Mechanically-driven spreading of bacterial populations

© 2015 Elsevier B.V. The effect of mechanical interactions between cells in the spreading of bacterial populations was investigated in one-dimensional space. A continuum-mechanics approach, comprising cell migration, proliferation, and exclusion processes, was employed to elucidate the dynamics. The...

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Main Authors: Waipot Ngamsaad, Suthep Suantai
Format: Journal
Published: 2018
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http://cmuir.cmu.ac.th/jspui/handle/6653943832/55950
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Institution: Chiang Mai University
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spelling th-cmuir.6653943832-559502018-09-05T03:06:26Z Mechanically-driven spreading of bacterial populations Waipot Ngamsaad Suthep Suantai Mathematics © 2015 Elsevier B.V. The effect of mechanical interactions between cells in the spreading of bacterial populations was investigated in one-dimensional space. A continuum-mechanics approach, comprising cell migration, proliferation, and exclusion processes, was employed to elucidate the dynamics. The consequent nonlinear reaction-diffusion-like equation describes the constitution dynamics of a bacterial population. In this model, bacterial cells were treated as rod-like particles that interact with each other through hard-core repulsion, which introduces the exclusion effect that causes bacterial populations to migrate quickly at high density. The propagation of bacterial density as a traveling wave front over extended times was also analyzed. The analytical and numerical solutions revealed that the front speed was enhanced by the exclusion process, which depended upon the cell-packing fraction. Finally, we qualitatively compared our theoretical results with experimental evidence. 2018-09-05T03:06:26Z 2018-09-05T03:06:26Z 2016-06-01 Journal 10075704 2-s2.0-84951848821 10.1016/j.cnsns.2015.10.026 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84951848821&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/55950
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
topic Mathematics
spellingShingle Mathematics
Waipot Ngamsaad
Suthep Suantai
Mechanically-driven spreading of bacterial populations
description © 2015 Elsevier B.V. The effect of mechanical interactions between cells in the spreading of bacterial populations was investigated in one-dimensional space. A continuum-mechanics approach, comprising cell migration, proliferation, and exclusion processes, was employed to elucidate the dynamics. The consequent nonlinear reaction-diffusion-like equation describes the constitution dynamics of a bacterial population. In this model, bacterial cells were treated as rod-like particles that interact with each other through hard-core repulsion, which introduces the exclusion effect that causes bacterial populations to migrate quickly at high density. The propagation of bacterial density as a traveling wave front over extended times was also analyzed. The analytical and numerical solutions revealed that the front speed was enhanced by the exclusion process, which depended upon the cell-packing fraction. Finally, we qualitatively compared our theoretical results with experimental evidence.
format Journal
author Waipot Ngamsaad
Suthep Suantai
author_facet Waipot Ngamsaad
Suthep Suantai
author_sort Waipot Ngamsaad
title Mechanically-driven spreading of bacterial populations
title_short Mechanically-driven spreading of bacterial populations
title_full Mechanically-driven spreading of bacterial populations
title_fullStr Mechanically-driven spreading of bacterial populations
title_full_unstemmed Mechanically-driven spreading of bacterial populations
title_sort mechanically-driven spreading of bacterial populations
publishDate 2018
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84951848821&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/55950
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