colloidal silver nanoparticles (agnps)  (NanoSurface Biomedical)

Journal: Antibiotics

Article Title: Nanosilver: An Old Antibacterial Agent with Great Promise in the Fight against Antibiotic Resistance

doi: 10.3390/antibiotics12081264

Figure Lengend Snippet: A schematic showing the formation of silver nanoparticles (AgNPs) through “top-down” versus “bottom-up” methods. A few illustrative approaches [ , , , , , , , , , , , , , , , , ] are listed for each category.

Article Snippet: The antimicrobial activity of nanosilver such as colloidal silver nanoparticles (AgNPs) is linked to its unique, size-related physicochemical properties such as the very large surface-to-volume ratios and the potential release of Ag + ions from the nanosurface under favorable redox conditions.

Techniques:

Journal: Antibiotics

Article Title: Nanosilver: An Old Antibacterial Agent with Great Promise in the Fight against Antibiotic Resistance

doi: 10.3390/antibiotics12081264

Figure Lengend Snippet: Overview of the chemical, physical, and biological processes for the manufacture of AgNPs: fabrication components, advantages, and disadvantages. The PubMed search words and the associated number (n) of related publications are provided for each type of process.

Article Snippet: The antimicrobial activity of nanosilver such as colloidal silver nanoparticles (AgNPs) is linked to its unique, size-related physicochemical properties such as the very large surface-to-volume ratios and the potential release of Ag + ions from the nanosurface under favorable redox conditions.

Techniques: Solvent, Bacteria, Purification

Journal: Antibiotics

Article Title: Nanosilver: An Old Antibacterial Agent with Great Promise in the Fight against Antibiotic Resistance

doi: 10.3390/antibiotics12081264

Figure Lengend Snippet: Schematics of the chemical synthesis process of colloidal, citrate-capped silver nanoparticles through the reduction of Ag + ions from AgNO 3 with trisodium citrate [ , , ]. Some objects might be out of scale for illustrative purposes.

Article Snippet: The antimicrobial activity of nanosilver such as colloidal silver nanoparticles (AgNPs) is linked to its unique, size-related physicochemical properties such as the very large surface-to-volume ratios and the potential release of Ag + ions from the nanosurface under favorable redox conditions.

Techniques:

Journal: Antibiotics

Article Title: Nanosilver: An Old Antibacterial Agent with Great Promise in the Fight against Antibiotic Resistance

doi: 10.3390/antibiotics12081264

Figure Lengend Snippet: Physicochemical (PCC) properties of AgNPs and methods of characterization recommended by the U.S. Environemntal Protection Agency (EPA) [ 97 , 116 , 133 , 134 , 135 , 136 , 137 ].

Article Snippet: The antimicrobial activity of nanosilver such as colloidal silver nanoparticles (AgNPs) is linked to its unique, size-related physicochemical properties such as the very large surface-to-volume ratios and the potential release of Ag + ions from the nanosurface under favorable redox conditions.

Techniques: Spectrophotometry, X-ray Diffraction, Electron Microscopy, Transmission Assay, Microscopy, Raman Spectroscopy, Atomic Absorption Spectroscopy, Clinical Proteomics, Spectroscopy, Fourier Transform Infrared Spectroscopy, Nuclear Magnetic Resonance, Solubility, Zeta Potential Analyzer, Hydrophobic Interaction Chromatography

Journal: Antibiotics

Article Title: Nanosilver: An Old Antibacterial Agent with Great Promise in the Fight against Antibiotic Resistance

doi: 10.3390/antibiotics12081264

Figure Lengend Snippet: Potential direct and indirect (via ligands) binding of functional agents to the nanosurface for enhancing the antibacterial activity, the specificity of delivery, and the imaging capabilities of silver nanoparticles (AgNPs) [ , , , , , , ].

Article Snippet: The antimicrobial activity of nanosilver such as colloidal silver nanoparticles (AgNPs) is linked to its unique, size-related physicochemical properties such as the very large surface-to-volume ratios and the potential release of Ag + ions from the nanosurface under favorable redox conditions.

Techniques: Binding Assay, Functional Assay, Activity Assay, Imaging

Journal: Antibiotics

Article Title: Nanosilver: An Old Antibacterial Agent with Great Promise in the Fight against Antibiotic Resistance

doi: 10.3390/antibiotics12081264

Figure Lengend Snippet: Antibacterial mechanisms of AgNPs at the membrane and the intracellular level. Some objects might be out of scale for illustrative purposes .

Article Snippet: The antimicrobial activity of nanosilver such as colloidal silver nanoparticles (AgNPs) is linked to its unique, size-related physicochemical properties such as the very large surface-to-volume ratios and the potential release of Ag + ions from the nanosurface under favorable redox conditions.

Techniques: Membrane

Journal: Antibiotics

Article Title: Nanosilver: An Old Antibacterial Agent with Great Promise in the Fight against Antibiotic Resistance

doi: 10.3390/antibiotics12081264

Figure Lengend Snippet: Schematic of the multifaceted antibacterial mechanisms of action of AgNP–antibiotic complexes: ( a ) AgNPs destabilize the cell wall permitting antibiotic entry through production of ROS, ( b ) antibiotics attached to AgNPs are camouflaged from the action of antibiotic-destroying enzymes, and ( c ) efflux pumps are downregulated or blocked by AgNPs. Some objects might be out of scale for illustrative purposes.

Article Snippet: The antimicrobial activity of nanosilver such as colloidal silver nanoparticles (AgNPs) is linked to its unique, size-related physicochemical properties such as the very large surface-to-volume ratios and the potential release of Ag + ions from the nanosurface under favorable redox conditions.

Techniques:

Journal: Antibiotics

Article Title: Nanosilver: An Old Antibacterial Agent with Great Promise in the Fight against Antibiotic Resistance

doi: 10.3390/antibiotics12081264

Figure Lengend Snippet: Damage mechanisms of AgNPs in eukaryotic cells. The teal text represents damage exclusive to eukaryotes, while the black text refers to damage characteristic to both bacteria (prokaryotes) and eukaryotes. Imagery and figure conceptualization were derived from [ , , ]. Some objects might be out of scale for illustrative purposes.

Article Snippet: The antimicrobial activity of nanosilver such as colloidal silver nanoparticles (AgNPs) is linked to its unique, size-related physicochemical properties such as the very large surface-to-volume ratios and the potential release of Ag + ions from the nanosurface under favorable redox conditions.

Techniques: Bacteria, Derivative Assay

Journal: Small (Weinheim an der Bergstrasse, Germany)

Article Title: Voltage-Gated Nanoparticle Transport and Collisions in Attoliter-Volume Nanopore Electrode Arrays

doi: 10.1002/smll.201703248

Figure Lengend Snippet: Amperometric traces recorded at the bottom electrode obtained at EBE values from +0.0 V to +0.6 V vs. Pt QRE with ETE floating. All experiments were performed in Tris buffer (50 mM, pH 7.4) containing 80 pM AgNPs with average diameter ~ 50 nm.

Article Snippet: Colloidal silver nanoparticle (AgNPs) solutions supplied in 2 mM citrate buffer (pH 7.4) were obtained from Ted Pella, Inc.

Techniques:

Journal: Small (Weinheim an der Bergstrasse, Germany)

Article Title: Voltage-Gated Nanoparticle Transport and Collisions in Attoliter-Volume Nanopore Electrode Arrays

doi: 10.1002/smll.201703248

Figure Lengend Snippet: Histograms of peak current, pulse duration, and total charge of oxidative peaks derived from the amperometric traces in Figure 2 at EBE = (A) +0.2, (B) +0.3 V, (C) +0.4 V, (D) +0.5 V and (E) +0.6 V vs. Pt QRE. Solid lines are fits to one- or two-component Gaussian distributions. All experiments were performed in Tris buffer (50 mM, pH 7.4) containing 80 pM AgNPs with average diameter ~ 50 nm.

Article Snippet: Colloidal silver nanoparticle (AgNPs) solutions supplied in 2 mM citrate buffer (pH 7.4) were obtained from Ted Pella, Inc.

Techniques: Derivative Assay

Journal: Small (Weinheim an der Bergstrasse, Germany)

Article Title: Voltage-Gated Nanoparticle Transport and Collisions in Attoliter-Volume Nanopore Electrode Arrays

doi: 10.1002/smll.201703248

Figure Lengend Snippet: (A) Representative amperometric traces from the bottom electrode obtained by applying different voltages, ranging from +0.1 V to +0.7 V vs. Pt QRE to the top electrode and at the same time fixing the bottom electrode of NEAs at +0.3 V. (B, C) Simulated electric field and particle trajectories of AgNPs in the nanopores under steady-state conditions. The finite element simulations were conducted by applying constant potential, ETE = 0.0 V (gate closed, (B)) or +0.7 V (gate open, (C)), while EBE was fixed at +0.3 V. All experiments were performed in Tris buffer (50 mM, pH 7.4) containing 80 pM AgNPs with average diameter ~ 80 nm.

Article Snippet: Colloidal silver nanoparticle (AgNPs) solutions supplied in 2 mM citrate buffer (pH 7.4) were obtained from Ted Pella, Inc.

Techniques:

Journal: Small (Weinheim an der Bergstrasse, Germany)

Article Title: Voltage-Gated Nanoparticle Transport and Collisions in Attoliter-Volume Nanopore Electrode Arrays

doi: 10.1002/smll.201703248

Figure Lengend Snippet: Amperometric traces obtained at the bottom electrode by applying different voltages, ranging from +0.1 V to +0.7 V vs. Pt QRE to the top electrode and at the same time fixing the bottom electrode potential at: (A) 0.0 V, (B) +0.1 V, (C) +0.2 V, (D) +0.3 V and (E) +0.4 V. All experiments were performed in Tris buffer (50 mM, pH 7.4) containing 80 pM AgNPs with average diameter ~ 80 nm.

Article Snippet: Colloidal silver nanoparticle (AgNPs) solutions supplied in 2 mM citrate buffer (pH 7.4) were obtained from Ted Pella, Inc.

Techniques:

Journal: Small (Weinheim an der Bergstrasse, Germany)

Article Title: Voltage-Gated Nanoparticle Transport and Collisions in Attoliter-Volume Nanopore Electrode Arrays

doi: 10.1002/smll.201703248

Figure Lengend Snippet: Amperometric traces obtained at the bottom electrode by applying different voltages, ranging from +0.1 V to +0.7 V vs. Pt QRE to the top electrode and at the same time fixing the bottom electrode of NEAs at +0.2 V. Experiments performed with solutions containing 80 pM AgNPs with average diameters of (A) 80 nm, (B) 50 nm and (C) 30 nm, respectively. All experiments were performed in Tris buffer (50 mM, pH 7.4).

Article Snippet: Colloidal silver nanoparticle (AgNPs) solutions supplied in 2 mM citrate buffer (pH 7.4) were obtained from Ted Pella, Inc.

Techniques:

Journal: PLoS ONE

Article Title: Gold- and Silver Nanoparticles Affect the Growth Characteristics of Human Embryonic Neural Precursor Cells

doi: 10.1371/journal.pone.0058211

Figure Lengend Snippet: Exposure to the NPs resulted in longer, more perforated, and partly thicker GFAP+ processes, while nanoparticle-size or particles/cell did not have any effect the GFAP-expression. Au 20∶800, gold 20 nm and 800 particles/cell; Au 80∶800, gold 80 nm and 800 particles/cell; Ag 20∶800, silver 20 nm and 800 particles/cell; Ag 80∶800, silver 80 nm and 800 particles/cell; AgNO 3 1.0, silver nitrate 1.0 mg/ml. Scale bars equal 107 µm.

Article Snippet: Prefabricated colloidal gold and silver nanoparticles (AuNPs and AgNPs) of 20 and 80 nm in diameter, respectively, dissolved in water were purchased from BBInternational (Cardiff, UK).

Techniques: Expressing