1
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Mondal S. β-D-Glucopyranose-silver+ (1:1) complex as a small gas molecule scavenger. J Comput Chem 2024. [PMID: 38459681 DOI: 10.1002/jcc.27337] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 01/17/2024] [Accepted: 02/16/2024] [Indexed: 03/10/2024]
Abstract
In this article, density functional theory computations at the PBE0-D3/def2-TZVP level are reported to unveil the type of bonding between β-D-glucopyranose-silver ion (1:1) complex ([Ag(C6 H12 O6 )]+ ) and seven gas molecules, namely, H2 , C2 H2 , C2 H4 , CO, N2 , NO and O2 . Moreover, the relative preference of trapping among these molecules within the sight of Ag metal ion in the complex is explored. The nature of interaction of these small molecules with the [Ag(C6 H12 O6 )]+ ion is studied. Exergonic nature of binding is noted with the metal center for all the chosen small molecules except O2 . Thermochemical data reveals the binding preference of C2 H4 > C2 H2 > CO > NO > N2 > H2 . Natural bond orbital analysis, contour plot of the Laplacian of electron density, electron density descriptors, and gradient isosurface help in understanding the nature of interactions. Maximum bond formation is noted between the Ag-complex and CO molecule. Assessed energy decomposition analysis discloses the nature of interaction as mainly orbital between the bound small gas molecules and the Ag-complex. Frontier molecular orbital pictures further help in understanding the type of interaction as orbital. To disclose the kinetic stability of the gas molecule bound Ag complexes an ab initio molecular dynamics study is done at different temperatures up to 2 ps. These studies help in understanding the type of adsorption. Calculated conceptual density functional theory (CDFT) based reactivity descriptors corroborate well with results. β-D-glucopyranose-silver ion (1:1) complex may be used as small gas molecule scavenger.
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Affiliation(s)
- Sukanta Mondal
- Department of Education, A. M. School of Educational Sciences, Assam University, Silchar, Assam, India
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2
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Ozhava D, Winkler P, Mao Y. Enhancing antimicrobial activity and reducing cytotoxicity of silver nanoparticles through gelatin nanoparticles. Nanomedicine (Lond) 2024; 19:199-211. [PMID: 38271055 DOI: 10.2217/nnm-2023-0246] [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] [Indexed: 01/27/2024] Open
Abstract
Aim: To develop a novel stabilizing agent for silver nanoparticles (AgNPs) with the aim of enhancing its antibacterial efficacy against wound associated pathogens while mitigating their cytotoxic effect on human cells. Materials & methods: In this study, monodispersed gelatin nanoparticles were synthesized to stabilize AgNPs. The stability, antibacterial activity and biocompatibility of the gelatin-stabilized AgNPs (Gel-AgNPs) were compared with citrate-stabilized AgNPs (citrate-AgNPs) or silver ions. Results & conclusion: Gelatin-stabilized AgNPs showed significantly better antibacterial activities compared with citrate-stabilized AgNPs against both Gram-positive and Gram-negative bacteria. These Gel-AgNPs showed significantly lower cytotoxicity to human dermal fibroblasts compared with Ag+. These findings provided the first evidence substantiating a novel functionality of gelatin nanoparticles in both stabilizing and enhancing the activity of AgNPs.
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Affiliation(s)
- Derya Ozhava
- Department of Chemistry & Chemical Biology, Laboratory for Biomaterials Research, Rutgers University, 145 Bevier Rd, Piscataway, NJ 08854, USA
- Department of Chemistry & Chemical Processing Technologies, Cumra Vocational School, Selcuk University, Konya, 42130, Türkiye
| | - Petras Winkler
- Department of Chemistry & Chemical Biology, Laboratory for Biomaterials Research, Rutgers University, 145 Bevier Rd, Piscataway, NJ 08854, USA
| | - Yong Mao
- Department of Chemistry & Chemical Biology, Laboratory for Biomaterials Research, Rutgers University, 145 Bevier Rd, Piscataway, NJ 08854, USA
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3
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Cao H, Zhang G, Ma H, Xue Z, Huo R, Wang K, Liu Z. Sensitive and Extraction-Free Detection of Methicillin-Resistant Staphylococcus aureus through Ag + Aptamer-Based Color Reaction. J Microbiol Biotechnol 2024; 34:192-197. [PMID: 37957116 PMCID: PMC10840478 DOI: 10.4014/jmb.2308.08044] [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: 08/24/2023] [Revised: 09/11/2023] [Accepted: 09/14/2023] [Indexed: 11/15/2023]
Abstract
Refractory infections, such as hospital-acquired pneumonia, can be better diagnosed with the assistance of precise methicillin-resistant Staphylococcus aureus (MRSA) testing. However, traditional methods necessitate high-tech tools, rigorous temperature cycling, and the extraction of genetic material from MRSA cells. Herein, we propose a sensitive, specific, and extraction-free strategy for MRSA detection by integrating allosteric probe-based target recognition and exonuclease-III (Exo-III)-enhanced color reaction. The penicillin-binding protein 2a (PBP2a) aptamer in the allosteric probe binds with MRSA to convert protein signals to nucleic acid signals. This is followed by the DNA polymerase-assisted target recycle and the production of numerous single-strand DNA (ssDNA) chains which bind with silver ion (Ag+) aptamer to form a blunt terminus that can be identified by Exo-III. As a result, the Ag+ aptamer pre-coupled to magnetic nanoparticles is digested. After magnetic separation, the Ag+ in liquid supernatant catalyzes 3,3',5,5'-tetramethylbenzidine (TMB) for a color reaction. In addition, a concentration of 54 cfu/mL is predicted to be the lowest detectable value. Based on this, our assay has a wide linear detection range, covering 5 orders of magnitude and demonstrating a high specificity, which allows it to accurately distinguish the target MRSA from other microorganisms.
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Affiliation(s)
- Hongli Cao
- Emergency Department, Beijing Rehabilitation Hospital, Capital Medical University, Beijing 100144, P.R. China
| | - Guosheng Zhang
- Emergency Department, Beijing Rehabilitation Hospital, Capital Medical University, Beijing 100144, P.R. China
| | - Hui Ma
- Emergency Department, Beijing Rehabilitation Hospital, Capital Medical University, Beijing 100144, P.R. China
| | - Zhongwen Xue
- Emergency Department, Beijing Rehabilitation Hospital, Capital Medical University, Beijing 100144, P.R. China
| | - Ran Huo
- Emergency Department, Beijing Rehabilitation Hospital, Capital Medical University, Beijing 100144, P.R. China
| | - Kun Wang
- Emergency Department, Beijing Rehabilitation Hospital, Capital Medical University, Beijing 100144, P.R. China
| | - Zijin Liu
- Orthopedic Rehabilitation Department, Beijing Rehabilitation Hospital, Capital Medical University, Beijing 100144, P.R. China
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4
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Yu H, Luo Y, Luo S, Zhu W, Chen S, Lu Z, Zheng X. A Reusable Fluorescent Molecular Self-Assembly Cage for Simultaneous Detection and Recycling of Silver(I) Ion. Chem Asian J 2024; 19:e202300872. [PMID: 37945534 DOI: 10.1002/asia.202300872] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 11/08/2023] [Accepted: 11/09/2023] [Indexed: 11/12/2023]
Abstract
Although molecular self-assembled porous materials capable of ratiometric fluorescence probing and recycling of metal ions are both economically and environmentally attractive, very few current efforts have been devoted. Herein, we demonstrated a three-dimensional pure organic cage, namely 4-cage, which can serve as a fluorescent probe for simultaneous ratiometric detection and recycling of Ag+ ion. Taking advantage of the promising emission behavior of its rigidified tetraphenylethylene scaffolds and the chelating ability of its dynamically reversible imine moieties, on one hand, upon the addition of Ag+ , 4-cage undergoes coordination to form a stable but poorly soluble fluorescent complex, Ag+ @4-cage, accompanied by a fluorescence color change from bluish-green to yellowish-green. This allows us to differentiate Ag+ from other cations with high selectivity. On the other hand, upon the addition of Cl- anion, Ag+ @4-cage can be effectively converted into free 4-cage due to the competitive coordination of Cl- with Ag+ . Through this process, secondary usage of 4-cage and the recycling of Ag+ ion can be achieved.
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Affiliation(s)
- Haitao Yu
- School of Chemistry and Molecular Engineering, East China Normal University, 200241, Shanghai, China
| | - Yanju Luo
- Analytical & Testing Center, Sichuan University, 610064, Chengdu, China
| | - Shuai Luo
- Key Laboratory of Green Chemistry and Technology, Ministry of Education), College of Chemistry, Sichuan University, 610064, Chengdu, China
| | - Wencheng Zhu
- Institute of Neuroscience, CAS Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, 200031, Shanghai, China
| | - Shunwei Chen
- School of Materials Science and Engineering, Qilu University of Technology, Shandong Academy of Sciences), 250303, Jinan, China
| | - Zhiyun Lu
- Key Laboratory of Green Chemistry and Technology, Ministry of Education), College of Chemistry, Sichuan University, 610064, Chengdu, China
| | - Xujun Zheng
- Department of Chemistry, Duke University Durham, 27708, Durham, North Carolina, United States
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5
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Burić P, Čarapar I, Pavičić-Hamer D, Kovačić I, Jurković L, Dutour Sikirić M, Domazet Jurašin D, Mikac N, Bačić N, Lyons DM. Particle Size Modulates Silver Nanoparticle Toxicity during Embryogenesis of Urchins Arbacia lixula and Paracentrotus lividus. Int J Mol Sci 2023; 24:745. [PMID: 36614188 PMCID: PMC9821580 DOI: 10.3390/ijms24010745] [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] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 12/29/2022] [Accepted: 12/29/2022] [Indexed: 01/04/2023] Open
Abstract
Silver nanoparticles represent a threat to biota and have been shown to cause harm through a number of mechanisms, using a wide range of bioassay endpoints. While nanoparticle concentration has been primarily considered, comparison of studies that have used differently sized nanoparticles indicate that nanoparticle diameter may be an important factor that impacts negative outcomes. In considering this, the aim of the present study was to determine if different sizes of silver nanoparticles (AgNPs; 10, 20, 40, 60 and 100 nm) give rise to similar effects during embryogenesis of Mediterranean sea urchins Arbacia lixula and Paracentrotus lividus, or if nanoparticle size is a parameter that can modulate embryotoxicity and spermiotoxicity in these species. Fertilised embryos were exposed to a range of AgNP concentrations (1−1000 µg L−1) and after 48 h larvae were scored. Embryos exposed to 1 and 10 µg L−1 AgNPs (for all tested sizes) showed no negative effect in both sea urchins. The smaller AgNPs (size 10 and 20 nm) caused a decrease in the percentage of normally developed A. lixula larvae at concentrations ≥50 µg L−1 (EC50: 49 and 75 μg L−1, respectively) and at ≥100 µg L−1 (EC50: 67 and 91 μg L−1, respectively) for P. lividus. AgNPs of 40 nm diameter was less harmful in both species ((EC50: 322 and 486 μg L−1, for P. lividus and A. lixula, respectively)). The largest AgNPs (60 and 100 nm) showed a dose-dependent response, with little effect at lower concentrations, while more than 50% of larvae were developmentally delayed at the highest tested concentrations of 500 and 1000 µg L−1 (EC50(100 nm); 662 and 529 μg L−1, for P. lividus and A. lixula, respectively. While AgNPs showed no effect on the fertilisation success of treated sperm, an increase in offspring developmental defects and arrested development was observed in A. lixula larvae for 10 nm AgNPs at concentrations ≥50 μg L−1, and for 20 and 40 nm AgNPs at concentrations >100 μg L−1. Overall, toxicity was mostly ascribed to more rapid oxidative dissolution of smaller nanoparticles, although, in cases, Ag+ ion concentrations alone could not explain high toxicity, indicating a nanoparticle-size effect.
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Affiliation(s)
- Petra Burić
- Faculty of Natural Sciences, Juraj Dobrila University of Pula, Zagrebačka 30, 52100 Pula, Croatia
| | - Ivana Čarapar
- Center for Marine Research, Ruđer Bošković Institute, Giordano Paliaga 5, 52210 Rovinj, Croatia
| | - Dijana Pavičić-Hamer
- Center for Marine Research, Ruđer Bošković Institute, Giordano Paliaga 5, 52210 Rovinj, Croatia
| | - Ines Kovačić
- Faculty of Educational Sciences, Juraj Dobrila University of Pula, Zagrebačka 30, 52100 Pula, Croatia
| | - Lara Jurković
- Center for Marine Research, Ruđer Bošković Institute, Giordano Paliaga 5, 52210 Rovinj, Croatia
| | - Maja Dutour Sikirić
- Division of Physical Chemistry, Ruđer Bošković Institute, Bijenička cesta 54, 10000 Zagreb, Croatia
| | - Darija Domazet Jurašin
- Division of Physical Chemistry, Ruđer Bošković Institute, Bijenička cesta 54, 10000 Zagreb, Croatia
| | - Nevenka Mikac
- Division of Marine and Environmental Research, Ruđer Bošković Institute, Bijenička cesta 54, 10000 Zagreb, Croatia
| | - Niko Bačić
- Division of Marine and Environmental Research, Ruđer Bošković Institute, Bijenička cesta 54, 10000 Zagreb, Croatia
| | - Daniel Mark Lyons
- Center for Marine Research, Ruđer Bošković Institute, Giordano Paliaga 5, 52210 Rovinj, Croatia
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6
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Chen L, Darriet P. Qualitative Screening of Volatile Thiols in Wine by Selective Silver Ion Solid-Phase Extraction with Heart-Cutting Multidimensional Gas Chromatography Mass Spectrometry/Olfactometry. J Agric Food Chem 2022; 70:4701-4711. [PMID: 35404059 DOI: 10.1021/acs.jafc.2c00243] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The chemical analysis of odorous volatile thiols is intrinsically challenging. Substantial progress has been made in quantitative analysis of targeted thiols at ultra-trace concentrations (ng/L), but lesser analytical attention has been given to the qualitative screening of unknown thiols. This work presents a solid-phase extraction (SPE) method using a silver ion (Ag+)-based sorbent to isolate volatile thiols from red wine. This proposed Ag+ SPE method was effective (recovery: 87-101% for four non-furan thiols and 35-49% for two furan thiols), simple, safe, and greatly reduced artifacts, testifying to its suitability as the sample preparation protocol for a qualitative screening experiment. Separation and detection were conducted using heart-cutting multidimensional gas chromatography coupled to mass spectrometry/olfactometry (H/C MDGC-MS/O). Key parameters including H/C width, main host oven temperature, and cryogenic trapping temperature were investigated for optimal instrument performance. The developed Ag+ SPE H/C MDGC-MS/O strategy was readily applicable for qualitative screening of odorous volatile thiols in wine, as demonstrated by two case studies.
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Affiliation(s)
- Liang Chen
- University of Bordeaux, INRAE, Bordeaux INP, UMR1366 Œnologie, ISVV, F-33140 Villenave d'Ornon, France
| | - Philippe Darriet
- University of Bordeaux, INRAE, Bordeaux INP, UMR1366 Œnologie, ISVV, F-33140 Villenave d'Ornon, France
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7
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Gou JX, Luo Y, Yang XN, Zhang W, Lu JH, Tao Z, Xiao X. Study on the interactions between melamine-cored Schiff bases with cucurbit[ n]urils of different sizes and its application in detecting silver ions. Beilstein J Org Chem 2021; 17:2950-2958. [PMID: 34956415 PMCID: PMC8685555 DOI: 10.3762/bjoc.17.204] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Accepted: 12/02/2021] [Indexed: 12/01/2022] Open
Abstract
Three different complexes, TMeQ[6]-TBT, Q[7]-TBT, and Q[8]-TBT are constructed by three different cucurbiturils and synthesized by guest melamine-cored Schiff bases (TBT) through outer-surface interaction and host-guest interactions. TBT forms a TMeQ[6]-TBT complex with TMeQ[6] through outer-surface interaction, while Q[7]-TBT and Q[8]-TBT form complexes with Q[7,8] through host-guest interactions. Among them, Q[7]-TBT is selected as a UV detector for the detection of silver ions (Ag+). This work makes full use of the characteristics of each cucurbituril and melamine-cored Schiff base to construct a series of complexes and these are applied to metal detection.
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Affiliation(s)
- Jun-Xian Gou
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025, China
| | - Yang Luo
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025, China
| | - Xi-Nan Yang
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025, China
| | - Wei Zhang
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025, China
| | - Ji-Hong Lu
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025, China
| | - Zhu Tao
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025, China
| | - Xin Xiao
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025, China
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8
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Huang YC, Yang TY, Chen BX, Kung JC, Shih CJ. Evaluation of Antibacterial Effects of Matrix-Induced Silver Ions against Antibiotic-Resistant ESKAPE Pathogens. Pharmaceuticals (Basel) 2021; 14:1094. [PMID: 34832878 DOI: 10.3390/ph14111094] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 10/23/2021] [Accepted: 10/25/2021] [Indexed: 12/15/2022] Open
Abstract
Recently, drug-resistant bacterial infections, especially ESKAPE pathogens (Enterococcus faecium, Staphylococcus aureus, Klebsiella pneumoniae, Acinetobacter baumannii, Pseudomonas aeruginosa, and Enterobacter spp.), have become a critical health issue worldwide, highlighting the emerging need for novel antibacterial agents. In this study, silver nanoparticles were extracted from silver-containing mesoporous bioactive glass (MBG-Ag) using four different matrixes, including water, phosphate buffer saline (PBS), tryptic soy broth (TSB), and taurine (Tau). The inductively coupled plasma-mass spectrometer (ICP-MS) results demonstrated that the silver concentration of Tau-Ag was the highest among the four matrixes. The Tau-Ag was also observed to have 87.35% silver ions in its X-ray photoelectron spectrometer (XPS) spectra. The micrograph of transmission electron microscope (TEM) displayed a uniform distribution of silver nanoparticles, which was confined in a smaller size compared to that in TSB-Ag. Moreover, the peak shifts observed in the Fourier-transform infrared spectrometer (FTIR) spectrum implied that the -SO32− and -NH groups in taurine may interact with silver. A low cytotoxicity was noted for Tau-Ag, with approximately 70% of cells surviving at 0.63 mg/mL. Compared to the other three matrix-induced silver agents, Tau-Ag represented a better antibacterial effect against methicillin-resistant Staphylococcus aureus, with a minimum inhibitory concentration (MIC) value of 0.63 mg/mL and a postponed growth of 0.31 mg/mL observed. Further antibacterial examinations illustrated the presence of remarkable antibacterial activities against vancomycin-resistant Enterococcus feacium, carbapenem-resistant Klebsiella pneumoniae, carbapenem-resistant Acinetobacter baumannii, and carbapenem-resistant Pseudomonas aeruginosa. Given our observations and multiple bioactive functions of taurine (prevent patients from inflammation and oxidative-stress injuries), we anticipate that taurine matrix-induced silver ions would be a biomedical material with a high potential for combatting drug-resistant ESKAPE pathogens.
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9
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Zhou X, Cao Y, Zhou X, Xu L, Zhang D, Wang C, Chu F, Qian T. Nanosensors Based on Structural Memory Carbon Nanodots for Ag + Fluorescence Determination. Nanomaterials (Basel) 2021; 11:2687. [PMID: 34685130 DOI: 10.3390/nano11102687] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 10/05/2021] [Accepted: 10/07/2021] [Indexed: 11/17/2022]
Abstract
Ag+ pollution is of great harm to the human body and environmental biology. Therefore, there is an urgent need to develop inexpensive and accurate detection methods. Herein, lignin-derived structural memory carbon nanodots (CSM-dots) with outstanding fluorescence properties were fabricated via a green method. The mild preparation process allowed the CSM-dots to remain plentiful phenol, hydroxyl, and methoxy groups, which have a specific interaction with Ag+ through the reduction of silver ions. Further, the sulfur atoms doped on CSM-dots provided more active sites on their surface and the strong interaction with Ag nanoparticles. The CSM-dots can specifically bind Ag+, accompanied by a remarkable fluorescence quenching response. This “turn-off” fluorescence behavior was used for Ag+ determination in a linear range of 5–290 μM with the detection limit as low as 500 nM. Furthermore, findings showed that this sensing nano-platform was successfully used for Ag+ determination in real samples and intracellular imaging, showing great potential in biological and environmental monitoring applications.
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10
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Misirli GM, Sridharan K, Abrantes SMP. A review on nanostructured silver as a basic ingredient in medicine: physicochemical parameters and characterization. Beilstein J Nanotechnol 2021; 12:440-461. [PMID: 34104622 PMCID: PMC8144915 DOI: 10.3762/bjnano.12.36] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Accepted: 04/30/2021] [Indexed: 05/07/2023]
Abstract
Recent studies with silver nanoparticles (AgNPs) and the history of silver metal as a broad-spectrum bactericidal and virucidal agent, places silver as one of the future biocidal candidates in the field of nanomedicine to eliminate bacteria and viruses, especially multidrug resistant ones. In this review, we have described the various morphologies of AgNPs and correlated the enhanced bactericidal activity with their prominent {111} facets. In addition to prioritizing the characterization we have also discussed the importance of quantifying AgNPs and silver ion content (Ag+) and their different mechanisms at the chemical, biological, pharmacological, and toxicological levels. The mechanism of action of AgNPs against various bacteria and viruses including the SARS-CoV-2 was analyzed in order to understand its effectiveness as an antimicrobial agent with therapeutic efficacy and low toxicity. Further, there is the need to characterize AgNPs and quantify the content of free Ag+ for the implementation of new systematic studies of this promising agent in nanomedicine and in clinical practice.
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Affiliation(s)
- Gabriel M Misirli
- Physical Chemistry Laboratory, Bio-Manguinhos, Oswaldo Cruz Foundation (FIOCRUZ), Av. Brasil, 4365, Rio de Janeiro, RJ, Brazil
| | - Kishore Sridharan
- Department of Nanoscience and Technology, School of Chemical and Physical Sciences, University of Calicut, P.O. Thenhipalam 673635, Kerala, India
| | - Shirley M P Abrantes
- National Institute for Quality Control in Health, Oswaldo Cruz Foundation (INCQS, FIOCRUZ), Rio de Janeiro, RJ, Brazil
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11
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Tseng KH, Chung MY, Chiu JL, Tseng CH, Liu CY. A Study of Nanosilver Colloid Prepared by Electrical Spark Discharge Method and Its Antifungal Control Benefits. Micromachines (Basel) 2021; 12:503. [PMID: 33946357 PMCID: PMC8145165 DOI: 10.3390/mi12050503] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Revised: 04/28/2021] [Accepted: 04/29/2021] [Indexed: 01/30/2023]
Abstract
This is a study of an antimicrobial test, including yeast, Aspergillus Niger, and Aspergillus Flavus, on a nanosilver colloid solution. The antibiosis is compared with a standard silver ion solution at the same concentration as in the experimental process. This study proved that the nanosilver colloid prepared by the electrical spark discharge method (ESDM) is free of any chemical additives, has a microbial control effect, and that the effect is much better than the Ag+ standard solution at the same concentration. 3M Count Plate (YM) is used to test and observe the colony counts. The microbial control test for yeast, Aspergillus Niger, and Aspergillus Flavus is implemented in the nanosilver colloid. In addition to Aspergillus flavus, an Ag+ concentration of 16 ppm is enough to inhibit the growth of the samples. At the same concentration, the nanosilver colloid has a much better microbial control effect than the Ag+ standard solution, which may be because the nanoparticle can release Ag+ continuously, so the solution using the ESDM has a more significant microbial control effect.
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Affiliation(s)
- Kuo-Hsiung Tseng
- Department of Electrical Engineering, National Taipei University of Technology, Taipei 10608, Taiwan; (M.-Y.C.); (J.-L.C.)
| | - Meng-Yun Chung
- Department of Electrical Engineering, National Taipei University of Technology, Taipei 10608, Taiwan; (M.-Y.C.); (J.-L.C.)
| | - Juei-Long Chiu
- Department of Electrical Engineering, National Taipei University of Technology, Taipei 10608, Taiwan; (M.-Y.C.); (J.-L.C.)
- Business Planning Development Department, Panasonic Eco Solution Sales Taiwan Co., Ltd., Taipei 10608, Taiwan
| | - Chao-Heng Tseng
- Institute of Environmental Engineering and Management, National Taipei University of Technology, Taipei 10608, Taiwan; (C.-H.T.); (C.-Y.L.)
| | - Chao-Yun Liu
- Institute of Environmental Engineering and Management, National Taipei University of Technology, Taipei 10608, Taiwan; (C.-H.T.); (C.-Y.L.)
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12
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Memon R, Memon AA, Sherazi STH, Sirajuddin S, Balouch A, Shah MR, Mahesar SA, Rajar K, Agheem MH. Application of synthesized copper nanoparticles using aqueous extract ofZiziphus mauritiana L. leaves as a colorimetric sensor for the detection of Ag . Turk J Chem 2021; 44:1376-1385. [PMID: 33488237 PMCID: PMC7754729 DOI: 10.3906/kim-2001-51] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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: 01/22/2020] [Accepted: 07/27/2020] [Indexed: 11/11/2022] Open
Abstract
The presented work demonstrates the preparation of copper nanoparticles (CuNPs) via aqueous leaves extract of
Ziziphus mauritiana
L. (
Zm
) using hydrazine as a reducing agent. Various parameters such as volume of extract, concentration of hydrazine hydrate, concentration of copper chloride, and pH of the solution were optimized to obtain
Ziziphus mauritiana
L. leaves extract derived copper nanoparticles (
Zm
-CuNPs). Brownish red color was initial indication of the formation of
Zm
-CuNPs while it was confirmed by surface plasmon resonance (SPR) band at wavelength of 584 nm using ultraviolet-visible (UV-vis) spectroscopy. Synthesized
Zm
-CuNPs were characterized by Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), atomic force microscopy (AFM), and X-ray diffractometry (XRD). AFM images showed that the particle size of
Zm
-CuNPs was from 7 to 17 nm with an average size of 11.3 nm. Fabricated sensor (
Zm
-CuNPs) were used as a colorimetric sensor for the detection of Ag
+
at a linear range between 0.67 × 10
-6
– 9.3 × 10
-6
with R
2
value of 0.992. For real water samples, limit of quantification (LOQ) and limit of detection (LOD) for Ag
+
was found to be 330 × 10
-9
and 100 × 10
-9
, respectively.
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Affiliation(s)
- Roomia Memon
- National Centre of Excellence in Analytical Chemistry, University of Sindh, Jamshoro Pakistan
| | - Ayaz Ali Memon
- National Centre of Excellence in Analytical Chemistry, University of Sindh, Jamshoro Pakistan
| | | | - Sirajuddin Sirajuddin
- International Center for Chemical and Biological Sciences, HEJ Research Institute of Chemistry, University of Karachi, Sindh Pakistan
| | - Aamna Balouch
- National Centre of Excellence in Analytical Chemistry, University of Sindh, Jamshoro Pakistan
| | - Muhammad Raza Shah
- International Center for Chemical and Biological Sciences, HEJ Research Institute of Chemistry, University of Karachi, Sindh Pakistan
| | - Sarfaraz Ahmed Mahesar
- National Centre of Excellence in Analytical Chemistry, University of Sindh, Jamshoro Pakistan
| | - Kausar Rajar
- National Centre of Excellence in Analytical Chemistry, University of Sindh, Jamshoro Pakistan
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13
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Ueda Y, Miyazaki M, Mashima K, Takagi S, Hara S, Kamimura H, Jimi S. The Effects of Silver Sulfadiazine on Methicillin-Resistant Staphylococcus aureus Biofilms. Microorganisms 2020; 8:E1551. [PMID: 33050001 DOI: 10.3390/microorganisms8101551] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 10/05/2020] [Accepted: 10/05/2020] [Indexed: 11/16/2022] Open
Abstract
Methicillin-resistant Staphylococcus aureus (MRSA), the most commonly detected drug-resistant microbe in hospitals, adheres to substrates and forms biofilms that are resistant to immunological responses and antimicrobial drugs. Currently, there is a need to develop alternative approaches for treating infections caused by biofilms to prevent delays in wound healing. Silver has long been used as a disinfectant, which is non-specific and has relatively low cytotoxicity. Silver sulfadiazine (SSD) is a chemical complex clinically used for the prevention of wound infections after injury. However, its effects on biofilms are still unclear. In this study, we aimed to analyze the mechanisms underlying SSD action on biofilms formed by MRSA. The antibacterial effects of SSD were a result of silver ions and not sulfadiazine. Ionized silver from SSD in culture media was lower than that from silver nitrate; however, SSD, rather than silver nitrate, eradicated mature biofilms by bacterial killing. In SSD, sulfadiazine selectively bound to biofilms, and silver ions were then liberated. Consequently, the addition of an ion-chelator reduced the bactericidal effects of SSD on biofilms. These results indicate that SSD is an effective compound for the eradication of biofilms; thus, SSD should be used for the removal of biofilms formed on wounds.
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14
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Wang P, Wang J, Xie Z, Zhou J, Lu Q, Zhao Y, Dong C, Zou L. Depletion of multidrug-resistant uropathogenic Escherichia coli BC1 by ebselen and silver ion. J Cell Mol Med 2020; 24:13139-13150. [PMID: 32975381 PMCID: PMC7701569 DOI: 10.1111/jcmm.15920] [Citation(s) in RCA: 8] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 08/19/2020] [Accepted: 09/07/2020] [Indexed: 12/18/2022] Open
Abstract
Ebselen, an organo‐selenium compound with well‐characterized toxicology and pharmacology, recently exhibited potent antibacterial activity against glutathione (GSH)‐negative bacteria by disrupting redox homeostasis. In this paper, we show that ebselen and silver ion in combination exert strong bactericidal activity against multidrug‐resistant (MDR) uropathogenic Escherichia coli (UPEC) BC1, a model MDR GSH‐positive bacterium. The mechanisms were found to involve consumption of total intracellular GSH and inhibition of thioredoxin reductase activity, which was highly related to reactive oxygen species up‐regulation. Furthermore, the therapeutic efficacy of ebselen and silver ion against UPEC‐induced cystitis was assessed in a mouse model. Treatment with ebselen and silver ion significantly reduced bacterial loads, down‐regulated the expression levels of tumour necrosis factor‐α (TNF‐α) and interferon‐γ (IFN‐γ) on‐site and decreased white/red blood cell counts in mild cystitis model mice, which demonstrated the anti‐inflammatory property of these agents. In addition, ebselen and silver ion also exhibited significantly high protective ability (100%) against acute cystitis infections. These results together may lay the foundation for further analysis and development of ebselen and silver ion as antibacterial agents for treatment of MDR UPEC infections.
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Affiliation(s)
- Peng Wang
- The First College of Clinical Medical Science, China Three Gorges University, Yichang, Hubei, China.,The Institute of Infection and Inflammation, Medical College, China Three Gorges University, Yichang, Hubei, China.,Central Laboratory, The People's Hospital of China Three Gorges University, Yichang, Hubei, China
| | - Jun Wang
- The Institute of Infection and Inflammation, Medical College, China Three Gorges University, Yichang, Hubei, China.,Central Laboratory, The People's Hospital of China Three Gorges University, Yichang, Hubei, China
| | - Zonglan Xie
- The First College of Clinical Medical Science, China Three Gorges University, Yichang, Hubei, China
| | - Jingxuan Zhou
- The Institute of Infection and Inflammation, Medical College, China Three Gorges University, Yichang, Hubei, China.,Central Laboratory, The People's Hospital of China Three Gorges University, Yichang, Hubei, China
| | - Qianqian Lu
- The Institute of Infection and Inflammation, Medical College, China Three Gorges University, Yichang, Hubei, China.,Central Laboratory, The People's Hospital of China Three Gorges University, Yichang, Hubei, China
| | - Ying Zhao
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing, China
| | - Chuanjiang Dong
- The First College of Clinical Medical Science, China Three Gorges University, Yichang, Hubei, China
| | - Lili Zou
- The First College of Clinical Medical Science, China Three Gorges University, Yichang, Hubei, China.,The Institute of Infection and Inflammation, Medical College, China Three Gorges University, Yichang, Hubei, China.,Central Laboratory, The People's Hospital of China Three Gorges University, Yichang, Hubei, China
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15
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Abstract
The nanopore-based technique is a useful tool for single-molecule sensing and characterization. In this work, we have developed a new DNA-functionalized gold-modified nanopore, and analytes can induce the conformational switch of i-motif DNA formed on the inner surface of the nanopore. i-Motif DNA structure can be formed in the presence of silver ions (Ag+), which will result in the change in surface charge and structure of the nanopore tip and ion current rectification (ICR) ratio. The i-motif DNA structure on nanopore surface will be destroyed after the addition of glutathione (GSH) due to the strong interaction of Ag-S bond, which results in the recovery of surface charge, steric hindrance, and ICR ratio. This analyte-triggered conformational switch of i-motif DNA can help us deeply understand the DNA technology inside single nanopore and will benefit the possible applications in an ultrasensitive detection and biological/chemical analysis.
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Affiliation(s)
- Dandan Zhao
- Anhui Key Laboratory of Chemo/Biosensing, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P. R. China
| | - Haoran Tang
- Anhui Key Laboratory of Chemo/Biosensing, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P. R. China
| | - Hao Wang
- Anhui Key Laboratory of Chemo/Biosensing, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P. R. China
| | - Cheng Yang
- Anhui Key Laboratory of Chemo/Biosensing, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P. R. China
| | - Yongxin Li
- Anhui Key Laboratory of Chemo/Biosensing, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P. R. China
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16
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Baek MJ, Son J, Park J, Seol Y, Sung B, Kim YJ. Quantitative prediction of mixture toxicity of AgNO 3 and ZnO nanoparticles on Daphnia magna. Sci Technol Adv Mater 2020; 21:333-345. [PMID: 32939159 PMCID: PMC7476544 DOI: 10.1080/14686996.2020.1766343] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Once metal-based engineered nanoparticles (NPs) are released into the aquatic environment, they are expected to interact with other existing co-contaminants. A knowledge gap exists as to how the interaction of NPs with other co-contaminants occurs. Here we selected ZnO NPs among various NPs, with Ag ion existing as a contaminant in the aquatic environment by Ag NPs widely used. A novel modeling strategy was demonstrated enabling quantitative and predictive evaluation of the aqueous mixture nanotoxicity. Individual and binary mixture toxicity tests of ZnO NPs and silver (as AgNO3) on Daphnia magna were conducted and compared to determine whether the presence of Ag ions affects the toxicity of ZnO NPs. Binary mixture toxicity was evaluated based on the concentration addition (CA) and independent action models. The CA dose-ratio dependent model was found to be the model of best fit for describing the pattern of mixture toxicity. The MIX I and MIX III suspensions (higher ratios of ZnO NPs to AgNO3) showed a synergism, whereas the MIX II suspension (lower ratio of ZnO NPs to AgNO3) showed an antagonism. The synergistic mixture toxicity at higher ratios of ZnO NPs to AgNO3 was caused by either the physiological or metabolic disturbance induced by the excessive ionic Zn or increased transport and accumulation in D. magna via the formation of complex of ionic Ag with ZnO NPs. Therefore, the toxicity level contributed via their aggregation and physicochemical properties and the dissolved ions played a crucial role in the mixture toxicities of the NPs.
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Affiliation(s)
- Min Jeong Baek
- KIST Europe Forschungsgesellschaft mbH, Saarbrücken, Germany
| | - Jino Son
- Ojeong Ecoresilience Institute, Korea University, Seoul, Republic of Korea
| | - Jayoung Park
- KIST Europe Forschungsgesellschaft mbH, Saarbrücken, Germany
| | - Yohan Seol
- KIST Europe Forschungsgesellschaft mbH, Saarbrücken, Germany
- Division of Energy & Environment Technology, University of Science & Technology, Daejeon, Republic of Korea
| | - Baeckkyoung Sung
- KIST Europe Forschungsgesellschaft mbH, Saarbrücken, Germany
- Division of Energy & Environment Technology, University of Science & Technology, Daejeon, Republic of Korea
| | - Young Jun Kim
- KIST Europe Forschungsgesellschaft mbH, Saarbrücken, Germany
- Division of Energy & Environment Technology, University of Science & Technology, Daejeon, Republic of Korea
- CONTACT Young Jun Kim Division of Energy & Environment Technology, University of Science & Technology, 34113Daejeon, Republic of Korea
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17
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Hamida RS, Ali MA, Goda DA, Khalil MI, Al-Zaban MI. Novel Biogenic Silver Nanoparticle-Induced Reactive Oxygen Species Inhibit the Biofilm Formation and Virulence Activities of Methicillin-Resistant Staphylococcus aureus (MRSA) Strain. Front Bioeng Biotechnol 2020; 8:433. [PMID: 32548095 PMCID: PMC7270459 DOI: 10.3389/fbioe.2020.00433] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [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: 02/07/2020] [Accepted: 04/15/2020] [Indexed: 12/20/2022] Open
Abstract
Emerging antibiotic-resistant bacteria result in increased mortality and have negative economic impacts. It is necessary to discover new strategies to create alternative antibacterial agents that suppress the bacterial resistance mechanism and limit the spread of serious infectious bacterial diseases. Silver nanoparticles may represent a new medicinal agents as alternative antibiotics affect different bacterial mechanisms such as virulence and resistance. In addition to that of silver nitrate (AgNO3) and ampicillin, for the first time, the inhibitory effect of silver nanoparticles synthesized using Desertifilum sp. (D-SNPs) was evaluated against five pathogenic bacteria using the agar well diffusion method. Also, the influence of D-SNPs and AgNO3 on bacterial antioxidant and metabolic activities was studied. The antibacterial activity of D-SNPs and AgNO3 against methicillin-resistant Staphylococcus aureus (MRSA) strains was studied at the morphological and molecular level. D-SNPs and AgNO3 have the ability to inhibit the growth of the five bacterial strains and resulted in an imbalance in the CAT, GSH, GPx and ATPase levels. MRSA treated with D-SNPs and AgNO3 showed different morphological changes such as apoptotic bodies formation and cell wall damage. Moreover, both caused genotoxicity and denaturation of MRSA cellular proteins. Additionally, TEM micrographs showed the distribution of SNPs synthesized by MRSA. This result shows the ability of MRSA to reduce silver nitrate into silver nanoparticles. These data indicate that D-SNPs may be a significant alternative antibacterial agent against different bacteria, especially MDR bacteria, by targeting the virulence mechanism and biofilm formation, leading to bacterial death.
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Affiliation(s)
- Reham Samir Hamida
- Molecular Biology Unit, Department of Zoology, Faculty of Science, Alexandria University, Alexandria, Egypt
| | - Mohamed Abdelaal Ali
- Biotechnology Unit, Department of Plant Production, College of Food and Agriculture Science, King Saud University, Riyadh, Saudi Arabia
| | - Doaa A Goda
- Bioprocess Development Department, Genetic Engineering and Biotechnology Research Institute (GEBRI), City of Scientific Research and Technological Applications (SRTA-City), Alexandria, Egypt
| | - Mahmoud Ibrahim Khalil
- Molecular Biology Unit, Department of Zoology, Faculty of Science, Alexandria University, Alexandria, Egypt.,Department of Biological Sciences, Faculty of Science, Beirut Arab University, Beirut, Lebanon
| | - Mayasar Ibrahim Al-Zaban
- Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia
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18
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Gutiérrez MS, López KA, Morey J, Piña MN. Introducing Selectivity on Carbonaceous Material: Removing Noble Salts, Au 3+, and Ag + from Aqueous Media by Nanodiamonds Functionalized with Squaramides. Materials (Basel) 2020; 13:E1086. [PMID: 32121439 PMCID: PMC7084574 DOI: 10.3390/ma13051086] [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] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 02/25/2020] [Accepted: 02/25/2020] [Indexed: 06/10/2023]
Abstract
Nanodiamonds coated with dopamine-squaramide compounds have been prepared by a calcination/esterification synthetic process, which improves the efficiency of this carbonaceous material with respect to non-functionalized nanodiamonds. The modified nanodiamonds show excellent selective coordination of Ag+ and Au3+ cations in a Cd2+, Co2+, Cr3+, Cu2+, Pb2+, and Zn2+ mixture in water. The coordination capacity of the carbonyl squaramide groups with the silver and gold cation is based on purely electrostatic cation-dipole interactions. Overall, it is demonstrated that the conjunction between the nanodiamonds and the organic receptor improves the selectivity of the material toward noble cations.
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Affiliation(s)
| | | | - Jeroni Morey
- Department of Chemistry, University of the Balearic Islands, Cra. de Valldemossa, Km. 7.5, 07122 Palma de Mallorca, Balearic Islands, Spain; (M.S.G.); (K.A.L.)
| | - M. Nieves Piña
- Department of Chemistry, University of the Balearic Islands, Cra. de Valldemossa, Km. 7.5, 07122 Palma de Mallorca, Balearic Islands, Spain; (M.S.G.); (K.A.L.)
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19
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Xiong Y, Wang Y, Han X, Ma Y, Zhu HF, Long Y, Chen S. Nuclear fast red-based colorimetric sensors for sensitive and selective detection of Ag ions. LUMINESCENCE 2019; 34:724-730. [PMID: 31245914 DOI: 10.1002/bio.3666] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2019] [Revised: 05/08/2019] [Accepted: 05/14/2019] [Indexed: 11/10/2022]
Abstract
The reduction of nuclear fast red (NFR) stain by sodium tetrahydroboron was catalyzed in the presence of silver ions (Ag+ ). The fluorescence properties of reduced NFR differed from that of NFR. The product showed fluorescence emission at 480 nm with excitation at 369 nm. Furthermore, the fluorescence intensity of the mixture increased strongly in the presence of Ag+ and Britton-Robinson buffer at pH 4.78. There was a good linear relationship between increased fluorescence intensity (ΔI) and Ag+ concentration in the range 5.0 × 10-9 to 5.0 × 10-8 M. The correlation coefficient was 0.998, and the detection limit (3σ/k) was 1.5 × 10-9 M. The colour of the reaction system changed with variation in Ag+ concentration over a wide range. Based on the colour change, a visual semiquantitative detection method for recognition and sensing of Ag+ was developed for the range 1.0 × 10-8 to 5.0 × 10-4 M, with an indicator that was visible to the naked eye. Therefore, a sensitive, simple method for determination of Ag+ was developed. Optimum conditions for Ag+ detection, the effect of other ions and the analytical application of Ag+ detection of synthesized sample were investigated.
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Affiliation(s)
- Yuan Xiong
- Hunan Provincial Key Laboratory of Controllable Preparation and Functional Application of Fine Polymers, Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education, Hunan Provincial Key Laboratory of Advanced Materials for New Energy Storage and Conversion, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, China
| | - Yi Wang
- Hunan Provincial Key Laboratory of Controllable Preparation and Functional Application of Fine Polymers, Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education, Hunan Provincial Key Laboratory of Advanced Materials for New Energy Storage and Conversion, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, China
| | - Xue Han
- Hunan Provincial Key Laboratory of Controllable Preparation and Functional Application of Fine Polymers, Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education, Hunan Provincial Key Laboratory of Advanced Materials for New Energy Storage and Conversion, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, China
| | - Yao Ma
- Hunan Provincial Key Laboratory of Controllable Preparation and Functional Application of Fine Polymers, Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education, Hunan Provincial Key Laboratory of Advanced Materials for New Energy Storage and Conversion, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, China
| | - Han Fang Zhu
- Hunan Provincial Key Laboratory of Controllable Preparation and Functional Application of Fine Polymers, Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education, Hunan Provincial Key Laboratory of Advanced Materials for New Energy Storage and Conversion, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, China
| | - YunFei Long
- Hunan Provincial Key Laboratory of Controllable Preparation and Functional Application of Fine Polymers, Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education, Hunan Provincial Key Laboratory of Advanced Materials for New Energy Storage and Conversion, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, China
| | - Shu Chen
- Hunan Provincial Key Laboratory of Controllable Preparation and Functional Application of Fine Polymers, Key Laboratory of Theoretical Organic Chemistry and Function Molecule, Ministry of Education, Hunan Provincial Key Laboratory of Advanced Materials for New Energy Storage and Conversion, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, China
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20
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Jiao Y, Gao Y, Meng Y, Lu W, Liu Y, Han H, Shuang S, Li L, Dong C. One-Step Synthesis of Label-Free Ratiometric Fluorescence Carbon Dots for the Detection of Silver Ions and Glutathione and Cellular Imaging Applications. ACS Appl Mater Interfaces 2019; 11:16822-16829. [PMID: 30977357 DOI: 10.1021/acsami.9b01319] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The construction of ratiometric fluorescence assay has displayed fantastic advantages in improving semi-quantitative visualization capability by presenting successive color changes. Herein, long-wavelength emission nitrogen-doped carbon dots (N-CDs) were developed for intrinsic ratiometric detection of silver ions (Ag+) and glutathione (GSH), accompanied by visualization fluorescence variation of orange and green. The label-free N-CDs were favorably obtained through one-step hydrothermal synthesis and displayed single long-wavelength emission at 618 nm under the excitation wavelength of 478 nm. Interestingly, a ratio rising peak emerges at 532 nm and the emission at 618 nm decreases with the introduction of Ag+, which exhibits ratiometric fluorescence emission characteristics ( I618nm/ I532nm) in the range of 0-140 μM with significant fluorescence varying from orange to green. Furthermore, the fluorescence of CDs@Ag(I) can be effectively ratiometric recovered by virtue of a specific reaction of GSH with Ag+, which is accompanied by the fluorescence of the solution returning from green to orange. In addition, the N-CDs hold excellent biocompatibility which can be implemented as the visualization biosensing platform for intracellular determination of Ag+ and GSH, demonstrating that proposed N-CDs have tremendous potential in biological systems.
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Affiliation(s)
- Yuan Jiao
- Institute of Environmental Science, and School of Chemistry and Chemical Engineering , Shanxi University , Taiyuan 030006 , China
| | - Yifang Gao
- Institute of Environmental Science, and School of Chemistry and Chemical Engineering , Shanxi University , Taiyuan 030006 , China
| | - Yating Meng
- Institute of Environmental Science, and School of Chemistry and Chemical Engineering , Shanxi University , Taiyuan 030006 , China
| | - Wenjing Lu
- Institute of Environmental Science, and School of Chemistry and Chemical Engineering , Shanxi University , Taiyuan 030006 , China
| | - Yang Liu
- Institute of Environmental Science, and School of Chemistry and Chemical Engineering , Shanxi University , Taiyuan 030006 , China
| | - Hui Han
- Institute of Environmental Science, and School of Chemistry and Chemical Engineering , Shanxi University , Taiyuan 030006 , China
| | - Shaomin Shuang
- Institute of Environmental Science, and School of Chemistry and Chemical Engineering , Shanxi University , Taiyuan 030006 , China
| | - Lei Li
- Department of Chemical & Petroleum Engineering, Swanson School of Engineering , University of Pittsburgh , Pittsburgh , Pennsylvania 15261 , United States
| | - Chuan Dong
- Institute of Environmental Science, and School of Chemistry and Chemical Engineering , Shanxi University , Taiyuan 030006 , China
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21
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Abstract
Silver nanoparticles (AgNPs) can be synthesized from a variety of techniques including physical, chemical and biological routes. They have been widely used as nanomaterials for manufacturing cosmetic and healthcare products, antimicrobial textiles, wound dressings, antitumor drug carriers, etc. due to their excellent antimicrobial properties. Accordingly, AgNPs have gained access into our daily life, and the inevitable human exposure to these nanoparticles has raised concerns about their potential hazards to the environment, health, and safety in recent years. From in vitro cell cultivation tests, AgNPs have been reported to be toxic to several human cell lines including human bronchial epithelial cells, human umbilical vein endothelial cells, red blood cells, human peripheral blood mononuclear cells, immortal human keratinocytes, liver cells, etc. AgNPs induce a dose-, size- and time-dependent cytotoxicity, particularly for those with sizes ≤10 nm. Furthermore, AgNPs can cross the brain blood barrier of mice through the circulation system on the basis of in vivo animal tests. AgNPs tend to accumulate in mice organs such as liver, spleen, kidney and brain following intravenous, intraperitoneal, and intratracheal routes of administration. In this respect, AgNPs are considered a double-edged sword that can eliminate microorganisms but induce cytotoxicity in mammalian cells. This article provides a state-of-the-art review on the synthesis of AgNPs, and their applications in antimicrobial textile fabrics, food packaging films, and wound dressings. Particular attention is paid to the bactericidal activity and cytotoxic effect in mammalian cells.
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Affiliation(s)
- Chengzhu Liao
- Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China.
| | - Yuchao Li
- Department of Materials Science and Engineering, Liaocheng University, Liaocheng 252000, China.
| | - Sie Chin Tjong
- Department of Physics, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China.
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22
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Son YR, Kim MK, Ryu SG, Kim HS. Rapid Capture and Hydrolysis of a Sulfur Mustard Gas in Silver-Ion-Exchanged Zeolite Y. ACS Appl Mater Interfaces 2018; 10:40651-40660. [PMID: 30375849 DOI: 10.1021/acsami.8b15362] [Citation(s) in RCA: 8] [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] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Sulfur mustard gas, also called HD, is one of the main chemical warfare agents and has claimed thousands of lives and left many more contaminated. The development of functional materials to promptly capture and detoxify sulfur mustard within a few minutes is extremely important to save the lives of the affected people. This has motivated us to explore excellent detoxification systems that can be deployed in the field to rapidly capture and hydrolyze mustard gas in a short time. To that end, we present a silver-ion-exchanged zeolite Y [(Ag+) n@Y, n = 5, 13, 21, 32, 43, and 55] that can rapidly capture mustard gas and its simulant (2-chloroethyl ethyl sulfide, CEES) in ambient conditions to enable the prompt hydrolysis of the CEES captured in its nanopores. The capture and hydrolysis ability of Ag+@Y positively correlated with its number of Ag+ ions. In addition, 70% of CEES (2.5 μL in 1 mL) was captured by (Ag+)55@Y within 20 min at 25 °C in ambient conditions. Moreover, 100% CEES (2.5 μL in 1 mL aqueous ethanol cosolvent) was hydrolyzed in 1 min at 25 °C. The efficiency of Ag+@Y in capturing and hydrolyzing CEES as well as mustard gas is thus a system with high detoxification efficiency for this dangerous chemical warfare agent.
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Affiliation(s)
- Ye Rim Son
- Department of Chemistry , Pukyong National University , Busan 48513 , Republic of Korea
| | - Min-Kun Kim
- Agency for Defense Development , Yuseong P.O. Box 35, Daejeon 34186 , Republic of Korea
| | - Sam Gon Ryu
- Agency for Defense Development , Yuseong P.O. Box 35, Daejeon 34186 , Republic of Korea
| | - Hyun Sung Kim
- Department of Chemistry , Pukyong National University , Busan 48513 , Republic of Korea
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23
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Wang H, Liu Y, Liu G. Label-Free Biosensor Using a Silver Specific RNA-Cleaving DNAzyme Functionalized Single-Walled Carbon Nanotube for Silver Ion Determination. Nanomaterials (Basel) 2018; 8:nano8040258. [PMID: 29677143 PMCID: PMC5923588 DOI: 10.3390/nano8040258] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [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: 03/19/2018] [Revised: 04/17/2018] [Accepted: 04/18/2018] [Indexed: 11/16/2022]
Abstract
Silver, a very common heavy metal, has been employed in electronics, medicine, jewelry, and catalysis due to its excellent chemical and physical characteristics. Silver-containing wastes can cause environmental pollution, so it is vital to monitor the Ag(I) concentration. Here, a label-free biosensor was developed for the Ag(I) detection, which used single-walled carbon nanotubes/field effect transistor (SWNTs/FET) to functionalize with a specific DNAzyme, containing an Agzyme and a complementary strand DNA (CS-DNA) embedded an RNA-base. The CS-DNA was covalently immobilized on the SWNTs’ surface through peptide bonds, and then combined with the Agzyme. When Ag(I) was bound with the Agzyme, the CS-DNA can be cleaved at the RNA site efficiently. The cleaved DNAzyme induced a remarkable change in the electrical conductivity of SWNTs. The performances of DNAzyme/SWNTs/FET were investigated using different spectroscopy and electrochemical methods. Under the optimized parameters, DNAzyme/SWNTs/FET presented a high sensitivity and selectivity towards Ag(I), in which the linear response range is 10 pM to 106 pM and the limit of detection is 5 pM(S/N = 3). Additionally, the prepared biosensor was applied to measure the Ag(I) concentration in the water sample with good results.
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Affiliation(s)
- Hui Wang
- Key Laboratory of Modern Precision Agriculture System Integration Research, Ministry of Education and Key Laboratory of Agricultural Information Acquisition Technology, Ministry of Agriculture China Agricultural University, Beijing 100083, China.
| | - Yang Liu
- School of Electronic and Information Engineering, Xi'an Jiaotong University, Xi'an 710049, China.
| | - Gang Liu
- Key Laboratory of Modern Precision Agriculture System Integration Research, Ministry of Education and Key Laboratory of Agricultural Information Acquisition Technology, Ministry of Agriculture China Agricultural University, Beijing 100083, China.
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24
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Guo Z, Zheng Y, Xu H, Zheng B, Qiu W, Guo Z. Lateral flow test for visual detection of silver (I) based on cytosine-Ag(I)-cytosine interaction in C-rich oligonucleotides. Mikrochim Acta 2017; 184:4243-4250. [PMID: 29398725 PMCID: PMC5790153 DOI: 10.1007/s00604-017-2460-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2017] [Accepted: 08/14/2017] [Indexed: 10/19/2022]
Abstract
The authors describe an oligonucleotide-based lateral flow test for visual detection of Ag(I). The assay is based on cytosine-Ag(I)-cytosine [C-Ag(I)-C] coordination chemistry to capture gold nanoparticle (AuNP) tags in the test zone. A thiolated C-rich oligonucleotide probe was immobilized on the AuNPs via gold-thiol chemistry, and a biotinylated C-rich oligonucleotide probe was immobilized on the test zone. The AuNPs labelled with C-rich oligonucleotides are captured by Ag(I) ions in the test zone through the C-Ag(I)-C coordination. The resulting accumulation of AuNPs produces a readily visible red band in the test zone. Under optimized conditions, the test is capable of visually detecting 1.0 ppb of Ag(I) which is 50 times lower than the maximum allowable concentration as defined by the US Environmental Protection Agency for drinking water. Hence, the test is inexpensive and highly sensitive. It was applied to the detection of Ag(I) in spiked samples of tap water and river water. In our perception, the test is a particularly valuable tool in limited resource settings.
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Affiliation(s)
- Zebin Guo
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, PR China
- Key Laboratory of Predictive Microbiology and Chemical Residual Analysis, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, PR China
| | - Yafeng Zheng
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, PR China
- Key Laboratory of Predictive Microbiology and Chemical Residual Analysis, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, PR China
| | - Hui Xu
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, PR China
- Key Laboratory of Predictive Microbiology and Chemical Residual Analysis, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, PR China
| | - Baodong Zheng
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, PR China
| | - Wanwei Qiu
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, PR China
- Key Laboratory of Predictive Microbiology and Chemical Residual Analysis, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, PR China
| | - Zebin Guo
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, PR China
- Key Laboratory of Predictive Microbiology and Chemical Residual Analysis, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, PR China
- Department of Chemistry and Biochemistry, North Dakota State University, Fargo, ND, 58105, USA
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Baskaran P, Udduttula A, Uthirapathy V. Development and characterisation of novel Ce‐doped hydroxyapatite–Fe 3 O 4 nanocomposites and their in vitro biological evaluations for biomedical applications. IET Nanobiotechnol 2017; 12:138-146. [PMCID: PMC8676436 DOI: 10.1049/iet-nbt.2017.0029] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Revised: 09/04/2017] [Accepted: 09/12/2017] [Indexed: 07/29/2023] Open
Abstract
Hydroxyapatite (HAP: Ca10 (PO4)6 (OH)2) is extensively used in biomedical field because of its biocompatibility, osteoconductivity and non‐toxicity properties. However, HAP exhibits poor mechanical strength and bacterial restriction behavior. To overcome these drawbacks, various metal ions such as Ag+, Zn2+, Cu2+, Ti4+ and Ce4+/3+ are incorporated in HAP matrix to increase the mechanical and biological properties. Among these, Cerium (Ce) is selected as antibacterial agent due to its high thermal stability and its applications in dental fillings, bone healing and catheters. Fe3 O4 nanoparticles were used in hyperthermia treatment, magnetic fluid recordings and catalysis. In this present study, we have synthesized nanocomposites consisting of 1.25% Ce doped HAP with various concentrations of Fe3 O4 NPs as 90:10 (C‐1), 70:30 (C‐2) and 50:50 wt% (C‐3) using ball milling technique. The obtained Ce@HAP‐Fe3 O4 nanocomposites were characterized by ATR‐FTIR, XRD, VSM, SEM‐EDAX and TEM analysis. Further, the fabricated Ce@HAP‐Fe3 O4 nanocomposites were tested for its antibacterial activity towards Staphylococcus aureus (S. aureus) and Escherichia coli (E.coli), where C‐3 composites exhibit the excellent pathogen inhibition towards E.coli. In addition, the cytotoxicity evaluation on C‐3 nanocomposites by in vitro biocompatibility study using MG‐63 cells shows the prominent viable cell enhancement up to 400µg/mL concentrations.
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Affiliation(s)
- Priyadarshini Baskaran
- Department of ChemistrySchool of Advanced SciencesVIT UniversityVellore632 014Tamil NaduIndia
| | - Anjaneyulu Udduttula
- Department of ChemistrySchool of Advanced SciencesVIT UniversityVellore632 014Tamil NaduIndia
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Zia M, Gul S, Akhtar J, Haq IU, Abbasi BH, Hussain A, Naz S, Chaudhary MF. Green synthesis of silver nanoparticles from grape and tomato juices and evaluation of biological activities. IET Nanobiotechnol 2017; 11:193-199. [PMID: 28477003 PMCID: PMC8676460 DOI: 10.1049/iet-nbt.2015.0099] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [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: 11/12/2015] [Revised: 04/05/2016] [Accepted: 05/11/2016] [Indexed: 09/10/2023] Open
Abstract
The biosynthesis of silver nanoparticles (AgNPs) is substantial for its application in lots of fields. Tomato and grape fruit juices were used as a reducing and capping agents for the biosynthesis of AgNPs. Ultraviolet spectroscopic analysis offered peaks in the range of 396‒420 nm that indicate the production of AgNPs. Fourier transform infrared spectroscopy analysis revealed attachment of different functional groups with Ag ion in both tomato and grape fruit extracts NPs. The X‒ray diffraction analysis confirmed that the synthesised AgNPs have a face centred cubic confirmation. Scanning electron microscopy confirms the size of NPs that varies from 10 to 30 nm. The DPPH free radical scavenging assay, total antioxidant capacity, reducing power assay, total flavonoid contents and total phenolic contents determination confirmed that synthesised AgNPs are potent antioxidant agents; can be used as an effective scavenger of free radicals. Biosynthesised AgNPs also showed good antibacterial activity against Pseudomonas septica, Staphylococcus aureus, Micrococcus luteus, Enterobacter aerogenes, Bacillus subtilis and Salmonella typhi. Protein kinase inhibition activity showed a clear zone which indicates anticancerous potential of biosynthesised AgNPs. The efficacious bioactivities indicate that the tomato and grape derived AgNPs can be used efficiently in pharmaceutical and medical industries.
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Affiliation(s)
- Muhammad Zia
- Department of Biotechnology, Quaid-i-Azam University, Islamabad, Pakistan.
| | - Shadab Gul
- Department of Biotechnology, Quaid-i-Azam University, Islamabad, Pakistan
| | - Javed Akhtar
- Department of Physics, COMSATS Institute of Information Technology, Islamabad, Pakistan
| | - Ihsan Ul Haq
- Department of Pharmacy, Quaid-i-Azam University, Islamabad, Pakistan
| | | | - Ahsan Hussain
- Department of Biochemistry, Quaid-i-Azam University, Islamabad, Pakistan
| | - Sania Naz
- Preston Institute of NanoScience and Technology (PINSAT), Preston University, Islamabad, Pakistan
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Huang J, Cheng J, Yi J. Impact of silver nanoparticles on marine diatom Skeletonema costatum. J Appl Toxicol 2016; 36:1343-54. [PMID: 27080522 DOI: 10.1002/jat.3325] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2015] [Revised: 02/09/2016] [Accepted: 02/28/2016] [Indexed: 11/09/2022]
Abstract
When silver nanoparticles (AgNPs) are used commercially at a large scale, they infiltrate the environment at a rapid pace. However, the impact of large quantities of AgNPs on aquatic ecosystems is still largely unknown. In aquatic ecosystems, the phytoplanktons have a vital ecological function and, therefore, the potential impact of AgNPs on the microalgae community has elicited substantial concern. Therefore, in this study, the impacts of AgNPs on a marine diatom, the Skeletonema costatum, are investigated, with a focus on their photosynthesis and associated mechanisms. Exposure to AgNPs at a concentration of 0.5 mg l(-1) significantly induces excess intracellular reactive oxygen species (ROS, 122%) and reduces 28% of their cell viability. More importantly, exposure to AgNPs reduces the algal chlorophyll-a content. Scanning electron microscopy (SEM) was conducted, which revealed that AgNPs obstruct the light absorption of algae because they adhere to their surface. The maximum photochemical efficiency of photosystem II (Fv/Fm) demonstrates that exposure to AgNPs significantly inhibits the conversion of light energy into photosynthetic electron transport. Moreover, the genes of the photosystem II reaction center protein (D1) are significantly down-regulated (P < 0.05) upon exposure to 5 mg l(-1) AgNPs. These results suggest that the physical adhesion and effects of shading of AgNPs on algae might affect their light energy delivery system and damage the crucial protein function of PSII. The photosynthesis inhibition effect of AgNPs is largely different from Ag(+) . This study shows that AgNPs at higher concentrations might have serious consequences for the succession of the phytoplankton communities and aquatic ecosystem equilibrium. Copyright © 2016 John Wiley & Sons, Ltd.
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Affiliation(s)
- Jun Huang
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai, 200062, China.,City University of Hong Kong Shenzhen Research Institute, Shenzhen, 518057, China
| | - Jinping Cheng
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai, 200062, China.,City University of Hong Kong Shenzhen Research Institute, Shenzhen, 518057, China.,Environmental Science Programs, School of Science, Hong Kong University of Science and Technology, Clear Water bay, Kowloon, Hong Kong, China
| | - Jun Yi
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai, 200062, China.,City University of Hong Kong Shenzhen Research Institute, Shenzhen, 518057, China
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28
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Wang H, Li Y, Liu M, Gong M, Deng Z. Overcoming the Coupling Dilemma in DNA-Programmable Nanoparticle Assemblies by "Ag+ Soldering". Small 2015; 11:2247-2251. [PMID: 25641776 DOI: 10.1002/smll.201403108] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2014] [Revised: 11/20/2014] [Indexed: 06/04/2023]
Abstract
Strong coupling between nanoparticles is critical for facilitating charge and energy transfers. Despite the great success of DNA-programmable nanoparticle assemblies, the very weak interparticle coupling represents a key barrier to various applications. Here, an extremely simple, fast, and highly efficient process combining DNA-programming and molecular/ionic bonding is developed to address this challenge, which exhibits a seamless fusion with DNA nanotechnology.
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Affiliation(s)
- Huiqiao Wang
- CAS Key Laboratory of Soft Matter Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui, 230026, P.R. China
| | - Yulin Li
- CAS Key Laboratory of Soft Matter Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui, 230026, P.R. China
| | - Miao Liu
- CAS Key Laboratory of Soft Matter Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui, 230026, P.R. China
| | - Ming Gong
- Engineering and Materials Science Experiment Center, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui, 230026, P.R. China
| | - Zhaoxiang Deng
- CAS Key Laboratory of Soft Matter Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui, 230026, P.R. China
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29
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Ahn AJ, Ahn KS, Suh GH, Noh JH, Kim YH, Yoo MS, Kang SW, Shin SS. Efficacy of silver ions against Sacbrood virus infection in the Eastern honey bee Apis cerana. J Vet Sci 2015; 16:289-95. [PMID: 25797295 PMCID: PMC4588014 DOI: 10.4142/jvs.2015.16.3.289] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [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: 11/18/2014] [Accepted: 03/07/2015] [Indexed: 11/20/2022] Open
Abstract
Although silver is known to be a broad-spectrum biocidal agent, the effects of this metal against Sacbrood virus have not yet been investigated. In this study, we evaluated the efficacy of silver ions against natural Korean sacbrood virus (KSBV) infection of Apis (A.) cerana. Ten KSBV-infected colonies containing A. cerana with similar strength and activity were selected from an apiary located in Bosung-gun (Korea). Among these, five colonies were randomly assigned to the treatment group that was fed sugar syrup containing 0.2 mg/L silver ions. The other colonies were assigned to the untreated control group in which bees were given syrup without the silver ions. To assess the efficacy of the silver ions, colony strength, colony activity, and the number of dead larvae per hive were measured. During the experimental period, the test group maintained its strength and activity until day 32 while those of bees in the control group decreased sharply after day 8 to 16. Survival duration of the test group was significantly longer (40 days) than that of the control group (21 days). These results strongly indicated that silver ions are effective against KSBV infection in A. cerana.
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Affiliation(s)
- Ah-Jin Ahn
- Department of Parasitology, College of Veterinary Medicine, Chonnam National University, Gwangju 500-757, Korea
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30
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Zhao X, Toyooka T, Ibuki Y. Silver ions enhance UVB-induced phosphorylation of histone H2AX. Environ Mol Mutagen 2014; 55:556-565. [PMID: 24838775 DOI: 10.1002/em.21875] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2013] [Revised: 04/30/2014] [Accepted: 04/30/2014] [Indexed: 06/03/2023]
Abstract
Silver (Ag) is used in a wide range of industries including healthcare, food, cosmetics, and environmental industries due to its antibacterial properties. The rapidly expanding use of Ag has raised issues concerning its toxicity in humans. However, studies investigating the effects of Ag on humans are very limited, and the combined effects of Ag and other environmental factors have not yet been determined. Ultraviolet (UV) radiation in sunlight is the most prominent and ubiquitous physical stressor in our natural environment. In this study, we investigated the genotoxic potential of combined exposure to Ag(+) (AgNO3) and UVB in the human keratinocyte cell line, HaCaT, by measuring the generation of phosphorylated histone H2AX, which is currently attracting attention as a biomarker for the detection of genotoxic insults. We found that the generation of γ-H2AX was synergistically enhanced when cells were coexposed to Ag(+) and UVB. Furthermore, we showed that the enhanced generation of γ-H2AX could be attributed to the increased formation of UVB-induced cyclobutane pyrimidine dimers and (6-4) photoproducts. These lesions, if not repaired properly, are the major causal factor for skin carcinogenesis. Our results provide an important insight into influence of Ag on the genotoxic potency of sunlight.
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Affiliation(s)
- Xiaoxu Zhao
- Graduate Division of Nutritional and Environmental Sciences, University of Shizuoka, Shizuoka-Shi, Shizuoka, Japan
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31
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Tamai M, Matsushita S, Miyanohara H, Imuta N, Ikeda R, Kawai K, Nishi J, Sakamoto A, Shigihara T, Kanekura T. Antimicrobial effect of an ultrasonic levitation washer disinfector with silver electrolysis and ozone oxidation on methicillin-resistant Staphylococcus aureus. J Dermatol 2013; 40:1020-6. [PMID: 24304000 DOI: 10.1111/1346-8138.12327] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [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: 06/28/2013] [Accepted: 09/09/2013] [Indexed: 11/26/2022]
Abstract
Methicillin-resistant Staphylococcus aureus (MRSA) has rapidly emerged as a cause of severe and intractable skin infection. At present, there are no effective topical treatments, and infection or colonization by MRSA of the skin raises serious medical problems. We developed an ultrasonic levitation washer that generates silver ions (Ag(+)) and ozone (O3) to clean and sterilize medical devices. We report the effect of ultrasonic levitation (levitation) with Ag(+) and O3 on MRSA in vitro and in vivo. Antimicrobial effect against six MRSA strains of all agr types was examined under three in vitro conditions; cells floating in a water tank, cells infiltrating-, and cells forming a biofilm on an atelocollagen membrane. In the in vivo studies, we assayed the number of MRSA organisms that survived treatment on murine skin ulcers and evaluated the ulcer size. Levitation with Ag(+) dramatically decreased the survival of MRSA floating in a water tank. Levitation with Ag(+) and O3 significantly decreased the viability of MRSA that had infiltrated or formed a biofilm on atelocollagen membranes regardless of the level of biofilm production. In vivo studies showed that the number of MRSA on murine skin ulcers was significantly decreased when 15-min treatment was performed for 7 consecutive days and that the ulcer size was significantly decreased after the seventh treatment course. Levitation with Ag(+) and O3 may be a valuable tool for treating MRSA infestation of the skin and for accelerating wound healing.
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Affiliation(s)
- Mariko Tamai
- Department of Dermatology, Field of Sensory Organology, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
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Prasad RY, McGee JK, Killius MG, Suarez DA, Blackman CF, DeMarini DM, Simmons SO. Investigating oxidative stress and inflammatory responses elicited by silver nanoparticles using high-throughput reporter genes in HepG2 cells: effect of size, surface coating, and intracellular uptake. Toxicol In Vitro 2013; 27:2013-21. [PMID: 23872425 DOI: 10.1016/j.tiv.2013.07.005] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2013] [Revised: 06/17/2013] [Accepted: 07/06/2013] [Indexed: 11/17/2022]
Abstract
Silver nanoparticles (Ag NP) have been shown to generate reactive oxygen species; however, the association between physicochemical characteristics of nanoparticles and cellular stress responses elicited by exposure has not been elucidated. Here, we examined three key stress-responsive pathways activated by Nrf-2/ARE, NFκB, and AP1 during exposure to Ag NP of two distinct sizes (10 and 75 nm) and coatings (citrate and polyvinylpyrrolidone), as well as silver nitrate (AgNO3), and CeO2 nanoparticles. The in vitro assays assessed the cellular response in a battery of stable luciferase-reporter HepG2 cell lines. We further assessed the impact of Ag NP and AgNO3 exposure on cellular redox status by measuring glutathione depletion. Lastly, we determined intracellular Ag concentration by inductively coupled plasma mass spectroscopy (ICP-MS) and re-analyzed reporter-gene data using these values to estimate the relative potencies of the Ag NPs and AgNO3. Our results show activation of all three stress response pathways, with Nrf-2/ARE displaying the strongest response elicited by each Ag NP and AgNO3 evaluated here. The smaller (10-nm) Ag NPs were more potent than the larger (75-nm) Ag NPs in each stress-response pathway, and citrate-coated Ag NPs had higher intracellular silver concentrations compared with both PVP-coated Ag NP and AgNO3. The cellular stress response profiles after Ag NP exposure were similar to that of AgNO3, suggesting that the oxidative stress and inflammatory effects of Ag NP are likely due to the cytotoxicity of silver ions.
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Affiliation(s)
- Raju Y Prasad
- Integrated Systems Toxicology Division, United States Environmental Protection Agency, Research Triangle Park, NC 27711, USA
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Zhan D, Fan FRF, Bard AJ. The Kv channel blocker 4-aminopyridine enhances Ag+ uptake: a scanning electrochemical microscopy study of single living cells. Proc Natl Acad Sci U S A 2008; 105:12118-22. [PMID: 18719098 PMCID: PMC2527875 DOI: 10.1073/pnas.0805286105] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [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: 03/05/2008] [Indexed: 11/18/2022] Open
Abstract
We report that silver ion (Ag(+)) uptake is enhanced by 4-aminopyridine (4-AP), a well known voltage-sensitive potassium ion channel (K(v)) blocker. Both bacterial (Escherichia coli) and mammalian (3T3 fibroblast) cells were used as model systems. Ag(+) uptake was monitored with a scanning electrochemical microscope with an amperometric Ag(+) ion-selective electrode (Ag(+)-ISE) and the respiration rates of E. coli cells were measured by oxygen reduction at an ultramicroelectrode. The results showed that not only the amount but also the rate of silver uptake by the cells increased significantly when 4-AP was added to the solution. For fibroblasts, the Ag(+) uptake rate was 4.8 x 10(7) ions per cell per sec without 4-AP compared with 1.0 x 10(8) ions per cell per sec with 0.2 mM 4-AP. For E. coli cells, the uptake rate was 1.5 x 10(4) ions per cell per sec without 4-AP vs. 3.5 x 10(4) ions per cell per sec with 0.5 mM 4-AP and 5.9 x 10(4) ions per cell per sec with 1 mM 4-AP. Thus, 4-AP might be useful where silver is used as antimicrobial agent to speed its uptake.
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Affiliation(s)
- Dongping Zhan
- Department of Chemistry and Biochemistry, University of Texas, 1 University Station A5300, Austin, TX 78712-0165
| | - Fu-Ren F. Fan
- Department of Chemistry and Biochemistry, University of Texas, 1 University Station A5300, Austin, TX 78712-0165
| | - Allen. J. Bard
- Department of Chemistry and Biochemistry, University of Texas, 1 University Station A5300, Austin, TX 78712-0165
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