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Swedha M, Okla MK, Abdel-Maksoud MA, Balasurya S, Al-Amri SS, Alaraidh IA, Alatar AA, Alsakkaf WAA, Khan SS. Construction of Ag/CdZnS QDs nanocomposite for enhanced visible light photoinactivation of Staphylococcus aureus. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 348:123749. [PMID: 38521393 DOI: 10.1016/j.envpol.2024.123749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 03/07/2024] [Accepted: 03/07/2024] [Indexed: 03/25/2024]
Abstract
With increasing use of antibiotics, the development of antibiotic-resistant pathogens poses a serious threat to human health and the environment. Photocatalytic inactivation of these harmful pathogens is one of the novel and non-antibiotic treatments. The study fabricated Ag NPs decorated CdZnS QDs via a facile and biological co-precipitation method using L. camara plant extract as a green alternative to treat the toxic chemicals. The fabricated Ag/CdZnS QDs (NCs) were prepared for the efficient treatment of antibiotic-resistant pathogens as they raise a major global concern. The fabricated NCs were characterized with various characterization techniques to verify its physicochemical properties. The fabricated NCs have shown excellent photo-sterilization performance of 97 % against S. aureus. The excellent activity was attributed to the decoration of Ag NPs on CdZnS QDs as it helped in shortening band gap, improved visible light absorption ability, increased active sites, and boosted photogenerated electron/hole pairs stability. Radical trapping experiment and ESR analysis indicated the involvement of •OH and h+ in the photoinactivation of bacteria. The photo sterilization reaction of NCs was carried out under different environmental conditions, including light and dark conditions and different pH conditions. The experiment was carried out in sewage-treated water in order to test the real-time application, and the fabricated NCs achieved excellent 95.9 % photo-inactivation of S. aureus cells in sewage treated water and the Chemical Oxygen Demand (COD) of the system was increased after photo inactivation treatment. The fabricated NCs have also shown excellent reusable efficiency of 95% after six runs and the photostability and anti-corrosive nature of NCs were confirmed. The study provides an insight for the employment of photocatalysis for the sterilization of pathogens in real time aquatic environment across the globe.
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Affiliation(s)
- M Swedha
- Nanobiotechnology Laboratory, Department of Biotechnology, Bannari Amman Institute of Technology, Sathyamangalam, Tamil Nadu, India
| | - Mohammad K Okla
- Botany and Microbiology Department, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Mostafa A Abdel-Maksoud
- Botany and Microbiology Department, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - S Balasurya
- Nanobiotechnology Laboratory, Department of Biotechnology, Bannari Amman Institute of Technology, Sathyamangalam, Tamil Nadu, India; Centre Énergie, Matériaux et Télécommunications, INRS, Varennes, Québec, J3X1S2, Canada
| | - Saud S Al-Amri
- Botany and Microbiology Department, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Ibrahim A Alaraidh
- Botany and Microbiology Department, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Abdulrahman A Alatar
- Botany and Microbiology Department, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Waleed A A Alsakkaf
- Botany and Microbiology Department, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - S Sudheer Khan
- Department of Oral Medicine and Radiology, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences (SIMATS), Saveetha University, Chennai, 600077, Tamil Nadu, India.
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Wang H, Xu X, Wang X, Qu W, Qing Y, Li S, Chen B, Ying B, Li R, Qin Y. Performance optimization of biomimetic ant-nest silver nanoparticle coatings for antibacterial and osseointegration of implant surfaces. BIOMATERIALS ADVANCES 2023; 149:213394. [PMID: 37001309 DOI: 10.1016/j.bioadv.2023.213394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 01/27/2023] [Accepted: 03/15/2023] [Indexed: 05/02/2023]
Abstract
Infection prevention and bone-implant integration remain major clinical challenges. Silver nanoparticle (AgNPs) bone-implant coatings have received extensive attention. Balancing the toxicity and antibacterial properties of AgNP coatings has become a significant problem. In this study, inspired by the structure of the ant-nest, a polyetherimide (PEI) coating with ant-nest structure was prepared, aiming to realize the structural modification of the AgNPs coating. AgNPs were loaded in the inner porous area of the PEI ant-nest coating, avoiding direct contact between AgNPs and cells. The nanopores on the surface of the coating ensured the orderly release of silver ions. SEM, FTIR, XPS, and XRD experiments confirmed that the PEI ant-nest coating was successfully prepared. Interestingly, in the PEI ant-nest coating, Ag+ showed a steady increase in the release trend within 28 days, and there was no early burst release phenomenon. In -vivo experiments showed a good control effect for local infection. In order to improve the osteogenic properties of the materials, 45S5 bioactive glasses (BG) were loaded to achieve further osseointegration. In general, this natural ant-nest-inspired surface modification coating for orthopedic prostheses provides a new strategy for balancing the antibacterial and toxic effects of AgNP coatings.
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Affiliation(s)
- Hao Wang
- Department of Orthopaedics, The Second Hospital of Jilin University, Jilin University, Changchun 130041, China
| | - Xinyu Xu
- Department of Orthopaedics, The Second Hospital of Jilin University, Jilin University, Changchun 130041, China
| | - Xingyue Wang
- Department of Orthopaedics, The Second Hospital of Jilin University, Jilin University, Changchun 130041, China
| | - Wenrui Qu
- Department of Orthopaedics, The Second Hospital of Jilin University, Jilin University, Changchun 130041, China
| | - Yunan Qing
- Department of Orthopaedics, The Second Hospital of Jilin University, Jilin University, Changchun 130041, China
| | - Shihuai Li
- Department of Orthopaedics, The Second Hospital of Jilin University, Jilin University, Changchun 130041, China
| | - Bo Chen
- Department of Orthopaedics, The Second Hospital of Jilin University, Jilin University, Changchun 130041, China
| | - Boda Ying
- Department of Orthopaedics, The Second Hospital of Jilin University, Jilin University, Changchun 130041, China
| | - Ruiyan Li
- Department of Orthopaedics, The Second Hospital of Jilin University, Jilin University, Changchun 130041, China.
| | - Yanguo Qin
- Department of Orthopaedics, The Second Hospital of Jilin University, Jilin University, Changchun 130041, China.
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Soltani-Kordshuli F, Choudhury D, Goss JA, Campbell M, Smith E, Sonntag S, Niyonshuti II, Okyere D, Smeltzer MS, Chen J, Zou M. Cartilage-inspired surface textures for improved tribological performance of orthopedic implants. J Mech Behav Biomed Mater 2023; 138:105572. [PMID: 36435033 DOI: 10.1016/j.jmbbm.2022.105572] [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: 06/28/2022] [Revised: 08/16/2022] [Accepted: 11/14/2022] [Indexed: 11/18/2022]
Abstract
Joint replacements have become one of the most common orthopedic procedures due to the significant demands of retaining functional mobility. While these procedures are of great value to patients, there are some limitations. Durability is the most important limitation associated with joint replacement that needs to be addressed due to the increasing number of younger patients. Titanium is a commonly used implant material which has high biocompatibility, high strength-to-density ratio, and high corrosion resistance. However, current titanium implants have poor wear resistance which shortens their lifespan. In this study, microscale dimples with four different dimple shapes (circular, triangular, square, and star) of similar sizes to the pores found in natural articular cartilage were fabricated on titanium disks to improve implant lubrication and reduce wear. Biotribology tests were performed on dimpled and non-dimpled titanium disks in a condition similar to that inside of a patient's body. It was shown that dimpling the titanium disks optimized the lubricant film formation and decreased the wear rate significantly while also reducing the coefficient of friction (COF). The star-shaped dimples had the lowest COF and almost no detectable wear after 8 h of testing. To investigate whether dimpling increased bacterial colonization due to increased surface area, and to determine whether any increase could be limited by coating with antibacterial materials, bacterial colonization with Staphylococcus aureus was tested with non-dimpled and star-shaped dimpled titanium disks with and without coating with polydopamine (PDA), silver (Ag) nanoparticles (NPs), and PDA + Ag NPs. It was found that dimpling did not increase bacterial colonization, and that coating with PDA, Ag NPs, or PDA + Ag NPs did not decrease bacterial colonization. Nevertheless, we conclude that star-shaped dimpled titanium surfaces have potential utility as more durable orthopedic implants.
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Affiliation(s)
- Firuze Soltani-Kordshuli
- Department of Mechanical Engineering, University of Arkansas, Fayetteville, AR, 72701, USA; Center for Advanced Surface Engineering, University of Arkansas, Fayetteville, AR, 72701, USA
| | - Dipankar Choudhury
- Department of Mechanical Engineering, University of Arkansas, Fayetteville, AR, 72701, USA; Center for Advanced Surface Engineering, University of Arkansas, Fayetteville, AR, 72701, USA
| | - Josue A Goss
- Department of Mechanical Engineering, University of Arkansas, Fayetteville, AR, 72701, USA; Center for Advanced Surface Engineering, University of Arkansas, Fayetteville, AR, 72701, USA
| | - Mara Campbell
- Department of Microbiology & Immunology, University of Arkansas for Medical Sciences, Little Rock, AR, 72205, USA
| | - Evelyn Smith
- Department of Computer Science and Engineering, University of Arkansas, Fayetteville, AR, 72701, USA
| | - Steven Sonntag
- Department of Mechanical Engineering, University of Arkansas, Fayetteville, AR, 72701, USA; Center for Advanced Surface Engineering, University of Arkansas, Fayetteville, AR, 72701, USA
| | - Isabelle I Niyonshuti
- Center for Advanced Surface Engineering, University of Arkansas, Fayetteville, AR, 72701, USA; Department of Chemistry and Biochemistry, University of Arkansas, Fayetteville, AR, 72701, USA
| | - Deborah Okyere
- Center for Advanced Surface Engineering, University of Arkansas, Fayetteville, AR, 72701, USA; Materials Science and Engineering Program, University of Arkansas, Fayetteville, AR, 72701, USA
| | - Mark S Smeltzer
- Department of Microbiology & Immunology, University of Arkansas for Medical Sciences, Little Rock, AR, 72205, USA; Department of Orthopaedic Surgery, University of Arkansas for Medical Sciences, Little Rock, AR, 72205, USA
| | - Jingyi Chen
- Center for Advanced Surface Engineering, University of Arkansas, Fayetteville, AR, 72701, USA; Department of Chemistry and Biochemistry, University of Arkansas, Fayetteville, AR, 72701, USA
| | - Min Zou
- Department of Mechanical Engineering, University of Arkansas, Fayetteville, AR, 72701, USA; Center for Advanced Surface Engineering, University of Arkansas, Fayetteville, AR, 72701, USA.
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Antibacterial Ti-Cu implants: A critical review on mechanisms of action. Mater Today Bio 2022; 17:100447. [PMID: 36278144 PMCID: PMC9579810 DOI: 10.1016/j.mtbio.2022.100447] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 09/28/2022] [Accepted: 09/29/2022] [Indexed: 11/06/2022] Open
Abstract
Titanium (Ti) has been widely used for manufacturing of bone implants because of its mechanical properties, biological compatibility, and favorable corrosion resistance in biological environments. However, Ti implants are prone to infection (peri-implantitis) by bacteria which in extreme cases necessitate painful and costly revision surgeries. An emerging, viable solution for this problem is to use copper (Cu) as an antibacterial agent in the alloying system of Ti. The addition of copper provides excellent antibacterial activities, but the underpinning mechanisms are still obscure. This review sheds light on such mechanisms and reviews how incorporation of Cu can render Ti–Cu implants with antibacterial activity. The review first discusses the fundamentals of interactions between bacteria and implanted surfaces followed by an overview of the most common engineering strategies utilized to endow an implant with antibacterial activity. The underlying mechanisms for antibacterial activity of Ti–Cu implants are then discussed in detail. Special attention is paid to contact killing mechanisms because the misinterpretation of this mechanism is the root of discrepancies in the literature.
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Du P, Xu Y, Shi Y, Xu Q, Li S, Gao M. Preparation and shape change of silver nanoparticles (AgNPs) loaded on the dialdehyde cellulose by in-situ synthesis method. CELLULOSE (LONDON, ENGLAND) 2022; 29:6831-6843. [PMID: 35789831 PMCID: PMC9244189 DOI: 10.1007/s10570-022-04692-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Accepted: 06/08/2022] [Indexed: 06/01/2023]
Abstract
UNLABELLED With the improvement of medical and health care level in our society, the demand for antibacterial materials is increasing. In this work, we prepared the antibacterial materials by loading silver nanoparticles (AgNPs) on the dialdehyde cellulose (DAC) with in-situ synthesis method. DAC was prepared by pretreating cellulose fiber with sodium metaperiodate (NaIO4) to convert the hydroxyl group into aldehyde group, and then reacted with silver nitrate (AgNO3) to obtain AgNPs loaded on DAC. UV-Vis results show that the characteristic absorption peak of AgNPs at 428 nm appeared in the AgNPs-loaded-DAC. It was observed by SEM that the spherical AgNPs were distributed uniformly on the DAC surface without obvious flocculation. The color of DAC was not changed significantly, indicating that a small amount of AgNPs was loaded. In addition, sodium citrate (Na3C6H5O7) was added in the reaction of DAC and AgNO3 and its effect on the formation of AgNPs was studied. The results demonstrated that the color of DAC turned deeper and finally dark yellow with reaction time extended. When the reaction time was 60 h, the spherical AgNPs were gradually grown and transformed into triangular prism on the DAC surface. The antibacterial properties of AgNPs showed inhibition zones of 4.90 mm and 7.35 mm (60 h) against Gram-negative (E. coli) and Gram-positive (S. aureus), respectively, which increased by 40.00% and 14.85% compared with spherical AgNPs (2.5 h) obtained without Na3C6H5O7. The research of AgNPs-loaded cellulose-based materials promotes the development prospect of new nano-antibacterial materials. SUPPLEMENTARY INFORMATION The online version contains supplementary material available at 10.1007/s10570-022-04692-6.
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Affiliation(s)
- Peng Du
- College of Bioresources Chemical and Materials Engineering, Shaanxi Province Key Laboratory of Papermaking Technology and Specialty Paper, National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi University of Science and Technology, Xi’an, 710021 China
| | - Yongjian Xu
- College of Bioresources Chemical and Materials Engineering, Shaanxi Province Key Laboratory of Papermaking Technology and Specialty Paper, National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi University of Science and Technology, Xi’an, 710021 China
| | - Yun Shi
- College of Bioresources Chemical and Materials Engineering, Shaanxi Province Key Laboratory of Papermaking Technology and Specialty Paper, National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi University of Science and Technology, Xi’an, 710021 China
| | - Qinghua Xu
- State Key Laboratory of Biobased Material and Green Papermaking Qilu University of Technology, Shandong Academy of Sciences, Jinan, 250353 China
| | - Shasha Li
- College of Bioresources Chemical and Materials Engineering, Shaanxi Province Key Laboratory of Papermaking Technology and Specialty Paper, National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi University of Science and Technology, Xi’an, 710021 China
| | - Minlan Gao
- College of Bioresources Chemical and Materials Engineering, Shaanxi Province Key Laboratory of Papermaking Technology and Specialty Paper, National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi University of Science and Technology, Xi’an, 710021 China
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Yang L, Li L, Li H, Wang T, Ren X, Cheng Y, Li Y, Huang Q. Layer-by-Layer Assembled Smart Antibacterial Coatings via Mussel-Inspired Polymerization and Dynamic Covalent Chemistry. Adv Healthc Mater 2022; 11:e2200112. [PMID: 35182462 DOI: 10.1002/adhm.202200112] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Indexed: 12/14/2022]
Abstract
Bacterial colonization on the surface of medical implanted devices and bacterial infection-induced biofilm have been a lethal risk for patients of clinical treatment. While antibacterial coatings fabricated by layer-by-layer (LBL) assembly techniques have been well explored, the facile preparation of substrate-independent smart antibacterial coatings with on-demand antibiotics release profile and excellent antibacterial performance is still urgently needed. In this work, this goal is addressed by LBL assembly fabrication of robust antibacterial coatings using naturally occurring and commercially available building blocks (i.e., aminoglycosides, 5,6-dihydroxyindole, and formylphenylboronic acid) via the subsequentially performed mussel-inspired polymerization and dynamic covalent chemistries. The resulting antibacterial coatings on different substates all presente a dynamic feature (i.e., pH-responsive), on-demand antibiotics release properties, and highly effective antibacterial performance both in vitro and in vivo. It is envisioned that this work can expand the scope of LBL assembly technique toward the next generation of robust and universal antibacterial coating materials by using natural building blocks and readily available chemistries.
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Affiliation(s)
- Lei Yang
- College of Polymer Science and Engineering State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu 610065 China
| | - Lin Li
- Department of Orthopedics Oncology Changzheng Hospital the Navy Medical University Shanghai 200003 China
| | - Haotian Li
- College of Polymer Science and Engineering State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu 610065 China
| | - Tianyou Wang
- College of Polymer Science and Engineering State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu 610065 China
| | - Xiancheng Ren
- College of Polymer Science and Engineering State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu 610065 China
| | - Yiyun Cheng
- Shanghai Key Laboratory of Regulatory Biology School of Life Sciences East China Normal University Shanghai 200241 China
| | - Yiwen Li
- College of Polymer Science and Engineering State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu 610065 China
| | - Quan Huang
- Department of Orthopedics Oncology Changzheng Hospital the Navy Medical University Shanghai 200003 China
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Akdoğan E, Şirin HT. Plasma surface modification strategies for the preparation of antibacterial biomaterials: A review of the recent literature. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 131:112474. [PMID: 34857260 DOI: 10.1016/j.msec.2021.112474] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 09/03/2021] [Accepted: 10/01/2021] [Indexed: 12/16/2022]
Abstract
Plasma-based strategies offer several advantages for developing antibacterial biomaterials and can be used directly or combined with other surface modification techniques. Direct plasma strategies can be classified as plasma surface modifications that derive antibacterial property by tailoring surface topography or surface chemistry. Nano patterns induced by plasma modification can exhibit antibacterial property and promote the adhesion and proliferation of mammalian cells, creating antibacterial and biocompatible surfaces. Antibacterial effect by tailoring surface chemistry via plasma can be attained by either creating bacteriostatic surfaces or bactericidal surfaces. Plasma-assisted strategies incorporate plasma processes in combination with other surface modification techniques. Plasma coating can serve as a drug-eluting reservoir and diffusion barrier. The plasma-functionalized surface can serve as a platform for grafting antibacterial agents, and plasma surface activation can improve the adhesion of polymeric layers with antibacterial properties. This article critically reviews plasma-based strategies reported in the recent literature for the development of antibacterial biomaterial surfaces. Studies using both atmospheric and low-pressure plasmas are included in this review. The findings are discussed in terms of the trends in material and precursor selection, modification stability, antibacterial efficacy, the choice of bacterial strains tested, cell culture findings, critical aspects of in vitro performance testing and in vivo experimental design.
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Affiliation(s)
- Ebru Akdoğan
- Department of Chemistry, Ankara Hacı Bayram Veli University, 06900 Ankara, Turkey.
| | - Hasret Tolga Şirin
- Department of Chemistry, Ankara Hacı Bayram Veli University, 06900 Ankara, Turkey
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8
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Decontamination-Induced Modification of Bioactivity in Essential Oil-Based Plasma Polymer Coatings. Molecules 2021; 26:molecules26237133. [PMID: 34885713 PMCID: PMC8659139 DOI: 10.3390/molecules26237133] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Revised: 11/10/2021] [Accepted: 11/11/2021] [Indexed: 01/19/2023] Open
Abstract
Plasma polymer coatings fabricated from Melaleuca alternifolia essential oil and its derivatives have been previously shown to reduce the extent of microbial adhesion on titanium, polymers, and other implantable materials used in dentistry. Previous studies have shown these coatings to maintain their performance under standard operating conditions; however, when used in e.g., a dental implant, these coatings may inadvertently become subject to in situ cleaning treatments, such as those using an atmospheric pressure plasma jet, a promising tool for the effective in situ removal of biofilms from tissues and implant surfaces. Here, we investigated the effect of such an exposure on the antimicrobial performance of the Melaleuca alternifolia polymer coating. It was found that direct exposure of the polymer coating surface to the jet for periods less than 60 s was sufficient to induce changes in its surface chemistry and topography, affecting its ability to retard subsequent microbial attachment. The exact effect of the jet exposure depended on the chemistry of the polymer coating, the length of plasma treatment, cell type, and incubation conditions. The change in the antimicrobial activity for polymer coatings fabricated at powers of 20–30 W was not statistically significant due to their limited baseline bioactivity. Interestingly, the bioactivity of polymer coatings fabricated at 10 and 15 W against Staphylococcus aureus cells was temporarily improved after the treatment, which could be attributed to the generation of loosely attached bioactive fragments on the treated surface, resulting in an increase in the dose of the bioactive agents being eluted by the surface. Attachment and proliferation of Pseudomonas aeruginosa cells and mixed cultures were less affected by changes in the bioactivity profile of the surface. The sensitivity of the cells to the change imparted by the jet treatment was also found to be dependent on their origin culture, with mature biofilm-derived P. aeruginosa bacterial cells showing a greater ability to colonize the surface when compared to its planktonic broth-grown counterpart. The presence of plasma-generated reactive oxygen and nitrogen species in the culture media was also found to enhance the bioactivity of polymer coatings fabricated at power levels of 10 and 15 W, due to a synergistic effect arising from simultaneous exposure of cells to reactive oxygen and nitrogen species (RONS) and eluted bioactive fragments. These results suggest that it is important to consider the possible implications of inadvertent changes in the properties and performance of plasma polymer coatings as a result of exposure to in situ decontamination, to both prevent suboptimal performance and to exploit possible synergies that may arise for some polymer coating-surface treatment combinations.
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9
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Chakraborty A, Jasieniak M, Coad BR, Griesser HJ. Candida albicans Can Survive Antifungal Surface Coatings on Surfaces with Microcone Topography. ACS APPLIED BIO MATERIALS 2021; 4:7769-7778. [PMID: 35006760 DOI: 10.1021/acsabm.1c00307] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
This study demonstrates the ability of Candida albicans, a medically significant human fungal pathogen, to minimize contact with an antifungal surface coating that on a flat surface is lethal on contact by growing on and between micron-sized surface topographical features, thus minimizing the contact area. Scanning electron microscopy showed that cells contacting the "floor" between microcones were killed, whereas cells attached to microcones survived and formed hyphal filaments. These spanned space between cones and avoided contact with the flat surface in-between cones. Thus, fungal cells managed to attach and grow despite the antifungal coating. This ability of Candida albicans to exploit topography features to minimize surface contact yet utilize the solid surface for anchoring reduces the effectiveness of the grafted antifungal surface coating. This suggests that biomedical devices with rough surfaces might be more challenging to protect against fungal biofilm formation via application of an antifungal coating.
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Affiliation(s)
- Argha Chakraborty
- Future Industries Institute, University of South Australia, Mawson Lakes, South Australia 5095, Australia.,Cooperative Research Centre for Cell Therapy Manufacturing, Adelaide, South Australia 5000, Australia
| | - Marek Jasieniak
- Future Industries Institute, University of South Australia, Mawson Lakes, South Australia 5095, Australia.,Cooperative Research Centre for Cell Therapy Manufacturing, Adelaide, South Australia 5000, Australia
| | - Bryan R Coad
- Future Industries Institute, University of South Australia, Mawson Lakes, South Australia 5095, Australia.,School of Agriculture, Food and Wine, University of Adelaide, Urrbrae, South Australia 5064, Australia
| | - Hans J Griesser
- Future Industries Institute, University of South Australia, Mawson Lakes, South Australia 5095, Australia.,Cooperative Research Centre for Cell Therapy Manufacturing, Adelaide, South Australia 5000, Australia
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10
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Daghian SG, Farahpour MR, Jafarirad S. Biological fabrication and electrostatic attractions of new layered silver/talc nanocomposite using Lawsonia inermis L. and its chitosan-capped inorganic/organic hybrid: Investigation on acceleration of Staphylococcus aureus and Pseudomonas aeruginosa infected wound healing. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 128:112294. [PMID: 34474845 DOI: 10.1016/j.msec.2021.112294] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Revised: 06/27/2021] [Accepted: 06/28/2021] [Indexed: 02/01/2023]
Abstract
In the present study, new-layered inorganic/organic hybrid of silver/talc nanocomposites (Ag/Tlc-NPs) and its chitosan-capped derivative (Ag/Tlc/Csn NCs) were biochemically synthesized utilizing Lawsonia inermis L. extract. The silver nanoparticles (Ag NPs) were synthesized employing green method on the exterior surface layer of talc mineral as a solid substrate. The negatively charged surface layer of talc might function as templates and can attract the chitosan cations from a solution to yield a layered hybrid structure, whose inorganic phase is formed by Si-O-Ag bonds. Our results revealed that Ag NPs were formed on the exterior surface of talc with a diameter with size of 124-215 nm. In addition, cytotoxicity, in vitro antibacterial activity, and clinical effects of wound-healing ointments containing talc were investigated. The results implied the successful synthesis of Ag/Tlc/Csn NCs using the extract. The structures were safe up to 0.50 mg/mL. In vitro studies confirmed antioxidant and antibacterial properties of Ag/Tlc/Csn NCs. In sum, our findings showed that the ointments improve wound healing process by inducing an anti-inflammatory M2 phenotype and bFGF, CD206, collagen1A, and IL-10 production that causes fibroblast migration and wound closure through influencing M2 macrophage. Ag/Tlc/Csn is suggested to be taken into consideration as a medical combination for improving infected wound healing and as a promising agent for clinical administration.
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Affiliation(s)
- Sajjad Ghanbarzadeh Daghian
- Department of Clinical Sciences, Faculty of Veterinary Medicine, Urmia Branch, Islamic Azad University, Urmia, Iran
| | - Mohammad Reza Farahpour
- Department of Clinical Sciences, Faculty of Veterinary Medicine, Urmia Branch, Islamic Azad University, Urmia, Iran.
| | - Saeed Jafarirad
- Department of organic and biochemistry, Faculty of chemistry, University of Tabriz, Tabriz, Iran; Research center of bioscience and biotechnology, University of Tabriz, Tabriz, Iran
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11
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Cao H, Qin H, Li Y, Jandt KD. The Action-Networks of Nanosilver: Bridging the Gap between Material and Biology. Adv Healthc Mater 2021; 10:e2100619. [PMID: 34309242 DOI: 10.1002/adhm.202100619] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 06/03/2021] [Indexed: 01/06/2023]
Abstract
The emergence of nanosilver (silver in nanoscale shapes and their assemblies) benefits the landscape of modern healthcare; however, this brings about concerns over its safety issues associated with an ultrasmall size and high mobility. By reviewing previous reporting details about the synthesis and characterization of nanosilver and its biological responses, a gap between materials synthesis and their biomedical uses is characterized by the insufficient understanding of the interacting and interplaying nanoscale actions of silver. To improve reporting quality and advance clinical translations, it is suggested that researchers have a comprehensive recognition of the "Indications for use" before designing innovative nanosilver-based materials and an "Action-network" concept addressing the acting range and strength of those nanoscale actions is implemented. Although this discussion is specific to nanosilver, the idea of "Indications for use" centered design and synthesis is generally applicable to other biomedical nanomaterials.
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Affiliation(s)
- Huiliang Cao
- Lab of Low‐Dimensional Materials Chemistry Key Laboratory for Ultrafine Materials of Ministry of Education East China University of Science and Technology Shanghai 200237 China
- Shanghai Engineering Research Center of Hierarchical Nanomaterials School of Materials Science and Engineering East China University of Science and Technology Shanghai 200237 China
- Chair of Materials Science Otto Schott Institute of Materials Research Friedrich Schiller University Jena Jena 07743 Germany
| | - Hui Qin
- Department of Orthopaedics Shanghai Jiaotong University Affiliated Sixth People's Hospital Shanghai 200233 China
| | - Yongsheng Li
- Lab of Low‐Dimensional Materials Chemistry Key Laboratory for Ultrafine Materials of Ministry of Education East China University of Science and Technology Shanghai 200237 China
- Shanghai Engineering Research Center of Hierarchical Nanomaterials School of Materials Science and Engineering East China University of Science and Technology Shanghai 200237 China
| | - Klaus D. Jandt
- Chair of Materials Science Otto Schott Institute of Materials Research Friedrich Schiller University Jena Jena 07743 Germany
- Jena Center for Soft Matter (JCSM) Friedrich Schiller University Jena Jena 07743 Germany
- Jena School for Microbial Communication (JSMC) Neugasse 23 Jena 07743 Germany
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12
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Silver nanoparticles prepared by solid-state redox route from HEC for conductive, long-term durable and recycling artificial soft electronics. POLYMER 2021. [DOI: 10.1016/j.polymer.2021.123974] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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13
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Misra N, Bhatt S, Arefi‐Khonsari F, Kumar V. State of the art in nonthermal plasma processing for biomedical applications: Can it help fight viral pandemics like COVID-19? PLASMA PROCESSES AND POLYMERS (PRINT) 2021; 18:2000215. [PMID: 34220401 PMCID: PMC8237024 DOI: 10.1002/ppap.202000215] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 03/07/2021] [Accepted: 05/03/2021] [Indexed: 06/13/2023]
Abstract
Plasma processing finds widespread biomedical applications, such as the design of biosensors, antibiofouling surfaces, controlled drug delivery systems, and in plasma sterilizers. In the present coronavirus disease (COVID-19) situation, the prospect of applying plasma processes like surface activation, plasma grafting, plasma-enhanced chemical vapor deposition/plasma polymerization, surface etching, plasma immersion ion implantation, crosslinking, and plasma decontamination to provide timely solutions in the form of better antiviral alternatives, practical diagnostic tools, and reusable personal protective equipment is worth exploring. Herein, the role of nonthermal plasmas and their contributions toward healthcare are timely reviewed to engage different communities in assisting healthcare associates and clinicians, not only to combat the current COVID-19 pandemic but also to prevent similar kinds of future outbreaks.
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Affiliation(s)
- Nilanjal Misra
- Radiation Technology Development DivisionBhabha Atomic Research CentreTrombayMumbaiMaharashtraIndia
| | - Sudhir Bhatt
- Department of Engineering and Physical SciencesInstitute of Advanced ResearchGandhinagarGujaratIndia
| | | | - Virendra Kumar
- Radiation Technology Development DivisionBhabha Atomic Research CentreTrombayMumbaiMaharashtraIndia
- Department of Chemical SciencesHomi Bhabha National InstituteAnushaktinagarMumbaiMaharashtraIndia
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14
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Velazco-Medel MA, Camacho-Cruz LA, Magaña H, Palomino K, Bucio E. Simultaneous Grafting Polymerization of Acrylic Acid and Silver Aggregates Formation by Direct Reduction Using γ Radiation onto Silicone Surface and Their Antimicrobial Activity and Biocompatibility. Molecules 2021; 26:2859. [PMID: 34065879 PMCID: PMC8151000 DOI: 10.3390/molecules26102859] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 05/07/2021] [Accepted: 05/09/2021] [Indexed: 01/05/2023] Open
Abstract
The modification of medical devices is an area that has attracted a lot of attention in recent years; particularly, those developments which search to modify existing devices to render them antimicrobial. Most of these modifications involve at least two stages (modification of the base material with a polymer graft and immobilization of an antimicrobial agent) which are both time-consuming and complicate synthetic procedures; therefore, as an improvement, this project sought to produce antimicrobial silicone (PDMS) in a single step. Using gamma radiation as both an energy source for polymerization initiation and as a source of reducing agents in solution, PDMS was simultaneously grafted with acrylic acid and ethylene glycol dimethacrylate (AAc:EGDMA) while producing antimicrobial silver nanoparticles (AgNPs) onto the surface of the material. To obtain reproducible materials, experimental variables such as the effect of the dose, the intensity of radiation, and the concentration of the silver salt were evaluated, finding the optimal reaction conditions to obtain materials with valuable properties. The characterization of the material was performed using electronic microscopy and spectroscopic techniques such as 13C-CPMAS-SS-NMR and FTIR. Finally, these materials demonstrated good antimicrobial activity against S. aureus while retaining good cell viabilities (above 90%) for fibroblasts BALB/3T3.
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Affiliation(s)
- Marlene A. Velazco-Medel
- Departamento de Química de Radiaciones y Radioquímica, Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad 7 Universitaria, Ciudad de México 04510, Mexico;
| | - Luis A. Camacho-Cruz
- Departamento de Química de Radiaciones y Radioquímica, Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad 7 Universitaria, Ciudad de México 04510, Mexico;
| | - Héctor Magaña
- Faculty of Chemical Sciences and Engineering, Autonomous University of Baja California, University Boulevard No. 14418, Otay Mesa, Tijuana 22390, Mexico; (H.M.); (K.P.)
| | - Kenia Palomino
- Faculty of Chemical Sciences and Engineering, Autonomous University of Baja California, University Boulevard No. 14418, Otay Mesa, Tijuana 22390, Mexico; (H.M.); (K.P.)
| | - Emilio Bucio
- Departamento de Química de Radiaciones y Radioquímica, Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad 7 Universitaria, Ciudad de México 04510, Mexico;
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15
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Amin Yavari S, Castenmiller SM, van Strijp JAG, Croes M. Combating Implant Infections: Shifting Focus from Bacteria to Host. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e2002962. [PMID: 32914481 DOI: 10.1002/adma.202002962] [Citation(s) in RCA: 76] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Revised: 06/28/2020] [Indexed: 05/06/2023]
Abstract
The widespread use of biomaterials to support or replace body parts is increasingly threatened by the risk of implant-associated infections. In the quest for finding novel anti-infective biomaterials, there generally has been a one-sided focus on biomaterials with direct antibacterial properties, which leads to excessive use of antibacterial agents, compromised host responses, and unpredictable effectiveness in vivo. This review sheds light on how host immunomodulation, rather than only targeting bacteria, can endow biomaterials with improved anti-infective properties. How antibacterial surface treatments are at risk to be undermined by biomaterial features that dysregulate the protection normally provided by critical immune cell subsets, namely, neutrophils and macrophages, is discussed. Accordingly, how the precise modification of biomaterial surface biophysical cues, or the incorporation of immunomodulatory drug delivery systems, can render biomaterials with the necessary immune-compatible and immune-protective properties to potentiate the host defense mechanisms is reviewed. Within this context, the protective role of host defense peptides, metallic particles, quorum sensing inhibitors, and therapeutic adjuvants is discussed. The highlighted immunomodulatory strategies may lay a foundation to develop anti-infective biomaterials, while mitigating the increasing threat of antibacterial drug resistance.
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Affiliation(s)
- Saber Amin Yavari
- Department of Orthopedics, University Medical Center Utrecht, Utrecht, 3508GA, The Netherlands
| | - Suzanne M Castenmiller
- Department of Medical Microbiology, University Medical Center Utrecht, Utrecht, 3508GA, The Netherlands
| | - Jos A G van Strijp
- Department of Medical Microbiology, University Medical Center Utrecht, Utrecht, 3508GA, The Netherlands
| | - Michiel Croes
- Department of Orthopedics, University Medical Center Utrecht, Utrecht, 3508GA, The Netherlands
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16
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Jahanmard F, Dijkmans FM, Majed A, Vogely HC, van der Wal BCH, Stapels DAC, Ahmadi SM, Vermonden T, Amin Yavari S. Toward Antibacterial Coatings for Personalized Implants. ACS Biomater Sci Eng 2020; 6:5486-5492. [PMID: 33320546 DOI: 10.1021/acsbiomaterials.0c00683] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The complex reconstructive surgeries for which patient-specific orthopedic, maxillofacial, or dental implants are used often necessitate wounds that are open for a considerable amount of time. Unsurprisingly, this allows bacteria to establish implant-associated infection, despite the scrupulous sterilization efforts made during surgery. Here, we developed a prophylactic bactericidal coating via electrophoretic deposition technology for two 3D-printed porous titanium implant designs. The surface characteristics, antibiotic release behavior, antibacterial properties, and impact on osteoblast cell proliferation of the optimized coatings were investigated. The results unequivocally confirmed the biofunctionality of the implants in vitro. This study reveals a new avenue for future antibacterial patient-specific implants.
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Affiliation(s)
- F Jahanmard
- Department of Orthopedics, University Medical Center Utrecht, Utrecht 3584 CX, The Netherlands
| | - F M Dijkmans
- Department of Orthopedics, University Medical Center Utrecht, Utrecht 3584 CX, The Netherlands
| | - A Majed
- Department of Orthopedics, University Medical Center Utrecht, Utrecht 3584 CX, The Netherlands
| | - H C Vogely
- Department of Orthopedics, University Medical Center Utrecht, Utrecht 3584 CX, The Netherlands
| | - B C H van der Wal
- Department of Orthopedics, University Medical Center Utrecht, Utrecht 3584 CX, The Netherlands
| | - D A C Stapels
- Department of Medical Microbiology, University Medical Center Utrecht, Utrecht 3584 CX, The Netherlands
| | - S M Ahmadi
- Amber Implants B.V., Delft 2629 JD, The Netherlands
| | - T Vermonden
- Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences (UIPS), Utrecht University, Utrecht 3584 CS, The Netherlands
| | - S Amin Yavari
- Department of Orthopedics, University Medical Center Utrecht, Utrecht 3584 CX, The Netherlands
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17
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A multifaceted biomimetic interface to improve the longevity of orthopedic implants. Acta Biomater 2020; 110:266-279. [PMID: 32344174 DOI: 10.1016/j.actbio.2020.04.020] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 03/23/2020] [Accepted: 04/09/2020] [Indexed: 01/22/2023]
Abstract
The rise of additive manufacturing has provided a paradigm shift in the fabrication of precise, patient-specific implants that replicate the physical properties of native bone. However, eliciting an optimal biological response from such materials for rapid bone integration remains a challenge. Here we propose for the first time a one-step ion-assisted plasma polymerization process to create bio-functional 3D printed titanium (Ti) implants that offer rapid bone integration. Using selective laser melting, porous Ti implants with enhanced bone-mimicking mechanical properties were fabricated. The implants were functionalized uniformly with a highly reactive, radical-rich polymeric coating generated using a unique combination of plasma polymerization and plasma immersion ion implantation. We demonstrated the performance of such activated Ti implants with a focus on the coating's homogeneity, stability, and biological functionality. It was shown that the optimized coating was highly robust and possessed superb physico-chemical stability in a corrosive physiological solution. The plasma activated coating was cytocompatible and non-immunogenic; and through its high reactivity, it allowed for easy, one-step covalent immobilization of functional biomolecules in the absence of solvents or chemicals. The activated Ti implants bio-functionalized with bone morphogenetic protein 2 (BMP-2) showed a reduced protein desorption and a more sustained osteoblast response both in vitro and in vivo compared to implants modified through conventional physisorption of BMP-2. The versatile new approach presented here will enable the development of bio-functionalized additively manufactured implants that are patient-specific and offer improved integration with host tissue. STATEMENT OF SIGNIFICANCE: Additive manufacturing has revolutionized the fabrication of patient-specific orthopedic implants. Although such 3D printed implants can show desirable mechanical and mass transport properties, they often require surface bio-functionalities to enable control over the biological response. Surface covalent immobilization of bioactive molecules is a viable approach to achieve this. Here we report the development of additively manufactured titanium implants that precisely replicate the physical properties of native bone and are bio-functionalized in a simple, reagent-free step. Our results show that covalent attachment of bone-related growth factors through ion-assisted plasma polymerized interlayers circumvents their desorption in physiological solution and significantly improves the bone induction by the implants both in vitro and in vivo.
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18
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Jahanmard F, Croes M, Castilho M, Majed A, Steenbergen MJ, Lietaert K, Vogely HC, van der Wal BCH, Stapels DAC, Malda J, Vermonden T, Amin Yavari S. Bactericidal coating to prevent early and delayed implant-related infections. J Control Release 2020; 326:38-52. [PMID: 32580041 DOI: 10.1016/j.jconrel.2020.06.014] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Revised: 05/22/2020] [Accepted: 06/14/2020] [Indexed: 01/01/2023]
Abstract
The occurrence of an implant-associated infection (IAI) with the formation of a persisting bacterial biofilm remains a major risk following orthopedic biomaterial implantation. Yet, progress in the fabrication of tunable and durable implant coatings with sufficient bactericidal activity to prevent IAI has been limited. Here, an electrospun composite coating was optimized for the combinatorial and sustained delivery of antibiotics. Antibiotics-laden poly(ε-caprolactone) (PCL) and poly`1q`(lactic-co glycolic acid) (PLGA) nanofibers were electrospun onto lattice structured titanium (Ti) implants. In order to achieve tunable and independent delivery of vancomycin (Van) and rifampicin (Rif), we investigated the influence of the specific drug-polymer interaction and the nanofiber coating composition on the drug release profile and durability of the polymer-Ti interface. We found that a bi-layered nanofiber structure, produced by electrospinning of an inner layer of [PCL/Van] and an outer layer of [PLGA/Rif], yielded the optimal combinatorial drug release profile. This resulted in markedly enhanced bactericidal activity against planktonic and adherent Staphylococcus aureus for 6 weeks as compared to single drug delivery. Moreover, after 6 weeks, synergistic bacterial killing was observed as a result of sustained Van and Rif release. The application of a nanofiber-filled lattice structure successfully prevented the delamination of the multi-layer coating after press-fit cadaveric bone implantation. This new lattice design, in conjunction with the multi-layer nanofiber structure, can be applied to develop tunable and durable coatings for various metallic implantable devices. This is particularly appealing to tune the release of multiple antimicrobial agents over a period of weeks to prevent early and delayed onset IAI.
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Affiliation(s)
- F Jahanmard
- Department of Orthopedics, University Medical Center Utrecht, Utrecht, the Netherlands
| | - M Croes
- Department of Orthopedics, University Medical Center Utrecht, Utrecht, the Netherlands
| | - M Castilho
- Department of Orthopedics, University Medical Center Utrecht, Utrecht, the Netherlands; Department of Biomedical Engineering, Eindhoven University of Technology, Eindhoven, the Netherlands
| | - A Majed
- Department of Orthopedics, University Medical Center Utrecht, Utrecht, the Netherlands
| | - M J Steenbergen
- Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences (UIPS), Utrecht University, Utrecht, the Netherlands
| | - K Lietaert
- 3D Systems - LayerWise NV, Leuven, Belgium; Department of Metallurgy and Materials Engineering, KU Leuven, Leuven, Belgium
| | - H C Vogely
- Department of Orthopedics, University Medical Center Utrecht, Utrecht, the Netherlands
| | - B C H van der Wal
- Department of Orthopedics, University Medical Center Utrecht, Utrecht, the Netherlands
| | - D A C Stapels
- Department of Medical Microbiology, University Medical Center Utrecht, Utrecht, the Netherlands
| | - J Malda
- Department of Orthopedics, University Medical Center Utrecht, Utrecht, the Netherlands; Department of Clinical Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, the Netherlands
| | - T Vermonden
- Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences (UIPS), Utrecht University, Utrecht, the Netherlands
| | - S Amin Yavari
- Department of Orthopedics, University Medical Center Utrecht, Utrecht, the Netherlands.
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19
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Thukkaram M, Vaidulych M, Kylián O, Hanuš J, Rigole P, Aliakbarshirazi S, Asadian M, Nikiforov A, Van Tongel A, Biederman H, Coenye T, Du Laing G, Morent R, De Wilde L, Verbeken K, De Geyter N. Investigation of Ag/a-C:H Nanocomposite Coatings on Titanium for Orthopedic Applications. ACS APPLIED MATERIALS & INTERFACES 2020; 12:23655-23666. [PMID: 32374146 DOI: 10.1021/acsami.9b23237] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
One of the leading causes of failure for any bone implant is implant-associated infections. The implant-bone interface is in fact the crucial site of infection where both the microorganisms and cells compete to populate the newly introduced implant surface. Most of the work dealing with this issue has focused on the design of implant coatings capable of preventing infection while ignoring cell proliferation or vice versa. The present study is therefore focused on investigating the antibacterial and biological properties of nanocomposite coatings based on an amorphous hydrocarbon (a-C:H) matrix containing silver nanoparticles (AgNPs). a-C:H coatings with varying silver concentrations were generated directly on medical grade titanium substrates using a combination of a gas aggregation source (GAS) and a plasma-enhanced chemical vapor deposition (PE-CVD) process. The obtained results revealed that the surface silver content increased from 1.3 at % to 5.3 at % by increasing the used DC magnetron current in the GAS from 200 to 500 mA. The in vitro antibacterial assays revealed that the nanocomposites with the highest number of silver content exhibited excellent antibacterial activities resulting in a 6-log reduction of Escherichia coli and a 4-log reduction of Staphylococcus aureus after 24 h of incubation. An MTT assay, fluorescence live/dead staining, and SEM microscopy observations of MC3T3 cells seeded on the uncoated and coated Ti substrates also showed that increasing the amount of AgNPs in the nanocomposites had no notable impact on their cytocompatibility, while improved cell proliferation was especially observed for the nanocomposites possessing a low amount of AgNPs. These controllable Ag/a-C:H nanocomposites on Ti substrates, which simultaneously provide an excellent antibacterial performance and good biocompatibility, could thus have promising applications in orthopedics and other biomedical implants.
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Affiliation(s)
- Monica Thukkaram
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering & Architecture, Ghent University, Ghent 9000, Belgium
| | - Mykhailo Vaidulych
- Department of Macromolecular Physics, Faculty of Mathematics and Physics, Charles University, Prague 116 36, Czech Republic
| | - Ondřej Kylián
- Department of Macromolecular Physics, Faculty of Mathematics and Physics, Charles University, Prague 116 36, Czech Republic
| | - Jan Hanuš
- Department of Macromolecular Physics, Faculty of Mathematics and Physics, Charles University, Prague 116 36, Czech Republic
| | - Petra Rigole
- Laboratory of Pharmaceutical Microbiology, Faculty of Pharmaceutical Sciences, Ghent University, Ghent 9000, Belgium
| | - Sheida Aliakbarshirazi
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering & Architecture, Ghent University, Ghent 9000, Belgium
| | - Mahtab Asadian
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering & Architecture, Ghent University, Ghent 9000, Belgium
| | - Anton Nikiforov
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering & Architecture, Ghent University, Ghent 9000, Belgium
| | - Alexander Van Tongel
- Orthopaedic Surgery and Traumatology, Department of Human Structure and Repair, Faculty of Medicine and Health Sciences, Ghent University, Ghent 9000, Belgium
| | - Hynek Biederman
- Department of Macromolecular Physics, Faculty of Mathematics and Physics, Charles University, Prague 116 36, Czech Republic
| | - Tom Coenye
- Laboratory of Pharmaceutical Microbiology, Faculty of Pharmaceutical Sciences, Ghent University, Ghent 9000, Belgium
| | - Gijs Du Laing
- Department of Green Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Ghent 9000, Belgium
| | - Rino Morent
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering & Architecture, Ghent University, Ghent 9000, Belgium
| | - Lieven De Wilde
- Orthopaedic Surgery and Traumatology, Department of Human Structure and Repair, Faculty of Medicine and Health Sciences, Ghent University, Ghent 9000, Belgium
| | - Kim Verbeken
- Department of Materials, Textiles, and Chemical Engineering, Faculty of Engineering & Architecture, Ghent University, Ghent 9000, Belgium
| | - Nathalie De Geyter
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering & Architecture, Ghent University, Ghent 9000, Belgium
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20
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Wang Z, Huang X, Jin S, Wang H, Yuan L, Brash JL. Rapid antibacterial effect of sunlight-exposed silicon nanowire arrays modified with Au/Ag alloy nanoparticles. J Mater Chem B 2019; 7:6202-6209. [DOI: 10.1039/c9tb01472a] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Au/Ag alloy nanoparticles modified silicon nanowire arrays can kill bacterial cells in several minutes under sunlight due to their photothermal and photocatalytic activities.
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Affiliation(s)
- Zhiqiang Wang
- Key Lab of Health Chemistry and Molecular Diagnosis of Suzhou
- Department of Polymer Science and Engineering
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
| | - Xiuzhen Huang
- Key Lab of Health Chemistry and Molecular Diagnosis of Suzhou
- Department of Polymer Science and Engineering
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
| | - Sheng Jin
- Key Lab of Health Chemistry and Molecular Diagnosis of Suzhou
- Department of Polymer Science and Engineering
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
| | - Hongwei Wang
- Key Lab of Health Chemistry and Molecular Diagnosis of Suzhou
- Department of Polymer Science and Engineering
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
| | - Lin Yuan
- Key Lab of Health Chemistry and Molecular Diagnosis of Suzhou
- Department of Polymer Science and Engineering
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
| | - John L. Brash
- School of Biomedical Engineering
- Department of Chemical Engineering
- McMaster University
- Hamilton
- Canada
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