Efficacy of disinfectant and bacteriophage mixture against planktonic and biofilm state of Listeria monocytogenes to control in the food industry
Int J Food Microbiol. 2024 Mar 2;413:110587. doi: 10.1016/j.ijfoodmicro.2024.110587. Epub 2024 Jan 20.ABSTRACTFresh produce and animal-based products contaminated with Listeria monocytogenes have been the main cause of listeriosis outbreaks for many years. The present investigation explored the potential of combination treatment of disinfectants with a bacteriophage cocktail to control L. monocytogenes contamination in the food industry. A mixture of 1 minimal inhibitory concentration (MIC) of disinfectants (sodium hypochlorite [NaOCl], hydrogen peroxide [H2O2], and lactic acid [LA]) and multiplicity of infection (MOI) 100...
Source: International Journal of Food Microbiology - February 1, 2024 Category: Food Science Authors: Kye-Hwan Byun Sang Ha Han Min Woo Choi Byoung-Hu Kim Sang-Do Ha Source Type: research
Molecules, Vol. 29, Pages 685: Antibacterial and Antibiofilm Effects of Photodynamic Treatment with Curcuma L. and Trans-Cinnamaldehyde against Listeria monocytogenes
In conclusion, Cur demonstrated excellent photosensitizing properties against Lm in both planktonic and biofilm states. The efficacy of Ca was lower than that of Cur. However, Ca bears potent antibiofilm effects, which vary depending on the surface on which Lm resides. Therefore, this study may help identify more effective plant-based compounds to combat L. monocytogenes in an environmentally sustainable manner. (Source: Molecules)
Source: Molecules - February 1, 2024 Category: Chemistry Authors: Aleksandra Zimi ńska Izabela Lipska Joanna Gajewska Anna Draszanowska Manuel Sim ões Magdalena A. Olszewska Tags: Article Source Type: research
GSE220480 Transcriptome Sequencing of mice eosinophils upon Listeria monocytogenes (L.m.) infection
Contributor : Jun ZhouSeries Type : Expression profiling by high throughput sequencingOrganism : Mus musculusMature eosinophils were differentiated from mouse bone marrow progenitorsWe performed transcriptome sequencing on Listeria monocytogenes infected eosinophils and resting eosinophils to shed light on the transcriptional changes of cytokines and chemokines. (Source: GEO: Gene Expression Omnibus)
Source: GEO: Gene Expression Omnibus - January 31, 2024 Category: Genetics & Stem Cells Tags: Expression profiling by high throughput sequencing Mus musculus Source Type: research
Genomic characterization of Listeria monocytogenes and Listeria innocua isolated from milk and dairy samples in Ethiopia
Listeriosis caused by Listeria monocytogenes often poses a significant threat to vulnerable populations. Dairy products have been implicated in outbreaks of listeriosis worldwide. In Ethiopia, studies have identi... (Source: BMC Genetics)
Source: BMC Genetics - January 31, 2024 Category: Genetics & Stem Cells Authors: Xiaoyuan Wei, Anwar Hassen, Karen McWilliams, Karen Pietrzen, Taejung Chung, Marysabel M éndez Acevedo, Tyler Chandross-Cohen, Edward G. Dudley, Jessie Vipham, Hassen Mamo, Tesfaye Sisay Tessema, Ashagrie Zewdu and Jasna Kovac Tags: Research Source Type: research
Impact of lactic acid bacteria strains against Listeria monocytogenes biofilms on various food-contact surfaces
Arch Microbiol. 2024 Jan 30;206(2):80. doi: 10.1007/s00203-023-03811-6.ABSTRACTListeria monocytogenes is one of the most important foodborne pathogens, causing listeriosis, a disease characterized by high mortality rates. This microorganism, commonly found in food production environments and transmitted to humans by consuming contaminated food, has the ability to form biofilms by attaching to a wide variety of surfaces. Traditional hygiene and sanitation procedures are not effective enough to completely remove L. monocytogenes biofilms from food-contact surfaces, which makes them a persistent threat to food safety. Alterna...
Source: Archives of Microbiology - January 30, 2024 Category: Microbiology Authors: Emine Din çer Source Type: research
Listeria monocytogenes utilizes glutathione and limited inorganic sulfur compounds as sources of essential cysteine
Infection and Immunity, Ahead of Print. (Source: Infection and Immunity)
Source: Infection and Immunity - January 30, 2024 Category: Infectious Diseases Authors: John C. BerudePaul KennoucheMichelle L. ReniereDaniel A. Portnoy1Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, California, USA2Department of Plant and Microbial Biology, University of California, Berkeley, Berkele Source Type: research
Hypervirulent clonal complex (CC) of Listeria monocytogenes in fresh produce from urban communities
This study aimed to determine the prevalence and virulome of Listeria in fresh produce distributed in urban communities.MethodsA total of 432 fresh produce samples were collected from farmer’s markets in Michigan and West Virginia, USA, resulting in 109 pooled samples. Listeria spp. were isolated and L. monocytogenes was subjected to genoserogrouping by PCR and genotyping by pulsed-field gel electrophoresis (PFGE). Multi-locus sequence typing (MLST) and core-genome multi-locus sequence typing (cgMLST) were conducted for clonal identification.ResultsForty-eight of 109 samples (44.0%) were contaminated with Listeria spp. L...
Source: Frontiers in Microbiology - January 29, 2024 Category: Microbiology Source Type: research
Brainstem Encephalitis as a Cause of Sudden Infant Death Syndrome
Sudden unexpected infant death or sudden infant death syndrome (SIDS) are terms used for children younger than 1 year of age who die suddenly without an obvious cause before investigation. SIDS often occurs during sleep and affects nearly 3500 children in the US each year. Despite many measures taken to prevent the illness, the incidence remains unchanged since the year 2000. In this issue of JAMA Neurology, Ramachandran et al report an investigation of 64 cases of SIDS. The authors found elevated levels of neopterin in the cerebrospinal fluid of 6 cases. Because the major source of neopterin is activated macrophages, it i...
Source: JAMA Neurology - January 29, 2024 Category: Neurology Source Type: research
Potential public health hazards related to consumption of poultry contaminated with antibiotic resistant Listeria monocytogenes in Egypt
Listeria monocytogenes is an important foodborne pathogen that incorporated into many serious infections in human especially immunocompromised individuals, pregnant women, the elderly, and newborns. The consumpt... (Source: BMC Microbiology)
Source: BMC Microbiology - January 29, 2024 Category: Microbiology Authors: Amira Ibrahim Zakaria and Rana Fahmi Sabala Tags: Research Source Type: research
Effective Inhibition of Listeria monocytogenes Biofilm Formation by Satureja rechingeri Essential Oil: Mechanisms and Implications
In this study, we investigated the inhibitory potential of Satureja rechingeri essential oil (Sr-EO) against L. monocytogenes growth and biofilm formation. Gas chromatography-mass spectrometry analysis revealed a high carvacrol content in Sr-EO, a compound with known antimicrobial properties. We examined the effects of Sr-EO on initial attachment and preformed biofilms, using crystal violet and MTT assays to quantify attached biomass and metabolic activity, respectively. Our results demonstrated that Sr-EO not only prevented initial attachment but also effectively disrupted preformed biofilms, indicating its potential as a...
Source: Current Microbiology - January 27, 2024 Category: Microbiology Authors: Siavash Maktabi Roya Rashnavadi Mohammad Reza Tabandeh Mohammad Mahmoodi Sourestani Source Type: research
Molecules, Vol. 29, Pages 596: Phenolic Compound, Antioxidant, Antibacterial, and In Silico Studies of Extracts from the Aerial Parts of Lactuca saligna L
mimi
Francesco Cacciola
Medicinal plants are considered a major source for discovering novel effective drugs. To our knowledge, no studies have reported the chemical composition and biological activities of Moroccan Lactuca saligna extracts. In this context, this study aims to characterize the polyphenolic compounds distributed in hydro-methanolic extracts of L. saligna and evaluate their antioxidant and antibacterial activities; in addition, in silico analysis based on molecular docking and ADMET was performed to predict the antibacterial activity of the identified phenolic compounds. Our results showed the identifi...
Source: Molecules - January 25, 2024 Category: Chemistry Authors: Aziz Bouymajane Fouzia Rhazi Filali Soumia Moujane Yassine Oulad El Majdoub Philipp Otzen Souhail Channaoui Abdelaziz Ed-Dra Toufik Bouddine Khalid Sellam Ali Ait Boughrous Natalizia Miceli Ammar B. Altemimi Francesco Cacciola Tags: Article Source Type: research
Bacterial adhesion inhibition by microalgal EPSs from Cylindrotheca closterium and Tetraselmis suecica biofilms
In this study, three extracellular polymeric substance (EPS) fractions extracted from microalgae biofilms of Cylindrotheca closterium (fraction C) and Tetraselmis suecica (fraction Ta rich in insoluble scale structure and fraction Tb rich in soluble EPS) were screened for their anti-adhesive properties, against eight human food-borne pathogens belonging to Escherichia coli, Staphylococcus aureus, Salmonella enterica subsp. enterica, and Listeria monocytogenes species. The results showed that the fraction Ta was the most effective inducing statistically significant reduction for three strains of E. coli, S. aureus, and L. m...
Source: Applied Microbiology and Biotechnology - January 23, 2024 Category: Microbiology Authors: Julia Mougin Anne-Sophie Pavaux Andrea Fanesi Julien Lopez Eric Pruvost Freddy Guih éneuf Antoine Sciandra Romain Briandet Filipa Lopes Source Type: research
A stochastic approach for modelling the in-vitro effect of osmotic stress on growth dynamics and persistent cell formation in Listeria monocytogenes
This study aimed to investigate a possible relationship between exposure to different salt concentrations (osmotic stress) and the amount of persisters triggered in a strain of Listeria monocytogenes. Furthermore, we described this phenomenon from a mathematical perspective through predictive microbiology models commonly used in the food field. The lag time distribution of a L. monocytogenes ATCC 7644 strain grown in broth with additional 2 %, 4 % and 6 % NaCl was evaluated using the software ScanLag. It uses office scanners to automatically record the colony growth on agar plates and evaluate the frequency distribution of...
Source: International Journal of Food Microbiology - January 23, 2024 Category: Food Science Authors: Luca Nalbone Salvatore Forgia Graziella Ziino Giorgia Sorrentino Filippo Giarratana Alessandro Giuffrida Source Type: research
Clinical and Genomic Characteristics of a Clinical Listeria Monocytogenes ST120 Isolate Recovered from a Pregnant Woman
(Source: Infection and Drug Resistance)
Source: Infection and Drug Resistance - January 23, 2024 Category: Infectious Diseases Tags: Infection and Drug Resistance Source Type: research
Isolation and characterization of lactic acid bacteria producing a potent anti-listerial bacteriocin-like inhibitory substance (BLIS) from chhurpi, a fermented milk product
The objective of this study was to identify lactic acid bacteria (LAB) that produce bacteriocin-like inhibitory substance (BLIS) and have strong anti-listerial activity. We have identified and analyzed a LAB obtained from chhurpi samples, a popular milk-derived product in the Himalayan regions of India and Nepal. The strain was studied and identified based on its morphological, biochemical, and physiological characteristics. Furthermore, the molecular 16s-rDNA analysis suggests that the strain was Lactococcus sp. RGUAM1 (98.2% similar to Lactococcus lactis subsp. hordniae NBRC 100931T). The isolated strain can produce a po...
Source: Archives of Microbiology - January 22, 2024 Category: Microbiology Authors: Atanu Manna Subhas Chandra Jana Source Type: research
