101
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Silver Nanoparticles for Conductive Inks: From Synthesis and Ink Formulation to Their Use in Printing Technologies. METALS 2022. [DOI: 10.3390/met12020234] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Currently, silver nanoparticles have attracted large interest in the photonics, electrics, analytical, and antimicrobial/biocidal fields due to their excellent optical, electrical, biological, and antibacterial properties. The versatility in generating different sizes, shapes, and surface morphologies results in a wide range of applications of silver nanoparticles in various industrial and health-related areas. In industrial applications, silver nanoparticles are used to produce conductive inks, which allows the construction of electronic devices on low-cost and flexible substrates by using various printing techniques. In order to achieve successful printed patterns, the necessary formulation and synthesis need to be engineered to fulfil the printing technique requirements. Additional sintering processes are typically further required to remove the added polymers, which are used to produce the desired adherence, viscosity, and reliable performance. This contribution presents a review of the synthesis of silver nanoparticles via different methods (chemical, physical and biological methods) and the application of silver nanoparticles under the electrical field. Formulation of silver inks and formation of conductive patterns by using different printing techniques (inkjet printing, screen printing and aerosol jet printing) are presented. Post-printing treatments are also discussed. A summary concerning outlooks and perspectives is presented at the end of this review.
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102
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Preparing Copper Nanoparticles and Flexible Copper Conductive Sheets. NANOMATERIALS 2022; 12:nano12030360. [PMID: 35159705 PMCID: PMC8840540 DOI: 10.3390/nano12030360] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 01/16/2022] [Accepted: 01/21/2022] [Indexed: 02/04/2023]
Abstract
Nanotechnology is used in a wide range of fields, including medicine, cosmetics, and new material development, and is one of the most popular technologies in the field of flexible electronic products. For the present work, the chemical reduction method with environmentally friendly reducing agents was used to synthesize copper nanoparticles (CuNPs) with good dispersibility. The CuNPs were characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), and ultraviolet–visible spectrophotometry (UV–vis). After the CuNPs were formed, the solvent, polymers, and additives were added to form copper ink. Finally, the prepared copper inks were applied to flexible polyethylene terephthalate (PET) substrate under low sintering temperature and the effects of sintering time and different concentrations of sintering agent on resistivity were investigated. The results show that the copper nanoparticles synthesized by secondary reduction were smaller, more uniform, and better dispersed than those formed by primary reduction. Ethylene glycol has reducing effects under high temperatures; therefore, the CuNPs formed using the mixed solvent were small and well dispersed. The copper ink was applied on the PET substrate, treated with a formic acid aqueous solution, and sintered at 130 °C for 60 min, and its resistivity was about 1.67 × 10−3 Ω cm. The proposed synthesizing method is expected to have potential applications in the flexible electronic products field.
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103
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Hosseini SM, Taheri M, Nouri F, Farmani A, Moez NM, Arabestani MR. Nano drug delivery in intracellular bacterial infection treatments. Biomed Pharmacother 2022; 146:112609. [PMID: 35062073 DOI: 10.1016/j.biopha.2021.112609] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 12/22/2021] [Accepted: 12/26/2021] [Indexed: 12/20/2022] Open
Abstract
The present work aimed to review the potential mechanisms used by macrophages to kill intracellular bacteria, their entrance to the cell, and mechanisms of escape of cellular immunity and applications of various nanoparticles. Since intracellular bacteria such as Mycobacterium and Brucella can survive in host cells and can resist the lethal power of macrophages, they can cause chronic disease or recur in 10-30% of cases in improved patients Nano drug-based therapeutics are promising tools for treating intracellular bacteria and preventing recurrence of the disease caused by these bacteria. In addition, among their unique features, we can mention the small size and the ability of these compounds to purposefully reach the target location.
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Affiliation(s)
- Seyed Mostafa Hosseini
- Department of Microbiology, School of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Mohammad Taheri
- Department of Microbiology, School of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Fatemeh Nouri
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Abbas Farmani
- Department of Nanobiotechnology, Faculty of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Narjes Morovati Moez
- Department of Microbiology, School of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Mohammad Reza Arabestani
- Department of Microbiology, School of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran.
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104
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Diaz C, Valenzuela ML, Laguna-Bercero MÁ. Solid-State Preparation of Metal and Metal Oxides Nanostructures and Their Application in Environmental Remediation. Int J Mol Sci 2022; 23:ijms23031093. [PMID: 35163017 PMCID: PMC8835339 DOI: 10.3390/ijms23031093] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2021] [Revised: 12/09/2021] [Accepted: 12/13/2021] [Indexed: 02/01/2023] Open
Abstract
Nanomaterials have attracted much attention over the last decades due to their very different properties compared to those of bulk equivalents, such as a large surface-to-volume ratio, the size-dependent optical, physical, and magnetic properties. A number of solution fabrication methods have been developed for the synthesis of metal and metal oxides nanoparticles, but few solid-state methods have been reported. The application of nanostructured materials to electronic solid-state devices or to high-temperature technology requires, however, adequate solid-state methods for obtaining nanostructured materials. In this review, we discuss some of the main current methods of obtaining nanomaterials in solid state, and also we summarize the obtaining of nanomaterials using a new general method in solid state. This new solid-state method to prepare metals and metallic oxides nanostructures start with the preparation of the macromolecular complexes chitosan·Xn and PS-co-4-PVP·MXn as precursors (X = anion accompanying the cationic metal, n = is the subscript, which indicates the number of anions in the formula of the metal salt and PS-co-4-PVP = poly(styrene-co-4-vinylpyridine)). Then, the solid-state pyrolysis under air and at 800 °C affords nanoparticles of M°, MxOy depending on the nature of the metal. Metallic nanoparticles are obtained for noble metals such as Au, while the respective metal oxide is obtained for transition, representative, and lanthanide metals. Size and morphology depend on the nature of the polymer as well as on the spacing of the metals within the polymeric chain. Noticeably in the case of TiO2, anatase or rutile phases can be tuned by the nature of the Ti salts coordinated in the macromolecular polymer. A mechanism for the formation of nanoparticles is outlined on the basis of TG/DSC data. Some applications such as photocatalytic degradation of methylene by different metal oxides obtained by the presented solid-state method are also described. A brief review of the main solid-state methods to prepare nanoparticles is also outlined in the introduction. Some challenges to further development of these materials and methods are finally discussed.
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Affiliation(s)
- Carlos Diaz
- Departamento de Química, Facultad de Ciencias, Universidad de Chile, Las Palmeras 3425, Ñuñoa, Casilla 653, Santiago 7800003, Chile
- Correspondence:
| | - Maria Luisa Valenzuela
- Instituto de Ciencias Químicas Aplicadas, Grupo de Investigación en Energía y Procesos Sustentables, Facultad de Ingeniería, Universidad Autónoma de Chile, Av. El Llano Subercaseaux 2801, Santiago 8900000, Chile;
| | - Miguel Á. Laguna-Bercero
- Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza C/Pedro Cerbuna 12, 50009 Zaragoza, Spain;
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105
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Zhang X, Dang D, Zheng L, Wu L, Wu Y, Li H, Yu Y. Effect of Ag Nanoparticles on Denitrification and Microbial Community in a Paddy Soil. Front Microbiol 2022; 12:785439. [PMID: 35003016 PMCID: PMC8727482 DOI: 10.3389/fmicb.2021.785439] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Accepted: 11/23/2021] [Indexed: 11/30/2022] Open
Abstract
The extensive application of Ag nanoparticles (AgNPs) in industry, agriculture, and food processing areas increases the possibility of its release and accumulation to agroecosystem, but the effects of AgNPs to denitrification and the microbial community in paddy ecosystems are still poorly studied. In this study, microcosmic simulation experiments were established to investigate the response of soil denitrification to different levels of AgNPs (i.e., 0.1, 1, 10, and 50 mg/kg) in a paddy soil. Real-time quantitative PCR and high-throughput sequencing were conducted to reveal the microbial mechanism of the nanometer effect. The results showed that, though 0.1–10 mg/kg AgNPs had no significant effects on denitrification rate and N2O emission rate compared to CK and bulk Ag treatments, 50 mg/kg AgNPs significantly stimulated more than 60% increase of denitrification rate and N2O emission rate on the 3rd day (P < 0.05). Real-time quantitative PCR revealed that 50 mg/kg AgNPs significantly decreased the abundance of 16S bacterial rRNA gene, nirS/nirK, cnorB, and nosZ genes, but it did not change the narG gene abundance. The correlation analysis further revealed that the cumulative N2O emission was positively correlated with the ratio of all the five tested denitrifying genes to bacterial 16S rRNA gene (P < 0.05), indicating that the tolerance of narG gene to AgNPs was the key factor of the increase in denitrification in the studied soil. High-throughput sequencing showed that only the 50-mg/kg-AgNP treatment significantly changed the microbial community composition compared to bulk Ag and CK treatments. The response of microbial phylotypes to AgNPs suggested that the most critical bacteria which drove the stimulation of 50 mg/kg AgNPs on N2O emission were Firmicutes and β-proteobacteria, such as Clotridiales, Burkholderiales, and Anaerolineales. This study revealed the effects of AgNPs to denitrification in a paddy ecosystem and could provide a scientific basis for understanding of the environmental and toxicological effects of Ag nanomaterials.
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Affiliation(s)
- Xiao Zhang
- Key Laboratory of Agrometeorology of Jiangsu Province, Nanjing University of Information Science and Technology, Nanjing, China
| | - Di Dang
- Key Laboratory of Agrometeorology of Jiangsu Province, Nanjing University of Information Science and Technology, Nanjing, China
| | - Lingsi Zheng
- Key Laboratory of Agrometeorology of Jiangsu Province, Nanjing University of Information Science and Technology, Nanjing, China
| | - Lingyu Wu
- Key Laboratory of Agrometeorology of Jiangsu Province, Nanjing University of Information Science and Technology, Nanjing, China
| | - Yu Wu
- Key Laboratory of Agrometeorology of Jiangsu Province, Nanjing University of Information Science and Technology, Nanjing, China
| | - Haoruo Li
- Key Laboratory of Agrometeorology of Jiangsu Province, Nanjing University of Information Science and Technology, Nanjing, China
| | - Yongjie Yu
- Key Laboratory of Agrometeorology of Jiangsu Province, Nanjing University of Information Science and Technology, Nanjing, China.,Key Laboratory of Karst Dynamics, MNR and Guangxi, Institute of Karst Geology, Chinese Academy of Geological Sciences, Guilin, China
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106
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Green Synthesis of Chitosan-Coated Silver Nanoparticle, Characterization, Antimicrobial Activities, and Cytotoxicity Analysis in Cancerous and Normal Cell Lines. J Inorg Organomet Polym Mater 2022. [DOI: 10.1007/s10904-021-02208-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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107
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Tarassoli Z, Najjar R, Amani A. One-pot biosynthesis of silver nanoparticles using green tea plant extract/rosemary oil and investigation of their antibacterial activity. INORG NANO-MET CHEM 2022. [DOI: 10.1080/24701556.2021.2025086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Zohreh Tarassoli
- Polymer Research Laboratory, Faculty of Chemistry, University of Tabriz, Tabriz, Iran
| | - Reza Najjar
- Polymer Research Laboratory, Faculty of Chemistry, University of Tabriz, Tabriz, Iran
| | - Amir Amani
- Natural Products and Medicinal Plants Research Center, North Khorasan University of Medical Sciences, Bojnurd, Iran
- Department of Medical Nanotechnology, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
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108
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Hong GB, Luo YH, Chuang KJ, Cheng HY, Chang KC, Ma CM. Facile Synthesis of Silver Nanoparticles and Preparation of Conductive Ink. NANOMATERIALS 2022; 12:nano12010171. [PMID: 35010121 PMCID: PMC8746659 DOI: 10.3390/nano12010171] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 12/03/2021] [Accepted: 12/10/2021] [Indexed: 02/04/2023]
Abstract
In the scientific industry, sustainable nanotechnology has attracted great attention and has been successful in facilitating solutions to challenges presented in various fields. For the present work, silver nanoparticles (AgNPs) were prepared using a chemical reduction synthesis method. Then, a low-temperature sintering process was deployed to obtain an Ag-conductive ink preparation which could be applied to a flexible substrate. The size and shape of the AgNPs were characterized by ultraviolet–visible spectrophotometry (UV-Vis) and transmission electron microscopy (TEM). The experiments indicated that the size and agglomeration of the AgNPs could be well controlled by varying the reaction time, reaction temperature, and pH value. The rate of nanoparticle generation was the highest when the reaction temperature was 100 °C within the 40 min reaction time, achieving the most satisfactorily dispersed nanoparticles and nanoballs with an average size of 60.25 nm at a pH value of 8. Moreover, the electrical resistivity of the obtained Ag-conductive ink is controllable, under the optimal sintering temperature and time (85 °C for 5 min), leading to an optimal electrical resistivity of 9.9 × 10−6 Ω cm. The results obtained in this study, considering AgNPs and Ag-conductive ink, may also be extended to other metals in future research.
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Affiliation(s)
- Gui Bing Hong
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei 10608, Taiwan; (G.B.H.); (Y.H.L.)
| | - Yi Hua Luo
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei 10608, Taiwan; (G.B.H.); (Y.H.L.)
| | - Kai Jen Chuang
- School of Public Health, College of Public Health and Nutrition, Taipei Medical University, Taipei 11490, Taiwan;
- Department of Public Health, School of Medicine, College of Medicine, Taipei Medical University, Taipei 11490, Taiwan
| | - Hsiu Yueh Cheng
- Department of Nursing, St. Mary’s Junior College of Medicine, Nursing and Management, Yi-Lan 26647, Taiwan; (H.Y.C.); (K.C.C.)
| | - Kai Chau Chang
- Department of Nursing, St. Mary’s Junior College of Medicine, Nursing and Management, Yi-Lan 26647, Taiwan; (H.Y.C.); (K.C.C.)
| | - Chih Ming Ma
- Department of Cosmetic Application and Management, St. Mary’s Junior College of Medicine, Nursing and Management, Yi-Lan 26647, Taiwan
- Correspondence: ; Tel.: +886-3-9897396
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109
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Green synthesis of silver nanoparticles using Diplazium esculentum extract: catalytic reduction of methylene blue and antibacterial activities. CHEMICAL PAPERS 2022. [DOI: 10.1007/s11696-021-01835-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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110
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Larder RR, Krumins E, Jacob PL, Kortsen K, Cavanagh R, Jiang L, Vuotto C, Francolini I, Tuck C, Taresco V, Howdle SM. Antimicrobial ‘inks’ for 3D printing: block copolymer-silver nanoparticle composites synthesised using supercritical CO 2. Polym Chem 2022. [DOI: 10.1039/d2py00398h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new synthetic methodology to produce polymer-AgNP composite microparticles using scCO2 is presented. These microparticle possessed long-lived antimicrobial activity and were tested for compatibility in the Laser Sintering 3D printing process.
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Affiliation(s)
- Ryan R. Larder
- School of Chemistry, The University of Nottingham, University Park, Nottingham, NG7 2RD, UK
| | - Eduards Krumins
- School of Chemistry, The University of Nottingham, University Park, Nottingham, NG7 2RD, UK
- Centre for Additive Manufacturing, Faculty of Engineering, University of Nottingham, Nottingham, NG7 2RD, UK
| | - Philippa L. Jacob
- School of Chemistry, The University of Nottingham, University Park, Nottingham, NG7 2RD, UK
| | - Kristoffer Kortsen
- School of Chemistry, The University of Nottingham, University Park, Nottingham, NG7 2RD, UK
| | - Robert Cavanagh
- School of Pharmacy, The University of Nottingham, University Park, Nottingham, NG7 2RD, UK
| | - Long Jiang
- School of Pharmacy, The University of Nottingham, University Park, Nottingham, NG7 2RD, UK
| | - Claudia Vuotto
- Microbial Biofilm Laboratory, IRCCS Fondazione Santa Lucia, 00143 Rome, Italy
| | | | - Christopher Tuck
- Centre for Additive Manufacturing, Faculty of Engineering, University of Nottingham, Nottingham, NG7 2RD, UK
| | - Vincenzo Taresco
- School of Chemistry, The University of Nottingham, University Park, Nottingham, NG7 2RD, UK
| | - Steven M. Howdle
- School of Chemistry, The University of Nottingham, University Park, Nottingham, NG7 2RD, UK
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111
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Recent advances on silver-based photocatalysis: Photocorrosion inhibition, visible-light responsivity enhancement, and charges separation acceleration. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2021.120194] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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112
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Chandan G, Pal S, Kashyap S, Siwal SS, Dhiman SK, Saini AK, Saini RV. Synthesis, characterization and anticancer activities of silver nanoparticles from the leaves of Datura stramonium L. NANOFABRICATION 2021. [DOI: 10.1515/nanofab-2020-0103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract
In recent years, a wide range of studies has pointed out the role of nanoparticles as reservoirs of therapeutics for several diseases, including cancer. Nowadays, cancer research is focused on the development of novel treatment approaches to fight this dreadful disorder. Based on the evidential research and applications of nanoparticles, it is expected that green synthesized nanoparticles may show a prominent role, especially in the biomedical field. The present work is centered on the preparation and characterization of silver nanoparticles (Ag-NPs) from the aqueous (AQ) extract and non-alkaloidal (NA) fraction of Datura stramonium leaves and to evaluate their anticancer potential against mammalian cell lines. The biogenic Ag-NPs are characterized by UV-vis spectra, FTIR DLS, UV-Vis, SEM, and TEM. SEM and TEM analysis reveals the spherical morphology of NPs. The Ag-NPs exhibit cytotoxicity against various mammalian cell lines (A549, HCT-116, PANC-1, SHSY5Y, and U87), which indicate that the AQ and NA based NPs are highly potent to cause cancer cell death. To the best of our knowledge, the present report, for the first time, describes the green synthesis of Ag-NPs from the NA fraction of the D. stramonium and provides pieces of evidence for its anticancer potential.
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Affiliation(s)
- Gourav Chandan
- Central Research Cell, MM Institute of Medical Sciences and Research , Maharishi Markandeshwar (Deemed to be University) , Mullana-Ambala , Haryana , India
| | - Soumya Pal
- Central Research Cell, MM Institute of Medical Sciences and Research , Maharishi Markandeshwar (Deemed to be University) , Mullana-Ambala , Haryana 133207 , India ; Department of Biotechnology, Maharishi Markandeshwar Engineering College , Maharishi Markandeshwar (Deemed to be University) , Mullana-Ambala , Haryana , India
| | - Sheetal Kashyap
- Department of Biotechnology, Maharishi Markandeshwar Engineering College , Maharishi Markandeshwar (Deemed to be University) , Mullana-Ambala , Haryana , India
| | - Samarjeet Singh Siwal
- Department of Chemistry, Maharishi Markandeshwar Engineering College , Maharishi Markandeshwar (Deemed to be University) , Mullana-Ambala , Haryana , India
| | - Shakti K. Dhiman
- Instrumentation Division, CSIR-Indian Institute of Integrative Medicine , Jammu , Jammu and Kashmir , India
| | - Adesh K. Saini
- Central Research Cell, MM Institute of Medical Sciences and Research , Maharishi Markandeshwar (Deemed to be University) , Mullana-Ambala , Haryana 133207 , India ; Department of Biotechnology, Maharishi Markandeshwar Engineering College , Maharishi Markandeshwar (Deemed to be University) , Mullana-Ambala , Haryana , India
| | - Reena V. Saini
- Central Research Cell, MM Institute of Medical Sciences and Research , Maharishi Markandeshwar (Deemed to be University) , Mullana-Ambala , Haryana , India ; Department of Biotechnology, Maharishi Markandeshwar Engineering College , Maharishi Markandeshwar (Deemed to be University) , Mullana-Ambala , Haryana , India
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113
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Starukh H, Koštejn M, Matějka V, Praus P. Graphitic Carbon Nitride as a Platform for the Synthesis of Silver Nanoclusters. NANOSCALE RESEARCH LETTERS 2021; 16:166. [PMID: 34817713 PMCID: PMC8613329 DOI: 10.1186/s11671-021-03621-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Accepted: 11/04/2021] [Indexed: 05/27/2023]
Abstract
Graphitic carbon nitride (CN) synthetized by the thermal polycondensation of melamine at 550 °C for 4 h was further exfoliated by heating at 500 °C for 3 h. Silver cations were adsorbed on the exfoliated graphitic carbon nitride (CNE) and then reduced by sodium borohydride forming silver nanoclusters (NCs) with a size of less than 1 nm. The NCs were located on the CNE surface and did not change the CNE properties except for its pore size distribution and thereby specific surface area (SSA). The Ag NCs were able to collect the photoinduced electrons of CNE and thus reduce their recombination with the holes. It was also documented by the increase in the CNE photocatalytic activity in terms of the degradation of antibiotic Ofloxacin. This study demonstrates the ability of CNE to serve as a platform for a simple and fast synthesis of Ag NCs without any stabilizing compounds.
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Affiliation(s)
- Halyna Starukh
- Institute of Environmental Technology, CEET, VSB-Technical University of Ostrava, 17. listopadu 15, 70800, Ostrava-Poruba, Czech Republic
- Department of Chemistry, Faculty of Materials Science and Technology, VSB-Technical University of Ostrava, 17. listopadu 15, 708 00, Ostrava-Poruba, Czech Republic
- Chuiko Institute of Surface Chemistry of National Academy of Sciences of Ukraine, General Naumov Street 17, Kyiv, 03164, Ukraine
| | - Martin Koštejn
- Institute of Chemical Process Fundamentals, Czech Academy of Science, Rozvojová 1, 165 02, Prague, Czech Republic
| | - Vlastimil Matějka
- Department of Chemistry, Faculty of Materials Science and Technology, VSB-Technical University of Ostrava, 17. listopadu 15, 708 00, Ostrava-Poruba, Czech Republic
| | - Petr Praus
- Institute of Environmental Technology, CEET, VSB-Technical University of Ostrava, 17. listopadu 15, 70800, Ostrava-Poruba, Czech Republic.
- Department of Chemistry, Faculty of Materials Science and Technology, VSB-Technical University of Ostrava, 17. listopadu 15, 708 00, Ostrava-Poruba, Czech Republic.
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114
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Synthesis of Chitosan-Silver Nanoparticle Composite Spheres and Their Antimicrobial Activities. Polymers (Basel) 2021; 13:polym13223990. [PMID: 34833288 PMCID: PMC8620293 DOI: 10.3390/polym13223990] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Revised: 11/12/2021] [Accepted: 11/15/2021] [Indexed: 11/17/2022] Open
Abstract
Synthesis of silver nanoparticles–chitosan composite particles sphere (AgNPs-chi-spheres) has been completed and its characterization was fulfilled by UV–vis spectroscopy, Fourier transform infrared (FT-IR) spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM), and zetasizer nano. UV–vis spectroscopy characterization showed that AgNPs-chi-spheres gave optimum absorption at a wavelength of 410 nm. The XRD spectra showed that the structure of AgNPs-chi-spheres were crystalline and spherical. Characterization by SEM showed that AgNPs-chi-spheres, with the addition of 20% of NaOH, resulted in the lowest average particle sizes of 46.91 nm. EDX analysis also showed that AgNPs-chi-spheres, with the addition of a 20% NaOH concentration, produced particles with regular spheres, a smooth and relatively nonporous structure. The analysis using zetasizer nano showed that the zeta potential value and the polydispersity index value of the AgNPs-chi-sphere tended to increase with an increased NaOH concentration. The results of the microbial activity screening showed that the AgNP-chi-Spheres with highest concentration of NaOH, produced the highest inhibition zone diameters against S. aureus, E. coli, and C. albicans, with inhibition zone diameters of 19.5, 18.56, and 12.25 nm, respectively.
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115
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Mondal J, Srivastava SK. Room-Temperature One-Step Synthesis of Silver/Reduced Graphene Oxide Nanocomposites as an Excellent Microwave Absorber. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:13409-13419. [PMID: 34736324 DOI: 10.1021/acs.langmuir.1c02110] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The present study is focused on room-temperature synthesis carried out by reduction of an aqueous silver nitrate (AgNO3) and AgNO3/graphene oxide (GO) dispersion using a low-cost commercial Fehling B solution in one step to form silver quantum dots (Ag QDs) and their Ag/reduced graphene oxide (Ag/RGO) nanocomposites and their characterization. The crystallinity, surface chemistry, structural, and morphological studies indicated the formation of crystalline small-sized quasispherical-functionalized Ag particles distributed uniformly on the surface of RGO. The conductivity measurements further showed an improvement in the conductivity of Ag/RGO nanocomposites as compared to neat Ag QDs. Our findings showed that Ag/RGO nanocomposites prepared by using 0.055 wt % of GO exhibited a total enhanced electromagnetic interference (EMI)-shielding efficiency (SET) of ∼39.2-42.3 dB (2-8 GHz) with a maximum value of ∼43.8 dB at 7. 5 GHz due to conduction loss, an interconnected conducting network, and a synergistic effect, and it followed an absorption mechanism. Furthermore, this superior absorption-dominated shielding conferred reflection loss (RL) in the range of -79 to -82.5 dB with a RL minima of -88 dB at 7.5 GHz, considering an effective absorption bandwidth of ∼6 GHz with 99.9% absorptivity. It is anticipated that Ag/RGO nanocomposites prepared in one step at room temperature could find potential EMI-shielding applications.
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Affiliation(s)
- Jayanta Mondal
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302 West Bengal, India
| | - Suneel Kumar Srivastava
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302 West Bengal, India
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116
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Sustainable Synthesis of Silver Nanoparticles Using Marine Algae for Catalytic Degradation of Methylene Blue. Catalysts 2021. [DOI: 10.3390/catal11111377] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Herein, Sargassum coreanum (marine algae)-mediated silver nanoparticles (AgNPs) were successfully synthesized by a simple reduction method. The synthesized AgNPs were characterized using ultraviolet-visible spectroscopy, attenuated total reflection Fourier transformed infrared spectroscopy, X-ray diffractometry, field emission scanning electron microscopy (FESEM) with energy-dispersive X-ray (EDX) spectroscopy, and high-resolution transmission electron microscopy (HR-TEM) analysis. The acquired colloidal AgNPs were strongly absorbed around 420 nm and displayed brown color under visible light. The XRD pattern of AgNPs exposed their face-centered cubic geometry along with crystalline nature. The HRTEM images of synthesized AgNPs confirmed the mean particle size of 19 nm with a distorted spherical shape, and the calculated interlayer distance (d-spacing value) was about 0.24 nm. Further, the catalytic degradation of methylene blue using sodium borohydride and AgNPs was monitored using UV–vis spectroscopy. The result revealed that AgNPs performed as a superior catalyst, which completely degraded MB in 20 min. The rate constant for MB degradation was calculated to be 0.106 min−1, demonstrating that the marine algae-mediated AgNPs had outstanding catalytic activity. This approach is easy and environmentally benign, which can be applied for environmental-based applications such as dye degradation and pollutant detoxification.
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Antibacterial activity and characteristics of silver nanoparticles biosynthesized from Carduus crispus. Sci Rep 2021; 11:21047. [PMID: 34702916 PMCID: PMC8548519 DOI: 10.1038/s41598-021-00520-2] [Citation(s) in RCA: 84] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Accepted: 10/11/2021] [Indexed: 12/04/2022] Open
Abstract
In recent years’ synthesis of metal nanoparticle using plants has been extensively studied and recognized as a non-toxic and efficient method applicable in biomedical field. The aim of this study is to investigate the role of different parts of medical plant Carduus crispus on synthesizing silver nanoparticles and characterize the produced nanoparticle. Our study showed that silver nanoparticles (AgNP) synthesized via whole plant extract exhibited a blue shift in absorption spectra with increased optical density, which correlates to a high yield and small size. Also, the results of zeta potential, X-ray diffraction, photon cross-correlation spectroscopy analysis showed the surface charge of − 54.29 ± 4.96 mV (AgNP-S), − 42.64 ± 3.762 mV (AgNP-F), − 46.02 ± 4.17 mV (AgNP-W), the crystallite size of 36 nm (AgNP-S), 13 nm (AgNP-F), 14 nm (AgNP-W) with face-centered cubic structure and average grain sizes of 145.1 nm, 22.5 nm and 99.6 nm. Another important characteristic, such as elemental composition and constituent capping agent has been determined by energy-dispersive X-ray spectroscopy and Fourier transform infrared. The silver nanoparticles were composed of ~ 80% Ag, ~ 15% K, and ~ 7.5% Ca (or ~ 2.8% P) elements. Moreover, the results of the FTIR measurement suggested that the distinct functional groups present in both AgNP-S and AgNP-F were found in AgNP-W. The atomic force microscopy analysis revealed that AgNP-S, AgNP-F and AgNP-W had sizes of 131 nm, 33 nm and 70 nm respectively. In addition, the biosynthesized silver nanoparticles were evaluated for their cytotoxicity and antibacterial activity. At 17 µg/ml concentration, AgNP-S, AgNP-F and AgNP-W showed very low toxicity on HepG2 cell line but also high antibacterial activity. The silver nanoparticles showed antibacterial activity on both gram-negative bacterium Escherichia coli (5.5 ± 0.2 mm to 6.5 ± 0.3 mm) and gram-positive bacterium Micrococcus luteus (7 ± 0.4 mm to 7.7 ± 0.5 mm). Our study is meaningful as a first observation indicating the possibility of using special plant organs to control the characteristics of nanoparticles.
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Gold and Silver Nanoparticle-Based Colorimetric Sensors: New Trends and Applications. CHEMOSENSORS 2021. [DOI: 10.3390/chemosensors9110305] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Gold and Silver nanoparticles (AuNPs and AgNPs) are perfect platforms for developing sensing colorimetric devices thanks to their high surface to volume ratio and distinctive optical properties, particularly sensitive to changes in the surrounding environment. These characteristics ensure high sensitivity in colorimetric devices. Au and Ag nanoparticles can be capped with suitable molecules that can act as specific analyte receptors, so highly selective sensors can be obtained. This review aims to highlight the principal strategies developed during the last decade concerning the preparation of Au and Ag nanoparticle-based colorimetric sensors, with particular attention to environmental and health monitoring applications.
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Golubeva OY, Ulyanova NY, Vladimirova EV, Shamova OV. Comparison of the Antimicrobial and Hemolytic Activities of Various Forms of Silver (Ions, Nanoparticles, Bioconjugates) Stabilized in a Zeolite Matrix. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:12356-12364. [PMID: 34643405 DOI: 10.1021/acs.langmuir.1c01899] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
A quantitative and qualitative comparison of the antimicrobial and hemolytic activities of silver in various states, in the form of ions, nanoparticles, and bioconjugates with the antimicrobial protein lysozyme stabilized in an inert zeolite matrix, has been carried out. A synthetic zeolite with a β structure was chosen as a zeolite matrix. Using the ion-exchange method, the method of chemical reduction, and treating the matrix with a silver hydrosol with specified characteristics, samples of zeolites with the same silver content in various forms (Ag+, Ag° - Ag°/Lyz) in the amounts of 0.8 and 5 wt % have been synthesized. The samples obtained were studied by a complex of physicochemical research methods: X-ray diffraction, UV absorption spectroscopy, low-temperature nitrogen adsorption, electron microscopy, and atomic absorption. Antimicrobial activity was assessed against antibiotic-resistant Gram-negative microbe (e.g., Escherichia coli ML-35, Pseudomonas aeruginosa 522/17 MDR, Klebsiella pneumoniae ESBL 344) and Gram-positive microbe (e.g., Staphylococcus aureus 1399/17). The hemolytic activity in relation to human erythrocytes was estimated. The results obtained showed significant antimicrobial activity with a simultaneously high hemolytic activity of ionic silver. Silver nanoparticles have a lower level of antimicrobial activity and toxicity. Bioconjugates of silver nanoparticles and lysozyme showed an optimal combination of antimicrobial properties and lack of hemolytic activity.
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Affiliation(s)
- Olga Yu Golubeva
- Institute of Silicate Chemistry, Russian Academy of Sciences, Adm. Makarova Emb., 2, St. Petersburg 199034, Russia
| | - Natalia Yu Ulyanova
- Institute of Silicate Chemistry, Russian Academy of Sciences, Adm. Makarova Emb., 2, St. Petersburg 199034, Russia
| | | | - Olga V Shamova
- Institute of Experimental Medicine, Academic Pavlov Str. 12, St. Petersburg 197376, Russia
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Aljohani M, Alkabli J, Abualnaja MM, Alrefaei AF, Almehmadi SJ, Mahmoud MH, El-Metwaly NM. Electrospun AgNPs-polylactate nanofibers and their antimicrobial applications. REACT FUNCT POLYM 2021. [DOI: 10.1016/j.reactfunctpolym.2021.104999] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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Ecofriendly preparation of silver nanoparticles-based nanocomposite stabilized by polysaccharides with antibacterial, antifungal and antiviral activities. Biometals 2021; 34:1313-1328. [PMID: 34564808 PMCID: PMC8475443 DOI: 10.1007/s10534-021-00344-7] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Accepted: 09/13/2021] [Indexed: 11/02/2022]
Abstract
In the present work, sustainable and green method was used to prepare silver nanoparticles (Ag-NPs), followed with incorporation into tertiary nanocomposite consisted of starch, oxidized cellulose and ethyl cellulose. The prepared tertiary silver-nanocomposite (Ag-NC) was fully characterized via instrumental analysis (UV-vis, FT-IR, XRD, SEM, EDX and TEM) and evaluated for antibacterial, antifungal, and antiviral activities. Ag-NC significantly suppressed growth of tested bacterial strains (Escherichia coli, Pseudomonas aeruginosa, Staphylococcus aureus and Bacillus subtilis) as compared with controls. Antifungal activity revealed that the prepared tertiary Ag-NC has a promising antifungal activity towards unicellular (Candida albicans) and multicellular fungi ( Aspergillus niger, A. terreus, A. flavus and A. fumigatus). In same line, both Ag-NC and free Ag-NPs have shown a dose-dependent reduction in Vero cell line with maximum non-toxic dose at 6.25 and 12.5 μg/mL, respectively. Both Ag-NPs and Ag-NC exhibited antiviral effects against Herpes simplex virus, Adenovirus and Coxsackie B virus in a dose-dependent manner. Combined treatment of Ag-NPs incorporated into tertiary nanocomposite based on starch, oxidized cellulose and ethyl cellulose opens new possibilities to be more efficient nanomaterials for preventing microbial growth. In conclusion, the prepared tertiary Ag-NC has a promising antibacterial, antifungal as well as antiviral activities.
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Jamjoum HAA, Umar K, Adnan R, Razali MR, Mohamad Ibrahim MN. Synthesis, Characterization, and Photocatalytic Activities of Graphene Oxide/metal Oxides Nanocomposites: A Review. Front Chem 2021; 9:752276. [PMID: 34621725 PMCID: PMC8490810 DOI: 10.3389/fchem.2021.752276] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Accepted: 09/09/2021] [Indexed: 12/28/2022] Open
Abstract
Sustainable water processing techniques have been extensively investigated and are capable of improving water quality. Among the techniques, photocatalytic technology has shown great potential in recent years as a low cost, environmentally friendly and sustainable technology. However, the major challenge in the industrial development of photocatalyst technology is to develop an ideal photocatalyst which must have high photocatalytic activity, a large specific surface area, harvest sunlight and shows recyclability. Keeping these views, the present review highlighted the synthesis approaches of graphene/metal oxide nanocomposite, characterization techniques and their prominent applications in photocatalysis. Various parameters such as photocatalyst loading, structure of photocatalyst, temperature, pH, effect of oxidizing species and wavelength of light were addressed which could affect the rate of degradation. Moreover, the formation of intermediates during photo-oxidation of organic pollutants using these photocatalysts is also discussed. The analysis concluded with a synopsis of the importance of graphene-based materials in pollutant removal. Finally, a brief overview of the problems and future approaches in the field is also presented.
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Affiliation(s)
- Hayfa Alajilani Abraheem Jamjoum
- School of Chemical Sciences, Universiti Sains Malaysia, Pulau Pinang, Malaysia
- Department of Chemistry, Faculty of Science, University of Sabratha, Sabratha, Libya
| | - Khalid Umar
- School of Chemical Sciences, Universiti Sains Malaysia, Pulau Pinang, Malaysia
| | - Rohana Adnan
- School of Chemical Sciences, Universiti Sains Malaysia, Pulau Pinang, Malaysia
| | - Mohd. R. Razali
- School of Chemical Sciences, Universiti Sains Malaysia, Pulau Pinang, Malaysia
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Abstract
Although several metal ions/metal nanoparticles (NPs) are toxic to both plants and animals, some of them are used as nutrients and growth promoters. Plants exposed to silver nanoparticles (Ag-NPs) have shown both beneficial and harmful effects. All concentrations of Ag-NPs are not effective for a given plant because any excess can block the passage of essential nutrients. Regulated treatment of plants by Ag-NPs may enhance their overall growth and development. It has been noticed that Ag-NPs decrease the mass of edible plants (Cucurbita pepo, Allium cepa, cabbage, and lettuce) and vegetables, but they also induce the germination of seeds in many cases. NPs interact with proteins, enzymes, and carbohydrates influencing the total biomass, root, and shoot growth of plants. Also, Ag-NPs act as an ethylene inhibitor and activate the antioxidants in onions. Their substantial quantity becomes deposited in onion leaves and bulbs. Size and concentration are the two major factors responsible for the increase/decrease of plant growth and biomass. Plants make adaptations to reduce the toxicity caused by Ag-NPs. In some cases, Ag-NPs induce root elongation and increase chlorophyll, carbohydrate, proteins, rate of photosynthesis and inhibit the biosynthesis of ethylene. This review article provides a comprehensive overview of both the beneficial and adverse effects of Ag-NPs on germination, growth, development, physiological, and biochemical characteristics of a wide range of edible and crop plants. We have also critically discussed: the chemistry, toxicity, uptake, translocation, and accumulation of Ag-NPs in plant systems.
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A Review on Silver Nanoparticles: Classification, Various Methods of Synthesis, and Their Potential Roles in Biomedical Applications and Water Treatment. WATER 2021. [DOI: 10.3390/w13162216] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Recent developments in nanoscience have appreciably modified how diseases are prevented, diagnosed, and treated. Metal nanoparticles, specifically silver nanoparticles (AgNPs), are widely used in bioscience. From time to time, various synthetic methods for the synthesis of AgNPs are reported, i.e., physical, chemical, and photochemical ones. However, among these, most are expensive and not eco-friendly. The physicochemical parameters such as temperature, use of a dispersing agent, surfactant, and others greatly influence the quality and quantity of the synthesized NPs and ultimately affect the material’s properties. Scientists worldwide are trying to synthesize NPs and are devising methods that are easy to apply, eco-friendly, and economical. Among such strategies is the biogenic method, where plants are used as the source of reducing and capping agents. In this review, we intend to debate different strategies of AgNP synthesis. Although, different preparation strategies are in use to synthesize AgNPs such as electron irradiation, optical device ablation, chemical reduction, organic procedures, and photochemical methods. However, biogenic processes are preferably used, as they are environment-friendly and economical. The review covers a comprehensive discussion on the biological activities of AgNPs, such as antimicrobial, anticancer anti-inflammatory, and anti-angiogenic potentials of AgNPs. The use of AgNPs in water treatment and disinfection has also been discussed in detail.
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Rónavári A, Bélteky P, Boka E, Zakupszky D, Igaz N, Szerencsés B, Pfeiffer I, Kónya Z, Kiricsi M. Polyvinyl-Pyrrolidone-Coated Silver Nanoparticles-The Colloidal, Chemical, and Biological Consequences of Steric Stabilization under Biorelevant Conditions. Int J Mol Sci 2021; 22:8673. [PMID: 34445378 PMCID: PMC8395525 DOI: 10.3390/ijms22168673] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Revised: 08/05/2021] [Accepted: 08/09/2021] [Indexed: 11/17/2022] Open
Abstract
(1) Background: Several properties of silver nanoparticles (AgNPs), such as cytotoxic, anticancer, and antimicrobial activities, have been subjects of intense research; however, important aspects such as nanoparticle aggregation are generally neglected, although a decline in colloidal stability leads to a loss of the desired biological activities. Colloidal stability is affected by pH, ionic strength, or a plethora of biomolecules that interact with AgNPs under biorelevant conditions. (2) Methods: As only a few studies have focused on the relationship between aggregation behavior and the biological properties of AgNPs, here, we have systematically evaluated this issue by completing a thorough analysis of sterically (via polyvinyl-pyrrolidone (PVP)) stabilized AgNPs that were subjected to different circumstances. We assessed ultraviolet-visible light absorption, dynamic light scattering, zeta potential measurements, in vitro cell viability, and microdilution assays to screen both colloidal stability as well as bioactivity. (3) Results: The results revealed that although PVP provided outstanding biorelevant colloidal stability, the chemical stability of AgNPs could not be maintained completely with this capping material. (4) Conclusion: These unexpected findings led to the realization that stabilizing materials have more profound importance in association with biorelevant applications of nanomaterials than just being simple colloidal stabilizers.
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Affiliation(s)
- Andrea Rónavári
- Department of Applied and Environmental Chemistry, Faculty of Science and Informatics, University of Szeged, H-6720 Szeged, Hungary; (A.R.); (P.B.); (E.B.); (D.Z.)
| | - Péter Bélteky
- Department of Applied and Environmental Chemistry, Faculty of Science and Informatics, University of Szeged, H-6720 Szeged, Hungary; (A.R.); (P.B.); (E.B.); (D.Z.)
| | - Eszter Boka
- Department of Applied and Environmental Chemistry, Faculty of Science and Informatics, University of Szeged, H-6720 Szeged, Hungary; (A.R.); (P.B.); (E.B.); (D.Z.)
| | - Dalma Zakupszky
- Department of Applied and Environmental Chemistry, Faculty of Science and Informatics, University of Szeged, H-6720 Szeged, Hungary; (A.R.); (P.B.); (E.B.); (D.Z.)
| | - Nóra Igaz
- Department of Biochemistry and Molecular Biology, Faculty of Science and Informatics, University of Szeged, H-6726 Szeged, Hungary; (N.I.); (M.K.)
| | - Bettina Szerencsés
- Department of Microbiology, Faculty of Science and Informatics, University of Szeged, H-6726 Szeged, Hungary; (B.S.); (I.P.)
| | - Ilona Pfeiffer
- Department of Microbiology, Faculty of Science and Informatics, University of Szeged, H-6726 Szeged, Hungary; (B.S.); (I.P.)
| | - Zoltán Kónya
- Department of Applied and Environmental Chemistry, Faculty of Science and Informatics, University of Szeged, H-6720 Szeged, Hungary; (A.R.); (P.B.); (E.B.); (D.Z.)
- MTA-SZTE Reaction Kinetics and Surface Chemistry Research Group, H-6720 Szeged, Hungary
| | - Mónika Kiricsi
- Department of Biochemistry and Molecular Biology, Faculty of Science and Informatics, University of Szeged, H-6726 Szeged, Hungary; (N.I.); (M.K.)
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Krishnamoorthi R, Bharathakumar S, Malaikozhundan B, Mahalingam PU. Mycofabrication of gold nanoparticles: Optimization, characterization, stabilization and evaluation of its antimicrobial potential on selected human pathogens. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2021. [DOI: 10.1016/j.bcab.2021.102107] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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127
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Jara N, Milán NS, Rahman A, Mouheb L, Boffito DC, Jeffryes C, Dahoumane SA. Photochemical Synthesis of Gold and Silver Nanoparticles-A Review. Molecules 2021; 26:4585. [PMID: 34361738 PMCID: PMC8348930 DOI: 10.3390/molecules26154585] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2021] [Revised: 07/26/2021] [Accepted: 07/27/2021] [Indexed: 01/08/2023] Open
Abstract
Nanomaterials have supported important technological advances due to their unique properties and their applicability in various fields, such as biomedicine, catalysis, environment, energy, and electronics. This has triggered a tremendous increase in their demand. In turn, materials scientists have sought facile methods to produce nanomaterials of desired features, i.e., morphology, composition, colloidal stability, and surface chemistry, as these determine the targeted application. The advent of photoprocesses has enabled the easy, fast, scalable, and cost- and energy-effective production of metallic nanoparticles of controlled properties without the use of harmful reagents or sophisticated equipment. Herein, we overview the synthesis of gold and silver nanoparticles via photochemical routes. We extensively discuss the effect of varying the experimental parameters, such as the pH, exposure time, and source of irradiation, the use or not of reductants and surfactants, reagents' nature and concentration, on the outcomes of these noble nanoparticles, namely, their size, shape, and colloidal stability. The hypothetical mechanisms that govern these green processes are discussed whenever available. Finally, we mention their applications and insights for future developments.
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Affiliation(s)
- Nicole Jara
- School of Biological Sciences and Engineering, Yachay Tech University, Hacienda San José s/n, San Miguel de Urcuquí 100119, Ecuador; (N.J.); (N.S.M.)
| | - Nataly S. Milán
- School of Biological Sciences and Engineering, Yachay Tech University, Hacienda San José s/n, San Miguel de Urcuquí 100119, Ecuador; (N.J.); (N.S.M.)
| | - Ashiqur Rahman
- Center for Midstream Management and Science, Lamar University, Beaumont, TX 77710, USA; (A.R.); (C.J.)
| | - Lynda Mouheb
- Laboratoire de Recherche de Chimie Appliquée et de Génie Chimique, Hasnaoua I, Université Mouloud Mammeri B.P.17 RP, Tizi-Ouzou 15000, Algeria;
| | - Daria C. Boffito
- Department of Chemical Engineering, Polytechnique Montréal, C.P. 6079, Succ. Centre-Ville, Montréal, QC H3C 3A7, Canada;
| | - Clayton Jeffryes
- Center for Midstream Management and Science, Lamar University, Beaumont, TX 77710, USA; (A.R.); (C.J.)
- Center for Advances in Water and Air Quality, The Dan F. Smith Department of Chemical Engineering, Lamar University, Beaumont, TX 77710, USA
| | - Si Amar Dahoumane
- School of Biological Sciences and Engineering, Yachay Tech University, Hacienda San José s/n, San Miguel de Urcuquí 100119, Ecuador; (N.J.); (N.S.M.)
- Department of Chemical Engineering, Polytechnique Montréal, C.P. 6079, Succ. Centre-Ville, Montréal, QC H3C 3A7, Canada;
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Shali R, Neamati A, Tabrizi MH, Etminan A, Ghandehari S, Noghondar MK. Green fabrication of silver nanoparticles mediated by Bistorta officinalis aqueous extract: putative mechanism for apoptosis-inducing properties. INORG NANO-MET CHEM 2021. [DOI: 10.1080/24701556.2021.1956952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Reyhaneh Shali
- Department of Biology, Mashhad Branch, Islamic Azad University, Mashhad, Iran
| | - Ali Neamati
- Department of Biology, Mashhad Branch, Islamic Azad University, Mashhad, Iran
| | | | - Ayda Etminan
- Department of Biology, Mashhad Branch, Islamic Azad University, Mashhad, Iran
| | - Sara Ghandehari
- Department of Biology, Mashhad Branch, Islamic Azad University, Mashhad, Iran
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Biodirected Synthesis of Silver Nanoparticles Using Aqueous Honey Solutions and Evaluation of Their Antifungal Activity against Pathogenic Candida Spp. Int J Mol Sci 2021; 22:ijms22147715. [PMID: 34299335 PMCID: PMC8305289 DOI: 10.3390/ijms22147715] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 07/03/2021] [Accepted: 07/14/2021] [Indexed: 12/14/2022] Open
Abstract
Silver nanoparticles (AgNPs) were synthesized using aqueous honey solutions with a concentration of 2%, 10%, and 20%-AgNPs-H2, AgNPs-H10, and AgNPs-H20. The reaction was conducted at 35 °C and 70 °C. Additionally, nanoparticles obtained with the citrate method (AgNPs-C), while amphotericin B (AmB) and fluconazole were used as controls. The presence and physicochemical properties of AgNPs was affirmed by analyzing the sample with ultraviolet-visible (UV-Vis) and fluorescence spectroscopy, scanning electron microscopy (SEM), and dynamic light scattering (DLS). The 20% honey solution caused an inhibition of the synthesis of nanoparticles at 35 °C. The antifungal activity of the AgNPs was evaluated using opportunistic human fungal pathogens Candida albicans and Candida parapsilosis. The antifungal effect was determined by the minimum inhibitory concentration (MIC) and disc diffusion assay. The highest activity in the MIC tests was observed in the AgNPs-H2 variant. AgNPs-H10 and AgNPs-H20 showed no activity or even stimulated fungal growth. The results of the Kirby-Bauer disc diffusion susceptibility test for C. parapsilosis strains indicated stronger antifungal activity of AgNPs-H than fluconazole. The study demonstrated that the antifungal activity of AgNPs is closely related to the concentration of honey used for the synthesis thereof.
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Bruna T, Maldonado-Bravo F, Jara P, Caro N. Silver Nanoparticles and Their Antibacterial Applications. Int J Mol Sci 2021; 22:7202. [PMID: 34281254 PMCID: PMC8268496 DOI: 10.3390/ijms22137202] [Citation(s) in RCA: 309] [Impact Index Per Article: 103.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Revised: 07/02/2021] [Accepted: 07/02/2021] [Indexed: 12/22/2022] Open
Abstract
Silver nanoparticles (AgNPs) have been imposed as an excellent antimicrobial agent being able to combat bacteria in vitro and in vivo causing infections. The antibacterial capacity of AgNPs covers Gram-negative and Gram-positive bacteria, including multidrug resistant strains. AgNPs exhibit multiple and simultaneous mechanisms of action and in combination with antibacterial agents as organic compounds or antibiotics it has shown synergistic effect against pathogens bacteria such as Escherichia coli and Staphylococcus aureus. The characteristics of silver nanoparticles make them suitable for their application in medical and healthcare products where they may treat infections or prevent them efficiently. With the urgent need for new efficient antibacterial agents, this review aims to establish factors affecting antibacterial and cytotoxic effects of silver nanoparticles, as well as to expose the advantages of using AgNPs as new antibacterial agents in combination with antibiotic, which will reduce the dosage needed and prevent secondary effects associated to both.
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Affiliation(s)
- Tamara Bruna
- Centro de Investigación Austral Biotech, Facultad de Ciencias, Universidad Santo Tomás, Avenida Ejército 146, Santiago 8320000, Chile;
| | - Francisca Maldonado-Bravo
- Centro de Investigación Austral Biotech, Facultad de Ciencias, Universidad Santo Tomás, Avenida Ejército 146, Santiago 8320000, Chile;
- Departamento de Química, Facultad de Ciencias, Universidad de Chile, Las Palmeras 3425, Ñuñoa, Santiago 7800003, Chile;
| | - Paul Jara
- Departamento de Química, Facultad de Ciencias, Universidad de Chile, Las Palmeras 3425, Ñuñoa, Santiago 7800003, Chile;
| | - Nelson Caro
- Centro de Investigación Austral Biotech, Facultad de Ciencias, Universidad Santo Tomás, Avenida Ejército 146, Santiago 8320000, Chile;
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Jadhav SA, Patil AH, Thoravat SS, Patil VS, Patil PS. A Brief Overview of Antimicrobial Nanotextiles Prepared by In Situ Synthesis and Deposition of Silver Nanoparticles on Cotton. NANOBIOTECHNOLOGY REPORTS 2021. [PMCID: PMC8431954 DOI: 10.1134/s2635167621040170] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Antimicrobial nanotextiles are prepared by coating or deposition of the biocides such as organic compounds or nanoparticles on the textile fibers. The deposition of silver nanoparticles (AgNPs) on textiles has received increased attention due to their well-known antimicrobial properties. Recently, the technique of in situ synthesis and deposition of AgNPs on cotton is being used frequently to prepare antimicrobial nanotextiles. The technique involves complexation of the Ag+ ions in cotton fibers followed by their reduction to generate the particles. This in situ synthesis and deposition approach provides several advantages over the post synthesis deposition or grafting process. In this brief overview, we have presented basic information about different biocides used to prepare antimicrobial nanotextiles and highlighted the importance of in situ synthesis and deposition of AgNPs on cotton to prepare the antimicrobial nanotextiles. The recent achievements in this field and future challenges that need to be addressed are presented.
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Affiliation(s)
- Sushilkumar A. Jadhav
- School of Nanoscience and Technology, Shivaji University Kolhapur, Vidyanagar, 416004 Kolhapur, Maharashtra India
| | - Aravind H. Patil
- Department of Physics, Shivaji University Kolhapur, Vidyanagar, 416004 Kolhapur, Maharashtra India
| | - Saurabh S. Thoravat
- School of Nanoscience and Technology, Shivaji University Kolhapur, Vidyanagar, 416004 Kolhapur, Maharashtra India
| | - Vinay S. Patil
- School of Nanoscience and Technology, Shivaji University Kolhapur, Vidyanagar, 416004 Kolhapur, Maharashtra India
| | - Pramod S. Patil
- School of Nanoscience and Technology, Shivaji University Kolhapur, Vidyanagar, 416004 Kolhapur, Maharashtra India
- Department of Physics, Shivaji University Kolhapur, Vidyanagar, 416004 Kolhapur, Maharashtra India
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Kukushkina EA, Hossain SI, Sportelli MC, Ditaranto N, Picca RA, Cioffi N. Ag-Based Synergistic Antimicrobial Composites. A Critical Review. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:1687. [PMID: 34199123 PMCID: PMC8306300 DOI: 10.3390/nano11071687] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 06/15/2021] [Accepted: 06/21/2021] [Indexed: 12/12/2022]
Abstract
The emerging problem of the antibiotic resistance development and the consequences that the health, food and other sectors face stimulate researchers to find safe and effective alternative methods to fight antimicrobial resistance (AMR) and biofilm formation. One of the most promising and efficient groups of materials known for robust antimicrobial performance is noble metal nanoparticles. Notably, silver nanoparticles (AgNPs) have been already widely investigated and applied as antimicrobial agents. However, it has been proposed to create synergistic composites, because pathogens can find their way to develop resistance against metal nanophases; therefore, it could be important to strengthen and secure their antipathogen potency. These complex materials are comprised of individual components with intrinsic antimicrobial action against a wide range of pathogens. One part consists of inorganic AgNPs, and the other, of active organic molecules with pronounced germicidal effects: both phases complement each other, and the effect might just be the sum of the individual effects, or it can be reinforced by the simultaneous application. Many organic molecules have been proposed as potential candidates and successfully united with inorganic counterparts: polysaccharides, with chitosan being the most used component; phenols and organic acids; and peptides and other agents of animal and synthetic origin. In this review, we overview the available literature and critically discuss the findings, including the mechanisms of action, efficacy and application of the silver-based synergistic antimicrobial composites. Hence, we provide a structured summary of the current state of the research direction and give an opinion on perspectives on the development of hybrid Ag-based nanoantimicrobials (NAMs).
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Affiliation(s)
- Ekaterina A. Kukushkina
- Chemistry Department, University of Bari Aldo Moro, via Orabona 4, 70126 Bari, Italy; (E.A.K.); (S.I.H.); (M.C.S.); (N.D.); (R.A.P.)
- CSGI (Center for Colloid and Surface Science), Chemistry Department, University of Bari, via Orabona 4, 70126 Bari, Italy
| | - Syed Imdadul Hossain
- Chemistry Department, University of Bari Aldo Moro, via Orabona 4, 70126 Bari, Italy; (E.A.K.); (S.I.H.); (M.C.S.); (N.D.); (R.A.P.)
- CSGI (Center for Colloid and Surface Science), Chemistry Department, University of Bari, via Orabona 4, 70126 Bari, Italy
| | - Maria Chiara Sportelli
- Chemistry Department, University of Bari Aldo Moro, via Orabona 4, 70126 Bari, Italy; (E.A.K.); (S.I.H.); (M.C.S.); (N.D.); (R.A.P.)
- CSGI (Center for Colloid and Surface Science), Chemistry Department, University of Bari, via Orabona 4, 70126 Bari, Italy
| | - Nicoletta Ditaranto
- Chemistry Department, University of Bari Aldo Moro, via Orabona 4, 70126 Bari, Italy; (E.A.K.); (S.I.H.); (M.C.S.); (N.D.); (R.A.P.)
- CSGI (Center for Colloid and Surface Science), Chemistry Department, University of Bari, via Orabona 4, 70126 Bari, Italy
| | - Rosaria Anna Picca
- Chemistry Department, University of Bari Aldo Moro, via Orabona 4, 70126 Bari, Italy; (E.A.K.); (S.I.H.); (M.C.S.); (N.D.); (R.A.P.)
- CSGI (Center for Colloid and Surface Science), Chemistry Department, University of Bari, via Orabona 4, 70126 Bari, Italy
| | - Nicola Cioffi
- Chemistry Department, University of Bari Aldo Moro, via Orabona 4, 70126 Bari, Italy; (E.A.K.); (S.I.H.); (M.C.S.); (N.D.); (R.A.P.)
- CSGI (Center for Colloid and Surface Science), Chemistry Department, University of Bari, via Orabona 4, 70126 Bari, Italy
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Muthu Kumara Pandian A, Gopalakrishnan B, Rajasimman M, Rajamohan N, Karthikeyan C. Green synthesis of bio-functionalized nano-particles for the application of copper removal - characterization and modeling studies. ENVIRONMENTAL RESEARCH 2021; 197:111140. [PMID: 33864794 DOI: 10.1016/j.envres.2021.111140] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Revised: 04/01/2021] [Accepted: 04/04/2021] [Indexed: 06/12/2023]
Abstract
Green technology for the synthesis of nanoparticles has gained momentum due to its cost-effectiveness and eco-friendly nature. In this research study, silver nanoparticles (AgNps) were synthesized using an eco-friendly biological method involving the use of marine algae, Halimeda gracilis. The surface properties of the synthesized silver nanoparticles were studied using UV-visible spectroscopy, Fourier transform infrared spectroscopy and scanning electron microscopy methods. During the synthesis of nano particles, the parameters namely temperature (30 °C to 90 °C), pH (6-10), silver nitrate (AgNO3) concentration (1-3 mg/ml) and quantity of algal extract (1-3 ml) were optimized to improve the production of AgNPs. The application of the synthesized silver nanoparticles for the adsorptive removal of copper from aqueous and industrial wastewater was investigated. Intra-particle diffusion mechanism was identified to be controlling step in metal removal. Regeneration of sorbent was carried out using 2.0 M HCl and the reusability was verified for 6 cycles. A removal efficiency of copper (64.8%) from electroplating wastewater demonstrated the industrial application potential of the synthesized silver nanoparticles.
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Affiliation(s)
- A Muthu Kumara Pandian
- Department of Biotechnology, Vivekanandha College of Engineering for Women, Tiruchengode, Namakkal, 637205, India.
| | - B Gopalakrishnan
- Environmental Engineering Laboratory, Department of Chemical Engineering, Annamalai University, Annamalai Naga, 608002, Tamilnadu, India
| | - M Rajasimman
- Environmental Engineering Laboratory, Department of Chemical Engineering, Annamalai University, Annamalai Naga, 608002, Tamilnadu, India
| | - N Rajamohan
- Chemical Engineering Section, Faculty of Engineering, Sohar University, Oman
| | - C Karthikeyan
- Environmental Engineering Laboratory, Department of Chemical Engineering, Annamalai University, Annamalai Naga, 608002, Tamilnadu, India
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134
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Burns KE, Uhrig RF, Jewett ME, Bourbon MF, Krupa KA. Characterizing the Role of Biologically Relevant Fluid Dynamics on Silver Nanoparticle Dependent Oxidative Stress in Adherent and Suspension In Vitro Models. Antioxidants (Basel) 2021; 10:antiox10060832. [PMID: 34071095 PMCID: PMC8224783 DOI: 10.3390/antiox10060832] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Revised: 05/19/2021] [Accepted: 05/21/2021] [Indexed: 12/12/2022] Open
Abstract
Silver nanoparticles (AgNPs) are being employed in numerous consumer goods and applications; however, they are renowned for inducing negative cellular consequences including toxicity, oxidative stress, and an inflammatory response. Nanotoxicological outcomes are dependent on numerous factors, including physicochemical, biological, and environmental influences. Currently, NP safety evaluations are carried out in both cell-based in vitro and animal in vivo models, with poor correlation between these mechanisms. These discrepancies highlight the need for enhanced exposure environments, which retain the advantages of in vitro models but incorporate critical in vivo influences, such as fluid dynamics. This study characterized the effects of dynamic flow on AgNP behavior, cellular interactions, and oxidative stress within both adherent alveolar (A549) and suspension monocyte (U937) models. This study determined that the presence of physiologically relevant flow resulted in substantial modifications to AgNP cellular interactions and subsequent oxidative stress, as assessed via reactive oxygen species (ROS), glutathione levels, p53, NFκB, and secretion of pro-inflammatory cytokines. Within the adherent model, dynamic flow reduced AgNP deposition and oxidative stress markers by roughly 20%. However, due to increased frequency of contact, the suspension U937 cells were associated with higher NP interactions and intracellular stress under fluid flow exposure conditions. For example, the increased AgNP association resulted in a 50% increase in intracellular ROS and p53 levels. This work highlights the potential of modified in vitro systems to improve analysis of AgNP dosimetry and safety evaluations, including oxidative stress assessments.
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135
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Potentials of phytosynthesized silver nanoparticles in biomedical fields: a review. INTERNATIONAL NANO LETTERS 2021. [DOI: 10.1007/s40089-021-00341-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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136
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Karimadom BR, Kornweitz H. Mechanism of Producing Metallic Nanoparticles, with an Emphasis on Silver and Gold Nanoparticles, Using Bottom-Up Methods. Molecules 2021; 26:2968. [PMID: 34067624 PMCID: PMC8156005 DOI: 10.3390/molecules26102968] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 05/09/2021] [Accepted: 05/14/2021] [Indexed: 11/16/2022] Open
Abstract
Bottom-up nanoparticle (NP) formation is assumed to begin with the reduction of the precursor metallic ions to form zero-valent atoms. Studies in which this assumption was made are reviewed. The standard reduction potential for the formation of aqueous metallic atoms-E0(Mn+aq/M0aq)-is significantly lower than the usual standard reduction potential for reducing metallic ions Mn+ in aqueous solution to a metal in solid state. E0(Mn+aq/M0solid). E0(Mn+aq/M0aq) values are negative for many typical metals, including Ag and Au, for which E0(Mn+aq/M0solid) is positive. Therefore, many common moderate reduction agents that do not have significantly high negative reduction standard potentials (e.g., hydrogen, carbon monoxide, citrate, hydroxylamine, formaldehyde, ascorbate, squartic acid, and BH4-), and cannot reduce the metallic cations to zero-valent atoms, indicating that the mechanism of NP production should be reconsidered. Both AgNP and AuNP formations were found to be multi-step processes that begin with the formation of clusters constructed from a skeleton of M+-M+ (M = Ag or Au) bonds that is followed by the reduction of a cation M+ in the cluster to M0, to form Mn0 via the formation of NPs. The plausibility of M+-M+ formation is reviewed. Studies that suggest a revised mechanism for the formation of AgNPs and AuNPs are also reviewed.
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Affiliation(s)
| | - Haya Kornweitz
- Chemical Sciences Department, Ariel University, Ariel 4077625, Israel;
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137
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BSA/Silver Nanoparticle-Loaded Hydrogel Film for Local Photothermal Treatment of Skin Cancer. Pharm Res 2021; 38:873-883. [PMID: 33835356 DOI: 10.1007/s11095-021-03038-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2020] [Accepted: 03/29/2021] [Indexed: 10/21/2022]
Abstract
PURPOSE To develop a hydrogel film containing bovine serum albumin (BSA)-coated silver nanoparticles (BSA/AgNP) and evaluate its applicability for topical photothermal treatment (PTT) of skin cancer. METHODS BSA/AgNP-loaded hydrogel films were prepared and their swelling, bioadhesive, mechanical, and photothermal properties were characterized in vitro and in vivo. RESULTS The synthesized BSA/AgNP exhibited a narrow size distribution with good size stability and, notably, possessed great photothermal activity that could stably maintain through repetitive laser irradiation. The BSA/AgNP-loaded hydrogel films showed favorable swelling, bioadhesive, tensile, and photothermal properties. Based on these results, when tested the anti-cancer effects in B16F10 s.c. tumor-bearing mice, the PTT with the topical treatment of BSA/AgNP-loaded hydrogel films could significantly inhibit the tumor growth by a single treatment with no apparent toxicity. CONCLUSIONS Overall, the results of this study demonstrated that the BSA/AgNP-loaded hydrogel films may serve as an effective but safe topical PTT agent for the treatment of skin cancer.
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138
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Monowar T, Rahman MS, Bhore SJ, Sathasivam KV. Endophytic Bacteria Enterobacter hormaechei Fabricated Silver Nanoparticles and Their Antimicrobial Activity. Pharmaceutics 2021; 13:511. [PMID: 33917798 PMCID: PMC8068190 DOI: 10.3390/pharmaceutics13040511] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 04/04/2021] [Accepted: 04/06/2021] [Indexed: 11/17/2022] Open
Abstract
Antimicrobial resistance (AMR), one of the greatest issues for humankind, draws special attention to the scientists formulating new drugs to prevent it. Great emphasis on the biological synthesis of silver nanoparticles (AgNPs) for utilization in single or combinatorial therapy will open up new avenues to the discovery of new antimicrobial drugs. The purpose of this study was to synthesize AgNPs following a green approach by using an endophytic bacterial strain, Enterobacter hormaechei, and to assess their antimicrobial potential against five pathogenic and four multidrug-resistant (MDR) microbes. UV-Vis spectroscopy, fourier-transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM), scanning electron microscopy-energy dispersive X-ray spectroscopy (SEM-EDX), and zeta potential (ζ) were used to characterize the synthesized AgNPs. Endophytic E. hormaechei-mediated AgNPs (Eh-AgNPs) were represented by a strong UV-Vis absorbance peak at 418 nm within 5 min, forming spherical and polydispersed nanoparticles in the size range of 9.91 nm to 92.54 nm. The Eh-AgNPs were moderately stable with a mean ζ value of -19.73 ± 3.94 mV. The presence of amine, amide, and hydroxyl functional groups was observed from FTIR analysis. In comparison to conventional antibiotics, the Eh-AgNPs were more effective against Bacillus cereus (ATCC 10876) and Candida albicans (ATCC 10231), exhibiting 9.14 ± 0.05 mm and 8.24 ± 0.05 mm zones of inhibition (ZOIs), respectively, while displaying effective inhibitory activity with ZOIs ranging from 10.98 ± 0.08 to 13.20 ± 0.07 mm against the MDR bacteria. Eh-AgNP synthesis was rapid and eco-friendly. The results showed that Eh-AgNPs are promising antimicrobial agents that can be used in the development and formulation of new drugs to curb the menace of antimicrobial resistance in pathogenic and MDR microbes.
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Affiliation(s)
- Tahmina Monowar
- Unit of Microbiology, Faculty of Medicine, AIMST University, Bedong 08100, Kedah, Malaysia
| | - Md. Sayedur Rahman
- Government of the People’s Republic of Bangladesh, Ministry of Information, Bangladesh Betar, Mymensingh 2202, Bangladesh;
| | - Subhash J. Bhore
- Department of Biotechnology, Faculty of Applied Sciences, AIMST University, Bedong 08100, Kedah, Malaysia; (S.J.B.); (K.V.S.)
| | - Kathiresan V. Sathasivam
- Department of Biotechnology, Faculty of Applied Sciences, AIMST University, Bedong 08100, Kedah, Malaysia; (S.J.B.); (K.V.S.)
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139
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Facile sonochemical synthesis of nano-sized cobalt(III) complex salt and their application as a mordant dye. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.129896] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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140
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Velgosova O, Mudra E, Vojtko M. Preparing, Characterization and Anti-Biofilm Activity of Polymer Fibers Doped by Green Synthesized AgNPs. Polymers (Basel) 2021; 13:polym13040605. [PMID: 33671457 PMCID: PMC7923081 DOI: 10.3390/polym13040605] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 02/15/2021] [Accepted: 02/15/2021] [Indexed: 12/22/2022] Open
Abstract
The aim of the work was to prepare polymer matrix composite (PMC) microfibers doped by green synthesized silver nanoparticles (AgNPs). The incorporation of AgNP into the polymer matrix can provide toxic properties to the polymer. Polyvinyl alcohol (PVA) was used as a matrix. AgNPs were synthesized by the green method, where the leaf extract of Rosmarinus officinalis (R. officinalis) was used as a reduction and capping agent. PVA-AgNPs composites were prepared in two ways: the ex situ method (pre-prepared globular AgNPs with a mean diameter of 20 nm were added into polymer matrix) and the in situ method (AgNPs were synthesized in the process of polymer composite preparation; in situ synthesized nanoparticles were a mix of different shapes with a mean diameter of ~100 nm). FTIR (Infrared spectroscopy with Fourier Transformation), UV–vis (Ultraviolet–visible spectroscopy), TEM (Transmission Electron Microscope), EDX (Energy-dispersive X-ray spectroscopy), and SEM (Scanning Electron Microscope) techniques were used for the analysis of nanoparticles and prepared PMCs. Thin layers and microfibers of in situ and ex situ PMCs were prepared. The presence of AgNPs clusters was evident in both PMC thin layers. After electrospinning, the chains of nanoparticles were observed inside the fibers. The distribution of nanoparticles was improved by increasing the AgNPs volume fraction (from 5 vol.% to 20 vol.%). Toxic and antibiofilm activity of AgNPs colloid, pure PVA, and PVA-AgNPs composites against the one-cell green algae Parachlorella kessleri (P. kessleri) was analyzed. AgNPs colloid, as well as PVA-AgNPs composites, showed good toxic and antibiofilm activity, and pure PVA shows no toxic/antibiofilm activity.
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Affiliation(s)
- Oksana Velgosova
- Institute of Materials and Quality Engineering, Faculty of Materials, Metallurgy and Recycling, Technical University of Košice, Letna 9/A, 04200 Košice, Slovakia
- Correspondence: ; Tel.: +42-15-5602-2533
| | - Erika Mudra
- Division of Ceramic and Non-Metallic Systems, Institute of Materials Research, Slovak Academy of Sciences, Watsonova 47, 04001 Košice, Slovakia; (E.M.); (M.V.)
| | - Marek Vojtko
- Division of Ceramic and Non-Metallic Systems, Institute of Materials Research, Slovak Academy of Sciences, Watsonova 47, 04001 Košice, Slovakia; (E.M.); (M.V.)
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141
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Weathering of Antibacterial Melt-Spun Polyfilaments Modified by Pine Rosin. Molecules 2021; 26:molecules26040876. [PMID: 33562272 PMCID: PMC7916070 DOI: 10.3390/molecules26040876] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 01/14/2021] [Accepted: 02/03/2021] [Indexed: 11/25/2022] Open
Abstract
For many antibacterial polymer fibres, especially for those with natural functional additives, the antibacterial response might not last over time. Moreover, the mechanical performance of polymeric fibres degrades significantly during the intended operation, such as usage in textile and industrial filter applications. The degradation process and overall ageing can lead to emitted volatile organic compounds (VOCs). This work focused on the usage of pine rosin as natural antibacterial chemical and analysed the weathering of melt-spun polyethylene (PE) and poly lactic acid (PLA) polyfilaments. A selected copolymer surfactant, as an additional chemical, was studied to better integrate rosin with the molecular structure of the plastics. The results reveal that a high 20 w-% of rosin content can be obtained by surfactant addition in non-oriented PE and PLA melt-spun polyfilaments. According to the VOC analysis, interestingly, the total emissions from the melt-spun PE and PLA fibres were lower for rosin-modified (10 w-%) fibres and when analysed below 60 °C. The PE fibres of the polyfilaments were found to be clearly more durable in terms of the entire weathering study, i.e., five weeks of ultraviolet radiation, thermal ageing and standard washing. The antibacterial response against Gram-positive Staphylococcus aureus by the rosin-containing fibres was determined to be at the same level (decrease of 3–5 logs cfu/mL) as when using 1.0 w-% of commercial silver-containing antimicrobial. For the PE polyfilaments with rosin (10 w-%), full killing response (decrease of 3–5 logs cfu/mL) remained after four weeks of accelerated ageing at 60 °C.
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142
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Bellotto O, Cringoli MC, Perathoner S, Fornasiero P, Marchesan S. Peptide Gelators to Template Inorganic Nanoparticle Formation. Gels 2021; 7:14. [PMID: 33540722 PMCID: PMC7930985 DOI: 10.3390/gels7010014] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2021] [Revised: 01/27/2021] [Accepted: 01/30/2021] [Indexed: 12/28/2022] Open
Abstract
The use of peptides to template inorganic nanoparticle formation has attracted great interest as a green route to advance structures with innovative physicochemical properties for a variety of applications that range from biomedicine and sensing, to catalysis. In particular, short-peptide gelators offer the advantage of providing dynamic supramolecular environments for the templating effect on the formation of inorganic nanoparticles directly in the resulting gels, and ideally without using further reductants or chemical reagents. This mini-review describes the recent progress in the field to outline future research directions towards dynamic functional materials that exploit the synergy between supramolecular chemistry, nanoscience, and the interface between organic and inorganic components for advanced performance.
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Affiliation(s)
- Ottavia Bellotto
- Chemical and Pharmaceutical Sciences Department, University of Trieste, 34127 Trieste, Italy; (O.B.); (M.C.C.); (P.F.)
| | - Maria C. Cringoli
- Chemical and Pharmaceutical Sciences Department, University of Trieste, 34127 Trieste, Italy; (O.B.); (M.C.C.); (P.F.)
- INSTM, Unit of Trieste, 34127 Trieste, Italy
| | - Siglinda Perathoner
- Dipartimento di Scienze Chimiche, Biologiche, Farmaceutiche e Ambientali, University of Messina, 98168 Messina, Italy;
- INSTM, Unit of Messina, 98168 Messina, Italy
| | - Paolo Fornasiero
- Chemical and Pharmaceutical Sciences Department, University of Trieste, 34127 Trieste, Italy; (O.B.); (M.C.C.); (P.F.)
- INSTM, Unit of Trieste, 34127 Trieste, Italy
- Istituto di Chimica dei Composti Organometallici, Consiglio Nazionale delle Ricerche (ICCOM-CNR), 34127 Trieste, Italy
| | - Silvia Marchesan
- Chemical and Pharmaceutical Sciences Department, University of Trieste, 34127 Trieste, Italy; (O.B.); (M.C.C.); (P.F.)
- INSTM, Unit of Trieste, 34127 Trieste, Italy
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143
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Ahmad B, Shireen F, Rauf A, Shariati MA, Bashir S, Patel S, Khan A, Rebezov M, Khan MU, Mubarak MS, Zhang H. Phyto-fabrication, purification, characterisation, optimisation, and biological competence of nano-silver. IET Nanobiotechnol 2021; 15:1-18. [PMID: 34694726 PMCID: PMC8675842 DOI: 10.1049/nbt2.12007] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 08/25/2020] [Accepted: 09/25/2020] [Indexed: 12/21/2022] Open
Abstract
Published studies indicate that virtually any kind of botanical material can be exploited to make biocompatible, safe, and cost-effective silver nanoparticles. This hypothesis is supported by the fact that plants possess active bio-ingredients that function as powerful reducing and coating agents for Ag+. In this respect, a phytomediation method provides favourable monodisperse, crystalline, and spherical particles that can be easily purified by ultra-centrifugation. However, the characteristics of the particles depend on the reaction conditions. Optimal reaction conditions observed in different experiments were 70-95 °C and pH 5.5-8.0. Green silver nanoparticles (AgNPs) have remarkable physical, chemical, optical, and biological properties. Research findings revealed the versatility of silver particles, ranging from exploitation in topical antimicrobial ointments to in vivo prosthetic/organ implants. Advances in research on biogenic silver nanoparticles have led to the development of sophisticated optical and electronic materials with improved efficiency in a compact configuration. So far, eco-toxicity of these nanoparticles is a big challenge, and no reliable method to improve the toxicity has been reported. Therefore, there is a need for reliable models to evaluate the effect of these nanoparticles on living organisms.
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Affiliation(s)
- Bashir Ahmad
- Center of Biotechnology and MicrobiologyUniversity of PeshawarPeshawarKhyber PakhtunkhwaPakistan
| | - Farah Shireen
- Center of Biotechnology and MicrobiologyUniversity of PeshawarPeshawarKhyber PakhtunkhwaPakistan
| | - Abdur Rauf
- Department of ChemistryUniversity of Swabi, SwabiAnbarKhyber PakhtunkhwaPakistan
| | - Mohammad Ali Shariati
- K.G. Razumovsky Moscow State University of Technologies and Management (The First Cossack University)MoscowRussian Federation
| | - Shumaila Bashir
- Department of PharmacyUniversity of PeshawarPeshawarKhyber PakhtunkhwaPakistan
| | - Seema Patel
- Bioinformatics and Medical Informatics Research CenterSan Diego State UniversitySan DiegoCaliforniaUSA
| | - Ajmal Khan
- Oman Medicinal Plants and Marine ProductsUniversity of NizwaNizwaOman
| | - Maksim Rebezov
- K.G. Razumovsky Moscow State University of Technologies and Management (The First Cossack University)MoscowRussian Federation
- V.M. Gorbatov Federal Research Center for Food Systems of Russian Academy of SciencesMoscowRussian Federation
- A. M. Prokhorov General Physics InstituteRussian Academy of ScienceMoscowRussian Federation
| | - Muhammad Usman Khan
- Bioproducts Sciences and Engineering Laboratory (BSEL)Washington State UniversityRichlandWasingtonUSA
- Department of Energy Systems EngineeringFaculty of Agricultural Engineering and TechnologyUniversity of AgricultureFaisalabadPakistan
| | | | - Haiyuan Zhang
- Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchunChina
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144
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Katarzyńska-Banasik D, Grzesiak M, Kowalik K, Sechman A. Administration of silver nanoparticles affects ovarian steroidogenesis and may influence thyroid hormone metabolism in hens (Gallus domesticus). ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 208:111427. [PMID: 33049449 DOI: 10.1016/j.ecoenv.2020.111427] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 09/22/2020] [Accepted: 09/27/2020] [Indexed: 05/11/2023]
Abstract
This study aimed to determine the in vivo effect of silver nanoparticles (AgNPs) on the concentration of sex steroids (progesterone - P4, estradiol - E2, testosterone - T) and thyroid hormones (thyroxine - T4, triiodothyronine - T3) in the blood plasma as well as the messenger ribonucleic acid (mRNA) and protein expression of HSD3β, CYP17A1 and CYP19A1 enzymes and steroid hormone concentrations in chicken ovarian follicles. AgNPs did not affect serum steroid hormone levels, but increased T3 levels depending on the size and concentration of AgNPs. At the level of ovarian tissues, AgNPs: (i) affected the levels of E2 and T in prehierachical follicles; (ii) reduced the expression of CYP19A1 mRNA and protein and consequently diminished E2 concentration in small white follicles; and (iii) increased the expression of CYP17A1 mRNA in large white follicles, without changing its protein expression. The results indicate that AgNPs affect chicken ovarian steroidogenesis. The effects of AgNPs depend on exposure time, the type of follicle and the degree of its development and are associated with the modulation of steroidogenic gene expression and E2 and T synthesis. Prehierachical follicles seem to be more susceptible to AgNPs than preovulatory ones. In conclusion, AgNPs by targeting the chicken ovary may indirectly influence the selection processes of prehierarchical follicles to the pre-ovulatory hierarchy and disturb the ovarian steroidogenesis. Furthermore, AgNPs may affect thyroid hormone metabolism in different ways by size which in turn may influence energy homeostasis of the target cells.
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Affiliation(s)
- Dorota Katarzyńska-Banasik
- Department of Animal Physiology and Endocrinology, University of Agriculture in Krakow, Al. Mickiewicza 24/28, 30-059 Krakow, Poland.
| | - Małgorzata Grzesiak
- Department of Endocrinology, Institute of Zoology and Biomedical Research, Faculty of Biology, Jagiellonian University, Gronostajowa 9, 30-387 Krakow, Poland
| | - Kinga Kowalik
- Department of Animal Physiology and Endocrinology, University of Agriculture in Krakow, Al. Mickiewicza 24/28, 30-059 Krakow, Poland
| | - Andrzej Sechman
- Department of Animal Physiology and Endocrinology, University of Agriculture in Krakow, Al. Mickiewicza 24/28, 30-059 Krakow, Poland
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145
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Synthesis and characterization of silver and copper metal–organic hybrid nanomaterials and their biological application. Colloid Polym Sci 2021. [DOI: 10.1007/s00396-020-04788-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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146
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Mobed A, Hasanzadeh M, Seidi F. Anti-bacterial activity of gold nanocomposites as a new nanomaterial weapon to combat photogenic agents: recent advances and challenges. RSC Adv 2021; 11:34688-34698. [PMID: 35494766 PMCID: PMC9042813 DOI: 10.1039/d1ra06030a] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Accepted: 10/17/2021] [Indexed: 12/20/2022] Open
Abstract
Gold nanocomposites are being widely used in numerous biomedical applications owing to their excellent stability and miniaturization. Gold nanocomposites are notable because of their flexibility of functionalization and synthesis, ease of detection, and low toxicity. Cost-effectiveness, long-term stability, non-cytotoxicity, and biocompatibility are the main aspects of ideal nanocomposites. Antibacterial nanocomposites are being developed extensively in the food industry, environmental applications, and biological and medical devices. This review focuses on the applications of metal-based nanoparticles, mainly gold nanoparticles (AuNPs), as antibacterial agents in medical approaches. Additionally, the antibacterial mechanisms of AuNPs and their roles in fighting antibiotic-resistant microorganisms are highlighted in the present review. Gold nanocomposites are being widely used in numerous biomedical applications owing to their excellent stability and miniaturization.![]()
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Affiliation(s)
- Ahmad Mobed
- Aging Research Institute, Faculty of Medicine, Tabriz University of Medical Sciences, Iran
- Physical Medicine and Rehabilitation Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
- Pharmaceutical Analysis Recent Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohammad Hasanzadeh
- Pharmaceutical Analysis Recent Center, Tabriz University of Medical Sciences, Tabriz, Iran
- Nutrition Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Farzad Seidi
- Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, Nanjing Forestry University, Nanjing 210037, China
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147
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Synthesis of Silver Nanoparticles with Gemini Surfactants as Efficient Capping and Stabilizing Agents. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app11010154] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The scientific community has paid special attention to silver nanoparticles (AgNPs) in recent years due to their huge technological capacities, particularly in biomedical applications, such as antimicrobials, drug-delivery carriers, device coatings, imaging probes, diagnostic, and optoelectronic platforms. The most popular method of obtaining silver nanoparticles as a colloidal dispersion in aqueous solution is chemical reduction. The choice of the capping agent is particularly important in order to obtain the desired size distribution, shape, and dispersion rate of AgNPs. Gemini alkylammonium salts are named as multifunctional surfactants, and possess a wide variety of applications, which include their use as capping agents for metal nanoparticles synthesis. Because of the high antimicrobial activity of gemini surfactants, AgNPs stabilized by this kind of surfactant may possess unique and strengthened biocidal properties. The present paper presents the synthesis of AgNPs stabilized by gemini surfactants with hexadecyl substituent and variable structure of spacer, obtained via ecofriendly synthesis. UV-Vis spectroscopy and dynamic light scattering were used as analyzing tools in order to confirm physicochemical characterization of the AgNPs (characteristic UV-Vis bands, hydrodynamic diameter of NPs, polydispersity index (PDI)).
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148
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Characterization and Pharmacological Efficacy of Silver Nanoparticles Biosynthesized Using the Bark Extract of Garcinia Kola. J CHEM-NY 2020. [DOI: 10.1155/2020/2876019] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The delinquent peril of bacterial infections affecting human kind is becoming unbearable. This study was embarked on to investigate the antimicrobial activity of biosynthesized silver nanoparticles (AgNPs) using Garcinia kola bark extract against some bacteria strains. Fresh barks of Garcinia kola were obtained from the “Gbeleju” farm land in Irele town in Ondo state region of Nigeria. Exactly 0.4 g of previously pulverized bark of Garcinia kola was immersed into 20 mL of distilled water and heated at 60–70°C for 10 minutes yielding the extract. The biosynthesized nanoparticle was characterized with UV spectroscope, Fourier infrared spectroscope (FTIR), transmission electron microscope (TEM), and energy dispersive X-Ray analyzer (EDX). Then, 0.2 g of the silver nanoparticles was dissolved in 2 ml of water to yield 100 mg/ml of the stock solution which was further diluted for the antibacterial analysis via the disc diffusion method. The result obtained from the analytical characterization of the biosynthesized silver nanoparticles revealed a spherical particle shape, particle size in the range of 12.23 to 27.90 nm with an average size of 20.07 nm via TEM analysis. The FTIR analysis confirmed the presence of -OH functional group for the stabilization of the silver nanoparticles formed due to the broad peak at wavelength 3324.52 and 3344.21 cm−1. The EDX analysis revealed carbon, nitrogen, oxygen, aluminum, potassium, copper, and silver as the elements present in the nanoparticles. Results obtained from the antibacterial screening of the biosynthesized AgNPs showed inhibitory potential that are capable of obstructing the growth of the test bacteria. This investigation ascertained the biosynthesized AgNPs as a remedy for curing bacterial infections and also a promising source for novel antibacterial agent.
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149
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Narayanasamy K, Sekar SS, R R, R SK, Roy D, Dinakaran K. Synthesis and characterization of Ag/Au-MnO2 nanostructure embedded polyvinylidine difluoride high K nanocomposites. INTERNATIONAL JOURNAL OF POLYMER ANALYSIS AND CHARACTERIZATION 2020. [DOI: 10.1080/1023666x.2020.1840864] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
| | | | - Rajakumari R
- Department of Chemistry, Thiruvalluvar University, Vellore, India
| | - Suresh Kumar R
- Department of Chemistry, R. V. Govt Arts College, Chengalpattu, India
| | - Debmalya Roy
- Directorate of Nanomaterials and Technologies, DMSRDE, Kanpur, India
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150
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Farjadian F, Akbarizadeh AR, Tayebi L. Synthesis of novel reducing agent for formation of metronidazole-capped silver nanoparticle and evaluating antibacterial efficiency in gram-positive and gram-negative bacteria. Heliyon 2020; 6:e04747. [PMID: 32913906 PMCID: PMC7472853 DOI: 10.1016/j.heliyon.2020.e04747] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2019] [Revised: 03/27/2020] [Accepted: 08/14/2020] [Indexed: 12/22/2022] Open
Abstract
In this study, a new type of silver nanoparticles capped with metronidazolium based ionic liquid is synthesized. By this aim, metronidazole is altered to ionic-liquid type structure with citrate counter ion as reducing agent. The produced reducing agent was characterized using 1HNMR and 13CNMR and FT-IR. The capability of metronidazolium-based reducing agent in formation and capping silver nanoparticles was examined in a chemical reaction. More specifically, synthesized silver nanoparticles were synthesized and capped with metronidazolium-citrate based ionic liquid, while the formation of particles in 48 h was monitored by UV-Vis spectroscopy. Fourier transform infrared spectroscopy showed the presence of capping agents around silver nanoparticles. The amount of metronidazolium and citrate as capping agents was determined by thermal gravimetric analysis. The prepared crystalline structure of silver nanoparticles was proved by X-ray diffraction spectroscopy. PSA analysis and TEM was performed to determine the size of particles. The synthesized silver nanoparticle has the potential to be used as an antibacterial agent in preparation of wound dressing with extra capability and efficacy in aerobic and anaerobic bacterium. In this regard, the antibacterial efficacy of discs from different concentration of silver nanoparticles in calcium alginate medium were evaluated in Gram-negative and Gram-positive bacterium.
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Affiliation(s)
- Fatemeh Farjadian
- Pharmaceutical Sciences Research Center, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran
- Corresponding author.
| | - Amin Reza Akbarizadeh
- Department of Pharmacology and Toxicology, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Lobat Tayebi
- School of Dentistry, Marquette University, Milwaukee, USA
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