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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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Chytrosz-Wrobel P, Golda-Cepa M, Drozdz K, Rysz J, Kubisiak P, Kulig W, Brzychczy-Wloch M, Cwiklik L, Kotarba A. In Vitro and In Silico Studies of Functionalized Polyurethane Surfaces toward Understanding Biologically Relevant Interactions. ACS Biomater Sci Eng 2023; 9:6112-6122. [PMID: 37909715 PMCID: PMC10646850 DOI: 10.1021/acsbiomaterials.3c01367] [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: 09/20/2023] [Accepted: 10/18/2023] [Indexed: 11/03/2023]
Abstract
The solid-aqueous boundary formed upon biomaterial implantation provides a playground for most biochemical reactions and physiological processes involved in implant-host interactions. Therefore, for biomaterial development, optimization, and application, it is essential to understand the biomaterial-water interface in depth. In this study, oxygen plasma-functionalized polyurethane surfaces that can be successfully utilized in contact with the tissue of the respiratory system were prepared and investigated. Through experiments, the influence of plasma treatment on the physicochemical properties of polyurethane was investigated by atomic force microscopy, attenuated total reflection infrared spectroscopy, differential thermal analysis, X-ray photoelectron spectroscopy, secondary ion mass spectrometry, and contact angle measurements, supplemented with biological tests using the A549 cell line and two bacteria strains (Staphylococcus aureus and Pseudomonas aeruginosa). The molecular interpretation of the experimental findings was achieved by molecular dynamics simulations employing newly developed, fully atomistic models of unmodified and plasma-functionalized polyurethane materials to characterize the polyurethane-water interfaces at the nanoscale in detail. The experimentally obtained polar and dispersive surface free energies were consistent with the calculated free energies, verifying the adequacy of the developed models. A 20% substitution of the polymeric chain termini by their oxidized variants was observed in the experimentally obtained plasma-modified polyurethane surface, indicating the surface saturation with oxygen-containing functional groups.
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Affiliation(s)
- Paulina Chytrosz-Wrobel
- Faculty
of Chemistry, Jagiellonian University in
Krakow, Gronostajowa 2, 30-387 Krakow, Poland
| | - Monika Golda-Cepa
- Faculty
of Chemistry, Jagiellonian University in
Krakow, Gronostajowa 2, 30-387 Krakow, Poland
| | - Kamil Drozdz
- Department
of Molecular Medical Microbiology, Chair of Microbiology, Faculty
of Medicine, Jagiellonian University Medical
College, Czysta 18, 31-121 Krakow, Poland
| | - Jakub Rysz
- Faculty
of Physics Astronomy and Applied Computer Science, Jagiellonian University, Lojasiewicza 11, 30-348 Krakow, Poland
| | - Piotr Kubisiak
- Faculty
of Chemistry, Jagiellonian University in
Krakow, Gronostajowa 2, 30-387 Krakow, Poland
| | - Waldemar Kulig
- Department
of Physics, University of Helsinki, P.O. Box 64, FI-00014 Helsinki, Finland
| | - Monika Brzychczy-Wloch
- Department
of Molecular Medical Microbiology, Chair of Microbiology, Faculty
of Medicine, Jagiellonian University Medical
College, Czysta 18, 31-121 Krakow, Poland
| | - Lukasz Cwiklik
- J.
Heyrovský Institute of Physical Chemistry, Czech Academy of Sciences, Dolejškova 3, 18223 Prague, Czech Republic
| | - Andrzej Kotarba
- Faculty
of Chemistry, Jagiellonian University in
Krakow, Gronostajowa 2, 30-387 Krakow, Poland
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Morozov IA, Kamenetskikh AS, Beliaev AY, Scherban MG, Lemkina LM, Eroshenko DV. The Effects of Plasma Subplantation of Nitrogen Ions on the Structure and Mechanical Properties and Biomedical Surface Properties of Elastic Polyurethane. Biophysics (Nagoya-shi) 2021. [DOI: 10.1134/s0006350921060117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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4
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Surface Modified β-Tricalcium phosphate enhanced stem cell osteogenic differentiation in vitro and bone regeneration in vivo. Sci Rep 2021; 11:9234. [PMID: 33927241 PMCID: PMC8084957 DOI: 10.1038/s41598-021-88402-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Accepted: 04/12/2021] [Indexed: 02/08/2023] Open
Abstract
A major number of studies have demonstrated Beta-tricalcium phosphate (β-TCP) biocompatibility, bioactivity, and osteoconductivity characteristics in bone regeneration. The aim of this research was to enhance β-TCP's biocompatibility, and evaluate its physicochemical properties by argon glow discharge plasma (GDP) plasma surface treatment without modifying its surface. Treated β-TCP was analyzed by scanning electron microscopy (SEM), energy-dispersive spectrometry, X-ray photoelectron spectroscopy (XPS), X-ray diffraction analysis, and Fourier transform infrared spectroscopy characterization. To evaluate treated β-TCP biocompatibility and osteoblastic differentiation, water-soluble tetrazolium salts-1 (WST-1), immunofluorescence, alkaline phosphatase (ALP) assay, and quantitative real-time polymerase chain reaction (QPCR) were done using human mesenchymal stem cells (hMSCs). The results indicated a slight enhancement of the β-TCP by GDP sputtering, which resulted in a higher Ca/P ratio (2.05) than the control. Furthermore, when compared with control β-TCP, we observed an improvement of WST-1 on all days (p < 0.05) as well as of ALP activity (day 7, p < 0.05), with up-regulation of ALP, osteocalcin, and Osteoprotegerin osteogenic genes in cells cultured with the treated β-TCP. XPS and SEM results indicated that treated β-TCP’s surface was not modified. In vivo, micro-computed tomography and histomorphometric analysis indicated that the β-TCP test managed to regenerate more new bone than the untreated β-TCP and control defects at 8 weeks (p < 0.05). Argon GDP treatment is a viable method for removing macro and micro particles of < 7 μm in size from β-TCP bigger particles surfaces and therefore improving its biocompatibility with slight surface roughness modification, enhancing hMSCs proliferation, osteoblastic differentiation, and stimulating more new bone formation.
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Morozov IA, Kamenetskikh AS, Beliaev AY, Scherban MG, Lemkina LM, Eroshenko DV, Kiselkov DM. Structural‐mechanical and biomedical surface properties of elastic polyurethane after
PECVD
of Ar/
C
2
H
2
. J Appl Polym Sci 2021. [DOI: 10.1002/app.49725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Ilya A. Morozov
- Institute of Continuous Media Mechanics UB RAS Perm Russia
- Department of Physical Chemistry Perm State University Perm Russia
| | | | | | | | - Larisa M. Lemkina
- Institute of Ecology and Genetics of Microorganisms UB RAS Perm Russia
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6
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Matos AO, de Almeida AB, Beline T, Tonon CC, Casarin RCV, Windsor LJ, Duarte S, Nociti FH, Rangel EC, Gregory RL, Barão VAR. Synthesis of multifunctional chlorhexidine-doped thin films for titanium-based implant materials. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 117:111289. [PMID: 32919650 DOI: 10.1016/j.msec.2020.111289] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Revised: 07/01/2020] [Accepted: 07/22/2020] [Indexed: 12/28/2022]
Abstract
Our goal was to create bio-functional chlorhexidine (CHX)-doped thin films on commercially pure titanium (cpTi) discs using the glow discharge plasma approach. Different plasma deposition times (50, 35 and 20 min) were used to create bio-functional surfaces based on silicon films with CHX that were compared to the control groups [no CHX and bulk cpTi surface (machined)]. Physico-chemical and biological characterizations included: 1. Morphology, roughness, elemental chemical composition, film thickness, contact angle and surface free energy; 2. CHX-release rate; 3. Antibacterial effect on Streptococcus sanguinis biofilms at 24, 48 and 72 h; 4. Cytotoxicity and metabolic activity using fibroblasts cell culture (NIH-F3T3 cells) at 1, 2, 3 and 4 days; 5. Protein expression by NIH-F3T3 cells at 1, 2, 3 and 4 days; and 6. Co-culture assay of fibroblasts cells and S. sanguinis to assess live and dead cells on the confocal laser scanning microscopy, mitochondrial activity (XTT), membrane leakage (LDH release), and metabolic activity (WST-1 assay) at 1, 2 and 3 days of co-incubation. Data analysis showed that silicon films, with or without CHX coated cpTi discs, increased surface wettability and free energy (p < 0.05) without affecting surface roughness. CHX release was maintained over a 22-day period and resulted in a significant inhibition of biofilm growth (p < 0.05) at 48 and 72 h of biofilm formation for 50 min and 20 min of plasma deposition time groups, respectively. In general, CHX treatment did not significantly affect NIH-F3T3 cell viability (p > 0.05), whereas cell metabolism (MTT assay) was affected by CHX, with the 35 min of plasma deposition time group displaying the lowest values as compared to bulk cpTi (p < 0.05). Moreover, data analysis showed that films, with or without CHX, significantly affected the expression profile of inflammatory cytokines, including IL-4, IL-6, IL-17, IFN-y and TNF-α by NIH-F3T3 cells (p < 0.05). Co-culture demonstrated that CHX-doped film did not affect the metabolic activity, cytotoxicity and viability of fibroblasts cells (p > 0.05). Altogether, the findings of the current study support the conclusion that silicon films added with CHX can be successfully created on titanium discs and have the potential to affect bacterial growth and inflammatory markers without affecting cell viability/proliferation rates.
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Affiliation(s)
- Adaias Oliveira Matos
- Department of Prosthodontics and Periodontology, Piracicaba Dental School, University of Campinas (UNICAMP), Piracicaba, São Paulo, Brazil; Department of Biomedical Sciences and Comprehensive Care, Indiana University School of Dentistry, Indianapolis, IN, USA
| | - Amanda Bandeira de Almeida
- Department of Prosthodontics and Periodontology, Piracicaba Dental School, University of Campinas (UNICAMP), Piracicaba, São Paulo, Brazil
| | - Thamara Beline
- Department of Prosthodontics and Periodontology, Piracicaba Dental School, University of Campinas (UNICAMP), Piracicaba, São Paulo, Brazil
| | - Caroline C Tonon
- Department of Cariology, Operative Dentistry and Dental Public Health, Indiana University, Purdue University Indianapolis, School of Dentistry, Indianapolis, IN, USA
| | - Renato Corrêa Viana Casarin
- Department of Prosthodontics and Periodontology, Piracicaba Dental School, University of Campinas (UNICAMP), Piracicaba, São Paulo, Brazil
| | - Lester Jack Windsor
- Department of Biomedical Sciences and Comprehensive Care, Indiana University School of Dentistry, Indianapolis, IN, USA
| | - Simone Duarte
- Department of Cariology, Operative Dentistry and Dental Public Health, Indiana University, Purdue University Indianapolis, School of Dentistry, Indianapolis, IN, USA
| | - Francisco Humberto Nociti
- Department of Prosthodontics and Periodontology, Piracicaba Dental School, University of Campinas (UNICAMP), Piracicaba, São Paulo, Brazil
| | - Elidiane Cipriano Rangel
- Laboratory of Technological Plasmas (LaPTec), São Paulo State University (UNESP), Science and Technology Institute of Sorocaba (ICTS), Sorocaba, São Paulo, Brazil
| | - Richard L Gregory
- Department of Biomedical Sciences and Comprehensive Care, Indiana University School of Dentistry, Indianapolis, IN, USA
| | - Valentim Adelino Ricardo Barão
- Department of Prosthodontics and Periodontology, Piracicaba Dental School, University of Campinas (UNICAMP), Piracicaba, São Paulo, Brazil.
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7
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Abdelghaffar F, Abdelghaffar RA, Rashed UM, Ahmed HM. Highly effective surface modification using plasma technologies toward green coloration of polyester fabrics. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:28949-28961. [PMID: 32418110 DOI: 10.1007/s11356-020-09081-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2019] [Accepted: 04/27/2020] [Indexed: 05/04/2023]
Abstract
This study is anchored on the use of an eco-friendly effective plasma technique and cationization treatment to improve the hydrophobic nature of polyester (PET) fabric by incorporating hydrophilic functional groups onto the PET surface. The PET surface was initially treated with three different plasma gases prior to cationization treatment with quaternary ammonium salt (Quat 188). Madder roots were used, to produce natural dyes for the green coloration of PET fabrics in both dyeing and printing processes. The color strength (K/S) was measured to study the influence of both plasma gases and the cationization treatment on the coloration of PET fabric. Exposure to nitrogen plasma gases prior to the cationization treatment showed promising results for efficient PET coloration, resulting in the selection of nitrogen as a working gas at a flow rate of 3 l/min. The results also demonstrated that by combining the nitrogen plasma technique and cationization treatment, PET fabric with a highly effective surface was obtained, resulting in improved coloration, wettability, tensile strength, and roughness properties.
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Affiliation(s)
- Fatma Abdelghaffar
- Textile Research Industrial Division, National Research Centre, El-Behouth St. Dokki, Giza, PO 12622, Egypt.
| | - Rehab A Abdelghaffar
- Textile Research Industrial Division, National Research Centre, El-Behouth St. Dokki, Giza, PO 12622, Egypt
| | - Usama M Rashed
- Physics Dept., Faculty of Science, Al-Azhar University, Cairo, Egypt
- Center of Plasma Technology, Al-Azhar University, Cairo, Egypt
| | - Hend M Ahmed
- Textile Research Industrial Division, National Research Centre, El-Behouth St. Dokki, Giza, PO 12622, Egypt
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8
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Timaeva OI, Kuz’micheva GM, Chikhacheva IP, Safyanova LV, Chumakov RG, Terekhova RP. Role of the Surface Composition and Structure of Titanium(IV) Oxide in the Manifestation of Antimicrobial Properties in Poly-N-vinylamide/Titanium(IV) Oxide Hybrid Materials. CRYSTALLOGR REP+ 2019. [DOI: 10.1134/s106377451906021x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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9
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Preparation, physicochemical properties and antimicrobial activity of η-modification of titanium(IV) oxide intercalated with poly(N-vinylcaprolactam). APPLIED NANOSCIENCE 2018. [DOI: 10.1007/s13204-018-0848-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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10
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Queiroz DP, Pinto IM, Besteiro MCF, Silva AFM, Gil MH, Guiomar AJ, de Pinho MN. Surface and Hemocompatibility Studies of Bi-Soft Segment Polyurethane Membranes. Int J Artif Organs 2018; 29:866-72. [PMID: 17033994 DOI: 10.1177/039139880602900908] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Cross-linked urethane/urea membranes with two soft segments were prepared by extending a poly(propylene oxide) based tri-isocyanate-terminated prepolymer (PUR) with polybutadiene diol (PBDO). The ratio of prepolymer and polybutadiene diol was varied to yield cross-linked membranes with different compositions, exhibiting different degrees of phase-separation of the PBDO segments in the bulk and of surface enrichment in PUR. In this work, surface energy and hemocompatibility aspects (hemolysis and thrombosis) of the PUR/PBDO membranes were evaluated. The results showed that the membrane surface energy increased with the PBDO content until 25% of PBDO, and decreased thereafter. The introduction of the second, more hydrophobic, soft segment (PBDO) in the PUR membranes turned hemolytic into non-hemolytic membranes and, for a blood-material contact time of 10 minutes, decreased the thrombogenicity significantly. The 10% PBDO membrane was the least thrombogenic and was also non-hemolytic. The hemolysis degree did not vary significantly with the PBDO content while, for blood-material contact times of 10 minutes, the thrombogenicity increased with an increase in PBDO content above 10%. Membrane thrombogenicity varied with the blood-material contact time. For blood contact times of 10 minutes, all membranes tested were less thrombogenic than glass.
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Affiliation(s)
- D P Queiroz
- Department of Chemical Engineering, Higher Institute of Technology, Lisbon - Portugal
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11
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Kondyurina I, Wise SG, Ngo AKY, Filipe EC, Kondyurin A, Weiss AS, Bao S, Bilek MMM. Plasma mediated protein immobilisation enhances the vascular compatibility of polyurethane with tissue matched mechanical properties. Biomed Mater 2017; 12:045002. [DOI: 10.1088/1748-605x/aa6eb6] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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12
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Chen TF, Siow KS, Ng PY, Nai MH, Lim CT, Yeop Majlis B. Ageing properties of polyurethane methacrylate and off-stoichiometry thiol-ene polymers after nitrogen and argon plasma treatment. J Appl Polym Sci 2016. [DOI: 10.1002/app.44107] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Tiam Foo Chen
- Institute of Microengineering and Nanoelectronics; Universiti Kebangsaan Malaysia; Bangi Selangor 43600 Malaysia
| | - Kim Shyong Siow
- Institute of Microengineering and Nanoelectronics; Universiti Kebangsaan Malaysia; Bangi Selangor 43600 Malaysia
| | - Pei Yuen Ng
- Faculty of Pharmacy; Universiti Kebangsaan Malaysia; Kuala Lumpur 50300 Malaysia
| | - Mui Hoon Nai
- Mechanobiology Institute, National University of Singapore; 5A Engineering Drive 1 Singapore 117411 Singapore
| | - Chwee Teck Lim
- Mechanobiology Institute, National University of Singapore; 5A Engineering Drive 1 Singapore 117411 Singapore
- Department of Biomedical Engineering; National University of Singapore; 9 Engineering Drive 1 Singapore 117575 Singapore
| | - Burhanuddin Yeop Majlis
- Institute of Microengineering and Nanoelectronics; Universiti Kebangsaan Malaysia; Bangi Selangor 43600 Malaysia
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13
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Lukas K, Thomas U, Gessner A, Wehner D, Schmid T, Schmid C, Lehle K. Plasma functionalization of polycarbonaturethane to improve endothelialization—Effect of shear stress as a critical factor for biocompatibility control. J Biomater Appl 2016; 30:1417-28. [DOI: 10.1177/0885328215626072] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Medical devices made of polycarbonaturethane (PCU) combine excellent mechanical properties and little biological degradation, but restricted hemocompatibility. Modifications of PCU might reduce platelet adhesion and promote stable endothelialization. PCU was modified using gas plasma treatment, binding of hydrogels, and coupling of cell-active molecules (modified heparin, anti-thrombin III (ATIII), argatroban, fibronectin, laminin-nonapeptide, peptides with integrin-binding arginine-glycine-aspartic acid (RGD) motif). Biocompatibility was verified with static and dynamic cell culture techniques. Blinded analysis focused on improvement in endothelial cell (EC) adhesion/proliferation, anti-thrombogenicity, reproducible manufacturing process, and shear stress tolerance of ECs. EC adhesion and antithrombogenicity were achieved with 9/35 modifications. Additionally, 6/9 stimulated EC proliferation and 3/6 modification processes were highly reproducible for endothelialization. The latter modifications comprised immobilization of ATIII (A), polyethyleneglycole-diamine-hydrogel (E) and polyethylenimine-hydrogel connected with modified heparin (IH). Under sheer stress, only the IH modification improved EC adhesion within the graft. However, ECs did not arrange in flow direction and cell anchorage was restricted. Despite large variation in surface modification chemistry and improved EC adhesion under static culture conditions, additional introduction of shear stress foiled promising preliminary data. Therefore, biocompatibility testing required not only static tests but also usage of physiological conditions such as shear stress in the case of vascular grafts.
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Affiliation(s)
- Karin Lukas
- IMHR, Institute for Medical Microbiology and Hygiene, University of Regensburg, Regensburg, Germany
| | | | - André Gessner
- IMHR, Institute for Medical Microbiology and Hygiene, University of Regensburg, Regensburg, Germany
| | | | | | - Christof Schmid
- Department of Cardiothoracic Surgery, University Hospital Regensburg, Regensburg, Germany
| | - Karla Lehle
- Department of Cardiothoracic Surgery, University Hospital Regensburg, Regensburg, Germany
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14
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Schendzielorz P, Schmitz T, Moseke C, Gbureck U, FrFlich K, Rak K, Groll JR, Hagen R, Radeloff A. Plasma-Assisted Hydrophilization of Cochlear Implant Electrode Array Surfaces Enables Adhesion of Neurotrophin-Secreting Cells. ORL J Otorhinolaryngol Relat Spec 2014; 76:257-65. [DOI: 10.1159/000368321] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2014] [Accepted: 09/09/2014] [Indexed: 11/19/2022]
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15
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Surface plasma modification and tropoelastin coating of a polyurethane co-polymer for enhanced cell attachment and reduced thrombogenicity. Biomaterials 2014; 35:6797-809. [DOI: 10.1016/j.biomaterials.2014.04.082] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2014] [Accepted: 04/22/2014] [Indexed: 01/12/2023]
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16
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Zhang C, Jiang X, Zhao Z, Mao L, Zhang L, Coates P. Effects of wide-range γ-irradiation doses on the structures and properties of 4,4′-dicyclohexyl methane diisocyanate based poly(carbonate urethane)s. J Appl Polym Sci 2014. [DOI: 10.1002/app.41049] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Chen Zhang
- Key Laboratory of Beijing City for the Preparation and Processing of Novel Polymer Materials; Beijing University of Chemical Technology; Beijing 100029 People's Republic of China
| | - Xiujuan Jiang
- Key Laboratory of Beijing City for the Preparation and Processing of Novel Polymer Materials; Beijing University of Chemical Technology; Beijing 100029 People's Republic of China
| | - Zhiyang Zhao
- Key Laboratory of Beijing City for the Preparation and Processing of Novel Polymer Materials; Beijing University of Chemical Technology; Beijing 100029 People's Republic of China
| | - Lixin Mao
- Key Laboratory of Beijing City for the Preparation and Processing of Novel Polymer Materials; Beijing University of Chemical Technology; Beijing 100029 People's Republic of China
- State Key Laboratory of Organic-Inorganic Composites; Beijing University of Chemical Technology; Beijing 100029 People's Republic of China
| | - Liqun Zhang
- Key Laboratory of Beijing City for the Preparation and Processing of Novel Polymer Materials; Beijing University of Chemical Technology; Beijing 100029 People's Republic of China
- State Key Laboratory of Organic-Inorganic Composites; Beijing University of Chemical Technology; Beijing 100029 People's Republic of China
| | - Phil Coates
- School of Engineering, Design, and Technology, Bradford University; BD7 1DP United Kingdom
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17
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Stem cell responses to plasma surface modified electrospun polyurethane scaffolds. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2014; 10:949-58. [PMID: 24524929 DOI: 10.1016/j.nano.2014.01.010] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2013] [Revised: 01/08/2014] [Accepted: 01/28/2014] [Indexed: 12/13/2022]
Abstract
UNLABELLED The topographical effects from functional materials on stem cell behavior are currently of interest in tissue engineering and regenerative medicine. Here we investigate the influence of argon, oxygen, and hydrogen plasma surface modification of electrospun polyurethane fibers on human embryonic stem cell (hESC) and rat postnatal neural stem cell (NSC) responses. The plasma gases were found to induce three combinations of fiber surface functionalities and roughness textures. On randomly oriented fibers, plasma treatments lead to substantially increased hESC attachment and proliferation as compared to native fibers. Argon plasma was found to induce the most optimal combination of surface functionality and roughness for cell expansion. Contact guided migration of cells and alignment of cell processes were observed on aligned fibers. Neuronal differentiation around 5% was found for all samples and was not significantly affected by the induced variations of surface functional group distribution or individual fiber topography. FROM THE CLINICAL EDITOR In this study the influence of argon, oxygen, and hydrogen plasma surface modification of electrospun polyurethane fibers on human embryonic stem cell and rat postnatal neural stem cell (NSC) responses is studied with the goal of clarifying the potential effects of functional materials on stem cell behavior, a topic of substantial interest in tissue engineering and regenerative medicine.
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18
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Moles MD, Scotchford CA, Ritchie AC. Development of an elastic cell culture substrate for a novel uniaxial tensile strain bioreactor. J Biomed Mater Res A 2013; 102:2356-64. [PMID: 23946144 PMCID: PMC4255296 DOI: 10.1002/jbm.a.34917] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2013] [Revised: 07/30/2013] [Accepted: 08/09/2013] [Indexed: 02/01/2023]
Abstract
Bioreactors can be used for mechanical conditioning and to investigate the mechanobiology of cells in vitro. In this study a polyurethane (PU), Chronoflex AL, was evaluated for use as a flexible cell culture substrate in a novel bioreactor capable of imparting cyclic uniaxial tensile strain to cells. PU membranes were plasma etched, across a range of operating parameters, in oxygen. Contact angle analysis and X-ray photoelectron spectroscopy showed increases in wettability and surface oxygen were related to both etching power and duration. Atomic force microscopy demonstrated that surface roughness decreased after etching at 20 W but was increased at higher powers. The etching parameters, 20 W 40 s, produced membranes with high surface oxygen content (21%), a contact angle of 66° ± 7° and reduced topographical features. Etching and protein conditioning membranes facilitated attachment, and growth to confluence within 3 days, of MG-63 osteoblasts. After 2 days with uniaxial strain (1%, 30 cycles/min, 1500 cycles/day), cellular alignment was observed perpendicular to the principal strain axis, and found to increase after 24 h. The results indicate that the membrane supports culture and strain transmission to adhered cells. © 2013 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 102A: 2356–2364, 2014.
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Affiliation(s)
- Matthew D Moles
- Division of Materials, Mechanics and Structures, Faculty of Mechanical, Materials and Manufacturing Engineering, University of Nottingham, University Park, Nottingham, NG7 2RD, United Kingdom
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The influence of electron beam irradiation conducted in air on the thermal, chemical, structural and surface properties of medical grade polyurethane. Eur Polym J 2013. [DOI: 10.1016/j.eurpolymj.2013.03.034] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Surface characterisation of oxygen plasma treated electrospun polyurethane fibres and their interaction with red blood cells. Eur Polym J 2012. [DOI: 10.1016/j.eurpolymj.2012.01.004] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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21
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Kim HJ, Bae IS, Cho SJ, Boo JH, Lee BC, Heo J, Chung I, Hong B. Synthesis and characteristics of NH2-functionalized polymer films to align and immobilize DNA molecules. NANOSCALE RESEARCH LETTERS 2012; 7:30. [PMID: 22221314 PMCID: PMC3275532 DOI: 10.1186/1556-276x-7-30] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2011] [Accepted: 01/05/2012] [Indexed: 05/27/2023]
Abstract
We developed a method to use NH2-functionalized polymer films to align and immobilize DNA molecules on a Si substrate. The plasma-polymerized cyclohexane film was deposited on the Si substrate according to the radio frequency plasma-enhanced chemical vapor deposition method using a single molecular precursor, and it was then treated by the dielectric barrier discharge method in a nitrogen environment under atmospheric pressure. Changes in the chemistry of the surface functional groups were studied using X-ray photoelectron spectroscopy and Fourier transformed infrared spectroscopy. The wettability of the surfaces was examined using dynamic contact angle measurements, and the surface morphology was evaluated using atomic force microscopy.We utilized a tilting method to align λ-DNA molecules that were immobilized by the electrostatic interaction between the amine groups in NH2-functionalized polymer films and the phosphate groups in the DNA. The DNA was treated with positively charged gold nanoparticles to make a conductive nanowire that uses the DNA as a template. We observed that the NH2-functionalized polymer film was useful for aligning and immobilizing the DNA, and thus the DNA-templated nanowires.
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Affiliation(s)
- Hyung Jin Kim
- School of Information and Communication Engineering, Sungkyunkwan University, Suwon, 440-746, Republic of Korea
| | - In-Seob Bae
- Metal Development Group, MDS Development Team, MDS Division, Samsung Techwin Co., LTD 42, Changwon, 642-716, Republic of Korea
| | - Sang-Jin Cho
- Department of Chemistry and Institute of Basic Science, Sungkyunkwan University, Suwon, 440-746, Republic of Korea
| | - Jin-Hyo Boo
- Department of Chemistry and Institute of Basic Science, Sungkyunkwan University, Suwon, 440-746, Republic of Korea
| | - Byung-Cheo Lee
- Quantum Optics Lab, Korea Atomic Energy Research Institute, Daejeon, 305-353, Republic of Korea
| | - Jinhee Heo
- Korea Institute of Materials Science, Changwon, 641-831, Republic of Korea
| | - Ilsub Chung
- School of Information and Communication Engineering, Sungkyunkwan University, Suwon, 440-746, Republic of Korea
| | - Byungyou Hong
- School of Information and Communication Engineering, Sungkyunkwan University, Suwon, 440-746, Republic of Korea
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22
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Luo J, Porteous N, Sun Y. Rechargeable biofilm-controlling tubing materials for use in dental unit water lines. ACS APPLIED MATERIALS & INTERFACES 2011; 3:2895-903. [PMID: 21721534 PMCID: PMC3161146 DOI: 10.1021/am200576q] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
A simple and practical surface grafting approach was developed to introduce rechargeable N-halamine-based antimicrobial functionality onto the inner surfaces of continuous small-bore polyurethane (PU) dental unit waterline (DUWL) tubing. In this approach, tetrahydrofuran (THF) solution of a free-radical initiator, dicumyl peroxide (DCP), flowed through the PU tubing (inner diameter of 1/16 in., or 1.6 mm) to diffuse DCP into the tubing's inner walls, which was used as initiator in the subsequent grafting polymerization of methacrylamide (MAA) onto the tubing. Upon chlorine bleach treatment, the amide groups of the grafted MAA side chains were transformed into acyclic N-halamines. The reactions were confirmed with attenuated total reflectance infrared (ATR) spectra and iodometric titration. The mechanical properties of the tubing were not significantly affected by the grafting reactions. The biofilm-controlling function of the new N-halamine-based PU tubing was evaluated with Pseudomonas aeruginosa (P. aeruginosa), one of the most isolated water bacteria from DUWLs, in a continuous bacterial flow model. Bacteria culturing and SEM studies showed that the inner surfaces of the new N-halamine-based PU tubing completely prevented bacterial biofilm formation for at least three to four weeks. After that, bacteria began to colonize the tubing surface. However, the lost function was fully regenerated by exposing the tubing inner surfaces to diluted chlorine bleach. The recharging process could be repeated periodically to further extend the biofilm-controlling duration for long-term applications.
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Affiliation(s)
- Jie Luo
- Biomedical Engineering Program, University of South Dakota, Sioux Falls, SD 57107
| | - Nuala Porteous
- Department of Comprehensive Dentistry, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229-4404
| | - Yuyu Sun
- Biomedical Engineering Program, University of South Dakota, Sioux Falls, SD 57107
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Alves P, Pinto S, de Sousa HC, Gil MH. Surface modification of a thermoplastic polyurethane by low-pressure plasma treatment to improve hydrophilicity. J Appl Polym Sci 2011. [DOI: 10.1002/app.34348] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Solouk A, Cousins BG, Mirzadeh H, Solati-Hashtjin M, Najarian S, Seifalian AM. Surface modification of POSS-nanocomposite biomaterials using reactive oxygen plasma treatment for cardiovascular surgical implant applications. Biotechnol Appl Biochem 2011; 58:147-61. [PMID: 21679238 DOI: 10.1002/bab.22] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2010] [Accepted: 03/04/2011] [Indexed: 11/11/2022]
Affiliation(s)
- Atefeh Solouk
- Centre for Nanotechnology and Regenerative Medicine, Division of Surgery and Interventional Science, University College London (UCL), UK
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25
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Faria M, Brogueira P, de Pinho MN. Sub-micron tailoring of bi-soft segment asymmetric polyurethane membrane surfaces with enhanced hemocompatibility properties. Colloids Surf B Biointerfaces 2011; 86:21-7. [PMID: 21497070 DOI: 10.1016/j.colsurfb.2011.03.021] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2011] [Revised: 03/03/2011] [Accepted: 03/11/2011] [Indexed: 12/01/2022]
Abstract
Enhancement of membrane hemocompatibility is achieved through the control of the surface morphology. Bi-soft segment integrally skinned poly(ester urethane urea) (PEUU) membranes containing polycaprolactone (PCL) as a second soft segment are synthesized with PCL-diol ranging from 0% to 15% (w/w). Scanning electron microscopy and atomic force microscopy characterized membrane asymmetry and sub-micron roughnesses, R(a), of top dense surfaces as major assets to the development of platelet/membrane surface interactions. Here we show that the top dense surfaces of asymmetric PEUU membranes can be tailored with different morphologies when the ratio of the two soft segments PPO/PCL varies. A strong correlation between the top surface roughnesses, R(a) and platelet deposition is identified. The membrane with 15% (w/w) of PCL-diol, PEUU 85, shows the smoothest top dense layer with a R(a) as low as 1 nm which is 5 times below the characteristic value of the PEUU membrane with a single soft segment. The PEUU 85 asymmetric membrane displayed minimal platelet deposition and inhibition of extreme stages of platelet activation.
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Affiliation(s)
- Mónica Faria
- ICEMS and Department of Chemical and Biological Engineering, Instituto Superior Tecnico, Technical University of Lisbon, 1049-001 Lisboa, Portugal
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26
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Yang J, Cui F, Lee IS. Surface modifications of magnesium alloys for biomedical applications. Ann Biomed Eng 2011; 39:1857-71. [PMID: 21445692 DOI: 10.1007/s10439-011-0300-y] [Citation(s) in RCA: 108] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2010] [Accepted: 03/15/2011] [Indexed: 12/18/2022]
Abstract
In recent years, research on magnesium (Mg) alloys had increased significantly for hard tissue replacement and stent application due to their outstanding advantages. Firstly, Mg alloys have mechanical properties similar to bone which avoid stress shielding. Secondly, they are biocompatible essential to the human metabolism as a factor for many enzymes. In addition, main degradation product Mg is an essential trace element for human enzymes. The most important reason is they are perfectly biodegradable in the body fluid. However, extremely high degradation rate, resulting in too rapid loss of mechanical strength in chloride containing environments limits their applications. Engineered artificial biomaterials with appropriate mechanical properties, surface chemistry, and surface topography are in a great demand. As the interaction between the cells and tissues with biomaterials at the tissue--implant interface is a surface phenomenon; surface properties play a major role in determining both the biological response to implants and the material response to the physiological condition. Therefore, the ability to modify the surface properties while preserve the bulk properties is important, and surface modification to form a hard, biocompatible and corrosion resistant modified layer have always been an interesting topic in biomaterials field. In this article, attempts are made to give an overview of the current research and development status of surface modification technologies of Mg alloys for biomedical materials research. Further, the advantages/disadvantages of the different methods and with regard to the most promising method for Mg alloys are discussed. Finally, the scientific challenges are proposed based on own research and the work of other scientists.
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Affiliation(s)
- Jingxin Yang
- Advanced Materials Laboratory, Department of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China
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27
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Mrad O, Saunier J, Aymes-Chodur C, Rosilio V, Bouttier S, Agnely F, Aubert P, Vigneron J, Etcheberry A, Yagoubi N. A multiscale approach to assess the complex surface of polyurethane catheters and the effects of a new plasma decontamination treatment on the surface properties. MICROSCOPY AND MICROANALYSIS : THE OFFICIAL JOURNAL OF MICROSCOPY SOCIETY OF AMERICA, MICROBEAM ANALYSIS SOCIETY, MICROSCOPICAL SOCIETY OF CANADA 2010; 16:764-778. [PMID: 20920389 DOI: 10.1017/s1431927610093876] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Polyurethane catheters made of Pellethane 2363-80AE® were treated with a low temperature plasma developed for the decontamination of reusable polymer devices in hospitals. We investigated the modifications of the polymer surface by studying the topographic modifications, the chemical modifications, and their consequences on the wettability and bacterial adhesion. This study showed that plasma treatment modified the topography and grafted oxygen and nitrogen species onto the surface, resulting in an increase in the surface polarity. This effect could be correlated to the number of nitrogen atoms interacting with the surface. Moreover, this study demonstrated the significance of multiscale heterogeneities, and the complexity of industrial medical devices made from polymers. Their surface can be heterogeneous, and they contain additives that can migrate and change the surface composition.
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Affiliation(s)
- Omar Mrad
- Université Paris-Sud 11, EA 401, IFR 141, Faculté de Pharmacie, F-92296 Châtenay Malabry, France
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28
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Dimitrievska S, Petit A, Doillon CJ, Epure L, Ajji A, Yahia L, Bureau MN. Effect of Sterilization on Non-woven Polyethylene Terephthalate Fiber Structures for Vascular Grafts. Macromol Biosci 2010; 11:13-21. [DOI: 10.1002/mabi.201000268] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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29
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Eglin D, Griffon S, Alini M. Thiol-containing degradable poly(thiourethane-urethane)s for tissue engineering. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2010; 21:477-91. [PMID: 20233504 DOI: 10.1163/156856209x424404] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Poly(thiourethane-urethane)s with varying amounts of sulphur were synthesised by a two-step polycondensation consisting of the sequential addition of 1,6-hexamethylene diisocyanate and bis(2-mercaptoethyl) ether in a poly(epsilon-caprolactone) diol solution. Polymers prepared had high weight-average molecular weight and typical microdomains separation, as shown by size-exclusion chromatography and thermal analysis. Polymer surfaces were characterized by X-ray photoelectron spectroscopy and atomic force microscopy. The quantification of thiol groups at the surface was assessed using a fluorescent assay. Thiol concentration ranged between 7 and 14 nmol/cm, and was directly related to the amount of sulphur introduced in the polymerization and the macromolecule chains orientation at the surfaces. A preliminary in vitro degradation study and a proliferation assay were performed. The poly(thiourethane-urethane)s may have important applications as biodegradable and biocompatible materials for cartilage and bone tissue engineering. The surface thiol groups add the prospect of further functionalization. This is an important benefit compared to biodegradable poly(urethane)s that usually present low biological activity.
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Affiliation(s)
- David Eglin
- AO Research Institute Davos, Clavadelerstrasse 8, 7270 Davos Platz, Switzerland.
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Eglin D, Grad S, Gogolewski S, Alini M. Farnesol-modified biodegradable polyurethanes for cartilage tissue engineering. J Biomed Mater Res A 2010; 92:393-408. [PMID: 19191318 DOI: 10.1002/jbm.a.32385] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
A bifunctionalized 3,7,11-trimethyl-2,6,10-dodecatrien-1-diaminobutane amide (isoprenoid) was obtained from 3,7,11-trimethyl-2,6,10-dodecatrien-1-ol (farnesol) in a three-step synthesis. The bifunctionalized isoprenoid was characterized using infrared spectroscopy and (1)H and (13)C nuclear magnetic resonance spectroscopy and was covalently incorporated (0.12 mmol x g(-1)) into the biodegradable aliphatic polyurethane formed on the polycondensation reaction of poly(epsilon-caprolactone) diol, 1,4,3,6-dianhydro-D-sorbitol and 1,6-hexamethylene diisocyanate. Although the covalent incorporation of the isoprenoid molecule into the polyurethane chain modified the surface chemistry of the polymer, it did not affect the viability of attached chondrocytes. Porous 3D scaffolds were produced from the modified and unmodified biodegradable segmented polyurethanes by a salt leaching-phase-inverse technique. The scaffolds were seeded with bovine chondrocytes encapsulated in fibrin gel and cultured in vitro for 14 days. The incorporation of bifunctional isoprenoid into the polyurethane affected the morphology of the scaffolds produced, when compared with the morphology of the scaffolds produced using the same technique from the unmodified polyurethane. As a consequence, there was more uniform cell seeding and more homogeneous distribution of the synthesized extracellular matrix throughout the scaffold resulting in a reduced cell/tissue layer at the edges of the constructs. However, glycosaminoglycan (GAG), DNA content, and chondrocytes phenotype in the scaffolds produced from these two polyurethane formulations did not vary significantly. The findings suggest that the change of surface characteristics and the more open pore structure of the scaffolds produced from the isoprenoid-modified polyurethane are beneficial for the seeding efficiency and the homogeneity of the tissue engineered constructs.
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Affiliation(s)
- David Eglin
- Biomaterials and Tissue Engineering, AO Research Institute, CH-7270 Davos, Switzerland
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31
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Mrad O, Saunier J, Aymes Chodur C, Rosilio V, Agnely F, Aubert P, Vigneron J, Etcheberry A, Yagoubi N. A comparison of plasma and electron beam-sterilization of PU catheters. Radiat Phys Chem Oxf Engl 1993 2010. [DOI: 10.1016/j.radphyschem.2009.08.038] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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32
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Hauser J, Zietlow J, Köller M, Esenwein SA, Halfmann H, Awakowicz P, Steinau HU. Enhanced cell adhesion to silicone implant material through plasma surface modification. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2009; 20:2541-2548. [PMID: 19641852 DOI: 10.1007/s10856-009-3826-x] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2009] [Accepted: 07/14/2009] [Indexed: 05/28/2023]
Abstract
Silicone implant material is widely used in the field of plastic surgery. Despite its benefits the lack of biocompatibility this material still represents a major problem. Due to the surface characteristics of silicone, protein adsorption and cell adhesion on this polymeric material is rather low. The aim of this study was to create a stable collagen I surface coating on silicone implants via glow-discharge plasma treatment in order to enhance cell affinity and biocompatibility of the material. Non-plasma treated, collagen coated and conventional silicone samples (non-plasma treated, non-coated) served as controls. After plasma treatment the change of surface free energy was evaluated by drop-shape analysis. The quality of the collagen coating was analysed by electron microscopy and Time-Of-Flight Secondary Ion Mass Spectrometry. For biocompatibility tests mouse fibroblasts 3T3 were cultivated on the different silicone surfaces and stained with calcein-AM and propidium iodine to evaluate cell viability and adherence. Analysis of the different surfaces revealed a significant increase in surface free energy after plasma pre-treatment. As a consequence, collagen coating could only be achieved on the plasma activated silicone samples. The in vitro tests showed that the collagen coating led to a significant increase in cell adhesion and cell viability.
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Affiliation(s)
- J Hauser
- Department of Plastic Surgery, BG Trauma Center Bergmannsheil, University Hospital, Bochum, Germany.
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33
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Little U, Buchanan F, Harkin-Jones E, Graham B, Fox B, Boyd A, Meenan B, Dickson G. Surface modification of poly(epsilon-caprolactone) using a dielectric barrier discharge in atmospheric pressure glow discharge mode. Acta Biomater 2009; 5:2025-32. [PMID: 19269907 DOI: 10.1016/j.actbio.2009.01.042] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2008] [Revised: 01/07/2009] [Accepted: 01/26/2009] [Indexed: 10/21/2022]
Abstract
The role of roughening and functionalization processes involved in modifying the wettability of poly(epsilon-caprolactone) (PCL) after treatment by an atmospheric pressure glow discharge plasma is discussed. The change in the ratio of CO/C-O bonds is a significant factor influencing the wettability of PCL. As the contact angle decreases, the level of CO bonds tends to rise. Surface roughness alterations are the driving force for lasting increases in wettability, while the surface functional species are shorter lived. We can approximate from ageing that the increase in wettability for PCL after plasma treatment is 55-60% due to roughening and 40-45% due to surface functionalization for the plasma device investigated.
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Jóźwiak AB, Kielty CM, Black RA. Surface functionalization of polyurethane for the immobilization of bioactive moieties on tissue scaffolds. ACTA ACUST UNITED AC 2008. [DOI: 10.1039/b719025e] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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35
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Krishna Y, Sheridan CM, Kent DL, Grierson I, Williams RL. Polydimethylsiloxane as a substrate for retinal pigment epithelial cell growth. J Biomed Mater Res A 2007; 80:669-78. [PMID: 17058209 DOI: 10.1002/jbm.a.30953] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Retinal pigment epithelial (RPE) cell transplantation represents potential treatment for age-related macular degeneration (AMD). Because delivery of isolated cells can cause serious complications, it is necessary to develop a suitable transplant membrane that could support an intact functioning RPE monolayer. Polydimethylsiloxane (PDMS) possesses the physical properties required for a transplanting device and is widely used clinically. We have investigated the use of PDMS as a potential surface for the growth of healthy RPE monolayers. PDMS discs were surface modified by air and ammonia gas plasma treatments. Dynamic contact angles were measured to determine the changes in wettability. Human ARPE-19 cells were seeded onto untreated and treated samples. Cell number, morphology and monolayer formation, cytotoxicity, and phagocytosis of photoreceptor outer segments (POS) were assessed at set time-points. Air plasma treatment increased the wettability of PDMS. This significantly enhanced cell growth, reaching confluence by day 7. Immunofluorescence revealed well-defined actin staining, monolayer formation, and high cell viability on air plasma treated and untreated surfaces, and to a lesser extent, on ammonia plasma treated. Furthermore, RPE monolayers were able to demonstrate phagocytosis of POS in a time-dependent manner similar to control. PDMS can support an intact functional monolayer of healthy differentiated RPE cells.
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Affiliation(s)
- Yamini Krishna
- Department of Ophthalmology, School of Clinical Sciences, The University of Liverpool, Liverpool L69 3GA, United Kingdom.
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36
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Park KS, Kim SM, Kim MS, Lee I, Rhee JM, Lee HB, Khang G. Effect of cell-adhesive-molecule-coated poly(lactide-co-glycolide) film on the cellular behaviors of olfactory ensheathing cells and Schwann cells. J Appl Polym Sci 2007. [DOI: 10.1002/app.27146] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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37
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Yuen C, Williams R, Batterbury M, Grierson I. Modification of the surface properties of a lens material to influence posterior capsular opacification. Clin Exp Ophthalmol 2006; 34:568-74. [PMID: 16925705 DOI: 10.1111/j.1442-9071.2006.01278.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
PURPOSE To study the effect of surface properties of materials on cellular behaviour and the formation of posterior capsular opacification (PCO). METHODS Polymethylmethacrylate, silicone and a hydrophobic acrylic were plasma treated and used in tissue culture. The changes in surface properties were quantified by dynamic contact angle measurements. Bovine lens epithelial cells (BLECs) were seeded onto these materials and cultured for 1 month. Serial photographs were taken. The cells were then fixed and stained to facilitate counting. RESULTS Plasma treatment significantly increased the hydrophilicity of surfaces. BLECs grew on all surfaces but significantly more cells adhered to the treated than the untreated surfaces. On the untreated surfaces the BLECs had a fibroblastic morphology whereas on the treated surfaces the cells maintained their epithelial morphology. CONCLUSIONS Posterior capsular opacification is a form of wound healing and the behaviour of lens epithelial cells is central to its progression. Emphasis has been on the elimination of residual lens epithelial cells to combat PCO. This study demonstrated that the phenotype of BLECs was influenced by the surface properties of the intraocular lens materials. Gas plasma treatment of the materials increased their hydrophilicity and allowed the adhered BLECs to maintain their normal epithelial morphology. We believe that controlled growth of lens epithelial cells may reduce the incidence of PCO.
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Affiliation(s)
- Conrad Yuen
- Ophthalmology, University Clinical Department, School of Clinical Sciences, University of Liverpool, Liverpool, UK.
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38
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Jiang M, Hu P. Surface modification of a biomedical poly(ester)urethane by several low-powered gas plasmas. J Appl Polym Sci 2006. [DOI: 10.1002/app.23249] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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39
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Horan RL, Collette AL, Lee C, Antle K, Chen J, Altman GH. Yarn design for functional tissue engineering. J Biomech 2006; 39:2232-40. [PMID: 16182301 DOI: 10.1016/j.jbiomech.2005.07.007] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2004] [Accepted: 07/08/2005] [Indexed: 11/20/2022]
Abstract
Tissue engineering requires the ability to design scaffolds with mechanical properties similar to those of the native tissue. Here, B. mori silk yarns are used as a model system to demonstrate the potential benefits and drawbacks of several textile methods used to fabricate tissue engineering scaffolds. Fibers are plied, twisted, cabled, braided, and/or textured to form several geometries with a wide range of mechanical outcomes. Predictable changes in ultimate tensile strength and stiffness are demonstrated following processing and as a function of test environment. The mechanical effects of increasing turns per inch and combining groups of fibers into higher-order yarn structures are demonstrated. Braids, one of the most commonly used textile structures, are shown to be limited by a change in stiffness following the locking-angle and therefore, potentially not the ideal structure for tissue engineering. Cabled yarns appear to allow the most flexibility in mechanical outcomes with a highly organized geometry. Twisted yarns, while more economical than cabled yarns, result in a higher stiffness and lower percent elongation at break than cabled yarns.
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Affiliation(s)
- Rebecca L Horan
- Biomedical Engineering Department, Tufts University, 4 Colby St., Room 153, Medford, MA 02155, USA
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40
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Williams RL, Krishna Y, Dixon S, Haridas A, Grierson I, Sheridan C. Polyurethanes as potential substrates for sub-retinal retinal pigment epithelial cell transplantation. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2005; 16:1087-92. [PMID: 16362205 DOI: 10.1007/s10856-005-4710-y] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2005] [Accepted: 07/18/2005] [Indexed: 05/05/2023]
Abstract
Transplantation of cultured retinal pigment epithelial (RPE) cells under the failing macular is a potential treatment for age related macular degeneration. An important step in the development of this procedure is the identification of a suitable membrane on which to grow and transplant the cells. This paper evaluates the potential of using polyurethanes in this application since they possess several of the required properties, such as, flexibility, robustness, biostability and good biocompatiblilty although their hydrophobicity can limit cell adhesion. Three commercially available polyether urethanes (Pellethane, Tecoflex and Zytar) were evaluated in terms of their wettability using dynamic contact angle analysis and their ability to support a monolayer of functioning RPE cells (ARPE-19) . Furthermore Pellethane and Tecoflex were treated with a simple air plasma treatment and analysed as above. In the "as received condition" only a few RPE cells attached to the Pellethane and Tecoflex and remained clumped. RPE cells grew to confluence on the Zytar substrate by 7 days without further surface modification. Air gas plasma treatment of both Pellethane and Tecoflex increased the wettability of the surfaces and this resulted in the growth of a monolayer of well-spread RPE cells on both materials. Morphologically these cells grew with a normal 'cobblestone' phenotype. These results demonstrate the potential of these polyurethanes for this application.
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Affiliation(s)
- R L Williams
- Clinical Engineering, University of Liverpool, L69 3GA, UK.
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Williams RL, Wilson DJ, Rhodes NP. Stability of plasma-treated silicone rubber and its influence on the interfacial aspects of blood compatibility. Biomaterials 2005; 25:4659-73. [PMID: 15120512 DOI: 10.1016/j.biomaterials.2003.12.010] [Citation(s) in RCA: 74] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2003] [Accepted: 12/04/2003] [Indexed: 10/26/2022]
Abstract
Medical-grade polydimethylsiloxane elastomer was subjected to low-powered plasma treatment in the presence of four different gases: O(2), Ar, N(2) and NH(3). Changes to the surface chemistry immediately after processing and the stability of the treatments following ageing in phosphate buffered saline or air for up to 1 month were investigated using X-ray photoelectron spectroscopy and dynamic contact angle analysis. Changes in surface morphology were assessed using optical microscopy and atomic force microscopy. All treatments resulted in an increase in wettability, attributed to major changes in chemistry combined with modest etching. Furthermore, the primary site of attack of the plasma species appeared to be dependent upon the feed gas implemented. The two main chemical changes observed after ageing were due to reactions with the storage media and relaxation processes resulting in further changes in wettability. The influence of the surface modifications on the blood compatibility of the materials was investigated by assessing contact phase activation using a partial thromboplastin time assay. It was demonstrated that the O(2) and Ar plasma treatments reduced the performance of the silicone but the N(2) and NH(3) treatments had a significantly beneficial effect on the activation of the coagulation cascade.
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Affiliation(s)
- R L Williams
- Department of Clinical Engineering, University of Liverpool, Duncan Building, Daulby Street, Liverpool L69 3GA, UK.
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Li Y, Huang Y. Preparation of collagen-polyurethane composite film and its subcutaneous implantation in rats: The improvement of tissue compatibility. J Appl Polym Sci 2005. [DOI: 10.1002/app.22150] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Sheridan C, Williams R, Grierson I. Basement membranes and artificial substrates in cell transplantation. Graefes Arch Clin Exp Ophthalmol 2003; 242:68-75. [PMID: 14628146 DOI: 10.1007/s00417-003-0800-z] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Affiliation(s)
- Carl Sheridan
- Unit of Ophthalmology, Department of Medicine, University Clinical Departments, University of Liverpool, UK.
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