1
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Yu Z, Liu L, Deng Y, Zhang X, Yu C. Study on the blood flow characteristics of venous needle retention with different super-hydrophobic surface structures. Med Biol Eng Comput 2023; 61:867-874. [PMID: 36627517 PMCID: PMC9918569 DOI: 10.1007/s11517-023-02767-5] [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: 08/28/2021] [Accepted: 01/03/2023] [Indexed: 01/12/2023]
Abstract
A venous retention needle, as an implanted device, is very likely to cause thrombosis. In view of the thrombosis phenomenon caused by retention needles, this paper compares the influence of different superhydrophobic surface retentions on blood flow. Compared with other superhydrophobic bulges, the fluid velocity of the four-prism bulge is the highest (0.08 m/s), and the vorticity and shear force of the hemispherical bulge are higher. A large number of vortices can inhibit thrombosis better. The tire vortices generated in the superhydrophobic convex grooves are important vortices to inhibit thrombosis. The enhancement and development of the tire vortex weakens the resistance near the wall of the needle and reduces the probability of platelet aggregation. The superhydrophobic surface structure studied in this paper can not only provide guidance for the design of venous retention needles with better performance but also provide corresponding technical support for the development of human implantation devices.
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Affiliation(s)
- Zhun Yu
- Third Affiliated Hospital to Changchun University of Chinese Medicine, Changchun, 130021 Jilin China
| | - Lei Liu
- Third Affiliated Hospital to Changchun University of Chinese Medicine, Changchun, 130021 Jilin China
| | - Yongzhi Deng
- Third Affiliated Hospital to Changchun University of Chinese Medicine, Changchun, 130021 Jilin China
| | - Xiaowen Zhang
- Third Affiliated Hospital to Changchun University of Chinese Medicine, Changchun, 130021 Jilin China
| | - Chao Yu
- Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, 130033, Jilin, China.
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2
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Xie J, Shen K, Zheng H, Yao Y, Chen Y, Gao C. Grafting of CAG peptides and (polyethylene glycol) on unsaturated polyurethane films to promote selective adhesion and migration of urethral epithelial cells. J Mater Chem B 2021; 9:6201-6211. [PMID: 34312649 DOI: 10.1039/d1tb00547b] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Selective adhesion and migration of urethral epithelial cells (HUCs) over fibroblasts (FIBs) are very important in the reconstruction of the urethral epithelial layer and prevention of ureteral scarring and stenosis. In this study, unsaturated polyurethane (PPFU-CO-SS) films were co-grafted with a cell-resisting poly(ethylene glycol) (PEG) layer and HUC-selective Cys-Ala-Gly (CAG) peptides, whose physicochemical changes were confirmed by X-ray photon spectroscopy, fluorescence spectroscopy and water contact angle measurements. The adhesion and activation of platelets on the PEG/CAG grafted surface were significantly reduced compared to those on the PPFU-CO-SS, resulting in a similar status as that on a PEG-grafted surface. The HUC-selective material could obviously promote the adhesion and migration of HUCs. The ratio of the urethral epithelial cells to fibroblasts on the PEG/CAG grafted surface was nearly 3-fold that on the unmodified PPFU-CO-SS in a co-culture competitive environment. The urethral epithelial cells cultured on the PEG/CAG grafted surface also had the highest migration rate, which was 2.24-fold compared to that on the PPFU-CO-SS control.
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Affiliation(s)
- Jieqi Xie
- Department of Polymer Science and Engineering, MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Zhejiang University, Hangzhou 310027, China.
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3
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Kim S, Ye SH, Adamo A, Orizondo RA, Jo J, Cho SK, Wagner WR. A biostable, anti-fouling zwitterionic polyurethane-urea based on PDMS for use in blood-contacting medical devices. J Mater Chem B 2020; 8:8305-8314. [PMID: 32785384 PMCID: PMC7530005 DOI: 10.1039/d0tb01220c] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Polydimethylsiloxane (PDMS) is commonly used in medical devices because it is non-toxic and stable against oxidative stress. Relatively high blood platelet adhesion and the need for chemical crosslinking through curing, however, limit its utility. In this research, a biostable PDMS-based polyurethane-urea bearing zwitterion sulfobetaine (PDMS-SB-UU) was synthesized for potential use in the fabrication or coating of blood-contacting devices, such as a conduits, artificial lungs, and microfluidic devices. The chemical structure and physical properties of synthesized PDMS-SB-UU were confirmed by 1H-nuclear magnetic resonance (1H-NMR), X-ray diffraction (XRD), and uniaxial stress-strain curve. In vitro stability of PDMS-SB-UU was confirmed against lipase and 30% H2O2 for 8 weeks, and PDMS-SB-UU demonstrated significantly higher resistance to fibrinogen adsorption and platelet deposition compared to control PDMS. Moreover, PDMS-SB-UU showed a lack of hemolysis and cytotoxicity with whole ovine blood and rat vascular smooth muscle cells (rSMCs), respectively. The PDMS-SB-UU was successfully processed into small-diameter (0.80 ± 0.05 mm) conduits by electrospinning and coated onto PDMS- and polypropylene-based blood-contacting biomaterials due to its unique physicochemical characteristics from its soft- and hard- segments.
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Affiliation(s)
- Seungil Kim
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA, USA. and Departments of Surgery, University of Pittsburgh, Pittsburgh, PA, USA
| | - Sang-Ho Ye
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA, USA. and Departments of Surgery, University of Pittsburgh, Pittsburgh, PA, USA
| | - Arianna Adamo
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA, USA. and Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties, University of Palermo, 90100 Palermo, Italy
| | - Ryan A Orizondo
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA, USA. and Departments of Bioengineering, University of Pittsburgh, Pittsburgh, PA, USA and Department of Medicine, University of Pittsburgh, Pittsburgh, PA, USA
| | - Jaehyuk Jo
- Department of Mechanical Engineering & Materials Science, University of Pittsburgh, Pittsburgh, PA, USA
| | - Sung Kwon Cho
- Department of Mechanical Engineering & Materials Science, University of Pittsburgh, Pittsburgh, PA, USA
| | - William R Wagner
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA, USA. and Departments of Surgery, University of Pittsburgh, Pittsburgh, PA, USA and Departments of Bioengineering, University of Pittsburgh, Pittsburgh, PA, USA and Departments of Chemical and Petroleum Engineering, University of Pittsburgh, Pittsburgh, PA, USA
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4
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Ding X, Chin W, Lee CN, Hedrick JL, Yang YY. Peptide-Functionalized Polyurethane Coatings Prepared via Grafting-To Strategy to Selectively Promote Endothelialization. Adv Healthc Mater 2018; 7. [PMID: 29205938 DOI: 10.1002/adhm.201700944] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2017] [Revised: 09/06/2017] [Indexed: 01/02/2023]
Abstract
Endothelialization, formation of endothelial cells (ECs) layer on cardiovascular implant surface, is considered an ideal approach to prevent restenosis (renarrowing of blood vessel mainly due to the accumulation of proliferated vascular smooth muscle cells, SMCs) and thrombosis. In this study, the possibility of using polyurethane (PU) as a coating platform for functionalization with peptide to enhance endothelialization on implants is explored. PUs are synthesized through metal-free organocatalytic polymerization followed by chemical conjugation with an EC-specific REDV peptide through thiol-ene reaction. Meanwhile, the free isocyanate groups of PU allow for covalent grafting of REDV-functionalized PU (PU/REDV) to silanize implant materials (nitinol and PET). PU/REDV coating with peptide grafting density of ≈2 nmol cm-2 selectively accommodates primary human umbilical vein ECs (HUVECs) and retards spreading of primary human umbilical artery SMCs (HUASMCs). In addition, a layer of HUVECs is formed within 3 d on PU/REDV-coated surfaces, while proliferation of HUASMCs is inhibited. The selectivity is further confirmed by coculture of HUVECs and HUASMCs. Moreover, the PU/REDV-coated surfaces are less thrombogenic as evidenced by reduced number and activity of adhered platelets. Therefore, PU/REDV can be potentially used as a coating of cardiovascular implants to prevent restenosis and thrombosis by promoting endothelialization.
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Affiliation(s)
- Xin Ding
- Institute of Bioengineering and Nanotechnology; 31 Biopolis Way, The Nanos 138669 Singapore Singapore
| | - Willy Chin
- Institute of Bioengineering and Nanotechnology; 31 Biopolis Way, The Nanos 138669 Singapore Singapore
| | - Chuen Neng Lee
- Department of Cardiac, Thoracic and Vascular Surgery; National University Hospital Singapore; 5 Lower Kent Ridge Road 119074 Singapore Singapore
- Department of Surgery; Yong Loo Lin School of Medicine; National University of Singapore; 5 Lower Kent Ridge Road 119074 Singapore Singapore
| | - James L. Hedrick
- IBM Almaden Research Center; 650 Harry Road San Jose CA 95120 USA
| | - Yi Yan Yang
- Institute of Bioengineering and Nanotechnology; 31 Biopolis Way, The Nanos 138669 Singapore Singapore
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5
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Mendes G, Faria M, Carvalho A, Gonçalves MC, de Pinho MN. Structure of water in hybrid cellulose acetate-silica ultrafiltration membranes and permeation properties. Carbohydr Polym 2018; 189:342-351. [PMID: 29580418 DOI: 10.1016/j.carbpol.2018.02.030] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Revised: 01/18/2018] [Accepted: 02/10/2018] [Indexed: 11/24/2022]
Abstract
Hybrid cellulose acetate (CA) silica (SiO2) (CA/SiO2) membranes were synthesized by promoting the in situ condensation between silanols from the SiO2 precursor and the COH or acetate groups from the CA polymer. For all the CA/SiO2 membranes, the ATR-FTIR peak assigned to (SiOC) proves the hybrid condensation reaction and confirms the synthesis of monophasic hybrid membranes. ATR-FTIR shows the presence of uncondensed highly reactive SiOH species, in membranes with silica contents higher than 20 mol%. Together with RMN studies, results show molecular water strongly hydrogen-bonded with SiOH groups, yielding a drastic decrease in the membrane hydraulic permeability, from 57 to 10 kg/h/m2/bar. The incorporation of 5 and 10 mol% of silica increased the hydraulic permeability from 32 to 82 kg/h/m2/bar when compared to the CA membrane.
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Affiliation(s)
- Gonçalo Mendes
- Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal.
| | - Mónica Faria
- Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal.
| | - Alexandra Carvalho
- IEQUALTECS, Lda. Rua Cavaleiros da Espora Dourada, n°15 2560-668 Torres Vedras, Portugal.
| | - M Clara Gonçalves
- Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal; Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Portugal.
| | - Maria Norberta de Pinho
- Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal.
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6
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Queiroz DP, Pinto IM, Besteiro MCF, Silva AFM, Gil MH, Guiomar AJ, de Pinho MN. Surface and Hemocompatibility Studies of Bi-Soft Segment Polyurethane Membranes. Int J Artif Organs 2018; 29:866-72. [PMID: 17033994 DOI: 10.1177/039139880602900908] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Cross-linked urethane/urea membranes with two soft segments were prepared by extending a poly(propylene oxide) based tri-isocyanate-terminated prepolymer (PUR) with polybutadiene diol (PBDO). The ratio of prepolymer and polybutadiene diol was varied to yield cross-linked membranes with different compositions, exhibiting different degrees of phase-separation of the PBDO segments in the bulk and of surface enrichment in PUR. In this work, surface energy and hemocompatibility aspects (hemolysis and thrombosis) of the PUR/PBDO membranes were evaluated. The results showed that the membrane surface energy increased with the PBDO content until 25% of PBDO, and decreased thereafter. The introduction of the second, more hydrophobic, soft segment (PBDO) in the PUR membranes turned hemolytic into non-hemolytic membranes and, for a blood-material contact time of 10 minutes, decreased the thrombogenicity significantly. The 10% PBDO membrane was the least thrombogenic and was also non-hemolytic. The hemolysis degree did not vary significantly with the PBDO content while, for blood-material contact times of 10 minutes, the thrombogenicity increased with an increase in PBDO content above 10%. Membrane thrombogenicity varied with the blood-material contact time. For blood contact times of 10 minutes, all membranes tested were less thrombogenic than glass.
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Affiliation(s)
- D P Queiroz
- Department of Chemical Engineering, Higher Institute of Technology, Lisbon - Portugal
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7
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Acetti D, D'arrigo P, Giordano C, Macchi P, Servi S, Tessaro D. New Aliphatic Glycerophosphoryl-Containing Polyurethanes: Synthesis, Platelet Adhesion and Elution Cytotoxicity Studies. Int J Artif Organs 2018; 32:204-12. [DOI: 10.1177/039139880903200404] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
In this study new poly(ether)urethanes (PEUs) based on aliphatic diisocyanates were synthesized with phospholipid-like residues as chain extenders. The primary objective was to prepare new polyurethanes from diisocyanates that are less toxic than the aromatic ones widely used in medical-grade polyurethanes, in order to investigate the effect of the different aromatic or aliphatic hard segment content on the final properties of the materials. Some glycerophospho residues were simultaneously introduced to enhance the hemocompatibility of these materials. Polymers were prepared by a conventional two-step solution polymerization procedure using hexamethylene diisocyanate (HDI) and dodecametilendiisocyanate (DDI) and poly(1,4-butanediol) with molecular weight 1000 to form prepolymers, which were subsequently polymerized with 1-glycerophosphorylcholine (1-GPC) or glycerophosphorylserine (GPS) to act as chain extenders. The reference polymers bearing 1,4-butandiol (BD) were also synthesized. The polymers obtained were characterized by Fourier transform infrared spectroscopy (FT-IR), nuclear magnetic resonance (1H NMR), and differential scanning calorimetry (DSC). The hemocompatibility of synthesized segmented polyurethanes was preliminarily investigated by platelet-rich plasma contact studies and related scanning electron microscopy (SEM) photographs as well as by cell viability assay after cell exposure to material elutions to assess the effect of any toxic leachables coming out from the samples. Two of the polymers gave interesting results, suggesting the desirability of further investigation into their possible use in biomedical devices.
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Affiliation(s)
- Daniela Acetti
- Dipartimento di Chimica, Materiali e Ingegneria Chimica “Giulio Natta”, Politecnico di Milano, Milan - Italy
| | - Paola D'arrigo
- Dipartimento di Chimica, Materiali e Ingegneria Chimica “Giulio Natta”, Politecnico di Milano, Milan - Italy
| | - Carmen Giordano
- Dipartimento di Chimica, Materiali e Ingegneria Chimica “Giulio Natta”, Politecnico di Milano, Milan - Italy
| | - Piero Macchi
- Departement für Chemie und Biochemie, Universität Bern, Bern - Switzerland
| | - Stefano Servi
- Dipartimento di Chimica, Materiali e Ingegneria Chimica “Giulio Natta”, Politecnico di Milano, Milan - Italy
| | - Davide Tessaro
- Dipartimento di Chimica, Materiali e Ingegneria Chimica “Giulio Natta”, Politecnico di Milano, Milan - Italy
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8
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Paluck SJ, Maynard HD. Structure Activity Relationship of Heparin Mimicking Polymer p(SS- co-PEGMA): Effect of Sulfonation and Polymer Size on FGF2-Receptor Binding. Polym Chem 2017; 8:4548-4556. [PMID: 29181096 PMCID: PMC5701782 DOI: 10.1039/c7py00861a] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Fibroblast growth factor-2 (FGF2) is a heparin binding protein that plays a role in a range of biological functions such as wound healing and bone regeneration. Heparin, a highly sulfated glycosaminoglycan, is required for FGF2 to bind to its receptor. Therefore, polymeric mimics of heparin are widely studied for their ability to manipulate FGF2-induced biological interactions. It is known that altering the degree of sulfonated monomer incorporation and size of heparin-mimicking polymers can affect protein-receptor binding. To elucidate the relationship between degree of sulfonation and receptor binding for the heparin-mimicking polymer, poly(styrene sulfonate-co-poly(ethylene glycol) methyl ether methacrylate) (p(SS-co-PEGMA)) a library was synthesized to contain nine polymers with degrees of sulfonation ranging from 0-100%. Kinetics of the polymerization was evaluated and reactivity ratios compared to literature results. These polymers were then tested for their ability to enhance FGF2 binding with its receptor as both covalent conjugates and as excipients. In a receptor based enzyme-linked immunosorbant assay (ELISA), as well as a cell-based study, the polymer with 81% SS incorporation enhanced receptor binding compared to FGF2 alone, and to a greater extent than the other polymers. Therefore, another library of polymers was prepared maintaining the degree of sulfonation at 81% and changing the size from 41 to 390 monomer repeat units. The polymers were again tested in receptor based ELISA and cell studies, and all of the different sizes performed similarly, except for degree of polymerization 295 and 390, which had reduced response in the cellular assay. These results provide important information for the use of pSS-co-PEGMA as a potential heparin-mimicking therapeutic.
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Affiliation(s)
- Samantha J Paluck
- Department of Chemistry and Biochemistry and California NanoSystems Institute, University of California, Los Angeles, 607 Charles E. Young Drive East, Los Angeles, California 90095-1569 United States
| | - Heather D Maynard
- Department of Chemistry and Biochemistry and California NanoSystems Institute, University of California, Los Angeles, 607 Charles E. Young Drive East, Los Angeles, California 90095-1569 United States
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9
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Lukas K, Stadtherr K, Gessner A, Wehner D, Schmid T, Wendel HP, Schmid C, Lehle K. Effect of Immobilized Antithrombin III on the Thromboresistance of Polycarbonate Urethane. MATERIALS 2017; 10:ma10040335. [PMID: 28772696 PMCID: PMC5506919 DOI: 10.3390/ma10040335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Revised: 02/28/2017] [Accepted: 03/21/2017] [Indexed: 11/16/2022]
Abstract
The surface of foils and vascular grafts made from a thermoplastic polycarbonate urethanes (PCU) (Chronoflex AR) were chemically modified using gas plasma treatment, binding of hydrogels—(1) polyethylene glycol bisdiamine and carboxymethyl dextran (PEG-DEX) and (2) polyethyleneimine (PEI)—and immobilization of human antithrombin III (AT). Their biological impact was tested in vitro under static and dynamic conditions. Static test methods showed a significantly reduced adhesion of endothelial cells, platelets, and bacteria, compared to untreated PCU. Modified PCU grafts were circulated in a Chandler-Loop model for 90 min at 37 °C with human blood. Before and after circulation, parameters of the hemostatic system (coagulation, platelets, complement, and leukocyte activation) were analyzed. PEI-AT significantly inhibited the activation of both coagulation and platelets and prevented the activation of leukocytes and complement. In conclusion, both modifications significantly reduce coagulation activation, but only PEI-AT creates anti-bacterial and anti-thrombogenic functionality.
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Affiliation(s)
- Karin Lukas
- IMHR, Institute for Medical Microbiology and Hygiene, University of Regensburg, Franz-Josef-Strauss-Allee 11, 93042 Regensburg, Germany.
| | - Karin Stadtherr
- IMHR, Institute for Medical Microbiology and Hygiene, University of Regensburg, Franz-Josef-Strauss-Allee 11, 93042 Regensburg, Germany.
| | - Andre Gessner
- IMHR, Institute for Medical Microbiology and Hygiene, University of Regensburg, Franz-Josef-Strauss-Allee 11, 93042 Regensburg, Germany.
| | - Daniel Wehner
- Dualis Medtech GmbH, Am Technologiepark 8+10, 82229 Seefeld, Germany.
| | - Thomas Schmid
- Dualis Medtech GmbH, Am Technologiepark 8+10, 82229 Seefeld, Germany.
| | - Hans Peter Wendel
- Department of Thoracic, Cardiac, and Vascular Surgery, University Hospital Tübingen, Hoppe-Seyler-Str. 3, 72076 Tübingen, Germany.
| | - Christof Schmid
- Department of Cardiothoracic Surgery, University Medical Center Regensburg, Josef-Strauss-Allee 11, 93042 Regensburg, Germany.
| | - Karla Lehle
- Department of Cardiothoracic Surgery, University Medical Center Regensburg, Josef-Strauss-Allee 11, 93042 Regensburg, Germany.
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10
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Paluck S, Nguyen TH, Maynard HD. Heparin-Mimicking Polymers: Synthesis and Biological Applications. Biomacromolecules 2016; 17:3417-3440. [PMID: 27739666 PMCID: PMC5111123 DOI: 10.1021/acs.biomac.6b01147] [Citation(s) in RCA: 124] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Revised: 09/26/2016] [Indexed: 12/13/2022]
Abstract
Heparin is a naturally occurring, highly sulfated polysaccharide that plays a critical role in a range of different biological processes. Therapeutically, it is mostly commonly used as an injectable solution as an anticoagulant for a variety of indications, although it has also been employed in other forms such as coatings on various biomedical devices. Due to the diverse functions of this polysaccharide in the body, including anticoagulation, tissue regeneration, anti-inflammation, and protein stabilization, and drawbacks of its use, analogous heparin-mimicking materials are also widely studied for therapeutic applications. This review focuses on one type of these materials, namely, synthetic heparin-mimicking polymers. Utilization of these polymers provides significant benefits compared to heparin, including enhancing therapeutic efficacy and reducing side effects as a result of fine-tuning heparin-binding motifs and other molecular characteristics. The major types of the various polymers are summarized, as well as their applications. Because development of a broader range of heparin-mimicking materials would further expand the impact of these polymers in the treatment of various diseases, future directions are also discussed.
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Affiliation(s)
- Samantha
J. Paluck
- Department of Chemistry and
Biochemistry and the California NanoSystems Institute, University of California−Los Angeles, 607 Charles E. Young Dr East, Los Angeles, California 90095, United States
| | - Thi H. Nguyen
- Department of Chemistry and
Biochemistry and the California NanoSystems Institute, University of California−Los Angeles, 607 Charles E. Young Dr East, Los Angeles, California 90095, United States
| | - Heather D. Maynard
- Department of Chemistry and
Biochemistry and the California NanoSystems Institute, University of California−Los Angeles, 607 Charles E. Young Dr East, Los Angeles, California 90095, United States
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11
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Nair PA, Parameswaran R. Synthesis, Characterization, and Electrospinning of Calcium-Containing Polyurethane Urea. ADVANCES IN POLYMER TECHNOLOGY 2016. [DOI: 10.1002/adv.21559] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Priya A. Nair
- Biomedical Technology Wing; Sree Chitra Tirunal Institute for Medical Sciences and Technology; Poojapura Thiruvananthapuram 695 012 India
| | - Ramesh Parameswaran
- Biomedical Technology Wing; Sree Chitra Tirunal Institute for Medical Sciences and Technology; Poojapura Thiruvananthapuram 695 012 India
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12
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Perspectives on the use of biomaterials to store platelets for transfusion. Biointerphases 2016; 11:029701. [DOI: 10.1116/1.4952450] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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13
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Lukas K, Thomas U, Gessner A, Wehner D, Schmid T, Schmid C, Lehle K. Plasma functionalization of polycarbonaturethane to improve endothelialization—Effect of shear stress as a critical factor for biocompatibility control. J Biomater Appl 2016; 30:1417-28. [DOI: 10.1177/0885328215626072] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Medical devices made of polycarbonaturethane (PCU) combine excellent mechanical properties and little biological degradation, but restricted hemocompatibility. Modifications of PCU might reduce platelet adhesion and promote stable endothelialization. PCU was modified using gas plasma treatment, binding of hydrogels, and coupling of cell-active molecules (modified heparin, anti-thrombin III (ATIII), argatroban, fibronectin, laminin-nonapeptide, peptides with integrin-binding arginine-glycine-aspartic acid (RGD) motif). Biocompatibility was verified with static and dynamic cell culture techniques. Blinded analysis focused on improvement in endothelial cell (EC) adhesion/proliferation, anti-thrombogenicity, reproducible manufacturing process, and shear stress tolerance of ECs. EC adhesion and antithrombogenicity were achieved with 9/35 modifications. Additionally, 6/9 stimulated EC proliferation and 3/6 modification processes were highly reproducible for endothelialization. The latter modifications comprised immobilization of ATIII (A), polyethyleneglycole-diamine-hydrogel (E) and polyethylenimine-hydrogel connected with modified heparin (IH). Under sheer stress, only the IH modification improved EC adhesion within the graft. However, ECs did not arrange in flow direction and cell anchorage was restricted. Despite large variation in surface modification chemistry and improved EC adhesion under static culture conditions, additional introduction of shear stress foiled promising preliminary data. Therefore, biocompatibility testing required not only static tests but also usage of physiological conditions such as shear stress in the case of vascular grafts.
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Affiliation(s)
- Karin Lukas
- IMHR, Institute for Medical Microbiology and Hygiene, University of Regensburg, Regensburg, Germany
| | | | - André Gessner
- IMHR, Institute for Medical Microbiology and Hygiene, University of Regensburg, Regensburg, Germany
| | | | | | - Christof Schmid
- Department of Cardiothoracic Surgery, University Hospital Regensburg, Regensburg, Germany
| | - Karla Lehle
- Department of Cardiothoracic Surgery, University Hospital Regensburg, Regensburg, Germany
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14
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15
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Zhou H, Yu B, Xun R, Li N, Wu K, Sun H, Zhou Z. Novel temperature-sensitive and pH-sensitive polyurethane membranes: preparation and characterization. ASIA-PAC J CHEM ENG 2014. [DOI: 10.1002/apj.1862] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Hu Zhou
- Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education; School of Chemistry and Chemical Engineering, Hunan University of Science and Technology; Xiangtan 411201 China
| | - Bin Yu
- Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education; School of Chemistry and Chemical Engineering, Hunan University of Science and Technology; Xiangtan 411201 China
| | - Ruiping Xun
- Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education; School of Chemistry and Chemical Engineering, Hunan University of Science and Technology; Xiangtan 411201 China
| | - Ning Li
- Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education; School of Chemistry and Chemical Engineering, Hunan University of Science and Technology; Xiangtan 411201 China
| | - Kejian Wu
- Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education; School of Chemistry and Chemical Engineering, Hunan University of Science and Technology; Xiangtan 411201 China
| | - Hanzhou Sun
- College of Science; Central South University of Forestry and Technology; Changsha 410004 China
| | - Zhihua Zhou
- Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education; School of Chemistry and Chemical Engineering, Hunan University of Science and Technology; Xiangtan 411201 China
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Synthesis of functionalized polyurethane foam using BES chain extender for lead ion removal from aqueous solutions. J CELL PLAST 2014. [DOI: 10.1177/0021955x14559255] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Polyurethane foams functionalized with sulphonic acid groups have been found to be strong cation exchangers. This novel property of the foam was used to exchange lead (Pb2+) ions from aqueous solutions. Polyurethane foam synthesis is based on addition polymerization of an isocyanate (–NCO) with a polyol. The primary reaction is due to the reaction of the highly reactive –NCO groups of the isocyanate with the hydroxyl (–OH) groups of the polyol to form the urethane species. Toluene-2,4-diisocyanate,2,6-diisocyanate (CAS: 584-84-9) was reacted with polypropylene glycol 1200 (CAS 25322-69-4) in 2:1 molar ratio to form a linear pre polymer. The linear pre-polymer was further polymerized using N,N-bis(2-hydorxyethyl)-2-aminoethane-sulfonic acid (CAS 10191-18-1) chain extender. An organotin catalyst was used to accelerate the reaction and distilled water was used as a foaming agent to synthesize the functionalized polyurethane foam. The synthesized foam has an open cell content ranging from 70% to 91% and the density ranges from 160 to 432 kg/m3 depending on the foam formulation. The foam was exposed to Pb2+ solutions of known concentrations by batch process. The amount of remaining Pb2+ in the solution in parts per billion (ppb) was determined using an inductively coupled plasma mass spectrometer. The maximum Pb2+ ions exchanged per gram of the foam was measured to be 50–54 ppb from a 100 ppb Pb2+ solution over a period of 90 min. In this paper, we present the foam synthesis procedure with the design of experiments to study the effect of processing variables on the performance of this material.
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17
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Studies on Slip and Mechanical Properties of Thermoplastic Polyurethane Elastomer Containing Sulfuric Acid. ELASTOMERS AND COMPOSITES 2013. [DOI: 10.7473/ec.2013.48.4.256] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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18
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Muñoz-Muñoz F, Bucio E, Magariños B, Concheiro A, Alvarez-Lorenzo C. Temperature- and pH-sensitive IPNs grafted onto polyurethane by gamma radiation for antimicrobial drug-eluting insertable devices. J Appl Polym Sci 2013. [DOI: 10.1002/app.39992] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Franklin Muñoz-Muñoz
- Departamento de Fisicoquímica de Nanomateriales, Centro de Nanociencias y Nanotecnología; Universidad Nacional Autónoma de México; Km. 107 Carretera Tijuana-Ensenada Mexico
| | - Emilio Bucio
- Departamento de Química de Radiaciones y Radioquímica; Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, Ciudad Universitaria; 04510 Mexico DF Mexico
| | - Beatriz Magariños
- Departamento de Microbiología y Parasitología, Facultad de Biología CIBUS; Universidad de Santiago de Compostela; 15782-Santiago de Compostela Spain
| | - Angel Concheiro
- Departamento de Farmacia y Tecnología Farmacéutica, Facultad de Farmacia; Universidad de Santiago de Compostela; 15782-Santiago de Compostela Spain
| | - Carmen Alvarez-Lorenzo
- Departamento de Farmacia y Tecnología Farmacéutica, Facultad de Farmacia; Universidad de Santiago de Compostela; 15782-Santiago de Compostela Spain
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Hemocompatible surface of electrospun nanofibrous scaffolds by ATRP modification. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2013; 33:3644-51. [DOI: 10.1016/j.msec.2013.04.048] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2012] [Revised: 03/28/2013] [Accepted: 04/24/2013] [Indexed: 12/26/2022]
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20
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Yang J, Lv J, Behl M, Lendlein A, Yang D, Zhang L, Shi C, Guo J, Feng Y. Functionalization of Polycarbonate Surfaces by Grafting PEG and Zwitterionic Polymers with a Multicomb Structure. Macromol Biosci 2013; 13:1681-8. [DOI: 10.1002/mabi.201300264] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2013] [Revised: 08/14/2013] [Indexed: 11/08/2022]
Affiliation(s)
- Jing Yang
- School of Chemical Engineering and Technology; Tianjin University; Weijin Road 92 Tianjin 300072 China
| | - Juan Lv
- School of Chemical Engineering and Technology; Tianjin University; Weijin Road 92 Tianjin 300072 China
| | - Marc Behl
- Tianjin University-Helmholtz-Zentrum Geesthacht, Joint Laboratory for Biomaterials and Regenerative Medicine; Weijin Road 92 300072 Tianjin China, and Kantstr. 55, 14513 Teltow Germany
- Institute of Biomaterial Science and Berlin-Brandenburg Center for Regenerative Therapies (BCRT); Helmholtz-Zentrum Geesthacht, Kantstr. 55 14513 Teltow Germany
| | - Andreas Lendlein
- Tianjin University-Helmholtz-Zentrum Geesthacht, Joint Laboratory for Biomaterials and Regenerative Medicine; Weijin Road 92 300072 Tianjin China, and Kantstr. 55, 14513 Teltow Germany
- Institute of Biomaterial Science and Berlin-Brandenburg Center for Regenerative Therapies (BCRT); Helmholtz-Zentrum Geesthacht, Kantstr. 55 14513 Teltow Germany
| | - Dazhi Yang
- School of Chemical Engineering and Technology; Tianjin University; Weijin Road 92 Tianjin 300072 China
| | - Li Zhang
- School of Chemical Engineering and Technology; Tianjin University; Weijin Road 92 Tianjin 300072 China
| | - Changcan Shi
- School of Chemical Engineering and Technology; Tianjin University; Weijin Road 92 Tianjin 300072 China
| | - Jintang Guo
- School of Chemical Engineering and Technology; Tianjin University; Weijin Road 92 Tianjin 300072 China
- Tianjin University-Helmholtz-Zentrum Geesthacht, Joint Laboratory for Biomaterials and Regenerative Medicine; Weijin Road 92 300072 Tianjin China, and Kantstr. 55, 14513 Teltow Germany
| | - Yakai Feng
- School of Chemical Engineering and Technology; Tianjin University; Weijin Road 92 Tianjin 300072 China
- Tianjin University-Helmholtz-Zentrum Geesthacht, Joint Laboratory for Biomaterials and Regenerative Medicine; Weijin Road 92 300072 Tianjin China, and Kantstr. 55, 14513 Teltow Germany
- Key Laboratory of Systems Bioengineering of Ministry of Education; Tianjin University; Weijin Road 92 Tianjin 300072 China
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Bhatnagar M, Parwani L, Sharma V, Ganguly J, Bhatnagar A. Exopolymers from Tolypothrix tenuis and three Anabaena sp. (Cyanobacteriaceae) as novel blood clotting agents for wound management. Carbohydr Polym 2013; 99:692-9. [PMID: 24274560 DOI: 10.1016/j.carbpol.2013.09.005] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2013] [Revised: 08/27/2013] [Accepted: 09/04/2013] [Indexed: 11/16/2022]
Abstract
Rapid initiation of clotting is critical to trauma patients. In the present study exopolymers (EPs) from four desert cyanobacteria including Tolypothrix tenuis and three species of Anabaena have been discovered as potential hemostatic biomaterials. The EPs showed reduction in activated partial thromboplastin time (APTT) and prothrombin time (PT) by 16-41% and 12-65%, respectively. Besides hastening blood clotting, the EPs could absorb 7.1-25.9 g H₂O g(-1) EP and displayed 7.1-18.1% hydrophobicity. They were noncytotoxic and biodegradable. The EP from Anabaena sp. showed strong antibacterial activity against E. coli, S. aureus and B. licheniformis. These results suggest that cyanobacteria, the microscopic phototrophs growing rapidly over simple mineral medium could prove to be a novel source of affordable hemostatic dressings for the traumatic wounds in underdeveloped and developing countries. Compositional analysis of the EPs showed them to be consisting of mainly carbohydrate (17-50%), protein (4.4-7.2%), uronic acid (4.7-9.5%) and sulphate (0.6-6.6%). Their viscometric molecular weight ranged from 539 to 3679 kDa. They were further characterized using GC-MS and FTIR.
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Affiliation(s)
- Monica Bhatnagar
- Algae Biofuel and Biomolecules Centre, Department of Microbiology, M.D.S. University, Ajmer, 305009 Rajasthan, India.
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22
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Manokruang K, Lee DS. Albumin-Conjugated pH/Thermo Responsive Poly(amino urethane) Multiblock Copolymer as an Injectable Hydrogel for Protein Delivery. Macromol Biosci 2013; 13:1195-203. [DOI: 10.1002/mabi.201300236] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2013] [Revised: 06/20/2013] [Indexed: 02/05/2023]
Affiliation(s)
- Kiattikhun Manokruang
- Faculty of Science; Department of Chemistry and Materials Science Research Center; Chiang Mai University; Chiang Mai 50200 Thailand
| | - Doo Sung Lee
- Department of Polymer Science and Chemical Engineering; Theranostic Macromolecules Research Center; Sungkyunkwan University; Suwon Gyeonggi-do 440-746 South Korea
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23
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Wang Y, Wu G, Li X, Wang Y, Gao H, Ma J. Synthesis, characterization and controlled drug release from temperature-responsive poly(ether-urethane) particles based on PEG-diisocyanates and aliphatic diols. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2013; 24:1676-91. [DOI: 10.1080/09205063.2013.792129] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Yangyun Wang
- a Key Laboratory of Functional Polymer Materials of MOE , Institute of Polymer Chemistry, Nankai University , Tianjin , 300071 , P.R. China
| | - Guolin Wu
- a Key Laboratory of Functional Polymer Materials of MOE , Institute of Polymer Chemistry, Nankai University , Tianjin , 300071 , P.R. China
| | - Xiaomeng Li
- a Key Laboratory of Functional Polymer Materials of MOE , Institute of Polymer Chemistry, Nankai University , Tianjin , 300071 , P.R. China
| | - Yinong Wang
- a Key Laboratory of Functional Polymer Materials of MOE , Institute of Polymer Chemistry, Nankai University , Tianjin , 300071 , P.R. China
| | - Hui Gao
- b School of Chemistry and Chemical Engineering , Tianjin University of Technology , Tianjin , 300191 , P.R. China
| | - Jianbiao Ma
- a Key Laboratory of Functional Polymer Materials of MOE , Institute of Polymer Chemistry, Nankai University , Tianjin , 300071 , P.R. China
- b School of Chemistry and Chemical Engineering , Tianjin University of Technology , Tianjin , 300191 , P.R. China
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Nguyen TH, Padalhin AR, Seo HS, Lee BT. A hybrid electrospun PU/PCL scaffold satisfied the requirements of blood vessel prosthesis in terms of mechanical properties, pore size, and biocompatibility. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2013; 24:1692-706. [DOI: 10.1080/09205063.2013.792642] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Thi-Hiep Nguyen
- a Department of Biomedical Engineering and Materials , College of Medicine, Soonchunhyang University , Cheonan , 330-090 , Korea
| | - Andrew R. Padalhin
- a Department of Biomedical Engineering and Materials , College of Medicine, Soonchunhyang University , Cheonan , 330-090 , Korea
| | - Hyung Seok Seo
- b Department of Exercise Prescription , Konyang University , Dahak Ro Nae-dong Non San City , Chung Nam Province , South Korea
| | - Byong-Taek Lee
- a Department of Biomedical Engineering and Materials , College of Medicine, Soonchunhyang University , Cheonan , 330-090 , Korea
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25
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Surface modification of polycarbonate urethane by covalent linkage of heparin with a PEG spacer. ACTA ACUST UNITED AC 2013. [DOI: 10.1007/s12209-013-1894-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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26
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NARITA Y, SIRITHEP W, OKAMURA Y, NAGASE Y. Syntheses and Biocompatibility of Elastomers Containing Phospholipid Polar Groups. KOBUNSHI RONBUNSHU 2013. [DOI: 10.1295/koron.70.199] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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27
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Wang A, Gao H, Sun Y, Sun YL, Yang YW, Wu G, Wang Y, Fan Y, Ma J. Temperature- and pH-responsive nanoparticles of biocompatible polyurethanes for doxorubicin delivery. Int J Pharm 2013; 441:30-9. [DOI: 10.1016/j.ijpharm.2012.12.021] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2012] [Revised: 11/20/2012] [Accepted: 12/12/2012] [Indexed: 12/31/2022]
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28
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Feng Y, Zhao H, Behl M, Lendlein A, Guo J, Yang D. Grafting of poly(ethylene glycol) monoacrylates on polycarbonateurethane by UV initiated polymerization for improving hemocompatibility. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2013; 24:61-70. [PMID: 22661245 DOI: 10.1007/s10856-012-4685-4] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2011] [Accepted: 05/16/2012] [Indexed: 06/01/2023]
Abstract
Poly(ethylene glycol) monoacrylates (PEGMAs) with a molecular weight between 400 and 1,000 g mol(-1) were grafted by ultraviolet initiated photopolymerization on the surface of polycarbonateurethane (PCU) for increasing its hydrophilicity and improving its hemocompatibility. The surface-grafted PCU films were characterized by Fourier transformation infrared spectroscopy, X-ray photoelectron spectroscopy, water contact angle, scanning electron microscopy (SEM) and atomic force microscopy measurements. The surface properties of the modified films were studied in dry and wetted state. Blood compatibility of the surfaces was evaluated by platelet adhesion tests and adhered platelets were determined by SEM. The results showed that the hydrophilicity of the films had been increased significantly by grafting PEGMAs, and platelets adhesion onto the film surface was obviously suppressed. Furthermore, the molecular weight of PEGMAs had a great effect on the hydrophilicity and hemocompatibility of the PCU films after surface modification and increased with increasing molecular weight of PEGMAs.
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Affiliation(s)
- Yakai Feng
- Key Laboratory of Systems Bioengineering, Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, China.
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29
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Yang HY, Zhang XM, Duan LJ, Zhang MY, Gao GH, Zhang HX. Environmental pH-responsive fluorescent PEG-polyurethane for potential optical imaging. J Appl Polym Sci 2012. [DOI: 10.1002/app.38880] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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30
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Alibeik S, Sheardown H, Rizkalla AS, Mequanint K. Protein adsorption and platelet adhesion onto ion-containing polyurethanes. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2012; 18:1195-210. [DOI: 10.1163/156856207781554055] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- Sara Alibeik
- a Biomedical Engineering Graduate Program, University of Western Ontario, London, ON, Canada N6A 5B9
| | - Heather Sheardown
- b Department of Chemical Engineering, McMaster University, 1280 Main St. W., Hamilton, ON, Canada L8S 4L7; Department of Pathology and Molecular Medicine, McMaster University, Hamilton, ON, Canada
| | - Amin S. Rizkalla
- c Biomedical Engineering Graduate Program, University of Western Ontario, London, ON, Canada N6A 5B9; Department of Chemical and Biochemical Engineering, University of Western Ontario, London, ON, Canada N6A 5B9; Division of Biomaterials Science, Schulich School of Medicine & Dentistry, University of Western Ontario, London, ON, Canada N6A 5C1
| | - Kibret Mequanint
- d Biomedical Engineering Graduate Program, University of Western Ontario, London, ON, Canada N6A 5B9; Department of Chemical and Biochemical Engineering, University of Western Ontario, London, ON, Canada N6A 5B9
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Poussard L, Burel F, Couvercelle JP, Lesouhaitier O, Merhi Y, Tabrizian M, Bunel C. In vitro thrombogenicity investigation of new water-dispersible polyurethane anionomers bearing carboxylate groups. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2012; 16:335-51. [PMID: 15850288 DOI: 10.1163/1568562053654112] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
New segmented polyurethane (PU) anionomers based on hydroxytelechelic polybutadiene were synthesized via an aqueous dispersion process. Incorporation of carboxylic groups was achieved using thioacids of different length. Surface properties were investigated by mean of water absorption analysis and static contact-angle measurements using water, diiodomethane, formamide and ethylene glycol. Blood compatibility of the PUs was evaluated by in vitro adhesion assays using 111In-radiolabeled platelet-rich plasma and [125I]fibrinogen. Morphology of the adhered platelets was examined by scanning electron microscopy (SEM). Results were compared to two biomedical-grade PUs, namely Pellethane and Tecoflex. Insertion of carboxylic groups increased surface hydrophilicity and limited water uptake ( < 8% for an ion content of 5% by weight). Surface energy of all synthesized PUs was between 40 and 45 mJ/m2. Platelet adhesion and fibrinogen adsorption on the PU anionomer surfaces were affected as a function to the increase of graft length; thiopropionic was the most haemocompatible, followed by thiosuccinic and then thioglycolic acid. SEM analyses of all ionic PU samples exhibited low platelet adhesion to surfaces with no morphological modification. In conclusion, increased hydrophily, dynamic mobility and charge repulsion are synergistic key factors for enhanced haemocompatibility.
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Affiliation(s)
- L Poussard
- UMR 6522, Polymères Biopolymères Membranes, L2M, INSA de Rouen, 76131 Mont-Saint-Aignan cedex, France
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Shin MS, Hong JY, Park S. Gemcitabine release behavior of polyurethane matrixes designed for local anti-cancer drug delivery via stent. J Drug Deliv Sci Technol 2012. [DOI: 10.1016/s1773-2247(12)50050-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Feng Y, Yang D, Behl M, Lendlein A, Zhao H, Guo J. The Influence of Zwitterionic Phospholipid Brushes Grafted via UV-Initiated or SI-ATR Polymerization on the Hemocompatibility of Polycarbonateurethane. ACTA ACUST UNITED AC 2011. [DOI: 10.1002/masy.201100034] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Grafting Sulfoammonium Zwitterionic Brushes onto Polycarbonateurethane Surface to Improve Hemocompatibility. ACTA ACUST UNITED AC 2011. [DOI: 10.4028/www.scientific.net/amr.306-307.1631] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Poly(3-dimethyl(methacryloyloxyethyl)ammonium propane sulfonate) (poly(DMAPS)) zwitterionic brushes were grafted onto the polycarbonateurethane (PCU) surface to improve its hydrophilicity and hemocompatibility by Ultraviolet (UV) polymerization. Fourier transform infrared (FTIR), X-ray photoelectron spectroscopy (XPS) and water contact angle were used to characterize the chemical and physical properties of the modified PCU surface. DMAPS-grafted PCU films showed significantly high hydrophilicity owing to the high hydrophilic poly(DMAPS) zwitterionic brushes. The cytotoxicity tests revealed the sulfoammonium zwitterionic brushes modified PCU film had good cytocompatibility. In addition, the hemocompatibility of the modified PCU films was evaluated by hemolytic tests and platelet adhesion tests. The PCU films modified with zwitterionic brushes had a lower hemolytic index, showed effective resistance to platelet adhesion. Due to the fact that sulfoammonium zwitterionic brushes can improve the hemocompatibility of the PCU surface, this gives rise to its potential application as blood-contacting materials or devices.
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Nair PA, Ramesh P. Synthesis and characterization of poly(urethane-ether)s from calcium salt of p-hydroxybenzoic acid. J Appl Polym Sci 2011. [DOI: 10.1002/app.33906] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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36
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Zhao H, Feng Y, Guo J. Polycarbonateurethane films containing complex of copper(II) catalyzed generation of nitric oxide. J Appl Polym Sci 2011. [DOI: 10.1002/app.34056] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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Faria M, Brogueira P, de Pinho MN. Sub-micron tailoring of bi-soft segment asymmetric polyurethane membrane surfaces with enhanced hemocompatibility properties. Colloids Surf B Biointerfaces 2011; 86:21-7. [PMID: 21497070 DOI: 10.1016/j.colsurfb.2011.03.021] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2011] [Revised: 03/03/2011] [Accepted: 03/11/2011] [Indexed: 12/01/2022]
Abstract
Enhancement of membrane hemocompatibility is achieved through the control of the surface morphology. Bi-soft segment integrally skinned poly(ester urethane urea) (PEUU) membranes containing polycaprolactone (PCL) as a second soft segment are synthesized with PCL-diol ranging from 0% to 15% (w/w). Scanning electron microscopy and atomic force microscopy characterized membrane asymmetry and sub-micron roughnesses, R(a), of top dense surfaces as major assets to the development of platelet/membrane surface interactions. Here we show that the top dense surfaces of asymmetric PEUU membranes can be tailored with different morphologies when the ratio of the two soft segments PPO/PCL varies. A strong correlation between the top surface roughnesses, R(a) and platelet deposition is identified. The membrane with 15% (w/w) of PCL-diol, PEUU 85, shows the smoothest top dense layer with a R(a) as low as 1 nm which is 5 times below the characteristic value of the PEUU membrane with a single soft segment. The PEUU 85 asymmetric membrane displayed minimal platelet deposition and inhibition of extreme stages of platelet activation.
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Affiliation(s)
- Mónica Faria
- ICEMS and Department of Chemical and Biological Engineering, Instituto Superior Tecnico, Technical University of Lisbon, 1049-001 Lisboa, Portugal
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38
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Zheng Y, He C, Huynh CT, Lee DS. Biodegradable pH- and temperature-sensitive multiblock copolymer hydrogels based on poly(amino-ester urethane)s. Macromol Res 2010. [DOI: 10.1007/s13233-010-1002-2] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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39
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Zhao H, Feng Y, Guo J. Grafting of poly(ethylene glycol) monoacrylate onto polycarbonateurethane surfaces by ultraviolet radiation grafting polymerization to control hydrophilicity. J Appl Polym Sci 2010. [DOI: 10.1002/app.32997] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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40
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Paclitaxel-polyurethane film for anti-cancer drug delivery: Film characterization and preliminary in vivo study. Macromol Res 2010. [DOI: 10.1007/s13233-010-0715-6] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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41
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Fluorinated siloxane-containing waterborne polyurethaneureas with excellent hemocompatibility, waterproof and mechanical properties. Eur Polym J 2010. [DOI: 10.1016/j.eurpolymj.2009.12.009] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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42
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Ojha U, Kulkarni P, Faust R. Syntheses and characterization of novel biostable polyisobutylene based thermoplastic polyurethanes. POLYMER 2009. [DOI: 10.1016/j.polymer.2009.05.025] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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43
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Król P, Byczyński Ł. Chemical structure, thermal properties, and free-surface energy parameters of coatings synthesized from poly(urethane-dimethylsiloxane) anionomers. J Appl Polym Sci 2008. [DOI: 10.1002/app.28918] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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44
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Zhang C, Wen X, Vyavahare NR, Boland T. Synthesis and characterization of biodegradable elastomeric polyurethane scaffolds fabricated by the inkjet technique. Biomaterials 2008; 29:3781-91. [DOI: 10.1016/j.biomaterials.2008.06.009] [Citation(s) in RCA: 82] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2008] [Accepted: 06/07/2008] [Indexed: 11/25/2022]
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45
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Dayananda K, He C, Park DK, Park TG, Lee DS. pH- and temperature-sensitive multiblock copolymer hydrogels composed of poly(ethylene glycol) and poly(amino urethane). POLYMER 2008. [DOI: 10.1016/j.polymer.2008.09.033] [Citation(s) in RCA: 81] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Loading dependent swelling and release properties of novel biodegradable, elastic and environmental stimuli-sensitive polyurethanes. J Control Release 2008; 131:128-36. [PMID: 18703098 DOI: 10.1016/j.jconrel.2008.07.026] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2008] [Revised: 07/11/2008] [Accepted: 07/20/2008] [Indexed: 12/24/2022]
Abstract
A novel degradable, elastic, anionic, and linear polyurethane was synthesized from hexamethylene diisocyanate, polycaprolactone diol, and a bicine chain extender. The chemical structure, mechanical properties, degradation rate, and swelling ratio were characterized by comparing the polymer with a polyurethane containing a 2,2-(methylimino) diethanol chain extender. Due to the incorporation of negatively charged carboxyl side groups, the bicine extended polymers exhibited higher micro-phase separation, better mechanical properties in dry condition, and better sensitivity to environmental stimuli than controls, as demonstrated by its high swelling ratio at elevated pH, lower ionic strength, or higher temperature. The swelling ratio of membranes showed reversible change as the function of pH at 37 degrees C, the membranes becoming fully water soluble at pH above 8.3. Nile blue chloride and lysozyme were selected to study their release from this polymer. The release rates of both compounds were significantly influenced by the pH and ionic strength. The swelling ratios were also influenced by lysozyme loading at low pH. The pH dependent properties were used to fabricate scaffolds by drop-on-demand printing. Bicine extended polyurethanes may be of interest for possible drug delivery applications, customizable scaffold fabrication and other potential biomedical applications.
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48
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Yeganeh H, Orang F, Solouk A, Rafienia M. Synthesis, Characterization and Preliminary Investigation of Blood Compatibility of Novel Epoxy-modified Polyurethane Networks. J BIOACT COMPAT POL 2008. [DOI: 10.1177/0883911508091829] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
To prepare elastomers with acceptable physical properties and good blood compatibility, polyurethane networks were synthesized via crosslinking reaction of epoxy-terminated polyurethane prepolymers (EUPs) and hexamethylene diamine. EUPs were prepared by reacting glycidol and NCO-terminated polyurethanes. All new materials were characterized by conventional spectroscopic methods and properties were evaluated and correlated to their structure. Cytotoxcicity evaluation for the films of samples based on mouse fibroblasts (L929) revealed that these elastomers posed no threat to these cells. In vitro platelet-rich plasma contact test showed reduced number of adhered platelets on the surface of the films, particularly for those with maximum crystallinity and microphase structures and high hydrophilicity. The results obtained implied the potential for the utilization of these elastomers in biomedical applications.
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Affiliation(s)
- Hamid Yeganeh
- Polyurethane Department, Iran Polymer and Petrochemical Institute PO Box: 14965/115, Tehran, Iran,
| | - Fariba Orang
- Biomaterials Department, Faculty of Medical Engineering, Amir Kabir University of Technology, Tehran, Iran
| | - Atefeh Solouk
- Biomaterials Department, Faculty of Medical Engineering, Amir Kabir University of Technology, Tehran, Iran
| | - Mohammad Rafienia
- Biomaterials Department, Faculty of Medical Engineering, Amir Kabir University of Technology, Tehran, Iran
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Hwang S, Meyerhoff ME. Polyurethane with tethered copper(II)-cyclen complex: preparation, characterization and catalytic generation of nitric oxide from S-nitrosothiols. Biomaterials 2008; 29:2443-52. [PMID: 18314189 DOI: 10.1016/j.biomaterials.2008.02.004] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2007] [Accepted: 02/07/2008] [Indexed: 11/19/2022]
Abstract
The preparation and characterization of a commercial biomedical-grade polyurethane (Tecophilic((R)), SP-93A-100) material possessing covalently linked copper(II)-cyclen moieties as a nitric oxide (NO) generating polymer are described. Chemiluminescence NO measurements demonstrate that the prepared polymer can decompose endogenous S-nitrosothiols (RSNOs) such as S-nitrosoglutathione and S-nitrosocysteine to NO in the presence of thiol reducing agents (RSHs; e.g., glutathione and cysteine) at physiological pH. Since such RSNO and RSH species already exist in blood, the proposed polymer is capable of spontaneously generating NO when in contact with fresh blood. This is demonstrated by utilizing the polymer as an outer coating at the distal end of an amperometric NO sensor to create a device that generates response toward the RSNO species in the blood. This polymer possesses the combined benefits of a commercial biomedical-grade polyurethane with the ability to generate biologically active NO when in contact with blood, and thus may serve as a useful coating to improve the hemocompatibility of various medical devices.
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Affiliation(s)
- Sangyeul Hwang
- Department of Chemistry, The University of Michigan, 930 North University Avenue, Ann Arbor, MI 48109-1055, USA
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50
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Chou CW, Hsu SH, Wang PH. Biostability and biocompatibility of poly(ether)urethane containing gold or silver nanoparticles in a porcine model. J Biomed Mater Res A 2008; 84:785-94. [PMID: 17635027 DOI: 10.1002/jbm.a.31387] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Nanocomposites from polyether-type waterborne polyurethane (PU) incorporated with different amounts of gold nanoparticles (17.4-65 ppm) or silver nanoparticles (30.2-113 ppm) were prepared. Specifically, the nanocomposite containing 43.5 ppm of gold or 30.2 ppm of silver was previously found to possess the best thermal and mechanical properties. The enhanced biostability of the nanocomposite at the specific nanoparticle content was also observed in subcutaneous rats. The latter was probably related to the free radical scavenging ability of the nanocomposite shown in vitro. In this study, the in vivo biostability of the full series of these nanocomposites was assessed by porcine subcutaneous implantation for 19 days followed by microscopic examination and chemical characterization using attenuated total reflectance-infrared spectroscopy (ATR-IR). The nanocomposite at 43.5 ppm of gold ("PU-Au 43.5 ppm") and that at 30.2 ppm of silver ("PU-Ag 30.2 ppm") exhibited superior biostability in pigs to those at higher or lower nanoparticle contents. In particular, evidence of oxidative chain scission and crosslinking of the surface was presented by ATR-IR spectra in the explanted PU and nanocomposites other than PU-Au 43.5 ppm and PU-Ag 30.2 ppm. The extent of biodegradation and that of foreign body reactions were highly associated in these nanocomposites, both of which showing negative correlation with the free radical scavenging ability. The interdependency among antioxidation/biostability/biocompatibility of PU was demonstrated in this porcine model.
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Affiliation(s)
- Chih-Wei Chou
- Department of Chemical Engineering, National Chung Hsing University, Taichung, Taiwan, Republic of China
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