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Dong X, Liu Y, Adcock AF, Sheriff K, Liang W, Yang L, Sun YP. Carbon-TiO 2 Hybrid Quantum Dots for Photocatalytic Inactivation of Gram-Positive and Gram-Negative Bacteria. Int J Mol Sci 2024; 25:2196. [PMID: 38396872 PMCID: PMC10889188 DOI: 10.3390/ijms25042196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 02/05/2024] [Accepted: 02/09/2024] [Indexed: 02/25/2024] Open
Abstract
Carbon-semiconductor hybrid quantum dots are classical carbon dots with core carbon nanoparticles doped with a selected nanoscale semiconductor. Specifically, on those with the nanoscale TiO2 doping, denoted as CTiO2-Dots, their synthesis and thorough characterization were reported previously. In this work, the CTiO2-Dots were evaluated for their visible light-activated antibacterial function, with the results showing the effective killing of not only Gram-positive but also the generally more resistant Gram-negative bacteria. The hybrid dots are clearly more potent antibacterial agents than their neat carbon dot counterparts. Mechanistically, the higher antibacterial performance of the CTiO2-Dots is attributed to their superior photoexcited state properties, which are reflected by the observed much brighter fluorescence emissions. Also considered and discussed is the possibility of additional contributions to the antibacterial activities due to the photosensitization of the nanoscale TiO2 by its doped core carbon nanoparticles.
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Affiliation(s)
- Xiuli Dong
- Department of Pharmaceutical Sciences, Biomanufacturing Research Institute and Technology Enterprise, North Carolina Central University, Durham, NC 27707, USA; (X.D.); (L.Y.)
- Department of Microbiology and Immunology, School of Osteopathic Medicine, Campbell University, Buies Creek, NC 27506, USA
| | - Yamin Liu
- Department of Chemistry, Clemson University, Clemson, SC 29634, USA
| | - Audrey F. Adcock
- Department of Pharmaceutical Sciences, Biomanufacturing Research Institute and Technology Enterprise, North Carolina Central University, Durham, NC 27707, USA; (X.D.); (L.Y.)
| | - Kirkland Sheriff
- Department of Chemistry, Clemson University, Clemson, SC 29634, USA
| | - Weixiong Liang
- Department of Chemistry, Clemson University, Clemson, SC 29634, USA
| | - Liju Yang
- Department of Pharmaceutical Sciences, Biomanufacturing Research Institute and Technology Enterprise, North Carolina Central University, Durham, NC 27707, USA; (X.D.); (L.Y.)
| | - Ya-Ping Sun
- Department of Chemistry, Clemson University, Clemson, SC 29634, USA
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Kupková M, Kupka M, Morovská Turoňová A, Oriňaková R. Microstructural, Mechanical and Corrosion Characteristics of Degradable PM Biomaterials Made from Copper-Coated Iron Powders. Materials (Basel) 2022; 15:1913. [PMID: 35269143 DOI: 10.3390/ma15051913] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 03/01/2022] [Accepted: 03/02/2022] [Indexed: 02/05/2023]
Abstract
Copper-containing iron-based materials have recently been recognized as potential biomaterials possessing antimicrobial ability. Since then, iron-copper systems have been prepared by different methods and investigated. This article is focused on PM materials made from composite powders. The powders, each particle of which consisted of an iron core and a copper shell, were prepared by electroplating. Test-pieces with copper contents of 0, 3.2, and 8 wt.% were fabricated by pressing and sintering from iron and composite powders. Some microstructural, mechanical, and corrosion characteristics of test-pieces were examined. Microstructures were composed of pores and iron grains with alloyed peripheral regions and copper-free cores. As the copper content in test-pieces was increased, their density and Young’s modulus decreased, and macrohardness, corrosion potential and corrosion current density increased. Likely causes of density and Young’s modulus reduction were higher porosity, low enough copper content, and compliant inclusions in stiff matrix. The increase in macrohardness was attributed to the precipitation hardening which prevailed over softening induced by pores. The increase in corrosion potential and corrosion current density was most likely due to the presence of more noble phase providing surfaces for a faster cathodic reaction.
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Deng B, Guo Y, Zhao MC, Li QF, Ma B, Duan B, Yin D, Atrens A. Study on a Novel Biodegradable and Antibacterial Fe-Based Alloy Prepared by Microwave Sintering. Materials (Basel) 2021; 14:ma14143784. [PMID: 34300703 PMCID: PMC8303899 DOI: 10.3390/ma14143784] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 06/20/2021] [Accepted: 06/24/2021] [Indexed: 11/16/2022]
Abstract
This research produced a porous Fe-8 wt.% Cu alloy by microwave sintering in order to achieve (i) an increased biodegradation rate, and (ii) an antibacterial function. The Fe-8Cu alloy had higher density, hardness and degradation rate (about 2 times higher) but smaller and fewer surface pores, compared to the pure Fe. The Fe-8Cu alloy had a strong antibacterial function (the antibacterial rates against E. coli were up to 99.9%) and good biocompatibility. This work provides a novel approach of alloy design and processing to develop novel antibacterial Fe-based alloys.
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Affiliation(s)
- Bin Deng
- Research Institute of Automobile Parts Technology, Hunan Institute of Technology, Hengyang 421002, China;
| | - Yingxue Guo
- School of Materials Science and Engineering, Central South University, Changsha 410083, China; (Y.G.); (B.D.)
| | - Ming-Chun Zhao
- School of Materials Science and Engineering, Central South University, Changsha 410083, China; (Y.G.); (B.D.)
- Correspondence: (M.-C.Z.); (D.Y.)
| | - Qing-Fen Li
- School of Mechanical Engineering, Hunan Institute of Technology, Hengyang 421002, China; (Q.-F.L.); (B.M.)
| | - Bin Ma
- School of Mechanical Engineering, Hunan Institute of Technology, Hengyang 421002, China; (Q.-F.L.); (B.M.)
| | - Bohua Duan
- School of Materials Science and Engineering, Central South University, Changsha 410083, China; (Y.G.); (B.D.)
| | - Dengfeng Yin
- School of Materials Science and Engineering, Central South University, Changsha 410083, China; (Y.G.); (B.D.)
- Correspondence: (M.-C.Z.); (D.Y.)
| | - Andrej Atrens
- School of Mechanical and Mining Engineering, The University of Queensland, Brisbane, QLD 4072, Australia;
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Wu Q, He C, Wang X, Zhang S, Zhang L, Xie R, Li Y, Wang X, Han Z, Zheng Z, Li G. Sustainable Antibacterial Surgical Suture Using a Facile Scalable Silk-Fibroin-Based Berberine Loading System. ACS Biomater Sci Eng 2021; 7:2845-2857. [PMID: 34043327 DOI: 10.1021/acsbiomaterials.1c00481] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Medical sutures with sustainable antibacterial properties can effectively inhibit pathogens, thus avoiding the occurrence of surgical site infection and reducing the recurrence of patients resulting in postoperative death. This paper describes a facile scalable antibacterial surgical suture with sustainable antibacterial function and fair mechanical and biocompatible properties using a simple, efficient, and eco-friendly method. Silk filaments were braided into a core-shell structure using a braiding machine, and then silk fibroin (SF) films loaded with different percentages of berberine (BB) were coated onto the surface of the suture. The drug-loaded sutures performed a slow drug-release profile of more than 7 days. Retention of the knot-pull tensile strength of all groups was above 87% during in vitro degradation within 42 days. The sutures had no toxicity to the cells' in vitro cytotoxicity. The results of the in vivo biocompatibility test showed mild inflammation and clear signs of supporting angiogenesis in the implantation site of the rats. This work provides a new route for achieving a BB-loaded and high-performance antibacterial suture, which is of great potential in applications for surgical operations.
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Affiliation(s)
- Qinting Wu
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China
| | - Chaoheng He
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China
| | - Xuchen Wang
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China
| | - Shujun Zhang
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China
| | - Li Zhang
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China
| | - Ruijuan Xie
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China
| | - Yi Li
- The School of Materials, University of Manchester, Oxford Road, Manchester M13 9PL, U.K
| | - Xiaoqin Wang
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China
| | - Zhifen Han
- Department of Medical Oncology, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Zhaozhu Zheng
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China
| | - Gang Li
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China
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Xue T, Attarilar S, Liu S, Liu J, Song X, Li L, Zhao B, Tang Y. Surface Modification Techniques of Titanium and its Alloys to Functionally Optimize Their Biomedical Properties: Thematic Review. Front Bioeng Biotechnol 2020; 8:603072. [PMID: 33262980 PMCID: PMC7686851 DOI: 10.3389/fbioe.2020.603072] [Citation(s) in RCA: 61] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2020] [Accepted: 10/07/2020] [Indexed: 11/25/2022] Open
Abstract
Depending on the requirements of specific applications, implanted materials including metals, ceramics, and polymers have been used in various disciplines of medicine. Titanium and its alloys as implant materials play a critical role in the orthopedic and dental procedures. However, they still require the utilization of surface modification technologies to not only achieve the robust osteointegration but also to increase the antibacterial properties, which can avoid the implant-related infections. This article aims to provide a summary of the latest advances in surface modification techniques, of titanium and its alloys, specifically in biomedical applications. These surface techniques include plasma spray, physical vapor deposition, sol-gel, micro-arc oxidation, etc. Moreover, the microstructure evolution is comprehensively discussed, which is followed by enhanced mechanical properties, osseointegration, antibacterial properties, and clinical outcomes. Future researches should focus on the combination of multiple methods or improving the structure and composition of the composite coating to further enhance the coating performance.
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Affiliation(s)
- Tong Xue
- School of Metallurgical Engineering, Xi'an University of Architecture and Technology, Xi'an, China
| | - Shokouh Attarilar
- Department of Pediatric Orthopaedics, Xin Hua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China.,State Key Laboratory of Metal Matrix Composites, School of Material Science and Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Shifeng Liu
- School of Metallurgical Engineering, Xi'an University of Architecture and Technology, Xi'an, China
| | - Jia Liu
- Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, China
| | - Xi Song
- School of Metallurgical Engineering, Xi'an University of Architecture and Technology, Xi'an, China
| | - Lanjie Li
- Chengsteel Group Co., Ltd., HBIS Group Co., Ltd., Chengde, China
| | - Beibei Zhao
- Chengsteel Group Co., Ltd., HBIS Group Co., Ltd., Chengde, China
| | - Yujin Tang
- Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, China
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Zhang T, Lu Z, Yang J, Wang J, Shen J, Wang X, Xiao Z, Niu Y, Chen L, Zhang X. Chitosan-based nanofragrance with antibacterial function applied to wallpaper. Eng Life Sci 2020; 20:541-546. [PMID: 33204241 PMCID: PMC7645650 DOI: 10.1002/elsc.202000016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 04/07/2020] [Accepted: 04/20/2020] [Indexed: 01/16/2023] Open
Abstract
Adding fragrances to the wallpaper can optimize our living environment and office environment. However, the poor adhesion and rapid release of fragrances on wallpapers have limited their application. In this study, vanillin was encapsulated in particles based on chitosan and poly(lactic-co-glycolic acid), thereby achieving a slow release of the fragrance. In addition, due to the addition of chitosan, the adhesion of the fragrance on the wallpaper was enhanced, and the wallpaper was given antibacterial properties.
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Affiliation(s)
- Tianlu Zhang
- State Key Laboratory of Biochemical EngineeringInstitute of Process EngineeringChinese Academy of SciencesBeijingP.R. China
- School of Chemical EngineeringUniversity of Chinese Academy of SciencesBeijingP.R. China
| | - Zhiguo Lu
- State Key Laboratory of Biochemical EngineeringInstitute of Process EngineeringChinese Academy of SciencesBeijingP.R. China
- School of Chemical EngineeringUniversity of Chinese Academy of SciencesBeijingP.R. China
| | - Jun Yang
- State Key Laboratory of Biochemical EngineeringInstitute of Process EngineeringChinese Academy of SciencesBeijingP.R. China
| | - Jianze Wang
- State Key Laboratory of Biochemical EngineeringInstitute of Process EngineeringChinese Academy of SciencesBeijingP.R. China
| | - Jie Shen
- State Key Laboratory of Biochemical EngineeringInstitute of Process EngineeringChinese Academy of SciencesBeijingP.R. China
- School of Chemical EngineeringUniversity of Chinese Academy of SciencesBeijingP.R. China
| | - Xiangyu Wang
- State Key Laboratory of Biochemical EngineeringInstitute of Process EngineeringChinese Academy of SciencesBeijingP.R. China
| | - Zuobing Xiao
- Shanghai Research Institute of Fragrance and Flavor IndustryShanghaiP.R. China
- School of Perfume and Aroma TechnologyShanghai Institute of TechnologyShanghaiP.R. China
| | - Yunwei Niu
- Shanghai Research Institute of Fragrance and Flavor IndustryShanghaiP.R. China
- School of Perfume and Aroma TechnologyShanghai Institute of TechnologyShanghaiP.R. China
| | - Lei Chen
- Department of Obstetrics and GynecologyNavy General Hospital of People Liberation ArmyBeijingP.R. China
| | - Xin Zhang
- State Key Laboratory of Biochemical EngineeringInstitute of Process EngineeringChinese Academy of SciencesBeijingP.R. China
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