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Yu S, Liu L, Xu C, Dai H. Magnesium phosphate based cement with improved setting, strength and cytocompatibility properties by adding Ca(H2PO4)2·H2O and citric acid. J Mech Behav Biomed Mater 2019; 91:229-236. [DOI: 10.1016/j.jmbbm.2018.12.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Revised: 12/06/2018] [Accepted: 12/07/2018] [Indexed: 10/27/2022]
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Cheng J, Liu H, Zhao B, Shen R, Liu D, Hong J, Wei H, Xi P, Chen F, Bai D. MC3T3-E1 preosteoblast cell-mediated mineralization of hydroxyapatite by poly-dopamine-functionalized graphene oxide. J BIOACT COMPAT POL 2015. [DOI: 10.1177/0883911515569918] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
We report a biomimetic mineralization of hydroxyapatite induced by poly-dopamine-functionalized reduced graphene oxide (RGO-PDA). Graphene oxide was first simultaneously reduced and surface functionalized by one-step oxidative polymerization of dopamine. The resultant RGO-PDA was further used as a bioinspired surface to mimic the mineralization of hydroxyapatite during bone formation. MC3T3-E1 cells were cultured on the RGO-PDA substrates to observe various cellular activities and hydroxyapatite mineralization. The MC3T3-E1 cells on RGO-PDA substrates show higher cellular activities such as proliferation, adhesion, and osteogenic differentiation over the bare glass and graphene oxide substrates. Those results suggest the potentials of using RGO-PDA as osteogenesis-promoting scaffolds for successful applications in bone tissue regeneration.
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Affiliation(s)
- Ju Cheng
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China
- Institute of Operative Surgery, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China
| | - Hongyan Liu
- Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province, The Research Center of Biomedical Nanotechnology, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, China
| | - Bingjiang Zhao
- Institute of Operative Surgery, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China
| | - Rong Shen
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China
| | - Di Liu
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China
| | - Jinpeng Hong
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China
| | - Hui Wei
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China
| | - Pinxian Xi
- Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province, The Research Center of Biomedical Nanotechnology, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, China
| | - Fengjuan Chen
- Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province, The Research Center of Biomedical Nanotechnology, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, China
| | - Decheng Bai
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China
- Institute of Operative Surgery, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China
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Abstract
The need for bone repair has increased as the population ages. However, currently, the bone grafts still have some disadvantages, such as low compressive strength and porosity, which limit their use. In order to solve these disadvantages, in this study, the porous beta-tricalcium phosphate (β-TCP) anorganic bone graft were prepared from healthy bovine cancellous bone by cell-free, defat and twice calcinations. X-ray diffraction (XRD) was used to investigate the chemical composition of the bone graft. And the morphology, porosity and mechanical strength of the bone graft were also evaluated. The results showed that most constituent of the bone graft was β-TCP. In addition, the bone graft scaffold exhibited the macro and micro porous structure and the porosity was 57.63%, just as the nature cancellous bone. The compressive strength was 4.47±0.63MPa. Above all, the porous β-TCP anorganic bone graft not only has similar chemical composites as the nature cancellous bone, but also it can effectively retain the porous structure of natural cancellous bone and provides optimal channels for the ingrowth of new bone and blood vessels.Therefore, the porous β-TCP anorganic bone graft is a potential biomaterial in bone tissue engineering.
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Mao K, Yang Y, Li J, Hao L, Tang P, Wang Z, Wen N, Du M, Wang J, Wang Y. Investigation of the histology and interfacial bonding between carbonated hydroxyapatite cement and bone. Biomed Mater 2009; 4:045003. [DOI: 10.1088/1748-6041/4/4/045003] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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