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Khan S, Singh S, Gaikwad S, Nawani N, Junnarkar M, Pawar SV. Optimization of process parameters for the synthesis of silver nanoparticles from Piper betle leaf aqueous extract, and evaluation of their antiphytofungal activity. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:27221-27233. [PMID: 31065983 DOI: 10.1007/s11356-019-05239-2] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Accepted: 04/22/2019] [Indexed: 05/24/2023]
Abstract
Biological methods offer eco-friendly and cost-effective alternatives for the synthesis of silver nanoparticles (AgNPs). The present study highlights a green process where AgNPs were synthesized and optimized by using silver nitrate (AgNO3) and the aqueous extract of Piper betle (Pbet) leaf as the reducing and capping agent. The stable and optimized process for the synthesis of Pbet-AgNPs was exposure of reaction mixture into the sunlight for 40 min, pH 9.0, and 2 mM AgNO3 using 1:4 diluted Pbet leaf aqueous extract. The optimized Pbet-AgNPs were characterized by UV-visible spectroscopy, high-resolution field emission scanning electron microscopy (FE-SEM), X-ray diffractometry (XRD), and Fourier-transform infrared spectroscopy (FTIR). The prepared Pbet-AgNPs were spherical in shape with size in the range of 6-14 nm. These nanoparticles were stable for 6 months in aqueous solution at room temperature under dark conditions. The biogenic synthesized Pbet-AgNPs are found to have significant antifungal activity against plant pathogenic fungi, Alternaria brassicae and Fusarium solani. Synthesized Pbet-AgNPs potentially reduced the fungal growth in a dose-dependent manner. Microscopic observation of treated mycelium showed that Pbet-AgNPs could disrupt the mycelium cell wall and induce cellular permeability. Protein leakage assay supports these findings. Overall, this study revealed the efficacy of green synthesized AgNPs to control the plant fungal pathogens. Pbet leaves are a rich source of phenolic biomolecule(s). It was hypothesized that these biomolecule(s) mediated metal reduction reactions. In this context, the present work investigates the phytobiomolecule(s) of the aqueous extract of Pbet leaves using high-resolution liquid chromatography-mass spectroscopy (HR-LCMS) method. The analysis revealed that eugenol, chavicol, and hydroxychavicol were present in the Pbet aqueous extract.
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Affiliation(s)
- Sadaf Khan
- Microbial Diversity Research Centre, Dr. D. Y. Patil Biotechnology and Bioinformatics Institute, Dr. D. Y. Patil Vidyapeeth, Tathawade, Pune, Maharashtra, 411033, India
| | - Simran Singh
- Microbial Diversity Research Centre, Dr. D. Y. Patil Biotechnology and Bioinformatics Institute, Dr. D. Y. Patil Vidyapeeth, Tathawade, Pune, Maharashtra, 411033, India
| | - Swapnil Gaikwad
- Microbial Diversity Research Centre, Dr. D. Y. Patil Biotechnology and Bioinformatics Institute, Dr. D. Y. Patil Vidyapeeth, Tathawade, Pune, Maharashtra, 411033, India.
| | - Neelu Nawani
- Microbial Diversity Research Centre, Dr. D. Y. Patil Biotechnology and Bioinformatics Institute, Dr. D. Y. Patil Vidyapeeth, Tathawade, Pune, Maharashtra, 411033, India
| | - Manisha Junnarkar
- Microbial Diversity Research Centre, Dr. D. Y. Patil Biotechnology and Bioinformatics Institute, Dr. D. Y. Patil Vidyapeeth, Tathawade, Pune, Maharashtra, 411033, India
| | - Sarika Vishnu Pawar
- Microbial Diversity Research Centre, Dr. D. Y. Patil Biotechnology and Bioinformatics Institute, Dr. D. Y. Patil Vidyapeeth, Tathawade, Pune, Maharashtra, 411033, India.
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Park T, Lee S, Amatya R, Cheong H, Moon C, Kwak HD, Min KA, Shin MC. ICG-Loaded PEGylated BSA-Silver Nanoparticles for Effective Photothermal Cancer Therapy. Int J Nanomedicine 2020; 15:5459-5471. [PMID: 32801700 PMCID: PMC7406329 DOI: 10.2147/ijn.s255874] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Accepted: 07/08/2020] [Indexed: 12/11/2022] Open
Abstract
Purpose Indocyanine green (ICG), a near infrared (NIR) dye clinically approved in medical diagnostics, possesses great heat conversion efficiency, which renders itself as an effective photosensitizer for photothermal therapy (PTT) of cancer. However, there remain bottleneck challenges for use in PTT, which are the poor photo and plasma stability of ICG. To address these problems, in this research, ICG-loaded silver nanoparticles were prepared and evaluated for the applicability as an effective agent for photothermal cancer therapy. Methods and Results PEGylated bovine serum albumin (BSA)-coated silver core/shell nanoparticles were synthesized with a high loading of ICG (“PEG-BSA-AgNP/ICG”). Physical characterization was carried out using size analyzer, transmission electron microscopy, and Fourier transform infrared spectrophotometry to identify successful preparation and size stability. ICG-loading content and the photothermal conversion efficiency of the particles were confirmed with inductively coupled plasma mass spectrometry and laser instruments. In vitro studies showed that the PEG-BSA-AgNP/ICG could provide great photostability for ICG, and their applicability for PTT was verified from the cellular study results. Furthermore, when the PEG-BSA-AgNP/ICG were tested in vivo, study results exhibited that ICG could stably remain in the blood circulation for a markedly long period (plasma half-life: 112 min), and about 1.7% ID/g tissue could be accumulated in the tumor tissue at 4 h post-injection. Such nanoparticle accumulation in the tumor enabled tumor surface temperature to be risen to 50°C (required for photo-ablation) by laser irradiation and led to successful inhibition of tumor growth in the B16F10 s.c. syngeneic nude mice model, with minimal systemic toxicity. Conclusion Our findings demonstrated that PEG-BSA-AgNPs could serve as effective carriers for delivering ICG to the tumor tissue with great stability and safety.
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Affiliation(s)
- Taehoon Park
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Gyeongsang National University, Jinju, Gyeongnam 52828, Republic of Korea
| | - Sumi Lee
- College of Pharmacy and Inje Institute of Pharmaceutical Sciences and Research, Inje University, Gimhae, Gyeongnam 50834, Republic of Korea
| | - Reeju Amatya
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Gyeongsang National University, Jinju, Gyeongnam 52828, Republic of Korea
| | - Heesun Cheong
- Division of Cancer Biology, National Cancer Center, Goyang, Gyeonggi-do 10408, Republic of Korea
| | - Cheol Moon
- College of Pharmacy, Sunchon National University, Suncheon, Jeonnam 57922, Republic of Korea
| | - Hyun Duck Kwak
- Department of Ophthalmology, Busan Paik Hospital, Inje University College of Medicine, Busanjin-gu, Busan 47392, Republic of Korea
| | - Kyoung Ah Min
- College of Pharmacy and Inje Institute of Pharmaceutical Sciences and Research, Inje University, Gimhae, Gyeongnam 50834, Republic of Korea
| | - Meong Cheol Shin
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Gyeongsang National University, Jinju, Gyeongnam 52828, Republic of Korea
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Pandey AK, Verma S. Combination drug therapy for multimodal treatment of cancer by targeting mitochondrial transcriptional pathway: An in-silico approach. Med Hypotheses 2020; 143:110075. [PMID: 32652430 DOI: 10.1016/j.mehy.2020.110075] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 06/23/2020] [Accepted: 07/01/2020] [Indexed: 12/26/2022]
Abstract
Cancer pathologies are deeply associated with mitochondrial dysfunction. TFAM, transcription factor A of mitochondria plays eminent role in transcription and replication of mtDNA to synthesize different mitochondrial proteins, has been reported to have elevated levels during malignancy and can be a compelling target of the disease. We hypothesize that violacein and silver nanoparticles, as a dyad drug system, can structurally bind and inhibit TFAM at the interface of TFAM-DNA complex during replication and thus can hinder majority of pathways contributing to cancer proliferation. It is evident from our molecular docking analysis of violacein and silver nanoparticles with the TFAM-DNA complex which gave resulting negative binding energy of -8.836 kcal/mol for violacein with inhibition constant (Ki value) of 1.51 μM and high binding score of 9518 for silver nanoparticle in the DNA interacting cavity of TFAM. Hence, our hypothesis of employing violacein and silver nanoparticle for cancer treatment by TFAM inhibition seems highly promising and further in-vitro and in-vivo studies are extremely demanded in this concern.
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Affiliation(s)
- Anand Kumar Pandey
- Department of Biotechnology Engineering, Institute of Engineering and Technology, Bundelkhand University, Jhansi 284128, India.
| | - Shalja Verma
- Department of Biotechnology Engineering, Institute of Engineering and Technology, Bundelkhand University, Jhansi 284128, India; Department of Biochemical Engineering and Biotechnology. Indian Institute of Technology, Hauz Khas, New Delhi 110016, India
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Al-Doaiss A, Jarrar Q, Moshawih S. Hepatic histopathological and ultrastructural alterations induced by 10 nm silver nanoparticles. IET Nanobiotechnol 2020; 14:405-411. [PMID: 32691743 PMCID: PMC8676371 DOI: 10.1049/iet-nbt.2020.0039] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Revised: 03/13/2020] [Accepted: 03/25/2020] [Indexed: 11/19/2022] Open
Abstract
Silver nanoparticles (Ag NPs) are invested in various sectors and are becoming more persistent in our ambient environment with potential risk on our health and the ecosystems. The current study aims to investigate the histological, histochemical and ultrastructural hepatic changes that might be induced by 10 nm silver nanomaterials. Male mice (BALB/C) were exposed for 35 injections of daily dose of 10 nm Ag NPs (2 mg/kg). Liver tissues were subjected to examination by light and electron microscopy for histological, histochemical and ultrastructural alterations. Exposure to Ag NPs induced Kupffer cells hyperplasia, sinusoidal dilatation, apoptosis, ground glass hepatocytes appearance, nuclear changes, inflammatory cells infiltration, hepatocytes degeneration and necrosis. In addition, 10 nm Ag NPs induced histochemical alterations mainly glycogen depletion with no hemosiderin precipitation. Moreover, these nanomaterials exhibited ultrastructure alterations including mitochondrial swelling and cristolysis, cytoplasmic vacuolation, apoptosis, multilammellar myelin figures formation and endoplasmic destruction and reduction. The findings revealed that Ag NPs can induce alterations in the hepatic tissues, the chemical components of the hepatocytes and in the ultrastructure of the liver. One may also conclude that small size Ag NPs, which are increasingly used in human products could cause various toxigenic responses to all hepatic tissue components.
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Affiliation(s)
- Amin Al-Doaiss
- Anatomy and Histology Department, Faculty of Medicine, Sana'a University, Sana'a, Yemen
| | - Qais Jarrar
- Department of Applied Pharmaceutical Sciences and Pharmacy Practice, Faculty of Pharmacy, Isra University, Jordan.
| | - Said Moshawih
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universeti Putra Malaysia (UPM), Malaysia
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Dinparvar S, Bagirova M, Allahverdiyev AM, Abamor ES, Safarov T, Aydogdu M, Aktas D. A nanotechnology-based new approach in the treatment of breast cancer: Biosynthesized silver nanoparticles using Cuminum cyminum L. seed extract. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2020; 208:111902. [DOI: 10.1016/j.jphotobiol.2020.111902] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Revised: 04/24/2020] [Accepted: 05/18/2020] [Indexed: 12/19/2022]
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Zhang Y, Li Y, Gao Z, Ding B, An P, Zhang X, Sun B, Sun B. Mesoporous Silica-Coated Silver Nanoframes as Drug-Delivery Vehicles for Chemo/Starvation/Metal Ion Multimodality Therapy. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:6345-6351. [PMID: 32388995 DOI: 10.1021/acs.langmuir.0c00191] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Cutting off the energy supply by glucose oxidase (GOx) to starve cancer cells has been a feasible and efficient oncotherapy strategy. The employment of GOx can effectively starve tumor cells by aerobic hydrolysis of glucose hopefully strengthening the abnormality (including the decrease in pH, the increase of hypoxia, and toxic hydrogen peroxide) in the tumor microenvironment (TME). On this basis, we designed and fabricated a GOx-conjugated yolk-shell Ag@mSiO2 nanoframe with Ag NPs and GOx-conjugated mesoporous silica as the yolk and the shell, respectively, to make full use of changes the GOx induces in TME. Specifically, lower pH and H2O2 could accelerate the transformation of Ag nanoparticles to poisonous Ag ions. At the same time, the anabatic hypoxia condition in turn activated chemotherapy drug tirapazamine (TPZ) to exert a chemotherapeutic effect, thereby achieving effective chemo/starvation and metal ion multimodality therapy. The drug release experiment in vitro demonstrated that the GOx is the key to the nanocarriers, which can activate the whole system. The excellent cellular uptake performances of nanocarriers were corroborated by a confocal laser scanning microscope (CLSM). In addition, its superb cancer-killing effect has been confirmed by cytotoxicity and apoptosis experiments. These results indicated that the drug-delivery system achieved the cascade cancer-killing process in situ and synergistic chemo/starvation/metal ion therapy, which has a bright prospect for treating cancer.
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Affiliation(s)
- Yu Zhang
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 210089, P. R. China
| | - Yaojia Li
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 210089, P. R. China
| | - Zhiguo Gao
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 210089, P. R. China
| | - Bowen Ding
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 210089, P. R. China
| | - Peijing An
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 210089, P. R. China
| | - Xichen Zhang
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 210089, P. R. China
| | - Bowen Sun
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 210089, P. R. China
| | - Baiwang Sun
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 210089, P. R. China
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Shurpik DN, Sevastyanov DA, Zelenikhin PV, Padnya PL, Evtugyn VG, Osin YN, Stoikov II. Nanoparticles based on the zwitterionic pillar[5]arene and Ag +: synthesis, self-assembly and cytotoxicity in the human lung cancer cell line A549. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2020; 11:421-431. [PMID: 32215229 PMCID: PMC7082700 DOI: 10.3762/bjnano.11.33] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Accepted: 02/09/2020] [Indexed: 06/10/2023]
Abstract
For the first time, stable pillar[5]arene/Ag+ nanoparticles, consisting of water-soluble pillar[5]arene containing γ-sulfobetaine fragments and Ag+ ions without Ag-Ag bonds, were synthesized and characterized. The pillar[5]arene/Ag+ (ratio 1:10) nanoparticles obtained were cubic with a rib length of 100 nm and are less cytotoxic than Ag+ ions. The survival of the A549 model cells in the presence of pillar[5]arene/Ag+ (1:10) nanoparticles at a concentration of 30 and 40 μM was 76% and 55%, while in the absence of pillar[5]arene, the cell survival for free Ag+ ions at the same concentration was 30% and 10%, respectively. The results can be used to create new antibacterial materials and 2D biomedical coatings.
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Affiliation(s)
- Dmitriy N Shurpik
- Kazan Federal University, A.M. Butlerov Chemistry Institute, 420008 Kremlevskaya, 18, Kazan, Russian Federation
| | - Denis A Sevastyanov
- Kazan Federal University, A.M. Butlerov Chemistry Institute, 420008 Kremlevskaya, 18, Kazan, Russian Federation
| | - Pavel V Zelenikhin
- Institute of Fundamental Medicine and Biology, Kazan Federal University, 420008 Kremlevskaya, 18, Kazan, Russian Federation
| | - Pavel L Padnya
- Kazan Federal University, A.M. Butlerov Chemistry Institute, 420008 Kremlevskaya, 18, Kazan, Russian Federation
| | - Vladimir G Evtugyn
- Interdisciplinary Centre for Analytical Microscopy, Kazan Federal University, 420008 Kazan, Kremlevskaya 18, Russian Federation
| | - Yuriy N Osin
- Interdisciplinary Centre for Analytical Microscopy, Kazan Federal University, 420008 Kazan, Kremlevskaya 18, Russian Federation
| | - Ivan I Stoikov
- Kazan Federal University, A.M. Butlerov Chemistry Institute, 420008 Kremlevskaya, 18, Kazan, Russian Federation
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Mofolo MJ, Kadhila P, Chinsembu KC, Mashele S, Sekhoacha M. Green synthesis of silver nanoparticles from extracts of Pechuel-loeschea leubnitziae: their anti-proliferative activity against the U87 cell line. INORG NANO-MET CHEM 2020. [DOI: 10.1080/24701556.2020.1729191] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Motshewa Justina Mofolo
- Unit for drug discovery Research, Department of Health Science, Faculty of Health and Environmental Sciences, Central University of Technology, Free State, Bloemfontein, South Africa
| | - Pauline Kadhila
- Department of Biological Science, University of Namibia, Windhoek, Namibia
| | | | - Samson Mashele
- Unit for drug discovery Research, Department of Health Science, Faculty of Health and Environmental Sciences, Central University of Technology, Free State, Bloemfontein, South Africa
| | - Mamello Sekhoacha
- Department of Pharmacology, Faculty of Health Science, University of the Free State, Bloemfontein, South Africa
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Cobos M, De-La-Pinta I, Quindós G, Fernández MJ, Fernández MD. Graphene Oxide-Silver Nanoparticle Nanohybrids: Synthesis, Characterization, and Antimicrobial Properties. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E376. [PMID: 32098083 PMCID: PMC7075288 DOI: 10.3390/nano10020376] [Citation(s) in RCA: 73] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Revised: 02/17/2020] [Accepted: 02/19/2020] [Indexed: 12/12/2022]
Abstract
Drug resistance of pathogenic microorganisms has become a global public health problem, which has prompted the development of new materials with antimicrobial properties. In this context, antimicrobial nanohybrids are an alternative due to their synergistic properties. In this study, we used an environmentally friendly one-step approach to synthesize graphene oxide (GO) decorated with silver nanoparticles (GO-AgNPs). By this process, spherical AgNPs of average size less than 4 nm homogeneously distributed on the surface of the partially reduced GO can be generated in the absence of any stabilizing agent, only with ascorbic acid (L-AA) as a reducing agent and AgNO3 as a metal precursor. The size of the AgNPs can be controlled by the AgNO3 concentration and temperature. Smaller AgNPs are obtained at lower concentrations of the silver precursor and lower temperatures. The antimicrobial properties of nanohybrids against Gram-negative bacteria Escherichia coli and Pseudomonas aeruginosa, Gram-positive Staphylococcus aureus, and the yeast Candida albicans were found to be concentration- and time-dependent. C. albicans and S. aureus showed the highest susceptibility to GO-AgNPs. These nanohybrids can be used as nanofillers in polymer nanocomposites to develop materials with antimicrobial activity for applications in different areas, and another potential application could be cancer therapeutic agents.
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Affiliation(s)
- Mónica Cobos
- Department of Polymer Science and Technology, Faculty of Chemistry, University of the Basque Country (UPV/EHU), Paseo Manuel Lardizábal 3, 20018 San Sebastián, Spain; (M.C.); (M.J.F.)
| | - Iker De-La-Pinta
- Department of Immunology, Microbiology and Parasitology, Faculty of Medicine and Nursing, University of the Basque Country (UPV/EHU), Barrio Sarriena s/n, Leioa 48940, Spain; (I.D.-L.-P.); (G.Q.)
| | - Guillermo Quindós
- Department of Immunology, Microbiology and Parasitology, Faculty of Medicine and Nursing, University of the Basque Country (UPV/EHU), Barrio Sarriena s/n, Leioa 48940, Spain; (I.D.-L.-P.); (G.Q.)
| | - M. Jesús Fernández
- Department of Polymer Science and Technology, Faculty of Chemistry, University of the Basque Country (UPV/EHU), Paseo Manuel Lardizábal 3, 20018 San Sebastián, Spain; (M.C.); (M.J.F.)
| | - M. Dolores Fernández
- Department of Polymer Science and Technology, Faculty of Chemistry, University of the Basque Country (UPV/EHU), Paseo Manuel Lardizábal 3, 20018 San Sebastián, Spain; (M.C.); (M.J.F.)
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Ghodake G, Kim M, Sung JS, Shinde S, Yang J, Hwang K, Kim DY. Extracellular Synthesis and Characterization of Silver Nanoparticles-Antibacterial Activity against Multidrug-Resistant Bacterial Strains. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E360. [PMID: 32092941 PMCID: PMC7075330 DOI: 10.3390/nano10020360] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Revised: 02/15/2020] [Accepted: 02/16/2020] [Indexed: 01/03/2023]
Abstract
Herein, we report the use of a cell-free extract for the extracellular synthesis of silver nanoparticles (AgNPs) and their potential to address the growing threat of multidrug-resistant (MDR) pathogenic bacteria. The reproducibility of AgNP synthesis was good and AgNP formation kinetics were monitored as a function of various reaction factors via ultraviolet-visible absorption spectroscopy. This green method was dependent on the alkaline pH of the reaction mixture. With the addition of dilute sodium hydroxide, well-dispersed AgNPs could be produced in large quantities via the classical nucleation and growth route. The new biosynthetic route enabled the production of AgNPs within a narrow size range of 4 to 17 nm. The AgNPs were characterized using various techniques and their antibacterial activity against MDR pathogenic bacteria was evaluated. Field-emission scanning electron microscopic imaging revealed prominent morphological changes in Staphylococcus aureus cells due to mechanical damage, which led to cell death. Escherichia coli cells showed signs of contraction and intracellular fluid discharge as a consequence of disrupted cell membrane function. This new biologically-assisted extracellular strategy is potentially useful for the decontamination of surfaces and is expected to contribute to the development of new products containing AgNPs.
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Affiliation(s)
- Gajanan Ghodake
- Department of Biological and Environmental Science, Dongguk University-Seoul, Biomedical Campus, 32 Dongguk-ro, Ilsandong-gu, Goyang-si 10326, Gyeonggi-do, Korea; (G.G.); (S.S.); (J.Y.); (K.H.)
| | - Min Kim
- Department of Life Science, Dongguk University-Seoul, Biomedical Campus, 32 Dongguk-ro, Ilsandong-gu, Goyang-si 10326, Gyeonggi-do, Korea; (M.K.); (J.-S.S.)
| | - Jung-Suk Sung
- Department of Life Science, Dongguk University-Seoul, Biomedical Campus, 32 Dongguk-ro, Ilsandong-gu, Goyang-si 10326, Gyeonggi-do, Korea; (M.K.); (J.-S.S.)
| | - Surendra Shinde
- Department of Biological and Environmental Science, Dongguk University-Seoul, Biomedical Campus, 32 Dongguk-ro, Ilsandong-gu, Goyang-si 10326, Gyeonggi-do, Korea; (G.G.); (S.S.); (J.Y.); (K.H.)
| | - Jiwook Yang
- Department of Biological and Environmental Science, Dongguk University-Seoul, Biomedical Campus, 32 Dongguk-ro, Ilsandong-gu, Goyang-si 10326, Gyeonggi-do, Korea; (G.G.); (S.S.); (J.Y.); (K.H.)
| | - Kyojung Hwang
- Department of Biological and Environmental Science, Dongguk University-Seoul, Biomedical Campus, 32 Dongguk-ro, Ilsandong-gu, Goyang-si 10326, Gyeonggi-do, Korea; (G.G.); (S.S.); (J.Y.); (K.H.)
| | - Dae-Young Kim
- Department of Biological and Environmental Science, Dongguk University-Seoul, Biomedical Campus, 32 Dongguk-ro, Ilsandong-gu, Goyang-si 10326, Gyeonggi-do, Korea; (G.G.); (S.S.); (J.Y.); (K.H.)
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Loyola-Rodríguez JP, Torres-Méndez F, Espinosa-Cristobal LF, García-Cortes JO, Loyola-Leyva A, González FJ, Soto-Barreras U, Nieto-Aguilar R, Contreras-Palma G. Antimicrobial activity of endodontic sealers and medications containing chitosan and silver nanoparticles against Enterococcus faecalis. J Appl Biomater Funct Mater 2020; 17:2280800019851771. [PMID: 31373255 DOI: 10.1177/2280800019851771] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND The main microorganism associated with the failure of endodontic treatments is Enterococcus faecalis. Although several endodontic therapeutics have demonstrated antimicrobial activity against E. faecalis, the antimicrobial effectiveness of chitosan (CsNPs) and silver nanoparticles (AgNPs) included into conventional endodontic sealers for endodontic therapies is still unclear. AIM The objective of this study was to evaluate the antibacterial activity increment (AAI) of endodontic sealers containing CsNPs and AgNPs as well as some chemical components against E. faecalis by direct contact assays. METHODS CsNPs and AgNPs were synthesized by reduction and ionic gelation methods, respectively. Nanoparticles were characterized by dynamic light scattering and energy dispersive X-ray analysis. The bactericidal activity was tested on monolayers on agar plates and collagen membrane surface assays against E. faecalis. RESULTS The size of CsNPs was 70.6±14.8 nm and zeta potential was 52.0±5.4 mV; the size of AgNPs was 54.2±8.5 nm, and zeta potential was -48.4±6.9 mV. All materials, single or combined, showed an AAI, especially when CsNPs, chlorhexidine (Chx), and the combination of CsNPs-Chx were added. However, the combination of CsNPs-Chx showed the highest (55%) AAI, followed by Chx (35.5%) and CsNPs (11.1%), respectively. There was a significant statistical difference in all comparisons (p < 0.05). Tubliseal (40%) and AH Plus (32%) sealants showed a higher AAI on E. faecalis in the monolayer test and collagen membrane assay analyzed by scanning electron microscopy. CONCLUSIONS Tubliseal and AH plus sealers combined with nanoparticles, especially CsNPs-Chx, could be used for conventional endodontic treatments in the control of E. faecalis bacteria.
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Affiliation(s)
- Juan Pablo Loyola-Rodríguez
- 1 Laboratorio de Bionanomateriales, Facultad de Medicina, Universidad Autónoma de Guerrero, Acapulco, México
| | | | | | | | | | | | - Uriel Soto-Barreras
- 4 Facultad de Odontología, Universidad Autónoma de Chihuahua, Chihuahua, México
| | | | - Guillermo Contreras-Palma
- 1 Laboratorio de Bionanomateriales, Facultad de Medicina, Universidad Autónoma de Guerrero, Acapulco, México
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Pandey PK, Preeti, Rawat K, Prasad T, Bohidar HB. Multifunctional, fluorescent DNA-derived carbon dots for biomedical applications: bioimaging, luminescent DNA hydrogels, and dopamine detection. J Mater Chem B 2020; 8:1277-1289. [PMID: 31967170 DOI: 10.1039/c9tb01863h] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Here, we describe the synthesis of 2-3 nm, hydrophilic, blue fluorescence-emitting carbon dots (C-Dots, made using a DNA precursor) by the hydrothermal route from the gelling concentration of 2% (w/v) DNA. These dots exhibited highly efficient internalization in pathogenic fungal cells, negligible cytotoxicity, good PL stability, and high biocompatibility, thus demonstrating their potential as nanotrackers in microbial studies. Bioimaging was performed using Candida albicans as the representative for microbial pathogens. The novelty of these dots is that they formed fluorescent nanocomposite hydrogels with the same DNA much below the gelation concentration (1% w/v) and the tunable gels possessed strength between 20 and 80 Pa with the corresponding gelation temperature Tgel between 40 to 50 °C. The network density and gelation free energy data supported the superior crosslinking ability of these dots. The as-prepared hydrogels can replace the existing toxic quantum dot-based hydrogels for drug delivery. We also demonstrated the use of a DNA hydrogel-fabricated working electrode (DNA-C-Dot/ITO electrode) for the biosensing of dopamine. Our electrochemical biosensor had a detection limit of 5 × 10-3 mM for dopamine. These multifunctional, fluorescent C-Dots and hydrogel after suitable conjugation or loading with molecules and drugs hold promising potential for further exploitation in bioimaging, targeted drug delivery, wound healing, and biosensing applications.
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Affiliation(s)
| | - Preeti
- Special Centre for Nanoscience, Jawaharlal Nehru University, New Delhi, India.
| | - Kamla Rawat
- Department of Chemistry, School of Chemical and Life Science, Jamia Hamdard, New Delhi, India
| | - Tulika Prasad
- Special Centre for Nanoscience, Jawaharlal Nehru University, New Delhi, India. and Advanced Instrumentation Research and Facility, Jawaharlal Nehru University, New Delhi, India
| | - H B Bohidar
- School of Physical Sciences, Jawaharlal Nehru University, New Delhi, India. and Special Centre for Nanoscience, Jawaharlal Nehru University, New Delhi, India.
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63
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Laghrib F, Houcini H, Khalil F, Liba A, Bakasse M, Lahrich S, El Mhammedi MA. Synthesis of Silver Nanoparticles Using Chitosan as Stabilizer Agent: Application towards Electrocatalytical Reduction of p‐Nitrophenol. ChemistrySelect 2020. [DOI: 10.1002/slct.201903955] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- F. Laghrib
- Sultan Moulay Slimane University of Beni MellalLaboratory of Chemistry, Modeling and Environmental Sciences, Polydisciplinary faculty 25 000 Khouribga Morocco
| | - H. Houcini
- Sultan Moulay Slimane University of Beni MellalLaboratory of Chemistry, Modeling and Environmental Sciences, Polydisciplinary faculty 25 000 Khouribga Morocco
| | - F. Khalil
- Univ. Sidi Mohamed Ben AbdellahLaboratory of Applied Chemistry (LCA), Faculty of Science and Technology Immouzer Road, BP 2202 Fez Morocco
| | - A. Liba
- Univ. Sultan Moulay Slimane, Materials Physics LaboratoryFaculty of Science and Technology Beni Mellal Morocco
| | - M. Bakasse
- Sultan Moulay Slimane University of Beni MellalLaboratory of Chemistry, Modeling and Environmental Sciences, Polydisciplinary faculty 25 000 Khouribga Morocco
- Chouaib Doukkali UniversityFaculty of Sciences, Laboratory of Organic Bioorganic Chemistry and Environment El Jadida Morocco
| | - S. Lahrich
- Sultan Moulay Slimane University of Beni MellalLaboratory of Chemistry, Modeling and Environmental Sciences, Polydisciplinary faculty 25 000 Khouribga Morocco
| | - M. A. El Mhammedi
- Sultan Moulay Slimane University of Beni MellalLaboratory of Chemistry, Modeling and Environmental Sciences, Polydisciplinary faculty 25 000 Khouribga Morocco
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64
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Wumaier M, Yao TM, Hu XC, Hu ZA, Shi S. Luminescent Ru(ii)-thiol modified silver nanoparticles for lysosome targeted theranostics. Dalton Trans 2020; 48:10393-10397. [PMID: 31162516 DOI: 10.1039/c9dt00878k] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Silver nanoparticles (AgNPs) modified by luminescent Ru(ii) complexes not only possess bright red fluorescence but also can target lysosomes. Cell imaging and a cytotoxicity study suggest that Ru1-2·AgNPs may act as a potential theranostic agent.
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Affiliation(s)
- Maierhaba Wumaier
- Shanghai Key Laboratory of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, Shanghai 200092, PR China.
| | - Tian-Ming Yao
- Shanghai Key Laboratory of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, Shanghai 200092, PR China.
| | - Xiao-Chun Hu
- Shanghai Key Laboratory of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, Shanghai 200092, PR China.
| | - Zhi-An Hu
- Shanghai Key Laboratory of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, Shanghai 200092, PR China.
| | - Shuo Shi
- Shanghai Key Laboratory of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, Shanghai 200092, PR China. and Biomedical Multidisciplinary Innovation Research Institute, Shanghai East Hospital, Tongji University, Shanghai 200092, PR China
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65
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Jiang X, Fan X, Xu W, Zhang R, Wu G. Biosynthesis of Bimetallic Au–Ag Nanoparticles Using Escherichia coli and its Biomedical Applications. ACS Biomater Sci Eng 2019; 6:680-689. [DOI: 10.1021/acsbiomaterials.9b01297] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Xinglu Jiang
- Medical School of Southeast University, Nanjing 210009, People’s Republic of China
| | - Xiaobo Fan
- Medical School of Southeast University, Nanjing 210009, People’s Republic of China
| | - Wei Xu
- Medical School of Southeast University, Nanjing 210009, People’s Republic of China
| | - Rui Zhang
- Medical School of Southeast University, Nanjing 210009, People’s Republic of China
| | - Guoqiu Wu
- Center of Clinical Laboratory Medicine, Zhongda Hospital, Southeast University, Nanjing 210009, People’s Republic of China
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66
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Bonilla-Gameros L, Chevallier P, Sarkissian A, Mantovani D. Silver-based antibacterial strategies for healthcare-associated infections: Processes, challenges, and regulations. An integrated review. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2019; 24:102142. [PMID: 31843661 DOI: 10.1016/j.nano.2019.102142] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Revised: 08/16/2019] [Accepted: 12/05/2019] [Indexed: 10/25/2022]
Abstract
Healthcare-associated infections (HCAIs) are a major cause of morbidity and mortality worldwide. One of the main routes of transmission is by contact with contaminated surfaces, where nosocomial pathogens form sessile communities called biofilms. When forming biofilms, these pathogens are extremely resistant to antibiotics and standard cleaning procedures. In this regard, in order to eliminate the extent of biofilm formation on these surfaces, intensive efforts have been deployed, particularly in recent years, to develop new antibacterial surfaces containing silver or silver compounds, which can be used to prevent the formation of biofilm. In this review, recent developments in the design and manufacturing of silver-based antibacterial surfaces are described in detail. Up-to-date toxicity and governmental regulations are then extensively presented. Finally, based on current research in this promising field, the main challenges and perspectives for their effective implementation are discussed.
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Affiliation(s)
- Linda Bonilla-Gameros
- Laboratory for Biomaterials and Bioengineering (CRC-I) Department of Min-Met-Mat Engineering and the CHU de Québec Research Center, Laval University, Québec, QC, Canada
| | - Pascale Chevallier
- Laboratory for Biomaterials and Bioengineering (CRC-I) Department of Min-Met-Mat Engineering and the CHU de Québec Research Center, Laval University, Québec, QC, Canada
| | | | - Diego Mantovani
- Laboratory for Biomaterials and Bioengineering (CRC-I) Department of Min-Met-Mat Engineering and the CHU de Québec Research Center, Laval University, Québec, QC, Canada.
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67
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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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68
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Cytotoxic effect of green synthesized silver nanoparticles in MCF7 and MDA-MB-231 human breast cancer cells in vitro. THE NUCLEUS 2019. [DOI: 10.1007/s13237-019-00305-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
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69
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Wadhawan A, Chatterjee M, Singh G. Present Scenario of Bioconjugates in Cancer Therapy: A Review. Int J Mol Sci 2019; 20:ijms20215243. [PMID: 31652668 PMCID: PMC6862033 DOI: 10.3390/ijms20215243] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Revised: 08/24/2019] [Accepted: 08/30/2019] [Indexed: 12/24/2022] Open
Abstract
Cancer is one of the deadliest diseases and poses a risk to people all over the world. Surgery, chemo, and radiation therapy have been the only options available until today to combat this major problem. Chemotherapeutic drugs have been used for treatment for more than 50 years. Unfortunately, these drugs have inherent cytotoxicities and tumor cells have started inducing resistance against these drugs. Other common techniques such as surgery and radiotherapy have their own drawbacks. Therefore, such techniques are incompetent tools to alleviate the disease efficiently without any adverse effects. This scenario has inspired researchers to develop alternative techniques with enhanced therapeutic effects and minimal side effects. Such techniques include targeted therapy, liposomal therapy, hormonal therapy, and immunotherapy, etc. However, these therapies are expensive and not effective enough. Furthermore, researchers have conjugated therapeutic agents or drugs with different molecules, delivery vectors, and/or imaging modalities to combat such problems and enhance the therapeutic effect. This conjugation technique has led to the development of bioconjugation therapy, in which at least one molecule is of biological origin. These bioconjugates are the new therapeutic strategies, having prospective synergistic antitumor effects and have potency to overcome the complications being produced by chemo drugs. Herein, we provide an overview of various bioconjugates developed so far, as well as their classification, characteristics, and targeting approach for cancer. Additionally, the most popular nanostructures based on their organic or inorganic origin (metallic, magnetic, polymeric nanoparticles, dendrimers, and silica nanoparticles) characterized as nanocarriers are also discussed. Moreover, we hope that this review will provide inspiration for researchers to develop better bioconjugates as therapeutic agents.
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Affiliation(s)
- Aishani Wadhawan
- Biotechnology Branch, University Institute of Engineering and Technology, Sector-25, South Campus, Panjab University, Chandigarh Pin code-160014, India.
| | - Mary Chatterjee
- Biotechnology Branch, University Institute of Engineering and Technology, Sector-25, South Campus, Panjab University, Chandigarh Pin code-160014, India.
| | - Gurpal Singh
- Department of Pharmaceutical Sciences, University Institute of Pharmaceutical Sciences, Sector-14, Panjab University, Chandigarh Pin code-160014, India.
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70
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Rahman A, Kumar S, Bafana A, Lin J, Dahoumane SA, Jeffryes C. A Mechanistic View of the Light-Induced Synthesis of Silver Nanoparticles Using Extracellular Polymeric Substances of Chlamydomonas reinhardtii. Molecules 2019; 24:molecules24193506. [PMID: 31569641 PMCID: PMC6804166 DOI: 10.3390/molecules24193506] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Revised: 09/24/2019] [Accepted: 09/25/2019] [Indexed: 12/12/2022] Open
Abstract
In the current study, extracellular polymeric substances (EPS) of Chlamydomonas reinhardtii and photon energy biosynthetically converted Ag+ to silver nanoparticles (AgNPs). The reaction mechanism began with the non-photon-dependent adsorption of Ag+ to EPS biomolecules. An electron from the EPS biomolecules was then donated to reduce Ag+ to Ag0, while a simultaneous release of H+ acidified the reaction mixture. The acidification of the media and production rate of AgNPs increased with increasing light intensity, indicating the light-dependent nature of the AgNP synthesis process. In addition, the extent of Ag+ disappearance from the aqueous phase and the AgNP production rate were both dependent on the quantity of EPS in the reaction mixture, indicating Ag+ adsorption to EPS as an important step in AgNP production. Following the reaction, stabilization of the NPs took place as a function of EPS concentration. The shifts in the intensities and positions of the functional groups, detected by Fourier-transform infrared spectroscopy (FTIR), indicated the potential functional groups in the EPS that reduced Ag+, capped Ag0, and produced stable AgNPs. Based on these findings, a hypothetic three-step, EPS-mediated biosynthesis mechanism, which includes a light-independent adsorption of Ag+, a light-dependent reduction of Ag+ to Ag0, and an EPS concentration-dependent stabilization of Ag0 to AgNPs, has been proposed.
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Affiliation(s)
- Ashiqur Rahman
- Nanobiomaterials and Bioprocessing Laboratory (NABLAB), Dan F. Smith Department of Chemical Engineering, Lamar University, Beaumont, TX 77710, USA.
| | - Shishir Kumar
- Nanobiomaterials and Bioprocessing Laboratory (NABLAB), Dan F. Smith Department of Chemical Engineering, Lamar University, Beaumont, TX 77710, USA.
| | - Adarsh Bafana
- Nanobiomaterials and Bioprocessing Laboratory (NABLAB), Dan F. Smith Department of Chemical Engineering, Lamar University, Beaumont, TX 77710, USA.
| | - Julia Lin
- Nanobiomaterials and Bioprocessing Laboratory (NABLAB), Dan F. Smith Department of Chemical Engineering, Lamar University, Beaumont, TX 77710, USA.
| | - Si Amar Dahoumane
- School of Biological Sciences and Engineering, Yachay Tech University, Hacienda San José s/n, San Miguel de Urcuquí 100119, Ecuador.
| | - Clayton Jeffryes
- Nanobiomaterials and Bioprocessing Laboratory (NABLAB), Dan F. Smith Department of Chemical Engineering, Lamar University, Beaumont, TX 77710, USA.
- Center for Advances in Water & Air Quality, Lamar University, 211 Redbird Ln, Box 10888, Beaumont, TX 77710-0088, USA.
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71
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De Matteis V, Cascione M, Toma CC, Albanese G, De Giorgi ML, Corsalini M, Rinaldi R. Silver Nanoparticles Addition in Poly(Methyl Methacrylate) Dental Matrix: Topographic and Antimycotic Studies. Int J Mol Sci 2019; 20:E4691. [PMID: 31546661 PMCID: PMC6801538 DOI: 10.3390/ijms20194691] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Revised: 09/10/2019] [Accepted: 09/19/2019] [Indexed: 02/06/2023] Open
Abstract
The widespread use of nanoparticles (NPs) in medical devices has opened a new scenario in the treatment and prevention of many diseases and infections owing to unique physico-chemical properties of NPs. In this way, silver nanoparticles (AgNPs) are known to have a strong antimicrobial activity, even at low concentrations, due to their ability to selectively destroy cellular membranes. In particular, in the field of dental medicine, the use of AgNPs in different kinds of dental prosthesis matrixes could be a fundamental tool in immunodepressed patients that suffer of different oral infections. Candida albicans (C. albicans), an opportunistic pathogenic yeast with high colonization ability, is one of the causative agents of oral cavity infection. In our work, we added monodispersed citrate-capping AgNPs with a size of 20 nm at two concentrations (3 wt% and 3.5 wt%) in poly(methyl methacrylate) (PMMA), the common resin used to develop dental prostheses. After AgNPs characterization, we evaluated the topographical modification of PMMA and PMMA with the addition of AgNPs by means of atomic force microscopy (AFM), showing the reduction of surface roughness. The C. albicans colonization on PMMA surfaces was assessed by the Miles and Misra technique as well as by scanning electron microscopy (SEM) at 24 h and 48 h with encouraging results on the reduction of yeast viability after AgNPs exposure.
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Affiliation(s)
- Valeria De Matteis
- Department of Mathematics and Physics "Ennio De Giorgi", University of Salento, 73100 Lecce (LE), Italy.
| | - Mariafrancesca Cascione
- Department of Mathematics and Physics "Ennio De Giorgi", University of Salento, 73100 Lecce (LE), Italy.
| | - Chiara Cristina Toma
- Department of Mathematics and Physics "Ennio De Giorgi", University of Salento, 73100 Lecce (LE), Italy.
| | - Giovanni Albanese
- U.O.C. of Plastic Surgery and Burns Center, Department of Oral Hygiene Clini, Hospital "A. Perrino", 72100 Brindisi (BR), Italy.
| | - Maria Luisa De Giorgi
- Department of Mathematics and Physics "Ennio De Giorgi", University of Salento, 73100 Lecce (LE), Italy.
| | - Massimo Corsalini
- Dental School, Interdisciplinary Department of Medicine, University of Bari "Aldo Moro", 70124 Bari (Ba), Italy.
| | - Rosaria Rinaldi
- Department of Mathematics and Physics "Ennio De Giorgi", University of Salento, 73100 Lecce (LE), Italy.
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Nguyen AK, Patel R, Noble JM, Zheng J, Narayan RJ, Kumar G, Goering PL. Effects of Subcytotoxic Exposure of Silver Nanoparticles on Osteogenic Differentiation of Human Bone Marrow Stem Cells. ACTA ACUST UNITED AC 2019. [DOI: 10.1089/aivt.2019.0001] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Alexander K. Nguyen
- University of North Carolina/North Carolina State University Joint Department of Biomedical Engineering, Raleigh, North Carolina
- Office of Science and Engineering Laboratories, Center for Devices and Radiological Health, U.S. Food and Drug Administration, Silver Spring, Maryland
| | - Reema Patel
- Office of Science and Engineering Laboratories, Center for Devices and Radiological Health, U.S. Food and Drug Administration, Silver Spring, Maryland
| | - Jade M. Noble
- Office of Generic Drugs, Center for Drug Evaluation and Research, U.S. Food and Drug Administration, Silver Spring, Maryland
| | - Jiwen Zheng
- Office of Science and Engineering Laboratories, Center for Devices and Radiological Health, U.S. Food and Drug Administration, Silver Spring, Maryland
| | - Roger J. Narayan
- University of North Carolina/North Carolina State University Joint Department of Biomedical Engineering, Raleigh, North Carolina
| | - Girish Kumar
- Office of Science and Engineering Laboratories, Center for Devices and Radiological Health, U.S. Food and Drug Administration, Silver Spring, Maryland
| | - Peter L. Goering
- Office of Science and Engineering Laboratories, Center for Devices and Radiological Health, U.S. Food and Drug Administration, Silver Spring, Maryland
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Liao C, Li Y, Tjong SC. Antibacterial Activities of Aliphatic Polyester Nanocomposites with Silver Nanoparticles and/or Graphene Oxide Sheets. NANOMATERIALS (BASEL, SWITZERLAND) 2019; 9:E1102. [PMID: 31374855 PMCID: PMC6724040 DOI: 10.3390/nano9081102] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Revised: 07/21/2019] [Accepted: 07/25/2019] [Indexed: 12/18/2022]
Abstract
Aliphatic polyesters such as poly(lactic acid) (PLA), polycaprolactone (PCL) and poly(lactic-co-glycolic) acid (PLGA) copolymers have been widely used as biomaterials for tissue engineering applications including: bone fixation devices, bone scaffolds, and wound dressings in orthopedics. However, biodegradable aliphatic polyesters are prone to bacterial infections due to the lack of antibacterial moieties in their macromolecular chains. In this respect, silver nanoparticles (AgNPs), graphene oxide (GO) sheets and AgNPs-GO hybrids can be used as reinforcing nanofillers for aliphatic polyesters in forming antimicrobial nanocomposites. However, polymeric matrix materials immobilize nanofillers to a large extent so that they cannot penetrate bacterial membrane into cytoplasm as in the case of colloidal nanoparticles or nanosheets. Accordingly, loaded GO sheets of aliphatic polyester nanocomposites have lost their antibacterial functions such as nanoknife cutting, blanket wrapping and membrane phospholipid extraction. In contrast, AgNPs fillers of polyester nanocomposites can release silver ions for destroying bacterial cells. Thus, AgNPs fillers are more effective than loaded GO sheets of polyester nanocomposiites in inhibiting bacterial infections. Aliphatic polyester nanocomposites with AgNPs and AgNPs-GO fillers are effective to kill multi-drug resistant bacteria that cause medical device-related infections.
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Affiliation(s)
- Chengzhu Liao
- Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China.
| | - Yuchao Li
- Department of Materials Science and Engineering, Liaocheng University, Liaocheng 252000, China
| | - Sie Chin Tjong
- Department of Physics, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong 999077, China.
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74
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Nakamura S, Sato M, Sato Y, Ando N, Takayama T, Fujita M, Ishihara M. Synthesis and Application of Silver Nanoparticles (Ag NPs) for the Prevention of Infection in Healthcare Workers. Int J Mol Sci 2019; 20:E3620. [PMID: 31344881 PMCID: PMC6695748 DOI: 10.3390/ijms20153620] [Citation(s) in RCA: 111] [Impact Index Per Article: 22.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Revised: 07/19/2019] [Accepted: 07/23/2019] [Indexed: 12/21/2022] Open
Abstract
Silver is easily available and is known to have microbicidal effect; moreover, it does not impose any adverse effects on the human body. The microbicidal effect is mainly due to silver ions, which have a wide antibacterial spectrum. Furthermore, the development of multidrug-resistant bacteria, as in the case of antibiotics, is less likely. Silver ions bind to halide ions, such as chloride, and precipitate; therefore, when used directly, their microbicidal activity is shortened. To overcome this issue, silver nanoparticles (Ag NPs) have been recently synthesized and frequently used as microbicidal agents that release silver ions from particle surface. Depending on the specific surface area of the nanoparticles, silver ions are released with high efficiency. In addition to their bactericidal activity, small Ag NPs (<10 nm in diameter) affect viruses although the microbicidal effect of silver mass is weak. Because of their characteristics, Ag NPs are useful countermeasures against infectious diseases, which constitute a major issue in the medical field. Thus, medical tools coated with Ag NPs are being developed. This review outlines the synthesis and utilization of Ag NPs in the medical field, focusing on environment-friendly synthesis and the suppression of infections in healthcare workers (HCWs).
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Affiliation(s)
- Shingo Nakamura
- Division of Biomedical Engineering, National Defense Medical College Research Institute, Saitama 359-8513, Japan.
| | - Masahiro Sato
- Section of Gene Expression Regulation, Frontier Science Research Center, Kagoshima University, Kagoshima 890-8544, Japan
| | - Yoko Sato
- Division of Biomedical Engineering, National Defense Medical College Research Institute, Saitama 359-8513, Japan
| | - Naoko Ando
- Division of Biomedical Engineering, National Defense Medical College Research Institute, Saitama 359-8513, Japan
| | - Tomohiro Takayama
- Department of Oral and Maxillofacial Surgery, National Defense Medical College Hospital, Saitama 359-8513, Japan
| | - Masanori Fujita
- Division of Environmental Medicine, National Defense Medical College Research Institute, Saitama 359-8513, Japan
| | - Masayuki Ishihara
- Division of Biomedical Engineering, National Defense Medical College Research Institute, Saitama 359-8513, Japan
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Lee B, Lee MJ, Yun SJ, Kim K, Choi IH, Park S. Silver nanoparticles induce reactive oxygen species-mediated cell cycle delay and synergistic cytotoxicity with 3-bromopyruvate in Candida albicans, but not in Saccharomyces cerevisiae. Int J Nanomedicine 2019; 14:4801-4816. [PMID: 31308659 PMCID: PMC6613462 DOI: 10.2147/ijn.s205736] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Accepted: 05/14/2019] [Indexed: 12/12/2022] Open
Abstract
Background: Silver nanoparticles (AgNPs) inhibit the proliferation of various fungi; however, their mechanisms of action remain poorly understood. To better understand the inhibitory mechanisms, we focused on the early events elicited by 5 nm AgNPs in pathogenic Candida albicans and non-pathogenic Saccharomyces cerevisiae. Methods: The effect of 5 nm and 100 nm AgNPs on fungus cell proliferation was analyzed by growth kinetics monitoring and spot assay. We examined cell cycle progression, reactive oxygen species (ROS) production, and cell death using flow cytometry. Glucose uptake was assessed using tritium-labeled 2-deoxyglucose. Results: The growth of both C. albicans and S. cerevisiae was suppressed by treatment with 5 nm AgNPs but not with 100 nm AgNPs. In addition, 5 nm AgNPs induced cell cycle arrest and a reduction in glucose uptake in both fungi after 30 minutes of culture in a dose-dependent manner (P<0.05). However, in C. albicans only, an increase in ROS production was detected after exposure to 5 nm AgNPs. Concordantly, an ROS scavenger blocked the effect of 5 nm AgNPs on the cell cycle and glucose uptake in C. albicans only. Furthermore, the growth-inhibition effect of 5 nm AgNPs was not greater in S. cerevisiae mutant strains deficient in oxidative stress response genes than it was in wild type. Finally, 5 nm AgNPs together with a glycolysis inhibitor, 3-bromopyruvate, synergistically enhanced cell death in C. albicans (P<0.05) but not in S. cerevisiae. Conclusion: AgNPs exhibit antifungal activity in a manner that may or may not be ROS dependent, according to the fungal species. The combination of AgNPs with 3-bromopyruvate may be more useful against infection with C. albicans.
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Affiliation(s)
- Bokyoung Lee
- Department of Microbiology, Ajou University School of Medicine, Suwon, 442-749, Republic of Korea
- Department of Biomedical Sciences, The Graduate School, Ajou University, Suwon, 442-749, Republic of Korea
| | - Mi Jin Lee
- Department of Microbiology, Ajou University School of Medicine, Suwon, 442-749, Republic of Korea
| | - Su Jin Yun
- Department of Microbiology, Ajou University School of Medicine, Suwon, 442-749, Republic of Korea
- Department of Biomedical Sciences, The Graduate School, Ajou University, Suwon, 442-749, Republic of Korea
| | - Kyongmin Kim
- Department of Microbiology, Ajou University School of Medicine, Suwon, 442-749, Republic of Korea
- Department of Biomedical Sciences, The Graduate School, Ajou University, Suwon, 442-749, Republic of Korea
| | - In-Hong Choi
- Department of Microbiology, Institute for Immunology and Immunological Diseases, Yonsei University College of Medicine, Seoul, 120-752, Republic of Korea
| | - Sun Park
- Department of Microbiology, Ajou University School of Medicine, Suwon, 442-749, Republic of Korea
- Department of Biomedical Sciences, The Graduate School, Ajou University, Suwon, 442-749, Republic of Korea
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Recent Progress in the Development of Poly(lactic- co-glycolic acid)-Based Nanostructures for Cancer Imaging and Therapy. Pharmaceutics 2019; 11:pharmaceutics11060280. [PMID: 31197096 PMCID: PMC6630460 DOI: 10.3390/pharmaceutics11060280] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Revised: 06/10/2019] [Accepted: 06/11/2019] [Indexed: 12/13/2022] Open
Abstract
Diverse nanosystems for use in cancer imaging and therapy have been designed and their clinical applications have been assessed. Among a variety of materials available to fabricate nanosystems, poly(lactic-co-glycolic acid) (PLGA) has been widely used due to its biocompatibility and biodegradability. In order to provide tumor-targeting and diagnostic properties, PLGA or PLGA nanoparticles (NPs) can be modified with other functional materials. Hydrophobic or hydrophilic therapeutic cargos can be placed in the internal space or adsorbed onto the surface of PLGA NPs. Protocols for the fabrication of PLGA-based NPs for cancer imaging and therapy are already well established. Moreover, the biocompatibility and biodegradability of PLGA may elevate its feasibility for clinical application in injection formulations. Size-controlled NP’s properties and ligand–receptor interactions may provide passive and active tumor-targeting abilities, respectively, after intravenous administration. Additionally, the introduction of several imaging modalities to PLGA-based NPs can enable drug delivery guided by in vivo imaging. Versatile platform technology of PLGA-based NPs can be applied to the delivery of small chemicals, peptides, proteins, and nucleic acids for use in cancer therapy. This review describes recent findings and insights into the development of tumor-targeted PLGA-based NPs for use of cancer imaging and therapy.
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Bigdeli R, Shahnazari M, Panahnejad E, Cohan RA, Dashbolaghi A, Asgary V. Cytotoxic and apoptotic properties of silver chloride nanoparticles synthesized using Escherichia coli cell-free supernatant on human breast cancer MCF 7 cell line. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2019; 47:1603-1609. [DOI: 10.1080/21691401.2019.1604533] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Razieh Bigdeli
- Research and Development Laboratory, Javid Biotechnology Institute, Tehran, Iran
| | - Masoumeh Shahnazari
- Research and Development Laboratory, Javid Biotechnology Institute, Tehran, Iran
| | - Erfan Panahnejad
- Research and Development Laboratory, Javid Biotechnology Institute, Tehran, Iran
| | - Reza Ahangari Cohan
- Nanobiotechnology Department, New Technologies Research Group, Pasteur Institute of Iran, Tehran, Iran
| | - Aziz Dashbolaghi
- Research and Development Laboratory, Javid Biotechnology Institute, Tehran, Iran
| | - Vahid Asgary
- Research and Development Laboratory, Javid Biotechnology Institute, Tehran, Iran
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78
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Green synthesis and biological activities of silver nanoparticles prepared by Carpesium cernuum extract. Arch Pharm Res 2019; 42:926-934. [DOI: 10.1007/s12272-019-01152-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Accepted: 04/02/2019] [Indexed: 10/27/2022]
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79
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Ahn EY, Jin H, Park Y. Assessing the antioxidant, cytotoxic, apoptotic and wound healing properties of silver nanoparticles green-synthesized by plant extracts. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 101:204-216. [PMID: 31029313 DOI: 10.1016/j.msec.2019.03.095] [Citation(s) in RCA: 68] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Revised: 02/21/2019] [Accepted: 03/25/2019] [Indexed: 01/10/2023]
Abstract
We synthesized silver nanoparticles using thirty Chinese plant extracts via a green synthetic strategy. UV-visible spectra showed that the silver nanoparticles have an absorbance at 450 nm. Among the thirty extracts, seven extracts (Cratoxylum formosum, Phoebe lanceolata, Scurrula parasitica, Ceratostigma minus, Mucuna birdwoodiana, Myrsine africana and Lindera strychnifolia) exhibited the successful synthesis of silver nanoparticles. These seven extracts showed higher 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity and reducing power than the other extracts. The silver nanoparticles synthesized using these seven extracts were mostly spherical with high colloidal stability. The cytotoxicity of these seven silver nanoparticle samples on human lung cancer cells (A549) was clearly higher than that of the extracts alone. Furthermore, the cytotoxicity was affected by the presence or absence of fetal bovine serum. Moreover, the cytotoxicity of the silver nanoparticles synthesized with Cratoxylum formosum and Mucuna birdwoodiana extracts resulted in apoptotic cell death in A549 cells. The wound healing activity observed by the cell scratch method on mouse fibroblast cells (NIH3T3) suggested that the Lindera strychnifolia extract produced silver nanoparticles with decent activity. These results provide ample and systematic information for researchers on the green synthesis of silver nanoparticles using plant extracts.
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Affiliation(s)
- Eun-Young Ahn
- College of Pharmacy and Inje Institute of Pharmaceutical Sciences and Research, Inje University, 197 Inje-ro, Gimhae, Gyeongnam 50834, Republic of Korea
| | - Hang Jin
- Institute of Medicinal Plants, Yunnan Academy of Agricultural Sciences, 2238 Beijing Road, Kunming, Yunnan Province 650205, China
| | - Youmie Park
- College of Pharmacy and Inje Institute of Pharmaceutical Sciences and Research, Inje University, 197 Inje-ro, Gimhae, Gyeongnam 50834, Republic of Korea.
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80
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Effects of Single and Mixed Energy Sources on Intracellular Nanoparticles Synthesized by Acidithiobacillus ferrooxidans. MINERALS 2019. [DOI: 10.3390/min9030163] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Effective biosynthesis of magnetite nanoparticles using current technology is challenging. We investigated the synthesis of nanoparticles by Acidithiobacillus ferrooxidans grown on ferrous iron, elemental sulphur, and mixtures of both substrates. A comparison of tests with different doping amounts of elemental sulphur in ferrous-containing medium showed that the addition of 0.25 and 0.5 M elemental sulphur to the medium resulted in an increased delay of microbial growth and ferrous iron oxidation. TEM suggested that the ferrous material was an essential energy source for the synthesis of nanoparticles in cells. TEM results indicated that the different ratios of ferrous and sulphur had no significant effect on the morphology of bacteria and the size of nanoparticles. High-resolution transmission electron microscopy (HRTEM), energy dispersive X-ray spectroscopy (EDX), and X-ray absorption near edge structure (XANES) showed that the nanoparticles were composed of magnetite. For the first time, HRTEM and XANES spectra in-situ characterization was conducted to investigate the nanoparticles that were synthesized by A. ferrooxidans. The findings from this study indicated that the different ratios of ferrous and sulphur had no significant effect on size and shape of nanoparticles synthesized by A. ferrooxidans.
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81
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Rahman A, Kumar S, Bafana A, Dahoumane SA, Jeffryes C. Individual and Combined Effects of Extracellular Polymeric Substances and Whole Cell Components of Chlamydomonas reinhardtii on Silver Nanoparticle Synthesis and Stability. Molecules 2019; 24:molecules24050956. [PMID: 30857177 PMCID: PMC6429613 DOI: 10.3390/molecules24050956] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2019] [Revised: 02/28/2019] [Accepted: 03/04/2019] [Indexed: 12/20/2022] Open
Abstract
The fresh water microalga Chlamydomonas reinhardtii bioreduced Ag⁺ to silver nanoparticles (AgNPs) via three biosynthetic routes in a process that could be a more sustainable alternative to conventionally produced AgNPs. The AgNPs were synthesized in either the presence of whole cell cultures, an exopolysaccharide (EPS)-containing cell culture supernatant, or living cells that had been separated from the EPS-containing supernatant and then washed before being suspended again in fresh media. While AgNPs were produced by all three methods, the washed cultures had no supernatant-derived EPS and produced only unstable AgNPs, thus the supernatant-EPS was shown to be necessary to cap and stabilize the biogenic AgNPs. TEM images showed stable AgNPs were mostly spherical and showed a bimodal size distribution about the size ranges of 3.0 ± 1.3 nm and 19.2 ± 5.0 nm for whole cultures and 3.5 ± 0.6 nm and 17.4 ± 2.6 nm for EPS only. Moreover, selected area electron diffraction pattern of these AgNPs confirmed their polycrystalline nature. FTIR of the as-produced AgNPs identified polysaccharides, polyphenols and proteins were responsible for the observed differences in the AgNP stability, size and shape. Additionally, Raman spectroscopy indicated carboxylate and amine groups were bound to the AgNP surface.
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Affiliation(s)
- Ashiqur Rahman
- Nanobiomaterials and Bioprocessing Laboratory (NABLAB), Dan F. Smith Department of Chemical Engineering, Lamar University, Beaumont, TX 77710, USA.
| | - Shishir Kumar
- Nanobiomaterials and Bioprocessing Laboratory (NABLAB), Dan F. Smith Department of Chemical Engineering, Lamar University, Beaumont, TX 77710, USA.
| | - Adarsh Bafana
- Nanobiomaterials and Bioprocessing Laboratory (NABLAB), Dan F. Smith Department of Chemical Engineering, Lamar University, Beaumont, TX 77710, USA.
| | - Si Amar Dahoumane
- School of Biological Sciences and Engineering, Yachay Tech University, Hacienda San José s/n, San Miguel de Urcuquí 100119, Ecuador.
| | - Clayton Jeffryes
- Nanobiomaterials and Bioprocessing Laboratory (NABLAB), Dan F. Smith Department of Chemical Engineering, Lamar University, Beaumont, TX 77710, USA.
- Center for Advances in Water & Air Quality, Lamar University, 211 Redbird Ln, Box 10888, Beaumont, TX 77710-0088, USA.
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82
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Biosynthetic Conversion of Ag⁺ to highly Stable Ag⁰ Nanoparticles by Wild Type and Cell Wall Deficient Strains of Chlamydomonas reinhardtii. Molecules 2018; 24:molecules24010098. [PMID: 30597856 PMCID: PMC6337529 DOI: 10.3390/molecules24010098] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2018] [Revised: 12/21/2018] [Accepted: 12/25/2018] [Indexed: 01/29/2023] Open
Abstract
In the current study, two different strains of the green, freshwater microalga Chlamydomonas reinhardtii bioreduced Ag+ to silver nanoparticles (AgNPs), which have applications in biosensors, biomaterials, and therapeutic and diagnostic tools. The bioreduction takes place in cell cultures of C. reinhardtii at ambient temperature and atmospheric pressure, thus eliminating the need for specialized equipment, harmful reducing agents or the generation of toxic byproducts. In addition to the visual changes in the cell culture, the production of AgNPs was confirmed by the characteristic surface plasmon resonance (SPR) band in the range of 415–425 nm using UV-Vis spectrophotometry and further evolution of the SPR peaks were studied by comparing the peak intensity at maximum absorbance over time. X-ray diffraction (XRD) determined that the NPs were Ag0. Micrographs from transmission electron microscopy (TEM) revealed that 97 ± 2% AgNPs were <10 nm in diameter. Ag+ to AgNP conversion was determined by inductively coupled plasma atomic emission spectroscopy (ICP-AES). The AgNPs were stable over time in the cell culture media, acetone, NaCl and reagent alcohol solutions. This was verified by a negligible change in the features of the SPR band after t > 300 days of storage at 4 °C.
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83
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Monowar T, Rahman MS, Bhore SJ, Raju G, Sathasivam KV. Silver Nanoparticles Synthesized by Using the Endophytic Bacterium Pantoea ananatis are Promising Antimicrobial Agents against Multidrug Resistant Bacteria. Molecules 2018; 23:E3220. [PMID: 30563220 PMCID: PMC6321088 DOI: 10.3390/molecules23123220] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Revised: 11/13/2018] [Accepted: 11/22/2018] [Indexed: 01/19/2023] Open
Abstract
Antibiotic resistance is one of the most important global problems currently confronting the world. Different biomedical applications of silver nanoparticles (AgNPs) have indicated them to be promising antimicrobial agents. In the present study, extracellular extract of an endophytic bacterium, Pantoea ananatis, was used for synthesis of AgNPs. The synthesized AgNPs were characterized by UV⁻Vis spectroscopy, FTIR, transmission electron microscopy (TEM), scanning electron microscopy-energy dispersive X-ray spectroscopy (SEM-EDX), and Zeta potential. The antimicrobial potential of the AgNPs against pathogenic Staphylococcus aureus subsp. aureus (ATCC 11632), Bacillus cereus (ATCC 10876), Escherichia coli (ATCC 10536), Pseudomonas aeruginosa (ATCC 10145) and Candida albicans (ATCC 10231), and multidrug resistant (MDR) Streptococcus pneumoniae (ATCC 700677), Enterococcus faecium (ATCC 700221) Staphylococcus aureus (ATCC 33592) Escherichia coli (NCTC 13351) was investigated. The synthesized spherical-shaped AgNPs with a size range of 8.06 nm to 91.32 nm exhibited significant antimicrobial activity at 6 μg/disc concentration against Bacillus cereus (ATCC 10876) and Candida albicans (ATCC 10231) which were found to be resistant to conventional antibiotics. The synthesized AgNPs showed promising antibacterial efficiency at 10 µg/disc concentration against the MDR strains. The present study suggests that AgNPs synthesized by using the endophytic bacterium P. ananatis are promising antimicrobial agent.
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Affiliation(s)
- Tahmina Monowar
- Unit of Microbiology, Faculty of Medicine, AIMST University, Kedah 08100, Malaysia.
- Department of Biotechnology, Faculty of Applied Sciences, AIMST University, Kedah 08100, Malaysia.
| | - Md Sayedur Rahman
- Regional Director, Ministry of Information, Government of the People's Republic of Bangladesh, Gopalganj 8100, Bangladesh.
| | - Subhash J Bhore
- Department of Biotechnology, Faculty of Applied Sciences, AIMST University, Kedah 08100, Malaysia.
| | - Gunasunderi Raju
- School of Distance Education, Universiti Sains Malaysia, Pulau Pinang 11800, Malaysia.
| | - Kathiresan V Sathasivam
- Department of Biotechnology, Faculty of Applied Sciences, AIMST University, Kedah 08100, Malaysia.
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84
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Silver and Copper Acute Effects on Membrane Proteins and Impact on Photosynthetic and Respiratory Complexes in Bacteria. mBio 2018; 9:mBio.01535-18. [PMID: 30459190 PMCID: PMC6247083 DOI: 10.1128/mbio.01535-18] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
The use of metal ions represents a serious threat to the environment and to all living organisms because of the acute toxicity of these ions. Nowadays, silver nanoparticles are one of the most widely used nanoparticles in various industrial and health applications. The antimicrobial effect of nanoparticles is in part related to the released Ag+ ions and their ability to interact with bacterial membranes. Here, we identify, both in vitro and in vivo, specific targets of Ag+ ions within the membrane of bacteria. This include complexes involved in photosynthesis, but also complexes involved in respiration. Silver (Ag+) and copper (Cu+) ions have been used for centuries in industry, as well as antimicrobial agents in agriculture and health care. Nowadays, Ag+ is also widely used in the field of nanotechnology. Yet, the underlying mechanisms driving toxicity of Ag+ ions in vivo are poorly characterized. It is well known that exposure to excess metal impairs the photosynthetic apparatus of plants and algae. Here, we show that the light-harvesting complex II (LH2) is the primary target of Ag+ and Cu+ exposure in the purple bacterium Rubrivivax gelatinosus. Ag+ and Cu+ specifically inactivate the 800-nm absorbing bacteriochlorophyll a (B800), while Ni2+ or Cd2+ treatment had no effect. This was further supported by analyses of CuSO4- or AgNO3-treated membrane proteins. Indeed, this treatment induced changes in the LH2 absorption spectrum related to the disruption of the interaction of B800 molecules with the LH2 protein. This caused the release of B800 molecules and subsequently impacted the spectral properties of the carotenoids within the 850-nm absorbing LH2. Moreover, previous studies have suggested that Ag+ can affect the respiratory chain in mitochondria and bacteria. Our data demonstrated that exposure to Ag+, both in vivo and in vitro, caused a decrease of cytochrome c oxidase and succinate dehydrogenase activities. Ag+ inhibition of these respiratory complexes was also observed in Escherichia coli, but not in Bacillus subtilis.
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85
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Lee WS, Kim E, Cho HJ, Kang T, Kim B, Kim MY, Kim YS, Song NW, Lee JS, Jeong J. The Relationship between Dissolution Behavior and the Toxicity of Silver Nanoparticles on Zebrafish Embryos in Different Ionic Environments. NANOMATERIALS 2018; 8:nano8090652. [PMID: 30142912 PMCID: PMC6165318 DOI: 10.3390/nano8090652] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Revised: 08/17/2018] [Accepted: 08/21/2018] [Indexed: 01/06/2023]
Abstract
A silver nanoparticle is one of the representative engineered nanomaterials with excellent optical, electrical, antibacterial properties. Silver nanoparticles are being increasingly used for medical products, water filters, and cosmetics, etc. However, silver nanoparticles are known to cause adverse effects on the ecosystem and human health. To utilize silver nanoparticles with minimized negative effects, it is important to understand the behavior of silver nanoparticles released to the environment. In this study, we compared toxicity behaviors of citrate-stabilized silver nanoparticles with polyethylene glycol coated silver nanoparticles in two different ionic environments, which are aquatic environments for developing zebrafish embryo. Depending on the composition of the ionic environment, citrate-stabilized silver nanoparticles and polyethylene glycol coated silver nanoparticles exhibited different behaviors in dissolution, aggregation, or precipitation, which governed the toxicity of silver nanoparticles on zebrafish embryos.
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Affiliation(s)
- Wang Sik Lee
- Hazards Monitoring Bionano Research Center, Korea Research Institute of Bioscience and Biotechnology, 125 Gwahak-ro, Yuseong-gu, Daejeon 34141, Korea.
- KRIBB School, University of Science and Technology, 125 Gwahak-ro, Yuseong-gu, Daejeon 34141, Korea.
| | - Eungwang Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Korea.
| | - Hyun-Ju Cho
- Hazards Monitoring Bionano Research Center, Korea Research Institute of Bioscience and Biotechnology, 125 Gwahak-ro, Yuseong-gu, Daejeon 34141, Korea.
- KRIBB School, University of Science and Technology, 125 Gwahak-ro, Yuseong-gu, Daejeon 34141, Korea.
| | - Taejoon Kang
- Hazards Monitoring Bionano Research Center, Korea Research Institute of Bioscience and Biotechnology, 125 Gwahak-ro, Yuseong-gu, Daejeon 34141, Korea.
- KRIBB School, University of Science and Technology, 125 Gwahak-ro, Yuseong-gu, Daejeon 34141, Korea.
| | - Bongsoo Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Korea.
| | - Min Young Kim
- Hazards Monitoring Bionano Research Center, Korea Research Institute of Bioscience and Biotechnology, 125 Gwahak-ro, Yuseong-gu, Daejeon 34141, Korea.
| | - Yong Sik Kim
- Hazards Monitoring Bionano Research Center, Korea Research Institute of Bioscience and Biotechnology, 125 Gwahak-ro, Yuseong-gu, Daejeon 34141, Korea.
| | - Nam Woong Song
- Advanced Instrumentation Institute, Korea Research Institute of Standards and Science, 267 Gajeong-ro, Yuseong-gu, Daejeon 34113, Korea.
| | - Jeong-Soo Lee
- Hazards Monitoring Bionano Research Center, Korea Research Institute of Bioscience and Biotechnology, 125 Gwahak-ro, Yuseong-gu, Daejeon 34141, Korea.
- KRIBB School, University of Science and Technology, 125 Gwahak-ro, Yuseong-gu, Daejeon 34141, Korea.
- Dementia DTC R&D Convergence Program, Korea Institute of Science and Technology, 5 Hwarang-ro, 14-gil, Seongbuk-gu, Seoul 02792, Korea.
| | - Jinyoung Jeong
- Hazards Monitoring Bionano Research Center, Korea Research Institute of Bioscience and Biotechnology, 125 Gwahak-ro, Yuseong-gu, Daejeon 34141, Korea.
- KRIBB School, University of Science and Technology, 125 Gwahak-ro, Yuseong-gu, Daejeon 34141, Korea.
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86
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Barras F, Aussel L, Ezraty B. Silver and Antibiotic, New Facts to an Old Story. Antibiotics (Basel) 2018; 7:antibiotics7030079. [PMID: 30135366 PMCID: PMC6163818 DOI: 10.3390/antibiotics7030079] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Revised: 08/19/2018] [Accepted: 08/21/2018] [Indexed: 11/21/2022] Open
Abstract
The therapeutic arsenal against bacterial infections is rapidly shrinking, as drug resistance spreads and pharmaceutical industry are struggling to produce new antibiotics. In this review we cover the efficacy of silver as an antibacterial agent. In particular we recall experimental evidences pointing to the multiple targets of silver, including DNA, proteins and small molecules, and we review the arguments for and against the hypothesis that silver acts by enhancing oxidative stress. We also review the recent use of silver as an adjuvant for antibiotics. Specifically, we discuss the state of our current understanding on the potentiating action of silver ions on aminoglycoside antibiotics.
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Affiliation(s)
- Frédéric Barras
- Laboratoire de Chimie Bactérienne (LCB), Institut de Microbiologie de la Méditerranée (IMM), Aix Marseille Université, Centre National de la Recherche Scientifique (CNRS), 13009 Marseille, France.
- Département de Microbiologie, Institut Pasteur, 75015 Paris, France.
| | - Laurent Aussel
- Laboratoire de Chimie Bactérienne (LCB), Institut de Microbiologie de la Méditerranée (IMM), Aix Marseille Université, Centre National de la Recherche Scientifique (CNRS), 13009 Marseille, France.
| | - Benjamin Ezraty
- Laboratoire de Chimie Bactérienne (LCB), Institut de Microbiologie de la Méditerranée (IMM), Aix Marseille Université, Centre National de la Recherche Scientifique (CNRS), 13009 Marseille, France.
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87
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Gurunathan S, Qasim M, Park C, Yoo H, Kim JH, Hong K. Cytotoxic Potential and Molecular Pathway Analysis of Silver Nanoparticles in Human Colon Cancer Cells HCT116. Int J Mol Sci 2018; 19:E2269. [PMID: 30072642 PMCID: PMC6121495 DOI: 10.3390/ijms19082269] [Citation(s) in RCA: 93] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Revised: 07/29/2018] [Accepted: 07/30/2018] [Indexed: 12/12/2022] Open
Abstract
Silver nanoparticles (AgNPs) have gained attention for use in cancer therapy. In this study, AgNPs were biosynthesized using naringenin. We investigated the anti-colon cancer activities of biogenic AgNPs through transcriptome analysis using RNA sequencing, and the mechanisms of AgNPs in regulating colon cancer cell growth. The synthesized AgNPs were characterized using UV⁻visible spectroscopy (UV⁻vis), X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), dynamic light scattering (DLS), and transmission electron microscopy (TEM). The AgNPs were spherical with sizes of 2⁻10 nm. Cytotoxicity assays indicated that the AgNPs in HCT116 colorectal cancer cells were very effective at low concentrations. The viability and proliferation of colon cancer cells treated with 5 µg/mL biogenic AgNPs were reduced by 50%. Increased lactate dehydrogenase leakage (LDH), reactive oxygen species (ROS) generation, malondialdehyde (MDA), and decreased dead-cell protease activity and ATP generation were observed. This impaired mitochondrial function and DNA damage led to cell death. The AgNPs upregulated and downregulated the most highly ranked biological processes of oxidation⁻reduction and cell-cycle regulation, respectively. Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis showed that AgNPs upregulated GADD45G in the p53 pathway. Thus, the AgNP tumor suppressive effects were mediated by cell apoptosis following DNA damage, as well as by mitochondrial dysfunction and cell-cycle arrest following aberrant regulation of p53 effector proteins. It is of interest to mention that, to the best of our knowledge, this study is the first report demonstrating cellular responses and molecular pathways analysis of AgNPs in HCT116 colorectal cancer cells.
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Affiliation(s)
- Sangiliyandi Gurunathan
- Department of Stem Cell and Regenerative Biotechnology and Humanized Pig Center (SRC), Konkuk Institute of Technology, Konkuk University, Seoul 05029, Korea.
| | - Muhammad Qasim
- Department of Stem Cell and Regenerative Biotechnology and Humanized Pig Center (SRC), Konkuk Institute of Technology, Konkuk University, Seoul 05029, Korea.
| | - Chanhyeok Park
- Department of Stem Cell and Regenerative Biotechnology and Humanized Pig Center (SRC), Konkuk Institute of Technology, Konkuk University, Seoul 05029, Korea.
| | - Hyunjin Yoo
- Department of Stem Cell and Regenerative Biotechnology and Humanized Pig Center (SRC), Konkuk Institute of Technology, Konkuk University, Seoul 05029, Korea.
| | - Jin-Hoi Kim
- Department of Stem Cell and Regenerative Biotechnology and Humanized Pig Center (SRC), Konkuk Institute of Technology, Konkuk University, Seoul 05029, Korea.
| | - Kwonho Hong
- Department of Stem Cell and Regenerative Biotechnology and Humanized Pig Center (SRC), Konkuk Institute of Technology, Konkuk University, Seoul 05029, Korea.
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88
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Sportelli MC, Izzi M, Volpe A, Clemente M, Picca RA, Ancona A, Lugarà PM, Palazzo G, Cioffi N. The Pros and Cons of the Use of Laser Ablation Synthesis for the Production of Silver Nano-Antimicrobials. Antibiotics (Basel) 2018; 7:E67. [PMID: 30060553 PMCID: PMC6164857 DOI: 10.3390/antibiotics7030067] [Citation(s) in RCA: 80] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Revised: 07/23/2018] [Accepted: 07/27/2018] [Indexed: 12/13/2022] Open
Abstract
Silver nanoparticles (AgNPs) are well-known for their antimicrobial effects and several groups are proposing them as active agents to fight antimicrobial resistance. A wide variety of methods is available for nanoparticle synthesis, affording a broad spectrum of chemical and physical properties. In this work, we report on AgNPs produced by laser ablation synthesis in solution (LASiS), discussing the major features of this approach. Laser ablation synthesis is one of the best candidates, as compared to wet-chemical syntheses, for preparing Ag nano-antimicrobials. In fact, this method allows the preparation of stable Ag colloids in pure solvents without using either capping and stabilizing agents or reductants. LASiS produces AgNPs, which can be more suitable for medical and food-related applications where it is important to use non-toxic chemicals and materials for humans. In addition, laser ablation allows for achieving nanoparticles with different properties according to experimental laser parameters, thus influencing antibacterial mechanisms. However, the concentration obtained by laser-generated AgNP colloids is often low, and it is hard to implement them on an industrial scale. To obtain interesting concentrations for final applications, it is necessary to exploit high-energy lasers, which are quite expensive. In this review, we discuss the pros and cons of the use of laser ablation synthesis for the production of Ag antimicrobial colloids, taking into account applications in the food packaging field.
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Affiliation(s)
- Maria Chiara Sportelli
- Dipartimento di Chimica, Università degli Studi di Bari "Aldo Moro", via E. Orabona 4, 70126 Bari, Italy.
- Institute of Photonics and nanotechnology-National Research Council (IFN-CNR), Physics Department "M. Merlin", Bari, Italy, via Amendola 173, 70126 Bari, Italy.
| | - Margherita Izzi
- Dipartimento di Chimica, Università degli Studi di Bari "Aldo Moro", via E. Orabona 4, 70126 Bari, Italy.
| | - Annalisa Volpe
- Institute of Photonics and nanotechnology-National Research Council (IFN-CNR), Physics Department "M. Merlin", Bari, Italy, via Amendola 173, 70126 Bari, Italy.
| | - Maurizio Clemente
- Dipartimento di Chimica, Università degli Studi di Bari "Aldo Moro", via E. Orabona 4, 70126 Bari, Italy.
| | - Rosaria Anna Picca
- Dipartimento di Chimica, Università degli Studi di Bari "Aldo Moro", via E. Orabona 4, 70126 Bari, Italy.
| | - Antonio Ancona
- Institute of Photonics and nanotechnology-National Research Council (IFN-CNR), Physics Department "M. Merlin", Bari, Italy, via Amendola 173, 70126 Bari, Italy.
| | - Pietro Mario Lugarà
- Institute of Photonics and nanotechnology-National Research Council (IFN-CNR), Physics Department "M. Merlin", Bari, Italy, via Amendola 173, 70126 Bari, Italy.
| | - Gerardo Palazzo
- Dipartimento di Chimica, Università degli Studi di Bari "Aldo Moro", via E. Orabona 4, 70126 Bari, Italy.
| | - Nicola Cioffi
- Dipartimento di Chimica, Università degli Studi di Bari "Aldo Moro", via E. Orabona 4, 70126 Bari, Italy.
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