151
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Zhang Y, Savva A, Wustoni S, Hama A, Maria IP, Giovannitti A, McCulloch I, Inal S. Visualizing the Solid–Liquid Interface of Conjugated Copolymer Films Using Fluorescent Liposomes. ACS APPLIED BIO MATERIALS 2018; 1:1348-1354. [DOI: 10.1021/acsabm.8b00323] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | | | | | | | - Iuliana P. Maria
- Department of Chemistry and Centre for Plastic Electronics, Imperial College London, London SW7 2AZ, U.K
| | - Alexander Giovannitti
- Department of Chemistry and Centre for Plastic Electronics, Imperial College London, London SW7 2AZ, U.K
| | - Iain McCulloch
- Department of Chemistry and Centre for Plastic Electronics, Imperial College London, London SW7 2AZ, U.K
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152
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Bishal AK, Sukotjo C, Jokisaari JR, Klie RF, Takoudis CG. Enhanced Bioactivity of Collagen Fiber Functionalized with Room Temperature Atomic Layer Deposited Titania. ACS APPLIED MATERIALS & INTERFACES 2018; 10:34443-34454. [PMID: 30212175 DOI: 10.1021/acsami.8b05857] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Surface modifications of a biomaterial like collagen are crucial in improving the surface properties and thus enhancing the functionality and performance of such a material for a variety of biomedical applications. In this study, a commercially available collagen membrane's surface was functionalized by depositing an ultrathin film of titania or titanium dioxide (TiO2) using a room temperature atomic layer deposition (ALD) process. A novel titanium precursor-oxidizer combination was used for this process in a custom-made ALD reactor. Surface characterizations revealed successful deposition of uniform, conformal TiO2 thin film on the collagen fibrillar surface, and consequently, the fibers became thicker making the membrane pores smaller. The in vitro bioactivity of the ALD-TiO2 thin film coated collagen was investigated for the first time using cell proliferation and a calcium phosphate mineralization assay. The TiO2-coated collagen demonstrated improved biocompatibility promoting higher growth and proliferation of human osteoblastic and mesenchymal stem cells when compared to that of noncoated collagen. A higher level of calcium phosphate or apatite formation was observed on ALD modified collagen surface as compared to that on noncoated collagen. Therefore, this novel material can be promising in bone tissue engineering applications.
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Affiliation(s)
- Arghya K Bishal
- Department of Bioengineering , University of Illinois at Chicago , Chicago , Illinois 60607 , United States
| | - Cortino Sukotjo
- Department of Bioengineering , University of Illinois at Chicago , Chicago , Illinois 60607 , United States
- Restorative Dentistry, College of Dentistry , University of Illinois at Chicago , Chicago , Illinois 60612 , United States
| | - Jacob R Jokisaari
- Department of Physics , University of Illinois at Chicago , Chicago , Illinois 60607 , United States
| | - Robert F Klie
- Department of Physics , University of Illinois at Chicago , Chicago , Illinois 60607 , United States
| | - Christos G Takoudis
- Department of Bioengineering , University of Illinois at Chicago , Chicago , Illinois 60607 , United States
- Department of Chemical Engineering , University of Illinois at Chicago , Chicago , Illinois 60607 , United States
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153
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Zhou C, Zhao J, Saem S, Gill U, Stöver HDH, Moran-Mirabal J. Self-Cross-Linking p(APM-co-AA) Microstructured Thin Films as Biomimetic Scaffolds. ACS APPLIED BIO MATERIALS 2018; 1:1512-1522. [DOI: 10.1021/acsabm.8b00424] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Christal Zhou
- Department of Chemistry and Chemical Biology, McMaster University, Hamilton, Ontario L8S 4M1, Canada
| | - Jing Zhao
- Department of Chemistry and Chemical Biology, McMaster University, Hamilton, Ontario L8S 4M1, Canada
| | - Sokunthearath Saem
- Department of Chemistry and Chemical Biology, McMaster University, Hamilton, Ontario L8S 4M1, Canada
| | - Urooj Gill
- Department of Chemistry and Chemical Biology, McMaster University, Hamilton, Ontario L8S 4M1, Canada
| | - Harald D. H. Stöver
- Department of Chemistry and Chemical Biology, McMaster University, Hamilton, Ontario L8S 4M1, Canada
| | - Jose Moran-Mirabal
- Department of Chemistry and Chemical Biology, McMaster University, Hamilton, Ontario L8S 4M1, Canada
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154
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Cho S, Jung M, Ju D, Lee YH, Cho K, Okabe S. Anammox biomass carrying efficiency of polyethylene non-woven sheets as a carrier material. ENVIRONMENTAL TECHNOLOGY 2018; 39:2503-2510. [PMID: 28720070 DOI: 10.1080/09593330.2017.1357760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Accepted: 07/15/2017] [Indexed: 06/07/2023]
Abstract
To access the effects of the surface modification and fabric structure of polyethylene (PE) non-woven fabric sheets on retaining the attachment efficiency of anammox biomass, three different non-woven sheets were prepared and inserted in an anammox reactor. The hydrophobic surface modification with 10% KMnO4 and gelatin did not improve the attachment efficiency of the anammox biomass on the surface of the PE non-woven fibers. Densely packed PE-755 having the highest specific surface area to volume ratio (SA/V) (755) retained 221.4 mg biomass per unit sheet, whereas PE-181 having the lowest SA/V (181) retained only 66.4 mg biomass per unit. Accordingly, the volumetric anammox activity of non-woven sheet PE-755 was the highest among the three PE non-woven sheets because of the strong positive relationship between the specific anammox activity and biomass amount (R = 0.835, P < .01). The specific surface area to volume ratio (cm2 cm-3) as well as the bulk density should be considered as important parameters for the selection of non-woven biocarriers for anammox biomass.
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Affiliation(s)
- Sunja Cho
- a Department of Microbiology , Pusan National University , Busan , Korea
| | | | | | - Young-Hee Lee
- c Department of Organic Material Science and Engineering , Pusan National University , Busan , Korea
| | - Kuk Cho
- d Department of Environmental Engineering , Pusan National University , Busan , Korea
| | - Satoshi Okabe
- e Division of Environmental Engineering, Faculty of Engineering , Hokkaido University , Hokkaido , Japan
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155
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Valverde C, Lligadas G, Ronda JC, Galià M, Cádiz V. Hydrolytic and enzymatic degradation studies of aliphatic 10-undecenoic acid-based polyesters. Polym Degrad Stab 2018. [DOI: 10.1016/j.polymdegradstab.2018.07.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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156
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Kamguyan K, Katbab AA, Mahmoudi M, Thormann E, Zajforoushan Moghaddam S, Moradi L, Bonakdar S. An engineered cell-imprinted substrate directs osteogenic differentiation in stem cells. Biomater Sci 2018; 6:189-199. [PMID: 29189838 DOI: 10.1039/c7bm00733g] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A cell-imprinted poly(dimethylsiloxane)/hydroxyapatite nanocomposite substrate was fabricated to engage topographical, mechanical, and chemical signals to stimulate and boost stem cell osteogenic differentiation. The physicochemical properties of the fabricated substrates, with nanoscale resolution of osteoblast morphology, were probed using a wide range of techniques including scanning electron microscopy, atomic force microscopy, dynamic mechanical thermal analysis, and water contact angle measurements. The osteogenic differentiation capacity of the cultured stem cells on these substrates was probed by alizarin red staining, ALP activity, osteocalcin measurements, and gene expression analysis. The outcomes revealed that the concurrent roles of the surface patterns and viscoelastic properties of the substrate provide the capability of directing stem cell differentiation toward osteogenic phenotypes. Besides the physical and mechanical effects, we found that the chemical signaling of osteoinductive hydroxyapatite nanoparticles, embedded in the nanocomposite substrates, could further improve and optimize stem cell osteogenic differentiation.
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Affiliation(s)
- Khorshid Kamguyan
- Department of Polymer Engineering and Colour Technology, Amirkabir University of Technology, Tehran, 1599637111, Iran.
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157
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Ponomarev VA, Sukhorukova IV, Sheveyko AN, Permyakova ES, Manakhov AM, Ignatov SG, Gloushankova NA, Zhitnyak IY, Lebedev OI, Polčak J, Kozmin AM, Shtansky DV. Antibacterial Performance of TiCaPCON Films Incorporated with Ag, Pt, and Zn: Bactericidal Ions Versus Surface Microgalvanic Interactions. ACS APPLIED MATERIALS & INTERFACES 2018; 10:24406-24420. [PMID: 29969237 DOI: 10.1021/acsami.8b06671] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
It is very important to prevent bacterial colonization at the early postoperative stages. There are four major strategies and their corresponding types of antibacterial surfaces specifically designed to fight infection: bactericide release, anti-adhesion, pH-sensitive, and contact-killing. Herein, we aimed at determining the antibacterial efficiency of different types of bactericidal ions and revealing the possible contribution of surface microgalvanic effects arising from a potential difference on heterogeneous surfaces. We considered five types of TiCaPCON films, with Ag, Zn, Pt, Ag + Zn, and Pt + Zn nanoparticles (NPs) on their surface. The Ag-modified film demonstrated a pronounced antibacterial effect at a very low Ag ion concentration of 0.11 ppb in physiological solution that was achieved already after 3 h of immersion in Escherichia coli ( E. coli) bacterial culture. The Zn-containing sample also showed a noticeable antibacterial effect against E. coli and Staphylococcus aureus ( S. aureus) strains, wherein the concentration of Zn ions was 2 orders of magnitude higher (15 ppb) compared with the Ag ions. The presence of Ag NPs accelerated the leaching of Zn ion out of the TiCaPCON-Ag-Zn film, but no synergistic effect of the simultaneous presence of the two bactericidal components was observed. After the incubation of the samples with Ag, Zn, and Ag + Zn NPs in E. coli and S. aureus suspensions for 24 and 8 h, respectively, all bacterial cells were completely inactivated. The Pt-containing film showed a very low Pt ion release, and therefore the contribution of this type of ions to the total bactericidal effect could be neglected. The results of the electrochemical studies and Kelvin probe force microscopy indicated that microgalvanic couples were formed between the Pt NPs and the TiCaPCON film, but no noticeable antibacterial effect against either E. coli or S. aureus strains was observed. All ion-modified samples provided good osteoblastic cell attachment, spreading, and proliferation and therefore were concluded to be nontoxic for cells. In addition, the TiCaPCON films with Ag, Pt, and Zn NPs on their surface demonstrated good osteoconductive characteristics.
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Affiliation(s)
- V A Ponomarev
- National University of Science and Technology "MISIS" , Leninsky prospect 4 , Moscow 119049 , Russia
| | - I V Sukhorukova
- National University of Science and Technology "MISIS" , Leninsky prospect 4 , Moscow 119049 , Russia
| | - A N Sheveyko
- National University of Science and Technology "MISIS" , Leninsky prospect 4 , Moscow 119049 , Russia
| | - E S Permyakova
- National University of Science and Technology "MISIS" , Leninsky prospect 4 , Moscow 119049 , Russia
| | - A M Manakhov
- National University of Science and Technology "MISIS" , Leninsky prospect 4 , Moscow 119049 , Russia
| | - S G Ignatov
- State Research Center for Applied Microbiology and Biotechnology , Obolensk , Moscow Region 142279 , Russia
| | - N A Gloushankova
- N.N. Blokhin National Medical Research Center of Oncology of Ministry of Health of Russia , Kashirskoe shosse 24 , Moscow 115478 , Russia
| | - I Y Zhitnyak
- N.N. Blokhin National Medical Research Center of Oncology of Ministry of Health of Russia , Kashirskoe shosse 24 , Moscow 115478 , Russia
| | - O I Lebedev
- CRISMAT, UMR 6508, CNRS-ENSICAEN , 6Bd Marechal Juin , 14050 Caen , France
| | - J Polčak
- Brno University of Technology , Technicka 2896/2 , 616 69 Brno , Czech Republic
- CEITEC-Brno University of Technology , Technická 3058/10 , 61600 Brno , Czech Republic
| | - A M Kozmin
- National Research University of Electronic Technology "MIET" , Shokin Square 1 , Zelenograd , Moscow Region 124498 , Russia
| | - D V Shtansky
- National University of Science and Technology "MISIS" , Leninsky prospect 4 , Moscow 119049 , Russia
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158
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Synthesis, characterization & cytocompatibility of poly (diol-co-tricarballylate) based thermally crosslinked elastomers for drug delivery & tissue engineering applications. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 93:254-264. [PMID: 30274057 DOI: 10.1016/j.msec.2018.07.028] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Revised: 05/20/2018] [Accepted: 07/11/2018] [Indexed: 11/24/2022]
Abstract
The aim of this study was to investigate the synthesis and in vitro characterization of thermoset biodegradable poly (diol-co-tricarballylate) (PDT) elastomeric polymers for the purpose of their use in implantable drug delivery and tissue engineering applications. The synthesis was based on thermal crosslinking technique via a polycondensation reaction of tricarballylic acid with aliphatic diols of varying chain lengths (C6-C12). PDT prepolymers were synthesized at 140 °C for 20 min. After purification, the prepolymers were molded and kept at 120 °C for 18 h under vacuum to complete the crosslinking process. PDT prepolymers were characterized by DSC, FT-IR, 1H NMR and GPC. The PDT elastomers were also subjected to thermal and structural analysis, as well as sol content, mechanical testing, in vitro degradation and cytocompatibility studies. The mechanical properties and sol content were found to be dependent on synthesis conditions and can be controlled by manipulating the crosslinking density and number of methylene groups in the chain of precursor aliphatic diol. The family of thermally crosslinked PDT biodegradable polyesters were successfully prepared and characterized; besides they have promising use in drug delivery and other biomedical tissue engineering applications.
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159
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Elucidating molecular events underlying topography mediated cardiomyogenesis of stem cells on 3D nanofibrous scaffolds. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 88:104-114. [DOI: 10.1016/j.msec.2018.03.012] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2017] [Revised: 01/27/2018] [Accepted: 03/14/2018] [Indexed: 12/28/2022]
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160
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Skrzypek K, Nibbelink MG, Karbaat LP, Karperien M, van Apeldoorn A, Stamatialis D. An important step towards a prevascularized islet macroencapsulation device-effect of micropatterned membranes on development of endothelial cell network. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2018; 29:91. [PMID: 29938334 PMCID: PMC6018599 DOI: 10.1007/s10856-018-6102-0] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Accepted: 06/05/2018] [Indexed: 05/23/2023]
Abstract
The development of immune protective islet encapsulation devices could allow for islet transplantation in the absence of immunosuppression. However, the immune protective membrane / barrier introduced there could also impose limitations in transport of oxygen and nutrients to the encapsulated cells resulting to limited islet viability. In the last years, it is well understood that achieving prevascularization of the device in vitro could facilitate its connection to the host vasculature after implantation, and therefore could provide sufficient blood supply and oxygenation to the encapsulated islets. However, the microvascular networks created in vitro need to mimic well the highly organized vasculature of the native tissue. In earlier study, we developed a functional macroencapsulation device consisting of two polyethersulfone/polyvinylpyrrolidone (PES/PVP) membranes, where a bottom microwell membrane provides good separation of encapsulated islets and the top flat membrane acts as a lid. In this work, we investigate the possibility of creating early microvascular networks on the lid of this device by combining novel membrane microfabrication with co-culture of human umbilical vein endothelial cell (HUVEC) and fibroblasts. We create thin porous microstructured PES/PVP membranes with solid and intermittent line-patterns and investigate the effect of cell alignment and cell interconnectivity as a first step towards the development of a stable prevascularized layer in vitro. Our results show that, in contrast to non-patterned membranes where HUVECs form unorganized HUVEC branch-like structures, for the micropatterned membranes, we can achieve cell alignment and the co-culture of HUVECs on a monolayer of fibroblasts attached on the membranes with intermittent line-pattern allows for the creation of HUVEC branch-like structures over the membrane surface. This important step towards creating early microvascular networks was achieved without the addition of hydrogels, often used in angiogenesis assays, as gels could block the pores of the membrane and limit the transport properties of the islet encapsulation device.
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Affiliation(s)
- Katarzyna Skrzypek
- Bioartificial organs, Biomaterials Science and Technology, MIRA Institute of Biomedical Technology and Technical Medicine, University of Twente, Enschede, The Netherlands.
| | - Milou Groot Nibbelink
- Developmental BioEngineering, MIRA Institute of Biomedical Technology and Technical Medicine, University of Twente, Enschede, The Netherlands
| | - Lisanne P Karbaat
- Developmental BioEngineering, MIRA Institute of Biomedical Technology and Technical Medicine, University of Twente, Enschede, The Netherlands
| | - Marcel Karperien
- Developmental BioEngineering, MIRA Institute of Biomedical Technology and Technical Medicine, University of Twente, Enschede, The Netherlands
| | - Aart van Apeldoorn
- Developmental BioEngineering, MIRA Institute of Biomedical Technology and Technical Medicine, University of Twente, Enschede, The Netherlands
- Complex Tissue Regeneration, MERLN Institute for Technology Inspired Regenerative Medicine, Maastricht University, Maastricht, The Netherlands
| | - Dimitrios Stamatialis
- Bioartificial organs, Biomaterials Science and Technology, MIRA Institute of Biomedical Technology and Technical Medicine, University of Twente, Enschede, The Netherlands
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161
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Areid N, Peltola A, Kangasniemi I, Ballo A, Närhi TO. Effect of ultraviolet light treatment on surface hydrophilicity and human gingival fibroblast response on nanostructured titanium surfaces. Clin Exp Dent Res 2018; 4:78-85. [PMID: 29955391 PMCID: PMC6010723 DOI: 10.1002/cre2.108] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Revised: 03/04/2018] [Accepted: 04/02/2018] [Indexed: 01/19/2023] Open
Abstract
This study was designed to investigate the effect of nanostructured TiO2 coatings on human gingival fibroblast and to explore the influence of ultraviolet (UV) light on surface wettability and cellular response. Ti-6Al-4V titanium alloy discs (n = 96) were divided into three groups: a sol-gel-derived MetAlive™ (MA) coating; hydrothermal (HT) coating; and a non-coated (NC) group. Forty-eight titanium substrates were further treated with UV light for 15 min. The water contact angles of the substrates were measured using the sessile drop method. Human gingival fibroblasts were used to evaluate the cell adhesion strength and cell proliferation on experimental surfaces. The strength of cell adhesion against enzymatic detachment was studied after 6 hr of adhesion using gentle trypsinization for 15 min at room temperature. A fluorescence microscope was used for cell imaging (Zeiss-stereo-lumar-v12), and images were analyzed for cell counting, and the percentage of detached cells were calculated. The proliferation of cultured cells up to 10 days was determined according to the cell activity using Alamar Blue™assay. The HT group had the lowest contact angle value (31.1°) followed by MetAlive™ (35.3°), whereas the NC group had the highest contact angle (50.3°). After UV light treatment, all surfaces become considerably more hydrophilic. There was a significant difference in the amount of adherent cells between sol-gel and HT groups when compared with the NC group (p < .05) with detachment percentages of 35.8%, 36.4%, and 70.7%, respectively. All substrate types showed an increase in cell proliferation rate until 10 days. It can be concluded that nanostructured titanium oxide implant surfaces, obtained by sol-gel and HT coating methods, enhance the surface wettability and improve human gingival fibroblast function in terms of adhesion and proliferation rate when compared with non-coated surfaces. UV light treatment clearly enhances the wettability of all titanium surfaces.
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Affiliation(s)
- Nagat Areid
- Department of Prosthetic Dentistry, Stomatognathic PhysiologyUniversity of TurkuTurkuFinland
| | - Ari Peltola
- Turku Clinical Biomaterials CentreUniversity of TurkuTurkuFinland
| | | | - Ahmed Ballo
- Division of Prosthodontics and Dental Geriatrics, Department of Oral Health Sciences, Faculty of DentistryUniversity of British ColumbiaBCCanada
| | - Timo O. Närhi
- Department of Prosthetic Dentistry, Stomatognathic PhysiologyUniversity of TurkuTurkuFinland
- Department of Oral and Maxillofacial DiseaseTurku University HospitalTurkuFinland
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162
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Li B, Gao Y, Guo L, Fan Y, Kawazoe N, Fan H, Zhang X, Chen G. Synthesis of photo-reactive poly (vinyl alcohol) and construction of scaffold-free cartilage like pellets in vitro. Regen Biomater 2018; 5:159-166. [PMID: 29942648 PMCID: PMC6007571 DOI: 10.1093/rb/rby009] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Revised: 04/04/2018] [Accepted: 04/11/2018] [Indexed: 12/24/2022] Open
Abstract
Photo-reactive poly(vinyl alcohol) (PRPVA) was synthesized by introduction of phenyl azido groups into poly(vinyl alcohol) (PVA) and applied for surface modification. PRPVA was grafted onto cell culture plate surface homogeneously or in a micropattern. Human mesenchymal stem cells (hMSCs) cultured on cell culture plate surface and PVA-modified surface showed different behaviors. Cells adhered and spread well on cell culture plate surface, while they did not adhere on PVA-grafted surface at all. When hMSCs were cultured on PVA-micropatterned surface, they formed a cell micropattern. Cells formed pellets after cultured on PVA homogeneously modified surface in chondrogenic induction medium for 2 weeks. The pellets were positively stained by hematoxylin/eosin, safranin-O/fast green and toluidin blue, and they were also stained brown by Type II collagen and proteoglycan immunohistological staining. Real-time PCR analysis was conducted to investigate the expression of colI, colII, colX, aggrecan and sox9 mRNA. Results of gene expression were in agreement with those of histological and immunohistological observations. These results indicated that hMSCs cultured on PVA-modified surface performed chondrogenic differentiation, and it was possible to construct scaffold-free cartilage like pellets with PVA-modified surface in vitro.
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Affiliation(s)
- Bao Li
- National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu, Sichuan 610064, China
| | - Yongli Gao
- National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu, Sichuan 610064, China
| | - Likun Guo
- National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu, Sichuan 610064, China.,Research Center for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Yujiang Fan
- National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu, Sichuan 610064, China
| | - Naoki Kawazoe
- Research Center for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Hongsong Fan
- National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu, Sichuan 610064, China
| | - Xingdong Zhang
- National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu, Sichuan 610064, China
| | - Guoping Chen
- Research Center for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
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163
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Sangsanoh P, Ekapakul N, Israsena N, Suwantong O, Supaphol P. Enhancement of biocompatibility on aligned electrospun poly(3-hydroxybutyrate) scaffold immobilized with laminin towards murine neuroblastoma Neuro2a cell line and rat brain-derived neural stem cells (mNSCs). POLYM ADVAN TECHNOL 2018. [DOI: 10.1002/pat.4313] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Pakakrong Sangsanoh
- Technological Center for Electrospun Fibers, The Petroleum and Petrochemical College; Chulalongkorn University; Phyathai Road, Pathumwan Bangkok 10330 Thailand
| | - Natjaya Ekapakul
- Technological Center for Electrospun Fibers, The Petroleum and Petrochemical College; Chulalongkorn University; Phyathai Road, Pathumwan Bangkok 10330 Thailand
| | - Nipan Israsena
- Department of Pharmacology, Faculty of Medicine; Chulalongkorn University; Phyathai Road, Pathumwan Bangkok 10330 Thailand
| | - Orawan Suwantong
- Center of Chemical Innovation for Sustainability (CIS); Mae Fah Luang University; Tasud, Muang Chiang Rai 57100 Thailand
- School of Science; Mae Fah Luang University; Tasud, Muang Chiang Rai 57100 Thailand
| | - Pitt Supaphol
- Technological Center for Electrospun Fibers, The Petroleum and Petrochemical College; Chulalongkorn University; Phyathai Road, Pathumwan Bangkok 10330 Thailand
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164
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Hoshiba T, Yoshikawa C, Sakakibara K. Characterization of Initial Cell Adhesion on Charged Polymer Substrates in Serum-Containing and Serum-Free Media. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:4043-4051. [PMID: 29544251 DOI: 10.1021/acs.langmuir.8b00233] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Charged substrates are expected to promote cell adhesion via electrostatic interaction, but it remains unclear how cells adhere to these substrates. Here, initial cell adhesion (<30 min) was re-examined on charged substrates in serum-containing and serum-free media to distinguish among various cell adhesion mechanisms (i.e., electrostatic interaction, hydrophobic interaction, and biological interaction). Cationic and anionic methacrylate copolymers were coated on nonionic nontissue culture-treated polystyrene to create charged substrates. Cells adhered similarly on cationic, anionic, and nonionic substrates in serum-free medium via integrin-independent mechanisms, but their adhesion forces differed (anionic > cationic > nonionic substrates), indicating that cell adhesion is not mediated solely by the cells' negative charge. In serum-containing medium, the cells adhered minimally on anionic and nonionic substrates, but they adhered abundantly on cationic substrates via both integrin-dependent and -independent mechanisms. These results suggest that neither electrostatic force nor protein adsorption is accountable for cell adhesion. Conclusively, the observed phenomena revealed a gap in the generally accepted understanding of cell adhesion mechanisms on charged polymeric substrates. A reanalysis of their mechanisms is necessary.
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Affiliation(s)
- Takashi Hoshiba
- International Center for Materials Nanoarchitechtonics , National Institute for Materials Science , 1-2-1 Sengen , Tsukuba , Ibaraki 305-0047 , Japan
| | - Chiaki Yoshikawa
- International Center for Materials Nanoarchitechtonics , National Institute for Materials Science , 1-2-1 Sengen , Tsukuba , Ibaraki 305-0047 , Japan
| | - Keita Sakakibara
- Institute for Chemical Research , Kyoto University , Gokasho, Uji, Kyoto 611-0011 , Japan
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165
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Das S, Gurav S, Soni V, Ingle A, Mohanty BS, Chaudhari P, Bendale K, Dholam K, Bellare JR. Osteogenic Nanofibrous Coated Titanium Implant Results in Enhanced Osseointegration: In Vivo Preliminary Study in a Rabbit Model. Tissue Eng Regen Med 2018; 15:231-247. [PMID: 30603550 PMCID: PMC6171690 DOI: 10.1007/s13770-017-0106-6] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Revised: 11/21/2017] [Accepted: 11/28/2017] [Indexed: 01/09/2023] Open
Abstract
A titanium implant surface when coated with biodegradable, highly porous, osteogenic nanofibrous coating has shown enhanced intrinsic osteoinductive and osteoconductive properties. This coating mimics extracellular matrix resulting in differentiation of stem cells present in the peri-implant niche to osteoblast and hence results in enhanced osseointegration of the implant. The osteogenic nanofibrous coating (ONFC) consists of poly-caprolactone, gelatin, nano-sized hydroxyapatite, dexamethasone, ascorbic acid and beta-glycerophosphate. ONFC exhibits optimum mechanical properties to support mesenchymal stem cells and steer their osteogenic differentiation. ONFC was subjected to various characterization tests like scanning electron microscopy, Fourier-transform infrared spectroscopy, x-ray diffractometry, thermal degradation, biomineralization, mechanical properties, wettability and proliferation assay. In pre-clinical animal trials, the coated implant showed enhanced new bone formation when placed in the tibia of rabbit. This novel approach toward implant bone integration holds significant promise for its easy and economical coating thus marking the beginning of new era of electrospun osteogenic nanofibrous coated bone implants.
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Affiliation(s)
- Siddhartha Das
- Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Mumbai, 400076 India
- Department of Chemical Engineering, Indian Institute of Technology Bombay, Mumbai, 400076 India
| | | | - Vivek Soni
- Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Mumbai, 400076 India
| | - Arvind Ingle
- Advanced Centre for Treatment, Research and Education in Cancer, Navi Mumbai, 410210 India
| | - Bhabani S. Mohanty
- Advanced Centre for Treatment, Research and Education in Cancer, Navi Mumbai, 410210 India
| | - Pradip Chaudhari
- Advanced Centre for Treatment, Research and Education in Cancer, Navi Mumbai, 410210 India
| | - Kiran Bendale
- Advanced Centre for Treatment, Research and Education in Cancer, Navi Mumbai, 410210 India
| | | | - Jayesh R. Bellare
- Department of Chemical Engineering, Indian Institute of Technology Bombay, Mumbai, 400076 India
- Wadhwani Research Centre for Bioengineering, Indian Institute of Technology Bombay, Mumbai, 400076 India
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166
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Kang YG, Wei J, Shin JW, Wu YR, Su J, Park YS, Shin JW. Enhanced biocompatibility and osteogenic potential of mesoporous magnesium silicate/polycaprolactone/wheat protein composite scaffolds. Int J Nanomedicine 2018; 13:1107-1117. [PMID: 29520139 PMCID: PMC5833793 DOI: 10.2147/ijn.s157921] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
BACKGROUND Successful bone tissue engineering using scaffolds is primarily dependent on the properties of the scaffold, including biocompatibility, highly interconnected porosity, and mechanical integrity. METHODS In this study, we propose new composite scaffolds consisting of mesoporous magnesium silicate (m_MS), polycaprolactone (PCL), and wheat protein (WP) manufactured by a rapid prototyping technique to provide a micro/macro porous structure. Experimental groups were set based on the component ratio: (1) WP0% (m_MS:PCL:WP =30:70:0 weight per weight; w/w); (2) WP15% (m_MS:PCL:WP =30:55:15 w/w); (3) WP30% (m_MS:PCL:WP =30:40:30 w/w). RESULTS Evaluation of the properties of fabricated scaffolds indicated that increasing the amount of WP improved the surface hydrophilicity and biodegradability of m_MS/PCL/WP composites, while reducing the mechanical strength. Moreover, experiments were performed to confirm the biocompatibility and osteogenic differentiation of human mesenchymal stem cells (MSCs) according to the component ratio of the scaffold. The results confirmed that the content of WP affects proliferation and osteogenic differentiation of MSCs. Based on the last day of the experiment, ie, the 14th day, the proliferation based on the amount of DNA was the best in the WP30% group, but all of the markers measured by PCR were the most expressed in the WP15% group. CONCLUSION These results suggest that the m_MS/PCL/WP composite is a promising candidate for use as a scaffold in cell-based bone regeneration.
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Affiliation(s)
- Yun Gyeong Kang
- School of Biomedical Engineering, Inje University, Gimhae, Republic of Korea
| | - Jie Wei
- Key Laboratory for Ultrafine Materials of Ministry of Education, East China University of Science and Technology, Shanghai, China
| | - Ji Won Shin
- School of Biomedical Engineering, Inje University, Gimhae, Republic of Korea
| | - Yan Ru Wu
- Department of Health Science and Technology, Inje University, Gimhae, Republic of Korea
| | - Jiacan Su
- Department of Orthopaedics, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Young Shik Park
- School of Biological Science, Inje University, Gimhae, Republic of Korea
| | - Jung-Woog Shin
- School of Biomedical Engineering, Inje University, Gimhae, Republic of Korea
- Department of Health Science and Technology, Inje University, Gimhae, Republic of Korea
- Cardiovascular and Metabolic Disease Center/Institute of Aged Life Redesign/UHARC, Inje University, Gimhae, Republic of Korea
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167
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Panico A, Paladini F, Pollini M. Development of regenerative and flexible fibroin‐based wound dressings. J Biomed Mater Res B Appl Biomater 2018; 107:7-18. [DOI: 10.1002/jbm.b.34090] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Revised: 12/12/2017] [Accepted: 01/28/2018] [Indexed: 12/16/2022]
Affiliation(s)
- Angelica Panico
- Department of Engineering for InnovationUniversity of SalentoLecce Italy
| | - Federica Paladini
- Department of Engineering for InnovationUniversity of SalentoLecce Italy
- Caresilk S.r.l.s., Via Monteroni c/o Technological District DHITECHLecce, Italy
- CNR NANOTEC‐Institute of Nanotechnology c/o Campus EcotekneLecce Italy
| | - Mauro Pollini
- Department of Engineering for InnovationUniversity of SalentoLecce Italy
- Caresilk S.r.l.s., Via Monteroni c/o Technological District DHITECHLecce, Italy
- CNR NANOTEC‐Institute of Nanotechnology c/o Campus EcotekneLecce Italy
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168
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Preparation of Porous Polylactide Microspheres and Their Application in Tissue Engineering. CHINESE JOURNAL OF POLYMER SCIENCE 2018. [DOI: 10.1007/s10118-018-2079-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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169
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Stříteský S, Marková A, Víteček J, Šafaříková E, Hrabal M, Kubáč L, Kubala L, Weiter M, Vala M. Printing inks of electroactive polymer PEDOT:PSS: The study of biocompatibility, stability, and electrical properties. J Biomed Mater Res A 2018; 106:1121-1128. [PMID: 29274101 DOI: 10.1002/jbm.a.36314] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Revised: 12/05/2017] [Accepted: 12/15/2017] [Indexed: 12/12/2022]
Abstract
Biocompatibility tests and a study of the electrical properties of thin films prepared from six electroactive polymer ink formulations based on poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) were performed. The aim was to find a suitable formulation of PEDOT:PSS and conditions for preparing thin films in order to construct printed bioelectronic devices for biomedical applications. The stability and electrical properties of such films were tested on organic electrochemical transistor (OECT)-based sensor platforms and their biocompatibility was evaluated in assays with 3T3 fibroblasts and murine cardiomyocytes. It was found that the thin films prepared from inks without an additive or any thin film post-treatment provide limited conductivity and stability for use in biomedical applications. These properties were greatly improved by using ethylene glycol and thermal annealing. Addition or post-treatment by ethylene glycol in combination with thermal annealing provided thin films with electrical resistance and a stability sufficient to be used in sensing of animal cell physiology. These films coated with collagen IV showed good biocompatibility in the assay with 3T3 fibroblasts when compared to standard cell culture plastics. Selected films were then used in assays with murine cardiomyocytes. We observed that these cells were able to attach to the PEDOT:PSS films and form an active sensor element. Spontaneously beating clusters were formed, indicating a good physiological status for the cardiomyocyte cells. These results open the door to construction of cheap printed electronic devices for biointerfacing in biomedical applications. © 2018 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 106A: 1121-1128, 2018.
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Affiliation(s)
- Stanislav Stříteský
- Materials Research Centre, Faculty of Chemistry, Brno University of Technology, Purkyňova 118, Brno, 612 00, Czech Republic
| | - Aneta Marková
- Materials Research Centre, Faculty of Chemistry, Brno University of Technology, Purkyňova 118, Brno, 612 00, Czech Republic
| | - Jan Víteček
- Institute of Biophysics of the Czech Academy of Sciences, Královopolská 135, Brno, 612 65, Czech Republic.,International Clinical Research Center-Center of Biomolecular and Cell Engineering, St. Anne's University Hospital Brno, Pekařská 53, Brno, 656 91, Czech Republic
| | - Eva Šafaříková
- Institute of Biophysics of the Czech Academy of Sciences, Královopolská 135, Brno, 612 65, Czech Republic.,Department of Experimental Biology, Faculty of Science, Masaryk University, University Campus Bohunice, Kamenice 5, Brno, 625 00, Czech Republic
| | - Michal Hrabal
- Materials Research Centre, Faculty of Chemistry, Brno University of Technology, Purkyňova 118, Brno, 612 00, Czech Republic
| | - Lubomír Kubáč
- Centrum Organické Chemie, Rybitví 296, Rybitví, 533 54, Czech Republic
| | - Lukáš Kubala
- Institute of Biophysics of the Czech Academy of Sciences, Královopolská 135, Brno, 612 65, Czech Republic.,International Clinical Research Center-Center of Biomolecular and Cell Engineering, St. Anne's University Hospital Brno, Pekařská 53, Brno, 656 91, Czech Republic
| | - Martin Weiter
- Materials Research Centre, Faculty of Chemistry, Brno University of Technology, Purkyňova 118, Brno, 612 00, Czech Republic
| | - Martin Vala
- Materials Research Centre, Faculty of Chemistry, Brno University of Technology, Purkyňova 118, Brno, 612 00, Czech Republic
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170
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Calejo MT, Ilmarinen T, Skottman H, Kellomäki M. Breath figures in tissue engineering and drug delivery: State-of-the-art and future perspectives. Acta Biomater 2018; 66:44-66. [PMID: 29183847 DOI: 10.1016/j.actbio.2017.11.043] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Revised: 11/09/2017] [Accepted: 11/22/2017] [Indexed: 12/11/2022]
Abstract
The breath figure (BF) method is an easy, low-cost method to prepare films with a highly organized honeycomb-like porous surface. The particular surface topography and porous nature of these materials makes them valuable substrates for studying the complex effects of topography on cell fate, and to produce biomimetic materials with high performance in tissue engineering. Numerous researchers over the last two decades have studied the effects of the honeycomb topography on a variety of primary and immortalized cell lines, and drew important conclusions that can be translated to the construction of optimal biomaterials for cell culture. The literature also encouragingly shows the potential of honeycomb films to induce differentiation of stem cells down a specific lineage without the need for biochemical stimuli. Here, we review the main studies where BF honeycomb films are used as substrates for tissue engineering applications. Furthermore, we highlight the numerous advantages of the porous nature of the films, such as the enhanced, spatially controlled adsorption of proteins, the topographical cues influencing cellular behavior, and the enhanced permeability which is essential both in vitro and in vivo. Finally, this review highlights the elegant use of honeycomb films as drug-eluting biomaterials or as reservoirs for distinct drug delivery systems. STATEMENT OF SIGNIFICANCE Combining biocompatible surfaces and 3D nano/microscale topographies, such as pores or grooves, is an effective strategy for manufacturing tissue engineering scaffolds. The breath figure (BF) method is an easy technique to prepare cell culture substrates with an organized, honeycomb-like porous surface. These surface features make these scaffolds valuable for studying how the cells interact with the biomaterials. Their unique surface topography can also resemble the natural environment of the tissues in the human body. For that reason, numerous studies, using different cell types, have shown that honeycomb films can constitute high performance substrates for cell culture. Here, we review those studies, we highlight the advantages of honeycomb films in tissue engineering and we discuss their potential as unique drug-eluting systems.
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Affiliation(s)
- Maria Teresa Calejo
- BioMediTech Institute and Faculty of Biomedical Sciences and Engineering, Tampere University of Technology, Tampere, Finland.
| | - Tanja Ilmarinen
- BioMediTech Institute and Faculty of Medicine and Life Sciences, University of Tampere, Tampere, Finland
| | - Heli Skottman
- BioMediTech Institute and Faculty of Medicine and Life Sciences, University of Tampere, Tampere, Finland
| | - Minna Kellomäki
- BioMediTech Institute and Faculty of Biomedical Sciences and Engineering, Tampere University of Technology, Tampere, Finland; BioMediTech Institute and Faculty of Medicine and Life Sciences, University of Tampere, Tampere, Finland
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171
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Khayamian MA, Ansaryan S, Moghtaderi H, Abdolahad M. Applying VHB acrylic elastomer as a cell culture and stretchable substrate. INT J POLYM MATER PO 2018. [DOI: 10.1080/00914037.2017.1419244] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Mohammad Ali Khayamian
- School of Mechanical Engineering, College of Engineering, University of Tehran, Tehran, Iran
- Nano Electronic Center of Excellence, Nano Bio Electronic Devices Lab, School of Electrical and Computer Engineering, University of Tehran, Tehran, Iran
- Nano Electronic Center of Excellence, Thin Film and Nanoelectronic Lab, School of Electrical and Computer Engineering, University of Tehran, Tehran, Iran
| | - Saeid Ansaryan
- Nano Electronic Center of Excellence, Nano Bio Electronic Devices Lab, School of Electrical and Computer Engineering, University of Tehran, Tehran, Iran
- Nano Electronic Center of Excellence, Thin Film and Nanoelectronic Lab, School of Electrical and Computer Engineering, University of Tehran, Tehran, Iran
| | - Hassan Moghtaderi
- Nano Electronic Center of Excellence, Nano Bio Electronic Devices Lab, School of Electrical and Computer Engineering, University of Tehran, Tehran, Iran
- Nano Electronic Center of Excellence, Thin Film and Nanoelectronic Lab, School of Electrical and Computer Engineering, University of Tehran, Tehran, Iran
- Department of Animal Biology, School of Biology, College of Science, University of Tehran, Tehran, Iran
| | - Mohammad Abdolahad
- Nano Electronic Center of Excellence, Nano Bio Electronic Devices Lab, School of Electrical and Computer Engineering, University of Tehran, Tehran, Iran
- Nano Electronic Center of Excellence, Thin Film and Nanoelectronic Lab, School of Electrical and Computer Engineering, University of Tehran, Tehran, Iran
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172
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Başaran İ, Oral A. Grafting of poly(ε-caprolactone) on electrospun gelatin nanofiber through surface-initiated ring-opening polymerization. INT J POLYM MATER PO 2018. [DOI: 10.1080/00914037.2017.1417287] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- İhsan Başaran
- Department of Chemistry, Biopolymer and Advanced Polymeric Materials Laboratory, Faculty of Literature and Science, Çanakkale Onsekiz Mart University, Çanakkale, Turkey
- Science Technology Application and Research Center, Çanakkale Onsekiz Mart University, Çanakkale, Turkey
| | - Ayhan Oral
- Department of Chemistry, Biopolymer and Advanced Polymeric Materials Laboratory, Faculty of Literature and Science, Çanakkale Onsekiz Mart University, Çanakkale, Turkey
- Science Technology Application and Research Center, Çanakkale Onsekiz Mart University, Çanakkale, Turkey
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173
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Lee MC, Seonwoo H, Garg P, Jang KJ, Pandey S, Park SB, Kim HB, Lim J, Choung YH, Chung JH. Chitosan/PEI patch releasing EGF and the EGFR gene for the regeneration of the tympanic membrane after perforation. Biomater Sci 2018; 6:364-371. [DOI: 10.1039/c7bm01061c] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
EGF and EGFR gene-releasing PEI/chitosan patch (EErP-CPs) was developed to increase the regeneration of tympanic membrane perforations.
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Affiliation(s)
- Myung Chul Lee
- Department of Biosystems & Biomaterials Science and Engineering
- Seoul National University
- Seoul 151-742
- Republic of Korea
| | - Hoon Seonwoo
- Department of Industrial Machinery Engineering
- Sunchon National university
- 315 Maegok-dong Sunchon
- Republic of Korea
| | - Pankaj Garg
- Research Institute for Agriculture and Life Sciences
- Seoul National University
- Seoul
- Republic of Korea
| | - Kyoung Je Jang
- Department of Biosystems & Biomaterials Science and Engineering
- Seoul National University
- Seoul 151-742
- Republic of Korea
| | - Shambhavi Pandey
- Research Institute for Agriculture and Life Sciences
- Seoul National University
- Seoul
- Republic of Korea
| | - Sang Bae Park
- Department of Biosystems & Biomaterials Science and Engineering
- Seoul National University
- Seoul 151-742
- Republic of Korea
| | - Hong Bae Kim
- Department of Biosystems & Biomaterials Science and Engineering
- Seoul National University
- Seoul 151-742
- Republic of Korea
| | - Jaewoon Lim
- Department of Biosystems & Biomaterials Science and Engineering
- Seoul National University
- Seoul 151-742
- Republic of Korea
| | - Yun Hoon Choung
- Department of Otalaryngology
- Ajou University School of Medicine
- Suwon 443-749
- Republic of Korea
| | - Jong Hoon Chung
- Department of Biosystems & Biomaterials Science and Engineering
- Seoul National University
- Seoul 151-742
- Republic of Korea
- Research Institute for Agriculture and Life Sciences
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174
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Chemical nanocavitation of surfaces to enhance the utility of stainless steel as a medical material. Colloids Surf B Biointerfaces 2018; 161:677-687. [DOI: 10.1016/j.colsurfb.2017.11.051] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Revised: 11/17/2017] [Accepted: 11/20/2017] [Indexed: 12/20/2022]
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175
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Alghazali KM, Newby SD, Nima ZA, Hamzah RN, Watanabe F, Bourdo SE, Masi TJ, Stephenson SM, Anderson DE, Dhar MS, Biris AS. Functionalized gold nanorod nanocomposite system to modulate differentiation of human mesenchymal stem cells into neural-like progenitors. Sci Rep 2017; 7:16654. [PMID: 29192282 PMCID: PMC5709514 DOI: 10.1038/s41598-017-16800-9] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2017] [Accepted: 11/13/2017] [Indexed: 01/09/2023] Open
Abstract
A 2D multifunctional nanocomposite system of gold nanorods (AuNRs) was developed. Gold nanorods were functionalized via polyethylene glycol with a terminal amine, and, were characterized using transmission and scanning electron microscopy, ultra violet-visible and X-ray photoelectron spectroscopy, and Zeta-potential. The system was cytocompatible to and maintained the integrity of Schwann cells. The neurogenic potential of adipose tissue - derived human mesenchymal stem cells (hMSCs) was evaluated in vitro. The expression pattern and localization of Vimentin confirmed the mesenchymal origin of cells and tracked morphological changes during differentiation. The expression patterns of S100β and glial fibrillary acidic protein (GFAP), were used as indicator for neural differentiation. Results suggested that this process was enhanced when the cells were seeded on the AuNRs compared to the tissue-culture surface. The present study indicates that the design and the surface properties of the AuNRs enhances neural differentiation of hMSCs and hence, would be beneficial for neural tissue engineering scaffolds.
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Affiliation(s)
- Karrer M Alghazali
- Center of Integrative Nanotechnology Sciences, University of Arkansas at Little Rock, Little Rock, AR, 72204, USA
| | - Steven D Newby
- College of Veterinary Medicine, University of Tennessee, Knoxville, TN, 37996, USA
| | - Zeid A Nima
- Center of Integrative Nanotechnology Sciences, University of Arkansas at Little Rock, Little Rock, AR, 72204, USA
| | - Rabab N Hamzah
- Center of Integrative Nanotechnology Sciences, University of Arkansas at Little Rock, Little Rock, AR, 72204, USA
| | - Fumiya Watanabe
- Center of Integrative Nanotechnology Sciences, University of Arkansas at Little Rock, Little Rock, AR, 72204, USA
| | - Shawn E Bourdo
- Center of Integrative Nanotechnology Sciences, University of Arkansas at Little Rock, Little Rock, AR, 72204, USA
| | - Thomas J Masi
- University of Tennessee Graduate School of Medicine, Knoxville, TN, 37996, USA
| | - Stacy M Stephenson
- University of Tennessee Graduate School of Medicine, Knoxville, TN, 37996, USA
| | - David E Anderson
- College of Veterinary Medicine, University of Tennessee, Knoxville, TN, 37996, USA
| | - Madhu S Dhar
- College of Veterinary Medicine, University of Tennessee, Knoxville, TN, 37996, USA.
| | - Alexandru S Biris
- Center of Integrative Nanotechnology Sciences, University of Arkansas at Little Rock, Little Rock, AR, 72204, USA.
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176
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Graded functionalization of biomaterial surfaces using mussel-inspired adhesive coating of polydopamine. Colloids Surf B Biointerfaces 2017; 159:546-556. [DOI: 10.1016/j.colsurfb.2017.08.022] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Revised: 08/11/2017] [Accepted: 08/14/2017] [Indexed: 12/14/2022]
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177
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Aluminum Templates of Different Sizes with Micro-, Nano- and Micro/Nano-Structures for Cell Culture. COATINGS 2017. [DOI: 10.3390/coatings7110179] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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178
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Bianchi M, Pisciotta A, Bertoni L, Berni M, Gambardella A, Visani A, Russo A, de Pol A, Carnevale G. Osteogenic Differentiation of hDPSCs on Biogenic Bone Apatite Thin Films. Stem Cells Int 2017; 2017:3579283. [PMID: 29201060 PMCID: PMC5671751 DOI: 10.1155/2017/3579283] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Accepted: 09/14/2017] [Indexed: 01/03/2023] Open
Abstract
A previous study reported the structural characterization of biogenic apatite (BAp) thin films realized by a pulsed electron deposition system by ablation of deproteinized bovine bone. Thin films annealed at 400°C exhibited composition and crystallinity degree very close to those of biogenic apatite; this affinity is crucial for obtaining faster osseointegration compared to conventional, thick hydroxyapatite (HA) coatings, for both orthopedics and dentistry. Here, we investigated the adhesion, proliferation, and osteogenic differentiation of human dental pulp stem cells (hDPCS) on as-deposited and heat-treated BAp and stoichiometric HA. First, we showed that heat-treated BAp films can significantly promote hDPSC adhesion and proliferation. Moreover, hDPSCs, while initially maintaining the typical fibroblast-like morphology and stemness surface markers, later started expressing osteogenic markers such as Runx-2 and OSX. Noteworthy, when cultured in an osteogenic medium on annealed BAp films, hDPSCs were also able to reach a more mature and terminal commitment, with respect to HA and as-deposited films. Our findings suggest that annealed BAp films not only preserve the typical biological properties of stemness of, hDPSCs but also improve their ability of osteogenic commitment.
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Affiliation(s)
- Michele Bianchi
- Rizzoli Orthopaedic Institute, NanoBiotechnology Laboratory, Via di Barbiano 1/10, 40136 Bologna, Italy
| | - Alessandra Pisciotta
- Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Via Campi 287, 41125 Modena, Italy
| | - Laura Bertoni
- Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Via Campi 287, 41125 Modena, Italy
| | - Matteo Berni
- Rizzoli Orthopaedic Institute, NanoBiotechnology Laboratory, Via di Barbiano 1/10, 40136 Bologna, Italy
| | - Alessandro Gambardella
- Rizzoli Orthopaedic Institute, NanoBiotechnology Laboratory, Via di Barbiano 1/10, 40136 Bologna, Italy
| | - Andrea Visani
- Rizzoli Orthopaedic Institute, Laboratory of Biomechanics and Technology Innovation, Via di Barbiano 1/10, 40136 Bologna, Italy
| | - Alessandro Russo
- Rizzoli Orthopaedic Institute, NanoBiotechnology Laboratory, Via di Barbiano 1/10, 40136 Bologna, Italy
| | - Anto de Pol
- Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Via Campi 287, 41125 Modena, Italy
| | - Gianluca Carnevale
- Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Via Campi 287, 41125 Modena, Italy
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179
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Yuan Y, Shi X, Gan Z, Wang F. Modification of porous PLGA microspheres by poly-l-lysine for use as tissue engineering scaffolds. Colloids Surf B Biointerfaces 2017; 161:162-168. [PMID: 29078165 DOI: 10.1016/j.colsurfb.2017.10.044] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2017] [Revised: 09/29/2017] [Accepted: 10/16/2017] [Indexed: 11/18/2022]
Abstract
Due to their good biocompatibility, biodegradability and special shapes, porous poly(lactic-co-glycolic acid) (PLGA) microspheres show a wide application in the field of tissue engineering. Herein we demonstrate a simple and low-cost method for modifying porous PLGA microspheres with poly-l-lysine (PLL) to promote cell growth on the microspheres. Porous PLGA microspheres were first treated by sodium hydroxide (NaOH) solution to introduce carboxyl groups on their surface. Then, the hydrolyzed microspheres (PLGA-H) were immerged in PLL solution to yield PLL-impregnated microspheres (PLGA-PLL). Cell experiments showed that although the cytotoxicity of microspheres was slightly increased after PLL modification, their cell viability was still higher than 85%. Compared with PLGA and PLGA-H microspheres, PLGA-PLL microspheres were more favorable for MG63 cell to attach and proliferate due to their increased initial cell attachment numbers and enhanced cell-matrix interactions. This new modification method of porous PLGA microspheres proposes a route toward efficient repair of tissue defects at reduced risk and cost level.
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Affiliation(s)
- Yin Yuan
- Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Xudong Shi
- Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China; Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China.
| | - Zhihua Gan
- Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China; State Key Laboratory of Organic-Inorganic Composites, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China
| | - Fosong Wang
- Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
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180
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Vearick SB, Demétrio KB, Xavier RG, Moreschi AH, Muller AF, Sanches PRS, Dos Santos LAL. Fiber-reinforced silicone for tracheobronchial stents: An experimental study. J Mech Behav Biomed Mater 2017; 77:494-500. [PMID: 29032316 DOI: 10.1016/j.jmbbm.2017.10.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Revised: 10/05/2017] [Accepted: 10/08/2017] [Indexed: 11/17/2022]
Abstract
A trachea is a tubular structure composed of smooth muscle that is reinforced with cartilage rings. Some diseases can cause sagging in smooth muscle and cartilaginous tissue. The end result is reduction (narrowing) of the trachea diameter. A solution to this problem is the use of tracheal stents, which are small tubular devices made of silicone. One is inserted into the trachea to prevent or correct its constriction. The purpose of tracheal stent use is to maintain cartilage support that would otherwise be lost in the airway. Current tracheal stent models present limitations in terms of shape and characteristics of the silicone used in their production. One of the most important is the large thickness of the wall, which makes its placement difficult; this mainly applies to pediatric patients. The wall thickness of the stent is closely related to the mechanical properties of the material. This study aims to test the reinforcement of silicone with three kinds of fibers, and then stents that were produced using fiber with the best compressive strength characteristics. Silicone samples were reinforced with polypropylene (PP), polyamide (PA), and carbon fiber (CF) at concentrations of 2% and 4% (vol%), which then underwent tensile strength and Shore A hardness testing. Samples with fiber showed good characteristics; surface analyses were carried out and they were used to produce stents with an internal diameter of 11 or 13mm and a length of 50mm. Stents underwent compression tests for qualitative evaluation. Samples with 2% and 4% CF blends showed the best mechanical performance, and they were used to produce stents. These samples presented similar compressive strengths at low deformation, but stents with a 4% CF blend exhibited improved compressive strength at deformations greater than 30-50% of their diameter (P ≤ 0.05). The addition of 2% and 4% CF blends conferred greater mechanical strength and resistance to the silicone matrix. This is particularly true at low deformation, which is the condition where the stent is used when implanted. In the finite element compression strength tests, the stent composite showed greater compression strength with the addition of fiber, and the results were in accordance with mechanical compression tests performed on the stents. In vivo tests showed that, after 30 days of post-implantation in sheep trachea, an inflammatory process occurred in the region of the trachea in contact with the stent composite and with the stent without fiber (WF). This response is a common process during the first few days of implantation.
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Affiliation(s)
- Samanta Bianchi Vearick
- Biomaterials Laboratory, Universidade Federal do Rio Grande do Sul, School of Engineering, Av. Bento Gonçalves, 9500, Setor IV, Prédio 74 / sala 18, Campus do Vale, Bairro Agronomia, CEP 91509-900 Porto Alegre, RS, Brazil
| | - Kétner Bendo Demétrio
- PPGCEM, Post-Graduate Program in Science and Engineering Materials, UNESC - University of the South of Santa Catarina, CEP 88806-000 Criciúma, SC, Brazil.
| | - Rogério Gastal Xavier
- Clinical Hospital of Porto Alegre, Rua Ramiro Barcelos, 2350, Bairro Rio Branco, CEP 90035-903 Porto Alegre, RS, Brazil
| | - Alexandre Heitor Moreschi
- Clinical Hospital of Porto Alegre, Rua Ramiro Barcelos, 2350, Bairro Rio Branco, CEP 90035-903 Porto Alegre, RS, Brazil
| | - André Frotta Muller
- Clinical Hospital of Porto Alegre, Rua Ramiro Barcelos, 2350, Bairro Rio Branco, CEP 90035-903 Porto Alegre, RS, Brazil
| | - Paulo Roberto Stefani Sanches
- Clinical Hospital of Porto Alegre, Rua Ramiro Barcelos, 2350, Bairro Rio Branco, CEP 90035-903 Porto Alegre, RS, Brazil
| | - Luis Alberto Loureiro Dos Santos
- Biomaterials Laboratory, Universidade Federal do Rio Grande do Sul, School of Engineering, Av. Bento Gonçalves, 9500, Setor IV, Prédio 74 / sala 18, Campus do Vale, Bairro Agronomia, CEP 91509-900 Porto Alegre, RS, Brazil
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181
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Zeng YJ, Twan SC, Wang KW, Huang HH, Hsu YB, Wang CY, Lan MY, Lee SW. Enhanced Biocompatibility in Anodic TaO x Nanotube Arrays. NANOSCALE RESEARCH LETTERS 2017; 12:557. [PMID: 28975550 PMCID: PMC5626673 DOI: 10.1186/s11671-017-2325-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/18/2017] [Accepted: 09/25/2017] [Indexed: 06/07/2023]
Abstract
This study first investigates the biocompatibility of self-organized TaO x nanotube arrays with different nanotube diameters fabricated by electrochemical anodization. All as-anodized TaO x nanotubes were identified to be an amorphous phase. The transition in surface wettability with TaO x nanotube diameters can be explained based on Wenzel's model in terms of geometric roughness. In vitro biocompatibility evaluation further indicates that fibroblast cells exhibit an obvious wettability-dependent behavior on the TaO x nanotubes. The 35-nm-diameter TaO x nanotube arrays reveal the highest biocompatibility among all samples. This enhancement could be attributed to highly dense focal points provided by TaO x nanotubes due to higher surface hydrophilicity. This work demonstrates that the biocompatibility in Ta can be improved by forming TaO x nanotube arrays on the surface with appropriate nanotube diameter and geometric roughness.
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Affiliation(s)
- Yu-Jin Zeng
- Institute of Materials Science and Engineering, National Central University, Taoyuan, 320 Taiwan Republic of China
| | - Sheng-Chen Twan
- Institute of Materials Science and Engineering, National Central University, Taoyuan, 320 Taiwan Republic of China
| | - Kuan-Wen Wang
- Institute of Materials Science and Engineering, National Central University, Taoyuan, 320 Taiwan Republic of China
| | - Her-Hsiung Huang
- Department of Dentistry, National Yang-Ming University, Taipei, 11221 Taiwan Republic of China
| | - Yen-Bin Hsu
- Department of Otolaryngology Head and Neck Surgery, Taipei Veterans General Hospital, Taipei, 112 Taiwan Republic of China
- School of Medicine, National Yang-Ming University, Taipei, 112 Taiwan Republic of China
| | - Chien-Ying Wang
- Department of Emergency, Taipei Veterans General Hospital, Taipei, 112 Taiwan Republic of China
| | - Ming-Ying Lan
- Department of Otolaryngology Head and Neck Surgery, Taipei Veterans General Hospital, Taipei, 112 Taiwan Republic of China
- School of Medicine, National Yang-Ming University, Taipei, 112 Taiwan Republic of China
| | - Sheng-Wei Lee
- Institute of Materials Science and Engineering, National Central University, Taoyuan, 320 Taiwan Republic of China
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182
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Abdallah MN, Badran Z, Ciobanu O, Hamdan N, Tamimi F. Strategies for Optimizing the Soft Tissue Seal around Osseointegrated Implants. Adv Healthc Mater 2017; 6. [PMID: 28960892 DOI: 10.1002/adhm.201700549] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2017] [Revised: 07/12/2017] [Indexed: 12/20/2022]
Abstract
Percutaneous and permucosal devices such as catheters, infusion pumps, orthopedic, and dental implants are commonly used in medical treatments. However, these useful devices breach the soft tissue barrier that protects the body from the outer environment, and thus increase bacterial infections resulting in morbidity and mortality. Such associated infections can be prevented if these devices are effectively integrated with the surrounding soft tissue, and thus creating a strong seal from the surrounding environment. However, so far, there are no percutaneous/permucosal medical devices able to prevent infection by achieving strong integration at the soft tissue-device interface. This review gives an insight into the current status of research into soft tissue-implant interface and the challenges associated with these interfaces. Biological soft/hard tissue interfaces may provide insights toward engineering better soft tissue interfaces around percutaneous devices. In this review, focus is put on the history and current findings as well as recent progress of the strategies aiming to develop a strong soft tissue seal around osseointegrated implants, such as orthopedic and dental implants.
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Affiliation(s)
- Mohamed-Nur Abdallah
- Division of Biomedical Sciences; Faculty of Dentistry; McGill University; Montreal H3A 1G1 QC Canada
- Division of Orthodontics; Faculty of Dentistry; Toronto University; Toronto M5G 1G6 ON Canada
| | - Zahi Badran
- Division of Biomedical Sciences; Faculty of Dentistry; McGill University; Montreal H3A 1G1 QC Canada
- Department of Periodontology (CHU/Rmes Inserm U1229/UIC11); Faculty of Dental Surgery; University of Nantes; Nantes 44042 France
| | - Ovidiu Ciobanu
- Division of Biomedical Sciences; Faculty of Dentistry; McGill University; Montreal H3A 1G1 QC Canada
| | - Nader Hamdan
- Department of Dental Clinical Sciences; Faculty of Dentistry; Dalhousie University; Halifax B3H 4R2 NS Canada
| | - Faleh Tamimi
- Division of Biomedical Sciences; Faculty of Dentistry; McGill University; Montreal H3A 1G1 QC Canada
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183
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Natarajan J, Madras G, Chatterjee K. Development of Graphene Oxide-/Galactitol Polyester-Based Biodegradable Composites for Biomedical Applications. ACS OMEGA 2017; 2:5545-5556. [PMID: 30023749 PMCID: PMC6044677 DOI: 10.1021/acsomega.7b01139] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2017] [Accepted: 08/22/2017] [Indexed: 05/08/2023]
Abstract
We have developed nanocomposites based on galactitol/adipic acid in the molar ratio of 1:1 with different weight percentages of graphene oxide (GO). The objective of this study was to analyze the effect of enhanced physicochemical properties achieved due to the addition of GO to the polymers on cellular responses. The chemical structures of the polymer and composites were confirmed by Fourier transform infrared spectroscopy. Scanning electron microscopy revealed the uniform distribution of GO in the polymers. Differential scanning calorimetry showed no significant variation in the glass-transition temperature of the nanocomposites. Dynamic mechanical analysis demonstrated the increase of Young's modulus with the increase in the addition of GO to the polymer from 0.5 to 1 wt % and a dramatic decrease in modulus with the addition of 2 wt % GO to the polyester. Contact angle analysis illustrated a slight increase in hydrophilicity with the addition of GO to the polyester. Investigations on the hydrolytic degradation and dye release were performed and revealed that the degradation and release decreased with the increase in the weight percentages of GO but increased for 2 wt % GO with the polymer. The rates of degradation and dye release followed first-order and Higuchi kinetics, respectively. The initial in vitro cytocompatibility studies exhibited minimal toxicity. Mineralization studies proved that these nanocomposites stimulated osteogenesis. This study has salient implications for designing biodegradable polymers for use as scaffolds with tailored release.
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Affiliation(s)
- Janeni Natarajan
- Centre
for Nano Science and Engineering, Department of Chemical Engineering, and Department of
Materials Engineering, Indian Institute
of Science, C.V. Raman
Avenue, Bangalore 560012, India
| | - Giridhar Madras
- Centre
for Nano Science and Engineering, Department of Chemical Engineering, and Department of
Materials Engineering, Indian Institute
of Science, C.V. Raman
Avenue, Bangalore 560012, India
| | - Kaushik Chatterjee
- Centre
for Nano Science and Engineering, Department of Chemical Engineering, and Department of
Materials Engineering, Indian Institute
of Science, C.V. Raman
Avenue, Bangalore 560012, India
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184
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Natarajan J, Madras G, Chatterjee K. Poly(ester amide)s from Poly(ethylene terephthalate) Waste for Enhancing Bone Regeneration and Controlled Release. ACS APPLIED MATERIALS & INTERFACES 2017; 9:28281-28297. [PMID: 28766935 DOI: 10.1021/acsami.7b09299] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The present study elucidates the facile synthesis and exceptional properties of a family of novel poly(ester amide)s (PEAs) based on bis(2-hydroxy ethylene) terephthalamide that was obtained from the poly(ethylene terephthalate) waste. Fourier transform infrared and 1H NMR were used to verify the presence of ester and amide in the polymer backbone. Differential scanning calorimetry data showed that the glass transition temperature decreased with as the chain length of dicarboxylic acids increased. Dynamic mechanical analysis and contact angle studies proved that the modulus values and hydrophobicity increased with as the chain lengths of dicarboxylic acids increased. In vitro hydrolytic degradation and dye release studies demonstrated that the degradation and release decreased with as the chain lengths of dicarboxylic acids increased. Modeling these data illustrated that degradation and release follow first-order degradation and zero-order release, respectively. The in vitro cytocompatibility studies confirmed the minimal toxicity characteristic of these polymers. Osteogenic studies proved that these polymers can be highly influential in diverting the cells toward osteogenic lineage. Alizarin red staining evinced the presence of twice the amount of calcium phosphate deposits by the cells on these polymers when compared to the control. The observed result was also corroborated by the increased expression of alkaline phosphatase. These findings were further validated by the markedly higher mRNA expressions for known osteogenic markers using real time polymerase chain reaction. Therefore, these polymers efficiently promoted osteogenesis. This study demonstrates that the physical properties, degradation, and release kinetics can be altered to meet the specific requirements in organ regeneration as well as facilitate simultaneous polymer resorption through control of the chain length of the monomers. The findings of this study have significant implications for designing cost-effective biodegradable polymers for tissue engineering.
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Affiliation(s)
- Janeni Natarajan
- Centre for Nano Science and Engineering, ‡Department of Chemical Engineering, and §Department of Materials Engineering, Indian Institute of Science , Bangalore 560012, India
| | - Giridhar Madras
- Centre for Nano Science and Engineering, ‡Department of Chemical Engineering, and §Department of Materials Engineering, Indian Institute of Science , Bangalore 560012, India
| | - Kaushik Chatterjee
- Centre for Nano Science and Engineering, ‡Department of Chemical Engineering, and §Department of Materials Engineering, Indian Institute of Science , Bangalore 560012, India
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185
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Lee JH, Koak JY, Lim YJ, Kwon HB, Kong H, Kim MJ. Effects of fluoride-modified titanium surfaces with the similar roughness on RUNX2 gene expression of osteoblast-like MG63 cells. J Biomed Mater Res A 2017; 105:3102-3109. [DOI: 10.1002/jbm.a.36159] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Revised: 03/10/2017] [Accepted: 06/13/2017] [Indexed: 01/05/2023]
Affiliation(s)
- Ji-Hyoun Lee
- Department of Prosthodontics and Dental Research Institute, School of Dentistry; Seoul National University; 101 Daehak-ro Jongno-gu, Seoul 03080 Republic of Korea
| | - Jai-Young Koak
- Department of Prosthodontics and Dental Research Institute, School of Dentistry; Seoul National University; 101 Daehak-ro Jongno-gu, Seoul 03080 Republic of Korea
| | - Young-Jun Lim
- Department of Prosthodontics and Dental Research Institute, School of Dentistry; Seoul National University; 101 Daehak-ro Jongno-gu, Seoul 03080 Republic of Korea
| | - Ho-Beom Kwon
- Department of Prosthodontics and Dental Research Institute, School of Dentistry; Seoul National University; 101 Daehak-ro Jongno-gu, Seoul 03080 Republic of Korea
| | - Hyunjoon Kong
- Department of Chemical & Biomolecular Engineering; University of Illinois, Urbana-Champaign; 600 S Mathews Avenue, Urbana Illinois 61801
| | - Myung-Joo Kim
- Department of Prosthodontics and Dental Research Institute, School of Dentistry; Seoul National University; 101 Daehak-ro Jongno-gu, Seoul 03080 Republic of Korea
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186
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Morin EA, He W. In vitro
study of central nervous system foreign body response towards hydrogel particle modified planar substrate. J Biomed Mater Res A 2017; 105:3242-3250. [DOI: 10.1002/jbm.a.36180] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Revised: 06/30/2017] [Accepted: 08/01/2017] [Indexed: 11/08/2022]
Affiliation(s)
- Emily A. Morin
- Department of Mechanical, Aerospace, and Biomedical EngineeringUniversity of TennesseeKnoxville Tennessee37996
| | - Wei He
- Department of Mechanical, Aerospace, and Biomedical EngineeringUniversity of TennesseeKnoxville Tennessee37996
- Department of Materials Science and EngineeringUniversity of TennesseeKnoxville Tennessee37996
- Department of Polymer Science and EngineeringDalian University of TechnologyDalian Liaoning116023 China
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187
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Cao B, Peng Y, Liu X, Ding J. Effects of Functional Groups of Materials on Nonspecific Adhesion and Chondrogenic Induction of Mesenchymal Stem Cells on Free and Micropatterned Surfaces. ACS APPLIED MATERIALS & INTERFACES 2017; 9:23574-23585. [PMID: 28616967 DOI: 10.1021/acsami.7b08339] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Functional groups of materials are known to affect cell behaviors, yet the corresponding effect on stem cell differentiation is always coupled with that of cell spreading; it is thus unclear whether the chemical groups influence cell differentiation directly or via cell spreading indirectly. Herein we used a unique surface patterning technique to decouple the corresponding effects. Mesenchymal stem cells (MSCs) derived from bone marrow were seeded on surfaces coated with alkanethiols with one of four functional end groups (-CH3, -OH, -COOH, and -NH2) and underwent 9 days of chondrogenic induction. The measurements of quartz crystal microbalance with dissipation confirmed less proteins adsorbed from the cell culture media on the neutral -CH3 and -OH surfaces than on the charged -COOH and -NH2 surfaces. The neutral surfaces exhibited less cell spreading and higher extents of chondrogenic differentiation than the charged surfaces, according to the characterizations of immunofluorescence staining and quantitative real-time polymerase chain reaction. We further used a transfer lithography technique to prepare patterned surfaces on nonfouling poly(ethylene glycol) hydrogels to localize single MSCs on microislands with self-assembly monolayers of different alkanethiols, under given microisland areas and thus well-defined spreading areas of cells. While small microislands were always beneficial for chondrogenic induction, we found that the type of functional groups had no significant effect on chondrogenic induction under the given cell spreading areas, implying that the chemical groups influence cell differentiation only indirectly. Our results hence illustrate that functional groups regulate stem cell differentiation via tuning protein adsorption and then nonspecific cell adhesion and thus cell spreading.
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Affiliation(s)
- Bin Cao
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University , Shanghai 200433, China
| | - Yuanmeng Peng
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University , Shanghai 200433, China
| | - Xiangnan Liu
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University , Shanghai 200433, China
| | - Jiandong Ding
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University , Shanghai 200433, China
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188
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Tan BY, Nguyen LTH, Kim HS, Kim JH, Ng KW. Cultivation of human dermal fibroblasts and epidermal keratinocytes on keratin-coated silica bead substrates. J Biomed Mater Res A 2017. [DOI: 10.1002/jbm.a.36142] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Bee Yi Tan
- School of Materials Science and Engineering; Nanyang Technological University; 50 Nanyang Avenue Singapore 639798 Singapore
| | - Luong T. H. Nguyen
- School of Materials Science and Engineering; Nanyang Technological University; 50 Nanyang Avenue Singapore 639798 Singapore
| | - Hyo-Sop Kim
- Department of Molecular Science and Technology; Ajou University; Suwon 443-749 Korea
| | - Jae-Ho Kim
- Department of Molecular Science and Technology; Ajou University; Suwon 443-749 Korea
| | - Kee Woei Ng
- School of Materials Science and Engineering; Nanyang Technological University; 50 Nanyang Avenue Singapore 639798 Singapore
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189
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Abstract
Often the view is expressed that water contact angle (WCA) or other wettability/surface energy measurements made on a material surface can be used to predict cellular attachment to materials, e.g., bacteria attach to hydrophobic surfaces. In this article, the authors present a perspective emerging from their work that has failed to find relationships between WCA and microbial and stem cell attachment within large diversity material libraries and compare with the literature concluding that such simple rules are (unfortunately) wholly inadequate to explain cell–material interactions.
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190
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Bio-functionalizing heterogeneous phase activated titanium by multiphoton ionization energy mechanism to harmonize cell proliferative behavior. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 76:448-456. [PMID: 28482549 DOI: 10.1016/j.msec.2017.03.111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2016] [Revised: 01/22/2017] [Accepted: 03/13/2017] [Indexed: 11/23/2022]
Abstract
Cellular interactions are regulated by various mechanical, physical and chemical factors that are either introduced to or are pre-existing in their local microenvironments. These factors include geometric confinement, cell-substrate interactions and cell-cell contacts. The systematic elucidation of these dictating mechanisms is crucial for fundamental understanding of regenerative medicine and for designing biomedical devices. Here, we have developed an elegant multi-photon ionization based mechanism, which accomplishes selective surface bio-functionalization of native titanium substrates, to achieve stable cellular confinements. In particular, we applied selective titanium phase activation for cellular confinement of mouse fibroblasts and osteoblast cells in an effort to examine their directionality and proliferative behavior under confinement. The experimental results suggest, both mouse fibroblasts and osteoblasts can be manipulated, guided and aligned along an induced orientation by selective hongquiite phase activation. The cell viability of both fibroblast and osteoblast cells were observed through fluorescent assays and SEM techniques. The phase activated surface fabricated influenced both nuclei and actin cytoskeletal re-arrangement of cell structures.
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191
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Marashi-Najafi F, Khalil-Allafi J, Etminanfar M. Biocompatibility of hydroxyapatite coatings deposited by pulse electrodeposition technique on the Nitinol superelastic alloy. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 76:278-286. [DOI: 10.1016/j.msec.2017.03.064] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Revised: 01/28/2017] [Accepted: 03/09/2017] [Indexed: 10/20/2022]
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192
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Mi HY, Jing X, Napiwocki BN, Hagerty BS, Chen G, Turng LS. Biocompatible, degradable thermoplastic polyurethane based on polycaprolactone-block-polytetrahydrofuran-block-polycaprolactone copolymers for soft tissue engineering. J Mater Chem B 2017; 5:4137-4151. [PMID: 29170715 PMCID: PMC5695921 DOI: 10.1039/c7tb00419b] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Biodegradable synthetic polymers have been widely used as tissue engineering scaffold materials. Even though they have shown excellent biocompatibility, they have failed to resemble the low stiffness and high elasticity of soft tissues because of the presence of massive rigid ester bonds. Herein, we synthesized a new thermoplastic polyurethane elastomer (CTC-PU(BET)) using poly ester ether triblock copolymer (polycaprolactone-block-polytetrahydrofuran-block-polycaprolactone triblock copolymer, PCTC) as the soft segment, aliphatic diisocyanate (hexamethylene diisocyanate, HDI) as the hard segment, and degradable diol (bis(2-hydroxyethyl) terephthalate, BET) as the chain extender. PCTC inhibited crystallization and reduced the melting temperature of CTC-PU(BET), and BET dramatically enhanced the thermal decomposition and hydrolytic degradation rate when compared with conventional polyester-based biodegradable TPUs. The CTC-PU(BET) synthesized in this study possessed a low tensile modulus and tensile strength of 2.2 MPa and 1.3 MPa, respectively, and an elongation-at-break over 700%. Meanwhile, it maintained a 95.3% recovery rate and 90% resilience over ten cycles of loading and unloading. In addition, the TPU could be electrospun into both random and aligned fibrous scaffolds consisting of major microfibers and nanobranches. 3T3 fibroblast cell culture confirmed that these scaffolds outperformed the conventional biodegradable TPU scaffolds in terms of substrate-cellular interactions and cell proliferation. Considering the advantages of this TPU, such as ease of synthesis, low cost, low stiffness, high elasticity, controllable degradation rate, ease of processability, and excellent biocompatibility, it has great prospects to be used as a tissue engineering scaffold material for soft tissue regeneration.
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Affiliation(s)
- Hao-Yang Mi
- Department of Mechanical Engineering, University of
Wisconsin–Madison, Madison, WI, 53706, USA
- Department of Industrial Equipment and Control Engineering, South
China University of Technology, Guangzhou, 510640, China
- Wisconsin Institute for Discovery, University of
Wisconsin–Madison, Madison, Wisconsin, 53715, USA
| | - Xin Jing
- Department of Industrial Equipment and Control Engineering, South
China University of Technology, Guangzhou, 510640, China
- Wisconsin Institute for Discovery, University of
Wisconsin–Madison, Madison, Wisconsin, 53715, USA
| | - Brett N. Napiwocki
- Wisconsin Institute for Discovery, University of
Wisconsin–Madison, Madison, Wisconsin, 53715, USA
- Department of Biomedical Engineering, University of
Wisconsin–Madison, Madison, WI, 53706, USA
| | - Breanna S. Hagerty
- Wisconsin Institute for Discovery, University of
Wisconsin–Madison, Madison, Wisconsin, 53715, USA
| | - Guojun Chen
- Wisconsin Institute for Discovery, University of
Wisconsin–Madison, Madison, Wisconsin, 53715, USA
| | - Lih-Sheng Turng
- Department of Mechanical Engineering, University of
Wisconsin–Madison, Madison, WI, 53706, USA
- Wisconsin Institute for Discovery, University of
Wisconsin–Madison, Madison, Wisconsin, 53715, USA
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193
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Chung JJ, Sum BST, Li S, Stevens MM, Georgiou TK, Jones JR. Effect of Comonomers on Physical Properties and Cell Attachment to Silica-Methacrylate/Acrylate Hybrids for Bone Substitution. Macromol Rapid Commun 2017; 38. [DOI: 10.1002/marc.201700168] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Revised: 04/24/2017] [Indexed: 01/28/2023]
Affiliation(s)
- Justin J. Chung
- Department of Materials; Imperial College London; London SW7 2AZ UK
| | - Brian S. T. Sum
- Department of Materials; Imperial College London; London SW7 2AZ UK
| | - Siwei Li
- Department of Materials; Imperial College London; London SW7 2AZ UK
| | - Molly M. Stevens
- Department of Materials; Imperial College London; London SW7 2AZ UK
- Department of Bioengineering; Imperial College London; London SW7 2AZ UK
- Institute of Biomedical Engineering; Imperial College London; London SW7 2AZ UK
| | | | - Julian R. Jones
- Department of Materials; Imperial College London; London SW7 2AZ UK
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194
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Kadakia PU, Growney Kalaf EA, Dunn AJ, Shornick LP, Sell SA. Comparison of silk fibroin electrospun scaffolds with poloxamer and honey additives for burn wound applications. J BIOACT COMPAT POL 2017. [DOI: 10.1177/0883911517710664] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
A primary aim in wound-healing research is to construct an inexpensive, biodegradable dermal regeneration template with heightened moisture retention and permeability properties. The presence of moisture is important for optimal burn wound healing as it creates an environment for re-epithelialization and minimizes the risk of infections. Permeability can be achieved through a process known as electrospinning. This scaffold fabrication technique creates a mat of randomly oriented nanofibers that can readily mimic native extracellular matrix. Novel electrospun silk fibroin scaffolds were fabricated with poloxamer 407 (P407) and Manuka honey additives for a burn wound dermal regeneration template application. Enhanced human dermal fibroblast adhesion and cell infiltration were observed with the inclusion of P407, and scaffolds incorporated with Manuka honey demonstrated increased water uptake and a higher cell density within the scaffolds at the end of a 28-day period. Overall, this study established that both the silk fibroin/P407 and silk fibroin/Manuka honey scaffolds have the potential to be successful dermal regeneration templates, with P407 increasing surface wettability and Manuka honey modulating moisture retention.
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Affiliation(s)
- Parin U Kadakia
- Department of Biomedical Engineering, Saint Louis University, St. Louis, MO, USA
| | | | - Andrew J Dunn
- Department of Biomedical Engineering, Saint Louis University, St. Louis, MO, USA
| | | | - Scott A Sell
- Department of Biomedical Engineering, Saint Louis University, St. Louis, MO, USA
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195
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Mechanical, In Vitro Corrosion Resistance and Biological Compatibility of Cast and Annealed Ti25Nb10Zr Alloy. METALS 2017. [DOI: 10.3390/met7030086] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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196
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Sangsanoh P, Israsena N, Suwantong O, Supaphol P. Effect of the surface topography and chemistry of poly(3-hydroxybutyrate) substrates on cellular behavior of the murine neuroblastoma Neuro2a cell line. Polym Bull (Berl) 2017. [DOI: 10.1007/s00289-017-1947-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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197
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Yang Y, Ding X, Zou T, Peng G, Liu H, Fan Y. Preparation and characterization of electrospun graphene/silk fibroin conductive fibrous scaffolds. RSC Adv 2017. [DOI: 10.1039/c6ra26807b] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A conductive fibrous scaffold made of silk fibroin and graphene was developed using electrospinning technique. The 3% G/SF scaffolds showed improved electroactivity and mechanical properties. Moreover, they could support the cell growth in vitro.
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Affiliation(s)
- Yi Yang
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education
- International Research Center for Implantable and Interventional Medical Devices
- School of Biological Science and Medical Engineering
- Beihang University
- Beijing 100191
| | - Xili Ding
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education
- International Research Center for Implantable and Interventional Medical Devices
- School of Biological Science and Medical Engineering
- Beihang University
- Beijing 100191
| | - Tongqiang Zou
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education
- International Research Center for Implantable and Interventional Medical Devices
- School of Biological Science and Medical Engineering
- Beihang University
- Beijing 100191
| | - Ge Peng
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education
- International Research Center for Implantable and Interventional Medical Devices
- School of Biological Science and Medical Engineering
- Beihang University
- Beijing 100191
| | - Haifeng Liu
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education
- International Research Center for Implantable and Interventional Medical Devices
- School of Biological Science and Medical Engineering
- Beihang University
- Beijing 100191
| | - Yubo Fan
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education
- International Research Center for Implantable and Interventional Medical Devices
- School of Biological Science and Medical Engineering
- Beihang University
- Beijing 100191
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198
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Lee HB, Hsu HC, Wu SC, Hsu SK, Wang PH, Ho WF. Microstructure and Characteristics of Calcium Phosphate Layers on Bioactive Oxide Surfaces of Air-Sintered Titanium Foams after Immersion in Simulated Body Fluid. MATERIALS (BASEL, SWITZERLAND) 2016; 9:E956. [PMID: 28774076 PMCID: PMC5456994 DOI: 10.3390/ma9120956] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/12/2016] [Revised: 11/10/2016] [Accepted: 11/17/2016] [Indexed: 11/20/2022]
Abstract
We propose a simple and low-cost process for the preparation of porous Ti foams through a sponge replication method using single-step air sintering at various temperatures. In this study, the apatite-forming ability of air-sintered Ti samples after 21 days of immersion in simulated body fluid (SBF) was investigated. The microstructures of the prepared Ca-P deposits were examined by X-ray diffraction (XRD), field-emission scanning electron microscopy (FE-SEM), Fourier transform infrared (FTIR) spectroscopy, and cross-sectional transmission electron microscopy (TEM). In contrast to the control sample sintered in vacuum, which was found to have the simple hexagonal α-Ti phase, the air-sintered samples contained only the rutile phase. High intensities of XRD peaks for rutile TiO₂ were obtained with samples sintered at 1000 °C. Moreover, the air-sintered Ti samples had a greater apatite-forming ability than that of the Ti sample sintered in vacuum. Ti samples sintered at 900 and 1000 °C had large aggregated spheroidal particles on their surfaces after immersion in SBF for 21 days. Combined XRD, energy-dispersive X-ray spectroscopy, FTIR spectroscopy, and TEM results suggest that the calcium phosphate deposited on the rutile TiO₂ surfaces consist of carbonated calcium-deficient hydroxyapatite instead of octacalcium phosphate.
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Affiliation(s)
- Hung-Bin Lee
- Department of Materials Science and Engineering, Da-Yeh University, Changhua 51591, Taiwan.
| | - Hsueh-Chuan Hsu
- Department of Dental Technology and Materials Science, Central Taiwan University of Science and Technology, Taichung 40601, Taiwan.
| | - Shih-Ching Wu
- Department of Dental Technology and Materials Science, Central Taiwan University of Science and Technology, Taichung 40601, Taiwan.
| | - Shih-Kuang Hsu
- Department of Dental Technology and Materials Science, Central Taiwan University of Science and Technology, Taichung 40601, Taiwan.
| | - Peng-Hsiang Wang
- Department of Mechanical and Automation Engineering, Da-Yeh University, Changhua 51591, Taiwan.
| | - Wen-Fu Ho
- Department of Chemical and Materials Engineering, National University of Kaohsiung, Kaohsiung 81148, Taiwan.
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199
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Guo S, Zhu X, Li M, Shi L, Ong JLT, Jańczewski D, Neoh KG. Parallel Control over Surface Charge and Wettability Using Polyelectrolyte Architecture: Effect on Protein Adsorption and Cell Adhesion. ACS APPLIED MATERIALS & INTERFACES 2016; 8:30552-30563. [PMID: 27762557 DOI: 10.1021/acsami.6b09481] [Citation(s) in RCA: 96] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Surface charge and wettability, the two prominent physical factors governing protein adsorption and cell adhesion, have been extensively investigated in the literature. However, a comparison between these driving forces in terms of their independent and cooperative effects in affecting adhesion is rarely explored on a systematic and quantitative level. Herein, we formulate a protocol that features two-dimensional control over both surface charge and wettability with limited cross-parameter influence. This strategy is implemented by controlling both the polyion charge density in the layer-by-layer (LbL) assembly process and the polyion side-chain chemical structures. The 2D property matrix spans surface isoelectric points ranging from 5 to 9 and water contact angles from 35 to 70°, with other interferential factors (e.g., roughness) eliminated. The interplay between these two surface variables influences protein (bovine serum albumin, lysozyme) adsorption and 3T3 fibroblast cell adhesion. For proteins, we observe the presence of thresholds for surface wettability and electrostatic driving forces necessary to affect adhesion. Beyond these thresholds, the individual effects of electrostatic forces and wettability are observed. For fibroblast, both surface charge and wettability have an effect on its adhesion. The combined effects of positive charge and hydrophilicity lead to the highest cell adhesion, whereas negative charge and hydrophobicity lead to the lowest cell adhesion. Our design strategy can potentially form the basis for studying the distinct behaviors of electrostatic force or wettability driven interfacial phenomena and serve as a reference in future studies assessing protein adsorption and cell adhesion to surfaces with known charge and wettability within the property range studied here.
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Affiliation(s)
- Shanshan Guo
- NUS Graduate School for Integrative Science and Engineering, National University of Singapore , Kent Ridge, Singapore 117576
| | - Xiaoying Zhu
- Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research , 2 Fusionopolis Way, Singapore 138634
- Department of Environmental Science, Zhejiang University , Hangzhou, China 310058
| | - Min Li
- Department of Chemical & Biomolecular Engineering, National University of Singapore , Kent Ridge, Singapore 119260
| | - Liya Shi
- Department of Chemical & Biomolecular Engineering, National University of Singapore , Kent Ridge, Singapore 119260
| | - June Lay Ting Ong
- Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research , 2 Fusionopolis Way, Singapore 138634
| | - Dominik Jańczewski
- Laboratory of Technological Processes, Faculty of Chemistry, Warsaw University of Technology , Noakowskiego 3, 00-664 Warsaw, Poland
| | - Koon Gee Neoh
- NUS Graduate School for Integrative Science and Engineering, National University of Singapore , Kent Ridge, Singapore 117576
- Department of Chemical & Biomolecular Engineering, National University of Singapore , Kent Ridge, Singapore 119260
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200
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Charles PD, Anandapandian PA, Samuel S. Osteogenic potential of laser modified and conditioned titanium zirconium surfaces. J Indian Prosthodont Soc 2016; 16:253-8. [PMID: 27621544 PMCID: PMC5000562 DOI: 10.4103/0972-4052.186403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Statement of Problem: The osseointegration of dental implant is related to their composition and surface treatment. Titanium zirconium (TiZr) has been introduced as an alternative to the commercially pure titanium and its alloys as dental implant material, which is attributed to its superior mechanical and biological properties. Surface treatments of TiZr have been introduced to enhance their osseointegration ability; however, reliable, easy to use surface modification technique has not been established. Purpose: The purpose of this study was to evaluate and compare the effect of neodymium-doped yttrium aluminum garnet (Nd-YAG) laser surface treatment of TiZr implant alloy on their osteogenic potential. Materials and Methods: Twenty disc-shaped samples of 5 mm diameter and 2 mm height were milled from the TiZr alloy ingot. The polished discs were ultrasonically cleaned in distilled water. Ten samples each were randomly selected as Group A control samples and Group B consisted of Nd-YAG laser surface etched and conditioned test samples. These were evaluated for cellular response. Cellular adhesion and proliferation were quantified, and the results were statistically analyzed using nonparametric analysis. Cellular morphology was observed using electron and epiflurosence microscopy. Results: Nd-YAG laser surface modified and conditioned TiZr samples increased the osteogenic potential. Conclusion: Nd-YAG laser surface modification of TiZr, improves the cellular activity, surface roughness, and wettability, thereby increasing the osteogenic potential.
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Affiliation(s)
- P David Charles
- Department of Prosthodontics, SRM Dental College, Chennai, Tamil Nadu, India
| | | | - Shila Samuel
- Department of Biochemistry, VRR Institute of Biomedical Science, Chennai, Tamil Nadu, India
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