1
|
Sumini M, Souza CRD, Andrade GJS, Oliveira IRC, Scandorieiro S, Tischer CA, Kobayashi RKT, Nakazato G. Cellulose Hydrogel with Hyaluronic Acid and Silver Nanoparticles: Sustained-Release Formulation with Antibacterial Properties against Pseudomonas aeruginosa. Antibiotics (Basel) 2023; 12:antibiotics12050873. [PMID: 37237777 DOI: 10.3390/antibiotics12050873] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 05/04/2023] [Accepted: 05/05/2023] [Indexed: 05/28/2023] Open
Abstract
Pathogenic bacteria resistant to conventional antibiotics represent a global challenge and justify the need for new antimicrobials capable of combating bacterial multidrug resistance. This study describes the development of a topical hydrogel in a formulation composed of cellulose, hyaluronic acid (HA), and silver nanoparticles (AgNPs) against strains of Pseudomonas aeruginosa. AgNPs as an antimicrobial agent were synthesized by a new method based on green chemistry, using arginine as a reducing agent and potassium hydroxide as a carrier. Scanning electron microscopy showed the formation of a composite between cellulose and HA in a three-dimensional network of cellulose fibrils, with thickening of the fibrils and filling of spaces by HA with the presence of pores. Ultraviolet-visible spectroscopy (UV-vis) and particle size distribution for dynamic light scattering (DLS) confirmed the formation of AgNPs with peak absorption at ~430 nm and 57.88 nm. AgNPs dispersion showed a minimum inhibitory concentration (MIC) of 1.5 µg/mL. The time-kill assay showed that after 3 h of exposure to the hydrogel containing AgNPs, there were no viable cells, corresponding to a bactericidal efficacy of 99.999% in the 95% confidence level. We obtained a hydrogel that is easy to apply, with sustained release and bactericidal properties against strains of Pseudomonas aeruginosa at low concentrations of the agent.
Collapse
Affiliation(s)
- Mirian Sumini
- Department of Microbiology, Biological Sciences Center, Londrina State University, Londrina 86057-970, Paraná, Brazil
| | - Clara Ruiz de Souza
- Department of Pharmacy, Health Sciences Center, Londrina State University, Londrina 86057-970, Paraná, Brazil
| | - Gabriel Jonathan Sousa Andrade
- Department of Biochemistry and Biotechnology, Exact Sciences Center, Londrina State University, Londrina 86057-970, Paraná, Brazil
| | - Igor Roberto Cabral Oliveira
- Department of Civil Engineering, Faculty of Technology, Federal University of Amazonas, Manaus 69077-000, Amazonas, Brazil
| | - Sara Scandorieiro
- Department of Microbiology, Biological Sciences Center, Londrina State University, Londrina 86057-970, Paraná, Brazil
| | - Cesar Augusto Tischer
- Department of Biochemistry and Biotechnology, Exact Sciences Center, Londrina State University, Londrina 86057-970, Paraná, Brazil
| | | | - Gerson Nakazato
- Department of Microbiology, Biological Sciences Center, Londrina State University, Londrina 86057-970, Paraná, Brazil
| |
Collapse
|
2
|
Kainourgios P, Maroulas P, Charitidis C. Effect of crosslinker to monomer ratio on the adhesion and size distribution of silver nanoparticles grown on poly (methacrylic acid) microspheres. Colloids Surf A Physicochem Eng Asp 2023. [DOI: 10.1016/j.colsurfa.2023.131002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
|
3
|
Dyrda-Terniuk T, Pryshchepa O, Rafińska K, Kolankowski M, Gołębiowski A, Gloc M, Dobrucka R, Kurzydłowski K, Pomastowski P. Immobilization Of Silver Ions Onto Casein. Colloids Surf A Physicochem Eng Asp 2023. [DOI: 10.1016/j.colsurfa.2023.131390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
|
4
|
Gunasekaran P, Immanuel David C, Shanmugam S, Ramanagul K, Rajendran R, Gothandapani V, Kannan VR, Prabhu J, Nandhakumar R. Positional Isomeric Symmetric Dipodal Receptors Dangled with Rotatable Binding Scaffolds: Fluorescent Sensing of Silver Ions and Sequential Detection of l-Histidine and Their Multifarious Applications. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:802-814. [PMID: 36548786 DOI: 10.1021/acs.jafc.2c05823] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Three simple dipodal artificial acyclic symmetric receptors, SDO, SDM, and SDP, driven by positional isomerism based on xylelene scaffolds were designed, synthesized, and characterized by 1H NMR, 13C NMR, and mass spectroscopy techniques. Probes SDO, SDM, and SDP demonstrated selective detection of Ag+ metal ions and amino acid l-histidine in a DMSO-H2O solution (1:1 v/v, HEPES 50 mM, pH = 7.4). The detection of Ag+ metal ions occurred in three ways: (i) inhibition of the photoinduced electron-transfer (PET) process, (ii) blueshifted fluorescence enhancement via the intramolecular charge-transfer (ICT) process, and (iii) restricted rotation of the dangling benzylic scaffold following coordination with a Ag+ metal ion. Job's plot analysis and quantum yields confirm the binding of probes to Ag+ in 1:1, 1:2, and 1:2 ratios with LODs and LOQs found to be 1.3 μM and 3.19 × 10-7 M, 6.40 × 10-7 and 2.44 × 10 -6 M, and 9.76 × 10-7 and 21.01 × 10-7 M, respectively. 1H NMR titration, HRMS, ESI-TOF, IR analysis, and theoretical DFT investigations were also used to establish the binding stoichiometry. Furthermore, the probes were utilized for the detection of Ag+ ions in water samples, food samples, soil analysis, and bacterial imaging in Escherichia coli cells and a molecular logic gate was constructed.
Collapse
Affiliation(s)
- Prabakaran Gunasekaran
- Fluorensic Materials Lab, Department of Applied Chemistry, Karunya Institute of Technology and Sciences (Deemed to Be University), Karunya Nagar, Coimbatore 641 114, India
| | - Charles Immanuel David
- Fluorensic Materials Lab, Department of Applied Chemistry, Karunya Institute of Technology and Sciences (Deemed to Be University), Karunya Nagar, Coimbatore 641 114, India
| | - Suresh Shanmugam
- Division of Organic Chemistry and Biochemistry, Ruđer Bošković Institute, Bijenička cesta 54, Zagreb 10000, Croatia
| | | | - Ramya Rajendran
- Department of Microbiology, Bharathidasan University, Tiruchirappalli 620 024, India
| | | | - Velu Rajesh Kannan
- Department of Microbiology, Bharathidasan University, Tiruchirappalli 620 024, India
| | - Jeyaraj Prabhu
- Fluorensic Materials Lab, Department of Applied Chemistry, Karunya Institute of Technology and Sciences (Deemed to Be University), Karunya Nagar, Coimbatore 641 114, India
| | - Raju Nandhakumar
- Fluorensic Materials Lab, Department of Applied Chemistry, Karunya Institute of Technology and Sciences (Deemed to Be University), Karunya Nagar, Coimbatore 641 114, India
| |
Collapse
|
5
|
Gupta G, Hamawandi B, Sheward DJ, Murrell B, Hanke L, McInerney G, Blosi M, Costa AL, Toprak MS, Fadeel B. Silver nanoparticles with excellent biocompatibility block pseudotyped SARS-CoV-2 in the presence of lung surfactant. Front Bioeng Biotechnol 2022; 10:1083232. [PMID: 36578508 PMCID: PMC9790969 DOI: 10.3389/fbioe.2022.1083232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Accepted: 11/30/2022] [Indexed: 12/14/2022] Open
Abstract
Silver (Ag) is known to possess antimicrobial properties which is commonly attributed to soluble Ag ions. Here, we showed that Ag nanoparticles (NPs) potently inhibited SARS-CoV-2 infection using two different pseudovirus neutralization assays. We also evaluated a set of Ag nanoparticles of different sizes with varying surface properties, including polyvinylpyrrolidone (PVP)-coated and poly (ethylene glycol) (PEG)-modified Ag nanoparticles, and found that only the bare (unmodified) nanoparticles were able to prevent virus infection. For comparison, TiO2 nanoparticles failed to intercept the virus. Proteins and lipids may adsorb to nanoparticles forming a so-called bio-corona; however, Ag nanoparticles pre-incubated with pulmonary surfactant retained their ability to block virus infection in the present model. Furthermore, the secondary structure of the spike protein of SARS-CoV-2 was perturbed by the Ag nanoparticles, but not by the ionic control (AgNO3) nor by the TiO2 nanoparticles. Finally, Ag nanoparticles were shown to be non-cytotoxic towards the human lung epithelial cell line BEAS-2B and this was confirmed by using primary human nasal epithelial cells. These results further support that Ag nanoparticles may find use as anti-viral agents.
Collapse
Affiliation(s)
- Govind Gupta
- Division of Molecular Toxicology, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Bejan Hamawandi
- Department of Applied Physics, KTH Royal Institute of Technology, Stockholm, Sweden
| | - Daniel J. Sheward
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, Sweden
| | - Ben Murrell
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, Sweden
| | - Leo Hanke
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, Sweden
| | - Gerald McInerney
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, Sweden
| | - Magda Blosi
- Institute of Science and Technology for Ceramics, National Research Council of Italy, Faenza, Italy
| | - Anna L. Costa
- Institute of Science and Technology for Ceramics, National Research Council of Italy, Faenza, Italy
| | - Muhammet S. Toprak
- Department of Applied Physics, KTH Royal Institute of Technology, Stockholm, Sweden
| | - Bengt Fadeel
- Division of Molecular Toxicology, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden,*Correspondence: Bengt Fadeel,
| |
Collapse
|
6
|
Silver Nanoparticle Effects on Antioxidant Response in Tobacco Are Modulated by Surface Coating. PLANTS 2022; 11:plants11182402. [PMID: 36145803 PMCID: PMC9504990 DOI: 10.3390/plants11182402] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 09/08/2022] [Accepted: 09/10/2022] [Indexed: 11/17/2022]
Abstract
The antimicrobial properties of silver and enhanced reactivity when applied in a nanoparticle form (AgNPs) led to their growing utilization in industry and various consumer products, which raises concerns about their environmental impact. Since AgNPs are prone to transformation, surface coatings are added to enhance their stability. AgNP phytotoxicity has been mainly attributed to the excess generation of reactive oxygen species (ROS), leading to the induction of oxidative stress. Herein, in vitro-grown tobacco (Nicotiana tabacum) plants were exposed to AgNPs stabilized with either polyvinylpyrrolidone (PVP) or cetyltrimethylammonium bromide (CTAB) as well as to ionic silver (AgNO3), applied in the same concentrations, either alone or in combination with cysteine, a strong silver ligand. The results show a higher accumulation of Ag in roots and leaves after exposure to AgNPs compared to AgNO3. This was correlated with a predominantly higher impact of nanoparticle than ionic silver form on parameters of oxidative stress, although no severe damage to important biomolecules was observed. Nevertheless, all types of treatments caused mobilization of antioxidant machinery, especially in leaves, although surface coatings modulated the activation of its specific components. Most effects induced by AgNPs or AgNO3 were alleviated with addition of cysteine.
Collapse
|
7
|
Rodrigues JSM, Rodrigues AM, do Nascimento Souza D, de Novais ERP, Rodrigues AM, de Oliveira GCA, de Lima Ferreira Novais A. DFT calculations to investigate silver ions as a virucide from SARS-CoV-2. J Mol Model 2021; 27:323. [PMID: 34643800 PMCID: PMC8510886 DOI: 10.1007/s00894-021-04941-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Accepted: 09/29/2021] [Indexed: 01/18/2023]
Abstract
The world has face the COVID-19 pandemic which has already caused millions of death. Due to the urgency in fighting the virus, we study five residues of free amino acids present in the structure of the SARS-CoV-2 spike protein (S). We investigated the spontaneous interaction between amino acids and silver ions (Ag+), considering these ions as a virucide chemical agent for SARS-CoV-2. The amino acid-Ag+ systems were investigated in a gaseous medium and a simulated water environment was described with a continuum model (PCM) the calculations were performed within the framework of density functional theory (DFT). Calculations related to the occupied orbitals of higher energy showed that Ag+ has a tendency to interact with the nitrile groups (-NH). The negative values of the Gibbs free energies show that the interaction process between amino acids-Ag+ in both media occurs spontaneously. There is a decrease in Gibbs free energy from the amino acid-Ag+ interactions immersed in a water solvation simulator.
Collapse
|
8
|
Chen M, Liu X. The Preparation of Cu(II)- and Ag(I)-responsive Carbon Nanodots from the Right Amino-acid Carbon Source. J Fluoresc 2021; 31:1153-1160. [PMID: 33978883 DOI: 10.1007/s10895-021-02742-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Accepted: 05/03/2021] [Indexed: 11/24/2022]
Abstract
Carbon nanodots (CDs) have exhibited excellent sensing capability for various metal ions. However, it is difficult to determine the selectivity of CDs to metal ions. In this work, we chose appropriate carbon source to design CD sensors against Cu(II) and Ag(I). Glycine, histidine and leucine have been confirmed to form complexes with Cu(II) and Ag(I), and were applied to prepare CDs using microwave heating method. The as-prepared CDs inherited the specific ion-binding capability from their carbon source and could response to both Cu(II) and Ag(I). The response sensitivity corresponded to the binding energy between the carbon source and metal ions. These experimental results are very important for the further design of CD sensors for a large variety of analytes.
Collapse
Affiliation(s)
- Manling Chen
- Liaoning Province Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Materials, College of Chemistry, Liaoning University, Shenyang, 110036, People's Republic of China
| | - Xue Liu
- Liaoning Province Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Materials, College of Chemistry, Liaoning University, Shenyang, 110036, People's Republic of China.
| |
Collapse
|
9
|
Synergistic Antibacterial Effect of Casein-AgNPs Combined with Tigecycline against Acinetobacter baumannii. Polymers (Basel) 2021; 13:polym13091529. [PMID: 34068784 PMCID: PMC8126194 DOI: 10.3390/polym13091529] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 05/04/2021] [Accepted: 05/05/2021] [Indexed: 01/23/2023] Open
Abstract
Acinetobacter baumannii (A. baumannii) is a common and challenging pathogen of nosocomial infections, due to its ability to survive on inanimate objects, desiccation tolerance, and resistance to disinfectants. In this study, we investigated an antibacterial strategy to combat A. baumannii via the combination of antibiotics and silver protein. This strategy used a functional platform consisting of silver nanoparticles (AgNPs) resurrected from silver-based calcium thiophosphate (SSCP) through casein and arginine. Then, the silver protein was combined with tigecycline, the first drug in glycylcycline antibiotic, to synergistically inhibit the viability of A. baumannii. The synergistic antibacterial activity was confirmed by the 96-well checkerboard method to determine their minimum inhibitory concentrations (MIC) and calculated for the combination index (CI). The MIC of the combination of silver protein and tigecycline (0.31 mg/mL, 0.16 µg/mL) was significantly lower than that of the individual MIC, and the CI was 0.59, which indicates a synergistic effect. Consequently, we integrated the detailed synergistic antibacterial properties when silver protein was combined with tigecycline. The result could make for a promising approach for the treatment of A. baumannii.
Collapse
|
10
|
Naaz F, Farooq U, Khan MAM, Ahmad T. Multifunctional Efficacy of Environmentally Benign Silver Nanospheres for Organic Transformation, Photocatalysis, and Water Remediation. ACS OMEGA 2020; 5:26063-26076. [PMID: 33073133 PMCID: PMC7558020 DOI: 10.1021/acsomega.0c03584] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Accepted: 09/15/2020] [Indexed: 06/11/2023]
Abstract
Highly crystalline and monophasic silver nanospheres with a high specific surface area of 57 m2/g have been synthesized by an environmentally benign rapid chemical reduction using l-alanine for catalytic transformation, photocatalytic degradation, and bacterial disinfection, which can provide an ample strategy for water remediation. Electron microscopic analysis confirms the spherical morphology of as-prepared silver nanoparticles with an average grain size of 20 nm. Silver nanospheres showed excellent catalytic activity for the catalytic hydrogenation and conversion (95.6%) of 4-nitrophenol to 4-aminophenol. Significant photocatalytic degradation proficiency was also shown for methylene blue (94.5%) and rhodamine B (96.3%) dyes under solar irradiation. The antibacterial behavior of Ala-Ag nanospheres was demonstrated through the disk diffusion antibacterial assay against Gram-positive (Escherichia coli) and Gram-negative (Staphylococcus aureus) bacteria. Multifunctional efficiency of as-prepared Ala-Ag nanospheres for water remediation has also been established.
Collapse
Affiliation(s)
- Farha Naaz
- Nanochemistry
Laboratory, Department of Chemistry, Jamia
Millia Islamia, New Delhi 110025, India
| | - Umar Farooq
- Nanochemistry
Laboratory, Department of Chemistry, Jamia
Millia Islamia, New Delhi 110025, India
| | - M. A. Majeed Khan
- King
Abdullah Institute for Nanotechnology, King
Saud University, Riyadh 11451, Saudi Arabia
| | - Tokeer Ahmad
- Nanochemistry
Laboratory, Department of Chemistry, Jamia
Millia Islamia, New Delhi 110025, India
| |
Collapse
|
11
|
Du N, Wu Q, Chen L, Zhang G, Liu X. Fluorescent carbon nanodots-based artificial tongue for determining and discriminating cigarettes. JOURNAL OF HAZARDOUS MATERIALS 2020; 384:121118. [PMID: 31810807 DOI: 10.1016/j.jhazmat.2019.121118] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2019] [Revised: 08/28/2019] [Accepted: 08/28/2019] [Indexed: 06/10/2023]
Abstract
Smoking can cause cigarette-related diseases and pose serious threat to human health. Its dangers can be effectively controlled by discriminating cigarettes and monitoring cigarette quality. Herein, a kind of artificial tongue technique based on the indicator displacement assay (IDA) was developed and applied to determine and discriminate cigarettes and their main ingredients (saccharides, organic acids and nicotine). This method was constructed using carbon nanodots (CDs) as a fluorescent indicator and various concentrations of silver ion (Ag+) as a fluorescent regulator. A cigarette extracting solution was prepared to interact with an artificial tongue and produce fluorescence fingerprints. Twenty-nine kinds of cigarettes can be well discriminated in terms of category (flue-cured cigarette, blended cigarette and cigar), brand, origin (domestic or foreign cigarettes) after processing and visualizing the response fingerprints. The artificial tongue fluorescent sensor array can sensitively detect nine kinds of tobacco-based chemical ingredients and discriminate them between different concentrations. The as-prepared fluorescent artificial tongue is a promising platform for monitoring cigarette quality and controlling the harmful effects of smoking because of its cheap material requirements, simple operation, and good performance.
Collapse
Affiliation(s)
- Na Du
- Liaoning Province Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Materials, College of Chemistry, Liaoning University, Shenyang, 110036 PR China
| | - Qiuhua Wu
- Liaoning Province Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Materials, College of Chemistry, Liaoning University, Shenyang, 110036 PR China
| | - Lijiang Chen
- College of Pharmacy, Liaoning University, Shenyang, 110036 PR China
| | - Guolin Zhang
- Liaoning Province Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Materials, College of Chemistry, Liaoning University, Shenyang, 110036 PR China.
| | - Xue Liu
- Liaoning Province Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Materials, College of Chemistry, Liaoning University, Shenyang, 110036 PR China.
| |
Collapse
|
12
|
Gas-aggregated Ag nanoparticles for detection of small molecules using LDI MS. Anal Bioanal Chem 2019; 412:1037-1047. [DOI: 10.1007/s00216-019-02329-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Revised: 11/30/2019] [Accepted: 12/04/2019] [Indexed: 01/04/2023]
|
13
|
Devi TB, Mohanta D, Ahmaruzzaman M. Biomass derived activated carbon loaded silver nanoparticles: An effective nanocomposites for enhanced solar photocatalysis and antimicrobial activities. J IND ENG CHEM 2019. [DOI: 10.1016/j.jiec.2019.03.032] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
14
|
Silver cluster–amino acid interactions: a quantum-chemical study. Amino Acids 2019; 51:855-864. [DOI: 10.1007/s00726-019-02728-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2018] [Accepted: 03/18/2019] [Indexed: 12/26/2022]
|
15
|
Owen CJ, Boles GC, Berden G, Oomens J, Armentrout PB. Experimental and theoretical investigations of infrared multiple photon dissociation spectra of lysine complexes with Zn 2+ and Cd 2. EUROPEAN JOURNAL OF MASS SPECTROMETRY (CHICHESTER, ENGLAND) 2019; 25:97-111. [PMID: 30526028 DOI: 10.1177/1469066718792902] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The gas-phase structures of zinc and cadmium complexes of lysine (Lys) are investigated via a combination of infrared multiple photon dissociation action spectroscopy and ab initio quantum chemical calculations. In order to unambiguously identify the experimentally observed species, [Zn(Lys-H)]+ and CdCl+(Lys), the action spectra were compared to linear absorption spectra calculated at the B3LYP level of theory, using 6-311+G(d,p) and def2-TVZP basis sets for the zinc and cadmium systems, respectively. Single point energies were also calculated at the B3LYP, B3P86, MP2, and B3LYP-GD3BJ (accounting for empirical dispersion) levels of theory using larger basis sets. Identification of the experimentally formed isomers is possible through good agreement between infrared multiple photon dissociation action spectra and the theoretically predicted spectra. The [Zn(Lys-H)]+ complex adopts a tridentate orientation involving the amino acid backbone amine and deprotonated carboxylic acid groups as well as the side-chain amine group, [Nα,CO-,Nɛ]. The CdCl+(Lys) complex similarly adopts a tridentate chelation involving the amino acid backbone amine and carbonyl groups, as well as the side-chain amine group, [Nα,CO,Nɛ]. In both cases, the identified complexes are the lowest energy gas-phase structures at all levels of theory.
Collapse
Affiliation(s)
- Cameron J Owen
- 1 Department of Chemistry, University of Utah, Salt Lake City, USA
| | - Georgia C Boles
- 1 Department of Chemistry, University of Utah, Salt Lake City, USA
| | - Giel Berden
- 2 FELIX Laboratory, Institute for Molecules and Materials, Radboud University, Nijmegen, The Netherlands
| | - Jos Oomens
- 2 FELIX Laboratory, Institute for Molecules and Materials, Radboud University, Nijmegen, The Netherlands
- 3 Van't Hoff Institute for Molecular Sciences, University of Amsterdam, Amsterdam, The Netherlands
| | - P B Armentrout
- 1 Department of Chemistry, University of Utah, Salt Lake City, USA
| |
Collapse
|
16
|
Saranya V, Shankar R, Vijayakumar S. Structural exploration of viral matrix protein 40 interaction with the transition metal ions (Ag+ and Cu2+). J Biomol Struct Dyn 2018; 37:2875-2896. [DOI: 10.1080/07391102.2018.1498803] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- V. Saranya
- Department of Physics, Bharathiar University, Coimbatore, India
| | - R. Shankar
- Department of Physics, Bharathiar University, Coimbatore, India
| | - S. Vijayakumar
- Department of Medical Physics, Bharathiar University, Coimbatore, India
| |
Collapse
|
17
|
Xiang L, Fang J, Cheng H. Toxicity of silver nanoparticles to green algae M. aeruginosa and alleviation by organic matter. ENVIRONMENTAL MONITORING AND ASSESSMENT 2018; 190:667. [PMID: 30349996 DOI: 10.1007/s10661-018-7022-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Accepted: 10/02/2018] [Indexed: 06/08/2023]
Abstract
Silver nanoparticles (AgNPs) have been increasingly used in a wide range of consumer products over the last decade. The release of AgNPs into aquatic ecosystems raises concerns about their safety and environmental toxicity, which have been the subject of recent studies. Herein, we assess the toxicity of AgNPs to the common algae Microcystis. aeruginosa. A toxicological response by M. aeruginosa was exhibited at an early stage of exposure to AgNPs, which were also toxic to its growth, photosynthetic, and membrane systems. The attachment of AgNPs to microalgae is likely the main mechanism by which it damages cell membranes. Dissolved Ag ions, originating from internalized AgNPs, seem to directly target the photosynthetic system. We also found that several humus-related indicators of water quality (HIX and β/α) were related to reduced AgNPs toxicity. Graphical abstract.
Collapse
Affiliation(s)
- Li Xiang
- School of Resource and Environment Engineering, Anhui University, Hefei, 230601, People's Republic of China
- Department of Environment and Energy Engineering, Anhui Jianzhu University, Hefei, 230601, People's Republic of China
| | - Juan Fang
- Department of Environment and Energy Engineering, Anhui Jianzhu University, Hefei, 230601, People's Republic of China
| | - Hua Cheng
- School of Resource and Environment Engineering, Anhui University, Hefei, 230601, People's Republic of China.
| |
Collapse
|
18
|
Foreman DJ, Betancourt SK, Pilo AL, McLuckey SA. Novel Peptide Ion Chemistry Associated with Gold (I) Cationization: Preferential Cleavage at Lysine Residues. INTERNATIONAL JOURNAL OF MASS SPECTROMETRY 2018; 427:114-122. [PMID: 29881326 PMCID: PMC5985815 DOI: 10.1016/j.ijms.2017.11.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Novel peptide ion chemistry associated with gold (I) cationization is described. Cation switching ion/ion reactions, involving gold dichloride reagent anion, [AuCl2]-, are used to replace protons with a gold (I) cation on a polypeptide. Collision induced dissociation of aurated, lysine-containing peptides results in the elimination of gold hydride and ammonia, generating a [M - H - NH3]+ oxidized species. The oxidized product is likely a cyclic iminium ion. This fragmentation pathway is specific to lysine side-chains as polypeptides containing arginine or histidine in the absence of lysine were not observed to form the oxidized product. While oxidation can occur on N-terminal, internal, and C-terminal lysine residues, it is observed to a lesser extent at lysines found at internal and C-terminal positions. However, isolation and subsequent activation of the [M - H - NH3]+ species derived from the internal or C-terminal positions results in preferential cleavage N-terminal to the oxidized lysine residue. This chemistry has been demonstrated using a variety of model peptides and has also been applied to the analysis of melittin.
Collapse
Affiliation(s)
| | | | | | - Scott A. McLuckey
- Address reprint requests to: Dr. Scott A. McLuckey, 560 Oval Drive, Department of Chemistry, Purdue University, West Lafayette, IN 47907-2084, USA, Phone: (765) 494-5270, Fax: (765) 494-0239,
| |
Collapse
|
19
|
Chakraborty I, Feliu N, Roy S, Dawson K, Parak WJ. Protein-Mediated Shape Control of Silver Nanoparticles. Bioconjug Chem 2018; 29:1261-1265. [DOI: 10.1021/acs.bioconjchem.8b00034] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Indranath Chakraborty
- Fachbereich Physik, Philipps Universität Marburg, 35037 Marburg, Germany
- Fachbereich Physik und Chemie, and Center for Hybrid Nanostructure (CHyN), Universität Hamburg, 22761 Hamburg, Germany
| | - Neus Feliu
- Fachbereich Physik und Chemie, and Center for Hybrid Nanostructure (CHyN), Universität Hamburg, 22761 Hamburg, Germany
- Department of Laboratory Medicine (LABMED), Karolinska Institutet, 171 77 Stockholm, Sweden
| | - Sathi Roy
- Fachbereich Physik, Philipps Universität Marburg, 35037 Marburg, Germany
- Fachbereich Physik und Chemie, and Center for Hybrid Nanostructure (CHyN), Universität Hamburg, 22761 Hamburg, Germany
| | - Kenneth Dawson
- Centre for BioNano Interactions, School of Chemistry and Chemical Biology, University College Dublin, Dublin 4, Ireland
| | - Wolfgang J. Parak
- Fachbereich Physik, Philipps Universität Marburg, 35037 Marburg, Germany
- Fachbereich Physik und Chemie, and Center for Hybrid Nanostructure (CHyN), Universität Hamburg, 22761 Hamburg, Germany
- CIC Biomagune, 20014 San Sebastian, Spain
| |
Collapse
|
20
|
|
21
|
Chandra A, Singh M. Biosynthesis of amino acid functionalized silver nanoparticles for potential catalytic and oxygen sensing applications. Inorg Chem Front 2018. [DOI: 10.1039/c7qi00569e] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
A green approach to the biosynthesis of amino acid functionalized silver nanoparticles (AgNPs) using Neem gum is reported herein.
Collapse
Affiliation(s)
- Abhishek Chandra
- School of Chemical Sciences
- Central University of Gujarat
- Gandhinagar-382030
- India
| | - Man Singh
- School of Chemical Sciences
- Central University of Gujarat
- Gandhinagar-382030
- India
| |
Collapse
|
22
|
Lataifeh A, Kraatz HB, Goncharova LV. Core–Shell Nanoparticles Containing Peptide Dendrimers. J Inorg Organomet Polym Mater 2017. [DOI: 10.1007/s10904-017-0689-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
23
|
Guo Y, Zeng X, Yuan H, Huang Y, Zhao Y, Wu H, Yang J. Chiral recognition of phenylglycinol enantiomers based on N-acetyl-l-cysteine capped CdTe quantum dots in the presence of Ag . SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2017; 183:23-29. [PMID: 28432917 DOI: 10.1016/j.saa.2017.04.014] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Revised: 04/11/2017] [Accepted: 04/14/2017] [Indexed: 06/07/2023]
Abstract
In this study, a novel method for chiral recognition of phenylglycinol (PG) enantiomers was proposed. Firstly, water-soluble N-acetyl-l-cysteine (NALC)-capped CdTe quantum dots (QDs) were synthesized and experiment showed that the fluorescence intensity of the reaction system slightly enhancement when added PG enantiomers to NALC-capped CdTe quantum dots (QDs), but the R-PG and S-PG could not be distinguished. Secondly, when there was Ag+ presence in the reaction system, the experiment result was extremely interesting, the PG enantiomers cloud make NALC-capped CdTe QDs produce different fluorescence signal, in which the fluorescence of S-PG+Ag++NALC-CdTe system was significantly enhanced, and the fluorescence of R-PG+Ag++NALC-CdTe system was markedly decreased. Thirdly, all the enhanced and decreased of the fluorescence intensity were directly proportional to the concentration of R-PG and S-PG in the linearly range 10-5-10-7mol·L-1, respectively. So, the new method for simultaneous determination of the PG enantiomers was built too. The experiment result of the method was satisfactory with the detection limit of PG can reached 10-7mol·L-1 and the related coefficient of S-PG and R-PG are 0.995 and 0.980, respectively. The method was highly sensitive, selective and had wider detection range compared with other methods.
Collapse
Affiliation(s)
- Yuan Guo
- Key Laboratory of Water Environment Evolution and Pollution Control in Three Gorges Reservoir, Chongqing Three Gorges University, Wanzhou, Chongqing 404100, PR China
| | - Xiaoqing Zeng
- Key Laboratory of Water Environment Evolution and Pollution Control in Three Gorges Reservoir, Chongqing Three Gorges University, Wanzhou, Chongqing 404100, PR China
| | - Haiyan Yuan
- Key Laboratory of Water Environment Evolution and Pollution Control in Three Gorges Reservoir, Chongqing Three Gorges University, Wanzhou, Chongqing 404100, PR China
| | - Yunmei Huang
- Key Laboratory of Water Environment Evolution and Pollution Control in Three Gorges Reservoir, Chongqing Three Gorges University, Wanzhou, Chongqing 404100, PR China
| | - Yanmei Zhao
- Key Laboratory of Water Environment Evolution and Pollution Control in Three Gorges Reservoir, Chongqing Three Gorges University, Wanzhou, Chongqing 404100, PR China
| | - Huan Wu
- Key Laboratory of Water Environment Evolution and Pollution Control in Three Gorges Reservoir, Chongqing Three Gorges University, Wanzhou, Chongqing 404100, PR China
| | - Jidong Yang
- Key Laboratory of Water Environment Evolution and Pollution Control in Three Gorges Reservoir, Chongqing Three Gorges University, Wanzhou, Chongqing 404100, PR China; School of Chemistry and Chemical Engineering, Southwest University, Beibei, Chongqing 400715, PR China; School of Chemistry and Chemical Engineering, Yangtze Normal University, Fuling, Chongqing 408100, PR China.
| |
Collapse
|
24
|
Devi TB, Ahmaruzzaman M. Bioinspired Green and Facile Fabrication of Au@Ag@AgCl Hybrid Nanoparticles and Their Catalytic and Antimicrobial Properties. ChemistrySelect 2017. [DOI: 10.1002/slct.201700601] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Thengujam Babita Devi
- Department of Chemistry; National Institute of Technology; Silchar- 788010, Assam India
| | - Mohammed Ahmaruzzaman
- Department of Chemistry; National Institute of Technology; Silchar- 788010, Assam India
| |
Collapse
|
25
|
Gunawan C, Marquis CP, Amal R, Sotiriou GA, Rice SA, Harry EJ. Widespread and Indiscriminate Nanosilver Use: Genuine Potential for Microbial Resistance. ACS NANO 2017; 11:3438-3445. [PMID: 28339182 DOI: 10.1021/acsnano.7b01166] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
In this era of increasing antibiotic resistance, the use of alternative antimicrobials such as silver has become more widespread. Superior antimicrobial activity has been provided through fabrication of silver nanoparticles or nanosilver (NAg), which imparts cytotoxic actions distinct from those of bulk silver. In the wake of the recent discoveries of bacterial resistance to NAg and its rising incorporation in medical and consumer goods such as wound dressings and dietary supplements, we argue that there is an urgent need to monitor the prevalence and spread of NAg microbial resistance. In this Perspective, we describe how the use of NAg in commercially available products facilitates prolonged microorganism exposure to bioavailable silver, which underpins the development of resistance. Furthermore, we advocate for a judicial approach toward NAg use in order to preserve its efficacy and to avoid environmental disruption.
Collapse
Affiliation(s)
- Cindy Gunawan
- The iThree Institute, University of Technology Sydney , Sydney, NSW 2007, Australia
| | | | | | - Georgios A Sotiriou
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet , 17177 Stockholm, Sweden
| | | | - Elizabeth J Harry
- The iThree Institute, University of Technology Sydney , Sydney, NSW 2007, Australia
| |
Collapse
|
26
|
SATHEESHKUMAR E, YANG J, SRINIVASADESIKAN V, LIN MC. Simultaneous Production and Surface Functionalization of Silver Nanoparticles for Label-free Colorimetric Detection of Copper Ion. ANAL SCI 2017; 33:1115-1121. [DOI: 10.2116/analsci.33.1115] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
| | - Jyisy YANG
- Department of Chemistry, National Chung Hsing University
| | - Venkatesan SRINIVASADESIKAN
- Center for Interdisciplinary Molecular Science and Department of Applied Chemistry, National Chiao Tung University
| | - Ming-Chang LIN
- Center for Interdisciplinary Molecular Science and Department of Applied Chemistry, National Chiao Tung University
| |
Collapse
|
27
|
Gupta SL, Dhiman V, Jayasekharan T, Sahoo NK. Analysis of argentinated peptide complexes using matrix-assisted laser desorption/ionization time-of-flight mass spectrometry: Peptide = oxytocin, arg(8) -vasopressin, bradykinin, bombesin, somatostatin, neurotensin. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2016; 30:1313-1322. [PMID: 27173113 DOI: 10.1002/rcm.7562] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2015] [Revised: 03/11/2016] [Accepted: 03/12/2016] [Indexed: 06/05/2023]
Abstract
RATIONALE The increased use of silver nanoparticles (AgNPs) for various biological applications, and over-expression of various peptide receptors in different tumors/cancer cells, necessitate the need for dedicated investigations on the intrinsic binding ability of Ag with various biologically important peptides for better understanding of AgNPs-peptide interactions and for the future development of contrasting agents as well as drugs for imaging/biomedical applications. METHODS The [M+(Ag)n ](+) complexes are prepared and characterized using matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOFMS). RESULTS Silver complexes of the peptides [M+(Ag)n ](+) , where M = oxytocin, arg(8) -vasopressin, bradykinin, bombesin, somatostatin, and neurotensin, have been investigated for their intrinsic Ag(+) -binding ability. Unusual binding of up to seven Ag(+) with these small peptides is observed. The mass spectra show n = 1-5 for bombesin and somatostatin, n = 1-6 for bradykinin and arg(8) -vasopressin, and n = 1-7 for oxytocin and neurotensin. In addition, oxytocin and arg(8) -vasopressin show the formation of dimers and their complexes [M2 +(Ag)n ](+) with n = 1-8 and n = 1-5, respectively. The possible amino acid residues responsible for Ag(+) binding in each peptide have been identified on the basis of density functional theory (DFT)-calculated binding energy values of Ag(+) towards individual amino acids. CONCLUSIONS Mass spectrometric evidence indicates that the peptides, viz., oxytocin, arg(8) -vasopressin, bradykinin, bombesin, somatostatin, and neurotensin, show greater affinity for Ag(+) . Hence, they may be used as carriers for AgNPs in targeted drug delivery as well as an alternative for iodinated contrasting agents in dual energy X-ray imaging techniques. Radio-labeled Ag with these peptides can also be used in radio-pharmaceuticals for diagnostic and therapeutic applications. Copyright © 2016 John Wiley & Sons, Ltd.
Collapse
Affiliation(s)
- Shyam L Gupta
- Atomic & Molecular Physics Division, Physics Group, Bhabha Atomic Research Centre, Trombay, Mumbai, 400 085, India
| | - Vikas Dhiman
- Atomic & Molecular Physics Division, Physics Group, Bhabha Atomic Research Centre, Trombay, Mumbai, 400 085, India
| | - T Jayasekharan
- Atomic & Molecular Physics Division, Physics Group, Bhabha Atomic Research Centre, Trombay, Mumbai, 400 085, India
| | - N K Sahoo
- Atomic & Molecular Physics Division, Physics Group, Bhabha Atomic Research Centre, Trombay, Mumbai, 400 085, India
| |
Collapse
|
28
|
Wang Y, Wan J, Miron RJ, Zhao Y, Zhang Y. Antibacterial properties and mechanisms of gold-silver nanocages. NANOSCALE 2016; 8:11143-52. [PMID: 27180869 DOI: 10.1039/c6nr01114d] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Despite the number of antibiotics used in routine clinical practice, bacterial infections continue to be one of the most important challenges faced in humans. The main concerns arise from the continuing emergence of antibiotic-resistant bacteria and the difficulties faced with the pharmaceutical development of new antibiotics. Thus, advancements in the avenue of novel antibacterial agents are essential. In this study, gold (Au) was combined with silver (Ag), a well-known antibacterial material, to form silver nanoparticles producing a gold-silver alloy structure with hollow interiors and porous walls (gold-silver nanocage). This novel material was promising in antibacterial applications due to its better biocompatibility than Ag nanoparticles, potential in photothermal effects and drug delivery ability. The gold-silver nanocage was then tested for its antibacterial properties and the mechanism involved leading to its antibacterial properties. This study confirms that this novel gold-silver nanocage has broad-spectrum antibacterial properties exerting its effects through the destruction of the cell membrane, production of reactive oxygen species (ROS) and induction of cell apoptosis. Therefore, we introduce a novel gold-silver nanocage that serves as a potential nanocarrier for the future delivery of antibiotics.
Collapse
Affiliation(s)
- Yulan Wang
- State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan 430079, P. R. China.
| | | | | | | | | |
Collapse
|
29
|
An insight into the interaction of L-proline with the transition metal cations Fe(2+), Co(2+), Ni(2+): a gas phase theoretical study. J Mol Model 2015; 22:11. [PMID: 26676722 DOI: 10.1007/s00894-015-2865-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2015] [Accepted: 11/15/2015] [Indexed: 10/22/2022]
Abstract
The interaction of Fe(2+), Co(2+), and Ni(2+) with L-proline has been studied. Three modes of interaction have been considered: salt bridged (SB), involving binding in a bi-dentate manner through the carboxylate group of L-proline, charge solvated 1 (CS1) involving carbonyl and hydroxyl oxygen, and charge solvated 2 (CS2) involving carbonyl oxygen and the lone pair of the nitrogen atom. All calculations including geometry optimization, metal ion affinities (MIAs), and frequency calculations of the binding structures of Fe(2+), Co(2+), and Ni(2+) to L-proline were calculated using the hybrid density functional theory (DFT-B3LYP) method. All three cations were found to bind preferentially in a zwitterionic (SB) coordination pattern with the metal ion affinity in the order Ni(2+) ˃ Co(2+) ˃ Fe(2+) in all binding forms. The nature of the binding interaction between metal cations and L-proline was found to be mainly electrostatic. Comparison of the infrared vibrations of the C=O, the N-H and the O-H groups of free L-proline with L-proline-M(2+) in both CS1 and CS2 complex structures indicated a considerable shift to lower frequency during complexation. In order to gain more insight into the nature of the interaction of L-proline with group VIIIB metal ions, comparison of the interaction of L-proline with other cations such as (Li(+), Na(+), K(+), Be(2+), Mg(2+), and Ca(2+)) was made. Graphical Abstract L-proline with the transition metal cations Fe(2+), Co(2+), Ni(2.)
Collapse
|
30
|
Reversibly Switching Silver Hierarchical Structures via Reaction Kinetics. Sci Rep 2015; 5:14942. [PMID: 26442867 PMCID: PMC4595744 DOI: 10.1038/srep14942] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2015] [Accepted: 09/07/2015] [Indexed: 11/09/2022] Open
Abstract
Here we report a study on controllable synthesis of hierarchical silver structures via regulating reaction kinetics. Silver particles with various morphologies are synthesized by a solution-based reduction approach at the addition of amino acids. The amino acid is used to coordinate with silver ions to slow down the reduction of silver ions. With the increase of glycine concentration, the morphologies of silver particles switch from dendrites, to flowers and to compacted spheres, which is attributed to the decrease of reaction rate as a result of the coordination. Three more amino acids are examined and confirms the role of reaction kinetic in shaping silver particles. Furthermore, by increasing the concentration of the reductant, the silver morphologies change from compact spheres to loose flowers as a result of the increase of reaction rate. Therefore the silver hierarchical structure can be reversibly switched by reaction kinetics. The silver particles synthesized are tested for surface enhanced Raman scattering (SERS) property and the dendritic particles present a remarkable SERS activity. This study shows that reaction kinetics is a powerful tool to tune hierarchical structures of silver particles, which is expected to be transferable to other material systems.
Collapse
|
31
|
Brunetti G, Donner E, Laera G, Sekine R, Scheckel KG, Khaksar M, Vasilev K, De Mastro G, Lombi E. Fate of zinc and silver engineered nanoparticles in sewerage networks. WATER RESEARCH 2015; 77:72-84. [PMID: 25841090 DOI: 10.1016/j.watres.2015.03.003] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2014] [Revised: 02/20/2015] [Accepted: 03/05/2015] [Indexed: 05/29/2023]
Abstract
Engineered zinc oxide (ZnO) and silver (Ag) nanoparticles (NPs) used in consumer products are largely released into the environment through the wastewater stream. Limited information is available regarding the transformations they undergo during their transit through sewerage systems before reaching wastewater treatment plants. To address this knowledge gap, laboratory-scale systems fed with raw wastewater were used to evaluate the transformation of ZnO- and Ag-NPs within sewerage transfer networks. Two experimental systems were established and spiked with either Ag- and ZnO-NPs or with their dissolved salts, and the wastewater influent and effluent samples from both systems were thoroughly characterised. X-ray absorption spectroscopy (XAS) was used to assess the extent of the chemical transformation of both forms of Zn and Ag during transport through the model systems. The results indicated that both ZnO- and Ag-NPs underwent significant transformation during their transport through the sewerage network. Reduced sulphur species represented the most important endpoint for these NPs in the sewer with slight differences in terms of speciation; ZnO converted largely to Zn sulfide, while Ag was also sorbed to cysteine and histidine. Importantly, both ionic Ag and Ag-NPs formed secondary Ag sulfide nanoparticles in the sewerage network as revealed by TEM analysis. Ag-cysteine was also shown to be a major species in biofilms. These results were verified in the field using recently developed nanoparticle in situ deployment devices (nIDDs) which were exposed directly to sewerage network conditions by immersing them into a municipal wastewater network trunk sewer and then retrieving them for XAS analysis.
Collapse
Affiliation(s)
- Gianluca Brunetti
- Centre for Environmental Risk Assessment and Remediation, University of South Australia, Building X, Mawson Lakes Campus, South Australia 5095, Australia; Department of Agricultural and Environmental Science - DISAAT, University of Bari Aldo Moro, 165/A Via G. Amendola, 70126 Bari, Italy.
| | - Erica Donner
- Centre for Environmental Risk Assessment and Remediation, University of South Australia, Building X, Mawson Lakes Campus, South Australia 5095, Australia.
| | - Giuseppe Laera
- Istituto di Ricerca Sulle Acque, Consiglio Nazionale delle Ricerche, Viale F. De Blasio 5, Bari 70123, Italy.
| | - Ryo Sekine
- Centre for Environmental Risk Assessment and Remediation, University of South Australia, Building X, Mawson Lakes Campus, South Australia 5095, Australia.
| | - Kirk G Scheckel
- National Risk Management Research Laboratory, US Environmental Protection Agency, 5995 Centre Hill Avenue, Cincinnati, OH 45224, USA.
| | - Maryam Khaksar
- Mawson Institute, University of South Australia, Building V, Mawson Lakes Campus, South Australia 5095, Australia.
| | - Krasimir Vasilev
- Mawson Institute, University of South Australia, Building V, Mawson Lakes Campus, South Australia 5095, Australia.
| | - Giuseppe De Mastro
- Department of Agricultural and Environmental Science - DISAAT, University of Bari Aldo Moro, 165/A Via G. Amendola, 70126 Bari, Italy.
| | - Enzo Lombi
- Centre for Environmental Risk Assessment and Remediation, University of South Australia, Building X, Mawson Lakes Campus, South Australia 5095, Australia.
| |
Collapse
|
32
|
Agnihotri S, Bajaj G, Mukherji S, Mukherji S. Arginine-assisted immobilization of silver nanoparticles on ZnO nanorods: an enhanced and reusable antibacterial substrate without human cell cytotoxicity. NANOSCALE 2015; 7:7415-7429. [PMID: 25830178 DOI: 10.1039/c4nr06913g] [Citation(s) in RCA: 87] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Silver-based hybrid nanomaterials are gaining interest as potential alternatives for conventional antimicrobial agents. Herein, we present a simple, facile and eco-friendly approach for the deposition of silver nanoparticles (AgNPs) on ZnO nanorods, which act as a nanoreactor for in situ synthesis and as an immobilizing template in the presence of arginine. The presence of arginine enhanced the stability of ZnO deposition on the glass substrate by hindering the dissolution of zinc under alkaline conditions. Various Ag/ZnO hybrid nanorod (HNR) samples were screened to obtain a high amount of silver immobilization on the ZnO substrate. Ag/ZnO HNRs displayed potent antibacterial ability and could achieve 100% kill for both Escherichia coli and Bacillus subtilis strains under various test conditions. The hybrid material mediated its dual mode of antibacterial action through direct contact-killing and release of silver ions/nanoparticles and showed superior bactericidal performance compared to pure ZnO nanorods and colloidal AgNPs. No significant decline in antibacterial efficacy was observed even after the same substrate was repeatedly reused multiple times. Interestingly, the amount of Ag and Zn release was much below their maximal limit in drinking water, thus preventing potential health hazards. Immobilized AgNPs showed no cytotoxic effects on the human hepatocarcinoma cell line (HepG2). Moreover, treating cells with the antibacterial substrate for 24 hours did not lead to significant generation of reactive oxygen species (ROS). The good biocompatibility and bactericidal efficacy would thus make it feasible to utilize this immobilization strategy for preparing new-generation antibacterial coatings.
Collapse
Affiliation(s)
- Shekhar Agnihotri
- Centre for Research in Nanotechnology and Science, Indian Institute of Technology-Bombay, Powai, Mumbai 400076, India
| | | | | | | |
Collapse
|
33
|
Biomedical Uses of Silver Nanoparticles: From Roman Wine Cups to Biomedical Devices. SILVER NANOPARTICLE APPLICATIONS 2015. [DOI: 10.1007/978-3-319-11262-6_5] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
|
34
|
Carnosine complexes and binding energies to some biologically relevant metals and platinum containing anticancer drugs. Inorganica Chim Acta 2014. [DOI: 10.1016/j.ica.2014.05.039] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
|
35
|
Grossert JS, Cubero Herrera L, Ramaley L, Melanson JE. Studying the chemistry of cationized triacylglycerols using electrospray ionization mass spectrometry and density functional theory computations. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2014; 25:1421-1440. [PMID: 24867430 DOI: 10.1007/s13361-014-0917-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2014] [Revised: 04/01/2014] [Accepted: 04/02/2014] [Indexed: 06/03/2023]
Abstract
Analysis of triacylglycerols (TAGs), found as complex mixtures in living organisms, is typically accomplished using liquid chromatography, often coupled to mass spectrometry. TAGs, weak bases not protonated using electrospray ionization, are usually ionized by adduct formation with a cation, including those present in the solvent (e.g., Na(+)). There are relatively few reports on the binding of TAGs with cations or on the mechanisms by which cationized TAGs fragment. This work examines binding efficiencies, determined by mass spectrometry and computations, for the complexation of TAGs to a range of cations (Na(+), Li(+), K(+), Ag(+), NH4(+)). While most cations bind to oxygen, Ag(+) binding to unsaturation in the acid side chains is significant. The importance of dimer formation, [2TAG + M](+) was demonstrated using several different types of mass spectrometers. From breakdown curves, it became apparent that two or three acid side chains must be attached to glycerol for strong cationization. Possible mechanisms for fragmentation of lithiated TAGs were modeled by computations on tripropionylglycerol. Viable pathways were found for losses of neutral acids and lithium salts of acids from different positions on the glycerol moiety. Novel lactone structures were proposed for the loss of a neutral acid from one position of the glycerol moiety. These were studied further using triple-stage mass spectrometry (MS(3)). These lactones can account for all the major product ions in the MS(3) spectra in both this work and the literature, which should allow for new insights into the challenging analytical methods needed for naturally occurring TAGs.
Collapse
Affiliation(s)
- J Stuart Grossert
- National Research Council Canada, Halifax, Nova Scotia, B3H 3Z1, Canada,
| | | | | | | |
Collapse
|
36
|
Shi J, Sun X, Zou X, Zhang H. Amino acid-dependent transformations of citrate-coated silver nanoparticles: impact on morphology, stability and toxicity. Toxicol Lett 2014; 229:17-24. [PMID: 24910988 DOI: 10.1016/j.toxlet.2014.06.014] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2014] [Revised: 06/04/2014] [Accepted: 06/05/2014] [Indexed: 11/19/2022]
Abstract
Humans face the risk of exposure to silver nanoparticles (AgNPs) due to their extensive application in consumer products. AgNPs can interact with many substances in the human body due to their chemically unstable nature and high activity properties, which might result in unknown hazards and even some serious diseases for humans. As the basic constituent element of human bodies, amino acids (AAs) differ in concentration and variety in different cells and tissues. Thus, understanding the transformation of citrate-coated AgNPs in the presence of AAs is crucial for determining their fate and toxicity in the human body. Our study focused on the transformation of the morphology, dissolution behavior and reaction product of AgNPs in different AA-containing systems and then evaluated the effect of these transformations on the cytotoxicity of AgNPs. The obtained results indicated that the addition of glycine with the lowest Ag(+) binding energy had little effect on the transformations and toxicity of AgNPs. While in the presence of histidine with higher Ag(+) binding energy, the Ag(+) release and particle size of AgNPs obviously increased. These transformations resulted in a decrease in the cytotoxicity of AgNPs due to the formation of Ag-His complex and the growth of AgNPs. Furthermore, l-cysteine with the highest Ag(+) binding energy could easily interact with AgNPs, transforming them completely to form [Ag(Cys)n](+) and Ag2S precipitates, which induced the largest decrease in AgNP toxicity. In summary, our results may provide useful information to understand the fate, transformation, and toxicity of citrate-coated AgNPs in the human body.
Collapse
Affiliation(s)
- Junpeng Shi
- Institute of Urban Environment, Chinese Academy of Sciences, Jimei Road 1799, Xiamen 361021, China
| | - Xia Sun
- Institute of Urban Environment, Chinese Academy of Sciences, Jimei Road 1799, Xiamen 361021, China
| | - Xiaoyan Zou
- Institute of Urban Environment, Chinese Academy of Sciences, Jimei Road 1799, Xiamen 361021, China
| | - Hongwu Zhang
- Institute of Urban Environment, Chinese Academy of Sciences, Jimei Road 1799, Xiamen 361021, China.
| |
Collapse
|
37
|
Choi LS, Mach T, Bayley H. Rates and stoichiometries of metal ion probes of cysteine residues within ion channels. Biophys J 2014; 105:356-64. [PMID: 23870257 DOI: 10.1016/j.bpj.2013.04.046] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2012] [Revised: 04/22/2013] [Accepted: 04/25/2013] [Indexed: 10/26/2022] Open
Abstract
Metal ion probes are used to assess the accessibility of cysteine side chains in polypeptides lining the conductive pathways of ion channels and thereby determine the conformations of channel states. Despite the widespread use of this approach, the chemistry of metal ion-thiol interactions has not been fully elucidated. Here, we investigate the modification of cysteine residues within a protein pore by the commonly used Ag(+) and Cd(2+) probes at the single-molecule level, and provide rates and stoichiometries that will be useful for the design and interpretation of accessibility experiments.
Collapse
Affiliation(s)
- Lai-Sheung Choi
- Department of Chemistry, University of Oxford, Oxford, United Kingdom
| | | | | |
Collapse
|
38
|
Dunbar RC. Spectroscopy of Metal-Ion Complexes with Peptide-Related Ligands. Top Curr Chem (Cham) 2014; 364:183-223. [DOI: 10.1007/128_2014_578] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
|
39
|
Sanader Ž, Mitrić R, Bonačić-Koutecký V, Bellina B, Antoine R, Dugourd P. The nature of electronic excitations at the metal–bioorganic interface illustrated on histidine–silver hybrids. Phys Chem Chem Phys 2014; 16:1257-61. [DOI: 10.1039/c3cp52712c] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
|
40
|
Yan S, Zhang L, Tang Y, Lv Y. Synthesis of water-soluble Ag2Se QDs as a novel resonance Rayleigh scattering sensor for highly sensitive and selective ConA detection. Analyst 2014; 139:4210-5. [DOI: 10.1039/c4an00579a] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Schematic illustration for fabricating TGA and glycine modified Ag2Se QDs for RRS detection of ConA.
Collapse
Affiliation(s)
- Shuguang Yan
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu, China
| | - Lichun Zhang
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu, China
| | - Yurong Tang
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu, China
| | - Yi Lv
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu, China
| |
Collapse
|
41
|
Rizzello L, Pompa PP. Nanosilver-based antibacterial drugs and devices: mechanisms, methodological drawbacks, and guidelines. Chem Soc Rev 2013; 43:1501-18. [PMID: 24292075 DOI: 10.1039/c3cs60218d] [Citation(s) in RCA: 466] [Impact Index Per Article: 42.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Despite the current advancement in drug discovery and pharmaceutical biotechnology, infection diseases induced by bacteria continue to be one of the greatest health problems worldwide, afflicting millions of people annually. Almost all microorganisms have, in fact, an intrinsic outstanding ability to flout many therapeutic interventions, thanks to their fast and easy-to-occur evolutionary genetic mechanisms. At the same time, big pharmaceutical companies are losing interest in new antibiotics development, shifting their capital investments in much more profitable research and development fields. New smart solutions are, thus, required to overcome such concerns, and should combine the feasibility of industrial production processes with cheapness and effectiveness. In this framework, nanotechnology-based solutions, and in particular silver nanoparticles (AgNPs), have recently emerged as promising candidates in the market as new antibacterial agents. AgNPs display, in fact, enhanced broad-range antibacterial/antiviral properties, and their synthesis procedures are quite cost effective. However, despite their increasing impact on the market, many relevant issues are still open. These include the molecular mechanisms governing the AgNPs-bacteria interactions, the physico-chemical parameters underlying their toxicity to prokaryotes, the lack of standardized methods and materials, and the uncertainty in the definition of general strategies to develop smart antibacterial drugs and devices based on nanosilver. In this review, we analyze the experimental data on the bactericidal effects of AgNPs, discussing the complex scenario and presenting the potential drawbacks and limitations in the techniques and methods employed. Moreover, after analyzing in depth the main mechanisms involved, we provide some general strategies/procedures to perform antibacterial tests of AgNPs, and propose some general guidelines for the design of antibacterial nanosystems and devices based on silver/nanosilver.
Collapse
Affiliation(s)
- Loris Rizzello
- Istituto Italiano di Tecnologia (IIT), Center for Bio-Molecular Nanotechnologies@UniLe, Via Barsanti, 73010 Arnesano (Lecce), Italy.
| | | |
Collapse
|
42
|
Chen Y, Chinthaka SDM, Rodgers MT. Silver cation affinities of monomeric building blocks of polyethers and polyphenols determined by guided ion beam tandem mass spectrometry. J Phys Chem A 2013; 117:8274-84. [PMID: 23914909 DOI: 10.1021/jp402224t] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Energy-resolved collision-induced dissociation (CID) of seven silver cation-ligand complexes, Ag(+)(L), with Xe is studied using guided ion beam tandem mass spectrometry techniques. The ligands, L, investigated are monomeric building blocks of polyethers and polyphenols including phenol, 2-hydroxyphenol, 3-hydroxyphenol, 4-hydroxyphenol, 2-hydroxymethyl phenol, 3-hydroxymethyl phenol, and 4-hydroxymethyl phenol. In all cases, Ag(+) is observed as the primary CID product, corresponding to endothermic loss of the intact neutral ligand. The kinetic-energy-dependent cross sections for CID of these Ag(+)(L) complexes are analyzed using an empirical threshold law to extract absolute 0 and 298 K Ag(+)-L bond dissociation energies (BDEs). Density functional theory calculations at the B3LYP/6-31G* level of theory are used to determine the structures of the neutral ligands and their complexes to Ag(+) using either the Stuttgart RSC 1997 valence basis set and effective core potential (SRSC ECP) or DZVP-DFT to describe Ag(+). Theoretical BDEs are determined at the B3LYP/6-311+G(2d,2p) level of theory again using the SRSC ECP or DZVP-DFT for Ag(+). For all systems, the most stable binding conformations found involve cation-π interactions when the SRSC ECP is used to describe Ag(+). When DZVP-DFT is employed, the most stable binding geometries remain cation-π complexes except for the complex to 2HP, where the ground-state conformer involves bidentate binding of Ag(+) to the hydroxyl oxygen atoms of both substituents. The agreement between the measured and calculated BDEs is excellent with a MAD of 2.9 ± 1.7 kJ/mol when the SRSC ECP is used to describe Ag(+) and less satisfactory for DZVP-DFT, which underestimates the strength of binding in these systems by ~14% or 26.0 ± 6.7 kJ/mol.
Collapse
Affiliation(s)
- Y Chen
- Department of Chemistry, Wayne State University, Detroit, Michigan 48202, United States
| | | | | |
Collapse
|
43
|
Khodabandeh MH, Reisi H, Davari MD, Zare K, Zahedi M, Ohanessian G. Interaction Modes and Absolute Affinities of α-Amino Acids for Mn2+: A Comprehensive Picture. Chemphyschem 2013; 14:1733-45. [DOI: 10.1002/cphc.201200964] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2012] [Revised: 02/13/2013] [Indexed: 11/07/2022]
|
44
|
Eckhardt S, Brunetto PS, Gagnon J, Priebe M, Giese B, Fromm KM. Nanobio silver: its interactions with peptides and bacteria, and its uses in medicine. Chem Rev 2013; 113:4708-54. [PMID: 23488929 DOI: 10.1021/cr300288v] [Citation(s) in RCA: 509] [Impact Index Per Article: 46.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Sonja Eckhardt
- Department of Chemistry, University of Fribourg, Chemin du Musée 9, 1700 Fribourg, Switzerland.
| | | | | | | | | | | |
Collapse
|
45
|
Shoeib T, Zhao J, Ei Aribi H, Hopkinson AC, Siu KWM. Dissociations of complexes between monovalent metal ions and aromatic amino acid or histidine. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2013; 24:38-48. [PMID: 23238948 DOI: 10.1007/s13361-012-0511-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2012] [Revised: 10/02/2012] [Accepted: 10/02/2012] [Indexed: 06/01/2023]
Abstract
The fragmentations of [AA + M](+) complexes, where AA = Phe, Tyr, Trp, or His, and M is a monovalent metal (Li, Na, or Ag), have been exhaustively studied through collision-induced dissociation (CID) and through deuterium labeling. Dissociations of the Li- and Ag-containing complexes gave a large number of fragment ions; by contrast, the sodium/amino acid complexes have lower binding energies, and dissociation resulted in much simpler spectra, with loss of the entire ligand dominating. Unambiguous assignments of these fragment ions were made and formation mechanisms are proposed. Of particular interest are fragmentations in which the charge was retained on the organic fragment and the metal was lost, either as a metal hydride (AgH) or hydroxide (LiOH) or as the silver atom (Ag(•)).
Collapse
Affiliation(s)
- Tamer Shoeib
- Department of Chemistry, The American University in Cairo, New Cairo, Egypt
| | | | | | | | | |
Collapse
|
46
|
Moustafa EM, Camp CL, Youssef AS, Amleh A, Reid HJ, Sharp BL, Shoeib T. Oxaliplatin complexes with carnosine and its derivatives: in vitro cytotoxicity, mass spectrometric and computational studies with a focus on complex fragmentation. Metallomics 2013; 5:1537-46. [DOI: 10.1039/c3mt00180f] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
47
|
Mirolo L, Schmidt T, Eckhardt S, Meuwly M, Fromm KM. pH-Dependent Coordination of AgIIons by Histidine: Experiment, Theory, and a Model for SilE. Chemistry 2012; 19:1754-61. [DOI: 10.1002/chem.201201844] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2012] [Revised: 10/29/2012] [Indexed: 12/28/2022]
|
48
|
Armentrout PB, Citir M, Chen Y, Rodgers MT. Thermochemistry of Alkali Metal Cation Interactions with Histidine: Influence of the Side Chain. J Phys Chem A 2012; 116:11823-32. [DOI: 10.1021/jp310179c] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- P. B. Armentrout
- Department of Chemistry, University of Utah, 315 South 1400 East,
Room 2020, Salt Lake City, Utah 84112, United States
| | - Murat Citir
- Department of Chemistry, University of Utah, 315 South 1400 East,
Room 2020, Salt Lake City, Utah 84112, United States
| | - Yu Chen
- Department of Chemistry, Wayne State University, Detroit, Michigan
48202, United States
| | - M. T. Rodgers
- Department of Chemistry, Wayne State University, Detroit, Michigan
48202, United States
| |
Collapse
|
49
|
Gu YP, Cui R, Zhang ZL, Xie ZX, Pang DW. Ultrasmall Near-Infrared Ag2Se Quantum Dots with Tunable Fluorescence for in Vivo Imaging. J Am Chem Soc 2011; 134:79-82. [DOI: 10.1021/ja2089553] [Citation(s) in RCA: 279] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yi-Ping Gu
- Key Laboratory
of Analytical Chemistry for Biology and Medicine (Ministry of Education),
College of Chemistry and Molecular Sciences, Research Center for Nanobiology
and Nanomedicine (MOE 985 Innovative Platform), State Key Laboratory
of Virology, and Wuhan Institute of Biotechnology, Wuhan University, Wuhan, 430072, P. R. China
| | - Ran Cui
- Key Laboratory
of Analytical Chemistry for Biology and Medicine (Ministry of Education),
College of Chemistry and Molecular Sciences, Research Center for Nanobiology
and Nanomedicine (MOE 985 Innovative Platform), State Key Laboratory
of Virology, and Wuhan Institute of Biotechnology, Wuhan University, Wuhan, 430072, P. R. China
| | - Zhi-Ling Zhang
- Key Laboratory
of Analytical Chemistry for Biology and Medicine (Ministry of Education),
College of Chemistry and Molecular Sciences, Research Center for Nanobiology
and Nanomedicine (MOE 985 Innovative Platform), State Key Laboratory
of Virology, and Wuhan Institute of Biotechnology, Wuhan University, Wuhan, 430072, P. R. China
| | - Zhi-Xiong Xie
- College of Life Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Dai-Wen Pang
- Key Laboratory
of Analytical Chemistry for Biology and Medicine (Ministry of Education),
College of Chemistry and Molecular Sciences, Research Center for Nanobiology
and Nanomedicine (MOE 985 Innovative Platform), State Key Laboratory
of Virology, and Wuhan Institute of Biotechnology, Wuhan University, Wuhan, 430072, P. R. China
| |
Collapse
|
50
|
Saengmee-anupharb S, Thaweboon S, Amornsakchai T, Thaweboon B, Dechkunakorn S, Suddhasthira T, Srikhirin T. The preparation and antimicrobial effect of AgZrP/nylon 6,10 fibers used as dental hygiene materials. J Appl Polym Sci 2011. [DOI: 10.1002/app.34603] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|