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Fiorati A, Bellingeri A, Punta C, Corsi I, Venditti I. Silver Nanoparticles for Water Pollution Monitoring and Treatments: Ecosafety Challenge and Cellulose-Based Hybrids Solution. Polymers (Basel) 2020; 12:E1635. [PMID: 32717864 PMCID: PMC7465245 DOI: 10.3390/polym12081635] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 07/16/2020] [Accepted: 07/20/2020] [Indexed: 12/26/2022] Open
Abstract
Silver nanoparticles (AgNPs) are widely used as engineered nanomaterials (ENMs) in many advanced nanotechnologies, due to their versatile, easy and cheap preparations combined with peculiar chemical-physical properties. Their increased production and integration in environmental applications including water treatment raise concerns for their impact on humans and the environment. An eco-design strategy that makes it possible to combine the best material performances with no risk for the natural ecosystems and living beings has been recently proposed. This review envisages potential hybrid solutions of AgNPs for water pollution monitoring and remediation to satisfy their successful, environmentally safe (ecosafe) application. Being extremely efficient in pollutants sensing and degradation, their ecosafe application can be achieved in combination with polymeric-based materials, especially with cellulose, by following an eco-design approach. In fact, (AgNPs)-cellulose hybrids have the double advantage of being easily produced using recycled material, with low costs and possible reuse, and of being ecosafe, if properly designed. An updated view of the use and prospects of these advanced hybrids AgNP-based materials is provided, which will surely speed their environmental application with consequent significant economic and environmental impact.
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Affiliation(s)
- Andrea Fiorati
- Department of Chemistry, Materials, and Chemical Engineering “G. Natta” and INSTM Local Unit, Politecnico di Milano, Piazza Leonardo da Vinci 32, I-20133 Milano, Italy; (A.F.); (C.P.)
| | - Arianna Bellingeri
- Department of Physical, Earth and Environmental Sciences and INSTM Local Unit, University of Siena, 53100 Siena, Italy; (A.B.); (I.C.)
| | - Carlo Punta
- Department of Chemistry, Materials, and Chemical Engineering “G. Natta” and INSTM Local Unit, Politecnico di Milano, Piazza Leonardo da Vinci 32, I-20133 Milano, Italy; (A.F.); (C.P.)
| | - Ilaria Corsi
- Department of Physical, Earth and Environmental Sciences and INSTM Local Unit, University of Siena, 53100 Siena, Italy; (A.B.); (I.C.)
| | - Iole Venditti
- Department of Sciences, Roma Tre University of Rome, via della Vasca Navale 79, 00146 Rome, Italy
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452
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Wang Y, Wei S, Wang K, Wang Z, Duan J, Cui L, Zheng H, Wang Y, Wang S. Evaluation of biosynthesis parameters, stability and biological activities of silver nanoparticles synthesized by Cornus Officinalis extract under 365 nm UV radiation. RSC Adv 2020; 10:27173-27182. [PMID: 35515803 PMCID: PMC9055510 DOI: 10.1039/d0ra04482b] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Accepted: 07/13/2020] [Indexed: 12/28/2022] Open
Abstract
Since silver nanoparticles (AgNPs) synthesized by using plant extracts revealed varied biological activities, the green synthesis of AgNPs has attracted considerable attention. Although the green synthesis of AgNPs have been accomplished by using the extracts of Cornus Officinalis, which is a traditional Chinese medicine and exhibits a wide spectrum of phytochemicals. The effects of biosynthesis parameters on reducing reaction, stability and more broad biological activities of so-prepared AgNPs did not been evaluated. In this paper, we firstly assessed the effects of UV radiation, pH, material proportion and radiation times on the green synthesis of AgNPs under 365 nm UV radiation by UV-visible spectrum and dynamic light scattering (DLS) analysis. The results showed that UV radiation could accelerate the formation of AgNPs and influence the average size below pH 7.0, and the size of so-prepared AgNPs were sensitive to the pH and material proportion, but no obvious changes to UV radiation times, offering a size-controlled synthetic method for AgNPs. The further X-ray diffraction (XRD), transmission electron microscopy (TEM) and DLS studies showed AgNPs synthesized at pH 7.0, extract: AgNO3 = 1 : 1 and after 4 h UV radiation were a face-centered cubic (fcc) structure and both spherical and polygonal in shape with average particle size of 64.5 ± 0.3 nm existed in a monodispersed form. Subsquently, the stability of AgNPs was analyzed by zeta potential (-24.8 mV) and the average size measurement after 30 days storage (63.3 ± 0.4 nm), revealing a high degree of stability. Lastly, the investigation of biological activities showed that the biosynthesized AgNPs had potent antioxidant activity, antimicrobial activity against both S. aureus and E. coli as well as anticancer activity against HCT116 and HepG2 cell lines but negligible cytotoxicity against SW620. And the internalization of biosynthesized AgNPs inside the bacterial cell was evaluated by flow cytometric analysis, where the SSC values have significant increase after treating with nanoparticles. These results confirmed that the biosynthesis parameters on the green synthesis of AgNPs by using Cornus Officinalis extract also played pivotal roles and so-prepared AgNPs would be useful for the development of new alternative antioxidant, antimicrobial and anticancer agents in biomedicine.
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Affiliation(s)
- Yinghui Wang
- College of Science, Chang'an University Xi'an 710064 China
| | - Simin Wei
- Shaanxi Collaborative Innovation Center of Chinese Medicine Resources Industrialization, State Key Laboratory of Research & Development of Characteristic Qin Medicine Resources, Shaanxi Innovative Drug Research Center, Shaanxi University of Chinese Medicine Xianyang 712083 China
| | - Kang Wang
- College of Science, Chang'an University Xi'an 710064 China
| | - Zhe Wang
- Shaanxi Collaborative Innovation Center of Chinese Medicine Resources Industrialization, State Key Laboratory of Research & Development of Characteristic Qin Medicine Resources, Shaanxi Innovative Drug Research Center, Shaanxi University of Chinese Medicine Xianyang 712083 China
| | - Jinwei Duan
- College of Science, Chang'an University Xi'an 710064 China
| | - Lin Cui
- College of Science, Chang'an University Xi'an 710064 China
| | - Huayu Zheng
- College of Science, Chang'an University Xi'an 710064 China
| | - Ying Wang
- College of Science, Chang'an University Xi'an 710064 China
| | - Shanshan Wang
- College of Science, Chang'an University Xi'an 710064 China
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453
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Dolatabadi A, Noorbazargan H, Khayam N, Moulavi P, Zamani N, Asghari Lalami Z, Ashrafi F. Ecofriendly Biomolecule-Capped Bifidobacterium bifidum-Manufactured Silver Nanoparticles and Efflux Pump Genes Expression Alteration in Klebsiella pneumoniae. Microb Drug Resist 2020; 27:247-257. [PMID: 32635796 DOI: 10.1089/mdr.2019.0366] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Background: Klebsiella pneumoniae is currently considered as an immediate threat to human health due to its various multidrug efflux pumps. Microbially synthesized silver nanoparticles (AgNPs) are an attractive and eco-friendly approach to prevent antibiotic resistance in bacteria. In the present study, we compared the inhibitory effect of both commercial and green AgNPs by Bifidobacterium bifidum on OxqAB efflux pump genes in ciprofloxacin-resistant strains of K. pneumoniae. Materials and Methods: AgNPs were characterized by ultraviolet-visible spectrophotometer, Fourier transform infrared spectroscopy, X-ray diffraction, zeta potential, transmission electron microscopy, and scanning electron microscopy. Antibiogram was used to identify resistant isolates and the effect of the biosynthesized AgNPs against OxqAB efflux pump strains was assessed by the minimum inhibitory concentration (MIC) method. The expression levels of oxqAB genes were evaluated using real-time polymerase chain reaction (PCR) followed by exposure to subMICs of the AgNPs. Results: PCR results showed that 25 strains had OxqAB efflux pump and the MIC method indicated that AgNPs had an inhibitory effect on all resistant strains with OxqAB efflux pump. The efficacy of the synthetic nanoparticles was assessed by comparing the antiefflux pump activity with commercial AgNPs. In ciprofloxacin-resistant isolates, the oxqAB genes expression levels reduced in the subMIC of both AgNPs, whereas biosynthesized AgNPs had greater bactericidal effects compared with the commercial AgNPs. Conclusions: Efflux pumps could be an attractive target for our biosynthesized AgNPs. The oxqAB genes expression levels reduced in subMIC of both AgNPs, whereas biosynthesized AgNPs had greater bactericidal effects than the commercial AgNPs.
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Affiliation(s)
- Aghigh Dolatabadi
- Department of Biology, Tehran North Branch, Islamic Azad University, Tehran, Iran
| | - Hassan Noorbazargan
- Department of Biotechnology, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Nazanin Khayam
- Department of Biology, Tehran North Branch, Islamic Azad University, Tehran, Iran
| | - Pooria Moulavi
- Department of Biology, Tehran North Branch, Islamic Azad University, Tehran, Iran
| | - Naghmeh Zamani
- Department of Biology, Tehran North Branch, Islamic Azad University, Tehran, Iran
| | | | - Fatemeh Ashrafi
- Department of Biology, Tehran North Branch, Islamic Azad University, Tehran, Iran
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454
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Gaurav I, Singh T, Thakur A, Kumar G, Rathee P, Kumari P, Sweta K. Synthesis, In-Vitro and In-Silico Evaluation of Silver Nanoparticles with Root Extract of Withania somnifera for Antibacterial Activity via Binding of Penicillin-Binding Protein-4. Curr Pharm Biotechnol 2020; 21:1674-1687. [PMID: 32614743 DOI: 10.2174/1389201021666200702152000] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 04/24/2020] [Accepted: 05/08/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND Metal Nanoparticles (NPs) have been widely used for various applications in biomedical sciences, including in drug delivery, and as therapeutic agents, but limited owing to their toxicity towards the healthy tissue. This warrants an alternative method, which can achieve the desired activity with much reduced or no toxicity. Being a biological product, Withania somnifera (W. somnifera) is environment friendly, besides being less toxic as compared to metal-based NPs. However, the exact mechanism of action of W. somnifera for its antibacterial activities has not been studied so far. OBJECTIVE To develop "silver nanoparticles with root extract of W. somnifera (AgNPs-REWS)" for antimicrobial and anticancer activities. Furthermore, the analysis of their mechanism of action will be studied. METHODS Using the in-silico approach, the molecular docking study was performed to evaluate the possible antibacterial mechanism of W. somnifera phytochemicals such as Anaferine, Somniferine, Stigmasterol, Withaferin A, Withanolide- A, G, M, and Withanone by the inhibition of Penicillin- Binding Protein 4 (PBP4). Next, we utilized a bottom-up approach for the green synthesis of AgNPs- REWS, performed an in-detail phytochemical analysis, confirmed the AgNPs-REWS by SEM, UVvisible spectroscopy, XRD, FT-IR, and HPLC. Eventually, we examined their antibacterial activity. RESULTS The result of molecular docking suggests that WS phytochemicals (Somniferine, Withaferin A, Withanolide A, Withanolide G, Withanolide M, and Withanone) possess the higher binding affinity toward the active site of PBP4 as compared to the Ampicillin (-6.39 kcal/mol) reference molecule. These phytochemicals predicted as potent inhibitors of PBP4. Next, as a proof-of-concept, AgNPs- REWS showed significant antibacterial effect as compared to crude, and control; against Xanthomonas and Ralstonia species. CONCLUSION The in-silico and molecular docking analysis showed that active constituents of W. somnifera such as Somniferine, Withaferin A, Withanolide A, Withanolide G, Withanolide M, and Withanone possess inhibition potential for PBP4 and are responsible for the anti-bacterial property of W. somnifera extract. This study also establishes that AgNPs via the green synthesis with REWS showed enhanced antibacterial activity towards pathogenic bacteria.
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Affiliation(s)
- Isha Gaurav
- Department of Botany, Magadh University, Bodh Gaya, Bihar, India
| | - Tanuja Singh
- Department of Botany, Thakur Prasad Singh College (Patliputra University), Patna, Bihar, India
| | - Abhimanyu Thakur
- Department of Pharmaceutical Sciences and Technology, Birla Institute of Technology Mesra, Ranchi, Jharkhand, India
| | - Gaurav Kumar
- School of Biological and Biomedical Sciences, Galgotias University, Greater Noida, Uttar Pradesh, India
| | - Parth Rathee
- Department of Chemistry, University of Miami, Coral Gables, Florida, United States
| | - Puja Kumari
- Department of Pharmaceutical Sciences and Technology, Birla Institute of Technology Mesra, Ranchi, Jharkhand, India
| | - Kumari Sweta
- Department of Pharmaceutical Sciences and Technology, Birla Institute of Technology Mesra, Ranchi, Jharkhand, India
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455
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Tuning of hydrogen peroxide etching during the synthesis of silver nanoparticles. An application of triangular nanoplates as plasmon sensors for Hg2+ in aqueous solution. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.113238] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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456
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Ayanwale AP, Ruíz-Baltazar ADJ, Espinoza-Cristóbal L, Reyes-López SY. Bactericidal Activity Study of ZrO 2-Ag 2O Nanoparticles. Dose Response 2020; 18:1559325820941374. [PMID: 32782447 PMCID: PMC7383718 DOI: 10.1177/1559325820941374] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2020] [Revised: 05/25/2020] [Accepted: 05/27/2020] [Indexed: 11/28/2022] Open
Abstract
In view of the continuous resistance to antibacterial agents by bacteria and the existing problems of silver nanoparticles as an antibacterial agent, this study reports on the synthesis of pure zirconium oxide, silver oxide, and ZrO2-Ag2O nanoparticles by sol-gel method. The nanoparticles were analyzed and tested for their antibacterial activity against gram-positive bacteria of Bacillus subtilis, Streptococcus mutans, Staphylococcus aureus, and gram-negative of Escherichia coli, Pseudomonas aeruginosa, and Klebsiella oxytoca. X-ray diffraction showed the monoclinic ZrO2, cubic Ag2O, and peaks corresponding to ZrO2 and Ag2O in their mixed samples. Scanning electron microscopy showed spherically shaped nanoparticles while dynamic light scattering analysis showed ZrO2 (76 nm), Ag2O (50 nm), and ZrO2-Ag2O samples between 14 and 42 nm. The Fourier Transformed Infrared spectroscopy spectra of ZrO2 gave bands at 480 cm-1 to 750 cm-1 (M-O stretching) with Ag2O at 580 cm-1, while ZrO2-Ag2O samples showed bands at 760 cm-1. The screening by agar diffusion assay revealed a pronounced increase in the antibacterial activity of ZrO2-Ag2O against all the tested bacteria when compared with the pure ZrO2 and Ag2O. The improved antibacterial activity of ZrO2-Ag2O largely results from the chemical stability conferred on it by the ZrO2 as observed from the zeta potential measurement.
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Affiliation(s)
- Ayodeji Precious Ayanwale
- Instituto de Ciencias Biomédicas, Universidad Autónoma de Ciudad Juárez, Envolvente del PRONAF y Estocolmo s/n, Ciudad Juárez, Chih, México
| | - Alvaro de Jesús Ruíz-Baltazar
- CONACYT-Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Boulevard Juriquilla, Juriquilla Querétaro, QRO, México
| | - León Espinoza-Cristóbal
- Instituto de Ciencias Biomédicas, Universidad Autónoma de Ciudad Juárez, Envolvente del PRONAF y Estocolmo s/n, Ciudad Juárez, Chih, México
| | - Simón Yobanny Reyes-López
- Instituto de Ciencias Biomédicas, Universidad Autónoma de Ciudad Juárez, Envolvente del PRONAF y Estocolmo s/n, Ciudad Juárez, Chih, México
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457
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Zielińska A, Costa B, Ferreira MV, Miguéis D, Louros JMS, Durazzo A, Lucarini M, Eder P, V. Chaud M, Morsink M, Willemen N, Severino P, Santini A, Souto EB. Nanotoxicology and Nanosafety: Safety-By-Design and Testing at a Glance. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:E4657. [PMID: 32605255 PMCID: PMC7369733 DOI: 10.3390/ijerph17134657] [Citation(s) in RCA: 81] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Revised: 06/11/2020] [Accepted: 06/23/2020] [Indexed: 01/01/2023]
Abstract
This review offers a systematic discussion about nanotoxicology and nanosafety associated with nanomaterials during manufacture and further biomedical applications. A detailed introduction on nanomaterials and their most frequently uses, followed by the critical risk aspects related to regulatory uses and commercialization, is provided. Moreover, the impact of nanotoxicology in research over the last decades is discussed, together with the currently available toxicological methods in cell cultures (in vitro) and in living organisms (in vivo). A special focus is given to inorganic nanoparticles such as titanium dioxide nanoparticles (TiO2NPs) and silver nanoparticles (AgNPs). In vitro and in vivo case studies for the selected nanoparticles are discussed. The final part of this work describes the significance of nano-security for both risk assessment and environmental nanosafety. "Safety-by-Design" is defined as a starting point consisting on the implementation of the principles of drug discovery and development. The concept "Safety-by-Design" appears to be a way to "ensure safety", but the superficiality and the lack of articulation with which it is treated still raises many doubts. Although the approach of "Safety-by-Design" to the principles of drug development has helped in the assessment of the toxicity of nanomaterials, a combination of scientific efforts is constantly urgent to ensure the consistency of methods and processes. This will ensure that the quality of nanomaterials is controlled and their safe development is promoted. Safety issues are considered strategies for discovering novel toxicological-related mechanisms still needed to be promoted.
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Affiliation(s)
- Aleksandra Zielińska
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Coimbra, Pólo das Ciências da Saúde, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal; (A.Z.); (B.C.); (M.V.F.); (D.M.); (J.M.S.L.)
- Institute of Human Genetics, Polish Academy of Sciences, Strzeszyńska 32, 60-479 Poznań, Poland
| | - Beatriz Costa
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Coimbra, Pólo das Ciências da Saúde, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal; (A.Z.); (B.C.); (M.V.F.); (D.M.); (J.M.S.L.)
| | - Maria V. Ferreira
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Coimbra, Pólo das Ciências da Saúde, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal; (A.Z.); (B.C.); (M.V.F.); (D.M.); (J.M.S.L.)
| | - Diogo Miguéis
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Coimbra, Pólo das Ciências da Saúde, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal; (A.Z.); (B.C.); (M.V.F.); (D.M.); (J.M.S.L.)
| | - Jéssica M. S. Louros
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Coimbra, Pólo das Ciências da Saúde, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal; (A.Z.); (B.C.); (M.V.F.); (D.M.); (J.M.S.L.)
| | - Alessandra Durazzo
- CREA-Research Centre for Food and Nutrition, Via Ardeatina 546, 00178 Rome, Italy; (A.D.); (M.L.)
| | - Massimo Lucarini
- CREA-Research Centre for Food and Nutrition, Via Ardeatina 546, 00178 Rome, Italy; (A.D.); (M.L.)
| | - Piotr Eder
- Department of Gastroenterology, Dietetics and Internal Diseases, Poznan University of Medical Sciences, Przybyszewskiego 49, 60-355 Poznań, Poland;
| | - Marco V. Chaud
- Laboratory of Biomaterials and Nanotechnology, University of Sorocaba—UNISO, Sorocaba 18023-000, Brazil;
| | - Margreet Morsink
- Center for Biomedical Engineering, Department of Medicine, Brigham and Women& Hospital, Harvard Medical School, 65 Landsdowne Street, Cambridge, MA 02139, USA; (M.M.); (N.W.); (P.S.)
- Translational Liver Research, Department of Medical Cell BioPhysics, Technical Medical Centre, Faculty of Science and Technology, University of Twente, 7522 NB Enschede, The Netherlands
- Department of Developmental BioEngineering, Faculty of Science and Technology, Technical Medical Centre, University of Twente, 7522 NB Enschede, The Netherlands
| | - Niels Willemen
- Center for Biomedical Engineering, Department of Medicine, Brigham and Women& Hospital, Harvard Medical School, 65 Landsdowne Street, Cambridge, MA 02139, USA; (M.M.); (N.W.); (P.S.)
- Department of Developmental BioEngineering, Faculty of Science and Technology, Technical Medical Centre, University of Twente, 7522 NB Enschede, The Netherlands
| | - Patrícia Severino
- Center for Biomedical Engineering, Department of Medicine, Brigham and Women& Hospital, Harvard Medical School, 65 Landsdowne Street, Cambridge, MA 02139, USA; (M.M.); (N.W.); (P.S.)
- Nanomedicine and Nanotechnology Laboratory (LNMed), Institute of Technology and Research (ITP), University of Tiradentes (Unit), Av. Murilo Dantas, 300, Aracaju 49010-390, Brazil
- Tiradentes Institute, 150 Mt Vernon St, Dorchester, MA 02125, USA
| | - Antonello Santini
- Department of Pharmacy, University of Napoli Federico II, 80131 Napoli, Italy
| | - Eliana B. Souto
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Coimbra, Pólo das Ciências da Saúde, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal; (A.Z.); (B.C.); (M.V.F.); (D.M.); (J.M.S.L.)
- CEB—Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
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458
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Lee EM, Lee J, Kim Y, Yi KS, Cho J, Kim J, An JM, Lee D, Kim SJ, An E, Hong YJ, Jo H, Lee SH, Jung Y, Choi CH, Kang JS, Hur J, Kim D. Hybrid Composite of Silver Nanoparticle-Porous Silicon Microparticles as an Image-Guided Localization Agent for Computed Tomography Scan of the Lungs. ACS Biomater Sci Eng 2020; 6:4390-4396. [PMID: 33455188 DOI: 10.1021/acsbiomaterials.0c00611] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
A hybrid composite of silver nanoparticles (AgNPs) and porous silicon microparticles (pSiMPs) was developed and applied for the computed tomography (CT) scanning of the lungs as an image-guided localization agent. We confirmed the grafting of AgNPs on oxidized pSiMPs template using various analytical equipment, including a scanning electron microscope (SEM), Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), and energy-dispersive X-ray spectroscopy (EDS). The hybrid composite showed a high CT contrast intensity (>1000 HU) that enabled us to produce and view images of the lungs. In addition, it showed the ability to maintain a strong CT signal at the injected area of the rabbit's lungs, up to an hour, without spreading. The lack of toxicity and immune response indicated that the composite could be fully utilized as a new image-guided localization agent of CT scans for lung cancer surgery.
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Affiliation(s)
| | | | | | - Kyung Sik Yi
- Department of Radiology, Chungbuk National University, Hospital, and Chungbuk National University College of Medicine and Medical Research Institute, Cheongju-si 28644, Republic of Korea
| | - Janggeun Cho
- Department of Radiology, Chungbuk National University, Hospital, and Chungbuk National University College of Medicine and Medical Research Institute, Cheongju-si 28644, Republic of Korea
| | | | | | | | | | | | | | | | | | | | - Chi-Hoon Choi
- Department of Radiology, Chungbuk National University, Hospital, and Chungbuk National University College of Medicine and Medical Research Institute, Cheongju-si 28644, Republic of Korea
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459
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The Effect of Nanosizing on the Oxidation of Partially Oxidized Copper Nanoparticles. MATERIALS 2020; 13:ma13122878. [PMID: 32604933 PMCID: PMC7345119 DOI: 10.3390/ma13122878] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 06/22/2020] [Accepted: 06/25/2020] [Indexed: 11/16/2022]
Abstract
Copper nanoparticles are of great interest in various applications, such as catalysis, cooling fluids, conductive inks or for their antibacterial activity. In this paper, the thermal behavior of copper nanoparticles was studied using thermogravimetry, differential thermal analysis and differential scanning calorimetry. Original Cu samples as well as the products of oxidation were analysed by X-ray diffraction, scanning/transmission electron microscopy and energy dispersive spectroscopy. A step-by-step oxidation mechanism during the oxidation of Cu nano-powders was observed. The Cu-nano oxidation starts slightly above 150 °C when bulk copper does not yet react. The dominant oxidation product in the first step is Cu2O while CuO was identified as the final state of oxidation. Our results confirm an easier oxidation process of Cu-nano than Cu-micro particles, which must be attributed to kinetic not thermodynamic aspects of oxidation reactions.
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460
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Pham XH, Kim J, Jun BH. Silver Nano/Microparticles: Modification and Applications 2.0. Int J Mol Sci 2020; 21:E4395. [PMID: 32575707 PMCID: PMC7349777 DOI: 10.3390/ijms21124395] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Accepted: 06/19/2020] [Indexed: 01/18/2023] Open
Abstract
Currently, nano/microparticles are widely used in various fields [...].
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Affiliation(s)
| | | | - Bong-Hyun Jun
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 143-701, Korea; (X.-H.P.); (J.K.)
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461
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Some S, Sarkar B, Biswas K, Jana TK, Bhattacharjya D, Dam P, Mondal R, Kumar A, Deb AK, Sadat A, Saha S, Kati A, Ocsoy I, Franco OL, Mandal A, Mandal S, Mandal AK, İnce İA. Bio-molecule functionalized rapid one-pot green synthesis of silver nanoparticles and their efficacy toward the multidrug resistant (MDR) gut bacteria of silkworms ( Bombyx mori). RSC Adv 2020; 10:22742-22757. [PMID: 35514551 PMCID: PMC9054587 DOI: 10.1039/d0ra03451g] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Accepted: 05/20/2020] [Indexed: 01/29/2023] Open
Abstract
The present study aimed to synthesise bio-molecule functionalized silver nanoparticles (AgNPs) using leaf extract from mulberry variety S-1635 (Morus alba L.) and to explore its antibacterial efficacy against multidrug resistant (MDR) gut bacteria isolated from natural infection observed from silkworm larvae in rearing conditions. AgNPs formation was established by surface plasmon resonance at 480 nm. The crystallinity of the synthesised AgNPs was checked by HR-TEM and XRD analysis. SEM and TEM characterisation further exhibited the spherical, monodispersed, well scattered nature of the AgNPs with an average particle size of 11.8 nm ± 2.8. The presence of (111), (200), (220) and (311) planes in Bragg's reflections confirmed the face-cantered-cubic crystalline silver. EDX analysis confirmed the presence of elemental silver. FT-IR spectra revealed functional groups were responsible for the reduction of silver ions. The zeta potential value of -17.3 mV and -25.6 mV was recorded in MH and DMEM/F-12 media, respectively. The LC-QTOF/MS and HRMS spectra disclosed the presence of bioactive compounds like flavonoid, gallic acid, and stigmasterol, which are probably involved in the reduction and functionalization of AgNPs. The antibacterial efficacy of bio-molecule functionalized AgNPs and the naked AgNPs was tested on Gram-positive and Gram-negative bacteria isolated from silkworms and characterized by using 16S rDNA and gyrB genes. The cytotoxicity of AgNPs was tested on WRL-68, HEK-293, ACHN, and HUH-7 cell lines using MTT assay. This study provides an insight into the application of bio-molecule functionalized AgNPs for combating various silkworm pathogens which severely affect the agro-rural economy of developing countries.
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Affiliation(s)
- Sudip Some
- Chemical Biology Laboratory, Department of Sericulture, Raiganj University Raiganj-733134 India
| | - Biraj Sarkar
- Department of Microbiology, Laboratory of Molecular Bacteriology, University of Calcutta 700019 India
| | - Kinkar Biswas
- Laboratory of Organic Synthesis, Department of Chemistry, Raiganj University Raiganj-733134 India
| | - Tushar K Jana
- Department of Physics, Vidyasagar University Midnapore-721102 India
| | - Debjoy Bhattacharjya
- Cytogenetics & Plant Biotechnology Research Unit, Department of Sericulture, Raiganj University Raiganj-733134 India
| | - Paulami Dam
- Chemical Biology Laboratory, Department of Sericulture, Raiganj University Raiganj-733134 India
| | - Rittick Mondal
- Chemical Biology Laboratory, Department of Sericulture, Raiganj University Raiganj-733134 India
| | - Anoop Kumar
- ANMOL Laboratory, Department of Biotechnology, North Bengal University Darjeeling-734013 India
| | - Apurba K Deb
- Department of Physics, Raiganj University Raiganj-733134 India
| | - Abdul Sadat
- Insect Ecology and Conservation Biology Laboratory, Department of Sericulture, Raiganj University Raiganj-733134 India
| | - Soumen Saha
- Cytogenetics & Plant Biotechnology Research Unit, Department of Sericulture, Raiganj University Raiganj-733134 India
| | - Ahmet Kati
- Department of Biotechnology, Institution of Health Sciences, University of Health Sciences Uskudar Istanbul 34668 Turkey
- Department of Medical Microbiology, School of Medicine, Acibadem Mehmet Ali Aydınlar University 34752 Ataşehir Istanbul Turkey
| | - Ismail Ocsoy
- Department of Analytical Chemistry, Faculty of Pharmacy, Erciyes University 38039 Kayseri Turkey
| | - Octavio L Franco
- S-INOVA Biotech, Post-Graduate Program in Biotechnology, Catholic University Dom Bosco Campo Grande Mato Grosso Do Sul Brazil
| | - Amitava Mandal
- Molecular Complexity Laboratory, Department of Chemistry, Raiganj University Raiganj-733134 India
| | - Sukhendu Mandal
- Department of Microbiology, Laboratory of Molecular Bacteriology, University of Calcutta 700019 India
| | - Amit Kumar Mandal
- Chemical Biology Laboratory, Department of Sericulture, Raiganj University Raiganj-733134 India
- Centre for Nanotechnology Sciences, Raiganj University Raiganj-733134 India
| | - İkbal Agah İnce
- Department of Medical Microbiology, School of Medicine, Acibadem Mehmet Ali Aydınlar University 34752 Ataşehir Istanbul Turkey
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Gonzalez-Serrano R, Dunne M, Rosselli R, Martin-Cuadrado AB, Grosboillot V, Zinsli LV, Roda-Garcia JJ, Loessner MJ, Rodriguez-Valera F. Alteromonas Myovirus V22 Represents a New Genus of Marine Bacteriophages Requiring a Tail Fiber Chaperone for Host Recognition. mSystems 2020; 5:e00217-20. [PMID: 32518192 PMCID: PMC7289586 DOI: 10.1128/msystems.00217-20] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Accepted: 05/20/2020] [Indexed: 12/24/2022] Open
Abstract
Marine phages play a variety of critical roles in regulating the microbial composition of our oceans. Despite constituting the majority of genetic diversity within these environments, there are relatively few isolates with complete genome sequences or in-depth analyses of their host interaction mechanisms, such as characterization of their receptor binding proteins (RBPs). Here, we present the 92,760-bp genome of the Alteromonas-targeting phage V22. Genomic and morphological analyses identify V22 as a myovirus; however, due to a lack of sequence similarity to any other known myoviruses, we propose that V22 be classified as the type phage of a new Myoalterovirus genus within the Myoviridae family. V22 shows gene homology and synteny with two different subfamilies of phages infecting enterobacteria, specifically within the structural region of its genome. To improve our understanding of the V22 adsorption process, we identified putative RBPs (gp23, gp24, and gp26) and tested their ability to decorate the V22 propagation strain, Alteromonas mediterranea PT11, as recombinant green fluorescent protein (GFP)-tagged constructs. Only GFP-gp26 was capable of bacterial recognition and identified as the V22 RBP. Interestingly, production of functional GFP-gp26 required coexpression with the downstream protein gp27. GFP-gp26 could be expressed alone but was incapable of host recognition. By combining size-exclusion chromatography with fluorescence microscopy, we reveal how gp27 is not a component of the final RBP complex but instead is identified as a new type of phage-encoded intermolecular chaperone that is essential for maturation of the gp26 RBP.IMPORTANCE Host recognition by phage-encoded receptor binding proteins (RBPs) constitutes the first step in all phage infections and the most critical determinant of host specificity. By characterizing new types of RBPs and identifying their essential chaperones, we hope to expand the repertoire of known phage-host recognition machineries. Due to their genetic plasticity, studying RBPs and their associated chaperones can shed new light onto viral evolution affecting phage-host interactions, which is essential for fields such as phage therapy or biotechnology. In addition, since marine phages constitute one of the most important reservoirs of noncharacterized genetic diversity on the planet, their genomic and functional characterization may be of paramount importance for the discovery of novel genes with potential applications.
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Affiliation(s)
| | - Matthew Dunne
- Institute of Food, Nutrition and Health, ETH Zurich, Zurich, Switzerland
| | - Riccardo Rosselli
- NIOZ Royal Netherlands Institute for Sea Research, Department of Marine Microbiology and Biogeochemistry, Utrecht University, Den Burg, The Netherlands
- Laboratory for Theoretical and Computer Studies of Biological Macromolecules and Genomes, Moscow Institute of Physics and Technology, Dolgoprudny, Russia
| | | | | | - Léa V Zinsli
- Institute of Food, Nutrition and Health, ETH Zurich, Zurich, Switzerland
| | - Juan J Roda-Garcia
- Evolutionary Genomics Group, Universidad Miguel Hernández, San Juan de Alicante, Spain
| | - Martin J Loessner
- Institute of Food, Nutrition and Health, ETH Zurich, Zurich, Switzerland
| | - Francisco Rodriguez-Valera
- Evolutionary Genomics Group, Universidad Miguel Hernández, San Juan de Alicante, Spain
- Laboratory for Theoretical and Computer Studies of Biological Macromolecules and Genomes, Moscow Institute of Physics and Technology, Dolgoprudny, Russia
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463
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Jiang L, Santiago I, Foord J. High-Yield Electrochemical Synthesis of Silver Nanoparticles by Enzyme-Modified Boron-Doped Diamond Electrodes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:6089-6094. [PMID: 32403933 DOI: 10.1021/acs.langmuir.0c00375] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
We report a novel electrochemical approach for synthesizing colloidal silver in an aqueous phase by a hemoglobin-modified boron-doped diamond electrode. The resulting Ag nanoparticles are within 10 nm in size and highly monodisperse with minimal electrode deposition. We also introduce a method for measuring the yield of synthesized nanoparticles using square-wave voltammetry as an alternative to UV-vis spectroscopy. More than 50% of the transferred electrons contributed directly to the formation of silver nanoparticles. This high yield indicates that such electrochemical synthesis is an efficient one-pot method for producing colloidal silver free of toxic reagents and offers a path toward green metal nanoparticle synthesis in solution. A comparative study using alternative electrodes, modifiers, and surfactants suggests a mechanism for the formation of silver nanoparticles mediated by hemoglobin-modified boron-doped diamond electrodes.
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Affiliation(s)
- Luyun Jiang
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K
| | - Ibon Santiago
- Physics Department, Technical University of Munich, Am Coulombwall 4a, 85748 Garching b. München, Germany
| | - John Foord
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K
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464
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Qin W, Wang CY, Ma YX, Shen MJ, Li J, Jiao K, Tay FR, Niu LN. Microbe-Mediated Extracellular and Intracellular Mineralization: Environmental, Industrial, and Biotechnological Applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e1907833. [PMID: 32270552 DOI: 10.1002/adma.201907833] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Revised: 01/09/2020] [Indexed: 06/11/2023]
Abstract
Microbe-mediated mineralization is ubiquitous in nature, involving bacteria, fungi, viruses, and algae. These mineralization processes comprise calcification, silicification, and iron mineralization. The mechanisms for mineral formation include extracellular and intracellular biomineralization. The mineral precipitating capability of microbes is often harnessed for green synthesis of metal nanoparticles, which are relatively less toxic compared with those synthesized through physical or chemical methods. Microbe-mediated mineralization has important applications ranging from pollutant removal and nonreactive carriers, to other industrial and biomedical applications. Herein, the different types of microbe-mediated biomineralization that occur in nature, their mechanisms, as well as their applications are elucidated to create a backdrop for future research.
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Affiliation(s)
- Wen Qin
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, 710032, Shaanxi, China
| | - Chen-Yu Wang
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, 710032, Shaanxi, China
| | - Yu-Xuan Ma
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, 710032, Shaanxi, China
| | - Min-Juan Shen
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, 710032, Shaanxi, China
| | - Jing Li
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, 710032, Shaanxi, China
| | - Kai Jiao
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, 710032, Shaanxi, China
| | - Franklin R Tay
- College of Graduate Studies, Augusta University, Augusta, GA, 30912, USA
| | - Li-Na Niu
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, 710032, Shaanxi, China
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465
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Lin Q, Lim JYC, Xue K, Yew PYM, Owh C, Chee PL, Loh XJ. Sanitizing agents for virus inactivation and disinfection. VIEW 2020; 1:e16. [PMID: 34766164 PMCID: PMC7267133 DOI: 10.1002/viw2.16] [Citation(s) in RCA: 99] [Impact Index Per Article: 24.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Revised: 04/02/2020] [Accepted: 04/05/2020] [Indexed: 01/19/2023] Open
Abstract
Viral epidemics develop from the emergence of new variants of infectious viruses. The lack of effective antiviral treatments for the new viral infections coupled with rapid community spread of the infection often result in major human and financial loss. Viral transmissions can occur via close human-to-human contact or via contacting a contaminated surface. Thus, careful disinfection or sanitization is essential to curtail viral spread. A myriad of disinfectants/sanitizing agents/biocidal agents are available that can inactivate viruses, but their effectiveness is dependent upon many factors such as concentration of agent, reaction time, temperature, and organic load. In this work, we review common commercially available disinfectants agents available on the market and evaluate their effectiveness under various application conditions. In addition, this work also seeks to debunk common myths about viral inactivation and highlight new exciting advances in the development of potential sanitizing agents.
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Affiliation(s)
- Qianyu Lin
- NUS Graduate School for Integrative Sciences and EngineeringNational University of SingaporeSingapore
| | - Jason Y. C. Lim
- Soft Materials DepartmentInstitution of Materials Research and EngineeringAgency for ScienceTechnology and Research (A*STAR)InnovisSingapore
| | - Kun Xue
- Soft Materials DepartmentInstitution of Materials Research and EngineeringAgency for ScienceTechnology and Research (A*STAR)InnovisSingapore
| | - Pek Yin Michelle Yew
- Soft Materials DepartmentInstitution of Materials Research and EngineeringAgency for ScienceTechnology and Research (A*STAR)InnovisSingapore
| | - Cally Owh
- Soft Materials DepartmentInstitution of Materials Research and EngineeringAgency for ScienceTechnology and Research (A*STAR)InnovisSingapore
| | - Pei Lin Chee
- Soft Materials DepartmentInstitution of Materials Research and EngineeringAgency for ScienceTechnology and Research (A*STAR)InnovisSingapore
| | - Xian Jun Loh
- Soft Materials DepartmentInstitution of Materials Research and EngineeringAgency for ScienceTechnology and Research (A*STAR)InnovisSingapore
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466
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Adeyemi JA, Sorgi CA, Machado ART, Ogunjimi AT, Gardinassi LGA, Nardini V, Faccioli LH, Antunes LMG, Barbosa F. Phospholipids modifications in human hepatoma cell lines (HepG2) exposed to silver and iron oxide nanoparticles. Arch Toxicol 2020; 94:2625-2636. [PMID: 32474618 DOI: 10.1007/s00204-020-02789-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Accepted: 05/20/2020] [Indexed: 12/25/2022]
Abstract
Metallic nanoparticles such as silver (Ag NPs) and iron oxide (Fe3O4 NPs) nanoparticles are high production volume materials due to their applications in various consumer products, and in nanomedicine. However, their inherent toxicities to human cells remain a challenge. The present study was aimed at combining lipidomics data with common phenotypically-based toxicological assays to gain better understanding into cellular response to Ag NPs and Fe3O4 NPs exposure. HepG2 cells were exposed to different concentrations (3.125, 6.25, 12.5, 25, 50 and 100 µg/ml) of the nanoparticles for 24 h, after which they were assayed for toxic effects using toxicological assays like cytotoxicity, mutagenicity, apoptosis and oxidative stress. The cell membrane phospholipid profile of the cells was also performed using shotgun tandem mass spectrometry. The results showed that nanoparticles exposure resulted in concentration-dependent cytotoxicity as well as reduced cytokinesis-block proliferation index (CBPI). Also, there was an increase in the production of ROS and superoxide anions in exposed cells compared to the negative control. The lipidomics data revealed that nanoparticles exposure caused a modulation of the phospholipidome of the cells. A total of 155 lipid species were identified, out of which the fold changes of 23 were significant. The high number of differentially changed phosphatidylcholine species could be an indication that inflammation is one of the major mechanisms of toxicity of the nanoparticles to the cells.
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Affiliation(s)
- Joseph A Adeyemi
- Department of Clinical Analyses, Toxicology and Food Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Avenida Do Café S/nº, Ribeirão Preto, São Paulo, 14040-903, Brazil. .,Department of Biology, School of Sciences, Federal University of Technology, P.M.B. 704, Akure, Ondo State, Nigeria.
| | - Carlos Arterio Sorgi
- Department of Clinical Analyses, Toxicology and Food Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Avenida Do Café S/nº, Ribeirão Preto, São Paulo, 14040-903, Brazil
| | - Ana Rita Thomazela Machado
- Department of Clinical Analyses, Toxicology and Food Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Avenida Do Café S/nº, Ribeirão Preto, São Paulo, 14040-903, Brazil
| | - Abayomi T Ogunjimi
- Department of Pharmaceutical Sciences and Experimental Therapeutics, College of Pharmacy, University of Iowa, 115 S Grand Avenue, Iowa City, Iowa, USA
| | - Luiz Gustavo Araujo Gardinassi
- Department of Clinical Analyses, Toxicology and Food Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Avenida Do Café S/nº, Ribeirão Preto, São Paulo, 14040-903, Brazil
| | - Viviani Nardini
- Department of Clinical Analyses, Toxicology and Food Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Avenida Do Café S/nº, Ribeirão Preto, São Paulo, 14040-903, Brazil
| | | | - Lusania Maria Greggi Antunes
- Department of Clinical Analyses, Toxicology and Food Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Avenida Do Café S/nº, Ribeirão Preto, São Paulo, 14040-903, Brazil
| | - Fernando Barbosa
- Department of Clinical Analyses, Toxicology and Food Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Avenida Do Café S/nº, Ribeirão Preto, São Paulo, 14040-903, Brazil.
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467
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Krce L, Šprung M, Rončević T, Maravić A, Čikeš Čulić V, Blažeka D, Krstulović N, Aviani I. Probing the Mode of Antibacterial Action of Silver Nanoparticles Synthesized by Laser Ablation in Water: What Fluorescence and AFM Data Tell Us. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E1040. [PMID: 32485869 PMCID: PMC7352602 DOI: 10.3390/nano10061040] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 05/26/2020] [Accepted: 05/27/2020] [Indexed: 12/17/2022]
Abstract
We aim to elucidate the mode of antibacterial action of the laser-synthesized silver colloid against Escherichia coli. Membrane integrity was studied by flow cytometry, while the strain viability of the treated culture was determined by plating. The spectrofluorometry was used to obtain the time development of the reactive oxygen species (ROS) inside the nanoparticle-treated bacterial cells. An integrated atomic force and bright-field/fluorescence microscopy system enabled the study of the cell morphology, Young modulus, viability, and integrity before and during the treatment. Upon lethal treatment, not all bacterial cells were shown to be permeabilized and have mostly kept their morphology with an indication of cell lysis. Young modulus of untreated cells was shown to be distinctly bimodal, with randomly distributed softer parts, while treated cells exhibited exponential softening of the stiffer parts in time. Silver nanoparticles and bacteria have shown a masking effect on the raw fluorescence signal through absorbance and scattering. The contribution of cellular ROS in the total fluorescence signal was resolved and it was proven that the ROS level inside the lethally treated cells is not significant. It was found that the laser-synthesized silver nanoparticles mode of antibacterial action includes reduction of the cell's Young modulus in time and subsequently the cell leakage.
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Affiliation(s)
- Lucija Krce
- Department of Physics, Faculty of Science, University of Split, Ruđera Boškovića 33, 21000 Split, Croatia;
| | - Matilda Šprung
- Department of Chemistry, Faculty of Science, University of Split, Ruđera Boškovića 33, 21000 Split, Croatia;
| | - Tomislav Rončević
- Department of Biology, Faculty of Science, University of Split, Ruđera Boškovića 33, 21000 Split, Croatia; (T.R.); (A.M.)
| | - Ana Maravić
- Department of Biology, Faculty of Science, University of Split, Ruđera Boškovića 33, 21000 Split, Croatia; (T.R.); (A.M.)
| | - Vedrana Čikeš Čulić
- Department of Medical Chemistry and Biochemistry, School of Medicine, University of Split, Šoltanska ulica 2, 21000 Split, Croatia;
| | - Damjan Blažeka
- Institute of Physics, Bijenička cesta 46, 10000 Zagreb, Croatia; (D.B.); (N.K.)
| | - Nikša Krstulović
- Institute of Physics, Bijenička cesta 46, 10000 Zagreb, Croatia; (D.B.); (N.K.)
| | - Ivica Aviani
- Department of Physics, Faculty of Science, University of Split, Ruđera Boškovića 33, 21000 Split, Croatia;
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468
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Xu H, Yu T, Fu Y, Dang Z, Wang L, Xie S, Chang F, Shen H, Ren Q. Biosynthesis of Ag nanoparticles and two-dimensional element distribution in Arabidopsis. IET Nanobiotechnol 2020; 14:325-330. [PMID: 32463023 DOI: 10.1049/iet-nbt.2019.0282] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Metallic nanoparticles can be synthesised in living plants, which provide a friendly approach. In this work, the authors aimed to study the synthesis of silver nanoparticles (AgNPs) in Arabidopsis and the two-dimensional (2D) distribution of Ag and other elements (Ca, P, S, Mg, and CI) in the Arabidopsis plant tissues. The concentrations of Ag in the plant tissues were determined by inductively coupled plasma-atomic emission spectrometer, showing that the majority of Ag was retained in the roots. Transmission electron micrographs showed the morphology of AgNPs and the location in plant cells. The distributions of Cl and Ag were consistent in plant tissues by 2D proton-induced X-ray emission. In conclusion, this is the first report of the AgNP synthesis in Arabidopsis living plants and its 2D distribution of important elements, which provide a new clue for further research.
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Affiliation(s)
- Huanhuan Xu
- Center of Analysis and Measurement, Fudan University, Shanghai, People's Republic of China
| | - Tao Yu
- Modern Physics Research Center, Fudan University, Shanghai, People's Republic of China
| | - Ying Fu
- State Key Laboratory of Genetic Engineering, Institute of Plant Biology, School of Life Sciences, Fudan University, Shanghai, People's Republic of China
| | - Zhiyan Dang
- Center of Analysis and Measurement, Fudan University, Shanghai, People's Republic of China
| | - Li Wang
- Center of Analysis and Measurement, Fudan University, Shanghai, People's Republic of China
| | - Songhai Xie
- Department of Chemistry, Fudan University, Shanghai, People's Republic of China
| | - Fang Chang
- State Key Laboratory of Genetic Engineering, Institute of Plant Biology, School of Life Sciences, Fudan University, Shanghai, People's Republic of China
| | - Hao Shen
- Modern Physics Research Center, Fudan University, Shanghai, People's Republic of China
| | - Qingguang Ren
- Center of Analysis and Measurement, Fudan University, Shanghai, People's Republic of China.
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469
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Quan JH, Gao FF, Ismail HAHA, Yuk JM, Cha GH, Chu JQ, Lee YH. Silver Nanoparticle-Induced Apoptosis in ARPE-19 Cells Is Inhibited by Toxoplasma gondii Pre-Infection Through Suppression of NOX4-Dependent ROS Generation. Int J Nanomedicine 2020; 15:3695-3716. [PMID: 32547023 PMCID: PMC7266428 DOI: 10.2147/ijn.s244785] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Purpose External and internal stimuli easily affect the retina. Studies have shown that cells infected with Toxoplasma gondii are resistant to multiple inducers of apoptosis. Nanoparticles (NPs) have been widely used in biomedical fields; however, little is known about cytotoxicity caused by NPs in the retina and the modulators that inhibit nanotoxicity. Materials and Methods ARPE-19 cells from human retinal pigment epithelium were treated with silver nanoparticles (AgNPs) alone or in combination with T. gondii. Then, the cellular toxicity, apoptosis, cell cycle analysis, autophagy, ROS generation, NOX4 expression, and MAPK/mTOR signaling pathways were investigated. To confirm the AgNP-induced cytotoxicity in ARPE-19 cells and its modulatory effects caused by T. gondii infection, the major experiments carried out in ARPE-19 cells were performed again using human foreskin fibroblast (HFF) cells and bone marrow-derived macrophages (BMDMs) from NOX4−/− mice. Results AgNPs dose-dependently induced cytotoxicity and cell death in ARPE-19 cells. Apoptosis, sub-G1 phase cell accumulation, autophagy, JNK phosphorylation, and mitochondrial apoptotic features, such as caspase-3 and PARP cleavages, mitochondrial membrane potential depolarization, and cytochrome c release into the cytosol were observed in AgNP-treated cells. AgNP treatment also increased the Bax, Bik, and Bim protein levels as well as NOX4-dependent ROS generation. However, T. gondii-infected ARPE-19 cells inhibited AgNP-induced apoptosis, JNK phosphorylation, sub-G1 phase cell accumulation, autophagy, NOX4-mediated ROS production, and mitochondrial apoptosis. Furthermore, mitochondrial apoptosis was found in AgNP-treated HFF cells and BMDMs, and AgNP-induced mitochondrial apoptosis inhibition via NOX4-dependent ROS suppression in T. gondii pre-infected HFF cells and BMDMs was also confirmed. Conclusion AgNPs induced mitochondrial apoptosis in human RPE cells combined with cell cycle dysregulation and autophagy; however, these effects were significantly inhibited by T. gondii pre-infection by suppression of NOX4-mediated ROS production, suggesting that T. gondii is a strong inhibitory modulator of nanotoxicity in in vitro models.
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Affiliation(s)
- Juan-Hua Quan
- Department of Gastroenterology, The Affiliated Hospital of Guangdong Medical University, Zhanjiang 524-001, People's Republic of China
| | - Fei Fei Gao
- Department of Infection Biology and Department of Medical Science, Chungnam National University College of Medicine, Daejeon 301-131, Korea
| | | | - Jae-Min Yuk
- Department of Infection Biology and Department of Medical Science, Chungnam National University College of Medicine, Daejeon 301-131, Korea
| | - Guang-Ho Cha
- Department of Infection Biology and Department of Medical Science, Chungnam National University College of Medicine, Daejeon 301-131, Korea
| | - Jia-Qi Chu
- Stem Cell Research and Cellular Therapy Center, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong Province 524-001, People's Republic of China
| | - Young-Ha Lee
- Department of Infection Biology and Department of Medical Science, Chungnam National University College of Medicine, Daejeon 301-131, Korea
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Synthesis and Characterization of Pyrogallol Capped Silver Nanoparticles and Evaluation of Their In Vitro Anti-Bacterial, Anti-cancer Profile Against AGS Cells. J CLUST SCI 2020. [DOI: 10.1007/s10876-020-01813-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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471
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Antibacterial Screening of Gunnera perpensa-Mediated Silver Nanoparticles. JOURNAL OF NANOTECHNOLOGY 2020. [DOI: 10.1155/2020/4508543] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
The biosynthesis of nanoparticles has become quite popular and has been proposed as an alternative over the tedious, expensive, and toxic physical and chemical methods of synthesis due to its cost-effectiveness and ecofriendliness. This study involved the biosynthesis, characterization, and evaluation of the antibacterial activity of Gunnera perpensa-mediated AgNPs. Biosynthesized AgNPs were characterized using TEM, UV, and FTIR spectroscopy. The antimicrobial activity was evaluated in six bacterial strains, using the disc diffusion assay, and MIC was determined using the broth dilution assay. All NPs generally presented as spherical clusters, with sizes ranging from 13 to 24 nm, as determined by TEM. The absorption peaks ranging between 421 and 425 nm and the presence of the C=O bond with amine groups, as indicated by UV and FTIR spectra, confirmed the synthesis and stabilization of G. perpensa extract-mediated AgNPs. Good antimicrobial activity ranging from 7.0 to 9.0 mm was exhibited by both preparations of G. perpensa extract-mediated AgNPs against both Gram-positive and Gram-negative studied bacteria, at MIC ranging from 3.2 to 12.5 μg/ml. Overall, good antibacterial activity was achieved at lower doses with both preparations of the G. perpensa-mediated AgNPs against all tested bacterial strains, suggesting G. perpensa-mediated AgNPs as good antimicrobial agents.
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472
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Simple Controlling Ecofriendly Synthesis of Silver Nanoparticles at Room Temperature Using Lemon Juice Extract and Commercial Rice Vinegar. JOURNAL OF NANOTECHNOLOGY 2020. [DOI: 10.1155/2020/3539701] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Silver nanoparticles were prepared in an ecofriendly manner at room temperature via the stepwise-modified Tollens route using the lemon juice extract and commercial rice vinegar. In this work, the lemon juice extract—a natural-origin chemical—was used as a reducing and stabilizing agent, and commercial rice vinegar was used to create a low acidic environment to control the silver nanoparticle growth via the stepwise method. The average dimension of silver nanoparticles was qualitatively evaluated through the UV-Vis spectra via the Mie theory. The X-ray diffraction and field emission scanning electron spectroscopy were employed to study the purity, the crystal structure, and the morphology of samples, respectively. Due to the weak activity and low purity of ecofriendly chemicals, the reaction and baking times strongly affect the preparation efficiency in obtaining small-size silver nanoparticles (∼40 nm). The highest efficiency was obtained with 24 h reaction time and 48 h baking time. The bimodal distribution of the size of silver nanoparticles was observed by UV-Vis analysis and field emission scanning electron microscopy. The obtained small-size silver nanoparticles (∼40 nm) have a uniform dimension. The quality of the obtained silver nanoparticles was evaluated through the conducting properties of silver paint made from ecosynthesized silver nanoparticles which showed a promising prospect to develop green-synthesized silver paint working at room temperature.
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473
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Wu Y, Jin Y, Sun T, Zhu P, Li J, Zhang Q, Wang X, Jiang J, Chen G, Zhao X. p62/SQSTM1 accumulation due to degradation inhibition and transcriptional activation plays a critical role in silica nanoparticle-induced airway inflammation via NF-κB activation. J Nanobiotechnology 2020; 18:77. [PMID: 32429946 PMCID: PMC7236097 DOI: 10.1186/s12951-020-00634-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Accepted: 05/12/2020] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Most nanoparticles (NPs) reportedly block autophagic flux, thereby upregulating p62/SQSTM1 through degradation inhibition. p62 also acts as a multifunctional scaffold protein with multiple domains, and is involved in various cellular processes. However, the autophagy substrate-independent role of p62 and its regulation at the transcriptional level upon NPs exposure remain unclear. RESULTS In this work, we exposed BEAS-2b cells and mice to silica nanoparticles (SiNPs), and found that SiNPs increased p62 protein levels in vivo and vitro. Then, we further explored the role and mechanism of SiNPs-stimulated p62 in vitro, and found that p62 degradation was inhibited due to autophagic flux blockade. Mechanistically, SiNPs blocked autophagic flux through impairment of lysosomal capacity rather than defective autophagosome fusion with lysosomes. Moreover, SiNPs stimulated translocation of NF-E2-related factor 2 (Nrf2) to the nucleus from the cytoplasm, which upregulated p62 transcriptional activation through direct binding of Nrf2 to the p62 promoter. Nrf2 siRNA dramatically reduced both the mRNA and protein levels of p62. These two mechanisms led to p62 protein accumulation, thus increasing interleukin (IL)-1 and IL-6 expression. SiNPs activated nuclear factor kappa B (NF-κB), and this effect could be alleviated by p62 knockdown. CONCLUSION SiNPs caused accumulation of p62 through both pre- and post-translational mechanisms, resulting in airway inflammation. These findings improve our understanding of SiNP-induced pulmonary damage and the molecular targets available to mitigate it.
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Affiliation(s)
- Yifan Wu
- Department of Occupational Medicine and Environmental Toxicology, School of Public Health, Nangtong University, Nantong, 226019, China
| | - Yang Jin
- Department of Occupational Medicine and Environmental Toxicology, School of Public Health, Nangtong University, Nantong, 226019, China
| | - Tianyu Sun
- Department of Occupational Medicine and Environmental Toxicology, School of Public Health, Nangtong University, Nantong, 226019, China
| | - Piaoyu Zhu
- Department of Occupational Medicine and Environmental Toxicology, School of Public Health, Nangtong University, Nantong, 226019, China
| | - Jinlong Li
- School of Pharmacy, Nantong University, Nantong, 226001, China
| | - Qinglin Zhang
- Departments of Gastroenterology, Affiliated to Wuxi People's Hospital, Nanjing Medical University, Wuxi, 214023, China
| | - Xiaoke Wang
- Department of Occupational Medicine and Environmental Toxicology, School of Public Health, Nangtong University, Nantong, 226019, China
| | - Junkang Jiang
- Department of Occupational Medicine and Environmental Toxicology, School of Public Health, Nangtong University, Nantong, 226019, China
| | - Gang Chen
- Department of Occupational Medicine and Environmental Toxicology, School of Public Health, Nangtong University, Nantong, 226019, China.
| | - Xinyuan Zhao
- Department of Occupational Medicine and Environmental Toxicology, School of Public Health, Nangtong University, Nantong, 226019, China.
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474
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Aboelfetoh EF, Gemeay AH, El-Sharkawy RG. Effective disposal of methylene blue using green immobilized silver nanoparticles on graphene oxide and reduced graphene oxide sheets through one-pot synthesis. ENVIRONMENTAL MONITORING AND ASSESSMENT 2020; 192:355. [PMID: 32394116 DOI: 10.1007/s10661-020-08278-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Accepted: 04/03/2020] [Indexed: 06/11/2023]
Abstract
This study reveals the feasibility of exploring highly efficient, cost-effective, and stable green adsorbents for the treatment of contaminated water. Here silver nanoparticles (AgNPs) were immobilized onto nanosheets of graphene oxide (GO) through in situ reduction process using green tea aqueous extract. GO reduction to reduced graphene oxide (rGO) and AgNPs decoration on rGO also occurred simultaneously. The impacts of the extract concentration, contact time, and temperature on the synthesis process have been investigated. The synthesized nanocomposites were examined by XRD, FTIR, Raman, SEM, TEM, and TGA. The GO nanosheets were decorated by AgNPs with a crystalline structure and an average particle size of 25 ± 3 nm. The temperature and the extract concentration were considerably affecting the type of the resulting nanocomposites. The GO/Ag nanocomposites were formed at room temperature (27 °C) using different extract concentration (2-18% (v/v)), while the rGO/Ag nanocomposite was formed only at a higher temperature (95 °C) with higher extract concentration (18%). The methylene blue (MB) dye was picked as a water pollutant to explore the adsorption ability of the nanocomposites. The adsorption behavior of the GO/Ag nanocomposites was examined under diverse factors (MB concentration, adsorbent dosage, pH, and contact time) to achieve optimization. The adsorption data concurs with Langmuir isotherm giving maximum adsorption up to 633 mg g-1. Adsorption kinetics demonstrate good pseudo-second-order compliance. Spontaneous and endothermic nature of adsorption was affirmed via thermodynamic parameters. The nanocomposites could be utilized as eco-friendly and reliable adsorbents in wastewater treatment, as a result of their exceptional productivity and reusing potential.
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Affiliation(s)
- Eman F Aboelfetoh
- Chemistry Department, Faculty of Science, Tanta University, Tanta, Egypt.
| | - Ali H Gemeay
- Chemistry Department, Faculty of Science, Tanta University, Tanta, Egypt
| | - Rehab G El-Sharkawy
- Chemistry Department, Faculty of Science, Tanta University, Tanta, Egypt
- Chemistry Department, College of Science, Jouf University, Aljouf 2014, Sakaka, Saudi Arabia
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475
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Green Synthesis of Silver Nanoparticles by Using Sansevieria Roxburghiana, Their Characterization and Antibacterial Activity. J Inorg Organomet Polym Mater 2020. [DOI: 10.1007/s10904-020-01567-w] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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476
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Yin IX, Zhao IS, Mei ML, Li Q, Yu OY, Chu CH. Use of Silver Nanomaterials for Caries Prevention: A Concise Review. Int J Nanomedicine 2020; 15:3181-3191. [PMID: 32440117 PMCID: PMC7212989 DOI: 10.2147/ijn.s253833] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Accepted: 04/22/2020] [Indexed: 11/23/2022] Open
Abstract
Objective The aim of this concise review is to summarize the use of silver nanomaterials for caries prevention. Methods Two researchers independently performed a literature search of publications in English using Embase, Medline, PubMed, and Scopus databases. The keywords used were (silver nanoparticles OR AgNPs OR nano silver OR nano-silver) AND (caries OR tooth decay OR remineralisation OR remineralization). They screened the title and abstract to identify potentially eligible publications. They then retrieved the full texts of the identified publications to select original research reporting silver nanomaterials for caries prevention. Results The search identified 376 publications, and 66 articles were included in this study. The silver nanomaterials studied were categorized as resin with silver nanoparticles (n=31), silver nanoparticles (n=21), glass ionomer cement with silver nanoparticles (n=7), and nano silver fluoride (n=7). Most (59/66, 89%) studies investigated the antibacterial properties, and they all found that silver nanomaterials inhibited the adhesion and growth of cariogenic bacteria, mainly Streptococcus mutans. Although silver nanomaterials were used as anti-caries agents, only 11 (11/66, 17%) studies reported the effects of nanomaterials on the mineral content of teeth. Eight of them are laboratory studies, and they found that silver nanomaterials prevented the demineralization of enamel and dentin under an acid or cariogenic biofilm challenge. The remaining three are clinical trials that reported that silver nanomaterials prevented and arrested caries in children. Conclusion Silver nanoparticles have been used alone or with resin, glass ionomer, or fluoride for caries prevention. Silver nanomaterials inhibit the adhesion and growth of cariogenic bacteria. They also impede the demineralization of enamel and dentin.
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Affiliation(s)
- Iris Xiaoxue Yin
- School of Dentistry, Shenzhen University Health Science Center, Shenzhen, People's Republic of China.,HKU Shenzhen Institute of Research and Innovation, Shenzhen, People's Republic of China.,Faculty of Dentistry, The University of Hong Kong, Hong Kong, People's Republic of China
| | - Irene Shuping Zhao
- School of Dentistry, Shenzhen University Health Science Center, Shenzhen, People's Republic of China
| | - May Lei Mei
- Faculty of Dentistry, University of Otago, Otago, New Zealand
| | - Quanli Li
- College of Stomatology, Anhui Medical University, Hefei, People's Republic of China
| | - Ollie Yiru Yu
- Faculty of Dentistry, The University of Hong Kong, Hong Kong, People's Republic of China
| | - Chun Hung Chu
- HKU Shenzhen Institute of Research and Innovation, Shenzhen, People's Republic of China.,Faculty of Dentistry, The University of Hong Kong, Hong Kong, People's Republic of China
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477
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Jadoon T, Mahmood T, Ayub K. Silver-graphene quantum dots based electrochemical sensor for trinitrotoluene and p-nitrophenol. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.112878] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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478
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Hashemi SF, Tasharrofi N, Saber MM. Green synthesis of silver nanoparticles using Teucrium polium leaf extract and assessment of their antitumor effects against MNK45 human gastric cancer cell line. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.127889] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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479
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Raj R K, D E, S R. β‐Sitosterol‐assisted silver nanoparticles activates Nrf2 and triggers mitochondrial apoptosis via oxidative stress in human hepatocellular cancer cell line. J Biomed Mater Res A 2020; 108:1899-1908. [DOI: 10.1002/jbm.a.36953] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Revised: 03/18/2020] [Accepted: 03/28/2020] [Indexed: 12/24/2022]
Affiliation(s)
- Kathiswar Raj R
- Department of Pharmacology, Saveetha Dental CollegeSaveetha Institute of Medical and Technical Sciences (SIMATS) Chennai Tamil Nadu India
| | - Ezhilarasan D
- Department of Pharmacology, Saveetha Dental CollegeSaveetha Institute of Medical and Technical Sciences (SIMATS) Chennai Tamil Nadu India
| | - Rajeshkumar S
- Department of Pharmacology, Saveetha Dental CollegeSaveetha Institute of Medical and Technical Sciences (SIMATS) Chennai Tamil Nadu India
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480
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David ME, Ion RM, Grigorescu RM, Iancu L, Andrei ER. Nanomaterials Used in Conservation and Restoration of Cultural Heritage: An Up-to-Date Overview. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E2064. [PMID: 32365734 PMCID: PMC7254209 DOI: 10.3390/ma13092064] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Revised: 04/16/2020] [Accepted: 04/27/2020] [Indexed: 02/07/2023]
Abstract
In the last few years, the preservation of cultural heritage has become an important issue globally, due to the fact that artifacts and monuments are continually threatened by degradation. It is thus very important to find adequate consolidators that are capable of saving and maintaining the natural aspect of these objects. This study aims to provide an updated survey of the main nanomaterials used for the conservation and restoration of cultural heritage. In the last few years, besides the classic nanomaterials used in this field, such as metal nanoparticles (copper and silver) and metal oxides (zinc and aluminum), hydroxyapatite and carbonated derivatives, tubular nanomaterials (such as carbon nanotubes) have been used as a potential consolidate material of cultural heritage. Tubular nanomaterials have attracted attention for use in different fields due to their structures, as well as their ability to present multiple walls. These nanotubes have the necessary properties in preserving cultural heritage, such as superior mechanical and elastic strength (even higher than steel), high hydrophobicity (with a contact angle up to 140°), optical properties (high photodegradation protection), large specific surface area (from 50 to 1315 m2/g, depending on the number of walls) for absorption of other nanomaterials and relatively good biocompatibility.
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Affiliation(s)
- Madalina Elena David
- “Evaluation and Conservation of Cultural Heritage” Research Group, National Institute for Research and Development in Chemistry and Petrochemistry–ICECHIM, 060021 Bucharest, Romania; (M.E.D.); (R.M.G.); (L.I.); (E.R.A.)
- Doctoral School of Materials Engineering Department, Valahia University, 130104 Targoviste, Romania
| | - Rodica-Mariana Ion
- “Evaluation and Conservation of Cultural Heritage” Research Group, National Institute for Research and Development in Chemistry and Petrochemistry–ICECHIM, 060021 Bucharest, Romania; (M.E.D.); (R.M.G.); (L.I.); (E.R.A.)
- Doctoral School of Materials Engineering Department, Valahia University, 130104 Targoviste, Romania
| | - Ramona Marina Grigorescu
- “Evaluation and Conservation of Cultural Heritage” Research Group, National Institute for Research and Development in Chemistry and Petrochemistry–ICECHIM, 060021 Bucharest, Romania; (M.E.D.); (R.M.G.); (L.I.); (E.R.A.)
| | - Lorena Iancu
- “Evaluation and Conservation of Cultural Heritage” Research Group, National Institute for Research and Development in Chemistry and Petrochemistry–ICECHIM, 060021 Bucharest, Romania; (M.E.D.); (R.M.G.); (L.I.); (E.R.A.)
- Doctoral School of Materials Engineering Department, Valahia University, 130104 Targoviste, Romania
| | - Elena Ramona Andrei
- “Evaluation and Conservation of Cultural Heritage” Research Group, National Institute for Research and Development in Chemistry and Petrochemistry–ICECHIM, 060021 Bucharest, Romania; (M.E.D.); (R.M.G.); (L.I.); (E.R.A.)
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481
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Miesen TJ, Engstrom AM, Frost DC, Ajjarapu R, Ajjarapu R, Lira CN, Mackiewicz MR. A hybrid lipid membrane coating "shape-locks" silver nanoparticles to prevent surface oxidation and silver ion dissolution. RSC Adv 2020; 10:15677-15693. [PMID: 35493639 PMCID: PMC9052474 DOI: 10.1039/d0ra01727b] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2020] [Accepted: 04/14/2020] [Indexed: 11/21/2022] Open
Abstract
The controlled synthesis of stable silver nanoparticles (AgNPs), that do not undergo surface oxidation and Ag+ ion dissolution, continues to be a major challenge. Here the synthesis of robust hybrid lipid-coated AgNPs, comprised of l-α-phosphatidylcholine (PC) membranes anchored by a stoichiometric amount of long-chained hydrophobic thiols and sodium oleate (SOA) as hydrophobic binding partners, that do not undergo surface oxidation and Ag+ ion dissolution, is described. UV-Visible (UV-Vis) spectroscopy, transmission electron microscopy (TEM), and inductively coupled plasma mass spectrometry (ICP-MS) demonstrate that in the presence of strong oxidants, such as potassium cyanide (KCN), the hybrid lipid-coated AgNPs are stable and do not undergo surface oxidation even in the presence of membrane destabilizing surfactants. UV-Vis studies show that the stability of hybrid lipid-coated AgNPs of various sizes and shapes is dependent on the length of the thiol hydrocarbon chain and can be ranked in the order of increasing stability as follows: propanethiol (PT) < hexanethiol (HT) ≤ decanethiol (DT). UV-Vis and ICP-MS studies show that the hybrid lipid-coated AgNPs do not change in size or shape confirming that the AgNPs do not undergo surface oxidation and Ag+ ion dissolution when placed in the presence of strong oxidants, chlorides, thiols, and low pH. Long-term stability studies, over 21 days, show that the hybrid lipid-coated AgNPs do not release Ag+ ions and are more stable. Overall, these studies demonstrate hybrid membrane encapsulation of nanomaterials is a viable method for stabilizing AgNPs in a "shape-locked" form that is unable to undergo surface oxidation, Ag+ ion release, aging, or shape conversion. More importantly, this design strategy is a simple approach to the synthesis and stabilization of AgNPs for a variety of biomedical and commercial applications where Ag+ ion release and toxicity is a concern. With robust and shielded AgNPs, investigators can now evaluate and correlate how the physical features of AgNPs influence toxicity without the confounding factor of Ag+ ions present in samples. This design strategy also provides an opportunity where the membrane composition can be tuned to control the release rate of Ag+ ions for optimizing antimicrobial activity.
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Affiliation(s)
- Thomas J Miesen
- Department of Chemistry, Portland State University Portland OR 97207 USA
| | - Arek M Engstrom
- Department of Chemistry, Portland State University Portland OR 97207 USA
| | - Dane C Frost
- Department of Chemistry, Portland State University Portland OR 97207 USA
| | - Ramya Ajjarapu
- Department of Chemistry, Portland State University Portland OR 97207 USA
| | - Rohan Ajjarapu
- Department of Chemistry, Portland State University Portland OR 97207 USA
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482
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Biological Factors, Metals, and Biomaterials Regulating Osteogenesis through Autophagy. Int J Mol Sci 2020; 21:ijms21082789. [PMID: 32316424 PMCID: PMC7215394 DOI: 10.3390/ijms21082789] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 04/10/2020] [Accepted: 04/13/2020] [Indexed: 01/18/2023] Open
Abstract
Bone loss raises great concern in numerous situations, such as ageing and many diseases and in both orthopedic and dentistry fields of application, with an extensive impact on health care. Therefore, it is crucial to understand the mechanisms and the determinants that can regulate osteogenesis and ensure bone balance. Autophagy is a well conserved lysosomal degradation pathway, which is known to be highly active during differentiation and development. This review provides a revision of the literature on all the exogen factors that can modulate osteogenesis through autophagy regulation. Metal ion exposition, mechanical stimuli, and biological factors, including hormones, nutrients, and metabolic conditions, were taken into consideration for their ability to tune osteogenic differentiation through autophagy. In addition, an exhaustive overview of biomaterials, both for orthopedic and dentistry applications, enhancing osteogenesis by modulation of the autophagic process is provided as well. Already investigated conditions regulating bone regeneration via autophagy need to be better understood for finely tailoring innovative therapeutic treatments and designing novel biomaterials.
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483
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Selvaraj S, Karuppaiah A, Karthik S, Sankar V. Synthesis and toxicity assessment of copper-based nano composite cream: an approach to enhance the antibacterial effect of mafenide acetate. INORG NANO-MET CHEM 2020. [DOI: 10.1080/24701556.2020.1750428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Senith Selvaraj
- Department of Pharmaceutics, PSG College of Pharmacy, Coimbatore, Tamil Nadu, India
| | - Arjunan Karuppaiah
- Department of Pharmaceutics, PSG College of Pharmacy, Coimbatore, Tamil Nadu, India
| | - Siram Karthik
- Department of Pharmaceutics, PSG College of Pharmacy, Coimbatore, Tamil Nadu, India
| | - Veintramuthu Sankar
- Department of Pharmaceutics, PSG College of Pharmacy, Coimbatore, Tamil Nadu, India
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484
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Edis Z, Haj Bloukh S, Ibrahim MR, Abu Sara H. "Smart" Antimicrobial Nanocomplexes with Potential to Decrease Surgical Site Infections (SSI). Pharmaceutics 2020; 12:E361. [PMID: 32326601 PMCID: PMC7238257 DOI: 10.3390/pharmaceutics12040361] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 04/09/2020] [Accepted: 04/13/2020] [Indexed: 02/06/2023] Open
Abstract
The emergence of resistant pathogens is a burden on mankind and threatens the existence of our species. Natural and plant-derived antimicrobial agents need to be developed in the race against antibiotic resistance. Nanotechnology is a promising approach with a variety of products. Biosynthesized silver nanoparticles (AgNP) have good antimicrobial activity. We prepared AgNPs with trans-cinnamic acid (TCA) and povidone-iodine (PI) with increased antimicrobial activity. We synthesized also AgNPs with natural cinnamon bark extract (Cinn) in combination with PI and coated biodegradable Polyglycolic Acid (PGA) sutures with the new materials separately. These compounds (TCA-AgNP, TCA-AgNP-PI, Cinn-AgNP, and Cinn-AgNP-PI) and their dip-coated PGA sutures were tested against 10 reference strains of microorganisms and five antibiotics by zone inhibition with disc- and agar-well-diffusion methods. The new compounds TCA-AgNP-PI and Cinn-AgNP-PI are broad spectrum microbicidal agents and therefore potential coating materials for sutures to prevent Surgical Site Infections (SSI). TCA-AgNP-PI inhibits the studied pathogens stronger than Cinn-AgNP-PI in-vitro and on coated sutures. Dynamic light scattering (DLS), ultraviolet-visible spectroscopy (UV-Vis), Fourier Transform infrared spectroscopy (FT-IR), Raman, x-ray diffraction (XRD), microstructural analysis by scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) confirmed the composition of TCA-AgNP-PI and Cinn-AgNP-PI. Smart solutions involving hybrid materials based on synergistic antimicrobial action have promising future perspectives to combat resistant microorganisms.
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Affiliation(s)
- Zehra Edis
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, Ajman University, Ajman PO Box 346, UAE;
| | - Samir Haj Bloukh
- Department of Clinical Sciences, College of Pharmacy and Health Sciences, Ajman University, Ajman PO Box 346, UAE; (S.H.B.); (H.A.S.)
| | - May Reda Ibrahim
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, Ajman University, Ajman PO Box 346, UAE;
| | - Hamed Abu Sara
- Department of Clinical Sciences, College of Pharmacy and Health Sciences, Ajman University, Ajman PO Box 346, UAE; (S.H.B.); (H.A.S.)
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485
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Soil Application of Nano Silica on Maize Yield and Its Insecticidal Activity Against Some Stored Insects After the Post-Harvest. NANOMATERIALS 2020. [DOI: 10.3390/nano10040739 10.1007/978-1-61779-539-8_33] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Maize is considered one of the most imperative cereal crops worldwide. In this work, high throughput silica nanoparticles (SiO2-NPs) were prepared via the sol–gel technique. SiO2-NPs were attained in a powder form followed by full analysis using the advanced tools (UV-vis, HR-TEM, SEM, XRD and zeta potential). To this end, SiO2-NPs were applied as both nanofertilizer and pesticide against four common pests that infect the stored maize and cause severe damage to crops. As for nanofertilizers, the response of maize hybrid to mineral NPK, “Nitrogen (N), Phosphorus (P), and Potassium (K)” (0% = untreated, 50% of recommended dose and 100%), with different combinations of SiO2-NPs; (0, 2.5, 5, 10 g/kg soil) was evaluated. Afterward, post-harvest, grains were stored and fumigated with different concentrations of SiO2-NPs (0.0031, 0.0063. 0.25, 0.5, 1.0, 2.0, 2.5, 5, 10 g/kg) in order to identify LC50 and mortality % of four common insects, namely Sitophilus oryzae, Rhizopertha dominica, Tribolium castaneum, and Orizaephilus surinamenisis. The results revealed that, using the recommended dose of 100%, mineral NPK showed the greatest mean values of plant height, chlorophyll content, yield, its components, and protein (%). By feeding the soil with SiO2-NPs up to 10 g/kg, the best growth and yield enhancement of maize crop is noticed. Mineral NPK interacted with SiO2-NPs, whereas the application of mineral NPK at the rate of 50% with 10 g/kg SiO2-NPs, increased the highest mean values of agronomic characters. Therefore, SiO2-NPs can be applied as a growth promoter, and in the meantime, as strong unconventional pesticides for crops during storage, with a very small and safe dose.
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486
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El-Naggar ME, Abdelsalam NR, Fouda MM, Mackled MI, Al-Jaddadi MA, Ali HM, Siddiqui MH, Kandil EE. Soil Application of Nano Silica on Maize Yield and Its Insecticidal Activity Against Some Stored Insects After the Post-Harvest. NANOMATERIALS 2020; 10:nano10040739. [PMID: 32290620 PMCID: PMC7221732 DOI: 10.3390/nano10040739] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Revised: 04/06/2020] [Accepted: 04/06/2020] [Indexed: 01/02/2023]
Abstract
Maize is considered one of the most imperative cereal crops worldwide. In this work, high throughput silica nanoparticles (SiO2-NPs) were prepared via the sol-gel technique. SiO2-NPs were attained in a powder form followed by full analysis using the advanced tools (UV-vis, HR-TEM, SEM, XRD and zeta potential). To this end, SiO2-NPs were applied as both nanofertilizer and pesticide against four common pests that infect the stored maize and cause severe damage to crops. As for nanofertilizers, the response of maize hybrid to mineral NPK, "Nitrogen (N), Phosphorus (P), and Potassium (K)" (0% = untreated, 50% of recommended dose and 100%), with different combinations of SiO2-NPs; (0, 2.5, 5, 10 g/kg soil) was evaluated. Afterward, post-harvest, grains were stored and fumigated with different concentrations of SiO2-NPs (0.0031, 0.0063. 0.25, 0.5, 1.0, 2.0, 2.5, 5, 10 g/kg) in order to identify LC50 and mortality % of four common insects, namely Sitophilus oryzae, Rhizopertha dominica, Tribolium castaneum, and Orizaephilus surinamenisis. The results revealed that, using the recommended dose of 100%, mineral NPK showed the greatest mean values of plant height, chlorophyll content, yield, its components, and protein (%). By feeding the soil with SiO2-NPs up to 10 g/kg, the best growth and yield enhancement of maize crop is noticed. Mineral NPK interacted with SiO2-NPs, whereas the application of mineral NPK at the rate of 50% with 10 g/kg SiO2-NPs, increased the highest mean values of agronomic characters. Therefore, SiO2-NPs can be applied as a growth promoter, and in the meantime, as strong unconventional pesticides for crops during storage, with a very small and safe dose.
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Affiliation(s)
- Mehrez E. El-Naggar
- Pre-Treatment and Finishing of Cellulosic based Fibers Department, Textile Industries Research Division, National Research Center, 33 El- Behooth St, Dokki, Giza 12311, Egypt
- Correspondence: (M.E.E.-N.); (N.R.A.); (M.M.G.F.); Tel.: +20-11-2601-8116 (M.E.E.-N); +20-10-6632-9045 (N.R.A); +20-10-9266-1554 (M.M.G.F.)
| | - Nader R. Abdelsalam
- Agricultural Botany Department, Faculty of Agriculture, Saba Basha, Alexandria University, Alexandria P.O. Box 21531, Egypt
- Correspondence: (M.E.E.-N.); (N.R.A.); (M.M.G.F.); Tel.: +20-11-2601-8116 (M.E.E.-N); +20-10-6632-9045 (N.R.A); +20-10-9266-1554 (M.M.G.F.)
| | - Moustafa M.G. Fouda
- Pre-Treatment and Finishing of Cellulosic based Fibers Department, Textile Industries Research Division, National Research Center, 33 El- Behooth St, Dokki, Giza 12311, Egypt
- Correspondence: (M.E.E.-N.); (N.R.A.); (M.M.G.F.); Tel.: +20-11-2601-8116 (M.E.E.-N); +20-10-6632-9045 (N.R.A); +20-10-9266-1554 (M.M.G.F.)
| | - Marwa I. Mackled
- Department of Stored Product Pests, Plant Protection Institute, Agriculture Research Center (ARC), Sabahia, Alexandria P.O. Box 21616, Egypt;
| | - Malik A.M. Al-Jaddadi
- Ministry of Commerce, Trade and Financial Control Department, Trade Control Department, Division Quality Control, Baghdad 13201, Iraq;
| | - Hayssam M. Ali
- Botany and Microbiology Department, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia; (H.M.A.); (M.H.S.)
- Timber Trees Research Department, Sabahia Horticulture Research Station, Horticulture Research Institute, Agriculture Research Center, Alexandria 21526, Egypt
| | - Manzer H. Siddiqui
- Botany and Microbiology Department, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia; (H.M.A.); (M.H.S.)
| | - Essam E. Kandil
- Plant Production Department, Faculty of Agriculture (Saba Basha), Alexandria University, Alexandria P.O. Box 21531, Egypt;
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487
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Facile Synthesis of Silver Nanoparticles Using Asian Spider Flower and Its In Vitro Cytotoxic Activity Against Human Breast Carcinoma Cells. Processes (Basel) 2020. [DOI: 10.3390/pr8040430] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Cancer is one of the most dangerous threats to human health and possibly the utmost task for current medicine. Currently, bio-based synthesis of nanoparticles from plants has gained much interest due to its potential medicinal applications. In the present study, a biological approach was employed for biogenic (green) synthesis of silver nanoparticles (AgNPs) using dried leaf extract of Asian spider flower (Asf). The biogenic synthesis of Asf-AgNPs (Asian spider flower-Silver nanoparticles) was established using ultra violet-visible (UV-vis) spectra which exhibited a wide superficial plasmon resonance of AgNPs at 445 nm. These nanoparticles clearly showed the formation of poly-disperse crystalline solids (spherical shape) with particle size range of <50 nm based on observation under a transmission electron microscope (TEM). Infrared spectroscopy (FTIR) revealed carboxylic acids (C = O stretch) known to act as a capping agent and a reductant in plant extracts. Elemental silver signal peak was observed in the graph obtained from energy-dispersive X-ray (EDX) analysis. Biocompatibility tests for Asf-AgNPs at different doses were evaluated against human breast cancer cells (MCF7) for cell viability and apoptotic analysis. According to the evaluation, biosynthesized Asf-AgNPs could prevent the explosion of human breast tumor cells (MCF7) in IC50 at a dose of 40 μg/mL after 48 h of treatment. The results obtained in the IC50 dosage treatments were statistically significant (p < 0.05) when compared with control. Nuclear damage of cells was further investigated using annexin V-FITC/PI dual staining and DAPI (4′,6-diamidino-2-phenylindole) staining method. Bright blue fluorescence with condensed and fragmented chromatin was observed. Western blot analysis showed increased expression levels of caspases-3 and 9 (apoptotic proteins). These results indicate that bio-approached AgNPs synthesized through Asf plant extract could be used as potential therapeutic medications for human cancer cells.
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488
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Scollo F, Seggio M, Torrisi RL, Bua RO, Zimbone M, Contino A, Maccarrone G. New fluorescent-labelled nanoparticles: synthesis, characterization and interactions with cysteine and homocysteine to evaluate their stability in aqueous solution. APPLIED NANOSCIENCE 2020. [DOI: 10.1007/s13204-019-01241-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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489
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Ratan ZA, Haidere MF, Nurunnabi M, Shahriar SM, Ahammad AS, Shim YY, Reaney MJ, Cho JY. Green Chemistry Synthesis of Silver Nanoparticles and Their Potential Anticancer Effects. Cancers (Basel) 2020; 12:E855. [PMID: 32244822 PMCID: PMC7226404 DOI: 10.3390/cancers12040855] [Citation(s) in RCA: 109] [Impact Index Per Article: 27.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Revised: 03/23/2020] [Accepted: 03/30/2020] [Indexed: 12/25/2022] Open
Abstract
Nanobiotechnology has grown rapidly and become an integral part of modern disease diagnosis and treatment. Biosynthesized silver nanoparticles (AgNPs) are a class of eco-friendly, cost-effective and biocompatible agents that have attracted attention for their possible biomedical and bioengineering applications. Like many other inorganic and organic nanoparticles, such as AuNPs, iron oxide and quantum dots, AgNPs have also been widely studied as components of advanced anticancer agents in order to better manage cancer in the clinic. AgNPs are typically produced by the action of reducing reagents on silver ions. In addition to numerous laboratory-based methods for reduction of silver ions, living organisms and natural products can be effective and superior source for synthesis of AgNPs precursors. Currently, plants, bacteria and fungi can afford biogenic AgNPs precursors with diverse geometries and surface properties. In this review, we summarized the recent progress and achievements in biogenic AgNPs synthesis and their potential uses as anticancer agents.
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Affiliation(s)
- Zubair Ahmed Ratan
- Department of Integrative Biotechnology, Biomedical Institute for Convergence at SKKU (BICS), Sungkyunkwan University, Suwon 16419, Korea; (Z.A.R.); (Y.Y.S.)
- Department of Biomedical Engineering, Khulna University of Engineering and Technology, Khulna 9203, Bangladesh
| | - Mohammad Faisal Haidere
- Department of Public Health and Informatics, Bangabandhu Sheikh Mujib Medical University, Dhaka 1000, Bangladesh;
| | - Md. Nurunnabi
- Department of Pharmaceutical Sciences, School of Pharmacy, University of Texas at El Paso, El Paso, TX 79902, USA;
| | - Sadi Md. Shahriar
- Department of Materials Science and Engineering, Khulna University of Engineering and Technology, Khulna 9203, Bangladesh;
| | | | - Youn Young Shim
- Department of Integrative Biotechnology, Biomedical Institute for Convergence at SKKU (BICS), Sungkyunkwan University, Suwon 16419, Korea; (Z.A.R.); (Y.Y.S.)
- Department of Plant Sciences, University of Saskatchewan, Saskatoon, SK S7N 5A8, Canada
- Guangdong Saskatchewan Oilseed Joint Laboratory, Department of Food Science and Engineering, Jinan University, Guangzhou 510632, China
| | - Martin J.T. Reaney
- Department of Plant Sciences, University of Saskatchewan, Saskatoon, SK S7N 5A8, Canada
- Guangdong Saskatchewan Oilseed Joint Laboratory, Department of Food Science and Engineering, Jinan University, Guangzhou 510632, China
| | - Jae Youl Cho
- Department of Integrative Biotechnology, Biomedical Institute for Convergence at SKKU (BICS), Sungkyunkwan University, Suwon 16419, Korea; (Z.A.R.); (Y.Y.S.)
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490
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Umoren SA, Solomon MM, Nzila A, Obot IB. Preparation of Silver/Chitosan Nanofluids Using Selected Plant Extracts: Characterization and Antimicrobial Studies Against Gram-Positive and Gram-Negative Bacteria. MATERIALS 2020; 13:ma13071629. [PMID: 32244799 PMCID: PMC7178312 DOI: 10.3390/ma13071629] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Revised: 03/16/2020] [Accepted: 03/17/2020] [Indexed: 11/16/2022]
Abstract
Chitosan/silver nanofluids were prepared using Phoenix dactylifera (DPLE) or Rumex vesicarius (HEL) extracts as the reducing agent, characterized using Fourier-transform infrared spectroscopy (FTIR), ultraviolet-visible (UV-vis), X-ray diffraction (XRD), and transmission electron microscope (TEM). The antimicrobial effect of the nanofluids against Gram positive, Bacillus licheniformis, Staphylococcus haemolyticus, Bacillus cereus, and Micrococcus luteus, and Gram-negative Pseudomonas aeruginosa, Pseudomonas citronellolis, and Escherichia coli bacteria has been studied. The nanoparticles were polydispersed in the chitosan matrix and are highly stable. The zeta potential of the silver nanoparticles in DPLE- and HEL-mediated composites is +46 mV and +56 mV, respectively. The FTIR results reveal that the free carboxylate groups in the plant biomaterial took part in stabilization process. HEL is a stronger reducing agent than DPLE and nanoparticles generated with HEL are smaller (8.0-36 nm) than those produced with DPLE (10-43 nm). DPLE- and HEL-mediated composites effectively inhibit the growth of the studied bacteria but HEL-mediated composite exhibited higher effect. The higher antimicrobial activity of HEL-mediated composite is linked to the smaller nanoparticles. The foregoing results indicate that HEL extract can be used in the green production of potential antimicrobial chitosan/silver nanofluids for biomedical and packaging applications.
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Affiliation(s)
- Saviour A. Umoren
- Center of Research Excellence in Corrosion, Research Institute, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia; (M.M.S.); (I.B.O.)
- Correspondence:
| | - Moses M. Solomon
- Center of Research Excellence in Corrosion, Research Institute, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia; (M.M.S.); (I.B.O.)
| | - Alexis Nzila
- Department of Life Sciences, College of Science, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia;
| | - Ime B. Obot
- Center of Research Excellence in Corrosion, Research Institute, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia; (M.M.S.); (I.B.O.)
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491
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Ferdous Z, Nemmar A. Health Impact of Silver Nanoparticles: A Review of the Biodistribution and Toxicity Following Various Routes of Exposure. Int J Mol Sci 2020; 21:E2375. [PMID: 32235542 PMCID: PMC7177798 DOI: 10.3390/ijms21072375] [Citation(s) in RCA: 349] [Impact Index Per Article: 87.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Revised: 12/14/2019] [Accepted: 12/18/2019] [Indexed: 12/11/2022] Open
Abstract
Engineered nanomaterials (ENMs) have gained huge importance in technological advancements over the past few years. Among the various ENMs, silver nanoparticles (AgNPs) have become one of the most explored nanotechnology-derived nanostructures and have been intensively investigated for their unique physicochemical properties. The widespread commercial and biomedical application of nanosilver include its use as a catalyst and an optical receptor in cosmetics, electronics and textile engineering, as a bactericidal agent, and in wound dressings, surgical instruments, and disinfectants. This, in turn, has increased the potential for interactions of AgNPs with terrestrial and aquatic environments, as well as potential exposure and toxicity to human health. In the present review, after giving an overview of ENMs, we discuss the current advances on the physiochemical properties of AgNPs with specific emphasis on biodistribution and both in vitro and in vivo toxicity following various routes of exposure. Most in vitro studies have demonstrated the size-, dose- and coating-dependent cellular uptake of AgNPs. Following NPs exposure, in vivo biodistribution studies have reported Ag accumulation and toxicity to local as well as distant organs. Though there has been an increase in the number of studies in this area, more investigations are required to understand the mechanisms of toxicity following various modes of exposure to AgNPs.
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Affiliation(s)
- Zannatul Ferdous
- Department of Physiology, College of Medicine and Health Sciences, United Arab Emirates University, P.O. Box 17666 Al Ain, UAE
| | - Abderrahim Nemmar
- Department of Physiology, College of Medicine and Health Sciences, United Arab Emirates University, P.O. Box 17666 Al Ain, UAE
- Zayed Center for Health Sciences, United Arab Emirates University, P.O. Box 17666 Al Ain, UAE
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492
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Tanaka M, Saito S, Kita R, Jang J, Choi Y, Choi J, Okochi M. Array-Based Screening of Silver Nanoparticle Mineralization Peptides. Int J Mol Sci 2020; 21:E2377. [PMID: 32235567 PMCID: PMC7178033 DOI: 10.3390/ijms21072377] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 03/26/2020] [Accepted: 03/26/2020] [Indexed: 12/24/2022] Open
Abstract
The use of biomolecules in nanomaterial synthesis has received increasing attention, because they can function as a medium to produce inorganic materials in ambient conditions. Short peptides are putative ligands that interact with metallic surfaces, as they have the potential to control the synthesis of nanoscale materials. Silver nanoparticle (AgNP) mineralization using peptides has been investigated; however, further comprehensive analysis must be carried out, because the design of peptide mediated-AgNP properties is still highly challenging. Herein, we employed an array comprising 200 spot synthesis-based peptides, which were previously isolated as gold nanoparticle (AuNP)-binding and/or mineralization peptides, and the AgNP mineralization activity of each peptide was broadly evaluated. Among 10 peptides showing the highest AgNP-synthesis activity (TOP10), nine showed the presence of EE and E[X]E (E: glutamic acid, and X: any amino acid), whereas none of these motifs were found in the WORST25 (25 peptides showing the lowest AgNP synthesis activity) peptides. The size and morphology of the particles synthesized by TOP3 peptides were dependent on their sequences. These results suggested not only that array-based techniques are effective for the peptide screening of AgNP mineralization, but also that AgNP mineralization regulated by peptides has the potential for the synthesis of AgNPs, with controlled morphology in environmentally friendly conditions.
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Affiliation(s)
- Masayoshi Tanaka
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, 2-12-1, O-okayama, Meguro-ku, Tokyo 152-8552, Japan; (M.T.); (S.S.)
| | - Shogo Saito
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, 2-12-1, O-okayama, Meguro-ku, Tokyo 152-8552, Japan; (M.T.); (S.S.)
| | - Reo Kita
- School of Science; Tokyo Institute of Technology, 2-12-1, O-okayama, Meguro-ku, Tokyo 152-8552, Japan;
| | - Jaehee Jang
- School of Integrative Engineering, Chung-Ang University, Seoul 06974, Korea; (J.J.); (Y.C.); (J.C.)
| | - Yonghyun Choi
- School of Integrative Engineering, Chung-Ang University, Seoul 06974, Korea; (J.J.); (Y.C.); (J.C.)
| | - Jonghoon Choi
- School of Integrative Engineering, Chung-Ang University, Seoul 06974, Korea; (J.J.); (Y.C.); (J.C.)
| | - Mina Okochi
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, 2-12-1, O-okayama, Meguro-ku, Tokyo 152-8552, Japan; (M.T.); (S.S.)
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493
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Mofa N, Zhapekova A, Sadykov B, Bakkara A, Tulepov M, Elouadi B. Preparation of Silvered Colloidal Compositions for Nanocosmetic Drugs. EURASIAN CHEMICO-TECHNOLOGICAL JOURNAL 2020. [DOI: 10.18321/ectj925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
The article presents the results of obtaining nanosilver aqueous suspensions by electrolysis method with variations in the quality and composition of water, the type, and quantity of modifying additives, as well as the creation of colloidal compositions consisting of silicon dioxide and nanosilver emulsion as a result of mechanochemical treatment of the system. As a modifier of silver nanoparticles, citric acid, glycerin, and ether-cellulose were used, which can form the thinnest layers on the surface of the metal particle, preventing particles from sticking together and precipitating them. It is shown that the use of modifiers in the preparation of a colloidal solution with silver particles and ultrasonic treatment of the system provide an increase and stabilization of the activated state of colloidal systems with silver nanoparticles and silicon dioxide. Obtained under the influence of ultrasonic treatment homogeneous and resistant to delamination soft gel systems containing silver and having antimicrobial activity are promising for the manufacture of drugs for cosmetic purposes.
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494
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New Generation of Antibacterial Products Based on Colloidal Silver. MATERIALS 2020; 13:ma13071578. [PMID: 32235381 PMCID: PMC7177337 DOI: 10.3390/ma13071578] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/15/2020] [Revised: 03/13/2020] [Accepted: 03/25/2020] [Indexed: 12/30/2022]
Abstract
The main objective of the present paper is the green synthesis of colloidal silver by ultrasonication starting from silver nitrate and using soluble starch as the reducing agent. Soluble starch has been used during synthesis because it is a cheap and environmentally friendly reactive. Silver colloid has been characterized by physicochemical methods: UV–VIS spectroscopy, Scanning Electron Microscopy and Energy Dispersive X-Ray spectroscopy. This colloidal material was prepared in order to prove and establish its toxicity on heterotrophic bacteria. Toxicity tests were carried out using test cultures with and without silver colloid with different concentrations. This way was possible to establish the minimum silver concentration that presents a toxic effect against used bacteria. Quantitative evaluation of bacterial growth was performed by using the Most Probable Number method. By counting the bacterial colony number, the antibacterial effect was determined for colloidal silver deposited onto the cotton gauze by adsorption. During the present study, we optimized the adsorption specific parameters: solid:liquid ratio, temperature, contact time, colloidal silver concentration. By thermodynamic, equilibrium and kinetic studies, the adsorptive process mechanism was established.
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495
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El-Saadony MT, Abd El-Hack ME, Taha AE, Fouda MMG, Ajarem JS, N. Maodaa S, Allam AA, Elshaer N. Ecofriendly Synthesis and Insecticidal Application of Copper Nanoparticles against the Storage Pest Tribolium castaneum. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E587. [PMID: 32210153 PMCID: PMC7153705 DOI: 10.3390/nano10030587] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 03/16/2020] [Accepted: 03/18/2020] [Indexed: 11/16/2022]
Abstract
In spite of great developments in the agricultural field and plant productivity in the last decades, the concern about the control of agricultural pests is still continuous. However, pest management is expected to have more effects from nanomaterials by providing innovative solutions. The current study confirms the biotransformation of copper nanoparticles (CuNPs) using a cell-free culture extract of metal copper-resistant bacteria Pseudomonas fluorescens MAL2, which was isolated from heavy metal-contaminated soils collected from Sharqia Governorate, Egypt. The local screened bacterial isolate, Pseudomonas fluorescens MAL2, is similar to Pseudomonas fluorescens DSM 12442T DSM. After optimization of growth conditions, F-Base medium was found to be the best medium and pH 7, temperature 35 °C, concentration of CuSO4·5H2O 300 ppm, 10 mL supernatant: 40 mL CuSO4·5H2O (300 ppm), and reaction time 90 min were recorded as the best growth conditions to the fabrication of CuNPs. The formed CuNPs were characterized using initially visual observation of the change in the color of the reaction mixture from blue color to the dark green as an indication of CuNPs biotransformation. Then, UV-Vis spectroscopy showed a maximum absorption at 610 nm under the optimum conditions performed. Transmission Electron Microscopy (TEM) revealed the formation of spherical aspect with size ranges from 10:70 nm; moreover, Energy Dispersive X-ray spectroscopy (EDX) indicated the presence of CuNPs and other elements. In addition, the presence of alcohols, phenols, alkenes, and amines is confirmed by Fourier-Transform Infrared spectroscopy (FTIR) spectroscopy analysis. Dynamic Light Scattering (DLS) supported that the Zeta-average size of nanoparticle was 48.07 with 0.227 PdI value. The Zeta potential showed -26.00mV with a single peak. The biosynthesized CuNPs (Bio CuNPs) showed toxicity against the stored grain pest (Tribolium castaneum), where LC50 value was 37 ppm after 5 days of treatment. However, the negligible effect was observed with chemical synthesis of CuNPs (Ch CuNPs) at the same concentration. The results suggest that Bio CuNPs could be used not only as a biocontrol agent, but also as an ecofriendly and inexpensive approach for controlling the stored grain pests.
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Affiliation(s)
- Mohamed T. El-Saadony
- Department of Agricultural Microbiology, Faculty of Agriculture, Zagazig University, Zagazig 44511, Egypt
| | | | - Ayman E. Taha
- Department of Animal Husbandry and Animal Wealth Development, Faculty of Veterinary Medicine, Alexandria University, Edfina 22758, Egypt
| | - Moustafa M. G. Fouda
- Pretreatment and Finishing of Cellulosic-based Fibers Department, Textile Industries Research Division, National Research Centre, 33 El-Buhouth Street, Dokki, Cairo 12622, Egypt;
| | - Jamaan S. Ajarem
- Department of Zoology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia; (J.S.A.); (S.N.M.)
| | - Saleh N. Maodaa
- Department of Zoology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia; (J.S.A.); (S.N.M.)
| | - Ahmed A. Allam
- Department of Zoology, Faculty of Science, Beni-suef University, Beni-suef 65211, Egypt;
| | - Nashwa Elshaer
- Department of Plant Protection, Faculty of Agriculture, Zagazig University, Zagazig 44511, Egypt;
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496
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Garg K, Papponen P, Johansson A, Puttaraksa N, Gilbert L. Preparation of graphene nanocomposites from aqueous silver nitrate using graphene oxide's peroxidase-like and carbocatalytic properties. Sci Rep 2020; 10:5126. [PMID: 32198378 PMCID: PMC7083964 DOI: 10.1038/s41598-020-61929-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Accepted: 02/25/2020] [Indexed: 11/30/2022] Open
Abstract
The present study evaluates the role of graphene oxide’s (GO’s) peroxidase-like and inherent/carbocatalytic properties in oxidising silver nitrate (AgNO3) to create graphene nanocomposites with silver nanoparticles (GO/Ag nanocomposite). Activation of peroxidase-like catalytic function of GO required hydrogen peroxide (H2O2) and ammonia (NH3) in pH 4.0 disodium hydrogen phosphate (Na2HPO4). Carbocatalytic abilities of GO were triggered in pH 4.0 deionised distilled water (ddH2O). Transmission electron microscope (TEM), scanning electron microscope (SEM), cyclic voltammetry (CV) and UV-Vis spectroscopy aided in qualitatively and quantitatively assessing GO/Ag nanocomposites. TEM and SEM analysis demonstrated the successful use of GO’s peroxidase-like and carbocatalytic properties to produce GO/Ag nanocomposite. UV-Vis analysis indicated a higher yield in optical density values for GO/Ag nanocomposites created using GO’s carbocatalytic ability rather than its peroxidase-like counterpart. Additionally, CV demonstrated that GO/Ag nanocomposite fabricated here is a product of an irreversible electrochemical reaction. Our study outcomes show new opportunities for GO as a standalone catalyst in biosensing. We demonstrate a sustainable approach to obtain graphene nanocomposites exclusive of harmful chemicals or physical methods.
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Affiliation(s)
- Kunal Garg
- Department of Biological and Environmental Sciences, NanoScience Center, University of Jyväskylä, Jyväskylä, Finland.,Te?ted Ltd, Mattilaniemi 6-8, Jyväskylä, Finland
| | - Petri Papponen
- Department of Biological and Environmental Sciences, NanoScience Center, University of Jyväskylä, Jyväskylä, Finland
| | - Andreas Johansson
- Department of Chemistry, NanoScience Center, University of Jyväskylä, Jyväskylä, Finland.,Department of Physics, NanoScience Center, University of Jyväskylä, Jyväskylä, Finland
| | - Nitipon Puttaraksa
- Faculty of Science and Nanoscience & Nanotechnology, Graduate Program, King Mongkut's University of Technology Thonburi, Bangkok, Thailand
| | - Leona Gilbert
- Department of Biological and Environmental Sciences, NanoScience Center, University of Jyväskylä, Jyväskylä, Finland. .,Te?ted Ltd, Mattilaniemi 6-8, Jyväskylä, Finland.
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497
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Naskar A, Lee S, Kim KS. Easy One-Pot Low-Temperature Synthesized Ag-ZnO Nanoparticles and Their Activity Against Clinical Isolates of Methicillin-Resistant Staphylococcus aureus. Front Bioeng Biotechnol 2020; 8:216. [PMID: 32266243 PMCID: PMC7096348 DOI: 10.3389/fbioe.2020.00216] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Accepted: 03/03/2020] [Indexed: 11/13/2022] Open
Abstract
Antimicrobial resistance (AMR) is widely acknowledged as a global health problem, yet the available solutions to this problem are limited. Nanomaterials can be used as potential nanoweapons to fight against this problem. In this study, we report an easy one-pot low-temperature synthesis of Ag-ZnO nanoparticles (AZO NPs) and their targeted antibacterial activity against methicillin-resistant Staphylococcus aureus (MRSA) strains. The physical properties of the samples were characterized by X-ray diffractometry (XRD), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS). Furthermore, minimum inhibitory concentration (MIC), zone of inhibition (ZOI), and scanning electron microscopy (SEM) images for morphological characterization of bacteria were assessed to evaluate the antibacterial activity of AZO NPs against both Gram-negative [Escherichia coli (E. coli) and Acinetobacter baumannii (A. baumannii) standard and AMR strains] and Gram-positive (S. aureus, MRSA3, and MRSA6) bacteria. The AZO NPs showed comparatively better antibacterial activity against S. aureus and MRSA strains than Gram-negative bacterial strains. This cost-effective and simple synthesis strategy can be used for the development of other metal oxide nanoparticles, and the synthesized nanomaterials can be potentially used to fight against MRSA.
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Affiliation(s)
| | | | - Kwang-sun Kim
- Laboratory of RNA Biochemistry & Superbacteria Research, Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan, South Korea
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498
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Hemocompatibility of Silver Nanoparticles Based on Conjugate of Quaternized Chitosan with Gallic Acid in In Vitro Experiments. Bull Exp Biol Med 2020; 168:507-511. [PMID: 32147767 DOI: 10.1007/s10517-020-04742-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Indexed: 12/11/2022]
Abstract
We studied hemocompatibility of silver nanoparticles synthesized on the basis of a conjugate of quaternized chitosan with gallic acid (QChit-Gal). For the three variants of silver particles (Nos. 1, 2, and 3), the QChit-Gal:AgNO3 ratio was 5:1, 5:3, and 1:1, respectively. Anticoagulant activity of all samples of silver nanoparticles was lower than that of the conjugate. Samples of nanoparticles Nos. 1 and 2 in a concentration of 0.0233 mg/ml did not affect plasma clotting time and can be used for intravenous administration. However, their concentration in the blood should not exceed 0.01 mg/ml, because in this concentration they do not affect erythrocyte membrane, do not induce platelet aggregation, and do not affect platelet aggregation induced by ADP.
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499
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Silvestri D, Wacławek S, Venkateshaiah A, Krawczyk K, Sobel B, Padil VV, Černík M, Varma RS. Synthesis of Ag nanoparticles by a chitosan-poly(3-hydroxybutyrate) polymer conjugate and their superb catalytic activity. Carbohydr Polym 2020; 232:115806. [DOI: 10.1016/j.carbpol.2019.115806] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Revised: 12/28/2019] [Accepted: 12/29/2019] [Indexed: 11/16/2022]
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Mujeeb AA, Khan NA, Jamal F, Badre Alam KF, Saeed H, Kazmi S, Alshameri AWF, Kashif M, Ghazi I, Owais M. Olax scandens Mediated Biogenic Synthesis of Ag-Cu Nanocomposites: Potential Against Inhibition of Drug-Resistant Microbes. Front Chem 2020; 8:103. [PMID: 32185160 PMCID: PMC7058794 DOI: 10.3389/fchem.2020.00103] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2019] [Accepted: 02/04/2020] [Indexed: 01/12/2023] Open
Abstract
In the present study, we have synthesized silver-copper nanocomposites (Ag-Cu NCs) using an Olax scandens leaf extract (green synthesis method) and evaluated their antimicrobial potential against less susceptible pathogens. The kinetics of Ag-Cu NCs synthesis was followed by UV-VIS and fluorescence spectroscopy. The physicochemical characterization of as-synthesized Ag-Cu NCs was executed using electron microscopy, Energy Dispersive X-Ray, Fourier Transform Infrared Spectroscopy, and a Differential Light Scattering method. As-synthesized Ag-Cu NCs induced the formation of Reactive Oxygen Species (ROS), thereby causing alteration and decrementation of cellular proteins, DNA, lipids, etc., and eventually leading to cell death, as determined by a Live/Dead assay. Next, we assessed the anti-biofilm potential of as-synthesized Ag-Cu NCs against biofilm forming bacteria. The as-synthesized Ag-Cu NCs, when compared to monometallic silver nanoparticles, exhibited significantly higher anti-microbial activity against both sensitive as well as drug resistant microbial isolates.
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Affiliation(s)
- Anzar Abdul Mujeeb
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, India
| | - Nuha Abeer Khan
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, India
| | - Fauzia Jamal
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, India
| | | | - Haris Saeed
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, India
| | - Shadab Kazmi
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, India
| | | | - Mohammad Kashif
- Plant Molecular Biology and Genetic Engineering Division, The National Botanical Research Institute, Council of Scientific and Industrial Research, Lucknow, India
| | - Irfan Ghazi
- Department of Biochemistry, School of Life Sciences, University of Hyderabad, Hyderabad, India
| | - Mohammad Owais
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, India
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