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Dash SS, Samanta S, Dey S, Giri B, Dash SK. Rapid Green Synthesis of Biogenic Silver Nanoparticles Using Cinnamomum tamala Leaf Extract and its Potential Antimicrobial Application Against Clinically Isolated Multidrug-Resistant Bacterial Strains. Biol Trace Elem Res 2020; 198:681-696. [PMID: 32180127 DOI: 10.1007/s12011-020-02107-w] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Accepted: 03/03/2020] [Indexed: 02/07/2023]
Abstract
Cinnamomum tamala is Indian bay leaves also known as Tej patta commonly used in the preparation of delicious food for its sweet aroma and tremendous medicinal values. In this study, the significant concentration-dependent free radical scavenging and antioxidant efficacy of the aqueous extracts of bay leaves has been determined using DPPH (2, 2-diphenyl-l-picrylhydrazyl) radical scavenging, ferric ion-reducing power assay, and hydrogen peroxide radical scavenging assay. The leaf extract has also been utilized in the rapid synthesis of silver nanoparticles (AgNPs) under mild conditions (30 min reaction time at 70 °C) without the addition of extra stabilizing or capping agents. Mostly spherical shaped particles were formed with diameter ranging from 10 to 12 nm as evident by HRTEM imaging. The silver nanoparticles were also characterized using FTIR, XRD, and UV-visible spectroscopic techniques. The antibacterial effect of the synthesized AgNPs was studied against three clinically isolated multidrug-resistant bacterial strains (Escherichia coli (EC-1), Klebsiella pneumonia (KP-1), and Staphylococcus aureus (SA-1)). The minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) of AgNPs against EC-1 were 12.5 and 15 μg/mL and in SA-1 were 10 and 50 μg/mL, and in the case of KP-1, both values were 12.5 μg/mL. It was also noted that 8 h treatment duration using AgNPs was sufficient to eliminate all types of bacterial growth as evidenced by time-dependent killing kinetic assays. The biocompatibilities of AgNPs were also tested against human health RBCs, and it was observed that it did not show any significant toxicity up to 50 μg/mL concentration.
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Affiliation(s)
- Shib Shankar Dash
- Department of Chemistry, Government General Degree College, Salboni , Paschim Medinipur, West Bengal, 721516, India.
| | - Sovan Samanta
- Department of Physiology, University of Gour Banga, Malda, West Bengal, 732103, India
| | - Sananda Dey
- Department of Physiology, University of Gour Banga, Malda, West Bengal, 732103, India
| | - Biplab Giri
- Department of Physiology, University of Gour Banga, Malda, West Bengal, 732103, India
| | - Sandeep Kumar Dash
- Department of Physiology, University of Gour Banga, Malda, West Bengal, 732103, India
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Niloy MS, Hossain MM, Takikawa M, Shakil MS, Polash SA, Mahmud KM, Uddin MF, Alam M, Shubhra RD, Shawan MMAK, Saha T, Takeoka S, Hasan MA, Ranjan Sarker S. Synthesis of Biogenic Silver Nanoparticles Using Caesalpinia digyna and Investigation of Their Antimicrobial Activity and In Vivo Biocompatibility. ACS APPLIED BIO MATERIALS 2020; 3:7722-7733. [PMID: 35019512 DOI: 10.1021/acsabm.0c00926] [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] [Indexed: 12/24/2022]
Abstract
Among metallic nanoparticles, silver nanoparticles (AgNPs) have a wide spectrum of medical applications. Herein, biogenic silver nanoparticles (bAgNPs) were prepared from extracts of Caesalpinia digyna leaf as a reducing agent at different pH values (i.e., 5, 7, 8, and 10). The as-synthesized bAgNPs were characterized using UV-vis and Fourier transform infrared (FTIR) spectroscopies, scanning transmission electron microscopy, powder X-ray diffraction analysis, dynamic light scattering, and ζ-potential analysis. The sizes of bAgNPs prepared at pH 5, 7, 8, and 10 were 45.4, 11.3, 11.4, and 40.8 nm, respectively, and all of the nanoparticles were negatively charged. The antimicrobial activity of the as-prepared bAgNPs was investigated against Bacillus subtilis, Escherichia coli DH5α, E. coli K12, enteropathogenic E. coli (EPEC), and Salmonella typhi. The bAgNPs prepared at pH 8 showed the highest antibacterial propensity against all of the bacterial strains as exhibited in the zone of inhibition (ZOI) as well as the CellTox green assay, which can be due to their relatively small size, stability, and higher surface area-to-volume ratio. The bAgNPs synthesized at pH 8 showed the highest ZOI against B. subtilis, which was ∼25 mm in diameter. The lipid peroxidation assay demonstrated the formation of the malondialdehyde-thiobarbituric acid (MDA-TBA) adduct while treating the bacteria with bAgNPs due to the oxidation of fatty acids present in the membrane. The highest amount of MDA-TBA adduct was observed when Gram-positive B. subtilis was exposed to bAgNPs. On the contrary, rats treated with bAgNPs demonstrated no significant toxicity in terms of hematological and biochemical parameters. The bAgNPs also showed excellent compatibility with human red blood cells. Overall, bAgNPs synthesized at pH 8 have superior antimicrobial activity and excellent biocompatibility and, therefore, can be used as potential antibacterial agents.
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Affiliation(s)
- Mahruba Sultana Niloy
- Department of Biochemistry and Molecular Biology, Jahangirnagar University, Savar, Dhaka 1342, Bangladesh
| | - Md Monir Hossain
- Department of Biotechnology and Genetic Engineering, Jahangirnagar University, Savar, Dhaka 1342, Bangladesh
| | - Masato Takikawa
- Department of Advanced Science and Engineering, Waseda University (TWIns), Shinjuku-ku, Tokyo 162-8480, Japan
| | - Md Salman Shakil
- Department of Biochemistry and Molecular Biology, Jahangirnagar University, Savar, Dhaka 1342, Bangladesh
| | - Shakil Ahmed Polash
- Department of Biotechnology and Genetic Engineering, Jahangirnagar University, Savar, Dhaka 1342, Bangladesh.,Nano Biotechnology Research Laboratory (NBRL), School of Science, RMIT University, Melbourne, Victoria 3001, Australia
| | - Kazi Mustafa Mahmud
- Department of Biochemistry and Molecular Biology, Jahangirnagar University, Savar, Dhaka 1342, Bangladesh
| | - Md Forhad Uddin
- Department of Biochemistry and Molecular Biology, Jahangirnagar University, Savar, Dhaka 1342, Bangladesh
| | - Morshed Alam
- Department of Biochemistry and Molecular Biology, Jahangirnagar University, Savar, Dhaka 1342, Bangladesh
| | - Razib Datta Shubhra
- Department of Biotechnology and Genetic Engineering, Jahangirnagar University, Savar, Dhaka 1342, Bangladesh
| | | | - Tanushree Saha
- Department of Textile Engineering, Dhaka University of Engineering and Technology, Gazipur 1707, Bangladesh.,School of Engineering, RMIT University, Melbourne, Victoria 3001, Australia
| | - Shinji Takeoka
- Department of Life Science and Medical Bioscience, Graduate School of Advanced Science and Engineering, Waseda University (TWIns), Shinjuku-ku, Tokyo 162-8480, Japan
| | - Md Ashraful Hasan
- Department of Biochemistry and Molecular Biology, Jahangirnagar University, Savar, Dhaka 1342, Bangladesh
| | - Satya Ranjan Sarker
- Department of Biotechnology and Genetic Engineering, Jahangirnagar University, Savar, Dhaka 1342, Bangladesh
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53
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Naomi R, Bt Hj Idrus R, Fauzi MB. Plant- vs. Bacterial-Derived Cellulose for Wound Healing: A Review. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:E6803. [PMID: 32961877 PMCID: PMC7559319 DOI: 10.3390/ijerph17186803] [Citation(s) in RCA: 65] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Revised: 08/26/2020] [Accepted: 08/28/2020] [Indexed: 12/16/2022]
Abstract
Cellulose is a naturally existing element in the plant's cell wall and in several bacteria. The unique characteristics of bacterial cellulose (BC), such as non-toxicity, biodegradability, hydrophilicity, and biocompatibility, together with the modifiable form of nanocellulose, or the integration with nanoparticles, such as nanosilver (AgNP), all for antibacterial effects, contributes to the extensive usage of BC in wound healing applications. Due to this, BC has gained much demand and attention for therapeutical usage over time, especially in the pharmaceutical industry when compared to plant cellulose (PC). This paper reviews the progress of related research based on in vitro, in vivo, and clinical trials, including the overall information concerning BC and PC production and its mechanisms in wound healing. The physicochemical differences between BC and PC have been clearly summarized in a comparison table. Meanwhile, the latest Food and Drug Administration (FDA) approved BC products in the biomedical field are thoroughly discussed with their applications. The paper concludes on the need for further investigations of BC in the future, in an attempt to make BC an essential wound dressing that has the ability to be marketable in the global marketplace.
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Affiliation(s)
- Ruth Naomi
- Centre for Tissue Engineering and Regenerative Medicine, Faculty of Medicine, Universiti Kebangsaan Malaysia, Cheras, Kuala Lumpur 56000, Malaysia; (R.N.); (R.B.H.I.)
| | - Ruszymah Bt Hj Idrus
- Centre for Tissue Engineering and Regenerative Medicine, Faculty of Medicine, Universiti Kebangsaan Malaysia, Cheras, Kuala Lumpur 56000, Malaysia; (R.N.); (R.B.H.I.)
- Department of Physiology, Faculty of Medicine, Universiti Kebangsaan Malaysia, Cheras, Kuala Lumpur 56000, Malaysia
| | - Mh Busra Fauzi
- Centre for Tissue Engineering and Regenerative Medicine, Faculty of Medicine, Universiti Kebangsaan Malaysia, Cheras, Kuala Lumpur 56000, Malaysia; (R.N.); (R.B.H.I.)
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54
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Jing L, Moloney MG, Xu H, Liu L, Sun W, Li J, Yang P. Carbene modification and reversible crosslinking of silver nanoparticles for controlled antibacterial activity. Sci Rep 2020; 10:14937. [PMID: 32913281 PMCID: PMC7484751 DOI: 10.1038/s41598-020-72043-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Accepted: 08/24/2020] [Indexed: 11/10/2022] Open
Abstract
Silver nanoparticles (Ag NPs) system capable of exhibiting different particle size at different temperature was developed, which depended on the extent of Diels-Alder (DA) reaction of bismaleimide with furan. Thus, Ag NPs were functionalized on the surface by a furyl-substituted carbene through an insertion reaction. Subsequent reversible DA crosslinking achieved a controlled aggregation with different particle size, which gives a series of different antibacterial activity. These Ag NPs were characterized by Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), X-ray Photoelectron Spectroscopy (XPS), and Nanoparticle Size Analyzer. The aggregation of the Ag NPs could be reliably adjusted by varying the temperature of DA/reverse-DA reaction. The antibacterial activity was assessed using the inhibition zone method against Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus), which decreased first and then increased in agreement with the size evolution of Ag NPs. This approach opens a new horizon for the carbene chemistry to modify silver nanoparticles with variable size and give controlled antibacterial activity.
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Affiliation(s)
- Liling Jing
- School of Chemistry and Pharmaceutical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353, People's Republic of China
| | - Mark G Moloney
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Oxford, OX1 3TA, UK
- Oxford Suzhou Centre for Advanced Research, Suzhou, 215123, People's Republic of China
| | - Hao Xu
- School of Chemistry and Pharmaceutical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353, People's Republic of China
| | - Lian Liu
- School of Chemistry and Pharmaceutical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353, People's Republic of China
| | - Wenqiang Sun
- School of Chemistry and Pharmaceutical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353, People's Republic of China
| | - Junying Li
- School of Chemistry and Pharmaceutical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353, People's Republic of China
| | - Pengfei Yang
- School of Chemistry and Pharmaceutical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353, People's Republic of China.
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55
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Hassanien AA, Shaker EM. Investigation of the effect of chitosan and silver nanoparticles on the antibiotic resistance of Escherichia coliO157:H7 isolated from some milk products and diarrheal patients in Sohag city, Egypt. Vet World 2020; 13:1647-1653. [PMID: 33061240 PMCID: PMC7522957 DOI: 10.14202/vetworld.2020.1647-1653] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Accepted: 06/29/2020] [Indexed: 12/02/2022] Open
Abstract
BACKGROUND AND AIM Antimicrobial-resistant Escherichia coli O157:H7 causes serious diseases in humans, especially when circulated in their food. This study was designed to detect the presence of E. coli O157:H7 using the fliC H7 gene in some milk products as kareish cheese, labena, and yoghurt sold in Sohag city, Egypt, and among diarrheal patients admitted to governmental hospitals in Sohag and also to highlight the risk factors associated with their infection. In addition, the antimicrobial resistance and the effect of chitosan nanoparticles (CNP) and silver nanoparticles (SNP) on E. coli O157:H7 isolates obtained from both milk products and patients were investigated. MATERIALS AND METHODS Microbiological culture methods and polymerase chain reaction were used for detecting E. coli O157:H7 in 150 milk products and 150 stool samples. Resistance against some antimicrobials that were used in the treatment of animals and humans was investigated using the disk diffusion technique. CNP and SNP at two concentrations (30 and 60 μg/mL) and average sizes of 25.1 and 26.5 nm, respectively, were identified by transmission electron microscopy. Their effect on E. coli O157:H7 isolates was examined using the well diffusion method. Risk factors for infection were investigated using statistical analysis. RESULTS There were 11.3% and 14.7% of milk products and stool samples positive for E. coli O157:H7, respectively. These isolates exhibited high antimicrobial resistance to ampicillin, tetracycline, and gentamycin. CNP and SNP demonstrated inhibitory effects on E. coli O157:H7 growth, which significantly increased at high concentrations (60 μg/mL), with mean inhibition zones of 31.941±3.749 and 30.681±3.871 mm for CNP in milk products and patient isolates, respectively. The respective values for SNP were 33.588±3.675 mm and 32.500±2.444 mm, indicating a higher bactericidal effect than that of CNP. Regarding risk factors for infection, both young and elderly subjects and those in contact with infected persons and/or having chronic diseases were infected. CONCLUSION CNP and SNP are suitable for both medical and agricultural applications for disease control and enhancement of food quality.
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Affiliation(s)
- Alshimaa A. Hassanien
- Department of Zoonoses, Faculty of Veterinary Medicine, Sohag University, Sohag 82511, Egypt
| | - Eman M. Shaker
- Department of Milk Hygiene, Faculty of Veterinary Medicine, Sohag University, Sohag 82511, Egypt
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56
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Nicholas TP, Haick AK, Workman TW, Griffith WC, Nolin JD, Kavanagh TJ, Faustman EM, Altemeier WA. The effects of genotype × phenotype interactions on silver nanoparticle toxicity in organotypic cultures of murine tracheal epithelial cells. Nanotoxicology 2020; 14:908-928. [PMID: 32574512 DOI: 10.1080/17435390.2020.1777475] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Silver nanoparticles (AgNP) are used in multiple applications but primarily in the manufacturing of antimicrobial products. Previous studies have identified AgNP toxicity in airway epithelial cells, but no in vitro studies to date have used organotypic cultures as a high-content in vitro model of the conducting airway to characterize the effects of interactions between host genetic and acquired factors, or gene × phenotype interactions (G × P), on AgNP toxicity. In the present study, we derived organotypic cultures from primary murine tracheal epithelial cells (MTEC) to characterize nominal and dosimetric dose-response relationships for AgNPs with a gold core on barrier dysfunction, glutathione (GSH) depletion, reactive oxygen species (ROS) production, lipid peroxidation, and cytotoxicity across two genotypes (A/J and C57BL/6J mice), two phenotypes ('Normal' and 'Type 2 [T2]-Skewed'), and two exposures (an acute exposure of 24 h and a subacute exposure of 4 h, every other day, over 5 days [5 × 4 h]). We characterized the 'T2-Skewed' phenotype as an in vitro model of chronic respiratory diseases, which was marked by increased sensitivity to AgNP-induced barrier dysfunction, GSH depletion, ROS production, lipid peroxidation, and cytotoxicity, suggesting that asthmatics are a sensitive population to AgNP exposures in occupational settings. This also suggests that exposure limits, which should be based upon the most sensitive population, should be derived using in vitro and in vivo models of chronic respiratory diseases. This study highlights the importance of considering dosimetry as well as G × P effects when screening and prioritizing potential respiratory toxicants. Such in vitro studies can be used to inform regulatory policy aimed at special protections for all populations.
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Affiliation(s)
- Tyler P Nicholas
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, WA, USA.,Center for Lung Biology, University of Washington, Seattle, WA, USA
| | - Anoria K Haick
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Tomomi W Workman
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, WA, USA
| | - William C Griffith
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, WA, USA
| | - James D Nolin
- Center for Lung Biology, University of Washington, Seattle, WA, USA
| | - Terrance J Kavanagh
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, WA, USA.,Center for Lung Biology, University of Washington, Seattle, WA, USA
| | - Elaine M Faustman
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, WA, USA
| | - William A Altemeier
- Center for Lung Biology, University of Washington, Seattle, WA, USA.,Department of Medicine, University of Washington, Seattle, WA, USA
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57
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Active delivery of antimicrobial nanoparticles into microbial cells through surface functionalization strategies. Trends Food Sci Technol 2020. [DOI: 10.1016/j.tifs.2020.03.008] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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58
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Abdulrehman T, Qadri S, Skariah S, Sultan A, Mansour S, Azzi J, Haik Y. Boron doped silver-copper alloy nanoparticle targeting intracellular S. aureus in bone cells. PLoS One 2020; 15:e0231276. [PMID: 32275737 PMCID: PMC7147743 DOI: 10.1371/journal.pone.0231276] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Accepted: 03/19/2020] [Indexed: 02/08/2023] Open
Abstract
OBJECTIVES Alloyed metallic nanoparticles of silver and copper are effective against intracellular infection. However, systemic toxicity may arise due to the non-specific delivery of the nanoparticles. In addressing the issue, this study deals with the targeting of silver-copper-boron (ACB) nanoparticles to infected osteoblasts, which could decrease systemic toxicity and form the basis of targeting specific markers expressed in bone infections. METHODS ACB nanoparticles were synthesized and conjugated to the Cadherin-11 antibody (OBAb). The effect of targeting nanoparticles against extracellular and intracellular S. aureus was determined by enumeration of bacterial growth. The binding of the targeting nanoparticles to infected osteoblasts as well as the visualization of live/dead bacteria due to treatment was carried out using fluorescence microscopy. MTT assay was used to determine the viability of osteoblasts with different concentrations of the nanoparticles. RESULTS The ACB nanoparticles conjugated to OBAb (ACB-OBAb) were effective against extracellular S. aureus. The ACB-OBAb nanoparticles showed a 1.32 log reduction of intracellular S. aureus at a concentration of 1mg/L. The ACB-OBAb nanoparticles were able to bind to the infected osteoblast and showed toxicity to osteoblasts at levels ≥20mg/L. Also, the percentage of silver, copper, and boron in the nanoparticles determined the effectiveness of their antibacterial activity. CONCLUSION The ACB-OBAb nanoparticles were able to target the osteoblasts and demonstrated significant antibacterial activity against intracellular S. aureus. Targeting shows promise as a strategy to target specific markers expressed on infected osteoblasts for efficient nanoparticle delivery, and further animal studies are recommended to test its efficacy in vivo.
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Affiliation(s)
- Tahir Abdulrehman
- College of Health and Life Sciences, Hamad Bin Khalifa University, Doha, Qatar
| | - Shahnaz Qadri
- College of Science and Engineering, Hamad Bin Khalifa University, Doha, Qatar
| | - Sini Skariah
- Weil Cornell Medicine-Qatar, Education City, Doha, Qatar
| | - Ali Sultan
- Weil Cornell Medicine-Qatar, Education City, Doha, Qatar
| | - Said Mansour
- Qatar Environment and Energy Research Institute (QEERI), Hamad Bin Khalifa University, Doha, Qatar
| | - Jamil Azzi
- Brigham and Women’s Hospital, Harvard Medical School, Boston, United States of America
| | - Yousef Haik
- College of Science and Engineering, Hamad Bin Khalifa University, Doha, Qatar
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59
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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: 368] [Impact Index Per Article: 92.0] [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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60
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Syafiuddin A, Fulazzaky MA, Salmiati S, Roestamy M, Fulazzaky M, Sumeru K, Yusop Z. Sticky silver nanoparticles and surface coatings of different textile fabrics stabilised by Muntingia calabura leaf extract. SN APPLIED SCIENCES 2020. [DOI: 10.1007/s42452-020-2534-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
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61
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Lethongkam S, Daengngam C, Tansakul C, Siri R, Chumpraman A, Phengmak M, Voravuthikunchai SP. Prolonged inhibitory effects against planktonic growth, adherence, and biofilm formation of pathogens causing ventilator-associated pneumonia using a novel polyamide/silver nanoparticle composite-coated endotracheal tube. BIOFOULING 2020; 36:292-307. [PMID: 32367731 DOI: 10.1080/08927014.2020.1759041] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Revised: 04/15/2020] [Accepted: 04/19/2020] [Indexed: 06/11/2023]
Abstract
Microbial cells can rapidly form biofilm on endotracheal tubes (ETT) causing ventilator-associated pneumonia, a serious complication in patients receiving mechanical ventilation. A novel polyamide with a good balance of hydrophilic/hydrophobic moieties was used for the embedment of green-reduction silver nanoparticles (AgNPs) for the composite-coated ETT. The films were conformal with a thickness of ∼ 17 ± 3 µm accommodating high loading of 60 ± 35 nm spherical-shaped AgNPs. The coated ETT resulted in a significant difference in reducing both planktonic growth and microbial adhesion of single and mixed-species cultures, compared with uncoated ETT (p < 0.05). A time-kill assay demonstrated rapid bactericidal effects of the coating on bacterial growth and cell adhesion to ETT surface. Biofilm formation by Pseudomonas aeruginosa and Staphylococcus aureus, commonly encountered pathogens, was inhibited by > 96% after incubation for 72 h. Polyamide/AgNP composite-coated ETT provided a broad-spectrum activity against both Gram-positive and Gram-negative bacteria as well as Candida albicans and prolonged antimicrobial activity.
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Affiliation(s)
- Sakkarin Lethongkam
- Department of Microbiology, Faculty of Science and Natural Product Research Center of Excellence, Excellence Research Laboratory on Natural Products, Prince of Songkla University, Hat Yai, Songkhla, Thailand
| | - Chalongrat Daengngam
- Department of Physics, Faculty of Science, Prince of Songkla University, Songkhla, Thailand
| | - Chittreeya Tansakul
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Prince of Songkla University, Songkhla, Thailand
| | - Ratchaneewan Siri
- Department of Physics, Faculty of Science, Prince of Songkla University, Songkhla, Thailand
| | - Apisit Chumpraman
- Department of Microbiology, Faculty of Science and Natural Product Research Center of Excellence, Excellence Research Laboratory on Natural Products, Prince of Songkla University, Hat Yai, Songkhla, Thailand
| | - Manthana Phengmak
- Department of Pathology, Faculty of Medicine, Clinical Microbiology Unit, Prince of Songkla University, Hat Yai, Songkhla, Thailand
| | - Supayang P Voravuthikunchai
- Department of Microbiology, Faculty of Science and Natural Product Research Center of Excellence, Excellence Research Laboratory on Natural Products, Prince of Songkla University, Hat Yai, Songkhla, Thailand
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62
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Wu L, Zhu G, Zhang X, Si Y. Silver nanoparticles inhibit denitrification by altering the viability and metabolic activity of Pseudomonas stutzeri. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 706:135711. [PMID: 31791784 DOI: 10.1016/j.scitotenv.2019.135711] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Revised: 10/17/2019] [Accepted: 11/21/2019] [Indexed: 06/10/2023]
Abstract
The environmental toxicity of silver nanoparticles (AgNPs) is currently the focus of intensive research. However, the mechanisms underlying the cytotoxic effects of AgNPs on denitrifying microbes have yet to be explicitly demonstrated. Herein, Pseudomonas stutzeri was used to explore the effects of AgNPs on denitrification and cytotoxicity. The denitrification efficiency decreased from 94.91% in the AgNP-free treatment to 87.66%, 60.51% and 36.10% with treatments of 3.125, 6.25 and 12.5 mg/L AgNPs, respectively. The inhibition and delay in the denitrification process from treatment with AgNPs likely occurred through alteration of the viability and metabolic activity of P. stutzeri. Flow cytometry analysis indicated that the early apoptotic rates of P. stutzeri were 8.72%, 30.60%, and 48.60% with treatments of 3.125, 6.25, and 12.5 mg/L AgNPs, respectively. Results for scanning electron microscope (SEM) imaging, ζ-potential analysis, lactate dehydrogenase (LDH) release and malondialdehyde (MDA) production assays demonstrated adsorption of AgNPs on the cell surface, which altered membrane potential and mediated lipid peroxidation; these events eventually resulted in the aberration of cell morphology. Transmission electron microscopy (TEM) images and measurements of Ag content distribution by ICP-MS indicated that AgNPs were easily internalized by P. stutzeri, which increased the accumulation of reactive oxygen species (ROS). Furthermore, the presence of AgNPs also greatly inhibited expression of genes napA, nirS, cnorB, and nosZ, thereby reducing the activities of nitrate reductase (NAR) and nitrite reductase (NIR). These findings will help further our understanding of the mechanism underlying AgNPs cytotoxicity, and provide the means to evaluate the negative effect of nanoparticles in the environment.
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Affiliation(s)
- Lingli Wu
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei, China
| | - Guangsen Zhu
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei, China
| | - Xiaoxue Zhang
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei, China
| | - Youbin Si
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei, China.
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Demyashkin G, Kogan E, Borozdkin L, Demura T, Shalamova E, Centroev Z, Ivanova I, Gevandova M, Smirnova-Sotmari V, Kalinin S. Immunohistochemical and morphological characteristics of tissues response to polylactic acid membranes with silver nanoparticles. Med Oral Patol Oral Cir Bucal 2020; 25:e29-e33. [PMID: 31880292 PMCID: PMC6982983 DOI: 10.4317/medoral.23171] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Accepted: 12/16/2019] [Indexed: 11/17/2022] Open
Abstract
Background The aim of this research was to study anti-microbial and anti-inflammatory characteristics of silver nanoparticles helping bone structures to recover during late stage of parodontitis, which afterwards will increase the effect of bone regeneration operations.
Material and Methods We assessed colloid solution-derived silver nanoparticles coating of polylactic acid membrane regarding tissue foreign body response. Thirty eight polylactic acid membranes were implanted intracranially in rabbits – ten unmodified (control group) and twenty eight with silver nanoparticles coating (experimental group). In controls, penicillin was used for infection prophylaxis. Tissue response was assessed by light microscopy and immunohistochemistry (CD3, CD15, CD30) 2 weeks after implantation.
Results inflammation markers in experimental group were significantly lower than in control group, there were no signs of forming a fibrosis capsule nor infectious signs.
Conclusions colloid silver solution can be used as a source of nanoparticles for anti-microbial and anti-inflammatory biodegradable membranes’ coating. Key words:Guided bone regeneration, polylactic acid membrane, silver nanoparticles.
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Affiliation(s)
- G Demyashkin
- Department of Pathology Sechenov First Moscow State Medical University 119991, ul. Trubetskaya, 8, Moscow, Russia
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Lehtonen J, Hassinen J, Honkanen R, Kumar AA, Viskari H, Kettunen A, Pahimanolis N, Pradeep T, Rojas OJ, Ikkala O. Effects of Chloride Concentration on the Water Disinfection Performance of Silver Containing Nanocellulose-based Composites. Sci Rep 2019; 9:19505. [PMID: 31862996 PMCID: PMC6925197 DOI: 10.1038/s41598-019-56009-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Accepted: 11/28/2019] [Indexed: 11/09/2022] Open
Abstract
The availability of microbially-safe drinking water is a challenge in many developing regions. Due to the well-known antibacterial effect of silver ions, materials used for their controlled release have been widely studied for point-of-use water disinfection. However, even if it is in principle known that chloride anions can suppress the antibacterial efficiency of silver, the majority of previous studies, surprisingly, have not focused on chloride concentrations relevant for freshwaters and thus for practical applications. Here, we prepared low-cost nanocellulose-aluminium oxyhydroxide nanocomposites functionalized with silver nanoparticles. Field samples obtained from Chennai, India were used as a guideline for choosing relevant chloride concentrations for the antibacterial studies, i.e., 10, 90, and 290 ppm. The antibacterial performance of the material against Escherichia coli and Bacillus subtilis was demonstrated and the influence of chloride concentration on the antibacterial effect was studied with E. coli. A 1 h contact time led to bacterial reductions of 5.6 log10, 2.9 log10, and 2.2 log10, respectively. This indicates that an increase of chloride concentration leads to a substantial reduction of antibacterial efficiency, even within chloride concentrations found in freshwaters. This work enables further insights for designing freshwater purification systems that utilize silver-releasing materials.
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Affiliation(s)
- Janika Lehtonen
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, P. O. Box 16300, FI-00076, Aalto, Espoo, Finland
| | - Jukka Hassinen
- Department of Applied Physics, School of Science, Aalto University, P. O. Box 16300, FI-00076, Aalto, Espoo, Finland.
| | - Riina Honkanen
- Industrial Water Ltd., Moreenikatu 2 B, FI-04600, Mäntsälä, Finland
| | - Avula Anil Kumar
- DST Unit of Nanoscience (DST UNS) and Thematic Unit of Excellence (TUE), Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036, India
| | - Heli Viskari
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, P. O. Box 16300, FI-00076, Aalto, Espoo, Finland
| | - Anu Kettunen
- Industrial Water Ltd., Moreenikatu 2 B, FI-04600, Mäntsälä, Finland
| | | | - Thalappil Pradeep
- DST Unit of Nanoscience (DST UNS) and Thematic Unit of Excellence (TUE), Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036, India
| | - Orlando J Rojas
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, P. O. Box 16300, FI-00076, Aalto, Espoo, Finland.,Department of Applied Physics, School of Science, Aalto University, P. O. Box 16300, FI-00076, Aalto, Espoo, Finland
| | - Olli Ikkala
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, P. O. Box 16300, FI-00076, Aalto, Espoo, Finland.,Department of Applied Physics, School of Science, Aalto University, P. O. Box 16300, FI-00076, Aalto, Espoo, Finland
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65
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Duval RE, Gouyau J, Lamouroux E. Limitations of Recent Studies Dealing with the Antibacterial Properties of Silver Nanoparticles: Fact and Opinion. NANOMATERIALS (BASEL, SWITZERLAND) 2019; 9:E1775. [PMID: 31847133 PMCID: PMC6956306 DOI: 10.3390/nano9121775] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Revised: 12/07/2019] [Accepted: 12/11/2019] [Indexed: 01/17/2023]
Abstract
Due to the constant increase in the number of infectious diseases and the concomitant lack of treatment available, metallic nanoparticles (e.g., silver nanoparticles) have been of particular interest in the last decades. Indeed, several studies suggest that silver nanoparticles have valuable antimicrobial activities, especially against bacteria, which may lead us to think that these nanoparticles may one day be an attractive therapeutic option for the treatment of bacterial infections. Unfortunately, when we look a little closer to these studies, we can see a very great heterogeneity (e.g., in the study design, in the synthetic process of nanoparticles, in the methods that explore the antibacterial properties of nanoparticles and in the bacteria chosen) making cross-interpretation between these studies impossible, and significantly limiting the interest of silver nanoparticles as promising antibacterial agents. We have selected forty-nine international publications published since 2015, and propose to discuss, not the results obtained, but precisely the different methodologies developed in these publications. Through this discussion, we highlighted the aspects to improve, or at least to homogenize, in order to definitively establish the interest of silver nanoparticles as valuable antibacterial agents.
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Affiliation(s)
- Raphaël E. Duval
- Université de Lorraine, CNRS, L2CM, F-54000 Nancy, France;
- ABC Platform, Faculté de Pharmacie, F-54505 Vandœuvre-lès-Nancy, France
| | - Jimmy Gouyau
- Université de Lorraine, CNRS, L2CM, F-54000 Nancy, France;
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Yan L, Zhao F, Wang J, Zu Y, Gu Z, Zhao Y. A Safe-by-Design Strategy towards Safer Nanomaterials in Nanomedicines. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1805391. [PMID: 30701603 DOI: 10.1002/adma.201805391] [Citation(s) in RCA: 85] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2018] [Revised: 09/13/2018] [Indexed: 05/25/2023]
Abstract
The marriage of nanotechnology and medicine offers new opportunities to fight against human diseases. Benefiting from their unique optical, thermal, magnetic, or redox properties, a wide range of nanomaterials have shown potential in applications such as diagnosis, drug delivery, or tissue repair and regeneration. Despite the considerable success achieved over the past decades, the newly emerging nanomedicines still suffer from an incomplete understanding of their safety risks, and of the relationships between their physicochemical characteristics and safety profiles. Herein, the most important categories of nanomaterials with clinical potential and their toxicological mechanisms are summarized, and then, based on this available information, an overview of the principles in developing safe-by-design nanomaterials for medical applications and of the recent progress in this field is provided. These principles may serve as a starting point to guide the development of more effective safe-by-design strategies and to help identify the major knowledge and skill gaps.
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Affiliation(s)
- Liang Yan
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Nanoscience National Center for Nanoscience and Technology of China, Beijing, 100190, China
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China
| | - Feng Zhao
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Nanoscience National Center for Nanoscience and Technology of China, Beijing, 100190, China
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China
| | - Jing Wang
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Nanoscience National Center for Nanoscience and Technology of China, Beijing, 100190, China
| | - Yan Zu
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Nanoscience National Center for Nanoscience and Technology of China, Beijing, 100190, China
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China
| | - Zhanjun Gu
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Nanoscience National Center for Nanoscience and Technology of China, Beijing, 100190, China
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China
- College of Materials Science and Optoelectronic Technology, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yuliang Zhao
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Nanoscience National Center for Nanoscience and Technology of China, Beijing, 100190, China
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China
- College of Materials Science and Optoelectronic Technology, University of Chinese Academy of Sciences, Beijing, 100049, China
- CAS Center for Excellence in Nanoscience National Center for Nanoscience and Technology of China, Beijing, 100190, China
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68
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Nanodiamond-supported silver nanoparticles as potent and safe antibacterial agents. Sci Rep 2019; 9:13164. [PMID: 31511584 PMCID: PMC6739346 DOI: 10.1038/s41598-019-49675-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Accepted: 08/24/2019] [Indexed: 12/21/2022] Open
Abstract
Since its discovery nearly a century ago, antibiotics has been one of the most effective methods in treating infectious diseases and limiting pathogen spread. However, pathogens often build up antibiotic resistance over time, leading to serious failure of the treatment. Silver nanoparticle (AgNP) is an appealing alternative, but successful treatment of the bacterial infection requires a plentiful supply of AgNP, which can negatively impact human health if people are excessively exposed to the particles. Here, we present a method to overcome this challenge by synthesizing nanodiamond-supported AgNP noncovalently conjugated with albumin molecules to achieve enhanced antibacterial activity and strengthened biocompatibility. Using Escherichia coli as a model bacterium, we found that the albumin-conjugated silver-diamond nanohybrids showed a long-term bactericidal effect after 36 days of the treatment at the AgNP concentration of 250 µg mL−1. Moreover, the toxicity of the nanohybrids to human cells (including human fibroblasts, lung adenocarcinoma epithelial cells, and breast adenocarcinoma cells) is low even at the particle concentration of 500 µg mL−1. The method provides a general and practical solution to the concerns of bacterial resistance against AgNP and issues associated with the size, shape, aggregation, and toxicity of AgNP are largely resolved. Finally, we demonstrate that the nanohybrids can be readily incorporated into natural polysaccharides (such as guar gum) to form three-in-one hydrogels, showing promising applications in nanomedicine.
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69
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Yan X, He B, Liu L, Qu G, Shi J, Hu L, Jiang G. Antibacterial mechanism of silver nanoparticles in Pseudomonas aeruginosa: proteomics approach. Metallomics 2019; 10:557-564. [PMID: 29637212 DOI: 10.1039/c7mt00328e] [Citation(s) in RCA: 138] [Impact Index Per Article: 27.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Silver nanoparticles (AgNPs) are the nanomaterials most widely used as antimicrobial agents in a range of consumer products, due to the environmental release of either the AgNPs themselves or silver ions. Although AgNPs appear to be more potent than silver ions, the mechanism behind the activity is not fully elucidated yet. The most common mechanism of toxicity of AgNPs proposed to date is the release of silver ions and/or the particle-specific functions. In this study, Pseudomonas aeruginosa (a model for Gram-negative bacteria) was treated with AgNPs, and its proteomic response was comprehensively characterized to elucidate the antimicrobial mechanism of AgNPs in the microorganism. In total, 59 silver-regulated proteins (27 up-regulated and 32 down-regulated proteins) and 5 silver-binding proteins were identified. Bioinformatic analysis revealed that interference with the cell-membrane function and generation of intracellular reactive oxygen species (ROS) were the main pathways for the antibacterial effect. The pattern of membrane proteins regulated by AgNPs was similar to that found for silver ions. In addition, the same silver-binding proteins were obtained with both AgNPs and silver ions, which indicated that AgNPs probably affect the cell membrane and react with proteins by releasing silver ions. The elevation of intracellular ROS relative to that with silver ions confirmed oxidative damage caused by AgNPs, which may be ascribed to the nano-characteristics and higher uptake efficiency of the particles. These results demonstrate that the antimicrobial activity of AgNPs is due to the synergistic action of release of dissolved silver ions and particle-specific effects. The proteomic analysis of silver-binding and silver-regulated proteins in the present study provides insight into the mechanism of antimicrobial activity of such nanomaterials.
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Affiliation(s)
- Xueting Yan
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
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70
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Ishida N, Hosokawa Y, Imaeda T, Hatanaka T. Reduction of the Cytotoxicity of Copper (II) Oxide Nanoparticles by Coating with a Surface-Binding Peptide. Appl Biochem Biotechnol 2019; 190:645-659. [PMID: 31422560 DOI: 10.1007/s12010-019-03108-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Accepted: 07/18/2019] [Indexed: 10/26/2022]
Abstract
Copper (II) oxide nanoparticles (CuO-NPs) have been studied as potential antimicrobial agents, similar to silver or platinum nanoparticles. However, the use of excess NPs is limited by their safety and toxicity in beneficial microflora and human cells. In this study, we evaluated the cytotoxicity of CuO-NPs by coating with a novel cyclic peptide, CuO binding peptide 1 (CuBP1), cyclic-SCATPFSPQVCS, which binds to the surface of CuO-NPs. CuBP1 was identified using biopanning of a T7 phage display system and was found to promote the aggregation of CuO-NPs under mild conditions. The treated CuO-NPs with CuBP1 caused the reduction of the cytotoxicity against Escherichia coli, Lactobacillus helveticus, and five other microorganisms, including bacteria and eukaryotes. Similar effects were also demonstrated against human embryonic kidney (HEK293) cells in vitro. Our findings suggested that the CuO-NPs coated with a surface-binding peptide may have applications as a safe antimicrobial agent without excessive cytotoxic activity against beneficial microflora and human cells. Moreover, a similar tendency may be achieved with other metal particles, such as silver or platinum NPs, by using optimal metal binding peptides.
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Affiliation(s)
- Nobuhiro Ishida
- Strategic Research Division, TOYOTA Central R&D Labs, Inc., 41-1, Yokomichi, Nagakute, Aichi, 480-1192, Japan.
| | - Yoichi Hosokawa
- Strategic Research Division, TOYOTA Central R&D Labs, Inc., 41-1, Yokomichi, Nagakute, Aichi, 480-1192, Japan
| | - Takao Imaeda
- Strategic Research Division, TOYOTA Central R&D Labs, Inc., 41-1, Yokomichi, Nagakute, Aichi, 480-1192, Japan
| | - Takaaki Hatanaka
- Strategic Research Division, TOYOTA Central R&D Labs, Inc., 41-1, Yokomichi, Nagakute, Aichi, 480-1192, Japan
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71
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Wang J, Sui M, Ma Z, Li H, Yuan B. Antibacterial performance of polymer quaternary ammonium salt-capped silver nanoparticles on Bacillus subtilis in water. RSC Adv 2019; 9:25667-25676. [PMID: 35530077 PMCID: PMC9070046 DOI: 10.1039/c9ra05944j] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Accepted: 08/08/2019] [Indexed: 12/19/2022] Open
Abstract
In this study, we prepared polymer quaternary ammonium salt–capped silver nanoparticles (PQAS–AgNPs) and investigated their antimicrobial activities. The antimicrobial effectiveness of PQAS–AgNPs on Bacillus subtilis (B. subtilis), and the effect of dose, pH, chloride ion and humic acid (HA) were studied. It was found that PQAS–AgNPs revealed excellent antimicrobial activity to B. subtilis, compared with polyvinylpyrrolidone-capped silver nanoparticles (PVP-AgNPs), which was the reference antimicrobial material. The positive surface, the antimicrobial activity of PQAS, and the synergistic antibacterial effect between PQAS and AgNPs contributed to the significant antibacterial superiority of PQAS–AgNPs. This study demonstrated that the impact of the dose of the material was positive and the microbiocidal efficacy of PQAS–AgNPs was stronger at lower pH. In addition, the antibacterial performance of PQAS–AgNPs decreased in the presence of Cl− and HA. Finally, in combination with the results of FCM and adenosine triphosphate (ATP) content, it was found that PQAS–AgNPs destroyed the respiratory chain of bacterial cells, reduced the synthesis of ATP, and destroyed the cell wall and cell membrane function. Polymer quaternary ammonium salt–capped silver nanoparticles (PQAS–AgNPs) were synthesized, and they exhibited significant antibacterial capacity against Bacillus subtilis.![]()
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Affiliation(s)
- Jingyu Wang
- School of Environmental Science and Engineering, Tongji University 1239 Siping Road Shanghai 200092 People's Republic of China
| | - Minghao Sui
- State Key Laboratory of Pollution Control and Resource Reuse, Shanghai Institute of Pollution Control and Ecological Security, School of Environmental Science and Engineering, Tongji University 1239 Siping Road Shanghai 200092 People's Republic of China +86-21-65986313 +86-21-65982691
| | - Zhanfang Ma
- School of Environmental Science and Engineering, Tongji University 1239 Siping Road Shanghai 200092 People's Republic of China
| | - Hongwei Li
- College of Surveying and Geo-Informatics, Tongji University 1239 Siping Road Shanghai 200092 People's Republic of China
| | - Bojie Yuan
- School of Environmental Science and Engineering, Tongji University 1239 Siping Road Shanghai 200092 People's Republic of China
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72
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Zhang L, Wu L, Mi Y, Si Y. Silver Nanoparticles Induced Cell Apoptosis, Membrane Damage of Azotobacter vinelandii and Nitrosomonas europaea via Generation of Reactive Oxygen Species. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2019; 103:181-186. [PMID: 31049596 DOI: 10.1007/s00128-019-02622-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Accepted: 04/22/2019] [Indexed: 06/09/2023]
Abstract
Silver nanoparticles (AgNPs) is widely used as an antibacterial agent, but the specific antibacterial mechanism is still conflicting. This study aimed to investigate the size dependent inhibition of AgNPs and the relationship between inhibition and reactive oxygen species (ROS). Azotobactervinelandii and Nitrosomonaseuropaea were exposed to AgNPs with different particles size (10 nm and 50 nm). The ROS production was measured and the results showed that the generation of ROS related to the particle size and concentrations of AgNPs. At 10 mg/L of 10 nm Ag particles, the apoptosis rate of A. vinelandii and N. europaea were 20.23% and 1.87% respectively. Additionally, the necrosis rate of A. vinelandii and N. europaea reached to 15.20% and 42.20% respectively. Furthermore, transmission electron microscopy images also indicated that AgNPs caused severely bacterial cell membrane damage. Together these data suggested that the toxicity of AgNPs depends on its particle size and overproduction of ROS.
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Affiliation(s)
- Li Zhang
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei, China
| | - Lingli Wu
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei, China
| | - Yazhu Mi
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei, China
| | - Youbin Si
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei, China.
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Terra ALM, Kosinski RDC, Moreira JB, Costa JAV, Morais MGD. Microalgae biosynthesis of silver nanoparticles for application in the control of agricultural pathogens. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART. B, PESTICIDES, FOOD CONTAMINANTS, AND AGRICULTURAL WASTES 2019; 54:709-716. [PMID: 31230516 DOI: 10.1080/03601234.2019.1631098] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The occurrence of diseases in cultivars has caused significant losses in global food production. The advancement of nanobiotechnology makes it possible to obtain new products to be used in the control of pathogens in cultivars. Silver nanoparticles can be synthesized by microalgae and are widely known for their antimicrobial activity. In addition, the biomass produced in microalgal culture for the biosynthesis of the nanoparticles also demonstrates antimicrobial properties, as it can increase the antibacterial and antifungal potential of the silver nanoparticles. In this context, this article addresses the use of microalgae to biosynthesize silver nanoparticles simultaneously with biomass production. In addition, we demonstrate the antimicrobial potential of these nanomaterials, as well as of the microalgal biomass produced in biosynthesis, to use in the control of pathogens in agriculture.
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Affiliation(s)
- Ana Luiza Machado Terra
- College of Chemistry and Food Engineering, Laboratory of Microbiology and Biochemistry, Federal University of Rio Grande , Rio Grande , Brazil
| | - Roberta da Costa Kosinski
- College of Chemistry and Food Engineering, Laboratory of Microbiology and Biochemistry, Federal University of Rio Grande , Rio Grande , Brazil
| | - Juliana Botelho Moreira
- College of Chemistry and Food Engineering, Laboratory of Microbiology and Biochemistry, Federal University of Rio Grande , Rio Grande , Brazil
| | - Jorge Alberto Vieira Costa
- College of Chemistry and Food Engineering, Laboratory of Biochemical Engineering, Federal University of Rio Grande , Rio Grande , Brazil
| | - Michele Greque de Morais
- College of Chemistry and Food Engineering, Laboratory of Microbiology and Biochemistry, Federal University of Rio Grande , Rio Grande , Brazil
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74
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Hydrophobic silver nanoparticles interacting with phospholipids and stratum corneum mimic membranes in Langmuir monolayers. J Colloid Interface Sci 2019; 543:247-255. [DOI: 10.1016/j.jcis.2019.02.069] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Revised: 02/19/2019] [Accepted: 02/21/2019] [Indexed: 12/16/2022]
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75
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Li X, Fu T, Li B, Yan P, Wu Y. Riboflavin-protected ultrasmall silver nanoclusters with enhanced antibacterial activity and the mechanisms. RSC Adv 2019; 9:13275-13282. [PMID: 35520764 PMCID: PMC9063772 DOI: 10.1039/c9ra02079a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Accepted: 04/18/2019] [Indexed: 11/26/2022] Open
Abstract
Developing silver nanomaterials with efficient antimicrobial properties is of importance for combating bacteria. Here, we report ultrasmall riboflavin-protected silver nanoclusters (RF@AgNCs) that can effectively kill or suppress the growth of Gram-positive S. aureus, Gram-negative E. coli, and fungi C. albicans. Riboflavin (RF) with intrinsic biocompatibility was used as a surface ligand to synthesize silver nanoclusters. TEM revealed that the synthesized RF@AgNCs were ultrasmall (2.4 ± 1.2 nm), spherical and well-dispersed. Antibacterial activity tests showed that RF@AgNCs possessed superior antibacterial efficacy in comparison with RF, AgNPs and mixed RF and AgNPs (RF + AgNPs). The mechanisms of antibacterial activity of RF@AgNCs were studied by fluorescence microscopy-based Live/Dead cell staining assays and ROS measurement. And the results illustrated that the integrity of the bacteria membrane was disrupted and intracellular high level ROS generation was induced by RF@AgNCs. The cytotoxic activities were also assessed and RF@AgNCs were found to be non-toxic to human red blood cells and mammalian cells. With the highly efficient antibacterial activity and acceptable biocompatibility, RF@AgNCs hold great promise in biomedical applications as well as in water sterilization and the textile industry.
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Affiliation(s)
- Xizhe Li
- Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University 710049 Xi'an PR China
| | - Tao Fu
- Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University 710049 Xi'an PR China
| | - Bingyu Li
- Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University 710049 Xi'an PR China
| | - Peng Yan
- Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University 710049 Xi'an PR China
| | - Yayan Wu
- Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University 710049 Xi'an PR China
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Pan Y, Yang P, Moloney MG, Wang L, Ma F, Wang Y. Ag NP-Loaded Cotton Fiber Materials: Preparation, Surface Deposition, and Antibacterial Activity with Different Chemical Structures. ACS APPLIED BIO MATERIALS 2018; 2:510-517. [DOI: 10.1021/acsabm.8b00696] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Yunlin Pan
- School of Chemistry and Pharmaceutical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, PR China
| | - Pengfei Yang
- School of Chemistry and Pharmaceutical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, PR China
| | - Mark G. Moloney
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Oxford OX1 3TA, U.K
| | - Liang Wang
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, PR China
| | - Feng Ma
- School of Chemistry and Pharmaceutical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, PR China
| | - Yongqing Wang
- School of Chemistry and Pharmaceutical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, PR China
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Zhang L, Wu L, Si Y, Shu K. Size-dependent cytotoxicity of silver nanoparticles to Azotobacter vinelandii: Growth inhibition, cell injury, oxidative stress and internalization. PLoS One 2018; 13:e0209020. [PMID: 30566461 PMCID: PMC6300289 DOI: 10.1371/journal.pone.0209020] [Citation(s) in RCA: 78] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Accepted: 11/28/2018] [Indexed: 01/09/2023] Open
Abstract
The influence of nanomaterials on the ecological environment is becoming an increasingly hot research field, and many researchers are exploring the mechanisms of nanomaterial toxicity on microorganisms. Herein, we studied the effect of two different sizes of nanosilver (10 nm and 50 nm) on the soil nitrogen fixation by the model bacteria Azotobacter vinelandii. Smaller size AgNPs correlated with higher toxicity, which was evident from reduced cell numbers. Flow cytometry analysis further confirmed this finding, which was carried out with the same concentration of 10 mg/L for 12 h, the apoptotic rates were20.23% and 3.14% for 10 nm and 50 nm AgNPs, respectively. Structural damage to cells were obvious under scanning electron microscopy. Nitrogenase activity and gene expression assays revealed that AgNPs could inhibit the nitrogen fixation of A. vinelandii. The presence of AgNPs caused intracellular reactive oxygen species (ROS) production and electron spin resonance further demonstrated that AgNPs generated hydroxyl radicals, and that AgNPs could cause oxidative damage to bacteria. A combination of Ag content distribution assays and transmission electron microscopy indicated that AgNPs were internalized in A. vinelandii cells. Overall, this study suggested that the toxicity of AgNPs was size and concentration dependent, and the mechanism of antibacterial effects was determined to involve damage to cell membranes and production of reactive oxygen species leading to enzyme inactivation, gene down-regulation and death by apoptosis.
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Affiliation(s)
- Li Zhang
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei, China
| | - Lingli Wu
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei, China
| | - Youbin Si
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei, China
- * E-mail:
| | - Kunhui Shu
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei, China
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78
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Mousavi-Khattat M, Keyhanfar M, Razmjou A. A comparative study of stability, antioxidant, DNA cleavage and antibacterial activities of green and chemically synthesized silver nanoparticles. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2018; 46:S1022-S1031. [PMID: 30449178 DOI: 10.1080/21691401.2018.1527346] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Silver nanoparticles have a wide range of research, industrial and biomedical applications that make it essential to develop a low cost and eco-friendly approach with scaling up potential. Green synthesis of nanoparticles through bio-reactions leads to a reduction of silver ions to particles could be an acceptable selection using no additional reducing chemicals. Moreover, the simplicity of scale-up processes of the method makes it more efficient than chemical and physical synthesis methods. In this study, Datura stramonium leaf extract and sodium citrate were used as biological and chemical reducing and stabilizing agents to make silver nanoparticles. The main goal is to comprise properties and evaluate antibacterial activity of nanoparticles synthesized through two approaches. Size and morphology compared between the two types of the synthesized nanoparticle by UV-Visible spectroscopy, DLS, AFM, TEM and their antibacterial effects were evaluated through growth inhibition MIC and MBC methods. The results showed narrow size range, spherical shape, high anti-oxidant, antibacterial and DNA cleavage activities of green synthesized silver nanoparticles comparing to less average size, wider range of nanoparticle size, no anti-oxidant activity and less antibacterial and DNA cleavage activities of chemically synthesized nanoparticles. The green synthesized silver nanoparticles had more desirable characteristics and biological activities compared to chemically synthesized nanoparticles. For instance, the green nanoparticles showed narrow size range, spherical shape, high anti-oxidant, antibacterial and DNA cleavage activities versus the chemically synthesized which had less average size, higher range of nanoparticles size, no anti-oxidant activity and less antibacterial and DNA cleavage activities.
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Affiliation(s)
| | - Mehrnaz Keyhanfar
- a Department of Biotechnology , University of Isfahan , Isfahan , Iran
| | - Amir Razmjou
- a Department of Biotechnology , University of Isfahan , Isfahan , Iran
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79
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Bhargava A, Pareek V, Roy Choudhury S, Panwar J, Karmakar S. Superior Bactericidal Efficacy of Fucose-Functionalized Silver Nanoparticles against Pseudomonas aeruginosa PAO1 and Prevention of Its Colonization on Urinary Catheters. ACS APPLIED MATERIALS & INTERFACES 2018; 10:29325-29337. [PMID: 30096228 DOI: 10.1021/acsami.8b09475] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Pseudomonas aeruginosa, a Gram-negative rod-shaped bacterium is a notorious pathogen causing chronic infections. Its ability to form antibiotic-resistant biofilm has raised the need for the development of alternative treatment approaches. An ideal alternate can be silver nanoparticles known for their strong yet tunable bactericidal activity. However, their use in commercial in vivo medicine could not see the light of the day because of the unwanted toxicity of silver in the host cells at higher concentrations. Thus, strategies which can modulate the bacterial cell-silver nanoparticle interactions thereby reducing the amount of nanoparticles required to kill a typical number of bacterial cells are utmost welcomed. The current work showcases one such strategy by functionalizing the silver nanoparticles with l-fucose to increase their interactions with the LecB lectins present on P. aeruginosa PAO1. The advantage of this approach lies in the higher bactericidal and antibiofilm activity of fucose-functionalized silver nanoparticles (FNPs) as compared to the citrate-capped silver nanoparticles (CNPs) of similar size and concentrations. The superior bactericidal potential of FNPs as demonstrated by fluorescence-assisted cell sorting, confocal laser scanning microscopy, and transmission electron microscopy analyses may be attributed to the higher reactive oxygen species generation and oxidative membrane damage. Additionally, FNPs prevented the formation of biofilms by downregulating the expression of various virulence genes at lower concentrations as compared to CNPs. The practical applicability of the approach was demonstrated by preventing bacterial colonization on artificial silicone rubber surfaces. These results can be extrapolated in the treatment of catheter-associated urinary tract infections caused by P. aeruginosa. In conclusion, the present work strongly advocates the use of antivirulence targets and their corresponding binding residues for the augmentation of the bactericidal effect of silver nanoparticles.
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Affiliation(s)
- Arpit Bhargava
- Institute of Nano Science and Technology , Habitat Centre, Phase-10 , Mohali 160062 , Punjab , India
| | - Vikram Pareek
- Department of Biological Sciences , Birla Institute of Technology and Science , Pilani 333031 , Rajasthan , India
| | - Subhasree Roy Choudhury
- Institute of Nano Science and Technology , Habitat Centre, Phase-10 , Mohali 160062 , Punjab , India
| | - Jitendra Panwar
- Department of Biological Sciences , Birla Institute of Technology and Science , Pilani 333031 , Rajasthan , India
| | - Surajit Karmakar
- Institute of Nano Science and Technology , Habitat Centre, Phase-10 , Mohali 160062 , Punjab , India
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80
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Peiris MMK, Fernando SSN, Jayaweera PM, Arachchi NDH, Guansekara TDCP. Comparison of Antimicrobial Properties of Silver Nanoparticles Synthesized from Selected Bacteria. Indian J Microbiol 2018; 58:301-311. [PMID: 30013274 PMCID: PMC6023817 DOI: 10.1007/s12088-018-0723-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Accepted: 03/30/2018] [Indexed: 10/17/2022] Open
Abstract
Green silver nanoparticle (AgNP) biosynthesis is facilitated by the enzyme mediated reduction of Ag ions by plants, fungi and bacteria. The antimicrobial activity of green AgNPs is useful to overcome the challenge of antimicrobial resistance. Antimicrobial properties of biosynthesized AgNPs depend on multiple factors including culture conditions and the microbial source. The antimicrobial activity of AgNPs biosynthesized by Pseudomonas aeruginosa ATCC 27853, Escherichia coli ATCC 25922, Staphylococcus aureus ATCC 25923 and Acinetobacter baumannii (confirmed clinical isolate) were investigated in this study. Biosynthesis conditions (AgNO3 concentration, pH, incubation temperature and incubation time) were optimized to obtain the maximum AgNP yield. Presence of AgNPs was confirmed by observing a characteristic UV-Visible absorbance peak in 420-435 nm range. AgNP biosynthesis was optimal at 0.4 g/L AgNO3 concentration under alkaline conditions at 60-70 °C. The biosynthesized AgNPs showed higher stability compared to chemogenized AgNPs in the presence of electrolytes. AgNPs synthesized by P. aeruginosa were the most stable while NPs of S. aureus were the least stable. AgNPs synthesized by P. aeruginosa and S. aureus showed good antimicrobial potential against E. coli, P. aeruginosa, S. aureus, MRSA and Candida albicans. AgNPs synthesized by S. aureus had greater antimicrobial activity. The antimicrobial activity of NPs may vary depending on the size and the morphology of NPs.
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Affiliation(s)
- M. M. K. Peiris
- Department of Microbiology, Faculty of Medical Sciences, University of Sri Jayewardenepura, Nugegoda, Sri Lanka
| | - S. S. N. Fernando
- Department of Microbiology, Faculty of Medical Sciences, University of Sri Jayewardenepura, Nugegoda, Sri Lanka
| | - P. M. Jayaweera
- Department of Chemistry, Faculty of Applied Sciences, University of Sri Jayewardenepura, Nugegoda, Sri Lanka
| | - N. D. H. Arachchi
- Department of Chemistry, Faculty of Applied Sciences, University of Sri Jayewardenepura, Nugegoda, Sri Lanka
| | - T. D. C. P. Guansekara
- Department of Microbiology, Faculty of Medical Sciences, University of Sri Jayewardenepura, Nugegoda, Sri Lanka
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81
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Saharudin KA, Sreekantan S, Basiron N, Khor YL, Harun NH, S M N Mydin RB, Md Akil H, Seeni A, Vignesh K. Bacteriostatic Activity of LLDPE Nanocomposite Embedded with Sol⁻Gel Synthesized TiO₂/ZnO Coupled Oxides at Various Ratios. Polymers (Basel) 2018; 10:E878. [PMID: 30960803 PMCID: PMC6403739 DOI: 10.3390/polym10080878] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Revised: 07/31/2018] [Accepted: 08/01/2018] [Indexed: 02/05/2023] Open
Abstract
Metal oxide-polymer nanocomposite has been proven to have selective bactericidal effects against the main and common pathogens (Gram-positive Staphylococcus aureus (S. aureus) and Gram-negative Escherichia coli (E. coli)) that can cause harmful infectious diseases. As such, this study looked into the prospect of using TiO₂/ZnO with linear low-density polyethylene (LLDPE) to inactivate S. aureus and E. coli. The physical, structural, chemical, mechanical, and antibacterial properties of the nanocomposite were investigated in detail in this paper. The production of reactive species, such as hydroxyl radicals (•OH), holes (h⁺), superoxide anion radicals (O₂•¯), and zinc ion (Zn2+), released from the nanocomposite were quantified to elucidate the underlying antibacterial mechanisms. LLDPE/25T75Z with TiO₂/ZnO (1:3) nanocomposite displayed the best performance that inactivated S. aureus and E. coli by 95% and 100%, respectively. The dominant reactive active species and the zinc ion release toward the superior antibacterial effect of nanocomposite are discussed. This work does not only offer depiction of the effective element required for antimicrobial biomedical appliances, but also the essential structural characteristics to enhance water uptake to expedite photocatalytic activity of LLDPE/metal oxide nanocomposite for long term application.
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Affiliation(s)
- Khairul Arifah Saharudin
- School of Materials & Mineral Resources Engineering, Engineering Campus, Universiti Sains Malaysia, Nibong Tebal, Pulau Pinang 14300, Malaysia.
| | - Srimala Sreekantan
- School of Materials & Mineral Resources Engineering, Engineering Campus, Universiti Sains Malaysia, Nibong Tebal, Pulau Pinang 14300, Malaysia.
| | - Norfatehah Basiron
- School of Materials & Mineral Resources Engineering, Engineering Campus, Universiti Sains Malaysia, Nibong Tebal, Pulau Pinang 14300, Malaysia.
| | - Yong Ling Khor
- School of Materials & Mineral Resources Engineering, Engineering Campus, Universiti Sains Malaysia, Nibong Tebal, Pulau Pinang 14300, Malaysia.
| | - Nor Hazliana Harun
- Advanced Medical and Dental Institute, Universiti Sains Malaysia, Bertam, Pulau Pinang 13200, Malaysia.
| | | | - Hazizan Md Akil
- School of Materials & Mineral Resources Engineering, Engineering Campus, Universiti Sains Malaysia, Nibong Tebal, Pulau Pinang 14300, Malaysia.
| | - Azman Seeni
- Malaysian Institute of Pharmaceuticals and Nutraceuticals (IPHARM), National Institute of Biotechnology Malaysia, Ministry of Science, Technology and Innovation, Bukit Gambir, Gelugor, Pulau Pinang 11700, Malaysia.
| | - Kumaravel Vignesh
- Department of Environmental Science, School of Science, Institute of Technology Sligo, Ash Lane, F91 YW50 Sligo, Ireland.
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82
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Tang S, Zheng J. Antibacterial Activity of Silver Nanoparticles: Structural Effects. Adv Healthc Mater 2018; 7:e1701503. [PMID: 29808627 DOI: 10.1002/adhm.201701503] [Citation(s) in RCA: 494] [Impact Index Per Article: 82.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2017] [Revised: 03/26/2018] [Indexed: 12/30/2022]
Abstract
The increase of antibiotic resistance in bacteria has become a major concern for successful diagnosis and treatment of infectious diseases. Over the past few decades, significant progress has been achieved on the development of nanotechnology-based medicines for combating multidrug resistance in microorganisms. Among this, silver nanoparticles (AgNPs) hold great promise in addressing this challenge due to their broad-spectrum and robust antimicrobial properties. This review illustrates the antibacterial mechanisms of silver nanoparticles and further elucidates how different structural factors including surface chemistry, size, and shape, impact their antibacterial activities, which are expected to promote the future development of more potent silver nanoparticle-based antibacterial agents.
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Affiliation(s)
- Shaoheng Tang
- Department of Chemistry and Biochemistry; The University of Texas at Dallas; 800 W. Campbell Rd. Richardson TX 75080 USA
| | - Jie Zheng
- Department of Chemistry and Biochemistry; The University of Texas at Dallas; 800 W. Campbell Rd. Richardson TX 75080 USA
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83
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Qing Y, Cheng L, Li R, Liu G, Zhang Y, Tang X, Wang J, Liu H, Qin Y. Potential antibacterial mechanism of silver nanoparticles and the optimization of orthopedic implants by advanced modification technologies. Int J Nanomedicine 2018; 13:3311-3327. [PMID: 29892194 PMCID: PMC5993028 DOI: 10.2147/ijn.s165125] [Citation(s) in RCA: 434] [Impact Index Per Article: 72.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Infection, as a common postoperative complication of orthopedic surgery, is the main reason leading to implant failure. Silver nanoparticles (AgNPs) are considered as a promising antibacterial agent and always used to modify orthopedic implants to prevent infection. To optimize the implants in a reasonable manner, it is critical for us to know the specific antibacterial mechanism, which is still unclear. In this review, we analyzed the potential antibacterial mechanisms of AgNPs, and the influences of AgNPs on osteogenic-related cells, including cellular adhesion, proliferation, and differentiation, were also discussed. In addition, methods to enhance biocompatibility of AgNPs as well as advanced implants modifications technologies were also summarized.
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Affiliation(s)
- Yun’an Qing
- Orthopaedic Medical Center, The Second Hospital of Jilin University, Changchun 130041, People’s Republic of China
| | - Lin Cheng
- Department of Obstetrics and Gynecology, The Second Hospital of Jilin University, Changchun 130041, People’s Republic of China
| | - Ruiyan Li
- Orthopaedic Medical Center, The Second Hospital of Jilin University, Changchun 130041, People’s Republic of China
| | - Guancong Liu
- Orthopaedic Medical Center, The Second Hospital of Jilin University, Changchun 130041, People’s Republic of China
| | - Yanbo Zhang
- Orthopaedic Medical Center, The Second Hospital of Jilin University, Changchun 130041, People’s Republic of China
| | - Xiongfeng Tang
- Orthopaedic Medical Center, The Second Hospital of Jilin University, Changchun 130041, People’s Republic of China
| | - Jincheng Wang
- Orthopaedic Medical Center, The Second Hospital of Jilin University, Changchun 130041, People’s Republic of China
| | - He Liu
- Orthopaedic Medical Center, The Second Hospital of Jilin University, Changchun 130041, People’s Republic of China
| | - Yanguo Qin
- Orthopaedic Medical Center, The Second Hospital of Jilin University, Changchun 130041, People’s Republic of China
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84
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Dorati R, DeTrizio A, Modena T, Conti B, Benazzo F, Gastaldi G, Genta I. Biodegradable Scaffolds for Bone Regeneration Combined with Drug-Delivery Systems in Osteomyelitis Therapy. Pharmaceuticals (Basel) 2017; 10:E96. [PMID: 29231857 PMCID: PMC5748651 DOI: 10.3390/ph10040096] [Citation(s) in RCA: 76] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2017] [Revised: 11/27/2017] [Accepted: 11/29/2017] [Indexed: 12/31/2022] Open
Abstract
A great deal of research is ongoing in the area of tissue engineering (TE) for bone regeneration. A possible improvement in restoring damaged tissues involves the loading of drugs such as proteins, genes, growth factors, antibiotics, and anti-inflammatory drugs into scaffolds for tissue regeneration. This mini-review is focused on the combination of the local delivery of antibiotic agents with bone regenerative therapy for the treatment of a severe bone infection such as osteomyelitis. The review includes a brief explanation of scaffolds for bone regeneration including scaffolds characteristics and types, a focus on severe bone infections (especially osteomyelitis and its treatment), and a literature review of local antibiotic delivery by the combination of scaffolds and drug-delivery systems. Some examples related to published studies on gentamicin sulfate-loaded drug-delivery systems combined with scaffolds are discussed, and future perspectives are highlighted.
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Affiliation(s)
- Rossella Dorati
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy.
- Center of Health Technology, University of Pavia, Via Ferrata 1, 27100 Pavia, Italy.
| | - Antonella DeTrizio
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy.
| | - Tiziana Modena
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy.
- Center of Health Technology, University of Pavia, Via Ferrata 1, 27100 Pavia, Italy.
| | - Bice Conti
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy.
- Center of Health Technology, University of Pavia, Via Ferrata 1, 27100 Pavia, Italy.
| | - Francesco Benazzo
- Center of Health Technology, University of Pavia, Via Ferrata 1, 27100 Pavia, Italy.
- Centre oh Health Technology (CHT), Via Ferrata 1, University of Pavia, 27100 Pavia, Italy.
| | - Giulia Gastaldi
- Centre oh Health Technology (CHT), Via Ferrata 1, University of Pavia, 27100 Pavia, Italy.
- Department of Molecular Medicine, University of Pavia, Viale Taramelli 2, 27100 Pavia, Italy.
| | - Ida Genta
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy.
- Center of Health Technology, University of Pavia, Via Ferrata 1, 27100 Pavia, Italy.
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