Exopolymeric substances (EPS) from Salmonella enterica: polymers, proteins and their interactions with plants and abiotic surfaces

Maruzani, Rugare; Sutton, Gabriel; P, Nocerino; Marvasi, Massimiliano

doi:10.1007/s12275-019-8353-y

Cited by 30 publications

(21 citation statements)

References 65 publications

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“…where also Gram-negative strains significantly increase their negative charge due to the formation of extracellular polymeric substances including DNA a polysaccharide. 29 Constrained diffusion of oxygen in the volume of 2/ITO glass when compared to 1/ITO glass evidently did not affect the production of cytotoxic O 2 ( 1  g ) near the surface with adsorbed bacteria. Therefore, both layers even the one with limited oxygen permeability exhibited similar phototoxicity towards E. coli and S. aureus strains.…”

Section: Inhibition Of Biofilm Formationmentioning

confidence: 89%

Electrophoretically Deposited Layers of Octahedral Molybdenum Cluster Complexes: A Promising Coating for Mitigation of Pathogenic Bacterial Biofilms under Blue Light

Kirakci

Nguyen

Grasset

et al. 2020

ACS Appl. Mater. Interfaces

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The fight against infective microorganisms is becoming a worldwide priority due to serious concerns about the rising numbers of drug-resistant pathogenic bacteria. In this context, the inactivation of pathogens by singlet oxygen, O 2 ( 1 Δ g ), produced by photosensitizers upon light irradiation has become an attractive strategy to combat drug-resistant microbes. To achieve this goal, we electrophoretically deposited O 2 ( 1 Δ g )-photosensitizing octahedral molybdenum cluster complexes on indium-tin oxide coated glass plates. This procedure led to the first example of molecular photosensitizer layers able to photoinactivate bacterial biofilms. We delineated the morphology, composition, luminescence, and singlet oxygen formation of these layers and correlated these features with their antibacterial activity. Clearly, continuous 460 nm light irradiation imparted the layers with strong antibacterial properties, and the activity of these layers inhibited the biofilm formation and eradicated mature biofilms of Gram-positive Staphylococcus aureus and Enterococcus faecalis, as well as, Gram-negative Pseudomonas aeruginosa and Escherichia coli bacterial strains. Overall, the microstructure-related oxygen diffusivity of the layers and the water stability of the complexes were the most critical parameters for the efficient and durable use. These photoactive layers are attractive for the design of antibacterial surfaces

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Section: Inhibition Of Biofilm Formationmentioning

confidence: 89%

Electrophoretically Deposited Layers of Octahedral Molybdenum Cluster Complexes: A Promising Coating for Mitigation of Pathogenic Bacterial Biofilms under Blue Light

Kirakci

Nguyen

Grasset

et al. 2020

ACS Appl. Mater. Interfaces

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“…Biofilm formation in these serovars is highly conserved-especially in the serovars that are able to colonize multiple hosts-suggesting that the ability to form a biofilm serves as an evolutionarily advantage during the cycle of infection and transmission (Römling et al, 2003;MacKenzie et al, 2017;MacKenzie et al, 2019). As with other biofilm-forming bacteria, biofilm-associated Salmonella are encased within a matrix of EPSs consisting of proteins, carbohydrates, and extracellular DNA (eDNA) (Maruzani et al, 2019). The exact composition of the Salmonella biofilm EPSs may vary depending on both serovar and environmental conditions, but primarily consists of a network of proteinaceous curli fimbriae fibers, cellulose, and eDNA (Zogaj et al, 2001;Römling, 2005;Wang et al, 2014).…”

Section: Salmonella Chronic Infectionsmentioning

confidence: 99%

Salmonella Biofilm Formation, Chronic Infection, and Immunity Within the Intestine and Hepatobiliary Tract

Harrell

Hahn

D’Souza

et al. 2021

Front. Cell. Infect. Microbiol.

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Within the species of Salmonella enterica, there is significant diversity represented among the numerous subspecies and serovars. Collectively, these account for microbes with variable host ranges, from common plant and animal colonizers to extremely pathogenic and human-specific serovars. Despite these differences, many Salmonella species find commonality in the ability to form biofilms and the ability to cause acute, latent, or chronic disease. The exact outcome of infection depends on many factors such as the growth state of Salmonella, the environmental conditions encountered at the time of infection, as well as the infected host and immune response elicited. Here, we review the numerous biofilm lifestyles of Salmonella (on biotic and abiotic surfaces) and how the production of extracellular polymeric substances not only enhances long-term persistence outside the host but also is an essential function in chronic human infections. Furthermore, careful consideration is made for the events during initial infection that allow for gut transcytosis which, in conjunction with host immune functions, often determine the progression of disease. Both typhoidal and non-typhoidal salmonellae can cause chronic and/or secondary infections, thus the adaptive immune responses to both types of bacteria are discussed with particular attention to the differences between Salmonella Typhi, Salmonella Typhimurium, and invasive non-typhoidal Salmonella that can result in differential immune responses. Finally, while strides have been made in our understanding of immunity to Salmonella in the lymphoid organs, fewer definitive studies exist for intestinal and hepatobiliary immunity. By examining our current knowledge and what remains to be determined, we provide insight into new directions in the field of Salmonella immunity, particularly as it relates to chronic infection.

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“…Linoleic acid has been demonstrated to play a role in the regulation of yihT gene which is involved in the synthesis of the O-antigen capsule in Salmonella. It is therefore reasonable to assume that capsule may be involved in attachment/persistence also outside the human host (Maruzani et al, 2019). Interestingly, deletion of yihT in S. enterica sv.…”

Section: Fatty Acidsmentioning

confidence: 99%

Frontiers in Plant Breeding: Perspectives for the Selection of Vegetables Less Susceptible to Enteric Pathogens

et al. 2020

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Exopolymeric substances (EPS) from Salmonella enterica: polymers, proteins and their interactions with plants and abiotic surfaces

Cited by 30 publications

References 65 publications

Electrophoretically Deposited Layers of Octahedral Molybdenum Cluster Complexes: A Promising Coating for Mitigation of Pathogenic Bacterial Biofilms under Blue Light

Electrophoretically Deposited Layers of Octahedral Molybdenum Cluster Complexes: A Promising Coating for Mitigation of Pathogenic Bacterial Biofilms under Blue Light

Salmonella Biofilm Formation, Chronic Infection, and Immunity Within the Intestine and Hepatobiliary Tract

Frontiers in Plant Breeding: Perspectives for the Selection of Vegetables Less Susceptible to Enteric Pathogens

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