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Čuk N, Simončič B, Fink R, Tomšič B. Bacterial Adhesion to Natural and Synthetic Fibre-Forming Polymers: Influence of Material Properties. Polymers (Basel) 2024; 16:2409. [PMID: 39274042 PMCID: PMC11397841 DOI: 10.3390/polym16172409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2024] [Revised: 08/19/2024] [Accepted: 08/22/2024] [Indexed: 09/16/2024] Open
Abstract
Polymer-based textiles have a major impact on human well-being, as they provide the desired functional protection and aesthetic comfort when worn. However, natural and synthetic polymer-based textiles can also pose serious health risks, as they are surfaces that allow the adhesion of various bacteria, including pathogenic bacteria. To minimise these problems, antibacterial chemical treatments are generally applicable in the case of polymer-based textiles. However, to avoid the use of potentially toxic chemicals, sustainable approaches require the customised design of non-adhesive polymer-based textiles, considering their chemical, physicochemical, constructional, and textural properties. Before designing, several articles are required to gain sufficient knowledge of the described object. Despite the urgent need to combat bacteria (on polymer-based textiles), which pose a serious global health risk, only a few review articles have been published that address bacterial adhesion in the context of superhydrophobic and antibacterial textile materials, while only one review article holistically addresses the textile factors and their influence on this phenomenon. The aim of this review article is to expand the insufficient knowledge about bacterial adhesion to polymer-based textiles on the basis of theoretical findings and real examples through a high degree of structuring, simplification, holistic consideration, and visualization. Therefore, this review provides an insight into the mechanisms involved in bacterial adhesion and a comprehensive overview of the influence of different textile factors, such as chemical composition, hydrophilicity/hydrophobicity, surface charge, surface free energy, roughness, and porosity, on bacterial adhesion. To emphasise the importance of the synergistic effect of the combined textile factors, examples of the influence of hydrophilicity/hydrophobicity in combination with surface charge, surface roughness, and porosity are discussed. From the review, it can be concluded that the combination of hydrophilicity/hydrophobicity and the surface charge of textile fibres and bacteria is crucial for bacterial adhesion, with roughness and porosity being the most important factors among the constructive and textural properties of polymer-based textiles.
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Affiliation(s)
- Nina Čuk
- Faculty of Natural Sciences and Engineering, University of Ljubljana, Aškerčeva cesta 12, 1000 Ljubljana, Slovenia
| | - Barbara Simončič
- Faculty of Natural Sciences and Engineering, University of Ljubljana, Aškerčeva cesta 12, 1000 Ljubljana, Slovenia
| | - Rok Fink
- Faculty of Health Sciences, University of Ljubljana, Zdravstvena pot 5, 1000 Ljubljana, Slovenia
| | - Brigita Tomšič
- Faculty of Natural Sciences and Engineering, University of Ljubljana, Aškerčeva cesta 12, 1000 Ljubljana, Slovenia
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2
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Fong C, Andersen MJ, Kunesh E, Leonard E, Durand D, Coombs R, Flores-Mireles AL, Howell C. Effect of free liquid layer quantity on bacteria and protein adhesion to liquid infused polymers. Biointerphases 2024; 19:041003. [PMID: 39136648 PMCID: PMC11324329 DOI: 10.1116/6.0003776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2024] [Revised: 07/09/2024] [Accepted: 07/22/2024] [Indexed: 08/16/2024] Open
Abstract
Liquid-infused polymers are recognized for their ability to repel foulants, making them promising for biomedical applications including catheter-associated urinary tract infections (CAUTIs). However, the impact of the quantity of free liquid layer covering the surface on protein and bacterial adhesion is not well understood. Here, we explore how the amount of free silicone liquid layer in infused silicone catheter materials influences the adhesion of bacteria and proteins relevant to CAUTIs. To alter the quantity of the free liquid layer, we either physically removed excess liquid from fully infused catheter materials or partially infused them. We then evaluated the impact on bacterial and host protein adhesion. Physical removal of the free liquid layer from the fully infused samples reduced the height of the liquid layer from 60 μm to below detection limits and silicone liquid loss into the environment by approximately 64% compared to controls, without significantly increasing the deposition of protein fibrinogen or the adhesion of the common uropathogen Enterococcus faecalis. Partially infused samples showed even greater reductions in liquid loss: samples infused to 70%-80% of their maximum capacity exhibited about an 85% decrease in liquid loss compared to fully infused controls. Notably, samples with more than 70% infusion did not show significant increases in fibrinogen or E. faecalis adhesion. These findings suggest that adjusting the levels of the free liquid layer in infused polymers can influence protein and bacterial adhesion on their surfaces. Moreover, removing the free liquid layer can effectively reduce liquid loss from these polymers while maintaining their functionality.
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Affiliation(s)
- ChunKi Fong
- Author to whom correspondence should be addressed:
| | - Marissa Jeme Andersen
- Department of Biological Sciences and Department of Chemistry and Biochemistry, College of Science, Notre Dame University, South Bend, Indiana 46556
| | - Emma Kunesh
- Department of Chemical and Biomedical Engineering, Maine College of Engineering and Computing, University of Maine, Orono, Maine 04469
| | - Evan Leonard
- Department of Chemical and Biomedical Engineering, Maine College of Engineering and Computing, University of Maine, Orono, Maine 04469
| | - Donovan Durand
- Department of Chemical and Biomedical Engineering, Maine College of Engineering and Computing, University of Maine, Orono, Maine 04469
| | - Rachel Coombs
- Department of Chemical and Biomedical Engineering, Maine College of Engineering and Computing, University of Maine, Orono, Maine 04469
| | - Ana Lidia Flores-Mireles
- Department of Biological Sciences and Department of Chemistry and Biochemistry, College of Science, Notre Dame University, South Bend, Indiana 46556
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3
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Zhang S, Wang Y, Meng K, Zheng X, Li Y, Chen H. Enhanced Anticoagulation of Hierarchy Liquid Infused Surfaces in Blood Flow. ACS APPLIED MATERIALS & INTERFACES 2023; 15:55447-55455. [PMID: 37975805 DOI: 10.1021/acsami.3c13462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2023]
Abstract
Liquid infused surfaces (LIS) hold remarkable potential in anticoagulation. However, liquid loss of LIS in the bloodstream remains a challenge toward its clinical application. Here, micronano hierarchy structures are obtained on the titanium alloy substrate by regulating the microspheres' distribution. When the gap between the microspheres is smaller than the diameter of the red blood cell (RBC), the LIS is more stable under the blood wash and presents a better anticoagulation performance. The proper interval is found to prevent the RBCs from entering the gap and remove the liquid on the surface. The retained thickness of the liquid film is measured by the atomic force microscopy (AFM) technique. The LIS is applied on the front guide vane of an artificial heart pump and exhibits significant improvement on anticoagulation in the blood circulation in vitro for 25 h. The techniques and findings can be used to optimize the anticoagulation performance of LIS-related biomedical implant devices.
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Affiliation(s)
- Shuguang Zhang
- Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China
| | - Yuhe Wang
- Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China
| | - Kuilin Meng
- Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China
| | - Xiaobing Zheng
- Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China
| | - Yongjian Li
- Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China
| | - Haosheng Chen
- Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China
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Hong JK, Gresham IJ, Daniel D, Waterhouse A, Neto C. Visualizing a Nanoscale Lubricant Layer under Blood Flow. ACS APPLIED MATERIALS & INTERFACES 2023; 15:56433-56441. [PMID: 37975828 DOI: 10.1021/acsami.3c11898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2023]
Abstract
Tethered-liquid perfluorocarbons (TLPs) are a class of liquid-infused surfaces with the ability to reduce blood clot formation (thrombosis) on blood-contacting medical devices. TLP comprises a tethered perfluorocarbon (TP) infused with a liquid perfluorocarbon (LP); this LP must be retained to maintain the antithrombotic properties of the layer. However, the stability of the LP layer remains in question, particularly for medical devices under blood flow. In this study, the lubricant thickness is spatially mapped and quantified in situ through confocal dual-wavelength reflection interference contrast microscopy. TLP coatings prepared on glass substrates are exposed to the flow of 37% glycerol/water mixtures (v/v) or whole blood at a shear strain rate of around 2900 s-1 to mimic physiological conditions (similar to flow conditions found in coronary arteries). Excess lubricant (>2 μm film thickness) is removed upon commencement of flow. For untreated glass, the lubricant is completely depleted after 1 min of shear flow. However, on optimized TLP surfaces, nanoscale films of lubricants (thickness between 100 nm and 2 μm) are retained over many tens of minutes of flow. The nanoscale films conform to the underlying structure of the TP layer and are sufficient to prevent the adhesion of red blood cells and platelets.
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Affiliation(s)
- Jun Ki Hong
- School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia
- School of Medical Science, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW 2006, Australia
- Heart Research Institute, Newtown, NSW 2042, Australia
- The Charles Perkins Centre, The University of Sydney, Sydney, NSW 2006, Australia
- Nano Institute, The University of Sydney, Sydney, NSW 2006, Australia
| | - Isaac J Gresham
- School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia
- Nano Institute, The University of Sydney, Sydney, NSW 2006, Australia
| | - Dan Daniel
- Institute of Materials Research and Engineering, Agency for Science, Technology, and Research (A*STAR), 2 Fusionopolis Way, Innovis, Singapore 138634, Singapore
- Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
| | - Anna Waterhouse
- School of Medical Science, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW 2006, Australia
- Heart Research Institute, Newtown, NSW 2042, Australia
- The Charles Perkins Centre, The University of Sydney, Sydney, NSW 2006, Australia
- Nano Institute, The University of Sydney, Sydney, NSW 2006, Australia
| | - Chiara Neto
- School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia
- Nano Institute, The University of Sydney, Sydney, NSW 2006, Australia
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5
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Lin FC, van de Wouw HL, Campàs O, Sletten EM, Zink JI. Synthesis of Fluorous Ferrofluids and Effects of the Nanoparticle Coatings on Field- and Temperature-Dependent Magnetizations. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2023; 35:7957-7966. [PMID: 37840777 PMCID: PMC10569041 DOI: 10.1021/acs.chemmater.3c01172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 09/13/2023] [Indexed: 10/17/2023]
Abstract
Ferrofluids have been extensively employed in industrial, environmental, and biomedical areas. Among them, fluorous ferrofluids are of particular interest because of the biorthogonal nature of perfluorocarbons (PFCs). However, the noninteracting nature of PFCs as well as challenges in functionalization of nanoparticle surfaces with fluorous ligands has limited their applications, especially in biomedicine. In particular, commercially available fluorous ferrofluids are stabilized using ionic surfactants with charged groups that physically interact with a wide range of charged biological molecules. In this paper, we developed a unique two-phase ligand attachment strategy to render stable fluorous ferrofluids using nonionic surfactants. The superparamagnetic Fe3O4 or MnFe2O4 core of the magnetic nanoparticles, the magnetic component of the ferrofluid, was coated with a silica shell containing abundant surface hydroxyl groups, thereby enabling the installation of fluorous ligands through stable covalent, neutral, siloxane bonds. We explored chemistry-material relationships between different ligands and PFC solvents and found that low-molecular-weight ligands can assist with the installation of high-molecular-weight ligands (4000-8000 g/mol), allowing us to systematically control the size and thickness of ligand functionalization on the nanoparticle surface. By zero-field-cooled magnetization measurements, we studied how the ligands affect magnetic dipole orientation forces and observed a curve flattening that is only associated with the ferrofluids. This work provided insight into ferrofluids' dependence on interparticle interactions and contributed a methodology to synthesize fluorous ferrofluids with nonionic surfactants that exhibit both magnetic and chemical stability. We believe that the doped MnFe2O4 fluorous ferrofluid has the highest combination of stability and magnetization reported to date.
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Affiliation(s)
- Fang-Chu Lin
- Department
of Chemistry and Biochemistry, University
of California Los Angeles, Los Angeles, California 90095, United States
- California
Nanosystems Institute, University of California
Los Angeles, Los Angeles, California 90095, United States
| | - Heidi L. van de Wouw
- Department
of Chemistry and Biochemistry, University
of California Los Angeles, Los Angeles, California 90095, United States
- California
Nanosystems Institute, University of California
Los Angeles, Los Angeles, California 90095, United States
| | - Otger Campàs
- Cluster
of Excellence Physics of Life, TU Dresden, Dresden 01307, Germany
- Max
Planck Institute of Molecular Cell Biology and Genetics, Dresden 01307, Germany
- Center
for Systems Biology Dresden, Dresden 01307, Germany
- Department
of Mechanical Engineering, University of
California Santa Barbara, Santa
Barbara, California 93106, United States
| | - Ellen M. Sletten
- Department
of Chemistry and Biochemistry, University
of California Los Angeles, Los Angeles, California 90095, United States
- California
Nanosystems Institute, University of California
Los Angeles, Los Angeles, California 90095, United States
| | - Jeffrey I. Zink
- Department
of Chemistry and Biochemistry, University
of California Los Angeles, Los Angeles, California 90095, United States
- California
Nanosystems Institute, University of California
Los Angeles, Los Angeles, California 90095, United States
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6
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Fong C, Andersen MJ, Kunesh E, Leonard E, Durand D, Coombs R, Flores-Mireles AL, Howell C. Removal of Free Liquid Layer from Liquid-Infused Catheters Reduces Silicone Loss into the Environment while Maintaining Adhesion Resistance. MEDRXIV : THE PREPRINT SERVER FOR HEALTH SCIENCES 2023:2023.09.14.23295548. [PMID: 37790393 PMCID: PMC10543054 DOI: 10.1101/2023.09.14.23295548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/05/2023]
Abstract
Silicone urinary catheters infused with silicone liquid offer an effective alternative to antibiotic coatings, reducing microbial adhesion while decreasing bladder colonization and systemic dissemination. However, loss of free silicone liquid from the surface into the host system is undesirable. To reduce the potential for liquid loss, free silicone liquid was removed from the surface of liquid-infused catheters by either removing excess liquid from fully infused samples or by partial infusion. The effect on bacterial and host protein adhesion was then assessed. Removing the free liquid from fully infused samples resulted in a ~64% decrease in liquid loss into the environment compared to controls, with no significant increase in deposition of the host protein fibrinogen or the adhesion of the common uropathogen Enterococcus faecalis. Partially infusing samples decreased liquid loss as total liquid content decreased, with samples infused to 70-80% of their maximum capacity showing a ~85% reduction in liquid loss compared to fully infused controls. Furthermore, samples above 70% infusion showed no significant increase in fibrinogen or E. faecalis adhesion. Together, the results suggest that eliminating free liquid layer, mechanically or through partial infusion, can reduce liquid loss from liquid-infused catheters while preserving functionality.
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Affiliation(s)
- ChunKi Fong
- Department of Chemical and Biomedical Engineering, Maine College of Engineering and Computing, University of Maine, ME 04469
- Graduate School of Biomedical Science and Engineering, University of Maine, ME 04469
| | - Marissa Jeme Andersen
- Department of Biological Sciences and Department of Chemistry and Biochemistry, College of Science, Notre Dame University, IN 46556 USA
| | - Emma Kunesh
- Department of Chemical and Biomedical Engineering, Maine College of Engineering and Computing, University of Maine, ME 04469
| | - Evan Leonard
- Department of Chemical and Biomedical Engineering, Maine College of Engineering and Computing, University of Maine, ME 04469
| | - Donovan Durand
- Department of Chemical and Biomedical Engineering, Maine College of Engineering and Computing, University of Maine, ME 04469
| | - Rachel Coombs
- Department of Chemical and Biomedical Engineering, Maine College of Engineering and Computing, University of Maine, ME 04469
| | - Ana Lidia Flores-Mireles
- Department of Biological Sciences and Department of Chemistry and Biochemistry, College of Science, Notre Dame University, IN 46556 USA
| | - Caitlin Howell
- Department of Chemical and Biomedical Engineering, Maine College of Engineering and Computing, University of Maine, ME 04469
- Graduate School of Biomedical Science and Engineering, University of Maine, ME 04469
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7
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Flores P, McBride SA, Galazka JM, Varanasi KK, Zea L. Biofilm formation of Pseudomonas aeruginosa in spaceflight is minimized on lubricant impregnated surfaces. NPJ Microgravity 2023; 9:66. [PMID: 37587131 PMCID: PMC10432549 DOI: 10.1038/s41526-023-00316-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Accepted: 08/02/2023] [Indexed: 08/18/2023] Open
Abstract
The undesirable, yet inevitable, presence of bacterial biofilms in spacecraft poses a risk to the proper functioning of systems and to astronauts' health. To mitigate the risks that arise from them, it is important to understand biofilms' behavior in microgravity. As part of the Space Biofilms project, biofilms of Pseudomonas aeruginosa were grown in spaceflight over material surfaces. Stainless Steel 316 (SS316) and passivated SS316 were tested for their relevance as spaceflight hardware components, while a lubricant impregnated surface (LIS) was tested as potential biofilm control strategy. The morphology and gene expression of biofilms were characterized. Biofilms in microgravity are less robust than on Earth. LIS strongly inhibits biofilm formation compared to SS. Furthermore, this effect is even greater in spaceflight than on Earth, making LIS a promising option for spacecraft use. Transcriptomic profiles for the different conditions are presented, and potential mechanisms of biofilm reduction on LIS are discussed.
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Affiliation(s)
- Pamela Flores
- BioServe Space Technologies, Aerospace Engineering Sciences Department, University of Colorado Boulder, Boulder, CO, 80309, USA.
- Molecular, Cellular, and Developmental Biology Department, University of Colorado Boulder, Boulder, CO, 80309, USA.
| | | | - Jonathan M Galazka
- Space Biosciences Division, NASA Ames Research Center, Moffett Field, CA, 94035, USA
| | - Kripa K Varanasi
- Massachusetts Institute of Technology (MIT), Cambridge, MA, 02139, USA.
| | - Luis Zea
- BioServe Space Technologies, Aerospace Engineering Sciences Department, University of Colorado Boulder, Boulder, CO, 80309, USA.
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8
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Patel H, Pavlichenko I, Grinthal A, Zhang CT, Alvarenga J, Kreder MJ, Weaver JC, Ji Q, Ling CWF, Choy J, Li Z, Black NL, Bispo PJM, Lewis JA, Kozin ED, Aizenberg J, Remenschneider AK. Design of medical tympanostomy conduits with selective fluid transport properties. Sci Transl Med 2023; 15:eadd9779. [PMID: 37018418 DOI: 10.1126/scitranslmed.add9779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2023]
Abstract
Implantable tubes, shunts, and other medical conduits are crucial for treating a wide range of conditions from ears and eyes to brain and liver but often impose serious risks of device infection, obstruction, migration, unreliable function, and tissue damage. Efforts to alleviate these complications remain at an impasse because of fundamentally conflicting design requirements: Millimeter-scale size is required to minimize invasiveness but exacerbates occlusion and malfunction. Here, we present a rational design strategy that reconciles these trade-offs in an implantable tube that is even smaller than the current standard of care. Using tympanostomy tubes (ear tubes) as an exemplary case, we developed an iterative screening algorithm and show how unique curved lumen geometries of the liquid-infused conduit can be designed to co-optimize drug delivery, effusion drainage, water resistance, and biocontamination/ingrowth prevention in a single subcapillary-length-scale device. Through extensive in vitro studies, we demonstrate that the engineered tubes enabled selective uni- and bidirectional fluid transport; nearly eliminated adhesion and growth of common pathogenic bacteria, blood, and cells; and prevented tissue ingrowth. The engineered tubes also enabled complete eardrum healing and hearing preservation and exhibited more efficient and rapid antibiotic delivery to the middle ear in healthy chinchillas compared with current tympanostomy tubes, without resulting in ototoxicity at up to 24 weeks. The design principle and optimization algorithm presented here may enable tubes to be customized for a wide range of patient needs.
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Affiliation(s)
- Haritosh Patel
- Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, Boston, MA 02134, USA
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02115, USA
| | - Ida Pavlichenko
- Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, Boston, MA 02134, USA
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02115, USA
| | - Alison Grinthal
- Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, Boston, MA 02134, USA
| | - Cathy T Zhang
- Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, Boston, MA 02134, USA
| | - Jack Alvarenga
- Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, Boston, MA 02134, USA
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02115, USA
| | - Michael J Kreder
- Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, Boston, MA 02134, USA
| | - James C Weaver
- Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, Boston, MA 02134, USA
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02115, USA
| | - Qin Ji
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02115, USA
| | - Christopher W F Ling
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02115, USA
| | - Joseph Choy
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02115, USA
| | - Zihan Li
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02115, USA
| | - Nicole L Black
- Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, Boston, MA 02134, USA
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02115, USA
| | - Paulo J M Bispo
- Department of Ophthalmology, Massachusetts Eye and Ear, Boston, MA 02114, USA
- Harvard Medical School, Harvard University, Boston, MA 02115, USA
| | - Jennifer A Lewis
- Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, Boston, MA 02134, USA
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02115, USA
| | - Elliott D Kozin
- Harvard Medical School, Harvard University, Boston, MA 02115, USA
- Department of Otolaryngology-Head and Neck Surgery, Massachusetts Eye and Ear, Boston, MA 02114, USA
| | - Joanna Aizenberg
- Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, Boston, MA 02134, USA
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02115, USA
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA
| | - Aaron K Remenschneider
- Harvard Medical School, Harvard University, Boston, MA 02115, USA
- Department of Otolaryngology-Head and Neck Surgery, Massachusetts Eye and Ear, Boston, MA 02114, USA
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9
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Lu HC, You JL, Liao YC. Total Liquid Transfer with Enhanced Contact Line Slippage. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:14238-14248. [PMID: 36350766 DOI: 10.1021/acs.langmuir.2c02238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
A new surface treatment method is developed to achieve total liquid transfer. The transfer process of a liquid droplet is recorded through high-speed photography and analyzed via image analysis to investigate the hydrodynamic interactions. For a pristine PMMA surface, a viscous and viscoelastic liquid facilitates transfer by increased viscous and inertial forces and delayed liquid bridge breakage but is limited by slow contact line slippage. Hydrophobic surface treatments can increase contact line slippage and the receding angle to achieve transfer ratios up to 98%. However, pinning and contact angle hysteresis from surface roughness features limit liquid transfer, especially for smaller droplets and higher separation velocities. A lubricant-infused surface treatment with PDMS and a thin layer of less viscous silicone oil provides a smooth, homogeneous surface with fast slippage, low contact angle hysteresis, and only a slight oil wetting ridge. Liquid could then transfer at high ratios (∼99.9%), regardless of droplet size and separation velocity. Finally, complete transfer liquid from indented cells is demonstrated to show the potential of this surface modification method for gravure printing.
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Affiliation(s)
- Hsuan-Chin Lu
- Department of Chemical Engineering, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei 10617, Taiwan
| | - Jhu-Lin You
- Institute of Polymer Science and Engineering, National Taiwan University, Taipei 10617, Taiwan
- Department of Chemical & Materials Engineering, Chung Cheng Institute of Technology, National Defense University, Taoyuan 335, Taiwan
| | - Ying-Chih Liao
- Department of Chemical Engineering, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei 10617, Taiwan
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10
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Regan DP, Fong C, Bond ACS, Desjardins C, Hardcastle J, Hung SH, Holmes AP, Schiffman JD, Maginnis MS, Howell C. Improved Recovery of Captured Airborne Bacteria and Viruses with Liquid-Coated Air Filters. ACS APPLIED MATERIALS & INTERFACES 2022; 14:50543-50556. [PMID: 36331290 PMCID: PMC10028737 DOI: 10.1021/acsami.2c14754] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
The COVID-19 pandemic has revealed the importance of the detection of airborne pathogens. Here, we present composite air filters featuring a bioinspired liquid coating that facilitates the removal of captured aerosolized bacteria and viruses for further analysis. We tested three types of air filters: commercial polytetrafluoroethylene (PTFE), which is well known for creating stable liquid coatings, commercial high-efficiency particulate air (HEPA) filters, which are widely used, and in-house-manufactured cellulose nanofiber mats (CNFMs), which are made from sustainable materials. All filters were coated with omniphobic fluorinated liquid to maximize the release of pathogens. We found that coating both the PTFE and HEPA filters with liquid improved the rate at which Escherichia coli was recovered using a physical removal process compared to uncoated controls. Notably, the coated HEPA filters also increased the total number of recovered cells by 57%. Coating the CNFM filters did not improve either the rate of release or the total number of captured cells. The most promising materials, the liquid-coated HEPA, filters were then evaluated for their ability to facilitate the removal of pathogenic viruses via a chemical removal process. Recovery of infectious JC polyomavirus, a nonenveloped virus that attacks the central nervous system, was increased by 92% over uncoated controls; however, there was no significant difference in the total amount of genomic material recovered compared to that of controls. In contrast, significantly more genomic material was recovered for SARS-CoV-2, the airborne, enveloped virus, which causes COVID-19, from liquid-coated filters. Although the amount of infectious SARS-CoV-2 recovered was 58% higher, these results were not significantly different from uncoated filters due to high variability. These results suggest that the efficient recovery of airborne pathogens from liquid-coated filters could improve air sampling efforts, enhancing biosurveillance and global pathogen early warning.
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Affiliation(s)
- Daniel P Regan
- Department of Chemical and Biomedical Engineering, University of Maine, 5737 Jenness Hall, Orono, Maine04469, United States
- Graduate School of Biomedical Science and Engineering, University of Maine, 42 Stodder Hall, Orono, Maine04469, United States
| | - ChunKi Fong
- Graduate School of Biomedical Science and Engineering, University of Maine, 42 Stodder Hall, Orono, Maine04469, United States
| | - Avery C S Bond
- Department of Molecular and Biomedical Sciences, University of Maine, 320 Hitchner Hall, Orono, Maine04469, United States
| | - Claudia Desjardins
- Department of Molecular and Biomedical Sciences, University of Maine, 320 Hitchner Hall, Orono, Maine04469, United States
| | - Justin Hardcastle
- Graduate School of Biomedical Science and Engineering, University of Maine, 42 Stodder Hall, Orono, Maine04469, United States
| | - Shao-Hsiang Hung
- Department of Chemical Engineering, University of Massachusetts Amherst, Amherst, Massachusetts01003-9303, United States
| | - Andrew P Holmes
- Cooperative Extension, University of Maine, 17 Godfrey Drive, Orono, Maine04473, United States
| | - Jessica D Schiffman
- Department of Chemical Engineering, University of Massachusetts Amherst, Amherst, Massachusetts01003-9303, United States
| | - Melissa S Maginnis
- Graduate School of Biomedical Science and Engineering, University of Maine, 42 Stodder Hall, Orono, Maine04469, United States
- Department of Molecular and Biomedical Sciences, University of Maine, 320 Hitchner Hall, Orono, Maine04469, United States
| | - Caitlin Howell
- Department of Chemical and Biomedical Engineering, University of Maine, 5737 Jenness Hall, Orono, Maine04469, United States
- Graduate School of Biomedical Science and Engineering, University of Maine, 42 Stodder Hall, Orono, Maine04469, United States
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11
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Hemocompatibility challenge of membrane oxygenator for artificial lung technology. Acta Biomater 2022; 152:19-46. [PMID: 36089235 DOI: 10.1016/j.actbio.2022.09.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Revised: 08/25/2022] [Accepted: 09/04/2022] [Indexed: 11/24/2022]
Abstract
The artificial lung (AL) technology is one of the membrane-based artificial organs that partly augments lung functions, i.e. blood oxygenation and CO2 removal. It is generally employed as an extracorporeal membrane oxygenation (ECMO) device to treat acute and chronic lung-failure patients, and the recent outbreak of the COVID-19 pandemic has re-emphasized the importance of this technology. The principal component in AL is the polymeric membrane oxygenator that facilitates the O2/CO2 exchange with the blood. Despite the considerable improvement in anti-thrombogenic biomaterials in other applications (e.g., stents), AL research has not advanced at the same rate. This is partly because AL research requires interdisciplinary knowledge in biomaterials and membrane technology. Some of the promising biomaterials with reasonable hemocompatibility - such as emerging fluoropolymers of extremely low surface energy - must first be fabricated into membranes to exhibit effective gas exchange performance. As AL membranes must also demonstrate high hemocompatibility in tandem, it is essential to test the membranes using in-vitro hemocompatibility experiments before in-vivo test. Hence, it is vital to have a reliable in-vitro experimental protocol that can be reasonably correlated with the in-vivo results. However, current in-vitro AL studies are unsystematic to allow a consistent comparison with in-vivo results. More specifically, current literature on AL biomaterial in-vitro hemocompatibility data are not quantitatively comparable due to the use of unstandardized and unreliable protocols. Such a wide gap has been the main bottleneck in the improvement of AL research, preventing promising biomaterials from reaching clinical trials. This review summarizes the current state-of-the-art and status of AL technology from membrane researcher perspectives. Particularly, most of the reported in-vitro experiments to assess AL membrane hemocompatibility are compiled and critically compared to suggest the most reliable method suitable for AL biomaterial research. Also, a brief review of current approaches to improve AL hemocompatibility is summarized. STATEMENT OF SIGNIFICANCE: The importance of Artificial Lung (AL) technology has been re-emphasized in the time of the COVID-19 pandemic. The utmost bottleneck in the current AL technology is the poor hemocompatibility of the polymer membrane used for O2/CO2 gas exchange, limiting its use in the long-term. Unfortunately, most of the in-vitro AL experiments are unsystematic, irreproducible, and unreliable. There are no standardized in-vitro hemocompatibility characterization protocols for quantitative comparison between AL biomaterials. In this review, we tackled this bottleneck by compiling the scattered in-vitro data and suggesting the most suitable experimental protocol to obtain reliable and comparable hemocompatibility results. To the best of our knowledge, this is the first review paper focusing on the hemocompatibility challenge of AL technology.
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12
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Peppou-Chapman S, Vega-Sánchez C, Neto C. Detection of Nanobubbles on Lubricant-Infused Surfaces Using AFM Meniscus Force Measurements. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:10234-10243. [PMID: 35959766 DOI: 10.1021/acs.langmuir.2c01411] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
So far, the presence of nanobubbles on lubricant-infused surfaces (LIS) has been overlooked, because of the difficulty in detecting them in such a complex system. We recently showed that anomalously large interfacial slip measured on LIS is explained by the presence of nanobubbles [Vega-Sánchez, Peppou-Chapman, Zhu and Neto, Nat. Commun., 2022 13, 351]. Crucial to drawing this conclusion was the use of atomic force microscopy (AFM) force-distance spectroscopy (meniscus force measurements) to directly image nanobubbles on LIS. This technique provided vital direct evidence of the spontaneous nucleation of nanobubbles on lubricant-infused hydrophobic surfaces. In this paper, we describe in detail the data collection and analysis of AFM meniscus force measurements on LIS and show how these powerful measurements can quantify both the thickness and distribution of multiple coexisting fluid layers (i.e., gas and oil) over a nanostructured surface. Using this technique, thousands of force curves were automatically analyzed. The results show that the interfacial tension of the nanobubbles is reduced from 52 ± 9 mN m-1 to 39 ± 4 mN m-1 by the presence of the silicone oil layer.
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Affiliation(s)
- Sam Peppou-Chapman
- School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia
- University of Sydney Nano Institute, The University of Sydney, Sydney, NSW 2006, Australia
| | - Christopher Vega-Sánchez
- School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia
- University of Sydney Nano Institute, The University of Sydney, Sydney, NSW 2006, Australia
- School of Electromechanical Engineering, Costa Rica Institute of Technology, Cartago 159-7050, Costa Rica
| | - Chiara Neto
- School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia
- University of Sydney Nano Institute, The University of Sydney, Sydney, NSW 2006, Australia
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13
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Agarwal H, Quinn LJ, Walter SC, Polaske TJ, Chang DH, Palecek SP, Blackwell HE, Lynn DM. Slippery Antifouling Polymer Coatings Fabricated Entirely from Biodegradable and Biocompatible Components. ACS APPLIED MATERIALS & INTERFACES 2022; 14:17940-17949. [PMID: 35394750 PMCID: PMC9310543 DOI: 10.1021/acsami.1c25218] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
We report the design of slippery liquid-infused porous surfaces (SLIPS) fabricated from building blocks that are biodegradable, edible, or generally regarded to be biocompatible. Our approach involves infusion of lubricating oils, including food oils, into nanofiber-based mats fabricated by electrospinning or blow spinning of poly(ε-caprolactone), a hydrophobic biodegradable polymer used widely in medical implants and drug delivery devices. This approach leads to durable and biodegradable SLIPS that prevent fouling by liquids and other materials, including microbial pathogens, on objects of arbitrary shape, size, and topography. This degradable polymer approach also provides practical means to design "controlled-release" SLIPS that release molecular cargo at rates that can be manipulated by the properties of the infused oils (e.g., viscosity or chemical structure). Together, our results provide new designs and introduce useful properties and behaviors to antifouling SLIPS, address important issues related to biocompatibility and environmental persistence, and thus advance new potential applications, including the use of slippery materials for food packaging, industrial and marine coatings, and biomedical implants.
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Affiliation(s)
- Harshit Agarwal
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison, 1415 Engineering Dr., Madison, Wisconsin 53706, United States
| | - La'Darious J Quinn
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Ave., Madison, Wisconsin 53706, United States
| | - Sahana C Walter
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison, 1415 Engineering Dr., Madison, Wisconsin 53706, United States
| | - Thomas J Polaske
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Ave., Madison, Wisconsin 53706, United States
| | - Douglas H Chang
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison, 1415 Engineering Dr., Madison, Wisconsin 53706, United States
| | - Sean P Palecek
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison, 1415 Engineering Dr., Madison, Wisconsin 53706, United States
| | - Helen E Blackwell
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Ave., Madison, Wisconsin 53706, United States
| | - David M Lynn
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison, 1415 Engineering Dr., Madison, Wisconsin 53706, United States
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Ave., Madison, Wisconsin 53706, United States
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14
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Enhancing osseointegration and mitigating bacterial biofilms on medical-grade titanium with chitosan-conjugated liquid-infused coatings. Sci Rep 2022; 12:5380. [PMID: 35354896 PMCID: PMC8967836 DOI: 10.1038/s41598-022-09378-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Accepted: 03/22/2022] [Indexed: 01/03/2023] Open
Abstract
Titanium alloys, in particular, medical-grade Ti-6Al-4 V, are heavily used in orthopaedic applications due to their high moduli, strength, and biocompatibility. Implant infection can result in biofilm formation and failure of prosthesis. The formation of a biofilm on implants protects bacteria from antibiotics and the immune response, resulting in the propagation of the infection and ultimately resulting in device failure. Recently, slippery liquid-infused surfaces (LIS) have been investigated for their stable liquid interface, which provides excellent repellent properties to suppress biofilm formation. One of the current limitations of LIS coatings lies in the indistinctive repellency of bone cells in orthopaedic applications, resulting in poor tissue integration and bone ingrowth with the implant. Here, we report a chitosan impregnated LIS coating that facilitates cell adhesion while preventing biofilm formation. The fabricated coating displayed high contact angles (108.2 ± 5.2°) and low sliding angles (3.56 ± 4.3°). Elemental analysis obtained using X-ray photoelectron spectroscopy (XPS) confirmed the availability of fluorine and nitrogen, indicating the presence of fluorosilane and chitosan in the final coating. Furthermore, our results suggest that chitosan-conjugated LIS increased cell adhesion of osteoblast-like SaOS-2 cells and significantly promoted proliferation (a fourfold increase at 7-day incubation) compared to conventional titanium liquid-infused surfaces. Furthermore, the chitosan conjugated LIS significantly reduced biofilm formation of methicillin-resistant Staphylococcus aureus (MRSA) by up to 50% and 75% when compared to untreated titanium and chitosan-coated titanium, respectively. The engineered coating can be easily modified with other biopolymers or capture molecules to be applied to other biomaterials where tissue integration and biofilm prevention are needed.
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15
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Liquid-Infused Porous Film Self-Assembly for Superior Light-Transmitting and Anti-Adhesion. MICROMACHINES 2022; 13:mi13040540. [PMID: 35457845 PMCID: PMC9025966 DOI: 10.3390/mi13040540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/05/2022] [Revised: 03/24/2022] [Accepted: 03/28/2022] [Indexed: 12/10/2022]
Abstract
Liquid-Infused Surfaces (LISs), particularly known for their liquid-repelling feature, have demonstrated plenty of applications in the medical, marine, and energy fields. To improve the durability and transparency highly demanded on glass-based vision devices such as an endoscope, this study proposed a novel self-assembly method to fabricate well-ordered porous Poly-Styrene (PS)/Styrene–Butadiene–Styrene (SBS) films by simply dripping the PS/SBS dichloromethane solutions onto the glass before spinning. The effects of the solutions’ concentrations and spin speeds on the porous structure were experimentally investigated. The results showed that a certain mass ratio of PS/SBS can make the structure of the ordered porous film more regular and denser under the optimal solution concentration and spin-coating speed. Superior transparency and durability were also realized by dripping silicone oil on the porous film to build a liquid-infused surface. Applications of the as-prepared surface on devices like endoscopes, viewfinders, and goggles have been explored respectively.
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16
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Wang X, Huang J, Guo Z. Overview of the development of slippery surfaces: Lubricants from presence to absence. Adv Colloid Interface Sci 2022; 301:102602. [PMID: 35085985 DOI: 10.1016/j.cis.2022.102602] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Revised: 01/07/2022] [Accepted: 01/11/2022] [Indexed: 12/17/2022]
Abstract
The superhydrophobic surfaces inspired by the lotus have excellent performances and are known for their low contact angle hysteresis and smooth surfaces. However, there are still some problems, such as the unstable structure, poor durability, high product cost and so on that need to be improved. Those issues can be avoided via liquid-infused surfaces(LIS), which are inspired by Nepenthes and consist of a mico-nano structured substrate and a smooth continuous atomic-grade lubricant. Compared with superhydrophobic surfaces, LIS not only achieves the same hydrophobic properties but also has smaller contact angle hysteresis, smoother surface, more stable structure and lower preparation cost. Although the existence of a lubricant layer improves the performance of the material, it also leaves a hidden danger, which is easy to lose and leads to the deterioration of the durability of the material. Therefore, the lubricant-free slipper materials have attracted more and more attention in recent years due to their low volatility, good durability and excellent lubrication performance. In this review, the types of LIS lubricants and their physicochemical properties were summarized at the beginning and then the applications of LIS in various fields were introduced. At the end of this paper, some solid lubricants and their applications were described, and the future development prospects of LIS lubricants also were expected.
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Affiliation(s)
- Xiaobo Wang
- Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei University, Wuhan 430062, People's Republic of China
| | - Jinxia Huang
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China.
| | - Zhiguang Guo
- Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei University, Wuhan 430062, People's Republic of China; State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China.
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17
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Li M, Zheng C, Zhang S, Wu B, Ding K, Huang X, Lei Y, Wang Y. A hydrophobic antifouling surface coating on bioprosthetic heart valves for enhanced antithrombogenicity. J Biomed Mater Res B Appl Biomater 2021; 110:1082-1092. [PMID: 34856067 DOI: 10.1002/jbm.b.34982] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 08/12/2021] [Accepted: 08/22/2021] [Indexed: 11/06/2022]
Abstract
Thrombosis is an important factor that causes the failure of artificial biological valves in addition to calcification and immune rejection. A hydrophobic antifouling surface can improve blood compatibility by reducing the absorption of protein. In this study, porcine pericardium was cross-linked with glycidyl methacrylate, and carbon-carbon double bonds were introduced. Then, fluoride monomer was added so that the pericardial surface would become hydrophobic and antifouling. Fluoride modification changed the hydrophilicity of the pericardium surface, and the surface water contact angle increased from 84° to 143°. Compared with unmodified pericardium, the adsorption of bovine serum albumin and fibrinogen decreased by 93.1% and 85%, respectively, and the anti-thrombogenicity was greatly enhanced.
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Affiliation(s)
- Meiling Li
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, China
| | - Cheng Zheng
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, China
| | - Shumang Zhang
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, China
| | - Binggang Wu
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, China
| | - Kailei Ding
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, China
| | - Xueyu Huang
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, China
| | - Yang Lei
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, China
| | - Yunbing Wang
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, China
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18
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Agarwal H, Polaske TJ, Sánchez-Velázquez G, Blackwell HE, Lynn DM. Slippery nanoemulsion-infused porous surfaces (SNIPS): anti-fouling coatings that can host and sustain the release of water-soluble agents. Chem Commun (Camb) 2021; 57:12691-12694. [PMID: 34781330 PMCID: PMC8851892 DOI: 10.1039/d1cc04645d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
We report the design of 'slippery' nanoemulsion-infused porous surfaces (SNIPS). These materials are strongly anti-fouling to a broad range of substances, including microorganisms. Infusion with water-in-oil nanoemulsions also endows these slippery coatings with the ability to host and control or sustain the release of water-soluble agents, including polymers, peptides, and nucleic acids, opening the door to new applications of liquid-infused materials.
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Affiliation(s)
- Harshit Agarwal
- Department of Chemical & Biological Engineering, University of Wisconsin-Madison, 1415 Engineering Dr., Madison, WI 53706, USA.
| | - Thomas J Polaske
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Ave., Madison, WI 53706, USA
| | - Gabriel Sánchez-Velázquez
- Department of Chemical & Biological Engineering, University of Wisconsin-Madison, 1415 Engineering Dr., Madison, WI 53706, USA.
| | - Helen E Blackwell
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Ave., Madison, WI 53706, USA
| | - David M Lynn
- Department of Chemical & Biological Engineering, University of Wisconsin-Madison, 1415 Engineering Dr., Madison, WI 53706, USA.
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Ave., Madison, WI 53706, USA
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19
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Agarwal H, Nyffeler KE, Blackwell HE, Lynn DM. Fabrication of Slippery Liquid-Infused Coatings in Flexible Narrow-Bore Tubing. ACS APPLIED MATERIALS & INTERFACES 2021; 13:55621-55632. [PMID: 34775755 PMCID: PMC8840327 DOI: 10.1021/acsami.1c14662] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
We report a layer-by-layer suction-and-flow approach that enables the fabrication of polymer-based "slippery" liquid-infused porous surfaces (SLIPS) in the confined luminal spaces of flexible, narrow-bore tubing. These SLIPS-coated tubes can prevent or strongly reduce surface fouling after prolonged contact, storage, or flow of a broad range of complex fluids and viscoelastic materials, including many that are relevant in the contexts of medical devices (e.g., blood and urine), food processing (beverages and fluids), and other commercial and industrial applications. The robust and mechanically compliant nature of the nanoporous coating used to host the lubricating oil phase allows these coated tubes to be bent, flexed, and coiled repeatedly without affecting their inherent slippery and antifouling behaviors. Our results also show that SLIPS-coated tubes can prevent the formation of bacterial biofilms after prolonged and repeated flow-based exposure to the human pathogen Staphylococcus aureus and that the anti-biofouling properties of these coated tubes can be further improved or prolonged by coupling this approach with strategies that permit the sustained release of broad-spectrum antimicrobial agents. The suction-and-flow approach used here enables the application of slippery coatings in the confined luminal spaces of narrow-bore tubing that are difficult to access using several other methods for the fabrication of liquid-infused coatings and can be applied to tubing of arbitrary length and diameter. We anticipate that the materials and approaches reported here will prove useful for reducing or preventing biofouling, process fouling, and the clogging or occlusion of tubing in a wide range of consumer, industrial, and healthcare-oriented applications.
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Affiliation(s)
- Harshit Agarwal
- Department of Chemical & Biological Engineering, University of Wisconsin-Madison, 1415 Engineering Dr., Madison, Wisconsin 53706, United States
| | - Kayleigh E Nyffeler
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
- Microbiology Doctoral Training Program, University of Wisconsin-Madison, 1550 Linden Dr., Madison, Wisconsin 53706, United States
| | - Helen E Blackwell
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - David M Lynn
- Department of Chemical & Biological Engineering, University of Wisconsin-Madison, 1415 Engineering Dr., Madison, Wisconsin 53706, United States
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
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20
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Laney SK, Michalska M, Li T, Ramirez FV, Portnoi M, Oh J, Thayne IG, Parkin IP, Tiwari MK, Papakonstantinou I. Delayed Lubricant Depletion of Slippery Liquid Infused Porous Surfaces Using Precision Nanostructures. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:10071-10078. [PMID: 34286995 DOI: 10.1021/acs.langmuir.1c01310] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Slippery liquid infused porous surfaces (SLIPS) are an important class of repellent materials, comprising micro/nanotextures infused with a lubricating liquid. Unlike superhydrophobic surfaces, SLIPS do not rely on a stable air-liquid interface and thus can better manage low surface tension fluids, are less susceptible to damage under physical stress, and are able to self-heal. However, these collective properties are only efficient as long as the lubricant remains infused, which has proved challenging. We hypothesized that, in comparison to a nanohole and nanopillar morphology, the "hybrid" morphology of a hole within a nanopillar, namely a nanotube, would be able to retain and redistribute lubricant more effectively, owing to capillary forces trapping a reservoir of lubricant within the tube, while lubricant between tubes can facilitate redistribution to depleted areas. By virtue of recent fabrication advances in spacer defined intrinsic multiple patterning (SDIMP), we fabricated an array of silicon nanotubes and equivalent arrays of nanoholes and nanopillars (pitch, 560 nm; height, 2 μm). After infusing the nanostructures (prerendered hydrophobic) with lubricant Krytox 1525, we probed the lubricant stability under dynamic conditions and correlated the degree of the lubricant film discontinuity to changes in the contact angle hysteresis. As a proof of concept, the durability test, which involved consecutive deposition of droplets onto the surface amounting to 0.5 L, revealed 2-fold and 1.5-fold enhancements of lubricant retention in nanotubes in comparison to nanopillars and nanoholes, respectively, showing a clear trajectory for prolonging the lifetime of a slippery surface.
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Affiliation(s)
- Sophia K Laney
- Photonic Innovations Lab, Department of Electronic & Electrical Engineering, University College London, Torrington Place, London WC1E 7JE, U.K
| | - Martyna Michalska
- Photonic Innovations Lab, Department of Electronic & Electrical Engineering, University College London, Torrington Place, London WC1E 7JE, U.K
| | - Tao Li
- Photonic Innovations Lab, Department of Electronic & Electrical Engineering, University College London, Torrington Place, London WC1E 7JE, U.K
| | - Francisco V Ramirez
- Photonic Innovations Lab, Department of Electronic & Electrical Engineering, University College London, Torrington Place, London WC1E 7JE, U.K
| | - Mark Portnoi
- Photonic Innovations Lab, Department of Electronic & Electrical Engineering, University College London, Torrington Place, London WC1E 7JE, U.K
| | - Junho Oh
- Nanoengineered Systems Laboratory, Department of Mechanical Engineering, University College London, Torrington Place, London WC1E 7JE, U.K
- Department of Mechanical Engineering, Hanyang University, Ansan 15588, South Korea
| | - Iain G Thayne
- James Watt School of Engineering, University of Glasgow, Glasgow G12 8LT, U.K
| | - Ivan P Parkin
- Department of Chemistry, University College London, Torrington Place, London WC1E 7JE, U.K
| | - Manish K Tiwari
- Nanoengineered Systems Laboratory, Department of Mechanical Engineering, University College London, Torrington Place, London WC1E 7JE, U.K
- Wellcome/EPSRC Centre for Interventional and Surgical Sciences (WEISS), University College London, London W1W 7TS, U.K
| | - Ioannis Papakonstantinou
- Photonic Innovations Lab, Department of Electronic & Electrical Engineering, University College London, Torrington Place, London WC1E 7JE, U.K
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21
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Zhang P, Liu Y, Liao C, Luo H, Jing G. Drops Sliding on Non-SLIPS Structures. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:9053-9058. [PMID: 34269063 DOI: 10.1021/acs.langmuir.1c01063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Inspired by a plant leaf, a slippery liquid-infused porous surface (SLIPS) exhibits attractive nonwetting and self-cleaning abilities. However, rigorous requirements for the infused liquid layer and its inevitable loss limit its practical use. Here, we propose a model structure defined as a non-SLIPS by introducing solid nanostructures covered with a discontinuous lubricant film. This non-SLIPS tuned by solid wettability achieves the excellent self-cleaning feature with a small sliding angle comparable to the counterpart of a typical SLIPS. This sliding angle α* can be further reduced to a saturated plateau by a slight enhancement of hydrophobicity of the solid nanostructures. Interestingly, the sliding velocity remains almost constant for all of these non-SLIPS samples at a given tilt angle, independent of solid wettability. We formulate the slippery mechanism by defining an energy barrier responsible for the sliding initiation on the non-SLIPS. This energy barrier of the non-SLIPS is correlated, with a qualitative agreement, to the molecular adsorption on the solid nanostructures. The antibiological contamination is confirmed for this non-SLIPS, indicating its excellent self-cleaning ability. The findings suggest that the new surfaces, even with the gradual depletion of the infused oil layer, exhibit the nondegradation of the self-cleaning performance.
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Affiliation(s)
- Peixin Zhang
- School of Physics, State Key Laboratory of Photon-Technology in Western China Energy, Northwest University, Xi'an 710127, China
| | - Yanan Liu
- School of Physics, State Key Laboratory of Photon-Technology in Western China Energy, Northwest University, Xi'an 710127, China
| | - Chunyan Liao
- School of Physics, State Key Laboratory of Photon-Technology in Western China Energy, Northwest University, Xi'an 710127, China
| | - Hao Luo
- School of Physics, State Key Laboratory of Photon-Technology in Western China Energy, Northwest University, Xi'an 710127, China
| | - Guangyin Jing
- School of Physics, State Key Laboratory of Photon-Technology in Western China Energy, Northwest University, Xi'an 710127, China
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22
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Es-Souni M, Es-Souni M, Bakhti H, Gülses A, Fischer-Brandies H, Açil Y, Wiltfang J, Flörke C. A Bacteria and Cell Repellent Zwitterionic Polymer Coating on Titanium Base Substrates towards Smart Implant Devices. Polymers (Basel) 2021; 13:2472. [PMID: 34372075 PMCID: PMC8347386 DOI: 10.3390/polym13152472] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 07/17/2021] [Accepted: 07/18/2021] [Indexed: 12/12/2022] Open
Abstract
Biofouling and biofilm formation on implant surfaces are serious issues that more than often lead to inflammatory reactions and the necessity of lengthy post-operation treatments or the removal of the implant, thus entailing a protracted healing process. This issue may be tackled with a biocompatible polymeric coating that at the same time prevents biofouling. In this work, oxygen plasma-activated silanized titanium substrates are coated with poly(sulfobetaine methacrylate), a zwitterionic antibiofouling polymer, using photopolymerization. The characterization of polymer films includes FT-IR, AFM, and adhesion strength measurements, where adhesion strength is analyzed using a cylindrical flat punch indenter and water contact angle (WCA) measurements. Both cytotoxicity analysis with primary human fibroblasts and fluorescence microscopy with fibroblasts and plaque bacteria are also performed is this work, with each procedure including seeding on coated and control surfaces. The film morphology obtained by the AFM shows a fine structure akin to nanoropes. The coatings can resist ultrasonic and sterilization treatments. The adhesion strength properties substantially increase when the films are soaked in 0.51 M of NaCl prior to testing when compared to deionized water. The coatings are superhydrophilic with a WCA of 10° that increases to 15° after dry aging. The viability of fibroblasts in the presence of coated substrates is comparable to that of bare titanium. When in direct contact with fibroblasts or bacteria, marginal adhesion for both species occurs on coating imperfections. Because photopolymerization can easily be adapted to surface patterning, smart devices that promote both osseointegration (in non-coated areas) and prevent cell overgrowth and biofilm formation (in coated areas) demonstrate practical potential.
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Affiliation(s)
- Mona Es-Souni
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, CAU, 24103 Kiel, Germany; (M.E.-S.); (A.G.); (Y.A.); (J.W.); (C.F.)
| | - Martha Es-Souni
- Department of Orthodontics, Faculty of Dentistry, CAU, 24103 Kiel, Germany;
| | - Hamzah Bakhti
- Department of Mathematics, University of Hamburg, 20146 Hamburg, Germany;
| | - Aydin Gülses
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, CAU, 24103 Kiel, Germany; (M.E.-S.); (A.G.); (Y.A.); (J.W.); (C.F.)
| | | | - Yahya Açil
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, CAU, 24103 Kiel, Germany; (M.E.-S.); (A.G.); (Y.A.); (J.W.); (C.F.)
| | - Jörg Wiltfang
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, CAU, 24103 Kiel, Germany; (M.E.-S.); (A.G.); (Y.A.); (J.W.); (C.F.)
| | - Christian Flörke
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, CAU, 24103 Kiel, Germany; (M.E.-S.); (A.G.); (Y.A.); (J.W.); (C.F.)
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23
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Agarwal H, Nyffeler KE, Manna U, Blackwell HE, Lynn DM. Liquid Crystal-Infused Porous Polymer Surfaces: A "Slippery" Soft Material Platform for the Naked-Eye Detection and Discrimination of Amphiphilic Species. ACS APPLIED MATERIALS & INTERFACES 2021; 13:33652-33663. [PMID: 34236833 PMCID: PMC8459213 DOI: 10.1021/acsami.1c08170] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
We report the design and characterization of liquid crystal (LC)-infused porous polymer membranes that can detect and report on the presence of natural and synthetic amphiphiles in aqueous solution. We demonstrate that thermotropic LCs can be infused into nanoporous polymer membranes to yield LC-infused surfaces that exhibit slippery behaviors in contact with a range of aqueous fluids. In contrast to conventional liquid-infused surfaces (LIS) or slippery liquid-infused porous surfaces (SLIPS) prepared using isotropic oils, aqueous solutions slide over the surfaces of these LC-infused materials at speeds that depend strongly upon the composition of the fluid, including the presence, concentration, or structure of a dissolved surfactant. In general, the sliding times of aqueous droplets on these LC-infused surfaces increase significantly (e.g., from times on the order of seconds to times on the order of minutes) with increasing amphiphile concentration, allowing sliding times to be used to estimate the concentration of the amphiphile. Additional experiments revealed other intrinsic and extrinsic variables or parameters that can be used to further manipulate droplet sliding times and discriminate among amphiphiles of similar structure. Our results are consistent with a physical picture that involves reversible changes in the interfacial orientation of anisotropic LCs mediated by the interfacial adsorption of amphiphiles. These materials thus permit facile "naked-eye" detection and discrimination of amphiphiles in aqueous samples using equipment no more sophisticated than a stopwatch. We demonstrate the potential utility of these LC-infused surfaces for the unaided, naked-eye detection and monitoring of amphiphilic biotoxins in small droplets of fluid extracted directly from cultures of two common bacterial pathogens (Pseudomonas aeruginosa and Staphylococcus aureus). The ability to translate molecular interactions at aqueous/LC interfaces into large and readily observed changes in the sliding times of small aqueous droplets on surfaces could open the door to new applications for antifouling, liquid-infused materials in the context of environmental sensing and other fundamental and applied areas.
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Affiliation(s)
- Harshit Agarwal
- Department of Chemical & Biological Engineering, University of Wisconsin-Madison, 1415 Engineering Drive, Madison, Wisconsin 53706, United States
| | - Kayleigh E Nyffeler
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
- Microbiology Doctoral Training Program, University of Wisconsin-Madison, 1550 Linden Drive, Madison, Wisconsin 53706, United States
| | - Uttam Manna
- Department of Chemical & Biological Engineering, University of Wisconsin-Madison, 1415 Engineering Drive, Madison, Wisconsin 53706, United States
| | - Helen E Blackwell
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - David M Lynn
- Department of Chemical & Biological Engineering, University of Wisconsin-Madison, 1415 Engineering Drive, Madison, Wisconsin 53706, United States
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
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24
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Liu KS, Kao CW, Tseng YY, Chen SK, Lin YT, Lu CJ, Liu SJ. Assessment of Antimicrobial Agents, Analgesics, and Epidermal Growth Factors-Embedded Anti-Adhesive Poly(Lactic-Co-Glycolic Acid) Nanofibrous Membranes: In vitro and in vivo Studies. Int J Nanomedicine 2021; 16:4471-4480. [PMID: 34234437 PMCID: PMC8257070 DOI: 10.2147/ijn.s318083] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Accepted: 06/15/2021] [Indexed: 02/05/2023] Open
Abstract
Background Postoperative tissue adhesion is a major concern for most surgeons and is a nearly unpreventable complication after abdominal or pelvic surgeries. This study explored the use of sandwich-structured antimicrobial agents, analgesics, and human epidermal growth factor (hEGF)-incorporated anti-adhesive poly(lactic-co-glycolic acid) nanofibrous membranes for surgical wounds. Materials and Methods Electrospinning and co-axial electrospinning techniques were utilized in fabricating the membranes. After spinning, the properties of the prepared membranes were assessed. Additionally, high-performance liquid chromatography and enzyme-linked immunosorbent assays were utilized in assessing the in vitro and in vivo liberation profiles of the pharmaceuticals and the hEGF from the membranes. Results The measured data suggest that the degradable anti-adhesive membranes discharged high levels of vancomycin/ceftazidime, ketorolac, and hEGF in vitro for more than 30, 24, and 27 days, respectively. The in vivo assessment in a rat laparotomy model indicated no adhesion in the peritoneal cavity at 14 days post-operation, demonstrating the anti-adhesive capability of the sandwich-structured nanofibrous membranes. The nanofibers also released effective levels of vancomycin, ceftazidime, and ketorolac for more than 28 days in vivo. Histological examination revealed no adverse effects. Conclusion The outcomes of this study implied that the anti-adhesive nanofibers with sustained release of antimicrobial agents, analgesics, and growth factors might offer postoperative pain relief and infection control, as well as promote postoperative healing of surgical wounds.
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Affiliation(s)
- Kuo-Sheng Liu
- Department of Thoracic and Cardiovascular Surgery, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Ching-Wei Kao
- Department of Anesthesiology, Chiayi Chang Gung Memorial Hospital, Chiayi, Taiwan
| | - Yuan-Yun Tseng
- Department of Neurosurgery, New Taipei Municipal Tu-Cheng Hospital (Built and Operated by Chang Gung Medical Foundation), New Taipei City, Taiwan
| | - Shih-Kuang Chen
- Department of Mechanical Engineering, Chang Gung University, Taoyuan, Taiwan
| | - Yu-Ting Lin
- Department of Mechanical Engineering, Chang Gung University, Taoyuan, Taiwan
| | - Chia-Jung Lu
- Department of Mechanical Engineering, Chang Gung University, Taoyuan, Taiwan.,Department of Orthopedic Surgery, Bone and Joint Research Center, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Shih-Jung Liu
- Department of Mechanical Engineering, Chang Gung University, Taoyuan, Taiwan.,Department of Orthopedic Surgery, Bone and Joint Research Center, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan
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25
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Kumar R, Massoumi H, Chug MK, Brisbois EJ. S-Nitroso- N-acetyl-l-cysteine Ethyl Ester (SNACET) Catheter Lock Solution to Reduce Catheter-Associated Infections. ACS APPLIED MATERIALS & INTERFACES 2021; 13:25813-25824. [PMID: 34029456 PMCID: PMC8735666 DOI: 10.1021/acsami.1c06427] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Antimicrobial-lock therapy is an economically viable strategy to prevent/reduce the catheter-related bloodstream infections (CRBSI) that are associated with central venous catheters (CVCs). Herein, we report the synthesis and characterization of the S-nitroso-N-acetyl-l-cysteine ethyl ester (SNACET), a nitric oxide (NO)-releasing molecule, and for the first time its application as a catheter lock solution to combat issues of bacterial infection associated with indwelling catheters. Nitric oxide is an endogenous gasotransmitter that exhibits a wide range of biological properties, including broad-spectrum antimicrobial activity. The storage stability of the SNACET and the NO release behavior of the prepared lock solution were analyzed. SNACET lock solutions with varying concentrations exhibited tuneable NO release at physiological levels for >18 h, as measured using chemiluminescence. The SNACET lock solutions were examined for their efficacy in reducing microbial adhesion after 18 h of exposure toStaphylococcus aureus (Gram-positive bacteria) andEscherichia coli (Gram-negative bacteria). SNACET lock solutions with 50 and 75 mM concentrations were found to reduce >99% (ca. 3-log) of the adhered S. aureus and E. coli adhesion to the catheter surface after 18 h. The SNACET lock solutions were evaluated in a more challenging in vitro model to evaluate the efficacy against an established microbial infection on catheter surfaces using the same bacteria strains. A >90% reduction in viable bacteria on the catheter surfaces was observed after instilling the 75 mM SNACET lock solution within the lumen of the infected catheter for only 2 h. These findings propound that SNACET lock solution is a promising biocidal agent and demonstrate the initiation of a new platform technology for NO-releasing lock solution therapy for the inhibition and treatment of catheter-related infections.
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Affiliation(s)
- Rajnish Kumar
- School of Chemical, Materials and Biomedical Engineering, University of Georgia, Athens, Georgia 30602, United States
| | - Hamed Massoumi
- School of Chemical, Materials and Biomedical Engineering, University of Georgia, Athens, Georgia 30602, United States
| | - Manjyot Kaur Chug
- School of Chemical, Materials and Biomedical Engineering, University of Georgia, Athens, Georgia 30602, United States
| | - Elizabeth J Brisbois
- School of Chemical, Materials and Biomedical Engineering, University of Georgia, Athens, Georgia 30602, United States
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26
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Khalid S, Gao A, Wang G, Chu PK, Wang H. Tuning surface topographies on biomaterials to control bacterial infection. Biomater Sci 2021; 8:6840-6857. [PMID: 32812537 DOI: 10.1039/d0bm00845a] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Microbial contamination and subsequent formation of biofilms frequently cause failure of surgical implants and a good understanding of the bacteria-surface interactions is vital to the design and safety of biomaterials. In this review, the physical and chemical factors that are involved in the various stages of implant-associated bacterial infection are described. In particular, topographical modification strategies that have been employed to mitigate bacterial adhesion via topographical mechanisms are summarized and discussed comprehensively. Recent advances have improved our understanding about bacteria-surface interactions and have enabled biomedical engineers and researchers to develop better and more effective antibacterial surfaces. The related interdisciplinary efforts are expected to continue in the quest for next-generation medical devices to attain the ultimate goal of improved clinical outcomes and reduced number of revision surgeries.
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Affiliation(s)
- Saud Khalid
- Center for Human Tissues and Organs Degeneration, Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China.
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27
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Peppou-Chapman S, Neto C. Depletion of the Lubricant from Lubricant-Infused Surfaces due to an Air/Water Interface. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:3025-3037. [PMID: 33683128 DOI: 10.1021/acs.langmuir.0c02858] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Lubricant-infused surfaces (LIS) have emerged as an innovative way to combat several modern challenges such as biofouling, ice formation, and surface drag. The favorable properties of LIS are dependent on the presence and distribution of a lubricant layer coating the underlying substrate. Unfortunately, this layer is not indefinitely stable and depletes due to external forces. Here, we study how an air/water interface depletes the lubricant from LIS as a function of lubricant wettability on the substrate by varying the chemistry of both the lubricant and the substrate. The lubricants were chosen to represent some of those most commonly used in the literature (silicone oil, perfluoropolyethers, and mineral oil). We use an optical Wilhelmy plate tensiometer to measure the contact angle of the air/water interface on the LIS in situ as the sample is driven through the air/water interface and contact angle hysteresis as a qualitative measure of lubricant depletion. This data is augmented with ex situ quantitative mapping of lubricant thickness using atomic force microscopy (AFM) meniscus force measurements. We find that a thick layer of excess lubricant is always removed in just one dip, regardless of wettability, and that lubricants that do not spread fully on the substrate deplete faster due to their dewetting into droplets. We also find that lubricants that spread onto the air/water interface are more susceptible to depletion. Finally, we investigate the effect of repeated immersions on the properties of liquidlike poly(dimethylsiloxane) (PDMS) chains tethered to glass and find that dynamic contact angles on these surfaces remain constant over several dips and therefore their low hysteresis is unlikely due to unbound polymer.
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Affiliation(s)
- Sam Peppou-Chapman
- School of Chemistry, The University of Sydney, NSW 2006, Australia
- University of Sydney Nano Institute, The University of Sydney, NSW 2006, Australia
| | - Chiara Neto
- School of Chemistry, The University of Sydney, NSW 2006, Australia
- University of Sydney Nano Institute, The University of Sydney, NSW 2006, Australia
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28
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Kasapgil E, Badv M, Cantú CA, Rahmani S, Erbil HY, Anac Sakir I, Weitz JI, Hosseini-Doust Z, Didar TF. Polysiloxane Nanofilaments Infused with Silicone Oil Prevent Bacterial Adhesion and Suppress Thrombosis on Intranasal Splints. ACS Biomater Sci Eng 2021; 7:541-552. [PMID: 33470781 DOI: 10.1021/acsbiomaterials.0c01487] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Like all biofluid-contacting medical devices, intranasal splints are highly prone to bacterial adhesion and clot formation. Despite their widespread use and the numerous complications associated with infected splints, limited success has been achieved in advancing their safety and surface biocompatibility, and, to date, no surface-coating strategy has been proposed to simultaneously enhance the antithrombogenicity and bacterial repellency of intranasal splints. Herein, we report an efficient, highly stable lubricant-infused coating for intranasal splints to render their surfaces antithrombogenic and repellent toward bacterial cells. Lubricant-infused intranasal splints were prepared by creating superhydrophobic polysiloxane nanofilament (PSnF) coatings using surface-initiated polymerization of n-propyltrichlorosilane (n-PTCS) and further infiltrating them with a silicone oil lubricant. Compared with commercially available intranasal splints, lubricant-infused, PSnF-coated splints significantly attenuated plasma and blood clot formation and prevented bacterial adhesion and biofilm formation for up to 7 days, the typical duration for which intranasal splints are kept. We further demonstrated that the performance of our engineered biointerface is independent of the underlying substrate and could be used to enhance the hemocompatibility and repellency properties of other medical implants such as medical-grade catheters.
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Affiliation(s)
- Esra Kasapgil
- Department of Materials Science and Engineering, Gebze Technical University, TR-41400 Gebze, Kocaeli, Turkey.,School of Biomedical Engineering, McMaster University, 1280 Main St W, Hamilton, Ontario, Canada L8S 4L8
| | - Maryam Badv
- School of Biomedical Engineering, McMaster University, 1280 Main St W, Hamilton, Ontario, Canada L8S 4L8.,Department of Mechanical Engineering, McMaster University, 1280 Main St W, Hamilton, Ontario, Canada L8S 4L8
| | - Claudia Alonso Cantú
- Department of Chemical Engineering, McMaster University, 1280 Main St W, Hamilton, Ontario, Canada L8S 4L8
| | - Sara Rahmani
- School of Biomedical Engineering, McMaster University, 1280 Main St W, Hamilton, Ontario, Canada L8S 4L8
| | - H Yildirim Erbil
- Department of Chemical Engineering, Gebze Technical University, TR-41400 Gebze, Kocaeli, Turkey
| | - Ilke Anac Sakir
- Department of Materials Science and Engineering, Gebze Technical University, TR-41400 Gebze, Kocaeli, Turkey
| | - Jeffrey I Weitz
- School of Biomedical Engineering, McMaster University, 1280 Main St W, Hamilton, Ontario, Canada L8S 4L8.,Department of Medicine, McMaster University, 1280 Main St W, Hamilton, Ontario, Canada L8S 4L8.,Department of Biochemistry and Biomedical Sciences, McMaster University, 1280 Main St W, Hamilton, Ontario, Canada L8S 4L8.,Thrombosis & Atherosclerosis Research Institute (TaARI), 237 Barton Street East, Hamilton, Ontario, Canada L8L 2X2
| | - Zeinab Hosseini-Doust
- School of Biomedical Engineering, McMaster University, 1280 Main St W, Hamilton, Ontario, Canada L8S 4L8.,Department of Chemical Engineering, McMaster University, 1280 Main St W, Hamilton, Ontario, Canada L8S 4L8.,Institute for Infectious Disease Research (IIDR), McMaster University, 1280 Main St W, Hamilton, Ontario, Canada L8S 4L8
| | - Tohid F Didar
- School of Biomedical Engineering, McMaster University, 1280 Main St W, Hamilton, Ontario, Canada L8S 4L8.,Department of Mechanical Engineering, McMaster University, 1280 Main St W, Hamilton, Ontario, Canada L8S 4L8.,Institute for Infectious Disease Research (IIDR), McMaster University, 1280 Main St W, Hamilton, Ontario, Canada L8S 4L8
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29
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Baumli P, D'Acunzi M, Hegner KI, Naga A, Wong WSY, Butt HJ, Vollmer D. The challenge of lubricant-replenishment on lubricant-impregnated surfaces. Adv Colloid Interface Sci 2021; 287:102329. [PMID: 33302056 DOI: 10.1016/j.cis.2020.102329] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 11/22/2020] [Accepted: 11/23/2020] [Indexed: 11/18/2022]
Abstract
Lubricant-impregnated surfaces are two-component surface coatings. One component, a fluid called the lubricant, is stabilized at a surface by the second component, the scaffold. The scaffold can either be a rough solid or a polymeric network. Drops immiscible with the lubricant, hardly pin on these surfaces. Lubricant-impregnated surfaces have been proposed as candidates for various applications, such as self-cleaning, anti-fouling, and anti-icing. The proposed applications rely on the presence of enough lubricant within the scaffold. Therefore, the quality and functionality of a surface coating are, to a large degree, given by the extent to which it prevents lubricant-depletion. This review summarizes the current findings on lubricant-depletion, lubricant-replenishment, and the resulting understanding of both processes. A multitude of different mechanisms can cause the depletion of lubricant. Lubricant can be taken along by single drops or be sheared off by liquid flowing across. Nano-interstices and scaffolds showing good chemical compatibility with the lubricant can greatly delay lubricant depletion. Often, depletion of lubricant cannot be avoided under dynamic conditions, which warrants lubricant-replenishment strategies. The strategies to replenish lubricant are presented and range from spraying or stimuli-responsive release to built-in reservoirs.
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Affiliation(s)
- Philipp Baumli
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Maria D'Acunzi
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Katharina I Hegner
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Abhinav Naga
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - William S Y Wong
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Hans-Jürgen Butt
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Doris Vollmer
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany.
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30
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Sadullah MS, Panter JR, Kusumaatmaja H. Factors controlling the pinning force of liquid droplets on liquid infused surfaces. SOFT MATTER 2020; 16:8114-8121. [PMID: 32734997 DOI: 10.1039/d0sm00766h] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Liquid infused surfaces with partially wetting lubricants have recently been exploited for numerous intriguing applications, such as for droplet manipulation, droplet collection and spontaneous motion. When partially wetting lubricants are used, the pinning force is a key factor that can strongly affect droplet mobility. Here, we derive an analytical prediction for contact angle hysteresis in the limit where the meniscus size is much smaller than the droplet, and numerically study how it is controlled by the solid fraction, the lubricant wetting angles, and the various fluid surface tensions. We further relate the contact angle hysteresis and the pinning force experienced by a droplet on a liquid infused surface, and our predictions for the critical sliding angles are consistent with existing experimental observations. Finally, we discuss why a droplet on a liquid infused surface with partially wetting lubricants typically experiences stronger pinning compared to a droplet on a classical superhydrophobic surface.
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Affiliation(s)
| | - Jack R Panter
- Department of Physics, Durham University, Durham, DH1 3LE, UK.
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31
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Bandyopadhyay S, Jones A, McLean A, Sterner M, Robbins C, Cunningham M, Walters M, Doddapaneni K, Keitel I, Gallagher C. Slippery liquid infused fluoropolymer coating for central lines to reduce catheter associated clotting and infections. Sci Rep 2020; 10:14973. [PMID: 32917923 PMCID: PMC7486915 DOI: 10.1038/s41598-020-71711-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Accepted: 08/18/2020] [Indexed: 11/08/2022] Open
Abstract
Thrombosis and infections are two grave, interrelated problems associated with the use of central venous catheters (CVL). Currently used antibiotic coated CVL has limited clinical success in resisting blood stream infection and may increase the risk of emerging antibiotic resistant strains. We report an antibiotic-free, fluoropolymer-immobilized, liquid perfluorocarbon-coated peripherally inserted central catheter (PICC) line and its effectiveness in reducing catheter associated thrombosis and pathogen colonization, as an alternative to antibiotic coated CVL. Commercially available polyurethane PICC catheter was modified by a three-step lamination process, with thin fluoropolymer layers to yield fluoropolymer-polyurethane-fluoropolymer composite structure before applying the liquid perfluorocarbon (LP). This high throughput process of modifying commercial PICC catheters with fluoropolymer is quicker, safer and shows higher thromboresistance than fluorinated, omniphobic catheter surfaces, produced by previously reported self-assembled monolayer deposition techniques. The LP immobilized on the fluoropolymer is highly durable in physiological flow conditions for over 60 days and continue to resist Staphylococcus colonization.
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Affiliation(s)
| | - Andrew Jones
- FreeFlow Medical Devices LLC, Lancaster, PA, USA
| | | | | | | | | | - Mark Walters
- Shared Material Instrumentation Facility, Duke University, Durham, NC, USA
| | | | - Isaac Keitel
- FreeFlow Medical Devices LLC, Lancaster, PA, USA
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32
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Badv M, Bayat F, Weitz JI, Didar TF. Single and multi-functional coating strategies for enhancing the biocompatibility and tissue integration of blood-contacting medical implants. Biomaterials 2020; 258:120291. [PMID: 32798745 DOI: 10.1016/j.biomaterials.2020.120291] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 06/27/2020] [Accepted: 08/01/2020] [Indexed: 12/27/2022]
Abstract
Device-associated clot formation and poor tissue integration are ongoing problems with permanent and temporary implantable medical devices. These complications lead to increased rates of mortality and morbidity and impose a burden on healthcare systems. In this review, we outline the current approaches for developing single and multi-functional surface coating techniques that aim to circumvent the limitations associated with existing blood-contacting medical devices. We focus on surface coatings that possess dual hemocompatibility and biofunctionality features and discuss their advantages and shortcomings to providing a biocompatible and biodynamic interface between the medical implant and blood. Lastly, we outline the newly developed surface modification techniques that use lubricant-infused coatings and discuss their unique potential and limitations in mitigating medical device-associated complications.
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Affiliation(s)
- Maryam Badv
- School of Biomedical Engineering, McMaster University, Hamilton, Ontario, Canada; Department of Mechanical Engineering, McMaster University, Hamilton, Ontario, Canada
| | - Fereshteh Bayat
- School of Biomedical Engineering, McMaster University, Hamilton, Ontario, Canada
| | - Jeffrey I Weitz
- School of Biomedical Engineering, McMaster University, Hamilton, Ontario, Canada; Thrombosis & Atherosclerosis Research Institute (TaARI), Hamilton, Ontario, Canada; Department of Medicine, McMaster University, Hamilton, Ontario, Canada; Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Ontario, Canada
| | - Tohid F Didar
- School of Biomedical Engineering, McMaster University, Hamilton, Ontario, Canada; Department of Mechanical Engineering, McMaster University, Hamilton, Ontario, Canada; Institute for Infectious Disease Research (IIDR), McMaster University, Hamilton, Ontario, Canada.
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33
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Paink GK, Kolle S, Le D, Weaver JC, Alvarenga J, Ahanotu O, Aizenberg J, Kim P. Dynamic Self-Repairing Hybrid Liquid-in-Solid Protective Barrier for Cementitious Materials. ACS APPLIED MATERIALS & INTERFACES 2020; 12:31922-31932. [PMID: 32531149 DOI: 10.1021/acsami.0c06357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Corrosion and surface fouling of structural materials, such as concrete, are persistent problems accelerating undesirable material degradation for many industries and infrastructures. To counteract these detrimental effects, protective coatings are frequently applied, but these solid-based coatings can degrade or become mechanically damaged over time. Such irreversible and irreparable damage on solid-based protective coatings expose underlying surfaces and bulk materials to adverse environmental stresses leading to subsequent fouling and degradation. We introduce a new concept of a hybrid liquid-in-solid protective barrier (LIB) to overcome the limitations of traditional protective coatings with broad applicability to structural materials. Through optimization of capillary forces and reduction of the interfacial energy between an upper mobile liquid and a lower immobile solid phase, a stable liquid-based protective layer is created. This provides a persistent self-repairing barrier against the infiltration of moisture and salt, in addition to omniphobic surface properties. As a model experimental test bed, we applied this concept to cementitious materials, which are commonly used as binders in concrete, and investigated how the mobile liquid phase embedded within a porous solid support contributes to the material's barrier protection and antifouling properties. Using industry standard test methods for acid resistance, chloride-ion penetrability, freeze-thaw cyclability, and mechanical durability, we demonstrate that LIBs exhibit significantly reduced water absorption and ion penetrability, improved repellency against various nonaqueous liquids, and resistance to corrosion while maintaining their required mechanical performance as structural materials.
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Affiliation(s)
- Gurminder K Paink
- Wyss Institute for Biologically Inspired Engineering, Harvard University, 58 Oxford Street, Cambridge, Massachusetts 02138, United States
| | - Stefan Kolle
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, 58 Oxford Street, Cambridge, Massachusetts 02138, United States
| | - Duy Le
- Wyss Institute for Biologically Inspired Engineering, Harvard University, 58 Oxford Street, Cambridge, Massachusetts 02138, United States
| | - James C Weaver
- Wyss Institute for Biologically Inspired Engineering, Harvard University, 58 Oxford Street, Cambridge, Massachusetts 02138, United States
| | - Jack Alvarenga
- Wyss Institute for Biologically Inspired Engineering, Harvard University, 58 Oxford Street, Cambridge, Massachusetts 02138, United States
| | - Onyemaechi Ahanotu
- Wyss Institute for Biologically Inspired Engineering, Harvard University, 58 Oxford Street, Cambridge, Massachusetts 02138, United States
| | - Joanna Aizenberg
- Wyss Institute for Biologically Inspired Engineering, Harvard University, 58 Oxford Street, Cambridge, Massachusetts 02138, United States
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, 58 Oxford Street, Cambridge, Massachusetts 02138, United States
- Department of Chemistry and Chemical Biology, Harvard University, 58 Oxford Street, Cambridge, Massachusetts 02138, United States
| | - Philseok Kim
- Wyss Institute for Biologically Inspired Engineering, Harvard University, 58 Oxford Street, Cambridge, Massachusetts 02138, United States
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34
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Marquis K, Chasse B, Regan DP, Boutiette AL, Khalil A, Howell C. Vascularized Polymers Spatially Control Bacterial Cells on Surfaces. ACTA ACUST UNITED AC 2020; 4:e1900216. [PMID: 32293124 DOI: 10.1002/adbi.201900216] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Revised: 11/05/2019] [Indexed: 11/10/2022]
Abstract
Nature uses vascular systems to permit large-area control over the functionality of surfaces that lie above them. In this work, the application of this concept to the control of a hybrid living-nonliving system is demonstrated. Defined arrangements of vascular channels are created in agar using a fugitive ink printing method. The antibiotic gentamicin is then introduced into the vascular network where it diffuses to the surface and interacts with a model system of Escherichia coli cells. The cells either live or die depending on their distance from the underlying channels, permitting spatial control over the biological system. Using single-channel systems to define critical parameters, a theoretical model is developed to define the final surface pattern based solely on the arrangement of the underlying vascular channels. The model is then successfully used to create more complex arrangements of cells at the surface. Finally, by introducing different types of active compounds into separate vascular channels, a mixture of bacterial species is separated and localized at defined points. This work demonstrates the ability of bioinspired embedded vascular systems to predictably control a biological system at a surface, laying the groundwork for future spatially and temporally controlled biointerfaces in both industry and medicine.
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Affiliation(s)
- Kayla Marquis
- Department of Chemical and Biomedical Engineering, University of Maine, 5737 Jenness Hall, Orono, ME, 04469, USA
| | - Benjamin Chasse
- Department of Chemical and Biomedical Engineering, University of Maine, 5737 Jenness Hall, Orono, ME, 04469, USA
| | - Daniel P Regan
- Department of Chemical and Biomedical Engineering, University of Maine, 5737 Jenness Hall, Orono, ME, 04469, USA.,Graduate School of Biomedical Science and Engineering, University of Maine, 5775 Stodder Hall, Orono, ME, 04469, USA
| | - Amber L Boutiette
- Department of Chemical and Biomedical Engineering, University of Maine, 5737 Jenness Hall, Orono, ME, 04469, USA
| | - Andre Khalil
- Department of Chemical and Biomedical Engineering, University of Maine, 5737 Jenness Hall, Orono, ME, 04469, USA.,Graduate School of Biomedical Science and Engineering, University of Maine, 5775 Stodder Hall, Orono, ME, 04469, USA
| | - Caitlin Howell
- Department of Chemical and Biomedical Engineering, University of Maine, 5737 Jenness Hall, Orono, ME, 04469, USA.,Graduate School of Biomedical Science and Engineering, University of Maine, 5775 Stodder Hall, Orono, ME, 04469, USA
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35
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Peppou-Chapman S, Hong JK, Waterhouse A, Neto C. Life and death of liquid-infused surfaces: a review on the choice, analysis and fate of the infused liquid layer. Chem Soc Rev 2020; 49:3688-3715. [DOI: 10.1039/d0cs00036a] [Citation(s) in RCA: 109] [Impact Index Per Article: 27.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
We review the rational choice, the analysis, the depletion and the properties imparted by the liquid layer in liquid-infused surfaces – a new class of low-adhesion surface.
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Affiliation(s)
- Sam Peppou-Chapman
- School of Chemistry
- The University of Sydney
- Australia
- The University of Sydney Nano Institute
- The University of Sydney
| | - Jun Ki Hong
- School of Chemistry
- The University of Sydney
- Australia
- The University of Sydney Nano Institute
- The University of Sydney
| | - Anna Waterhouse
- The University of Sydney Nano Institute
- The University of Sydney
- Australia
- Central Clinical School
- Faculty of Medicine and Health
| | - Chiara Neto
- School of Chemistry
- The University of Sydney
- Australia
- The University of Sydney Nano Institute
- The University of Sydney
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36
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Badv M, Alonso-Cantu C, Shakeri A, Hosseinidoust Z, Weitz JI, Didar TF. Biofunctional Lubricant-Infused Vascular Grafts Functionalized with Silanized Bio-Inks Suppress Thrombin Generation and Promote Endothelialization. ACS Biomater Sci Eng 2019; 5:6485-6496. [DOI: 10.1021/acsbiomaterials.9b01062] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
| | | | | | | | - Jeffrey I. Weitz
- Thrombosis & Atherosclerosis Research Institute (TaARI), 237 Barton Street East, Hamilton, Ontario L8L 2X2, Canada
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Villegas M, Zhang Y, Abu Jarad N, Soleymani L, Didar TF. Liquid-Infused Surfaces: A Review of Theory, Design, and Applications. ACS NANO 2019; 13:8517-8536. [PMID: 31373794 DOI: 10.1021/acsnano.9b04129] [Citation(s) in RCA: 139] [Impact Index Per Article: 27.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Due to inspiration from the Nepenthes pitcher plant, a frontier of devices has emerged with unmatched capabilities. Liquid-infused surfaces (LISs), particularly known for their liquid-repelling behavior under low tilting angles (<5°), have demonstrated a plethora of applications in medical, marine, energy, industrial, and environmental materials. This review presents recent developments of LIS technology and its prospective to define the future direction of this technology in solving tomorrow's real-life challenges. First, an introduction to the different models explaining the physical phenomena of these surfaces, their wettability, and viscous-dependent frictional forces is discussed. Then, an outline of different emerging strategies required to fabricate a stable liquid-infused interface is presented, including different substrates, lubricants, surface chemistries, and design parameters which can be tuned depending on the application. Furthermore, applications of LIS coatings in the areas of anticorrosion, antifouling, anti-icing, self-healing, droplet manipulation, and biomedical devices will be presented followed by the limitations and future direction of this technology.
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Combining the geometry of folded paper with liquid-infused polymer surfaces to concentrate and localize bacterial solutions. Biointerphases 2019; 14:041005. [PMID: 31431017 DOI: 10.1116/1.5114804] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Point-of-care (POC) detection and diagnostic platforms provide critical information about health and safety conditions in austere and resource-limited settings in which medical, military, and disaster relief operations are conducted. In this work, low-cost paper materials commonly used in POC devices are coated with liquid-infused polymer surfaces and folded to produce geometries that precisely localize complex liquid samples undergoing concentration by evaporation. Liquid-infused polymer surfaces were fabricated by infusing silicone-coated paper with a chemically compatible polydimethylsiloxane oil to create a liquid overlayer. Tests on these surfaces showed no remaining bacterial cells after exposure to a sliding droplet containing a concentrated solution of Escherichia coli or Staphylococcus aureus, while samples without a liquid layer showed adhesion of both microdroplets and individual bacterial cells. Folding of the paper substrates with liquid-infused polymer surfaces into several functional 3D geometries enabled a clean separation and simultaneous concentration of a liquid containing rhodamine dye into discrete, predefined locations. When used with bacteria, which are known for their ability to adhere to nearly any surface type, functional geometries with liquid-infused polymer surfaces concentrated the cells at levels significantly higher than geometries with dry control surfaces. These results show the potential of synergistically combining paper-based materials with liquid-infused polymer surfaces for the manipulation and handling of complex samples, which may help the future engineering of POC devices.
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Doll K, Yang I, Fadeeva E, Kommerein N, Szafrański SP, Bei der Wieden G, Greuling A, Winkel A, Chichkov BN, Stumpp NS, Stiesch M. Liquid-Infused Structured Titanium Surfaces: Antiadhesive Mechanism to Repel Streptococcus oralis Biofilms. ACS APPLIED MATERIALS & INTERFACES 2019; 11:23026-23038. [PMID: 31173692 DOI: 10.1021/acsami.9b06817] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
To combat implant-associated infections, there is a need for novel materials which effectively inhibit bacterial biofilm formation. In the present study, the antiadhesive properties of titanium surface functionalization based on the "slippery liquid-infused porous surfaces" (SLIPS) principle were demonstrated and the underlying mechanism was analyzed. The immobilized liquid layer was stable over 13 days of continuous flow in an oral flow chamber system. With increasing flow rates, the surface exhibited a significant reduction in attached biofilm of both the oral initial colonizer Streptococcus oralis and an oral multispecies biofilm composed of S. oralis, Actinomyces naeslundii, Veillonella dispar, and Porphyromonas gingivalis. Using single cell force spectroscopy, reduced S. oralis adhesion forces on the lubricant layer could be measured. Gene expression patterns in biofilms on SLIPS, on control surfaces, and expression patterns of planktonic cultures were also compared. For this purpose, the genome of S. oralis strain ATCC 9811 was sequenced using PacBio Sequel technology. Even though biofilm cells showed clear changes in gene expression compared to planktonic cells, no differences could be detected between bacteria on SLIPS and on control surfaces. Therefore, it can be concluded that the ability of liquid-infused titanium to repel S. oralis biofilms is mainly due to weakened bacterial adhesion to the underlying liquid interface.
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Affiliation(s)
- Katharina Doll
- Department of Prosthetic Dentistry and Biomedical Materials Science , Hannover Medical School , Carl-Neuberg-Strasse 1 , 30625 Hannover , Germany
| | - Ines Yang
- Department of Prosthetic Dentistry and Biomedical Materials Science , Hannover Medical School , Carl-Neuberg-Strasse 1 , 30625 Hannover , Germany
| | - Elena Fadeeva
- Institute of Quantum Optics , Leibniz University of Hannover , Welfengarten 1 , 30167 Hannover , Germany
| | - Nadine Kommerein
- Department of Prosthetic Dentistry and Biomedical Materials Science , Hannover Medical School , Carl-Neuberg-Strasse 1 , 30625 Hannover , Germany
| | - Szymon P Szafrański
- Department of Prosthetic Dentistry and Biomedical Materials Science , Hannover Medical School , Carl-Neuberg-Strasse 1 , 30625 Hannover , Germany
| | - Gesa Bei der Wieden
- Department of Prosthetic Dentistry and Biomedical Materials Science , Hannover Medical School , Carl-Neuberg-Strasse 1 , 30625 Hannover , Germany
| | - Andreas Greuling
- Department of Prosthetic Dentistry and Biomedical Materials Science , Hannover Medical School , Carl-Neuberg-Strasse 1 , 30625 Hannover , Germany
| | - Andreas Winkel
- Department of Prosthetic Dentistry and Biomedical Materials Science , Hannover Medical School , Carl-Neuberg-Strasse 1 , 30625 Hannover , Germany
| | - Boris N Chichkov
- Institute of Quantum Optics , Leibniz University of Hannover , Welfengarten 1 , 30167 Hannover , Germany
| | - Nico S Stumpp
- Department of Prosthetic Dentistry and Biomedical Materials Science , Hannover Medical School , Carl-Neuberg-Strasse 1 , 30625 Hannover , Germany
| | - Meike Stiesch
- Department of Prosthetic Dentistry and Biomedical Materials Science , Hannover Medical School , Carl-Neuberg-Strasse 1 , 30625 Hannover , Germany
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Kao CW, Tseng YY, Liu KS, Liu YW, Chen JC, He HL, Kau YC, Liu SJ. Anesthetics and human epidermal growth factor incorporated into anti-adhesive nanofibers provide sustained pain relief and promote healing of surgical wounds. Int J Nanomedicine 2019; 14:4007-4016. [PMID: 31213812 PMCID: PMC6549740 DOI: 10.2147/ijn.s202402] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Accepted: 04/11/2019] [Indexed: 12/16/2022] Open
Abstract
Background: This study exploited sheath-core-structured lidocaine/human EGF (hEGF)-loaded anti-adhesive poly[(d,l)-lactide-co-glycolide] (PLGA) nanofibrous films for surgical wounds via a co-axial electrospinning technique. Materials and methods: After spinning, the properties of the co-axially spun membranes were characterized by scanning electron microscopy, laser-scanning confocal microscopy, Fourier Transform Infrared spectrometry, water contact angle measurements, and tensile tests. Furthermore, a HPLC analysis and an ELISA evaluated the in vitro and in vivo release curves of lidocaine and hEGF from the films. Results: PLGA anti-adhesion nanofibers eluted high levels of lidocaine and hEGF for over 32 and 27 days, respectively, in vitro. The in vivo evaluation of post-surgery recovery in a rat model demonstrated that no adhesion was noticed in tissues at 2 weeks after surgery illustrating the anti-adhesive performance of the sheath-core-structured nanofibers. Nanofibrous films effectively released lidocaine and hEGF for >2 weeks in vivo. In addition, rats implanted with the lidocaine/hEGF nanofibrous membranes exhibited greater activities than the control demonstrating the pain relief efficacy of the films. Conclusion: The empirical outcomes suggested that the anti-adhesive nanofibrous films with extended release of lidocaine and hEGF offer post-operative pain relief and wound healing.
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Affiliation(s)
- Ching-Wei Kao
- Department of Anesthesiology, Chiayi Chang Gung Memorial Hospital, Chiayi, Taiwan.,Department of Mechanical Engineering, Chang Gung University, Taoyuan, Taiwan
| | - Yuan-Yun Tseng
- Division of Neurosurgery, Department of Surgery, Shuang Ho Hospital, Taipei Medical University, Taipei, Taiwan.,Department of Surgery, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Kuo-Sheng Liu
- Department of Thoracic and Cardiovascular Surgery, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Yen-Wei Liu
- Department of Thoracic and Cardiovascular Surgery, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Jin-Chung Chen
- Graduate Institute of Biomedical Science, Chang Gung University, Taoyuan, Taiwan
| | - Hong-Lin He
- Department of Pathology, E-DA Hospital, I-Shou University, Kaohsiung, Taiwan
| | - Yi-Chuan Kau
- Department of Anesthesiology, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Shih-Jung Liu
- Department of Mechanical Engineering, Chang Gung University, Taoyuan, Taiwan.,Department of Orthopedic Surgery, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan
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41
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Riga EK, Gillies E, Lienkamp K. Self-Regenerating Antimicrobial Polymer Surfaces via Multilayer-Design - Sequential and Triggered Layer Shedding under Physiological Conditions. ADVANCED MATERIALS INTERFACES 2019; 6:1802049. [PMID: 34405081 PMCID: PMC7611505 DOI: 10.1002/admi.201802049] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Indexed: 05/05/2023]
Abstract
Regeneration of materials properties through surface regeneration could extend the lifetime of devices and is still an emerging field of research. (Self-)regenerating antimicrobial polymer surfaces could help to fight biofilm formation and related bacterial infections. In this paper, four different polymer multilayer designs for the regeneration of antimicrobial surfaces by layer shedding are presented. The multilayer architectures consist of 100-200 nm thick, discrete polymer layers. They are made from poly(guanidinium oxanorbornene) networks as the antimicrobial component, and different interlayers made from degradable poly(adipic anhydrides), depolymerizable poly(ethyl glyoxylate), or water-soluble poly(acrylamide). Layer shedding is designed to occur after hydrolysis, dissolution or depolymerization under simulated physiological conditions. The multilayer fabrication and disassembly is monitored by fluorescence microscopy, ellipsometry FT-IR spectroscopy and atomic force microscopy. By testing the antimicrobial activity of the restored surfaces, their functional integrity after layer shedding is confirmed.
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Affiliation(s)
- Esther Karolin Riga
- Department of Microsystems Engineering (IMTEK) and Freiburg Center for Interactive Materials and Bioinspired Technologies (FIT), Albert-Ludwigs-Universität, Freiburg, Georges-Köhler-Allee 105, 79110 Freiburg, Germany
| | - Elizabeth Gillies
- Department of Chemistry and Department of Chemical and Biochemical Engineering, The University of Western Ontario, 1151 Richmond Street, London, Ontario N6A 5B7, Canada
| | - Karen Lienkamp
- Department of Microsystems Engineering (IMTEK) and Freiburg Center for Interactive Materials and Bioinspired Technologies (FIT), Albert-Ludwigs-Universität, Freiburg, Georges-Köhler-Allee 105, 79110 Freiburg, Germany
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42
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Mackie G, Gao L, Yau S, Leslie DC, Waterhouse A. Clinical Potential of Immobilized Liquid Interfaces: Perspectives on Biological Interactions. Trends Biotechnol 2019; 37:268-280. [DOI: 10.1016/j.tibtech.2018.08.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Revised: 08/17/2018] [Accepted: 08/20/2018] [Indexed: 12/23/2022]
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43
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Cheng Y, Feng G, Moraru CI. Micro- and Nanotopography Sensitive Bacterial Attachment Mechanisms: A Review. Front Microbiol 2019; 10:191. [PMID: 30846973 PMCID: PMC6393346 DOI: 10.3389/fmicb.2019.00191] [Citation(s) in RCA: 149] [Impact Index Per Article: 29.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Accepted: 01/23/2019] [Indexed: 12/16/2022] Open
Abstract
Bacterial attachment to material surfaces can lead to the development of biofilms that cause severe economic and health problems. The outcome of bacterial attachment is determined by a combination of bacterial sensing of material surfaces by the cell and the physicochemical factors in the near-surface environment. This paper offers a systematic review of the effects of surface topography on a range of antifouling mechanisms, with a focus on how topographical scale, from micro- to nanoscale, may influence bacterial sensing of and attachment to material surfaces. A good understanding of these mechanisms can facilitate the development of antifouling surfaces based on surface topography, with applications in various sectors of human life and activity including healthcare, food, and water treatment.
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Affiliation(s)
- Yifan Cheng
- Department of Food Science, Cornell University, Ithaca, NY, United States
| | | | - Carmen I. Moraru
- Department of Food Science, Cornell University, Ithaca, NY, United States
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44
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Waterhouse A, Leslie DC, Lightbown K, Antonoff D, Lightbown S, Dimitrakakis N, Hicks-Berthet JB, Leslie CN, Super M, Ingber DE, Ackerman MB. Rapid Coating Process Generates Omniphobic Dentures in Minutes to Reduce C. albicans Biofouling. ACS Biomater Sci Eng 2019; 5:420-424. [PMID: 33405807 DOI: 10.1021/acsbiomaterials.8b01214] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Localized infections caused by biofilm formation on dentures pose a serious health risk for patients, especially the elderly, as they can lead to complications such as pneumonia. Daily enzymatic denture cleaners do not fully prevent biofilm formation on dentures. Here we developed a rapid coating process to apply a liquid repellent surface to dentures in ∼5 min and demonstrated a significant 225-fold reduction of Candida albicans adhesion over 6 days, compared to uncoated dentures. This rapid coating process could be applied to dentures and other dental devices chair-side and allow the research community to quickly and easily generate ominphobic surfaces.
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Affiliation(s)
- Anna Waterhouse
- Wyss Institute for Biologically Inspired Engineering at Harvard University, 3 Blackfan Circle, Boston, Massachusetts 02115, United States
| | - Daniel C Leslie
- Wyss Institute for Biologically Inspired Engineering at Harvard University, 3 Blackfan Circle, Boston, Massachusetts 02115, United States
| | - Kayla Lightbown
- Wyss Institute for Biologically Inspired Engineering at Harvard University, 3 Blackfan Circle, Boston, Massachusetts 02115, United States
| | - Daniel Antonoff
- Wyss Institute for Biologically Inspired Engineering at Harvard University, 3 Blackfan Circle, Boston, Massachusetts 02115, United States
| | - Shanda Lightbown
- Wyss Institute for Biologically Inspired Engineering at Harvard University, 3 Blackfan Circle, Boston, Massachusetts 02115, United States
| | - Nikolaos Dimitrakakis
- Wyss Institute for Biologically Inspired Engineering at Harvard University, 3 Blackfan Circle, Boston, Massachusetts 02115, United States
| | - Julia B Hicks-Berthet
- Wyss Institute for Biologically Inspired Engineering at Harvard University, 3 Blackfan Circle, Boston, Massachusetts 02115, United States
| | - Cheyene N Leslie
- Wyss Institute for Biologically Inspired Engineering at Harvard University, 3 Blackfan Circle, Boston, Massachusetts 02115, United States
| | - Michael Super
- Wyss Institute for Biologically Inspired Engineering at Harvard University, 3 Blackfan Circle, Boston, Massachusetts 02115, United States
| | - Donald E Ingber
- Wyss Institute for Biologically Inspired Engineering at Harvard University, 3 Blackfan Circle, Boston, Massachusetts 02115, United States.,Vascular Biology Program, Boston Children's Hospital and Harvard Medical School, Boston, Massachusetts 02115, United States.,John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, United States
| | - Marc B Ackerman
- Department of Dentistry, Boston Children's Hospital, Boston, Massachusetts 02115, United States.,Department of Developmental Biology, School of Dental Medicine, Harvard University, Boston, Massachusetts, United States
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45
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Chen Y, Luo SC. Synergistic Effects of Ions and Surface Potentials on Antifouling Poly(3,4-ethylenedioxythiophene): Comparison of Oligo(Ethylene Glycol) and Phosphorylcholine. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:1199-1210. [PMID: 30089366 DOI: 10.1021/acs.langmuir.8b02122] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
For electrified surfaces, ions and applied potentials play major roles in controlling the surface properties. Antifouling materials such as poly(ethylene glycol) and zwitterionic polymers that resist nonspecific protein binding and cell adhesion play a key role in various biomedical applications. In this study, we investigated and compared the antifouling properties of conducting polymers grafted with oligo(ethylene glycol) groups and phosphorylcholine (PC) groups in the presence of different anions and applied potentials. Considerable effort has been made to illustrate the different effects of manipulating the antifouling properties of these two surfaces. We prepared polymer films by applying electropolymerization to two functionalized (3,4-ethylenedioxythiophene) polymers containing triethylene glycol and PC groups, respectively. A quartz crystal microbalance with dissipation (QCM-D) was employed to characterize the negatively charged bovine serum albumin and positively charged lysozyme adsorption as a function of ionic concentration in the presence of various Hofmeister anions. The frequency changes corresponded to the protein or ion adsorption/desorption behavior on the surface. The anions adsorbed on polymer films to effectively enhance the hydration layer of the polymer surface and reduce nonspecific protein binding. We further integrated a potentiostat with the QCM-D to control the protein adsorption/desorption behaviors by applying potentials, and we conducted an electrochemical QCM-D study. Most importantly, with the synergistic effect of ions and surface potential, a nearly fresh polymer surface was regenerated. This study describes principles to maintain and regenerate the antifouling properties of electrified surfaces, which are critical for implanted bioelectronics applications.
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Affiliation(s)
- Yue Chen
- Department of Materials Science and Engineering , National Taiwan University , No. 1, Sec. 4, Roosevelt Road , Taipei 10617 , Taiwan
| | - Shyh-Chyang Luo
- Department of Materials Science and Engineering , National Taiwan University , No. 1, Sec. 4, Roosevelt Road , Taipei 10617 , Taiwan
- Advanced Research Center for Green Materials Science and Technology , National Taiwan University , Taipei 10617 , Taiwan
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46
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Regan DP, Howell C. Droplet manipulation with bioinspired liquid-infused surfaces: A review of recent progress and potential for integrated detection. Curr Opin Colloid Interface Sci 2019. [DOI: 10.1016/j.cocis.2019.01.012] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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47
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Preparation of drug-immobilized anti-adhesion agent using visible light-curable alginate derivative containing furfuryl group. Int J Biol Macromol 2019; 121:301-308. [DOI: 10.1016/j.ijbiomac.2018.09.195] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Revised: 09/03/2018] [Accepted: 09/28/2018] [Indexed: 01/02/2023]
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48
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49
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Howell C, Grinthal A, Sunny S, Aizenberg M, Aizenberg J. Designing Liquid-Infused Surfaces for Medical Applications: A Review. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1802724. [PMID: 30151909 DOI: 10.1002/adma.201802724] [Citation(s) in RCA: 135] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2018] [Revised: 06/06/2018] [Indexed: 05/21/2023]
Abstract
The development of new technologies is key to the continued improvement of medicine, relying on comprehensive materials design strategies that can integrate advanced therapeutic and diagnostic functions with a variety of surface properties such as selective adhesion, dynamic responsiveness, and optical/mechanical tunability. Liquid-infused surfaces have recently come to the forefront as a unique approach to surface coatings that can resist adhesion of a wide range of contaminants on medical devices. Furthermore, these surfaces are proving highly versatile in enabling the integration of established medical surface treatments alongside the antifouling capabilities, such as drug release or biomolecule organization. Here, the range of research being conducted on liquid-infused surfaces for medical applications is presented, from an understanding of the basics behind the interactions of physiological fluids, microbes, and mammalian cells with liquid layers to current applications of these materials in point-of-care diagnostics, medical tubing, instruments, implants, and tissue engineering. Throughout this exploration, the design parameters of liquid-infused surfaces and how they can be adapted and tuned to particular applications are discussed, while identifying how the range of controllable factors offered by liquid-infused surfaces can be used to enable completely new and dynamic approaches to materials and devices for human health.
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Affiliation(s)
- Caitlin Howell
- Department of Chemical and Biomedical Engineering and School of Biomedical Science and Engineering, University of Maine, 5737 Jenness Hall, Orono, ME, 04469, USA
| | - Alison Grinthal
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, 29 Oxford Street, Cambridge, MA, 021383, USA
| | - Steffi Sunny
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, 29 Oxford Street, Cambridge, MA, 021383, USA
| | - Michael Aizenberg
- Wyss Institute for Biologically Inspired Engineering, 3 Blackfan Cir, Boston, MA, 02115, USA
| | - Joanna Aizenberg
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, 29 Oxford Street, Cambridge, MA, 021383, USA
- Wyss Institute for Biologically Inspired Engineering, 3 Blackfan Cir, Boston, MA, 02115, USA
- Kavli Institute for Bionano Science and Technology, Harvard University, 29 Oxford Street, Cambridge, MA, 02138, USA
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50
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Badv M, Imani SM, Weitz JI, Didar TF. Lubricant-Infused Surfaces with Built-In Functional Biomolecules Exhibit Simultaneous Repellency and Tunable Cell Adhesion. ACS NANO 2018; 12:10890-10902. [PMID: 30352507 DOI: 10.1021/acsnano.8b03938] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Lubricant-infused omniphobic surfaces have exhibited outstanding effectiveness in inhibiting nonspecific adhesion and attenuating superimposed clot formation compared with other coated surfaces. However, such surfaces blindly thwart adhesion, which is troublesome for applications that rely on targeted adhesion. Here we introduce a new class of lubricant-infused surfaces that offer tunable bioactivity together with omniphobic properties by integrating biofunctional domains into the lubricant-infused layer. These novel surfaces promote targeted binding of desired species while simultaneously preventing nonspecific adhesion. To develop these surfaces, mixed self-assembled monolayers (SAMs) of aminosilanes and fluorosilanes were generated. Aminosilanes were utilized as coupling molecules for immobilizing capture ligands, and nonspecific adhesion of cells and proteins was prevented by infiltrating the fluorosilane molecules with a thin layer of a biocompatible fluorocarbon-based lubricant, thus generating biofunctional lubricant-infused surfaces. This method yields surfaces that (a) exhibit highly tunable binding of anti-CD34 and anti-CD144 antibodies and adhesion of endothelial cells, while repelling nonspecific adhesion of undesirable proteins and cells not only in buffer but also in human plasma or human whole blood, and (b) attenuate blood clot formation. Therefore, this straightforward and simple method creates biofunctional, nonsticky surfaces that can be used to optimize the performance of devices such as biomedical implants, extracorporeal circuits, and biosensors.
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Affiliation(s)
- Maryam Badv
- School of Biomedical Engineering , McMaster University , Hamilton , Ontario L8S 4L7 , Canada
| | - Sara M Imani
- School of Biomedical Engineering , McMaster University , Hamilton , Ontario L8S 4L7 , Canada
| | - Jeffrey I Weitz
- School of Biomedical Engineering , McMaster University , Hamilton , Ontario L8S 4L7 , Canada
- Thrombosis & Atherosclerosis Research Institute (TaARI) , Hamilton , Ontario L8S 4L7 , Canada
| | - Tohid F Didar
- School of Biomedical Engineering , McMaster University , Hamilton , Ontario L8S 4L7 , Canada
- Department of Mechanical Engineering , McMaster University , Hamilton , Ontario L8S 4L7 , Canada
- Institute for Infectious Disease Research (IIDR) , McMaster University , Hamilton , Ontario L8S 4L7 , Canada
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