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Zhang J, Williams G, Jitniyom T, Singh NS, Saal A, Riordan L, Berrow M, Churm J, Banzhaf M, de Cogan F, Gao N. Wettability and Bactericidal Properties of Bioinspired ZnO Nanopillar Surfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:7353-7363. [PMID: 38536768 PMCID: PMC11008234 DOI: 10.1021/acs.langmuir.3c03537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Revised: 03/14/2024] [Accepted: 03/18/2024] [Indexed: 04/10/2024]
Abstract
Nanomaterials of zinc oxide (ZnO) exhibit antibacterial activities under ambient illumination that result in cell membrane permeability and disorganization, representing an important opportunity for health-related applications. However, the development of antibiofouling surfaces incorporating ZnO nanomaterials has remained limited. In this work, we fabricate superhydrophobic surfaces based on ZnO nanopillars. Water droplets on these superhydrophobic surfaces exhibit small contact angle hysteresis (within 2-3°) and a minimal tilting angle of 1°. Further, falling droplets bounce off when impacting the superhydrophobic ZnO surfaces with a range of Weber numbers (8-46), demonstrating that the surface facilitates a robust Cassie-Baxter wetting state. In addition, the antibiofouling efficacy of the surfaces has been established against model pathogenic Gram-positive bacteria Staphylococcus aureus (S. aureus) and Gram-negative bacteria Escherichia coli (E. coli). No viable colonies of E. coli were recoverable on the superhydrophobic surfaces of ZnO nanopillars incubated with cultured bacterial solutions for 18 h. Further, our tests demonstrate a substantial reduction in the quantity of S. aureus that attached to the superhydrophobic ZnO nanopillars. Thus, the superhydrophobic ZnO surfaces offer a viable design of antibiofouling materials that do not require additional UV illumination or antimicrobial agents.
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Affiliation(s)
- Jitao Zhang
- School
of Engineering, University of Birmingham, Edgbaston ,Birmingham B15 2TT, United Kingdom
| | - Georgia Williams
- School
of Biosciences, University of Birmingham, Edgbaston ,Birmingham B15 2TT, United Kingdom
| | - Thanaphun Jitniyom
- School
of Engineering, University of Birmingham, Edgbaston ,Birmingham B15 2TT, United Kingdom
| | - Navdeep Sangeet Singh
- School
of Engineering, University of Birmingham, Edgbaston ,Birmingham B15 2TT, United Kingdom
| | - Alexander Saal
- School
of Engineering, University of Birmingham, Edgbaston ,Birmingham B15 2TT, United Kingdom
| | - Lily Riordan
- School
of Pharmacy, University of Nottingham, University
Park, Nottingham NG7 2RD, United Kingdom
| | - Madeline Berrow
- School
of Pharmacy, University of Nottingham, University
Park, Nottingham NG7 2RD, United Kingdom
| | - James Churm
- School
of Engineering, University of Birmingham, Edgbaston ,Birmingham B15 2TT, United Kingdom
| | - Manuel Banzhaf
- School
of Biosciences, University of Birmingham, Edgbaston ,Birmingham B15 2TT, United Kingdom
| | - Felicity de Cogan
- School
of Pharmacy, University of Nottingham, University
Park, Nottingham NG7 2RD, United Kingdom
| | - Nan Gao
- School
of Engineering, University of Birmingham, Edgbaston ,Birmingham B15 2TT, United Kingdom
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Ghasemlou M, Oladzadabbasabadi N, Ivanova EP, Adhikari B, Barrow CJ. Engineered Sustainable Omniphobic Coatings to Control Liquid Spreading on Food-Contact Materials. ACS APPLIED MATERIALS & INTERFACES 2024; 16:15657-15686. [PMID: 38518221 DOI: 10.1021/acsami.4c01329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/24/2024]
Abstract
The adhesion of sticky liquid foods to a contacting surface can cause many technical challenges. The food manufacturing sector is confronted with many critical issues that can be overcome with long-lasting and highly nonwettable coatings. Nanoengineered biomimetic surfaces with distinct wettability and tunable interfaces have elicited increasing interest for their potential use in addressing a broad variety of scientific and technological applications, such as antifogging, anti-icing, antifouling, antiadhesion, and anticorrosion. Although a large number of nature-inspired surfaces have emerged, food-safe nonwetted surfaces are still in their infancy, and numerous structural design aspects remain unexplored. This Review summarizes the latest scientific research regarding the key principles, fabrication methods, and applications of three important categories of nonwettable surfaces: superhydrophobic, liquid-infused slippery, and re-entrant structured surfaces. The Review is particularly focused on new insights into the antiwetting mechanisms of these nanopatterned structures and discovering efficient platform methodologies to guide their rational design when in contact with food materials. A detailed description of the current opportunities, challenges, and future scale-up possibilities of these nanoengineered surfaces in the food industry is also provided.
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Affiliation(s)
- Mehran Ghasemlou
- School of Science, STEM College, RMIT University, Melbourne, Victoria 3001, Australia
- Centre for Sustainable Bioproducts, Deakin University, Waurn Ponds, Victoria 3216, Australia
| | | | - Elena P Ivanova
- School of Science, STEM College, RMIT University, Melbourne, Victoria 3001, Australia
| | - Benu Adhikari
- School of Science, STEM College, RMIT University, Melbourne, Victoria 3001, Australia
- Centre for Advanced Materials and Industrial Chemistry (CAMIC), School of Science, RMIT University, Melbourne, Victoria 3001, Australia
| | - Colin J Barrow
- Centre for Sustainable Bioproducts, Deakin University, Waurn Ponds, Victoria 3216, Australia
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Lin H, Kehinde O, Lin C, Fei M, Li R, Zhang X, Yang W, Li J. Mechanically strong micro-nano fibrillated cellulose paper with improved barrier and water-resistant properties for replacing plastic. Int J Biol Macromol 2024; 263:130102. [PMID: 38342270 DOI: 10.1016/j.ijbiomac.2024.130102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 02/04/2024] [Accepted: 02/08/2024] [Indexed: 02/13/2024]
Abstract
Replacing nonbiodegradable plastics with environmentally friendly cellulose materials has emerged as a key trend in environmental protection. This study highlights the development of a strong and hydrophobic micro-nano fibrillated cellulose paper (MNP) through the incorporation of micro-nano fibrillated cellulose fiber (MNF) and chitin nanocrystal (Ch), followed by the impregnation of polymethylsiloxane (PMHS). A low-acid, heat-assisted colloidal grinding strategy was employed to prepare MNF with a high aspect ratio effectively. Ch was incorporated as a reinforcing matrix into the cellulose fiber scaffold through straightforward mechanical mixing and mechanical hot-pressing treatments. Compared to pure MNP, the 5Ch-MNP exhibited a 25 % improvement in tensile strength, reaching 170 MPa, and showed enhanced barrier properties against oxygen and water vapor. The impregnation of PMHS rapidly confers environmentally resistant hydrophobic properties to 1 % PMHS-5Ch-MNP, leading to a water contact angle exceeding 112°, and a 290 % increase in tensile strength under wet conditions. Additionally, the paper demonstrated excellent antibacterial adhesion properties, with the adhesion rates for E. coli and S. aureus exceeding 98 %. This study successfully produced functional cellulose paper with remarkable mechanical properties and barrier properties, as well as hydrophobicity, using a simple, efficient, and environmentally friendly method, making it a promising substitute for petroleum-based plastics.
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Affiliation(s)
- Huiping Lin
- College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou 350100, China
| | - Olonisakin Kehinde
- College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou 350100, China
| | - Chengwei Lin
- College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou 350100, China
| | - Mingen Fei
- College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou 350100, China
| | - Ran Li
- College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou 350100, China
| | - Xinxiang Zhang
- College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou 350100, China
| | - Wenbin Yang
- College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou 350100, China.
| | - Jian Li
- College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou 350100, China; Northeast Forestry University, Haerbin 150040, China.
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Rasitha TP, Krishna NG, Anandkumar B, Vanithakumari SC, Philip J. A comprehensive review on anticorrosive/antifouling superhydrophobic coatings: Fabrication, assessment, applications, challenges and future perspectives. Adv Colloid Interface Sci 2024; 324:103090. [PMID: 38290251 DOI: 10.1016/j.cis.2024.103090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Revised: 01/16/2024] [Accepted: 01/16/2024] [Indexed: 02/01/2024]
Abstract
Superhydrophobicity (SHP) is an incredible phenomenon of extreme water repellency of surfaces ubiquitous in nature (E.g. lotus leaves, butterfly wings, taro leaves, mosquito eyes, water-strider legs, etc). Historically, surface exhibiting water contact angle (WCA) > 150° and contact angle hysteresis <10° is considered as SHP. The SHP surfaces garnered considerable attention in recent years due to their applications in anti-corrosion, anti-fouling, self-cleaning, oil-water separation, viscous drag reduction, anti-icing, etc. As corrosion and marine biofouling are global problems, there has been focused efforts in combating these issues using innovative environmentally friendly coatings designs taking cues from natural SHP surfaces. Over the last two decades, though significant progress has been made on the fabrication of various SHP surfaces, the practical adaptation of these surfaces for various applications is hampered, mainly because of the high cost, non-scalability, lack of simplicity, non-adaptability for a wide range of substrates, poor mechanical robustness and chemical inertness. Despite the extensive research, the exact mechanism of corrosion/anti-fouling of such coatings also remains elusive. The current focus of research in recent years has been on the development of facile, eco-friendly, cost-effective, mechanically robust chemically inert, and scalable methods to prepare durable SHP coating on a variety of surfaces. Although there are some general reviews on SHP surfaces, there is no comprehensive review focusing on SHP on metallic and alloy surfaces with corrosion-resistant and antifouling properties. This review is aimed at filling this gap. This review provides a pedagogical description with the necessary background, key concepts, genesis, classical models of superhydrophobicity, rational design of SHP, coatings characterization, testing approaches, mechanisms, and novel fabrication approaches currently being explored for anticorrosion and antifouling, both from a fundamental and practical perspective. The review also provides a summary of important experimental studies with key findings, and detailed descriptions of the evaluation of surface morphologies, chemical properties, mechanical, chemical, corrosion, and antifouling properties. The recent developments in the fabrication of SHP -Cr-Mo steel, Ti, and Al are presented, along with the latest understanding of the mechanism of anticorrosion and antifouling properties of the coating also discussed. In addition, different promising applications of SHP surfaces in diverse disciplines are discussed. The last part of the review highlights the challenges and future directions. The review is an ideal material for researchers practicing in the field of coatings and also serves as an excellent reference for freshers who intend to begin research on this topic.
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Affiliation(s)
- T P Rasitha
- Corrosion Science and Technology Division, Materials Characterization Group, Indira Gandhi Centre for Atomic Research, Kalpakkam 603102, India
| | - Nanda Gopala Krishna
- Corrosion Science and Technology Division, Materials Characterization Group, Indira Gandhi Centre for Atomic Research, Kalpakkam 603102, India
| | - B Anandkumar
- Corrosion Science and Technology Division, Materials Characterization Group, Indira Gandhi Centre for Atomic Research, Kalpakkam 603102, India; Homi Bhabha National Institute, Kalpakkam 603102, India
| | - S C Vanithakumari
- Corrosion Science and Technology Division, Materials Characterization Group, Indira Gandhi Centre for Atomic Research, Kalpakkam 603102, India; Homi Bhabha National Institute, Kalpakkam 603102, India
| | - John Philip
- Corrosion Science and Technology Division, Materials Characterization Group, Indira Gandhi Centre for Atomic Research, Kalpakkam 603102, India; Homi Bhabha National Institute, Kalpakkam 603102, India.
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Kim HK, Baek HW, Park HH, Cho YS. Reusable mechano-bactericidal surface with echinoid-shaped hierarchical micro/nano-structure. Colloids Surf B Biointerfaces 2024; 234:113729. [PMID: 38160475 DOI: 10.1016/j.colsurfb.2023.113729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 12/09/2023] [Accepted: 12/23/2023] [Indexed: 01/03/2024]
Abstract
Biofilms formed owing to the attachment of bacteria to surfaces have caused various problems in industries such as marine transportation/logistics and medicine. In response, many studies have been conducted on bactericidal surfaces, and nanostructured surfaces mimicking cicada and dragonfly wings are emerging as candidates for mechano-bactericidal surfaces. In specific circumstances involving mechano-bactericidal activity, certain nanostructured surfaces could exhibit their bactericidal effects by directly deforming the membranes of bacteria that adhere to these nanostructures. Additionally, in most cases, debris of bacterial cells may accumulate on these nanostructured surfaces. Such accumulation poses a significant challenge: it diminishes the mechano-bactericidal effectiveness of the surface, as it hinders the direct interaction between the nanostructures and any new bacteria that attach subsequently. In specific circumstances involving mechano-bactericidal activity, certain nanostructured surfaces could exhibit their bactericidal effects by directly deforming the membranes of bacteria that adhere to these nanostructures. Additionally, in most cases, debris of bacterial cells may accumulate on these nanostructured surfaces. Such accumulation poses a significant challenge: it diminishes the mechano-bactericidal effectiveness of the surface, as it hinders the direct interaction between the nanostructures and any new bacteria that attach subsequently.In other words, there is a need for strategies to remove the accumulated bacterial debris in order to sustain the mechano-bactericidal effect of the nanostructured surface. In this study, hierarchical micro/nano-structured surface (echinoid-shaped nanotextures were formed on Al micro-particle's surfaces) was fabricated using a simple pressure-less sintering method, and effective bactericidal efficiency was shown against E. coli (97 ± 3.81%) and S. aureus (80 ± 9.34%). In addition, thermal cleaning at 500 °C effectively eliminated accumulated dead bacterial debris while maintaining the intact Al2O3 nanostructure, resulting in significant mechano-bactericidal activity (E. coli: 89 ± 6.86%, S. aureus: 75 ± 8.31%). As a result, thermal cleaning maintains the intact nanostructure and allows the continuance of the mechano-bactericidal effect. This effect was consistently maintained even after five repetitive use (E. coli: 80 ± 16.26%, S. aureus: 76 ± 12.67%).
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Affiliation(s)
- Hee-Kyeong Kim
- Department of Mechanical Engineering, College of Engineering, Wonkwang University, 460 Iksandae-ro, Iksan, Jeonbuk 54538, Republic of Korea
| | - Hyeon Woo Baek
- Department of Mechanical Engineering, College of Engineering, Wonkwang University, 460 Iksandae-ro, Iksan, Jeonbuk 54538, Republic of Korea
| | - Hyun-Ha Park
- Department of Mechanical Engineering, College of Engineering, Wonkwang University, 460 Iksandae-ro, Iksan, Jeonbuk 54538, Republic of Korea; MECHABIO Group, Wonkwang University, 460 Ikandae-ro, Iksan, Jeonbuk 54538, Republic of Korea.
| | - Young-Sam Cho
- Department of Mechanical Design Engineering, College of Engineering, Wonkwang University, 460 Iksandae-ro, Iksan, Jeonbuk 54538, Republic of Korea; MECHABIO Group, Wonkwang University, 460 Ikandae-ro, Iksan, Jeonbuk 54538, Republic of Korea.
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Uttam I, Sudarsan S, Ray R, Chinnappan R, Yaqinuddin A, Al-Kattan K, Mani NK. A Hypothetical Approach to Concentrate Microorganisms from Human Urine Samples Using Paper-Based Adsorbents for Point-of-Care Molecular Assays. Life (Basel) 2023; 14:38. [PMID: 38255653 PMCID: PMC10820215 DOI: 10.3390/life14010038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Revised: 12/20/2023] [Accepted: 12/21/2023] [Indexed: 01/24/2024] Open
Abstract
This hypothesis demonstrates that the efficiency of loop-mediated isothermal amplification (LAMP) for nucleic acid detection can be positively influenced by the preconcentration of microbial cells onto hydrophobic paper surfaces. The mechanism of this model is based on the high affinity of microbes towards hydrophobic surfaces. Extensive studies have demonstrated that hydrophobic surfaces exhibit enhanced bacterial and fungal adhesion. By exploiting this inherent affinity of hydrophobic paper substrates, the preconcentration approach enables the adherence of a greater number of target cells, resulting in a higher concentration of target templates for amplification directly from urine samples. In contrast to conventional methods, which often involve complex procedures, this approach offers a simpler, cost-effective, and user-friendly alternative. Moreover, the integration of cell adhesion, LAMP amplification, and signal readout within paper origami-based devices can provide a portable, robust, and highly efficient platform for rapid nucleic acid detection. This innovative hypothesis holds significant potential for point-of-care (POC) diagnostics and field surveillance applications. Further research and development in this field will advance the implementation of this technology, contributing to improved healthcare systems and public health outcomes.
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Affiliation(s)
- Isha Uttam
- Microfluidics, Sensors and Diagnostics (µSenD) Laboratory, Centre for Microfluidics, Biomarkers, Photoceutics and Sensors (μBioPS), Department of Biotechnology, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India; (I.U.); (S.S.)
| | - Sujesh Sudarsan
- Microfluidics, Sensors and Diagnostics (µSenD) Laboratory, Centre for Microfluidics, Biomarkers, Photoceutics and Sensors (μBioPS), Department of Biotechnology, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India; (I.U.); (S.S.)
| | - Rohitraj Ray
- Department of BioSystems Science and Engineering (BSSE), Indian Institute of Science, CV Raman Rd, Bangalore 560012, Karnataka, India;
| | - Raja Chinnappan
- College of Medicine, Alfaisal University, Riyadh 11533, Saudi Arabia; (A.Y.); (K.A.-K.)
- Tissue/Organ Bioengineering & BioMEMS Lab, Organ Transplant Centre of Excellence, Transplant Research & Innovation Department, King Faisal Specialist Hospital and Research Centre, Riyadh 11211, Saudi Arabia
| | - Ahmed Yaqinuddin
- College of Medicine, Alfaisal University, Riyadh 11533, Saudi Arabia; (A.Y.); (K.A.-K.)
| | - Khaled Al-Kattan
- College of Medicine, Alfaisal University, Riyadh 11533, Saudi Arabia; (A.Y.); (K.A.-K.)
| | - Naresh Kumar Mani
- Microfluidics, Sensors and Diagnostics (µSenD) Laboratory, Centre for Microfluidics, Biomarkers, Photoceutics and Sensors (μBioPS), Department of Biotechnology, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India; (I.U.); (S.S.)
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Jia D, Lin Y, Zou Y, Zhang Y, Yu Q. Recent Advances in Dual-Function Superhydrophobic Antibacterial Surfaces. Macromol Biosci 2023; 23:e2300191. [PMID: 37265089 DOI: 10.1002/mabi.202300191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 05/31/2023] [Indexed: 06/03/2023]
Abstract
Bacterial adhesion and subsequent biofilm formation on the surfaces of synthetic materials imposes a significant burden in various fields, which can lead to infections in patients or reduce the service life of industrial devices. Therefore, there is increasing interest in imbuing surfaces with antibacterial properties. Bioinspired superhydrophobic surfaces with high water contact angles (>150°) exhibit excellent surface repellency against contaminations, thereby preventing initial bacterial adhesion and inhibiting biofilm formation. However, conventional superhydrophobic surfaces typically lack long-term durability and are incapable of achieving persistent efficacy against bacterial adhesion. To overcome these limitations, in recent decades, dual-function superhydrophobic antibacterial surfaces with both bacteria-repelling and bacteria-killing properties have been developed by introducing bactericidal components. These surfaces have demonstrated improved long-term antibacterial performance in addressing the issues associated with surface-attached bacteria. This review summarizes the recent advancements of these dual-function superhydrophobic antibacterial surfaces. First, a brief overview of the fabrication strategies and bacteria-repelling mechanism of superhydrophobic surfaces is provided and then the dual-function superhydrophobic antibacterial surfaces are classified into three types based on the bacteria-killing mechanism: i) mechanotherapy, ii) chemotherapy, and iii) phototherapy. Finally, the limitations and challenges of current research are discussed and future perspectives in this promising area are proposed.
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Affiliation(s)
- Dongxu Jia
- Department of Cardiovascular Surgery of the First Affiliated Hospital and Institute for Cardiovascular Science, Suzhou Medical College of Soochow University, Soochow University, Suzhou, 215000, P. R. China
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P. R. China
| | - Yuancheng Lin
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P. R. China
| | - Yi Zou
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P. R. China
| | - Yanxia Zhang
- Department of Cardiovascular Surgery of the First Affiliated Hospital and Institute for Cardiovascular Science, Suzhou Medical College of Soochow University, Soochow University, Suzhou, 215000, P. R. China
| | - Qian Yu
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P. R. China
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Zhou L, Xing Y, Ou Y, Ding J, Han Y, Lin D, Chen J. Prolonged release of an antimicrobial peptide GL13K-loaded thermosensitive hydrogel on a titanium surface improves its antibacterial and anti-inflammatory properties. RSC Adv 2023; 13:23308-23319. [PMID: 37538512 PMCID: PMC10395452 DOI: 10.1039/d3ra03414c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Accepted: 07/17/2023] [Indexed: 08/05/2023] Open
Abstract
The application of titanium in the orthopedic and dental fields is associated with bacterial infection and chronic inflammation, especially in the early stages after its implantation. In the present study, we investigated the antibacterial and anti-inflammatory activities of a titanium surface that was immobilized in a thermosensitive PLGA-PEG-PLGA hydrogel containing the antimicrobial peptide GL13K. The FTIR results confirmed the successful loading of GL13K. The degradation of the hydrogel and release of GL13K persisted for two weeks. The modified titanium surface exhibited a significant inhibitory effect on Porphyromonas gingivalis in contact with its surface, as well as an inhibitory effect on P.g in the surrounding environment by releasing GL13K antimicrobial peptides. The modified titanium surfaces were biocompatible with RAW264.7. Furthermore, the expression of pro-inflammatory cytokines IL-1β, TNF-α and iNOS was down-regulated, whereas anti-inflammatory cytokines Arg-1, IL-10 and VEGF-A were up-regulated on the modified titanium surfaces on days 3 and 5. This effect was attributed to the polarization of macrophages from the M1 to M2 phenotype, which was confirmed by the detection of macrophage M1/M2 biomarkers via immunofluorescence staining and flow cytometry. Thus, the thermosensitive PLGA-PEG-PLGA hydrogel release system carrying the antimicrobial peptide GL13K on a titanium surface exhibited antibacterial and anti-inflammatory properties and promoted macrophage polarization from the M1 to M2 phenotype, which may help create a favourable niche for bone formation under infective condition.
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Affiliation(s)
- Lin Zhou
- Affiliated Stomatological Hospital of Fujian Medical University, Fujian Medical University Fujian China
- Fujian Key Laboratory of Oral Diseases, School and Hospital of Stomatology, Fujian Medical University Fuzhou China
| | - Yifeng Xing
- Fujian Key Laboratory of Oral Diseases, School and Hospital of Stomatology, Fujian Medical University Fuzhou China
- Fujian Biological Materials Engineering and Technology Center of Stomatology, Fujian Medical University Fuzhou China
| | - Yanjin Ou
- Affiliated Stomatological Hospital of Fujian Medical University, Fujian Medical University Fujian China
- Fujian Biological Materials Engineering and Technology Center of Stomatology, Fujian Medical University Fuzhou China
| | - Jiamin Ding
- Department of Oral Mucosa, Affiliated Stomatological Hospital of Fujian Medical University Fuzhou China
| | - Yu Han
- Division of Craniofacial Development and Tissue Biology, Graduate School of Dentistry, Tohoku University Sendai City Japan
| | - Dong Lin
- Affiliated Stomatological Hospital of Fujian Medical University, Fujian Medical University Fujian China
| | - Jiang Chen
- Affiliated Stomatological Hospital of Fujian Medical University, Fujian Medical University Fujian China
- Fujian Key Laboratory of Oral Diseases, School and Hospital of Stomatology, Fujian Medical University Fuzhou China
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9
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Zhuang A, Wu K, Lu Y, Yu J. Stable Superhydrophobic and Antimicrobial ZnO/Polytetrafluoroethylene Films via Radio Frequency (RF) Magnetron Sputtering. MICROMACHINES 2023; 14:1292. [PMID: 37512603 PMCID: PMC10383157 DOI: 10.3390/mi14071292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 06/11/2023] [Accepted: 06/21/2023] [Indexed: 07/30/2023]
Abstract
In this study, superhydrophobic ZnO/Polytetrafluoroethylene (ZnO/PTFE) films with water droplet contact angles (CA) observed as high as 165° and water droplet sliding angles of (SA) <1° have been prepared on glass substrates by RF magnetron sputtering. The PTFE was wrapped on a nano-rod made of a ZnO film with superhydrophobic properties while providing excellent UV resistance compared to hexadecyltrimethoxysilane (HDTMS) hydrophobic agents. The upper surface of the rough ZnO film was coated with PTFE, and most of the underlying coating was bare ZnO, which could well make contact with bacteria. For the Gram-negative strain, E. coli, the cell viability count of the ZnO/PTFE sample (3.5 log reduction, 99.96%) was conspicuously lower than that of the ZnO/HDTMS sample (1.2 log reduction, 93.87%) under 1 h illumination of UV light, which showed that the ZnO/PTFE sample has a better photocatalytic property than the ZnO/ HDTMS films. The ZnO/PTFE films also showed good mechanical robustness, which is an important consideration in their widespread real-world adoption.
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Affiliation(s)
- Aoyun Zhuang
- Key Laboratory of Air-Driven Equipment Technology of Zhejiang Province, College of Mechanical Engineering, Quzhou University, Quzhou 324000, China
| | - Ke Wu
- Department of Chemistry, University College London, 20 Gordon Street, London WC1E 0AJ, UK
| | - Yao Lu
- Department of Chemistry, School of Physical and Chemical Sciences, Queen Mary University of London, London E1 4NS, UK
| | - Jianping Yu
- Key Laboratory of Air-Driven Equipment Technology of Zhejiang Province, College of Mechanical Engineering, Quzhou University, Quzhou 324000, China
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Yuan L, Straub H, Shishaeva L, Ren Q. Microfluidics for Biofilm Studies. ANNUAL REVIEW OF ANALYTICAL CHEMISTRY (PALO ALTO, CALIF.) 2023; 16:139-159. [PMID: 37314876 DOI: 10.1146/annurev-anchem-091522-103827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Biofilms are multicellular communities held together by a self-produced extracellular matrix and exhibit a set of properties that distinguish them from free-living bacteria. Biofilms are exposed to a variety of mechanical and chemical cues resulting from fluid motion and mass transport. Microfluidics provides the precise control of hydrodynamic and physicochemical microenvironments to study biofilms in general. In this review, we summarize the recent progress made in microfluidics-based biofilm research, including understanding the mechanism of bacterial adhesion and biofilm development, assessment of antifouling and antimicrobial properties, development of advanced in vitro infection models, and advancement in methods to characterize biofilms. Finally, we provide a perspective on the future direction of microfluidics-assisted biofilm research.
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Affiliation(s)
- Lu Yuan
- Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health), Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, China;
| | - Hervé Straub
- Laboratory for Biointerfaces, Empa, Swiss Federal Laboratories for Materials Science and Technology, St. Gallen, Switzerland;
| | - Liubov Shishaeva
- Laboratory for Biointerfaces, Empa, Swiss Federal Laboratories for Materials Science and Technology, St. Gallen, Switzerland;
| | - Qun Ren
- Laboratory for Biointerfaces, Empa, Swiss Federal Laboratories for Materials Science and Technology, St. Gallen, Switzerland;
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Iskandar K, Pecastaings S, LeGac C, Salvatico S, Feuillolay C, Guittard M, Marchin L, Verelst M, Roques C. Demonstrating the In Vitro and In Situ Antimicrobial Activity of Oxide Mineral Microspheres: An Innovative Technology to Be Incorporated into Porous and Nonporous Materials. Pharmaceutics 2023; 15:pharmaceutics15041261. [PMID: 37111747 PMCID: PMC10144421 DOI: 10.3390/pharmaceutics15041261] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 03/26/2023] [Accepted: 04/07/2023] [Indexed: 04/29/2023] Open
Abstract
The antimicrobial activity of surfaces treated with zinc and/or magnesium mineral oxide microspheres is a patented technology that has been demonstrated in vitro against bacteria and viruses. This study aims to evaluate the efficiency and sustainability of the technology in vitro, under simulation-of-use conditions, and in situ. The tests were undertaken in vitro according to the ISO 22196:2011, ISO 20473:2013, and NF S90-700:2019 standards with adapted parameters. Simulation-of-use tests evaluated the robustness of the activity under worst-case scenarios. The in situ tests were conducted on high-touch surfaces. The in vitro results show efficient antimicrobial activity against referenced strains with a log reduction of >2. The sustainability of this effect was time-dependent and detected at lower temperatures (20 ± 2.5 °C) and humidity (46%) conditions for variable inoculum concentrations and contact times. The simulation of use proved the microsphere's efficiency under harsh mechanical and chemical tests. The in situ studies showed a higher than 90% reduction in CFU/25 cm2 per treated surface versus the untreated surfaces, reaching a targeted value of <50 CFU/cm2. Mineral oxide microspheres can be incorporated into unlimited surface types, including medical devices, to efficiently and sustainably prevent microbial contamination.
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Affiliation(s)
- Katia Iskandar
- Department of Pharmacy, School of Pharmacy, Lebanese International University, Bekaa P.O. Box 146404, Lebanon
- National Institute of Public Health, Clinical Epidemiology, and Toxicology-Lebanon (INSPECT-LB), Beirut 6573, Lebanon
| | - Sophie Pecastaings
- Laboratoire de Génie Chimique, Faculté de Pharmacie, Université de Toulouse, CNRS, INPT, UPS, 31062 Toulouse, France
| | - Céline LeGac
- FONDEREPHAR, Faculté de Pharmacie, 31062 Toulouse, France
| | | | | | - Mylène Guittard
- Pylote SAS, 22 Avenue de la Mouyssaguèse, 31280 Drémil-Lafage, France
| | - Loïc Marchin
- Pylote SAS, 22 Avenue de la Mouyssaguèse, 31280 Drémil-Lafage, France
| | - Marc Verelst
- CEMES, UPR CNRS 8011, 29 Rue Jeanne Marvig, CEDEX, 31055 Toulouse, France
| | - Christine Roques
- Laboratoire de Génie Chimique, Faculté de Pharmacie, Université de Toulouse, CNRS, INPT, UPS, 31062 Toulouse, France
- FONDEREPHAR, Faculté de Pharmacie, 31062 Toulouse, France
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12
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Bae K, Kang M, Shin Y, Choi E, Kim YM, Lee J. Multifunctional Edible Oil-Impregnated Nanoporous Oxide Layer on AISI 304 Stainless Steel. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:807. [PMID: 36903685 PMCID: PMC10005306 DOI: 10.3390/nano13050807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 02/18/2023] [Accepted: 02/19/2023] [Indexed: 06/18/2023]
Abstract
Slippery liquid-infused porous surface (SLIPS) realized on commercial materials provides various functionalities, such as corrosion resistance, condensation heat transfer, anti-fouling, de/anti-icing, and self-cleaning. In particular, perfluorinated lubricants infused in fluorocarbon-coated porous structures have showed exceptional performances with durability; however, they caused several issues in safety, due to their difficulty in degradation and bio-accumulation. Here, we introduce a new approach to create the multifunctional lubricant-impregnated surface with edible oils and fatty acid, which are also safe to human body and degradable in nature. The edible oil-impregnated anodized nanoporous stainless steel surface shows a significantly low contact angle hysteresis and sliding angle, which is similar with general surface of fluorocarbon lubricant-infused systems. The edible oil impregnated in the hydrophobic nanoporous oxide surface also inhibits the direct contact of external aqueous solution to a solid surface structure. Due to such de-wetting property caused by a lubricating effect of edible oils, the edible oil-impregnated stainless steel surface shows enhanced corrosion resistance, anti-biofouling and condensation heat transfer with reduced ice adhesion.
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Affiliation(s)
- Kichang Bae
- Department of Metallurgical Engineering, Pukyong National University, Busan 48513, Republic of Korea
| | - Minju Kang
- Department of Metallurgical Engineering, Pukyong National University, Busan 48513, Republic of Korea
| | - Yeji Shin
- Department of Metallurgical Engineering, Pukyong National University, Busan 48513, Republic of Korea
| | - Eunyoung Choi
- Dongnam Division, Korea Institute of Industrial Technology, Yangsan 50623, Republic of Korea
| | - Young-Mog Kim
- Department of Food Science and Technology, Pukyong National University, Busan 48513, Republic of Korea
| | - Junghoon Lee
- Department of Metallurgical Engineering, Pukyong National University, Busan 48513, Republic of Korea
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13
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Yang K, Wang L, Zhang D, Yan Y, Ji XJ, Cao M, Shi ZZ, Wang LN. Nanomechanical probing of bacterial adhesion to biodegradable Zn alloys. BIOMATERIALS ADVANCES 2023; 145:213243. [PMID: 36566645 DOI: 10.1016/j.bioadv.2022.213243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Revised: 11/13/2022] [Accepted: 12/09/2022] [Indexed: 12/15/2022]
Abstract
Bacterial infections on implants cause an inflammatory response and even implant failure. Bacterial adhesion is an initial and critical step during implant infection. The prevention of bacterial adhesion to implant materials has attracted much attention, especially for biodegradable metals. A deep understanding of the mechanisms of bacterial adhesion to biodegradable metals is urgently needed. In this work, a bacterial probe based on atomic force spectroscopy was employed to determine the bacterial adhesion to Zn alloy, which depended on surface charge, roughness, and wettability. Negative surface charges of Zn, Zn-0.5Li, and 316L generated electrostatic repulsion force towards bacteria. The surface roughness of Zn-0.5Li was significantly increased by localized corrosion. Bacterial adhesion forces on Zn, Zn-0.5Li, and 316L were 325.2 pN, 519.1 pN, and 727.7 pN, respectively. The density of attached bacteria (early-stage bacterial adhesion) on these samples exhibited a positive correlation with the bacterial adhesion force. The bacterial adhesion force and adhesion work provide a quantitative determination of the interactions between bacteria and biodegradable alloys. These results provide a deeper understanding of early bacterial adhesion on Zn alloys, which can further guide the antibacterial surface design of biodegradable materials for clinical application.
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Affiliation(s)
- Kun Yang
- Beijing Advanced Innovation Center for Materials Genome Engineering, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, PR China
| | - Lei Wang
- Beijing Advanced Innovation Center for Materials Genome Engineering, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, PR China.
| | - Dawei Zhang
- Beijing Advanced Innovation Center for Materials Genome Engineering, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, PR China; Institute for Advanced Materials and Technology, University of Science and Technology Beijing, 30 Xueyuan Road, Haidian District, Beijing 100083, PR China
| | - Yu Yan
- Beijing Advanced Innovation Center for Materials Genome Engineering, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, PR China; Institute for Advanced Materials and Technology, University of Science and Technology Beijing, 30 Xueyuan Road, Haidian District, Beijing 100083, PR China
| | - Xiao-Jing Ji
- Beijing Advanced Innovation Center for Materials Genome Engineering, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, PR China
| | - Meng Cao
- Beijing Advanced Innovation Center for Materials Genome Engineering, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, PR China
| | - Zhang-Zhi Shi
- Beijing Advanced Innovation Center for Materials Genome Engineering, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, PR China
| | - Lu-Ning Wang
- Beijing Advanced Innovation Center for Materials Genome Engineering, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, PR China.
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14
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Jeong C, Jung J, Sheppard K, Choi CH. Control of the Nanopore Architecture of Anodic Alumina via Stepwise Anodization with Voltage Modulation and Pore Widening. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:342. [PMID: 36678095 PMCID: PMC9863362 DOI: 10.3390/nano13020342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 01/08/2023] [Accepted: 01/11/2023] [Indexed: 06/17/2023]
Abstract
Control of the morphology and hierarchy of the nanopore structures of anodic alumina is investigated by employing stepwise anodizing processes, alternating the two different anodizing modes, including mild anodization (MA) and hard anodization (HA), which are further mediated by a pore-widening (PW) step in between. For the experiment, the MA and HA are applied at the anodizing voltages of 40 and 100 V, respectively, in 0.3 M oxalic acid, at 1 °C, for fixed durations (30 min for MA and 0.5 min for HA), while the intermediate PW is applied in 0.1 M phosphoric acid at 30 °C for different durations. In particular, to examine the effects of the anodizing sequence and the PW time on the morphology and hierarchy of the nanopore structures formed, the stepwise anodization is conducted in two different ways: one with no PW step, such as MA→HA and HA→MA, and the other with the timed PW in between, such as MA→PW→MA, MA→PW→HA, HA→PW→HA, and HA→PW→MA. The results show that both the sequence of the voltage-modulated anodizing modes and the application of the intermediate PW step led to unique three-dimensional morphology and hierarchy of the nanopore structures of the anodic alumina beyond the conventional two-dimensional cylindrical pore geometry. It suggests that the stepwise anodizing process regulated by the sequence of the anodizing modes and the intermediate PW step can allow the design and fabrication of various types of nanopore structures, which can broaden the applications of the nanoporous anodic alumina with greater efficacy and versatility.
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Affiliation(s)
- Chanyoung Jeong
- Department of Advanced Materials Engineering, Dong-eui University, Busan 47340, Republic of Korea
- Department of Mechanical Engineering, Stevens Institute of Technology, Hoboken, NJ 07030, USA
| | - Jeki Jung
- Department of Mechanical Engineering, Stevens Institute of Technology, Hoboken, NJ 07030, USA
| | - Keith Sheppard
- Department of Chemical Engineering and Materials Science, Stevens Institute of Technology, Hoboken, NJ 07030, USA
| | - Chang-Hwan Choi
- Department of Mechanical Engineering, Stevens Institute of Technology, Hoboken, NJ 07030, USA
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15
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Wu XH, Liew YK, Lim WM, Mai C, Then YY. Blood compatible and noncytotoxic superhydrophobic graphene/titanium dioxide coating with antibacterial and antibiofilm properties. J Appl Polym Sci 2023. [DOI: 10.1002/app.53629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Xun Hui Wu
- School of Postgraduate Studies International Medical University Kuala Lumpur Malaysia
| | - Yun Khoon Liew
- Department of Life Sciences School of Pharmacy, International Medical University Kuala Lumpur Malaysia
| | - Wei Meng Lim
- School of Pharmacy Monash University Subang Jaya Selangor Malaysia
| | - Chun‐Wai Mai
- State Key Laboratory of Oncogenes and Related Genes, Renji‐Med X Clinical Stem Cell Research Center, Department of Urology Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University Shanghai China
| | - Yoon Yee Then
- Department of Pharmaceutical Chemistry School of Pharmacy, International Medical University Kuala Lumpur Malaysia
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16
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Zhai H, Yeo J. Computational Design of Antimicrobial Active Surfaces via Automated Bayesian Optimization. ACS Biomater Sci Eng 2023; 9:269-279. [PMID: 36537745 DOI: 10.1021/acsbiomaterials.2c01079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Biofilms pose significant problems for engineers in diverse fields, such as marine science, bioenergy, and biomedicine, where effective biofilm control is a long-term goal. The adhesion and surface mechanics of biofilms play crucial roles in generating and removing biofilm. Designing customized nanosurfaces with different surface topologies can alter the adhesive properties to remove biofilms more easily and greatly improve long-term biofilm control. To rapidly design such topologies, we employ individual-based modeling and Bayesian optimization to automate the design process and generate different active surfaces for effective biofilm removal. Our framework successfully generated optimized functional nanosurfaces for improved biofilm removal through applied shear and vibration. Densely distributed short pillar topography is the optimal geometry to prevent biofilm formation. Under fluidic shearing, the optimal topography is to sparsely distribute tall, slim, pillar-like structures. When subjected to either vertical or lateral vibrations, thick trapezoidal cones are found to be optimal. Optimizing the vibrational loading indicates a small vibration magnitude with relatively low frequencies is more efficient in removing biofilm. Our results provide insights into various engineering fields that require surface-mediated biofilm control. Our framework can also be applied to more general materials design and optimization.
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Affiliation(s)
- Hanfeng Zhai
- Sibley School of Mechanical and Aerospace Engineering, Cornell University, Ithaca, New York14850, United States
| | - Jingjie Yeo
- Sibley School of Mechanical and Aerospace Engineering, Cornell University, Ithaca, New York14850, United States
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17
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Paras, Yadav K, Kumar P, Teja DR, Chakraborty S, Chakraborty M, Mohapatra SS, Sahoo A, Chou MMC, Liang CT, Hang DR. A Review on Low-Dimensional Nanomaterials: Nanofabrication, Characterization and Applications. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 13:160. [PMID: 36616070 PMCID: PMC9824826 DOI: 10.3390/nano13010160] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2022] [Revised: 12/23/2022] [Accepted: 12/24/2022] [Indexed: 09/02/2023]
Abstract
The development of modern cutting-edge technology relies heavily on the huge success and advancement of nanotechnology, in which nanomaterials and nanostructures provide the indispensable material cornerstone. Owing to their nanoscale dimensions with possible quantum limit, nanomaterials and nanostructures possess a high surface-to-volume ratio, rich surface/interface effects, and distinct physical and chemical properties compared with their bulk counterparts, leading to the remarkably expanded horizons of their applications. Depending on their degree of spatial quantization, low-dimensional nanomaterials are generally categorized into nanoparticles (0D); nanorods, nanowires, and nanobelts (1D); and atomically thin layered materials (2D). This review article provides a comprehensive guide to low-dimensional nanomaterials and nanostructures. It begins with the classification of nanomaterials, followed by an inclusive account of nanofabrication and characterization. Both top-down and bottom-up fabrication approaches are discussed in detail. Next, various significant applications of low-dimensional nanomaterials are discussed, such as photonics, sensors, catalysis, energy storage, diverse coatings, and various bioapplications. This article would serve as a quick and facile guide for scientists and engineers working in the field of nanotechnology and nanomaterials.
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Affiliation(s)
- Paras
- Department of Chemical Engineering, Indian Institute of Technology, Kharagpur 721302, India
| | - Kushal Yadav
- Department of Materials and Optoelectronic Science, National Sun Yat-sen University, Kaohsiung 80424, Taiwan
- Department of Chemical Engineering, Indian Institute of Technology (Indian School of Mines), Dhanbad 826004, India
| | - Prashant Kumar
- Department of Chemical Engineering, Indian Institute of Technology, Kharagpur 721302, India
| | - Dharmasanam Ravi Teja
- Department of Civil Engineering, Indian Institute of Technology, Kharagpur 721302, India
| | - Sudipto Chakraborty
- Department of Chemical Engineering, Indian Institute of Technology, Kharagpur 721302, India
| | - Monojit Chakraborty
- Department of Chemical Engineering, Indian Institute of Technology, Kharagpur 721302, India
| | | | - Abanti Sahoo
- Department of Chemical Engineering, National Institute of Technology, Rourkela 769008, India
| | - Mitch M. C. Chou
- Department of Materials and Optoelectronic Science, National Sun Yat-sen University, Kaohsiung 80424, Taiwan
- Center of Crystal Research, National Sun Yat-sen University, Kaohsiung 80424, Taiwan
| | - Chi-Te Liang
- Department of Physics, National Taiwan University, Taipei 10617, Taiwan
- Center for Quantum Science and Engineering, National Taiwan University, Taipei 10617, Taiwan
- Taiwan Consortium of Emergent Crystalline Materials, National Taiwan University, Taipei 10617, Taiwan
| | - Da-Ren Hang
- Department of Materials and Optoelectronic Science, National Sun Yat-sen University, Kaohsiung 80424, Taiwan
- Center of Crystal Research, National Sun Yat-sen University, Kaohsiung 80424, Taiwan
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18
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The evaluation of prepared microstructure pattern by carbon-dioxide laser on zirconia-based ceramics for dental implant application: an in vitro study. Odontology 2022:10.1007/s10266-022-00781-x. [DOI: 10.1007/s10266-022-00781-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Accepted: 11/12/2022] [Indexed: 12/24/2022]
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19
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Facile fabrication of hydrophobic paper by HDTMS modified chitin nanocrystals coating for food packaging. Food Hydrocoll 2022. [DOI: 10.1016/j.foodhyd.2022.107915] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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20
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Li R, Zhao L, Yao A, Li Z, Wu F, Ding X, An H, Ye H, Zhang Y, Li H. A paraffin-wax-infused porous membrane with thermo-responsive properties for fouling-release microfiltration. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.121284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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21
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Zhang Q, Guan Y. Review: Application of metal additive manufacturing in oral dentistry. CURRENT OPINION IN BIOMEDICAL ENGINEERING 2022. [DOI: 10.1016/j.cobme.2022.100441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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22
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Khaskhoussi A, Calabrese L, Proverbio E. Anticorrosion Superhydrophobic Surfaces on AA6082 Aluminum Alloy by HF/HCl Texturing and Self-Assembling of Silane Monolayer. MATERIALS (BASEL, SWITZERLAND) 2022; 15:8549. [PMID: 36500045 PMCID: PMC9740352 DOI: 10.3390/ma15238549] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 11/24/2022] [Accepted: 11/25/2022] [Indexed: 06/17/2023]
Abstract
In this paper, the tailoring of superhydrophobic surfaces on AA6082 aluminum alloy by chemical etching in an HF/HCl solution, followed by silane self-assembling, was applied for enhanced corrosion protection in the marine field. In particular, different etching times were considered in order to optimize the treatment effect. The results indicate that all the prepared surfaces, after silanization, were characterized by superhydrophobic behavior with a contact angle higher than 150°. The contact and sliding angles strongly depend on the surface morphology at varying etching times. The optimum was observed with an etching time of 20 s, where a microscale coral-like structure coupled with a homogeneous and ordered pixel-like nanostructure was obtained on the aluminum surface showing a Cassie-Baxter superhydrophobic behavior with a water contact angle of 180° and a sliding angle equal to 0°. All superhydrophobic surfaces achieved an enhanced corrosion protection efficiency and impedance modulus up to two orders of magnitude higher than the as-received AA6082 in simulated seawater.
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23
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Rawlinson JM, Cox HJ, Hopkins G, Cahill P, Badyal JPS. Nature-Inspired Trapped Air Cushion Surfaces for Environmentally Sustainable Antibiofouling. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.130491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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24
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Anti-wetting surfaces with self-healing property: fabrication strategy and application. J IND ENG CHEM 2022. [DOI: 10.1016/j.jiec.2022.10.039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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25
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Antibacterial Adhesion Strategy for Dental Titanium Implant Surfaces: From Mechanisms to Application. J Funct Biomater 2022; 13:jfb13040169. [PMID: 36278638 PMCID: PMC9589972 DOI: 10.3390/jfb13040169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Revised: 09/25/2022] [Accepted: 09/26/2022] [Indexed: 11/17/2022] Open
Abstract
Dental implants are widely used to restore missing teeth because of their stability and comfort characteristics. Peri-implant infection may lead to implant failure and other profound consequences. It is believed that peri-implantitis is closely related to the formation of biofilms, which are difficult to remove once formed. Therefore, endowing titanium implants with anti-adhesion properties is an effective method to prevent peri-implant infection. Moreover, anti-adhesion strategies for titanium implant surfaces are critical steps for resisting bacterial adherence. This article reviews the process of bacterial adhesion, the material properties that may affect the process, and the anti-adhesion strategies that have been proven effective and promising in practice. This article intends to be a reference for further improvement of the antibacterial adhesion strategy in clinical application and for related research on titanium implant surfaces.
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26
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Durand H, Whiteley A, Mailley P, Nonglaton G. Combining Topography and Chemistry to Produce Antibiofouling Surfaces: A Review. ACS APPLIED BIO MATERIALS 2022; 5:4718-4740. [PMID: 36162127 DOI: 10.1021/acsabm.2c00586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Despite decades of research on the reduction of surface fouling from biomolecules or micro-organisms, the ultimate antibiofouling surface remains undiscovered. The recent covid-19 pandemic strengthened the crucial need for such treatments. Among the numerous approaches that are able to provide surfaces with antibiofouling properties, chemical, biological, and topographical strategies have been implemented for instance in the marine, medical, or food industries. However, many of these methods have a biocidal effect and, with antibioresistance and biocide resistance a growing threat on humanity, strategies based on reducing adsorption of biomolecules and micro-organism are necessary for long-term solutions. Bioinspired strategies, combining both surface chemistry and topography, are currently at the heart of the best innovative and sustainable solutions. The synergistic effect of micro/nanostructuration, together with engineered chemical or biological functionalization is believed to contribute to the development of antibiofouling surfaces. This review aims to present approaches combining hydrophobic or hydrophilic chemistries with a specific topography to avoid biofouling in various industrial environments and healthcare facilities.
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Affiliation(s)
| | - Amelia Whiteley
- Univ. Grenoble Alpes, CEA, LETI, DTBS, F-38000 Grenoble, France
| | - Pascal Mailley
- Univ. Grenoble Alpes, CEA, LETI, DTBS, F-38000 Grenoble, France
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27
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Bargel H, Trossmann VT, Sommer C, Scheibel T. Bioselectivity of silk protein-based materials and their bio-inspired applications. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2022; 13:902-921. [PMID: 36127898 PMCID: PMC9475208 DOI: 10.3762/bjnano.13.81] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Accepted: 08/23/2022] [Indexed: 06/15/2023]
Abstract
Adhesion to material surfaces is crucial for almost all organisms regarding subsequent biological responses. Mammalian cell attachment to a surrounding biological matrix is essential for maintaining their survival and function concerning tissue formation. Conversely, the adhesion and presence of microbes interferes with important multicellular processes of tissue development. Therefore, tailoring bioselective, biologically active, and multifunctional materials for biomedical applications is a modern focus of biomaterial research. Engineering biomaterials that stimulate and interact with cell receptors to support binding and subsequent physiological responses of multicellular systems attracted much interest in the last years. Further to this, the increasing threat of multidrug resistance of pathogens against antibiotics to human health urgently requires new material concepts for preventing microbial infestation and biofilm formation. Thus, materials exhibiting microbial repellence or antimicrobial behaviour to reduce inflammation, while selectively enhancing regeneration in host tissues are of utmost interest. In this context, protein-based materials are interesting candidates due to their natural origin, biological activity, and structural properties. Silk materials, in particular those made of spider silk proteins and their recombinant counterparts, are characterized by extraordinary properties including excellent biocompatibility, slow biodegradation, low immunogenicity, and non-toxicity, making them ideally suited for tissue engineering and biomedical applications. Furthermore, recombinant production technologies allow for application-specific modification to develop adjustable, bioactive materials. The present review focusses on biological processes and surface interactions involved in the bioselective adhesion of mammalian cells and repellence of microbes on protein-based material surfaces. In addition, it highlights the importance of materials made of recombinant spider silk proteins, focussing on the progress regarding bioselectivity.
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Affiliation(s)
- Hendrik Bargel
- Department of Biomaterials, University of Bayreuth, Prof.-Rüdiger-Bormann-Str. 1, 95447 Bayreuth, Germany
| | - Vanessa T Trossmann
- Department of Biomaterials, University of Bayreuth, Prof.-Rüdiger-Bormann-Str. 1, 95447 Bayreuth, Germany
| | - Christoph Sommer
- Department of Biomaterials, University of Bayreuth, Prof.-Rüdiger-Bormann-Str. 1, 95447 Bayreuth, Germany
| | - Thomas Scheibel
- Department of Biomaterials, University of Bayreuth, Prof.-Rüdiger-Bormann-Str. 1, 95447 Bayreuth, Germany
- Bayreuth Center of Material Science and Engineering (BayMat), University of Bayreuth, Universitätsstr. 30, 95440 Bayreuth, Germany
- Bavarian Polymer Institute (BPI), University of Bayreuth, Universitätsstr. 30, 95440 Bayreuth, Germany
- Bayreuth Center of Colloids and Interfaces (BZKG), University of Bayreuth, Universitätsstr. 30, 95440 Bayreuth, Germany
- Bayreuth Center for Molecular Biosciences (BZMB), University of Bayreuth, Universitätsstr. 30, 95440 Bayreuth, Germany
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28
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Dawson F, Yew WC, Orme B, Markwell C, Ledesma-Aguilar R, Perry JJ, Shortman IM, Smith D, Torun H, Wells G, Unthank MG. Self-Assembled, Hierarchical Structured Surfaces for Applications in (Super)hydrophobic Antiviral Coatings. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:10632-10641. [PMID: 35977085 PMCID: PMC9434993 DOI: 10.1021/acs.langmuir.2c01579] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/19/2022] [Revised: 08/03/2022] [Indexed: 06/15/2023]
Abstract
A versatile method for the creation of multitier hierarchical structured surfaces is reported, which optimizes both antiviral and hydrophobic (easy-clean) properties. The methodology exploits the availability of surface-active chemical groups while also manipulating both the surface micro- and nanostructure to control the way the surface coating interacts with virus particles within a liquid droplet. This methodology has significant advantages over single-tier structured surfaces, including the ability to overcome the droplet-pinning effect and in delivering surfaces with high static contact angles (>130°) and good antiviral efficacy (log kill >2). In addition, the methodology highlights a valuable approach for the creation of mechanically robust, nanostructured surfaces which can be prepared by spray application using nonspecialized equipment.
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Affiliation(s)
- Frances Dawson
- Northumbria
University, Newcastle
upon Tyne NE1 8ST, U.K.
| | - Wen C. Yew
- Northumbria
University, Newcastle
upon Tyne NE1 8ST, U.K.
| | - Bethany Orme
- Northumbria
University, Newcastle
upon Tyne NE1 8ST, U.K.
| | | | - Rodrigo Ledesma-Aguilar
- Institute
for Multiscale Thermofluids (IMT), School of Engineering, University of Edinburgh, Mayfield Road, Edinburgh EH9 3JL, Scotland, U.K.
| | | | - Ian M. Shortman
- Defence
Science and Technology Laboratory, Porton Down, Salisbury SP4 0JQ, U.K.
| | - Darren Smith
- Northumbria
University, Newcastle
upon Tyne NE1 8ST, U.K.
| | - Hamdi Torun
- Northumbria
University, Newcastle
upon Tyne NE1 8ST, U.K.
| | - Gary Wells
- Institute
for Multiscale Thermofluids (IMT), School of Engineering, University of Edinburgh, Mayfield Road, Edinburgh EH9 3JL, Scotland, U.K.
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29
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Chang Y, Bao M, Waitkus J, Cai H, Du K. On-Demand Fully Enclosed Superhydrophobic-Optofluidic Devices Enabled by Microstereolithography. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:10672-10678. [PMID: 35984448 PMCID: PMC9897971 DOI: 10.1021/acs.langmuir.2c01658] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Superhydrophobic surface-based optofluidics have been introduced to biosensors and unconventional optics with unique advantages, such as low light loss and power consumption. However, most of these platforms were made with planar-like microstructures and nanostructures, which may cause bonding issues and result in significant waveguide loss. Here, we introduce a fully enclosed superhydrophobic-based optofluidics system, enabled by a one-step microstereolithography procedure. Various microstructured cladding designs with a feature size down to 100 μm were studied and a "T-type" overhang design exhibits the lowest optical loss, regardless of the excitation wavelength. Surprisingly, the optical loss of superhydrophobic-based optofluidics is not solely decided by the solid area fraction at the solid/water/air interface, but also the cross-section shape and the effective cladding layer composition. We show that this fully enclosed optofluidic system can be used for CRISPR-labeled quantum dot quantification, intended for in vitro and in vivo CRISPR therapeutics.
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Affiliation(s)
- Yu Chang
- Department of Mechanical Engineering, Rochester Institute of Technology, Rochester, New York 14623, United States
| | - Mengdi Bao
- Department of Mechanical Engineering, Rochester Institute of Technology, Rochester, New York 14623, United States
| | - Jacob Waitkus
- Department of Mechanical Engineering, Rochester Institute of Technology, Rochester, New York 14623, United States
| | - Haogang Cai
- Tech4Health Institute and Department of Radiology, NYU Langone Health, New York, New York 10016, United States
| | - Ke Du
- Department of Mechanical Engineering, Rochester Institute of Technology, Rochester, New York 14623, United States
- Department of Microsystems Engineering, Rochester Institute of Technology, Rochester, New York 14623, United States
- School of Chemistry and Materials Science, Rochester Institute of Technology, Rochester, New York 14623, United States
- College of Health Science and Technology, Rochester Institute of Technology, Rochester, New York 14623, United States
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30
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Gupta A, Maruthapandi M, Das P, Saravanan A, Jacobi G, Natan M, Banin E, Luong JHT, Gedanken A. Cuprous Oxide Nanoparticles Decorated Fabric Materials with Anti-biofilm Properties. ACS APPLIED BIO MATERIALS 2022; 5:4310-4320. [PMID: 35952666 DOI: 10.1021/acsabm.2c00508] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Considering the global spread of bacterial infections, the development of anti-biofilm surfaces with high antimicrobial activities is highly desired. This work unraveled a simple, sonochemical method for coating Cu2O nanoparticles (NPs) on three different flexible substrates: polyester (PE), nylon 2 (N2), and polyethylene (PEL). The introduction of Cu2O NPs on these substrates enhanced their surface hydrophobicity, induced ROS generation, and completely inhibited the growth of sensitive (Escherichia coli and Staphyloccocus aureus) and drug-resistant (MDR E. coli and MRSA) planktonic and biofilm. The experimental results confirmed that Cu2O-PE exhibited complete biofilm mass reduction ability for all four strains, whereas Cu2O-N2 showed more than 99% biomass inhibition against both drug-resistant and sensitive pathogens in 6 h. Moreover, Cu2O-PEL also indicated a 99.95, 97.73, 98.00, and 99.20% biomass reduction of MRSA, MDR E. coli, E. coli, and S. aureus, respectively. All substrates were investigated for time-dependent inhibitions, and the associated biofilm mass and log reduction were evaluated. The mechanisms of Cu2O NP action against the mature biofilms include the generation of reactive oxygen species (ROS) as well as electrostatic interaction between Cu2O NPs and bacterial membranes. The current study could pave the way for the commercialization of sonochemically coated Cu2O NP flexible substrates for the prevention of microbial contamination in hospitals and industrial environments.
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Affiliation(s)
- Akanksha Gupta
- Department of Chemistry, Faculty of Exact Sciences, Bar-Ilan University, Ramat-Gan 5290002, Israel
- Bar-Ilan Institute for Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, Ramat-Gan 5290002, Israel
| | - Moorthy Maruthapandi
- Department of Chemistry, Faculty of Exact Sciences, Bar-Ilan University, Ramat-Gan 5290002, Israel
- Bar-Ilan Institute for Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, Ramat-Gan 5290002, Israel
| | - Poushali Das
- Department of Chemistry, Faculty of Exact Sciences, Bar-Ilan University, Ramat-Gan 5290002, Israel
- Bar-Ilan Institute for Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, Ramat-Gan 5290002, Israel
| | - Arumugam Saravanan
- Department of Chemistry, Faculty of Exact Sciences, Bar-Ilan University, Ramat-Gan 5290002, Israel
- Bar-Ilan Institute for Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, Ramat-Gan 5290002, Israel
| | - Gila Jacobi
- Bar-Ilan Institute for Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, Ramat-Gan 5290002, Israel
- Mina and Everard Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat Gan5290002, Israel
| | - Michal Natan
- Bar-Ilan Institute for Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, Ramat-Gan 5290002, Israel
- Mina and Everard Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat Gan5290002, Israel
| | - Ehud Banin
- Bar-Ilan Institute for Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, Ramat-Gan 5290002, Israel
- Mina and Everard Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat Gan5290002, Israel
| | - John H T Luong
- School of Chemistry, University College Cork, Cork T12 YN60, Ireland
| | - Aharon Gedanken
- Department of Chemistry, Faculty of Exact Sciences, Bar-Ilan University, Ramat-Gan 5290002, Israel
- Bar-Ilan Institute for Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, Ramat-Gan 5290002, Israel
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31
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Ashok D, Taheri M, Garg P, Webb D, Parajuli P, Wang Y, Funnell B, Taylor B, Tscharke DC, Tsuzuki T, Verma NK, Tricoli A, Nisbet DR. Shielding Surfaces from Viruses and Bacteria with a Multiscale Coating. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2201415. [PMID: 35657076 PMCID: PMC9376840 DOI: 10.1002/advs.202201415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 05/10/2022] [Indexed: 06/15/2023]
Abstract
The spread of viral and bacterial pathogens mediated by contact with surfaces is a leading cause of infection worldwide. COVID-19 and the continuous rise of deaths associated with antibiotic-resistant bacteria highlight the need to impede surface-mediated transmission. A sprayable coating with an intrinsic ability to resist the uptake of bacteria and viruses from surfaces and droplets, such as those generated by sneezing or coughing, is reported. The coating also provides an effective microbicidal functionality against bacteria, providing a dual barrier against pathogen uptake and transmission. This antimicrobial functionality is fully preserved following scratching and other induced damage to its surface or 9 days of submersion in a highly concentrated suspension of bacteria. The coatings also register an 11-fold decrease in viral contamination compared to the noncoated surfaces.
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Affiliation(s)
- Deepu Ashok
- Laboratory of Advanced BiomaterialsResearch School of Chemistry and the John Curtin School of Medical ResearchThe Australian National UniversityCanberra2601Australia
- Nanotechnology Research LaboratoryResearch School of ChemistryThe Australian National UniversityCanberra2601Australia
| | - Mahdiar Taheri
- Laboratory of Advanced Nanomaterials for SustainabilityResearch School of ElectricalEnergy and Materials EngineeringThe Australian National UniversityCanberra2601Australia
| | - Puneet Garg
- Laboratory of Advanced BiomaterialsResearch School of Chemistry and the John Curtin School of Medical ResearchThe Australian National UniversityCanberra2601Australia
- Nanotechnology Research LaboratoryResearch School of ChemistryThe Australian National UniversityCanberra2601Australia
| | - Daryl Webb
- Centre for Advanced MicroscopyAustralian National UniversityCanberra2601Australia
| | - Pawan Parajuli
- Division of Biomedical Science and BiochemistryResearch School of BiologyThe Australian National UniversityCanberra2601Australia
| | - Yi Wang
- Laboratory of Advanced BiomaterialsResearch School of Chemistry and the John Curtin School of Medical ResearchThe Australian National UniversityCanberra2601Australia
| | - Bronte Funnell
- Laboratory of Advanced BiomaterialsResearch School of Chemistry and the John Curtin School of Medical ResearchThe Australian National UniversityCanberra2601Australia
| | - Bradley Taylor
- Laboratory of Advanced BiomaterialsResearch School of Chemistry and the John Curtin School of Medical ResearchThe Australian National UniversityCanberra2601Australia
| | - David C. Tscharke
- John Curtin School of Medical ResearchAustralian National University131 Garran RoadActonACT2601Australia
| | - Takuya Tsuzuki
- Laboratory of Advanced Nanomaterials for SustainabilityResearch School of ElectricalEnergy and Materials EngineeringThe Australian National UniversityCanberra2601Australia
| | - Naresh K. Verma
- Division of Biomedical Science and BiochemistryResearch School of BiologyThe Australian National UniversityCanberra2601Australia
| | - Antonio Tricoli
- Nanotechnology Research LaboratoryResearch School of ChemistryThe Australian National UniversityCanberra2601Australia
- Nanotechnology Research LaboratoryFaculty of EngineeringThe University of SydneySydney2006Australia
| | - David R. Nisbet
- Laboratory of Advanced BiomaterialsResearch School of Chemistry and the John Curtin School of Medical ResearchThe Australian National UniversityCanberra2601Australia
- The Graeme Clark InstituteFaculty of Engineering and Information Technology and Faculty of MedicineDentistry and Health ServicesThe University of MelbourneMelbourne3010Australia
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32
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Senevirathne SWAI, Toh YC, Yarlagadda PKDV. Fluid Flow Induces Differential Detachment of Live and Dead Bacterial Cells from Nanostructured Surfaces. ACS OMEGA 2022; 7:23201-23212. [PMID: 35847259 PMCID: PMC9280952 DOI: 10.1021/acsomega.2c01208] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Nanotopographic surfaces are proven to be successful in killing bacterial cells upon contact. This non-chemical bactericidal property has paved an alternative way of fighting bacterial colonization and associated problems, especially the issue of bacteria evolving resistance against antibiotic and antiseptic agents. Recent advancements in nanotopographic bactericidal surfaces have made them suitable for many applications in medical and industrial sectors. The bactericidal effect of nanotopographic surfaces is classically studied under static conditions, but the actual potential applications do have fluid flow in them. In this study, we have studied how fluid flow can affect the adherence of bacterial cells on nanotopographic surfaces. Gram-positive and Gram-negative bacterial species were tested under varying fluid flow rates for their retention and viability after flow exposure. The total number of adherent cells for both species was reduced in the presence of flow, but there was no flowrate dependency. There was a significant reduction in the number of live cells remaining on nanotopographic surfaces with an increasing flowrate for both species. Conversely, we observed a flowrate-independent increase in the number of adherent dead cells. Our results indicated that the presence of flow differentially affected the adherent live and dead bacterial cells on nanotopographic surfaces. This could be because dead bacterial cells were physically pierced by the nano-features, whereas live cells adhered via physiochemical interactions with the surface. Therefore, fluid shear was insufficient to overcome adhesion forces between the surface and dead cells. Furthermore, hydrodynamic forces due to the flow can cause more planktonic and detached live cells to collide with nano-features on the surface, causing more cells to lyse. These results show that nanotopographic surfaces do not have self-cleaning ability as opposed to natural bactericidal nanotopographic surfaces, and nanotopographic surfaces tend to perform better under flow conditions. These findings are highly useful for developing and optimizing nanotopographic surfaces for medical and industrial applications.
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Affiliation(s)
- S. W.
M. A. Ishantha Senevirathne
- Centre
for Biomedical Technologies, Queensland
University of Technology, Brisbane, QLD 4000, Australia
- School
of Mechanical, Medical, and Process Engineering, Faculty of Engineering, Queensland University of Technology, Brisbane 4000 QLD Australia
| | - Yi-Chin Toh
- Centre
for Biomedical Technologies, Queensland
University of Technology, Brisbane, QLD 4000, Australia
- School
of Mechanical, Medical, and Process Engineering, Faculty of Engineering, Queensland University of Technology, Brisbane 4000 QLD Australia
| | - Prasad K. D. V. Yarlagadda
- Centre
for Biomedical Technologies, Queensland
University of Technology, Brisbane, QLD 4000, Australia
- School
of Mechanical, Medical, and Process Engineering, Faculty of Engineering, Queensland University of Technology, Brisbane 4000 QLD Australia
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33
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Recent Progress on Bioinspired Antibacterial Surfaces for Biomedical Application. Biomimetics (Basel) 2022; 7:biomimetics7030088. [PMID: 35892358 PMCID: PMC9326651 DOI: 10.3390/biomimetics7030088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2022] [Revised: 06/29/2022] [Accepted: 06/29/2022] [Indexed: 12/10/2022] Open
Abstract
Surface bacterial fouling has become an urgent global challenge that calls for resilient solutions. Despite the effectiveness in combating bacterial invasion, antibiotics are susceptible to causing microbial antibiotic resistance that threatens human health and compromises the medication efficacy. In nature, many organisms have evolved a myriad of surfaces with specific physicochemical properties to combat bacteria in diverse environments, providing important inspirations for implementing bioinspired approaches. This review highlights representative natural antibacterial surfaces and discusses their corresponding mechanisms, including repelling adherent bacteria through tailoring surface wettability and mechanically killing bacteria via engineering surface textures. Following this, we present the recent progress in bioinspired active and passive antibacterial strategies. Finally, the biomedical applications and the prospects of these antibacterial surfaces are discussed.
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34
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Kallas P, Valen H, Hulander M, Gadegaard N, Stormonth-Darling J, O'Reilly P, Thiede B, Andersson M, Haugen HJ. Protein-coated nanostructured surfaces affect the adhesion of Escherichia coli. NANOSCALE 2022; 14:7736-7746. [PMID: 35579413 PMCID: PMC9135173 DOI: 10.1039/d2nr00976e] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Accepted: 04/20/2022] [Indexed: 06/15/2023]
Abstract
Developing new implant surfaces with anti-adhesion bacterial properties used for medical devices remains a challenge. Here we describe a novel study investigating nanotopography influences on bacterial adhesion on surfaces with controlled interspatial nanopillar distances. The surfaces were coated with proteins (fibrinogen, collagen, serum and saliva) prior to E. coli-WT adhesion under flow conditions. PiFM provided chemical mapping and showed that proteins adsorbed both between and onto the nanopillars with a preference for areas between the nanopillars. E. coli-WT adhered least to protein-coated areas with low surface nanopillar coverage, most to surfaces coated with saliva, while human serum led to the lowest adhesion. Protein-coated nanostructured surfaces affected the adhesion of E. coli-WT.
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Affiliation(s)
- Pawel Kallas
- Department of Biomaterials, Institute of Clinical Dentistry, University of Oslo, 0455 Oslo, Norway.
| | - Håkon Valen
- Nordic Institute of Dental Materials, 0855 Oslo, Norway
| | - Mats Hulander
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, 412 58 Göteborg, Sweden
| | - Nikolaj Gadegaard
- James Watt School of Engineering, University of Glasgow, G12 8QQ Glasgow, UK
| | | | | | - Bernd Thiede
- Department of Biosciences, The Faculty of Mathematics and Natural Sciences, University of Oslo, 0371 Oslo, Norway
| | - Martin Andersson
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, 412 58 Göteborg, Sweden
| | - Håvard Jostein Haugen
- Department of Biomaterials, Institute of Clinical Dentistry, University of Oslo, 0455 Oslo, Norway.
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35
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Wu S, Zhang D, Gong H, Wang Z, Huang Y, Guo L, Hu C, Yan H, Kang J, Han J, Liu Z. Controlling Superhydrophobicity of Aluminum with Hierarchical Micro‐Nanostructure Film for Superb Self‐Cleaning and Anti‐Corrosion. ChemistrySelect 2022. [DOI: 10.1002/slct.202200525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Shen Wu
- College of Science Civil Aviation University of China Tianjin 300300 China
| | - Di Zhang
- College of Science Civil Aviation University of China Tianjin 300300 China
| | - He Gong
- College of Science Civil Aviation University of China Tianjin 300300 China
| | - Zengyi Wang
- College of Science Civil Aviation University of China Tianjin 300300 China
| | - Yi Huang
- College of Science Civil Aviation University of China Tianjin 300300 China
| | - Lide Guo
- College of Science Civil Aviation University of China Tianjin 300300 China
| | - Chenxi Hu
- College of Science Civil Aviation University of China Tianjin 300300 China
| | - Huiyu Yan
- College of Science Civil Aviation University of China Tianjin 300300 China
| | - Jianhai Kang
- College of Science Civil Aviation University of China Tianjin 300300 China
| | - Jianhua Han
- College of Science Civil Aviation University of China Tianjin 300300 China
| | - Zhifeng Liu
- School of Materials Science and Engineering Tianjin Chengjian University 300384 Tianjin China
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36
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Li Y, Chen R, Wang F, Cai X, Wang Y. Antimicrobial peptide GL13K immobilized onto SLA-treated titanium by silanization: antibacterial effect against methicillin-resistant Staphylococcus aureus (MRSA). RSC Adv 2022; 12:6918-6929. [PMID: 35424597 PMCID: PMC8981691 DOI: 10.1039/d1ra04974g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Accepted: 02/22/2022] [Indexed: 02/03/2023] Open
Abstract
Infection is the main reason for implant failure, and the incidence of drug-resistant bacterial infection has increased in recent years. Further, methicillin-resistant Staphylococcus aureus (MRSA)-related implant infection has become a serious worldwide threat. New strategies, other than antibiotics, to tackle drug-resistance, are of high clinical significance. Antimicrobial peptides show clear superiority over conventional antibiotics in inhibiting drug-resistant bacteria. In the present study, we combined the antimicrobial peptide, GL13K, with sandblasting and acid-etching (SLA)-treated titanium using a silane coupling agent. Field emission scanning electron microscopy images showed the morphology of the coating. Attenuated total reflectance Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy results confirmed loading of GL13K, and the hydrophilicity of the SLA-GL13K coating was evaluated by water contact angle analysis. The releasing study of samples showed that the coating has a sustained releasing profile. SLA-GL13K coating exhibited strong contact- and release-killing abilities against MRSA, E. coli, and S. aureus. Meanwhile, Cell Counting Kit 8 analysis and examination of cell morphology demonstrated that the SLA-GL13K coating had good cytocompatibility at antibacterial concentrations. Overall, all these results suggest that SLA-GL13K coating can be successfully fabricated using silanization, and is a promising candidate for controlling MRSA-induced implant-related infection.
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Affiliation(s)
- Yusang Li
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University Wuhan China
| | - Ruiying Chen
- Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, College of Stomatology, Shanghai Jiao Tong University, Department of Implant Dentistry Shanghai China
| | - Fushi Wang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University Wuhan China
- Hospital of Stomatology Wuhan University, Department of Cariology and Endodontics Wuhan China
| | - Xinjie Cai
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University Wuhan China
- Hospital of Stomatology Wuhan University, Department of Prosthodontics Wuhan China
| | - Yining Wang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University Wuhan China
- Hospital of Stomatology Wuhan University, Department of Prosthodontics Wuhan China
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37
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Sorzabal-Bellido I, Barbieri L, Beckett AJ, Prior IA, Susarrey-Arce A, Tiggelaar RM, Fothergill J, Raval R, Diaz Fernandez YA. Effect of Local Topography on Cell Division of Staphylococcus spp. NANOMATERIALS 2022; 12:nano12040683. [PMID: 35215010 PMCID: PMC8877970 DOI: 10.3390/nano12040683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 02/08/2022] [Accepted: 02/10/2022] [Indexed: 01/27/2023]
Abstract
Surface engineering is a promising strategy to limit or prevent the formation of biofilms. The use of topographic cues to influence early stages of biofilm formationn has been explored, yet many fundamental questions remain unanswered. In this work, we develop a topological model supported by direct experimental evidence, which is able to explain the effect of local topography on the fate of bacterial micro-colonies of Staphylococcus spp. We demonstrate how topological memory at the single-cell level, characteristic of this genus of Gram-positive bacteria, can be exploited to influence the architecture of micro-colonies and the average number of surface anchoring points over nano-patterned surfaces, formed by vertically aligned silicon nanowire arrays that can be reliably produced on a commercial scale, providing an excellent platform to investigate the effect of topography on the early stages of Staphylococcus spp. colonisation. The surfaces are not intrinsically antimicrobial, yet they delivered a topography-based bacteriostatic effect and a significant disruption of the local morphology of micro-colonies at the surface. The insights from this work could open new avenues towards designed technologies for biofilm engineering and prevention, based on surface topography.
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Affiliation(s)
- Ioritz Sorzabal-Bellido
- Surface Science Research Centre and Open Innovation Hub for Antimicrobial Surfaces, Department of Chemistry, University of Liverpool, Liverpool L69 7ZD, UK; (I.S.-B.); (L.B.)
| | - Luca Barbieri
- Surface Science Research Centre and Open Innovation Hub for Antimicrobial Surfaces, Department of Chemistry, University of Liverpool, Liverpool L69 7ZD, UK; (I.S.-B.); (L.B.)
- Institute of Infection and Global Health, University of Liverpool, Liverpool L69 3BX, UK;
| | - Alison J. Beckett
- Biomedical Electron Microscopy Unit, University of Liverpool, Liverpool L69 3BX, UK; (A.J.B.); (I.A.P.)
| | - Ian A. Prior
- Biomedical Electron Microscopy Unit, University of Liverpool, Liverpool L69 3BX, UK; (A.J.B.); (I.A.P.)
| | - Arturo Susarrey-Arce
- Mesoscale Chemical Systems, MESA+ Institute, University of Twente, 7522 NB Enschede, The Netherlands;
| | - Roald M. Tiggelaar
- NanoLab Cleanroom, MESA+ Institute, University of Twente, 7522 NB Enschede, The Netherlands;
| | - Joanne Fothergill
- Institute of Infection and Global Health, University of Liverpool, Liverpool L69 3BX, UK;
| | - Rasmita Raval
- Surface Science Research Centre and Open Innovation Hub for Antimicrobial Surfaces, Department of Chemistry, University of Liverpool, Liverpool L69 7ZD, UK; (I.S.-B.); (L.B.)
- Correspondence: (R.R.); (Y.A.D.F.)
| | - Yuri A. Diaz Fernandez
- Surface Science Research Centre and Open Innovation Hub for Antimicrobial Surfaces, Department of Chemistry, University of Liverpool, Liverpool L69 7ZD, UK; (I.S.-B.); (L.B.)
- Correspondence: (R.R.); (Y.A.D.F.)
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38
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Lohmann SC, Tripathy A, Milionis A, Keller A, Poulikakos D. Effect of Flexibility and Size of Nanofabricated Topographies on the Mechanobactericidal Efficacy of Polymeric Surfaces. ACS APPLIED BIO MATERIALS 2022; 5:1564-1575. [PMID: 35176858 DOI: 10.1021/acsabm.1c01318] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Driven by the growing threat of antimicrobial resistance, the design of intrinsically bactericidal surfaces has been gaining significant attention. Proposed surface topography designs are often inspired by naturally occurring nanopatterns on insect wings that mechanically damage bacteria via membrane deformation. The stability of and the absence of chemicals in such surfaces support their facile and sustainable employment in avoiding surface-born pathogen transmission. Recently, the deflection of controllably nanofabricated pillar arrays has been shown to strongly affect bactericidal activity, with the limits of mechanical effectiveness of such structures remaining largely unexplored. Here, we examine the limits of softer, commonly used polymeric materials and investigate the interplay between pillar nanostructure sizing and flexibility for effective antibacterial functionality. A facile, scalable, UV nanoimprint lithography method was used to fabricate nanopillar array topographies of variable sizes and flexibilities. It was found that bacterial death on nanopillars in the range of diameters ≤100 nm and Young's moduli ≥1.3 GPa is increased by 3.5- to 5.6-fold, while thicker or softer pillars did not reduce bacterial viability. To further support our findings, we performed a finite element analysis of pillar deformation. It revealed that differences in the amount of stress exerted on bacterial membranes, generated from the stored elastic energy in flexible pillars, contribute to the observed bactericidal performance.
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Affiliation(s)
- Sophie C Lohmann
- Laboratory of Thermodynamics in Emerging Technologies, ETH Zurich, Zurich 8092, Switzerland
| | - Abinash Tripathy
- Laboratory of Thermodynamics in Emerging Technologies, ETH Zurich, Zurich 8092, Switzerland
| | - Athanasios Milionis
- Laboratory of Thermodynamics in Emerging Technologies, ETH Zurich, Zurich 8092, Switzerland
| | - Anja Keller
- Institute of Food, Nutrition and Health, ETH Zurich, Zurich 8092, Switzerland
| | - Dimos Poulikakos
- Laboratory of Thermodynamics in Emerging Technologies, ETH Zurich, Zurich 8092, Switzerland
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Choudhari KS, Choi CH, Chidangil S, George SD. Recent Progress in the Fabrication and Optical Properties of Nanoporous Anodic Alumina. NANOMATERIALS 2022; 12:nano12030444. [PMID: 35159789 PMCID: PMC8838176 DOI: 10.3390/nano12030444] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 01/24/2022] [Accepted: 01/26/2022] [Indexed: 02/06/2023]
Abstract
The fabrication of a thick oxide layer onto an aluminum surface via anodization has been a subject of intense research activity for more than a century, largely due to protective and decorative applications. The capability to create well-defined pores via a cost-effective electrochemical oxidation technique onto the surface has made a major renaissance in the field, as the porous surfaces exhibit remarkably different properties compared to a bulk oxide layer. Amongst the various nanoporous structures being investigated, nanoporous anodic alumina (NAA) with well-organized and highly ordered hexagonal honeycomb-like pores has emerged as the most popular nanomaterial due to its wide range of applications, ranging from corrosion resistance to bacterial repelling surfaces. As compared to conventional nanostructure fabrication, the electrochemical anodization route of NAA with well-controlled pore parameters offers an economical route for fabricating nanoscale materials. The review comprehensively reflects the progress made in the fabrication route of NAA to obtain the material with desired pore properties, with a special emphasis on self-organization and pore growth kinetics. Detailed accounts of the various conditions that can play an important role in pore growth kinetics and pore parameters are presented. Further, recent developments in the field of controlling optical properties of NAA are discussed. A critical outlook on the future trends of the fabrication of NAA and its optical properties on the emerging nanomaterials, sensors, and devices are also outlined.
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Affiliation(s)
- Khoobaram S. Choudhari
- Department of Atomic and Molecular Physics, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India;
- Correspondence: (K.S.C.); (S.D.G.)
| | - Chang-Hwan Choi
- Department of Mechanical Engineering, Stevens Institute of Technology, Hoboken, NJ 07030, USA;
| | - Santhosh Chidangil
- Department of Atomic and Molecular Physics, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India;
| | - Sajan D. George
- Department of Atomic and Molecular Physics, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India;
- Centre for Applied Nanosciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India
- Correspondence: (K.S.C.); (S.D.G.)
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Recent Advances in Metal-Based Antimicrobial Coatings for High-Touch Surfaces. Int J Mol Sci 2022; 23:ijms23031162. [PMID: 35163084 PMCID: PMC8835042 DOI: 10.3390/ijms23031162] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Revised: 01/14/2022] [Accepted: 01/19/2022] [Indexed: 02/06/2023] Open
Abstract
International interest in metal-based antimicrobial coatings to control the spread of bacteria, fungi, and viruses via high contact human touch surfaces are growing at an exponential rate. This interest recently reached an all-time high with the outbreak of the deadly COVID-19 disease, which has already claimed the lives of more than 5 million people worldwide. This global pandemic has highlighted the major role that antimicrobial coatings can play in controlling the spread of deadly viruses such as SARS-CoV-2 and scientists and engineers are now working harder than ever to develop the next generation of antimicrobial materials. This article begins with a review of three discrete microorganism-killing phenomena of contact-killing surfaces, nanoprotrusions, and superhydrophobic surfaces. The antimicrobial properties of metals such as copper (Cu), silver (Ag), and zinc (Zn) are reviewed along with the effects of combining them with titanium dioxide (TiO2) to create a binary or ternary contact-killing surface coatings. The self-cleaning and bacterial resistance of purely structural superhydrophobic surfaces and the potential of physical surface nanoprotrusions to damage microbial cells are then considered. The article then gives a detailed discussion on recent advances in attempting to combine these individual phenomena to create super-antimicrobial metal-based coatings with binary or ternary killing potential against a broad range of microorganisms, including SARS-CoV-2, for high-touch surface applications such as hand rails, door plates, and water fittings on public transport and in healthcare, care home and leisure settings as well as personal protective equipment commonly used in hospitals and in the current COVID-19 pandemic.
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Sonnleitner D, Sommer C, Scheibel T, Lang G. Approaches to inhibit biofilm formation applying natural and artificial silk-based materials. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 131:112458. [PMID: 34857315 DOI: 10.1016/j.msec.2021.112458] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Revised: 09/22/2021] [Accepted: 09/23/2021] [Indexed: 12/13/2022]
Abstract
The discovery of penicillin started a new era of health care since it allowed the effective treatment of formerly deadly infections. As a drawback, its overuse led to a growing number of multi-drug resistant pathogens. Challenging this arising threat, material research focuses on the development of microbe-killing or microbe repellent agents implementing such functions directly into materials. Due to their biocompatibility, non-immunogenicity and mechanical strength, silk-based materials are attractive candidates for applications in the biomedical field. Furthermore, it has been observed that silks display high persistency in their natural environment giving reason to suspect that they might be attractive candidates to prevent microbial infestation. The current review describes the process of biofilm formation on medical devices and the most common strategies to prevent it, divided into effects of surface topography, material modification and integrated additives. In this context, recent state of the art developments in the field of natural and artificial silk-based materials with microbe-repellant or antimicrobial properties are addressed. These silk properties are controversially discussed and conclusions are drawn as to which parameters will be decisive for the successful design of new bio-functional materials based on the blueprint of silk proteins.
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Affiliation(s)
- David Sonnleitner
- Biopolymer Processing, Faculty of Engineering Science, University of Bayreuth, Germany
| | - Christoph Sommer
- Chair of Biomaterials, Faculty of Engineering Science, University of Bayreuth, Germany
| | - Thomas Scheibel
- Chair of Biomaterials, Faculty of Engineering Science, University of Bayreuth, Germany
| | - Gregor Lang
- Biopolymer Processing, Faculty of Engineering Science, University of Bayreuth, Germany.
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Jann J, Drevelle O, Chen XG, Auclair-Gilbert M, Soucy G, Faucheux N, Fortier LC. Rapid antibacterial activity of anodized aluminum-based materials impregnated with quaternary ammonium compounds for high-touch surfaces to limit transmission of pathogenic bacteria. RSC Adv 2021; 11:38172-38188. [PMID: 35498065 PMCID: PMC9044312 DOI: 10.1039/d1ra07159a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Accepted: 11/22/2021] [Indexed: 01/01/2023] Open
Abstract
Infections caused by multidrug-resistant bacteria are a major public health problem. Their transmission is strongly linked to cross contamination via inert surfaces, which can serve as reservoirs for pathogenic microorganisms. To address this problem, antibacterial materials applied to high-touch surfaces have been developed. However, reaching a rapid and lasting effectiveness under real life conditions of use remains challenging. In the present paper, hard-anodized aluminum (AA) materials impregnated with antibacterial agents (quaternary ammonium compounds (QACs) and/or nitrate silver (AgNO3)) were prepared and characterized. The thickness of the anodized layer was about 50 μm with pore diameter of 70 nm. AA with QACs and/or AgNO3 had a water contact angle varying between 45 and 70°. The antibacterial activity of the materials was determined under different experimental settings to better mimic their use, and included liquid, humid, and dry conditions. AA-QAC surfaces demonstrated excellent efficiency, killing >99.9% of bacteria in 5 min on a wide range of Gram-positive (Staphylococcus aureus, Clostridioides difficile, vancomycin-resistant Enterococcus faecium) and Gram-negative (streptomycin-resistant Salmonella typhimurium and encapsulated Klebsiella pneumoniae) pathogens. AA-QACs showed a faster antibacterial activity (from 0.25 to 5 min) compared with antibacterial copper used as a reference (from 15 min to more than 1 h). We show that to maintain their high performance, AA-QACs should be used in low humidity environments and should be cleaned with solutions composed of QACs. Altogether, AA-QAC materials constitute promising candidates to prevent the transmission of pathogenic bacteria on high-touch surfaces.
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Affiliation(s)
- Jessica Jann
- Department of Chemical and Biotechnological Engineering, Faculty of Engineering, Université de Sherbrooke 2500 boul. de l'Université Sherbrooke Québec J1K 2R1 Canada .,Clinical Research Center of Centre Hospitalier Universitaire de Sherbrooke 12e Avenue N Sherbrooke Québec J1H 5N4 Canada.,Department of Microbiology and Infectious Diseases, Faculty of Medicine and Health Sciences, Université de Sherbrooke 3201 rue Jean Mignault Sherbrooke Québec J1E 4K8 Canada
| | - Olivier Drevelle
- Department of Chemical and Biotechnological Engineering, Faculty of Engineering, Université de Sherbrooke 2500 boul. de l'Université Sherbrooke Québec J1K 2R1 Canada
| | - X Grant Chen
- Department of Applied Science, University of Quebec in Chicoutimi Saguenay Quebec G7H 2B1 Canada
| | | | - Gervais Soucy
- Department of Chemical and Biotechnological Engineering, Faculty of Engineering, Université de Sherbrooke 2500 boul. de l'Université Sherbrooke Québec J1K 2R1 Canada
| | - Nathalie Faucheux
- Department of Chemical and Biotechnological Engineering, Faculty of Engineering, Université de Sherbrooke 2500 boul. de l'Université Sherbrooke Québec J1K 2R1 Canada .,Clinical Research Center of Centre Hospitalier Universitaire de Sherbrooke 12e Avenue N Sherbrooke Québec J1H 5N4 Canada
| | - Louis-Charles Fortier
- Department of Microbiology and Infectious Diseases, Faculty of Medicine and Health Sciences, Université de Sherbrooke 3201 rue Jean Mignault Sherbrooke Québec J1E 4K8 Canada
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Li R, Zhao L, Yao A, Si D, Shang Y, Ding X, An H, Ye H, Zhang Y, Li H. Design of Lubricant-Infused Surfaces Based on Mussel-Inspired Nanosilica Coatings: Solving Adhesion by Pre-Adhesion. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:10708-10719. [PMID: 34450019 DOI: 10.1021/acs.langmuir.1c01305] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Slippery liquid-infused porous surfaces (SLIPSs) have attracted wide interest with regard to their excellent liquid repellency properties and broad applications in various fields associated with anti-adhesion. However, the preparation processes depending on the chemical properties of the substrate and the poor stability of the lubricant layer hinder the practical applications. In this work, a facile method to fabricate SLIPSs based on the mussel-inspired polydopamine (PDA)-mediated nanosilica structures is demonstrated. A variety of substrates can be decorated with SLIPSs by successive treatment of PDA-assisted sol-gel process, fluorination, and lubricant filling. The robust uniform and nanotextured silica coating, mediated by the pre-adhered PDA layer, shows enhanced lubricant-locking ability even when subjected to increased evaporation and high shear from flowing water or spinning compared with hierarchical silica rough structures. The obtained SLIPSs exhibit high transparency and excellent resistance against adhesion of liquid/solid contaminants and biofoulings through this pre-adhesion of PDA strategy. The well-defined nanosilica coating of high decoration covering micron-scaled pore walls enables improved durability of the slippery surfaces for antifouling of the porous membrane under pressure-driven filtration and this may be employed as a potential candidate for fouling resistance of porous materials.
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Affiliation(s)
- Rishun Li
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Materials Science and Engineering, Tiangong University, Tianjin 300387, P. R. China
| | - Lizhi Zhao
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Materials Science and Engineering, Tiangong University, Tianjin 300387, P. R. China
| | - Anfeng Yao
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Materials Science and Engineering, Tiangong University, Tianjin 300387, P. R. China
| | - Didi Si
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Materials Science and Engineering, Tiangong University, Tianjin 300387, P. R. China
| | - Yanlong Shang
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Materials Science and Engineering, Tiangong University, Tianjin 300387, P. R. China
| | - Xiaoli Ding
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Materials Science and Engineering, Tiangong University, Tianjin 300387, P. R. China
| | - Huiqin An
- School of Chemistry, Tiangong University, Tianjin 300387, P. R. China
| | - Hui Ye
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Materials Science and Engineering, Tiangong University, Tianjin 300387, P. R. China
| | - Yuzhong Zhang
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Materials Science and Engineering, Tiangong University, Tianjin 300387, P. R. China
| | - Hong Li
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Materials Science and Engineering, Tiangong University, Tianjin 300387, P. R. China
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Ratheesh A, Elias L, Aboobakar Shibli SM. Tuning of Electrode Surface for Enhanced Bacterial Adhesion and Reactions: A Review on Recent Approaches. ACS APPLIED BIO MATERIALS 2021; 4:5809-5838. [PMID: 35006924 DOI: 10.1021/acsabm.1c00362] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
The study of bacterial adhesion and its consequences has great significance in different fields such as marine science, renewable energy sectors, soil and plant ecology, food industry, and the biomedical field. Generally, the adverse effects of microbial surface interactions have attained wide visibility. However, herein, we present distinct approaches to highlight the beneficial aspects of microbial surface interactions for various applications rather than deal with the conventional negative aspects or prevention strategies. The surface microbial reactions can be tuned for useful biochemical or bio-electrochemical applications, which are otherwise unattainable through conventional routes. In this context, the present review is a comprehensive approach to highlight the basic principles and signature parameters that are responsible for the useful microbial-electrode interactions. It also proposes various surface tuning strategies, which are useful for tuning the electrode characteristics particularly suitable for the enhanced bacterial adhesion and reactions. The tuning of surface characteristics of electrodes is discussed with a special reference to the Microbial Fuel Cell as an example.
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Affiliation(s)
- Anjana Ratheesh
- Department of Biotechnology, University of Kerala, Kariavattom Campus, Thiruvananthapuram, Kerala 695 581, India
| | - Liju Elias
- Department of Chemistry, University of Kerala, Kariavattom Campus, Thiruvananthapuram, Kerala 695 581, India
| | - Sheik Muhammadhu Aboobakar Shibli
- Department of Chemistry, University of Kerala, Kariavattom Campus, Thiruvananthapuram, Kerala 695 581, India.,Centre for Renewable Energy and Materials, University of Kerala, Kariavattom Campus, Thiruvananthapuram, Kerala 695 581, India
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Maayan M, Mani KA, Yaakov N, Natan M, Jacobi G, Atkins A, Zelinger E, Fallik E, Banin E, Mechrez G. Fluorine-Free Superhydrophobic Coating with Antibiofilm Properties Based on Pickering Emulsion Templating. ACS APPLIED MATERIALS & INTERFACES 2021; 13:37693-37703. [PMID: 34337945 DOI: 10.1021/acsami.1c10125] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
This study presents antibiofilm coating formulations based on Pickering emulsion templating. The coating contains no bioactive material because its antibiofilm properties stem from passive mechanisms that derive solely from the superhydrophobic nature of the coating. Moreover, unlike most of the superhydrophobic formulations, our system is fluorine-free, thus making the method eminently suitable for food and medical applications. The coating formulation is based on water in toluene or xylene emulsions that are stabilized using commercial hydrophobic silica, with polydimethylsiloxane (PDMS) dissolved in toluene or xylene. The structure of the emulsions and their stability was characterized by confocal microscopy and cryogenic-scanning electron microscopy (cryo-SEM). The most stable emulsions are applied on polypropylene (PP) surfaces and dried in an oven to form PDMS/silica coatings in a process called emulsion templating. The structure of the resulting coatings was investigated by atomic force microscopy (AFM) and SEM. The surface of the coatings shows a honeycomb-like structure that exhibits a combination of micron-scale and nanoscale roughness, which endows it with its superhydrophobic properties. After tuning, the superhydrophobic properties of the coatings demonstrated highly efficient passive antibiofilm activity. In vitro antibiofilm trials with E. coli indicate that the coatings reduced the biofilm accumulation by 83% in the xylene-water-based surfaces and by 59% in the case of toluene-water-based surfaces.
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Affiliation(s)
- Mor Maayan
- Department of Food Sciences, Institute of Postharvest and Food Sciences, Agricultural Research Organization (ARO), Volcani Institute, 68 HaMaccabim Road, Rishon Lezion 7505101, Israel
- Institute of Biochemistry, Food Science and Nutrition, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, POB 12, Rehovot 7610001, Israel
| | - Karthik Ananth Mani
- Department of Food Sciences, Institute of Postharvest and Food Sciences, Agricultural Research Organization (ARO), Volcani Institute, 68 HaMaccabim Road, Rishon Lezion 7505101, Israel
- Institute of Biochemistry, Food Science and Nutrition, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, POB 12, Rehovot 7610001, Israel
| | - Noga Yaakov
- Department of Food Sciences, Institute of Postharvest and Food Sciences, Agricultural Research Organization (ARO), Volcani Institute, 68 HaMaccabim Road, Rishon Lezion 7505101, Israel
| | - Michal Natan
- Mina and Everard Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat Gan 5290002, Israel
- Bar-Ilan Institute for Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, Ramat Gan 5290002, Israel
| | - Gila Jacobi
- Mina and Everard Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat Gan 5290002, Israel
- Bar-Ilan Institute for Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, Ramat Gan 5290002, Israel
| | - Ayelet Atkins
- Mina and Everard Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat Gan 5290002, Israel
- Bar-Ilan Institute for Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, Ramat Gan 5290002, Israel
| | - Einat Zelinger
- Institute of Biochemistry, Food Science and Nutrition, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, POB 12, Rehovot 7610001, Israel
| | - Elazar Fallik
- Department of Postharvest Science, Institute of Postharvest and Food Sciences, Agricultural Research Organization (ARO), Volcani Institute, 68 HaMaccabim Road, Rishon Lezion 7505101, Israel
| | - Ehud Banin
- Mina and Everard Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat Gan 5290002, Israel
- Bar-Ilan Institute for Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, Ramat Gan 5290002, Israel
| | - Guy Mechrez
- Department of Food Sciences, Institute of Postharvest and Food Sciences, Agricultural Research Organization (ARO), Volcani Institute, 68 HaMaccabim Road, Rishon Lezion 7505101, Israel
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Camargo SEA, Xia X, Fares C, Ren F, Hsu SM, Budei D, Aravindraja C, Kesavalu L, Esquivel-Upshaw JF. Nanostructured Surfaces to Promote Osteoblast Proliferation and Minimize Bacterial Adhesion on Titanium. MATERIALS 2021; 14:ma14164357. [PMID: 34442878 PMCID: PMC8398300 DOI: 10.3390/ma14164357] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Revised: 07/23/2021] [Accepted: 07/27/2021] [Indexed: 01/19/2023]
Abstract
The objective of this study was to investigate the potential of titanium nanotubes to promote the proliferation of human osteoblasts and to reduce monomicrobial biofilm adhesion. A secondary objective was to determine the effect of silicon carbide (SiC) on these nanostructured surfaces. Anodized titanium sheets with 100-150 nm nanotubes were either coated or not coated with SiC. After 24 h of osteoblast cultivation on the samples, cells were observed on all titanium sheets by SEM. In addition, the cytotoxicity was evaluated by CellTiter-BlueCell assay after 1, 3, and 7 days. The samples were also cultivated in culture medium with microorganisms incubated anaerobically with respective predominant periodontal bacteria viz. Porphyromonas gingivalis, Treponema denticola, and Tannerella forsythia as monoinfection at 37 °C for 30 days. The biofilm adhesion and coverage were evaluated through surface observation using Scanning Electron Microscopy (SEM). The results demonstrate that Ti nanostructured surfaces induced more cell proliferation after seven days. All groups presented no cytotoxic effects on human osteoblasts. In addition, SEM images illustrate that Ti nanostructured surfaces exhibited lower biofilm coverage compared to the reference samples. These results indicate that Ti nanotubes promoted osteoblasts proliferation and induced cell proliferation on the surface, compared with the controls. Ti nanotubes also reduced biofilm adhesion on titanium implant surfaces.
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Affiliation(s)
- Samira Esteves Afonso Camargo
- Department of Restorative Dental Sciences, Division of Prosthodontics, University of Florida College of Dentistry, Gainesville, FL 32610, USA; (S.E.A.C.); (S.-M.H.)
| | - Xinyi Xia
- Department of Chemical Engineering, Herbert Wertheim College of Engineering, University of Florida, Gainesville, FL 32611, USA; (X.X.); (C.F.); (F.R.)
| | - Chaker Fares
- Department of Chemical Engineering, Herbert Wertheim College of Engineering, University of Florida, Gainesville, FL 32611, USA; (X.X.); (C.F.); (F.R.)
| | - Fan Ren
- Department of Chemical Engineering, Herbert Wertheim College of Engineering, University of Florida, Gainesville, FL 32611, USA; (X.X.); (C.F.); (F.R.)
| | - Shu-Min Hsu
- Department of Restorative Dental Sciences, Division of Prosthodontics, University of Florida College of Dentistry, Gainesville, FL 32610, USA; (S.E.A.C.); (S.-M.H.)
| | | | - Chairmandurai Aravindraja
- Department of Periodontology, College of Dentistry, University of Florida, Gainesville, FL 32611, USA; (C.A.); (L.K.)
| | - Lakshmyya Kesavalu
- Department of Periodontology, College of Dentistry, University of Florida, Gainesville, FL 32611, USA; (C.A.); (L.K.)
| | - Josephine F. Esquivel-Upshaw
- Department of Restorative Dental Sciences, Division of Prosthodontics, University of Florida College of Dentistry, Gainesville, FL 32610, USA; (S.E.A.C.); (S.-M.H.)
- Correspondence: ; Tel.: +1-352-273-6928
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Josyula A, Parikh KS, Pitha I, Ensign LM. Engineering biomaterials to prevent post-operative infection and fibrosis. Drug Deliv Transl Res 2021; 11:1675-1688. [PMID: 33710589 PMCID: PMC8238864 DOI: 10.1007/s13346-021-00955-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/01/2021] [Indexed: 12/19/2022]
Abstract
Implantable biomaterials are essential surgical devices, extending and improving the quality of life of millions of people globally. Advances in materials science, manufacturing, and in our understanding of the biological response to medical device implantation over several decades have resulted in improved safety and functionality of biomaterials. However, post-operative infection and immune responses remain significant challenges that interfere with biomaterial functionality and host healing processes. The objectives of this review is to provide an overview of the biology of post-operative infection and the physiological response to implanted biomaterials and to discuss emerging strategies utilizing local drug delivery and surface modification to improve the long-term safety and efficacy of biomaterials.
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Affiliation(s)
- Aditya Josyula
- Center for Nanomedicine at the Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, 21231, USA
- Department of Chemical & Biomolecular Engineering, Johns Hopkins University, Baltimore, MD, 21218, USA
| | - Kunal S Parikh
- Center for Nanomedicine at the Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, 21231, USA
- Department of Ophthalmology, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD, 21218, USA
- Center for Bioengineering Innovation and Design, Johns Hopkins University, Baltimore, MD, 21218, USA
| | - Ian Pitha
- Center for Nanomedicine at the Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, 21231, USA
- Department of Ophthalmology, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA
| | - Laura M Ensign
- Center for Nanomedicine at the Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, 21231, USA.
- Department of Chemical & Biomolecular Engineering, Johns Hopkins University, Baltimore, MD, 21218, USA.
- Department of Ophthalmology, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA.
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD, 21218, USA.
- Department of Pharmacology and Molecular Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA.
- The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins University, Baltimore, MD, 21287, USA.
- Departments Gynecology and Obstetrics, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA.
- Department of Medicine, Division of Infectious Diseases, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA.
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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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Ghimire A, Song J. Anti-Periprosthetic Infection Strategies: From Implant Surface Topographical Engineering to Smart Drug-Releasing Coatings. ACS APPLIED MATERIALS & INTERFACES 2021; 13:20921-20937. [PMID: 33914499 PMCID: PMC8130912 DOI: 10.1021/acsami.1c01389] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Despite advanced implant sterilization and aseptic surgical techniques, periprosthetic bacterial infection remains a major challenge for orthopedic and dental implants. Bacterial colonization/biofilm formation around implants and their invasion into the dense skeletal tissue matrices are difficult to treat and could lead to implant failure and osteomyelitis. These complications require major revision surgeries and extended antibiotic therapies that are associated with high treatment cost, morbidity, and even mortality. Effective preventative measures mitigating risks for implant-related infections are thus in dire need. This review focuses on recent developments of anti-periprosthetic infection strategies aimed at either reducing bacterial adhesion, colonization, and biofilm formation or killing bacteria directly in contact with and/or in the vicinity of implants. These goals are accomplished through antifouling, quorum-sensing interfering, or bactericidal implant surface topographical engineering or surface coatings through chemical modifications. Surface topographical engineering of lotus leaf mimicking super-hydrophobic antifouling features and cicada wing-mimicking, bacterium-piercing nanopillars are both presented. Conventional physical coating/passive release of bactericidal agents is contrasted with their covalent tethering to implant surfaces through either stable linkages or linkages labile to bacterial enzyme cleavage or environmental perturbations. Pros and cons of these emerging anti-periprosthetic infection approaches are discussed in terms of their safety, efficacy, and translational potentials.
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Affiliation(s)
- Ananta Ghimire
- Department of Orthopedics and Physical Rehabilitation, University of Massachusetts Medical School, Worcester, Massachusetts, USA
| | - Jie Song
- Department of Orthopedics and Physical Rehabilitation, University of Massachusetts Medical School, Worcester, Massachusetts, USA
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