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Luu CH, Nguyen NT, Ta HT. Unravelling Surface Modification Strategies for Preventing Medical Device-Induced Thrombosis. Adv Healthc Mater 2024; 13:e2301039. [PMID: 37725037 DOI: 10.1002/adhm.202301039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 08/29/2023] [Indexed: 09/21/2023]
Abstract
The use of biomaterials in implanted medical devices remains hampered by platelet adhesion and blood coagulation. Thrombus formation is a prevalent cause of failure of these blood-contacting devices. Although systemic anticoagulant can be used to support materials and devices with poor blood compatibility, its negative effects such as an increased chance of bleeding, make materials with superior hemocompatibility extremely attractive, especially for long-term applications. This review examines blood-surface interactions, the pathogenesis of clotting on blood-contacting medical devices, popular surface modification techniques, mechanisms of action of anticoagulant coatings, and discusses future directions in biomaterial research for preventing thrombosis. In addition, this paper comprehensively reviews several novel methods that either entirely prevent interaction between material surfaces and blood components or regulate the reaction of the coagulation cascade, thrombocytes, and leukocytes.
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Affiliation(s)
- Cuong Hung Luu
- School of Environment and Science, Griffith University, Nathan, Queensland, 4111, Australia
- Queensland Micro- and Nanotechnology Centre, Griffith University, Nathan, Queensland, 4111, Australia
| | - Nam-Trung Nguyen
- School of Environment and Science, Griffith University, Nathan, Queensland, 4111, Australia
- Queensland Micro- and Nanotechnology Centre, Griffith University, Nathan, Queensland, 4111, Australia
| | - Hang Thu Ta
- School of Environment and Science, Griffith University, Nathan, Queensland, 4111, Australia
- Queensland Micro- and Nanotechnology Centre, Griffith University, Nathan, Queensland, 4111, Australia
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2
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Integral Algorithms to Evaluate TiO 2 and N-TiO 2 Thin Films' Cytocompatibility. Int J Mol Sci 2022; 23:ijms232315183. [PMID: 36499509 PMCID: PMC9736632 DOI: 10.3390/ijms232315183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 11/24/2022] [Accepted: 11/30/2022] [Indexed: 12/07/2022] Open
Abstract
Titanium oxide (TiO2) and oxynitride (N-TiO2) coatings can increase nitinol stents' cytocompatibility with endothelial cells. Methods of TiO2 and N-TiO2 sputtering and cytocompatibility assessments vary significantly among different research groups, making it difficult to compare results. The aim of this work was to develop an integral cytocompatibility index (ICI) and a decision tree algorithm (DTA) using the "EA.hy926 cell/TiO2 or N-TiO2 coating" model and to determine the optimal cytocompatible coating. Magnetron sputtering was performed in a reaction gas medium with various N2:O2 ratios and bias voltages. The samples' morphology was studied by scanning electron microscopy (SEM) and Raman spectroscopy. The cytocompatibility of the coatings was evaluated in terms of their cytotoxicity, adhesion, viability, and NO production. The ICI and DTA were developed to assess the cytocompatibility of the samples. Both algorithms demonstrated the best cytocompatibility for the sample sputtered at Ubias = 0 V and a gas ratio of N2:O2 = 2:1, in which the rutile phase dominated. The DTA provided more detailed information about the cytocompatibility, which depended on the sputtering mode, surface morphology, and crystalline phase. The proposed mathematical models relate the cytocompatibility and the studied physical characteristics.
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Innovative Coatings of Metallic Alloys Used as Bioactive Surfaces in Implantology: A Review. COATINGS 2021. [DOI: 10.3390/coatings11060649] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Metallic implants are widely used in the field of implantology, but there are still problems leading to implant failures due to weak osseointegration, low mechanical strength for the implant, inadequate antibacterial properties, and low patient satisfaction. Implant failure can be caused by bacterial infections and poor osteointegration. To improve the implant functionalization, many researchers focus on surface modifications to prepare the proper physical and chemical conditions able to increase biocompatibility and osteointegration between implant and bone. Improving the antibacterial performance is also a key factor to avoid the inflammation in the human body. This paper is a brief review for the types of coatings used to increase osseointegration and biocompatibility for the successful use of metal alloys in the field of implantology.
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Shivalingam C, Purushothaman B, R RC, Subramanium B. Thermal treatment stimulus on erythrocyte compatibility and hemostatic behavior of one‐dimensional bioactive nanostructures. J Biomed Mater Res A 2020; 108:2277-2290. [DOI: 10.1002/jbm.a.36985] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2020] [Revised: 03/29/2020] [Accepted: 04/04/2020] [Indexed: 12/14/2022]
Affiliation(s)
- Chitra Shivalingam
- National Centre for Nanoscience and NanotechnologyUniversity of Madras Chennai India
| | - Bargavi Purushothaman
- National Centre for Nanoscience and NanotechnologyUniversity of Madras Chennai India
| | - Riju Chandran R
- National Centre for Nanoscience and NanotechnologyUniversity of Madras Chennai India
| | - Balakumar Subramanium
- National Centre for Nanoscience and NanotechnologyUniversity of Madras Chennai India
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Lin CH, Lu JH, Hsia K, Lee H, Yao CL, Ma H. The Antithrombotic Function of Sphingosine-1-Phosphate on Human Adipose-Stem-Cell-Recellularized Tissue Engineered Vascular Graft In Vitro. Int J Mol Sci 2019; 20:ijms20205218. [PMID: 31640220 PMCID: PMC6829437 DOI: 10.3390/ijms20205218] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Revised: 10/11/2019] [Accepted: 10/17/2019] [Indexed: 12/26/2022] Open
Abstract
Adipose stem cells (ASCs) show potential in the recellularization of tissue engineerined vascular grafts (TEVGs). However, whether sphingosine-1-phosphate (S1P) could further enhance the adhesion, proliferation, and antithrombosis of ASCs on decellularized vascular scaffolds is unknown. This study investigated the effect of S1P on the recellularization of TEVGs with ASCs. Human ASCs were derived from lipoaspirate. Scaffolds were derived from human umbilical arteries (HUAs) with treatment of 0.1% sodium dodecyl sulfate (SDS) for 48 h (decellularized HUAs; DHUAs). The adhesion, proliferation, and antithrombotic functions (kinetic clotting time and platelet adhesion) of ASCs on DHUAs with S1P or without S1P were evaluated. The histology and DNA examination revealed a preserved structure and the elimination of the nuclear component more than 95% in HUAs after decellularizaiton. Human ASCs (hASCs) showed CD29(+), CD73(+), CD90(+), CD105(+), CD31(-), CD34(-), CD44(-), HLA-DR(-), and CD146(-) while S1P-treated ASCs showed marker shifting to CD31(+). In contrast to human umbilical vein endothelial cells (HUVECs), S1P didn't significantly increase proliferation of ASCs on DHUAs. However, the kinetic clotting test revealed prolonged blood clotting in S1P-treated ASC-recellularized DHUAs. S1P also decreased platelet adhesion on ASC-recellularized DHUAs. In addition, S1P treatment increased the syndecan-1 expression of ASCs. TEVG reconstituted with S1P and ASC-recellularized DHUAs showed an antithrombotic effect in vitro. The preliminary results showed that ASCs could adhere to DHUAs and S1P could increase the antithrombotic effect on ASC-recellularized DHUAs. The antithrombotic effect is related to ASCs exhibiting an endothelial-cell-like function and preventing of syndecan-1 shedding. A future animal study is warranted to prove this novel method.
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Affiliation(s)
- Chih-Hsun Lin
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Taipei Veterans General Hospital, Taipei 11217, Taiwan.
- Department of Surgery, School of Medicine, National Yang-Ming University, Taipei 11221, Taiwan.
| | - Jen-Her Lu
- Department of Pediatrics, Taipei Veterans General Hospital, Taipei 11217, Taiwan.
- Department of Surgery, medicine & Pediatrics, School of Medicine, National Defense Medical Center, Taipei 11490, Taiwan.
- Department of Pediatrics, School of Medicine, National Yang-Ming University, Taipei 11221, Taiwan.
| | - Kai Hsia
- Department of Pediatrics, Taipei Veterans General Hospital, Taipei 11217, Taiwan.
- Department of Life Science, National Taiwan University, Taipei 10617, Taiwan.
| | - Hsinyu Lee
- Department of Life Science, National Taiwan University, Taipei 10617, Taiwan.
| | - Chao-Ling Yao
- Department of Chemical Engineering and Materials Science, Graduate School of Biotechnology and Bioengineering, Yuan Ze University, Chung-Li, Taoyuan City 32003, Taiwan.
| | - Hsu Ma
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Taipei Veterans General Hospital, Taipei 11217, Taiwan.
- Department of Surgery, School of Medicine, National Yang-Ming University, Taipei 11221, Taiwan.
- Department of Surgery, medicine & Pediatrics, School of Medicine, National Defense Medical Center, Taipei 11490, Taiwan.
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Cizek J, Kovarik O, Siska F, Bensch J, Cupera J, Matejkova M, Siegl J, Chraska T, Khor KA. Increasing Fatigue Endurance of Hydroxyapatite and Rutile Plasma Sprayed Biocomponents by Controlling Deposition In-Flight Properties. ACS Biomater Sci Eng 2019; 5:1703-1714. [PMID: 33405547 DOI: 10.1021/acsbiomaterials.8b01545] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Three sets of hydroxyapatite and rutile-TiO2 coatings were plasma sprayed onto metallic substrates. The spray parameters of the sets were modified so as to obtain different in-flight temperatures and velocities of the powder particles within the plasma jet (ranging from 1778 to 2385 K and 128 to 199 m s-1, respectively). Fatigue endurance of the coated specimens was then tested. The samples were subjected to a symmetric cyclical bend loading, and the crack propagation was monitored until it reached a predefined cross-section damage. The influence of the coating deposition was evaluated with respect to a noncoated reference set and the in-flight characteristics. Attributed to favorable residual stress development in the sprayed samples, it was found that the deposition of the coatings generally led to a prolongation of the fatigue lives. The highest lifetime increase (up to 46% as compared to the noncoated set) was recorded for the coatings deposited under high in-flight temperature and velocity. Importantly, this was achieved without significantly compromising the microstructure or phase composition of the deposited HA and TiO2 layers.
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Affiliation(s)
- J Cizek
- Institute of Plasma Physics, The Czech Academy of Sciences, Za Slovankou 1782/3, 182 00 Prague, Czech Republic
| | - O Kovarik
- Czech Technical University, Faculty of Nuclear Sciences and Physical Engineering, Trojanova 13, 120 00 Prague, Czech Republic
| | - F Siska
- Institute of Physics of Materials, The Czech Academy of Sciences, Zizkova 513/22, 616 62 Brno, Czech Republic
| | - J Bensch
- Glass Service Corporation, Rokytnice 60, 755 01 Vsetin, Czech Republic
| | - J Cupera
- Institute of Materials Science and Engineering, Brno University of Technology, Technicka 2896/3, 616 69 Brno, Czech Republic
| | - M Matejkova
- Institute of Materials Science and Engineering, Brno University of Technology, Technicka 2896/3, 616 69 Brno, Czech Republic
| | - J Siegl
- Czech Technical University, Faculty of Nuclear Sciences and Physical Engineering, Trojanova 13, 120 00 Prague, Czech Republic
| | - T Chraska
- Institute of Plasma Physics, The Czech Academy of Sciences, Za Slovankou 1782/3, 182 00 Prague, Czech Republic
| | - K A Khor
- Nanyang Technological University, School of Mechanical and Aerospace Engineering, 50 Nanyang Avenue, 639 798 Singapore
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Xu L, Zhang K, Wu C, Lei X, Ding J, Shi X, Liu C. Micro-Arc Oxidation Enhances the Blood Compatibility of Ultrafine-Grained Pure Titanium. MATERIALS (BASEL, SWITZERLAND) 2017; 10:E1446. [PMID: 29257104 PMCID: PMC5744381 DOI: 10.3390/ma10121446] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Revised: 12/06/2017] [Accepted: 12/12/2017] [Indexed: 12/21/2022]
Abstract
Ultrafine-grained pure titanium prepared by equal-channel angular pressing has favorable mechanical performance and does not contain alloy elements that are toxic to the human body. It has potential clinical value in applications such as cardiac valve prostheses, vascular stents, and hip prostheses. To overcome the material's inherent thrombogenicity, surface-coating modification is a crucial pathway to enhancing blood compatibility. An electrolyte solution of sodium silicate + sodium polyphosphate + calcium acetate and the micro-arc oxidation (MAO) technique were employed for in situ oxidation of an ultrafine-grained pure titanium surface. A porous coating with anatase- and rutile-phase TiO₂ was generated and wettability and blood compatibility were examined. The results showed that, in comparison with ultrafine-grained pure titanium substrate, the MAO coating had a rougher surface, smaller contact angles for distilled water and higher surface energy. MAO modification effectively reduced the hemolysis rate; extended the dynamic coagulation time, prothrombin time (PT), and activated partial thromboplastin time (APTT); reduced the amount of platelet adhesion and the degree of deformation; and enhanced blood compatibility. In particular, the sample with an oxidation time of 9 min possessed the highest surface energy, largest PT and APTT values, smallest hemolysis rate, less platelet adhesion, a lesser degree of deformation, and more favorable blood compatibility. The MAO method can significantly enhance the blood compatibility of ultrafine-grained pure titanium, increasing its potential for practical applications.
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Affiliation(s)
- Lin Xu
- Center of Micro/Nano Science and Technology, Jiangsu University, Zhenjiang 212013, China.
| | - Kun Zhang
- Center of Micro/Nano Science and Technology, Jiangsu University, Zhenjiang 212013, China.
| | - Cong Wu
- Center of Micro/Nano Science and Technology, Jiangsu University, Zhenjiang 212013, China.
| | - Xiaochun Lei
- Laboratory Animal Research Center, Jiangsu University, Zhenjiang 212013, China.
| | - Jianning Ding
- Center of Micro/Nano Science and Technology, Jiangsu University, Zhenjiang 212013, China.
- Center of Photovoltaic Science and Engineering, Changzhou University, Changzhou 213164, China.
| | - Xingling Shi
- School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang 212013, China.
| | - Chuncheng Liu
- Center of Micro/Nano Science and Technology, Jiangsu University, Zhenjiang 212013, China.
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Hou PJ, Ou KL, Wang CC, Huang CF, Ruslin M, Sugiatno E, Yang TS, Chou HH. Hybrid micro/nanostructural surface offering improved stress distribution and enhanced osseointegration properties of the biomedical titanium implant. J Mech Behav Biomed Mater 2017; 79:173-180. [PMID: 29306080 DOI: 10.1016/j.jmbbm.2017.11.042] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Revised: 11/09/2017] [Accepted: 11/25/2017] [Indexed: 01/24/2023]
Abstract
OBJECTIVES The aim of the present study was to investigate the surface characteristic, biomechanical behavior, hemocompatibility, bone tissue response and osseointegration of the optimal micro-arc oxidation surface-treated titanium (MST-Ti) dental implant. MATERIALS AND METHODS The surface characteristic, biomechanical behavior and hemocompatibility of the MST-Ti dental implant were performed using scanning electron microscope, finite element method, blood dripping and immersion tests. The mini-pig model was utilized to evaluate the bone tissue response and osseointegration of the MST-Ti dental implant in vivo. Data were analyzed by analysis of variance using the Student's t-test (P ≤ 0.05). RESULTS The hybrid volcano-like micro/nanoporous structure was formed on the surface of the MST-Ti dental implant. The hybrid volcano-like micro/nanoporous surface played an important role to improve the stress transfer between fixture, cortical bone and cancellous bone for the MST-Ti dental implant. Moreover, the MST-Ti implant was considered to have the outstanding hemocompatibility. In vivo testing results showed that the bone-to-implant contact (BIC) ratio significantly altered as the implant with micro/nanoporous surface. After 12 weeks of implantation, the MST-Ti dental implant group exhibited significantly higher BIC ratio than the untreated dental implant group. In addition, the MST-Ti dental implant group also presented an enhancing osseointegration, particularly in the early stages of bone healing. CONCLUSION It can be concluded that the micro-arc oxidation approach induced the formation of micro/nanoporous surface is a promising and reliable alternative surface modification for Ti dental implant applications.
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Affiliation(s)
- Ping-Jen Hou
- Graduate Institute of Biomedical Materials and Tissue Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei 110, Taiwan
| | - Keng-Liang Ou
- Department of Dentistry, Taipei Medical University Hospital, Taipei 110, Taiwan; Department of Dentistry, Taipei Medical University-Shuang Ho Hospital, New Taipei City 235, Taiwan; Department of Dentistry, Cathay General Hospital, Taipei 106, Taiwan; 3D Global Biotech Inc., New Taipei City 221, Taiwan
| | - Chin-Chieh Wang
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan
| | - Chiung-Fang Huang
- Department of Dentistry, Taipei Medical University Hospital, Taipei 110, Taiwan; School of Dental Technology, Taipei Medical University, Taipei 110, Taiwan
| | - Muhammad Ruslin
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Hasanuddin University, Makassar, Indonesia
| | - Erwan Sugiatno
- Department of Prosthodontic, Faculty of Dentistry, Universitas Gadjah Mada, Yogyakarta, Indonesia
| | - Tzu-Sen Yang
- Graduate Institute of Biomedical Materials and Tissue Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei 110, Taiwan; School of Biomedical Engineering, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan; Graduate Institute of Nanomedicine and Medical Engineering, Taipei Medical University, Taipei 110, Taiwan.
| | - Hsin-Hua Chou
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan; Department of Prosthodontic, Faculty of Dentistry, Universitas Gadjah Mada, Yogyakarta, Indonesia; Department of Dentistry, Taipei Medical University-Wan Fang Hospital, Taipei 116, Taiwan.
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9
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Schieber R, Lasserre F, Hans M, Fernández-Yagüe M, Díaz-Ricart M, Escolar G, Ginebra MP, Mücklich F, Pegueroles M. Direct Laser Interference Patterning of CoCr Alloy Surfaces to Control Endothelial Cell and Platelet Response for Cardiovascular Applications. Adv Healthc Mater 2017; 6. [PMID: 28714577 DOI: 10.1002/adhm.201700327] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2017] [Revised: 06/02/2017] [Indexed: 11/09/2022]
Abstract
The main drawbacks of cardiovascular bare-metal stents (BMS) are in-stent restenosis and stent thrombosis as a result of an incomplete endothelialization after stent implantation. Nano- and microscale modification of implant surfaces is a strategy to recover the functionality of the artery by stimulating and guiding molecular and biological processes at the implant/tissue interface. In this study, cobalt-chromium (CoCr) alloy surfaces are modified via direct laser interference patterning (DLIP) in order to create linear patterning onto CoCr surfaces with different periodicities (≈3, 10, 20, and 32 µm) and depths (≈20 and 800 nm). Changes in surface topography, chemistry, and wettability are thoroughly characterized before and after modification. Human umbilical vein endothelial cells' adhesion and spreading are similar for all patterned and plain CoCr surfaces. Moreover, high-depth series induce cell elongation, alignment, and migration along the patterned lines. Platelet adhesion and aggregation decrease in all patterned surfaces compared to CoCr control, which is associated with changes in wettability and oxide layer characteristics. Cellular studies provide evidence of the potential of DLIP topographies to foster endothelialization without enhancement of platelet adhesion, which will be of high importance when designing new BMS in the future.
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Affiliation(s)
- Romain Schieber
- Biomaterials, Biomechanics and Tissue Engineering Group; Department of Materials Science and Metallurgical Engineering; Technical University of Catalonia (UPC), EEBE; 08019, Av. Eduard Maristany 10-14 08019 Barcelona Spain
- Centre for Research in NanoEngineering (CRNE); UPC, EEBE; Av. Eduard Maristany 10-14 08019 Barcelona Spain
- Chair of Functional Materials; Faculty of Natural Sciences and Technology; Saarland University; 66123 Saarbrücken Germany
| | - Federico Lasserre
- Chair of Functional Materials; Faculty of Natural Sciences and Technology; Saarland University; 66123 Saarbrücken Germany
| | - Michael Hans
- Chair of Functional Materials; Faculty of Natural Sciences and Technology; Saarland University; 66123 Saarbrücken Germany
| | - Marc Fernández-Yagüe
- Biomaterials, Biomechanics and Tissue Engineering Group; Department of Materials Science and Metallurgical Engineering; Technical University of Catalonia (UPC), EEBE; 08019, Av. Eduard Maristany 10-14 08019 Barcelona Spain
- Centre for Research in NanoEngineering (CRNE); UPC, EEBE; Av. Eduard Maristany 10-14 08019 Barcelona Spain
| | - Maribel Díaz-Ricart
- Hemotherapy-Hemostasis Department; Centre de Diagnòstic Biomèdic; Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS); Hospital Clínic Universitat de Barcelona; 08036 Barcelona Spain
| | - Ginés Escolar
- Hemotherapy-Hemostasis Department; Centre de Diagnòstic Biomèdic; Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS); Hospital Clínic Universitat de Barcelona; 08036 Barcelona Spain
| | - Maria-Pau Ginebra
- Biomaterials, Biomechanics and Tissue Engineering Group; Department of Materials Science and Metallurgical Engineering; Technical University of Catalonia (UPC), EEBE; 08019, Av. Eduard Maristany 10-14 08019 Barcelona Spain
- Centre for Research in NanoEngineering (CRNE); UPC, EEBE; Av. Eduard Maristany 10-14 08019 Barcelona Spain
- Institute for Bioengineering of Catalonia (IBEC); 08028 Barcelona Spain
| | - Frank Mücklich
- Chair of Functional Materials; Faculty of Natural Sciences and Technology; Saarland University; 66123 Saarbrücken Germany
| | - Marta Pegueroles
- Biomaterials, Biomechanics and Tissue Engineering Group; Department of Materials Science and Metallurgical Engineering; Technical University of Catalonia (UPC), EEBE; 08019, Av. Eduard Maristany 10-14 08019 Barcelona Spain
- Centre for Research in NanoEngineering (CRNE); UPC, EEBE; Av. Eduard Maristany 10-14 08019 Barcelona Spain
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Abstract
Coating of stent surface with a biocompatible material is suggested to improve stent safety profile. A proprietary process was developed to coat titanium-nitride-oxide on the stent surface, based on plasma technology that uses the nano-synthesis of gas and metal. Preclinical in vitro and in vivo investigation confirmed blood compatibility of titanium (nitride-) oxide films. Titanium-nitride-oxide-coated stents demonstrated a better angiographic outcome, compared with bare-metal stents at mid-term follow-up; however, they failed to achieve non-inferiority for angiographic outcome versus second-generation drug-eluting stents. Observational studies showed adequate clinical outcome at mid-term follow-up. Non-randomized studies showed an outcome of titanium-nitride-oxide-coated stents comparable to - or better than - first-generation drug-eluting stents at long-term follow-up. Two randomized controlled trials demonstrated comparable efficacy outcome, and a better safety outcome of titanium-nitride-oxide-coated stents versus drug-eluting stents at long-term follow-up. Evaluation by optical coherence tomography at mid-term follow-up revealed better neointimal strut coverage associated with titanium-nitride-oxide-coated stents versus drug-eluting stents; yet, neointimal hyperplasia thickness was greater. Key messages Stents coated with titanium-nitride-oxide demonstrated biocompatibility in preclinical studies: they inhibit platelet and fibrin deposition, and reduce neointimal growth. In observational and non-randomized studies, titanium-nitride-oxide-coated stents were associated with adequate safety and efficacy outcome. In randomized trials of patients with acute coronary syndrome, titanium-nitride-oxide-coated stents were associated with a better safety outcome, compared with drug-eluting stents; efficacy outcome was comparable.
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Affiliation(s)
| | - Wail Nammas
- a Heart Center, Satakunta Central Hospital , Pori , Finland
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11
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Hsia K, Yang MJ, Chen WM, Yao CL, Lin CH, Loong CC, Huang YL, Lin YT, Lander AD, Lee H, Lu JH. Sphingosine-1-phosphate improves endothelialization with reduction of thrombosis in recellularized human umbilical vein graft by inhibiting syndecan-1 shedding in vitro. Acta Biomater 2017; 51:341-350. [PMID: 28110073 DOI: 10.1016/j.actbio.2017.01.050] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Revised: 01/16/2017] [Accepted: 01/17/2017] [Indexed: 12/31/2022]
Abstract
Sphingosine-1-phosphate (S1P) has been known to promote endothelial cell (EC) proliferation and protect Syndecan-1 (SDC1) from shedding, thereby maintaining this antithrombotic signal. In the present study, we investigated the effect of S1P in the construction of a functional tissue-engineered blood vessel by using human endothelial cells and decellularized human umbilical vein (DHUV) scaffolds. Both human umbilical vein endothelial cells (HUVEC) and human cord blood derived endothelial progenitor cells (EPC) were seeded onto the scaffold with or without the S1P treatment. The efficacy of re-cellularization was determined by using the fluorescent marker CellTracker CMFDA and anti-CD31 immunostaining. The antithrombotic effect of S1P was examined by the anti-aggregation tests measuring platelet adherence and clotting time. Finally, we altered the expression of SDC1, a major glycocalyx protein on the endothelial cell surface, using MMP-7 digestion to explore its role using platelet adhesion tests in vitro. The result showed that S1P enhanced the attachment of HUVEC and EPC. Based on the anti-aggregation tests, S1P-treated HUVEC recellularized vessels when grafted showed reduced thrombus formation compared to controls. Our results also identified reduced SDC1 shedding from HUVEC responsible for inhibition of platelet adherence. However, no significant antithrombogenic effect of S1P was observed on EPC. In conclusion, S1P is an effective agent capable of decreasing thrombotic risk in engineered blood vessel grafts. STATEMENT OF SIGNIFICANCE Sphingosine-1phosphate (S1P) is a low molecular-weight phospholipid mediator that regulates diverse biological activities of endothelial cell, including survival, proliferation, cell barrier integrity, and also influences the development of the vascular system. Based on these characters, we the first time to use it as an additive during the process of a small caliber blood vessel construction by decellularized human umbilical vein and endothelial cell/endothelial progenitor. We further explored the function and mechanism of S1P in promoting revascularization and protection against thrombosis in this tissue engineered vascular grafts. The results showed that S1P could not only accelerate the generation but also reduce thrombus formation of small caliber blood vessel.
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12
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Huang Q, Yang Y, Zheng D, Song R, Zhang Y, Jiang P, Vogler EA, Lin C. Effect of construction of TiO 2 nanotubes on platelet behaviors: Structure-property relationships. Acta Biomater 2017; 51:505-512. [PMID: 28093367 DOI: 10.1016/j.actbio.2017.01.044] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Revised: 12/27/2016] [Accepted: 01/12/2017] [Indexed: 12/12/2022]
Abstract
Blood compatibility of TiO2 nanotubes (TNTs) has been assessed in rabbit platelet-rich plasma (PRP), which combines activation of both blood plasma coagulation and platelets. We find that (i) amorphous TiO2 nanotubes (TNTs) with relatively larger outer diameters led to reduced platelet adhesion/activation, (ii) TNTs with relatively smaller outer diameters in a predominately rutile phase also inhibited platelet adhesion and activation, and (iii) a pervasive fibrin network formed on larger outer diameter TNTs in a predominately anatase phase. Thus, this study suggests that combined effect of crystalline phase and surface chemistry controls blood-contact behavior of TNTs. A more comprehensive mechanism is proposed for understanding hemocompatibility of TiO2 which might prove helpful as a guide to prospective design of TiO2-based biomaterials. STATEMENT OF SIGNIFICANCE To realize optimal design and construction of biomaterials with desired properties for blood contact materials, a comprehensive understanding of structure-property relationships is required. In the existing literature, TiO2 nanotube has been reported to be a good candidate for biomedical applications. However, it is noticeable that the blood compatibility of TiO2 nanotubes (TNTs) remains obscure or even inconsistent in the previously published works. The inconsistency could derive from different research protocols, material properties or blood sources. Thus, a thorough investigation of the effect of surface properties on blood compatibility is crucial to the development of titanium based materials. In this paper, we explored the effect of surface properties on the response of platelet-rich plasma, especially surface morphology, chemistry, wettability and crystalline phase. The results indicated that crystalline phase was a dominant factor in platelet behaviors. Reduced adhesion and activation of platelets were observed on amorphous and rutile dominated TNTs, whereas anatase dominated TNTs activated the formation of fibrin network. We further proposed a hypothetical mechanism for better understanding of how surface properties affect the response of platelet-rich plasma. Therefore, this study expands the fundamental understanding of the structure-property relationships of titanium based materials.
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Affiliation(s)
- Qiaoling Huang
- State Key Laboratory for Physical Chemistry of Solid Surfaces, and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China; Research Institute for Biomimetics and Soft Matter, and Department of Physics, School of Physics and Mechanical & Electrical Engineering, Xiamen University, Xiamen 361005, China; Shenzhen Research Institute of Xiamen University, Shenzhen 518057, China
| | - Yun Yang
- Beijing Medical Implant Engineering Research Center, Beijing 100082, China; Beijing Engineering Laboratory of Functional Medical Materials and Devices, Beijing 100082, China
| | - Dajiang Zheng
- State Key Laboratory for Physical Chemistry of Solid Surfaces, and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Ran Song
- State Key Laboratory for Physical Chemistry of Solid Surfaces, and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Yanmei Zhang
- Beijing Medical Implant Engineering Research Center, Beijing 100082, China; Beijing Engineering Laboratory of Functional Medical Materials and Devices, Beijing 100082, China
| | - Pinliang Jiang
- State Key Laboratory for Physical Chemistry of Solid Surfaces, and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Erwin A Vogler
- Department of Materials Science and Engineering and Bioengineering, The Pennsylvania State University, University Park, PA 16802, USA
| | - Changjian Lin
- State Key Laboratory for Physical Chemistry of Solid Surfaces, and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China; Research Institute for Biomimetics and Soft Matter, and Department of Physics, School of Physics and Mechanical & Electrical Engineering, Xiamen University, Xiamen 361005, China; Beijing Medical Implant Engineering Research Center, Beijing 100082, China; Beijing Engineering Laboratory of Functional Medical Materials and Devices, Beijing 100082, China.
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Research of StemBios Cell Therapy on Dental Implants Containing Nanostructured Surfaces: Biomechanical Behaviors, Microstructural Characteristics, and Clinical Trial. IMPLANT DENT 2017; 25:63-73. [PMID: 26473440 DOI: 10.1097/id.0000000000000337] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
PURPOSE The aim of the present study was to examine the osseointegration in low-density bone tissue for SLAffinity-treated implants with StemBios (SB) cell therapy. MATERIALS AND METHODS The morphologies of SLAffinity-treated surfaces were characterized using scanning electron microscopy. In the animal model, implants were installed in the mandibular canine-premolar area of 12 miniature pigs. Each pig received 3 implants of machine, sand blasted, large grit, and acid etched, and SLAffinity-treated implants. In the clinical trial, 10 patients received 1 SLAffinity-treated implant in the maxilla in the posterior area and 1 patient with low bone tissue density received 2 SLAffinity-treated implants with SB cell therapy. Resonance frequency analysis and computed tomography were assessed monthly over the first 3 months after implant placement. RESULTS The results demonstrated that surface treatment significantly affected early osseointegration in patients who received SB cell therapy. SB cell therapy transferred the stress caused by the implant more uniformly, and the stress decreased with healing time. SLAffinity-treated implants also proved clinically successful after the 3 months. CONCLUSION The SLAffinity treatments enhanced osseointegration significantly, especially at early stages of bone tissue healing with SB cell therapy.
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Rapid Osseointegration of Titanium Implant With Innovative Nanoporous Surface Modification: Animal Model and Clinical Trial. IMPLANT DENT 2017; 24:441-7. [PMID: 25946663 DOI: 10.1097/id.0000000000000258] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVES SLAffinity is the hybrid topography consisting of micropits and nanoporous TiO2 layers through electrochemical oxidation to mimic the natural bony environment. The aim of this study was to examine the rate of osseointegration in animal models and to further investigate the stability for implants with SLAffinity-treated surface in the clinical trial. MATERIALS AND METHODS Implants were installed in the mandibular canine-premolar area of 12 miniature pigs. Each pig received 2 implants with the same shapes but with different chemical surfaces. In the clinical trial, 25 patients were included. Each patient received 1 SLAffinity-treated implant on the posterior area of either arch. Resonance frequency analysis and computed tomography were assessed weekly over the first 12 weeks after implant placement. RESULTS The results found that surface treatment did affect the bone-to-implant contact (BIC) significantly. Comparison of BIC at 3 weeks in animal study showed that the SLAffinity-treated implants presented significantly higher values than machine surface implants. SLAffinity-treated implants also proved clinically successful through 12 months, ready for prosthodontic restoration. CONCLUSION The effect of SLAffinity treatments enhanced osseointegration significantly, especially at early stages of bone healing. Clinical trial finding, furthermore, ensured that the SLAffinity treatment was a reliable surface modification alternative.
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Chiang HJ, Hsu HJ, Peng PW, Wu CZ, Ou KL, Cheng HY, Walinski CJ, Sugiatno E. Early bone response to machined, sandblasting acid etching (SLA) and novel surface-functionalization (SLAffinity) titanium implants: characterization, biomechanical analysis and histological evaluation in pigs. J Biomed Mater Res A 2015; 104:397-405. [PMID: 26418567 DOI: 10.1002/jbm.a.35577] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2015] [Revised: 09/17/2015] [Accepted: 09/24/2015] [Indexed: 11/08/2022]
Abstract
The purpose of the present study was to examine early tissue response and osseointegration in the animal model. The surface morphologies of SLAffinity were characterized using scanning electron microscopy and atomic force microscopy. The microstructures were examined by X-ray diffraction, and hardness was measured by nanoindentation. Moreover, the safety and toxicity properties were evaluated using computer-aided programs and cell cytotoxicity assays. In the animal model, implants were installed in the mandibular canine-premolar area of 12 miniature pigs. Each pig received three implants: machine, sandblasted, large grit, acid-etched, and SLAffinity-treated implants. The results showed that surface treatment did affect bone-to-implant contact (BIC) significantly. At 3 weeks, the SLAffinity-treated implants were found to present significantly higher BIC values than the untreated implants. The SLAffinity treatments enhanced osseointegration significantly, especially at early stages of bone tissue healing. As described above, the results of the present study demonstrate that the SLAffinity treatment is a reliable surface modification method.
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Affiliation(s)
- Hsi-Jen Chiang
- Graduate Institute of Biomedical Materials and Tissue Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei 110, Taiwan.,Research Center for Biomedical Devices and Prototyping Production, Taipei Medical University, Taipei 110, Taiwan
| | - Heng-Jui Hsu
- Research Center for Biomedical Devices and Prototyping Production, Taipei Medical University, Taipei 110, Taiwan.,School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan
| | - Pei-Wen Peng
- Research Center for Biomedical Devices and Prototyping Production, Taipei Medical University, Taipei 110, Taiwan.,School of Dental Technology, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan
| | - Ching-Zong Wu
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan.,Department of Dentistry, Taipei Medical University Hospital, Taipei 110, Taiwan
| | - Keng-Liang Ou
- Research Center for Biomedical Devices and Prototyping Production, Taipei Medical University, Taipei 110, Taiwan.,School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan.,Research Center for Biomedical Implants and Microsurgery Devices, Taipei Medical University, Taipei 110, Taiwan.,Department of Dentistry, Taipei Medical University-Shuang Ho Hospital, Taipei 235, Taiwan
| | - Han-Yi Cheng
- Graduate Institute of Biomedical Materials and Tissue Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei 110, Taiwan.,Research Center for Biomedical Devices and Prototyping Production, Taipei Medical University, Taipei 110, Taiwan.,Research Center for Biomedical Implants and Microsurgery Devices, Taipei Medical University, Taipei 110, Taiwan
| | - Christopher J Walinski
- Research Center for Biomedical Devices and Prototyping Production, Taipei Medical University, Taipei 110, Taiwan.,College of Dentistry, University of Tennessee Health Sciences Center, 875 Union Avenue Memphis, TN 38103, USA.,Department of Restorative Dentistry Director of Laser Dentistry, 875 Union Avenue Memphis, TN 38103, USA
| | - Erwan Sugiatno
- Research Center for Biomedical Devices and Prototyping Production, Taipei Medical University, Taipei 110, Taiwan.,Department of Prosthodontic, Faculty of Dentistry, Universitas Gadjah Mada, Yogyakarta, Indonesia
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Mahapatro A. Bio-functional nano-coatings on metallic biomaterials. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 55:227-51. [DOI: 10.1016/j.msec.2015.05.018] [Citation(s) in RCA: 81] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2014] [Revised: 03/20/2015] [Accepted: 05/07/2015] [Indexed: 11/28/2022]
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17
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Mariscal-Muñoz E, Costa CAS, Tavares HS, Bianchi J, Hebling J, Machado JPB, Lerner UH, Souza PPC. Osteoblast differentiation is enhanced by a nano-to-micro hybrid titanium surface created by Yb:YAG laser irradiation. Clin Oral Investig 2015. [PMID: 26224513 DOI: 10.1007/s00784-015-1533-1] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
OBJECTIVES The aim of this study was to analyze the capacity of a new modified laser surface to stimulate calvarial osteoblasts isolated from neonatal mouse bones to differentiate and form mineralized nodules. METHODS Titanium discs were subjectezd or not to laser irradiation according to specific parameters and characterized. Osteoblasts isolated from neonatal mouse calvaria were cultured over the discs, and the capacity of these cells to proliferate (MTT assay), form mineralized nodules (Alizarin red assay), and enhance alkaline phosphatase activity (ALPase activity) was analyzed. Real-time PCR was used for quantification of gene expression. RESULTS Laser-irradiated titanium discs (L) presented a rough nano-to-micrometric oxidized surface contrasting with the smooth pattern on polished discs (P). The Ra on the micrometric level increased from 0.32 ± 0.01 μm on P surfaces to 10.57 ± 0.39 μm on L surfaces. When compared with P, L promoted changes in osteoblast morphology, increased mineralized nodule formation in osteoblasts cultured on the surfaces for 14 days, and enhanced ALPase activity at days 7 and 14. Transcription factors triggering osteoblast differentiation (Runx2 and Sp7) and genes encoding the bone extracellular matrix proteins collagen type-1 (Col1a1), osteopontin (Spp1), and osteocalcin (Bglap) were upregulated in cells on L surfaces compared with those on P surfaces at days 1-14. CONCLUSION Laser treatment of titanium surfaces created a rough surface that stimulated osteoblast differentiation. CLINICAL RELEVANCE Laser treatment of titanium generates a reproducible and efficient surface triggering osteoblast differentiation that can be of importance for osteointegration.
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Affiliation(s)
- Eduardo Mariscal-Muñoz
- Department of Physiology and Pathology, Faculty of Dentistry at Araraquara, Univ. Estadual Paulista-UNESP, Araraquara, São Paulo, 14801-903, Brazil
| | - Carlos A S Costa
- Department of Physiology and Pathology, Faculty of Dentistry at Araraquara, Univ. Estadual Paulista-UNESP, Araraquara, São Paulo, 14801-903, Brazil
| | - Hewerson S Tavares
- Department of Physiology and Pathology, Faculty of Dentistry at Araraquara, Univ. Estadual Paulista-UNESP, Araraquara, São Paulo, 14801-903, Brazil
| | - Jonas Bianchi
- Department of Physiology and Pathology, Faculty of Dentistry at Araraquara, Univ. Estadual Paulista-UNESP, Araraquara, São Paulo, 14801-903, Brazil
| | - Josimeri Hebling
- Department of Orthodontics and Pediatric Dentistry, Faculty of Dentistry at Araraquara, Univ. Estadual Paulista-UNESP, Araraquara, São Paulo, 14801-903, Brazil
| | - João P B Machado
- National Institute for Space Research-INPE, São José dos Campos, São Paulo, 12227-010, Brazil
| | - Ulf H Lerner
- Umeå University, Umeå, S-901 87, Sweden.,Sahlgrenska Academy at University of Gothenburg, Gothenburg, S-405 30, Sweden
| | - Pedro P C Souza
- Department of Physiology and Pathology, Faculty of Dentistry at Araraquara, Univ. Estadual Paulista-UNESP, Araraquara, São Paulo, 14801-903, Brazil.
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Evaluation of the Haemocompatibility of TiO2 Coatings Obtained by Anodic Oxidation of Ti-6Al-4V. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.mspro.2015.04.086] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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19
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Reduced platelet adhesion and improved corrosion resistance of superhydrophobic TiO2-nanotube-coated 316L stainless steel. Colloids Surf B Biointerfaces 2015; 125:134-41. [DOI: 10.1016/j.colsurfb.2014.11.028] [Citation(s) in RCA: 89] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2014] [Revised: 11/05/2014] [Accepted: 11/19/2014] [Indexed: 12/27/2022]
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20
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Micro-Raman spectroscopic analysis of TiO2 phases on the root surfaces of commercial dental implants. Dent Mater 2014; 30:861-7. [DOI: 10.1016/j.dental.2014.05.030] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2014] [Revised: 04/21/2014] [Accepted: 05/21/2014] [Indexed: 11/19/2022]
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21
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Liu R, Lei T, Dusevich V, Yao X, Liu Y, Walker MP, Wang Y, Ye L. Surface Characteristics and Cell Adhesion: A Comparative Study of Four Commercial Dental Implants. J Prosthodont 2013; 22:641-51. [DOI: 10.1111/jopr.12063] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/24/2013] [Indexed: 11/30/2022] Open
Affiliation(s)
- Ruohong Liu
- Department of Restorative Dentistry, University of Missouri-Kansas City School of Dentistry; Kansas City MO
| | - Tianhua Lei
- Department of Oral Biology, University of Missouri-Kansas City School of Dentistry; Kansas City MO
| | - Vladimir Dusevich
- Department of Oral Biology, University of Missouri-Kansas City School of Dentistry; Kansas City MO
| | - Xiamei Yao
- Department of Oral Biology, University of Missouri-Kansas City School of Dentistry; Kansas City MO
| | - Ying Liu
- Department of Oral Biology, University of Missouri-Kansas City School of Dentistry; Kansas City MO
| | - Mary P. Walker
- Department of Restorative Dentistry, University of Missouri-Kansas City School of Dentistry; Kansas City MO
- Department of Oral Biology, University of Missouri-Kansas City School of Dentistry; Kansas City MO
| | - Yong Wang
- Department of Oral Biology, University of Missouri-Kansas City School of Dentistry; Kansas City MO
| | - Ling Ye
- Department of Oral Biology, University of Missouri-Kansas City School of Dentistry; Kansas City MO
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Abstract
This review outlines the current understanding of the interactions of titanium and its alloys with blood components, and the ways in which surface modification techniques can be used to alter the surface physicochemical and topographical features that determine blood-material interactions. Surface modification of the spontaneously formed titanium oxide surface layer is a highly attractive means of improving haemocompatibility without forgoing the advantageous mechanical and physical properties of titanium and its alloys. A number of surface modification techniques and treatment processes are discussed in the context of enhancing the haemocompatibility of titanium and its alloys, with a view to optimising the clinical efficacy of blood-contacting devices and materials.
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Arias LF, Kleiman A, Heredia E, Márquez A. Rutile titanium dioxide films deposited with a vacuum arc at different temperatures. ACTA ACUST UNITED AC 2012. [DOI: 10.1088/1742-6596/370/1/012027] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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24
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Lu T, Qiao Y, Liu X. Surface modification of biomaterials using plasma immersion ion implantation and deposition. Interface Focus 2012; 2:325-36. [PMID: 23741609 DOI: 10.1098/rsfs.2012.0003] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2012] [Accepted: 02/22/2012] [Indexed: 11/12/2022] Open
Abstract
Although remarkable progress has been made on biomaterial research, the ideal biomaterial that satisfies all the technical requirements and biological functions is not available up to now. Surface modification seems to be a more economic and efficient way to adjust existing conventional biomaterials to meet the current and ever-evolving clinical needs. From an industrial perspective, plasma immersion ion implantation and deposition (PIII&D) is an attractive method for biomaterials owing to its capability of treating objects with irregular shapes, as well as the control of coating composition. It is well acknowledged that the physico-chemical characteristics of biomaterials are the decisive factors greatly affecting the biological responses of biomaterials including bioactivity, haemocompatibility and antibacterial activity. Here, we mainly review the recent advances in surface modification of biomaterials via PIII&D technology, especially titanium alloys and polymers used for orthopaedic, dental and cardiovascular implants. Moreover, the variations of biological performances depending on the physico-chemical properties of modified biomaterials will be discussed.
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Affiliation(s)
- Tao Lu
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics , Chinese Academy of Sciences , Shanghai 200050 , People's Republic of China
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25
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Na Y, Wang Q, Nakano K, Tomida M, Kawakami T, Zhang Y. L929 Cell Adhesion on the Surface Oxidized NiTi Shape Memory Alloy. J HARD TISSUE BIOL 2011. [DOI: 10.2485/jhtb.20.53] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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26
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Marchi J, Ussui V, Delfino CS, Bressiani AHA, Marques MM. Analysis in vitro of the cytotoxicity of potential implant materials. I: Zirconia-titania sintered ceramics. J Biomed Mater Res B Appl Biomater 2010; 94:305-311. [PMID: 20586079 DOI: 10.1002/jbm.b.31652] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Zirconia (ZrO2) is a bioinert, strong, and tough ceramic, while titania (TiO2) is bioactive but has poor mechanical properties. It is expected that ZrO2-TiO2 mixed ceramics incorporate the individual properties of both ceramics, so that this material would exhibit better biological properties. Thus, the objective of this study was to compare the biocompatibility properties of ZrO2-TiO2 mixed ceramics. Sintered ceramics pellets, obtained from powders of TiO2, ZrO2, and three different ZrO2-TiO2 mixed oxides were used. Roughnesses, X-ray diffraction, microstructure through SEM, hardness, and DRIFT characterizations were performed. For biocompatibility analysis cultured FMM1 fibroblasts were plated on the top of disks and counted in SEM micrographs 1 and 2 days later. Data were compared by ANOVA complemented by Tukey's test. All samples presented high densities and similar microstructure. The H2O content in the mixed ceramics was more evident than in pure ceramics. The number of fibroblasts attached to the disks increased significantly independently of the experimental group. The cell growth on the top of the ZrO2-TiO2 samples was similar and significantly higher than those of TiO2 and ZrO2 samples. Our in vitro experiments showed that the ZrO2-TiO2 sintered ceramics are biocompatible allowing faster cell growth than pure oxides ceramics. The improvement of hardness is proportional to the ZrO2 content. Thus, the ZrO2-TiO2 sintered ceramics could be considered as potential implant material.
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Affiliation(s)
- Juliana Marchi
- Centro de Ciências Naturais e Humanas-CCNH, Universidade Federal do ABC, UFABC, Santo André, SP, Brazil
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Ye SH, Johnson CA, Woolley JR, Snyder TA, Gamble LJ, Wagner WR. Covalent surface modification of a titanium alloy with a phosphorylcholine-containing copolymer for reduced thrombogenicity in cardiovascular devices. J Biomed Mater Res A 2009; 91:18-28. [PMID: 18683221 PMCID: PMC3402171 DOI: 10.1002/jbm.a.32184] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Our objective was to develop a surface modification strategy for a titanium alloy (TiAl6V4) to provide thromboresistance for surfaces in rigorous blood-contacting cardiovascular applications, such as that found in ventricular assist devices. We hypothesized that this could be accomplished by the covalent attachment of a phospholipid polymer, poly(2-methacryloyloxyethylphosphorylcholine (MPC)-co-methacryl acid) (PMA). TiAl6V4 was H2O plasma treated by radio frequency glow discharge, silanated with 3-aminopropyltriethoxysilane (APS), and ammonia plasma treated to increase surface reactivity. The TiAl6V4 surface was then modified with PMA via a condensation reaction between the amino groups on the TiAl6V4 surface and the carboxyl groups on PMA. The surface composition was verified by X-ray photoelectron spectroscopy, confirming successful modification of the TiAl6V4 surfaces with APS and PMA as evidenced by increased Si and P. Plasma treatments with H2O and ammonia were effective at further increasing the surface reactivity of TiAl6V4 as evidenced by increased surface PMA. The adsorption of ovine fibrinogen onto PMA-modified surfaces was reduced relative to unmodified surfaces, and in vitro ovine blood contact through a rocking test revealed marked reductions in platelet deposition and bulk phase platelet activation relative to unmodified TiAl6V4 and polystyrene controls. The results indicate that the PMA-modification scheme for TiAl6V4 surfaces offers a potential pathway to improve the thromboresistance of the blood-contacting surfaces of cardiovascular devices.
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Affiliation(s)
- Sang-Ho Ye
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania 15219, USA
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Abstract
Ion implantation, a common technology in semiconductor processing, has been applied to biomaterials since the 1960s. Using energetic ion bombardment, a general term which includes conventional ion implantation plasma immersion ion implantation (PIII) and ion beam assisted thin film deposition, functionalization of surfaces is possible. By varying and adjusting the process parameters, several surface properties can be attuned simultaneously. Extensive research details improvements in the biocompatibility, mainly by reducing corrosion rates and increasing wear resistance after surface modification. Recently, enhanced bioactivity strongly correlated with the surface topography and less with the surface chemistry has been reported, with an increased roughness on the nanometer scale induced by self-organisation processes during ion bombardment leading to faster cellular adhesion processes.
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Wang QZ, Chen XG, Li ZX, Wang S, Liu CS, Meng XH, Liu CG, Lv YH, Yu LJ. Preparation and blood coagulation evaluation of chitosan microspheres. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2008; 19:1371-7. [PMID: 17914628 DOI: 10.1007/s10856-007-3243-y] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2006] [Accepted: 07/26/2007] [Indexed: 05/17/2023]
Abstract
Cross-linked chitosan microspheres (40-100 microm) with smooth surface were prepared by the methods of emulsification and ethanol coagulant. FTIR results showed that the cross-linking reaction occurred on the amino groups of chitosan molecules. The swelling characteristic of chitosan microspheres was influenced by the environment pH, being generally greater at low rather than higher pH values. The coagulation properties of chitosan microspheres were evaluated by dynamic blood clotting, platelet adhesion and activation, erythrocyte adhesion, hemolysis, and protein absorption assays. Chitosan microspheres can shorten the clotting time and induce the adhesion and activation of platelets. But the shortening of clotting time by chitosan microspheres may be related to not only platelet aggregation, but also erythrocyte aggregation. Take together, chitosan microspheres may be potential use as thrombospheres.
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Affiliation(s)
- Qi Zhao Wang
- College of Marine Life Science, Ocean University of China, 5# Yushan Road, Qingdao 266003, P.R. China
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HUANG N, LENG Y, YANG P, WANG J, CHEN J, WAN G. Biomedical Applications of Plasma and Ion Beam Processing. ACTA ACUST UNITED AC 2008. [DOI: 10.3131/jvsj2.51.81] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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31
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Werner C, Maitz MF, Sperling C. Current strategies towards hemocompatible coatings. ACTA ACUST UNITED AC 2007. [DOI: 10.1039/b703416b] [Citation(s) in RCA: 217] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Huang N, Yang P, Leng YX, Chen JY, Sun H, Wang J, Wang GJ, Ding PD, Xi TF, Leng Y. Hemocompatibility of titanium oxide films. Biomaterials 2003; 24:2177-87. [PMID: 12699653 DOI: 10.1016/s0142-9612(03)00046-2] [Citation(s) in RCA: 168] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Hemocompatibility is a key property of biomaterials that come in contact with blood. Surface modification has shown great potential for improving the hemocompatibility of biomedical materials and devices. In this paper, we describe our work of improving hemocompatibility with Ti-O thin films prepared by plasma immersion ion implantation and deposition and by sputtering. The structure and surface chemical and physical properties of the films were characterized by X-ray diffraction, Auger electron spectroscopy, atomic force microscopy (AFM), contact angle measurement, and Hall effect measurement. The behavior of fibrinogen adsorption was investigated by 125I radioactive isotope labeling and AFM. Systematic evaluation of hemocompatibility, including in vitro clotting time, thrombin time, prethrombin time, platelet adhesion, and in vivo implantation into dog's ventral aorta or right auricle from 17 to 90 days, proved that Ti-O films have excellent hemocompatibility. It is suggested that the significantly lower interface tension between Ti-O films and blood and plasma proteins and the semiconducting nature of Ti-O films give them their improved hemocompatibility.
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Affiliation(s)
- N Huang
- Institute of Biomaterials and Surface Engineering, School of Materials Sciences and Engineering, Southwest Jiaotong University, Chengdu, Sichuan 610031, China.
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Maitz MF, Pham MT, Wieser E, Tsyganov I. Blood compatibility of titanium oxides with various crystal structure and element doping. J Biomater Appl 2003; 17:303-19. [PMID: 12797422 DOI: 10.1177/0885328203017004005] [Citation(s) in RCA: 74] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
BACKGROUND Titanium oxides are known to be good hemocompatible, therefore they are suggested as coatings for blood contacting implants. But little is known about the influence of physical characteristics like crystal structure, roughness and electronic state on the activation of blood platelets and the blood clotting cascade. METHODS Titanium oxide films were produced by metal plasma deposition and implantation in the form of rutile, crystalline and nanocrystalline anatase + brookite and amorphous TiO2. The redox potential was reduced by implantation of chromium ions, the Fermi level of the semiconductive oxide was shifted by ion implantation of the electron donor phosphorous. Hemocompatibility was determined by measuring the adhesion of blood platelets, their P-selectine expression, and of the blood clotting time on these samples. RESULTS The crystalline titanium oxides had a slightly higher activation of the clotting cascade but lower platelet adhesion than nanocrystalline and amorphous titanium oxides. The surface roughness below 50 nm had no obvious effect. Both, implantation of phosphorous or chromium ions, strongly reduced the activation of the clotting cascade, but only the phosphorous implanted surface also showed a reduced platelet activation, whereas platelet adhesion and activation was strongly increased on the chromium implanted surfaces. CONCLUSION Phosphorous doping of rutile TiO2 can increase its hemocompatibility, both concerning blood platelets and blood clotting cascade, but the biochemical mechanism has to be worked out.
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Affiliation(s)
- Manfred F Maitz
- Forschungszentrum Rossendorf, Institute for Ion Beam Physics and Materials Research, P.O. Box 51 01 19, 01314 Dresden, Germany.
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Mändl S, Sader R, Thorwarth G, Krause D, Zeilhofer HF, Horch HH, Rauschenbach B. Investigation on plasma immersion ion implantation treated medical implants. BIOMOLECULAR ENGINEERING 2002; 19:129-32. [PMID: 12202173 DOI: 10.1016/s1389-0344(02)00025-4] [Citation(s) in RCA: 59] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
In this work the biocompatibility of osteosynsthesis plates treated with plasma immersion ion implantation (PIII) was tested using a rat model. Small rods (Ø 0.9 mm, and length 10 mm) prepared from different materials-pure Ti, anodised Ti, and two NiTi alloys (SE 508, and SM 495)-were implanted with oxygen by PIII to form a rutile surface layer and subsequently inserted into rat femurs, together with a control group of untreated samples. The results of the biomechanical tests correlate with the histological results, and show that plasma immersion ion implantation leads to an increase of biocompatibility and osseointegration of titanium and NiTi, albeit no improvement of the (bad) biocompatibility of the anodised Ti. Despite the layer thickness of up to 0.5 microm a strong influence of the base material is still present.
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Affiliation(s)
- S Mändl
- Institut für Oberflächenmodifizierung, Permoserstr. 15, 04303 Leipzig, Germany.
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Chen JY, Leng YX, Tian XB, Wang LP, Huang N, Chu PK, Yang P. Antithrombogenic investigation of surface energy and optical bandgap and hemocompatibility mechanism of Ti(Ta(+5))O2 thin films. Biomaterials 2002; 23:2545-52. [PMID: 12033602 DOI: 10.1016/s0142-9612(01)00389-1] [Citation(s) in RCA: 141] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Recent improvements in the antithrombogenic properties of blood contacting biomaterials permit a hybrid design of layers for biomedical applications such as artificial heart valves and stents. Using magnetron sputtering and thermal oxidation, titanium oxide thin films containing tantalum. Ti(Ta(+5))O2, are fabricated to meet the challenge of enhanced hemocompatibility. The blood compatibility is evaluated in vitro by clotting time and platelet adhesion measurement, and in vivo experiments are also conducted. The Ti(Ta(+5))O2 films exhibit attractive blood compatibility exceeding that of low isotropic pyrolytic carbon. Physical properties such as surface energy and semiconductivity are found to play important roles. Our calculated results reveal that the smaller surface force gamma(s) of the film and the smaller blood film interfacial tension gamma(c,blood) are partially responsible for the enhancement of the blood compatibility. Based on the optical bandgap model, the film possesses better hemocompatibility because its optical bandgap of 3.2 eV is wider than that of fibrinogen having a bandgap of 1.8 eV. These factors result in thinner protein layers on the film surface, less protein denaturing, and overall excellent antithrombogenic properties.
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Affiliation(s)
- J Y Chen
- Department of Applied Physics and Materials Science, City University of Hong Kong, Kowloon, Hong Kong, China
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Zhang F, Zheng Z, Chen Y, Liu X, Chen A, Jiang Z. In vivo investigation of blood compatibility of titanium oxide films. JOURNAL OF BIOMEDICAL MATERIALS RESEARCH 1998; 42:128-33. [PMID: 9740015 DOI: 10.1002/(sici)1097-4636(199810)42:1<128::aid-jbm16>3.0.co;2-h] [Citation(s) in RCA: 60] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Titanium oxide films were synthesized by ionbeam-enhanced deposition. The films were prepared by depositing titanium atoms and simultaneously bombarding them with Xe+ ions at an energy of 40 keV in an O2 environment. An in vivo investigation, which entailed implanting low-temperature isotropic pyrolytic carbon (LTI carbon) cylinders, widely used to fabricate artificial heart valves, and titanium-oxide-coated LTI carbon cylinders with diameters of 5 mm and thicknesses of 0.5 mm into the ventral aorta of dogs for 14 days, showed that the amount of thrombus on the titanium-oxide-coated LTI carbon was much less than that formed on the surface of LTI carbon alone. Scanning electron microscopy (SEM) was used to observe the morphology of thrombus. On the titanium oxide films no platelet aggregation was found, almost no red blood cells were damaged, and almost no fibrin was found on the surface. However, all three characteristics were found on the surface of LTI carbon alone, proving that the blood compatibility of titanium oxide films is better than that of LTI carbon and titanium-oxide-coated LTI carbon.
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Affiliation(s)
- F Zhang
- Ion Beam Laboratory, Shanghai Institute of Metallurgy, Chinese Academy of Sciences, PR China
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Xianghuai L, Zhihong Z, Zhuyao Z, Nan H, Ping Y, Guanjun C. Surface modification of titanium based biomaterials by ion beam. J Biomater Appl 1996; 10:330-7. [PMID: 8859404 DOI: 10.1177/088532829601000403] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Ion beam enhanced deposition (IBED) was adopted to synthesize biocompatible titanium oxide film. Structure characteristics of titanium oxide film were investigated by RBS, AES, and XRD. The blood compatibility of the titanium oxide film was studied by measurements of blood clotting time and platelet adhesion. The results show that the anticoagulation property of titanium oxide film is improved significantly. The mechanism of anticoagulation of the titanium oxide film was discussed.
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Affiliation(s)
- L Xianghuai
- Ion Beam Laboratory, Shanghai Institute of Metallurgy, Chinese Academy of Sciences, P. R. China
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