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Rabel K, Nath AJ, Nold J, Spies BC, Wesemann C, Altmann B, Adolfsson E, Witkowski S, Tomakidi P, Steinberg T. Analysis of soft tissue integration-supportive cell functions in gingival fibroblasts cultured on 3D printed biomaterials for oral implant-supported prostheses. J Biomed Mater Res A 2024. [PMID: 38251807 DOI: 10.1002/jbm.a.37675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 12/20/2023] [Accepted: 01/08/2024] [Indexed: 01/23/2024]
Abstract
To date, it is unknown whether 3D printed fixed oral implant-supported prostheses can achieve comparable soft tissue integration (STI) to clinically established subtractively manufactured counterparts. STI is mediated among others by gingival fibroblasts (GFs) and is modulated by biomaterial surface characteristics. Therefore, the aim of the present work was to investigate the GF response of a 3D printed methacrylate photopolymer and a hybrid ceramic-filled methacrylate photopolymer for fixed implant-supported prostheses in the sense of supporting an STI. Subtractively manufactured samples made from methacrylate polymer and hybrid ceramic were evaluated for comparison and samples from yttria-stabilized tetragonal zirconia polycrystal (3Y-TZP), comprising well documented biocompatibility, served as control. Surface topography was analyzed by scanning electron microscopy and interferometry, elemental composition by energy-dispersive x-ray spectroscopy, and wettability by contact angle measurement. The response of GFs obtained from five donors was examined in terms of membrane integrity, adhesion, morphogenesis, metabolic activity, and proliferation behavior by a lactate-dehydrogenase assay, fluorescent staining, a resazurin-based assay, and DNA quantification. The results revealed all surfaces were smooth and hydrophilic. GF adhesion, metabolic activity and proliferation were impaired by 3D printed biomaterials compared to subtractively manufactured comparison surfaces and the 3Y-TZP control, whereas membrane integrity was comparable. Within the limits of the present investigation, it was concluded that subtractively manufactured surfaces are superior compared to 3D printed surfaces to support STI. For the development of biologically optimized 3D printable biomaterials, consecutive studies will focus on the improvement of cytocompatibility and the synthesis of STI-relevant extracellular matrix constituents.
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Affiliation(s)
- Kerstin Rabel
- Department of Prosthetic Dentistry, Center for Dental Medicine, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Amélie Joséphine Nath
- Department of Prosthetic Dentistry, Center for Dental Medicine, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
- Department of Oral Biotechnology, Center for Dental Medicine, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Julian Nold
- Department of Prosthetic Dentistry, Center for Dental Medicine, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Benedikt C Spies
- Department of Prosthetic Dentistry, Center for Dental Medicine, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Christian Wesemann
- Department of Prosthetic Dentistry, Center for Dental Medicine, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Brigitte Altmann
- Department of Prosthetic Dentistry, Center for Dental Medicine, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
- G.E.R.N Research Center for Tissue Replacement, Regeneration and Neogenesis, Department of Prosthetic Dentistry, Center for Dental Medicine, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Erik Adolfsson
- Division Materials and Production-RISE Research Institutes of Sweden, Mölndal, Sweden
| | - Siegbert Witkowski
- Department of Prosthetic Dentistry, Center for Dental Medicine, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Pascal Tomakidi
- Department of Oral Biotechnology, Center for Dental Medicine, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Thorsten Steinberg
- Department of Oral Biotechnology, Center for Dental Medicine, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
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Cui C, Sun S, Li X, Chen S, Wu S, Zhou F, Ma J. Optimizing the chitosan-PCL based membranes with random/aligned fiber structure for controlled ciprofloxacin delivery and wound healing. Int J Biol Macromol 2022; 205:500-510. [PMID: 35218801 DOI: 10.1016/j.ijbiomac.2022.02.118] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2021] [Revised: 02/16/2022] [Accepted: 02/18/2022] [Indexed: 12/12/2022]
Abstract
The aim of this study was to optimize the chitosan/polycaprolactone (CS/PCL) electrospun nanofibrous membrane with random/aligned fiber structures to provide a controlled release of ciprofloxacin (Cip) and guide skin fibroblasts arrangement. A series of Cip-encapsulated CS/PCL electrospun membranes were prepared by coaxial-electrospinning. The existence of Cip in core-shell structured fibers was confirmed by using SEM, TEM and FTIR characterizations. The in vitro drug-release profiles suggested that the Cip presented a sustained release for 15 days. Simultaneously, cyto-compatibility of the membranes decreased with the increasing amount of Cip from 2.0% to 5.0%. In particular, aligned CS/PCL membrane loading with 2.0% Cip exhibited a good balanced ability between cell proliferation and antibacterial effect (>99% against Escherichiacoli and Staphylococcus aureus), which significantly accelerated the wound healing process in vivo. These results suggested that the aligned CS/PCL membrane loading with 2.0% Cip exhibited great antibacterial property and biocompatibility, which possess promising applications potential for wound healing.
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Affiliation(s)
- Congjing Cui
- College of Textiles and Clothing, Qingdao University, Qingdao 266071, Shandong, China
| | - Shibin Sun
- College of Textiles and Clothing, Qingdao University, Qingdao 266071, Shandong, China
| | - Xueyan Li
- College of Textiles and Clothing, Qingdao University, Qingdao 266071, Shandong, China
| | - Shaojuan Chen
- College of Textiles and Clothing, Qingdao University, Qingdao 266071, Shandong, China
| | - Shaohua Wu
- College of Textiles and Clothing, Qingdao University, Qingdao 266071, Shandong, China
| | - Fang Zhou
- College of Textiles and Clothing, Qingdao University, Qingdao 266071, Shandong, China.
| | - Jianwei Ma
- College of Textiles and Clothing, Qingdao University, Qingdao 266071, Shandong, China
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Koppe C, Hoene A, Walschus U, Finke B, Testrich H, Pohl C, Brandt N, Patrzyk M, Meichsner J, Nebe B, Schlosser M. Local Inflammatory Response after Intramuscularly Implantation of Anti-Adhesive Plasma-Fluorocarbon-Polymer Coated Ti6AI4V Discs in Rats. Polymers (Basel) 2021; 13:polym13162684. [PMID: 34451224 PMCID: PMC8399026 DOI: 10.3390/polym13162684] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 07/23/2021] [Accepted: 07/29/2021] [Indexed: 12/23/2022] Open
Abstract
Orthopaedic implants and temporary osteosynthesis devices are commonly based on Titanium (Ti). For short-term devices, cell-material contact should be restricted for easy removal after bone healing. This could be achieved with anti-adhesive plasma-fluorocarbon-polymer (PFP) films created by low-temperature plasma processes. Two different PFP thin film deposition techniques, microwave (MW) and radiofrequency (RF) discharge plasma, were applied to receive smooth, hydrophobic surfaces with octafluoropropane (C3F8) or hexafluorohexane (C6F6) as precursors. This study aimed at examining the immunological local tissue reactions after simultaneous intramuscular implantation of four different Ti samples, designated as MW-C3F8, MW-C6F6, RF-C3F8 and Ti-controls, in rats. A differentiated morphometric evaluation of the inflammatory reaction was conducted by immunohistochemical staining of CD68+ macrophages, CD163+ macrophages, MHC class II-positive cells, T lymphocytes, CD25+ regulatory T lymphocytes, NK cells and nestin-positive cells in cryosections of surrounding peri-implant tissue. Tissue samples were obtained on days 7, 14 and 56 for investigating the acute and chronical inflammation (n = 8 rats/group). Implants with a radiofrequency discharge plasma (RF-C3F8) coating exhibited a favorable short- and long-term immune/inflammatory response comparable to Ti-controls. This was also demonstrated by the significant decrease in pro-inflammatory CD68+ macrophages, possibly downregulated by significantly increasing regulatory T lymphocytes.
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Affiliation(s)
- Charlotte Koppe
- Department of General Surgery, Visceral, Thoracic and Vascular Surgery, University Medical Center Greifswald, 17487 Greifswald, Germany; (C.K.); (A.H.); (U.W.); (C.P.); (N.B.); (M.P.)
| | - Andreas Hoene
- Department of General Surgery, Visceral, Thoracic and Vascular Surgery, University Medical Center Greifswald, 17487 Greifswald, Germany; (C.K.); (A.H.); (U.W.); (C.P.); (N.B.); (M.P.)
| | - Uwe Walschus
- Department of General Surgery, Visceral, Thoracic and Vascular Surgery, University Medical Center Greifswald, 17487 Greifswald, Germany; (C.K.); (A.H.); (U.W.); (C.P.); (N.B.); (M.P.)
| | - Birgit Finke
- Leibniz Institute for Plasma Science and Technology (INP), 17487 Greifswald, Germany; (B.F.); (H.T.)
| | - Holger Testrich
- Leibniz Institute for Plasma Science and Technology (INP), 17487 Greifswald, Germany; (B.F.); (H.T.)
| | - Christopher Pohl
- Department of General Surgery, Visceral, Thoracic and Vascular Surgery, University Medical Center Greifswald, 17487 Greifswald, Germany; (C.K.); (A.H.); (U.W.); (C.P.); (N.B.); (M.P.)
| | - Nico Brandt
- Department of General Surgery, Visceral, Thoracic and Vascular Surgery, University Medical Center Greifswald, 17487 Greifswald, Germany; (C.K.); (A.H.); (U.W.); (C.P.); (N.B.); (M.P.)
| | - Maciej Patrzyk
- Department of General Surgery, Visceral, Thoracic and Vascular Surgery, University Medical Center Greifswald, 17487 Greifswald, Germany; (C.K.); (A.H.); (U.W.); (C.P.); (N.B.); (M.P.)
| | - Jürgen Meichsner
- Institute of Physics, University of Greifswald, 17487 Greifswald, Germany;
| | - Barbara Nebe
- Department of Cell Biology, University Medical Center Rostock, 18057 Rostock, Germany;
| | - Michael Schlosser
- Department of General Surgery, Visceral, Thoracic and Vascular Surgery, University Medical Center Greifswald, 17487 Greifswald, Germany; (C.K.); (A.H.); (U.W.); (C.P.); (N.B.); (M.P.)
- Correspondence: ; Tel.: +49-3834-8680422
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Padilha Fontoura C, Ló Bertele P, Machado Rodrigues M, Elisa Dotta Maddalozzo A, Frassini R, Silvestrin Celi Garcia C, Tomaz Martins S, Crespo JDS, Figueroa CA, Roesch-Ely M, Aguzzoli C. Comparative Study of Physicochemical Properties and Biocompatibility (L929 and MG63 Cells) of TiN Coatings Obtained by Plasma Nitriding and Thin Film Deposition. ACS Biomater Sci Eng 2021; 7:3683-3695. [PMID: 34291900 DOI: 10.1021/acsbiomaterials.1c00393] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Ti6Al4V is one of the most lightweight, mechanically resistant, and appropriate for biologically induced corrosion alloys. However, surface properties often must be tuned for fitting into biomedical applications, and therefore, surface modification is of paramount importance to carry on its use. This work compares the interaction between two different cell lines (L929 fibroblasts and osteoblast-like MG63) and medical grade Ti6Al4V after surface modification by plasma nitriding or thin film deposition. We studied the adhesion of these two cell lines, exploring which trends are consistent for cell behavior, correlating with osseointegration and in vivo conditions. Modified surfaces were analyzed through several physicochemical characterization techniques. Plasma nitriding led to a more pronounced increase in surface roughness, a thicker aluminum-free layer, made up of diverse titanium nitride phases, whereas thin film deposition resulted in a single-phase pure titanium nitride layer that leveled the ridged topography. The selective adhesion of osteoblast-like cells over fibroblasts was observed in nitrided samples but not in thin film deposited films, indicating that the competitive cellular behavior is more pronounced in plasma nitrided surfaces. The obtained coatings presented an appropriate performance for its use in biomedical-aimed applications, including the possibility of a higher success rate in osseointegration of implants.
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Affiliation(s)
- Cristian Padilha Fontoura
- Graduate Program in Materials Science and Engineering (PPGMAT), University of Caxias do Sul (UCS), Francisco Getúlio Vargas 1130, Caxias do Sul, Rio Grande do Sul 95070-560 Brazil
| | - Patrícia Ló Bertele
- Graduate Program in Materials Science and Engineering (PPGMAT), University of Caxias do Sul (UCS), Francisco Getúlio Vargas 1130, Caxias do Sul, Rio Grande do Sul 95070-560 Brazil
| | - Melissa Machado Rodrigues
- Graduate Program in Materials Science and Engineering (PPGMAT), University of Caxias do Sul (UCS), Francisco Getúlio Vargas 1130, Caxias do Sul, Rio Grande do Sul 95070-560 Brazil
| | - Ana Elisa Dotta Maddalozzo
- Graduate Program in Materials Science and Engineering (PPGMAT), University of Caxias do Sul (UCS), Francisco Getúlio Vargas 1130, Caxias do Sul, Rio Grande do Sul 95070-560 Brazil
- Institute of Biotechnology, University of Caxias do Sul (UCS), Francisco Getúlio Vargas 1130, Caxias do Sul, Rio Grande do Sul 95070-560, Brazil
| | - Rafaele Frassini
- Institute of Biotechnology, University of Caxias do Sul (UCS), Francisco Getúlio Vargas 1130, Caxias do Sul, Rio Grande do Sul 95070-560, Brazil
| | - Charlene Silvestrin Celi Garcia
- Institute of Biotechnology, University of Caxias do Sul (UCS), Francisco Getúlio Vargas 1130, Caxias do Sul, Rio Grande do Sul 95070-560, Brazil
| | - Sandro Tomaz Martins
- Institute of Biotechnology, University of Caxias do Sul (UCS), Francisco Getúlio Vargas 1130, Caxias do Sul, Rio Grande do Sul 95070-560, Brazil
| | - Janaina da Silva Crespo
- Graduate Program in Materials Science and Engineering (PPGMAT), University of Caxias do Sul (UCS), Francisco Getúlio Vargas 1130, Caxias do Sul, Rio Grande do Sul 95070-560 Brazil
- Institute of Biotechnology, University of Caxias do Sul (UCS), Francisco Getúlio Vargas 1130, Caxias do Sul, Rio Grande do Sul 95070-560, Brazil
| | - Carlos A Figueroa
- Graduate Program in Materials Science and Engineering (PPGMAT), University of Caxias do Sul (UCS), Francisco Getúlio Vargas 1130, Caxias do Sul, Rio Grande do Sul 95070-560 Brazil
| | - Mariana Roesch-Ely
- Institute of Biotechnology, University of Caxias do Sul (UCS), Francisco Getúlio Vargas 1130, Caxias do Sul, Rio Grande do Sul 95070-560, Brazil
| | - Cesar Aguzzoli
- Graduate Program in Materials Science and Engineering (PPGMAT), University of Caxias do Sul (UCS), Francisco Getúlio Vargas 1130, Caxias do Sul, Rio Grande do Sul 95070-560 Brazil
- Institute of Biotechnology, University of Caxias do Sul (UCS), Francisco Getúlio Vargas 1130, Caxias do Sul, Rio Grande do Sul 95070-560, Brazil
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5
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Akiyama Y, Iwasa F, Hotta Y, Matsumoto T, Oshima Y, Baba K. Effects of surface roughness of ceria-stabilized zirconia/alumina nanocomposite on the morphology and function of human gingival fibroblasts. Dent Mater J 2020; 40:472-480. [PMID: 33268692 DOI: 10.4012/dmj.2019-435] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
We evaluated the biological effects of implant abutments made from ceria-stabilized zirconia/alumina nanocomposite (Ce-TZP/Al2O3) with surface roughness variations using human gingival fibroblasts (HGF-1) in the transmucosal region. Two types of titanium (Ti) and Ce-TZP/Al2O3 disks with different surface roughness profiles were prepared (Ra0.9 and Ra0.02). Surface properties were evaluated using SEM, EDX, and wettability analysis. Biological parameters including cell adhesion, proliferation and morphology, collagen deposition, and inflammatory cytokine expression were evaluated for each disk. Surface morphology analysis of Ce-TZP/Al2O3 and Ti elucidated the uniform linear structures of Ra0.9 and the smooth and flat structures of Ra0.02. Cell morphology showed spindle-shaped and large, circular forms, respectively. Cell adhesion and proliferation and collagen deposition were significantly increased on Ce-TZP/Al2O3 Ra0.02 disk compared with the others, with no significant differences in cytokine expression among all the disks. The reduced surface roughness of Ce-TZP/Al2O3 was advantageous for promoting biological effects in the transmucosal region.
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Affiliation(s)
- Yuri Akiyama
- Department of Prosthodontics, School of Dentistry, Showa University
| | - Fuminori Iwasa
- Department of Prosthodontics, School of Dentistry, Showa University
| | - Yasuhiro Hotta
- Department of Conservative Dentistry, Division of Biomaterials and Engineering, School of Dentistry, Showa University
| | | | - Yoko Oshima
- Department of Prosthodontics, School of Dentistry, Showa University
| | - Kazuyoshi Baba
- Department of Prosthodontics, School of Dentistry, Showa University
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Dart A, Bhave M, Kingshott P. Antimicrobial Peptide‐Based Electrospun Fibers for Wound Healing Applications. Macromol Biosci 2019; 19:e1800488. [DOI: 10.1002/mabi.201800488] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2018] [Revised: 04/26/2019] [Indexed: 12/17/2022]
Affiliation(s)
- Alexander Dart
- Department of Chemistry and BiotechnologySchool of ScienceFaculty of Science, Engineering and TechnologySwinburne University of Technology Hawthorn 3122 VIC Australia
| | - Mrinal Bhave
- Department of Chemistry and BiotechnologySchool of ScienceFaculty of Science, Engineering and TechnologySwinburne University of Technology Hawthorn 3122 VIC Australia
| | - Peter Kingshott
- Department of Chemistry and BiotechnologySchool of ScienceFaculty of Science, Engineering and TechnologySwinburne University of Technology Hawthorn 3122 VIC Australia
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7
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Rochford ETJ, Sabaté Brescó M, Poulsson AHC, Kluge K, Zeiter S, Ziegler M, O'Mahony L, Richards RG, Moriarty TF. Infection burden and immunological responses are equivalent for polymeric and metallic implant materials in vitro and in a murine model of fracture-related infection. J Biomed Mater Res B Appl Biomater 2018; 107:1095-1106. [PMID: 30332531 DOI: 10.1002/jbm.b.34202] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Revised: 01/30/2018] [Accepted: 02/18/2018] [Indexed: 12/31/2022]
Abstract
The development of an infection is a major complication for some patients with implanted biomaterials. Whether the material or surface composition of the used biomaterial influences infection has not been directly compared for key biomaterials currently in use in human patients. We conducted a thorough in vitro and in vivo investigation using titanium (Ti) and polyether-ether-ketone (PEEK) as both commercially available and as modified equivalents (surface polished Ti, and oxygen plasma treated PEEK). Complement activation and cytokine secretion of cell of the immune system was assessed in vitro for all materials in the absence and presence of bacterial stimulants. In a follow-up in vivo study, we monitored bacterial infection associated with clinically available and standard Ti and PEEK inoculated with Staphylococcus aureus. Complement activation was affected by material choice in the absence of bacterial stimulation, although the material based differences were largely lost upon bacterial stimulation. In the in vivo study, the bacterial burden, histological response and cytokine secretion suggests that there is no significant difference between both PEEK and Ti. In conclusion, the underlying material has a certain impact in the absence of bacterial stimulation, however, in the presence of bacterial stimulation, bacteria seem to dictate the responses in a manner that overshadows the influence of material surface properties. © 2018 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater 107B: 1095-1106, 2019.
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Affiliation(s)
| | | | | | | | | | - Mario Ziegler
- Swiss Institute of Allergy and Asthma Research (SIAF), University of Zurich, Davos, Switzerland
| | - Liam O'Mahony
- Departments of Medicine and Microbiology, APC Microbiome Ireland, National University of Ireland, Cork, Ireland
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Gonzalez-Fernandez F, Fornalik M, Garlipp MA, Gonzalez-Fernandez P, Sung D, Meyer A, Baier R. Pericellular interphotoreceptor matrix dictates outer retina critical surface tension. Exp Eye Res 2017; 167:163-173. [PMID: 29051013 DOI: 10.1016/j.exer.2017.10.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Revised: 07/30/2017] [Accepted: 10/12/2017] [Indexed: 11/15/2022]
Abstract
Retinal detachments create two pathological surfaces, the surface of the outer neural retinal, and an apical retinal-pigmented epithelium (RPE) surface. The physicochemical properties of these two new surfaces are poorly understood. At a molecular level little is known how detachments form, how to optimize reattachment, or prevent extension of the detachment. A major limitation is lack of information about the biophysical consequences of the retina-RPE separation. The primary challenge is determining the molecular properties of the pathological interface surfaces. Here, using detached bovine retina, we show that this hurdle can be overcome through a combination of biophysical and ultrastructural approaches. The outer surface of freshly detached bovine neural retina, and isolated molecular components of the outer retina were subjected to: 1) Contact angle goniometry to determine the critical surface tension of the outer retinal surface, isolated insoluble interphotoreceptor matrix (IPM) and purified interphotoreceptor retinoid binding protein (IRBP); 2) Multiple attenuated internal reflectance infrared (MAIR-IR) spectroscopy was used to characterize the molecular composition of the retinal surface. MAIR-IR depth penetration was established through ellipsometric measurement of barium-stearate films. Light microscopy, immunohistochemistry and electron microscopy defined the structures probed spectroscopically. Furthermore, the data were correlated to IR spectra of docosahexaenoic acid, hyaluronan, chondroitin-6-sulfate and IRBP, and imaging by IR-microscopy. We found that the retinal critical surface tension is 24 mN/m, similar to isolated insoluble IPM and lower than IRBP. Barium-stearate calibration studies established that the MAIR-IR spectroscopy penetration depth was 0.2 μm. Ultrastructural observations and MAIR-IR studies of isolated outer retina components determined that the pericellular IPM coating the outer retinal surface is primarily responsible for these surface properties. The critical surface tension of detached bovine retina is dictated not by the outer segments, but by a pericellular IPM covering the outer segment tips.
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Affiliation(s)
- Federico Gonzalez-Fernandez
- Medical Research Service, G.V. (Sonny) Montgomery Veterans Affairs Medical Center, Jackson, MS, United States; Ophthalmology and Pathology, University of Mississippi Medical Center, Jackson, MS, United States; Ophthalmology, Ross Eye Institute, SUNY, Buffalo, NY, United States; Pathology & Anatomic Sciences, SUNY, Buffalo, NY, United States.
| | - Mark Fornalik
- Center for Biosurfaces, SUNY, Buffalo, NY, United States
| | | | - Priscilla Gonzalez-Fernandez
- Medical Research Service, G.V. (Sonny) Montgomery Veterans Affairs Medical Center, Jackson, MS, United States; Ophthalmology, Ross Eye Institute, SUNY, Buffalo, NY, United States
| | - Dongjin Sung
- Ophthalmology, Ross Eye Institute, SUNY, Buffalo, NY, United States
| | - Anne Meyer
- Ophthalmology, Ross Eye Institute, SUNY, Buffalo, NY, United States; Center for Biosurfaces, SUNY, Buffalo, NY, United States
| | - Robert Baier
- Ophthalmology, Ross Eye Institute, SUNY, Buffalo, NY, United States; Center for Biosurfaces, SUNY, Buffalo, NY, United States
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Qu C, Kaitainen S, Kröger H, Lappalainen R, Lammi MJ. Behavior of Human Bone Marrow-Derived Mesenchymal Stem Cells on Various Titanium-Based Coatings. MATERIALS 2016; 9:ma9100827. [PMID: 28773947 PMCID: PMC5456604 DOI: 10.3390/ma9100827] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/08/2016] [Revised: 09/26/2016] [Accepted: 10/06/2016] [Indexed: 12/15/2022]
Abstract
The chemical composition and texture of titanium coatings can influence the growth characteristics of the adhered cells. An enhanced proliferation of the human mesenchymal stem cells (hMSCs) would be beneficial. The present study was aimed to investigate whether titanium deposited at different atmospheres would affect the cell growth properties, cellular morphology, and expression of surface markers of hMSCs. Titanium-based coatings were deposited on silicon wafers under oxygen, nitrogen, or argon atmospheres by ultra-short pulsed laser deposition using two different gas pressures followed by heating at 400 °C for 2 h. The characteristics of the coated surfaces were determined via contact angle, zeta potential, and scanning electron microscopy (SEM) techniques. Human MSCs were cultivated on differently coated silicon wafers for 48 h. Subsequently, the cell proliferation rates were analyzed with an MTT assay. The phenotype of hMSCs was checked via immunocytochemical stainings of MSC-associated markers CD73, CD90, and CD105, and the adhesion, spreading, and morphology of hMSCs on coated materials via SEM. The cell proliferation rates of the hMSCs were similar on all coated silicon wafers. The hMSCs retained the MSC phenotype by expressing MSC-associated markers and fibroblast-like morphology with cellular projections. Furthermore, no significant differences could be found in the size of the cells when cultured on all various coated surfaces. In conclusion, despite certain differences in the contact angles and the zeta potentials of various titanium-based coatings, no single coating markedly improved the growth characteristics of hMSCs.
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Affiliation(s)
- Chengjuan Qu
- Department of Orthopaedics, Traumatology and Hand Surgery, Kuopio University Hospital, Kuopio 70210, Finland.
- Department of Integrative Medical Biology, Umeå University, Umeå 90187, Sweden.
| | - Salla Kaitainen
- Department of Applied Physics, University of Eastern Finland, Kuopio 70211, Finland.
| | - Heikki Kröger
- Department of Orthopaedics, Traumatology and Hand Surgery, Kuopio University Hospital, Kuopio 70210, Finland.
| | - Reijo Lappalainen
- Department of Applied Physics, University of Eastern Finland, Kuopio 70211, Finland.
| | - Mikko J Lammi
- Department of Integrative Medical Biology, Umeå University, Umeå 90187, Sweden.
- Key Laboratory of Trace Elements and Endemic Diseases, National Health and Family Planning Commission, School of Public Health of Health Science Center, Xi'an Jiaotong University, Xi'an 710061, China.
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10
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Armentano I, Fortunati E, Gigli M, Luzi F, Trotta R, Bicchi I, Soccio M, Lotti N, Munari A, Martino S, Torre L, Kenny JM. Effect of SWCNT introduction in random copolymers on material properties and fibroblast long term culture stability. Polym Degrad Stab 2016. [DOI: 10.1016/j.polymdegradstab.2016.02.019] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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11
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Follmann HD, Naves AF, Martins AF, Félix O, Decher G, Muniz EC, Silva R. Advanced fibroblast proliferation inhibition for biocompatible coating by electrostatic layer-by-layer assemblies of heparin and chitosan derivatives. J Colloid Interface Sci 2016; 474:9-17. [DOI: 10.1016/j.jcis.2016.04.008] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2016] [Revised: 04/07/2016] [Accepted: 04/08/2016] [Indexed: 12/20/2022]
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12
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Akhavan B, Menges B, Förch R. Inhomogeneous Growth of Micrometer Thick Plasma Polymerized Films. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:4792-4799. [PMID: 27111265 DOI: 10.1021/acs.langmuir.6b01050] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Plasma polymerization is traditionally recognized as a homogeneous film-forming technique. It is nevertheless reasonable to ask whether micrometer thick plasma polymerized structures are really homogeneous across the film thickness. Studying the properties of the interfacial, near-the-substrate (NTS) region in plasma polymer films represents particular experimental challenges due to the inaccessibility of the buried layers. In this investigation, a novel non-destructive approach has been utilized to evaluate the homogeneity of plasma polymerized acrylic acid (PPAc) and 1,7-octadiene (PPOD) films in a single measurement. Studying the variations of refractive index throughout the depth of the films was facilitated by a home-built surface plasmon resonance (SPR)/optical waveguide (OWG) spectroscopy setup. It has been shown that the NTS layer of both PPAc and PPOD films exhibits a significantly lower refractive index than the bulk of the film that is believed to indicate a higher concentration of internal voids. Our results provide new insights into the growth mechanisms of plasma polymer films and challenge the traditional view that considers plasma polymers as homogeneous and continuous structures.
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Affiliation(s)
- Behnam Akhavan
- School of Physics, A28, University of Sydney , Sydney, NSW 2006, Australia
- School of Engineering, University of South Australia , Mawson Lakes, SA 5095, Australia
| | - Bernhard Menges
- Max Planck Institute for Polymer Research, Ackermannweg 10, Mainz 55128, Germany
| | - Renate Förch
- Fraunhofer ICT-IMM, Carl-Zeiss-Str. 18-20, Mainz 55129, Germany
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Baranowski A, Klein A, Ritz U, Ackermann A, Anthonissen J, Kaufmann KB, Brendel C, Götz H, Rommens PM, Hofmann A. Surface Functionalization of Orthopedic Titanium Implants with Bone Sialoprotein. PLoS One 2016; 11:e0153978. [PMID: 27111551 PMCID: PMC4844107 DOI: 10.1371/journal.pone.0153978] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2016] [Accepted: 04/06/2016] [Indexed: 12/22/2022] Open
Abstract
Orthopedic implant failure due to aseptic loosening and mechanical instability remains a major problem in total joint replacement. Improving osseointegration at the bone-implant interface may reduce micromotion and loosening. Bone sialoprotein (BSP) has been shown to enhance bone formation when coated onto titanium femoral implants and in rat calvarial defect models. However, the most appropriate method of BSP coating, the necessary level of BSP coating, and the effect of BSP coating on cell behavior remain largely unknown. In this study, BSP was covalently coupled to titanium surfaces via an aminosilane linker (APTES), and its properties were compared to BSP applied to titanium via physisorption and untreated titanium. Cell functions were examined using primary human osteoblasts (hOBs) and L929 mouse fibroblasts. Gene expression of specific bone turnover markers at the RNA level was detected at different intervals. Cell adhesion to titanium surfaces treated with BSP via physisorption was not significantly different from that of untreated titanium at any time point, whereas BSP application via covalent coupling caused reduced cell adhesion during the first few hours in culture. Cell migration was increased on titanium disks that were treated with higher concentrations of BSP solution, independent of the coating method. During the early phases of hOB proliferation, a suppressive effect of BSP was observed independent of its concentration, particularly when BSP was applied to the titanium surface via physisorption. Although alkaline phosphatase activity was reduced in the BSP-coated titanium groups after 4 days in culture, increased calcium deposition was observed after 21 days. In particular, the gene expression level of RUNX2 was upregulated by BSP. The increase in calcium deposition and the stimulation of cell differentiation induced by BSP highlight its potential as a surface modifier that could enhance the osseointegration of orthopedic implants. Both physisorption and covalent coupling of BSP are similarly effective, feasible methods, although a higher BSP concentration is recommended.
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Affiliation(s)
- Andreas Baranowski
- Department of Orthopedics and Traumatology, University Medical Centre, Johannes Gutenberg University, Mainz, Germany
| | - Anja Klein
- Department of Orthopedics and Traumatology, University Medical Centre, Johannes Gutenberg University, Mainz, Germany
| | - Ulrike Ritz
- Department of Orthopedics and Traumatology, University Medical Centre, Johannes Gutenberg University, Mainz, Germany
| | - Angelika Ackermann
- Department of Orthopedics and Traumatology, University Medical Centre, Johannes Gutenberg University, Mainz, Germany
| | - Joris Anthonissen
- Department of Orthopedics and Traumatology, University Medical Centre, Johannes Gutenberg University, Mainz, Germany
| | - Kerstin B. Kaufmann
- Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada
| | - Christian Brendel
- Division of Pediatric Hematology/Oncology, Boston Children’s Hospital, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Hermann Götz
- Platform for Biomaterial Research, University Medical Centre, Johannes Gutenberg University, Mainz, Germany
| | - Pol M. Rommens
- Department of Orthopedics and Traumatology, University Medical Centre, Johannes Gutenberg University, Mainz, Germany
| | - Alexander Hofmann
- Department of Orthopedics and Traumatology, University Medical Centre, Johannes Gutenberg University, Mainz, Germany
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Antibacterial titanium nano-patterned arrays inspired by dragonfly wings. Sci Rep 2015; 5:16817. [PMID: 26576662 PMCID: PMC4649496 DOI: 10.1038/srep16817] [Citation(s) in RCA: 162] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2015] [Accepted: 10/16/2015] [Indexed: 12/28/2022] Open
Abstract
Titanium and its alloys remain the most popular choice as a medical implant material because of its desirable properties. The successful osseointegration of titanium implants is, however, adversely affected by the presence of bacterial biofilms that can form on the surface, and hence methods for preventing the formation of surface biofilms have been the subject of intensive research over the past few years. In this study, we report the response of bacteria and primary human fibroblasts to the antibacterial nanoarrays fabricated on titanium surfaces using a simple hydrothermal etching process. These fabricated titanium surfaces were shown to possess selective bactericidal activity, eliminating almost 50% of Pseudomonas aeruginosa cells and about 20% of the Staphylococcus aureus cells coming into contact with the surface. These nano-patterned surfaces were also shown to enhance the aligned attachment behavior and proliferation of primary human fibroblasts over 10 days of growth. These antibacterial surfaces, which are capable of exhibiting differential responses to bacterial and eukaryotic cells, represent surfaces that have excellent prospects for biomedical applications.
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Benko A, Frączek-Szczypta A, Menaszek E, Wyrwa J, Nocuń M, Błażewicz M. On the influence of various physicochemical properties of the CNTs based implantable devices on the fibroblasts' reaction in vitro. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2015; 26:262. [PMID: 26464119 PMCID: PMC4604508 DOI: 10.1007/s10856-015-5597-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2015] [Accepted: 10/01/2015] [Indexed: 06/04/2023]
Abstract
Coating the material with a layer of carbon nanotubes (CNTs) has been a subject of particular interest for the development of new biomaterials. Such coatings, made of properly selected CNTs, may constitute an implantable electronic device that facilitates tissue regeneration both by specific surface properties and an ability to electrically stimulate the cells. The goal of the presented study was to produce, evaluate physicochemical properties and test the applicability of highly conductible material designed as an implantable electronic device. Two types of CNTs with varying level of oxidation were chosen. The process of coating involved suspension of the material of choice in the diluent followed by the electrophoretic deposition to fabricate layers on the surface of a highly biocompatible metal-titanium. Presented study includes an assessment of the physicochemical properties of the material's surface along with an electrochemical evaluation and in vitro biocompatibility, cytotoxicity and apoptosis studies in contact with the murine fibroblasts (L929) in attempt to answer the question how the chemical composition and CNTs distribution in the layer alters the electrical properties of the sample and whether any of these properties have influenced the overall biocompatibility and stimulated adhesion of fibroblasts. The results indicate that higher level of oxidation of CNTs yielded materials more conductive than the metal they are deposited on. In vitro study revealed that both materials were biocompatible and that the cells were not affected by the amount of the functional group and the morphology of the surface they adhered to.
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Affiliation(s)
- Aleksandra Benko
- AGH University of Science and Technology, Faculty of Materials Science and Ceramics, 30 Mickiewicza Ave., Kraków, 30-059, Poland.
| | - Aneta Frączek-Szczypta
- AGH University of Science and Technology, Faculty of Materials Science and Ceramics, 30 Mickiewicza Ave., Kraków, 30-059, Poland
| | - Elżbieta Menaszek
- Department of Cytobiology, Collegium Medicum, Jagiellonian University, 9 Medyczna St., 30-068, Kraków, Poland
| | - Jan Wyrwa
- AGH University of Science and Technology, Faculty of Materials Science and Ceramics, 30 Mickiewicza Ave., Kraków, 30-059, Poland
| | - Marek Nocuń
- AGH University of Science and Technology, Faculty of Materials Science and Ceramics, 30 Mickiewicza Ave., Kraków, 30-059, Poland
| | - Marta Błażewicz
- AGH University of Science and Technology, Faculty of Materials Science and Ceramics, 30 Mickiewicza Ave., Kraków, 30-059, Poland
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