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Showing 1 to 20 of 138 for “"L. monocytogenes"”.
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Mitigating Prevalence and Persistence of L. monocytogenes using Novel Sanitation Strategies in Delis
… listeriosis cases annually. While <em>L. monocytogenes </em>is commonly found in delis (55-90%), environmental prevalence varies by store (0-40%). Study 1 evaluated efficacy of 10 standardized SSOPs by testing 28 food and non-food contact surfaces for <em>L. monocytogenes</em> over 6 …
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Identification of Inhibitory Compounds in Medicinal Mushrooms against L. monocytogenes and Z. bailii
… against E. coli O157:H7; I. obliquus against L. monocytogenes V7; I. obliquus against S. cerevisiae Y99; L. edodes against Z. bailii Y03; and I. obliquus against Z. bailii/bisporus Y108. Inhibition was more effective in yeasts than bacteria. The result from Bioscreen C showed that against L. …
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Using model miniature ham as a high-throughput tool to screen antimicrobials targeting l. Monocytogenes
The foodborne pathogen Listeria monocytogenes can be transmitted through eating contaminated foods, with outbreaks associated with ready-to-eat (RTE) products, such as deli ham, turkey, and hot dogs. Luncheon meats are often formulated with antimicrobial agents to limit the growth of this …
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Entwicklung neuartiger bakterieller Vektoren zur Übertragung von zellassoziierten Antigenen, DNA und RNA auf der Basis virulenzattenuierter L. monocytogenes
Listeria monocytogenes ist ein fakultativ humanpathogenes Bakterium und aufgrund seiner Fähigkeit, in Zellen des Wirtes einzudringen und sich im Zytoplasma der befallenen Wirtszelle zu vermehren, ein attraktiver Träger, um heterolog exprimierte Antigene in den MHC-I- und -II-Präsentationsweg …
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Antibiofilm properties of selected Lactobacillus species and their mechanism of action against Listeria monocytogenes
… effects of the foodborne pathogen Listeria monocytogenes have been observed overtime by global listeriosis outbreaks claiming many lives. The spread of this pathogen is being reported at high levels with persistence spanning over several years in food-processing environments. The main source …
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Exploration of the transcriptomes and functional contributions of Listeria monocytogenes plasmids during food production-associated stress conditions
Listeria monocytogenes is the causative agent of the foodborne disease listeriosis, which is often fatal in susceptible individuals. The persistence of L. monocytogenes in the food production environment (FPE), defined as the repeated isolation of the same strain over several months, leads to the …
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Identification of genes involved in macrophage activation and effector functions against intracellular pathogens
… normal levels of IFN-y and TNF during Listeria monocytogenes infection, the macrophage effector genes involved in confinement and killing of L. monocytogenes were postulated to be downstream of C/EBPβ. Furthermore, C/EBPβ-/- mice are highly susceptible L. monocytogenes due to impaired …
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The presence and growth characteristics of Listeria monocytogenes in blue crab (Callinectes sapidus) meat and the effectiveness of microwave energy in a pasteurization process
… the incidence and occurrence levels of Listeria monocytogenes in fresh blue crab (Callinectes sapidus) meat and its behavior in the presence of L. innocua and competing microflora were determined. An attempt was made to develop a process using microwave energy to destroy, or significantly …
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Survival of Listeria monocytogenes, Listeria innocua, and Lactic acid bacteria species in chill brine
Listeria monocytogenes is the major pathogen in ready-to-eat meat products such as deli meats and frankfurters. Contamination can occur via the salt brines that are used to cool thermally processed meats. Both L. monocytogenes and lactic acid bacteria can grow and thrive under these brine …
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Identification and Characterization of Interferon-Stimulated Regulators of Bacterial Infection
… Using an intracellular pathogen Listeria monocytogenes as a model bacterial pathogen, I sought to identify the roles of individual interferon-stimulated genes in context of bacterial infection. Previously, type I interferon has been implicated in both restricting and promoting L. …
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Placental co-culture model reveals Listeria monocytogenes utilization of monocytes for vertical transmission
Listeria monocytogenes is an opportunistic pathogen that can cross the protective placental barrier and infect the fetus, leading to congenital disabilities or death. Extracellular L. monocytogenes infection of the placenta has been well studied; however, the bacteria have not been observed …
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Interaktion humaner dendritischer Zellen mit Listeria monocytogenes
… Arbeit wurde die Interaktion von DZ mit Listeria monocytogenes untersucht. Es konnte gezeigt werden, dass L. monocytogenes effizient in unreife, humane DZ aufgenommen wird. Die Phagozytoserate von L. monocytogenes unter Zugabe von humanem Plasma war wesentlich höher als im Plasma-freien Medium …
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Interaktion von Listeria monocytogenes mit Endothelzellen
Listeria monocytogenes überwindet endotheliale Barrieren, um eine Meningitis oder Encephalitis auszulösen. Das Hindurchtreten durch diese Barriere könnte über die Invasion von Endothelzellen durch Listerien aus dem Blut und anschließender Freisetzung der Bakterien ins Gehirn erfolgen. In den ersten …
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Role of Lactic Acid Bacteria as a Bio-sanitizer to Prevent Attachment of Listeria Monocytogenes on Deli Slicer Contact Surfaces, and the Influence of Listeria Innocua on the Attachment of L. Monocytogenes on Selected Materials Located in the Food-processing Environment
<p><em>Listeria monocytogenes </em> an important foodborne pathogen that continues to be a serious problem for the food industry. This pathogen contaminates food primarily during post-harvest in the food-processing environment. Its ecology in the food-processing environment is not well understood …
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Screening Listeria monocytogenes from bulk tank milk and in-line milk filter samples for the routine monitoring of the dairy farms
… associated with listeriosis caused by Listeria monocytogenes. These new trends in consumer behavior increase the need for more effective surveillance methods for L. monocytogenes at farm level. In Finland, raw milk sales are allowed directly from the farms to the consumer. The renewed Finnish …
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Microbubbles can remove Listeria monocytogenes from the surface of stainless steels, cucumbers, and avocados
… by bacterial pathogens including Listeria monocytogenes during harvesting, packaging, or transporting. Consumers may be at risk of foodborne illness if produce become contaminated. In this project, a cavitation process (formation of bubbles in water) was studied to determine the efficacy of …
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Characterization of virulence-attenuated Listeria monocytogenes common among food and food-associated environments but rarely associated with disease
… to characterize virulence-attenuated Listeria monocytogenes isolates carrying single nucleotide polymorphisms (SNPs) leading to a premature stop codon (PMSC) in the key virulence gene, inlA. The virulence factor Internalin A (InlA; encoded by inlA), facilitates the uptake of L. monocytogenes by …
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Survival of Listeria monocytogenes in Fruit Juices During Refrigerated and Temperature-Abusive Storage
Survival of Listeria monocytogenes in apple, orange, red grape, and white grape juice was evaluated. A six-strain cocktail of L. monocytogenes was used to inoculate (approx. 7 log cfu/ml) fruit juices, which were stored at 4, 10 and 24°C for up to 61 days. Inoculated red grape juice was stored for …
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Understanding and exploiting bacteriophage-host interactions for the control and detection of listeria monocytogenes
… as biocontrol agents against the pathogen L. monocytogenes and by incorporating phages into systems for the detection of this pathogen. Phage vB_LmoH_P61, a lytic phage isolated from grass silage, was applied to food matrices for the biocontrol of L. monocytogenes which resulted in the …
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Microbiology and cell biology of the interaction between Listeria monocytogenes and Acanthamoeba spp.
L. monocytogenes is ubiquitous in environment and can grow and survive in a wide range of environmental conditions. It contaminates foods via raw materials or food processing environments. However, the current knowledge of its ecology and in particular, the mode of environmental survival and …
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