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Huang WH, Chen PH, Chen CW, Su CS, Tang M, Tsai JC, Chen YP, Lin FH. Experimental Study for the Sorption and Diffusion of Supercritical Carbon Dioxide into Polyetherimide. Molecules 2024; 29:4233. [PMID: 39275083 PMCID: PMC11397116 DOI: 10.3390/molecules29174233] [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: 07/30/2024] [Revised: 08/22/2024] [Accepted: 08/30/2024] [Indexed: 09/16/2024] Open
Abstract
Supercritical carbon dioxide (SCCO2) is a non-toxic and environmentally friendly fluid and has been used in polymerization reactions, processing, foaming, and plasticizing of polymers. Exploring the behavior and data of SCCO2 sorption and dissolution in polymers provides essential information for polymer applications. This study investigated the sorption and diffusion of SCCO2 into polyetherimide (PEI). The sorption and desorption processes of SCCO2 in PEI samples were measured in the temperature range from 40 to 60 °C, the pressure range from 20 to 40 MPa, and the sorption time from 0.25 to 52 h. This study used the ex situ gravimetric method under different operating conditions and applied the Fickian diffusion model to determine the mass diffusivity of SCCO2 during sorption and desorption processes into and out of PEI. The equilibrium mass gain fraction of SCCO2 into PEI was reported from 9.0 wt% (at 60 °C and 20 MPa) to 12.8 wt% (at 40 °C and 40 MPa). The sorption amount increased with the increasing SCCO2 pressure and decreased with the increasing SCCO2 temperature. This study showed the crossover phenomenon of equilibrium mass gain fraction isotherms with respect to SCCO2 density. Changes in the sorption mechanism in PEI were observed when the SCCO2 density was at approximately 840 kg/m3. This study qualitatively performed FTIR analysis during the SCCO2 desorption process. A CO2 antisymmetric stretching mode was observed near a wavenumber of 2340 cm-1. A comparison of loss modulus measurements of pure and SCCO2-treated PEI specimens showed the shifting of loss maxima. This result showed that the plasticization of PEI was achieved through the sorption process of SCCO2.
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Affiliation(s)
- Wei-Heng Huang
- Department of Chemical and Materials Engineering, Chinese Culture University, Taipei 111396, Taiwan
| | - Pei-Hua Chen
- Department of Biomedical Engineering, National Taiwan University, Taipei 106319, Taiwan
- Department of Orthopedics, Shuang Ho Hospital, Taipei Medical University, New Taipei City 235041, Taiwan
| | - Chin-Wen Chen
- Department of Molecular Science and Engineering, National Taipei University of Technology, Taipei 106344, Taiwan
| | - Chie-Shaan Su
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei 106344, Taiwan
| | - Muoi Tang
- Department of Chemical and Materials Engineering, Chinese Culture University, Taipei 111396, Taiwan
| | - Jung-Chin Tsai
- Department of Chemical Engineering, Ming Chi University of Technology, New Taipei City 243303, Taiwan
| | - Yan-Ping Chen
- Department of Chemical Engineering, National Taiwan University, Taipei 106319, Taiwan
| | - Feng-Huei Lin
- Department of Biomedical Engineering, National Taiwan University, Taipei 106319, Taiwan
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Li J, Qiao W, Liu Y, Lei H, Wang S, Xu Y, Zhou Y, Wen S, Yang Z, Wan W, Shi J, Dong N, Wu Y. Facile engineering of interactive double network hydrogels for heart valve regeneration. Nat Commun 2024; 15:7462. [PMID: 39198477 PMCID: PMC11358442 DOI: 10.1038/s41467-024-51773-0] [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: 03/07/2024] [Accepted: 08/16/2024] [Indexed: 09/01/2024] Open
Abstract
Regenerative heart valve prostheses are essential for treating valvular heart disease, which requested interactive materials that can adapt to the tissue remodeling process. Such materials typically involves intricate designs with multiple active components, limiting their translational potential. This study introduces a facile method to engineer interactive materials for heart valve regeneration using 1,1'-thiocarbonyldiimidazole (TCDI) chemistry. TCDI crosslinking forms cleavable thiourea and thiocarbamate linkages which could gradually release H2S during degradation, therefore regulates the immune microenvironment and accelerates tissue remodeling. By employing this approach, a double network hydrogel was formed on decellularized heart valves (DHVs), showcasing robust anti-calcification and anti-thrombosis properties post fatigue testing. Post-implantation, the DHVs could adaptively degrade during recellularization, releasing H2S to further support tissue regeneration. Therefore, the comprehensive endothelial cell coverage and notable extracellular matrix remodeling could be clearly observed. This accessible and integrated strategy effectively overcomes various limitations of bioprosthetic valves, showing promise as an attractive approach for immune modulation of biomaterials.
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Affiliation(s)
- Jinsheng Li
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan, China
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, State Key Laboratory of Materials Processing and Die & Mould Technology, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan, China
| | - Weihua Qiao
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan, China
| | - Yuqi Liu
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan, China
| | - Huiling Lei
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, State Key Laboratory of Materials Processing and Die & Mould Technology, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan, China
| | - Shuangshuang Wang
- School of Life Science and Chemistry, Wuhan Donghu University, Wuhan, P. R. China
| | - Yin Xu
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan, China
| | - Ying Zhou
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan, China
| | - Shuyu Wen
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan, China
| | - Zhuoran Yang
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, State Key Laboratory of Materials Processing and Die & Mould Technology, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan, China
| | - Wenyi Wan
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan, China
| | - Jiawei Shi
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan, China.
| | - Nianguo Dong
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan, China.
| | - Yuzhou Wu
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, State Key Laboratory of Materials Processing and Die & Mould Technology, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan, China.
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Radu ER, Voicu SI, Thakur VK. Polymeric Membranes for Biomedical Applications. Polymers (Basel) 2023; 15:polym15030619. [PMID: 36771921 PMCID: PMC9919920 DOI: 10.3390/polym15030619] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2022] [Revised: 01/16/2023] [Accepted: 01/21/2023] [Indexed: 01/27/2023] Open
Abstract
Polymeric membranes are selective materials used in a wide range of applications that require separation processes, from water filtration and purification to industrial separations. Because of these materials' remarkable properties, namely, selectivity, membranes are also used in a wide range of biomedical applications that require separations. Considering the fact that most organs (apart from the heart and brain) have separation processes associated with the physiological function (kidneys, lungs, intestines, stomach, etc.), technological solutions have been developed to replace the function of these organs with the help of polymer membranes. This review presents the main biomedical applications of polymer membranes, such as hemodialysis (for chronic kidney disease), membrane-based artificial oxygenators (for artificial lung), artificial liver, artificial pancreas, and membranes for osseointegration and drug delivery systems based on membranes.
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Affiliation(s)
- Elena Ruxandra Radu
- Department of Analytical Chemistry and Environmental Engineering, University Politehnica of Bucharest, 011061 Bucharest, Romania
- Advanced Polymers Materials Group, University Politehnica of Bucharest, 011061 Bucharest, Romania
| | - Stefan Ioan Voicu
- Department of Analytical Chemistry and Environmental Engineering, University Politehnica of Bucharest, 011061 Bucharest, Romania
- Advanced Polymers Materials Group, University Politehnica of Bucharest, 011061 Bucharest, Romania
- Correspondence: (S.I.V.); (V.K.T.)
| | - Vijay Kumar Thakur
- Biorefining and Advanced Materials Research Center, Scotland’s Rural College (SRUC), Kings Buildings, Edinburgh EH9 3JG, UK
- School of Engineering, University of Petroleum & Energy Studies (UPES), Dehradun 248007, Uttarakhand, India
- Centre for Research & Development, Chandigarh University, Mohali 140413, Punjab, India
- Correspondence: (S.I.V.); (V.K.T.)
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Abdelrasoul A, Zhu N, Shoker A. Investigation on Human Serum Protein Depositions Inside Polyvinylidene Fluoride-Based Dialysis Membrane Layers Using Synchrotron Radiation Micro-Computed Tomography (SR-μCT). MEMBRANES 2023; 13:117. [PMID: 36676924 PMCID: PMC9864633 DOI: 10.3390/membranes13010117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 12/29/2022] [Accepted: 01/01/2023] [Indexed: 06/17/2023]
Abstract
Hemodialysis (HD) membrane fouling with human serum proteins is a highly undesirable process that results in blood activations with further severe consequences for HD patients. Polyvinylidene fluoride (PVDF) membranes possess a great extent of protein adsorption due to hydrophobic interaction between the membrane surface and non-polar regions of proteins. In this study, a PVDF membrane was modified with a zwitterionic (ZW) polymeric structure based on a poly (maleic anhydride-alt-1-decene), 3-(dimethylamino)-1-propylamine derivative and 1,3-propanesultone. Fourier transform infrared spectroscopy (FTIR), scanning electron microscope (SEM), and zeta potential analyses were used to determine the membrane's characteristics. Membrane fouling with human serum proteins (human serum albumin (HSA), fibrinogen (FB), and transferrin (TRF)) was investigated with synchrotron radiation micro-computed tomography (SR-μCT), which allowed us to trace the protein location layer by layer inside the membrane. Both membranes (PVDF and modified PVDF) were detected to possess the preferred FB adsorption due to the Vroman effect, resulting in an increase in FB content in the adsorbed protein compared to FB content in the protein mixture solution. Moreover, FB was shown to only replace HSA, and no significant role of TRF in the Vroman effect was detected; i.e., TRF content was nearly the same both in the adsorbed protein layer and in the protein mixture solution. Surface modification of the PVDF membrane resulted in increased FB adsorption from both the protein mixture and the FB single solution, which is supposed to be due to the presence of an uncompensated negative charge that is located at the COOH group in the ZW polymer.
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Affiliation(s)
- Amira Abdelrasoul
- Department of Chemical and Biological Engineering, University of Saskatchewan, 57 Campus Drive, Saskatoon, SK S7N 5A9, Canada
- Division of Biomedical Engineering, University of Saskatchewan, 57 Campus Drive, Saskatoon, SK S7N 5A9, Canada
| | - Ning Zhu
- Canadian Light Source, 44 Innovation Blvd, Saskatoon, SK S7N 2V3, Canada
| | - Ahmed Shoker
- Nephrology Division, College of Medicine, University of Saskatchewan, 107 Wiggins Rd, Saskatoon, SK S7N 5E5, Canada
- Saskatchewan Transplant Program, St. Paul’s Hospital, 1702 20th Street West, Saskatoon, SK S7M 0Z9, Canada
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Sishi Z, Bahig J, Kalugin D, Shoker A, Zhu N, Abdelrasoul A. Influence of Clinical Hemodialysis Membrane Morphology and Chemistry on Protein Adsorption and Inflammatory Biomarkers Released: In-Situ Synchrotron Imaging, Clinical and Computational Studies. BIOMEDICAL ENGINEERING ADVANCES 2022. [DOI: 10.1016/j.bea.2022.100070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
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6
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Terzopoulou Z, Zamboulis A, Koumentakou I, Michailidou G, Noordam MJ, Bikiaris DN. Biocompatible Synthetic Polymers for Tissue Engineering Purposes. Biomacromolecules 2022; 23:1841-1863. [PMID: 35438479 DOI: 10.1021/acs.biomac.2c00047] [Citation(s) in RCA: 64] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Synthetic polymers have been an integral part of modern society since the early 1960s. Besides their most well-known applications to the public, such as packaging, construction, textiles and electronics, synthetic polymers have also revolutionized the field of medicine. Starting with the first plastic syringe developed in 1955 to the complex polymeric materials used in the regeneration of tissues, their contributions have never been more prominent. Decades of research on polymeric materials, stem cells, and three-dimensional printing contributed to the rapid progress of tissue engineering and regenerative medicine that envisages the potential future of organ transplantations. This perspective discusses the role of synthetic polymers in tissue engineering, their design and properties in relation to each type of application. Additionally, selected recent achievements of tissue engineering using synthetic polymers are outlined to provide insight into how they will contribute to the advancement of the field in the near future. In this way, we aim to provide a guide that will help scientists with synthetic polymer design and selection for different tissue engineering applications.
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Affiliation(s)
- Zoi Terzopoulou
- Laboratory of Chemistry and Technology of Polymers and Dyes, Department of Chemistry, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece
| | - Alexandra Zamboulis
- Laboratory of Chemistry and Technology of Polymers and Dyes, Department of Chemistry, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece
| | - Ioanna Koumentakou
- Laboratory of Chemistry and Technology of Polymers and Dyes, Department of Chemistry, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece
| | - Georgia Michailidou
- Laboratory of Chemistry and Technology of Polymers and Dyes, Department of Chemistry, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece
| | - Michiel Jan Noordam
- Laboratory of Chemistry and Technology of Polymers and Dyes, Department of Chemistry, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece
| | - Dimitrios N Bikiaris
- Laboratory of Chemistry and Technology of Polymers and Dyes, Department of Chemistry, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece
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7
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Qiu X, Mao S, Yin J, Yang Y. An anisotropic immerse precipitation process for the preparation of polymer membranes. SOFT MATTER 2022; 18:1525-1531. [PMID: 35103272 DOI: 10.1039/d1sm01613j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
We study the immerse precipitation process in a ternary polymer/solvent/non-solvent system by numerically solving the two-dimensional Cahn-Hilliard phase field equation. In particular, we introduce anisotropic mobility, namely the mobility of a polymer varies over different spatial directions, and focus on the porosity morphology of the obtained polymer membrane. Simulations reveal that as the anisotropy increases in the polymer mobility, the polymer pattern changes from nearly isotropic and random voids to strips parallel to the direction with smaller mobility. The influence of anisotropy quickly saturates. The anisotropic mobility model is also applied to a ternary system mimicking the preparation of a hollow fiber membrane, and shows strong effects on the membrane porosity pattern.
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Affiliation(s)
- Xuwen Qiu
- State Key Laboratory for Turbulence and Complex Systems, Department of Mechanics and Engineering Science, College of Engineering, Peking University, Beijing 100871, China.
- Computational Engineering and Robotics Lab, Department of Mechanical Engineering, Carnegie Mellon University, Pittsburgh, PA, 15213, USA
| | - Sheng Mao
- State Key Laboratory for Turbulence and Complex Systems, Department of Mechanics and Engineering Science, College of Engineering, Peking University, Beijing 100871, China.
| | - Jun Yin
- The State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou, 310028, China
| | - Yantao Yang
- State Key Laboratory for Turbulence and Complex Systems, Department of Mechanics and Engineering Science, College of Engineering, Peking University, Beijing 100871, China.
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Westphalen H, Kalugin D, Abdelrasoul A. Structure, function, and adsorption of highly abundant blood proteins and its critical influence on hemodialysis patients: A critical review. BIOMEDICAL ENGINEERING ADVANCES 2021. [DOI: 10.1016/j.bea.2021.100021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
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9
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Quality of life of parents with children with congenital abnormalities: a systematic review with meta-analysis of assessment methods and levels of quality of life. Qual Life Res 2021; 31:991-1011. [PMID: 34482484 DOI: 10.1007/s11136-021-02986-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/26/2021] [Indexed: 10/20/2022]
Abstract
PURPOSE To quantify and understand how to assess the quality of life and health-related QoL of parents with children with congenital abnormalities. METHODS We conducted a systematic review with meta-analysis. The search was carried out in 5 bibliographic databases and in ClinicalTrials.gov. No restriction on language or date of publication was applied. This was complemented by references of the studies found and studies of evidence synthesis, manual search of abstracts of relevant congresses/scientific meetings and contact with experts. We included primary studies (observational, quasi-experimental and experimental studies) on parents of children with CA reporting the outcome quality of life (primary outcome) of parents, independently of the intervention/exposure studied. RESULTS We included 75 studies (35 observational non-comparatives, 31 observational comparatives, 4 quasi-experimental and 5 experimental studies). We identified 27 different QoL instruments. The two most frequently used individual QoL instruments were WHOQOL-Bref and SF-36. Relatively to family QoL tools identified, we emphasized PedsQL FIM, IOFS and FQOL. Non-syndromic congenital heart defects were the CA most frequently studied. Through the analysis of comparative studies, we verified that parental and familial QoL were impaired in this population. CONCLUSIONS This review highlights the relevance of assessing QoL in parents with children with CA and explores the diverse QoL assessment tools described in the literature. Additionally, results indicate a knowledge gap that can help to draw new paths to future research. It is essential to assess QoL as a routine in healthcare providing and to implement strategies that improve it.
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Polysulfone/Polyetherimide Ultrafiltration composite membranes constructed on a three-component Nylon-fiberglass-Nylon support for azo dyes removal: Experimental and molecular dynamics simulations. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126941] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Jurak M, Wiącek AE, Ładniak A, Przykaza K, Szafran K. What affects the biocompatibility of polymers? Adv Colloid Interface Sci 2021; 294:102451. [PMID: 34098385 DOI: 10.1016/j.cis.2021.102451] [Citation(s) in RCA: 62] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 05/21/2021] [Accepted: 05/22/2021] [Indexed: 02/07/2023]
Abstract
In recent decades synthetic polymers have gained increasing popularity, and nowadays they are an integral part of people's daily lives. In addition, owing to their competitive advantage and being susceptible to modification, polymers have stimulated the fast development of innovative technologies in many areas of science. Biopolymers are of particular interest in various branches of medicine, such as implantology of bones, cartilage and skin tissues as well as blood vessels. Biomaterials with such specific applications must have appropriate mechanical and strength characteristics and above all they must be compatible with the surrounding tissues, human blood and its components, i.e. exhibit high hemo- and biocompatibility, low or no thrombo- and carcinogenicity, foreign body response (host response), appropriate osteoconduction, osteoinduction and mineralization. For biocompatibility improvement many surface treatment techniques have been utilized leading to fabricate the polymer biomaterials of required properties, also at nanoscale. This review paper discusses the most important physicochemical and biological factors that affect the biocompatibility, thus the reaction of the living organism after insertion of the polymer-based biomaterials, i.e. surface modification and/or degradation, surface composition (functional groups and charge), size and shapes, hydrophilic-hydrophobic character, wettability and surface free energy, topography (roughness, stiffness), crystalline and amorphous structure, nanostructure, cell adhesion and proliferation, cellular uptake. Particularly, the application of polysaccharides (chitosan, cellulose, starch) in the tissue engineering is emphasized.
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Wen C, Odle R, Cheng S. Coarse-Grained Molecular Dynamics Modeling of a Branched Polyetherimide. Macromolecules 2021. [DOI: 10.1021/acs.macromol.0c01440] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Chengyuan Wen
- Department of Physics, Center for Soft Matter and Biological Physics, and Macromolecules Innovation Institute, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, United States
| | - Roy Odle
- SABIC, 1 Lexan Lane, Mt. Vernon, Indiana 47620, United States
| | - Shengfeng Cheng
- Department of Physics, Center for Soft Matter and Biological Physics, and Macromolecules Innovation Institute, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, United States
- Department of Mechanical Engineering, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, United States
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Malchesky PS. Thomas Groth, PhD to serve as Co-Editor, Europe, ESAO Representative. Artif Organs 2020; 44:351-354. [PMID: 32185810 DOI: 10.1111/aor.13668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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14
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Santos AMD, Habert AC, Ferraz HC. POLYETHERIMIDE/POLYVINYLPYRROLIDONE HOLLOW-FIBER MEMBRANES FOR USE IN HEMODIALYSIS. BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING 2019. [DOI: 10.1590/0104-6632.20190364s20180529] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/02/2023]
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Fabrication and In Vitro Evaluation of 3D Printed Porous Polyetherimide Scaffolds for Bone Tissue Engineering. BIOMED RESEARCH INTERNATIONAL 2019; 2019:2076138. [PMID: 31815125 PMCID: PMC6877952 DOI: 10.1155/2019/2076138] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 08/15/2019] [Accepted: 09/24/2019] [Indexed: 01/12/2023]
Abstract
For bone tissue engineering, the porous scaffold should provide a biocompatible environment for cell adhesion, proliferation, and differentiation and match the mechanical properties of native bone tissue. In this work, we fabricated porous polyetherimide (PEI) scaffolds using a three-dimensional (3D) printing system, and the pore size was set as 800 μm. The morphology of 3D PEI scaffolds was characterized by the scanning electron microscope. To investigate the mechanical properties of the 3D PEI scaffold, the compressive mechanical test was performed via an electronic universal testing system. For the in vitro cell experiment, bone marrow stromal cells (BMSCs) were cultured on the surface of the 3D PEI scaffold and PEI slice, and cytotoxicity, cell adhesion, and cell proliferation were detected to verify their biocompatibility. Besides, the alkaline phosphatase staining and Alizarin Red staining were performed on the BMSCs of different samples to evaluate the osteogenic differentiation. Through these studies, we found that the 3D PEI scaffold showed an interconnected porous structure, which was consistent with the design. The elastic modulus of the 3D PEI scaffold (941.33 ± 65.26 MPa) falls in the range of modulus for the native cancellous bone. Moreover, the cell proliferation and morphology on the 3D PEI scaffold were better than those on the PEI slice, which revealed that the porous scaffold has good biocompatibility and that no toxic substances were produced during the progress of high-temperature 3D printing. The osteogenic differentiation level of the 3D PEI scaffold and PEI slice was equal and ordinary. All of these results suggest the 3D printed PEI scaffold would be a potential strategy for bone tissue engineering.
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Alqaheem Y, Alomair A. Recent developments in polyetherimide membrane for gas separation. J CHIN CHEM SOC-TAIP 2019. [DOI: 10.1002/jccs.201900060] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yousef Alqaheem
- Petroleum Research CentreKuwait Institute for Scientific Research Ahmadi Kuwait
| | - Abdulaziz Alomair
- Petroleum Research CentreKuwait Institute for Scientific Research Ahmadi Kuwait
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18
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Biocompatibility of Plasma-Treated Polymeric Implants. MATERIALS 2019; 12:ma12020240. [PMID: 30642038 PMCID: PMC6356963 DOI: 10.3390/ma12020240] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 12/25/2018] [Accepted: 01/02/2019] [Indexed: 01/16/2023]
Abstract
Cardiovascular diseases are one of the main causes of mortality in the modern world. Scientist all around the world are trying to improve medical treatment, but the success of the treatment significantly depends on the stage of disease progression. In the last phase of disease, the treatment is possible only by implantation of artificial graft. Most commonly used materials for artificial grafts are polymer materials. Despite different industrial procedures for graft fabrication, their properties are still not optimal. Grafts with small diameters (<6 mm) are the most problematic, because the platelets are more likely to re-adhere. This causes thrombus formation. Recent findings indicate that platelet adhesion is primarily influenced by blood plasma proteins that adsorb to the surface immediately after contact of a synthetic material with blood. Fibrinogen is a key blood protein responsible for the mechanisms of activation, adhesion and aggregation of platelets. Plasma treatment is considered as one of the promising methods for improving hemocompatibility of synthetic materials. Another method is endothelialization of materials with Human Umbilical Vein Endothelial cells, thus forming a uniform layer of endothelial cells on the surface. Extensive literature review led to the conclusion that in this area, despite numerous studies there are no available standardized methods for testing the hemocompatibility of biomaterials. In this review paper, the most promising methods to gain biocompatibility of synthetic materials are reported; several hypotheses to explain the improvement in hemocompatibility of plasma treated polymer surfaces are proposed.
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Adhesion and Proliferation of Osteoblast-Like Cells on Porous Polyetherimide Scaffolds. BIOMED RESEARCH INTERNATIONAL 2018; 2018:1491028. [PMID: 30598988 PMCID: PMC6288576 DOI: 10.1155/2018/1491028] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Revised: 11/06/2018] [Accepted: 11/08/2018] [Indexed: 11/18/2022]
Abstract
The purpose of this work was to investigate the porous polyetherimide scaffold (P-PEIs) as an alternative biopolymer for bone tissue engineering. The P-PEIs was fabricated via solvent casting and particulate leaching technique. The morphology, phase composition, roughness, hydrophilicity, and biocompatibility of P-PEIs were evaluated and compared with polyetherimide (PEI) and Ti6Al4V disks. P-PEIs showed a biomimetic porous structure with a modulus of 78.95 ± 2.30 MPa. The water contact angle of P-PEIs was 75.4 ± 3.39°, which suggested that P-PEIs had a wettability surface. Moreover, P-PEIs provides a feasible environment for cell adhesion and proliferation. The relative cell adhesion capability and the cell morphology on P-PEIs were better than PEI and Ti6Al4V samples. Furthermore, the MC3T3-E1 cells on P-PEIs showed faster proliferation rate than other groups. It was revealed that the P-PEIs could be a potential material for the application of bone regeneration.
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Santos AMD, Habert AC, Ferraz HC. Development of functionalized polyetherimide/polyvinylpyrrolidone membranes for application in hemodialysis. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2017; 28:131. [PMID: 28744613 DOI: 10.1007/s10856-017-5946-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Accepted: 07/14/2017] [Indexed: 06/07/2023]
Abstract
The present study aimed to synthesize membranes for hemodialysis based on polyetherimide (PEI) and polyvinylpyrrolidone (PVP), with chemical immobilization of heparin on its surface to increase blood compatibility. The synthesized PEI/PVP membranes were characterized by morphological analysis and transport properties, as well by infrared spectroscopy (FT-IR), protein adsorption, contact angle, activated partial thromboplastin time (aPTT), and platelet adhesion. Hydraulic permeability of the synthesized PEI membranes were comparable to those of current high flux clinical membranes; values of diffusive permeability and rejection for typical solutes were similar to those reported in literature. The immobilization of heparin, in turn, resulted in more hydrophilic membranes, with insignificant protein adsorption and platelet adhesion (as opposed to actual clinical membranes), indicating anti-thrombogenic characteristics as confirmed by increased aPTT.
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Affiliation(s)
- Alana Melo Dos Santos
- Chemical Engineering Program-COPPE/UFRJ, Federal University of Rio de Janeiro, P.O. Box 68502, CEP 21941-972, Rio de Janeiro, RJ, Brazil.
| | - Alberto Claudio Habert
- Chemical Engineering Program-COPPE/UFRJ, Federal University of Rio de Janeiro, P.O. Box 68502, CEP 21941-972, Rio de Janeiro, RJ, Brazil
| | - Helen Conceição Ferraz
- Chemical Engineering Program-COPPE/UFRJ, Federal University of Rio de Janeiro, P.O. Box 68502, CEP 21941-972, Rio de Janeiro, RJ, Brazil
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21
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Yee DW, Schulz MD, Grubbs RH, Greer JR. Functionalized 3D Architected Materials via Thiol-Michael Addition and Two-Photon Lithography. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29:10.1002/adma.201605293. [PMID: 28218477 PMCID: PMC5529122 DOI: 10.1002/adma.201605293] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Revised: 12/22/2016] [Indexed: 05/26/2023]
Abstract
Fabrication of functionalized 3D architected materials is achieved by a facile method using functionalized acrylates synthesized via thiol-Michael addition, which are then polymerized using two-photon lithography. A wide variety of functional groups can be attached, from Boc-protected amines to fluoroalkanes. Modification of surface wetting properties and conjugation with fluorescent tags are demonstrated to highlight the potential applications of this technique.
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Affiliation(s)
- Daryl W Yee
- Division of Engineering and Applied Science, California Institute of Technology, CA, 91125, USA
| | - Michael D Schulz
- Division of Chemistry and Chemical Engineering, California Institute of Technology, CA, 91125, USA
| | - Robert H Grubbs
- Division of Chemistry and Chemical Engineering, California Institute of Technology, CA, 91125, USA
| | - Julia R Greer
- Division of Engineering and Applied Science, California Institute of Technology, CA, 91125, USA
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22
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Lieu Le N, Quilitzsch M, Cheng H, Hong PY, Ulbricht M, Nunes SP, Chung TS. Hollow fiber membrane lumen modified by polyzwitterionic grafting. J Memb Sci 2017. [DOI: 10.1016/j.memsci.2016.08.038] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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23
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Koppes RA, Park S, Hood T, Jia X, Abdolrahim Poorheravi N, Achyuta AH, Fink Y, Anikeeva P. Thermally drawn fibers as nerve guidance scaffolds. Biomaterials 2015; 81:27-35. [PMID: 26717246 DOI: 10.1016/j.biomaterials.2015.11.063] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2015] [Revised: 11/25/2015] [Accepted: 11/29/2015] [Indexed: 01/08/2023]
Abstract
Synthetic neural scaffolds hold promise to eventually replace nerve autografts for tissue repair following peripheral nerve injury. Despite substantial evidence for the influence of scaffold geometry and dimensions on the rate of axonal growth, systematic evaluation of these parameters remains a challenge due to limitations in materials processing. We have employed fiber drawing to engineer a wide spectrum of polymer-based neural scaffolds with varied geometries and core sizes. Using isolated whole dorsal root ganglia as an in vitro model system we have identified key features enhancing nerve growth within these fiber scaffolds. Our approach enabled straightforward integration of microscopic topography at the scale of nerve fascicles within the scaffold cores, which led to accelerated Schwann cell migration, as well as neurite growth and alignment. Our findings indicate that fiber drawing provides a scalable and versatile strategy for producing nerve guidance channels capable of controlling direction and accelerating the rate of axonal growth.
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Affiliation(s)
- Ryan A Koppes
- Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA; Department of Chemical Engineering, Northeastern University, Boston, MA 02115, USA
| | - Seongjun Park
- Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA; Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Tiffany Hood
- Department of Bioengineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Xiaoting Jia
- Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Negin Abdolrahim Poorheravi
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, United States
| | | | - Yoel Fink
- Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA; Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Polina Anikeeva
- Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA; Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
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24
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Haase T, Krost A, Sauter T, Kratz K, Peter J, Kamann S, Jung F, Lendlein A, Zohlnhöfer D, Rüder C. In vivo biocompatibility assessment of poly (ether imide) electrospun scaffolds. J Tissue Eng Regen Med 2015; 11:1034-1044. [PMID: 25712330 DOI: 10.1002/term.2002] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2014] [Revised: 11/25/2014] [Accepted: 12/17/2014] [Indexed: 12/18/2022]
Abstract
Poly(ether imide) (PEI), which can be chemically functionalized with biologically active ligands, has emerged as a potential biomaterial for medical implants. Electrospun PEI scaffolds have shown advantageous properties, such as enhanced endothelial cell adherence, proliferation and low platelet adhesion in in vitro experiments. In this study, the in vivo behaviour of electrospun PEI scaffolds and PEI films was examined in a murine subcutaneous implantation model. Electrospun PEI scaffolds and films were surgically implanted subcutaneously in the dorsae of mice. The surrounding subcutaneous tissue response was examined via histopathological examination at 7 and 28 days after implantation. No serious adverse events were observed for both types of PEI implants. The presence of macrophages or foreign body giant cells in the vicinity of the implants and the formation of a fibrous capsule indicated a normal foreign body reaction towards PEI films and scaffolds. Capsule thickness and inflammatory infiltration cells significantly decreased for PEI scaffolds during days 7-28 while remaining unchanged for PEI films. The infiltration of cells into the implant was observed for PEI scaffolds 7 days after implantation and remained stable until 28 days of implantation. Additionally some, but not all, PEI scaffold implants induced the formation of functional blood vessels in the vicinity of the implants. Conclusively, this study demonstrates the in vivo biocompatibility of PEI implants, with favourable properties of electrospun PEI scaffolds regarding tissue integration and wound healing. Copyright © 2015 John Wiley & Sons, Ltd.
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Affiliation(s)
- Tobias Haase
- Berlin-Brandenburg Centre for Regenerative Therapies, Berlin, Germany.,Department of Cardiology, Campus Virchow Klinikum, Charité, Berlin, Germany
| | - Annalena Krost
- Berlin-Brandenburg Centre for Regenerative Therapies, Berlin, Germany
| | - Tilman Sauter
- Berlin-Brandenburg Centre for Regenerative Therapies, Berlin, Germany.,Institute of Biomaterial Science, Helmholtz-Zentrum Geesthacht, Teltow, Germany.,Institute of Biochemistry and Biology, University of Potsdam, Germany
| | - Karl Kratz
- Berlin-Brandenburg Centre for Regenerative Therapies, Berlin, Germany.,Institute of Biomaterial Science, Helmholtz-Zentrum Geesthacht, Teltow, Germany
| | - Jan Peter
- Berlin-Brandenburg Centre for Regenerative Therapies, Berlin, Germany
| | - Stefanie Kamann
- Berlin-Brandenburg Centre for Regenerative Therapies, Berlin, Germany.,Department of Cardiology, Campus Virchow Klinikum, Charité, Berlin, Germany
| | - Friedrich Jung
- Berlin-Brandenburg Centre for Regenerative Therapies, Berlin, Germany.,Institute of Biomaterial Science, Helmholtz-Zentrum Geesthacht, Teltow, Germany
| | - Andreas Lendlein
- Berlin-Brandenburg Centre for Regenerative Therapies, Berlin, Germany.,Institute of Biomaterial Science, Helmholtz-Zentrum Geesthacht, Teltow, Germany.,Institute of Biochemistry and Biology, University of Potsdam, Germany
| | - Dietlind Zohlnhöfer
- Berlin-Brandenburg Centre for Regenerative Therapies, Berlin, Germany.,Department of Cardiology, Campus Virchow Klinikum, Charité, Berlin, Germany
| | - Constantin Rüder
- Berlin-Brandenburg Centre for Regenerative Therapies, Berlin, Germany.,Department of Cardiology, Campus Virchow Klinikum, Charité, Berlin, Germany
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25
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Local and segmental motion in highly transparent and low-k poly(ether-imide) films. JOURNAL OF POLYMER RESEARCH 2014. [DOI: 10.1007/s10965-014-0639-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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26
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Jalal TA, Charry Prada ID, Tayouo R, Giannelis EP, Nunes SP. Reactive phase inversion for manufacture of asymmetric poly (ether imide sulfone) membranes. REACT FUNCT POLYM 2014. [DOI: 10.1016/j.reactfunctpolym.2014.09.018] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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27
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Wei Q, Becherer T, Angioletti-Uberti S, Dzubiella J, Wischke C, Neffe AT, Lendlein A, Ballauff M, Haag R. Protein Interactions with Polymer Coatings and Biomaterials. Angew Chem Int Ed Engl 2014; 53:8004-31. [DOI: 10.1002/anie.201400546] [Citation(s) in RCA: 524] [Impact Index Per Article: 52.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2014] [Indexed: 01/07/2023]
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28
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Wei Q, Becherer T, Angioletti-Uberti S, Dzubiella J, Wischke C, Neffe AT, Lendlein A, Ballauff M, Haag R. Wechselwirkungen von Proteinen mit Polymerbeschichtungen und Biomaterialien. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201400546] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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29
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Weigel T, Schinkel G, Lendlein A. Design and preparation of polymeric scaffolds for tissue engineering. Expert Rev Med Devices 2014; 3:835-51. [PMID: 17280547 DOI: 10.1586/17434440.3.6.835] [Citation(s) in RCA: 127] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Polymeric scaffolds for tissue engineering can be prepared with a multitude of different techniques. Many diverse approaches have recently been under development. The adaptation of conventional preparation methods, such as electrospinning, induced phase separation of polymer solutions or porogen leaching, which were developed originally for other research areas, are described. In addition, the utilization of novel fabrication techniques, such as rapid prototyping or solid free-form procedures, with their many different methods to generate or to embody scaffold structures or the usage of self-assembly systems that mimic the properties of the extracellular matrix are also described. These methods are reviewed and evaluated with specific regard to their utility in the area of tissue engineering.
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Affiliation(s)
- Thomas Weigel
- Department of Polymer Technology, Institute of Polymer Research, GKSS Research Center Geesthacht, Kantstr 55, D-14513 Teltow, Germany.
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30
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Neffe AT, von Ruesten-Lange M, Braune S, Lützow K, Roch T, Richau K, Krüger A, Becherer T, Thünemann AF, Jung F, Haag R, Lendlein A. Multivalent grafting of hyperbranched oligo- and polyglycerols shielding rough membranes to mediate hemocompatibility. J Mater Chem B 2014; 2:3626-3635. [DOI: 10.1039/c4tb00184b] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Multivalent attachment of branched polyethers is a successful strategy in shielding rough surfaces, different from rules established on flat model surfaces.
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Affiliation(s)
- Axel T. Neffe
- Institute of Biomaterial Science and Berlin-Brandenburg Center for Regenerative Therapies
- 14513 Teltow, Germany
- Institute of Chemistry
- University of Potsdam
- Germany
| | - Maik von Ruesten-Lange
- Institute of Biomaterial Science and Berlin-Brandenburg Center for Regenerative Therapies
- 14513 Teltow, Germany
- Institute of Chemistry
- University of Potsdam
- Germany
| | - Steffen Braune
- Institute of Biomaterial Science and Berlin-Brandenburg Center for Regenerative Therapies
- 14513 Teltow, Germany
- Institute of Chemistry
- University of Potsdam
- Germany
| | - Karola Lützow
- Institute of Biomaterial Science and Berlin-Brandenburg Center for Regenerative Therapies
- 14513 Teltow, Germany
- Helmholtz Virtual Institute – Multifunctional Biomaterials for Medicine
- Teltow and Berlin, Germany
| | - Toralf Roch
- Institute of Biomaterial Science and Berlin-Brandenburg Center for Regenerative Therapies
- 14513 Teltow, Germany
- Helmholtz Virtual Institute – Multifunctional Biomaterials for Medicine
- Teltow and Berlin, Germany
| | - Klaus Richau
- Institute of Biomaterial Science and Berlin-Brandenburg Center for Regenerative Therapies
- 14513 Teltow, Germany
| | - Anne Krüger
- Institute of Biomaterial Science and Berlin-Brandenburg Center for Regenerative Therapies
- 14513 Teltow, Germany
| | - Tobias Becherer
- Helmholtz Virtual Institute – Multifunctional Biomaterials for Medicine
- Teltow and Berlin, Germany
- Institute of Chemistry and Biochemistry
- Freie Universität Berlin
- Germany
| | | | - Friedrich Jung
- Institute of Biomaterial Science and Berlin-Brandenburg Center for Regenerative Therapies
- 14513 Teltow, Germany
- Helmholtz Virtual Institute – Multifunctional Biomaterials for Medicine
- Teltow and Berlin, Germany
| | - Rainer Haag
- Helmholtz Virtual Institute – Multifunctional Biomaterials for Medicine
- Teltow and Berlin, Germany
- Institute of Chemistry and Biochemistry
- Freie Universität Berlin
- Germany
| | - Andreas Lendlein
- Institute of Biomaterial Science and Berlin-Brandenburg Center for Regenerative Therapies
- 14513 Teltow, Germany
- Institute of Chemistry
- University of Potsdam
- Germany
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31
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Hebbar RS, Isloor AM, Ismail AF. Preparation of antifouling polyetherimide/hydrolysed PIAM blend nanofiltration membranes for salt rejection applications. RSC Adv 2014. [DOI: 10.1039/c4ra05791k] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Polyetherimide/hydrolysed PIAM blend NF membranes have been prepared and characterized. The PEI/hydrolysed PIAM composition of 80 : 20 showed very good salt rejection (sodium sulphate) up to 76% with a pure water flux of 11.8 L m−2 h−1. This study provides a simple and effective approach to produce negatively charged NF membranes for water desalination applications with low energy consumption.
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Affiliation(s)
- Raghavendra S. Hebbar
- Membrane Technology Laboratory
- Chemistry Department
- National Institute of Technology Karnataka
- Mangalore 575 025, India
| | - Arun M. Isloor
- Membrane Technology Laboratory
- Chemistry Department
- National Institute of Technology Karnataka
- Mangalore 575 025, India
| | - A. F. Ismail
- Advanced Membrane Technology Research Center (AMTEC)
- UniversitiTeknologi Malaysia
- 81310 Skudai, Malaysia
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32
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Jo C, Pugal D, Oh IK, Kim KJ, Asaka K. Recent advances in ionic polymer–metal composite actuators and their modeling and applications. Prog Polym Sci 2013. [DOI: 10.1016/j.progpolymsci.2013.04.003] [Citation(s) in RCA: 305] [Impact Index Per Article: 27.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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33
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Kim SB, Jo JH, Lee SM, Kim HE, Shin KH, Koh YH. Use of a poly(ether imide) coating to improve corrosion resistance and biocompatibility of magnesium (Mg) implant for orthopedic applications. J Biomed Mater Res A 2012. [PMID: 23184807 DOI: 10.1002/jbm.a.34474] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
This study investigated the utility of poly(ether imide) (PEI) coating for improving the corrosion resistance and biocompatibility of magnesium (Mg) implants for orthopedic application. In particular, the microstructure of the PEI coating layers was controlled by the adjustment of the temperature used to dry the spin-coated wet PEI films. When a wet PEI film was dried at 4°C, a relatively thick and porous coating layer was achieved as a result of an extensive exchange of the solvent with water in a moist environment. In contrast, when a wet PEI film was dried at 70°C, a relatively thin and dense layer was created due to the faster evaporation of the solvent with a negligible exchange of the solvent with water. The porous PEI coating layer showed higher stability than did the dense one when immersed in a simulated body fluid (SBF), which was presumably attributed to the formation of chemical bonding between the PEI and the Mg substrate. Both the porous and the dense PEI coated Mg specimens showed significantly improved in vitro biocompatibility, which were assessed in terms of cell attachment, proliferation and differentiation. However, interestingly, the dense PEI coating layer showed greater cell proliferation and differentiation than did the porous layer. .
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Affiliation(s)
- Sang-Bok Kim
- Department of Materials Science and Engineering, WCU Hybrid Materials Program, Seoul National University, Seoul 151-744, Korea
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34
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Lange M, Braune S, Luetzow K, Richau K, Scharnagl N, Weinhart M, Neffe AT, Jung F, Haag R, Lendlein A. Surface Functionalization of Poly(ether imide) Membranes with Linear, Methylated Oligoglycerols for Reducing Thrombogenicity. Macromol Rapid Commun 2012; 33:1487-92. [DOI: 10.1002/marc.201200426] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2012] [Indexed: 11/11/2022]
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35
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Senthilkumar S, Rajesh S, Jayalakshmi A, Aishwarya G, Raju Mohan D. Preparation and performance evaluation of poly (ether-imide) incorporated polysulfone hemodialysis membranes. JOURNAL OF POLYMER RESEARCH 2012. [DOI: 10.1007/s10965-012-9867-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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36
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Tzoneva R, Seifert B, Albrecht W, Richau K, Lendlein A, Groth T. Poly(ether imide) membranes: studies on the effect of surface modification and protein pre-adsorption on endothelial cell adhesion, growth and function. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2012; 19:837-52. [DOI: 10.1163/156856208784613523] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- R. Tzoneva
- a Institute of Biophysics, Bulgarian Academy of Sciences, Acad. G. Bonchev Street, Bl. 108, Sofia 1113, Bulgaria
| | - B. Seifert
- b Institute of Polymer Research, GKSS Research Centre, Kantstrasse 55, Teltow 14513, Germany
| | - W. Albrecht
- c Institute of Polymer Research, GKSS Research Centre, Kantstrasse 55, Teltow 14513, Germany
| | - K. Richau
- d Institute of Polymer Research, GKSS Research Centre, Kantstrasse 55, Teltow 14513, Germany
| | - A. Lendlein
- e Institute of Polymer Research, GKSS Research Centre, Kantstrasse 55, Teltow 14513, Germany
| | - T. Groth
- f Biomedical Materials Group, Department of Pharmaceutics and Biopharmaceutics, Institute of Pharmacy, Martin Luther University, Halle-Wittenberg, Kurt-Mothes-Strasse 1, 06120 Halle/Saale, Germany
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37
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Altankov G, Albrecht W, Richau K, Groth T, Lendlein A. On the tissue compatibility of poly(ether imide) membranes: an in vitro study on their interaction with human dermal fibroblasts and keratinocytes. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2012; 16:23-42. [PMID: 15796303 DOI: 10.1163/1568562052843320] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Recently we have developed a novel type of membrane based on poly(ether imide) (PEI) which is considered for biomedical application. To improve its physical and biological performance it was modified by blending with poly(benzimidazole) (PBI). In the present study both membranes were characterized in terms of their physicochemical properties and in vitro tissue compatibility using human dermal fibroblasts and keratinocytes. The modified membrane (PEI*) was more hydrophilic, less porous and had an increased surface (zeta) potential. We further found that blending with PBI tends to promote cell contact, at least initially, as indicated by the improved overall cell morphology, adhesion and spreading of fibroblasts, and the development of focal adhesion complexes. The effects of fibronectin (FN) and serum coating were also beneficial when compared to pure PEI and tissue culture polystyrene (TCP), which correlates to a higher adsorption of both FN and vitronectin detected by ELISA. However, a clear tendency for homotypic cellular interaction particularly of keratinocytes was obtained in contact with membranes, which was much stronger pronounced on PEI*. Although the initial adhesion was greater on PEI*, a surprising decrease in cell growth was observed at later stages of incubation, which may be explained with the membrane-promoted cellular aggregation leading to an easier detachment from the substratum. Thus, membranes based on blends of PEI with PBI could provide a tissue compatible scaffold with lowered adhesive properties, which might be a useful tool for the transfer of cells, for example, to in vitro engineered tissue constructs.
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Affiliation(s)
- G Altankov
- GKSS Research Center, Institute of Chemistry, Kantstrasse 55, D-14513 Teltow, Germany
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38
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Sinikovic B, Schumann P, Winkler M, Kuestermeyer J, Tavassol F, von See C, Carvalho C, Mülhaupt R, Bormann KH, Kokemueller H, Meyer-Lindenberg A, Laschke MW, Menger MD, Gellrich NC, Rücker M. Calvaria bone chamber--a new model for intravital assessment of osseous angiogenesis. J Biomed Mater Res A 2011; 99:151-7. [PMID: 21976439 DOI: 10.1002/jbm.a.32955] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2009] [Revised: 09/29/2009] [Accepted: 06/24/2010] [Indexed: 11/06/2022]
Abstract
The faith of tissue engineered bone replacing constructs depends on their early supply with oxygen and nutrients, and thus on a rapid vascularization. Although some models for direct observation of angiogenesis are described, none of them allows the observation of new vessel formation in desmal bone. Therefore, we developed a new chamber model suitable for quantitative in vivo assessment of the vascularization of bone substitutes by intravital fluorescence microscopy. In the parietal calvaria of 32 balb/c mice a critical size defect was set. Porous 3D-poly(L-lactide-co-glycolide) (PLGA)-blocks were inserted into 16 osseous defects (groups 3 and 4) while other 16 osseous defects remained unequipped (groups 1 and 2). By placing a polyethylene membrane onto the dura mater, the angiogenesis was mainly restricted to the osseous margins (groups 2 and 4). Microvascular density, angiogenesis, and microcirculatory parameters were evaluated repetitively during 22 days. In all animals, only a mild inflammatory reaction was observed with a climax after 2 weeks. The implantation of PLGA scaffolds resulted in a vascular growth directed towards the center of the defect as demonstrated by the significantly (p < 0.05) enhanced central microvascular densitiy from day 3 to day 22 when compared with unequipped chambers. The additional application of polyethylene membrane was found to reduce significantly the microvessel density mainly in the center of both scaffolds and defects. The present calvaria bone chamber allows for the first time to assess quantitatively the angiogenesis arising from desmal bone directly in vivo. Therefore, this chronic model may support the future research in the biological adequacy of bone substitutes.
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Affiliation(s)
- Branko Sinikovic
- Department of Oral and Maxillofacial Surgery, Hannover Medical School, Hannover, Germany.
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39
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Rajagopalan M, Oh IK. Fullerenol-based electroactive artificial muscles utilizing biocompatible polyetherimide. ACS NANO 2011; 5:2248-2256. [PMID: 21332175 DOI: 10.1021/nn103521g] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Two essential functional requirements for electroactive artificial muscles, which can be used for biomedical active devices, are biocompatibility and sufficient range of motion. Fullerenol nanoparticles and their derivatives have been validated as potential candidates to be used for nanobiomaterials and biomedical applications because of their excellent proton conductivity, hydrophilicity, and biocompatibility. We developed fullerenol-based electroactive artificial muscles utilizing biocompatible polyetherimide. By using a solvent recasting method, present ionic networking membranes have been successfully synthesized with homogeneous dispersion of polyhydroxylated fullerene (PHF) nanoparticles into a sulfonated polyetherimide (SPEI) matrix. In comparison with pure SPEI membranes, the PHF-SPEI nanocomposite membranes show much higher water uptake and proton conductivity, which are both essential characteristics for high-performance ionic polymer actuators. The developed PHF-SPEI actuator shows over three times larger motion ranges and two times higher blocking forces than the pure SPEI actuator. The excellent biocompatibility of PHF and SPEI makes these actuators promising candidate materials for biomedical devices such as active stents and catheters.
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Affiliation(s)
- Mahendran Rajagopalan
- Division of Ocean Systems Engineering, School of Mechanical, Aerospace and Systems Engineering, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Republic of Korea
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Hiebl B, Lützow K, Lange M, Jung F, Seifert B, Klein F, Weigel T, Kratz K, Lendlein A. Cytocompatibility testing of cell culture modules fabricated from specific candidate biomaterials using injection molding. J Biotechnol 2010; 148:76-82. [DOI: 10.1016/j.jbiotec.2010.01.006] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2009] [Revised: 12/22/2009] [Accepted: 01/12/2010] [Indexed: 11/15/2022]
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Phase behavior of polyetherimide/benzophenone/triethylene glycol ternary system and its application for the preparation of microporous membranes. J Memb Sci 2010. [DOI: 10.1016/j.memsci.2010.02.061] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Chemical and Physical Modifications of Biomaterial Surfaces to Control Adhesion of Cells. ACTA ACUST UNITED AC 2010. [DOI: 10.1007/978-90-481-8790-4_13] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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D'Britto V, Tiwari S, Purohit V, Wadgaonkar PP, Bhoraskar SV, Bhonde RR, Prasad BLV. Composites of plasma treated poly(etherimide) films with gold nanoparticles and lysine through layer by layer assembly: a “friendly-rough” surface for cell adhesion and proliferation for tissue engineering applications. ACTA ACUST UNITED AC 2009. [DOI: 10.1039/b817231e] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Tzoneva R, Seifert B, Albrecht W, Richau K, Groth T, Lendlein A. Hemocompatibility of poly(ether imide) membranes functionalized with carboxylic groups. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2008; 19:3203-3210. [PMID: 18452029 DOI: 10.1007/s10856-008-3456-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2007] [Accepted: 04/16/2008] [Indexed: 05/26/2023]
Abstract
Materials for blood-contacting applications have to meet high requirements in terms to prevent thrombotic complications after the medical treatment. Surface induced thrombosis, e.g., after application of cardiovascular devices, is linked clearly to the activation of coagulation system and platelet adhesion and activation. The flat sheet poly(ether imide) membrane (PEI) was modified by binding of iminodiacetic acid (IDA) for different periods of time to obtain surfaces with carboxylic (-COOH) groups, namely PEI-1 (modified for 1 min) and PEI-2 (modified for 30 min). The successful binding of the ligands was monitored by thionin acetate assay. The physico-chemical characteristics of the materials were analyzed by SEM, AFM, water contact angle, and Zeta potential measurements. Hemocompatibility of the polymer materials was studied by analyzing the activation of coagulation system (plasma kallikrein-like activity) and platelet adhesion/activation by using immunofluorescence technique. The blood response to PEI membranes was compared to that of a commercial poly(ethylene terephthalate) (PET) membrane. Our results showed that the increase of the negative charges on the modified PEI membrane surfaces (number of -COOH groups) caused a higher contact activation of the coagulation system and a higher rate of platelet adhesion and activation compared to non-modified PEI. However, overall the hemocompatibility of all PEI membranes was higher than that of PET.
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Affiliation(s)
- R Tzoneva
- Institute of Biophysics, Bulgarian Academy of Sciences, Acad. G. Bonchev St., Bl. 108, Sofia 1113, Bulgaria.
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Zhang S, Xia L, Kang CH, Xiao G, Ong SM, Toh YC, Leo HL, van Noort D, Kan SH, Tang HH, Yu H. Microfabricated silicon nitride membranes for hepatocyte sandwich culture. Biomaterials 2008; 29:3993-4002. [DOI: 10.1016/j.biomaterials.2008.06.024] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2008] [Accepted: 06/21/2008] [Indexed: 11/30/2022]
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Hagenmüller H, Hofmann S, Kohler T, Merkle HP, Kaplan DL, Vunjak-Novakovic G, Müller R, Meinel L. Non-invasive time-lapsed monitoring and quantification of engineered bone-like tissue. Ann Biomed Eng 2007; 35:1657-67. [PMID: 17546503 DOI: 10.1007/s10439-007-9338-2] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2006] [Accepted: 05/23/2007] [Indexed: 10/23/2022]
Abstract
The formation of bone-like tissue from human mesenchymal stem cells (hMSC) cultured in osteogenic medium on silk fibroin scaffolds was monitored and quantified over 44 days in culture using non-invasive time-lapsed micro-computed tomography (microCT). Each construct was imaged nine times in situ. From microCT imaging, detailed morphometrical data on bone volume density, surface-to-volume ratio, trabecular thickness, trabecular spacing, and the structure model index and tissue mineral density were obtained. microCT irradiation did not impact the osteogenic performance of hMSCs based on DNA content, alkaline phosphatase activity, and calcium deposition when compared to non-exposed control samples. Bone-like tissue formation initiated at day 10 of the culture with the deposition of small mineralized clusters. Tissue mineral density increased linearly over time. The surface-to-volume ratio of the bone-like tissues converged asymptotically to 26 mm(-1). Although in vitro formation of bone-like tissue started from clusters, the overall bone volume was not predictable from the time, number, and size of initially formed bone-like clusters. Based on microstructural analysis, the morphometry of the tissue-engineered constructs was found to be in the range of human trabecular bone. In future studies, non-invasive, time-lapsed monitoring may enable researchers to culture tissues in vitro, right until the development of a desired morphology is accomplished. Our data demonstrate the feasibility of qualitatively and quantitatively detailing the spatial and temporal mineralization of bone-like tissue formation in tissue engineering.
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Albrecht W, Schauer J, Weigel T, Richau K, Groth T, Lendlein A. Modification of poly(ether imide) membranes with brominated polyvinylpyrrolidone. J Memb Sci 2007. [DOI: 10.1016/j.memsci.2006.12.014] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Lützow K, Weigel T, Lendlein A. Poly(ether imide) scaffolds as multifunctional materials for potential applications in regenerative medicine. Artif Organs 2007; 30:764-9. [PMID: 17026575 DOI: 10.1111/j.1525-1594.2006.00298.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
This article gives an overview of scaffolds that can be prepared from poly(ether imide) (PEI). These scaffolds were developed for extracorporeal blood detoxification processes in which specific compounds from blood or plasma are removed selectively. Both the preparation of porous microparticles and the preparation of hollow fibers are described. Commercially available particulate support materials have the disadvantage of a low accessibility of the internal pore system, a poor flow-through behavior and low adsorption specificity. Thus, novel support materials with optimally adapted properties profiles are needed. The second part of this article shows some recently developed highly asymmetric PEI hollow fibers. PEI scaffolds can be considered multifunctional because they combine separation characteristics, biocompatibility, sufficient biostability, and the possibility of creating tailor-made biofunctional surfaces.
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Affiliation(s)
- Karola Lützow
- GKSS Research Center GmbH, Institute of Polymer Research, Teltow, Germany
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Choi HM. Fluoroquinolon-type antibiotic treatment of PAN and cationic-dyeable PET fibers for infection resistant materials. J Appl Polym Sci 2007. [DOI: 10.1002/app.26361] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Polyetherimide membrane formation by the cononsolvent system and its biocompatibility of MG63 cell line. J Memb Sci 2006. [DOI: 10.1016/j.memsci.2005.06.019] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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