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Li Z, Giarto J, Zhang J, Gim J, Chen E, Enriquez E, Jafuta L, Mahalingam E, Turng LS. Design and Synthesis of P(AAm-co-NaAMPS)-Alginate-Xanthan Hydrogels and the Study of Their Mechanical and Rheological Properties in Artificial Vascular Graft Applications. Gels 2024; 10:319. [PMID: 38786235 PMCID: PMC11121731 DOI: 10.3390/gels10050319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2024] [Revised: 04/30/2024] [Accepted: 05/06/2024] [Indexed: 05/25/2024] Open
Abstract
Cardiovascular diseases (CVDs) are the number one cause of mortality among non-communicable diseases worldwide. Expanded polytetrafluoroethylene (ePTFE) is a widely used material for making artificial vascular grafts to treat CVDs; however, its application in small-diameter vascular grafts is limited by the issues of thrombosis formation and intimal hyperplasia. This paper presents a novel approach that integrates a hydrogel layer on the lumen of ePTFE vascular grafts through mechanical interlocking to efficiently facilitate endothelialization and alleviate thrombosis and restenosis problems. This study investigated how various gel synthesis variables, including N,N'-Methylenebisacrylamide (MBAA), sodium alginate, and calcium sulfate (CaSO4), influence the mechanical and rheological properties of P(AAm-co-NaAMPS)-alginate-xanthan hydrogels intended for vascular graft applications. The findings obtained can provide valuable guidance for crafting hydrogels suitable for artificial vascular graft fabrication. The increased sodium alginate content leads to increased equilibrium swelling ratios, greater viscosity in hydrogel precursor solutions, and reduced transparency. Adding more CaSO4 decreases the swelling ratio of a hydrogel system, which offsets the increased swelling ratio caused by alginate. Increased MBAA in the hydrogel system enhances both the shear modulus and Young's modulus while reducing the transparency of the hydrogel system and the pore size of freeze-dried samples. Overall, Hydrogel (6A12M) with 2.58 mg/mL CaSO4 was the optimal candidate for ePTFE-hydrogel vascular graft applications due to its smallest pore size, highest shear storage modulus and Young's modulus, smallest swelling ratio, and a desirable precursor solution viscosity that facilitates fabrication.
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Affiliation(s)
- Zhutong Li
- Department of Mechanical Engineering, University of Wisconsin-Madison, Madison, WI 53706, USA; (Z.L.); (E.C.); (E.E.); (L.J.)
- Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, WI 53715, USA; (J.G.); (E.M.)
| | - Joshua Giarto
- Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, WI 53715, USA; (J.G.); (E.M.)
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison WI 53706, USA
| | - Jue Zhang
- Morgridge Institute for Research, University of Wisconsin-Madison, Madison, WI 53715, USA;
| | - Jinsu Gim
- Dongnam Division, Korea Institute of Industrial Technology (KITECH), Jinju 52845, Republic of Korea;
| | - Edward Chen
- Department of Mechanical Engineering, University of Wisconsin-Madison, Madison, WI 53706, USA; (Z.L.); (E.C.); (E.E.); (L.J.)
- Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, WI 53715, USA; (J.G.); (E.M.)
| | - Eduardo Enriquez
- Department of Mechanical Engineering, University of Wisconsin-Madison, Madison, WI 53706, USA; (Z.L.); (E.C.); (E.E.); (L.J.)
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison WI 53706, USA
| | - Lauren Jafuta
- Department of Mechanical Engineering, University of Wisconsin-Madison, Madison, WI 53706, USA; (Z.L.); (E.C.); (E.E.); (L.J.)
- Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, WI 53715, USA; (J.G.); (E.M.)
| | - Esha Mahalingam
- Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, WI 53715, USA; (J.G.); (E.M.)
- College of Letters and Science, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Lih-Sheng Turng
- Department of Mechanical Engineering, University of Wisconsin-Madison, Madison, WI 53706, USA; (Z.L.); (E.C.); (E.E.); (L.J.)
- Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, WI 53715, USA; (J.G.); (E.M.)
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2
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Crago M, Lee A, Hoang TP, Talebian S, Naficy S. Protein adsorption on blood-contacting surfaces: A thermodynamic perspective to guide the design of antithrombogenic polymer coatings. Acta Biomater 2024; 180:46-60. [PMID: 38615811 DOI: 10.1016/j.actbio.2024.04.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2024] [Revised: 04/08/2024] [Accepted: 04/09/2024] [Indexed: 04/16/2024]
Abstract
Blood-contacting medical devices often succumb to thrombosis, limiting their durability and safety in clinical applications. Thrombosis is fundamentally initiated by the nonspecific adsorption of proteins to the material surface, which is strongly governed by thermodynamic factors established by the nature of the interaction between the material surface, surrounding water molecules, and the protein itself. Along these lines, different surface materials (such as polymeric, metallic, ceramic, or composite) induce different entropic and enthalpic changes at the surface-protein interface, with material wettability significantly impacting this behavior. Consequently, protein adsorption on medical devices can be modulated by altering their wettability and surface energy. A plethora of polymeric coating modifications have been utilized for this purpose; hydrophobic modifications may promote or inhibit protein adsorption determined by van der Waals forces, while hydrophilic materials achieve this by mainly relying on hydrogen bonding, or unbalanced/balanced electrostatic interactions. This review offers a cohesive understanding of the thermodynamics governing these phenomena, to specifically aid in the design and selection of hemocompatible polymeric coatings for biomedical applications. STATEMENT OF SIGNIFICANCE: Blood-contacting medical devices often succumb to thrombosis, limiting their durability and safety in clinical applications. A plethora of polymeric coating modifications have been utilized for addressing this issue. This review offers a cohesive understanding of the thermodynamics governing these phenomena, to specifically aid in the design and selection of hemocompatible polymeric coatings for biomedical applications.
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Affiliation(s)
- Matthew Crago
- School of Chemical and Biomolecular Engineering, The University of Sydney, Darlington, NSW 2008, Australia
| | - Aeryne Lee
- School of Chemical and Biomolecular Engineering, The University of Sydney, Darlington, NSW 2008, Australia
| | - Thanh Phuong Hoang
- School of Chemical and Biomolecular Engineering, The University of Sydney, Darlington, NSW 2008, Australia
| | - Sepehr Talebian
- School of Chemical and Biomolecular Engineering, The University of Sydney, Darlington, NSW 2008, Australia.
| | - Sina Naficy
- School of Chemical and Biomolecular Engineering, The University of Sydney, Darlington, NSW 2008, Australia.
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Li Z, Giarto J, Zhang J, Kulkarni N, Mahalingam E, Klipstine W, Turng LS. Anti-thrombotic poly(AAm-co-NaAMPS)-xanthan hydrogel-expanded polytetrafluoroethylene (ePTFE) vascular grafts with enhanced endothelialization and hemocompatibility properties. BIOMATERIALS ADVANCES 2023; 154:213625. [PMID: 37722163 PMCID: PMC10841274 DOI: 10.1016/j.bioadv.2023.213625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 08/23/2023] [Accepted: 09/12/2023] [Indexed: 09/20/2023]
Abstract
Cardiovascular diseases (CVDs) are the leading cause of death among all non-communicable diseases globally. Although expanded polytetrafluoroethylene (ePTFE) has been widely used for larger-diameter vascular graft transplantation, the persistent thrombus formation and intimal hyperplasia of small-diameter vascular grafts (SDVGs) made of ePTFE to treat severe CVDs remain the biggest challenges due to lack of biocompatibility and endothelium. In this study, bi-layered poly(acrylamide-co-2-Acrylamido-2-methyl-1-propanesulfonic acid sodium)-xanthan hydrogel-ePTFE (poly(AAm-co-NaAMPS)-xanthan hydrogel-ePTFE) vascular grafts capable of promoting endothelialization and prohibiting thrombosis were synthesized and fabricated. While the external ePTFE layer of the vascular grafts provided the mechanical stability, the inner hydrogel layer offered much-needed cytocompatibility, hemocompatibility, and endothelialization functions. The interface morphology between the inner hydrogel layer and the outer ePTFE layer was observed by scanning electron microscope (SEM), which revealed that the hydrogel was well attached to the porous ePTFE through mechanical interlocking. Among all the hydrogel compositions tested with cell culture using human umbilical vein endothelial cells (HUVECs), the hydrogel with the molar ratio of 40:60 (NaAMPS/AAm) composition (i.e., Hydrogel 40:60) exhibited the best endothelialization function, as it produced the largest endothelialization area that was three times more than of that of plain ePTFE on day 14, maintained the highest average cell viability, and had the best cell morphology. Hydrogel 40:60 also showed excellent hemocompatibility, prolonged activated partial thromboplastin time (aPTT), and good mechanical properties. Overall, bi-layered poly(AAm-co-NaAMPS)-xanthan hydrogel-ePTFE vascular grafts with the Hydrogel 40:60 composition could potentially solve the critical challenge of thrombus formation in vascular graft transplantation applications.
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Affiliation(s)
- Zhutong Li
- Department of Mechanical Engineering, University of Wisconsin-Madison, Madison, WI 53706, USA; Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, WI 53715, USA
| | - Joshua Giarto
- Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, WI 53715, USA; Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Jue Zhang
- Morgridge Institute for Research, University of Wisconsin-Madison, Madison, WI 53715, USA
| | - Neha Kulkarni
- Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, WI 53715, USA; Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Esha Mahalingam
- Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, WI 53715, USA; College of Letters and Science, University of Wisconsin-Madison, Madison, WI, 53706, USA
| | - Will Klipstine
- Department of Mechanical Engineering, University of Wisconsin-Madison, Madison, WI 53706, USA; Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, WI 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, WI 53715, USA; Department of Mechanical Engineering, Chang Gung University, Tao-Yuan 33302, Taiwan.
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Ma W, Liu X, Yang M, Hong Q, Meng L, Zhang Q, Chen J, Pan C. Fabrication of CO-releasing surface to enhance the blood compatibility and endothelialization of TiO 2 nanotubes on titanium surface. BIOMATERIALS ADVANCES 2023; 149:213393. [PMID: 36966654 DOI: 10.1016/j.bioadv.2023.213393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Revised: 03/10/2023] [Accepted: 03/15/2023] [Indexed: 05/02/2023]
Abstract
Although the construction of nanotube arrays with the micro-nano structures on the titanium surfaces has demonstrated a great promise in the field of blood-contacting materials and devices, the limited surface hemocompatibility and delayed endothelial healing should be further improved. Carbon monoxide (CO) gas signaling molecule within the physiological concentrations has excellent anticoagulation and the ability to promote endothelial growth, exhibiting the great potential for the blood-contact biomaterials, especially the cardiovascular devices. In this study, the regular titanium dioxide nanotube arrays were firstly prepared in situ on the titanium surface by anodic oxidation, followed by the immobilization of the complex of sodium alginate/carboxymethyl chitosan (SA/CS) on the self-assembled modified nanotube surface, the CO-releasing molecule (CORM-401) was finally grafted onto the surface to create a CO-releasing bioactive surface to enhance the biocompatibility. The results of scanning electron microscopy (SEM), X-ray energy dispersion spectroscopy (EDS), and X-ray photoelectron spectroscopy (XPS) revealed that the CO-releasing molecules were successfully immobilized on the surface. The modified nanotube arrays not only exhibited excellent hydrophilicity but also could slowly release CO gas molecules, and the amount of CO release increased when cysteine was added. Furthermore, the nanotube array can promote albumin adsorption while inhibit fibrinogen adsorption to some extent, demonstrating its selective albumin adsorption; although this effect was somewhat reduced by the introduction of CORM-401, it can be significantly enhanced by the catalytic release of CO. The results of hemocompatibility and endothelial cell growth behaviors showed that, as compared with the CORM-401 modified sample, although the SA/CS-modified sample had better biocompatibility, in the case of cysteine-catalyzed CO release, the released CO could not only reduce the platelet adhesion and activation as well as hemolysis rate, but also promote endothelial cell adhesion and proliferation as well as vascular endothelial growth factor (VEGF) and nitric oxide (NO) expression. As a result, the research of the present study demonstrated that the releasing CO from TiO2 nanotubes can simultaneously enhance the surface hemocompatibility and endothelialization, which could open a new route to enhance the biocompatibility of the blood-contacting materials and devices, such as the artificial heart valve and cardiovascular stents.
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Affiliation(s)
- Wenfu Ma
- Faculty of Mechanical and Material Engineering, Jiangsu Provincial Engineering Research Center for Biomaterials and Advanced Medical Devices, Huaiyin Institute of Technology, Huai'an 223003, China
| | - Xuhui Liu
- The Affiliated Huai'an Hospital of Xuzhou Medical University, Huai'an 223003, China
| | - Minhui Yang
- Faculty of Mechanical and Material Engineering, Jiangsu Provincial Engineering Research Center for Biomaterials and Advanced Medical Devices, Huaiyin Institute of Technology, Huai'an 223003, China
| | - Qingxiang Hong
- Faculty of Mechanical and Material Engineering, Jiangsu Provincial Engineering Research Center for Biomaterials and Advanced Medical Devices, Huaiyin Institute of Technology, Huai'an 223003, China
| | - Lingjie Meng
- Faculty of Mechanical and Material Engineering, Jiangsu Provincial Engineering Research Center for Biomaterials and Advanced Medical Devices, Huaiyin Institute of Technology, Huai'an 223003, China
| | - Qiuyang Zhang
- Faculty of Mechanical and Material Engineering, Jiangsu Provincial Engineering Research Center for Biomaterials and Advanced Medical Devices, Huaiyin Institute of Technology, Huai'an 223003, China.
| | - Jie Chen
- Faculty of Mechanical and Material Engineering, Jiangsu Provincial Engineering Research Center for Biomaterials and Advanced Medical Devices, Huaiyin Institute of Technology, Huai'an 223003, China
| | - Changjiang Pan
- Faculty of Mechanical and Material Engineering, Jiangsu Provincial Engineering Research Center for Biomaterials and Advanced Medical Devices, Huaiyin Institute of Technology, Huai'an 223003, China.
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Diaz-Castrillon CE, Castro-Medina M, Viegas M, Lewis J, Hyzny E, Tarun S, Da Fonseca Da Silva L, Morell V. Anatomic Position and Durability of Polytetrafluoroethylene Conduit ≥18 mm: Single-Center Experience. Ann Thorac Surg 2023; 115:983-989. [PMID: 35988739 DOI: 10.1016/j.athoracsur.2022.08.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 07/14/2022] [Accepted: 08/01/2022] [Indexed: 11/19/2022]
Abstract
BACKGROUND Conduit longevity after right ventricular outflow tract (RVOT) reconstruction is determined by the interaction of different factors. We evaluated the relationship between conduit anatomic position and long-term durability among ≥18 mm polytetrafluoroethylene (PTFE) conduits. METHODS A single-institution RVOT reconstructions using a PTFE conduit ≥18 mm were identified. Catheter-based interventions or the need for conduit replacement were comparatively assessed between orthotopic vs heterotopic conduit position. Time to the first reintervention, censored by death, was compared between the groups. RESULTS A total of 102 conduits were implanted in 99 patients, with a median age of 13.2 years (interquartile range [IQR] 8.9-17.8 years), median weight of 47 kg (IQR, 29-67 kg), and body surface area of 1.4 m2 (IQR, 1-1.7 m2). Overall, 50.9% (n = 52) of conduits were placed in an orthotopic position after the Ross procedure in congenital aortic valve abnormalities (80% [n = 36]). Tetrology of Fallot in 39% (n = 18), followed by truncus arteriosus with 33% (n = 15), were the most common in the heterotopic position. Trileaflet configuration was similar (67% vs 69%; P = .32) between the groups. Survival free from reintervention was 91% (95% CI, 79-97) and 88% (95% CI, 71-95) in the orthotopic and the heterotopic group, respectively, at 5 years, without differences in the Kaplan Meier curves (log-rank >.05). CONCLUSIONS RVOT reconstruction with PTFE conduits ≥ 8 mm showed >90% conduit survival free from replacement in our cohort at 5 years. The anatomic position of the PTFE conduit does not seem to impact intermediate durability.
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Affiliation(s)
- Carlos E Diaz-Castrillon
- Division of Pediatric Cardiac Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Mario Castro-Medina
- Division of Pediatric Cardiac Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania.
| | - Melita Viegas
- Division of Pediatric Cardiac Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | | | - Eric Hyzny
- University of Pittsburgh, Pittsburgh, Pennsylvania
| | | | | | - Victor Morell
- Division of Pediatric Cardiac Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
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Gregory DA, Fricker ATR, Mitrev P, Ray M, Asare E, Sim D, Larpnimitchai S, Zhang Z, Ma J, Tetali SSV, Roy I. Additive Manufacturing of Polyhydroxyalkanoate-Based Blends Using Fused Deposition Modelling for the Development of Biomedical Devices. J Funct Biomater 2023; 14:jfb14010040. [PMID: 36662087 PMCID: PMC9865795 DOI: 10.3390/jfb14010040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 12/26/2022] [Accepted: 12/30/2022] [Indexed: 01/12/2023] Open
Abstract
In the last few decades Additive Manufacturing has advanced and is becoming important for biomedical applications. In this study we look at a variety of biomedical devices including, bone implants, tooth implants, osteochondral tissue repair patches, general tissue repair patches, nerve guidance conduits (NGCs) and coronary artery stents to which fused deposition modelling (FDM) can be applied. We have proposed CAD designs for these devices and employed a cost-effective 3D printer to fabricate proof-of-concept prototypes. We highlight issues with current CAD design and slicing and suggest optimisations of more complex designs targeted towards biomedical applications. We demonstrate the ability to print patient specific implants from real CT scans and reconstruct missing structures by means of mirroring and mesh mixing. A blend of Polyhydroxyalkanoates (PHAs), a family of biocompatible and bioresorbable natural polymers and Poly(L-lactic acid) (PLLA), a known bioresorbable medical polymer is used. Our characterisation of the PLA/PHA filament suggest that its tensile properties might be useful to applications such as stents, NGCs, and bone scaffolds. In addition to this, the proof-of-concept work for other applications shows that FDM is very useful for a large variety of other soft tissue applications, however other more elastomeric MCL-PHAs need to be used.
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Min YJ, Ganesan A, Realff MJ, Jones CW. Direct Air Capture of CO 2 Using Poly(ethyleneimine)-Functionalized Expanded Poly(tetrafluoroethylene)/Silica Composite Structured Sorbents. ACS APPLIED MATERIALS & INTERFACES 2022; 14:40992-41002. [PMID: 36047596 DOI: 10.1021/acsami.2c11143] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The rapidly increasing atmospheric CO2 concentration has driven research into the development of cost- and energy-efficient materials and processes for the direct air capture of CO2 (DAC). Solid-supported amine materials can give high CO2 uptakes and acceptable sorption kinetics, but they are generally prepared in powder forms that are likely not practically deployable in large-scale operations due to significant pressure drops associated with packed-bed gas-solid contactors. To this end, the development of effective gas-solid contactors for CO2 capture technologies is important to allow processing high flow rates of gas with low-pressure drops and high mass transfer rates. In this study, we demonstrate new laminate-supported amine CO2 sorbents based on the impregnation of low-molecular-weight, branched poly(ethyleneimine) (PEI) into an expanded poly(tetrafluoroethylene) (ePTFE) sheet matrix containing embedded silica particles to form free-standing sheets amenable to incorporation into structured gas-solid contactors. The free-standing sheets are functionalized with PEI using a highly scalable wet impregnation method. This method allowed controllable PEI distribution and enough porosity retained inside the sheets to enable practical CO2 capacities ranging from 0.4 to 1.6 mmol CO2/gsorbent under dry conditions. Reversible CO2 capacities are achieved under both dry and humid temperature swing cycles, indicating promising material stability. The specific thermal energy requirement for the regeneration based on the measured CO2 and water capacities is 287 kJ/mol CO2, where the molar ratio of water to CO2 of 3.1 is achieved using hydrophobic materials. This is the lowest molar ratio among published DAC sorbents. A larger laminate module is tested under conditions closer to larger-scale operations (linear velocities 0.03, 0.05, and 0.1 m/sec) and demonstrates a stable capacity of 0.80 CO2/gsorbent over five cycles of CO2 adsorption and steam regeneration. The PEI-impregnated ePTFE/silica composite sorbent/contactors demonstrate promising DAC performance derived from the amine-filled silica particles contained in hydrophobic ePTFE domains to reduce water sorption and its concomitant regeneration energy penalty.
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Affiliation(s)
- Youn Ji Min
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, 311 Ferst Dr, Atlanta, Georgia 30332, United States
| | - Arvind Ganesan
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, 311 Ferst Dr, Atlanta, Georgia 30332, United States
| | - Matthew J Realff
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, 311 Ferst Dr, Atlanta, Georgia 30332, United States
| | - Christopher W Jones
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, 311 Ferst Dr, Atlanta, Georgia 30332, United States
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Sun M, Elkhodiry M, Shi L, Xue Y, Abyaneh MH, Kossar AP, Giuglaris C, Carter SL, Li RL, Bacha E, Ferrari G, Kysar J, Myers K, Kalfa D. A biomimetic multilayered polymeric material designed for heart valve repair and replacement. Biomaterials 2022; 288:121756. [PMID: 36041938 PMCID: PMC9801615 DOI: 10.1016/j.biomaterials.2022.121756] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Revised: 08/02/2022] [Accepted: 08/17/2022] [Indexed: 01/03/2023]
Abstract
Materials currently used to repair or replace a heart valve are not durable. Their limited durability related to structural degeneration or thrombus formation is attributed to their inadequate mechanical properties and biocompatibility profiles. Our hypothesis is that a biostable material that mimics the structure, mechanical and biological properties of native tissue will improve the durability of these leaflets substitutes and in fine improve the patient outcome. Here, we report the development, optimization, and testing of a biomimetic, multilayered material (BMM), designed to replicate the native valve leaflets. Polycarbonate urethane and polycaprolactone have been processed as film, foam, and aligned fibers to replicate the leaflet's architecture and anisotropy, through solution casting, lyophilization, and electrospinning. Compared to the commercialized materials, our BMMs exhibited an anisotropic behavior and a closer mechanical performance to the aortic leaflets. The material exhibited superior biostability in an accelerated oxidization environment. It also displayed better resistance to protein adsorption and calcification in vitro and in vivo. These results will pave the way for a new class of advanced synthetic material with long-term durability for surgical valve repair or replacement.
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Affiliation(s)
- Mingze Sun
- Department of Surgery, Columbia University, New York, NY, USA
| | | | - Lei Shi
- Department of Mechanical Engineering, Columbia University, New York, NY, USA
| | - Yingfei Xue
- Department of Surgery, Columbia University, New York, NY, USA
| | | | | | | | | | - Richard L. Li
- Department of Mechanical Engineering, Columbia University, New York, NY, USA
| | - Emile Bacha
- Division of Cardiac, Thoracic and Vascular Surgery, Section of Pediatric and Congenital Cardiac Surgery, New-York Presbyterian - Morgan Stanley Children’s Hospital, Columbia University Irving Medical Center, New York, NY, USA
| | | | - Jeffrey Kysar
- Department of Mechanical Engineering, Columbia University, New York, NY, USA
| | - Kristin Myers
- Department of Mechanical Engineering, Columbia University, New York, NY, USA
| | - David Kalfa
- Department of Surgery, Columbia University, New York, NY, USA,Division of Cardiac, Thoracic and Vascular Surgery, Section of Pediatric and Congenital Cardiac Surgery, New-York Presbyterian - Morgan Stanley Children’s Hospital, Columbia University Irving Medical Center, New York, NY, USA,Corresponding author. Pediatric Cardiac Surgery, New-York Presbyterian - Morgan Stanley Children’s Hospital, Columbia University Medical Center, 3959 Broadway, CHN-274, New York, NY, 10032, USA. (D. Kalfa)
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9
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Shan Y, Chen G, Shi Q, Huang J, Mi Y, Zhang W, Zhang H, Jia B. Heparin/Collagen-REDV Modification of Expanded Polytetrafluoroethylene Improves Regional Anti-thrombosis and Reduces Foreign Body Reactions in Local Tissues. Front Bioeng Biotechnol 2022; 10:916931. [PMID: 35992343 PMCID: PMC9386153 DOI: 10.3389/fbioe.2022.916931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2022] [Accepted: 06/07/2022] [Indexed: 11/29/2022] Open
Abstract
Prosthetic implants of expanded polytetrafluoroethylene (ePTFE) in the cardiovascular system have a high failure rate over the long term because of thrombosis and intimal hyperplasia. Although multiple surface modification methods have been applied to improve the anti-thrombotic and in situ endothelialization abilities of ePTFE, none have delivered outstanding results in vivo. Our previous study combined heparin/collagen multilayers and REDV peptides to modify ePTFE, and the in-vitro results showed that modification ePTFE with heparin/collagen-REDV can promote the cytocompatibility and antiplatelet property. This study illustrated the physical change, selective endothelial cells capture ability, and in vivo performance in further. The physical test demonstrated that this modification improved the hydrophilicity, flexibility and strength of ePTFE. A competition experiment of co-cultured endothelial cells and vascular smooth muscle cells verified that the heparin/collagen-REDV modification had high specificity for endothelial cell capture. A rabbit animal model was constructed to evaluate the in vivo performance of modified ePTFE implanted in the right ventricular outflow tract. The results showed that heparin/collagen-REDV modification was safe, promoted endothelialization, and successfully achieved regional anti-thrombosis without influencing body-wide coagulation function. The pathologic manifestations and mRNA expression pattern in tissues in contact with modified ePTFE indicated that this modification method may reduce M2-type macrophage infiltration and the expression of genes related to immune and inflammatory responses. The heparin/collagen-REDV modification may lower the incidence of complications related to ePTFE implantation and has good prospects for clinical use.
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Affiliation(s)
| | | | | | | | | | | | | | - Bing Jia
- *Correspondence: Huifeng Zhang, ; Bing Jia,
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10
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Kakinoki S, Nishioka S, Arichi Y, Yamaoka T. Stable and direct coating of fibronectin-derived Leu-Asp-Val peptide on ePTFE using one-pot tyrosine oxidation for endothelial cell adhesion. Colloids Surf B Biointerfaces 2022; 216:112576. [PMID: 35636324 DOI: 10.1016/j.colsurfb.2022.112576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 04/30/2022] [Accepted: 05/11/2022] [Indexed: 10/18/2022]
Abstract
Expanded polytetrafluoroethylene (ePTFE) is widely used in clinical applications, such as in the manufacture of blood-contacting implantable devices, owing to its flexibility, biostability, and non-adhesiveness. Modification with peptides is an effective strategy to further improve the ePTFE function. However, the chemical stability of PTFE makes it difficult to modify with peptides. In this study, we reported a simple method for the dense and stable coating of biofunctional peptides on the ePTFE surface through the anchor sequence, Tyr-Lys-Tyr-Lys-Tyr-Lys (YK3). A peptide (YK3-LDV) incorporating the YK3 anchor and a ligand sequence for α4β1 integrin, Leu-Asp-Val (LDV), was successfully coated on ePTFE grafts through one-pot oxidation. The peptide layer constructed via YK3-LDV coating on ePTFE was stable and resistant to extensive washing by aqueous solutions of highly concentrated salts and surfactants. YK3-LDV coating promoted the in vitro adhesion of endothelial cells to ePTFE. Furthermore, YK3-LDV coating accelerated the in vivo formation of neointima-like tissue in a rat model with an ePTFE patch implanted into the carotid artery.
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Affiliation(s)
- Sachiro Kakinoki
- Faculty of Chemistry, Materials and Bioengineering, Kansai University, 3-3-35 Yamate-cho, Suita, Osaka 564-0836, Japan; Organization for Research and Development of Innovative Science and Technology, Kansai University, 3-3-35 Yamate-cho, Suita, Osaka 564-0836, Japan; Department of Biomedical Engineering, National Cerebral and Cardiovascular Center Research Institute, 6-1 Kishibe-Shimmachi, Suita, Osaka 564-8565, Japan.
| | - Satoru Nishioka
- Graduate School of Science and Engineering, Kansai University, 3-3-35 Yamate-cho, Suita, Osaka 564-0836, Japan
| | - Yuki Arichi
- Graduate School of Science and Engineering, Kansai University, 3-3-35 Yamate-cho, Suita, Osaka 564-0836, Japan
| | - Tetsuji Yamaoka
- Department of Biomedical Engineering, National Cerebral and Cardiovascular Center Research Institute, 6-1 Kishibe-Shimmachi, Suita, Osaka 564-8565, Japan
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11
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Fischer T, Tenbusch J, Möller M, Singh S. A facile method for grafting functional hydrogel films on PTFE, PVDF, and TPX polymers. SOFT MATTER 2022; 18:4315-4324. [PMID: 35621021 DOI: 10.1039/d2sm00313a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The use of polymeric materials in biomedical applications requires a judicious control of surface properties as they are directly related to cellular interactions and biocompatibility. The most desired chemical surface properties include hydrophilicity and the presence of functional groups for surface modification. In this work, we describe a method to graft a highly stable, ultra-thin, amine-functional hydrogel layer onto highly inert surfaces of poly(tetrafluoroethylene) (PTFE), poly(vinylidene fluoride) (PVDF), and poly(4-methyl-1-pentene) (PMP or TPX). Covalent grafting is realized with hydrophilic poly(vinylamine-co-acetamide)s by C-H insertion crosslinking (CHic) chemistry initiated by UV light. These polyvinylamides carry tetrafluorophenyl azide groups as photo or thermo activated binding sites and contain further free amine groups, which can be used to bind peptides such as biological ligands, polysaccharides, or other hydrogel layers. The covalently bound surface layers resist intensive Soxhlet extraction confirming the stability of the coating. Fluorescent staining verified the accessibility of free primary amine groups, which can be used for the functionalization of the surface with bioactive molecules. The coating demonstrates hydrophobic wetting behavior when conditioned in air and hydrophilic wetting behavior when conditioned in water showing the presence of loosely crosslinked polymer chains that can re-orient. We believe that the reported application of CHic for the surface modification of fluorinated polymers like PTFE and PVDF as well as TPX can form the basis for advanced biocompatible and biofunctional surface engineering.
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Affiliation(s)
- Thorsten Fischer
- DWI-Leibniz-Institute for Interactive Materials e.V., Forckenbeckstr. 50, 52056 Aachen, Germany
| | - Jan Tenbusch
- DWI-Leibniz-Institute for Interactive Materials e.V., Forckenbeckstr. 50, 52056 Aachen, Germany
| | - Martin Möller
- DWI-Leibniz-Institute for Interactive Materials e.V., Forckenbeckstr. 50, 52056 Aachen, Germany
| | - Smriti Singh
- DWI-Leibniz-Institute for Interactive Materials e.V., Forckenbeckstr. 50, 52056 Aachen, Germany
- Max-Planck-Institut für medizinische Forschung, Jahnstraße 29, 69120 Heidelberg, Germany.
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12
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Fluorine-containing bio-inert polymers: Roles of intermediate water. Acta Biomater 2022; 138:34-56. [PMID: 34700043 DOI: 10.1016/j.actbio.2021.10.027] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 10/06/2021] [Accepted: 10/18/2021] [Indexed: 12/13/2022]
Abstract
Fluorine-containing polymers are used not only in industrial processes but also in medical applications, because they exhibit excellent heat, weather, and chemical resistance. As these polymers are not easily degraded in our body, it is difficult to use them in applications that require antithrombotic properties, such as artificial blood vessels. The material used for medical applications should not only be stable in vivo, but it should also be inert to biomolecules such as proteins or cells. In this review, this property is defined as "bio-inert," and previous studies in this field are summarized. Bio-inert materials are less recognized as foreign substances by proteins or cells in the living body, and they must be covered at interfaces designed with the concept of intermediate water (IW). On the basis of this concept, we present here the current understanding of bio-inertness and unusual blood compatibility found in fluoropolymers used in biomedical applications. IW is the water that interacts with materials with moderate strength and has been quantified by a variety of analytical methods and simulations. For example, by using differential scanning calorimetry (DSC) measurements, IW was defined as water frozen at around -40°C. To consider the role of the IW, quantification methods of the hydration state of polymers are also summarized. These investigations have been conducted independently because of the conflict between hydrophobic fluorine and bio-inert properties that require hydrophilicity. In recent years, not many materials have been developed that incorporate the good points of both aspects, and their properties have seldom been linked to the hydration state. This has been critically performed now. Furthermore, fluorine-containing polymers in medical use are reviewed. Finally, this review also describes the molecular design of the recently reported fluorine-containing bio-inert polymers for controlling their hydration state. STATEMENT OF SIGNIFICANCE: A material covered with a hydration layer known as intermediate water that interacts moderately with other objects is difficult to be recognized as a foreign substance and exhibits bio-inert properties. Fluoropolymers show high durability, but conflict with bio-inert characteristics requiring hydrophilicity as these research studies have been conducted independently. On the other hand, materials that combine the advantages of both hydrophobic and hydrophilic features have been developed recently. Here, we summarize the molecular architecture and analysis methods that control intermediate water and provide a guideline for designing novel fluorine-containing bio-inert materials.
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13
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Mohd Radzali NA, Mohd Hidzir N, Abdul Rahman I, Mokhtar AK. Mechanical properties of polymeric biomaterials: Modified ePTFE using gamma irradiation. OPEN CHEM 2021. [DOI: 10.1515/chem-2021-0112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract
Evaluating the mechanical properties of expanded polytetrafluoroethylene (ePTFE) is essential to measure its resistance to permanent deformation from an applied force. These mechanical ePTFE properties must be comparable to the properties of real tissue. Various hydrophilic comonomers 2-hydroxyethyl methacrylate (HEMA), N-isopropylacrylamide (NIPAAM), and N-vinylcaprolactam were used individually for copolymerization with acrylic acid (AA) to be grafted onto ePTFE using the gamma irradiation-induced grafting method. After surface modification, the hydrophobic and mechanical properties of ePTFE were altered. The water uptake and contact angle measurement showed that the modified ePTFE was less hydrophobic (∼500%, θ < 90°) than the unmodified ePTFE (0%, θ = 140°). Moreover, the mechanical properties of ePTFE changed after the modification process due to the polymer grafted onto the ePTFE surface. The data from mechanical tests, such as Young’s modulus (74–121 MPa), ultimate tensile strength (5–9 MPa), and elongation at break (56–121%), obtained for the sample AA-co-HEMA and AA-co-NIPAAM remain within the ranges and are considered desirable for use as a biomaterial. The mechanical strength correlates well with the percentage of the grafting yield after the modification process and is dependent on the parameters used, such as irradiation dose and type of comonomer.
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Affiliation(s)
- Nur Ain Mohd Radzali
- Department of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia , 43600 Bangi , Selangor , Malaysia
- Nuclear Technology Research Centre, Faculty of Science and Technology, Universiti Kebangsaan Malaysia , 43600 Bangi , Selangor , Malaysia
| | - Norsyahidah Mohd Hidzir
- Department of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia , 43600 Bangi , Selangor , Malaysia
- Nuclear Technology Research Centre, Faculty of Science and Technology, Universiti Kebangsaan Malaysia , 43600 Bangi , Selangor , Malaysia
| | - Irman Abdul Rahman
- Department of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia , 43600 Bangi , Selangor , Malaysia
- Nuclear Technology Research Centre, Faculty of Science and Technology, Universiti Kebangsaan Malaysia , 43600 Bangi , Selangor , Malaysia
| | - Abdul Khaliq Mokhtar
- Department of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia , 43600 Bangi , Selangor , Malaysia
- Nuclear Technology Research Centre, Faculty of Science and Technology, Universiti Kebangsaan Malaysia , 43600 Bangi , Selangor , Malaysia
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14
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The new generation fibers: a review of high performance and specialty fibers. Polym Bull (Berl) 2021. [DOI: 10.1007/s00289-021-03966-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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15
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Roina Y, Auber F, Hocquet D, Herlem G. ePTFE-based biomedical devices: An overview of surgical efficiency. J Biomed Mater Res B Appl Biomater 2021; 110:302-320. [PMID: 34520627 DOI: 10.1002/jbm.b.34928] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 07/26/2021] [Accepted: 08/01/2021] [Indexed: 12/19/2022]
Abstract
Polytetrafluoroethylene (PTFE) is a ubiquitous material used for implants and medical devices in general because of its high biocompatibility and inertness: blood vessel, heart, table jawbone, nose, eyes, or abdominal wall can benefit from its properties in case of disease or injury. Its expanded version, ePTFE is an improved version of PTFE with better mechanical properties, which extends its medical applications. A material as frequently used as ePTFE with these exceptional properties deserves a review of its main uses, developments, and possibility of improvements. In this systematic review, we examined clinical trials related to ePTFE-based medical devices from the literature. Then, we excluded all trials using ePTFE as a control to test other devices. ePTFE-coated stents, hemodialysis and bypass grafts, guided bone and tissue regeneration membranes, hernia and heart repair and other devices are reviewed. The rates of success using these devices and their efficiency compared to other materials used for the same purposes are reported. ePTFE appears to be more or just as efficient compared to them. Some success rates remain low, suggesting the need of improvement ePTFE for medical applications.
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Affiliation(s)
- Yaëlle Roina
- Nanomedicine Lab EA4662, Bat. E, Université de Franche-Comté, UFR Sciences & Techniques, Besançon Cedex, France
| | - Frédéric Auber
- Nanomedicine Lab EA4662, Bat. E, Université de Franche-Comté, UFR Sciences & Techniques, Besançon Cedex, France
| | - Didier Hocquet
- Hygiène Hospitalière, UMR CNRS 6249, Université de Bourgogne Franche-Comté, Besançon, France
| | - Guillaume Herlem
- Nanomedicine Lab EA4662, Bat. E, Université de Franche-Comté, UFR Sciences & Techniques, Besançon Cedex, France
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16
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Bui HT, Khair N, Yeats B, Gooden S, James SP, Dasi LP. Transcatheter Heart Valves: A Biomaterials Perspective. Adv Healthc Mater 2021; 10:e2100115. [PMID: 34038627 DOI: 10.1002/adhm.202100115] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 04/23/2021] [Indexed: 11/11/2022]
Abstract
Heart valve disease is prevalent throughout the world, and the number of heart valve replacements is expected to increase rapidly in the coming years. Transcatheter heart valve replacement (THVR) provides a safe and minimally invasive means for heart valve replacement in high-risk patients. The latest clinical data demonstrates that THVR is a practical solution for low-risk patients. Despite these promising results, there is no long-term (>20 years) durability data on transcatheter heart valves (THVs), raising concerns about material degeneration and long-term performance. This review presents a detailed account of the materials development for THVRs. It provides a brief overview of THVR, the native valve properties, the criteria for an ideal THV, and how these devices are tested. A comprehensive review of materials and their applications in THVR, including how these materials are fabricated, prepared, and assembled into THVs is presented, followed by a discussion of current and future THVR biomaterial trends. The field of THVR is proliferating, and this review serves as a guide for understanding the development of THVs from a materials science and engineering perspective.
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Affiliation(s)
- Hieu T. Bui
- Department of Biomedical Engineering Georgia Institute of Technology 387 Technology Cir NW Atlanta GA 30313 USA
| | - Nipa Khair
- School of Advanced Materials Discovery Colorado State University 700 Meridian Ave Fort Collins CO 80523 USA
| | - Breandan Yeats
- Department of Biomedical Engineering Georgia Institute of Technology 387 Technology Cir NW Atlanta GA 30313 USA
| | - Shelley Gooden
- Department of Biomedical Engineering Georgia Institute of Technology 387 Technology Cir NW Atlanta GA 30313 USA
| | - Susan P. James
- School of Advanced Materials Discovery Colorado State University 700 Meridian Ave Fort Collins CO 80523 USA
| | - Lakshmi Prasad Dasi
- Department of Biomedical Engineering Georgia Institute of Technology 387 Technology Cir NW Atlanta GA 30313 USA
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17
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Zhang Q, He S, Zhu X, Luo H, Gama M, Peng M, Deng X, Wan Y. Heparinization and hybridization of electrospun tubular graft for improved endothelialization and anticoagulation. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 122:111861. [PMID: 33641887 DOI: 10.1016/j.msec.2020.111861] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 12/05/2020] [Accepted: 12/24/2020] [Indexed: 10/22/2022]
Abstract
Constructing biomimetic structure and immobilizing antithrombus factors are two effective methods to ensure rapid endothelialization and long-term anticoagulation for small-diameter vascular grafts. However, few literatures are available regarding simultaneous implementation of these two strategies. Herein, a nano-micro-fibrous biomimetic graft with a heparin coating was prepared via a step-by-step in situ biosynthesis method to improve potential endothelialization and anticoagulation. The 4-mm-diameter tubular graft consists of electrospun cellulose acetate (CA) microfibers and entangled bacterial nanocellulose (BNC) nanofibers with heparin coating on dual fibers. The hybridized and heparinized graft possesses suitable pore structure that facilitates endothelia cells adhesion and proliferation but prevents infiltration of fibrous tissue and blood leakage. In addition, it shows higher mechanical properties than those of bare CA and hybridized CA/BNC grafts, which match well with native blood vessels. Moreover, this dually modified graft exhibits improved blood compatibility and endothelialization over the counterparts without hybridization or heparinization according to the testing results of platelet adhesion, cell morphology, and protein expression of von Willebrand Factor. This novel graft with dual modifications shows promising as a new small-diameter vascular graft. This study provides a guidance for promoting endothelialization and blood compatibility by dual modifications of biomimetic structure and immobilized bioactive molecules.
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Affiliation(s)
- Quanchao Zhang
- Jiangxi Key Laboratory of Nanobiomaterials, Institute of Advanced Materials, East China Jiaotong University, Nanchang 330013, China
| | - Shan He
- Jiangxi Key Laboratory of Nanobiomaterials, Institute of Advanced Materials, East China Jiaotong University, Nanchang 330013, China
| | - Xiangbo Zhu
- Jiangxi Key Laboratory of Nanobiomaterials, Institute of Advanced Materials, East China Jiaotong University, Nanchang 330013, China
| | - Honglin Luo
- Jiangxi Key Laboratory of Nanobiomaterials, Institute of Advanced Materials, East China Jiaotong University, Nanchang 330013, China; School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China.
| | - Miguel Gama
- Centro de Engenharia Biológica, Universidade do Minho, Campus de Gualtar, P 4715-057 Braga, Portugal
| | - Mengxia Peng
- Jiangxi Key Laboratory of Nanobiomaterials, Institute of Advanced Materials, East China Jiaotong University, Nanchang 330013, China
| | - Xiaoyan Deng
- Jiangxi Key Laboratory of Nanobiomaterials, Institute of Advanced Materials, East China Jiaotong University, Nanchang 330013, China.
| | - Yizao Wan
- Jiangxi Key Laboratory of Nanobiomaterials, Institute of Advanced Materials, East China Jiaotong University, Nanchang 330013, China; School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China.
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18
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Mohd Hidzir N, Mohd Radzali NA, Abdul Rahman I, Shamsudin SA. Gamma irradiation-induced grafting of 2-hydroxyethyl methacrylate (HEMA) onto ePTFE for implant applications. NUCLEAR ENGINEERING AND TECHNOLOGY 2020. [DOI: 10.1016/j.net.2020.03.016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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19
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Sivkova R, Táborská J, Reparaz A, de los Santos Pereira A, Kotelnikov I, Proks V, Kučka J, Svoboda J, Riedel T, Pop-Georgievski O. Surface Design of Antifouling Vascular Constructs Bearing Biofunctional Peptides for Tissue Regeneration Applications. Int J Mol Sci 2020; 21:ijms21186800. [PMID: 32947982 PMCID: PMC7554689 DOI: 10.3390/ijms21186800] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 09/11/2020] [Accepted: 09/14/2020] [Indexed: 01/12/2023] Open
Abstract
Antifouling polymer layers containing extracellular matrix-derived peptide motifs offer promising new options for biomimetic surface engineering. In this contribution, we report the design of antifouling vascular grafts bearing biofunctional peptide motifs for tissue regeneration applications based on hierarchical polymer brushes. Hierarchical diblock poly(methyl ether oligo(ethylene glycol) methacrylate-block-glycidyl methacrylate) brushes bearing azide groups (poly(MeOEGMA-block-GMA-N3)) were grown by surface-initiated atom transfer radical polymerization (SI-ATRP) and functionalized with biomimetic RGD peptide sequences. Varying the conditions of copper-catalyzed alkyne-azide “click” reaction allowed for the immobilization of RGD peptides in a wide surface concentration range. The synthesized hierarchical polymer brushes bearing peptide motifs were characterized in detail using various surface sensitive physicochemical methods. The hierarchical brushes presenting the RGD sequences provided excellent cell adhesion properties and at the same time remained resistant to fouling from blood plasma. The synthesis of anti-fouling hierarchical brushes bearing 1.2 × 103 nmol/cm2 RGD biomimetic sequences has been adapted for the surface modification of commercially available grafts of woven polyethylene terephthalate (PET) fibers. The fiber mesh was endowed with polymerization initiator groups via aminolysis and acylation reactions optimized for the material. The obtained bioactive antifouling vascular grafts promoted the specific adhesion and growth of endothelial cells, thus providing a potential avenue for endothelialization of artificial conduits.
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20
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Liu Y, Munisso MC, Mahara A, Kambe Y, Yamaoka T. Anti-platelet adhesion and in situ capture of circulating endothelial progenitor cells on ePTFE surface modified with poly(2-methacryloyloxyethyl phosphorylcholine) (PMPC) and hemocompatible peptide 1 (HCP-1). Colloids Surf B Biointerfaces 2020; 193:111113. [DOI: 10.1016/j.colsurfb.2020.111113] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2019] [Revised: 05/04/2020] [Accepted: 05/05/2020] [Indexed: 01/02/2023]
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21
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Badv M, Bayat F, Weitz JI, Didar TF. Single and multi-functional coating strategies for enhancing the biocompatibility and tissue integration of blood-contacting medical implants. Biomaterials 2020; 258:120291. [PMID: 32798745 DOI: 10.1016/j.biomaterials.2020.120291] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 06/27/2020] [Accepted: 08/01/2020] [Indexed: 12/27/2022]
Abstract
Device-associated clot formation and poor tissue integration are ongoing problems with permanent and temporary implantable medical devices. These complications lead to increased rates of mortality and morbidity and impose a burden on healthcare systems. In this review, we outline the current approaches for developing single and multi-functional surface coating techniques that aim to circumvent the limitations associated with existing blood-contacting medical devices. We focus on surface coatings that possess dual hemocompatibility and biofunctionality features and discuss their advantages and shortcomings to providing a biocompatible and biodynamic interface between the medical implant and blood. Lastly, we outline the newly developed surface modification techniques that use lubricant-infused coatings and discuss their unique potential and limitations in mitigating medical device-associated complications.
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Affiliation(s)
- Maryam Badv
- School of Biomedical Engineering, McMaster University, Hamilton, Ontario, Canada; Department of Mechanical Engineering, McMaster University, Hamilton, Ontario, Canada
| | - Fereshteh Bayat
- School of Biomedical Engineering, McMaster University, Hamilton, Ontario, Canada
| | - Jeffrey I Weitz
- School of Biomedical Engineering, McMaster University, Hamilton, Ontario, Canada; Thrombosis & Atherosclerosis Research Institute (TaARI), Hamilton, Ontario, Canada; Department of Medicine, McMaster University, Hamilton, Ontario, Canada; Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Ontario, Canada
| | - Tohid F Didar
- School of Biomedical Engineering, McMaster University, Hamilton, Ontario, Canada; Department of Mechanical Engineering, McMaster University, Hamilton, Ontario, Canada; Institute for Infectious Disease Research (IIDR), McMaster University, Hamilton, Ontario, Canada.
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22
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Šrámková P, Zahoranová A, Kelar J, Kelar Tučeková Z, Stupavská M, Krumpolec R, Jurmanová J, Kováčik D, Černák M. Cold atmospheric pressure plasma: simple and efficient strategy for preparation of poly(2-oxazoline)-based coatings designed for biomedical applications. Sci Rep 2020; 10:9478. [PMID: 32528062 PMCID: PMC7289869 DOI: 10.1038/s41598-020-66423-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Accepted: 05/18/2020] [Indexed: 02/08/2023] Open
Abstract
Poly(2-oxazolines) (POx) are an attractive material of choice for biocompatible and bioactive coatings in medical applications. To prepare POx coatings, the plasma polymerization represents a fast and facile approach that is surface-independent. However, unfavorable factors of this method such as using the low-pressure regimes and noble gases, or poor control over the resulting surface chemistry limit its utilization. Here, we propose to overcome these drawbacks by using well-defined POx-based copolymers prepared by living cationic polymerization as a starting material. Chemically inert polytetrafluoroethylene (PTFE) is selected as a substrate due to its beneficial features for medical applications. The deposited POx layer is additionally post-treated by non-equilibrium plasma generated at atmospheric pressure. For this purpose, diffuse coplanar surface barrier discharge (DCSBD) is used as a source of "cold" homogeneous plasma, as it is operating at atmospheric pressure even in ambient air. Prepared POx coatings possess hydrophilic nature with an achieved water contact angle of 60°, which is noticeably lower in comparison to the initial value of 106° for raw PTFE. Moreover, the increased fibroblasts adhesion in comparison to raw PTFE is achieved, and the physical and biological properties of the POx-modified surfaces remain stable for 30 days.
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Affiliation(s)
- Petra Šrámková
- Department of Physical Electronics, Faculty of Science, Masaryk University, Kotlarska 2, 611 37, Brno, Czech Republic.
| | - Anna Zahoranová
- Dapartment for Biomaterials Research, Polymer Institute, Slovak Academy of Sciences, Dubravska cesta 9, 845 41, Bratislava, Slovakia
| | - Jakub Kelar
- Department of Physical Electronics, Faculty of Science, Masaryk University, Kotlarska 2, 611 37, Brno, Czech Republic
| | - Zlata Kelar Tučeková
- Department of Physical Electronics, Faculty of Science, Masaryk University, Kotlarska 2, 611 37, Brno, Czech Republic
| | - Monika Stupavská
- Department of Physical Electronics, Faculty of Science, Masaryk University, Kotlarska 2, 611 37, Brno, Czech Republic
| | - Richard Krumpolec
- Department of Physical Electronics, Faculty of Science, Masaryk University, Kotlarska 2, 611 37, Brno, Czech Republic
| | - Jana Jurmanová
- Department of Physical Electronics, Faculty of Science, Masaryk University, Kotlarska 2, 611 37, Brno, Czech Republic
| | - Dušan Kováčik
- Department of Physical Electronics, Faculty of Science, Masaryk University, Kotlarska 2, 611 37, Brno, Czech Republic
| | - Mirko Černák
- Department of Physical Electronics, Faculty of Science, Masaryk University, Kotlarska 2, 611 37, Brno, Czech Republic
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23
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Protein adsorption to poly(tetrafluoroethylene) membranes modified with grafted poly(acrylic acid) chains. Biointerphases 2020; 15:031011. [PMID: 32527100 DOI: 10.1116/6.0000137] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Protein adsorption to biomaterial surfaces is important for the function of such materials with anchorage-dependent cell adhesion requiring the presence of adsorbed proteins. The current study evaluated five solid surfaces with poly(acrylic acid) (PAA) grafted from the surface of a poly(tetrafluoroethylene) membrane with respect to the adsorption of serum albumin (SA), lactoferrin (Lf), and lysozyme (Lys) from a phosphate buffer and NaCl solution or water for specific combinations. With the use of x-ray photoelectron spectroscopy, the relative amounts and protein layer thickness were evaluated. SA adsorption was governed by ionic repulsive forces and hydrophobic interactions as evidenced from an increase in the protein adsorption at lower pH (6.5 compared to 7.4) and a correlation with surface coverage when water (pH 6.5) was used as the medium. The adsorption of Lf and Lys followed similar trends for all samples. In general, ionic attractive forces dominated and a strong correlation of increasing protein adsorption with the PAA chain length was evident. This study concluded that all surfaces appear suitable for use in biomaterial applications where tissue ingrowth is desired and that the enhanced protein adsorption in a medium with high ionic strength (e.g., biological fluid) correlates with the PAA chain length rather than the surface coverage.
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Talon I, Schneider A, Ball V, Hemmerlé J. Functionalization of PTFE Materials Using a Combination of Polydopamine and Platelet-Rich Fibrin. J Surg Res 2020; 251:254-261. [PMID: 32179278 DOI: 10.1016/j.jss.2019.11.014] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Revised: 10/01/2019] [Accepted: 11/03/2019] [Indexed: 11/17/2022]
Abstract
BACKGROUND The diaphragm, which forms a physical barrier between the thoracic and the abdominal cavities, is also the major part of the respiratory system. Congenital diaphragmatic hernia (CDH) is a malformation of that partition muscle. Expanded polytetrafluoroethylene (e-PTFE), a synthetic nondegradable biomaterial, is currently used for the repair of diaphragm defects. Indeed, this hydrophobic biomaterial does not promote rapid and dense cell colonization. Surface modifications are needed to favor or even guide cellular responses. MATERIALS AND METHODS In this context, we present here a practical and effective way of functionalization of the e-PTFE material. We investigated, by using electron microscopy, the coating with PRF (Platelet-Rich Fibrin) of PDA (Polydopamine) treated e-PTFE implant material. RESULTS We demonstrate that this straightforward chemical functionalization with PDA increases the hydrophilicity of e-PTFE and thus improves tissue integration. Then, we demonstrated that whatever the contact time between PRF and e-PTFE and the centrifugation speed, the PDA coating on the e-PTFE biomaterial promotes further biological events like cell adhesion and spreading. CONCLUSIONS Our findings clearly show that this composite coating (chemically by using PDA + biologically by using PRF) method of e-PTFE is a simple, interesting and promising way to favor tissular integration of such biomaterials.
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Affiliation(s)
- Isabelle Talon
- Institut National de la Santé et de la Recherche Médicale, UMR_S 1121, Strasbourg, France; Hôpitaux Universitaires de Strasbourg, Service de Chirurgie Pédiatrique, Strasbourg, France.
| | - Anne Schneider
- Institut National de la Santé et de la Recherche Médicale, UMR_S 1121, Strasbourg, France; Hôpitaux Universitaires de Strasbourg, Service de Chirurgie Pédiatrique, Strasbourg, France
| | - Vincent Ball
- Institut National de la Santé et de la Recherche Médicale, UMR_S 1121, Strasbourg, France
| | - Joseph Hemmerlé
- Institut National de la Santé et de la Recherche Médicale, UMR_S 1121, Strasbourg, France
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Sun W, Liu W, Wu Z, Chen H. Chemical Surface Modification of Polymeric Biomaterials for Biomedical Applications. Macromol Rapid Commun 2020; 41:e1900430. [DOI: 10.1002/marc.201900430] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Revised: 02/08/2020] [Accepted: 02/16/2020] [Indexed: 12/12/2022]
Affiliation(s)
- Wei Sun
- College of ChemistryChemical Engineering and Materials ScienceCollaborative Innovation Center for New Type Urbanization and Social Governance of Jiangsu ProvinceSoochow University Suzhou 215123 P. R. China
| | - Wenying Liu
- College of ChemistryChemical Engineering and Materials ScienceCollaborative Innovation Center for New Type Urbanization and Social Governance of Jiangsu ProvinceSoochow University Suzhou 215123 P. R. China
| | - Zhaoqiang Wu
- College of ChemistryChemical Engineering and Materials ScienceCollaborative Innovation Center for New Type Urbanization and Social Governance of Jiangsu ProvinceSoochow University Suzhou 215123 P. R. China
| | - Hong Chen
- College of ChemistryChemical Engineering and Materials ScienceCollaborative Innovation Center for New Type Urbanization and Social Governance of Jiangsu ProvinceSoochow University Suzhou 215123 P. R. China
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26
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Badv M, Weitz JI, Didar TF. Lubricant-Infused PET Grafts with Built-In Biofunctional Nanoprobes Attenuate Thrombin Generation and Promote Targeted Binding of Cells. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2019; 15:e1905562. [PMID: 31773877 DOI: 10.1002/smll.201905562] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2019] [Revised: 11/02/2019] [Indexed: 05/21/2023]
Abstract
New surface coatings that enhance hemocompatibility and biofunctionality of synthetic vascular grafts such as expanded poly(tetrafluoroethylene) (ePTFE) and poly(ethylene terephthalate) (PET) are urgently needed. Lubricant-infused surfaces prevent nontargeted adhesion and enhance the biocompatibility of blood-contacting surfaces. However, limited success has been made in incorporating biofunctionality onto these surfaces and generating biofunctional lubricant-infused coatings that both prevent nonspecific adhesion and enhance targeted binding of biomolecules remains a challenge. Here, a new generation of fluorosilanized lubricant-infused PET surfaces with built-in biofunctional nanoprobes is reported. These surfaces are synthesized by starting with a self-assembled monolayer of fluorosilane that is partially etched using plasma modification technique, thereby creating a hydroxyl-terminated fluorosilanized PET surface. Simultaneously, silanized nanoprobes are produced by amino-silanizing anti-CD34 antibody in solution and directly coupling the anti-CD34-aminosilane nanoprobes onto the hydroxyl terminated, fluorosilanized PET surface. The PET surfaces are then lubricated, creating fluorosilanized biofunctional lubricant-infused PET substrates. Compared with unmodified PET surfaces, the designed biofunctional lubricant-infused PET surfaces significantly attenuate thrombin generation and blood clot formation and promote targeted binding of endothelial cells from human whole blood.
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Affiliation(s)
- Maryam Badv
- School of Biomedical Engineering, McMaster University, 1280 Main Street West, L8S 4L8, Hamilton, Ontario, Canada
| | - Jeffrey I Weitz
- School of Biomedical Engineering, McMaster University, 1280 Main Street West, L8S 4L8, Hamilton, Ontario, Canada
- Thrombosis & Atherosclerosis Research Institute, 237 Barton Street East, L8L 2X2, Hamilton, Ontario, Canada
- Department of Medicine, McMaster University, 1280 Main Street West, L8S 4L8, Hamilton, Ontario, Canada
- Department of Biochemistry and Biomedical Sciences, McMaster University, 1280 Main Street West, L8S 4L8, Hamilton, Ontario, Canada
| | - Tohid F Didar
- School of Biomedical Engineering, McMaster University, 1280 Main Street West, L8S 4L8, Hamilton, Ontario, Canada
- Department of Mechanical Engineering, McMaster University, 1280 Main Street West, L8S 4L8, Hamilton, Ontario, Canada
- Michael G. DeGroote Institute for Infectious Disease Research (IIDR), McMaster University, 1280 Main Street West, L8S 4L8, Hamilton, Ontario, Canada
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27
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Badv M, Alonso-Cantu C, Shakeri A, Hosseinidoust Z, Weitz JI, Didar TF. Biofunctional Lubricant-Infused Vascular Grafts Functionalized with Silanized Bio-Inks Suppress Thrombin Generation and Promote Endothelialization. ACS Biomater Sci Eng 2019; 5:6485-6496. [DOI: 10.1021/acsbiomaterials.9b01062] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
| | | | | | | | - Jeffrey I. Weitz
- Thrombosis & Atherosclerosis Research Institute (TaARI), 237 Barton Street East, Hamilton, Ontario L8L 2X2, Canada
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28
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Williams DF. Specifications for Innovative, Enabling Biomaterials Based on the Principles of Biocompatibility Mechanisms. Front Bioeng Biotechnol 2019; 7:255. [PMID: 31649926 PMCID: PMC6794428 DOI: 10.3389/fbioe.2019.00255] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Accepted: 09/23/2019] [Indexed: 12/17/2022] Open
Abstract
In any engineering discipline, whenever products are designed, manufactured and ultimately utilized for the benefits of society, a series of specifications for the product are defined, and maybe refined, in order that they perform as effectively as possible, with due attention being paid to the safety, and economic aspects. These specifications are established with respect to all of the relevant properties, including those determined by mechanical, physical, chemical, manufacturing and environmental conditions, and the resulting design and materials selection reflects the optimal balance. In areas of medical technology, these specifications should be based on both functionality, which determines whether a device can actually perform as intended, and biocompatibility, which determines how the device interacts, both acutely and chronically, with the body. Unfortunately, whilst so much progress has been made with the development of superior functionality for the treatment and diagnosis of so many disease states, this is not the same for biocompatibility, where the single most-important currently adopted specification is that the device should do no harm, which falls far short of the ideal requirement. This paper addresses the profound need for biomaterials specifications to be based on the mechanisms of biocompatibility.
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Affiliation(s)
- David F. Williams
- Wake Forest Institute of Regenerative Medicine, Winston-Salem, NC, United States
- Strait Access Technologies, Cape Town, South Africa
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29
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Munisso MC, Yamaoka T. Peptide with endothelial cell affinity and antiplatelet adhesion property to improve hemocompatibility of blood‐contacting biomaterials. Pept Sci (Hoboken) 2019. [DOI: 10.1002/pep2.24114] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Maria Chiara Munisso
- Department of Biomedical EngineeringNational Cerebral and Cardiovascular Center Research Institute Suita Osaka Japan
| | - Tetsuji Yamaoka
- Department of Biomedical EngineeringNational Cerebral and Cardiovascular Center Research Institute Suita Osaka Japan
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30
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Ardila DC, Liou JJ, Maestas D, Slepian MJ, Badowski M, Wagner WR, Harris D, Vande Geest JP. Surface Modification of Electrospun Scaffolds for Endothelialization of Tissue-Engineered Vascular Grafts Using Human Cord Blood-Derived Endothelial Cells. J Clin Med 2019; 8:E185. [PMID: 30720769 PMCID: PMC6416564 DOI: 10.3390/jcm8020185] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Revised: 01/22/2019] [Accepted: 02/01/2019] [Indexed: 01/09/2023] Open
Abstract
Tissue engineering has gained attention as an alternative approach for developing small diameter tissue-engineered vascular grafts intended for bypass surgery, as an option to treat coronary heart disease. To promote the formation of a healthy endothelial cell monolayer in the lumen of the graft, polycaprolactone/gelatin/fibrinogen scaffolds were developed, and the surface was modified using thermoforming and coating with collagen IV and fibronectin. Human cord blood-derived endothelial cells (hCB-ECs) were seeded onto the scaffolds and the important characteristics of a healthy endothelial cell layer were evaluated under static conditions using human umbilical vein endothelial cells as a control. We found that polycaprolactone/gelatin/fibrinogen scaffolds that were thermoformed and coated are the most suitable for endothelial cell growth. hCB-ECs can proliferate, produce endothelial nitric oxide synthase, respond to interleukin 1 beta, and reduce platelet deposition.
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Affiliation(s)
| | - Jr-Jiun Liou
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA 15219, USA.
| | - David Maestas
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD 21231, USA.
| | - Marvin J Slepian
- Sarver Heart Center, The University of Arizona, Tucson, AZ 85721, USA.
- The Arizona Center for Accelerated BioMedical Innovation, University of Arizona, Tucson, AZ 85721, USA.
- BIO5 Institute for Biocollaborative Research, The University of Arizona, Tucson, AZ 85721, USA.
- Interventional Cardiology, University of Arizona, Tucson, AZ 85721, USA.
| | - Michael Badowski
- Arizona Health Science Center Biorepository, University of Arizona, Tucson, AZ 85724, USA.
| | - William R. Wagner
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA 15219, USA.
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA 15219, USA.
- Department of Surgery, University of Pittsburgh, Pittsburgh, PA 15219, USA.
| | - David Harris
- Arizona Health Science Center Biorepository, University of Arizona, Tucson, AZ 85724, USA.
- Department of Immunobiology, Arizona Health Science Center Biorepository, University of Arizona, Tucson, AZ 85724, USA.
| | - Jonathan P Vande Geest
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA 15219, USA.
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA 15219, USA.
- Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, PA 15219, USA.
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31
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Khalifehzadeh R, Ratner BD. Trifluoromethyl-functionalized poly(lactic acid): a fluoropolyester designed for blood contact applications. Biomater Sci 2019; 7:3764-3778. [DOI: 10.1039/c9bm00353c] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Fluorinated polymers are strong candidates for development of new cardiovascular medical devices, due to their lower thrombogenicity as compared to other polymers used for cardiovascular implants.
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Affiliation(s)
| | - Buddy D. Ratner
- Department of Chemical Engineering
- University of Washington
- Seattle
- USA
- Department of Bioengineering
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32
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Liu Y, Munisso MC, Mahara A, Kambe Y, Fukazawa K, Ishihara K, Yamaoka T. A surface graft polymerization process on chemically stable medical ePTFE for suppressing platelet adhesion and activation. Biomater Sci 2018; 6:1908-1915. [PMID: 29877532 DOI: 10.1039/c8bm00364e] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
An effective surface grafting method for chemically inert and elaborately porous medical expanded-polytetrafluoroethylene (ePTFE) was developed. Although surface graft polymerization onto basic polymeric biomaterials has been widely studied, successful modification of the ePTFE surface has been lacking due to its high chemical resistance. Herein, we succeeded in surface graft polymerization onto ePTFE through glycidyl methacrylate (GMA) as a bridge linkage following argon (Ar) plasma treatment. The epoxy group of GMA was expected to react with the peroxide groups produced on ePTFE by Ar plasma exposure, and its methacrylic groups can copolymerize with various monomers. In the present study, we selected 2-methacryloyloxyethyl phosphorylcholine (MPC) as a model monomer and the blood compatibility of modified ePTFE was evaluated. Two sequences of surface grafting were compared. In a two-step graft polymerization, GMA was first immobilized onto Ar plasma treated ePTFE, and then MPC was polymerized. In a one-step graft copolymerization, MPC and GMA were mixed and copolymerized simultaneously onto Ar plasma treated ePTFE, resulting in a poly(MPC-co-GMA) (PMG) graft surface. The roughness of the node-and-fibril structure of ePTFE was reduced by the uniform polymer layer, and the modified ePTFE had a good hydrophilic nature even after being stored in an aqueous environment for 30 days. The indispensable GMA in graft polymerization improved the surface grafting on ePTFE. The one-step and two-step graft polymerization methods could decrease the number of adhered platelets, and almost inhibit platelet activation. We concluded that graft polymerization with the GMA linker provides a novel strategy to modify the chemically inert ePTFE surfaces for functionalizing as new medical devices.
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Affiliation(s)
- Yihua Liu
- Department of Biomedical Engineering, National Cerebral and Cardiovascular Center, 5-7-1 Fujishirodai, Suita, Osaka 565-8565, Japan.
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33
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Bui HT, Friederich ARW, Li E, Prawel DA, James SP. Hyaluronan enhancement of expanded polytetrafluoroethylene cardiovascular grafts. J Biomater Appl 2018; 33:52-63. [DOI: 10.1177/0885328218776807] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Heart disease continues to be the leading cause of death in the United States. The demand for cardiovascular bypass procedures increases annually. Expanded polytetrafluoroethylene is a popular material for replacement implants, but it does have drawbacks such as high thrombogenicity and low patency, particularly in small diameter grafts. Hyaluronan, a naturally occurring polysaccharide in the human body, is known for its wound healing and anticoagulant properties. In this work, we demonstrate that treating the luminal surface of expanded polytetrafluoroethylene grafts with hyaluronan improves hemocompatibility without notably changing its mechanical properties and without significant cytotoxic effects. Surface characterization such as ATR-FTIR and contact angle goniometry demonstrates that hyaluronan treatment successfully changes the surface chemistry and increases hydrophilicity. Tensile properties such as elastic modulus, tensile strength, yield stress and ultimate strain are unchanged by hyaluronan enhancement. Durability data from flow loop studies demonstrate that hyaluronan is durable on the expanded polytetrafluoroethylene inner lumen. Hemocompatibility tests reveal that hyaluronan-treated expanded polytetrafluoroethylene reduces blood clotting and platelet activation. Together our results indicate that hyaluronan-enhanced expanded polytetrafluoroethylene is a promising candidate material for cardiovascular grafts.
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Affiliation(s)
- Hieu T Bui
- School of Biomedical Engineering, Colorado State University, Fort Collins, CO, USA
| | - Aidan RW Friederich
- School of Biomedical Engineering, Colorado State University, Fort Collins, CO, USA
- Department of Mechanical Engineering, Colorado State University, Fort Collins, CO, USA
| | - Emily Li
- Department of Biomedical Sciences, Colorado State University, Fort Collins, CO, USA
| | - David A Prawel
- School of Biomedical Engineering, Colorado State University, Fort Collins, CO, USA
- Department of Mechanical Engineering, Colorado State University, Fort Collins, CO, USA
| | - Susan P James
- School of Biomedical Engineering, Colorado State University, Fort Collins, CO, USA
- Department of Mechanical Engineering, Colorado State University, Fort Collins, CO, USA
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34
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Feng S, Zhong Z, Wang Y, Xing W, Drioli E. Progress and perspectives in PTFE membrane: Preparation, modification, and applications. J Memb Sci 2018. [DOI: 10.1016/j.memsci.2017.12.032] [Citation(s) in RCA: 106] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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35
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Expanded polytetrafluoroethylene as an auxetic material: effect of extension ratio on its structure and properties. IRANIAN POLYMER JOURNAL 2018. [DOI: 10.1007/s13726-017-0581-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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36
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Cheng B, Xing YM, Shih NC, Weng JP, Lin HC. The formulation and characterization of 3D printed grafts as vascular access for potential use in hemodialysis. RSC Adv 2018; 8:15471-15479. [PMID: 35539472 PMCID: PMC9080031 DOI: 10.1039/c8ra01583j] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Accepted: 04/06/2018] [Indexed: 11/21/2022] Open
Abstract
Arteriovenous graft (AVG) failure continues to be a life-threatening problem in haemodialysis. Graft failure can occur if the implanted graft is not well-matched to the vasculature of the patient. Likewise, stenosis often develops at the vein-graft anastomosis, contributing to thrombosis and early graft failure. To address this clinical need, a novel ink formulation comprised of ACMO/TMPTA/TMETA for 3D printing a AVG was developed (ACMO-AVG), in which the printed AVG was biocompatible and did not induce cytotoxicity. The ease of customizing the ACMO-AVG according to different requirements was demonstrated. Furthermore, the AVG displayed similar mechanical properties to the commercially available arteriovenous ePTFE graft (ePTFE-AVG). Unlike ePTFE-AVG, the ACMO-AVG displayed excellent anti-fouling characteristics because no plasma protein adsorption and platelet adhesion were detected on the luminal surfaces after 2 h of incubation. Similarly, exposure to human endothelial cells and human vascular smooth muscle cells did not result in any cell detection on the surfaces of the ACMO-AVG. Thus, the present study demonstrates a newly developed 3D printing ink formulation that can be successfully 3D printed into a clinically applicable vascular access used for haemodialysis. An arteriovenous graft that was successfully 3D printed with a novel printing ink formulation that displayed excellent mechanical and anti-fouling properties.![]()
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Affiliation(s)
- Bill Cheng
- Department of Materials Science and Engineering
- National Chiao Tung University
- Hsinchu
- Republic of China
| | - Yue-Min Xing
- Department of Materials Science and Engineering
- National Chiao Tung University
- Hsinchu
- Republic of China
| | - Nai-Chia Shih
- Department of Materials Science and Engineering
- National Chiao Tung University
- Hsinchu
- Republic of China
| | - Jen-Po Weng
- Department of Materials Science and Engineering
- National Chiao Tung University
- Hsinchu
- Republic of China
| | - Hsin-Chieh Lin
- Department of Materials Science and Engineering
- National Chiao Tung University
- Hsinchu
- Republic of China
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37
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Jin YJ, Kang S, Park P, Choi D, Kim DW, Jung D, Koh J, Jeon J, Lee M, Ham J, Seo JH, Jin HR, Lee Y. Anti-inflammatory and Antibacterial Effects of Covalently Attached Biomembrane-Mimic Polymer Grafts on Gore-Tex Implants. ACS APPLIED MATERIALS & INTERFACES 2017; 9:19161-19175. [PMID: 28557438 DOI: 10.1021/acsami.7b02696] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Expanded polytetrafluoroethylene (ePTFE), also known as Gore-Tex, is widely used as an implantable biomaterial in biomedical applications because of its favorable mechanical properties and biochemical inertness. However, infection and inflammation are two major complications with ePTFE implantations, because pathogenic bacteria can inhabit the microsized pores, without clearance by host immune cells, and the limited biocompatibility can induce foreign body reactions. To minimize these complications, we covalently grafted a biomembrane-mimic polymer, poly(2-methacryloyloxylethyl phosphorylcholine) (PMPC), by partial defluorination followed by UV-induced polymerization with cross-linkers on the ePTFE surface. PMPC grafting greatly reduced serum protein adsorption as well as fibroblast adhesion on the ePTFE surface. Moreover, the PMPC-grafted ePTFE surface exhibited a dramatic inhibition of the adhesion and growth of Staphylococcus aureus, a typical pathogenic bacterium in ePTFE implants, in the porous network. On the basis of an analysis of immune cells and inflammation-related factors, i.e., transforming growth factor-β (TGF-β) and myeloperoxidase (MPO), we confirmed that inflammation was efficiently alleviated in tissues around PMPC-grafted ePTFE plates implanted in the backs of rats. Covalent PMPC may be an effective strategy for promoting anti-inflammatory and antibacterial functions in ePTFE implants and to reduce side effects in biomedical applications of ePTFE.
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Affiliation(s)
- Young Ju Jin
- Department of Otolaryngology-Head and Neck Surgery, Seoul National University Boramae Medical Center , 5 Gil 20, Boramae-ro, Dongjak-Gu, Seoul 156-707, Republic of Korea
| | - Sunah Kang
- Department of Chemistry, College of Natural Sciences, Seoul National University , 1 Gwanak-ro, Gwanak-gu, Seoul 151-747, Republic of Korea
| | - Pona Park
- Department of Otolaryngology-Head and Neck Surgery, Seoul National University Boramae Medical Center , 5 Gil 20, Boramae-ro, Dongjak-Gu, Seoul 156-707, Republic of Korea
| | - Dongkil Choi
- Department of Chemistry, College of Natural Sciences, Seoul National University , 1 Gwanak-ro, Gwanak-gu, Seoul 151-747, Republic of Korea
| | - Dae Woo Kim
- Department of Otolaryngology-Head and Neck Surgery, Seoul National University Boramae Medical Center , 5 Gil 20, Boramae-ro, Dongjak-Gu, Seoul 156-707, Republic of Korea
| | - Dongwook Jung
- Department of Chemistry, College of Natural Sciences, Seoul National University , 1 Gwanak-ro, Gwanak-gu, Seoul 151-747, Republic of Korea
| | - Jaemoon Koh
- Department of Pathology, Seoul National University Hospital, Seoul National University College of Medicine , 101 Daehak-ro, Jongno-gu, Seoul 110-744, Republic of Korea
| | - Joohee Jeon
- Department of Chemistry, College of Natural Sciences, Seoul National University , 1 Gwanak-ro, Gwanak-gu, Seoul 151-747, Republic of Korea
| | - Myoungjin Lee
- Department of Materials Science and Engineering, Korea University , 145 Anam-ro, Seongbuk-gu, Seoul 136-701, Republic of Korea
| | - Jiyeon Ham
- Department of Chemistry, College of Natural Sciences, Seoul National University , 1 Gwanak-ro, Gwanak-gu, Seoul 151-747, Republic of Korea
| | - Ji-Hun Seo
- Department of Materials Science and Engineering, Korea University , 145 Anam-ro, Seongbuk-gu, Seoul 136-701, Republic of Korea
| | - Hong-Ryul Jin
- Department of Otolaryngology-Head and Neck Surgery, Seoul National University Boramae Medical Center , 5 Gil 20, Boramae-ro, Dongjak-Gu, Seoul 156-707, Republic of Korea
| | - Yan Lee
- Department of Chemistry, College of Natural Sciences, Seoul National University , 1 Gwanak-ro, Gwanak-gu, Seoul 151-747, Republic of Korea
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38
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Lamichhane S, Anderson JA, Vierhout T, Remund T, Sun H, Kelly P. Polytetrafluoroethylene topographies determine the adhesion, activation, and foreign body giant cell formation of macrophages. J Biomed Mater Res A 2017; 105:2441-2450. [DOI: 10.1002/jbm.a.36099] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2017] [Revised: 03/06/2017] [Accepted: 04/26/2017] [Indexed: 12/31/2022]
Affiliation(s)
- Sujan Lamichhane
- Biomedical Engineering; The University of South Dakota; 4800 N. Career Avenue Sioux Falls South Dakota 57107
| | - Jordan A. Anderson
- Biomedical Engineering; The University of South Dakota; 4800 N. Career Avenue Sioux Falls South Dakota 57107
| | - Thomas Vierhout
- Biomedical Engineering; The University of South Dakota; 4800 N. Career Avenue Sioux Falls South Dakota 57107
| | - Tyler Remund
- Sanford Research; 2301 East 60 Street North Sioux Falls South Dakota 57104
| | - Hongli Sun
- Biomedical Engineering; The University of South Dakota; 4800 N. Career Avenue Sioux Falls South Dakota 57107
| | - Patrick Kelly
- Sanford Health; 1305 West 18 Street Sioux Falls South Dakota 57105
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39
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In vitro mineralization of dual grafted polytetrafluoroethylene membranes. Biointerphases 2017; 12:02C413. [PMID: 28565915 DOI: 10.1116/1.4984012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The modification of biomaterials by radiation induced grafting is a promising method to improve their bioactivity. Successful introduction of carboxyl and amine functional groups on the surface of a polytetrafluoroethylene membrane was achieved by grafting of acrylic acid (AA) and 2-aminoethyl methacrylate hydrochloride (AEMA) using simultaneous gamma irradiation grafting. Chemical characterization by attenuated total reflectance Fourier transform infrared spectroscopy and x-ray photoelectron spectroscopy confirmed the presence of amine and carboxylate functionalities and indicated that all protonated amines formed ion pairs with carboxyl groups, but not all carboxyl are involved in ion pairing. It was found that the irradiation doses (2, 5, or 10 kGy) affected the grafting outcome only when sulfuric acid (0.5 or 0.9 M) was added as a polymerization enhancer. The use of the inorganic acid successfully enhanced the total graft yield (GY), but the changes in the graft extent (GE) were not conclusive. Dual functional films were produced by either a one- or a two-step process. Generally, higher GY and GE values were observed for the samples produced by the two-step grafting of AA and AEMA. The in vitro mineralization in 1.5× simulated body fluid (SBF) induced the formation of carbonated hydroxyapatite as verified by FITR. All samples showed an increase in weight after mineralization with significantly larger increases observed for the samples which had the 1.5× SBF changed every third day compared to every seventh. For the dual functional samples, it was found that the sample grafted by the one-step method shows a significantly higher increase in weight despite a much lower GY compared to the sample prepared by the two-step method and this was attributed to the different architecture of grafted chains.
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40
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Hidzir NM, Hill DJ, Martin D, Grøndahl L. In vitro mineralisation of grafted ePTFE membranes carrying carboxylate groups. Bioact Mater 2017; 2:27-34. [PMID: 29744408 PMCID: PMC5935022 DOI: 10.1016/j.bioactmat.2017.02.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2016] [Revised: 02/17/2017] [Accepted: 02/19/2017] [Indexed: 11/19/2022] Open
Abstract
In vitro mineralisation in simulated body fluid (SBF) of synthetic polymers continues to be an important area of research as the outcomes cannot be predicted. This study evaluates a series of ePTFE membranes grafted with carboxylate-containing copolymers, specifically using acrylic acid and itaconic acid for grafting. The samples differ with regards to graft density, carboxylate density and polymer topology. The type and amount of mineral produced in 1.5 × SBF was dependent on the sample characteristics as evident from XPS, SEM/EDX, and FTIR spectroscopy. It was found that the graft density affects the mineral phases that form and that low graft density appear to cause co-precipitation of calcium carbonate and calcium phosphate. Linear and branched graft copolymer topology led to hydroxyapatite mineralisation whereas crosslinked graft copolymers resulted in formation of a mixture of calcium-phosphate phases. This study demonstrates that in vitro mineralisation outcomes for carboxylate-containing graft copolymers are complex. The findings of this study have implications for the design of bioactive coatings and are important for understanding the bone-biomaterial interface.
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Affiliation(s)
- Norsyahidah Mohd Hidzir
- School of Chemistry and Molecular Biosciences, University of Queensland, St Lucia, QLD, 4072, Australia
| | - David J.T. Hill
- School of Chemistry and Molecular Biosciences, University of Queensland, St Lucia, QLD, 4072, Australia
| | - Darren Martin
- Australian Institute for Bioengineering and Nanotechnology, University of Queensland, St Lucia, QLD, 4072, Australia
| | - Lisbeth Grøndahl
- School of Chemistry and Molecular Biosciences, University of Queensland, St Lucia, QLD, 4072, Australia
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41
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Mallinson D, Cheung DL, Simionesie D, Mullen AB, Zhang ZJ, Lamprou DA. Experimental and computational examination of anastellin (FnIII1c)-polymer interactions. J Biomed Mater Res A 2016; 105:737-745. [DOI: 10.1002/jbm.a.35949] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Revised: 09/27/2016] [Accepted: 10/18/2016] [Indexed: 12/11/2022]
Affiliation(s)
- David Mallinson
- Strathclyde Institute of Pharmacy and Biomedical Sciences (SIPBS); University of Strathclyde; 161 Cathedral Street Glasgow United Kingdom
| | - David L. Cheung
- School of Chemistry; National University of Ireland; Galway, University Road Galway Ireland
| | - Dorin Simionesie
- School of Chemical Engineering; University of Birmingham; Edgbaston Birmingham United Kingdom
| | - Alexander B. Mullen
- Strathclyde Institute of Pharmacy and Biomedical Sciences (SIPBS); University of Strathclyde; 161 Cathedral Street Glasgow United Kingdom
| | - Zhenyu J. Zhang
- School of Chemical Engineering; University of Birmingham; Edgbaston Birmingham United Kingdom
| | - Dimitrios A. Lamprou
- Strathclyde Institute of Pharmacy and Biomedical Sciences (SIPBS); University of Strathclyde; 161 Cathedral Street Glasgow United Kingdom
- Centre for Innovative Manufacturing in Continuous Manufacturing and Crystallisation (CMAC); University of Strathclyde; Glasgow United Kingdom
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42
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Cao C, Liu L, Li Q, Chen P, Qian Q, Chen Q. Recycling and application of wasted polytetrafluoroethylene via high-energy ball milling technology for nitrile rubber composites preparation. POLYM ENG SCI 2016. [DOI: 10.1002/pen.24290] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Changlin Cao
- College of Materials Science and Engineering; Fujian Normal University; Fuzhou 350007 China
- Fujian Key Laboratory of Pollution Control and Resource Reuse; Fuzhou 350007 China
- Engineering Research Center of Polymer Green Recycling of Ministry of Education; Fuzhou 350007 China
| | - Lichao Liu
- College of Environmental Science and Engineering; Fujian Normal University; Fuzhou 350007 China
| | - Qiangpin Li
- College of Environmental Science and Engineering; Fujian Normal University; Fuzhou 350007 China
| | - Pingqin Chen
- College of Environmental Science and Engineering; Fujian Normal University; Fuzhou 350007 China
| | - Qingrong Qian
- Fujian Key Laboratory of Pollution Control and Resource Reuse; Fuzhou 350007 China
- Engineering Research Center of Polymer Green Recycling of Ministry of Education; Fuzhou 350007 China
- College of Environmental Science and Engineering; Fujian Normal University; Fuzhou 350007 China
| | - Qinghua Chen
- Fujian Key Laboratory of Pollution Control and Resource Reuse; Fuzhou 350007 China
- Engineering Research Center of Polymer Green Recycling of Ministry of Education; Fuzhou 350007 China
- College of Environmental Science and Engineering; Fujian Normal University; Fuzhou 350007 China
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43
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Kepa K, Coleman R, Grøndahl L. In vitro mineralization of functional polymers. BIOSURFACE AND BIOTRIBOLOGY 2015. [DOI: 10.1016/j.bsbt.2015.09.001] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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44
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Suzuki S, Wentrup-Byrne E, Chandler-Temple A, Shah N, Grøndahl L. Calcium ion-mediated grafting of a phosphate-containing monomer. J Appl Polym Sci 2015. [DOI: 10.1002/app.42808] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Shuko Suzuki
- School of Chemistry and Molecular Biosciences, The University of Queensland; St Lucia Queensland 4072 Australia
- School of Chemistry, Physics and Mechanical Engineering; Queensland University of Technology; Brisbane Queensland 4001 Australia
- Queensland Eye Institute; South Brisbane Queensland 4101 Australia
| | - Edeline Wentrup-Byrne
- School of Chemistry, Physics and Mechanical Engineering; Queensland University of Technology; Brisbane Queensland 4001 Australia
| | - Adrienne Chandler-Temple
- School of Chemistry and Molecular Biosciences, The University of Queensland; St Lucia Queensland 4072 Australia
| | - Nevil Shah
- School of Chemistry and Molecular Biosciences, The University of Queensland; St Lucia Queensland 4072 Australia
| | - Lisbeth Grøndahl
- School of Chemistry and Molecular Biosciences, The University of Queensland; St Lucia Queensland 4072 Australia
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45
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Bastijanic JM, Kligman FL, Marchant RE, Kottke-Marchant K. Dual biofunctional polymer modifications to address endothelialization and smooth muscle cell integration of ePTFE vascular grafts. J Biomed Mater Res A 2015; 104:71-81. [DOI: 10.1002/jbm.a.35541] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2015] [Revised: 07/10/2015] [Accepted: 07/14/2015] [Indexed: 01/02/2023]
Affiliation(s)
| | - Faina L. Kligman
- Robert J. Tomsich Pathology and Laboratory Medicine Institute, Cleveland Clinic; Cleveland Ohio
| | - Roger E. Marchant
- Department of Biomedical Engineering; Case Western Reserve University; Cleveland Ohio
| | - Kandice Kottke-Marchant
- Department of Biomedical Engineering; Case Western Reserve University; Cleveland Ohio
- Robert J. Tomsich Pathology and Laboratory Medicine Institute, Cleveland Clinic; Cleveland Ohio
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46
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Ren X, Feng Y, Guo J, Wang H, Li Q, Yang J, Hao X, Lv J, Ma N, Li W. Surface modification and endothelialization of biomaterials as potential scaffolds for vascular tissue engineering applications. Chem Soc Rev 2015; 44:5680-742. [DOI: 10.1039/c4cs00483c] [Citation(s) in RCA: 359] [Impact Index Per Article: 39.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
This review highlights the recent developments of surface modification and endothelialization of biomaterials in vascular tissue engineering applications.
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Affiliation(s)
- Xiangkui Ren
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300072
- China
- Collaborative Innovation Center of Chemical Science and Chemical Engineering (Tianjin)
| | - Yakai Feng
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300072
- China
- Collaborative Innovation Center of Chemical Science and Chemical Engineering (Tianjin)
| | - Jintang Guo
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300072
- China
- Collaborative Innovation Center of Chemical Science and Chemical Engineering (Tianjin)
| | - Haixia Wang
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300072
- China
| | - Qian Li
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300072
- China
| | - Jing Yang
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300072
- China
| | - Xuefang Hao
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300072
- China
| | - Juan Lv
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300072
- China
| | - Nan Ma
- Institute of Chemistry and Biochemistry
- Free University of Berlin
- D-14195 Berlin
- Germany
| | - Wenzhong Li
- Department of Cardiac Surgery
- University of Rostock
- D-18057 Rostock
- Germany
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47
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Roy AK, Dendooven J, Deduytsche D, Devloo-Casier K, Ragaert K, Cardon L, Detavernier C. Plasma-enhanced atomic layer deposition: a gas-phase route to hydrophilic, glueable polytetrafluoroethylene. Chem Commun (Camb) 2015; 51:3556-8. [DOI: 10.1039/c4cc09474c] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
PE-ALD functionalization of PTFE causes a permanent hydrophilic effect and a significant improvement of the “glueability” of PTFE to aluminium.
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Affiliation(s)
- Amit K. Roy
- Department of Solid State Sciences
- Faculty of Sciences
- Ghent University
- B-9000 Gent
- Belgium
| | - Jolien Dendooven
- Department of Solid State Sciences
- Faculty of Sciences
- Ghent University
- B-9000 Gent
- Belgium
| | - Davy Deduytsche
- Department of Solid State Sciences
- Faculty of Sciences
- Ghent University
- B-9000 Gent
- Belgium
| | - Kilian Devloo-Casier
- Department of Solid State Sciences
- Faculty of Sciences
- Ghent University
- B-9000 Gent
- Belgium
| | - Kim Ragaert
- Centre for Polymer and Material Technologies
- Faculty of Engineering and Architecture
- Ghent University
- B-9052 Zwijnaarde
- Belgium
| | - Ludwig Cardon
- Centre for Polymer and Material Technologies
- Faculty of Engineering and Architecture
- Ghent University
- B-9052 Zwijnaarde
- Belgium
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48
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Hidzir NM, Lee Q, Hill DJT, Rasoul F, Grøndahl L. Grafting of acrylic acid-co-itaconic acid onto ePTFE and characterization of water uptake by the graft copolymers. J Appl Polym Sci 2014. [DOI: 10.1002/app.41482] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Norsyahidah Mohd Hidzir
- School of Chemistry and Molecular Biosciences; University of Queensland; Brisbane Queensland 4072 Australia
| | - Qianhui Lee
- Australian Institute of Bioengineering and Nanotechnology; University of Queensland; Brisbane Queensland 4072 Australia
| | - David J. T. Hill
- School of Chemistry and Molecular Biosciences; University of Queensland; Brisbane Queensland 4072 Australia
| | - Firas Rasoul
- Australian Institute of Bioengineering and Nanotechnology; University of Queensland; Brisbane Queensland 4072 Australia
| | - Lisbeth Grøndahl
- School of Chemistry and Molecular Biosciences; University of Queensland; Brisbane Queensland 4072 Australia
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49
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Robust non-wetting PTFE surfaces by femtosecond laser machining. Int J Mol Sci 2014; 15:13681-96. [PMID: 25110862 PMCID: PMC4159819 DOI: 10.3390/ijms150813681] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2014] [Revised: 07/18/2014] [Accepted: 07/25/2014] [Indexed: 11/17/2022] Open
Abstract
Nature shows many examples of surfaces with extraordinary wettability,which can often be associated with particular air-trapping surface patterns. Here,robust non-wetting surfaces have been created by femtosecond laser ablation of polytetrafluoroethylene (PTFE). The laser-created surface structure resembles a forest of entangled fibers, which support structural superhydrophobicity even when the surface chemistry is changed by gold coating. SEM analysis showed that the degree of entanglement of hairs and the depth of the forest pattern correlates positively with accumulated laser fluence and can thus be influenced by altering various laser process parameters. The resulting fibrous surfaces exhibit a tremendous decrease in wettability compared to smooth PTFE surfaces; droplets impacting the virgin or gold coated PTFE forest do not wet the surface but bounce off. Exploratory bioadhesion experiments showed that the surfaces are truly air-trapping and do not support cell adhesion. Therewith, the created surfaces successfully mimic biological surfaces such as insect wings with robust anti-wetting behavior and potential for antiadhesive applications. In addition, the fabrication can be carried out in one process step, and our results clearly show the insensitivity of the resulting non-wetting behavior to variations in the process parameters,both of which make it a strong candidate for industrial applications.
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