1
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Zhao X, Yang K, Song B, Qiu H, Zhao J, Liu H, Lin Z, Han L, Zhang R. Amphiphilic nanofibrillated cellulose/polyurethane composites with antibacterial, antifouling and self-healing properties for potential catheter applications. Int J Biol Macromol 2024; 263:130407. [PMID: 38417747 DOI: 10.1016/j.ijbiomac.2024.130407] [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: 09/19/2023] [Revised: 02/20/2024] [Accepted: 02/21/2024] [Indexed: 03/01/2024]
Abstract
This study focuses on enhancing interventional medical devices, specifically catheters, using a novel composite material. Challenges like corrosion and contamination in vivo, often caused by body fluids' pH, bacteria, and proteins, lead to mechanical damage, bacterial colonization, and biofilm formation on devices like catheters. The objective of this study was to prepare a versatile composite (HFs) by designing polyurethanes (HPU) with an ionic chain extender (HIID) and blending them with amphiphilic nanofibrillated cellulose (Am-CNF). The composite leverages dynamic interactions such as hydrogen bonding and electrostatic forces, as evidenced by Molecular Mechanics (MM) calculations. The H4F0.75 composite exhibited exceptional properties: 99 % length recovery post 600 stretching cycles at 100 % strain, rapid self-healing in artificial urine, high bactericidal activity, and excellent cell viability. Moreover, mechanical aging tests and UV-vis spectral analysis confirmed the material's durability and safety. These findings suggest that the HFs composite holds significant promise for improving catheters' performance in medical applications.
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Affiliation(s)
- Xin Zhao
- School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang 315211, China; Zhejiang International Scientific and Technological Cooperative Base of Biomedical Materials and Technology, Zhejiang Engineering Research Center for Biomedical Materials, Cixi Institute of Biomedical Engineering, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315300, China
| | - Kai Yang
- Zhejiang International Scientific and Technological Cooperative Base of Biomedical Materials and Technology, Zhejiang Engineering Research Center for Biomedical Materials, Cixi Institute of Biomedical Engineering, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315300, China
| | - Baiyang Song
- Department of Urology, The First Affiliated Hospital of Ningbo University, 59 Liuting Road, Ningbo 315010, Zhejiang, China.
| | - Haofeng Qiu
- Zhejiang International Scientific and Technological Cooperative Base of Biomedical Materials and Technology, Zhejiang Engineering Research Center for Biomedical Materials, Cixi Institute of Biomedical Engineering, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315300, China
| | - Jiake Zhao
- Zhejiang International Scientific and Technological Cooperative Base of Biomedical Materials and Technology, Zhejiang Engineering Research Center for Biomedical Materials, Cixi Institute of Biomedical Engineering, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315300, China
| | - Hongzhi Liu
- School of Materials Science and Engineering, NingboTech University, Ningbo 315100, Zhejiang Province, China
| | - Zhihao Lin
- Zhejiang International Scientific and Technological Cooperative Base of Biomedical Materials and Technology, Zhejiang Engineering Research Center for Biomedical Materials, Cixi Institute of Biomedical Engineering, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315300, China
| | - Lijing Han
- Zhejiang International Scientific and Technological Cooperative Base of Biomedical Materials and Technology, Zhejiang Engineering Research Center for Biomedical Materials, Cixi Institute of Biomedical Engineering, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315300, China.
| | - Ruoyu Zhang
- Zhejiang International Scientific and Technological Cooperative Base of Biomedical Materials and Technology, Zhejiang Engineering Research Center for Biomedical Materials, Cixi Institute of Biomedical Engineering, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315300, China.
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2
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Drożdż K, Gołda-Cępa M, Chytrosz-Wróbel P, Kotarba A, Brzychczy-Włoch M. Improving Biocompatibility of Polyurethanes Apply in Medicine Using Oxygen Plasma and Its Negative Effect on Increased Bacterial Adhesion. Int J Biomater 2024; 2024:5102603. [PMID: 38434098 PMCID: PMC10907100 DOI: 10.1155/2024/5102603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 02/09/2024] [Accepted: 02/12/2024] [Indexed: 03/05/2024] Open
Abstract
Polyurethanes (PUs) are versatile polymers used in medical applications due to their high flexibility and fatigue resistance. PUs are widely used for synthetic blood vessels, wound dressings, cannulas, and urinary and cardiovascular catheters. Many scientific reports indicate that surface wettability is crucial for biocompatibility and bacterial adhesion. The use of oxygen plasma to modify PUs is advantageous because of its effectiveness in introducing oxygen-containing functional groups, thereby altering surface wettability. The purpose of this study was to investigate the effect of the modification of the oxygen plasma of polyurethane on its biocompatibility with lung tissue (A549 cell line) and the adhesion of Gram-positive bacteria (S. aureus and S. epidermidis). The results showed that the modification of polyurethane by oxygen plasma allowed the introduction of functional groups containing oxygen (-OH and -COOH), which significantly increased its hydrophilicity (change from 105° ± 2° to 9° ± 2°) of PUs. Surface analysis by atomic force microscopy (AFM) showed changes in PU topography (change in maximum height from ∼110.3 nm to ∼32.1 nm). Moreover, biocompatibility studies on A549 cells showed that on the PU-modified surface, the cells exhibited altered morphology (increases in cell surface area and length, and thus reduced circularity) without concomitant effects on cell viability. However, serial dilution and plate count and microscopic methods confirmed that plasma modification significantly increased the adhesion of S. aureus and S. epidermidis bacteria. This study indicate the important role of surface hydrophilicity in biocompatibility and bacterial adhesion, which is important in the design of new medical biomaterials.
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Affiliation(s)
- Kamil Drożdż
- Department of Molecular Medical Microbiology, Chair of Microbiology, Faculty of Medicine, Jagiellonian University Medical College, Krakow 31-121, Poland
| | - Monika Gołda-Cępa
- Faculty of Chemistry, Jagiellonian University, Krakow 31-007, Poland
| | | | - Andrzej Kotarba
- Faculty of Chemistry, Jagiellonian University, Krakow 31-007, Poland
| | - Monika Brzychczy-Włoch
- Department of Molecular Medical Microbiology, Chair of Microbiology, Faculty of Medicine, Jagiellonian University Medical College, Krakow 31-121, Poland
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Górecka Ż, Idaszek J, Heljak M, Martinez DC, Choińska E, Kulas Z, Święszkowski W. Indocyanine green and iohexol loaded hydroxyapatite in poly(L-lactide-co-caprolactone)-based composite for bimodal near-infrared fluorescence- and X-ray-based imaging. J Biomed Mater Res B Appl Biomater 2024; 112:e35313. [PMID: 37596854 DOI: 10.1002/jbm.b.35313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 07/19/2023] [Accepted: 07/31/2023] [Indexed: 08/20/2023]
Abstract
This study aimed to develop material for multimodal imaging by means of X-ray and near-infrared containing FDA- and EMA-approved iohexol and indocyanine green (ICG). The mentioned contrast agents (CAs) are hydrophilic and amphiphilic, respectively, which creates difficulties in fabrication of functional polymeric composites for fiducial markers (FMs) with usage thereof. Therefore, this study exploited for the first time the possibility of enhancing the radiopacity and introduction of the NIR fluorescence of FMs by adsorption of the CAs on hydroxyapatite (HAp) nanoparticles. The particles were embedded in the poly(L-lactide-co-caprolactone) (P[LAcoCL]) matrix resulting in the composite material for bimodal near-infrared fluorescence- and X-ray-based imaging. The applied method of material preparation provided homogenous distribution of both CAs with high iohexol loading efficiency and improved fluorescence signal due to hindered ICG aggregation. The material possessed profound contrasting properties for both imaging modalities. Its stability was evaluated during in vitro experiments in phosphate-buffered saline (PBS) and foetal bovine serum (FBS) solutions. The addition of HAp nanoparticles had significant effect on the fluorescence signal. The X-ray radiopacity was stable within minimum 11 weeks, even though the addition of ICG contributed to a faster release of iohexol. The stiffness of the material was not affected by iohexol or ICG, but incorporation of HAp nanoparticles elevated the values of bending modulus by approximately 70%. Moreover, the performed cell study revealed that all tested materials were not cytotoxic. Thus, the developed material can be successfully used for fabrication of FMs.
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Affiliation(s)
- Żaneta Górecka
- Division of Materials Design, Faculty of Materials Science and Engineering, Warsaw University of Technology, Warsaw, Poland
- Centre for Advanced Materials and Technologies CEZAMAT, Warsaw University of Technology, Warsaw, Poland
| | - Joanna Idaszek
- Division of Materials Design, Faculty of Materials Science and Engineering, Warsaw University of Technology, Warsaw, Poland
| | - Marcin Heljak
- Division of Materials Design, Faculty of Materials Science and Engineering, Warsaw University of Technology, Warsaw, Poland
| | - Diana C Martinez
- Division of Materials Design, Faculty of Materials Science and Engineering, Warsaw University of Technology, Warsaw, Poland
| | - Emilia Choińska
- Division of Materials Design, Faculty of Materials Science and Engineering, Warsaw University of Technology, Warsaw, Poland
| | - Zbigniew Kulas
- Faculty of Mechanical Engineering, Wroclaw University of Science and Technology, Wroclaw, Poland
| | - Wojciech Święszkowski
- Division of Materials Design, Faculty of Materials Science and Engineering, Warsaw University of Technology, Warsaw, Poland
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Ahmad F, Cheema TA, Rehman K, Ullah M, Jamil M, Park CW. Hemodynamic performance evaluation of neonatal ECMO double lumen cannula using fluid-structure interaction. INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN BIOMEDICAL ENGINEERING 2023; 39:e3706. [PMID: 37039384 DOI: 10.1002/cnm.3706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 12/30/2022] [Accepted: 03/19/2023] [Indexed: 06/07/2023]
Abstract
Extra corporeal membrane oxygenation (ECMO) is an artificial oxygenation facility, employed in situations of cardio-pulmonary failure. Some diseases i.e., acute respiratory distress syndrome, pulmonary hypertension, corona virus disease (COVID-19) etc. affect oxygenation performance of the lungs thus requiring the need of artificial oxygenation. Critical care teams used ECMO technique during the COVID-19 pandemic to support the heart and lungs of COVID-19 patients who had an acute respiratory or cardiac failure. Double Lumen Cannula (DLC) is one of the most critical components of ECMO as it resides inside the patient and, connects patient with external oxygenation circuit. DLC facilitates delivery and drainage of blood from the patient's body. DLC is characterized by delicate balance of internal and external flows inside a limited space of the right atrium (RA). An optimal performance of the DLC necessitates structural stability under biological and hemodynamic loads, a fact that has been overlooked by previously published studies. In the past, many researchers experimentally and computationally investigated the hemodynamic performance of DLC by employing Eulerian approach, which evaluate instantaneous blood damage without considering blood shear exposure history (qualitative assessment only). The present study is an attempt to address the aforementioned limitations of the previous studies by employing Lagrangian (quantitative assessment) and incorporating the effect of fluid-structure interaction (FSI) to study the hemodynamic performance of neonatal DLC. The study was performed by solving three-dimensional continuity, momentum, and structural mechanics equation(s) by numerical methods for the blood flow through neonatal DLC. A two-way coupled FSI analysis was performed to analyze the effect of DLC structural deformation on its hemodynamic performance. Results show that the return lumen was the most critical section with maximum pressure drop, velocity, shear stresses, and blood damage. Recirculation and residence time of blood in the right atrium (RA) increases with increasing blood flow rates. Considering the structural deformation has led to higher blood damage inside the DLC-atrium system. Maximum Von-Mises stress was present on the side edges of the return lumen that showed direct proportionality with the blood flow rate.
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Affiliation(s)
- Faiq Ahmad
- Faculty of Mechanical Engineering, GIK Institute of Engineering Sciences and Technology, Topi, 23460, KPK, Pakistan
| | - Taqi Ahmad Cheema
- Faculty of Mechanical Engineering, GIK Institute of Engineering Sciences and Technology, Topi, 23460, KPK, Pakistan
| | - Khawar Rehman
- Department of Civil and Environmental Engineering, Hanyang University, Seoul, 04763, South Korea
- Department of Civil Engineering, GIK Institute of Engineering Sciences and Technology, Topi, 23460, KPK, Pakistan
| | - Minhaj Ullah
- Faculty of Mechanical Engineering, GIK Institute of Engineering Sciences and Technology, Topi, 23460, KPK, Pakistan
| | - Muhammad Jamil
- Analysis Group, Starfish Medical, 455 Boleskine Rd, Victoria, British Columbia, Canada
- Department of Mechanical Engineering, KoÇ University, Sariyar, Istanbul, 34450, Turkey
| | - Cheol Woo Park
- School of Mechanical Engineering, Kyungpook National University, 80 Daehak-Ro, Buk-Gu, Daegu, 41566, South Korea
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5
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Diana R, Gentile FS, Concilio S, Petrella A, Belvedere R, Schibeci M, Arciello A, Di Costanzo L, Panunzi B. A DR/NIR Hybrid Polymeric Tool for Functional Bio-Coatings: Theoretical Study, Cytotoxicity, and Antimicrobial Activity. Polymers (Basel) 2023; 15:polym15040883. [PMID: 36850168 PMCID: PMC9967255 DOI: 10.3390/polym15040883] [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: 01/04/2023] [Revised: 01/31/2023] [Accepted: 02/07/2023] [Indexed: 02/12/2023] Open
Abstract
Among modern biomaterials, hybrid tools containing an organic component and a metal cation are recognized as added value, and, for many advanced biomedical applications, synthetic polymers are used as thin protective/functional coatings for medical or prosthetic devices and implants. These materials require specific non-degradability, biocompatibility, antimicrobial, and antiproliferative properties to address safety aspects concerning their use in medicine. Moreover, bioimaging monitoring of the biomedical device and/or implant through biological tissues is a desirable ability. This article reports a novel hybrid metallopolymer obtained by grafting zinc-coordinated fragments to an organic polymeric matrix. This hybrid polymer, owing to its relevant emission in the deep red to near-infrared (DR/NIR) region, is monitorable; therefore, it represents a potential material for biomedical coating. Furthermore, it shows good biocompatibility and adhesion properties and excellent stability in slightly acidic/basic water solutions. Finally, in contact with the superficial layers of human skin, it shows antimicrobial properties against Staphylococcus aureus bacterial strains.
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Affiliation(s)
- Rosita Diana
- Department of Agricultural Sciences, University of Naples Federico II, 80055 Napoli, Italy
| | | | - Simona Concilio
- Department of Pharmacy, University of Salerno, 84084 Salerno, Italy
- Bionam Research Center for Biomaterials, University of Salerno, 84084 Salerno, Italy
| | | | | | - Martina Schibeci
- Department of Chemical Sciences, University of Naples Federico II, 80126 Napoli, Italy
| | - Angela Arciello
- Department of Chemical Sciences, University of Naples Federico II, 80126 Napoli, Italy
- Istituto Nazionale di Biostrutture e Biosistemi (INBB), 00136 Roma, Italy
| | - Luigi Di Costanzo
- Department of Agricultural Sciences, University of Naples Federico II, 80055 Napoli, Italy
| | - Barbara Panunzi
- Department of Agricultural Sciences, University of Naples Federico II, 80055 Napoli, Italy
- Correspondence:
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6
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Contreras J, Stimpson A, Ahmed I, Irvine DJ, Whittington AR. Developing Echogenic Materials as Catheters for Use with Ultrasound. ACS Biomater Sci Eng 2022; 8:1312-1319. [PMID: 35171551 DOI: 10.1021/acsbiomaterials.1c01323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Patients with peripherally inserted central catheters (PICCs) are routinely discharged with the catheters in place. These patients experience complications due to undetected thrombosis or accidental dislodgement, with tracking through limited X-ray imaging. Developing catheters with the capability to be tracked without the need for X-ray imaging would greatly benefit these patients by decreasing patient stress, reducing time to diagnosis, and increasing nursing home capabilities. This study reports on the incorporation of echogenic microspheres into catheters to produce bulk echogenic effects for developments in the field of real-time ultrasound tracking of polymeric medical devices. The impact on elastic modulus, ultrasound contrast, and cytocompatibility of the polymer was analyzed when incorporating up to 10 wt % glass microspheres. Up to this loading level, the elastic modulus was found to remain constant. However, at 10 wt %, extrusion defects due to agglomeration, air bubbles, and shearing were numerous and deemed detrimental to ultrasound imaging. Successful, defect-free samples were produced with 5 wt % microsphere loading and when embedded in a soft tissue phantom revealed a significant increase in the signal-to-noise ratio as compared to the polymer alone. Preliminary results have shown a successful increase in polymer's echogenic properties, without undermining its mechanical and cytocompatibility properties.
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Affiliation(s)
- Jerry Contreras
- Materials Science and Engineering, Virginia Tech, 400 Stanger Street, 109A Surge Bldg, MC0237, Blacksburg, Virginia 24061, United States
| | - Amy Stimpson
- Faculty of Engineering, University of Nottingham, Coates Building, University Park Campus, Nottingham NG7 2RD, U.K
| | - Ifty Ahmed
- Faculty of Engineering, University of Nottingham, Coates Building, University Park Campus, Nottingham NG7 2RD, U.K
| | - Derek J Irvine
- Faculty of Engineering, University of Nottingham, Coates Building, University Park Campus, Nottingham NG7 2RD, U.K
| | - Abby R Whittington
- Materials Science and Engineering, Virginia Tech, 400 Stanger Street, 109A Surge Bldg, MC0237, Blacksburg, Virginia 24061, United States.,Chemical Engineering, Virginia Tech, 635 Prices Fork Road, 255 Goodwin Hall MC0211, Blacksburg, Virginia 24061, United States
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7
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Górecka Ż, Grzelecki D, Paskal W, Choińska E, Gilewicz J, Wrzesień R, Macherzyński W, Tracz M, Budzińska-Wrzesień E, Bedyńska M, Kopka M, Jackowska-Tracz A, Świątek-Najwer E, Włodarski PK, Jaworowski J, Święszkowski W. Biodegradable Fiducial Markers for Bimodal Near-Infrared Fluorescence- and X-ray-Based Imaging. ACS Biomater Sci Eng 2022; 8:859-870. [PMID: 35020357 DOI: 10.1021/acsbiomaterials.1c01259] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
This study aimed to evaluate, for the first time, implantable, biodegradable fiducial markers (FMs), which were designed for bimodal, near-infrared fluorescence-based (NIRF) and X-ray-based imaging. The developed FMs had poly(l-lactide-co-caprolactone)-based core-shell structures made of radiopaque (core) and fluorescent (shell) composites with a poly(l-lactide-co-caprolactone) matrix. The approved for human use contrast agents were utilized as fillers. Indocyanine green was applied to the shell material, whereas in the core materials, iohexol and barium sulfate were compared. Moreover, the possibility of tailoring the stability of the properties of the core materials by the addition of hydroxyapatite (HAp) was examined. The performed in situ (porcine tissue) and in vivo experiment (rat model) confirmed that the developed FMs possessed pronounced contrasting properties in NIRF and X-ray imaging. The presence of HAp improved the radiopacity of FMs at the initial state. It was also proved that, in iohexol-containing FMs, the presence of HAp slightly decreased the stability of contrasting properties, while in BaSO4-containing ones, changes were less pronounced. A comprehensive material analysis explaining the differences in the stability of the contrasting properties was also presented. The tissue response around the FMs with composite cores was comparable to that of the FMs with a pristine polymeric core. The developed composite FMs did not cause serious adverse effects on the surrounding tissues even when irradiated in vivo. The developed FMs ensured good visibility for NIRF image-supported tumor surgery and the following X-ray image-guided radiotherapy. Moreover, this study replenishes a scanty report regarding similar biodegradable composite materials with a high potential for application.
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Affiliation(s)
- Żaneta Górecka
- Division of Materials Design, Faculty of Materials Science and Engineering, Warsaw University of Technology, 141 Woloska Str., 02-507 Warsaw, Poland.,Centre for Advanced Materials and Technologies CEZAMAT, Warsaw University of Technology, 02-822 Warsaw, Poland
| | - Dariusz Grzelecki
- Department of Applied Pharmacy, Medical University of Warsaw, 02-097 Warsaw, Poland.,Department of Orthopedics and Rheumoorthopedics, Professor Adam Gruca Teaching Hospital, Centre of Postgraduate Medical Education, 05-400 Otwock, Poland
| | - Wiktor Paskal
- Centre for Preclinical Research, The Department of Methodology, Medical University of Warsaw, 02-091 Warsaw, Poland
| | - Emilia Choińska
- Division of Materials Design, Faculty of Materials Science and Engineering, Warsaw University of Technology, 141 Woloska Str., 02-507 Warsaw, Poland
| | - Joanna Gilewicz
- Department of Applied Pharmacy, Medical University of Warsaw, 02-097 Warsaw, Poland
| | - Robert Wrzesień
- Central Laboratory of Experimental Animal, Medical University of Warsaw, 02-097 Warsaw, Poland
| | - Wojciech Macherzyński
- Faculty of Microsystem Electronics and Photonics, Wroclaw University of Science and Technology, 50-372 Wroclaw, Poland
| | - Michał Tracz
- Institute of Veterinary Medicine, Department of Food Hygiene and Public Health Protection, Warsaw University of Life Sciences, 02-776 Warsaw, Poland
| | | | - Maria Bedyńska
- Department of Applied Pharmacy, Medical University of Warsaw, 02-097 Warsaw, Poland
| | - Michał Kopka
- Centre for Preclinical Research, The Department of Methodology, Medical University of Warsaw, 02-091 Warsaw, Poland
| | - Agnieszka Jackowska-Tracz
- Institute of Veterinary Medicine, Department of Food Hygiene and Public Health Protection, Warsaw University of Life Sciences, 02-776 Warsaw, Poland
| | - Ewelina Świątek-Najwer
- Faculty of Mechanical Engineering, Wroclaw University of Science and Technology, 50-371 Wroclaw, Poland
| | - Paweł K Włodarski
- Centre for Preclinical Research, The Department of Methodology, Medical University of Warsaw, 02-091 Warsaw, Poland
| | - Janusz Jaworowski
- Department of Applied Pharmacy, Medical University of Warsaw, 02-097 Warsaw, Poland
| | - Wojciech Święszkowski
- Division of Materials Design, Faculty of Materials Science and Engineering, Warsaw University of Technology, 141 Woloska Str., 02-507 Warsaw, Poland
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Shim HJ, Sunwoo S, Kim Y, Koo JH, Kim D. Functionalized Elastomers for Intrinsically Soft and Biointegrated Electronics. Adv Healthc Mater 2021; 10:e2002105. [PMID: 33506654 DOI: 10.1002/adhm.202002105] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 12/31/2020] [Indexed: 12/11/2022]
Abstract
Elastomers are suitable materials for constructing a conformal interface with soft and curvilinear biological tissue due to their intrinsically deformable mechanical properties. Intrinsically soft electronic devices whose mechanical properties are comparable to human tissue can be fabricated using suitably functionalized elastomers. This article reviews recent progress in functionalized elastomers and their application to intrinsically soft and biointegrated electronics. Elastomers can be functionalized by adding appropriate fillers, either nanoscale materials or polymers. Conducting or semiconducting elastomers synthesized and/or processed with these materials can be applied to the fabrication of soft biointegrated electronic devices. For facile integration of soft electronics with the human body, additional functionalization strategies can be employed to improve adhesive or autonomous healing properties. Recently, device components for intrinsically soft and biointegrated electronics, including sensors, stimulators, power supply devices, displays, and transistors, have been developed. Herein, representative examples of these fully elastomeric device components are discussed. Finally, the remaining challenges and future outlooks for the field are presented.
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Affiliation(s)
- Hyung Joon Shim
- Center for Nanoparticle Research Institute for Basic Science (IBS) Seoul 08826 Republic of Korea
- School of Chemical and Biological Engineering and Institute of Chemical Processes Seoul National University Seoul 08826 Republic of Korea
| | - Sung‐Hyuk Sunwoo
- Center for Nanoparticle Research Institute for Basic Science (IBS) Seoul 08826 Republic of Korea
- School of Chemical and Biological Engineering and Institute of Chemical Processes Seoul National University Seoul 08826 Republic of Korea
| | - Yeongjun Kim
- Center for Nanoparticle Research Institute for Basic Science (IBS) Seoul 08826 Republic of Korea
- School of Chemical and Biological Engineering and Institute of Chemical Processes Seoul National University Seoul 08826 Republic of Korea
| | - Ja Hoon Koo
- Center for Nanoparticle Research Institute for Basic Science (IBS) Seoul 08826 Republic of Korea
- School of Chemical and Biological Engineering and Institute of Chemical Processes Seoul National University Seoul 08826 Republic of Korea
| | - Dae‐Hyeong Kim
- Center for Nanoparticle Research Institute for Basic Science (IBS) Seoul 08826 Republic of Korea
- School of Chemical and Biological Engineering and Institute of Chemical Processes Seoul National University Seoul 08826 Republic of Korea
- Department of Materials Science and Engineering Seoul National University Seoul 08826 Republic of Korea
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9
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Warner JJ, Wang P, Mellor WM, Hwang HH, Park JH, Pyo SH, Chen S. 3D Printable Non-Isocyanate Polyurethanes with Tunable Material Properties. Polym Chem 2019; 10:4665-4674. [PMID: 33093876 DOI: 10.1039/c9py00999j] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Green chemistry-based non-isocyanate polyurethanes (NIPU) are synthesized and 3D-printed via rapid, projection photopolymerization into compliant mechanisms of 3D structure with spatially-localized material properties. Trimethylolpropane allyl ether-cyclic carbonate is used to couple the unique properties of two types of reaction chemistry: (1) primary diamine-cyclic carbonate ring-opening conjugation for supplanting conventional isocyanate-polyol reactions in creating urethane groups, with the additional advantage of enabling modular segment interchangeability within the diurethane prepolymers; and (2) thiol-ene (click) conjugation for non-telechelic, low monodispersity, quasi-crystalline-capable, and alternating step-growth co-photopolymerization. Fourier Transform Infrared Spectroscopy is used to monitor the functional group transformation in reactions, and to confirm these process-associated molecular products. The extent of how these processes utilize molecular tunability to affect material properties were investigated through measurement-based comparison of the various polymer compositions: frequency-related dynamic mechanical analysis, tension-related elastic-deformation mechanical analysis, and material swelling analysis. Stained murine myoblasts cultured on NIPU slabs were evaluated via fluorescent microscopy for "green-chemistry" affects on cytocompatibility and cell adhesion to assess potential biofouling resistance. 3D multi-material structures with micro-features were printed, thus demonstrating the capability to spatially pattern different NIPU materials in a controlled manner and build compliant mechanisms.
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Affiliation(s)
- John J Warner
- Department of NanoEngineering, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093
| | - Pengrui Wang
- Department of NanoEngineering, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093
| | - William M Mellor
- Department of NanoEngineering, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093
| | - Henry H Hwang
- Department of NanoEngineering, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093
| | - Ji Hoon Park
- Carbon Resources Institute, Korea Research Institute of Chemical Technology (KRICT), Daejeon, Republic of Korea
| | - Sang-Hyun Pyo
- Biotechnology, Department of Chemistry, Center for Chemistry and Chemical Engineering, Lund University, Box 124, 221 00 Lund, Sweden
| | - Shaochen Chen
- Department of NanoEngineering, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093
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10
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Sun F, Guo J, Li Y, Bai S, Wang Q. Preparation of high-performance polyethylene tubes under the coexistence of silicone cross-linked polyethylene and rotation extrusion. ROYAL SOCIETY OPEN SCIENCE 2019; 6:182095. [PMID: 31218035 PMCID: PMC6549968 DOI: 10.1098/rsos.182095] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Accepted: 04/15/2019] [Indexed: 06/09/2023]
Abstract
In this study, the silicone cross-linked polyethylene (Si-XLPE) powder with better thermoplastic performance and abundant cross-linked network points was attained by using solid-state shear mechanochemical (S3M) technology and it was added into high-density polyethylene (HDPE) matrix to prepare Si-XLPE/HDPE tubes by a rotation extrusion rheometer. SEM and 2D-SAXS experiments showed that the presence of Si-XLPE and rotation extrusion facilitated the formation of stable shish-kebabs which deviated from the axial direction in polyethylene (PE) tubes. This result was interpreted that introduction of Si-XLPE in PE tubes provided abundant molecular cross-linked network structures, which suppressed the thermal movement and relaxation of oriented molecular chains owing to intermolecular interaction. Moreover, the axial and hoop flow field further promoted orientation of the permanent cross-linked network entanglement points and formation of more stable cluster-like shish structures in the off-axial direction during the rotation extrusion process. Besides, our experimental results had also ascertained that molecular orientation and shish-kebabs in off-axial direction should be the primary responsibility for the remarkable enhancement of hoop torsional strength in PE tubes. Hoop torsional strength of PE tubes adding Si-XLPE reached 19.58 MPa when the mandrel rotation rate was 30 r.p.m., while that of conventional extruded PE tubes was only 9.83 MPa. As a consequence, PE tubes with excellent performance were prepared under the combined effect of Si-XLPE and rotation extrusion.
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Affiliation(s)
- Fasen Sun
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, People's Republic of China
| | - Jia Guo
- State Key Laboratory of Special Functional Waterproof Materials, Beijing Oriental Yuhong Waterproof Technology Co., Ltd, No. 2 Shaling Section, Shunping Road, Beijing 100020, Peoples' Republic of China
| | - Yijun Li
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, People's Republic of China
| | - Shibing Bai
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, People's Republic of China
| | - Qi Wang
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, People's Republic of China
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Zhu H, Fu L, He L, Zhang J, Zhang L, Yang L, Li Y, Zhao Y, Wang Y, Mo H, Shen J. Polyurethane–Cardiolipin Nanoparticle-Modified Decellularized Scaffold-Based Vascular Patches for Tissue Engineering Applications. ACS APPLIED BIO MATERIALS 2019; 2:1696-1702. [DOI: 10.1021/acsabm.9b00079] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Haomiao Zhu
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, National and Local Joint Engineering Research Center of Biomedical Functional Materials, Jiangsu Engineering Research Center for Biomedical Function Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China
| | - Lei Fu
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, National and Local Joint Engineering Research Center of Biomedical Functional Materials, Jiangsu Engineering Research Center for Biomedical Function Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China
| | - Lei He
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, National and Local Joint Engineering Research Center of Biomedical Functional Materials, Jiangsu Engineering Research Center for Biomedical Function Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China
| | - Jun Zhang
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, National and Local Joint Engineering Research Center of Biomedical Functional Materials, Jiangsu Engineering Research Center for Biomedical Function Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China
| | - Luxia Zhang
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, National and Local Joint Engineering Research Center of Biomedical Functional Materials, Jiangsu Engineering Research Center for Biomedical Function Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China
| | - Lutao Yang
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, National and Local Joint Engineering Research Center of Biomedical Functional Materials, Jiangsu Engineering Research Center for Biomedical Function Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China
| | - Yajuan Li
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, National and Local Joint Engineering Research Center of Biomedical Functional Materials, Jiangsu Engineering Research Center for Biomedical Function Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China
| | - Yue Zhao
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, National and Local Joint Engineering Research Center of Biomedical Functional Materials, Jiangsu Engineering Research Center for Biomedical Function Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China
| | - Yutong Wang
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Hong Mo
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, National and Local Joint Engineering Research Center of Biomedical Functional Materials, Jiangsu Engineering Research Center for Biomedical Function Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China
| | - Jian Shen
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, National and Local Joint Engineering Research Center of Biomedical Functional Materials, Jiangsu Engineering Research Center for Biomedical Function Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China
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12
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Chen J, Ning C, Zhou Z, Yu P, Zhu Y, Tan G, Mao C. Nanomaterials as photothermal therapeutic agents. PROGRESS IN MATERIALS SCIENCE 2019; 99:1-26. [PMID: 30568319 PMCID: PMC6295417 DOI: 10.1016/j.pmatsci.2018.07.005] [Citation(s) in RCA: 331] [Impact Index Per Article: 66.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Curing cancer has been one of the greatest conundrums in the modern medical field. To reduce side-effects associated with the traditional cancer therapy such as radiotherapy and chemotherapy, photothermal therapy (PTT) has been recognized as one of the most promising treatments for cancer over recent years. PTT relies on ablation agents such as nanomaterials with a photothermal effect, for converting light into heat. In this way, elevated temperature could kill cancer cells while avoiding significant side effects on normal cells. This theory works because normal cells have a higher heat tolerance than cancer cells. Thus, nanomaterials with photothermal effects have attracted enormous attention due to their selectivity and non-invasive attributes. This review article summarizes the current status of employing nanomaterials with photothermal effects for anti-cancer treatment. Mechanisms of the photothermal effect and various factors affecting photothermal performance will be discussed. Efficient and selective PTT is believed to play an increasingly prominent role in cancer treatment. Moreover, merging PTT with other methods of cancer therapies is also discussed as a future trend.
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Affiliation(s)
- Junqi Chen
- College of Material Science and Engineering, South China University of Technology, Guangzhou 510641, China
- Guangdong Key Laboratory for Biomedical Engineering, Guangzhou 510641, China
| | - Chengyun Ning
- College of Material Science and Engineering, South China University of Technology, Guangzhou 510641, China
- Guangdong Key Laboratory for Biomedical Engineering, Guangzhou 510641, China
| | - Zhengnan Zhou
- College of Material Science and Engineering, South China University of Technology, Guangzhou 510641, China
- Guangdong Key Laboratory for Biomedical Engineering, Guangzhou 510641, China
| | - Peng Yu
- College of Material Science and Engineering, South China University of Technology, Guangzhou 510641, China
- Guangdong Key Laboratory for Biomedical Engineering, Guangzhou 510641, China
| | - Ye Zhu
- Department of Chemistry & Biochemistry, Stephenson Life Sciences Research Center, Institute for Biomedical Engineering, Science and Technology, University of Oklahoma, Oklahoma, United States
| | - Guoxin Tan
- Institute of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China
| | - Chuanbin Mao
- Department of Chemistry & Biochemistry, Stephenson Life Sciences Research Center, Institute for Biomedical Engineering, Science and Technology, University of Oklahoma, Oklahoma, United States
- School of Materials Science and Engineering, Zhejiang University, Hangzhou, Zhejiang 310027, China
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13
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Mesoporous bioactive glass-polyurethane nanocomposites as reservoirs for sustained drug delivery. Colloids Surf B Biointerfaces 2018; 172:806-811. [PMID: 30352378 DOI: 10.1016/j.colsurfb.2018.10.030] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2018] [Revised: 09/08/2018] [Accepted: 10/10/2018] [Indexed: 12/14/2022]
Abstract
The materials capable of sustained drug release are highly desired in the biomedical field, and for this purpose, mesoporous bioactive glass (MBG) and polyurethanes (PUs) are being used along with various other materials. However, MBG is highly brittle and PUs suffer from the lower tensile strength value. Therefore, to overcome these shortcomings, bioactive nanocomposites were designed and fabricated by using MBG and biodegradable PUs. MBG with variable percentages was used as filler in arginine and starch-based PU matrices. The structural, mechanical and physicochemical properties were evaluated by fourier transform infrared (FTIR) spectroscopy, thermogravimetric analysis (TGA), stress-strain curves and MTT assay. All the nanocomposites exhibited high cell viability (96-100%) and are therefore designated as biocompatible. The young's modulus is in the range of 0.5-0.8 MPa, which perfectly matches with that of cancellous bones. The nanocomposites were further studied for sustained drug delivery of an anti-cancer drug, imatinib. There was no burst effect and 52-84% of the drug was released over a period of three weeks. Consequently, these nanocomposites behaved as reservoirs for sustained drug release and can be applied for reducing the dose frequency where required.
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Ribeiro KL, Frías IAM, Franco OL, Dias SC, Sousa-Junior AA, Silva ON, Bakuzis AF, Oliveira MDL, Andrade CAS. Clavanin A-bioconjugated Fe 3O 4/Silane core-shell nanoparticles for thermal ablation of bacterial biofilms. Colloids Surf B Biointerfaces 2018; 169:72-81. [PMID: 29751343 DOI: 10.1016/j.colsurfb.2018.04.055] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2017] [Revised: 03/13/2018] [Accepted: 04/26/2018] [Indexed: 01/27/2023]
Abstract
The use of central venous catheters (CVC) is highly associated with nosocomial blood infections and its use largely requires a systematic assessment of benefits and risks. Bacterial contamination of these tubes is frequent and may result in development of microbial consortia also known as biofilm. The woven nature of biofilm provides a practical defense against antimicrobial agents, facilitating bacterial dissemination through the patient's body and development of antimicrobial resistance. In this work, the authors describe the modification of CVC tubing by immobilizing Fe3O4-aminosilane core-shell nanoparticles functionalized with antimicrobial peptide clavanin A (clavA) as an antimicrobial prophylactic towards Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa and Klebsiella pneumoniae. Its anti-biofilm-attachment characteristic relies in clavA natural activity to disrupt the bacterial lipidic membrane. The aminosilane shell prevents iron leaching, which is an important nutrient for bacterial growth. Fe3O4-clavA-modified CVCs showed to decrease Gram-negative bacteria attachment up to 90% when compared to control clean CVC. Additionally, when hyperthermal treatment is triggered for 5 min at 80 °C in a tubing that already presents bacterial biofilm (CVC-BF), the viability of attached bacteria reduces up to 88%, providing an efficient solution to avoid changing catheter.
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Affiliation(s)
- Kalline L Ribeiro
- Programa de Pós-Graduação em Inovação Terapêutica, Universidade Federal de Pernambuco, 50670-901 Recife, PE, Brazil.
| | - Isaac A M Frías
- Rede Pesquisa em Biotecnologia e Biodiversidade Pró-Centro-Oeste, Instituto Nacional de Ciência e Tecnologia, Universidade Federal de Pernambuco, Brazil.
| | - Octavio L Franco
- Centro de Análise Proteômicas e Bioquímicas de Brasília, Universidade Católica de Brasília, Brasília, DF, Brazil; S-Inova Biotech, Pós-graduação em Biotecnologia, Universidade Católica Dom Bosco, Campo Grande, MS, Brazil.
| | - Simoni C Dias
- Centro de Análise Proteômicas e Bioquímicas de Brasília, Universidade Católica de Brasília, Brasília, DF, Brazil; Pós-Graduação em Biologia Animal, Campus Darcy Ribeiro, Universidade de Brasilia, DF, Brazil.
| | | | - Osmar N Silva
- S-Inova Biotech, Pós-graduação em Biotecnologia, Universidade Católica Dom Bosco, Campo Grande, MS, Brazil.
| | - Andris F Bakuzis
- Instituto de Física, Universidade Federal de Goiás, 74690-900 Goiânia, GO, Brazil.
| | - Maria D L Oliveira
- Programa de Pós-Graduação em Inovação Terapêutica, Universidade Federal de Pernambuco, 50670-901 Recife, PE, Brazil; Departamento de Bioquímica, Universidade Federal de Pernambuco, 50670-901 Recife, PE, Brazil.
| | - Cesar A S Andrade
- Programa de Pós-Graduação em Inovação Terapêutica, Universidade Federal de Pernambuco, 50670-901 Recife, PE, Brazil; Departamento de Bioquímica, Universidade Federal de Pernambuco, 50670-901 Recife, PE, Brazil.
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15
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Zhang J, Wang Y, Liu C, Feng F, Wang D, Mo H, Si L, Wei G, Shen J. Polyurethane/polyurethane nanoparticle-modified expanded poly(tetrafluoroethylene) vascular patches promote endothelialization. J Biomed Mater Res A 2018; 106:2131-2140. [DOI: 10.1002/jbm.a.36419] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2017] [Revised: 03/23/2018] [Accepted: 03/27/2018] [Indexed: 02/04/2023]
Affiliation(s)
- Jun Zhang
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, College of Chemistry and Materials Science, Nanjing Normal University; Nanjing 210023 People's Republic of China
| | - Yutong Wang
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, College of Chemistry and Materials Science, Nanjing Normal University; Nanjing 210023 People's Republic of China
- College of Materials Science and Engineering; Nanjing Forestry University; Nanjing 210037 People's Republic of China
| | - Cheng Liu
- Medical School, Nanjing University; Nanjing 210093 People's Republic of China
| | - Fuling Feng
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, College of Chemistry and Materials Science, Nanjing Normal University; Nanjing 210023 People's Republic of China
| | - Dawei Wang
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, College of Chemistry and Materials Science, Nanjing Normal University; Nanjing 210023 People's Republic of China
| | - Hong Mo
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, College of Chemistry and Materials Science, Nanjing Normal University; Nanjing 210023 People's Republic of China
| | - Ling Si
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, College of Chemistry and Materials Science, Nanjing Normal University; Nanjing 210023 People's Republic of China
| | - Guo Wei
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, College of Chemistry and Materials Science, Nanjing Normal University; Nanjing 210023 People's Republic of China
| | - Jian Shen
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, College of Chemistry and Materials Science, Nanjing Normal University; Nanjing 210023 People's Republic of China
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16
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Zhang J, Liu C, Feng F, Wang D, Lu S, Wei G, Mo H, Qiao T. A PC–PU nanoparticle/PU/decellularized scaffold composite vascular patch: Synergistically optimized overall performance promotes endothelialization. Colloids Surf B Biointerfaces 2017; 160:192-200. [DOI: 10.1016/j.colsurfb.2017.09.009] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2017] [Revised: 08/30/2017] [Accepted: 09/04/2017] [Indexed: 01/08/2023]
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17
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Synthesis and bioimaging of biodegradable red fluorescent organic nanoparticles with aggregation-induced emission characteristics. J Colloid Interface Sci 2017; 508:248-253. [DOI: 10.1016/j.jcis.2017.08.060] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Revised: 08/17/2017] [Accepted: 08/17/2017] [Indexed: 01/17/2023]
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18
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Eftekhari BS, Karkhaneh A, Alizadeh A. Physically Targeted Intravenous Polyurethane Nanoparticles for Controlled Release of Atorvastatin Calcium. IRANIAN BIOMEDICAL JOURNAL 2017; 21:369-79. [PMID: 28532144 PMCID: PMC5572433 DOI: 10.18869/acadpub.ibj.21.6.369] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Background: Intravenous drug delivery is an advantageous choice for rapid administration, immediate drug effect, and avoidance of first-pass metabolism in oral drug delivery. In this study, the synthesis, formulation, and characterization of atorvastatin-loaded polyurethane (PU) nanoparticles were investigated for intravenous route of administration. Method: First, PU was synthesized and characterized. Second, nanoparticles were prepared in four different ratios of drug to polymer through two different techniques, including emulsion-diffusion and single-emulsion. Finally, particle size and polydispersity index, shape and surface morphology, drug entrapment efficiency (EE), drug loading, and in vitro release were evaluated by dynamics light scattering, scanning electron microscopy, and UV visible spectroscopy, respectively. Results: Within two methods, the prepared nanoparticles had a spherical shape and a smooth surface with a diversity of size ranged from 174.04 nm to 277.24 nm in emulsion-diffusion and from 306.5 nm to 393.12 in the single-emulsion method. The highest EE was 84.76%, for (1:4) sample in the emulsion-diffusion method. It has also been shown that in vitro release of nanoparticles, using the emulsion-diffusion method, was sustained up to eight days by two mechanisms: drug diffusion and polymer relaxation. Conclusion: PU nanoparticles, that were prepared by the emulsion-diffusion method, could be used as effective carriers for the controlled drug delivery of poorly water soluble drugs such as atorvastatin calcium.
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Affiliation(s)
| | - Akbar Karkhaneh
- Biomedical Engineering Department, Amirkabir University of Technology, Tehran, Iran
| | - Ali Alizadeh
- Nanotechnology Research Center, Sharif University of Technology, Tehran, Iran
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Pyo SH, Wang P, Hwang HH, Zhu W, Warner J, Chen S. Continuous Optical 3D Printing of Green Aliphatic Polyurethanes. ACS APPLIED MATERIALS & INTERFACES 2017; 9:836-844. [PMID: 27935681 DOI: 10.1021/acsami.6b12500] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Photosensitive diurethanes were prepared from a green chemistry synthesis pathway based on methacrylate-functionalized six-membered cyclic carbonate and biogenic amines. A continuous optical 3D printing method for the diurethanes was developed to create user-defined gradient stiffness and smooth complex surface microstructures in seconds. The green chemistry-derived polyurethane (gPU) showed high optical transparency, and we demonstrate the ability to tune the material stiffness of the printed structure along a gradient by controlling the exposure time and selecting various amine compounds. High-resolution 3D biomimetic structures with smooth curves and complex contours were printed using our gPU. High cell viability (over 95%) was demonstrated during cytocompatibility testing using C3H 10T1/2 cells seeded directly on the printed structures.
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Affiliation(s)
- Sang-Hyun Pyo
- Department of Biotechnology, Center for Chemistry and Chemical Engineering, Lund University , Box 124, 221 00 Lund, Sweden
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20
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Bioinspired Polyethersulfone Membrane Design via Blending with Functional Polyurethane. INT J POLYM SCI 2017. [DOI: 10.1155/2017/2158124] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Polyurethanes (PUs) are currently considered to be biocompatible materials but limited by a low resistance to thrombus. We therefore design a heparin-like PU (HLPU) to modify polyethersulfone (PES) membranes approaching integrated antifouling and antithrombotic properties by bioinspiration of heparin structure. Poly(vinyl pyrrolidone)-HLPU (PVP-HLPU) was synthesized via reversible addition-fragmentation chain transfer polymerization of VP using PU as a macroinitiator and then sulfonated by concentrated H2SO4. FTIR and NMR results demonstrated the successful synthesis of PVP-HLPU. By incorporation of PVP-HLPU, the cross-sectional structure of PES composite membranes altered from finger-like structure to sponge-like structure resulting in tunable permeability. The increased hydrophilicity verified by water contact angles benefited both the permeability and antifouling property. As a consequence, the composite membranes showed good blood compatibility, including decreased protein adsorption, suppressed platelet adhesion, lowered thrombin-antithrombin III generation, reduced complement activation, and prolonged clotting times. Interestingly, the PVP-capped HLPU showed better blood compatibility compared to polyethyleneglycol-capped and citric acid-capped HLPUs. The results demonstrated the enhanced antifouling and antithrombotic properties of PES hemodialysis membranes by the introduction of functional HLPUs. Also, the proposed method may forward the fabrication of hemocompatible membranes via bioinspired surface design.
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Wang YC, Fang F, Wu YK, Ai XL, Lan T, Liang RC, Zhang Y, Trishul NM, He M, You C, Yu C, Tan H. Waterborne biodegradable polyurethane 3-dimensional porous scaffold for rat cerebral tissue regeneration. RSC Adv 2016. [DOI: 10.1039/c5ra20181k] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
It was demonstrated for the first time that WBPU 3D scaffold had axonal and synaptic regeneration abilities in rat brains.
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Wang C, Zheng Y, Sun Y, Fan J, Qin Q, Zhao Z. A novel biodegradable polyurethane based on poly(3-hydroxybutyrate-co-3-hydroxyvalerate) and poly(ethylene glycol) as promising biomaterials with the improvement of mechanical properties and hemocompatibility. Polym Chem 2016. [DOI: 10.1039/c6py01131d] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel biodegradable PHBV-based polyurethane was designed and synthesized by using PHBV, MDI and PEG.
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Affiliation(s)
- Cai Wang
- School of Materials Science and Engineering
- University of Science and Technology Beijing
- Beijing 100083
- PR China
| | - Yudong Zheng
- School of Materials Science and Engineering
- University of Science and Technology Beijing
- Beijing 100083
- PR China
| | - Yi Sun
- School of Materials Science and Engineering
- University of Science and Technology Beijing
- Beijing 100083
- PR China
| | - Jinsheng Fan
- School of Materials Science and Engineering
- University of Science and Technology Beijing
- Beijing 100083
- PR China
| | - Qiujing Qin
- School of Materials Science and Engineering
- University of Science and Technology Beijing
- Beijing 100083
- PR China
| | - Zhenjiang Zhao
- School of Materials Science and Engineering
- University of Science and Technology Beijing
- Beijing 100083
- PR China
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