1
|
Falak S, Shin BK, Huh DS. Antibacterial Activity of Polyaniline Coated in the Patterned Film Depending on the Surface Morphology and Acidic Dopant. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:1085. [PMID: 35407202 PMCID: PMC9000663 DOI: 10.3390/nano12071085] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 03/21/2022] [Accepted: 03/23/2022] [Indexed: 12/13/2022]
Abstract
We have fabricated poly(ε-caprolactone) (PCL) films with flat and honeycomb-patterned (HCP) structures to coat polyaniline (PANI) on the film surface. In addition, the effect of chemical modification of PANI by sulfuric acid (H2SO4) was also studied for antibacterial activity. The flat and HCP PCL films were obtained by simple evaporation of the solvent and via the breath figure (BF) method, respectively. The morphology and chemical composition of PANI coated on the film surface were evaluated by scanning electron microscopy (SEM) and X-ray spectroscopy (EDX). Fourier transform infrared spectroscopy (FT-IR) and thermogravimetric analyses (TGA) were obtained to identify the PANI coating. The wettability and conductivity of the films were also measured. Applicational aspects were evaluated by assessing antibacterial and antibiofilm activity against Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus). The EDX, TGA, and FT-IR findings indicated chemical modification of PCL film by PANI and H2SO4. The conductivity of the films was increased by the coating of PANI to the patterned surface and additionally increased by the chemically modified PANI. The antibacterial activity was 69.79%, 78.27%, and 88% against E. coli, and 32.73%, 62.65%, and 87.97% against S. aureus, for flat PANI, HCP PANI, and H2SO4-treated HCP films, respectively. Likewise, the PANI coated flat, HCP, and H2SO4-treated HCP films inhibited E. coli biofilm formation by around 41.62%, 63%, and 83.88% and S. aureus biofilm formation by 17.81%, 69.83%, and 96.57%, respectively. The antibacterial activity of the HCP film was higher than that of flat PANI films, probably due to the higher coating of PANI on the HCP surface. Moreover, sulfonation of the HCP film with H2SO4 might have improved the wettability, thereby enhancing the antibacterial and antibiofilm properties. Our results showed that topographical changes, as well as doping, offer simple and cost-effective ways to modify the structural and functional properties of films.
Collapse
Affiliation(s)
| | | | - Do Sung Huh
- Department of Chemistry, Nano Science and Engineering, Center of Nano Manufacturing, Inje University, Gimhae-si 50834, Korea; (S.F.); (B.K.S.)
| |
Collapse
|
2
|
Lin Y, Song B, Wang X, Zhang C, Zhang X, Sun S, Wu S, Ren H, Jia S, Liu Y, Han X. Catalytic cross‐coupling of aniline by pyrite and dissolved oxygen under alkaline conditions. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5735] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Yi‐Ying Lin
- School of Chemical Engineering and TechnologyTianjin University Tianjin China
| | - Bao‐Dong Song
- School of Chemical Engineering and TechnologyTianjin University Tianjin China
| | - Xiang‐Ming Wang
- School of Chemical Engineering and TechnologyTianjin University Tianjin China
| | - Cong‐Cong Zhang
- School of Environmental Science and EngineeringTianjin University Tianjin China
| | - Xiao‐Cong Zhang
- School of Chemical Engineering and TechnologyTianjin University Tianjin China
| | - Shi‐Wei Sun
- School of Chemical Engineering and TechnologyTianjin University Tianjin China
| | - Song‐Hai Wu
- School of Chemical Engineering and TechnologyTianjin University Tianjin China
| | - Hai‐Tao Ren
- School of TextilesTiangong University Tianjin China
| | - Shao‐Yi Jia
- School of Chemical Engineering and TechnologyTianjin University Tianjin China
| | - Yong Liu
- School of Chemistry and Chemical EngineeringTianjin University of Technology Tianjin China
| | - Xu Han
- School of Chemical Engineering and TechnologyTianjin University Tianjin China
- School of Environmental Science and EngineeringTianjin University Tianjin China
| |
Collapse
|
3
|
The biocompatibility of polyaniline and polypyrrole 2: Doping with organic phosphonates. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 113:110986. [PMID: 32487402 DOI: 10.1016/j.msec.2020.110986] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Revised: 03/31/2020] [Accepted: 04/17/2020] [Indexed: 11/23/2022]
Abstract
Conducting polymers (CP) can be used as pH- and/or electro-responsive components in various bioapplications, for example, in 4D smart scaffolds. The ability of CP to maintain conductivity under physiological conditions is, therefore, their crucial property. Unfortunately, the conductivity of the CP rapidly decreases in physiological environment, as their conducting salts convert to non-conducting bases. One of the promising solutions how to cope with this shortcoming is the use of alternative "doping" process that is not based on the protonation of CP with acids but on interactions relying in acidic hydrogen bonding. Therefore, the phosphonates (dimethyl phosphonate, diethyl phosphonate, dibutyl phosphonate, or diphenyl phosphonate) were used to re-dope two most common representatives of CP, polyaniline (PANI) and polypyrrole (PPy) bases. As a result, PANI doped with organic phosphonates proved to have significantly better stability of conductivity under different pH. It has also been shown that cytotoxicity of studied materials determined on embryonic stem cells and their embryotoxicity, determined as the impact on cardiomyogenesis and erythropoiesis, depend both on the polymer and phosphonate types used. With the exception of PANI doped with dibutyl phosphonate, all PPy-based phosphonates showed better biocompatibility than the phosphonates based on PANI.
Collapse
|
4
|
In-Vitro Hemocompatibility of Polyaniline Functionalized by Bioactive Molecules. Polymers (Basel) 2019; 11:polym11111861. [PMID: 31718055 PMCID: PMC6918175 DOI: 10.3390/polym11111861] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Revised: 10/22/2019] [Accepted: 11/01/2019] [Indexed: 11/17/2022] Open
Abstract
Hemocompatibility is an essential prerequisite for the application of materials in the field of biomedicine and biosensing. In addition, mixed ionic and electronic conductivity of conducting polymers is an advantageous property for these applications. Heparin-like materials containing sulfate, sulfamic, and carboxylic groups may have an anticoagulation effect. Therefore, sodium dodecylbenzenesulfonate, 2-aminoethane-1-sulfonic acid and N-(2-acetamido)-2-aminoethanesulfonic acid were used for modification of the representative of conducting polymers, polyaniline, and the resulting products were studied in the context of interactions with human blood. The anticoagulation activity was then correlated to surface energy and conductivity of the materials. Results show that anticoagulation activity is highly affected by the presence of suitable functional groups originating from the used heparin-like substances, and by the properties of polyaniline polymer itself.
Collapse
|
5
|
Ozaltin K, Lehocky M, Humpolicek P, Pelkova J, Di Martino A, Karakurt I, Saha P. Anticoagulant Polyethylene Terephthalate Surface by Plasma-Mediated Fucoidan Immobilization. Polymers (Basel) 2019; 11:E750. [PMID: 31035326 PMCID: PMC6572684 DOI: 10.3390/polym11050750] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Revised: 04/18/2019] [Accepted: 04/25/2019] [Indexed: 01/31/2023] Open
Abstract
Biomaterial-based blood clot formation is one of the biggest drawbacks of blood-contacting devices. To avoid blood clot formation, their surface must be tailored to increase hemocompatibility. Most synthetic polymeric biomaterials are inert and lack bonding sites for chemical agents to bond or tailor to the surface. In this study, polyethylene terephthalate was subjected to direct current air plasma treatment to enhance its surface energy and to bring oxidative functional binding sites. Marine-sourced anticoagulant sulphated polysaccharide fucoidan from Fucus vesiculosus was then immobilized onto the treated polyethylene terephthalate (PET) surface at different pH values to optimize chemical bonding behavior and therefore anticoagulant performance. Surface properties of samples were monitored using the water contact angle; chemical analyses were performed by FTIR and X-ray photoelectron spectroscopy (XPS) and their anticoagulant activity was tested by means of prothrombin time, activated partial thromboplastin time and thrombin time. On each of the fucoidan-immobilized surfaces, anticoagulation activity was performed by extending the thrombin time threshold and their pH 5 counterpart performed the best result compared to others.
Collapse
Affiliation(s)
- Kadir Ozaltin
- Centre of Polymer Systems, Tomas Bata University in Zlín, Tr. Tomase Bati 5678, 76001 Zlín, Czech Republic.
| | - Marian Lehocky
- Centre of Polymer Systems, Tomas Bata University in Zlín, Tr. Tomase Bati 5678, 76001 Zlín, Czech Republic.
| | - Petr Humpolicek
- Centre of Polymer Systems, Tomas Bata University in Zlín, Tr. Tomase Bati 5678, 76001 Zlín, Czech Republic.
| | - Jana Pelkova
- Department of Hematology, Tomas Bata Regional Hospital, Havlickovo Nabrezi 2916, 76001 Zlin, Czech Republic.
- Faculty of Humanities, Tomas Bata University in Zlín, Stefanikova 5670, 76001 Zlín, Czech Republic.
| | - Antonio Di Martino
- Centre of Polymer Systems, Tomas Bata University in Zlín, Tr. Tomase Bati 5678, 76001 Zlín, Czech Republic.
| | - Ilkay Karakurt
- Centre of Polymer Systems, Tomas Bata University in Zlín, Tr. Tomase Bati 5678, 76001 Zlín, Czech Republic.
| | - Petr Saha
- Centre of Polymer Systems, Tomas Bata University in Zlín, Tr. Tomase Bati 5678, 76001 Zlín, Czech Republic.
| |
Collapse
|
6
|
Mozetič M. Surface Modification to Improve Properties of Materials. MATERIALS (BASEL, SWITZERLAND) 2019; 12:E441. [PMID: 30709009 PMCID: PMC6384733 DOI: 10.3390/ma12030441] [Citation(s) in RCA: 69] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Accepted: 01/30/2019] [Indexed: 12/17/2022]
Abstract
Surface properties of modern materials are usually inadequate in terms of wettability, adhesion properties, biocompatibility etc., so they should be modified prior to application or any further processing such as coating with functional materials. Both the morphological properties and chemical structure/composition should be modified in order to obtain a desired surface finish. Various treatment procedures have been employed, and many are based on the application of non-equilibrium gaseous media, especially gaseous plasma. Although such treatments have been studied extensively in past decades and actually commercialized, the exact mechanisms of interaction between reactive gaseous species and solid materials is still inadequately understood. This special issue provides recent trends in nanostructuring and functionalization of solid materials with the goal of improving their functional properties.
Collapse
Affiliation(s)
- Miran Mozetič
- Department of Surface Engineering, Jozef Stefan Institute, Jamova cesta 39, 1000 Ljubljana, Slovenia.
| |
Collapse
|
7
|
Arteshi Y, Aghanejad A, Davaran S, Omidi Y. Biocompatible and electroconductive polyaniline-based biomaterials for electrical stimulation. Eur Polym J 2018. [DOI: 10.1016/j.eurpolymj.2018.08.036] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
|
8
|
Humpolíček P, Kašpárková V, Pacherník J, Stejskal J, Bober P, Capáková Z, Radaszkiewicz KA, Junkar I, Lehocký M. The biocompatibility of polyaniline and polypyrrole: A comparative study of their cytotoxicity, embryotoxicity and impurity profile. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 91:303-310. [PMID: 30033259 DOI: 10.1016/j.msec.2018.05.037] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Revised: 05/09/2018] [Accepted: 05/10/2018] [Indexed: 10/16/2022]
Abstract
Conducting polymers (CP), namely polyaniline (PANI) and polypyrrole (PPy), are promising materials applicable for the use as biointerfaces as they intrinsically combine electronic and ionic conductivity. Although a number of works have employed PANI or PPy in the preparation of copolymers, composites, and blends with other polymers, there is no systematic study dealing with the comparison of their fundamental biological properties. The present study, therefore, compares the biocompatibility of PANI and PPy in terms of cytotoxicity (using NIH/3T3 fibroblasts and embryonic stem cells) and embryotoxicity (their impact on erythropoiesis and cardiomyogenesis within embryonic bodies). The novelty of the study lies not only in the fact that embryotoxicity is presented for the first time for both studied polymers, but also in the elimination of inter-laboratory variations within the testing, such variation making the comparison of previously published works difficult. The results clearly show that there is a bigger difference between the biocompatibility of the respective polymers in their salt and base forms than between PANI and PPy as such. PANI and PPy can, therefore, be similarly applied in biomedicine when solely their biological properties are considered. Impurity content detected by mass spectroscopy is presented. These results can change the generally accepted opinion of the scientific community on better biocompatibility of PPy in comparison with PANI.
Collapse
Affiliation(s)
- Petr Humpolíček
- Centre of Polymer Systems, Tomas Bata University in Zlin, 760 01 Zlin, Czech Republic.
| | - Věra Kašpárková
- Centre of Polymer Systems, Tomas Bata University in Zlin, 760 01 Zlin, Czech Republic
| | - Jiří Pacherník
- Institute of Experimental Biology, Faculty of Science, Masaryk University, 625 00 Brno, Czech Republic
| | - Jaroslav Stejskal
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, 162 06 Prague 6, Czech Republic
| | - Patrycja Bober
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, 162 06 Prague 6, Czech Republic
| | - Zdenka Capáková
- Centre of Polymer Systems, Tomas Bata University in Zlin, 760 01 Zlin, Czech Republic
| | | | - Ita Junkar
- Josef Stefan Institute, Jamova 39, Ljubljana 1000, Slovenia
| | - Marián Lehocký
- Centre of Polymer Systems, Tomas Bata University in Zlin, 760 01 Zlin, Czech Republic
| |
Collapse
|
9
|
Kalaska B, Kamiński K, Miklosz J, Nakai K, Yusa SI, Pawlak D, Nowakowska M, Mogielnicki A, Szczubiałka K. Anticoagulant Properties of Poly(sodium 2-(acrylamido)-2-methylpropanesulfonate)-Based Di- and Triblock Polymers. Biomacromolecules 2018; 19:3104-3118. [DOI: 10.1021/acs.biomac.8b00691] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Bartlomiej Kalaska
- Department of Pharmacodynamics, Medical University of Bialystok, Mickiewicza 2c, 15-089 Bialystok, Poland
| | - Kamil Kamiński
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Kraków, Poland
| | - Joanna Miklosz
- Department of Pharmacodynamics, Medical University of Bialystok, Mickiewicza 2c, 15-089 Bialystok, Poland
| | - Keita Nakai
- Department of Applied Chemistry, Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo 671-2280, Japan
| | - Shin-Ichi Yusa
- Department of Applied Chemistry, Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo 671-2280, Japan
| | - Dariusz Pawlak
- Department of Pharmacodynamics, Medical University of Bialystok, Mickiewicza 2c, 15-089 Bialystok, Poland
| | - Maria Nowakowska
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Kraków, Poland
| | - Andrzej Mogielnicki
- Department of Pharmacodynamics, Medical University of Bialystok, Mickiewicza 2c, 15-089 Bialystok, Poland
| | - Krzysztof Szczubiałka
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Kraków, Poland
| |
Collapse
|
10
|
Kašpárková V, Humpolíček P, Capáková Z, Bober P, Stejskal J, Trchová M, Rejmontová P, Junkar I, Lehocký M, Mozetič M. Cell-compatible conducting polyaniline films prepared in colloidal dispersion mode. Colloids Surf B Biointerfaces 2017; 157:309-316. [PMID: 28601759 DOI: 10.1016/j.colsurfb.2017.05.066] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Revised: 05/20/2017] [Accepted: 05/26/2017] [Indexed: 10/19/2022]
Abstract
Conducting polyaniline can be prepared and modified using several procedures, all of which can significantly influence its applicability in different fields of biomedicine or biotechnology. The modifications of surface properties are crucial with respect to the possible applications of this polymer in tissue engineering or as biosensors. Innovative technique for preparing polyaniline films via in-situ polymerization in colloidal dispersion mode using four stabilizers (poly-N-vinylpyrrolidone; sodium dodecylsulfate; Tween 20 and Pluronic F108) was developed. The surface energy, conductivity, spectroscopic features, and cell compatibility of thin polyaniline films were determined using contact-angle measurement, the van der Pauw method, Fourier-transform infrared spectroscopy, and assay conducted on mouse fibroblasts, respectively. The stabilizers significantly influenced not only the surface and electrical properties of the films but also their cell compatibility. Sodium dodecylsulfate seems preferentially to combine both the high conductivity and good cell compatibility. Moreover, the films with sodium dodecylsulfate were non-irritant for skin, which was confirmed by their in-vitro exposure to the 3D-reconstructed human tissue model.
Collapse
Affiliation(s)
- Věra Kašpárková
- Centre of Polymer Systems, Tomas Bata University in Zlin, 76001 Zlin, Czech Republic; Department of Fat, Surfactant, and Cosmetics Technology, Faculty of Technology, Tomas Bata University in Zlin, 760 01 Zlin, Czech Republic
| | - Petr Humpolíček
- Centre of Polymer Systems, Tomas Bata University in Zlin, 76001 Zlin, Czech Republic; Polymer Centre, Faculty of Technology, Tomas Bata University in Zlin, 760 01 Zlin, Czech Republic.
| | - Zdenka Capáková
- Centre of Polymer Systems, Tomas Bata University in Zlin, 76001 Zlin, Czech Republic
| | - Patrycja Bober
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, 162 06 Prague 6, Czech Republic
| | - Jaroslav Stejskal
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, 162 06 Prague 6, Czech Republic
| | - Miroslava Trchová
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, 162 06 Prague 6, Czech Republic
| | - Petra Rejmontová
- Centre of Polymer Systems, Tomas Bata University in Zlin, 76001 Zlin, Czech Republic; Polymer Centre, Faculty of Technology, Tomas Bata University in Zlin, 760 01 Zlin, Czech Republic
| | - Ita Junkar
- Department of Surface Engineering, Plasma Laboratory, Josef Stefan Institute, 1000 Ljubljana, Slovenia
| | - Marián Lehocký
- Centre of Polymer Systems, Tomas Bata University in Zlin, 76001 Zlin, Czech Republic
| | - Miran Mozetič
- Department of Surface Engineering, Plasma Laboratory, Josef Stefan Institute, 1000 Ljubljana, Slovenia
| |
Collapse
|
11
|
|
12
|
Adhesion, Proliferation and Migration of NIH/3T3 Cells on Modified Polyaniline Surfaces. Int J Mol Sci 2016; 17:ijms17091439. [PMID: 27649159 PMCID: PMC5037718 DOI: 10.3390/ijms17091439] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Revised: 07/28/2016] [Accepted: 08/26/2016] [Indexed: 11/17/2022] Open
Abstract
Polyaniline shows great potential and promises wide application in the biomedical field thanks to its intrinsic conductivity and material properties, which closely resemble natural tissues. Surface properties are crucial, as these predetermine any interaction with biological fluids, proteins and cells. An advantage of polyaniline is the simple modification of its surface, e.g., by using various dopant acids. An investigation was made into the adhesion, proliferation and migration of mouse embryonic fibroblasts on pristine polyaniline films and films doped with sulfamic and phosphotungstic acids. In addition, polyaniline films supplemented with poly (2-acrylamido-2-methyl-1-propanesulfonic) acid at various ratios were tested. Results showed that the NIH/3T3 cell line was able to adhere, proliferate and migrate on the pristine polyaniline films as well as those films doped with sulfamic and phosphotungstic acids; thus, utilization of said forms in biomedicine appears promising. Nevertheless, incorporating poly (2-acrylamido-2-methyl-1-propanesulfonic) acid altered the surface properties of the polyaniline films and significantly affected cell behavior. In order to reveal the crucial factor influencing the surface/cell interaction, cell behavior is discussed in the context of the surface energy of individual samples. It was clearly demonstrated that the lesser the difference between the surface energy of the sample and cell, the more cyto-compatible the surface is.
Collapse
|
13
|
Della Pina C, Capáková Z, Sironi A, Humpolíček P, Sáha P, Falletta E. On the cytotoxicity of poly(4-aminodiphenylaniline) powders: Effect of acid dopant type and sample posttreatment. INT J POLYM MATER PO 2016. [DOI: 10.1080/00914037.2016.1190928] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
14
|
A New Route of Fucoidan Immobilization on Low Density Polyethylene and Its Blood Compatibility and Anticoagulation Activity. Int J Mol Sci 2016; 17:ijms17060908. [PMID: 27294915 PMCID: PMC4926442 DOI: 10.3390/ijms17060908] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2016] [Revised: 06/03/2016] [Accepted: 06/06/2016] [Indexed: 12/12/2022] Open
Abstract
Beside biomaterials’ bulk properties, their surface properties are equally important to control interfacial biocompatibility. However, due to the inadequate interaction with tissue, they may cause foreign body reaction. Moreover, surface induced thrombosis can occur when biomaterials are used for blood containing applications. Surface modification of the biomaterials can bring enhanced surface properties in biomedical applications. Sulfated polysaccharide coatings can be used to avoid surface induced thrombosis which may cause vascular occlusion (blocking the blood flow by blood clot), which results in serious health problems. Naturally occurring heparin is one of the sulfated polysaccharides most commonly used as an anticoagulant, but its long term usage causes hemorrhage. Marine sourced sulfated polysaccharide fucoidan is an alternative anticoagulant without the hemorrhage drawback. Heparin and fucoidan immobilization onto a low density polyethylene surface after functionalization by plasma has been studied. Surface energy was demonstrated by water contact angle test and chemical characterizations were carried out by Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy. Surface morphology was monitored by scanning electron microscope and atomic force microscope. Finally, their anticoagulation activity was examined for prothrombin time (PT), activated partial thromboplastin time (aPTT), and thrombin time (TT).
Collapse
|
15
|
In vitro screening procedure for characterization of thrombogenic properties of plasma treated surfaces. Biointerphases 2016; 11:029808. [PMID: 27154919 DOI: 10.1116/1.4948808] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Estimation of thrombogenic surface properties is an important aspect of hemocompatibility studies. To improve our understanding of interaction between blood and biomaterial surfaces, there is a need to employ standardized methods that are both effective and efficient. This contribution details a systematic approach for the in vitro analysis of plasma modified polymer surfaces and human blood platelet interaction, following the recently introduced ISO 10933-4 guidelines. A holistic multistep process is presented that considers all aspects of testing procedure, including blood collection, platelet function testing, and incubation parameters, right through to a comparison and evaluation of the different methods and analysis available. In terms of detection and analysis, confocal light microscopy is shown to offer many advantages over the widely used scanning electron microscopy technique; this includes simpler, less-invasive sample preparation, and less time-consuming analysis procedure. On the other hand, as an alternative to microscopy techniques, toxicology sulforhodamine B based assay (TOX assay) was also evaluated. It has been shown that the assay could be used for rapid estimation of relative concentration of blood platelets on the surface of plasma treated materials, especially when samples do not allow the implementation of microscopy techniques.
Collapse
|
16
|
Humpolíček P, Radaszkiewicz KA, Kašpárková V, Stejskal J, Trchová M, Kuceková Z, Vičarová H, Pacherník J, Lehocký M, Minařík A. Stem cell differentiation on conducting polyaniline. RSC Adv 2015. [DOI: 10.1039/c5ra12218j] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Cardiomyogenesis and neurogenesis were tested on polyaniline films. Polyaniline in pristine forms without any further modification can be applied in a variety of biomedical fields.
Collapse
|