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Wang M, Yu DG, Williams GR, Bligh SWA. Co-Loading of Inorganic Nanoparticles and Natural Oil in the Electrospun Janus Nanofibers for a Synergetic Antibacterial Effect. Pharmaceutics 2022; 14:1208. [PMID: 35745781 PMCID: PMC9228218 DOI: 10.3390/pharmaceutics14061208] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 05/25/2022] [Accepted: 06/02/2022] [Indexed: 12/02/2022] Open
Abstract
Side-by-side electrospinning is a powerful but challenging technology that can be used to prepare Janus nanofibers for various applications. In this work, cellulose acetate (CA) and polycaprolactone (PCL) were used as polymer carriers for silver nanoparticles (Ag NPs) and lavender oil (LO), respectively, processing these into two-compartment Janus fibers. A bespoke spinneret was used to facilitate the process and prevent the separation of the working fluids. The process of side-by-side electrospinning was recorded with a digital camera, and the morphology and internal structure of the products were characterized by electron microscopy. Clear two-compartment fibers are seen. X-ray diffraction patterns demonstrate silver nanoparticles have been successfully loaded on the CA side, and infrared spectroscopy indicates LO is dispersed on the PCL side. Wetting ability and antibacterial properties of the fibers suggested that PCL-LO//CA-Ag NPs formulation had strong antibacterial activity, performing better than fibers containing only one active component. The PCL-LO//CA-Ag NPs had a 20.08 ± 0.63 mm inhibition zone for E. coli and 19.75 ± 0.96 mm for S. aureus. All the fibers had water contact angels all around 120°, and hence, have suitable hydrophobicity to prevent water ingress into a wound site. Overall, the materials prepared in this work have considerable promise for wound healing applications.
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Affiliation(s)
- Menglong Wang
- School of Health Sciences, Caritas Institute of Higher Education, Hong Kong 999077, China;
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Deng-Guang Yu
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China
| | | | - Sim Wan Annie Bligh
- School of Health Sciences, Caritas Institute of Higher Education, Hong Kong 999077, China;
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52
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Shabatina T, Vernaya O, Shumilkin A, Semenov A, Melnikov M. Nanoparticles of Bioactive Metals/Metal Oxides and Their Nanocomposites with Antibacterial Drugs for Biomedical Applications. MATERIALS (BASEL, SWITZERLAND) 2022; 15:3602. [PMID: 35629629 PMCID: PMC9147160 DOI: 10.3390/ma15103602] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 05/15/2022] [Accepted: 05/16/2022] [Indexed: 02/04/2023]
Abstract
The increasing appearance of new strains of microorganisms resistant to the action of existing antibiotics is a modern problem that requires urgent decision. A promising potential solution is the use of nanoparticles of bioactive metals and their oxides as new antibacterial agents, since they are capable of affecting pathogenic microorganisms by mechanisms different from the mechanisms of action of antibiotics. Inorganic nanoparticles possess a wide spectrum of antibacterial activity. These particles can be easily conjugated with drug molecules and become carriers in targeted drug-delivery systems. This paper discusses the benefits and prospects of the application of nanoparticles from metals and metal oxides and their nanocomposites with antibacterial drugs.
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Affiliation(s)
- Tatyana Shabatina
- Department of Chemistry, M.V. Lomonosov Moscow State University, Moscow 119991, Russia; (O.V.); (A.S.); (A.S.); (M.M.)
- Department of Natural Sciences, N.E. Bauman Moscow State Technical University, Moscow 105005, Russia
| | - Olga Vernaya
- Department of Chemistry, M.V. Lomonosov Moscow State University, Moscow 119991, Russia; (O.V.); (A.S.); (A.S.); (M.M.)
| | - Aleksei Shumilkin
- Department of Chemistry, M.V. Lomonosov Moscow State University, Moscow 119991, Russia; (O.V.); (A.S.); (A.S.); (M.M.)
| | - Alexander Semenov
- Department of Chemistry, M.V. Lomonosov Moscow State University, Moscow 119991, Russia; (O.V.); (A.S.); (A.S.); (M.M.)
- Department of Biology, M.V. Lomonosov Moscow State University, Moscow 119991, Russia
| | - Mikhail Melnikov
- Department of Chemistry, M.V. Lomonosov Moscow State University, Moscow 119991, Russia; (O.V.); (A.S.); (A.S.); (M.M.)
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53
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Facile Green Synthesis of Silver Nanoparticles Using Aqueous Leaf Extract of Origanum majorana with Potential Bioactivity against Multidrug Resistant Bacterial Strains. CRYSTALS 2022. [DOI: 10.3390/cryst12050603] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The high prevalence of nosocomial bacterial resistance contributes to significant mortality and morbidity around the world; thus, finding novel antibacterial agents is of vital concern. Accordingly, the present study attempted to synthesize silver nanoparticles (AgNPs) using a green approach. Aqueous leaf extract of Origanum majorana was used to synthesize AgNPs and the antibacterial efficiency against multidrug resistant bacterial strains was detected. Characterization of the biogenic AgNPs was performed using ultraviolet-visible spectrophotometry (UV-Vis), transmission electron microscopy (TEM), energy dispersive X-ray spectroscopy (EDX), Fourier transform infrared spectroscopy (FT-IR) analysis, and X-ray diffraction analysis (XRD). The disc diffusion method was used to detect the antibacterial activity of AgNPs against three nosocomial multidrug-resistant strains. Preliminary UV-Vis analysis revealed the biosynthesis of AgNPs due to peak formation at 374 nm, corresponding to the surface plasmon resonance (SPR) of biogenic AgNPs. TEM micrographs detected the synthesis of small AgNPs with an average particle size of 26.63 nm. EDX analysis revealed the presence of the following elements: oxygen (3.69%), carbon (2.93%), aluminum (1.29), silicon (2.83%), chloride (17.89%), and silver (71.37%). Furthermore, XRD analysis revealed the presence of diffraction peaks at 2 theta (θ) degrees of 38.18°, 44.36°, 64.35°, and 77.54°, assigned to the planes of silver crystals (111), (200), (220), and (311), respectively. Collectively, these findings affirm the synthesis of biogenic AgNPs with potential physicochemical characteristics. The antimicrobial efficiency of the biogenic AgNPs indicated that Klebsiella pneumoniae strain was the most susceptible strain at concentrations of 50 and 100 µg/disk, with inhibitory zones of 21.57 and 24.56 mm, respectively. The minimum inhibitory concentration (MIC) of AgNPs against Klebsiella pneumoniae strain was found to be 10 µg/mL, while the minimum bactericidal concentration (MBC) was found to be 20 µg/mL. In conclusion, aqueous leaf extract of O. majorana mediated synthesis of small sized AgNPs, with potential antimicrobial effectiveness against multidrug-resistant bacterial pathogens.
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54
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Tang L, Tong D, Zhang Y, Wang J, Sun H. A simple judgment method for joint action of antibacterial agents on bacterial resistance. MethodsX 2022; 9:101700. [PMID: 35518915 PMCID: PMC9062344 DOI: 10.1016/j.mex.2022.101700] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Accepted: 04/07/2022] [Indexed: 12/12/2022] Open
Abstract
The severe pollution of bacterial resistance induced by the wide and even indiscriminate use of antibacterial agents has posed serious threats to human health and ecological safety. Furthermore, the combined effects of antibacterial agents have a closer relationship with the pollution of bacterial resistance than single antibacterial agent. However, there is little information regarding how multiple antibacterial agents interplay to induce bacterial resistance. Here, we developed a simple judgment method with five basic procedures for the joint action of antibacterial agents on bacterial resistance, involving toxicity determination, mutation frequency determination, conjugative transfer frequency determination, dose-response relationship fitting, key parameters obtaining, and joint resistance action judgment. This proposed approach was validated through investigating the joint resistance action between silver nanoparticle (AgNP) and 1-pyrrolidino-1-cyclohexene (1P1C, a kind of quorum sensing inhibitors). According to the procedures, the mutation unit and conjugative transfer unit for the AgNP-1P1C mixture were calculated to be 64.27 and 5.10, respectively, indicating the antagonism for their joint resistance action. This method can not only benefit the mechanistic explanation for how mixed antibacterial agents stimulate the bacterial resistance, but also guide the environmental risk assessment and clinical use of combined antibacterial agents in the related fields. • We present a novel method to judge the joint resistance action of antibacterial agents, taking the emergence and dissemination of antibiotic resistance genes into account. • Toxicity determination can help to design the mixtures of antibacterial agents and confirm the appropriate test concentration range of antibacterial agents used in mutation frequency and conjugative transfer frequency determination. • The mutation unit and conjugative transfer unit were proposed according to the toxic unit in the judgment of joint toxic action.
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Affiliation(s)
- Liang Tang
- Key Laboratory of Organic Compound Pollution Control Engineering (MOE), School of Environmental and Chemical Engineering, Shanghai University, 333 Nanchen Road, Shanghai 200444, China
| | - Danqing Tong
- Key Laboratory of Organic Compound Pollution Control Engineering (MOE), School of Environmental and Chemical Engineering, Shanghai University, 333 Nanchen Road, Shanghai 200444, China
| | - Yulian Zhang
- Key Laboratory of Organic Compound Pollution Control Engineering (MOE), School of Environmental and Chemical Engineering, Shanghai University, 333 Nanchen Road, Shanghai 200444, China
| | - Jiajun Wang
- Key Laboratory of Organic Compound Pollution Control Engineering (MOE), School of Environmental and Chemical Engineering, Shanghai University, 333 Nanchen Road, Shanghai 200444, China
| | - Haoyu Sun
- Key Laboratory of Organic Compound Pollution Control Engineering (MOE), School of Environmental and Chemical Engineering, Shanghai University, 333 Nanchen Road, Shanghai 200444, China
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55
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Adawy A, Diaz R. Probing the Structure, Cytocompatibility, and Antimicrobial Efficacy of Silver-, Strontium-, and Zinc-Doped Monetite. ACS APPLIED BIO MATERIALS 2022; 5:1648-1657. [PMID: 35324139 PMCID: PMC9019811 DOI: 10.1021/acsabm.2c00047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Accepted: 03/08/2022] [Indexed: 11/28/2022]
Abstract
Calcium phosphate phases are among the most widely accepted compounds for biomaterial applications, of which the resorbable phases have gained particular attention in recent years. Brushite and its anhydrous form monetite are among the most interesting resorbable calcium phosphate phases that can be applied as cements and for in situ fabrication of three-dimensional (3D) implants. Of these two dicalcium phosphate compounds, monetite is more stable and undergoes slower degradation than brushite. The purpose of the current study is to synthesize and dope monetite with the antimicrobial elements silver and zinc and the osteoinductive element strontium and investigate the possible structural variations as well as their biocompatibility and antimicrobial effectiveness. For this, powder X-ray diffraction (PXRD), energy-dispersive X-ray spectroscopy (EDX), scanning electron microscopy (SEM), and cryo-transmission electron microscopy (cryo-TEM) were used to thoroughly study the synthesized structures. Moreover, the ASTM E-2149-01 protocol and a cell proliferation assay were used to determine the minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) and the cytocompatibility of the different phases with the Soas-2 cell line, respectively. The results confirm the successful synthesis and doping procedures, such that zinc was the most incorporated element into the monetite phase and strontium was the least incorporated element. The microbiological studies revealed that silver is a very effective antimicrobial agent at low concentrations but unsuitable at high concentrations because its cytotoxicity would prevail. On the other hand, doping the compounds with zinc led to a reasonable antimicrobial activity without compromising the biocompatibility to obviously high concentrations. The study also highlights that strontium, widely known for its osteoinductivity, bears an antimicrobial effect at high concentrations. The generated doped compounds could be beneficial for prospective studies as bone cements or for scaffold biomaterial applications.
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Affiliation(s)
- Alaa Adawy
- Unit
of Electron Microscopy and Nanotechnology, Institute for Scientific
and Technological Resources (SCTs), University
of Oviedo, 33006 Oviedo, Asturias, Spain
| | - Raquel Diaz
- Nanomaterials
and Nanotechnology Research Centre—CINN (CSIC), 33940 El Entrego, Spain
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56
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Cytotoxic Activity and Antibiofilm Efficacy of Biosynthesized Silver Nanoparticles against Methicillin-Resistant Staphylococcus aureus Strains Colonizing Cell Phones. THE CANADIAN JOURNAL OF INFECTIOUS DISEASES & MEDICAL MICROBIOLOGY = JOURNAL CANADIEN DES MALADIES INFECTIEUSES ET DE LA MICROBIOLOGIE MEDICALE 2022; 2022:9410024. [PMID: 35368519 PMCID: PMC8975669 DOI: 10.1155/2022/9410024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/16/2021] [Revised: 01/27/2022] [Accepted: 03/03/2022] [Indexed: 11/20/2022]
Abstract
The interest for green synthesis of metallic nanoparticles (NPs) has acquired particular attention due to its low toxicity and economic feasibility compared with chemical or physical process. Here we carried out an extracellular synthesis approach of silver nanoparticles (AgNPs) using dried orange peel extract. Characterization studies revealed the synthesis of 25–30 nm AgNPs with distinct morphology as observed in transmission electron microscopes. Dynamic light scattering spectroscopy and Fourier transform infrared spectroscopy analyses further characterized nanoparticles confirming their stability and the presence of functional groups. The biological properties of biosynthesized AgNPs were subsequently investigated. Our results revealed anticancer activity of biogenic silver NPs against the B16 melanoma cell line with an IC50 value of 25 µg/ml. Additionally, the developed AgNPs displayed a considerable antagonistic activity against methicillin-resistant Staphylococcus aureus (MRSA) strains colonizing cell phones, with inhibition zones between 12 and 14 mm and minimum inhibitory concentration values between 1.56 and 12.5 µg/ml. Furthermore, the AgNPs exhibited potent antibiofilm activity against MRSA strains with the percent biofilm disruption reaching 80%. Our results highlighted the efficacy of biosynthesized AgNPs against bacterial biofilms and pointed to the exploration of orange peels as a natural and cost-effective strategy.
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57
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Teixeira Bezerra T, Oliveira de Almeida M, Maria de Amorim Lima N, Lúcia de Castro Rodrigues N, Gomes Pereira Ribeiro V, Jania Teixeira M, Carbone L, Mele G, Lomonaco D, Elaine Mazzetto S. In vitro antileishmanial activity of sustainable anacardic acid and cardol based silver nanoparticles on L. braziliensis. Int J Pharm 2022; 619:121698. [PMID: 35337904 DOI: 10.1016/j.ijpharm.2022.121698] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Revised: 03/10/2022] [Accepted: 03/19/2022] [Indexed: 01/31/2023]
Abstract
The search for effective and less toxic drugs for the treatment of Cutaneous Leishmaniasis (CL) is desirable due to the emergence of resistant parasites. The present study shows the preparation, characterization and in vitro antileishmanial activity of green-based silver nanoparticles (AgNPs) with Cashew Nutshell Liquid (CNSL, main constituents: anacardic acid (AA) and cardol (CD). The synthesis of silver nanoparticles was achieved by reduction with sodium borohydride in the presence of anacardic acid or cardol under microwave irradiation (400 W, 60 °C, 5 min) resulting in AgAA and AgCD. In vitro assay showed opposite effects for AgAA and AgCD. While AgAA is highly toxic to macrophages (CC50 = 6.910 µg mL-1) and almost non-toxic for L.braziliensis (IC50 = 86.61 µg mL-1), AgCD results very selective toward killing the parasite (CC50 = 195.0 µg mL-1, IC50 = 11.54 µg mL-1). AA's higher polarity and conical shape easily promote cell lysis by increasing cell permeability, while CD has a protective effect: for that reason, AA and AgAA were not further used for tests. CD (EC50 = 2.906 µg mL-1) had higher ability to kill intracellular amastigotes than AgCD (EC50 = 16.00 µg mL-1), however, less intact cells were seen on isolated CD tests. In addition, considering that NO is one of the critical molecular species for the intracellular control of Leishmania, we used Griess colorimetric test to analyze the effect of treatment with AgCD and CD. Overall, the in vitro antileishmanial tests indicate that AgCD should be further explored as a promising non-toxic treatment for CL.
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Affiliation(s)
- Thayllan Teixeira Bezerra
- Laboratório de Produtos e Tecnologia em Processos (LPT), Departamento de Química Orgânica e Inorgânica (DQOI), Universidade Federal do Ceará (UFC), Campus do Pici, Fortaleza, Ceará 60455-900, Brazil.
| | - Mayara Oliveira de Almeida
- Laboratório de Produtos e Tecnologia em Processos (LPT), Departamento de Química Orgânica e Inorgânica (DQOI), Universidade Federal do Ceará (UFC), Campus do Pici, Fortaleza, Ceará 60455-900, Brazil
| | - Nayane Maria de Amorim Lima
- Laboratório de Produtos e Tecnologia em Processos (LPT), Departamento de Química Orgânica e Inorgânica (DQOI), Universidade Federal do Ceará (UFC), Campus do Pici, Fortaleza, Ceará 60455-900, Brazil
| | - Naya Lúcia de Castro Rodrigues
- Laboratório de Parasitologia, Departamento de Patologia e Medicina Legal, Universidade Federal do Ceará, Campus do Porangabuçu, Fortaleza, Ceará 60441-750, Brazil
| | - Viviane Gomes Pereira Ribeiro
- Instituto de Ciências Exatas e da Natureza (ICEN), Universidade da Integração Internacional da Lusofonia Afro-Brasileira (UNILAB), Redenção, Ceará 62790-000, Brazil
| | - Maria Jania Teixeira
- Laboratório de Parasitologia, Departamento de Patologia e Medicina Legal, Universidade Federal do Ceará, Campus do Porangabuçu, Fortaleza, Ceará 60441-750, Brazil
| | - Luigi Carbone
- CNR NANOTEC-Institute of Nanotechnology c/o Campus Ecotekne, University of Salento, via Monteroni, 73100 Lecce, Italy
| | - Giuseppe Mele
- Department of Engineering for Innovation, University of Salento, via Arnesano, 73100 Lecce, Italy
| | - Diego Lomonaco
- Laboratório de Produtos e Tecnologia em Processos (LPT), Departamento de Química Orgânica e Inorgânica (DQOI), Universidade Federal do Ceará (UFC), Campus do Pici, Fortaleza, Ceará 60455-900, Brazil
| | - Selma Elaine Mazzetto
- Laboratório de Produtos e Tecnologia em Processos (LPT), Departamento de Química Orgânica e Inorgânica (DQOI), Universidade Federal do Ceará (UFC), Campus do Pici, Fortaleza, Ceará 60455-900, Brazil
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Copper Oxide Nanoparticle-Decorated Carbon Nanoparticle Composite Colloidal Preparation through Laser Ablation for Antimicrobial and Antiproliferative Actions against Breast Cancer Cell Line, MCF-7. BIOMED RESEARCH INTERNATIONAL 2022; 2022:9863616. [PMID: 35299896 PMCID: PMC8923787 DOI: 10.1155/2022/9863616] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Revised: 12/12/2021] [Accepted: 02/11/2022] [Indexed: 11/17/2022]
Abstract
Copper oxide (CuO) nanoparticle- (NP-) decorated carbon NPs (CNPs) were produced as colloidal suspension through pulsed laser ablation technique in liquid (PLAL) medium. The antimicrobial activity of the produced NPs was tested against Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli), and anticancer activity was tested against breast cancer cell line, MCF-7, together with the biocompatibility assessment of these NPs. The X-ray diffraction (XRD) patterns of the obtained CNPs showed peaks at 26.58° and 43.78° (2θ) identical to (002) and (111) planes, respectively, of the carbon phases. It also displayed new peaks at 38.5° and 48.64° (2θ) after doping with CuO NPs. Transmission electron microscope (TEM) images revealed the crystalline nature with the spherical shape of the prepared CNPs with 5-40 nm diameter ranges. In addition, the NP effects on the bacterial cell walls and nucleic acid were confirmed using a scanning electron microscope (SEM) and microscopic fluorescence analysis. The NPs showed antibacterial activity through SEM examinations against the pathogenic microbial species, S. aureus and E. coli. In the cellular material release assay, the optical density of the bacterial cells, treated with NPs, displayed a significant increase with the time of exposure to NPs, and the cytotoxicity reached more than 80% of the level for the CNPs decorated with CuO NPs. The morphology of the MCF-7 cells treated with NPs decreased numbers, and the loss of contact with the surrounding cells was observed. These results confirmed that the CNPs decorated with CuO NPs have no observable side effects and can be safely used for therapeutic applications. It is also noteworthy that it is the first report of preparation of CuO NPs decorated with CNPs (CuO NPs-CNPs) by PLAL, and the produced NPs showed antimicrobial antiproliferative activities against breast cancer cell lines, MCF-7. The main advantage of the PLAL technique of synthesizing CuO NPs-CNPs provided a two-step, cost-effective, and eco-friendly method.
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59
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Green Synthesis of Silver Nanoparticles Using Ocimum basilicum L. and Hibiscus sabdariffa L. Extracts and Their Antibacterial Activity in Combination with Phage ZCSE6 and Sensing Properties. J Inorg Organomet Polym Mater 2022. [DOI: 10.1007/s10904-022-02234-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
AbstractOne of the dangerous pathogens that display high resistance to antibiotics is Salmonella enterica (S. enterica), which infects humans and animals. In this study, a new approach was proposed to fight antibiotic-resistant bacteria by using silver nanoparticles (AgNPs) with adding the phage ZCSE6. The biosynthesized AgNPs were characterized by analysis of spectroscopy profile of the UV–Vis, visualize the morphology, and size with transmission electron microscopy. Both minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) were assessed. In addition, the AgNPs were able to control the biofilm formation of S. enterica, also, heavy metals detection by AgNPs and their application in milk. UV–Vis spectra showed a surface resonance peak of 400 and 430 nm corresponding to the formation of AgNPs capping with Ocimum basilicum L. and Hibiscus sabdariffa L., respectively. The MIC and MBC values were 6.25 µg/ml to inhibit the growth of S. enterica and 12.5 µg/ml from killing the bacteria and it was decreased to 1.5 µg/ml when combined with the phage. In the present study, AgNPs were combined with phage ZCSE6 to obtain a synergetic antimicrobial activity. Moreover, it increases the milk’s shelf-life and senses the Cd2+ at a concentration of 1 mM in the water.
Graphical Abstract
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60
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Zhang X, Dang D, Zheng L, Wu L, Wu Y, Li H, Yu Y. Effect of Ag Nanoparticles on Denitrification and Microbial Community in a Paddy Soil. Front Microbiol 2022; 12:785439. [PMID: 35003016 PMCID: PMC8727482 DOI: 10.3389/fmicb.2021.785439] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Accepted: 11/23/2021] [Indexed: 11/30/2022] Open
Abstract
The extensive application of Ag nanoparticles (AgNPs) in industry, agriculture, and food processing areas increases the possibility of its release and accumulation to agroecosystem, but the effects of AgNPs to denitrification and the microbial community in paddy ecosystems are still poorly studied. In this study, microcosmic simulation experiments were established to investigate the response of soil denitrification to different levels of AgNPs (i.e., 0.1, 1, 10, and 50 mg/kg) in a paddy soil. Real-time quantitative PCR and high-throughput sequencing were conducted to reveal the microbial mechanism of the nanometer effect. The results showed that, though 0.1–10 mg/kg AgNPs had no significant effects on denitrification rate and N2O emission rate compared to CK and bulk Ag treatments, 50 mg/kg AgNPs significantly stimulated more than 60% increase of denitrification rate and N2O emission rate on the 3rd day (P < 0.05). Real-time quantitative PCR revealed that 50 mg/kg AgNPs significantly decreased the abundance of 16S bacterial rRNA gene, nirS/nirK, cnorB, and nosZ genes, but it did not change the narG gene abundance. The correlation analysis further revealed that the cumulative N2O emission was positively correlated with the ratio of all the five tested denitrifying genes to bacterial 16S rRNA gene (P < 0.05), indicating that the tolerance of narG gene to AgNPs was the key factor of the increase in denitrification in the studied soil. High-throughput sequencing showed that only the 50-mg/kg-AgNP treatment significantly changed the microbial community composition compared to bulk Ag and CK treatments. The response of microbial phylotypes to AgNPs suggested that the most critical bacteria which drove the stimulation of 50 mg/kg AgNPs on N2O emission were Firmicutes and β-proteobacteria, such as Clotridiales, Burkholderiales, and Anaerolineales. This study revealed the effects of AgNPs to denitrification in a paddy ecosystem and could provide a scientific basis for understanding of the environmental and toxicological effects of Ag nanomaterials.
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Affiliation(s)
- Xiao Zhang
- Key Laboratory of Agrometeorology of Jiangsu Province, Nanjing University of Information Science and Technology, Nanjing, China
| | - Di Dang
- Key Laboratory of Agrometeorology of Jiangsu Province, Nanjing University of Information Science and Technology, Nanjing, China
| | - Lingsi Zheng
- Key Laboratory of Agrometeorology of Jiangsu Province, Nanjing University of Information Science and Technology, Nanjing, China
| | - Lingyu Wu
- Key Laboratory of Agrometeorology of Jiangsu Province, Nanjing University of Information Science and Technology, Nanjing, China
| | - Yu Wu
- Key Laboratory of Agrometeorology of Jiangsu Province, Nanjing University of Information Science and Technology, Nanjing, China
| | - Haoruo Li
- Key Laboratory of Agrometeorology of Jiangsu Province, Nanjing University of Information Science and Technology, Nanjing, China
| | - Yongjie Yu
- Key Laboratory of Agrometeorology of Jiangsu Province, Nanjing University of Information Science and Technology, Nanjing, China.,Key Laboratory of Karst Dynamics, MNR and Guangxi, Institute of Karst Geology, Chinese Academy of Geological Sciences, Guilin, China
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61
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Hyun J, Chang R. Penetration of
C
60
into lung surfactant membranes: Molecular dynamics simulation studies. B KOREAN CHEM SOC 2022. [DOI: 10.1002/bkcs.12475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Jiyeon Hyun
- Department of Physics University of Seoul Seoul South Korea
| | - Rakwoo Chang
- Department of Applied Chemistry University of Seoul Seoul South Korea
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62
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Huang S, Liu M, Li H. In situ green synthesis of lysozyme/silver nanoparticles sol and their antimicrobial properties. NEW J CHEM 2022. [DOI: 10.1039/d2nj01744j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Lysozyme/silver nanoparticles sol (LZM/AgNPs) were synthesized in situ with the assistance of ultraviolet irradiation with enhanced antibacterial activity.
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Affiliation(s)
- Shan Huang
- State Key Lab of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
| | - Mengru Liu
- State Key Lab of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
| | - Hailong Li
- State Key Lab of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
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63
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Vieira TO, Ricci-Junior E, de Barros AODS, Rebelo Alencar LM, Ferreira MRS, de Jesus Andreoli Pinto T, Santos-Oliveira R, de Holanda Saboya Souza D. Tertiary Nanosystem Composed of Graphene Quantum Dots, Levofloxacin and Silver Nitrate for Microbiological Control. RECENT ADVANCES IN DRUG DELIVERY AND FORMULATION 2022; 16:234-240. [PMID: 35850654 DOI: 10.2174/2667387816666220715121107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Revised: 05/23/2022] [Accepted: 05/25/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND Infectious diseases have the highest mortality rate in the world and these numbers are associated with scarce and/or ineffective diagnosis and bacterial resistance. Currently, with the development of new pharmaceutical formulations, nanotechnology is gaining prominence. METHODS Nanomicelles were produced by ultrasonication. The particle size and shape were evaluated by scanning electron microscopy and confirmed by dynamic light scattering, also thermogravimetric analysis was performed to evaluate the thermal stability. Finally, antibacterial activity has been performed. RESULTS The results showed that a rod-shaped nanosystem, with 316.1 nm and PDI of 0.243 was formed. The nanosystem was efficient against Staphylococcus aureus, Pseudomonas aeruginosa, and Bacillus subtilis subsp. spizizenii with MIC inferior to 0.98 and a synergistic effect between silver graphene quantum dots and levofloxacin was observed. CONCLUSION The nanosystem produced may rise as a promising agent against the bacterial threat, especially regarding bacterial resistance.
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Affiliation(s)
- Thamires Oliveira Vieira
- Brazilian Nuclear Energy Commission, Nuclear Engineering Institute, Laboratory of Nanoradiopharmacy and Synthesis of New Radiopharmaceuticals, Rio de Janeiro 21941906, Brazil
| | - Eduardo Ricci-Junior
- Federal University of Rio de Janeiro, College of Pharmacy, Galenical Development Laboratory, Rio de Janeiro 21941900, Brazil
| | - Aline Oiveira da Silva de Barros
- Brazilian Nuclear Energy Commission, Nuclear Engineering Institute, Laboratory of Nanoradiopharmacy and Synthesis of New Radiopharmaceuticals, Rio de Janeiro 21941906, Brazil
| | | | - Marcia Regina Spuri Ferreira
- Department of Pharmacy, Faculty of Pharmaceutical Sciences, University of São Paulo, São Paulo 05508-000, Brazil
| | | | - Ralph Santos-Oliveira
- Brazilian Nuclear Energy Commission, Nuclear Engineering Institute, Laboratory of Nanoradiopharmacy and Synthesis of New Radiopharmaceuticals, Rio de Janeiro 21941906, Brazil
- Zona Oeste State University, Laboratory of Nanoradiopharmaceuticals, Rio de Janeiro 23070200, Brazil
| | - Diego de Holanda Saboya Souza
- Institute of Macromolecules Professor Eloísa Mano (IMA), Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro 21941900, Brazil
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Pandey M, Wasnik K, Gupta S, Singh M, Patra S, Gupta P, Pareek D, Maity S, Tilak R, Paik P. Targeted specific inhibition of bacterial and Candida species by mesoporous Ag/Sn-SnO 2 composite nanoparticles: in silico and in vitro investigation. RSC Adv 2021; 12:1105-1120. [PMID: 35425144 PMCID: PMC8978812 DOI: 10.1039/d1ra07594b] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Accepted: 12/15/2021] [Indexed: 02/06/2023] Open
Abstract
Invasive bacterial and fungal infections have notably increased the burden on the health care system and especially in immune compromised patients. These invasive bacterial and fungal species mimic and interact with the host extracellular matrix and increase the adhesion and internalization into the host system. Further, increased resistance of traditional antibiotics/antifungal drugs led to the demand for other therapeutics and preventive measures. Presently, metallic nanoparticles have wide applications in health care sectors. The present study has been designed to evaluate the advantage of Ag/Sn-SnO2 composite nanoparticles over the single oxide/metallic nanoparticles. By using in silico molecular docking approaches, herein we have evaluated the effects of Ag/Sn-SnO2 nanoparticles on adhesion and invasion responsible molecular targets such as LpfD (E. coli), Als3 (C. albicans) and on virulence/resistance causing PqsR (P. aeruginosa), RstA (Bmfr) (A. baumannii), FoxA (K. pneumonia), Hsp90 and Cyp51 (C. albicans). These Ag/Sn-SnO2 nanoparticles exhibited higher antimicrobial activities, especially against the C. albicans, which are the highest ever reported results. Further, Ag/Sn-SnO2 NPs exhibited interaction with the heme proionate residues such as Lys143, His468, Tyr132, Arg381, Phe105, Gly465, Gly464, Ile471 and Ile304 by forming hydrogen bonds with the Arg 381 residue of lanosterol 1 4α-demethylase and increased the inhibition of the Candida strains. Additionally, the Ag/Sn-SnO2 nanoparticles exhibited extraordinary inhibitory properties by targeting different proteins of bacteria and Candida species followed by several molecular pathways which indicated that it can be used to eliminate the resistance to traditional antibiotics.
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Affiliation(s)
- Monica Pandey
- School of Engineering Sciences and Technology, University of Hyderabad Telangana 500046 India
| | - Kirti Wasnik
- School of Biomedical Engineering, Indian Institute of Technology, Banaras Hindu University (BHU) Varanasi Uttar Pradesh 221005 India
| | - Shubhra Gupta
- School of Biomedical Engineering, Indian Institute of Technology, Banaras Hindu University (BHU) Varanasi Uttar Pradesh 221005 India
| | - Monika Singh
- School of Biomedical Engineering, Indian Institute of Technology, Banaras Hindu University (BHU) Varanasi Uttar Pradesh 221005 India
| | - Sukanya Patra
- School of Biomedical Engineering, Indian Institute of Technology, Banaras Hindu University (BHU) Varanasi Uttar Pradesh 221005 India
| | - Premshankar Gupta
- School of Biomedical Engineering, Indian Institute of Technology, Banaras Hindu University (BHU) Varanasi Uttar Pradesh 221005 India
| | - Divya Pareek
- School of Biomedical Engineering, Indian Institute of Technology, Banaras Hindu University (BHU) Varanasi Uttar Pradesh 221005 India
| | - Somedutta Maity
- School of Engineering Sciences and Technology, University of Hyderabad Telangana 500046 India
| | - Ragini Tilak
- Institute of Medical Sciences, Banaras Hindu University (BHU) Varanasi Uttar Pradesh 221005 India
| | - Pradip Paik
- School of Biomedical Engineering, Indian Institute of Technology, Banaras Hindu University (BHU) Varanasi Uttar Pradesh 221005 India
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65
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Xu X, Zheng J, He Y, Lin K, Li S, Zhang Y, Song P, Zhou Y, Chen X. Nanocarriers for Inner Ear Disease Therapy. Front Cell Neurosci 2021; 15:791573. [PMID: 34924960 PMCID: PMC8677824 DOI: 10.3389/fncel.2021.791573] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Accepted: 10/28/2021] [Indexed: 12/12/2022] Open
Abstract
Hearing loss is a common disease due to sensory loss caused by the diseases in the inner ear. The development of delivery systems for inner ear disease therapy is important to achieve high efficiency and reduce side effects. Currently, traditional drug delivery systems exhibit the potential to be used for inner ear disease therapy, but there are still some drawbacks. As nanotechnology is developing these years, one of the solutions is to develop nanoparticle-based delivery systems for inner ear disease therapy. Various nanoparticles, such as soft material and inorganic-based nanoparticles, have been designed, tested, and showed controlled delivery of drugs, improved targeting property to specific cells, and reduced systemic side effects. In this review, we summarized recent progress in nanocarriers for inner ear disease therapy. This review provides useful information on developing promising nanocarriers for the efficient treatment of inner ear diseases and for further clinical applications for inner ear disease therapy.
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Affiliation(s)
- Xiaoxiang Xu
- Department of Otorhinolaryngology-Head and Neck Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China.,Department of Otorhinolaryngology, Dawu County People's Hospital, Xiaogan, China
| | - Jianwei Zheng
- Department of Biliary Pancreatic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yanze He
- Department of Otorhinolaryngology, Dawu County People's Hospital, Xiaogan, China
| | - Kun Lin
- Department of Otorhinolaryngology-Head and Neck Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Shuang Li
- Department of Otorhinolaryngology-Head and Neck Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Ya Zhang
- Department of Otorhinolaryngology-Head and Neck Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Peng Song
- Department of Otorhinolaryngology-Head and Neck Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Yuye Zhou
- Division of Applied Physical Chemistry, Analytical Chemistry, Department of Chemistry, School of Engineering Sciences in Chemistry, Biotechnology and Health, Kungliga Tekniska Högskolan (KTH) Royal Institute of Technology, Stockholm, Sweden.,Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, China
| | - Xiong Chen
- Department of Otorhinolaryngology-Head and Neck Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
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Ahmad T, Mahbood F, Sarwar R, Iqbal A, Khan M, Muhammad S, Al-Riyami K, Hussain N, Uddin J, Khan A, Al-Harrasi A. Synthesis of gemifloxacin conjugated silver nanoparticles, their amplified bacterial efficacy against human pathogen and their morphological study via TEM analysis. ARTIFICIAL CELLS, NANOMEDICINE, AND BIOTECHNOLOGY 2021; 49:661-671. [PMID: 34818127 DOI: 10.1080/21691401.2021.2003805] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 10/21/2021] [Accepted: 11/01/2021] [Indexed: 06/13/2023]
Abstract
Drug-loaded nanoparticles (NPs) allow specific accumulation and controlled release of drugs to infected tissues with minimal cytotoxicity. In this study, gemifloxacin conjugated silver nanoparticles (Gemi-AgNPs) were synthesized, and the amplification of their antibacterial potential against the human pathogen as well as their stability was monitored under physiological conditions. Fourier transform infrared spectroscopy (FTIR) analysis demonstrated the interaction between -NH2 and -OH functional moiety and the metal surface. The morphological analyses via transmission electron microscopy revealed that Gemi-AgNPs has a round oval shape and average particle size of 22.23 ± 2 nm. The antibacterial and antibiofilm activities of these NPS showed that Gemi-AgNPs exhibit excellent antimicrobial and biofilm inhibition activity against human pathogens, namely, Proteus mirabilis (P. mirabilis) and methicillin-resistant Staphylococcus aureus (MRSA). A significant increase in the antibiofilm activity of Gemi-AgNPs was confirmed by crystal violet, 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) staining, and microscopic analysis. Gemi-AgNPs exhibited the ability to inhibit urease with an IC50 value of 57.4 ± 0.72 µg/mL. The changes in the bacterial cell morphology were analyzed via TEM, which revealed that cell membranes disrupted and completely destroyed the cell morphology by the treatment of Gemi-AgNPs.
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Affiliation(s)
- Touqeer Ahmad
- Natural and Medical Sciences Research Center, University of Nizwa, Nizwa, Oman
| | - Fazal Mahbood
- Institute of Chemical Sciences, University of Swat, KP, Pakistan
| | - Rizwana Sarwar
- Department of Chemistry, COMSATS University Islamabad Abbottabad Campus, Abbottabad, Pakistan
| | - Ayesha Iqbal
- Division of Pharmacy Practice and Policy, School of Pharmacy, University of Nottingham, Nottingham, UK
| | - Majid Khan
- Natural and Medical Sciences Research Center, University of Nizwa, Nizwa, Oman
- International Center for Chemical and Biological Sciences, H.E.J. Research Institute of Chemistry, University of Karachi, Karachi, Pakistan
| | - Sayyar Muhammad
- Department of Chemistry, Islamia College, Peshawar, Pakistan
| | - Khamis Al-Riyami
- Natural and Medical Sciences Research Center, University of Nizwa, Nizwa, Oman
| | - Nusrat Hussain
- Department of Chemistry, University of Baltistan Skardu, Skardu, Pakistan
| | - Jalal Uddin
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Khalid University, Abha, Saudi Arabia
| | - Ajmal Khan
- Natural and Medical Sciences Research Center, University of Nizwa, Nizwa, Oman
| | - Ahmed Al-Harrasi
- Natural and Medical Sciences Research Center, University of Nizwa, Nizwa, Oman
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Unglaube F, Lammers A, Kreyenschulte CR, Lalk M, Mejía E. Preparation, Characterization and Antimicrobial Properties of Nanosized Silver-Containing Carbon/Silica Composites from Rice Husk Waste. ChemistryOpen 2021; 10:1244-1250. [PMID: 34904386 PMCID: PMC8668417 DOI: 10.1002/open.202100239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 11/24/2021] [Indexed: 01/09/2023] Open
Abstract
Rice husk, one of the main side products in the rice production, and its sustainable management represent a challenge in many countries. Herein, we describe the use of this abundant agricultural bio-waste as feedstock for the preparation of silver-containing carbon/silica nano composites with antimicrobial properties. The synthesis was performed using a fast and cheap methodology consisting of wet impregnation followed by pyrolysis, yielding C/SiO2 composite materials doped with varying amounts of silver from 28 to 0.001 wt %. The materials were fully characterized and their antimicrobial activity against ESKAPE pathogens, namely E. faecium, S. aureus, K. pneumoniae, A. baumannii, P. aeruginosa, and E. coli, and the pathogenic yeast C. albicans was investigated. Sensitivities of these strains against the prepared materials were demonstrated, even with exceptional low amounts of 0.015 m% silver. Hence, we report a straightforward method for the synthesis of antimicrobial agents from abundant sources which addresses urgent questions like bio-waste valorization and affordable alternatives to increasingly fewer effective antibiotics.
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Affiliation(s)
- Felix Unglaube
- Leibniz-Institut für Katalyse e.V. (LIKAT)18059RostockGermany
| | | | | | - Michael Lalk
- Institut für BiochemieUniversität Greifswald17489GreifswaldGermany
| | - Esteban Mejía
- Leibniz-Institut für Katalyse e.V. (LIKAT)18059RostockGermany
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Muthusamy N, Kanniah P, Vijayakumar P, Murugan U, Raj DS, Sankaran U. Green-Inspired Fabrication of Silver Nanoparticles and Examine its Potential In-Vitro Cytotoxic and Antibacterial Activities. J Inorg Organomet Polym Mater 2021. [DOI: 10.1007/s10904-021-02082-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Evaluation of Antibacterial Effects of Matrix-Induced Silver Ions against Antibiotic-Resistant ESKAPE Pathogens. Pharmaceuticals (Basel) 2021; 14:ph14111094. [PMID: 34832878 PMCID: PMC8621581 DOI: 10.3390/ph14111094] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 10/23/2021] [Accepted: 10/25/2021] [Indexed: 12/15/2022] Open
Abstract
Recently, drug-resistant bacterial infections, especially ESKAPE pathogens (Enterococcus faecium, Staphylococcus aureus, Klebsiella pneumoniae, Acinetobacter baumannii, Pseudomonas aeruginosa, and Enterobacter spp.), have become a critical health issue worldwide, highlighting the emerging need for novel antibacterial agents. In this study, silver nanoparticles were extracted from silver-containing mesoporous bioactive glass (MBG-Ag) using four different matrixes, including water, phosphate buffer saline (PBS), tryptic soy broth (TSB), and taurine (Tau). The inductively coupled plasma-mass spectrometer (ICP-MS) results demonstrated that the silver concentration of Tau-Ag was the highest among the four matrixes. The Tau-Ag was also observed to have 87.35% silver ions in its X-ray photoelectron spectrometer (XPS) spectra. The micrograph of transmission electron microscope (TEM) displayed a uniform distribution of silver nanoparticles, which was confined in a smaller size compared to that in TSB-Ag. Moreover, the peak shifts observed in the Fourier-transform infrared spectrometer (FTIR) spectrum implied that the -SO32− and -NH groups in taurine may interact with silver. A low cytotoxicity was noted for Tau-Ag, with approximately 70% of cells surviving at 0.63 mg/mL. Compared to the other three matrix-induced silver agents, Tau-Ag represented a better antibacterial effect against methicillin-resistant Staphylococcus aureus, with a minimum inhibitory concentration (MIC) value of 0.63 mg/mL and a postponed growth of 0.31 mg/mL observed. Further antibacterial examinations illustrated the presence of remarkable antibacterial activities against vancomycin-resistant Enterococcus feacium, carbapenem-resistant Klebsiella pneumoniae, carbapenem-resistant Acinetobacter baumannii, and carbapenem-resistant Pseudomonas aeruginosa. Given our observations and multiple bioactive functions of taurine (prevent patients from inflammation and oxidative-stress injuries), we anticipate that taurine matrix-induced silver ions would be a biomedical material with a high potential for combatting drug-resistant ESKAPE pathogens.
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Golubeva OY, Ulyanova NY, Vladimirova EV, Shamova OV. Comparison of the Antimicrobial and Hemolytic Activities of Various Forms of Silver (Ions, Nanoparticles, Bioconjugates) Stabilized in a Zeolite Matrix. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:12356-12364. [PMID: 34643405 DOI: 10.1021/acs.langmuir.1c01899] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
A quantitative and qualitative comparison of the antimicrobial and hemolytic activities of silver in various states, in the form of ions, nanoparticles, and bioconjugates with the antimicrobial protein lysozyme stabilized in an inert zeolite matrix, has been carried out. A synthetic zeolite with a β structure was chosen as a zeolite matrix. Using the ion-exchange method, the method of chemical reduction, and treating the matrix with a silver hydrosol with specified characteristics, samples of zeolites with the same silver content in various forms (Ag+, Ag° - Ag°/Lyz) in the amounts of 0.8 and 5 wt % have been synthesized. The samples obtained were studied by a complex of physicochemical research methods: X-ray diffraction, UV absorption spectroscopy, low-temperature nitrogen adsorption, electron microscopy, and atomic absorption. Antimicrobial activity was assessed against antibiotic-resistant Gram-negative microbe (e.g., Escherichia coli ML-35, Pseudomonas aeruginosa 522/17 MDR, Klebsiella pneumoniae ESBL 344) and Gram-positive microbe (e.g., Staphylococcus aureus 1399/17). The hemolytic activity in relation to human erythrocytes was estimated. The results obtained showed significant antimicrobial activity with a simultaneously high hemolytic activity of ionic silver. Silver nanoparticles have a lower level of antimicrobial activity and toxicity. Bioconjugates of silver nanoparticles and lysozyme showed an optimal combination of antimicrobial properties and lack of hemolytic activity.
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Affiliation(s)
- Olga Yu Golubeva
- Institute of Silicate Chemistry, Russian Academy of Sciences, Adm. Makarova Emb., 2, St. Petersburg 199034, Russia
| | - Natalia Yu Ulyanova
- Institute of Silicate Chemistry, Russian Academy of Sciences, Adm. Makarova Emb., 2, St. Petersburg 199034, Russia
| | | | - Olga V Shamova
- Institute of Experimental Medicine, Academic Pavlov Str. 12, St. Petersburg 197376, Russia
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71
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Shen H, Liu Y, Liu Y, Duan Z, Wu P, Lin Z, Sun H. Hormetic dose-responses for silver antibacterial compounds, quorum sensing inhibitors, and their binary mixtures on bacterial resistance of Escherichia coli. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 786:147464. [PMID: 33965827 DOI: 10.1016/j.scitotenv.2021.147464] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 04/25/2021] [Accepted: 04/27/2021] [Indexed: 06/12/2023]
Abstract
Silver antibacterial compounds (SACs) and quorum sensing inhibitors (QSIs), as the potential antibiotic substitutes, have been recommended to prevent and treat microbial infections for the purpose of controlling the increasingly serious bacterial resistance induced by the abuse of antibiotics. However, there is little information regarding the resistance risk of these compounds, especially their mixtures. In this study, bacterial mutation and RP4 plasmid conjugative transfer among bacteria were used to characterize the bacterial endogenous and exogenous resistance, respectively. The effects of SACs (including silver nitrate (AgNO3) and silver nanoparticle (AgNP)), QSIs, and their binary mixtures on the bacterial resistance were investigated via setting the frequency of mutation and conjugative transfer in Escherichia coli (E. coli) as the test endpoints. The results indicated that these two endpoints exhibited hormetic dose-responses to each treatment. Furthermore, the joint resistance actions between SACs and QSIs were all judged to be antagonism. Correlation analysis suggested that the promotion of the bacterial resistance in each treatment was closely related to its toxicity. It was speculated that AgNO3 and AgNP might both release Ag+ ions to facilitate the E. coli resistance, while QSIs probably acted on LsrR and SdiA proteins to stimulate the bacterial mutation and accelerate the RP4 plasmid conjugative transfer, respectively. These findings imply that the bacteria may generate targeted stress response to the survival pressure from environmental compounds, displaying hormetic phenomenon in resistance-related test endpoints. This study provides a new insight into the resistance risk induced by SACs and QSIs, benefiting the environmental risk assessment of these compounds from the perspective of bacterial resistance.
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Affiliation(s)
- Hongyan Shen
- School of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China
| | - Yingying Liu
- State Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing Normal University, Beijing 100875, China
| | - Yinan Liu
- School of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China
| | - Zemeng Duan
- School of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China
| | - Pengpeng Wu
- Huaxin College of Hebei Geo University, Shijiazhuang 050700, China
| | - Zhifen Lin
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China; Shanghai Key Lab of Chemical Assessment and Sustainability, Shanghai, China
| | - Haoyu Sun
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China; Shanghai Key Lab of Chemical Assessment and Sustainability, Shanghai, China; Post-doctoral Research Station, College of Civil Engineering, Tongji University, Shanghai 200092, China.
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Lesnichaya M, Gazizova A, Perfileva A, Nozhkina O, Graskova I, Sukhov B. Starch-capped sulphur nanoparticles synthesised from bulk powder sulphur and their anti-phytopathogenic activity against Clavibacter sepedonicus. IET Nanobiotechnol 2021; 15:585-593. [PMID: 34695298 PMCID: PMC8675777 DOI: 10.1049/nbt2.12044] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 01/15/2021] [Accepted: 01/19/2021] [Indexed: 11/20/2022] Open
Abstract
Water-soluble, stable nanoparticles of elemental sulphur with a size of 9-52 nm have been synthesised using the stabilising potential of starch. Sulphide anions were used as sulphur precursors that were generated earlier from the bulk powder sulphur in the base-reduction system NaOH-N2 H4 ·H2 O followed by their oxidation with molecular oxygen to element sulphur atoms. Using a set of modern spectral and microscopic methods (XRD, optical spectroscopy, DLS, TEM), the phase state, elemental composition of the nanocomposites and their nanomorphological characteristics have been investigated. It was found that nanocomposites are formed as sulphur particles with the shape which is nearly spherical dispersed in the polysaccharide starch matrix with a pronounced tendency to cluster into ring formations. Water solubility and stability of the obtained nanoparticles is ensured by sorption of starch macromolecules on the surface of sulphur nanoparticles, with the thickness of the stabilising shell in a range of 10-171 nm. In vitro experiments were carried out to study the anti-microbial activity of the obtained sulphur nanocomposite (1.6% S) using the propidium iodide fluorescent dye staining method and the diffusion method. It showed that the water solution of the starch-capped sulphur nanoparticles at the concentration of 6.25 µg/ml had a pronounced anti-phytopathogenic activity against the potato ring rot pathogen Clavibacter michiganensis subsp. sepedonicus.
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Affiliation(s)
- Marina Lesnichaya
- A. E. Favorsky Irkutsk Institute of ChemistrySiberian BranchRussian Academy of SciencesIrkutskRussia
| | - Anastasiya Gazizova
- Siberian Institute of Plant Physiology and BiochemistrySiberian BranchRussian Academy of SciencesIrkutskRussia
| | - Alla Perfileva
- Siberian Institute of Plant Physiology and BiochemistrySiberian BranchRussian Academy of SciencesIrkutskRussia
| | - Olga Nozhkina
- Siberian Institute of Plant Physiology and BiochemistrySiberian BranchRussian Academy of SciencesIrkutskRussia
| | - Irina Graskova
- Siberian Institute of Plant Physiology and BiochemistrySiberian BranchRussian Academy of SciencesIrkutskRussia
| | - Boris Sukhov
- A. E. Favorsky Irkutsk Institute of ChemistrySiberian BranchRussian Academy of SciencesIrkutskRussia
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A Review on Silver Nanoparticles: Classification, Various Methods of Synthesis, and Their Potential Roles in Biomedical Applications and Water Treatment. WATER 2021. [DOI: 10.3390/w13162216] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Recent developments in nanoscience have appreciably modified how diseases are prevented, diagnosed, and treated. Metal nanoparticles, specifically silver nanoparticles (AgNPs), are widely used in bioscience. From time to time, various synthetic methods for the synthesis of AgNPs are reported, i.e., physical, chemical, and photochemical ones. However, among these, most are expensive and not eco-friendly. The physicochemical parameters such as temperature, use of a dispersing agent, surfactant, and others greatly influence the quality and quantity of the synthesized NPs and ultimately affect the material’s properties. Scientists worldwide are trying to synthesize NPs and are devising methods that are easy to apply, eco-friendly, and economical. Among such strategies is the biogenic method, where plants are used as the source of reducing and capping agents. In this review, we intend to debate different strategies of AgNP synthesis. Although, different preparation strategies are in use to synthesize AgNPs such as electron irradiation, optical device ablation, chemical reduction, organic procedures, and photochemical methods. However, biogenic processes are preferably used, as they are environment-friendly and economical. The review covers a comprehensive discussion on the biological activities of AgNPs, such as antimicrobial, anticancer anti-inflammatory, and anti-angiogenic potentials of AgNPs. The use of AgNPs in water treatment and disinfection has also been discussed in detail.
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Júnior DM, Hausen MA, Asami J, Higa AM, Leite FL, Mambrini GP, Rossi AL, Komatsu D, Duek EADR. A New Dermal Substitute Containing Polyvinyl Alcohol with Silver Nanoparticles and Collagen with Hyaluronic Acid: In Vitro and In Vivo Approaches. Antibiotics (Basel) 2021; 10:antibiotics10060742. [PMID: 34205394 PMCID: PMC8235042 DOI: 10.3390/antibiotics10060742] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 06/16/2021] [Accepted: 06/17/2021] [Indexed: 11/16/2022] Open
Abstract
The experimental use of poly (alcohol-vinyl) (PVA) as a skin curative is increasing widely. However, the use of this hydrogel is challenging due to its favorable properties for microbiota growth. The association with silver nanoparticles (AgNPs) as an antimicrobial agent turns the match for PVA as a dressing, as it focuses on creating a physical barrier to avoid wound dehydration. When associated with extracellular components, such as the collagen matrix, the device obtained can create the desired biological conditions to act as a skin substitute. This study aimed to analyze the anti-microbiological activity and the in vitro and in vivo responses of a bilaminar device of PVA containing AgNPs associated with a membrane of collagen-hyaluronic acid (col-HA). Additionally, mesenchymal stem cells were cultured in the device to evaluate in vitro responses and in vivo immunomodulatory and healing behavior. The device morphology revealed a porous pattern that favored water retention and in vitro cell adhesion. Controlled wounds in the dorsal back of rat skins revealed a striking skin remodeling with new epidermis fulfilling all previously injured areas after 14 and 28 days. No infections or significant inflammations were observed, despite increased angiogenesis, and no fibrosis-markers were identified as compared to controls. Although few antibacterial activities were obtained, the addition of AgNPs prevented fungal growth. All results demonstrated that the combination of the components used here as a dermal device, chosen according to previous miscellany studies of low/mid-cost biomaterials, can promote skin protection avoiding infections and dehydration, minimize the typical wound inflammatory responses, and favor the cellular healing responses, features that give rise to further clinical trials of the device here developed.
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Affiliation(s)
- Dario Mendes Júnior
- Faculty of Medical Sciences and Health, Pontifical Catholic University of São Paulo (PUC/SP), São Paulo 18030-070, Brazil; (D.M.J.); (M.A.H.); (D.K.)
| | - Moema A. Hausen
- Faculty of Medical Sciences and Health, Pontifical Catholic University of São Paulo (PUC/SP), São Paulo 18030-070, Brazil; (D.M.J.); (M.A.H.); (D.K.)
| | - Jéssica Asami
- Faculty of Mechanical Engineering, State University of Campinas (UNICAMP), São Paulo 13083-860, Brazil;
| | - Akemi M. Higa
- Instituto de Medicina Tropical, Universidade de São Paulo (USP), São Paulo 05403-000, Brazil;
| | - Fabio L. Leite
- Department of Physics, Chemistry and Mathematics, Federal University of São Carlos (UFSCar), São Paulo 18052-780, Brazil; (F.L.L.); (G.P.M.)
| | - Giovanni P. Mambrini
- Department of Physics, Chemistry and Mathematics, Federal University of São Carlos (UFSCar), São Paulo 18052-780, Brazil; (F.L.L.); (G.P.M.)
| | - Andre L. Rossi
- Applied Physics Department, Brazilian Center of Physics Research (CBPF), Rio de Janeiro 22290-180, Brazil;
| | - Daniel Komatsu
- Faculty of Medical Sciences and Health, Pontifical Catholic University of São Paulo (PUC/SP), São Paulo 18030-070, Brazil; (D.M.J.); (M.A.H.); (D.K.)
| | - Eliana A. de Rezende Duek
- Faculty of Medical Sciences and Health, Pontifical Catholic University of São Paulo (PUC/SP), São Paulo 18030-070, Brazil; (D.M.J.); (M.A.H.); (D.K.)
- Faculty of Mechanical Engineering, State University of Campinas (UNICAMP), São Paulo 13083-860, Brazil;
- Correspondence:
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75
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Krzyzanowski D, Kruszewski M, Grzelak A. Differential Action of Silver Nanoparticles on ABCB1 (MDR1) and ABCC1 (MRP1) Activity in Mammalian Cell Lines. MATERIALS 2021; 14:ma14123383. [PMID: 34207361 PMCID: PMC8234686 DOI: 10.3390/ma14123383] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 06/09/2021] [Accepted: 06/13/2021] [Indexed: 01/01/2023]
Abstract
Silver nanoparticles (AgNPs), due to their unique properties have been receiving immense attention in recent years. In addition to their antibacterial and antifungal activities, AgNPs also cause apoptosis, mitochondria disfunction, nucleic acid damage and show potent anticancer properties in both multidrug resistance (MDR) and sensitive tumors. The MDR phenomenon, caused by the presence of ATP-binding cassette (ABC) proteins, is responsible for the failure of chemotherapy. Thus, investigating the influence of widely used AgNPs on ABC transporters is crucial. In the present study, we have examined the cytotoxicity of silver nanoparticles of a nominal size of 20 nm (Ag20) on the cell lines of different tissue origins. In addition, we have checked the ATP-binding cassette transporters’ activity and expression under AgNP exposure. The results indicate that Ag20 shows a toxic effect on tested cells, as well as modulating the expression and transport activity of ABC proteins.
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Affiliation(s)
- Damian Krzyzanowski
- Department of Pediatrics, Oncology and Hematology, Medical University of Lodz, 91-738 Lodz, Poland
- Laboratory of Epigenetics, Institute of Medical Biology, Polish Academy of Sciences, 93-232 Lodz, Poland
- Correspondence:
| | - Marcin Kruszewski
- Centre for Radiobiology and Biological Dosimetry, Institute of Nuclear Chemistry and Technology, 03-195 Warsaw, Poland;
- Department of Molecular Biology and Translational Research, Institute of Rural Health, 20-090 Lublin, Poland
| | - Agnieszka Grzelak
- Department of Molecular Biophysics, University of Lodz, 90-237 Lodz, Poland;
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76
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Martínez-Higuera A, Rodríguez-Beas C, Villalobos-Noriega JMA, Arizmendi-Grijalva A, Ochoa-Sánchez C, Larios-Rodríguez E, Martínez-Soto JM, Rodríguez-León E, Ibarra-Zazueta C, Mora-Monroy R, Borbón-Nuñez HA, García-Galaz A, Candia-Plata MDC, López-Soto LF, Iñiguez-Palomares R. Hydrogel with silver nanoparticles synthesized by Mimosa tenuiflora for second-degree burns treatment. Sci Rep 2021; 11:11312. [PMID: 34050228 PMCID: PMC8163746 DOI: 10.1038/s41598-021-90763-w] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Accepted: 05/07/2021] [Indexed: 02/04/2023] Open
Abstract
In this work we use Mimosa tenuiflora (MtE) extracts as reducing agents to synthesize silver nanoparticles (AgMt NPs) which were characterized by DPPH and Total Polyphenols Assays, UV-visible, X-ray diffractometer (XRD), high-resolution transmission electron microscopy (HRTEM), X-ray photoelectron spectroscopy (XPS) and Thermogravimetric analysis (TGA). AgMt NPs possess average sizes of 21 nm and fcc crystalline structure, it was also confirmed that the MtE is present in the AgMt NPs even after the cleaning protocol applied. Subsequently, carbopol hydrogels were made and the MtE and the synthesized AgMt NPs were dispersed in different gels (MtE-G and AgMt NPs-G, respectively) at 100 µg/g concentration. The gels were characterized by UV-Vis, IR, and rheology. Antimicrobial tests were performed using Staphylococcus aureus and Escherichia coli. Burn wound healing was evaluated in a second-degree burn injury on a Wistar rats model for 14 days and additional skin biopsies were examined with histopathological analysis. Gel with commercial silver nanoparticles (Ag NPs) was prepared and employed as a control on the biological assays. Hydrogel system containing silver nanoparticles synthesized with Mimosa tenuiflora (AgMt NPs-G) is a promising therapeutic strategy for burn wound healing, this due to bactericidal and anti-inflammatory effects, which promotes a more effective recovery (in percentage terms) by damaged area.
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Affiliation(s)
- Aaron Martínez-Higuera
- Department of Physics, Nanotechnology Graduate Program, University of Sonora, Rosales and Transversal, 83000, Hermosillo, Sonora, Mexico
| | - César Rodríguez-Beas
- Department of Physics, Nanotechnology Graduate Program, University of Sonora, Rosales and Transversal, 83000, Hermosillo, Sonora, Mexico
| | | | - Abraham Arizmendi-Grijalva
- Department of Physics, Nanotechnology Graduate Program, University of Sonora, Rosales and Transversal, 83000, Hermosillo, Sonora, Mexico
| | - Carlos Ochoa-Sánchez
- Department of Physics, Nanotechnology Graduate Program, University of Sonora, Rosales and Transversal, 83000, Hermosillo, Sonora, Mexico
| | - Eduardo Larios-Rodríguez
- Department of Chemical and Metallurgical Engineering, University of Sonora, Rosales and Transversal, 83000, Hermosillo, Sonora, Mexico
| | - Juan Manuel Martínez-Soto
- Department of Medicine and Health Science, University of Sonora, Rosales and Transversal, 83000, Hermosillo, Sonora, Mexico
| | - Ericka Rodríguez-León
- Department of Physics, Nanotechnology Graduate Program, University of Sonora, Rosales and Transversal, 83000, Hermosillo, Sonora, Mexico
| | - Cristina Ibarra-Zazueta
- Department of Agriculture and Livestock, University of Sonora, Road to Kino Bay km 20.5, Hermosillo, Sonora, Mexico
| | - Roberto Mora-Monroy
- Department of Physic Researching, University of Sonora, Rosales and Transversal, 83000, Hermosillo, Sonora, Mexico
| | - Hugo Alejandro Borbón-Nuñez
- CONACYT-Centro de Nanociencias Y Nanotecnología, UNAM, Km 107 Carretera Tijuana-Ensenada s/n, 22800, Ensenada, B.C. C.P, Mexico
| | - Alfonso García-Galaz
- Food Science Coordination, Research Center in Food & Development (CIAD), Road Gustavo Enrique Astiazarán Rosas, No. 46, Col. La Victoria, 83304, Hermosillo, Sonora, Mexico
| | - María Del Carmen Candia-Plata
- Department of Medicine and Health Science, University of Sonora, Rosales and Transversal, 83000, Hermosillo, Sonora, Mexico
| | - Luis Fernando López-Soto
- Department of Medicine and Health Science, University of Sonora, Rosales and Transversal, 83000, Hermosillo, Sonora, Mexico
| | - Ramón Iñiguez-Palomares
- Department of Physics, Nanotechnology Graduate Program, University of Sonora, Rosales and Transversal, 83000, Hermosillo, Sonora, Mexico.
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77
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Mussel-Inspired Deposition of Ag Nanoparticles on Dopamine-Modified Cotton Fabric and Analysis of its Functional, Mechanical and Dyeing Properties. J Inorg Organomet Polym Mater 2021. [DOI: 10.1007/s10904-021-02034-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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78
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Spirescu VA, Chircov C, Grumezescu AM, Vasile BȘ, Andronescu E. Inorganic Nanoparticles and Composite Films for Antimicrobial Therapies. Int J Mol Sci 2021; 22:4595. [PMID: 33925617 PMCID: PMC8123905 DOI: 10.3390/ijms22094595] [Citation(s) in RCA: 58] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 04/23/2021] [Accepted: 04/26/2021] [Indexed: 02/06/2023] Open
Abstract
The development of drug-resistant microorganisms has become a critical issue for modern medicine and drug discovery and development with severe socio-economic and ecological implications. Since standard and conventional treatment options are generally inefficient, leading to infection persistence and spreading, novel strategies are fundamentally necessary in order to avoid serious global health problems. In this regard, both metal and metal oxide nanoparticles (NPs) demonstrated increased effectiveness as nanobiocides due to intrinsic antimicrobial properties and as nanocarriers for antimicrobial drugs. Among them, gold, silver, copper, zinc oxide, titanium oxide, magnesium oxide, and iron oxide NPs are the most preferred, owing to their proven antimicrobial mechanisms and bio/cytocompatibility. Furthermore, inorganic NPs can be incorporated or attached to organic/inorganic films, thus broadening their application within implant or catheter coatings and wound dressings. In this context, this paper aims to provide an up-to-date overview of the most recent studies investigating inorganic NPs and their integration into composite films designed for antimicrobial therapies.
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Affiliation(s)
- Vera Alexandra Spirescu
- Department of Science and Engineering of Oxide Materials and Nanomaterials, University Politehnica of Bucharest, 011061 Bucharest, Romania; (V.A.S.); (C.C.); (B.Ș.V.); (E.A.)
| | - Cristina Chircov
- Department of Science and Engineering of Oxide Materials and Nanomaterials, University Politehnica of Bucharest, 011061 Bucharest, Romania; (V.A.S.); (C.C.); (B.Ș.V.); (E.A.)
| | - Alexandru Mihai Grumezescu
- Department of Science and Engineering of Oxide Materials and Nanomaterials, University Politehnica of Bucharest, 011061 Bucharest, Romania; (V.A.S.); (C.C.); (B.Ș.V.); (E.A.)
- Research Institute of the University of Bucharest—ICUB, University of Bucharest, 050657 Bucharest, Romania
| | - Bogdan Ștefan Vasile
- Department of Science and Engineering of Oxide Materials and Nanomaterials, University Politehnica of Bucharest, 011061 Bucharest, Romania; (V.A.S.); (C.C.); (B.Ș.V.); (E.A.)
| | - Ecaterina Andronescu
- Department of Science and Engineering of Oxide Materials and Nanomaterials, University Politehnica of Bucharest, 011061 Bucharest, Romania; (V.A.S.); (C.C.); (B.Ș.V.); (E.A.)
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79
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Estevez MB, Casaux ML, Fraga M, Faccio R, Alborés S. Biogenic Silver Nanoparticles as a Strategy in the Fight Against Multi-Resistant Salmonella enterica Isolated From Dairy Calves. Front Bioeng Biotechnol 2021; 9:644014. [PMID: 33981689 PMCID: PMC8107374 DOI: 10.3389/fbioe.2021.644014] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2020] [Accepted: 03/31/2021] [Indexed: 12/03/2022] Open
Abstract
Infectious diseases are one of the most important health problems worldwide, one of the main causes being the development of multi-resistant microorganisms. Likewise, the zoonotic potential of some pathogens and their ability to transfer resistance mechanisms, reduce the therapeutic options in both humans and animals. Salmonella enterica is an important pathogen that affects a wide range of animal species and humans, being Salmonella Typhimurium one of the most frequent serotypes affecting cattle, causing enteritis, diarrhea, and septicemia. The search for alternative therapeutic approaches has gained importance since the emergence of multidrug resistance to antibiotics and periodic outbreaks of salmonellosis. In this sense, the discovery of new drugs and the development of new strategies, such as the use of nanoparticles with antimicrobial activity, are very promising. The aim of this work was the extracellular production of biogenic silver nanoparticles using fungal extracts and the evaluation of their antimicrobial activity against resistant and multi-resistant Salmonella Typhimurium strains. We here demonstrated the potential of the biogenic nanoparticles as effective bacteriostatic and bactericidal agents for use in biomedical applications. In addition, Confocal Raman Microscopy and Atomic Force Microscopy were used to advance the understanding of the antimicrobial mechanism of biogenic nanoparticles against these pathogenic strains, the results of which suggested that the nanoparticles produced damage in several bacterial cell structures.
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Affiliation(s)
- María Belén Estevez
- Área de Microbiología, Departamento de Biociencias, Facultad de Química, Universidad de la República, Montevideo, Uruguay.,Posgrado en Química, Facultad de Química, Universidad de la República, Montevideo, Uruguay
| | - María Laura Casaux
- Plataforma de Investigación en Salud Animal, Estación Experimental INIA La Estanzuela, Instituto Nacional de Investigación Agropecuaria, Colonia, Uruguay
| | - Martín Fraga
- Plataforma de Investigación en Salud Animal, Estación Experimental INIA La Estanzuela, Instituto Nacional de Investigación Agropecuaria, Colonia, Uruguay
| | - Ricardo Faccio
- Departamento de Experimentación y Teoría de la Estructura de la Materia y sus Aplicaciones (DETEMA), Facultad de Química, Centro NanoMat and Grupo Física, Universidad de la República, Montevideo, Uruguay
| | - Silvana Alborés
- Área de Microbiología, Departamento de Biociencias, Facultad de Química, Universidad de la República, Montevideo, Uruguay
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80
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Microorganisms Photocatalytic Inactivation on Ag3PO4 Sub-Microcrystals Under WLEDs Light Source. J Inorg Organomet Polym Mater 2021. [DOI: 10.1007/s10904-021-01930-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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81
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Długosz O, Lis K, Banach M. Synthesis and antimicrobial properties of CaCO 3-nAg and nAg-CaCO 3 nanocomposites. NANOTECHNOLOGY 2021; 32:025715. [PMID: 32992310 DOI: 10.1088/1361-6528/abbcaa] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The nanocomposites of nAg-CaCO3 and CaCO3-nAg with different mass content of silver nanoparticles were obtained in a two-stage continuous microwave process. The nanocomposites were characterized by XRD, TEM, UV-vis, and FTIR spectroscopy. The effects of microwave radiation, silver nanoparticles content in the composite and the molar ratio of tannic acid to silver on the size of salt crystallites were studied. The effectiveness of combining silver nanoparticles with CaCO3 was confirmed to exceed 99%. Depending on the input parameters applied, the size of salt crystals in nAg/CaCO3 nanocomposites ranged from 25 to 45 nm, while the size of salt crystals in CaCO3/nAg nanocomposites ranged from 26 to 41 nm. In addition, some of the compositions were tested for their antimicrobial activity on selected yeast and bacterial microorganisms. The prepared materials present a biocidal effect, which makes them suitable for use in antimicrobial preparations.
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Affiliation(s)
- Olga Długosz
- Faculty of Chemical Engineering and Technology, Cracow University of Technology, Cracow, Poland
| | - Kinga Lis
- Faculty of Chemical Engineering and Technology, Cracow University of Technology, Cracow, Poland
| | - Marcin Banach
- Faculty of Chemical Engineering and Technology, Cracow University of Technology, Cracow, Poland
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82
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Ajiboye TO, Oluwarinde BO, Montso PK, Ateba CN, Onwudiwe DC. Antimicrobial activities of Cu(II), In(III), and Sb(III) complexes of N-methyl-N–phenyl dithiocarbamate complexes. RESULTS IN CHEMISTRY 2021. [DOI: 10.1016/j.rechem.2021.100241] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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