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Yuan X, Xu Y, Lu T, He F, Zhang L, He Q, Ye J. Enhancing the bioactivity of hydroxyapatite bioceramic via encapsulating with silica-based bioactive glass sol. J Mech Behav Biomed Mater 2022; 128:105104. [DOI: 10.1016/j.jmbbm.2022.105104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Revised: 01/17/2022] [Accepted: 01/23/2022] [Indexed: 10/19/2022]
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2
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Liu M, Wu X, Cui Y, Liu P, Xiao B, Zhang X, Zhang J, Sun Z, Song M, Shao B, Li Y. Mitophagy and apoptosis mediated by ROS participate in AlCl 3-induced MC3T3-E1 cell dysfunction. Food Chem Toxicol 2021; 155:112388. [PMID: 34242719 DOI: 10.1016/j.fct.2021.112388] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Revised: 07/02/2021] [Accepted: 07/05/2021] [Indexed: 02/08/2023]
Abstract
Aluminum (Al), as a common environmental pollutant, causes osteoblast (OB) dysfunction and then leads to Al-related bone diseases (ARBD). One of the mechanisms of ARBD is oxidative stress, which leads to an increase in the production of reactive oxygen species (ROS). ROS can induce mitochondrial damage, thereby inducing mitophagy and apoptosis. But whether mitophagy and apoptosis mediated by ROS, and the role of ROS in AlCl3-induced MC3T3-E1 cell dysfunction is still unclear. In this study, MC3T3-E1 cells used 0 mM Al (control group), 2 mM Al (Al group), 5 mM N-acetyl cysteine (NAC) (NAC group), 2 mM Al and 5 mM NAC (Al + NAC group) for 24 h. We found AlCl3-induced MC3T3-E1 cell dysfunction accompanied by oxidative stress, apoptosis, and mitophagy. While NAC, a ROS scavenger treatment, restored cell function and alleviated the mitophagy and apoptosis. These results suggested that mitophagy and apoptosis mediated by ROS participate in AlCl3-induced MC3T3-E1 cell dysfunction.
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Affiliation(s)
- Menglin Liu
- Key Laboratory of the Provincial Education, Department of Heilongjiang for Common Animal Disease Prevention and Treatment, College of Veterinary Medicine, Northeast Agricultural. University, Harbin, 150030, Heilongjiang, China
| | - Xia Wu
- College of Food Science, Northeast Agricultural. University, Harbin, 150030, Heilongjiang, China
| | - Yilong Cui
- Key Laboratory of the Provincial Education, Department of Heilongjiang for Common Animal Disease Prevention and Treatment, College of Veterinary Medicine, Northeast Agricultural. University, Harbin, 150030, Heilongjiang, China
| | - Pengli Liu
- Key Laboratory of the Provincial Education, Department of Heilongjiang for Common Animal Disease Prevention and Treatment, College of Veterinary Medicine, Northeast Agricultural. University, Harbin, 150030, Heilongjiang, China
| | - Bonan Xiao
- Key Laboratory of the Provincial Education, Department of Heilongjiang for Common Animal Disease Prevention and Treatment, College of Veterinary Medicine, Northeast Agricultural. University, Harbin, 150030, Heilongjiang, China
| | - Xuliang Zhang
- Key Laboratory of the Provincial Education, Department of Heilongjiang for Common Animal Disease Prevention and Treatment, College of Veterinary Medicine, Northeast Agricultural. University, Harbin, 150030, Heilongjiang, China
| | - Jian Zhang
- Key Laboratory of the Provincial Education, Department of Heilongjiang for Common Animal Disease Prevention and Treatment, College of Veterinary Medicine, Northeast Agricultural. University, Harbin, 150030, Heilongjiang, China
| | - Zhuo Sun
- Key Laboratory of the Provincial Education, Department of Heilongjiang for Common Animal Disease Prevention and Treatment, College of Veterinary Medicine, Northeast Agricultural. University, Harbin, 150030, Heilongjiang, China
| | - Miao Song
- Key Laboratory of the Provincial Education, Department of Heilongjiang for Common Animal Disease Prevention and Treatment, College of Veterinary Medicine, Northeast Agricultural. University, Harbin, 150030, Heilongjiang, China
| | - Bing Shao
- Key Laboratory of the Provincial Education, Department of Heilongjiang for Common Animal Disease Prevention and Treatment, College of Veterinary Medicine, Northeast Agricultural. University, Harbin, 150030, Heilongjiang, China
| | - Yanfei Li
- Key Laboratory of the Provincial Education, Department of Heilongjiang for Common Animal Disease Prevention and Treatment, College of Veterinary Medicine, Northeast Agricultural. University, Harbin, 150030, Heilongjiang, China.
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3
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Kuzmenka D, Sewohl C, König A, Flath T, Hahnel S, Schulze FP, Hacker MC, Schulz-Siegmund M. Sustained Calcium(II)-Release to Impart Bioactivity in Hybrid Glass Scaffolds for Bone Tissue Engineering. Pharmaceutics 2020; 12:E1192. [PMID: 33302527 PMCID: PMC7764395 DOI: 10.3390/pharmaceutics12121192] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 12/04/2020] [Accepted: 12/05/2020] [Indexed: 12/24/2022] Open
Abstract
In this study, we integrated different calcium sources into sol-gel hybrid glass scaffolds with the aim of producing implants with long-lasting calcium release while maintaining mechanical strength of the implant. Calcium(II)-release was used to introduce bioactivity to the material and eventually support implant integration into a bone tissue defect. Tetraethyl orthosilicate (TEOS) derived silica sols were cross-linked with an ethoxysilylated 4-armed macromer, pentaerythritol ethoxylate and processed into macroporous scaffolds with defined pore structure by indirect rapid prototyping. Triethyl phosphate (TEP) was shown to function as silica sol solvent. In a first approach, we investigated the integration of 1 to 10% CaCl2 in order to test the hypothesis that small CaCl2 amounts can be physically entrapped and slowly released from hybrid glass scaffolds. With 5 and 10% CaCl2 we observed an extensive burst release, whereas slightly improved release profiles were found for lower Calcium(II) contents. In contrast, introduction of melt-derived bioactive 45S5 glass microparticles (BG-MP) into the hybrid glass scaffolds as another Calcium(II) source led to an approximately linear release of Calcium(II) in Tris(hydroxymethyl)aminomethane (TRIS) buffer over 12 weeks. pH increase caused by BG-MP could be controlled by their amount integrated into the scaffolds. Compression strength remained unchanged compared to scaffolds without BG-MP. In cell culture medium as well as in simulated body fluid, we observed a rapid formation of a carbonated hydroxyapatite layer on BG-MP containing scaffolds. However, this mineral layer consumed the released Calcium(II) ions and prevented an additional increase in Calcium(II) concentration in the cell culture medium. Cell culture studies on the different scaffolds with osteoblast-like SaOS-2 cells as well as bone marrow derived mesenchymal stem cells (hMSC) did not show any advantages concerning osteogenic differentiation due to the integration of BG-MP into the scaffolds. Nonetheless, via the formation of a hydroxyapatite layer and the ability to control the pH increase, we speculate that implant integration in vivo and bone regeneration may benefit from this concept.
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Affiliation(s)
- Dzmitry Kuzmenka
- Pharmaceutical Technology, Institute of Pharmacy, Faculty of Medicine, Leipzig University, 04317 Leipzig, Germany; (D.K.); (C.S.); (M.C.H.)
| | - Claudia Sewohl
- Pharmaceutical Technology, Institute of Pharmacy, Faculty of Medicine, Leipzig University, 04317 Leipzig, Germany; (D.K.); (C.S.); (M.C.H.)
| | - Andreas König
- Department of Prosthetic Dentistry and Dental Materials Science, Leipzig University, 04103 Leipzig, Germany; (A.K.); (S.H.)
| | - Tobias Flath
- Department of Mechanical and Energy Engineering, University of Applied Sciences Leipzig, 04277 Leipzig, Germany; (T.F.); (F.P.S.)
| | - Sebastian Hahnel
- Department of Prosthetic Dentistry and Dental Materials Science, Leipzig University, 04103 Leipzig, Germany; (A.K.); (S.H.)
| | - Fritz Peter Schulze
- Department of Mechanical and Energy Engineering, University of Applied Sciences Leipzig, 04277 Leipzig, Germany; (T.F.); (F.P.S.)
| | - Michael C. Hacker
- Pharmaceutical Technology, Institute of Pharmacy, Faculty of Medicine, Leipzig University, 04317 Leipzig, Germany; (D.K.); (C.S.); (M.C.H.)
- Institute of Pharmaceutics and Biopharmaceutics, Heinrich Heine University Duesseldorf, 40225 Duesseldorf, Germany
| | - Michaela Schulz-Siegmund
- Pharmaceutical Technology, Institute of Pharmacy, Faculty of Medicine, Leipzig University, 04317 Leipzig, Germany; (D.K.); (C.S.); (M.C.H.)
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4
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Wang L, Yan J, Hu X, Zhu X, Hu S, Qian J, Zhang F, Liu M. Effect of nanoscale bioactive glass with radial spherical particles on osteogenic differentiation of rat bone marrow mesenchymal stem cells. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2020; 31:29. [PMID: 32140885 DOI: 10.1007/s10856-020-06368-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Accepted: 02/20/2020] [Indexed: 06/10/2023]
Abstract
To validate the feasibility of two types of bioactive glass that contains spherical and radical spherical nano-sized particles in promoting bone repair, we hypothesize that radical spherical nano-sized particles have higher bone repair effectiveness than spherical one due to the physicochemical properties. We rigorously compared the physicochemical properties and bioactivities of these two types of bioactive glass. Specifically, we measured the size, surface morphology, concentration of ionic-dissolution products, bioactivity, and biological effects of two groups of bioactive glass on rat bone marrow mesenchymal stem cells (rBMSCs) and evaluate their effect on proliferation and osteogenic differentiation of rBMSCs in vitro. We observed that spherical nano-bioactive glass (SNBG) was spherical with smooth boundary, while the radial spherical nano-bioactive glass (RSNBG) had radial pore on the surface of particle boundary. When the two materials were immersed in simulated body fluid for 24 h, RSNBG produced more and denser hydroxyapatite carbonate than SNBG. The concentration of Ca and Si ions in RSNBG 24 h extract is higher than that of SNBG, while the concentration of P ions is lower. Proliferation, alkaline phosphatase (ALP) activity, intracellular Ca ion concentrations defined as the number of mineralized nodules produced, and the expression of osteogenic genes were significantly higher in rBMSCs co-cultured with 50 µg/mL RSNBG than SNBG. Overall, these results validated our hypothesis that RSNBG can provide better benefit than SNBG for inducing proliferation and osteogenic differentiation in rBMSCs, in turn suggested the feasibility of this RSNBG in further studies and utilization toward the ends of improved bone repair effectiveness.
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Affiliation(s)
- Lili Wang
- Jiangsu Key Laboratory of Oral Diseases, Department of Prosthodontics, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, 210029, Jiangsu, China
| | - Jia Yan
- Jiangsu Key Laboratory of Oral Diseases, Department of Prosthodontics, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, 210029, Jiangsu, China
| | - Xiaokun Hu
- Jiangsu Key Laboratory of Oral Diseases, Department of Prosthodontics, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, 210029, Jiangsu, China
| | - Xinchen Zhu
- Jiangsu Key Laboratory of Oral Diseases, Department of Prosthodontics, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, 210029, Jiangsu, China
| | - Shuying Hu
- Jiangsu Key Laboratory of Oral Diseases, Department of Prosthodontics, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, 210029, Jiangsu, China
| | - Jun Qian
- Jiangsu Key Laboratory of Oral Diseases, Department of Prosthodontics, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, 210029, Jiangsu, China
| | - Feimin Zhang
- Jiangsu Key Laboratory of Oral Diseases, Department of Prosthodontics, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, 210029, Jiangsu, China.
| | - Mei Liu
- Jiangsu Key Laboratory of Oral Diseases, Department of Prosthodontics, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, 210029, Jiangsu, China.
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5
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The effects of morphology on physicochemical properties, bioactivity and biocompatibility of micro-/nano-bioactive glasses. ADV POWDER TECHNOL 2018. [DOI: 10.1016/j.apt.2018.04.017] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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6
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Ciraldo FE, Boccardi E, Melli V, Westhauser F, Boccaccini AR. Tackling bioactive glass excessive in vitro bioreactivity: Preconditioning approaches for cell culture tests. Acta Biomater 2018; 75:3-10. [PMID: 29772346 DOI: 10.1016/j.actbio.2018.05.019] [Citation(s) in RCA: 82] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Revised: 05/08/2018] [Accepted: 05/12/2018] [Indexed: 12/13/2022]
Abstract
Bioactive glasses (BGs) are being increasingly considered for biomedical applications in bone and soft tissue replacement approaches thanks to their ability to form strong bonding with tissues. However, due to their high reactivity once in contact with water-based solutions BGs rapidly exchange ions with the surrounding environment leading in most cases to an undesired increase of the pH under static in vitro conditions (due to alkaline ion "burst release"), making difficult or even impossible to perform cell culture studies. Several pre-conditioning treatments have been therefore proposed in laboratories worldwide to limit this problem. This paper presents an overview of the different strategies that have been put forward to pre-treat BG samples to tackle the pH raise issue in order to enable cell biology studies. The paper also discusses the relevant criteria that determine the selection of the optimal pre-treatment depending on the BG composition and morphology (e.g. particles, scaffolds). STATEMENT OF SIGNIFICANCE Bioactive glasses (BGs), since their discovery in 1971 by L.L Hench, have been widely used for bone replacement and repair, and, more recently, they are becoming highly attractive for bone and soft tissue engineering applications. BGs have in fact the ability to form a strong bond with both hard and soft tissues once in contact with biological fluid. The enhanced interaction of BGs with the biological environment is based on their significant surface bioreactivity. This surface effect of BGs is, on the other hand, problematic for cell biology studies by standard (static) cell culture methods: an excessive bioreactivity leads in most cases to a rapid and dramatic increase of the pH of the surrounding medium, which results in cell death and makes cell culture tests on BG samples impossible. The BG research community has been aware of this for many years and numerous pre-treatments have been proposed by different groups worldwide to limit this problem. For the first time, we have reviewed in this paper the variety of surface preconditioning treatments that have been put forward over the years, we provide a summary of such pre-treatments used in laboratory practice, discussing and offering criteria that can be used for the determination of the optimal pre-treatment depending on BG composition and morphology of the sample tested (bulk, particulate, scaffolds). The information and discussion provided in this review should support best research practice when testing bioactive glasses in cell culture.
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Affiliation(s)
- Francesca E Ciraldo
- Institute of Biomaterials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, 91058 Erlangen, Germany
| | - Elena Boccardi
- Institute of Biomaterials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, 91058 Erlangen, Germany
| | - Virginia Melli
- Department of Chemistry, Materials, and Chemical Engineering 'G. Natta'. Politecnico di Milano, Piazza L. Da Vinci 32, 20131 Milano, Italy
| | - Fabian Westhauser
- Centre of Orthopaedics, Traumatology, and Spinal Cord Injury, Heidelberg University Hospital, 69118 Heidelberg, Germany
| | - Aldo R Boccaccini
- Institute of Biomaterials, Department of Materials Science and Engineering, University of Erlangen-Nuremberg, 91058 Erlangen, Germany.
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7
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Bermúdez-Reyes B, del Refugio Lara-Banda M, Reyes-Zarate E, Rojas-Martínez A, Camacho A, Moncada-Saucedo N, Pérez-Silos V, García-Ruiz A, Guzmán-López A, Peña-Martínez V, Lara-Arias J, Torres-Méndez S, Fuentes-Mera L. Effect on growth and osteoblast mineralization of hydroxyapatite-zirconia (HA-ZrO
2
) obtained by a new low temperature system. Biomed Mater 2018; 13:035001. [DOI: 10.1088/1748-605x/aaa3a4] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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8
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The effects of Sr concentration on physicochemical properties, bioactivity and biocompatibility of sub-micron bioactive glasses spheres. ADV POWDER TECHNOL 2017. [DOI: 10.1016/j.apt.2017.07.024] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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9
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Natural and synthetic polymers/bioceramics/bioactive compounds-mediated cell signalling in bone tissue engineering. Int J Biol Macromol 2017; 110:88-96. [PMID: 28917940 DOI: 10.1016/j.ijbiomac.2017.09.029] [Citation(s) in RCA: 90] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Revised: 08/26/2017] [Accepted: 09/12/2017] [Indexed: 12/24/2022]
Abstract
Bone is a highly integrative and dynamic tissue of the human body. It is continually remodeled by bone cells such as osteoblasts, osteoclasts. When a fraction of a bone is damaged or deformed, stem cells and bone cells under the influence of several signaling pathways regulate bone regeneration at the particular locale. Effective therapies for bone defects can be met via bone tissue engineering which employs drug delivery systems with biomaterials to enhance cellular functions by acting on signaling pathways such as Wnt, BMP, TGF-β, and Notch. This review provides the current understanding of polymers/bioceramics/bioactive compounds as scaffolds in activation of signaling pathways for the formation of bone.
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10
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Song M, Huo H, Cao Z, Han Y, Gao L. Aluminum Trichloride Inhibits the Rat Osteoblasts Mineralization In Vitro. Biol Trace Elem Res 2017; 175:186-193. [PMID: 27260532 DOI: 10.1007/s12011-016-0761-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Accepted: 05/24/2016] [Indexed: 12/01/2022]
Abstract
Aluminum (Al) is an accumulative toxic metal. Excessive Al accumulation inhibits osteoblasts mineralization and induces osteoporosis. However, the inhibition mechanism of Al on the mineralization is not fully understood. Thus, in this study, the rat osteoblasts were cultured and exposed to 0 mmol L-1 (control group, CG) and 0.52 mmol L-1 aluminum trichloride (AlCl3, treatment group, TG) for 7, 14, and 21 days, respectively. We found that mineralized matrix nodules, the activity of bone alkaline phosphatase, the concentration of extracellular calcium, the mRNA expression of type-I collagen, the mRNA and protein expressions of osteopontin, osteocalcin, and bone sialoprotein were all decreased, while the concentration of extracellular phosphorus was increased in TG compared with CG with time prolonged. Taken together, these results indicated that AlCl3 inhibited osteoblasts mineralization in vitro.
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Affiliation(s)
- Miao Song
- College of Veterinary Medicine, Northeast Agricultural University, No. 59 Mucai Street, Xiangfang District, Harbin, 150030, China
| | - Hui Huo
- College of Veterinary Medicine, Northeast Agricultural University, No. 59 Mucai Street, Xiangfang District, Harbin, 150030, China
- College of Animal Science and Technology, Northeast Agricultural University, Harbin, 150030, China
| | - Zheng Cao
- College of Veterinary Medicine, Northeast Agricultural University, No. 59 Mucai Street, Xiangfang District, Harbin, 150030, China
| | - Yanfei Han
- College of Veterinary Medicine, Northeast Agricultural University, No. 59 Mucai Street, Xiangfang District, Harbin, 150030, China
| | - Li Gao
- College of Veterinary Medicine, Northeast Agricultural University, No. 59 Mucai Street, Xiangfang District, Harbin, 150030, China.
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11
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Gong W, Dong Y, Wang S, Gao X, Chen X. A novel nano-sized bioactive glass stimulates osteogenesis via the MAPK pathway. RSC Adv 2017. [DOI: 10.1039/c6ra26713k] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The effects of novel nano-sized 58S BG on osteogenic gene activation via the MAPK pathway are better than those of traditional 45S5 BG.
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Affiliation(s)
- Weiyu Gong
- Department of Cariology and Endodontology
- Peking University School and Hospital of Stomatology
- Beijing 100081
- China
| | - Yanmei Dong
- Department of Cariology and Endodontology
- Peking University School and Hospital of Stomatology
- Beijing 100081
- China
| | - Sainan Wang
- Department of Cariology and Endodontology
- Peking University School and Hospital of Stomatology
- Beijing 100081
- China
| | - Xuejun Gao
- Department of Cariology and Endodontology
- Peking University School and Hospital of Stomatology
- Beijing 100081
- China
| | - Xiaofeng Chen
- National Engineering Research Center for Human Tissue Restoration & Reconstruction
- South China University of Technology
- Guangzhou
- China
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12
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Kulanthaivel S, Roy B, Agarwal T, Giri S, Pramanik K, Pal K, Ray SS, Maiti TK, Banerjee I. Cobalt doped proangiogenic hydroxyapatite for bone tissue engineering application. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 58:648-58. [DOI: 10.1016/j.msec.2015.08.052] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2014] [Revised: 08/05/2015] [Accepted: 08/25/2015] [Indexed: 01/14/2023]
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13
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Zhang E, Zheng L, Liu J, Bai B, Liu C. Influence of Cu content on the cell biocompatibility of Ti-Cu sintered alloys. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 46:148-57. [PMID: 25491971 DOI: 10.1016/j.msec.2014.10.021] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2014] [Revised: 09/21/2014] [Accepted: 10/08/2014] [Indexed: 10/24/2022]
Abstract
The cell toxicity and the cell function of Ti-Cu sintered alloys with different Cu contents (2, 5, 10 and 25 wt.%, respectively) have been investigated in comparison with commercial pure titanium in order to assess the influence of Cu content on the cell biocompatibility of the Ti-Cu alloys. The cytotoxicity was studied by examining the MG63 cell response by CCK8 assessment. The cell morphology was evaluated by acridine orange/ethidium bromide (AO/EB) fluorescence and observed under scanning electronic microscopy (SEM). The cell function was monitored by measuring the AKP activity. It has been shown by the AO/EB morphology results that the cell death on both cp-Ti sample and Ti-Cu samples is due to apoptosis rather than necrosis. Although more apoptotic cells were found on the Ti-2Cu and Ti-5Cu samples, no evidence of Cu content dependent manner of apoptosis has been found. SEM observation indicated very good cell adhesion and spread on the cp-Ti sample and the Ti-Cu samples with different Cu contents. CCK8 results displayed that increase in the Cu content in Ti-Cu alloys does not bring about any difference in the cell viability. In addition, AKP test results indicated that no difference in the differentiation of MG63 was found between the cp-Ti and the Ti-Cu samples and among the Ti-Cu samples. All results indicated that Ti-Cu alloys exhibit very good cell biocompatibility and the Cu content up to 25 wt.% in the Ti-Cu alloys has no influence on the cell proliferation and differentiation.
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Affiliation(s)
- Erlin Zhang
- Key Lab. for Anisotropy and Texture of Materials, Education Ministry of China, Northeastern University, Shenyang 110819, PR China; Jiamusi University, Jiamusi 154007, PR China.
| | | | - Jie Liu
- Key Lab. for Anisotropy and Texture of Materials, Education Ministry of China, Northeastern University, Shenyang 110819, PR China; Dept. of Prosthodontics, The Affiliated Hospital of Medical College, Qingdao University, Qingdao 266003, PR China
| | - Bing Bai
- Dept. of Prosthodontics, School of Stomatology, China Medical University, Liaoning Institute of Dental Research, Shenyang 110001, PR China
| | - Cong Liu
- Jiamusi University, Jiamusi 154007, PR China
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14
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Mattioli-Belmonte M, Cometa S, Ferretti C, Iatta R, Trapani A, Ceci E, Falconi M, De Giglio E. Characterization and cytocompatibility of an antibiotic/chitosan/cyclodextrins nanocoating on titanium implants. Carbohydr Polym 2014; 110:173-82. [PMID: 24906744 DOI: 10.1016/j.carbpol.2014.03.097] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2013] [Revised: 03/24/2014] [Accepted: 03/26/2014] [Indexed: 10/25/2022]
Abstract
A novel ciprofloxacin loaded chitosan nanoparticle-based coating onto titanium substrates has been developed and characterized to obtain an orthopaedic implant surface able to in situ release the antibiotic for the prevention of post-operative infections. Ciprofloxacin loaded chitosan nanoparticles were obtained using the combination of sulfobutyl ether-beta-cyclodextrin and gamma-cyclodextrin. The resulting nanoparticulate system was characterized by TEM, HPLC and XPS. Particle size was in the range 426-552 nm and zeta potential values were around +30 mV. This antibacterial coating was able to in vitro inhibit two nosocomial Staphylococcus aureus strains growth, with a reduction of about 20 times compared to controls. No impairment in MG63 osteoblast-like cells viability, adhesion and gene expression were detected at 48 h, 7 and 14 days of culture. Overall, the investigated coating represents a promising candidate for the development of a new antibiotic carrier for titanium implants.
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Affiliation(s)
- Monica Mattioli-Belmonte
- Department of Clinical and Molecular Sciences, Università Politecnica delle Marche, Via Tronto 10/A, 60126 Ancona, Italy.
| | | | - Concetta Ferretti
- Department of Clinical and Molecular Sciences, Università Politecnica delle Marche, Via Tronto 10/A, 60126 Ancona, Italy.
| | - Roberta Iatta
- Department of Veterinary Medicine, University of Bari Aldo Moro, Str. Prov. per Casamassima Km 3, Valenzano (BA), Italy.
| | - Adriana Trapani
- Department of Pharmacy-Drug Sciences, University of Bari Aldo Moro, Via E. Orabona 4, 70126 Bari, Italy.
| | - Edmondo Ceci
- Department of Veterinary Medicine, University of Bari Aldo Moro, Str. Prov. per Casamassima Km 3, Valenzano (BA), Italy.
| | - Mirella Falconi
- Department of Biomedical and Neuromotor Sciences, University of Bologna, Via Irnerio 48, 40126 Bologna, Italy.
| | - Elvira De Giglio
- Department of Chemistry, University of Bari Aldo Moro, Via E. Orabona 4, 70126 Bari, Italy.
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15
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Sohrabi M, Hesaraki S, Kazemzadeh A. The influence of polymeric component of bioactive glass-based nanocomposite paste on its rheological behaviors andin vitroresponses: Hyaluronic acidversussodium alginate. J Biomed Mater Res B Appl Biomater 2013; 102:561-73. [DOI: 10.1002/jbm.b.33035] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2013] [Revised: 08/04/2013] [Accepted: 08/28/2013] [Indexed: 11/08/2022]
Affiliation(s)
- Mehri Sohrabi
- Nanotechnology and Advanced Materials Research, Materials & Energy Research Center; Alborz Iran
| | - Saeed Hesaraki
- Nanotechnology and Advanced Materials Research, Materials & Energy Research Center; Alborz Iran
| | - Asghar Kazemzadeh
- Nanotechnology and Advanced Materials Research, Materials & Energy Research Center; Alborz Iran
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Activation of the ERK1/2 signaling pathway during the osteogenic differentiation of mesenchymal stem cells cultured on substrates modified with various chemical groups. BIOMED RESEARCH INTERNATIONAL 2013; 2013:361906. [PMID: 24069599 PMCID: PMC3771309 DOI: 10.1155/2013/361906] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/22/2013] [Revised: 07/09/2013] [Accepted: 07/16/2013] [Indexed: 12/22/2022]
Abstract
The current study examined the influence of culture substrates modified with the functional groups –OH, –COOH, –NH2, and –CH3 using SAMs technology, in conjunction with TAAB control, on the osteogenic differentiation of rabbit BMSCs. The CCK-8 assay revealed that BMSCs exhibited substrate-dependent cell viability. The cells plated on –NH2- and –OH-modified substrates were well spread and homogeneous, but those on the –COOH- and –CH3-modified substrates showed more rounded phenotype. The mRNA expression of BMSCs revealed that –NH2-modified substrate promoted the mRNA expression and osteogenic differentiation of the BMSCs. The contribution of ERK1/2 signaling pathway to the osteogenic differentiation of BMSCs cultured on the –NH2-modified substrate was investigated in vitro. The –NH2-modified substrate promoted the expression of integrins; the activation of FAK and ERK1/2. Inhibition of ERK1/2 activation by PD98059, a specific inhibitor of the ERK signaling pathway, blocked ERK1/2 activation in a dose-dependent manner, as revealed for expression of Cbfα-1 and ALP. Blockade of ERK1/2 phosphorylation in BMSCs by PD98059 suppressed osteogenic differentiation on chemical surfaces. These findings indicate a potential role for ERK in the osteogenic differentiation of BMSCs on surfaces modified by specific chemical functional groups, indicating that the microenvironment affects the differentiation of BMSCs. This observation has important implications for bone tissue engineering.
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Zhang N, Molenda JA, Mankoci S, Zhou X, Murphy WL, Sahai N. Crystal structures of CaSiO 3 polymorphs control growth and osteogenic differentiation of human mesenchymal stem cells on bioceramic surfaces. Biomater Sci 2013; 1:1101-1110. [PMID: 26550475 DOI: 10.1039/c3bm60034c] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The repair and replacement of damaged or diseased human bone tissue requires a stable interface between the orthopedic implant and living tissue. The ideal material should be both osteoconductive (promote bonding to bone) and osteoinductive (induce osteogenic differentiation of cells and generate new bone). Partially resorbable bioceramic materials with both properties are developed by expensive trial-and-error methods. Structure-reactivity relationships for predicting the osteoinductive properties of ceramics would significantly increase the efficiency of developing materials for bone tissue engineering. Here we propose the novel hypothesis that the crystal structure of a bioceramic controls the release rates, subsequent surface modifications due to precipitation of new phases, and thus, the concentrations of soluble factors, and ultimately, the attachment, viability and osteogenic differentiation of human Mesenchymal Stem Cells (hMSCs). To illustrate our hypothesis, we used two CaSiO3 polymorphs, pseudo-wollastonite (psw, β-CaSiO3) and wollastonite (wol, α-CaSiO3) as scaffolds for hMSC culture. Polymorphs are materials which have identical chemical composition and stoichiometry, but different crystal structures. We combined the results of detailed surface characterizations, including environmental Scanning Electron Microscopy (SEM) back-scattered imaging, and spot-analysis and 2D elemental mapping by SEM-Energy Dispersive X-ray (SEM-EDX), High Resolution Transmission Electron Microscopy (HRTEM) and surface roughness analysis; culture medium solution analyses; and molecular/genetic assays from cell culture. Our results confirmed the hypothesis that the psw polymorph, which has a strained silicate ring structure, is more osteoinductive than the wol polymorph, which has a more stable, open silicate chain structure. The observations could be attributed to easier dissolution (resorption) of psw compared to wol, which resulted in concentration profiles that were more osteoinductive for the former. Thus, we showed that crystal structure is a fundamental parameter to be considered in the intelligent design of pro-osteogenic, partially resorbable bioceramics.
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Affiliation(s)
- Nianli Zhang
- Materials Science Program, University of Wisconsin, Madison, WI53706, USA ; Department of Biologic and Materials Science, 1011 N. University Avenue, School of Dentistry, University of Michigan, Ann Arbor, MI 48109, USA
| | - James A Molenda
- Department of Biomedical Engineering, University of Wisconsin, Madison, WI 53706, USA
| | - Steven Mankoci
- Department of Polymer Science, 170 University Avenue, Akron, OH 44325, USA. Tel: +1 330-972-5795
| | - Xianfeng Zhou
- Department of Polymer Science, 170 University Avenue, Akron, OH 44325, USA. Tel: +1 330-972-5795
| | - William L Murphy
- Materials Science Program, University of Wisconsin, Madison, WI53706, USA ; Department of Biomedical Engineering, University of Wisconsin, Madison, WI 53706, USA ; Department of Orthopedics and Rehabilitation, University of Wisconsin, Madison, WI 53706, USA ; Department of Pharmacology, University of Wisconsin, Madison, WI 53706, USA
| | - Nita Sahai
- Department of Polymer Science, 170 University Avenue, Akron, OH 44325, USA. Tel: +1 330-972-5795
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Clozza E, Pea M, Cavalli F, Moimas L, Di Lenarda R, Biasotto M. Healing of fresh extraction sockets filled with bioactive glass particles: histological findings in humans. Clin Implant Dent Relat Res 2012; 16:145-53. [PMID: 22691124 DOI: 10.1111/j.1708-8208.2012.00463.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
PURPOSE The aim of the present study was to histologically evaluate fresh human sockets filled with bioactive glass after 6 months of healing. MATERIALS AND METHODS In 13 patients, 32 single extraction sites in the anterior area underwent socket ridge preservation procedure (RPP) with a bioactive glass (BioRestore™, Inion Oy, Tampere, Finland). At implant installation, 22 bone cores were trephined out and processed for histomorphometric and immunohistochemical analysis. RESULTS Newly formed immature bone around residual particles of bioactive glass was found in all 22 biopsies. The histomorphometry of the amount of bone, provisional matrix, and residual graft returned a mean ± SD value of 54 ± 31%, 37.9 ± 25.6%, and 8.1 ± 7.8, respectively, 6 months after RPP. CONCLUSION The use of this grafting material in fresh extraction sockets appears to delay the healing processes of the alveolar bone; therefore, its indication as a material for RPP when implant placement is considered within 6 months after extraction should be revised.
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Affiliation(s)
- Emanuele Clozza
- Resident, Ashman Department of Periodontology and Implant Dentistry, New York University College of Dentistry, New York, NY, USA Head, Department of Pathology, Ospedale Orlandi, Bussolengo, Verona, Italy Director, Research Unit of Paleoradiology and Allied Sciences, Ospedali Riuniti di Trieste, Trieste, Italy R&D manager, Inion Oy, Tampere, Finland Full professor, Division of Dental Sciences and Biomaterials, Department of Biomedicine, University of Trieste, Trieste, Italy Assistant professor, Division of Dental Sciences and Biomaterials, Department of Biomedicine, University of Trieste, Trieste, Italy
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Lin CC, Chen SF, Leung KS, Shen P. Effects of CaO/P2O5 ratio on the structure and elastic properties of SiO2-CaO-Na2O-P2O5 bioglasses. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2012; 23:245-258. [PMID: 22109904 DOI: 10.1007/s10856-011-4504-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2011] [Accepted: 11/11/2011] [Indexed: 05/31/2023]
Abstract
The evolution of elastic properties and structure upon the change of CaO/P(2)O(5) ratio in SiO(2)-CaO-Na(2)O-P(2)O(5) glasses (45S5-derived and 55S4-derived) at ambient conditions has been studied by using both Brillouin and Raman spectroscopy coupled with X-ray diffraction. Under the same SiO(2)/Na(2)O ratio, it is found that a decrease in CaO/P(2)O(5) molar ratio has caused a more-polymerized silicate network via a net consumption of Q(0), Q(1), and Q(2) species yet enriching in Q(3) and Q(4) species. Brillouin experiments revealed that all the bulk, shear and Young's moduli of the glasses studied increases with the increase of CaO/P(2)O(5) molar ratio. The unexpected variation trend in shear modulus can be correlated to the contribution from cohesion, the less-polymerized phosphate Q species, and density. Compared to the 45S5-derived, the more-polymerized 55S4-deived glass has a lower bulk but slightly higher shear modulus at the given CaO/P(2)O(5) ratio.
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Affiliation(s)
- Chung-Cherng Lin
- Institute of Earth Sciences, Academia Sinica, Taipei, Taiwan, ROC.
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Kraus D, Deschner J, Jäger A, Wenghoefer M, Bayer S, Jepsen S, Allam JP, Novak N, Meyer R, Winter J. Human β-defensins differently affect proliferation, differentiation, and mineralization of osteoblast-like MG63 cells. J Cell Physiol 2011; 227:994-1003. [DOI: 10.1002/jcp.22808] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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21
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Li J, Wei L, Sun J, Guan G. Effect of ionic products of dicalcium silicate coating on osteoblast differentiation and collagen production via TGF-β1 pathway. J Biomater Appl 2011; 27:595-604. [PMID: 22071351 DOI: 10.1177/0885328211416393] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
In this work, the medium containing ionic products of dicalcium silicates (Ca(2)SiO(4)) for culturing MG63 cells was prepared by immersing a titanium alloy plate with the plasma sprayed Ca(2)SiO(4) coatings in DMEM solution. The effect of the ionic products on cellular differentiation, collagen production, and local growth factors (prostaglandin E(2) [PGE(2)] and transforming growth factor-β [TGF-β1]) of osteoblast-like MG63 cells were investigated. The normal DMEM was also used to culture MG63 cells as the control group. Differentiation of cell was evaluated by detecting alkaline phosphatase (ALP) activity and osteocalcin (OC) synthesis as well as their gene expression. Collagen production was analyzed by Sircol assay. The levels of PGE(2) and TGF-β1 in culture medium were measured using enzyme-linked immunosorbent assay (ELISA). The gene expressions of TGF-β receptors (TGF-β RI and TGF-β RII) were also measured by real-time PCR technology. MG63 cells cultured in DMEM containing ionic products of Ca(2)SiO(4) coating showed enhanced differentiation and increased collagen production. The results obtained from ELISA showed that the levels of PGE(2) and TGF-β1 in experimental group were higher than that in control. The gene expression of TGF-β receptors was upregulated, indicating that more TGF-β1 bonded to their receptors which produce more effects on the osteoblastic activity, leading to enhanced differentiation and synthetic activity of osteoblast. It is concluded that ionic products of Ca(2)SiO(4) coating may enhance cellular differentiation and collagen production by influencing TGF-β1 pathway.
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Affiliation(s)
- Jianyou Li
- Orthopaedic Department, The Central Hospital of Huzhou, Huzhou, Zhejiang 313000, PR China.
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22
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Quan Z, Han X, Ye Z, Chenzhong Y, Wenjun C. Influence of Novel Nano-Mesoporous Bioactive Glass on the Regulation of IGF-II Gene Expression in Osteoblasts. Cell Biochem Biophys 2011; 62:119-23. [DOI: 10.1007/s12013-011-9269-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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23
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Zhou H, Wu X, Wei J, Lu X, Zhang S, Shi J, Liu C. Stimulated osteoblastic proliferation by mesoporous silica xerogel with high specific surface area. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2011; 22:731-739. [PMID: 21287245 DOI: 10.1007/s10856-011-4239-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2010] [Accepted: 01/14/2011] [Indexed: 05/30/2023]
Abstract
Specific surface area is a critical parameter of mesoporous silica-based biomaterials, however, little is known about its effects on osteoblast responses in vitro. In the present study, mesoporous silica xerogels (MSXs) with different surface area (401, 647 and 810 m(2)/g, respectively) were synthesized by a sol-gel process. Surface silanol contents decreased with the increase of surface area with which protein adsorption capability positively correlated. And the apatite-like surface seemed to form faster on MSXs with higher surface area determined by XRD analysis. Using MG63 osteoblast-like cells as models, it was found that cell proliferations were promoted on MSXs with higher surface area, based on the premise that the effects of Si released from materials on osteoblast viability were excluded by real-time Transwell(®) assay. RT-PCR results indicated cell adhesion-related integrin subunits α5 were up-regulated by higher surface area at day 1, which was further confirmed by flow cytometry analysis. The data suggest that increasing SSA of MSXs could promote surface cellular affinity by adsorbing serum proteins and accelerating apatite-like layer formation, which results in promoted osteoblastic proliferation via integrin subunit α5 at initial adhesion stage. Regulating SSA, an effective approach in designing mesoporous silica-based materials, provides an alternative method to obtain desirable tissue-response in bone regeneration and drug-delivery system.
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Affiliation(s)
- Huanjun Zhou
- The State Key Laboratory of Bioreactor Engineering, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, People's Republic of China
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Zhou H, Wei J, Wu X, Shi J, Liu C, Jia J, Dai C, Gan Q. The bio-functional role of calcium in mesoporous silica xerogels on the responses of osteoblasts in vitro. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2010; 21:2175-2185. [PMID: 20411307 DOI: 10.1007/s10856-010-4083-8] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2009] [Accepted: 04/07/2010] [Indexed: 05/29/2023]
Abstract
Mesoporous silica xerogels with various amount of calcium (0, 5, 10 and 15%, named m-SXC0, m-SXC5, m-SXC10 and m-SXC15, respectively) were synthesized by template sol-gel methods, and cell responses to m-SXCs were studied using murine pre-osteoblast MC3T3-E1 in vitro. The results showed that cell morphology was not affected by m-SXCs indicating good biocompatibility. Furthermore, cell proliferation ratio on the m-SXCs increased over time, among which m-SXC10 was highest. NO production obviously rose with the increase of Ca content in m-SXCs. ALP activity and PGE(2) level on m-SXC5 significantly improved compared with m-SXC0 while decreased with the increase of Ca content for m-SXC10 and m-SXC15. No obvious discrepancy on osteopontin mRNA expressions was observed among m-SXCs. The collagen I and osteocalcin mRNA expression on m-SXC5 were up-regulated, while decreased on m-SXC15 evidently. The phosphorylation level of ERK 1/2 for the m-SXC10 was highest after 7 days. In conclusion, calcium in m-SXCs plays an important role in osteoblast activity, which indicates mesoporous silica xerogel containing appropriate calcium could stimulate osteoblast proliferation, differentiation, gene expression via the activation of ERK 1/2 signaling pathway, and shows great prospects in bone regeneration field using as a drug controlled release filler.
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Affiliation(s)
- Huanjun Zhou
- Key Laboratory for Ultrafine Materials of Ministry of Education, and Engineering Research Center for Biomedical Materials of Ministry of Education, East China University of Science and Technology, Shanghai 200237, People's Republic of China
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25
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Zhao Q, Qian J, Zhou H, Yuan Y, Mao Y, Liu C. In vitro
osteoblast-like and endothelial cells' response to calcium silicate/calcium phosphate cement. Biomed Mater 2010; 5:35004. [DOI: 10.1088/1748-6041/5/3/035004] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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26
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Stan GE, Pina S, Tulyaganov DU, Ferreira JMF, Pasuk I, Morosanu CO. Biomineralization capability of adherent bio-glass films prepared by magnetron sputtering. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2010; 21:1047-1055. [PMID: 20091102 DOI: 10.1007/s10856-009-3940-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2009] [Accepted: 11/06/2009] [Indexed: 05/28/2023]
Abstract
Radiofrequency magnetron sputtering deposition at low temperature (150 degrees C) was used to deposit bioactive glass coatings onto titanium substrates. Three different working atmospheres were used: Ar 100%, Ar + 7%O(2), and Ar + 20%O(2). The preliminary adhesion tests (pull-out) produced excellent adhesion values (approximately 75 MPa) for the as-deposited bio-glass films. Bioactivity tests in simulated body fluid were carried out for 30 days. SEM-EDS, XRD and FTIR measurements were performed. The tests clearly showed strong bioactive features for all the prepared films. The best biomineralization capability, expressed by the thickest chemically grown carbonated hydroxyapatite layer, was obtained for the bio-glass coating sputtered in a reactive atmosphere with 7% O(2).
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Affiliation(s)
- G E Stan
- National Institute of Materials Physics, Bucharest-Magurele, Romania,
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27
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Osathanon T, Giachelli CM, Somerman MJ. Immobilization of alkaline phosphatase on microporous nanofibrous fibrin scaffolds for bone tissue engineering. Biomaterials 2009; 30:4513-21. [PMID: 19501906 DOI: 10.1016/j.biomaterials.2009.05.022] [Citation(s) in RCA: 86] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2009] [Accepted: 05/10/2009] [Indexed: 10/20/2022]
Abstract
Alkaline phosphatase (ALP) promotes bone formation by degrading inorganic pyrophosphate (PP(i)), an inhibitor of hydroxyapatite formation, and generating inorganic phosphate (P(i)), an inducer of hydroxyapatite formation. P(i) is a crucial molecule in differentiation and mineralization of osteoblasts. In this study, a method to immobilize ALP on fibrin scaffolds with tightly controllable pore size and pore interconnection was developed, and the biological properties of these scaffolds were characterized both in vitro and in vivo. Microporous, nanofibrous fibrin scaffolds (FS) were fabricated using a sphere-templating method. ALP was covalently immobilized on the fibrin scaffolds using 1-ethyl-3-(dimethylaminopropyl)carbodiimide hydrochloride (EDC). Scanning electron microscopic observation (SEM) showed that mineral was deposited on immobilized alkaline phosphatase fibrin scaffolds (immobilized ALP/FS) when incubated in medium supplemented with beta-glycerophosphate, suggesting that the immobilized ALP was active. Primary calvarial cells attached, spread and formed multiple layers on the surface of the scaffolds. Mineral deposition was also observed when calvarial cells were seeded on immobilized ALP/FS. Furthermore, cells seeded on immobilized ALP/FS exhibited higher osteoblast marker gene expression compared to control FS. Upon implantation in mouse calvarial defects, both the immobilized ALP/FS and FS alone treated group had higher bone volume in the defect compared to the empty defect control. Furthermore, bone formation in the immobilized ALP/FS treated group was statistically significant compared to FS alone group. However, the response was not robust.
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Affiliation(s)
- Thanaphum Osathanon
- Department of Oral Biology, School of Dentistry, University of Washington, Seattle, WA 98195, USA
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28
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Schwartz Z, Simon BJ, Duran MA, Barabino G, Chaudhri R, Boyan BD. Pulsed electromagnetic fields enhance BMP-2 dependent osteoblastic differentiation of human mesenchymal stem cells. J Orthop Res 2008; 26:1250-5. [PMID: 18404656 DOI: 10.1002/jor.20591] [Citation(s) in RCA: 114] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Mesenchymal stem cells (MSCs) express an osteoblastic phenotype when treated with BMP-2, and BMP-2 is used clinically to induce bone formation although high doses are required. Pulsed electromagnetic fields (PEMF) also promote osteogenesis in vivo, in part through direct action on osteoblasts. We tested the hypothesis that PEMF enhances osteogenesis of MSCs in the presence of an inductive stimulus like BMP-2. Confluent cultures of human MSCs were grown on calcium phosphate disks and were treated with osteogenic media (OM), OM containing 40 ng/mL rhBMP-2, OM + PEMF (8 h/day), or OM + BMP-2 + PEMF. MSCs demonstrated minor increases in alkaline phosphatase (ALP) during 24 days in culture and no change in osteocalcin. OM increased ALP and osteocalcin by day 6, but PEMF had no additional effect at any time. BMP-2 was stimulatory over OM, and PEMF + BMP-2 synergistically increased ALP and osteocalcin. PEMF also enhanced the effects of BMP-2 on PGE2, latent and active TGF-beta1, and osteoprotegerin. Effects of PEMF on BMP-2-treated cells were greatest at days 12 to 20. These results demonstrate that PEMF enhances osteogenic effects of BMP-2 on MSCs cultured on calcium phosphate substrates, suggesting that PEMF will improve MSC response to BMP-2 in vivo in a bone environment.
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Affiliation(s)
- Z Schwartz
- Petit Institute of Bioengineering and Bioscience, Georgia Institute of Technology, 315 Ferst Drive NW, Atlanta, Georgia 30332, USA
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29
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Hertz A, Bruce IJ. Inorganic materials for bone repair or replacement applications. Nanomedicine (Lond) 2007; 2:899-918. [DOI: 10.2217/17435889.2.6.899] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
In recent years, excipient systems have been used increasingly in biomedicine in reconstructive and replacement surgery, as bone cements, drug-delivery vehicles and contrast agents. Particularly, interest has been growing in the development and application of controlled pore inorganic ceramic materials for use in bone-replacement and bone-repair roles and, in this context, attention has been focused on calcium-phosphate, bioactive glasses and SiO2- and TiO2-based materials. It has been shown that inorganic materials that most closely mimic bone structure and surface chemistry most closely function best in bone replacement/repair and, in particular, if a substance possesses a macroporous structure (pores and interconnections >100µm diameter), then cell infiltration, bone growth and vascularization can all be promoted. The surface roughness and micro/mesoporosity of a material have also been observed to significantly influence its ability to promote apatite nucleation and cell attachment significantly. Pores (where present) can also be packed with pharmaceuticals and biomolecules (e.g., bone morphogenetic proteins [BMPs], which can stimulate bone formation). Finally, the most bio-efficient – in terms of collagen formation and apatite nucleation – materials are those that are able to provide soluble mineralizing species (Si, Ca, PO4) at their implant sites and/or are doped or have been surface-activated with specific functional groups. This article presents the context and latest advances in the field of bone-repair materials, especially with respect to the development of bioactive glasses and micro/mesoporous and macroporous inorganic scaffolds. It deals with the possible methods of preparing porous pure/doped or functionalized silicas or their composites, the studies that have been undertaken to evaluate their abilities to act as bone repair scaffolds and also presents future directions for work in that context.
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Affiliation(s)
- Audrey Hertz
- University of Kent, Department of Biosciences, Canterbury, CT2 7NJ, UK
| | - Ian J Bruce
- University of Kent, Department of Biosciences, Canterbury, CT2 7NJ, UK
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Vaahtio M, Peltola T, Hentunen T, Ylänen H, Areva S, Wolke J, Salonen JI. The properties of biomimetically processed calcium phosphate on bioactive ceramics and their response on bone cells. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2006; 17:1113-25. [PMID: 17122926 DOI: 10.1007/s10856-006-0538-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2005] [Accepted: 10/24/2005] [Indexed: 05/12/2023]
Abstract
This study looks for grounds to alter the chemical composition (phosphate, calcium, silica and carbonate), dissolution properties, structure and nanotopography of the biomimetically processed surfaces on bioactive ceramics to optimize their shown ability to influence bone cell behaviour and production of new bone. In the bone environment desirable characteristic of these materials is their ability to be remodeled by natural osteoclastic resorption. Different silica and carbonate containing calcium phosphate layers were prepared on bioactive glasses 9 (S53P4) and 1-98 (S53P2) and sol-gel processed pure silica SiO2 in C- and R-SBF (conventional and revised simulated body fluid) for varying periods of time. It was shown that in R-SBF the CaP layer formed faster compared to C-SBF. The CaP layer in the R-SBF contained more carbonate (CO3(2-)) compared to that formed with the same immersion time in C-SBF. The CaP so formed in R-SBF with faster precipitation is more amorphous than the bonelike HCA formed in C-SBF. The results indicate that the most suitable surface for both osteoblasts and osteoclasts was found to be an amorphous CaP having mesoporous nanotopography and proper dissolution rate of calcium and silica.
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Affiliation(s)
- M Vaahtio
- Turku Biomaterials Centre, University of Turku, Itäinen Pitkäkatu 4B, FIN-20520, Turku, Finland.
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Whited BM, Skrtic D, Love BJ, Goldstein AS. Osteoblast response to zirconia-hybridized pyrophosphate-stabilized amorphous calcium phosphate. J Biomed Mater Res A 2006; 76:596-604. [PMID: 16278876 PMCID: PMC1477539 DOI: 10.1002/jbm.a.30573] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Calcium phosphate bioceramics, such as hydroxyapatite, have long been used as bone substitutes because of their proven biocompatibility and bone binding properties in vivo. Recently, a zirconia-hybridized pyrophosphate-stabilized amorphous calcium phosphate (Zr-ACP) has been synthesized, which is more soluble than hydroxyapatite and allows for controlled release of calcium and phosphate ions. These ions have been postulated to increase osteoblast differentiation and mineralization in vitro. The focus of this work is to elucidate the physicochemical properties of Zr-ACP and to measure cell response to Zr-ACP in vitro using a MC3T3-E1 mouse calvarial-derived osteoprogenitor cell line. Cells were cultured in osteogenic medium and mineral was added to culture at different stages in cell maturation. Culture in the presence of Zr-ACP showed significant increases in cell proliferation, alkaline phosphatase activity (ALP), and osteopontin (OPN) synthesis, whereas collagen synthesis was unaffected. In addition, calcium and phosphate ion concentrations and medium pH were found to transiently increase with the addition of Zr-ACP, and are hypothesized to be responsible for the osteogenic effect of Zr-ACP.
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Affiliation(s)
- Bryce M Whited
- School of Biomedical Engineering and Sciences, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061-0298, USA
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WHITED BRYCEM, GOLDSTEIN AARONS, SKRTIC DRAGO, LOVE BRIANJ. Fabrication and characterization of poly(DL-lactic-co-glycolic acid)/zirconia-hybridized amorphous calcium phosphate composites. JOURNAL OF BIOMATERIALS SCIENCE. POLYMER EDITION 2006; 17:403-18. [PMID: 16768292 PMCID: PMC2962981 DOI: 10.1163/156856206776374124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Several minerals, such as hydroxyapatite and beta-tricalcium phosphate, have been incorporated into bioresorbable polyester bone scaffolds to increase the osteoconductivity both in vitro and in vivo. More soluble forms of calcium phosphate that release calcium and phosphate ions have been postulated as factors that increase osteoblast differentiation and mineralization. Recently, a zirconia-hybridized pyrophosphate-stabilized amorphous calcium phosphate (Zr-ACP) has been synthesized allowing controlled release of calcium and phosphate ions. When incorporated into bioresorbable scaffolds, Zr-ACP has the potential to induce osteoconductivity. In this study, 80-90% (w/v) porous poly(DL-lactic-co-glycolic acid) (PLGA) scaffolds were formed by thermal phase separation from dioxane while incorporating Zr-ACP. Scanning electron microscopy revealed a highly porous structure with a pore size ranging from a few microm to about 100 microm, smaller than we had hoped for. Zr-ACP particles were evenly dispersed in the composite structure and incorporated into the pore walls. The amorphous structure of the Zr-ACP was maintained during composite fabrication, as found by X-ray diffraction. Composite scaffolds had larger compressive yield strengths and moduli compared to pure polymer scaffolds. These initial efforts demonstrate that PLGA/Zr-ACP composites can be formed in ways that ultimately serve as promising bone scaffolds in tissue engineering.
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Affiliation(s)
- BRYCE M. WHITED
- School of Biomedical Engineering and Sciences, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA
| | - AARON S. GOLDSTEIN
- School of Biomedical Engineering and Sciences, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA
- Department of Chemical Engineering, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA
| | - DRAGO SKRTIC
- American Dental Association Foundation, Paffenbarger Research Center, Gaithersburg, MD 20899, USA
| | - BRIAN J. LOVE
- School of Biomedical Engineering and Sciences, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA
- Department of Materials Science and Engineering, 0286, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA
- To whom correspondence should be addressed at the Department of Materials Science and Engineering. Tel.: (1-540) 231-3186. Fax: (1-540) 231-3554.,
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Kurella A, Dahotre NB. Review paper: surface modification for bioimplants: the role of laser surface engineering. J Biomater Appl 2005; 20:5-50. [PMID: 15972362 DOI: 10.1177/0885328205052974] [Citation(s) in RCA: 304] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Often hard implants undergo detachment from the host tissue due to inadequate biocompatibility and poor osteointegration. Changing surface chemistry and physical topography of the surface influences biocompatibility. At present, the understanding of biocompatibility of both virgin and modified surfaces of bioimplant materials is limited and a great deal of research is being dedicated to this aspect. In view of this, the current review casts new light on research related to the surface modification of biomaterials, especially materials for prosthetic applications. A brief overview of the major surface modification techniques has been presented, followed by an in-depth discussion on laser surface modifications that have been explored so far along with those that hold tremendous potential for bioimplant applications.
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Affiliation(s)
- Anil Kurella
- Department of Materials Science and Engineering, The University of Tennessee, Knoxville, 37996, USA
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Borsari V, Giavaresi G, Fini M, Torricelli P, Salito A, Chiesa R, Chiusoli L, Volpert A, Rimondini L, Giardino R. Physical characterization of different-roughness titanium surfaces, with and without hydroxyapatite coating, and their effect on human osteoblast-like cells. J Biomed Mater Res B Appl Biomater 2005; 75:359-68. [PMID: 16100719 DOI: 10.1002/jbm.b.30313] [Citation(s) in RCA: 80] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
The aim of this study was to characterize and compare various titanium (Ti) and hydroxyapatite (HA) coatings on Ti6Al4V, in view of their application on noncemented orthopedic implants. Two innovative vacuum plasma sprayed (VPS) coatings, the first of ultrahigh rough and dense Ti (PG60, Ra=74 microm) and the second of ultrahigh rough and dense Ti coated with HA (HPG60, Ra=52 microm), have been developed, and the response of osteoblast-like cells (MG-63) seeded on these new coatings was evaluated in comparison to: a low roughness and sandblasted (Ti/SA, Ra=4 microm) Ti6Al4V surface; Ti medium (TI01, Ra=18 microm), and high (TI60, Ra=40 microm) roughness VPS coatings; and the relative Ti plus HA duplex coatings (HT01, Ra=12 microm and HT60, Ra=36 microm respectively), also obtained by VPS. PG60 coating presented no open porosity, making it dense and potentially intrinsically stronger. Cell adhesion and proliferation on PG60 was similar to those of the smoothest one (Ti/SA) and adhesion on ultrahigh roughness was lower than the medium- and high-roughness coatings, whereas cell proliferation on PG60 was lower than TI60. The HA coating determined significant increases in cell proliferation at medium and high roughness levels when compared to the relative Ti coating, but not compared to the ultrahigh one; all HA-coated surfaces showed a decrease in alkaline phosphatase activity and collagen I production. Surface morphology and the HA coating strongly affected cell behavior. However, ultrahigh values of roughness are not correctly seen by cells, and the presence of HA has no improving effects.
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Affiliation(s)
- Veronica Borsari
- Department of Experimental Surgery, Research Institute Codivilla-Putti, Rizzoli Orthopaedic Institute, Bologna, Italy
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