The Social Life of Aeromonas through Biofilm and Quorum Sensing Systems

Talagrand-Reboul, Émilie; Jumas‐Bilak, Estelle; Lamy, Brigitte

doi:10.3389/fmicb.2017.00037

Cited by 89 publications

(79 citation statements)

References 175 publications

(283 reference statements)

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“…The "signal" molecule in Gram-negative bacteria is N-acyl homoserine-lactone (AHL) and in Aeromonas, the AHL is able to modulate the host immune response [19,186,259]. Several studies have shown the importance of AHLs in regulating a range of biological functions such as biofilm formation, antibiotic production, and warming motility and the different QS systems harbor differences in their influences [260][261][262][263][264][265][266]. Chan et al [260] found in the whole genome of the strain A. veronii 159 sequences of QS-related genes, providing a model for exploring it roles in virulence and as a potential target for Aeromonas treatment.…”

Section: Quorum Sensingmentioning

confidence: 99%

“…Chan et al [260] found in the whole genome of the strain A. veronii 159 sequences of QS-related genes, providing a model for exploring it roles in virulence and as a potential target for Aeromonas treatment. Talagrand-Reboul et al [266] focused their review on the knowledge of the biofilm and QS in Aeromonas, explaining that biofilm provides a high cell-density that allows interaction between bacteria with the QS systems in Aeromonas. That study also reported the possible role of this biofilm formation in mixed infections and should be further studied.…”

Section: Quorum Sensingmentioning

confidence: 99%

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An Update on the Genus Aeromonas: Taxonomy, Epidemiology, and Pathogenicity

2020

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The genus Aeromonas belongs to the Aeromonadaceae family and comprises a group of Gram-negative bacteria widely distributed in aquatic environments, with some species able to cause disease in humans, fish, and other aquatic animals. However, bacteria of this genus are isolated from many other habitats, environments, and food products. The taxonomy of this genus is complex when phenotypic identification methods are used because such methods might not correctly identify all the species. On the other hand, molecular methods have proven very reliable, such as using the sequences of concatenated housekeeping genes like gyrB and rpoD or comparing the genomes with the type strains using a genomic index, such as the average nucleotide identity (ANI) or in silico DNA–DNA hybridization (isDDH). So far, 36 species have been described in the genus Aeromonas of which at least 19 are considered emerging pathogens to humans, causing a broad spectrum of infections. Having said that, when classifying 1852 strains that have been reported in various recent clinical cases, 95.4% were identified as only four species: Aeromonas caviae (37.26%), Aeromonas dhakensis (23.49%), Aeromonas veronii (21.54%), and Aeromonas hydrophila (13.07%). Since aeromonads were first associated with human disease, gastroenteritis, bacteremia, and wound infections have dominated. The literature shows that the pathogenic potential of Aeromonas is considered multifactorial and the presence of several virulence factors allows these bacteria to adhere, invade, and destroy the host cells, overcoming the immune host response. Based on current information about the ecology, epidemiology, and pathogenicity of the genus Aeromonas, we should assume that the infections these bacteria produce will remain a great health problem in the future. The ubiquitous distribution of these bacteria and the increasing elderly population, to whom these bacteria are an opportunistic pathogen, will facilitate this problem. In addition, using data from outbreak studies, it has been recognized that in cases of diarrhea, the infective dose of Aeromonas is relatively low. These poorly known bacteria should therefore be considered similarly as enteropathogens like Salmonella and Campylobacter.

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Section: Quorum Sensingmentioning

confidence: 99%

Section: Quorum Sensingmentioning

confidence: 99%

An Update on the Genus Aeromonas: Taxonomy, Epidemiology, and Pathogenicity

2020

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“…; Talagrand‐Reboul et al . ). Aeromonas veronii PR was shown to form biofilm in both static and mobile conditions, with temperature affecting the process contrastively (Fig.…”

Section: Resultsmentioning

confidence: 97%

Pathogenic characteristics ofAeromonas veroniiisolated from the liver of a diseased guppy (Poecilia reticulata)

Lazado

Zilberg

2018

Lett Appl Microbiol

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Aeromonad infections continue to affect the fish farming industry. Several new species of Aeromonads in freshwater ornamental fish have been identified in the last years. In this study, we have characterized an Aeromonas veronii isolate from a diseased guppy. The series of experiments identified the intrinsic and extrinsic factors contributing to the pathogenic characteristics of the isolate. It has been shown to be pathogenic to both guppy and zebrafish. The results offer foundational knowledge in the development of preventive and therapeutic measures to combat this pathogen in the ornamental fish industry.

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“…Moreover, bacterial surface components such as fimbriae and flagella provide CSH (Donlan ) and bacterial motility, which is closely related to the presence of these particular appendages, decisive for the attachment (Talagrand‐Reboul et al . ). In fact, micro‐organisms able to form biofilm usually exhibit one or more of the three main types of motility, depending on the presence of flagella (swimming and swarming) and type IV pili (twitching; Kearns ).…”

Section: Introductionmentioning

confidence: 97%