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Melo SF, Nondonfaz A, Aqil A, Pierrard A, Hulin A, Delierneux C, Ditkowski B, Gustin M, Legrand M, Tullemans BME, Brouns SLN, Nchimi A, Carrus R, Dejosé A, Heemskerk JWM, Kuijpers MJE, Ritter J, Steinseifer U, Clauser JC, Jérôme C, Lancellotti P, Oury C. Design, manufacturing and testing of a green non-isocyanate polyurethane prosthetic heart valve. Biomater Sci 2024; 12:2149-2164. [PMID: 38487997 DOI: 10.1039/d3bm01911j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/17/2024]
Abstract
The sole effective treatment for most patients with heart valve disease is valve replacement by implantation of mechanical or biological prostheses. However, mechanical valves represent high risk of thromboembolism, and biological prostheses are prone to early degeneration. In this work, we aim to determine the potential of novel environmentally-friendly non-isocyanate polyurethanes (NIPUs) for manufacturing synthetic prosthetic heart valves. Polyhydroxyurethane (PHU) NIPUs are synthesized via an isocyanate-free route, tested in vitro, and used to produce aortic valves. PHU elastomers reinforced with a polyester mesh show mechanical properties similar to native valve leaflets. These NIPUs do not cause hemolysis. Interestingly, both platelet adhesion and contact activation-induced coagulation are strongly reduced on NIPU surfaces, indicating low thrombogenicity. Fibroblasts and endothelial cells maintain normal growth and shape after indirect contact with NIPUs. Fluid-structure interaction (FSI) allows modeling of the ideal valve design, with minimal shear stress on the leaflets. Injection-molded valves are tested in a pulse duplicator and show ISO-compliant hydrodynamic performance, comparable to clinically-used bioprostheses. Poly(tetrahydrofuran) (PTHF)-NIPU patches do not show any evidence of calcification over a period of 8 weeks. NIPUs are promising sustainable biomaterials for the manufacturing of improved prosthetic valves with low thrombogenicity.
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Affiliation(s)
- Sofia F Melo
- Laboratory of Cardiology, GIGA-Cardiovascular Sciences, University of Liège, Avenue de l'Hôpital 11, B34, 4000 Liège, Belgium.
| | - Alicia Nondonfaz
- Laboratory of Cardiology, GIGA-Cardiovascular Sciences, University of Liège, Avenue de l'Hôpital 11, B34, 4000 Liège, Belgium.
| | - Abdelhafid Aqil
- Center for Education and Research on Macromolecules (CERM), CESAM Research Unit, Department of Chemistry, University of Liège, Allée du 6 août 13, B6a, 4000 Liège, Belgium
| | - Anna Pierrard
- Center for Education and Research on Macromolecules (CERM), CESAM Research Unit, Department of Chemistry, University of Liège, Allée du 6 août 13, B6a, 4000 Liège, Belgium
| | - Alexia Hulin
- Laboratory of Cardiology, GIGA-Cardiovascular Sciences, University of Liège, Avenue de l'Hôpital 11, B34, 4000 Liège, Belgium.
| | - Céline Delierneux
- Laboratory of Cardiology, GIGA-Cardiovascular Sciences, University of Liège, Avenue de l'Hôpital 11, B34, 4000 Liège, Belgium.
| | - Bartosz Ditkowski
- Laboratory of Cardiology, GIGA-Cardiovascular Sciences, University of Liège, Avenue de l'Hôpital 11, B34, 4000 Liège, Belgium.
| | - Maxime Gustin
- Laboratory of Cardiology, GIGA-Cardiovascular Sciences, University of Liège, Avenue de l'Hôpital 11, B34, 4000 Liège, Belgium.
| | - Maxime Legrand
- Sirris, Liège Science Park, Rue du Bois Saint-Jean 12, 4102 Seraing, Belgium
| | - Bibian M E Tullemans
- Cardiovascular Research Institute Maastricht (CARIM), Department of Biochemistry, Maastricht University, Universiteitssingel 50, 6200 MD Maastricht, The Netherlands
| | - Sanne L N Brouns
- Cardiovascular Research Institute Maastricht (CARIM), Department of Biochemistry, Maastricht University, Universiteitssingel 50, 6200 MD Maastricht, The Netherlands
| | - Alain Nchimi
- Laboratory of Cardiology, GIGA-Cardiovascular Sciences, University of Liège, Avenue de l'Hôpital 11, B34, 4000 Liège, Belgium.
| | - Raoul Carrus
- Sirris, Liège Science Park, Rue du Bois Saint-Jean 12, 4102 Seraing, Belgium
| | - Astrid Dejosé
- Sirris, Liège Science Park, Rue du Bois Saint-Jean 12, 4102 Seraing, Belgium
| | - Johan W M Heemskerk
- Cardiovascular Research Institute Maastricht (CARIM), Department of Biochemistry, Maastricht University, Universiteitssingel 50, 6200 MD Maastricht, The Netherlands
| | - Marijke J E Kuijpers
- Cardiovascular Research Institute Maastricht (CARIM), Department of Biochemistry, Maastricht University, Universiteitssingel 50, 6200 MD Maastricht, The Netherlands
| | - Jan Ritter
- Department of Cardiovascular Engineering, Institute of Applied Medical Engineering, Medical Faculty RWTH Aachen University, Pauwelsstraße 20, 52074 Aachen, Germany
| | - Ulrich Steinseifer
- Department of Cardiovascular Engineering, Institute of Applied Medical Engineering, Medical Faculty RWTH Aachen University, Pauwelsstraße 20, 52074 Aachen, Germany
| | - Johanna C Clauser
- Department of Cardiovascular Engineering, Institute of Applied Medical Engineering, Medical Faculty RWTH Aachen University, Pauwelsstraße 20, 52074 Aachen, Germany
| | - Christine Jérôme
- Center for Education and Research on Macromolecules (CERM), CESAM Research Unit, Department of Chemistry, University of Liège, Allée du 6 août 13, B6a, 4000 Liège, Belgium
| | - Patrizio Lancellotti
- Laboratory of Cardiology, GIGA-Cardiovascular Sciences, University of Liège, Avenue de l'Hôpital 11, B34, 4000 Liège, Belgium.
| | - Cécile Oury
- Laboratory of Cardiology, GIGA-Cardiovascular Sciences, University of Liège, Avenue de l'Hôpital 11, B34, 4000 Liège, Belgium.
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Pierrard A, Melo SF, Thijssen Q, Van Vlierberghe S, Lancellotti P, Oury C, Detrembleur C, Jérôme C. Design of 3D-Photoprintable, Bio-, and Hemocompatible Nonisocyanate Polyurethane Elastomers for Biomedical Implants. Biomacromolecules 2024; 25:1810-1824. [PMID: 38360581 DOI: 10.1021/acs.biomac.3c01261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2024]
Abstract
Polyurethanes (PUs) have adjustable mechanical properties, making them suitable for a wide range of applications, including in the biomedical field. Historically, these PUs have been synthesized from isocyanates, which are toxic compounds to handle. This has encouraged the search for safer and more environmentally friendly synthetic routes, leading today to the production of nonisocyanate polyurethanes (NIPUs). Among these NIPUs, polyhydroxyurethanes (PHUs) bear additional hydroxyl groups, which are particularly attractive for derivatizing and adjusting their physicochemical properties. In this paper, polyether-based NIPU elastomers with variable stiffness are designed by functionalizing the hydroxyl groups of a poly(propylene glycol)-PHU by a cyclic carbonate carrying a pendant unsaturation, enabling them to be post-photo-cross-linked with polythiols (thiol-ene). Elastomers with remarkable mechanical properties whose stiffness can be adjusted are obtained. Thanks to the unique viscous properties of these PHU derivatives and their short gel times observed by rheology experiments, formulations for light-based three-dimensional (3D) printing have been developed. Objects were 3D-printed by digital light processing with a resolution down to the micrometer scale, demonstrating their ability to target various designs of prime importance for personalized medicine. In vitro biocompatibility tests have confirmed the noncytotoxicity of these materials for human fibroblasts. In vitro hemocompatibility tests have revealed that they do not induce hemolytic effects, they do not increase platelet adhesion, nor activate coagulation, demonstrating their potential for future applications in the cardiovascular field.
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Affiliation(s)
- Anna Pierrard
- Center for Education and Research on Macromolecules (CERM), CESAM Research Unit, Department of Chemistry, University of Liège, Allée du 6 août 13, Building B6a, 4000 Liège, Belgium
| | - Sofia F Melo
- GIGA Cardiovascular Sciences - Laboratory of Cardiology, University of Liège, Avenue de l'Hôpital 11, Quartier Hôpital, Building B34, 4000 Liège, Belgium
- Faculty of Medicine, University of Liège, Avenue Hippocrate 15, Quartier Hôpital, 4000 Liège, Belgium
| | - Quinten Thijssen
- Polymer Chemistry and Biomaterials Group, Centre of Macromolecular Chemistry, Ghent University, Krijgslaan 281 S4, 9000 Ghent, Belgium
| | - Sandra Van Vlierberghe
- Polymer Chemistry and Biomaterials Group, Centre of Macromolecular Chemistry, Ghent University, Krijgslaan 281 S4, 9000 Ghent, Belgium
| | - Patrizio Lancellotti
- GIGA Cardiovascular Sciences - Laboratory of Cardiology, University of Liège, Avenue de l'Hôpital 11, Quartier Hôpital, Building B34, 4000 Liège, Belgium
- Department of Cardiology - Centre Hospitalier Universitaire (CHU) of Liège, University of Liège Hospital, 4000 Liège, Belgium
| | - Cécile Oury
- GIGA Cardiovascular Sciences - Laboratory of Cardiology, University of Liège, Avenue de l'Hôpital 11, Quartier Hôpital, Building B34, 4000 Liège, Belgium
| | - Christophe Detrembleur
- Center for Education and Research on Macromolecules (CERM), CESAM Research Unit, Department of Chemistry, University of Liège, Allée du 6 août 13, Building B6a, 4000 Liège, Belgium
| | - Christine Jérôme
- Center for Education and Research on Macromolecules (CERM), CESAM Research Unit, Department of Chemistry, University of Liège, Allée du 6 août 13, Building B6a, 4000 Liège, Belgium
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Pierrard A, Aqil A, Detrembleur C, Jérôme C. Thermal and UV Curable Formulations of Poly(propylene glycol)-Poly(hydroxyurethane) Elastomers toward Nozzle-Based 3D Photoprinting. Biomacromolecules 2023; 24:4375-4384. [PMID: 36113039 DOI: 10.1021/acs.biomac.2c00860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
In this work, isocyanate-free formulations for poly(propylene glycol) polyurethane elastomers are studied. These formulations are based on poly(propylene glycol) end-capped by CO2-sourced cyclic carbonate (bisCC PPG) macromonomers able to react with amines leading to poly(hydroxyurethane)s. In order to obtain covalent networks, two curing approaches are studied. First, the direct thermally activated cross-linking of bisCC PPG with a mixture of various aliphatic or aromatic diamines and a triamine is investigated, and in particular the nature of the diamine on the mechanical properties. In the second approach, UV-activated formulations are developed by reacting bisCC PPG with allylamine followed by the addition of a trithiol by photoactivated thiol-ene reaction. The swelling tests show that both systems provide highly cross-linked polymer networks and complementary characterizations highlighted excellent mechanical properties. Thanks to the fast curing and adapted viscosity of the developed photoactive formulation, the latter was found suitable for use as a photoresin for 3D printing as demonstrated by printing a vaginal ring by a nozzle-based photoprinter.
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Affiliation(s)
- Anna Pierrard
- Center for Education and Research on Macromolecules (CERM), CESAM RU, University of Liège, Quartier Agora, Allée du six Août, 13, 4000 Liège, Belgium
| | - Abdelhafid Aqil
- Center for Education and Research on Macromolecules (CERM), CESAM RU, University of Liège, Quartier Agora, Allée du six Août, 13, 4000 Liège, Belgium
| | - Christophe Detrembleur
- Center for Education and Research on Macromolecules (CERM), CESAM RU, University of Liège, Quartier Agora, Allée du six Août, 13, 4000 Liège, Belgium
| | - Christine Jérôme
- Center for Education and Research on Macromolecules (CERM), CESAM RU, University of Liège, Quartier Agora, Allée du six Août, 13, 4000 Liège, Belgium
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Schoofs H, Vandebroek K, Pierrard A, Thonart P, Lepoivre P, Beaudry T, Deckers T. Bacteriocin Serratine-P as a biological tool in the control of fire blight Erwinia amylovora. Meded Rijksuniv Gent Fak Landbouwkd Toegep Biol Wet 2003; 67:361-8. [PMID: 12701444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 03/01/2023]
Abstract
Fire blight, caused by the bacterium Erwinia amylovora (Burill Winslow et al.), is the most important bacterial disease in European pear growing. It can cause a lot of damage in some countries on apple and on pear trees in orchards and also in the fruit tree nurseries. In Belgium, the disease is present since 1972. Control of fire blight in Belgian fruit orchards is made on a broad basis of measurements in and around the fruit trees. The use of an antibiotic is allowed for application only during the primary blossom period under strict controlled regulations. The use of antobiotics in agriculture is strongly discussed on the European level today and will probably disappear in the near future. Therefore, the research on fire blight control concentrates on the possibilities of biological control with antagonistic bacteria such as Pantoea agglomerans (Erwinia herbicola), Bacillus subtilis or Pseudomonas syringae strain A 506. The use of Serratine-P, a phage tail-like bacteriocin, produced by Serratia plymiticum, shows an interesting antibacterial activity against Erwinia amylovora. Its mode of action consists in the perforation of the cytoplasmic membrane of the target cell, inducing perturbations in cellular exchanges and a final lysis of the bacterial cell. In this paper some trials are discussed on the use of Serratine-P at different doses and on different infection types on pear trees. The results indicate interesting protection possibilities on blossom- and fruit infections.
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Affiliation(s)
- H Schoofs
- RSF-Royal Research Station of Gorsem, De Brede Akker 13, B-3800 Sint-Truiden, Belgium
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