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William J. Brownlow

Researcher at Old Dominion University

Publications -  7
Citations -  613

William J. Brownlow is an academic researcher from Old Dominion University. The author has contributed to research in topics: Ethidium bromide & Membrane permeability. The author has an hindex of 6, co-authored 7 publications receiving 584 citations.

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Real-Time Probing of Membrane Transport in Living Microbial Cells Using Single Nanoparticle Optics and Living Cell Imaging†

TL;DR: Assessment of real-time change of membrane permeability and pore sizes of P. aeruginosa using the intrinsic color index (surface plasmon resonance spectra) of silver (Ag) nanoparticles as the nanometer size index probes shows that Ag nanoparticles with sizes ranging up to 80 nm are accumulated in living microbial cells, demonstrating that these Ag nanoparticle transport through the inner and outer membrane of the cells.
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Using Nanoparticle Optics Assay for Direct Observation of the Function of Antimicrobial Agents in Single Live Bacterial Cells

TL;DR: It is demonstrated that the number of Ag nanoparticles accumulated in cells increases as the aztreonam (AZT) concentration increases and as incubation time increases, showing that AZT induces the sized transformation of membrane permeability and the disruption of the cell wall.
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Size and Temperature Dependence of Surface Plasmon Absorption of Gold Nanoparticles Induced by Tris(2,2‘-bipyridine)ruthenium(II)

TL;DR: In this paper, the surface plasmon absorption of Au nanoparticles (6.5, 19, 48, 97 nm) was investigated in the presence of Ru(bpy)32+ at 24.0, 33.0 and 51.0 °C.
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Direct observation of substrate induction of resistance mechanism in Pseudomonas aeruginosa using single live cell imaging

TL;DR: Time courses of fluorescence intensity of these three strains in ethidium bromide (EtBr) showed that accumulation kinetics and extrusion machinery were highly dependent upon pump substrate concentration and an inductive mechanism in the development of substrate resistance in P. aeruginosa was suggested.
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Single live cell imaging for real-time monitoring of resistance mechanism in Pseudomonas aeruginosa

TL;DR: This research constitutes the first direct imaging of resistance mechanism of live bacterial cells at single cell resolution and opens up the new possibility of advancing the understanding of bacteria resistance mechanism.