Publications by authors named "Ariel Rogers"
Silver (Ag) in different forms has been gaining broad attention due to its antimicrobial activities and the increasing resistance of bacteria to commonly prescribed antibiotics. However, various aspects of the antimicrobial mechanism of Ag have not been understood, including how Ag affects bacterial motility, a factor intimately related to bacterial virulence. Here, we report our study on how Ag ions affect the motility of bacteria using swimming, tethering, and rotation assays.
View Article and Find Full Text PDFBacterial mobility and motility in porous media mimicked by microspheres.
Colloids Surf B Biointerfaces
February 2023
Article Synopsis
- Bacterial motion in porous media is crucial for survival and applications, and the study focused on Escherichia coli in a microsphere-like environment.
- As the density of microspheres increased, bacterial velocity decreased, and directional changes were more frequent due to collisions with the microspheres.
- The research established a link between bacterial trapping and geometric confinement, revealing that while motility remained stable, mobility was significantly impacted by the structure of the porous media.
Article Synopsis
- Bacterial growth curve studies are key in microbiology, and using microplate readers offers improved efficiency and temporal resolution compared to traditional methods.
- A new analysis technique using time derivatives has been developed for better evaluation of bacterial growth with microplate readers.
- The text includes a step-by-step protocol and a homemade program for implementing this new analysis method.
Interactions of E. coli with cylindrical micro-pillars of different geometric modifications.
Colloids Surf B Biointerfaces
January 2022
Understanding the behavior of bacteria at the proximity of different surfaces is of great importance and interest. Despite recent exciting progress in geometric control of bacterial behavior around surfaces, a detailed comparison on the interaction of bacteria with cylindrical surfaces of different geometric modifications is still missing. Here, we investigated how bacteria interacted with cylindrical micro-pillars and modified cylindrical micro-pillars with sprocket, gear, and flower-like wall surface features.
View Article and Find Full Text PDFPhysical agents, such as low electric voltage and current, have recently gained attention for antimicrobial treatment due to their bactericidal capability. Although microampere electric current was shown to suppress the growth of bacteria, it remains unclear to what extent the microampere current damaged the bacterial membrane. Here, we investigated the membrane damage and two-way leakage caused by microampere electric current (≤100 μA) with a short exposure time (30 min).
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