Influence of the rotating magnetic field on bacterial biofilm extracellular matrix composition

2020 ◽  
Author(s):  
Radosław DRozd ◽  
Magdalena Szymańska ◽  
Kuba Hoppe ◽  
Adam Junka ◽  
Karol Fijałkowski
Keyword(s):  
Magnetic Field ◽  
Extracellular Matrix ◽  
Bacterial Biofilm ◽  
Rotating Magnetic Field ◽  
Matrix Composition

scholarly journals Vibrio cholerae biofilm dispersal regulator causes cell release from matrix through type IV pilus retraction

2021 ◽  
Author(s):  
Praveen K. Singh ◽  
Daniel K.H. Rode ◽  
Pauline Buffard ◽  
Kazuki Nosho ◽  
Miriam Bayer ◽  
...  
Keyword(s):  
Extracellular Matrix ◽  
Vibrio Cholerae ◽  
Joint Effect ◽  
Bacterial Biofilm ◽  
Matrix Composition ◽  
Type Iv Pilus ◽  
Type Iv ◽  
The Matrix ◽  
Cell Release ◽  
Biofilm Dispersal

The extracellular matrix is a defining feature of bacterial biofilms and provides structural stability to the community by binding cells to the surface and to each other. Transitions between bacterial biofilm initiation, growth, and dispersion require different regulatory programs, all of which result in modifications to the extracellular matrix composition, abundance, or functionality. However, the mechanisms by which individual cells in biofilms disengage from the matrix to enable their departure during biofilm dispersal are unclear. Here, we investigated active biofilm dispersal of Vibrio cholerae during nutrient starvation, resulting in the discovery of the conserved Vibrio biofilm dispersal regulator VbdR. We show that VbdR triggers biofilm dispersal by controlling cellular release from the biofilm matrix, which is achieved by inducing the retraction of the mannose-sensitive hemagglutinin (MSHA) type IV pili and the expression of a matrix protease IvaP. We further show that MSHA pili have numerous binding partners in the matrix and that the joint effect of MSHA pilus retraction and IvaP activity is necessary and sufficient for causing biofilm dispersal. These results highlight the crucial role of type IV pilus dynamics during biofilm dispersal and provide a new target for controlling V. cholerae biofilm abundance through the induction and manipulation of biofilm dispersal.

THE LINEAR NON-IRON INDUCTOR WITH ROTATING MAGNETIC FIELD

2018 ◽  
Vol 2018 (49) ◽  
pp. 39-50
Author(s):  
О. Karlov ◽  
◽  
I. Kondratenko ◽  
R. Kryshchuk ◽  
A. Rashchepkin ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Rotating Magnetic Field

Effect of rotating magnetic field on the fading effect of Al–5Ti–1B in commercial pure Al

2014 ◽  
Vol 29 (15) ◽  
pp. 1656-1663 ◽  
Author(s):  
Hang Chen ◽  
Jinchuan Jie ◽  
Kateryna Svynarenko ◽  
Hongjun Ma ◽  
Tingju Li
Keyword(s):  
Magnetic Field ◽  
Rotating Magnetic Field ◽  
Fading Effect ◽  
Image Position

Abstract

Melting performance enhancement of phase change material with magnetic particles under rotating magnetic field

2021 ◽  
Vol 38 ◽  
pp. 102540
Author(s):  
Yubin Fan ◽  
Meng Yu ◽  
Chunwei Zhang ◽  
Long Jiang ◽  
Xuejun Zhang ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Phase Change ◽  
Phase Change Material ◽  
Magnetic Particles ◽  
Performance Enhancement ◽  
Rotating Magnetic Field ◽  
Change Material
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