharmaceutical Photocatalysis of State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fujian Provincial Key Laboratory of Cancer Metastasis Chemoprevention and Chemotherapy, Fuzhou University, Sunlight Building, 6FL; Science Park, Xueyuan Road, University Town, Fuzhou, 350116 Fujian China
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Costa J, Peixoto T, Ferreira A, Vaz F, Lopes MA. Development and characterization of ZnO piezoelectric thin films on polymeric substrates for tissue repair. J Biomed Mater Res A 2019; 107:2150-2159. [PMID: 31094062 DOI: 10.1002/jbm.a.36725] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2018] [Accepted: 05/13/2019] [Indexed: 12/18/2022]
Abstract
Currently available scaffolds for tissue repair have shown very limited success, so many efforts have being put in the development of novel functional materials capable of regulating cell behavior and enhance the tissue healing rate. Piezoelectric materials, as zinc oxide (ZnO), can be a very interesting solution for scaffold development, as they can deliver electrical signals to cells upon mechanical solicitation, allowing the development of suitable microenvironments for tissue repair. This way, it is reported the deposition of ZnO thin films on a polymer by direct current magnetron sputtering, under different conditions, in order to obtain a piezoelectric ZnO thin film with potential for tissue repair applications. The obtained ZnO thin films were characterized in terms of morphology, crystallography, electrical conductivity, transmittance, piezoelectricity, and adhesion quality. The deposition process resulted in uniform films, with a very good adhesion to the substrate. The different deposition conditions influenced the evolution of the crystalline domains and preferential growths and consequently, the electrical properties of the films. One of the conditions resulted in a thin film with a high piezoelectric coefficient and a conductor behavior, being considered the most promising to act as a bioactive coating.
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Affiliation(s)
- José Costa
- REQUIMTE/LAQV, Departamento de Engenharia Metalúrgica e de Materiais, Faculdade de Engenharia da Universidade do Porto, Porto, Portugal
| | - Tânia Peixoto
- REQUIMTE/LAQV, Departamento de Engenharia Metalúrgica e de Materiais, Faculdade de Engenharia da Universidade do Porto, Porto, Portugal
| | | | - Filipe Vaz
- Centro de Física, Universidade do Minho, Braga, Portugal
| | - Maria A Lopes
- REQUIMTE/LAQV, Departamento de Engenharia Metalúrgica e de Materiais, Faculdade de Engenharia da Universidade do Porto, Porto, Portugal
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Dine EJA, Ferjaoui Z, Roques-Carmes T, Schjen A, Meftah A, Hamieh T, Toufaily J, Schneider R, Gaffet E, Alem H. Efficient synthetic access to thermo-responsive core/shell nanoparticles. NANOTECHNOLOGY 2017; 28:125601. [PMID: 28145892 DOI: 10.1088/1361-6528/aa5d81] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Core/shell nanostructures based on silica, fluorescent ZnO quantum dots (QDs) and superparamagnetic Fe3O4 nanoparticles (NPs) were prepared and fully characterized by the combination of different techniques and the physical properties of the nanostructures were studied. We demonstrate the efficiency of the atom transfer radical polymerization with activators regenerated by electron transfer process to graft (co-)polymers of different structures and polarity at the surface of metal oxide NPs. The influence of the polymer chain configuration on the optical properties of the ZnO/polymer core/shell QDs was enlightened. Concerning the magnetic properties of the Fe3O4/polymer nanostructures, only the amount of the grafted polymer plays a role on the saturation magnetization of the NPs and no influence of the aggregation was evidenced. The simple and fast process described in this work is efficient for the grafting of copolymers from surfaces and the derived NPs display the combination of the physical properties of the core and the macromolecular behavior of the shell.
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Affiliation(s)
- Enaam Jamal Al Dine
- Institut Jean Lamour (IJL), UMR CNRS 7198, Université de Lorraine, Department N2EV, Parc de Saurupt CS50840 F-54011 Nancy, France. Laboratory of Materials, Catalysis, Environment and Analytical Methods, Faculty of Sciences I, Lebanese University, Campus Rafic Hariri, Beirut, Lebanon
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Boda SK, Basu B. Engineered biomaterial and biophysical stimulation as combinatorial strategies to address prosthetic infection by pathogenic bacteria. J Biomed Mater Res B Appl Biomater 2016; 105:2174-2190. [PMID: 27404048 DOI: 10.1002/jbm.b.33740] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Revised: 06/08/2016] [Accepted: 06/20/2016] [Indexed: 12/25/2022]
Abstract
A plethora of antimicrobial strategies are being developed to address prosthetic infection. The currently available methods for implant infection treatment include the use of antibiotics and revision surgery. Among the bacterial strains, Staphylococcus species pose significant challenges particularly, with regard to hospital acquired infections. In order to combat such life threatening infectious diseases, researchers have developed implantable biomaterials incorporating nanoparticles, antimicrobial reinforcements, surface coatings, slippery/non-adhesive and contact killing surfaces. This review discusses a few of the biomaterial and biophysical antimicrobial strategies, which are in the developmental stage and actively being pursued by several research groups. The clinical efficacy of biophysical stimulation methods such as ultrasound, electric and magnetic field treatments against prosthetic infection depends critically on the stimulation protocol and parameters of the treatment modality. A common thread among the three biophysical stimulation methods is the mechanism of bactericidal action, which is centered on biophysical rupture of bacterial membranes, the generation of reactive oxygen species (ROS) and bacterial membrane depolarization evoked by the interference of essential ion-transport. Although the extent of antimicrobial effect, normally achieved through biophysical stimulation protocol is insufficient to warrant therapeutic application, a combination of antibiotic/ROS inducing agents and biophysical stimulation methods can elicit a clinically relevant reduction in viable bacterial numbers. In this review, we present a detailed account of both the biomaterial and biophysical approaches for achieving maximum bacterial inactivation. Summarizing, the biophysical stimulation methods in a combinatorial manner with material based strategies can be a more potent solution to control bacterial infections. © 2016 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 105B: 2174-2190, 2017.
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Affiliation(s)
- Sunil Kumar Boda
- Laboratory for Biomaterials, Materials Research Centre, Indian Institute of Science, Bangalore, 560012, India
| | - Bikramjit Basu
- Laboratory for Biomaterials, Materials Research Centre, Indian Institute of Science, Bangalore, 560012, India.,Centre for Biosystems Science and Engineering, Indian Institute of Science, Bangalore, 560012, India
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Barcellos DC, Fonseca BM, Pucci CR, Cavalcanti BDN, Persici EDS, Gonçalves SEDP. Zn-doped etch-and-rinse model dentin adhesives: Dentin bond integrity, biocompatibility, and properties. Dent Mater 2016; 32:940-50. [DOI: 10.1016/j.dental.2016.04.003] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2015] [Revised: 04/15/2016] [Accepted: 04/23/2016] [Indexed: 11/25/2022]
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17
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D'Souza S, Ogbodu R, Nyokong T. The effects of gold coated and uncoated zinc oxide nanohexagons on the photophysicochemical properties of the low symmetry zinc phthalocyanine. J Mol Struct 2015. [DOI: 10.1016/j.molstruc.2015.06.088] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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18
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Wang Y, Yuan Y, Cheng X, Li X, Zang J, Lu J, Yu Y, Xu X. Inhibiting the oxidation of diamond during preparing the vitrified dental grinding tools by depositing a ZnO coating using direct urea precipitation method. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 53:23-8. [PMID: 26042686 DOI: 10.1016/j.msec.2015.04.017] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2014] [Revised: 02/28/2015] [Accepted: 04/10/2015] [Indexed: 11/25/2022]
Abstract
Oxidation of diamond during the manufacturing of vitrified dental grinding tools would reduce the strength and sharpness of tools. Zinc oxide (ZnO) coating was deposited on diamond particles by urea precipitation method to protect diamond in borosilicate glass. The FESEM results showed that the ZnO coating was formed by plate-shaped particles. According to the TG results, the onset oxidation temperature of the ZnO-coated diamond was about 70 °C higher than the pristine diamond. The EDS results showed that ZnO diffused into the borosilicate glass during sintering. As the result, the bending strength of the composites containing ZnO-coated diamond was increased by 24% compared to that of the composites containing pristine diamond.
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Affiliation(s)
- Yanhui Wang
- State Key Laboratory of Metastable Materials Science and Technology, College of Materials Science and Engineering, Yanshan University, Qinhuangdao 066004, PR China
| | - Yungang Yuan
- State Key Laboratory of Metastable Materials Science and Technology, College of Materials Science and Engineering, Yanshan University, Qinhuangdao 066004, PR China
| | - Xiaozhe Cheng
- State Key Laboratory of Metastable Materials Science and Technology, College of Materials Science and Engineering, Yanshan University, Qinhuangdao 066004, PR China
| | - Xiaohu Li
- State Key Laboratory of Metastable Materials Science and Technology, College of Materials Science and Engineering, Yanshan University, Qinhuangdao 066004, PR China
| | - Jianbing Zang
- State Key Laboratory of Metastable Materials Science and Technology, College of Materials Science and Engineering, Yanshan University, Qinhuangdao 066004, PR China.
| | - Jing Lu
- The Ministry of Education Research Center for Machining of Brittle Materials, Huaqiao University, Xiamen 361021, PR China
| | - Yiqing Yu
- The Ministry of Education Research Center for Machining of Brittle Materials, Huaqiao University, Xiamen 361021, PR China
| | - Xipeng Xu
- The Ministry of Education Research Center for Machining of Brittle Materials, Huaqiao University, Xiamen 361021, PR China.
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19
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Suslu A, Albayrak AZ, Urkmez AS, Bayir E, Cocen U. Effect of surfactant types on the biocompatibility of electrospun HAp/PHBV composite nanofibers. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2014; 25:2677-2689. [PMID: 25091188 DOI: 10.1007/s10856-014-5286-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2013] [Accepted: 07/21/2014] [Indexed: 06/03/2023]
Abstract
Bone tissue engineering literature conveys investigations regarding biodegradable polymers where bioactive inorganic materials are added either before or after electrospinning process. The goal is to mimic the composition of bone and enhance the biocompatibility of the materials. Yet, most polymeric materials are hydrophobic in nature; therefore, their surfaces are not favorable for human cellular adhesion. In this sense, modifications of the hydrophobic surface of electrospun polymer fibers with hydrophilic and bioactive nanoparticles are beneficial. In this work, dispersion of hydroxyapatite (HAp), which is similar to the mineral component of natural bone, within biodegradable and biocompatible polymer poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) with the aid of a surfactant has been investigated. Non-ionic TWEEN20 and 12-hydroxysteric acid (HSA), cationic dodecyl trimethyl ammonium bromide (DTAB) and anionic sodium deoxycholate and sodium dodecyl sulfate (SDS) surfactants were used for comparison in order to prepare stable and homogenous nanocomposite suspensions of HAp/PHBV for the electrospinning process. Continuous and uniform composite nanofibers were generated successfully within a diameter range of 400-1,000 nm by the mediation of all surfactant types. Results showed that incorporation of HAp and any of the surfactant types strongly activates the precipitation rate of the apatite-like particles and decreases percent crystallinity of the HAp/PHBV mats. Mineralization was greatly enhanced on the fibers produced by using DTAB, HSA, and especially SDS on where also osteoblastic metabolic activity was similarly increased. The produced HAp/PHBV nanofibrous composite scaffolds would be a promising candidate as an osteoconductive bioceramic/polymer composite material for tissue engineering applications.
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Affiliation(s)
- A Suslu
- Metallurgical and Materials Engineering Department, Dokuz Eylul University, Izmir, Turkey
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20
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Gopi D, Murugan N, Ramya S, Kavitha L. Electrodeposition of a porous strontium-substituted hydroxyapatite/zinc oxide duplex layer on AZ91 magnesium alloy for orthopedic applications. J Mater Chem B 2014; 2:5531-5540. [PMID: 32262186 DOI: 10.1039/c4tb00960f] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Magnesium alloy is a potential biomedical implant because of its outstanding biodegradability and mechanical properties. But the poor corrosion resistance of AZ91 magnesium alloy in physiological solution limits its biomedical applications. In order to improve the corrosion resistance and biological performance of AZ91 magnesium alloy, we have fabricated a strontium-substituted porous hydroxyapatite (Sr-HAP)/zinc oxide (ZnO) duplex layer on AZ91 magnesium alloy by electrodeposition. The porous Sr-HAP/ZnO duplex-layer coating on AZ91 magnesium alloy was characterized by Fourier transform infrared spectroscopy, X-ray diffraction, high-resolution scanning electron microscopy and energy dispersive X-ray analysis. Also, the mechanical properties of the duplex-layer coating were evaluated using adhesion and Vickers micro-hardness tests. The effects of the duplex-layer coating on the corrosion behavior of AZ91 magnesium alloy were also investigated in simulated body fluid using electrochemical studies. The potentiodynamic polarization and electrochemical impedance spectroscopy results indicated that the corrosion resistance of AZ91 magnesium alloy was significantly improved by the duplex-layer coating. The in vitro cell-material interaction of the duplex-layer coating was observed with human osteosarcoma MG63 cells for cell viability at 1, 4 and 7 days of incubation and the coating exhibited good biocompatibility. Hence, from the obtained results we believe that the duplex-layer made of ZnO together with porous Sr-HAP on AZ91 magnesium alloy could provide effective corrosion protection and enhanced bioactivity. Thus, duplex-layer-coated AZ91 magnesium alloy can serve as a promising candidate for orthopedic applications.
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Affiliation(s)
- D Gopi
- Department of Chemistry, Periyar University, Salem 636 011, Tamilnadu, India.
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21
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Memarzadeh K, Sharili AS, Huang J, Rawlinson SCF, Allaker RP. Nanoparticulate zinc oxide as a coating material for orthopedic and dental implants. J Biomed Mater Res A 2014; 103:981-9. [PMID: 24862288 DOI: 10.1002/jbm.a.35241] [Citation(s) in RCA: 87] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2014] [Revised: 05/18/2014] [Accepted: 05/23/2014] [Indexed: 11/10/2022]
Abstract
Orthopedic and dental implants are prone to infection. In this study, we describe a novel system using zinc oxide nanoparticles (nZnO) as a coating material to inhibit bacterial adhesion and promote osteoblast growth. Electrohydrodynamic atomisation (EHDA) was employed to deposit mixtures of nZnO and nanohydroxyapatite (nHA) onto the surface of glass substrates. Nano-coated substrates were exposed to Staphylococcus aureus suspended in buffered saline or bovine serum to determine antimicrobial activity. Our results indicate that 100% nZnO and 75% nZnO/25% nHA composite-coated substrates have significant antimicrobial activity. Furthermore, osteoblast function was explored by exposing cells to nZnO. UMR-106 cells exposed to nZnO supernatants showed minimal toxicity. Similarly, MG-63 cells cultured on nZnO substrates did not show release of TNF-α and IL-6 cytokines. These results were reinforced by both proliferation and differentiation studies which revealed that a substrate coated with exclusively nZnO is more efficient than composite surface coatings. Finally, electron and light microscopy, together with immunofluorescence staining, revealed that all cell types tested, including human mesenchymal cell (hMSC), were able to maintain normal cell morphology when adhered onto the surface of the nano-coated substrates. Collectively, these findings indicate that nZnO can, on its own, provide an optimal coating for future bone implants that are both antimicrobial and biocompatible.
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Affiliation(s)
- Kaveh Memarzadeh
- Queen Mary, University of London, Barts and The London School of Medicine and Dentistry, Institute of Dentistry, 4 Newark Street, London, E1 2AT, United Kingdom; Department of Mechanical Engineering, University College London, Torrington Place, London, WC1E 7JE, United Kingdom
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22
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Patntirapong S, Singhatanadgit W, Meesap P, Theerathanagorn T, Toso M, Janvikul W. Stem cell adhesion and proliferation on hydrolyzed poly(butylene succinate)/β-tricalcium phosphate composites. J Biomed Mater Res A 2014; 103:658-70. [PMID: 24788123 DOI: 10.1002/jbm.a.35214] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2013] [Revised: 03/25/2014] [Accepted: 04/28/2014] [Indexed: 11/07/2022]
Abstract
Although poly(butylene succinate)/β-tricalcium phosphate (PBSu/TCP) composites are biocompatible and allow the growth and osteogenic differentiation of stem cells, cell attachment and adhesion to the PBSu-based substrates is often limited. To enhance cell adhesion and proliferation, we used a sodium hydroxide (NaOH) hydrolysis technique to generate a different degree of roughness on PBSu/TCP substrates with different PBSu:TCP ratios. The results showed that NaOH hydrolysis increased surface roughness of PBSu/TCP substrates in a concentration-dependent manner. Substrates with higher ratios of TCP:PBSu provided more porous topography after NaOH hydrolysis, with a substrate containing 40 wt % TCP (PBSu/TCP-6040) hydrolyzed with 1.5M NaOH (HPBSu/TCP-6040-1.5) showing the highest degree of roughness. As with the roughness, PBSu/TCP surface hydrophilicity was positively affected by the increasing NaOH concentration and TCP incorporation. Stem cells adhered best on HPBSu/TCP-6040-1.5 with three-dimensionally elongated cell extensions. Moreover, the HPBSu/TCP-6040-1.5 substrate most significantly facilitated stem cell actin cytoskeleton reorganization and vinculin-positive focal adhesion formation when compared with the other substrates tested. HPBSu/TCP-6040-1.5 also demonstrated the greatest increase in cell proliferation when compared with the other substrates studied. In conclusion, the results have shown that among various substrates tested, HPBSu/TCP-6040-1.5 provided the best support for stem cell adhesion and proliferation, suggesting its potential use in bone engineering.
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23
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Hydroxyapatite-titanium bulk composites for bone tissue engineering applications. J Biomed Mater Res A 2014; 103:791-806. [DOI: 10.1002/jbm.a.35198] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2013] [Revised: 04/09/2014] [Accepted: 04/10/2014] [Indexed: 11/07/2022]
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24
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Thrivikraman G, Madras G, Basu B. In vitro/In vivo assessment and mechanisms of toxicity of bioceramic materials and its wear particulates. RSC Adv 2014. [DOI: 10.1039/c3ra44483j] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
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25
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Sousa CJA, Pereira MC, Almeida RJ, Loyola AM, Silva ACA, Dantas NO. Synthesis and characterization of zinc oxide nanocrystals and histologic evaluation of their biocompatibility by means of intraosseous implants. Int Endod J 2013; 47:416-24. [DOI: 10.1111/iej.12164] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2013] [Accepted: 07/03/2013] [Indexed: 02/01/2023]
Affiliation(s)
- C. J. A. Sousa
- Department of Endodontics; School of Dentistry; Uberlandia MG Brazil
| | - M. C. Pereira
- Department of Endodontics; School of Dentistry; Uberlandia MG Brazil
| | - R. J. Almeida
- Department of Endodontics; School of Dentistry; Uberlandia MG Brazil
| | - A. M. Loyola
- Department of Pathology; Laboratory of Oral and Maxillofacial Pathology; School of Dentistry; Uberlandia MG Brazil
| | - A. C. A. Silva
- Laboratório de Novos Materiais Isolantes e Semicondutores (LNMIS); Institute of Physics; Federal University of Uberlandia; Uberlandia MG Brazil
| | - N. O. Dantas
- Laboratório de Novos Materiais Isolantes e Semicondutores (LNMIS); Institute of Physics; Federal University of Uberlandia; Uberlandia MG Brazil
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26
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27
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Mitra J, Tripathi G, Sharma A, Basu B. Scaffolds for bone tissue engineering: role of surface patterning on osteoblast response. RSC Adv 2013. [DOI: 10.1039/c3ra23315d] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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28
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Bajpai I, Saha N, Basu B. Moderate intensity static magnetic field has bactericidal effect on E. coli and S. epidermidis on sintered hydroxyapatite. J Biomed Mater Res B Appl Biomater 2012; 100:1206-17. [DOI: 10.1002/jbm.b.32685] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2011] [Revised: 10/18/2011] [Accepted: 11/13/2011] [Indexed: 01/18/2023]
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