A simple label-free method reveals bacterial growth dynamics and antibiotic action in real-time.

ABSTRACT: Understanding the response of bacteria to environmental stress is hampered by the relative insensitivity of methods to detect growth. This means studies of antibiotic resistance and other physiological methods often take 24 h or longer. We developed and tested a scattered light and detection system (SLIC) to address this challenge, establishing the limit of detection, and time to positive detection of the growth of small inocula. We compared the light-scattering of bacteria grown in varying high and low nutrient liquid medium and the growth dynamics of two closely related organisms. Scattering data was modelled using Gompertz and Broken Stick equations. Bacteria were also exposed meropenem, gentamicin and cefoxitin at a range of concentrations and light scattering of the liquid culture was

SUBMITTER: Hammond RJH 

PROVIDER: S-EPMC9653415 | biostudies-literature | 2022 Nov

REPOSITORIES: biostudies-literature