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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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2
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Wu Y, Garren MR, Estes Bright LM, Maffe P, Brooks M, Brisbois EJ, Handa H. Enhanced antibacterial efficacy against antibiotic-resistant bacteria via nitric oxide-releasing ampicillin polymer substrates. J Colloid Interface Sci 2024; 653:1763-1774. [PMID: 37832467 PMCID: PMC10593200 DOI: 10.1016/j.jcis.2023.09.188] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 09/05/2023] [Accepted: 09/30/2023] [Indexed: 10/15/2023]
Abstract
The emergence of antibiotic-resistant bacteria poses a pressing threat to global health and is a leading cause of healthcare-related morbidity and mortality. Herein, we report the fabrication of medical-grade polymers incorporated with a dual-action S-nitroso-N-acetylpenicillamine-functionalized ampicillin (SNAPicillin) conjugated molecule through a solvent evaporation process. The resulting SNAPicillin-incorporated polymer materials act as broad-spectrum antibacterial surfaces that improve the administration efficacy of conventional antibiotics through the targeted release of both nitric oxide and ampicillin. The polymer surfaces were characterized by scanning electron microscopy and static contact angle measurements. The nitric oxide (NO) release profile and diffusion of SNAPicillin from polymers were quantified using a chemiluminescence-based nitric oxide analyzer (NOA) and ultraviolet-visible (UV-vis) spectroscopy. As a result, the films had up to 2.96 × 10-7 mol cm-2 of total NO released within 24 hr. In addition, >79 % of the SNAPicillin reservoir was preserved in the polymers after 24 hr of incubation in the physiological environment, indicating their longer-term NO release ability and therapeutic window for antibacterial effects. The SNAPicillin-incorporated polymers reduced the viability of adhered bacteria in culture, with >95 % reduction found against clinically relevant strains of Staphylococcus aureus (S. aureus). Furthermore, SNAPicillin-modified surfaces did not elicit a cytotoxic effect toward 3T3 mouse fibroblast cells, supporting the material's biocompatibility in vitro. These results indicate that the complementary effects of NO-release and ampicillin in SNAPicillin-eluting polymers can enhance the properties of commonly infected medical device surfaces for antibacterial purposes.
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Affiliation(s)
- Yi Wu
- School of Chemical, Materials and Biomedical Engineering, College of Engineering, University of Georgia, Athens, GA 30602, United States
| | - Mark R Garren
- School of Chemical, Materials and Biomedical Engineering, College of Engineering, University of Georgia, Athens, GA 30602, United States
| | - Lori M Estes Bright
- School of Chemical, Materials and Biomedical Engineering, College of Engineering, University of Georgia, Athens, GA 30602, United States
| | - Patrick Maffe
- School of Chemical, Materials and Biomedical Engineering, College of Engineering, University of Georgia, Athens, GA 30602, United States
| | - Megan Brooks
- School of Chemical, Materials and Biomedical Engineering, College of Engineering, University of Georgia, Athens, GA 30602, United States
| | - Elizabeth J Brisbois
- School of Chemical, Materials and Biomedical Engineering, College of Engineering, University of Georgia, Athens, GA 30602, United States.
| | - Hitesh Handa
- School of Chemical, Materials and Biomedical Engineering, College of Engineering, University of Georgia, Athens, GA 30602, United States; Pharmaceutical and Biomedical Science Department, College of Pharmacy, University of Georgia, Athens, GA 30602, United States.
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3
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Rezvova MA, Ovcharenko EA, Klyshnikov KY, Kudryavtseva YA. Promising polymeric compounds for coronary stent graft membrane. КАРДИОВАСКУЛЯРНАЯ ТЕРАПИЯ И ПРОФИЛАКТИКА 2020. [DOI: 10.15829/1728-8800-2020-2318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
The literature review discusses the studies on developing the polymer membrane of a coronary stent graft. The new generation of coronary stent grafts is designed to increase the hemocompatibility and ensure its delivery to poorly accessible artery regions. Based on the clinical use results, three groups of promising polymers were identified: biostable polyurethanes, polyvinyl alcohol-based cryogels, bioresorbable compositions based on polylactide-caprolactone and lactic acid-glycolic acid copolymer. However, the possibility of their clinical application requires further experimental studying.
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Affiliation(s)
- M. A. Rezvova
- Research Institute for Complex Issues of Cardiovascular Diseases
| | - E. A. Ovcharenko
- Research Institute for Complex Issues of Cardiovascular Diseases
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4
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Yang B, Storey RF. Synthesis and characterization of polyisobutylene telechelic prepolymers with epoxide functionality. REACT FUNCT POLYM 2020. [DOI: 10.1016/j.reactfunctpolym.2020.104563] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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5
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Wu K, Wu Y, Huang S, Chen Z, Wang H, Shang Y, Li S. Synthesis and characterization of hydroxyl-terminated butadiene-end-capped polyisobutylene and its use as a diol for polyurethane preparation. RSC Adv 2020; 10:9601-9609. [PMID: 35497236 PMCID: PMC9050137 DOI: 10.1039/d0ra00132e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Accepted: 02/16/2020] [Indexed: 11/21/2022] Open
Abstract
Hydroxyl-terminated telechelic polyisobutylene (PIB) was prepared through living cationic polymerization. A living PIB chain was formed using the t-Bu-m-DiCuOMe/TiCl4 initiating system and then capped with 1,3-butadiene (BD) to prepare chlorine-terminated telechelic PIB. The chlorine-terminated telechelic PIB was then hydrolysed with tetrabutylammonium hydroxide to form hydroxyl-terminated PIB. Nuclear magnetic resonance spectroscopy confirmed hydrolysis completion. The hydroxyl-terminated PIB was subsequently used as a diol to react with 4,4-methylenebis(phenylisocyanate) (MDI) and produce a PIB-based polyurethane, which showed stronger acid resistance, hydrolysis stability and thermal oxidation stability than a commercial polyurethane.
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Affiliation(s)
- Kangda Wu
- Beijing Key Lab of Special Elastomeric Composite Materials, Department of Materials Science and Engineering, Beijing Institute of Petrochemical Technology Beijing 102617 China .,Beijing Key Lab of Special Elastomeric Composite Materials Beijing 102617 China
| | - Yibo Wu
- Beijing Key Lab of Special Elastomeric Composite Materials, Department of Materials Science and Engineering, Beijing Institute of Petrochemical Technology Beijing 102617 China .,Beijing Key Lab of Special Elastomeric Composite Materials Beijing 102617 China
| | - Shan Huang
- College of Material Science and Engineering, Beijing University of Chemical Technology Beijing 100029 China .,Beijing Key Lab of Special Elastomeric Composite Materials Beijing 102617 China
| | - Zhifei Chen
- College of Material Science and Engineering, Beijing University of Chemical Technology Beijing 100029 China .,Beijing Key Lab of Special Elastomeric Composite Materials Beijing 102617 China
| | - Hao Wang
- Beijing Key Lab of Special Elastomeric Composite Materials, Department of Materials Science and Engineering, Beijing Institute of Petrochemical Technology Beijing 102617 China .,Beijing Key Lab of Special Elastomeric Composite Materials Beijing 102617 China
| | - Yuwei Shang
- Beijing Key Lab of Special Elastomeric Composite Materials, Department of Materials Science and Engineering, Beijing Institute of Petrochemical Technology Beijing 102617 China .,Beijing Key Lab of Special Elastomeric Composite Materials Beijing 102617 China
| | - Shuxin Li
- Beijing Key Lab of Special Elastomeric Composite Materials, Department of Materials Science and Engineering, Beijing Institute of Petrochemical Technology Beijing 102617 China .,Beijing Key Lab of Special Elastomeric Composite Materials Beijing 102617 China
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6
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Sobolewski P, Murthy NS, Kohn J, El Fray M. Adsorption of Fibrinogen and Fibronectin on Elastomeric Poly(butylene succinate) Copolyesters. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:8850-8859. [PMID: 31244253 DOI: 10.1021/acs.langmuir.9b01119] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Proteins adsorbed onto biomaterial surfaces facilitate cell-material interactions, including adhesion and migration. Of particular importance are provisional matrix components, fibrinogen (Fg) and fibronectin (Fn), which play an important role in the wound-healing process. Here, to assess the potential of a series of elastomeric poly(butylene succinate) (PBS) copolymers for soft tissue engineering and regenerative medicine applications, we examined the adsorption of Fg and Fn. We prepared spin-coated thin films of the poly(butylene succinate) homopolymer and a series of elastomeric poly(butylene succinate) copolymers with butylene succinate (PBS, hard segment) to succinate-dimer linoleic diol unit (dilinoleic succinate (DLS), soft segments) weight ratios of 70:30, 60:40, and 50:50. X-ray diffraction was used to assess crystallinity, whereas the obtained thin films were characterized using a quartz crystal microbalance with dissipation monitoring (QCM-D) and atomic force microscopy. Protein adsorption was assessed using QCM-D, followed by data analysis using viscoelastic modeling. On all three copolymers, we observed robust adsorption of both key provisional matrix proteins. Importantly, for both proteins, viscoelastic modeling determined that the adlayers were 30-40 nm thick and had low shear modulus values (<25 kPa), thus indicating soft orientations (end-on for Fg) or conformations (open for Fn) of the hydrated proteins. Overall, our results are very encouraging, as they predict excellent cell adhesion and migration, key features enabling tissue integration of potential PBS-DLS scaffolds.
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Affiliation(s)
- Peter Sobolewski
- Division of Functional Materials and Biomaterials, Polymer Institute, Faculty of Chemical Technology and Engineering , West Pomeranian University of Technology, Szczecin , Al. Piastów 45 , 71-310 Szczecin , Poland
| | - N Sanjeeva Murthy
- New Jersey Center for Biomaterials, Rutgers, The State University of New Jersey , 145 Bevier Road , Piscataway , New Jersey 08854 , United States
| | - Joachim Kohn
- New Jersey Center for Biomaterials, Rutgers, The State University of New Jersey , 145 Bevier Road , Piscataway , New Jersey 08854 , United States
| | - Miroslawa El Fray
- Division of Functional Materials and Biomaterials, Polymer Institute, Faculty of Chemical Technology and Engineering , West Pomeranian University of Technology, Szczecin , Al. Piastów 45 , 71-310 Szczecin , Poland
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7
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Pant J, Goudie MJ, Chaji SM, Johnson BW, Handa H. Nitric oxide releasing vascular catheters for eradicating bacterial infection. J Biomed Mater Res B Appl Biomater 2018; 106:2849-2857. [PMID: 29266734 PMCID: PMC6013312 DOI: 10.1002/jbm.b.34065] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Revised: 11/21/2017] [Accepted: 12/02/2017] [Indexed: 12/16/2022]
Abstract
The interaction of blood proteins with an implant surface is not only a fundamental phenomenon but is also key to several important medical complications. Plasma proteins binding on the surface of intravascular catheters can promote bacterial adhesion leading to the risk of local and systemic complications such as catheter-related blood infections (CRBIs). The incidences of CRBIs in the United States amount to more than 250,000 cases/year with an attributable mortality of up to 35% and an annual healthcare expenditure of $2.3 billion approximately. This demands the development of truly nonthrombogenic and antimicrobial catheters. In the present study, catheters were fabricated by incorporating a nitric oxide (NO) donor molecule, S-nitroso-N-acetyl-penicillamine (SNAP) in a hydrophobic medical grade polymer, Elasteon-E2As. NO offers antithrombotic and antibacterial attributes without promoting drug resistance and cytotoxicity. E2As-SNAP catheters were first coated with fibrinogen, a blood plasma protein plays a key role in clot formation and eventual bacterial adhesion to the implant surface. The suitability of the catheters for biomedical applications was tested in vitro for contact angle, NO release kinetics, inhibition of bacteria, and absence of cytotoxicity toward mammalian cells. The highly hydrophobic catheters released NO in the physiological range that inhibited >99% bacterial viability on fibrinogen-coated catheters in a 24 h study. No toxic response of E2As-SNAP catheters leachate was observed using a standard cytotoxicity assay with mouse fibroblast cells. Overall, the results showed that the E2As-SNAP catheters can inhibit viable bacteria even in the presence of blood proteins without causing a cytotoxic response. The fundamentals of this study are applicable to other blood-contacting medical devices as well. © 2017 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 106B: 2849-2857, 2018.
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Affiliation(s)
| | | | - Sarah M. Chaji
- School of Chemical, Materials and Biomedical Engineering, College of Engineering, University of Georgia, Athens, GA, USA
| | - Benjamin W. Johnson
- School of Chemical, Materials and Biomedical Engineering, College of Engineering, University of Georgia, Athens, GA, USA
| | - Hitesh Handa
- School of Chemical, Materials and Biomedical Engineering, College of Engineering, University of Georgia, Athens, GA, USA
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8
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Gunatillake PA, Dandeniyage LS, Adhikari R, Bown M, Shanks R, Adhikari B. Advancements in the Development of Biostable Polyurethanes. POLYM REV 2018. [DOI: 10.1080/15583724.2018.1493694] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
| | - Loshini S. Dandeniyage
- CSIRO Manufacturing, Clayton, Victoria, Australia
- School of Sciences, RMIT University, Melbourne, Victoria, Australia
| | | | - Mark Bown
- CSIRO Manufacturing, Clayton, Victoria, Australia
| | - Robert Shanks
- School of Sciences, RMIT University, Melbourne, Victoria, Australia
| | - Benu Adhikari
- CSIRO Manufacturing, Clayton, Victoria, Australia
- School of Sciences, RMIT University, Melbourne, Victoria, Australia
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9
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Abstract
This article reviews stimuli-responsive and biostable polyurethanes (PUs) and discusses biomedical applications of smart PUs with a particular focus on long-term implantable PU biomaterials such as PU generated artificial blood vessels, artificial intervertebral discs (IVDs), and intravaginal rings (IVRs). Recently, smart PUs have been actively researched to enhance bioactivity, biocompatibility, and reduce drug side effects. Although biodegradability is important in regenerative medicine, biostability of PU plays a key role for long-term implantable biomaterials. This article reviews recent publications of research and inventions of stimuli-responsive and biostable PUs. Applications of smart PUs in long-term implantable biomaterials are discussed and linked to the future outlook of smart biostable PU biomaterials.
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Affiliation(s)
- Seungil Kim
- Biomedical Engineering, Faculty of Engineering, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada
| | - Song Liu
- Biomedical Engineering, Faculty of Engineering, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada.,Department of Biosystems Engineering, Faculty of Agricultural and Food Sciences, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada.,Department of Medical Microbiology, Rady Faculty of Health Science, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada
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10
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Fukushima K, Honda K, Inoue Y, Tanaka M. Synthesis of antithrombotic poly(carbonate-urethane)s through a sequential process of ring-opening polymerization and polyaddition facilitated by organocatalysts. Eur Polym J 2017. [DOI: 10.1016/j.eurpolymj.2017.07.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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11
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Pape AC, Ippel BD, Dankers PYW. Cell and Protein Fouling Properties of Polymeric Mixtures Containing Supramolecular Poly(ethylene glycol) Additives. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:4076-4082. [PMID: 28363017 PMCID: PMC5413964 DOI: 10.1021/acs.langmuir.7b00467] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Revised: 03/22/2017] [Indexed: 06/01/2023]
Abstract
Fouling properties of new biomaterials are important for the performance of a material in a biological environment. Here, a set of three supramolecular polymeric additives consisting of ureidopyrimidinone (UPy)-functionalized poly(ethylene glycol) (UPyPEG) were formulated with UPy-modified polycaprolactone into thin supramolecular material films. The antifouling properties of these material films were determined by investigation of the relation of cell adhesion and protein adsorption on these materials films. The presence of the UPyPEG additives at the surface of the films was evident by an increased hydrophilicity. Adhesion of human epithelial and endothelial cells was strongly reduced for two of the UPyPEG-containing films. Analysis of adsorption of the first three proteins from the Vroman series, albumin, γ-globulin, and fibrinogen, using quartz crystal microbalance with dissipation in combination with viscoelastic modeling, revealed that the surfaces containing the UPyPEG additives had a limited effect on adsorption of these proteins. Despite a limited reduction of protein adsorption, UPyPEG-containing mixtures were non-cell-adhesive, which shows that non-cell-adhesive properties of supramolecular polymer surfaces are not always directly correlated to protein adsorption.
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Affiliation(s)
- A. C.
H. Pape
- Institute
for Complex Molecular Systems, Laboratory for Chemical Biology, and Laboratory for
Cell and Tissue Engineering, Eindhoven University
of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Bastiaan D. Ippel
- Institute
for Complex Molecular Systems, Laboratory for Chemical Biology, and Laboratory for
Cell and Tissue Engineering, Eindhoven University
of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Patricia Y. W. Dankers
- Institute
for Complex Molecular Systems, Laboratory for Chemical Biology, and Laboratory for
Cell and Tissue Engineering, Eindhoven University
of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
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12
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Brisbois EJ, Major TC, Goudie MJ, Meyerhoff ME, Bartlett RH, Handa H. Attenuation of thrombosis and bacterial infection using dual function nitric oxide releasing central venous catheters in a 9day rabbit model. Acta Biomater 2016; 44:304-12. [PMID: 27506125 PMCID: PMC5045795 DOI: 10.1016/j.actbio.2016.08.009] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2016] [Revised: 07/19/2016] [Accepted: 08/05/2016] [Indexed: 10/21/2022]
Abstract
UNLABELLED Two major problems with implanted catheters are clotting and infection. Nitric oxide (NO) is an endogenous vasodilator as well as natural inhibitor of platelet adhesion/activation and an antimicrobial agent, and NO-releasing polymers are expected to have similar properties. Here, NO-releasing central venous catheters (CVCs) are fabricated using Elast-eon™ E2As polymer with both diazeniumdiolated dibutylhexanediamine (DBHD/NONO) and poly(lactic-co-glycolic acid) (PLGA) additives, where the NO release can be modulated and optimized via the hydrolysis rate of the PLGA. It is observed that using a 10% w/w additive of a PLGA with ester end group provides the most controlled NO release from the CVCs over a 14d period. The optimized DBHD/NONO-based catheters are non-hemolytic (hemolytic index of 0%) and noncytotoxic (grade 0). After 9d of catheter implantation in the jugular veins of rabbits, the NO-releasing CVCs have a significantly reduced thrombus area (7 times smaller) and a 95% reduction in bacterial adhesion. These results show the promise of DBHD/NONO-based NO releasing materials as a solution to achieve extended NO release for longer term prevention of clotting and infection associated with intravascular catheters. STATEMENT OF SIGNIFICANCE Clotting and infection are significant complications associated with central venous catheters (CVCs). While nitric oxide (NO) releasing materials have been shown to reduce platelet activation and bacterial infection in vitro and in short-term animal models, longer-term success of NO-releasing materials to further study their clinical potential has not been extensively evaluated to date. In this study, we evaluate diazeniumdiolate based NO-releasing CVCs over a 9d period in a rabbit model. The explanted NO-releasing CVCs were found to have significantly reduced thrombus area and bacterial adhesion. These NO-releasing coatings can improve the hemocompatibility and bactericidal activity of intravascular catheters, as well as other medical devices (e.g., urinary catheters, vascular grafts).
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Affiliation(s)
- Elizabeth J Brisbois
- Department of Surgery, University of Michigan Medical Center, Ann Arbor, MI, USA
| | - Terry C Major
- Department of Surgery, University of Michigan Medical Center, Ann Arbor, MI, USA
| | - Marcus J Goudie
- Biological Engineering, College of Engineering, University of Georgia, Athens, GA, USA
| | - Mark E Meyerhoff
- Department of Chemistry, University of Michigan, Ann Arbor, MI, USA
| | - Robert H Bartlett
- Department of Surgery, University of Michigan Medical Center, Ann Arbor, MI, USA
| | - Hitesh Handa
- Biological Engineering, College of Engineering, University of Georgia, Athens, GA, USA.
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13
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Ren L, Shah PN, Faust R. Morphology and tensile properties of model thermoplastic polyurethanes with MDI/butanediol based monodisperse hard segments. ACTA ACUST UNITED AC 2016. [DOI: 10.1002/polb.24243] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Li Ren
- Polymer Program, Department of Chemistry; University of Massachusetts Lowell; Lowell Massachusetts
| | - Priyank N. Shah
- Polymer Program, Department of Chemistry; University of Massachusetts Lowell; Lowell Massachusetts
| | - Rudolf Faust
- Polymer Program, Department of Chemistry; University of Massachusetts Lowell; Lowell Massachusetts
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14
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Goudie MJ, Brisbois EJ, Pant J, Thompson A, Potkay JA, Handa H. Characterization of an S-nitroso-N-acetylpenicillamine-based nitric oxide releasing polymer from a translational perspective. INT J POLYM MATER PO 2016; 65:769-778. [PMID: 27493297 DOI: 10.1080/00914037.2016.1163570] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Due to the role of nitric oxide (NO) in regulating a variety of biological functions in humans, numerous studies on different NO releasing/generating materials have been published over the past two decades. Although NO has been demonstrated to be a strong antimicrobial and potent antithrombotic agent, NO-releasing (NOrel) polymers have not reached the clinical setting. While increasing the concentration of the NO donor in the polymer is a common method to prolong the NO-release, this should not be at the cost of mechanical strength or biocompatibility of the original material. In this work, it was shown that the incorporation of S-nitroso-penicillamine (SNAP), an NO donor molecule, into Elast-eon E2As (a copolymer of mixed soft segments of polydimethylsiloxane and poly(hexamethylene oxide)), does not adversely impact the physical and biological attributes of the base polymer. Incorporating 10 wt % of SNAP into E2As reduces the ultimate tensile strength by only 20%. The inclusion of SNAP did not significantly affect the surface chemistry or roughness of E2As polymer. Ultraviolet radiation, ethylene oxide, and hydrogen peroxide vapor sterilization techniques retained approximately 90% of the active SNAP content, where sterilization of these materials did not affect the NO-release profile over an 18 day period. Furthermore, these NOrel materials were shown to be biocompatible with the host tissues as observed through hemocompatibility and cytotoxicity analysis. In addition, the stability of SNAP in E2As was studied under a variety of storage conditions, as they pertain to translational potential of these materials. SNAP-incorporated E2As stored at room temperature for over 6 months retained 87% of its initial SNAP content. Stored and fresh films exhibited similar NO release kinetics over an 18 day period. Combined, the results from this study suggest that SNAP-doped E2As polymer is suitable for commercial biomedical applications due to the reported physical and biological characteristics that are important for commercial and clinical success.
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Affiliation(s)
- Marcus J Goudie
- Department of Biological Engineering, University of Georgia, Athens, GA, USA
| | | | - Jitendra Pant
- Department of Biological Engineering, University of Georgia, Athens, GA, USA
| | | | | | - Hitesh Handa
- Department of Biological Engineering, University of Georgia, Athens, GA, USA
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15
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Effect of intersegmental interactions on the morphology of segmented polyurethanes with mixed soft segments: A coarse-grained simulation study. POLYMER 2016. [DOI: 10.1016/j.polymer.2016.03.008] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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16
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Wei X, Ren L, Bagdi K, Seethamraju K, Faust R. Morphology and Mechanical Properties of Thermoplastic Polyurethanes Containing Polyisobutylene/Poly(tetramethylene oxide) Mixed Segments. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2015. [DOI: 10.1080/10601325.2015.1080087] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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17
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Wolf AK, Qin Y, Major TC, Meyerhoff ME. Improved thromboresistance and analytical performance of intravascular amperometric glucose sensors using optimized nitric oxide release coatings. CHINESE CHEM LETT 2015. [DOI: 10.1016/j.cclet.2015.03.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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18
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Stefanović IS, Djonlagić J, Tovilović G, Nestorov J, Antić VV, Ostojić S, Pergal MV. Poly(urethane-dimethylsiloxane) copolymers displaying a range of soft segment contents, noncytotoxic chemistry, and nonadherent properties toward endothelial cells. J Biomed Mater Res A 2014; 103:1459-75. [PMID: 25046378 DOI: 10.1002/jbm.a.35285] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2014] [Revised: 07/07/2014] [Accepted: 07/18/2014] [Indexed: 11/09/2022]
Abstract
Polyurethane copolymers based on α,ω-dihydroxypropyl poly(dimethylsiloxane) (PDMS) with a range of soft segment contents were prepared by two-stage polymerization, and their microstructures, thermal, thermomechanical, and surface properties, as well as in vitro hemo- and cytocompatibility were evaluated. All utilized characterization methods confirmed the existence of moderately microphase separated structures with the appearance of some microphase mixing between segments as the PDMS (i.e., soft segment) content increased. Copolymers showed higher crystallinity, storage moduli, surface roughness, and surface free energy, but less hydrophobicity with decreasing PDMS content. Biocompatibility of copolymers was evaluated using an endothelial EA.hy926 cell line by direct contact, an extraction method and after pretreatment of copolymers with multicomponent protein mixture, as well as by a competitive protein adsorption assay. Copolymers showed no toxic effect to endothelial cells and all copolymers, except that with the lowest PDMS content, exhibited resistance to endothelial cell adhesion, suggesting their unsuitability for long-term biomedical devices which particularly require re-endothelialization. All copolymers exhibited excellent resistance to fibrinogen adsorption and adsorbed more albumin than fibrinogen in the competitive adsorption assay, suggesting their good hemocompatibility. The noncytotoxic chemistry of these synthesized materials, combined with their nonadherent properties which are inhospitable to cell attachment and growth, underlie the need for further investigations to clarify their potential for use in short-term biomedical devices.
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Affiliation(s)
- Ivan S Stefanović
- Institute of Chemistry, Technology and Metallurgy, University of Belgrade, Njegoševa 12, 11000, Belgrade, Serbia
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Yildirim E, Yurtsever M. The role of diisocyanate and soft segment on the intersegmental interactions in urethane and urea based segmented copolymers: A DFT study. COMPUT THEOR CHEM 2014. [DOI: 10.1016/j.comptc.2014.02.021] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Handa H, Major TC, Brisbois EJ, Amoako KA, Meyerhoff ME, Bartlett RH. Hemocompatibility Comparison of Biomedical Grade Polymers Using Rabbit Thrombogenicity Model for Preparing Nonthrombogenic Nitric Oxide Releasing Surfaces. J Mater Chem B 2014; 2:1059-1067. [PMID: 24634777 DOI: 10.1039/c3tb21771j] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Nitric oxide (NO) is an endogenous vasodilator as well as natural inhibitor of platelet adhesion/activation. Nitric oxide releasing (NOrel) materials can be prepared by doping an NO donor species, such as diazeniumdiolated dibutylhexanediamine (DBHD/N2O2), within a polymer coating. The inherent hemocompatibility properties of the base polymer can also influence the efficiency of such NO release coatings. In this study, four biomedical grade polymers were evaluated in a 4 h rabbit model of thrombogenicity for their effects on extracorporeal circuit thrombus formation and circulating platelet count. At the end of 4 h, Elast-Eon E2As was found to preserve 58% of baseline platelets versus 48, 40, and 47% for PVC/DOS, Tecophilic SP-60D-60, and Tecoflex SG80A, respectively. Elast-Eon also had significantly lower clot area of 5.2 cm2 compared to 6.7, 6.1, and 6.9 cm2 for PVC/DOS, SP-60D-60, and SG80A, respectively. Based on the results obtained for the base polymer comparison study, DBHD/N2O2-doped E2As was evaluated in short-term (4 h) rabbit studies to observe the NO effects on prevention of clotting and preservation of platelet function. Platelet preservation for this optimal NO release formulation was 97% of baseline after 4 h, and clot area was 0.9 cm2 compared to 5.2 cm2 for controls, demonstrating that combining E2As with NO release provides a truly advanced hemocompatible polymer coating for extracorporeal circuits and potentially other blood contacting applications.
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Affiliation(s)
- Hitesh Handa
- Department of Surgery, University of Michigan Medical Center, Ann Arbor, MI USA
| | - Terry C Major
- Department of Surgery, University of Michigan Medical Center, Ann Arbor, MI USA
| | | | - Kagya A Amoako
- Department of Internal Medicine, University of Michigan, Ann Arbor, MI USA
| | - Mark E Meyerhoff
- Department of Chemistry, University of Michigan, Ann Arbor, MI USA
| | - Robert H Bartlett
- Department of Surgery, University of Michigan Medical Center, Ann Arbor, MI USA
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Pergal MV, Nestorov J, Tovilović G, Ostojić S, Gođevac D, Vasiljević-Radović D, Djonlagić J. Structure and properties of thermoplastic polyurethanes based on poly(dimethylsiloxane): Assessment of biocompatibility. J Biomed Mater Res A 2013; 102:3951-64. [DOI: 10.1002/jbm.a.35071] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2013] [Revised: 11/29/2013] [Accepted: 12/18/2013] [Indexed: 11/08/2022]
Affiliation(s)
- Marija V. Pergal
- Institute of Chemistry; Technology and Metallurgy, University of Belgrade; Njegoševa 12 Belgrade 11000 Serbia
| | - Jelena Nestorov
- Department of Biochemistry; Institute for Biological Research “Siniša Stanković”; University of Belgrade; 142 Despot Stefan Blvd Belgrade 11000 Serbia
| | - Gordana Tovilović
- Department of Biochemistry; Institute for Biological Research “Siniša Stanković”; University of Belgrade; 142 Despot Stefan Blvd Belgrade 11000 Serbia
| | - Sanja Ostojić
- Institute of General and Physical Chemistry; University of Belgrade; Studentski trg 12-16 Belgrade 11000 Serbia
| | - Dejan Gođevac
- Institute of Chemistry; Technology and Metallurgy, University of Belgrade; Njegoševa 12 Belgrade 11000 Serbia
| | - Dana Vasiljević-Radović
- Institute of Chemistry; Technology and Metallurgy, University of Belgrade; Njegoševa 12 Belgrade 11000 Serbia
| | - Jasna Djonlagić
- Faculty of Technology and Metallurgy; University of Belgrade; Karnegijeva 4 Belgrade 11000 Serbia
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Long-term nitric oxide release and elevated temperature stability with S-nitroso-N-acetylpenicillamine (SNAP)-doped Elast-eon E2As polymer. Biomaterials 2013; 34:6957-66. [PMID: 23777908 DOI: 10.1016/j.biomaterials.2013.05.063] [Citation(s) in RCA: 123] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2013] [Accepted: 05/24/2013] [Indexed: 12/12/2022]
Abstract
Nitric oxide (NO) is known to be a potent inhibitor of platelet activation and adhesion. Healthy endothelial cells that line the inner walls of all blood vessels exhibit a NO flux of 0.5-4 × 10(-10) mol cm(-2) min(-1) that helps prevent thrombosis. Materials with a NO flux that is equivalent to this level are expected to exhibit similar anti-thrombotic properties. In this study, five biomedical grade polymers doped with S-nitroso-N-acetylpenicillamine (SNAP) were investigated for their potential to control the release of NO from the SNAP within the polymers, and further control the release of SNAP itself. SNAP in the Elast-eon E2As polymer creates an inexpensive, homogeneous coating that can locally deliver NO (via thermal and photochemical reactions) as well slowly release SNAP. Furthermore, SNAP is surprisingly stable in the E2As polymer, retaining 82% of the initial SNAP after 2 months storage at 37 °C. The E2As polymer containing SNAP was coated on the walls of extracorporeal circulation (ECC) circuits and exposed to 4 h blood flow in a rabbit model of extracorporeal circulation to examine the effects on platelet count, platelet function, clot area, and fibrinogen adsorption. After 4 h, platelet count was preserved at 100 ± 7% of baseline for the SNAP/E2As coated loops, compared to 60 ± 6% for E2As control circuits (n = 4). The SNAP/E2As coating also reduced the thrombus area when compared to the control (2.3 ± 0.6 and 3.4 ± 1.1 pixels/cm(2), respectively). The results suggest that the new SNAP/E2As coating has potential to improve the thromboresistance of intravascular catheters, grafts, and other blood-contacting medical devices, and exhibits excellent storage stability compared to previously reported NO release polymeric materials.
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Kulkarni P, Ojha U, Wei X, Gurung N, Seethamraju K, Faust R. Thermal and mechanical properties of polyisobutylene-based thermoplastic polyurethanes. J Appl Polym Sci 2013. [DOI: 10.1002/app.39236] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Pallavi Kulkarni
- Department of Chemistry; University of Massachusetts Lowell; One University Avenue Lowell Massachusetts
| | - Umaprasana Ojha
- Department of Chemistry; University of Massachusetts Lowell; One University Avenue Lowell Massachusetts
| | - Xinyu Wei
- Department of Chemistry; University of Massachusetts Lowell; One University Avenue Lowell Massachusetts
| | - Niraj Gurung
- Boston Scientific Corporation; 4100 Hamline Ave North St. Paul Minnesota
| | - Kasyap Seethamraju
- Boston Scientific Corporation; 4100 Hamline Ave North St. Paul Minnesota
| | - Rudolf Faust
- Department of Chemistry; University of Massachusetts Lowell; One University Avenue Lowell Massachusetts
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Cozzens D, Wei X, Faust R. Electrospinning of biostable polyisobutylene-based thermoplastic polyurethanes. ACTA ACUST UNITED AC 2012. [DOI: 10.1002/polb.23232] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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