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Zhang S, Xu J, He M, Sun Z, Li Y, Ding L, Wu L, Liu X, Du Z, Jiang S. Flexible, scalable and simple-fabricated silver nanorod-decorated bacterial nanocellulose SERS substrates cooperated with portable Raman spectrometer for on-site detection of pesticide residues. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 315:124300. [PMID: 38640626 DOI: 10.1016/j.saa.2024.124300] [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: 03/01/2024] [Revised: 04/13/2024] [Accepted: 04/14/2024] [Indexed: 04/21/2024]
Abstract
Owing to good flexibility, prominent mechanical properties, three-dimensional (3D) nanofibrous structure and low background interference, sustainable bacterial nanocellulose (BNC) is a highly attractive matrix material for surface-enhanced Raman scattering (SERS) sensor. Herein, a highly sensitive, flexible and scalable silver nanorod-decorated BNC (AgNRs@BNC) SERS sensor is developed by a simple vacuum-assisted filtration. The AgNRs were firmly locked in the 3D nanofibrous network of cellulose nanofibers upon vacuum drying process, resulting in the formation of 3D SERS hotspots with a depth of more than 10 μm on the sensor. With 4-aminothiophenol (4-ATP) as a target molecule, a lowest distinguishable level of 10-12 M and a high enhancement factor of 1.1 × 109 were realized by the optimal AgNRs1.5@BNC SERS sensor. Moreover, the AgNRs@BNC SERS sensor exhibits high detectable level of 10-9 M for thiram molecules by integrating with a portable Raman spectrometer. Besides, toxic thiram residues on grape surface could be directly on-site identified by the combination of AgNRs@BNC SERS sensors and a portable Raman spectrometer through a feasible press-and-peel method. The flexible AgNRs@BNC SERS sensor cooperated with portable Raman system demonstrates great potential for on-site detection of pesticide residues on irregular food surfaces.
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Affiliation(s)
- Sihang Zhang
- Key Laboratory of Food Nutrition and Functional Food of Hainan Province, School of Food Science and Engineering, Hainan University, Haikou 570228, China; School of Fashion and Textiles, The Hong Kong Polytechnic University, Hung Hom, Kowloon 999077, Hong Kong, China; Hainan Institute for Food Control, Key Laboratory of Tropical Fruits and Vegetables Quality and Safety for State Market Regulation, Haikou 570314, China.
| | - Jiechen Xu
- Key Laboratory of Food Nutrition and Functional Food of Hainan Province, School of Food Science and Engineering, Hainan University, Haikou 570228, China
| | - Ming He
- Key Laboratory of Food Nutrition and Functional Food of Hainan Province, School of Food Science and Engineering, Hainan University, Haikou 570228, China
| | - Zhichang Sun
- Key Laboratory of Food Nutrition and Functional Food of Hainan Province, School of Food Science and Engineering, Hainan University, Haikou 570228, China
| | - Yao Li
- Key Laboratory of Food Nutrition and Functional Food of Hainan Province, School of Food Science and Engineering, Hainan University, Haikou 570228, China
| | - Lei Ding
- Shandong Key Laboratory of Chemical Energy Storage and New Battery Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252000, China
| | - Long Wu
- Key Laboratory of Food Nutrition and Functional Food of Hainan Province, School of Food Science and Engineering, Hainan University, Haikou 570228, China; Hainan Institute for Food Control, Key Laboratory of Tropical Fruits and Vegetables Quality and Safety for State Market Regulation, Haikou 570314, China
| | - Xing Liu
- Key Laboratory of Food Nutrition and Functional Food of Hainan Province, School of Food Science and Engineering, Hainan University, Haikou 570228, China; Hainan Institute for Food Control, Key Laboratory of Tropical Fruits and Vegetables Quality and Safety for State Market Regulation, Haikou 570314, China
| | - Zoufei Du
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, China.
| | - Shouxiang Jiang
- School of Fashion and Textiles, The Hong Kong Polytechnic University, Hung Hom, Kowloon 999077, Hong Kong, China.
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Balaei H, Ghasemi HM, Aghdam RM, Cheraghali B, Sohi MH. The effect of silver nanoparticles on biological and corrosion behavior of electrophoretically deposited hydroxyapatite film on Ti6Al4V. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2024; 35:18. [PMID: 38526654 DOI: 10.1007/s10856-024-06784-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Accepted: 02/13/2024] [Indexed: 03/27/2024]
Abstract
Surface modification of titanium and its alloys has been seriously considered by researchers to improve their biological behaviors, in the past few decades. In present research, hydroxyapatite (HA) based composite coatings with different concentrations of 0, 2, 4, and 6 wt% of silver (Ag) nanoparticles were electrophoretically deposited (EPD) on anodized and non-anodized Ti6Al4V, using a direct current at a voltage of 30 V for 10 min at room temperature. The specimens were then characterized by means of X-ray diffraction (XRD) analysis, Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM) equipped with energy dispersive spectroscopy (EDS). The cell adhesion images and cell viability results showed that HA-Ag composite coatings significantly promoted the biocompatibility of samples compared with the non-anodized and anodized Ti6Al4V. The viabilities of Mg-63 cells on HA-4%Ag coating and bi-layer coating (HA-4%Ag on anodized specimen) were approximately 91% and they were considered as the best coatings in term of biocompatibility. On the other hand, the antibacterial assessments demonstrated that HA-6%Ag coating had the best antibacterial performance compared with other samples. Furthermore, Tafel polarization curves indicated that corrosion resistance of the bi-layer coating was higher than those of the other specimens. The polarization resistance of this coating was about 7 times more than that of theTi6Al4V alloy.
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Affiliation(s)
- Hassan Balaei
- School of Metallurgy and Materials Engineering, College of Engineering, University of Tehran, Tehran, Iran
| | - H M Ghasemi
- School of Metallurgy and Materials Engineering, College of Engineering, University of Tehran, Tehran, Iran
| | | | - B Cheraghali
- Department of Materials Engineering, South Tehran Branch, Islamic Azad University, Tehran, Iran
| | - Mahmoud Heydarzadeh Sohi
- School of Metallurgy and Materials Engineering, College of Engineering, University of Tehran, Tehran, Iran
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Shao H, Zhang T, Gong Y, He Y. Silver-Containing Biomaterials for Biomedical Hard Tissue Implants. Adv Healthc Mater 2023; 12:e2300932. [PMID: 37300754 DOI: 10.1002/adhm.202300932] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Revised: 05/22/2023] [Indexed: 06/12/2023]
Abstract
Bacterial infection caused by biomaterials is a very serious problem in the clinical treatment of implants. The emergence of antibiotic resistance has prompted other antibacterial agents to replace traditional antibiotics. Silver is rapidly developing as an antibacterial candidate material to inhibit bone infections due to its significant advantages such as high antibacterial timeliness, high antibacterial efficiency, and less susceptibility to bacterial resistance. However, silver has strong cytotoxicity, which can cause inflammatory reactions and oxidative stress, thereby destroying tissue regeneration, making the application of silver-containing biomaterials extremely challenging. In this paper, the application of silver in biomaterials is reviewed, focusing on the following three issues: 1) how to ensure the excellent antibacterial properties of silver, and not easy to cause bacterial resistance; 2) how to choose the appropriate method to combine silver with biomaterials; 3) how to make silver-containing biomaterials in hard tissue implants have further research. Following a brief introduction, the discussion focuses on the application of silver-containing biomaterials, with an emphasis on the effects of silver on the physicochemical properties, structural properties, and biological properties of biomaterials. Finally, the review concludes with the authors' perspectives on the challenges and future directions of silver in commercialization and in-depth research.
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Affiliation(s)
- Huifeng Shao
- School of Mechanical Engineering, Hangzhou Dianzi University, Hangzhou, 310018, China
- State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou, 310027, China
- Key Laboratory of 3D Printing Process and Equipment of Zhejiang Province, School of Mechanical Engineering, Zhejiang University, Hangzhou, 310027, China
- Zhejiang Guanlin Machinery Limited Company, Anji, Hangzhou, 313300, China
| | - Tao Zhang
- School of Mechanical Engineering, Hangzhou Dianzi University, Hangzhou, 310018, China
| | - Youping Gong
- School of Mechanical Engineering, Hangzhou Dianzi University, Hangzhou, 310018, China
| | - Yong He
- State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou, 310027, China
- Key Laboratory of 3D Printing Process and Equipment of Zhejiang Province, School of Mechanical Engineering, Zhejiang University, Hangzhou, 310027, China
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Leung BAY, Joe W, Mofarah SS, Sorrell CC, Abbasi R, Azadeh M, Arsecularatne JA, Koshy P. Unveiling the mechanisms behind surface degradation of dental resin composites in simulated oral environments. J Mater Chem B 2023; 11:7707-7720. [PMID: 37465918 DOI: 10.1039/d3tb00756a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/20/2023]
Abstract
Dental resin composites are widely used as restorative materials due to their natural aesthetic and versatile properties. However, there has been limited research on the degradation mechanisms of these composites in gastric acid environments, which would be common in patients with gastroesophageal reflux. This study aims to investigate the degradation behavior of dental composites immersed in simulated oral environments, including acid, saliva, and water. Mechanical and morphological properties of the composites, upon immersion in the simulated environments, were thoroughly examined using hardness testing and SEM imaging. Qualitative analyses of the ions leached from the polymer matrix and fillers were conducted using XPS and ICP-MS. In addition, the thermodynamic stability of the inorganic fillers of the composites in aqueous solutions across a wide range of pH values was theoretically studied through construction of Pourbaix diagrams. This study proposed a mechanism for composite leaching involving interactions between the matrix's hydrophilic groups and the aqueous immersion media, leading to swelling and chemical degradation of the composites. Furthermore, it was demonstrated that filler leaching was followed by ion exchange with Ca and P, resulting in the formation of hard calcified layers on the composite surface. The current findings provide valuable insights into the development of new composite materials with improved durability and resistance to degradation, especially for patients suffering from gastroesophageal reflux.
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Affiliation(s)
- Brenda Ah-Yan Leung
- School of Materials Science and Engineering, UNSW Sydney, NSW 2052, Australia.
| | - William Joe
- School of Materials Science and Engineering, UNSW Sydney, NSW 2052, Australia.
| | - Sajjad S Mofarah
- School of Materials Science and Engineering, UNSW Sydney, NSW 2052, Australia.
| | - Charles C Sorrell
- School of Materials Science and Engineering, UNSW Sydney, NSW 2052, Australia.
| | - Roozbeh Abbasi
- School of Materials Science and Engineering, UNSW Sydney, NSW 2052, Australia.
| | - Mohsen Azadeh
- School of Materials Science and Engineering, Sharif University of Technology, Tehran, Iran
| | | | - Pramod Koshy
- School of Materials Science and Engineering, UNSW Sydney, NSW 2052, Australia.
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Ren J, Guo X. The germicidal effect, biosafety and mechanical properties of antibacterial resin composite in cavity filling. Heliyon 2023; 9:e19078. [PMID: 37662807 PMCID: PMC10474440 DOI: 10.1016/j.heliyon.2023.e19078] [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: 04/15/2023] [Revised: 07/22/2023] [Accepted: 08/10/2023] [Indexed: 09/05/2023] Open
Abstract
In recent years, dental resin materials have become increasingly popular for cavity filling. However, these materials can shrink during polymerization, leading to microleakages that enable bacteria to erode tooth tissue and cause secondary caries. As a result, there is great clinical demand for the development of antibacterial resins. The principle of antibacterial resin includes contact killing and filler-release killing of bacteria. For contact killing, quaternary ammonium salts (QACs) and antibacterial peptides (AMPs) can be added. For filler-release killing, chlorhexidine (CHX) and nanoparticles are used. These antibacterial agents are effective against gram-positive bacteria, gram-negative bacteria, fungi, and more. Among them, QACs has a lasting antibacterial effect, and silver nanoparticles even have a certain ability to kill viruses. Biocompatibility-wise, QACs, AMPs, and CHX have low cytotoxicity to cells when added into the resin. However, nanoparticles with smaller particle sizes have higher cytotoxicity. In terms of mechanical properties, QACs, AMPs, and CHX do not negatively affect the resin. However, the addition of magnesium oxide can have a negative impact. This paper reviews the types and antibacterial principles of commonly used antibacterial resins in recent years, evaluates their antibacterial effect, biological safety, and mechanical properties, and provides references for selecting clinical filling materials.
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Affiliation(s)
- Jiamu Ren
- Yanbian University, Jilin, 133002, China
| | - Xinwei Guo
- Peking University, Haidian District, Beijing, 100871, China
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Dogan D, Erdem U, Bozer BM, Turkoz MB, Yıldırım G, Metin AU. Resorbable membrane design: In vitro characterization of silver doped-hydroxyapatite-reinforced XG/PEI semi-IPN composite. J Mech Behav Biomed Mater 2023; 142:105887. [PMID: 37141744 DOI: 10.1016/j.jmbbm.2023.105887] [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: 03/09/2023] [Revised: 04/30/2023] [Accepted: 05/01/2023] [Indexed: 05/06/2023]
Abstract
In this study, the production and characterization of silver-doped hydroxyapatite (AgHA) reinforced Xanthan gum (XG) and Polyethyleneimine (PEI) reinforced semi-interpenetrating polymer network (IPN) biocomposite, known to be used as bone cover material for therapeutic purposes in bone tissue, were performed. XG/PEI IPN films containing 2AgHA nanoparticles were produced by simultaneous condensation and ionic gelation. Characteristics of 2AgHA-XG/PEI nanocomposite film were evaluated by structural, morphological (SEM, XRD, FT-IR, TGA, TM, and Raman) and biological activity analysis (degradation, MTT, genotoxicity, and antimicrobial activity) techniques. In the physicochemical characterization, it was determined that 2AgHA nanoparticles were homogeneously dispersed in the XG/PEI-IPN membrane at high concentration and the thermal and mechanical stability of the formed film were high. The nanocomposites showed high antibacterial activity against Acinetobacter Baumannii (A.Baumannii), Staphylococcus aureus (S.aureus), and Streptococcus mutans (S.mutans). L929 exhibited good biocompatibility for fibroblast cells and was determined to support the formation of MCC cells. It was shown that a resorbable 2AgHA-XG/PEI composite material was obtained with a high degradation rate and 64% loss of mass at the end of the 7th day. Physico-chemically developed biocompatible and biodegradable XG-2AgHA/PEI nanocomposite semi-IPN films possessed an important potential for the treatment of defects in bone tissue as an easily applicable bone cover. Besides, it was noted that 2AgHA-XG/PEI biocomposite could increase cell viability, especially in dental-bone treatments for coating, filling, and occlusion.
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Affiliation(s)
- Deniz Dogan
- Kirikkale University, Faculty of Science, Department of Chemistry, 71450, Turkey
| | - Umit Erdem
- Kirikkale University, Scientific and Tech. Research Center, Kirikkale, 71450, Turkey.
| | - Busra M Bozer
- Hitit University, Scientific Technical App. and Research Center, Corum, 19030, Turkey
| | - Mustafa B Turkoz
- Karabuk University, Faculty of Engineering, Electric and Electronics Engineering, Karabuk, 78050, Turkey
| | - Gurcan Yıldırım
- Abant Izzet Baysal University, Faculty of Engineering, Mechanical Engineering, Bolu, 14280, Turkey
| | - Aysegul U Metin
- Kirikkale University, Faculty of Science, Department of Chemistry, 71450, Turkey
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7
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Saghiri MA, Vakhnovetsky J, Vakhnovetsky A, Morgano SM. Functional role of inorganic trace elements in dentin apatite tissue-part III: Se, F, Ag, and B. J Trace Elem Med Biol 2022; 72:126990. [PMID: 35569285 DOI: 10.1016/j.jtemb.2022.126990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/06/2022] [Revised: 04/07/2022] [Accepted: 04/29/2022] [Indexed: 11/18/2022]
Abstract
Dentin hydroxyapatite possesses a unique versatile structure which allows it to undergo ionic substitutions. Trace elements play pivotal roles within the oral cavity, especially in dentin apatite tissue. Therefore, it is critical to explore the role of these elements in dentin apatite structure. The roles of other inorganic elements in dentin apatite were discussed in part I (Mg, Sr, Zn, and Fe) and part II (Cu, Mn, Si, and Li) of these series. In the last part of the review series, the role of selenium, fluorine, silver, and boron in the regulation of dentin apatite structure and function was discussed. We evaluated how these elements affect the overall size, morphology, and crystallinity of dentin apatite crystals. Moreover, we investigated the importance of these elements in regulating the solubility of dentin apatite. An electronic search was performed on the role of these trace elements in dentin apatite from January 2010 to January 2022. The concentration of selenium in teeth has been explored only recently, particularly its incorporation into dentin apatite. Silver nanomaterials inhibit the growth of cariogenic microorganisms as well as arrest the degradation of collagen. Fluorine was found to have important roles in dentin remineralization and dentinal tubule occlusion, making it widely used for hydroxyapatite doping. Boron is critical for mineralized tissues like bone, dentin, and enamel, but its exact role in dentin apatite is unknown. Therefore, understanding the impact of these elements on dentin apatite is potentially transformative, as it may help to fill a significant knowledge gap in teeth mechanics.
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Affiliation(s)
- Mohammad Ali Saghiri
- Director, Biomaterial Laboratory and Assistant Professor, Department of Restorative Dentistry, Rutgers School of Dental Medicine, Newark, NJ, United States; Adjunct Assistant Professor, Department of Endodontics, University of the Pacific, Arthur A. Dugoni School of Dentistry, San Francisco, CA, United States.
| | - Julia Vakhnovetsky
- Visiting Researcher, Sector of Angiogenesis Regenerative Medicine, Dr. Hajar Afsar Lajevardi Research Cluster (DHAL), Hackensack, NJ, United States; Pre-Dental Student, Rutgers School of Dental Medicine, Newark, NJ, United States
| | - Anna Vakhnovetsky
- Pre-Medical Student, Johns Hopkins University, Baltimore, MD, United States
| | - Steven M Morgano
- Chair and Professor, Director and Professor, Department of Restorative Dentistry, Rutgers School of Dental Medicine, Newark, NJ, United States
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Biocomposites Containing Silver Nanoparticles for Biomedical Applications. J CLUST SCI 2021. [DOI: 10.1007/s10876-021-02180-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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