Results 31 to 40 of about 111,040 (251)

Lohmann Brown Rooster Semen: Intrinsic Bacteria and Their Impact on Sperm Progressive Motility and Seminal Biochemical Parameters—A Preliminary Study

open access: yesStresses, 2023
Semen quality plays a crucial role in poultry production; however, it may be impaired by the presence of numerous bacterial species. This study researched the impact of bacterial contamination of Lohmann brown rooster semen on the biochemical parameters ...
Michal Ďuračka   +6 more
doaj   +1 more source

An experimental and computational study of the effect of ActA polarity on the speed of Listeria monocytogenes actin-based motility. [PDF]

open access: yesPLoS Computational Biology, 2009
Listeria monocytogenes is a pathogenic bacterium that moves within infected cells and spreads directly between cells by harnessing the cell's dendritic actin machinery. This motility is dependent on expression of a single bacterial surface protein, ActA,
Susanne M Rafelski   +2 more
doaj   +1 more source

Symmetries in bacterial motility [PDF]

open access: yesProceedings of the National Academy of Sciences, 1996
Descriptions are given of three kinds of symmetries encountered in studies of bacterial locomotion, and of the ways in which they are circumvented or broken. A bacterium swims at very low Reynolds number: it cannot propel itself using reciprocal motion (by moving through a sequence of shapes, first forward and then in reverse); cyclic motion is ...
openaire   +2 more sources

Effect of Viscosity on Bacterial Motility [PDF]

open access: yesJournal of Bacteriology, 1974
The behavior of a number of motile flagellated bacteria toward viscosity characteristics of their fluid environments was observed. All showed an increase in velocity (micrometers per second) in more viscous solutions. Velocity reached a maximum at a characteristic value, however, and thereafter decreased with higher viscosities ...
W R, Schneider, R N, Doetsch
openaire   +2 more sources

Analysis of the role of the QseBC two-component sensory system in epinephrine-induced motility and intracellular replication of Burkholderia pseudomallei

open access: yesPLoS ONE, 2023
Burkholderia pseudomallei is a facultative intracellular bacterial pathogen that causes melioidosis, a severe invasive disease of humans. We previously reported that the stress-related catecholamine hormone epinephrine enhances motility of B ...
Chatruthai Meethai   +11 more
doaj   +2 more sources

Quantification of Bacterial Twitching Motility in Dense Colonies Using Transmitted Light Microscopy and Computational Image Analysis

open access: yesBio-Protocol, 2018
A method was developed to allow the quantification and mapping of relative bacterial twitching motility in dense samples, where tracking of individual bacteria was not feasible. In this approach, movies of bacterial films were acquired using differential
Benjamin Smith   +5 more
doaj   +1 more source

Interspecies interactions induce exploratory motility in Pseudomonas aeruginosa

open access: yeseLife, 2019
Microbes often live in multispecies communities where interactions among community members impact both the individual constituents and the surrounding environment. Here, we developed a system to visualize interspecies behaviors at initial encounters.
Dominique H Limoli   +5 more
doaj   +1 more source

Listeria motility increases the efficiency of epithelial invasion during intestinal infection.

open access: yesPLoS Pathogens, 2022
Listeria monocytogenes (Lm) is a food-borne pathogen that causes severe bacterial gastroenteritis, with high rates of hospitalization and mortality.
Inge M N Wortel   +4 more
doaj   +1 more source

Machine learning-based motion tracking reveals an inverse correlation between adhesivity and surface motility of the leptospirosis spirochete

open access: yesNature Communications, 2023
Bacterial motility is often a crucial virulence factor for pathogenic species. A common approach to study bacterial motility is fluorescent labeling, which allows detection of individual bacterial cells in a population or in host tissues.
Keigo Abe   +2 more
doaj   +1 more source

Deciphering Motion Signatures of Escherichia coli under Ampicillin and Polymyxin B Stress: A Multidimensional Approach Using Optical Flow and Angular Profiling [PDF]

open access: yesModern Medicine
This study is a multidimensional research of Escherichia coli genetically paralyzed by ampicillin and polymyxin B using optical flow, Gaussian Mixture Model (GMM) clustering, angular profiling and fluorescence estimating.
Ali Adel DAWOOD   +2 more
doaj   +1 more source

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