Results 31 to 40 of about 101,100 (329)
Acinetobacter quorum sensing contributes to inflammation-induced inhibition of orthopaedic implant osseointegration [PDF]
European Cells & Materials, 2022 Implant infection impairs osseointegration of orthopaedic implants by inducing inflammation. Acinetobacter spp. are increasingly prevalent multi-drug resistant bacteria that can cause osteomyelitis. Acinetobacter spp.
H Choe +7 more
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Quorum sensing as a mechanism to harness the wisdom of the crowds
Nature Communications, 2023 Bacteria release and sense small molecules called autoinducers in a process known as quorum sensing. The prevailing interpretation of quorum sensing is that by sensing autoinducer concentrations, bacteria estimate population density to regulate the ...
Stefany Moreno-Gámez +2 more
doaj +1 more source
Phenotypic memory in quorum sensing. [PDF]
PLoS Comput Biol, 2023 Quorum sensing (QS) is a regulatory mechanism used by bacteria to coordinate group behavior in response to high cell densities. During QS, cells monitor the concentration of external signals, known as autoinducers, as a proxy for cell density. QS often involves positive feedback loops, leading to the upregulation of genes associated with QS signal ...
Ostovar G, Boedicker JQ.
europepmc +4 more sources
Effect of Autoinducer-2 Quorum Sensing Inhibitor on Interspecies Quorum Sensing
Frontiers in Microbiology, 2022 Bacterial drug resistance caused by overuse and misuse of antibiotics is common, especially in clinical multispecies infections. It is of great significance to discover novel agents to treat clinical bacterial infections. Studies have demonstrated that autoinducer-2 (AI-2), a signal molecule in quorum sensing (QS), plays an important role in ...
Kai Jiang +16 more
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Quorum sensing in African trypanosomes [PDF]
Current Opinion in Microbiology, 2019 Many microbial eukaryotes exhibit cell-cell communication to co-ordinate group behaviours as a strategy to exploit a changed environment, adapt to adverse conditions or regulate developmental responses. Although best characterised in bacteria, eukaryotic microbes have also been revealed to cooperate to optimise their survival or dissemination.
Rojas Martinez, Federico +1 more
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Interfering with Bacterial Quorum Sensing [PDF]
Perspectives in Medicinal Chemistry, 2016 Quorum sensing (QS) describes the exchange of chemical signals in bacterial populations to adjust the bacterial phenotypes according to the density of bacterial cells. This serves to express phenotypes that are advantageous for the group and ensure bacterial survival. To do so, bacterial cells synthesize autoinducer (AI) molecules, release them to the
Reuter, Kerstin +2 more
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Dishonest Signaling in Microbial Conflicts
Frontiers in Microbiology, 2022 Quorum sensing is a cell-cell communication system that bacteria use to express social phenotypes, such as the production of extracellular enzymes or toxins, at high cell densities when these phenotypes are most beneficial.
Ihab Hashem, Jan F. M. Van Impe
doaj +1 more source
Quorum-sensing activity and related virulence factor expression in clinically pathogenic isolates of Pseudomonas aeruginosa [PDF]
, 2008 Respiratory isolates of Pseudomonas aeruginosa were collected from 58 critically-ill patients with ventilator-associated pneumonia. Expression of elastase and pyocyanin was assessed semi-quantitatively, while quorum-sensing activity was assessed by ...
Ader, F. +9 more
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Cheater suppression and stochastic clearance through quorum sensing.
PLoS Computational Biology, 2022 The evolutionary consequences of quorum sensing in regulating bacterial cooperation are not fully understood. In this study, we reveal unexpected effects of regulating public good production through quorum sensing on bacterial population dynamics ...
Alexander S Moffett +3 more
doaj +1 more source
Optimal Census by Quorum Sensing
PLOS Computational Biology, 2015 Quorum sensing is the regulation of gene expression in response to changes in cell density. To measure their cell density, bacterial populations produce and detect diffusible molecules called autoinducers. Individual bacteria internally represent the external concentration of autoinducers via the level of monitor proteins.
Ned S. Wingreen, Thibaud Taillefumier
openaire +6 more sources