1
|
Engbers G, Feijen J. Current Techniques to Improve the Blood Compatibility of Biomaterial Surfaces. Int J Artif Organs 2018. [DOI: 10.1177/039139889101400403] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- G.H. Engbers
- University of Twente, Department of Chemical Technology, section of Biomedical Materials Technology, Enschede
- Holland Biomaterials Group bv, Enschede – The Netherlands
| | - J. Feijen
- University of Twente, Department of Chemical Technology, section of Biomedical Materials Technology, Enschede
| |
Collapse
|
2
|
Dilcher JP, Jürgens H, Luinstra GA. Sequential Post-modifications of Polybutadiene for Industrial Applications. MULTI-COMPONENT AND SEQUENTIAL REACTIONS IN POLYMER SYNTHESIS 2015. [DOI: 10.1007/12_2015_309] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
|
3
|
Stearyl poly(ethylene oxide) grafted surfaces for preferential adsorption of albumin Part 2. The effect of molecular mobility on protein adsorption. POLYMER 2000. [DOI: 10.1016/s0032-3861(99)00556-x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
4
|
Borovetz HS, Burke JF, Chang TMS, Colas A, Cranin AN, Curtis J, Gemmell CH, Griffith BP, Hallab NJ, Heller J, Hoffman AS, Jacobs JJ, Ideker R, Katz JL, Kennedy J, Lemons JE, Malchesky PS, Morgan JR, Padera RE, Patel AS, Reffojo MF, Roby MS, Rohr TE, Schoen FJ, Sefton MV, Sheridan RT, Smith DC, Spelman FA, Tarcha PJ, Tomapkins RG, Venugopalan R, Wagner WR, Yager P, Yarmush ML. Application of Materials in Medicine, Biology, and Artificial Organs. Biomater Sci 1996. [DOI: 10.1016/b978-012582460-6/50010-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
5
|
van Delden CJ, Bezemer JM, Engbers GH, Feijen J. Poly(ethylene oxide)-modified carboxylated polystyrene latices--immobilization chemistry and protein adsorption. JOURNAL OF BIOMATERIALS SCIENCE. POLYMER EDITION 1996; 8:251-68. [PMID: 9041040 DOI: 10.1163/156856296x00282] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
alpha,omega-Diamino poly(ethylene oxides) (PEOs) with different molecular weights (148, 1000, and 3400) were covalently immobilized onto carboxylated polystyrene latices. The immobilization of PEO was carried out with N-(3-dimethylaminopropyl)-N'-ethylcarbodiimide (EDC) and N-hydroxysuccinimide (NHS) in aqueous media. The reaction conditions were optimized to obtain a maximal coupling of PEO. The degree of coupling was determined by the surface concentration of amino groups. The maximal surface concentrations of amino groups were close to what is expected for a complete coverage of the surface with PEO. Adsorption of albumin from a buffer solution onto PEO-containing surfaces was about 85% less than the albumin uptake by unmodified polystyrene latices. Protein adsorption from plasma dilutions was lower on surfaces containing PEO molecules with a higher molecular weight. The reduction of the protein uptake from plasma by surfaces containing PEO-3400 molecules was only 40% compared to the adsorption to unmodified surfaces. These results indicate that plasma proteins have a low affinity for surfaces modified with PEO. However the PEO modified surfaces are by no means 'protein resistant' when exposed to plasma.
Collapse
Affiliation(s)
- C J van Delden
- Department of Chemical Engineering, University of Twente, Enschede, The Netherlands
| | | | | | | |
Collapse
|
6
|
Tsuruta T. Contemporary topics in polymeric materials for biomedical applications. BIOPOLYMERS LIQUID CRYSTALLINE POLYMERS PHASE EMULSION 1996. [DOI: 10.1007/3-540-60484-7_1] [Citation(s) in RCA: 90] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
|
7
|
Groth T, Klosz K, Campbell EJ, New RR, Hall B, Goering H. Protein adsorption, lymphocyte adhesion and platelet adhesion/activation on polyurethane ureas is related to hard segment content and composition. JOURNAL OF BIOMATERIALS SCIENCE. POLYMER EDITION 1995; 6:497-510. [PMID: 7873505 DOI: 10.1163/156856294x00464] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Segmented polyurethane ureas with different hard segment content and composition were synthesized using 4,4'-diphenylmethane diisocyanate and polytetramethylene glycols. Using polyols with different molecular weights, it was possible to synthesize polyurethane ureas with either: (i) a constant ratio of urethane to urea bonds; (ii) a constant urethane content; or (iii) a constant urea content. Bulk properties were assessed by dynamic mechanical analysis. Surface properties were estimated by contact angle measurements and streaming potential measurements. Haemocompatibility was evaluated in vitro by measuring the adsorption of human serum albumin (HSA) and fibrinogen (Fg), the adhesion of human peripheral blood lymphocytes (PBL), and the presence of activated platelets on the biomaterial surfaces. Enzyme immuno assays (EIA) have been specially developed for this purpose for the detection of antibody-recognizable plasma proteins and platelet surface membrane proteins. No simple correlation between chemical structure of the polymers and surface properties was found. Parameters of haemocompatibility correlated more closely with hard segment content and chemical composition than with the surface characteristics of the polymers. Adsorption of plasma proteins, adhesion of lymphocytes and the adhesion/activation of platelets were found to increase with increasing hard segment content of the polyurethane ureas. However, the monoclonal-antibody recognisable fibrinogen and the platelet activation were nearly constant with increasing hard segment content, if the urea content was kept constant.
Collapse
Affiliation(s)
- T Groth
- Biomaterials Research Unit, School of Medicine (Charité), Humboldt University, Berlin, Germany
| | | | | | | | | | | |
Collapse
|
8
|
Pathak CP, Sawhney AS, Quinn CP, Hubbell JA. Polyimide-polyethylene glycol block copolymers: synthesis, characterization, and initial evaluation as a biomaterial. JOURNAL OF BIOMATERIALS SCIENCE. POLYMER EDITION 1995; 6:313-23. [PMID: 7841141 DOI: 10.1163/156856295x00021] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Block copolyimides with varying amounts of polyethylene glycol (PEG) were synthesized and characterized by copolymerization of diaminodiphenyl ether (DDE), amino terminated PEG, and benzophenone tetracarboxylic acid dianhydride (BTDA). Strong materials were obtained, with enhanced flexibility as compared to the parent DDE-BTDA polyimide homopolymer. Incorporation of PEG led to an increase in water absorption by these copolymers, and hydrophilicity was increased as reflected by a decrease in air-water-polymer contact angle. These materials supported less cell adhesion in vitro than the parent polyimide homopolymer. Short term in vivo evaluation of these copolymers showed reduced fibrous encapsulation than was observed in the absence of PEG.
Collapse
Affiliation(s)
- C P Pathak
- Department of Chemical Engineering, University of Texas at Austin, 78712-1062
| | | | | | | |
Collapse
|
9
|
|
10
|
Imanishi Y. Polymeric biomaterials. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 1994. [DOI: 10.1016/0928-4931(94)90046-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
11
|
Kashiwagi T, Ito Y, Imanishi Y. Synthesis and nonthrombogenicity of fluoroalkyl polyetherurethanes. JOURNAL OF BIOMATERIALS SCIENCE. POLYMER EDITION 1994; 5:157-66. [PMID: 8297828 DOI: 10.1163/156856294x00725] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
New polyetherurethanes carrying fluoroalkyl substituents in the side chains were synthesized from N,N-di(hydroxyethyl)heptadecafluorooctyl-sulfonamide (a chain extender), 4,4'-disocyanatodiphenylmethane, and poly(tetramethylene glycol). Various kinds of polyetherurethanes having different tensile properties were prepared by changing the content of fluoroalkyl chain extender or the molecular weight of poly(tetramethylene glycol). The surface of a film made from the fluoroalkyl polyetherurethane was strongly water-repulsive. The in vitro thrombus formation on the fluoroalkyl polyetherurethanes was reduced by increasing the content of chain extender for the same molecular weight of poly(tetramethylene glycol). Protein adsorption, platelet adhesion, and platelet activation on the fluoroalkyl polyetherurethanes were also investigated.
Collapse
Affiliation(s)
- T Kashiwagi
- Department of Polymer Chemistry, Kyoto University, Japan
| | | | | |
Collapse
|
12
|
Llanos GR, Sefton MV. Does polyethylene oxide possess a low thrombogenicity? JOURNAL OF BIOMATERIALS SCIENCE. POLYMER EDITION 1993; 4:381-400. [PMID: 8373752 DOI: 10.1163/156856293x00069] [Citation(s) in RCA: 95] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Because of the 'bland' nature of polyethylene oxide towards proteins and cells, considerable effort has been devoted to preparing surfaces rich in polyethylene oxide, using block copolymers, surface immobilization or other methods. It is clear that these modifications result in reduced levels of cell (including platelet) adhesion and protein adsorption, when compared to unmodified and typically hydrophobic substrates. It is far less clear whether the reduced adhesion or adsorption is due specifically to the thermodynamic effects of polyethylene oxide or to the increase in surface hydrophilicity after its immobilization. Even more so, it is unclear whether the reduction in such parameters is evidence of a reduced thrombogenicity.
Collapse
Affiliation(s)
- G R Llanos
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Ontario, Canada
| | | |
Collapse
|
13
|
López GP, Ratner BD, Tidwell CD, Haycox CL, Rapoza RJ, Horbett TA. Glow discharge plasma deposition of tetraethylene glycol dimethyl ether for fouling-resistant biomaterial surfaces. JOURNAL OF BIOMEDICAL MATERIALS RESEARCH 1992; 26:415-39. [PMID: 1601898 DOI: 10.1002/jbm.820260402] [Citation(s) in RCA: 140] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The glow discharge plasma deposition (GDPD) of tetraethylene glycol dimethyl ether is introduced as a novel method for obtaining surfaces that are resistant to protein adsorption and cellular attachment. Analysis of films by x-ray photoelectron spectroscopy and several biological assays indicate the formation of a fouling-resistant, PEO-like surface on several substrata (e.g., glass, polytetrafluoroethylene, polyethylene). Adsorption of 125I-radiolabelled proteins (fibrinogen, albumin and IgG) from buffer and plasma was very low (typically less than 20 ng/cm2) when compared to the untreated substrata, which exhibited much higher levels of protein adsorption. Not all coated substrata adsorbed equal amounts of protein (e.g., coated glass samples typically adsorbed more protein than coated polyethylene or coated polytetrafluoroethylene samples), suggesting that the substratum used may affect the amount of protein adsorbed. Measurement of dynamic platelet adhesion, using epifluorescent video microscopy, and endothelial cell attachment further demonstrates the short-term nonadhesiveness of these surfaces.
Collapse
Affiliation(s)
- G P López
- Department of Chemical Engineering, University of Washington, Seattle 98195
| | | | | | | | | | | |
Collapse
|
14
|
Abstract
Three novel methods, recently developed by us, for the synthesis of non-thrombogenetic materials were reviewed. The first was the utilization of poly(vinyl sulfonate) as a heparinoid and a newly synthesized polymerizable-thrombin-inhibitor. The chemicals were grafted onto the surfaces of materials. The second was the use of thrombin-substrate-analog peptide. The immobilized peptide was decomposed by blood coagulation factors and inhibited thrombus formation on the surface. The third method was the enhancement of endothelialization by immobilization of bio-signal molecules. The immobilized biosignals remarkably accelerated the growth of endothelial cells.
Collapse
Affiliation(s)
- Y Ito
- Department of Polymer Chemistry, Kyoto University, Japan
| | | |
Collapse
|
15
|
Han DK, Jeong SY, Kim YH, Min BG. Surface characteristics and blood compatibility of polyurethanes grafted by perfluoroalkyl chains. JOURNAL OF BIOMATERIALS SCIENCE. POLYMER EDITION 1992; 3:229-41. [PMID: 1610733 DOI: 10.1163/156856292x00141] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Polyurethane (PU) surface was chemically modified by grafting of perfluorodecanoic acid (PFDA) to produce a highly hydrophobic surface to compare the blood compatability with hydrophilic poly(ethylene oxide) (PEO) grafted PUs. The advancing contact angle of modified PU-PFDA was increased up to 115 deg, while that of untreated PU was 86 deg. The PFDA grafted PU exhibited less adhesion and shape change of platelets than untreated PU, and the activated partial thromboplastin time (APTT) of PU-PFDA was considerably extended. The ex vivo occlusion time of untreated PU was only 50 min, but that of PFDA grafted PU was extended to 130 min, indicating that this hydrophobic surface is significantly blood compatible. It is interesting to find that the enhanced blood compatibility of very hydrophobic PU-PFDA was equivalent to hydrophilic PU-PEO.
Collapse
Affiliation(s)
- D K Han
- Polymer Chemistry Laboratory, Korea Institute of Science and Technology, Seoul
| | | | | | | |
Collapse
|