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Wang Z, Li Y, Zhai J, Yang S, Sun B, Liang P. Deep learning-based Raman spectroscopy qualitative analysis algorithm: A convolutional neural network and transformer approach. Talanta 2024; 275:126138. [PMID: 38677164 DOI: 10.1016/j.talanta.2024.126138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2024] [Revised: 04/16/2024] [Accepted: 04/19/2024] [Indexed: 04/29/2024]
Abstract
Raman spectroscopy is a general and non-destructive detection technique that can obtain detailed information of the chemical structure of materials. In the past, when using chemometric algorithms to analyze the Raman spectra of mixtures, the challenges of complex spectral overlap and noise often limited the accurate identification of components. The emergence of deep learning has introduced a novel approach to qualitative analysis of mixed Raman spectra. In this paper, we propose a deep learning-based Raman spectroscopy qualitative analysis algorithm (RST) by borrowing the ideas of convolutional neural network and Transformer. By transforming the Raman spectrum into 64 word vectors, the contribution weights of each word vector to the components are obtained. For the 75 spectral data used for validation, the positive identification rate can reach 100.00 %, the recall rate can reach 99.3 %, the average identification score can reach 9.51, and it is applicable to the fields of Raman and surface-enhanced Raman spectroscopy. Furthermore, compared with traditional CNN models, RST has excellent accuracy and robustness in identifying components in complex mixtures. The model's interpretability has been enhanced, aiding in a deeper understanding of spectroscopic learning patterns for future analysis of more complex mixtures.
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Affiliation(s)
- Zilong Wang
- College of Optical and Electronic Technology, China Jiliang University, Hangzhou, 310018, China; Xiamen Palantier Technology Co., Ltd., Xiamen, 361000, China
| | - Yunfeng Li
- College of Information Engineering, China Jiliang University, Hangzhou, 310018, China
| | - Jinglei Zhai
- School of Electrical and Information Engineering, Tianjin University, No. 92, Weijin Road, Nankai District, Tianjin, 300072, China
| | - Siwei Yang
- College of Optical and Electronic Technology, China Jiliang University, Hangzhou, 310018, China
| | - Biao Sun
- School of Electrical and Information Engineering, Tianjin University, No. 92, Weijin Road, Nankai District, Tianjin, 300072, China
| | - Pei Liang
- College of Optical and Electronic Technology, China Jiliang University, Hangzhou, 310018, China; Xiamen Palantier Technology Co., Ltd., Xiamen, 361000, China.
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2
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Wei W, Wu J, Hassan MM, Jiao T, Xu Y, Ding Z, Li H, Chen Q. Generalized ratiometric surface-enhanced Raman scattering biosensor for okadaic acid in food based on Au-triggered signal amplification. Anal Chim Acta 2024; 1310:342705. [PMID: 38811142 DOI: 10.1016/j.aca.2024.342705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Revised: 04/25/2024] [Accepted: 05/08/2024] [Indexed: 05/31/2024]
Abstract
BACKGROUND Reliability and robustness have been recognized as key challenges for Surface-enhanced Raman scattering (SERS) analytical techniques. Quantifying the concentration of an analyte using a single characteristic peak from SERS has been a controversial topic because the Raman signal is susceptible to highly concentrated electromagnetic hotspots, inhomogeneity of SERS substrate, or non-standardization of measurement conditions. Ratiometric SERS strategies have been demonstrated as a promising solution to effectively balance and compensate for signal fluctuations caused by matrix heterogeneity. However, it is not easy to construct ratiometric SERS sensors with monitoring the ratio of two different signal intensities for target analysis. RESULTS An attempt has been made to develop a novel ratiometric biosensor that can be applied to detect okadaic acid (OA). Aptamer-anchored magnetic particles were first combined with gold-tagged short complementary DNA (Au-cDNA) to create heterogeneous nanostructures. When the target was present, the Au-cDNA was dissociated from nanostructures, and 4-nitrothiophenol (4-NTP) was initiated to reduce to 4-aminothiophenol (4-ATP) in the presence of hydrogen sources. The SERS ratio change of 4-NTP and 4-ATP was finally detected by AuNPs-coated film. OA was successfully quantified, and the detection limit was as low as 2.4524 ng/mL. The constructed biosensor had good stability and reproducibility with a relative standard deviation of less than 4.47%. The proposed method used gold nanoparticles as an intermediate to achieve catalytic signal amplification and subsequently increased the sensitivity of the biosensor. SIGNIFICANCE AND NOVELTY Catalytic reaction-based ratiometric SERS biosensors combine the multiple advantages of catalytic signal amplification and signal self-calibration and provide new insights into the development of stable, reproducible, and reliable SERS detection techniques. This ratiometric SERS technique offered a universal method that is anticipated to be applicable for the detection of other targets by substituting the aptamer.
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Affiliation(s)
- Wenya Wei
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, 212013, PR China
| | - Jizhong Wu
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, 212013, PR China
| | - Md Mehedi Hassan
- College of Food and Biological Engineering, Jimei University, Xiamen, 361021, PR China
| | - Tianhui Jiao
- College of Food and Biological Engineering, Jimei University, Xiamen, 361021, PR China
| | - Yi Xu
- College of Food and Biological Engineering, Jimei University, Xiamen, 361021, PR China
| | - Zhen Ding
- Changzhou Jintan Jiangnan Powder Co. LTD, Changzhou, 213200, PR China
| | - Huanhuan Li
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, 212013, PR China.
| | - Quansheng Chen
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, 212013, PR China; College of Food and Biological Engineering, Jimei University, Xiamen, 361021, PR China.
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Bruni G, Capsoni D, Pellegrini A, Altomare A, Coduri M, Ferrara C, Galinetto P, Molteni R. New Findings on the Crystal Polymorphism of Imepitoin. Molecules 2024; 29:1724. [PMID: 38675544 PMCID: PMC11052430 DOI: 10.3390/molecules29081724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Revised: 03/21/2024] [Accepted: 04/08/2024] [Indexed: 04/28/2024] Open
Abstract
Scientific and industrial reasons dictate the study of the solid state of imepitoin, a highly safe and tolerable anticonvulsant drug used in the therapy of epileptic dogs that was approved in the Europe Union in 2013. Our investigations allowed us to discover the existence of a new polymorph of imepitoin, which finds itself in a monotropic relationship with the crystalline form (polymorph I) already known and present on the market. This form (polymorph II), obtained by crystallization from xylene, remains metastable under ambient conditions for at least 1 year. Both solid forms were characterized by thermal (DSC and TGA), spectroscopic (FT-IR and Raman), microscopic (SEM and HSM), and diffractometric techniques. The thermodynamic relationship between the two polymorphs (monotropic) is such that it is not possible to study the melting of polymorph II, not even by adopting appropriate experimental strategies. Our measurements highlighted that the melting peak of imepitoin actually also includes an onset of melt decomposition. The ab initio structure solution, obtained from synchrotron X-ray powder diffraction data collected at room temperature, allowed us to determine the crystal structure of the new polymorph (II). It crystallizes in the monoclinic crystal structure, P21/c space group (#14), with a = 14.8687(6) Å, b = 7.2434(2) Å, c = 12.5592(4) Å, β = 107.5586(8)°, V = 1289.61(8) Å3, and Z = 4.
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Affiliation(s)
- Giovanna Bruni
- Department of Chemistry, Physical Chemistry Section & C.S.G.I. (Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase), University of Pavia, 27100 Pavia, Italy; (D.C.); (A.P.); (M.C.)
| | - Doretta Capsoni
- Department of Chemistry, Physical Chemistry Section & C.S.G.I. (Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase), University of Pavia, 27100 Pavia, Italy; (D.C.); (A.P.); (M.C.)
| | - Anna Pellegrini
- Department of Chemistry, Physical Chemistry Section & C.S.G.I. (Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase), University of Pavia, 27100 Pavia, Italy; (D.C.); (A.P.); (M.C.)
| | - Angela Altomare
- Institute of Crystallography—CNR, Via Amendola 122/o, 70126 Bari, Italy;
| | - Mauro Coduri
- Department of Chemistry, Physical Chemistry Section & C.S.G.I. (Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase), University of Pavia, 27100 Pavia, Italy; (D.C.); (A.P.); (M.C.)
| | - Chiara Ferrara
- Department of Materials Science, University of Milano-Bicocca, Via Cozzi 55, 20125 Milano, Italy;
| | - Pietro Galinetto
- Department of Physics, University of Pavia, Via Bassi 6, 27100 Pavia, Italy;
| | - Renato Molteni
- A.M.S.A. Anonima Materie Sintetiche Affini S.p.A., Viale Giuseppe Di Vittorio 6, 22100 Como, Italy;
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Ali MR, Bacchu MS, Ridoy DD, Mozumder PL, Hasan MN, Das S, Palash MFH, Akter S, Sakib N, Khaleque A, Chakrobortty D, Khan MZH. Development of a hematite nanotube and tyramine-based drug carrier against drug-resistant bacteria Klebsiella pneumoniae. RSC Adv 2022; 12:31497-31505. [PMID: 36382147 PMCID: PMC9631867 DOI: 10.1039/d2ra05216d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2022] [Accepted: 10/30/2022] [Indexed: 12/05/2023] Open
Abstract
In this study, hematite nanotube (HNT) and tyramine-based advanced nano-drug carriers were developed for inhibiting the growth of Klebsiella pneumoniae (K. pneumoniae). The HNT was synthesized by following the Teflon line autoclaved assisted hydrothermal process and tyramine was incorporated on the surface of the HNT to fabricate the formulated nano-drug. The nano-drug was prepared by conjugating meropenem (MP) on the surface of Tyramine-HNT and characterized using different techniques, such as scanning electron microscopy (SEM), attenuated total reflection Fourier transform infrared (ATR-FTIR), etc. Furthermore, the drug-loading efficiency and loading capacity were measured using a UV-vis spectrometer. The pH, amount of Tyr, and HNT required for drug loading were optimized. A controlled and gradual manner of pH-sensitive release profiles was found after investigating the release profile of MP from the carrier drug. The antibacterial activity of MP@Tyramine-HNT and MP was compared through the agar disc diffusion method which indicates that antibacterial properties of antibiotics are enhanced after conjugating. Surprisingly, the MP@Tyramine-HNT exhibits a minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) of K. pneumoniae lower than MP itself. These results indicate the nanocarrier can reduce the amount of MP dosed to eradicate K. pneumoniae.
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Affiliation(s)
- M R Ali
- Dept. of Chemical Engineering, Jashore University of Science and Technology Jashore 7408 Bangladesh
- Laboratory of Nano-bio and Advanced Materials Engineering (NAME), Jashore University of Science and Technology Jashore 7408 Bangladesh
| | - M S Bacchu
- Dept. of Chemical Engineering, Jashore University of Science and Technology Jashore 7408 Bangladesh
- Laboratory of Nano-bio and Advanced Materials Engineering (NAME), Jashore University of Science and Technology Jashore 7408 Bangladesh
| | - D D Ridoy
- Dept. of Chemical Engineering, Jashore University of Science and Technology Jashore 7408 Bangladesh
- Laboratory of Nano-bio and Advanced Materials Engineering (NAME), Jashore University of Science and Technology Jashore 7408 Bangladesh
| | - P L Mozumder
- Dept. of Chemical Engineering, Jashore University of Science and Technology Jashore 7408 Bangladesh
- Laboratory of Nano-bio and Advanced Materials Engineering (NAME), Jashore University of Science and Technology Jashore 7408 Bangladesh
| | - M N Hasan
- Dept. of Chemical Engineering, Jashore University of Science and Technology Jashore 7408 Bangladesh
- Laboratory of Nano-bio and Advanced Materials Engineering (NAME), Jashore University of Science and Technology Jashore 7408 Bangladesh
| | - S Das
- Dept. of Microbiology, Jashore University of Science and Technology Jashore 7408 Bangladesh
| | - M F H Palash
- Dept. of Microbiology, Jashore University of Science and Technology Jashore 7408 Bangladesh
| | - S Akter
- Dept. of Microbiology, Jashore University of Science and Technology Jashore 7408 Bangladesh
| | - N Sakib
- Dept. of Microbiology, Jashore University of Science and Technology Jashore 7408 Bangladesh
| | - A Khaleque
- Dept. of Chemical Engineering, Jashore University of Science and Technology Jashore 7408 Bangladesh
- Laboratory of Nano-bio and Advanced Materials Engineering (NAME), Jashore University of Science and Technology Jashore 7408 Bangladesh
| | - D Chakrobortty
- Genome Centre, Jashore University of Science and Technology Jashore 7408 Bangladesh
| | - M Z H Khan
- Dept. of Chemical Engineering, Jashore University of Science and Technology Jashore 7408 Bangladesh
- Laboratory of Nano-bio and Advanced Materials Engineering (NAME), Jashore University of Science and Technology Jashore 7408 Bangladesh
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Ech-Chergui AN, Kadari AS, Khan MM, Popad A, Khane Y, Guezzoul M, Leostean C, Silipas D, Barbu-Tudoran L, Abdelhalim Z, Bennabi F, Driss-Khodja K, Amrani B. Spray pyrolysis-assisted fabrication of Eu-doped ZnO thin films for antibacterial activities under visible light irradiation. CHEMICAL PAPERS 2022. [DOI: 10.1007/s11696-022-02543-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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6
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Doolan JA, Williams GT, Hilton KLF, Chaudhari R, Fossey JS, Goult BT, Hiscock JR. Advancements in antimicrobial nanoscale materials and self-assembling systems. Chem Soc Rev 2022; 51:8696-8755. [PMID: 36190355 PMCID: PMC9575517 DOI: 10.1039/d1cs00915j] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Indexed: 11/21/2022]
Abstract
Antimicrobial resistance is directly responsible for more deaths per year than either HIV/AIDS or malaria and is predicted to incur a cumulative societal financial burden of at least $100 trillion between 2014 and 2050. Already heralded as one of the greatest threats to human health, the onset of the coronavirus pandemic has accelerated the prevalence of antimicrobial resistant bacterial infections due to factors including increased global antibiotic/antimicrobial use. Thus an urgent need for novel therapeutics to combat what some have termed the 'silent pandemic' is evident. This review acts as a repository of research and an overview of the novel therapeutic strategies being developed to overcome antimicrobial resistance, with a focus on self-assembling systems and nanoscale materials. The fundamental mechanisms of action, as well as the key advantages and disadvantages of each system are discussed, and attention is drawn to key examples within each field. As a result, this review provides a guide to the further design and development of antimicrobial systems, and outlines the interdisciplinary techniques required to translate this fundamental research towards the clinic.
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Affiliation(s)
- Jack A Doolan
- School of Chemistry and Forensic Science, University of Kent, Canterbury, Kent CT2 7NH, UK.
- School of Biosciences, University of Kent, Canterbury, Kent CT2 7NJ, UK.
| | - George T Williams
- School of Chemistry, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK.
| | - Kira L F Hilton
- School of Chemistry and Forensic Science, University of Kent, Canterbury, Kent CT2 7NH, UK.
| | - Rajas Chaudhari
- School of Chemistry and Forensic Science, University of Kent, Canterbury, Kent CT2 7NH, UK.
| | - John S Fossey
- School of Chemistry, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK.
| | - Benjamin T Goult
- School of Biosciences, University of Kent, Canterbury, Kent CT2 7NJ, UK.
| | - Jennifer R Hiscock
- School of Chemistry and Forensic Science, University of Kent, Canterbury, Kent CT2 7NH, UK.
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7
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Cyanobacteria: miniature factories for green synthesis of metallic nanomaterials: a review. Biometals 2022; 35:653-674. [PMID: 35716270 DOI: 10.1007/s10534-022-00405-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Accepted: 05/26/2022] [Indexed: 11/02/2022]
Abstract
Nanotechnology is one of the most promising and advanced disciplines of science that deals with synthesis, characterization and applications of different types of Nanomaterials (NMs) viz. nanospheres, nanoparticles, nanotubes, nanorods, nanowires, nanocomposites, nanoalloys, carbon dots and quantum dots. These nanosized materials exhibit different physicochemical characteristics and act as a whole unit during its transport. The unique characteristics and vast applications of NMs in diverse fields viz. electronics, agriculture, biology and medicine have created huge demand of different type of NMs. Conventionally physical and chemical methods were adopted to manufacture NMs which are expensive and end up with hazardous by-products. Therefore, green synthesis exploiting biological resources viz. algae, bacteria, fungi and plants emerged as a better and promising alternative due to its cost effective and ecofriendly approach and referred as nanobiotechnology. Among various living organisms, cyanobacteria have proved one of the most favourable bioresources for NMs biosynthesis due to their survival in diverse econiches including metal and metalloid contaminated sites and capability to withstand high levels of metals. Biosynthesis of metallic NMs is accomplished through bioreduction of respective metal salts by various capping agents viz. alkaloids, pigments, polysaccharides, steroids, enzymes and peptides present in the biological systems. Advancement in the field of Nanobiotechnology has produced large number of diverse NMs from cyanobacteria which have been used as antimicrobial agents against Gram positive and negative human pathogens, anticancer agents, luminescent nanoprobes for imaging of cells, antifungal agents against plant pathogens, nanocatalyst and semiconductor quantum dots in industries and in bioremediation in toxic pollutant dyes. In the present communication, we have reviewed cyanobacteria mediated biosynthesis of NMs and their applications in various fields.
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8
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Raha S, Ahmaruzzaman M. ZnO nanostructured materials and their potential applications: progress, challenges and perspectives. NANOSCALE ADVANCES 2022; 4:1868-1925. [PMID: 36133407 PMCID: PMC9419838 DOI: 10.1039/d1na00880c] [Citation(s) in RCA: 59] [Impact Index Per Article: 29.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Accepted: 03/07/2022] [Indexed: 05/22/2023]
Abstract
Extensive research in nanotechnology has been conducted to investigate new behaviours and properties of materials with nanoscale dimensions. ZnO NPs owing to their distinct physical and chemical properties have gained considerable importance and are hence investigated to a detailed degree for exploitation of these properties. This communication, at the outset, elaborates the various chemical methods of preparation of ZnO NPs, viz., the mechanochemical process, controlled precipitation, sol-gel method, vapour transport method, solvothermal and hydrothermal methods, and methods using emulsion and micro-emulsion environments. The paper further describes the green methods employing the use of plant extracts, in particular, for the synthesis of ZnO NPs. The modifications of ZnO with organic (carboxylic acid, silanes) and inorganic (metal oxides) compounds and polymer matrices have then been described. The multitudinous applications of ZnO NPs across a variety of fields such as the rubber industry, pharmaceutical industry, cosmetics, textile industry, opto-electronics and agriculture have been presented. Elaborative narratives on the photocatalytic and a variety of biomedical applications of ZnO have also been included. The ecotoxic impacts of ZnO NPs have additionally been briefly highlighted. Finally, efforts have been made to examine the current challenges and future scope of the synthetic modes and applications of ZnO NPs.
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Affiliation(s)
- Sauvik Raha
- Department of Chemistry, National Institute of Technology Silchar 788010 Assam India
| | - Md Ahmaruzzaman
- Department of Chemistry, National Institute of Technology Silchar 788010 Assam India
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9
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Darvishi S, Tavakoli S, Kharaziha M, Girault HH, Kaminski CF, Mela I. Advances in the Sensing and Treatment of Wound Biofilms. ANGEWANDTE CHEMIE (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 134:e202112218. [PMID: 38505642 PMCID: PMC10946914 DOI: 10.1002/ange.202112218] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Indexed: 03/21/2024]
Abstract
Wound biofilms represent a particularly challenging problem in modern medicine. They are increasingly antibiotic resistant and can prevent the healing of chronic wounds. However, current treatment and diagnostic options are hampered by the complexity of the biofilm environment. In this review, we present new chemical avenues in biofilm sensors and new materials to treat wound biofilms, offering promise for better detection, chemical specificity, and biocompatibility. We briefly discuss existing methods for biofilm detection and focus on novel, sensor-based approaches that show promise for early, accurate detection of biofilm formation on wound sites and that can be translated to point-of-care settings. We then discuss technologies inspired by new materials for efficient biofilm eradication. We focus on ultrasound-induced microbubbles and nanomaterials that can both penetrate the biofilm and simultaneously carry active antimicrobials and discuss the benefits of those approaches in comparison to conventional methods.
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Affiliation(s)
- Sorour Darvishi
- Department of Chemical Engineering and BiotechnologyUniversity of CambridgePhilippa Fawcett DriveCambridgeCB3 0ASUK
- Department of Chemistry and Chemical EngineeringÉcole Polytechnique Fédérale de Lausanne1951SionSwitzerland
| | - Shima Tavakoli
- Department of Chemistry-Ångstrom LaboratoryUppsala UniversitySE75121UppsalaSweden
| | - Mahshid Kharaziha
- Department of Materials EngineeringIsfahan University of TechnologyIsfahan84156-83111Iran
| | - Hubert H. Girault
- Department of Chemistry and Chemical EngineeringÉcole Polytechnique Fédérale de Lausanne1951SionSwitzerland
| | - Clemens F. Kaminski
- Department of Chemical Engineering and BiotechnologyUniversity of CambridgePhilippa Fawcett DriveCambridgeCB3 0ASUK
| | - Ioanna Mela
- Department of Chemical Engineering and BiotechnologyUniversity of CambridgePhilippa Fawcett DriveCambridgeCB3 0ASUK
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10
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Hosseini B, Behbahani M, Dini G, Mohabatkar H, Keyhanfar M. Investigating the anti-streptococcal biofilm effect of ssDNA aptamer-silver nanoparticles complex on a titanium-based substrate. RSC Adv 2022; 12:24876-24886. [PMID: 36276899 PMCID: PMC9475424 DOI: 10.1039/d2ra04112j] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2022] [Accepted: 08/17/2022] [Indexed: 11/29/2022] Open
Abstract
Streptococcus mutans is a commensal and opportunistic pathogen that causes several diseases by forming a biofilm in humans and animals in many areas such as nasopharyngeal, cardiac valves, lungs, and oral cavity. Biofilms are very important in prosthetic infections associated with medical implants. The use of nanoparticles is one of the evolving fields in biofilm targeting. Silver nanoparticles can be used for biofilm targeting due to their inherent antimicrobial properties. Hybridization of nanoparticles with small molecules increases their biological properties and makes them multifunctional. The present investigation aimed to design an appropriate silver nanoparticles–aptamer complex that binds to the surface receptors of streptococcal strains. For this reason, silver nanoparticles with particle sizes in a range of 50 to 70 nm were synthesized and connected to a designed aptamer with a streptavidin–biotin linker. Then, the effect of the complex was investigated on the S. mutans biofilm formed on the surface of a medical-grade titanium substrate. The silver nanoparticles–aptamer complex at a concentration of 100 μg mL−1 after 48 h inhibited 43% of the biofilm formation and degraded 63% of the formed biofilm. Also, the cell availability reached 96% and the complex was stable in cell medium culture for 360 min. It was concluded that this complex could be a good candidate for removing the formed biofilms on the surface of titanium implants. Silver nanoparticles attached to the specific aptamer forStreptococcus mutans, can significantly remove the biofilm of this bacterium attached to the surface of the titanium implant.![]()
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Affiliation(s)
- Barumand Hosseini
- Department of Biotechnology, Faculty of Biological Science and Technology, University of Isfahan, Isfahan 81746-73441, Iran
| | - Mandana Behbahani
- Department of Biotechnology, Faculty of Biological Science and Technology, University of Isfahan, Isfahan 81746-73441, Iran
| | - Ghasem Dini
- Department of Nanotechnology, Faculty of Chemistry, University of Isfahan, Isfahan 81746-73441, Iran
| | - Hassan Mohabatkar
- Department of Biotechnology, Faculty of Biological Science and Technology, University of Isfahan, Isfahan 81746-73441, Iran
| | - Mehrnaz Keyhanfar
- Department of Biotechnology, Faculty of Biological Science and Technology, University of Isfahan, Isfahan 81746-73441, Iran
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11
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Adampourezare M, Hasanzadeh M, Seidi F. Optical bio-sensing of DNA methylation analysis: an overview of recent progress and future prospects. RSC Adv 2022; 12:25786-25806. [PMID: 36199327 PMCID: PMC9460980 DOI: 10.1039/d2ra03630d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2022] [Accepted: 09/03/2022] [Indexed: 12/02/2022] Open
Abstract
DNA methylation as one of the most important epigenetic modifications has a critical role in regulating gene expression and drug resistance in treating diseases such as cancer. Therefore, the detection of DNA methylation in the early stages of cancer plays an essential role in disease diagnosis. The majority of routine methods to detect DNA methylation are very tedious and costly. Therefore, designing easy and sensitive methods to detect DNA methylation directly and without the need for molecular methods is a hot topic issue in bioscience. Here we provide an overview on the optical biosensors (including fluorescence, FRET, SERs, colorimetric) that have been applied to detect the DNA methylation. In addition, various types of labeled and label-free reactions along with the application of molecular methods and optical biosensors have been surveyed. Also, the effect of nanomaterials on the sensitivity of detection methods is discussed. Furthermore, a comprehensive overview of the advantages and disadvantages of each method are provided. Finally, the use of microfluidic devices in the evaluation of DNA methylation and DNA damage analysis based on smartphone detection has been discussed. Here, we provide an overview on the optical biosensors (including fluorescence, FRET, SERs, colorimetric) that have been applied to detect the DNA methylation.![]()
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Affiliation(s)
- Mina Adampourezare
- Department of Biology, Faculty of Natural Science, University of Tabriz, Tabriz, Iran
- Pharmaceutical Analysis Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohammad Hasanzadeh
- Pharmaceutical Analysis Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
- Nutrition Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Farzad Seidi
- Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forest Resources and International Innovation Center for Forest Chemicals and Materials, Nanjing Forestry University, Nanjing 210037, China
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12
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Darvishi S, Tavakoli S, Kharaziha M, Girault HH, Kaminski CF, Mela I. Advances in the Sensing and Treatment of Wound Biofilms. Angew Chem Int Ed Engl 2021; 61:e202112218. [PMID: 34806284 PMCID: PMC9303468 DOI: 10.1002/anie.202112218] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Indexed: 12/02/2022]
Abstract
Wound biofilms represent a particularly challenging problem in modern medicine. They are increasingly antibiotic resistant and can prevent the healing of chronic wounds. However, current treatment and diagnostic options are hampered by the complexity of the biofilm environment. In this review, we present new chemical avenues in biofilm sensors and new materials to treat wound biofilms, offering promise for better detection, chemical specificity, and biocompatibility. We briefly discuss existing methods for biofilm detection and focus on novel, sensor‐based approaches that show promise for early, accurate detection of biofilm formation on wound sites and that can be translated to point‐of‐care settings. We then discuss technologies inspired by new materials for efficient biofilm eradication. We focus on ultrasound‐induced microbubbles and nanomaterials that can both penetrate the biofilm and simultaneously carry active antimicrobials and discuss the benefits of those approaches in comparison to conventional methods.
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Affiliation(s)
- Sorour Darvishi
- EPFL: Ecole Polytechnique Federale de Lausanne, Chemistry and Chemical Engineering, SWITZERLAND
| | | | - Mahshid Kharaziha
- Isfahan University of Technology, Department of Materials Engineering, IRAN (ISLAMIC REPUBLIC OF)
| | - Hubert H Girault
- EPFL: Ecole Polytechnique Federale de Lausanne, Chemistry and Chemical Engineering, SWITZERLAND
| | - Clemens F Kaminski
- Cambridge University: University of Cambridge, Chemical Engineering and Biotechnology, Department of Chemical Engineering and Biotechnolo, Philippa Fawcett Drive, Cambridge, CB3 0AS, Cambridge, UNITED KINGDOM
| | - Ioanna Mela
- University of Cambridge, Chemical Engineering and Biotechnology, Philippa Fawcett Drive, CB3 0AS, Cambridge, UNITED KINGDOM
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13
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Hahm E, Jo A, Kang EJ, Bock S, Pham XH, Chang H, Jun BH. Ultra-Fine Control of Silica Shell Thickness on Silver Nanoparticle-Assembled Structures. Int J Mol Sci 2021; 22:11983. [PMID: 34769413 PMCID: PMC8584519 DOI: 10.3390/ijms222111983] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 10/31/2021] [Accepted: 11/01/2021] [Indexed: 11/26/2022] Open
Abstract
To study the distance-dependent electromagnetic field effects related to the enhancement and quenching mechanism of surface-enhanced Raman scattering (SERS) or fluorescence, it is essential to precisely control the distance from the surface of the metal nanoparticle (NP) to the target molecule by using a dielectric layer (e.g., SiO2, TiO2, and Al2O3). However, precisely controlling the thickness of this dielectric layer is challenging. Herein, we present a facile approach to control the thickness of the silica shell on silver nanoparticle-assembled silica nanocomposites, SiO2@Ag NPs, by controlling the number of reacting SiO2@Ag NPs and the silica precursor. Uniform silica shells with thicknesses in the range 5-40 nm were successfully fabricated. The proposed method for creating a homogeneous, precise, and fine silica coating on nanocomposites can potentially contribute to a comprehensive understanding of the distance-dependent electromagnetic field effects and optical properties of metal NPs.
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Affiliation(s)
- Eunil Hahm
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 05029, Korea; (E.H.); (A.J.); (E.J.K.); (S.B.); (X.-H.P.)
| | - Ahla Jo
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 05029, Korea; (E.H.); (A.J.); (E.J.K.); (S.B.); (X.-H.P.)
| | - Eun Ji Kang
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 05029, Korea; (E.H.); (A.J.); (E.J.K.); (S.B.); (X.-H.P.)
| | - Sungje Bock
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 05029, Korea; (E.H.); (A.J.); (E.J.K.); (S.B.); (X.-H.P.)
| | - Xuan-Hung Pham
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 05029, Korea; (E.H.); (A.J.); (E.J.K.); (S.B.); (X.-H.P.)
| | - Hyejin Chang
- Division of Science Education, Kangwon National University, Chuncheon 24341, Korea
| | - Bong-Hyun Jun
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 05029, Korea; (E.H.); (A.J.); (E.J.K.); (S.B.); (X.-H.P.)
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14
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Alabresm A, Chandler SL, Benicewicz BC, Decho AW. Nanotargeting of Resistant Infections with a Special Emphasis on the Biofilm Landscape. Bioconjug Chem 2021; 32:1411-1430. [PMID: 34319073 PMCID: PMC8527872 DOI: 10.1021/acs.bioconjchem.1c00116] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Bacterial resistance to antimicrobial compounds is a growing concern in medical and public health circles. Overcoming the adaptable and duplicative resistance mechanisms of bacteria requires chemistry-based approaches. Engineered nanoparticles (NPs) now offer unique advantages toward this effort. However, most in situ infections (in humans) occur as attached biofilms enveloped in a protective surrounding matrix of extracellular polymers, where survival of microbial cells is enhanced. This presents special considerations in the design and deployment of antimicrobials. Here, we review recent efforts to combat resistant bacterial strains using NPs and, then, explore how NP surfaces may be specifically engineered to enhance the potency and delivery of antimicrobial compounds. Special NP-engineering challenges in the design of NPs must be overcome to penetrate the inherent protective barriers of the biofilm and to successfully deliver antimicrobials to bacterial cells. Future challenges are discussed in the development of new antibiotics and their mechanisms of action and targeted delivery via NPs.
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Affiliation(s)
- Amjed Alabresm
- Department of Environmental Health Sciences, University of South Carolina, Columbia, South Carolina 29208, United States
- Department of Biological Development of Shatt Al-Arab & N. Arabian Gulf, Marine Science Centre, University of Basrah, Basrah, Iraq
| | - Savannah L Chandler
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States
| | - Brian C Benicewicz
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States
- USC NanoCenter, University of South Carolina, Columbia, South Carolina 29208, United States
| | - Alan W Decho
- Department of Environmental Health Sciences, University of South Carolina, Columbia, South Carolina 29208, United States
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15
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Seguí P, Aguilera-Correa JJ, Domínguez-Jurado E, Sánchez-López CM, Pérez-Tanoira R, Ocaña AV, Castro-Osma JA, Esteban J, Marcilla A, Alonso-Moreno C, Pérez-Martínez FC, Molina-Alarcón M. A novel bis(pyrazolyl)methane compound as a potential agent against Gram-positive bacteria. Sci Rep 2021; 11:16306. [PMID: 34381091 PMCID: PMC8357914 DOI: 10.1038/s41598-021-95609-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Accepted: 07/27/2021] [Indexed: 02/05/2023] Open
Abstract
This study was designed to propose alternative therapeutic compounds to fight against bacterial pathogens. Thus, a library of nitrogen-based compounds bis(triazolyl)methane (1T–7T) and bis(pyrazolyl)methane (1P–11P) was synthesised following previously reported methodologies and their antibacterial activity was tested using the collection strains of Staphylococcus aureus, Enterococcus faecalis, Escherichia coli, and Pseudomonas aeruginosa. Moreover, the novel compound 2P was fully characterized by IR, UV–Vis and NMR spectroscopy. To evaluate antibacterial activity, minimal inhibitory concentrations (MICs), minimal bactericidal concentrations (MBCs), minimum biofilm inhibitory concentrations (MBICs), and minimum biofilm eradication concentrations (MBECs) assays were carried out at different concentrations (2–2000 µg/mL). The MTT assay and Resazurin viability assays were performed in both human liver carcinoma HepG2 and human colorectal adenocarcinoma Caco-2 cell lines at 48 h. Of all the synthesised compounds, 2P had an inhibitory effect on Gram-positive strains, especially against S. aureus. The MIC and MBC of 2P were 62.5 and 2000 µg/mL against S. aureus, and 250 and 2000 µg/mL against E. faecalis, respectively. However, these values were > 2000 µg/mL against E. coli and P. aeruginosa. In addition, the MBICs and MBECs of 2P against S. aureus were 125 and > 2000 µg/mL, respectively, whereas these values were > 2000 µg/mL against E. faecalis, E. coli, and P. aeruginosa. On the other hand, concentrations up to 250 µg/mL of 2P were non-toxic doses for eukaryotic cell cultures. Thus, according to the obtained results, the 2P nitrogen-based compound showed a promising anti-Gram-positive effect (especially against S. aureus) both on planktonic state and biofilm, at non-toxic concentrations.
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Affiliation(s)
- Pedro Seguí
- Department of Otorhinolaryngology, Complejo Hospitalario Universitario, 02006, Albacete, Spain.,Instituto de Investigación en Discapacidades Neurológicas (IDINE), University of Castilla-La Mancha, 02001, Albacete, Spain
| | | | - Elena Domínguez-Jurado
- NanoCRIB Unit, Centro Regional de Investigaciones Biomédicas, 02008, Albacete, Spain.,School of Pharmacy, University of Castilla-La Mancha, 02008, Albacete, Spain
| | - Christian M Sánchez-López
- Department of Farmàcia i Tecnologia Farmacèutica i Parasitologia, University of Valencia, Burjassot, 46100, Valencia, Spain.,Joint Research Unit on Endocrinology, Nutrition and Clinical Dietetics, Health Research Institute La Fe-Universitat de València, 46026, Valencia, Spain
| | - Ramón Pérez-Tanoira
- Clinical Microbiology Department, Hospital Universitario Príncipe de Asturias, Madrid, Spain.,Biomedicine and Biotechnology Department, School of Medicine, University of Alcalá de Henares, Madrid, Spain
| | - Ana V Ocaña
- Instituto de Investigación en Discapacidades Neurológicas (IDINE), University of Castilla-La Mancha, 02001, Albacete, Spain
| | - José A Castro-Osma
- NanoCRIB Unit, Centro Regional de Investigaciones Biomédicas, 02008, Albacete, Spain.,School of Pharmacy, University of Castilla-La Mancha, 02008, Albacete, Spain
| | - Jaime Esteban
- Clinical Microbiology Department, IIS-Fundacion Jimenez Diaz-UAM, 28040, Madrid, Spain
| | - Antonio Marcilla
- Department of Farmàcia i Tecnologia Farmacèutica i Parasitologia, University of Valencia, Burjassot, 46100, Valencia, Spain.,Joint Research Unit on Endocrinology, Nutrition and Clinical Dietetics, Health Research Institute La Fe-Universitat de València, 46026, Valencia, Spain
| | - Carlos Alonso-Moreno
- NanoCRIB Unit, Centro Regional de Investigaciones Biomédicas, 02008, Albacete, Spain.,School of Pharmacy, University of Castilla-La Mancha, 02008, Albacete, Spain
| | - Francisco C Pérez-Martínez
- Instituto de Investigación en Discapacidades Neurológicas (IDINE), University of Castilla-La Mancha, 02001, Albacete, Spain.
| | - Milagros Molina-Alarcón
- Instituto de Investigación en Discapacidades Neurológicas (IDINE), University of Castilla-La Mancha, 02001, Albacete, Spain.,Department of Nursing, University of Castilla-La Mancha, 02071, Albacete, Spain
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16
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Senevirathne SWMAI, Hasan J, Mathew A, Woodruff M, Yarlagadda PKDV. Bactericidal efficiency of micro- and nanostructured surfaces: a critical perspective. RSC Adv 2021; 11:1883-1900. [PMID: 35424086 PMCID: PMC8693530 DOI: 10.1039/d0ra08878a] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Accepted: 12/12/2020] [Indexed: 12/21/2022] Open
Abstract
Micro/nanostructured surfaces (MNSS) have shown the ability to inactivate bacterial cells by physical means. An enormous amount of research has been conducted in this area over the past decade. Here, we review the various surface factors that affect the bactericidal efficiency. For example, surface hydrophobicity of the substrate has been accepted to be influential on the bactericidal effect of the surface, but a review of the literature suggests that the influence of hydrophobicity differs with the bacterial species. Also, various bacterial viability quantification methods on MNSS are critically reviewed for their suitability for the purpose, and limitations of currently used protocols are discussed. Presently used static bacterial viability assays do not represent the conditions of which those surfaces could be applied. Such application conditions do have overlaying fluid flow, and bacterial behaviours are drastically different under flow conditions compared to under static conditions. Hence, it is proposed that the bactericidal effect should be assessed under relevant fluid flow conditions with factors such as shear stress and flowrate given due significance. This review will provide a range of opportunities for future research in design and engineering of micro/nanostructured surfaces with varying experimental conditions.
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Affiliation(s)
- S W M A I Senevirathne
- Science and Engineering Faculty, Queensland University of Technology (QUT) Brisbane Qld 4000 Australia
- Institute of Health and Biomedical Innovations 60 Musk Ave. Kelvin Grove Qld 4059 Australia
| | - J Hasan
- Science and Engineering Faculty, Queensland University of Technology (QUT) Brisbane Qld 4000 Australia
- Institute of Health and Biomedical Innovations 60 Musk Ave. Kelvin Grove Qld 4059 Australia
| | - A Mathew
- Science and Engineering Faculty, Queensland University of Technology (QUT) Brisbane Qld 4000 Australia
- Institute of Health and Biomedical Innovations 60 Musk Ave. Kelvin Grove Qld 4059 Australia
| | - M Woodruff
- Science and Engineering Faculty, Queensland University of Technology (QUT) Brisbane Qld 4000 Australia
- Institute of Health and Biomedical Innovations 60 Musk Ave. Kelvin Grove Qld 4059 Australia
| | - P K D V Yarlagadda
- Science and Engineering Faculty, Queensland University of Technology (QUT) Brisbane Qld 4000 Australia
- Institute of Health and Biomedical Innovations 60 Musk Ave. Kelvin Grove Qld 4059 Australia
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17
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Chang H, Rho WY, Son BS, Kim J, Lee SH, Jeong DH, Jun BH. Plasmonic Nanoparticles: Basics to Applications (I). ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2021; 1309:133-159. [PMID: 33782871 DOI: 10.1007/978-981-33-6158-4_6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
This review presents the main characteristics of metal nanoparticles (NPs), especially consisting of noble metal such as Au and Ag, and brief information on their synthesis methods. The physical and chemical properties of the metal NPs are described, with a particular focus on the optically variable properties (surface plasmon resonance based properties) and surface-enhanced Raman scattering of plasmonic materials. In addition, this chapter covers ways to achieve advances by utilizing their properties in the biological studies and medical fields (such as imaging, diagnostics, and therapeutics). These descriptions will help researchers new to nanomaterials for biomedical diagnosis to understand easily the related knowledge and also will help researchers involved in the biomedical field to learn about the latest research trends.
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Affiliation(s)
- Hyejin Chang
- Division of Science Education, Kangwon National University, Chuncheon, Republic of Korea
| | - Won-Yeop Rho
- School of International Engineering and Science, Jeonbuk National University, Jeonju, Republic of Korea
| | - Byung Sung Son
- Department of Bioscience and Biotechnology, Konkuk University, Seoul, South Korea
| | - Jaehi Kim
- Department of Bioscience and Biotechnology, Konkuk University, Seoul, South Korea
| | - Sang Hun Lee
- Department of Chemical and Biological Engineering, Hanbat National University, Daejeon, Republic of Korea
| | - Dae Hong Jeong
- Department of Chemistry Education, Seoul National University, Seoul, Republic of Korea
| | - Bong-Hyun Jun
- Department of Bioscience and Biotechnology, Konkuk University, Seoul, South Korea.
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18
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Mehanna MM, Mneimneh AT, Abed El Jalil K. Levofloxacin-loaded naturally occurring monoterpene-based nanoemulgel: a feasible efficient system to circumvent MRSA ocular infections. Drug Dev Ind Pharm 2020; 46:1787-1799. [PMID: 32896171 DOI: 10.1080/03639045.2020.1821048] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Staphylococcus aureus is a leading cause of ocular keratitis worldwide, and the upsurge of Methicillin-resistant Staphylococcus Aureus (MRSA) strains necessitated the development of new antimicrobial agents. D-limonene is the major constituent of oil extracted from citrus peel, which has been utilized for its gastroprotective, antifungal, antitumor, and antibacterial effects. The present study aimed to develop an effective in-situ ocular limonene-based nanoemulgel to enhance the efficacy of fluoroquinolones against MRSA associated ocular biofilm infection. The nanoemulsion composed of limonene, Tween®80, propylene glycol at a ratio of 5:4:1 loaded with levofloxacin. The formulated levofloxacin-loaded limonene-based nanoemulsion physiochemical properties namely; droplet size, polydispersity index, zeta potential, and in-vitro drug release were studied and stability over three months was assessed. Furthermore, in-vitro antimicrobial susceptibility was investigated on biofilm-forming MRSA strain through kinetics of killing and biofilm assay. The in-situ nanoemulgel ocular irritation was studied by HET-CAM test. The results demonstrated that levofloxacin-loaded limonene-based nanoemulsion had a particle size of 119 ± 0.321 nm with improved eradicating efficacy of MRSA biofilm, where the MIC of the loaded nanoemulgel was 3.12 mg/ml significantly less than that of drug alone (6.25 mg/ml). HET-CAM test showed no signs of hemorrhage, coagulation, or lysis for the loaded nanoemulgel same as sodium chloride solution (negative control) where its irritation score was zero compared to 9.87 for the positive irritant group (1%w/v sodium lauryl sulfate). In conclusion, the current investigation provided a strong foundation for further studies of limonene nanoemulgel as a potential complementary therapeutic agent against resistant bacterial strains.
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Affiliation(s)
- Mohammed M Mehanna
- Pharmaceutical Technology Department, Faculty of Pharmacy, Beirut Arab University, Beirut, Lebanon.,Industrial Pharmacy Department, Faculty of Pharmacy, Alexandria University, Alexandria, Egypt
| | - Amina Tarek Mneimneh
- Pharmaceutical Technology Department, Faculty of Pharmacy, Beirut Arab University, Beirut, Lebanon
| | - Khaled Abed El Jalil
- Pharmaceutical Sciences Department, Faculty of Pharmacy, Beirut Arab University, Beirut, Lebanon
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19
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Abo-Neima SE, Motaweh HA, Elsehly EM. Antimicrobial activity of functionalised carbon nanotubes against pathogenic microorganisms. IET Nanobiotechnol 2020; 14:457-464. [PMID: 32755954 DOI: 10.1049/iet-nbt.2019.0342] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Carbon nanotubes represent one of the best examples of novel nanostructures, exhibit a range of extraordinary physical properties, strong antimicrobial activity and can pierce bacterial cell walls. This investigation handles the antimicrobial activity of functionalised multiwall carbon nanotubes (F-MWNTs) as an alternative antimicrobial material compared to the commercial antibiotics. Antibacterial activities of F-MWNTs are investigated through two different kinds of bacteria, E. coli and S. aureus. The results demonstrate that the best concentration of F-MWNTs for the maximum inhibition and antibacterial functionality is 80 and 60 μg/ml for E. coli and S. aureus, respectively. The transmission electron microscope reveals the morphological changes damage mechanism for the cellular reliability on these microorganisms. F-MWNTs are capable of biologically isolating the cell from their microenvironment, contributing to the development of toxic substances and placing the cell under oxidative stress leading to cellular death. The efficiency of F-MWNTs is compared with the common antibiotics and shows an enhancement in the inhibitory effect with percentages reaches 85%. To account for the bactericidal performance of F-MWNTs towards these pathogens, the dielectric conductivity and the bacterial growth measurements are conducted. The present study endeavour that F-MWNTs could be exploited in biomedical devices and altering systems for hospital and industrial cleaning applications.
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Affiliation(s)
- Sahar E Abo-Neima
- Physics Department, Damanhour University, El Gomhoureya St, Damanhour, El Beheira, Egypt
| | - Hussein A Motaweh
- Physics Department, Damanhour University, El Gomhoureya St, Damanhour, El Beheira, Egypt
| | - Emad M Elsehly
- Physics Department, Damanhour University, El Gomhoureya St, Damanhour, El Beheira, Egypt.
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20
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Silver Nano/Microparticles: Modification and Applications 2.0. Int J Mol Sci 2020; 21:ijms21124395. [PMID: 32575707 PMCID: PMC7349777 DOI: 10.3390/ijms21124395] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Accepted: 06/19/2020] [Indexed: 01/18/2023] Open
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21
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Morteza M, Roya S, Hamed H, Amir Z, Abolfazl A. Synthesis and evaluation of polymeric micelle containing piperacillin/tazobactam for enhanced antibacterial activity. Drug Deliv 2020; 26:1292-1299. [PMID: 31797692 PMCID: PMC6896493 DOI: 10.1080/10717544.2019.1693708] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Infections caused by multidrug-resistant bacteria such as P. aeruginosa are important therapeutic complications. Piperacillin/Tazobactam is considered a safe antimicrobial agent. But we should not ignore the prevalence of resistant strains to this drug. In this work, a new polymeric micelle composed of Piperacillin/Tazobactam-loaded Poly (ethylene glycol) methyl ether-block-poly (lactide-co-glycolide) (PLGA-PEG) was developed to improve the antimicrobial performance of P/T. The SEM and TEM studies of PLGA-PEG micelle showed, semi-spherical morphology with a mean diameter of below 30 nm. Zeta potential results indicated that the surface charge of PLGA-PEG micelle was −2.98 mV, while after encapsulation of P/T, the surface charge decreases to −4.13 mV. Clinical strains of P. aeruginosa were isolated and their resistance pattern against different antibiotics was evaluated. The MIC of free and P/T -Loaded PLGA-PEG micelles was determined. Also, the effect of free or P/T micelle against minimal biofilm eradication concentration and motility inhibition was evaluated. The bacterial isolates were resistant to most common antibiotics. The MIC of the free drug form and micelle form ranged from 4 to 512 µg/ml and 2 to 256 µg/ml, respectively. Generally, micelle showed more effective antibiofilm activities, inhibition of bacterial motility and reducing the MIC than that free drug form.
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Affiliation(s)
- Milani Morteza
- Infectious and Tropical Diseases Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.,Department of Medical Nanotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Salehi Roya
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.,Department of Medical Nanotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Hamishehkar Hamed
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Zarebkohan Amir
- Department of Medical Nanotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Akbarzadeh Abolfazl
- Department of Medical Nanotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
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22
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Viswanathan K, Bharathi BD, Karuppannan C, Sanjeevi T, Nithiyanantham M, Arul Kumar K, Murugaiyan LMP, Gopal D, Muthusamy R. Studies on antimicrobial and wound healing applications of gauze coated with CHX-Ag hybrid NPs. IET Nanobiotechnol 2020; 14:14-18. [PMID: 31935672 PMCID: PMC8676338 DOI: 10.1049/iet-nbt.2019.0187] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
In this study, chlorhexidine (CHX)-silver (Ag) hybrid nanoparticles (NPs) coated gauze was developed, and their bactericidal effect and in vivo wound healing capacities were tested. A new method was developed to synthesise the NPs, wherein Ag nitrate mixed with sodium (Na) metaphosphate and reduced using Na borohydride. Finally, CHX digluconate was added to form the hybrid NPs. To study the antibacterial efficacy of particles, the minimal inhibition concentration and biofilm degradation capacity against Gram-positive and Gram-negative bacteria was studied using Escherichia coli and Staphylococcus aureus. The results indicated that the NP inhibited biofilm formation and was bactericidal as well. The gauze was doped with NPs, and its wound healing property was evaluated using mice model. Results indicated that the wound healing process was fastened by using the NPs gauze doped with NPs without the administration of antibiotics.
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Affiliation(s)
- Kaliyaperumal Viswanathan
- Translational Research Platform for Veterinary Biologicals, Centre for Animal Health Studies (CAHS), Tamil Nadu Veterinary and Animal Sciences University (TANUVAS), Chennai 600 051, India.
| | - Babu Diviya Bharathi
- Translational Research Platform for Veterinary Biologicals, Centre for Animal Health Studies (CAHS), Tamil Nadu Veterinary and Animal Sciences University (TANUVAS), Chennai 600 051, India
| | - Chitra Karuppannan
- Translational Research Platform for Veterinary Biologicals, Centre for Animal Health Studies (CAHS), Tamil Nadu Veterinary and Animal Sciences University (TANUVAS), Chennai 600 051, India
| | - Thiyagarajan Sanjeevi
- Translational Research Platform for Veterinary Biologicals, Centre for Animal Health Studies (CAHS), Tamil Nadu Veterinary and Animal Sciences University (TANUVAS), Chennai 600 051, India
| | - Madan Nithiyanantham
- Translational Research Platform for Veterinary Biologicals, Centre for Animal Health Studies (CAHS), Tamil Nadu Veterinary and Animal Sciences University (TANUVAS), Chennai 600 051, India
| | - Kandasamy Arul Kumar
- Translational Research Platform for Veterinary Biologicals, Centre for Animal Health Studies (CAHS), Tamil Nadu Veterinary and Animal Sciences University (TANUVAS), Chennai 600 051, India
| | - Latha Mala Priyadhershini Murugaiyan
- Vaccine Research Centre-bacterial Vaccine (VRC-BV), Centre for Animal Health Studies (CAHS), Tamil Nadu Veterinary and Animal Sciences University (TANUVAS), Chennai 600 051, India
| | - Dhinakarraj Gopal
- Centre for Animal Health Studies (CAHS), Tamil Nadu Veterinary and Animal Sciences University (TANUVAS), Chennai 600 051, India
| | - Raman Muthusamy
- Translational Research Platform for Veterinary Biologicals, Centre for Animal Health Studies (CAHS), Tamil Nadu Veterinary and Animal Sciences University (TANUVAS), Chennai 600 051, India
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23
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Hamed AA, Kabary H, Khedr M, Emam AN. Antibiofilm, antimicrobial and cytotoxic activity of extracellular green-synthesized silver nanoparticles by two marine-derived actinomycete. RSC Adv 2020; 10:10361-10367. [PMID: 35498609 PMCID: PMC9050352 DOI: 10.1039/c9ra11021f] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Accepted: 02/13/2020] [Indexed: 11/28/2022] Open
Abstract
The increase in antibiotic resistance related to microbial biofilms creates an urgent need to search for an alternative and active antimicrobial agent. Recently, nanoparticles have gained considerable attention from scientists due to their potent antimicrobial activity. In the present study, two endosymbiotic actinomycete strains were isolated from marine sponge Crella cyathophora by surface sterilization and incubation of sponge pieces on culture media selective for actinobacteria. The culture filtrate extracts, including the bacterial supernatants (F) and cell filtrate (C) of the two actinomycete strains, were used as the reducing agent for the green biosynthesis of silver nanoparticles. The as-prepared silver nanoparticles were characterized using dynamic light scattering, zeta-potential, UV-Vis spectroscopy, and transmission electron microscopy. The average particle size for synthesized silver nanoparticles was about ∼8.66 ± 2 to 35 ± 2 nm with monodisperse spherical-like shapes and polydispersed shapes, respectively. The synthesized silver nanoparticles exhibited significant antimicrobial activity toward pathogenic microbes, especially with P. aeruginosa and E. cloacae. The effect of silver nanoparticles on the growth curve dynamics of P. aeruginosa and E. cloacae showed that the slope of the bacterial growth curve continuously decreased with increasing nanoparticle concentration. Moreover, the antibiofilm activity of the silver nanoparticles was measured, and the results showed that the silver nanoparticles displayed high biofilm inhibition activity against P. aeruginosa, B. subtilis, and S. aureus. Furthermore, silver nanoparticles exhibited a low to moderate cytotoxic effect against hepatocellular carcinoma cancerous cells, which reflect its possible use in the biomedical field. Culture filtrate of 2 actinomycetes extracted from marine sponge Crella cyathophora was used for the biosynthesis of AgNPs with a significant anti-microbial and biofilm activity. Also, AgNPs exhibited a low to moderate cytotoxicity against cells.![]()
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Affiliation(s)
- Ahmed A. Hamed
- Microbial Chemistry Department
- National Research Centre
- Giza
- Egypt
- Marine Biodiscovery Centre
| | - Hoda Kabary
- Department Agricultural Microbiology
- National Research Center
- Giza
- Egypt
| | - Mohamed Khedr
- Botany and Microbiology Department
- Faculty of Science
- Al-Azhar University
- Cairo
- Egypt
| | - Ahmed N. Emam
- Refractories, Ceramics and Building Materials Department
- National Research Centre (NRC)
- Giza
- Egypt
- Nanomedicine and Tissue Culture Lab
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24
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Theerthagiri J, Salla S, Senthil RA, Nithyadharseni P, Madankumar A, Arunachalam P, Maiyalagan T, Kim HS. A review on ZnO nanostructured materials: energy, environmental and biological applications. NANOTECHNOLOGY 2019; 30:392001. [PMID: 31158832 DOI: 10.1088/1361-6528/ab268a] [Citation(s) in RCA: 166] [Impact Index Per Article: 33.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Zinc oxide (ZnO) is an adaptable material that has distinctive properties, such as high-sensitivity, large specific area, non-toxicity, good compatibility and a high isoelectric point, which favours it to be considered with a few exceptions. It is the most desirable group of nanostructure as far as both structure and properties. The unique and tuneable properties of nanostructured ZnO shows excellent stability in chemically as well as thermally stable n-type semiconducting material with wide applications such as in luminescent material, supercapacitors, battery, solar cells, photocatalysis, biosensors, biomedical and biological applications in the form of bulk crystal, thin film and pellets. The nanosized materials exhibit higher dissolution rates as well as higher solubility when compared to the bulk materials. This review significantly focused on the current improvement in ZnO-based nanomaterials/composites/doped materials for the application in the field of energy storage and conversion devices and biological applications. Special deliberation has been paid on supercapacitors, Li-ion batteries, dye-sensitized solar cells, photocatalysis, biosensors, biomedical and biological applications. Finally, the benefits of ZnO-based materials for the utilizations in the field of energy and biological sciences are moreover consistently analysed.
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Affiliation(s)
- J Theerthagiri
- Centre of Excellence for Energy Research, Sathyabama Institute of Science and Technology (Deemed to be University), Chennai 600119, India
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Hahm E, Kang EJ, Pham XH, Jeong D, Jeong DH, Jung S, Jun BH. Mono-6-Deoxy-6-Aminopropylamino- β-Cyclodextrin on Ag-Embedded SiO 2 Nanoparticle as a Selectively Capturing Ligand to Flavonoids. NANOMATERIALS (BASEL, SWITZERLAND) 2019; 9:E1349. [PMID: 31547075 PMCID: PMC6835478 DOI: 10.3390/nano9101349] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/11/2019] [Revised: 09/17/2019] [Accepted: 09/17/2019] [Indexed: 12/11/2022]
Abstract
It has been increasingly important to develop a highly sensitive and selective technique that is easy to handle in detecting levels of beneficial or hazardous analytes in trace quantity. In this study, mono-6-deoxy-6-aminopropylamino-β-cyclodextrin (pr-β-CD)-functionalized silver-assembled silica nanoparticles (SiO2@Ag@pr-β-CD) for flavonoid detection were successfully prepared. The presence of pr-β-CD on the surface of SiO2@Ag enhanced the selectivity in capturing quercetin and myricetin among other similar materials (naringenin and apigenin). In addition, SiO2@Ag@pr-β-CD was able to detect quercetin corresponding to a limit of detection (LOD) as low as 0.55 ppm. The relationship between the Raman intensity of SiO2@Ag@pr-β-CD and the logarithm of the Que concentration obeyed linearity in the range 3.4-33.8 ppm (R2 = 0.997). The results indicate that SiO2@Ag@pr-β-CD is a promising material for immediately analyzing samples that demand high sensitivity and selectivity of detection.
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Affiliation(s)
- Eunil Hahm
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 05029, Korea.
| | - Eun Ji Kang
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 05029, Korea.
| | - Xuan-Hung Pham
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 05029, Korea.
| | - Daham Jeong
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 05029, Korea.
| | - Dae Hong Jeong
- Department of Chemistry Education and Center for Educational Research, Seoul National University, Seoul 08826, Korea.
| | - Seunho Jung
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 05029, Korea.
| | - Bong-Hyun Jun
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 05029, Korea.
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Miao X, Wen S, Su Y, Fu J, Luo X, Wu P, Cai C, Jelinek R, Jiang LP, Zhu JJ. Graphene Quantum Dots Wrapped Gold Nanoparticles with Integrated Enhancement Mechanisms as Sensitive and Homogeneous Substrates for Surface-Enhanced Raman Spectroscopy. Anal Chem 2019; 91:7295-7303. [PMID: 31062958 DOI: 10.1021/acs.analchem.9b01001] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Rational engineering of highly stable and Raman-active nanostructured substrates is still urgently in demand for achieving sensitive and reliable surface-enhanced Raman spectroscopy (SERS) analysis in solution phase. Herein, monodisperse N-doping graphene quantum dots wrapped Au nanoparticles (Au-NGQD NPs) were facilely prepared, and further their applications as substrates in SERS-based detection and cellular imaging have been explored. The as-prepared Au-NGQD NPs exhibit superior long-term stability and biocompatibility, as well as large enhancement capability due to the integration of electromagnetic and chemical enhancements. The practical applicability of the Au-NGQD NPs was verified via the direct SERS tests of several kinds of aromatics in solution phase. Finite-difference time-domain simulations in combination with density functional theory calculation were also successfully used to explain the enhancement mechanism. Furthermore, the Au-NGQD NPs were conjugated with 4-nitrobenzenethiol (4-NBT, as reporter) and 4-mercaptophenylboronic acid (MPBA, as targeting element) to construct the MPBA/4-NBT@Au-NGQD probes, which could specifically recognize glycan-overexpressed cancer cells through SERS imaging on a cell surface. The prepared Au-NGQDs show great potential as superior SERS substrates in solution phase for on-site Raman detection.
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Affiliation(s)
- Xuran Miao
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering , Nanjing University , Nanjing 210023 , China
| | - Shengping Wen
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering , Nanjing University , Nanjing 210023 , China
| | - Yu Su
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering , Nanjing University , Nanjing 210023 , China
| | - Jiaju Fu
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering , Nanjing University , Nanjing 210023 , China
| | - Xiaojun Luo
- Jiangsu Key Laboratory of New Power Batteries, College of Chemistry & Materials Science , Nanjing Normal University , Nanjing 210097 , China
| | - Ping Wu
- Jiangsu Key Laboratory of New Power Batteries, College of Chemistry & Materials Science , Nanjing Normal University , Nanjing 210097 , China
| | - Chenxin Cai
- Jiangsu Key Laboratory of New Power Batteries, College of Chemistry & Materials Science , Nanjing Normal University , Nanjing 210097 , China
| | - Raz Jelinek
- Department of Chemistry , Ben Gurion University of the Negev , Beer Sheva 84105 , Israel
| | - Li-Ping Jiang
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering , Nanjing University , Nanjing 210023 , China
| | - Jun-Jie Zhu
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering , Nanjing University , Nanjing 210023 , China
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Vinay SP, Udayabhanu, Nagarju G, Chandrappa CP, Chandrasekhar N. Enhanced photocatalysis, photoluminescence, and anti-bacterial activities of nanosize Ag: green synthesized via Rauvolfia tetraphylla (devil pepper). SN APPLIED SCIENCES 2019. [DOI: 10.1007/s42452-019-0437-0] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Piktel E, Wnorowska U, Cieśluk M, Deptula P, Pogoda K, Misztalewska-Turkowicz I, Paprocka P, Niemirowicz-Laskowska K, Wilczewska AZ, Janmey PA, Bucki R. Inhibition of inflammatory response in human keratinocytes by magnetic nanoparticles functionalized with PBP10 peptide derived from the PIP2-binding site of human plasma gelsolin. J Nanobiotechnology 2019; 17:22. [PMID: 30711007 PMCID: PMC6359803 DOI: 10.1186/s12951-019-0455-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2018] [Accepted: 01/11/2019] [Indexed: 12/20/2022] Open
Abstract
Background Human plasma gelsolin (pGSN) is a multifunctional actin-binding protein involved in a variety of biological processes, including neutralization of pro-inflammatory molecules such as lipopolysaccharide (LPS) and lipoteichoic acid (LTA) and modulation of host inflammatory response. It was found that PBP10, a synthetic rhodamine B-conjugated peptide, based on the phosphoinositide-binding site of pGSN, exerts bactericidal activity against Gram-positive and Gram-negative bacteria, interacts specifically with LPS and LTA, and limits microbial-induced inflammatory effects. The therapeutic efficiency of PBP10 when immobilized on the surface of iron oxide-based magnetic nanoparticles was not evaluated, to date. Results Using the human keratinocyte cell line HaCaT stimulated by bacterially-derived LPS and LTA as an in vitro model of bacterial infection, we examined the anti-inflammatory effects of nanosystems consisting of iron oxide-based magnetic nanoparticles with aminosilane (MNP@NH2) or gold shells (MNP@Au) functionalized by a set of peptides, derived from the phosphatidylinositol 4,5-bisphosphate (PIP2)-binding site of the human plasma protein gelsolin, which also binds LPS and LTA. Our results indicate that these nanosystems can kill both Gram-positive and Gram-negative bacteria and limit the production of inflammatory mediators, including nitric oxide (NO), reactive oxygen species (ROS), and interleukin-8 (IL-8) in the response to heat-killed microbes or extracted bacterial cell wall components. The nanoparticles possess the potential to improve therapeutic efficacy and are characterized by lower toxicity and improved hemocompatibility when compared to free peptides. Atomic force microscopy (AFM) showed that these PBP10-based nanosystems prevented changes in nanomechanical properties of cells that were otherwise stimulated by LPS. Conclusions Neutralization of endotoxemia-mediated cellular effects by gelsolin-derived peptides and PBP10-containing nanosystems might be considered as potent therapeutic agents in the improved therapy of bacterial infections and microbial-induced inflammation.
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Affiliation(s)
- Ewelina Piktel
- Department of Microbiological and Nanobiomedical Engineering, Medical University of Bialystok, Mickiewicza 2c, 15-222, Bialystok, Poland
| | - Urszula Wnorowska
- Department of Microbiological and Nanobiomedical Engineering, Medical University of Bialystok, Mickiewicza 2c, 15-222, Bialystok, Poland
| | - Mateusz Cieśluk
- Department of Microbiological and Nanobiomedical Engineering, Medical University of Bialystok, Mickiewicza 2c, 15-222, Bialystok, Poland
| | - Piotr Deptula
- Department of Microbiological and Nanobiomedical Engineering, Medical University of Bialystok, Mickiewicza 2c, 15-222, Bialystok, Poland
| | - Katarzyna Pogoda
- IInstitute of Nuclear Physics Polish Academy of Sciences, PL-31342, Krakow, Poland
| | | | - Paulina Paprocka
- Department of Microbiology and Immunology, The Faculty of Medicine and Health Sciences of the Jan Kochanowski University in Kielce, Kielce, Poland
| | - Katarzyna Niemirowicz-Laskowska
- Department of Microbiological and Nanobiomedical Engineering, Medical University of Bialystok, Mickiewicza 2c, 15-222, Bialystok, Poland
| | | | - Paul A Janmey
- Department of Physiology and Institute for Medicine and Engineering, University of Pennsylvania, Philadelphia, PA, USA
| | - Robert Bucki
- Department of Microbiological and Nanobiomedical Engineering, Medical University of Bialystok, Mickiewicza 2c, 15-222, Bialystok, Poland.
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Nejabatdoust A, Salehzadeh A, Zamani H, Moradi-Shoeili Z. Synthesis, Characterization and Functionalization of ZnO Nanoparticles by Glutamic Acid (Glu) and Conjugation of ZnO@Glu by Thiosemicarbazide and Its Synergistic Activity with Ciprofloxacin Against Multi-drug Resistant Staphylococcus aureus. J CLUST SCI 2019. [DOI: 10.1007/s10876-018-01487-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Scotland KB, Lo J, Grgic T, Lange D. Ureteral stent-associated infection and sepsis: pathogenesis and prevention: a review. BIOFOULING 2019; 35:117-127. [PMID: 30732463 DOI: 10.1080/08927014.2018.1562549] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2018] [Revised: 11/10/2018] [Accepted: 12/13/2018] [Indexed: 06/09/2023]
Abstract
Ureteral stents are commonly used devices in hospital settings. However, their usage is often complicated by associated urinary tract infections as a result of bacterial adhesion onto the indwelling implant surfaces, followed by the formation of layers of biofilm. Once formed, the biofilm is exceedingly difficult to remove, potentially leading to further morbidity and even urosepsis. Urosepsis, where pathogens from the urinary tract enter the bloodstream, has a mortality rate of up to 50% of severely infected patients. Hence, it is important to understand its pathogenesis. In this review, ureteral stent-associated urinary tract infection and urosepsis will be addressed. In particular, the bacterial mechanisms involved, as well as the prevention and treatment of these infections will be discussed.
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Affiliation(s)
- Kymora B Scotland
- a Department of Urologic Sciences , The Stone Centre at Vancouver General Hospital, University of British Columbia , Vancouver , BC , Canada
| | - Joey Lo
- a Department of Urologic Sciences , The Stone Centre at Vancouver General Hospital, University of British Columbia , Vancouver , BC , Canada
| | - Thomas Grgic
- a Department of Urologic Sciences , The Stone Centre at Vancouver General Hospital, University of British Columbia , Vancouver , BC , Canada
| | - Dirk Lange
- a Department of Urologic Sciences , The Stone Centre at Vancouver General Hospital, University of British Columbia , Vancouver , BC , Canada
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Li M, Kang ET, Chua KL, Neoh KG. Sugar-powered nanoantimicrobials for combating bacterial biofilms. Biomater Sci 2019; 7:2961-2974. [DOI: 10.1039/c9bm00471h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Sugar-modified cyclodextrin complexed with quorum sensing inhibitor and antibiotics showed enhanced efficacy in preventing and eradicating bacterial biofilms.
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Affiliation(s)
- Min Li
- Department of Chemical and Biomolecular Engineering
- National University of Singapore
- Singapore 117585
| | - En-Tang Kang
- Department of Chemical and Biomolecular Engineering
- National University of Singapore
- Singapore 117585
| | - Kim Lee Chua
- Department of Biochemistry
- National University of Singapore
- Singapore 117543
| | - Koon Gee Neoh
- Department of Chemical and Biomolecular Engineering
- National University of Singapore
- Singapore 117585
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32
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Hahm E, Cha MG, Kang EJ, Pham XH, Lee SH, Kim HM, Kim DE, Lee YS, Jeong DH, Jun BH. Multilayer Ag-Embedded Silica Nanostructure as a Surface-Enhanced Raman Scattering-Based Chemical Sensor with Dual-Function Internal Standards. ACS APPLIED MATERIALS & INTERFACES 2018; 10:40748-40755. [PMID: 30375227 DOI: 10.1021/acsami.8b12640] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Surface-enhanced Raman scattering (SERS) spectroscopy is attractive in various detection analysis fields. However, the quantitative method using SERS spectroscopy remains as an area to be developed. The key issues in developing quantitative analysis methods by using SERS spectroscopy are the fabrication of reliable SERS-active materials such as nanoparticle-based structures and the acquisition of the SERS signal without any disturbance that may change the SERS signal intensity and frequency. Here, the fabrication of seamless multilayered core-shell nanoparticles with an embedded Raman label compound as an internal standard (MLRLC dots) for quantitative SERS analysis is reported. The embedded Raman label compound in the nanostructure provides a reference value for calibrating the SERS signals. By using the MLRLC dots, it is possible to gain target analyte signals of different concentrations while retaining the Raman signal of the internal standard. The ML4-BBT dots, containing 4-bromobenzenethiol (4-BBT) as an internal standard, are successfully applied in the quantitative analysis of 4-fluorobenzenethiol and thiram, a model pesticide. Additionally, ratiometric analysis was proved practical through normalization of the relative SERS intensity. The ratiometric strategy could be applied to various SERS substrates for quantitative detection of a wide variety of targets.
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Affiliation(s)
- Eunil Hahm
- Department of Bioscience and Biotechnology , Konkuk University , Seoul 05029 , Republic of Korea
| | | | - Eun Ji Kang
- Department of Bioscience and Biotechnology , Konkuk University , Seoul 05029 , Republic of Korea
| | - Xuan-Hung Pham
- Department of Bioscience and Biotechnology , Konkuk University , Seoul 05029 , Republic of Korea
| | - Sang Hun Lee
- Department of Bioengineering , University of California Berkeley , Berkeley , California 94720 , United States
| | - Hyung-Mo Kim
- Department of Bioscience and Biotechnology , Konkuk University , Seoul 05029 , Republic of Korea
| | - Dong-Eun Kim
- Department of Bioscience and Biotechnology , Konkuk University , Seoul 05029 , Republic of Korea
| | | | | | - Bong-Hyun Jun
- Department of Bioscience and Biotechnology , Konkuk University , Seoul 05029 , Republic of Korea
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Stefancu A, Moisoiu V, Couti R, Andras I, Rahota R, Crisan D, Pavel IE, Socaciu C, Leopold N, Crisan N. Combining SERS analysis of serum with PSA levels for improving the detection of prostate cancer. Nanomedicine (Lond) 2018; 13:2455-2467. [DOI: 10.2217/nnm-2018-0127] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Aim: Previous studies regarding surface-enhanced Raman scattering (SERS) of serum have shown promising initial results in discriminating prostate cancer, a strategy which could complement standard tests such as the prostate-specific antigen (PSA). Materials & methods: SERS spectra of serum samples were combined with serum PSA levels to improve the discrimination accuracy between prostate cancer and nonmalignant pathologies in a cohort of 54 patients using principal component analysis-linear discriminant analysis (PCA-LDA). Results & discussion: Combining SERS spectra with serum PSA levels in a single PCA-LDA model could discriminate between the two groups with an overall accuracy of 94%, yielding better results than either method alone. Conclusion: These results highlight that combining SERS-based cancer screening with serum PSA levels represents a promising strategy for improving the accuracy of prostate cancer diagnosis.
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Affiliation(s)
- Andrei Stefancu
- Faculty of Physics, Babeș-Bolyai University, Cluj-Napoca, Romania
- MEDFUTURE Research Center for Advanced Medicine, Iuliu Hatieganu University of Medicine & Pharmacy, Cluj-Napoca, Romania
| | - Vlad Moisoiu
- Faculty of Physics, Babeș-Bolyai University, Cluj-Napoca, Romania
- IMOGEN Medical Research Institute, County Clinical Emergency Hospital, Cluj-Napoca, Romania
| | - Razvan Couti
- Department of Urology, Clinical Municipal Hospital, Cluj-Napoca, Romania
| | - Iulia Andras
- Department of Urology, Clinical Municipal Hospital, Cluj-Napoca, Romania
- Department of Urology, Iuliu Hatieganu University of Medicine & Pharmacy, Cluj-Napoca, Romania
| | - Razvan Rahota
- Department of Urology, Clinical Municipal Hospital, Cluj-Napoca, Romania
| | - Dana Crisan
- 5th Medical Clinic, Iuliu Hatieganu University of Medicine & Pharmacy, Cluj-Napoca, Romania
| | - Ioana E Pavel
- MEDFUTURE Research Center for Advanced Medicine, Iuliu Hatieganu University of Medicine & Pharmacy, Cluj-Napoca, Romania
- Department of Chemistry, Wright State University, Dayton, OH 45435, USA
| | - Carmen Socaciu
- BIODIATECH Research Center for Applied Biotechnology, SC Proplanta, Cluj-Napoca, Romania
- Faculty of Food Science & Technology, University of Agricultural Sciences & Veterinary Medicine of Cluj-Napoca, Cluj-Napoca, Romania
| | - Nicolae Leopold
- Faculty of Physics, Babeș-Bolyai University, Cluj-Napoca, Romania
- MEDFUTURE Research Center for Advanced Medicine, Iuliu Hatieganu University of Medicine & Pharmacy, Cluj-Napoca, Romania
| | - Nicolae Crisan
- Department of Urology, Clinical Municipal Hospital, Cluj-Napoca, Romania
- Department of Urology, Iuliu Hatieganu University of Medicine & Pharmacy, Cluj-Napoca, Romania
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Mi G, Shi D, Wang M, Webster TJ. Reducing Bacterial Infections and Biofilm Formation Using Nanoparticles and Nanostructured Antibacterial Surfaces. Adv Healthc Mater 2018; 7:e1800103. [PMID: 29790304 DOI: 10.1002/adhm.201800103] [Citation(s) in RCA: 101] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2018] [Revised: 03/29/2018] [Indexed: 02/02/2023]
Abstract
With the rapid spreading of resistance among common bacterial pathogens, bacterial infections, especially antibiotic-resistant bacterial infections, have drawn much attention worldwide. In light of this, nanoparticles, including metal and metal oxide nanoparticles, liposomes, polymersomes, and solid lipid nanoparticles, have been increasingly exploited as both efficient antimicrobials themselves or as delivery platforms to enhance the effectiveness of existing antibiotics. In addition to the emergence of widespread antibiotic resistance, of equal concern are implantable device-associated infections, which result from bacterial adhesion and subsequent biofilm formation at the site of implantation. The ineffectiveness of conventional antibiotics against these biofilms often leads to revision surgery, which is both debilitating to the patient and expensive. Toward this end, micro- and nanotopographies, especially those that resemble natural surfaces, and nonfouling chemistries represent a promising combination for long-term antibacterial activity. Collectively, the use of nanoparticles and nanostructured surfaces to combat bacterial growth and infections is a promising solution to the growing problem of antibiotic resistance and biofilm-related device infections.
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Affiliation(s)
- Gujie Mi
- Department of Chemical Engineering; 313 Snell Engineering Center; Northeastern University; 360 Huntington Avenue Boston MA 02115 USA
| | - Di Shi
- Department of Chemical Engineering; 313 Snell Engineering Center; Northeastern University; 360 Huntington Avenue Boston MA 02115 USA
| | - Mian Wang
- Department of Chemical Engineering; 313 Snell Engineering Center; Northeastern University; 360 Huntington Avenue Boston MA 02115 USA
| | - Thomas J. Webster
- Department of Chemical Engineering; 313 Snell Engineering Center; Northeastern University; 360 Huntington Avenue Boston MA 02115 USA
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Nandhini G, Suriyaprabha R, Maria Sheela Pauline W, Rajendran V, Aicher WK, Awitor OK. Influence of solvents on the changes in structure, purity, and in vitro characteristics of green-synthesized ZnO nanoparticles from Costus igneus. APPLIED NANOSCIENCE 2018. [DOI: 10.1007/s13204-018-0810-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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Enhancement of drug permeability across blood brain barrier using nanoparticles in meningitis. Inflammopharmacology 2018; 26:675-684. [PMID: 29582240 DOI: 10.1007/s10787-018-0468-y] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Accepted: 03/15/2018] [Indexed: 10/17/2022]
Abstract
The central nervous system, one of the most delicate microenvironments of the body, is protected by the blood-brain barrier regulating its homeostasis. Blood-brain barrier is a highly complex structure that tightly regulates the movement of ions of a limited number of small molecules and of an even more restricted number of macromolecules from the blood to the brain, protecting it from injuries and diseases. However, the blood-brain barrier also significantly precludes the delivery of drugs to the brain, thus, preventing the therapy of a number of neurological disorders. As a consequence, several strategies are currently being sought after to enhance the delivery of drugs across the blood-brain barrier. Within this review a brief description of the structural and physiological features of the barriers and the recently born strategy of brain drug delivery based on the use of nanoparticles are described. Finally, the future technological approaches are described. The strong efforts to allow the translation from preclinical to concrete clinical applications are worth the economic investments.
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Rhodes NJ, Cruce CE, O'Donnell JN, Wunderink RG, Hauser AR. Resistance Trends and Treatment Options in Gram-Negative Ventilator-Associated Pneumonia. Curr Infect Dis Rep 2018; 20:3. [PMID: 29511909 DOI: 10.1007/s11908-018-0609-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
PURPOSE OF REVIEW Hospital-acquired and ventilator-associated pneumonia (VAP) are frequent causes of infection among critically ill patients. VAP is the most common hospital-acquired bacterial infection among mechanically ventilated patients. Unfortunately, many of the nosocomial Gram-negative bacteria that cause VAP are increasingly difficult to treat. Additionally, the evolution and dissemination of multi- and pan-drug resistant strains leave clinicians with few treatment options. VAP patients represent a dynamic population at risk for antibiotic failure and under-dosing due to altered antibiotic pharmacokinetic parameters. Since few antibiotic agents have been approved within the last 15 years, and no new agents specifically targeting VAP have been approved to date, it is anticipated that this problem will worsen. Given the public health crisis posed by resistant Gram-negative bacteria, it is essential to establish a firm understanding of the current epidemiology of VAP, the changing trends in Gram-negative resistance in VAP, and the current issues in drug development for Gram-negative bacteria that cause VAP. RECENT FINDINGS Rapid identification technologies and phenotypic methods, new therapeutic strategies, and novel treatment paradigms have evolved in an attempt to improve treatment outcomes for VAP; however, clinical data supporting alternative treatment strategies and adjunctive therapies remain sparse. Importantly, new classes of antimicrobials, novel virulence factor inhibitors, and beta-lactam/beta-lactamase inhibitor combinations are currently in development. Conscientious stewardship of new and emerging therapeutic agents will be needed to ensure they remain effective well into the future.
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Affiliation(s)
- Nathaniel J Rhodes
- Department of Pharmacy Practice, Midwestern University, Chicago College of Pharmacy, 555 31st St., Downers Grove, IL, 60515, USA. .,Department of Pharmacy, Northwestern Memorial Hospital, Chicago, IL, USA.
| | - Caroline E Cruce
- Department of Pharmacy Practice, Midwestern University, Chicago College of Pharmacy, 555 31st St., Downers Grove, IL, 60515, USA.,Department of Pharmacy, Northwestern Memorial Hospital, Chicago, IL, USA
| | - J Nicholas O'Donnell
- Department of Pharmacy Practice, Albany College of Pharmacy and Health Sciences, Albany, NY, USA
| | - Richard G Wunderink
- Department of Internal Medicine, Division of Pulmonary Critical Care, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Alan R Hauser
- Department of Internal Medicine, Division of Infectious Diseases, Northwestern University Feinberg School of Medicine, Chicago, IL, USA.,Department of Microbiology-Immunology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
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Aljabali AAA, Hussein E, Aljumaili O, Zoubi MA, Altrad B, Albatayneh K, Abd Al-razaq MA. Rapid Magnetic Nanobiosensor for the detection ofSerratia marcescen. ACTA ACUST UNITED AC 2018. [DOI: 10.1088/1757-899x/305/1/012005] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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39
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Kim TH, Pham XH, Rho WY, Kim HM, Hahm E, Ha Y, Son BS, Lee SH, Jun BH. Ag and Ag─Au Introduced Silica-coated Magnetic Beads. B KOREAN CHEM SOC 2018. [DOI: 10.1002/bkcs.11377] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Tae Han Kim
- Department of Bioscience and Biotechnology; Konkuk University; Seoul 05029 Republic of Korea
| | - Xuan-Hung Pham
- Department of Bioscience and Biotechnology; Konkuk University; Seoul 05029 Republic of Korea
| | - Won-Yeop Rho
- Department of Bioscience and Biotechnology; Konkuk University; Seoul 05029 Republic of Korea
| | - Hyun-Mo Kim
- Department of Bioscience and Biotechnology; Konkuk University; Seoul 05029 Republic of Korea
| | - Eunil Hahm
- Department of Bioscience and Biotechnology; Konkuk University; Seoul 05029 Republic of Korea
| | - Yuna Ha
- Department of Bioscience and Biotechnology; Konkuk University; Seoul 05029 Republic of Korea
| | - Byung Sung Son
- Department of Bioscience and Biotechnology; Konkuk University; Seoul 05029 Republic of Korea
| | - Sang Hun Lee
- School of Chemical and Biological Engineering; Seoul National University; Seoul 08826 Republic of Korea
| | - Bong-Hyun Jun
- Department of Bioscience and Biotechnology; Konkuk University; Seoul 05029 Republic of Korea
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40
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Zanni E, Bruni E, Chandraiahgari CR, De Bellis G, Santangelo MG, Leone M, Bregnocchi A, Mancini P, Sarto MS, Uccelletti D. Evaluation of the antibacterial power and biocompatibility of zinc oxide nanorods decorated graphene nanoplatelets: new perspectives for antibiodeteriorative approaches. J Nanobiotechnology 2017; 15:57. [PMID: 28764786 PMCID: PMC5539890 DOI: 10.1186/s12951-017-0291-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2017] [Accepted: 07/21/2017] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Nanotechnologies are currently revolutionizing the world around us, improving the quality of our lives thanks to a multitude of applications in several areas including the environmental preservation, with the biodeterioration phenomenon representing one of the major concerns. RESULTS In this study, an innovative nanomaterial consisting of graphene nanoplatelets decorated by zinc oxide nanorods (ZNGs) was tested for the ability to inhibit two different pathogens belonging to bacterial genera frequently associated with nosocomial infections as well as biodeterioration phenomenon: the Gram-positive Staphylococcus aureus and the Gram-negative Pseudomonas aeruginosa. A time- and dose-dependent bactericidal effect in cell viability was highlighted against both bacteria, demonstrating a strong antimicrobial potential of ZNGs. Furthermore, the analysis of bacterial surfaces through Field emission scanning electron microscopy (FESEM) revealed ZNGs mechanical interaction at cell wall level. ZNGs induced in those bacteria deep physical damages not compatible with life as a result of nanoneedle-like action of this nanomaterial together with its nanoblade effect. Cell injuries were confirmed by Fourier transform infrared spectroscopy, revealing that ZNGs antimicrobial effect was related to protein and phospholipid changes as well as a decrease in extracellular polymeric substances; this was also supported by a reduction in biofilm formation of both bacteria. The antibacterial properties of ZNGs applied on building-related materials make them a promising tool for the conservation of indoor/outdoor surfaces. Finally, ZNGs nanotoxicity was assessed in vivo by exploiting the soil free living nematode Caenorhabditis elegans. Notably, no harmful effects of ZNGs on larval development, lifespan, fertility as well as neuromuscular functionality were highlighted in this excellent model for environmental nanotoxicology. CONCLUSIONS Overall, ZNGs represent a promising candidate for developing biocompatible materials that can be exploitable in antimicrobial applications without releasing toxic compounds, harmful to the environment.
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Affiliation(s)
- Elena Zanni
- Department of Biology and Biotechnology C. Darwin, Sapienza University of Rome, Piazzale Aldo Moro 5, Rome, Italy
- Research Center on Nanotechnology Applied to Engineering of Sapienza (CNIS), SNNLab, Sapienza University of Rome, Piazzale Aldo Moro 5, Rome, Italy
| | - Erika Bruni
- Department of Biology and Biotechnology C. Darwin, Sapienza University of Rome, Piazzale Aldo Moro 5, Rome, Italy
| | - Chandrakanth Reddy Chandraiahgari
- Research Center on Nanotechnology Applied to Engineering of Sapienza (CNIS), SNNLab, Sapienza University of Rome, Piazzale Aldo Moro 5, Rome, Italy
- Department of Astronautical, Electrical and Energy Engineering, Sapienza University of Rome, Via Eudossiana 18, Rome, Italy
| | - Giovanni De Bellis
- Research Center on Nanotechnology Applied to Engineering of Sapienza (CNIS), SNNLab, Sapienza University of Rome, Piazzale Aldo Moro 5, Rome, Italy
- Department of Astronautical, Electrical and Energy Engineering, Sapienza University of Rome, Via Eudossiana 18, Rome, Italy
| | | | - Maurizio Leone
- Department of Physics and Chemistry, University of Palermo, Palermo, Italy
| | - Agnese Bregnocchi
- Research Center on Nanotechnology Applied to Engineering of Sapienza (CNIS), SNNLab, Sapienza University of Rome, Piazzale Aldo Moro 5, Rome, Italy
- Department of Astronautical, Electrical and Energy Engineering, Sapienza University of Rome, Via Eudossiana 18, Rome, Italy
| | - Patrizia Mancini
- Department of Experimental Medicine, Sapienza University of Rome, Viale Regina Elena 324, Rome, Italy
| | - Maria Sabrina Sarto
- Research Center on Nanotechnology Applied to Engineering of Sapienza (CNIS), SNNLab, Sapienza University of Rome, Piazzale Aldo Moro 5, Rome, Italy
- Department of Astronautical, Electrical and Energy Engineering, Sapienza University of Rome, Via Eudossiana 18, Rome, Italy
| | - Daniela Uccelletti
- Department of Biology and Biotechnology C. Darwin, Sapienza University of Rome, Piazzale Aldo Moro 5, Rome, Italy
- Research Center on Nanotechnology Applied to Engineering of Sapienza (CNIS), SNNLab, Sapienza University of Rome, Piazzale Aldo Moro 5, Rome, Italy
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Niemirowicz K, Bucki R. Enhancing the fungicidal activity of antibiotics: are magnetic nanoparticles the key? Nanomedicine (Lond) 2017; 12:1747-1749. [PMID: 28703013 DOI: 10.2217/nnm-2017-0051] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Affiliation(s)
- Katarzyna Niemirowicz
- Department of Microbiological & Nanobiomedical Engineering, Medical University of Białystok, Białystok, Poland
| | - Robert Bucki
- Department of Microbiological & Nanobiomedical Engineering, Medical University of Białystok, Białystok, Poland
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Cha MG, Kim HM, Kang YL, Lee M, Kang H, Kim J, Pham XH, Kim TH, Hahm E, Lee YS, Jeong DH, Jun BH. Thin silica shell coated Ag assembled nanostructures for expanding generality of SERS analytes. PLoS One 2017; 12:e0178651. [PMID: 28570633 PMCID: PMC5453564 DOI: 10.1371/journal.pone.0178651] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2017] [Accepted: 05/16/2017] [Indexed: 12/29/2022] Open
Abstract
Surface-enhanced Raman scattering (SERS) provides a unique non-destructive spectroscopic fingerprint for chemical detection. However, intrinsic differences in affinity of analyte molecules to metal surface hinder SERS as a universal quantitative detection tool for various analyte molecules simultaneously. This must be overcome while keeping close proximity of analyte molecules to the metal surface. Moreover, assembled metal nanoparticles (NPs) structures might be beneficial for sensitive and reliable detection of chemicals than single NP structures. For this purpose, here we introduce thin silica-coated and assembled Ag NPs (SiO2@Ag@SiO2 NPs) for simultaneous and quantitative detection of chemicals that have different intrinsic affinities to silver metal. These SiO2@Ag@SiO2 NPs could detect each SERS peak of aniline or 4-aminothiophenol (4-ATP) from the mixture with limits of detection (LOD) of 93 ppm and 54 ppb, respectively. E-field distribution based on interparticle distance was simulated using discrete dipole approximation (DDA) calculation to gain insight into enhanced scattering of these thin silica coated Ag NP assemblies. These NPs were successfully applied to detect aniline in river water and tap water. Results suggest that SiO2@Ag@SiO2 NP-based SERS detection systems can be used as a simple and universal detection tool for environment pollutants and food safety.
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Affiliation(s)
- Myeong Geun Cha
- Department of Chemistry Education, Seoul National University, Seoul, Republic of Korea
| | - Hyung-Mo Kim
- Department of Bioscience and Biotechnology, Konkuk University, Seoul, Republic of Korea
| | - Yoo-Lee Kang
- Department of Bioscience and Biotechnology, Konkuk University, Seoul, Republic of Korea
| | - Minwoo Lee
- Department of Chemistry Education, Seoul National University, Seoul, Republic of Korea
| | - Homan Kang
- Interdisciplinary Program in Nano-Science and Technology. Seoul National University, Seoul, Republic of Korea
| | - Jaehi Kim
- School of Chemical and Biological Engineering, Seoul National University Seoul, Republic of Korea
| | - Xuan-Hung Pham
- Department of Bioscience and Biotechnology, Konkuk University, Seoul, Republic of Korea
| | - Tae Han Kim
- Department of Bioscience and Biotechnology, Konkuk University, Seoul, Republic of Korea
| | - Eunil Hahm
- Department of Bioscience and Biotechnology, Konkuk University, Seoul, Republic of Korea
| | - Yoon-Sik Lee
- Interdisciplinary Program in Nano-Science and Technology. Seoul National University, Seoul, Republic of Korea
- School of Chemical and Biological Engineering, Seoul National University Seoul, Republic of Korea
| | - Dae Hong Jeong
- Department of Chemistry Education, Seoul National University, Seoul, Republic of Korea
| | - Bong-Hyun Jun
- Department of Bioscience and Biotechnology, Konkuk University, Seoul, Republic of Korea
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Ramasamy M, Lee J. Recent Nanotechnology Approaches for Prevention and Treatment of Biofilm-Associated Infections on Medical Devices. BIOMED RESEARCH INTERNATIONAL 2016; 2016:1851242. [PMID: 27872845 PMCID: PMC5107826 DOI: 10.1155/2016/1851242] [Citation(s) in RCA: 118] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Accepted: 10/13/2016] [Indexed: 11/23/2022]
Abstract
Bacterial colonization in the form of biofilms on surfaces causes persistent infections and is an issue of considerable concern to healthcare providers. There is an urgent need for novel antimicrobial or antibiofilm surfaces and biomedical devices that provide protection against biofilm formation and planktonic pathogens, including antibiotic resistant strains. In this context, recent developments in the material science and engineering fields and steady progress in the nanotechnology field have created opportunities to design new biomaterials and surfaces with anti-infective, antifouling, bactericidal, and antibiofilm properties. Here we review a number of the recently developed nanotechnology-based biomaterials and explain underlying strategies used to make antibiofilm surfaces.
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Affiliation(s)
| | - Jintae Lee
- School of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea
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44
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Nwokoro E, Leach R, Årdal C, Baraldi E, Ryan K, Plahte J. An assessment of the future impact of alternative technologies on antibiotics markets. J Pharm Policy Pract 2016; 9:34. [PMID: 27800166 PMCID: PMC5080699 DOI: 10.1186/s40545-016-0085-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2016] [Accepted: 10/11/2016] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND The increasing threat of antimicrobial resistance combined with the paucity of new classes of antibiotics represents a serious public health challenge. New treatment technologies could, in theory, have a significant impact on the future use of traditional antibiotics, be it by facilitating rational and responsible use or by product substitution in the existing antibiotics markets, including by reducing the incidence of bacterial infections through preventative approaches. The aim of this paper is to assess the potential of alternative technologies in reducing clinical use of and demand for antibiotics, and to briefly indicate which segments of the antibiotics market that might be impacted by these technologies. METHODS An initial mapping exercise to identify the alternative technologies was followed by a review of relevant published and grey literature (n = 52). We also carried out stakeholder engagement activities by a round-table discussion with infectious disease specialists and a multi-criteria decision analysis exercise with pharmaceutical industry experts. RESULTS Ten alternative technologies were identified and analyzed for their potential impact on the antibiotics market. Of these, rapid point-of-care diagnostics, vaccines, fecal microbiota transplantation, and probiotics were considered to have a "high" or "medium" potential impact over a 10-20 year horizon. Therapeutic antibodies, antibiotic biomaterials, bacteriophages, antimicrobial nanoparticles, antimicrobial peptides, and anti-virulence materials were rated as having "low" potential impact. CONCLUSION Despite the apparent potential of the most promising alternative technologies to reduce demand, that reduction will likely only happen in limited segments of the antibiotics market or, in the case of preventing community acquired streptococcal infections by vaccination, in a low-price generics market segment. Thus, alternative technologies are not expected to represent any disincentive to antibiotics developers. Finally, it is unlikely that alternative technologies will displace the need for new classes, and sub-classes, of antibiotics in the short and medium terms.
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Affiliation(s)
| | - Ross Leach
- Infection Control Program and Division of Infectious Diseases, Geneva University Hospitals and Faculty of Medicine, Geneva, Switzerland
| | | | | | | | - Jens Plahte
- Norwegian Institute of Public Health, Oslo, Norway
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45
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Pham XH, Hahm E, Kim HM, Shim S, Kim TH, Jeong DH, Lee YS, Jun BH. Silver Nanoparticle-Embedded Thin Silica-Coated Graphene Oxide as an SERS Substrate. NANOMATERIALS (BASEL, SWITZERLAND) 2016; 6:E176. [PMID: 28335304 PMCID: PMC5245191 DOI: 10.3390/nano6100176] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Revised: 09/06/2016] [Accepted: 09/06/2016] [Indexed: 11/16/2022]
Abstract
A hybrid of Ag nanoparticle (NP)-embedded thin silica-coated graphene oxide (GO@SiO₂@Ag NPs) was prepared as a surface-enhanced Raman scattering (SERS) substrate. A 6 nm layer of silica was successfully coated on the surface of GO by the physical adsorption of sodium silicate, followed by the hydrolysis of 3-mercaptopropyl trimethoxysilane. Ag NPs were introduced onto the thin silica-coated graphene oxide by the reduction of Ag⁺ to prepare GO@SiO₂@Ag NPs. The GO@SiO₂@Ag NPs exhibited a 1.8-fold enhanced Raman signal compared to GO without a silica coating. The GO@SiO₂@Ag NPs showed a detection limit of 4-mercaptobenzoic acid (4-MBA) at 0.74 μM.
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Affiliation(s)
- Xuan-Hung Pham
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 143-701, Korea.
| | - Eunil Hahm
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 143-701, Korea.
| | - Hyung-Mo Kim
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 143-701, Korea.
| | - Seongbo Shim
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 143-701, Korea.
| | - Tae Han Kim
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 143-701, Korea.
| | - Dae Hong Jeong
- Department of Chemistry Education, Seoul National University, Seoul 151-742, Korea.
| | - Yoon-Sik Lee
- School of Chemical and Biological Engineering, Seoul National University, Seoul 151-742, Korea.
| | - Bong-Hyun Jun
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 143-701, Korea.
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46
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Ortega A, Farah S, Tranque P, Ocaña AV, Nam-Cha SH, Beyth N, Gómez-Roldán C, Pérez-Tanoira R, Domb AJ, Pérez-Martínez FC, Pérez-Martínez J. Antimicrobial evaluation of quaternary ammonium polyethyleneimine nanoparticles against clinical isolates of pathogenic bacteria. IET Nanobiotechnol 2016; 9:342-8. [PMID: 26647809 DOI: 10.1049/iet-nbt.2014.0078] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Peritonitis is a disease caused by bacterial strains that have become increasingly resistant to many antibiotics. The development of alternative therapeutic compounds is the focus of extensive research, so novel nanoparticles (NPs) with activity against antibiotic-resistant bacteria should be developed. In this study, the antibacterial activity of quaternary ammonium polyethyleneimine (QA-PEI) NPs was evaluated against Streptococcus viridans, Stenotrophomonas maltophilia and Escherichia coli. To appraise the antibacterial activity, minimal inhibitory concentration (MIC), minimal bactericidal concentration and bactericidal assays were utilised with different concentrations (1.56-100 µg/ml) of QA-PEI NPs. Moreover, 3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyl tetrazolium bromide (MTT) and annexin V/propidium iodide toxicity assays were performed in cell cultures. MICs for S. maltophilia and E. coli isolates were 12.5 and 25 µg/ml, respectively, whereas the MIC for S. viridans was 100 µg/ml. Furthermore, the growth curve assays revealed that these QA-PEI NPs at a concentration of 12.5 µg/ml significantly inhibited bacterial growth for the bacterial isolates studied. On the other hand, QA-PEI NPs lacked significant toxicity for cells when used at concentrations up to 50 μg/ml for 48 h. The present findings reveal the potential therapeutic value of this QA-PEI NPs as alternative antibacterial agents for peritonitis, especially against Gram-negative bacteria.
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Affiliation(s)
- Agustín Ortega
- BIOTYC Foundation, C/ Blasco de Garay, 27., 02003 Albacete, Spain
| | - Shady Farah
- Institute of Drug Research, School of Pharmacy-Faculty of Medicine, Center for Nanoscience and Nanotechnology and The Alex Grass Center for Drug Design and Synthesis, The Hebrew University of Jerusalem, Jerusalem 91120, Israel
| | - Pedro Tranque
- Instituto de Investigación en Discapacidades Neurológicas (IDINE), Universidad de Castilla-La Mancha, C/ Almansa, 14., 02006 Albacete, Spain
| | - Ana V Ocaña
- Department of Nephrology, Complejo Hospitalario Universitario, C/ Hermanos Falco., 02006 Albacete, Spain
| | - Syong H Nam-Cha
- Department of Pathology, Complejo Hospitalario Universitario, C/ Hermanos Falco., 02006 Albacete, Spain
| | - Nurit Beyth
- Prosthodontics Unit, Faculty of Dentistry, The Hebrew University Jerusalem, Jerusalem 91120, Israel
| | - Carmen Gómez-Roldán
- Department of Nephrology, Complejo Hospitalario Universitario, C/ Hermanos Falco., 02006 Albacete, Spain
| | - Ramón Pérez-Tanoira
- Division of Infectious Diseases and Clinical Microbiology, Fundación Jiménez Díaz, Universidad Autónoma de Madrid, Ave. Reyes Católicos, 2, 28040 Madrid, Spain
| | - Abraham J Domb
- Institute of Drug Research, School of Pharmacy-Faculty of Medicine, Center for Nanoscience and Nanotechnology and The Alex Grass Center for Drug Design and Synthesis, The Hebrew University of Jerusalem, Jerusalem 91120, Israel
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Yang SC, Aljuffali IA, Sung CT, Lin CF, Fang JY. Antimicrobial activity of topically-applied soyaethyl morpholinium ethosulfate micelles against Staphylococcus species. Nanomedicine (Lond) 2016; 11:657-71. [DOI: 10.2217/nnm.15.217] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
Aim: Here we evaluated the antibacterial efficacy of soyaethyl morpholinium ethosulfate (SME) micelles as an inherent bactericide against Staphylococcus aureus and methicillin-resistant S. aureus (MRSA). Methodology: The antimicrobial activity was examined by in vitro culture model and murine model of skin infection. Cationic micelles formed by benzalkonium chloride or cetylpyridinium chloride were used for comparison. Results: The minimum inhibitory concentration and minimum bactericidal concentration against S. aureus and MRSA were 1.71–3.42 and 1.71–6.84 μg/ml, respectively. Topical administration of SME micelles significantly decreased the cutaneous infection and MRSA load in mice. The killing of bacteria was caused by direct cell wall/membrane rupture. SME micelles also penetrated into the bacteria to elicit a Fenton reaction and oxidative stress. Conclusion: SME micelles have potential as antimicrobial agents due to their lethal effect against S. aureus and MRSA with a low toxicity to mammalian cells.
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Affiliation(s)
- Shih-Chun Yang
- Pharmaceutics Laboratory, Graduate Institute of Natural Products, Chang Gung University, 259 Wen-Hwa 1st Road, Kweishan, Taoyuan 333, Taiwan
- Research Center for Industry of Human Ecology, Chang Gung University of Science & Technology, Kweishan, Taoyuan, Taiwan
| | - Ibrahim A Aljuffali
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Calvin T Sung
- Department of Microbiology, Immunology & Molecular Genetics, University of California, Los Angeles, USA
| | - Chwan-Fwu Lin
- Department of Cosmetic Science, Chang Gung University of Science & Technology, Kweishan, Taoyuan, Taiwan
| | - Jia-You Fang
- Pharmaceutics Laboratory, Graduate Institute of Natural Products, Chang Gung University, 259 Wen-Hwa 1st Road, Kweishan, Taoyuan 333, Taiwan
- Chinese Herbal Medicine Research Team, Healthy Aging Research Center, Chang Gung University, Kweishan, Taoyuan, Taiwan
- Immunology Consortium, Chang Gung Memorial Hospital, Kweishan, Taoyuan, Taiwan
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48
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Bakare R, Hawthrone S, Vails C, Gugssa A, Karim A, Stubbs J, Raghavan D. Antimicrobial and cell viability measurement of bovine serum albumin capped silver nanoparticles (Ag/BSA) loaded collagen immobilized poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) film. J Colloid Interface Sci 2016; 465:140-8. [DOI: 10.1016/j.jcis.2015.11.041] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2015] [Revised: 11/17/2015] [Accepted: 11/18/2015] [Indexed: 10/22/2022]
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49
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Chao J, Cao W, Su S, Weng L, Song S, Fan C, Wang L. Nanostructure-based surface-enhanced Raman scattering biosensors for nucleic acids and proteins. J Mater Chem B 2016; 4:1757-1769. [PMID: 32263053 DOI: 10.1039/c5tb02135a] [Citation(s) in RCA: 70] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Detection of nucleic acid and protein targets related to human health and safety has attracted widespread attention. Surface-enhanced Raman scattering (SERS) is a powerful tool for biomarker detection because of its ultrahigh detection sensitivity and unique fingerprinting spectra. In this review, we first introduce the development of nanostructure-based SERS-active substrates and SERS nanotags, which greatly influence the performance of SERS biosensors. We then focus on recent advances in SERS biosensors for DNA, microRNA and protein determination, including label-free, labeled and multiplex analyses as well as in vivo imaging. Finally, the prospects and challenges of such nanostructure-based SERS biosensors are discussed.
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Affiliation(s)
- Jie Chao
- Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, China.
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50
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Şen Karaman D, Sarwar S, Desai D, Björk EM, Odén M, Chakrabarti P, Rosenholm JM, Chakraborti S. Shape engineering boosts antibacterial activity of chitosan coated mesoporous silica nanoparticle doped with silver: a mechanistic investigation. J Mater Chem B 2016; 4:3292-3304. [DOI: 10.1039/c5tb02526e] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Mechanism of antibacterial activity of MSPs with high aspect ratio and surface modification.
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Affiliation(s)
- D. Şen Karaman
- Pharmaceutical Sciences Laboratory
- Faculty of Science and Engineering
- Åbo Akademi University
- Turku
- Finland
| | - S. Sarwar
- Department of Biochemistry
- Bose Institute
- Kolkata 700054
- India
| | - D. Desai
- Pharmaceutical Sciences Laboratory
- Faculty of Science and Engineering
- Åbo Akademi University
- Turku
- Finland
| | - E. M. Björk
- Nanostructured Materials Division
- Department of Physics
- Chemistry and Biology
- Linköping University
- Sweden
| | - M. Odén
- Nanostructured Materials Division
- Department of Physics
- Chemistry and Biology
- Linköping University
- Sweden
| | - P. Chakrabarti
- Department of Biochemistry
- Bose Institute
- Kolkata 700054
- India
| | - J. M. Rosenholm
- Pharmaceutical Sciences Laboratory
- Faculty of Science and Engineering
- Åbo Akademi University
- Turku
- Finland
| | - S. Chakraborti
- Department of Biochemistry
- Bose Institute
- Kolkata 700054
- India
- Department of Chemistry
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