Corrigendum to "Assessment of the relationship between the MLST genetic diversity of Listeria monocytogenes and growth under selective and non-selective conditions" [Food Microbiol. 114 (2023) 104303]
Food Microbiol. 2024 May;119:104444. doi: 10.1016/j.fm.2023.104444. Epub 2023 Dec 9.NO ABSTRACTPMID:38225044 | DOI:10.1016/j.fm.2023.104444 (Source: Food Microbiology)
Source: Food Microbiology - January 15, 2024 Category: Food Science Authors: Carolina Rosa Rodrigues de Souza H élène Bergis Patricia Ng Laurent Guillier Benjamin F élix Alexandre Leclercq Nathalie Gnanou Besse Source Type: research
Two-component system LiaSR negatively regulated the acid resistance and pathogenicity of Listeria monocytogenes 10403S
This study provides novel knowledge on the regulation of GAD system and the control of this foodborne pathogen.PMID:38225058 | DOI:10.1016/j.fm.2023.104428 (Source: Food Microbiology)
Source: Food Microbiology - January 15, 2024 Category: Food Science Authors: Xiaowei Fang Yuying Yang Qian Guo Yu Zhang Mei Yuan Xiongyan Liang Jing Liu Shouguo Fang Chun Fang Source Type: research
Lactic Acid Bacteria isolated from traditional and innovative alheiras as potential biocontrol agents
Food Microbiol. 2024 May;119:104450. doi: 10.1016/j.fm.2023.104450. Epub 2023 Dec 13.ABSTRACTFrom a selection of seven traditional and 14 innovative alheiras, 491 lactic acid bacteria (LAB) were isolated and tested for their antimicrobial activity against several food-borne pathogens. Among these, six strains revealed antimicrobial activity through potential bacteriocin production against 14 Listeria monocytogenes strains, Enterococcus faecalis ATCC 29212, Clostridium sporogenes ESB050, and Clostridium perfringens ESB054. Through whole genome sequencing (WGS), these strains were identified as Lactiplantibacillus plantarum ...
Source: Food Microbiology - January 15, 2024 Category: Food Science Authors: In ês Azevedo Joana Barbosa Helena Albano Teresa Nogueira Paula Teixeira Source Type: research
Listeria monocytogenes prevalence and genomic diversity along the pig and pork production chain
Food Microbiol. 2024 May;119:104430. doi: 10.1016/j.fm.2023.104430. Epub 2023 Nov 25.ABSTRACTThe facultative intracellular bacterium Listeria monocytogenes (L. monocytogenes) is the causative agent of listeriosis, a severe invasive illness. This ubiquitous species is widely distributed in the environment, but infection occurs almost exclusively through ingestion of contaminated food. The pork production sector has been heavily affected by a series of L. monocytogenes-related foodborne outbreaks in the past around the world. Ready-to-eat (RTE) pork products represent one of the main food sources for strong-evidence listerio...
Source: Food Microbiology - January 15, 2024 Category: Food Science Authors: Jean Lagarde Carole Feurer Martine Denis Pierre-Emmanuel Douarre Pascal Piveteau Sophie Roussel Source Type: research
Corrigendum to "Assessment of the relationship between the MLST genetic diversity of Listeria monocytogenes and growth under selective and non-selective conditions" [Food Microbiol. 114 (2023) 104303]
Food Microbiol. 2024 May;119:104444. doi: 10.1016/j.fm.2023.104444. Epub 2023 Dec 9.NO ABSTRACTPMID:38225044 | DOI:10.1016/j.fm.2023.104444 (Source: Food Microbiology)
Source: Food Microbiology - January 15, 2024 Category: Food Science Authors: Carolina Rosa Rodrigues de Souza H élène Bergis Patricia Ng Laurent Guillier Benjamin F élix Alexandre Leclercq Nathalie Gnanou Besse Source Type: research
Lactic Acid Bacteria isolated from traditional and innovative alheiras as potential biocontrol agents
Food Microbiol. 2024 May;119:104450. doi: 10.1016/j.fm.2023.104450. Epub 2023 Dec 13.ABSTRACTFrom a selection of seven traditional and 14 innovative alheiras, 491 lactic acid bacteria (LAB) were isolated and tested for their antimicrobial activity against several food-borne pathogens. Among these, six strains revealed antimicrobial activity through potential bacteriocin production against 14 Listeria monocytogenes strains, Enterococcus faecalis ATCC 29212, Clostridium sporogenes ESB050, and Clostridium perfringens ESB054. Through whole genome sequencing (WGS), these strains were identified as Lactiplantibacillus plantarum ...
Source: Food Microbiology - January 15, 2024 Category: Food Science Authors: In ês Azevedo Joana Barbosa Helena Albano Teresa Nogueira Paula Teixeira Source Type: research
Two-component system LiaSR negatively regulated the acid resistance and pathogenicity of Listeria monocytogenes 10403S
This study provides novel knowledge on the regulation of GAD system and the control of this foodborne pathogen.PMID:38225058 | DOI:10.1016/j.fm.2023.104428 (Source: Food Microbiology)
Source: Food Microbiology - January 15, 2024 Category: Food Science Authors: Xiaowei Fang Yuying Yang Qian Guo Yu Zhang Mei Yuan Xiongyan Liang Jing Liu Shouguo Fang Chun Fang Source Type: research
Antibacterial effect of ultrasound and β-citronellol against Listeria monocytogenes and its application in carrot preservation
This study investigated the antibacterial effects of ultrasound (US), β-citronellol (CT), and a combination of the two treatments on Listeria monocytogenes. Results showed that US or CT alone did not show apparent antibacterial effect (0.02-0.76 log CFU/mL reduction). The combined treatment showed obviously inactivate effect of L. monocytogenes, the populations of L. monocytogenes decreased by 8.93 log CFU/mL after US (253 W/cm2, 20 kHz) + 0.8 mg/mL CT treatment. US + CT treatment also had a significant (P < 0.05) antibacterial effect on isolates of L. monocytogenes from three different serotypes. In this study, the da...
Source: Ultrasonics Sonochemistry - January 11, 2024 Category: Chemistry Authors: Yimeng Li Runyang Sun Yajing Kong Xiaolin Cai Tongyu Jiang Shuai Cheng Hui Yang Luyi Song Xin L ü Xin Wang Chao Shi Source Type: research
Eliminating the invading extracellular and intracellular FnBp+ bacteria from respiratory epithelial cells by autophagy mediated through FnBp-Fn-Integrin α5β1 axis
ConclusionsVarious FnBp from FnBp+ bacteria have the ability to initiate autophagy via FnBp-Fn-Integrin α5β1 axis to promote the removal of invading bacteria from epithelial cells in the presence of fewer invaders. S100A8 is a key molecule downstream of Integrin α5β1 in this autophagy pathway. (Source: Frontiers in cellular and infection microbiology)
Source: Frontiers in cellular and infection microbiology - January 9, 2024 Category: Microbiology Source Type: research
Optimized recombinant production of the bacteriocin garvicin Q by Corynebacterium glutamicum
Bacteriocins are antimicrobial peptides applied in food preservation and are interesting candidates as alternatives to conventional antibiotics or as microbiome modulators. Recently, we established Corynebacterium glutamicum as a suitable production host for various bacteriocins including garvicin Q (GarQ). Here, we establish secretion of GarQ by C. glutamicum via the Sec translocon achieving GarQ titers of about 7 mg L–1 in initial fermentations. At neutral pH, the cationic peptide is efficiently adsorbed to the negatively charged envelope of producer bacteria limiting availability of the bacteriocin in culture supernat...
Source: Frontiers in Microbiology - January 8, 2024 Category: Microbiology Source Type: research
Surveillance of pathogenic bacteria on a food matrix using machine-learning-enabled paper chromogenic arrays
This study reports significant improvements to a paper chromogenic array sensor - machine learning (PCA-ML) methodology sensing concentrations of volatile organic compounds (VOCs) emitted on a species-specific basis by pathogens by streamlining dye selection, sensor fabrication, database construction, and machine learning and validation. This approach enables noncontact, time-dependent, simultaneous monitoring of multiple pathogens (Listeria monocytogenes, Salmonella, and E. coli O157:H7) at levels as low as 1 log CFU/g with over 90% accuracy. The report provides theoretical and practical frameworks demonstrating that chro...
Source: Biosensors and Bioelectronics - January 6, 2024 Category: Biotechnology Authors: Zhen Jia Yaguang Luo Dayang Wang Emma Holliday Arnav Sharma Madison M Green Michelle R Roche Katherine Thompson-Witrick Genevieve Flock Arne J Pearlstein Hengyong Yu Boce Zhang Source Type: research
Surveillance of pathogenic bacteria on a food matrix using machine-learning-enabled paper chromogenic arrays
This study reports significant improvements to a paper chromogenic array sensor - machine learning (PCA-ML) methodology sensing concentrations of volatile organic compounds (VOCs) emitted on a species-specific basis by pathogens by streamlining dye selection, sensor fabrication, database construction, and machine learning and validation. This approach enables noncontact, time-dependent, simultaneous monitoring of multiple pathogens (Listeria monocytogenes, Salmonella, and E. coli O157:H7) at levels as low as 1 log CFU/g with over 90% accuracy. The report provides theoretical and practical frameworks demonstrating that chro...
Source: Biosensors and Bioelectronics - January 6, 2024 Category: Biotechnology Authors: Zhen Jia Yaguang Luo Dayang Wang Emma Holliday Arnav Sharma Madison M Green Michelle R Roche Katherine Thompson-Witrick Genevieve Flock Arne J Pearlstein Hengyong Yu Boce Zhang Source Type: research
Schisandrin A enhances pathogens resistance by targeting a conserved p38 MAPK pathway
In this study, we found that Schisandrin A increased resistance to not only the Gram-negative pathogens Pseudomonas aeruginosa and Salmonella enterica but also the Gram-positive pathogen Listeria monocytogenes. Meanwhile, Schisandrin A protected the animals from the infection by enhancing the tolerance to the pathogens infection rather than by reducing the bacterial burden. Through the screening of the conserved immune pathways in Caenorhabditis elegans, we found that Schisandrin A enhanced innate immunity via p38 MAPK pathway. Furthermore, Schisandrin A increased the expression of antibacterial peptide genes, such as K08D...
Source: International Immunopharmacology - January 4, 2024 Category: Allergy & Immunology Authors: Yi Xiao Hanlin Zhou Yingwen Cui Xinting Zhu Sanhua Li Changyan Yu Nian Jiang Liu Liu Fang Liu Source Type: research
Schisandrin A enhances pathogens resistance by targeting a conserved p38 MAPK pathway
In this study, we found that Schisandrin A increased resistance to not only the Gram-negative pathogens Pseudomonas aeruginosa and Salmonella enterica but also the Gram-positive pathogen Listeria monocytogenes. Meanwhile, Schisandrin A protected the animals from the infection by enhancing the tolerance to the pathogens infection rather than by reducing the bacterial burden. Through the screening of the conserved immune pathways in Caenorhabditis elegans, we found that Schisandrin A enhanced innate immunity via p38 MAPK pathway. Furthermore, Schisandrin A increased the expression of antibacterial peptide genes, such as K08D...
Source: International Immunopharmacology - January 4, 2024 Category: Allergy & Immunology Authors: Yi Xiao Hanlin Zhou Yingwen Cui Xinting Zhu Sanhua Li Changyan Yu Nian Jiang Liu Liu Fang Liu Source Type: research
Inactivation of lmo0946 (sif) induces the SOS response and MGEs mobilization and silences the general stress response and virulence program in Listeria monocytogenes
Bacteria have evolved numerous regulatory pathways to survive in changing environments. The SOS response is an inducible DNA damage repair system that plays an indispensable role in bacterial adaptation and pathogenesis. Here we report a discovery of the previously uncharacterized protein Lmo0946 as an SOS response interfering factor (Sif) in the human pathogen Listeria monocytogenes. Functional genetic studies demonstrated that sif is indispensable for normal growth of L. monocytogenes in stress-free as well as multi-stress conditions, and sif contributes to susceptibility to β-lactam antibiotics, biofilm formation and v...
Source: Frontiers in Microbiology - January 4, 2024 Category: Microbiology Source Type: research
