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Sun Z, Kong Y, Lan L, Meng Y, You T, Pauer R, Wang H, Zhang Y, Tang M, deMello A, Liang Y, Hu J, Wang J. A High Efficiency, Low Resistance Antibacterial Filter Formed by Dopamine-Mediated In Situ Deposition of Silver onto Glass Fibers. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2301074. [PMID: 38659180 DOI: 10.1002/smll.202301074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 04/13/2024] [Indexed: 04/26/2024]
Abstract
The coating of filter media with silver is typically achieved by chemical deposition and aerosol processes. Whilst useful, such approaches struggle to provide uniform coating and are prone to blockage. To address these issues, an in situ method for coating glass fibers is presented via the dopamine-mediated electroless metallization method, yielding filters with low air resistance and excellent antibacterial performance. It is found that the filtration efficiency of the filters is between 94 and 97% and much higher than that of silver-coated filters produced using conventional dipping methods (85%). Additionally, measured pressure drops ranged between 100 and 150 Pa, which are lower than those associated with dipped filters (171.1 Pa). Survival rates of Escherichia coli and Bacillus subtilis bacteria exposed to the filters decreased to 0 and 15.7%±1.49, respectively after 2 h, with no bacteria surviving after 6 h. In contrast, survival rates of E. coli and B. subtilis bacteria on the uncoated filters are 92.5% and 89.5% after 6 h. Taken together, these results confirm that the in situ deposition of silver onto fiber surfaces effectively reduces pore clogging, yielding low air resistance filters that can be applied for microbial filtration and inhibition in a range of environments.
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Affiliation(s)
- Zhaoxia Sun
- School of Light Industry and Engineering, South China University of Technology, Guangzhou, 510640, China
- Institute of Environmental Engineering, ETH Zürich, Zürich, 8093, Switzerland
- Laboratory for Advanced Analytical Technologies, Empa, Swiss Federal Laboratories for Materials Science and Technology, Dübendorf, 8600, Switzerland
| | - Ying Kong
- Institute of Environmental Engineering, ETH Zürich, Zürich, 8093, Switzerland
- Laboratory for Advanced Analytical Technologies, Empa, Swiss Federal Laboratories for Materials Science and Technology, Dübendorf, 8600, Switzerland
| | - Liang Lan
- School of Light Industry and Engineering, South China University of Technology, Guangzhou, 510640, China
| | - Yingchao Meng
- Department of Chemistry & Applied Biosciences, ETH Zürich, Zürich, 8093, Switzerland
| | - Tianle You
- School of Light Industry and Engineering, South China University of Technology, Guangzhou, 510640, China
| | - Robin Pauer
- Laboratory for Advanced Analytical Technologies, Empa, Swiss Federal Laboratories for Materials Science and Technology, Dübendorf, 8600, Switzerland
| | - Hao Wang
- National Key Laboratory of Nuclear, Biological and Chemical Disaster Protection, Academy of Chemical Prevention, Academy of Military Sciences, Beijing, 100191, China
| | - Yizhou Zhang
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, China
| | - Min Tang
- School of Light Industry and Engineering, South China University of Technology, Guangzhou, 510640, China
| | - Andrew deMello
- Department of Chemistry & Applied Biosciences, ETH Zürich, Zürich, 8093, Switzerland
| | - Yun Liang
- School of Light Industry and Engineering, South China University of Technology, Guangzhou, 510640, China
| | - Jian Hu
- School of Light Industry and Engineering, South China University of Technology, Guangzhou, 510640, China
| | - Jing Wang
- Institute of Environmental Engineering, ETH Zürich, Zürich, 8093, Switzerland
- Laboratory for Advanced Analytical Technologies, Empa, Swiss Federal Laboratories for Materials Science and Technology, Dübendorf, 8600, Switzerland
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Tan X, Gerhard E, Wang Y, Tran RT, Xu H, Yan S, Rizk EB, Armstrong AD, Zhou Y, Du J, Bai X, Yang J. Development of Biodegradable Osteopromotive Citrate-Based Bone Putty. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2203003. [PMID: 35717669 PMCID: PMC9463100 DOI: 10.1002/smll.202203003] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Indexed: 05/30/2023]
Abstract
The burden of bone fractures demands development of effective biomaterial solutions, while additional acute events such as noncompressible bleeding further motivate the search for multi-functional implants to avoid complications including osseous hemorrhage, infection, and nonunion. Bone wax has been widely used in orthopedic bleeding control due to its simplicity of use and conformation to irregular defects; however, its nondegradability results in impaired bone healing, risk of infection, and significant inflammatory responses. Herein, a class of intrinsically fluorescent, osteopromotive citrate-based polymer/hydroxyapatite (HA) composites (BPLP-Ser/HA) as a highly malleable press-fit putty is designed. BPLP-Ser/HA putty displays mechanics replicating early nonmineralized bone (initial moduli from ≈2-500 kPa), hydration induced mechanical strengthening in physiological conditions, tunable degradation rates (over 2 months), low swelling ratios (<10%), clotting and hemostatic sealing potential (resistant to blood pressure for >24 h) and significant adhesion to bone (≈350-550 kPa). Simultaneously, citrate's bioactive properties result in antimicrobial (≈100% and 55% inhibition of S. aureus and E. coli) and osteopromotive effects. Finally, BPLP-Ser/HA putty demonstrates in vivo regeneration in a critical-sized rat calvaria model equivalent to gold standard autograft. BPLP-Ser/HA putty represents a simple, off-the-shelf solution to the combined challenges of acute wound management and subsequent bone regeneration.
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Affiliation(s)
- Xinyu Tan
- Department of Cell Biology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong Province, 510515, China
- Department of Biomedical Engineering, Materials Research Institute, The Huck Institutes of the Life Sciences, The Pennsylvania State University, University Park, PA 16802, USA
- Academy of Orthopedics, Provincial Key Laboratory of Bone and Joint Degenerative Diseases, The Third Affiliated Hospital of Southern Medical University, Guangzhou, Guangdong Province, 510280, China
| | - Ethan Gerhard
- Department of Biomedical Engineering, Materials Research Institute, The Huck Institutes of the Life Sciences, The Pennsylvania State University, University Park, PA 16802, USA
| | - Yuqi Wang
- Department of Biomedical Engineering, Materials Research Institute, The Huck Institutes of the Life Sciences, The Pennsylvania State University, University Park, PA 16802, USA
| | - Richard T. Tran
- Department of Biomedical Engineering, Materials Research Institute, The Huck Institutes of the Life Sciences, The Pennsylvania State University, University Park, PA 16802, USA
| | - Hui Xu
- Department of Biomedical Engineering, Materials Research Institute, The Huck Institutes of the Life Sciences, The Pennsylvania State University, University Park, PA 16802, USA
| | - Su Yan
- Department of Biomedical Engineering, Materials Research Institute, The Huck Institutes of the Life Sciences, The Pennsylvania State University, University Park, PA 16802, USA
| | - Elias B. Rizk
- Department of Neurosurgery, College of Medicine, The Pennsylvania State University, Hershey, PA 17033, USA
| | - April D. Armstrong
- Department of Orthopaedics and Rehabilitation, College of Medicine, The Pennsylvania State University, Hershey, PA 17033, USA
| | - Yuxiao Zhou
- Department of Mechanical Engineering, The Pennsylvania State University, University Park, PA 16802, USA
| | - Jing Du
- Department of Mechanical Engineering, The Pennsylvania State University, University Park, PA 16802, USA
| | - Xiaochun Bai
- Department of Cell Biology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong Province, 510515, China
- Academy of Orthopedics, Provincial Key Laboratory of Bone and Joint Degenerative Diseases, The Third Affiliated Hospital of Southern Medical University, Guangzhou, Guangdong Province, 510280, China
| | - Jian Yang
- Department of Biomedical Engineering, Materials Research Institute, The Huck Institutes of the Life Sciences, The Pennsylvania State University, University Park, PA 16802, USA
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Bruno F, Gigli L, Ferraro G, Cavallo A, Michaelis VK, Goobes G, Fratini E, Ravera E. Lysozyme is Sterically Trapped Within the Silica Cage in Bioinspired Silica-Lysozyme Composites: A Multi-Technique Understanding of Elusive Protein-Material Interactions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:8030-8037. [PMID: 35738569 PMCID: PMC9261187 DOI: 10.1021/acs.langmuir.2c00836] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 06/08/2022] [Indexed: 06/15/2023]
Abstract
Lysozyme is widely known to promote the formation of condensed silica networks from solutions containing silicic acid, in a reproducible and cost-effective way. However, little is known about the fate of the protein after the formation of the silica particles. Also, the relative arrangement of the different components in the resulting material is a matter of debate. In this study, we investigate the nature of the protein-silica interactions by means of solid-state nuclear magnetic resonance spectroscopy, small-angle X-ray scattering, and electron microscopy. We find that lysozyme and silica are in intimate contact and strongly interacting, but their interaction is neither covalent nor electrostatic: lysozyme is mostly trapped inside the silica by steric effects.
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Affiliation(s)
- Francesco Bruno
- Magnetic
Resonance Center (CERM), University of Florence, via L. Sacconi 6, Sesto Fiorentino 50019, Italy
- Department
of Chemistry “Ugo Schiff”, University of Florence, via della Lastruccia 3, Sesto Fiorentino 50019, Italy
| | - Lucia Gigli
- Magnetic
Resonance Center (CERM), University of Florence, via L. Sacconi 6, Sesto Fiorentino 50019, Italy
- Department
of Chemistry “Ugo Schiff”, University of Florence, via della Lastruccia 3, Sesto Fiorentino 50019, Italy
| | - Giovanni Ferraro
- Department
of Chemistry “Ugo Schiff”, University of Florence, via della Lastruccia 3, Sesto Fiorentino 50019, Italy
- Consorzio
per lo Sviluppo dei Sistemi a Grande Interfase (CSGI), via della Lastruccia, 3, Sesto Fiorentino 50019, Italy
| | - Andrea Cavallo
- CERTEMA
S.c.a.r.l., S.P. Del
Cipressino Km 10, Cinigiano 58044, Italy
| | | | - Gil Goobes
- Department
of Chemistry, Bar-Ilan University, Ramat Gan 5290002, Israel
| | - Emiliano Fratini
- Department
of Chemistry “Ugo Schiff”, University of Florence, via della Lastruccia 3, Sesto Fiorentino 50019, Italy
- Consorzio
per lo Sviluppo dei Sistemi a Grande Interfase (CSGI), via della Lastruccia, 3, Sesto Fiorentino 50019, Italy
| | - Enrico Ravera
- Magnetic
Resonance Center (CERM), University of Florence, via L. Sacconi 6, Sesto Fiorentino 50019, Italy
- Department
of Chemistry “Ugo Schiff”, University of Florence, via della Lastruccia 3, Sesto Fiorentino 50019, Italy
- Consorzio
Interuniversitario Risonanze Magnetiche di Metalloproteine (CIRMMP), via L. Sacconi 6, Sesto Fiorentino 50019, Italy
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