keyword
MENU ▼
Read by QxMD icon Read
search

Listeria monocytogenes

keyword
https://www.readbyqxmd.com/read/28337186/genotypes-associated-with-listeria-monocytogenes-isolates-displaying-impaired-or-enhanced-tolerances-to-cold-salt-acid-or-desiccation-stress
#1
Patricia Hingston, Jessica Chen, Bhavjinder K Dhillon, Chad Laing, Claire Bertelli, Victor Gannon, Taurai Tasara, Kevin Allen, Fiona S L Brinkman, Lisbeth Truelstrup Hansen, Siyun Wang
The human pathogen Listeria monocytogenes is a large concern in the food industry where its continuous detection in food products has caused a string of recalls in North America and Europe. Most recognized for its ability to grow in foods during refrigerated storage, L. monocytogenes can also tolerate several other food-related stresses with some strains possessing higher levels of tolerances than others. The objective of this study was to use a combination of phenotypic analyses and whole genome sequencing to elucidate potential relationships between L...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28336304/management-of-adult-infectious-encephalitis-in-metropolitan-france
#2
REVIEW
T Goulenok, R Buzelé, X Duval, F Bruneel, J P Stahl, B Fantin
Infectious encephalitis is a severe disease leading to a high mortality and morbidity. The most frequent causes include Herpes simplex virus, Varicella Zoster virus, Listeria monocytogenes, and Mycobacterium tuberculosis. Urgent treatment is required (anti-infective therapy and nonspecific supportive care). The aim of this study was to define treatment strategy, empirical and after microbiological documentation at 48hours, through a systematic literature review.
March 20, 2017: Médecine et Maladies Infectieuses
https://www.readbyqxmd.com/read/28335414/inhibition-of-listeria-monocytogenes-on-ready-to-eat-meats-using-bacteriocin-mixtures-based-on-mode-of-action
#3
Paul Priyesh Vijayakumar, Peter M Muriana
Bacteriocin-producing (Bac⁺) lactic acid bacteria (LAB) comprising selected strains of Lactobacillus curvatus, Lactococcus lactis, Pediococcus acidilactici, and Enterococcus faecium and thailandicus were examined for inhibition of Listeria monocytogenes during hotdog challenge studies. The Bac⁺ strains, or their cell-free supernatants (CFS), were grouped according to mode-of-action (MOA) as determined from prior studies. Making a mixture of as many MOAs as possible is a practical way to obtain a potent natural antimicrobial mixture to address L...
March 14, 2017: Foods (Basel, Switzerland)
https://www.readbyqxmd.com/read/28335280/pregnancy-vaccination-with-gold-glyco-nanoparticles-carrying-listeria-monocytogenes-peptides-protects-against-listeriosis-and-brain-and-cutaneous-associated-morbidities
#4
Ricardo Calderón-Gonzalez, Héctor Terán-Navarro, Elisabet Frande-Cabanes, Eva Ferrández-Fernández, Javier Freire, Soledad Penadés, Marco Marradi, Isabel García, Javier Gomez-Román, Sonsoles Yañez-Díaz, Carmen Álvarez-Domínguez
Listeriosis is a fatal infection for fetuses and newborns with two clinical main morbidities in the neonatal period, meningitis and diffused cutaneous lesions. In this study, we vaccinated pregnant females with two gold glyconanoparticles (GNP) loaded with two peptides, listeriolysin peptide 91-99 (LLO91-99) or glyceraldehyde-3-phosphate dehydrogenase 1-22 peptide (GAPDH1-22). Neonates born to vaccinated mothers were free of bacteria and healthy, while non-vaccinated mice presented clear brain affections and cutaneous diminishment of melanocytes...
August 19, 2016: Nanomaterials
https://www.readbyqxmd.com/read/28330283/multiplex-pcr-for-simultaneous-identification-of-e-coli-o157-h7-salmonella-spp-and-l-monocytogenes-in-food
#5
Thuy Trang Nguyen, Vo Van Giau, Tuong Kha Vo
The rapid detection of pathogens in food is becoming increasingly critical for ensuring the safety of consumers, since the majority of food-borne illnesses and deaths are caused by pathogenic bacteria. Hence, rapid, sensitive, inexpensive and convenient approaches to detect food-borne pathogenic bacteria is essential in controlling food safety. In this study, a multiplex PCR assay for the rapid and simultaneous detection of Escherichia coli O157:H7, Salmonella spp. and Listeria monocytogenes was established...
December 2016: 3 Biotech
https://www.readbyqxmd.com/read/28329887/listeria-monocytogenes-endophthalmitis-after-intermediate-uveitis-and-ppv-for-retinal-detachment
#6
Betül Parlar, Andreas Zettl, Heinrich Gerding
No abstract text is available yet for this article.
March 22, 2017: Klinische Monatsblätter Für Augenheilkunde
https://www.readbyqxmd.com/read/28329127/listeria-monocytogenes-cadc-regulates-cadmium-efflux-and-fine-tunes-lipoprotein-localization-to-escape-the-host-immune-response-and-promote-infection
#7
Rita Pombinho, Ana Camejo, Ana Vieira, Olga Reis, Filipe Carvalho, Maria Teresa Almeida, Jorge Campos Pinheiro, Sandra Sousa, Didier Cabanes
Listeria monocytogenes (Lm) is a major intracellular human foodborne bacterial pathogen. We previously revealed Lm-cadC as highly expressed during mouse infection. Here we show that Lm-CadC is a sequence-specific, DNA-binding and cadmium-dependent regulator of CadA, an efflux pump conferring cadmium resistance. CadC, but not CadA, is required for Lm infection in vivo. Interestingly, CadC also directly represses lspB, a gene encoding a lipoprotein signal peptidase whose expression appears detrimental for infection...
March 9, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28327520/cytotoxicity-bactericidal-and-antioxidant-activity-of-sodium-alginate-hydrosols-treated-with-direct-electric-current
#8
Żaneta Król, Krzysztof Marycz, Dominika Kulig, Monika Marędziak, Andrzej Jarmoluk
The aim of the study was to investigate the effect of using direct electric current (DC) of 0, 200, and 400 mA for five minutes on the physiochemical properties, cytotoxicity, antibacterial, and antioxidant activity of sodium alginate hydrosols with different sodium chloride concentrations. The pH, oxidation-reduction potential (ORP), electrical conductivity (EC), and available chlorine concentration (ACC) were measured. The effect of sodium alginate hydrosols treated with DC on Staphylococcus aureus, Listeria monocytogenes, Bacillus cereus, Micrococcus luteus, Escherichia coli, Salmonella enteritidis, Yersinia enterocolitica, Pseudomonas fluorescence, and RAW 264...
March 22, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28325762/a-genetic-screen-reveals-that-synthesis-of-1-4-dihydroxy-2-naphthoate-dhna-but-not-full-length-menaquinone-is-required-for-listeria-monocytogenes-cytosolic-survival
#9
Grischa Y Chen, Courtney E McDougal, Marc A D'Antonio, Jonathan L Portman, John-Demian Sauer
Through unknown mechanisms, the host cytosol restricts bacterial colonization; therefore, only professional cytosolic pathogens are adapted to colonize this host environment. Listeria monocytogenes is a Gram-positive intracellular pathogen that is highly adapted to colonize the cytosol of both phagocytic and nonphagocytic cells. To identify L. monocytogenes determinants of cytosolic survival, we designed and executed a novel screen to isolate L. monocytogenes mutants with cytosolic survival defects. Multiple mutants identified in the screen were defective for synthesis of menaquinone (MK), an essential molecule in the electron transport chain...
March 21, 2017: MBio
https://www.readbyqxmd.com/read/28323232/suspected-giant-cell-aortitis-from-multiple-aortic-structural-damage-to-fatal-listeria-sepsi-a-case-report
#10
Valeria Silvestri, Giacomo Isernia
Giant cell arteritis ( GCA) is an inflammatory vasculopathy affecting large and middle-sized vessels , specifically cranial arteries derived from carotid artery. Isolated extracranial vessel involvement can occur. Interest in extravascular manifestations is recently increasing because of diffusion of sensitive and specific imaging tools such as 18FDG PET TC . Patients have an increased relative risk of severe infection. Listeria monocytogenes infection risk is increased, and vascular system involvement and graft infection have been, even though rarely, reported...
March 16, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28323072/impairment-of-the-class-iia-bacteriocin-receptor-function-and-membrane-structural-changes-are-associated-to-enterocin-crl35-high-resistance-in-listeria-monocytogenes
#11
Emilse Masias, Fernando G Dupuy, Paulo Ricardo da Silva Sanches, Juan Vicente Farizano, Eduardo Cilli, Augusto Bellomio, Lucila Saavedra, Carlos Minahk
BACKGROUND: Enterocin CRL35 is a class IIa bacteriocin with anti-Listeria activity. Resistance to these peptides has been associated with either the downregulation of the receptor expression or changes in the membrane and cell walls. The scope of the present work was to characterize enterocin CRL35 resistant Listeria strains with MICs more than 10,000 times higher than the MIC of the WT sensitive strain. METHODS: Listeria monocytogenes INS7 resistant isolates R2 and R3 were characterized by 16S RNA gene sequencing and rep-PCR...
March 17, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28320704/listeria-monocytogenes-meningitis-preceded-by-acute-cholangitis
#12
Sarah Kyuragi Luthe, Ryota Sato, Tetsuro Maeda, Kuniko Takahashi
Listeria monocytogenes is a well-known cause of meningitis in immunocompromised patients. This organism has a growing significance for community-acquired meningitis, which should have ampicillin added to the usual regimen. We describe a case of L. monocytogenes meningitis preceded by cholangitis. This case suggests gastrointestinal symptoms preceding meningitis may be a clue of listeriosis. It is important for physicians to consider L. monocytogenes as a cause of bacterial meningitis in patients with altered mental status preceded by gastrointestinal symptoms, especially in the immunocompromised population...
March 20, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28319869/biofilm-inhibition-formation-of-clinical-strains-of-pseudomonas-aeruginosa-mutans-photocatalytic-activity-of-azo-dye-and-gc-ms-analysis-of-leaves-of-lagerstroemia-speciosa
#13
V Sai Saraswathi, Neethu Kamarudheen, K V Bhaskara Rao, K Santhakumar
The investigation was conducted to analyse the bioactive compounds from the leaf extracts of L. speciosa by GC-MS. The extracts were screened for antibacterial and antibiofilm activities against potential clinical strains. The bioactive compounds from the leaves of L. speciosa were extracted by soxhlet continuous extraction method and their chemical composition was analysed by Gas Chromatography-Mass Spectroscopy (GC-MS). The antibacterial activity was evaluated against clinical strain like Staphylococcus aureus, Escherichia coli, P...
March 9, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28319799/occurrence-of-hepatitis-a-and-e-and-norovirus-gi-and-gii-in-ready-to-eat-vegetables-in-italy
#14
V Terio, M Bottaro, E Pavoni, M N Losio, A Serraino, F Giacometti, V Martella, A Mottola, A Di Pinto, G Tantillo
Fresh vegetables and their ready-to-eat (RTE) salads have become increasingly recognized as potential vehicles for foodborne diseases. The EU Reg. 1441/2007 establishes microbiological criteria for bacterial pathogens for products placed on the market during their shelf-life (i.e. Salmonella spp., Listeria monocytogenes) for pre-cut fruits and vegetables (RTE) whilst it does not address the problem of contamination by enteric viruses. In this study we investigated the contamination by hepatitis A virus (HAV), hepatitis E virus (HEV) and norovirus (NoV) in 911 ready-to-eat vegetable samples taken from products at retail in Apulia and in Lombardia...
March 14, 2017: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/28317760/antibacterial-activity-of-phenyllactic-acid-against-listeria-monocytogenes-and-escherichia-coli-by-dual-mechanisms
#15
Yawei Ning, Aihong Yan, Kun Yang, Zhixin Wang, Xingfeng Li, Yingmin Jia
Phenyllactic acid (PLA), a phenolic acid phytochemical, is considered to be a promising candidate for use as a chemical preservative due to its broad antimicrobial activity. The antibacterial target of PLA has rarely been reported, thus investigations were performed to elucidate the antibacterial mechanism of PLA against Listeria monocytogenes and Escherichia coli. Flow cytometry analysis stained with propidium iodide (PI) demonstrated that PLA could damage the membrane integrity of L. monocytogenes, while it could not disrupt that of E...
August 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28314729/efficacy-of-a-sonicating-swab-for-removal-and-capture-of-listeria-monocytogenes-in-biofilm-on-stainless-steel
#16
Tobyn A Branck, Matthew J Hurley, Gianna N Prata, Christina A Crivello, Patrick J Marek
Listeria monocytogenes is of great concern in food processing facilities because it persists in biofilms, potentiating biotransfer. Stainless steel is commonly used for food contact surfaces and transport containers. L. monocytogenes biofilm on stainless steel served as a model system for surface sampling to test the performance of a sonicating swab in comparison to a standard cotton swab. Swab performance and consistency were determined using total viable counts. Stainless steel coupons sampled with both swabs were examined with SEM to visualize biofilms and surface structures (i...
March 17, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28299684/bacterial-detection-using-peptide-based-platform-and-impedance-spectroscopy
#17
Hashem Etayash, Thomas Thundat, Kamaljit Kaur
Antimicrobial peptides have the ability to function as bio-recognition elements in the detection of bacteria. For instance, we showed that Leucocin A, an antimicrobial peptide from class IIa bacteriocins, binds gram-positive Listeria monocytogenes with higher affinity than other gram-positive bacteria like S. aureus, L. innocua, and E. faecalis. The binding was detected using impedance spectroscopy when Leucocin A immobilized on impedance electrodes binds bacteria from a sample. Here we highlight the strength of utilizing Leucocin A as a bio-recognition probe in biosensor platforms and provide details on its application in real-time bacterial detection using electrochemical impedance spectroscopy...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28299290/anti-listeria-activity-of-lactic-acid-bacteria-in-two-traditional-sicilian-cheeses
#18
Maria Luisa Scatassa, Raimondo Gaglio, Cinzia Cardamone, Giusi Macaluso, Luigi Arcuri, Massimo Todaro, Isabella Mancuso
Listeria monocytogenes is a pathogen frequently found in dairy products, and its growth is difficult to control. Bacteriocin-like inhibitory substances (BLIS), produced by lactic acid bacteria (LAB), having proven in vitro anti-Listeria activity, could provide an innovative approach to control L. monocytogenes; however, this application needs to be evaluated in vivo. In this study, twenty LAB strains isolated from different Sicilian dairy environments were tested for control of growth of L. monocytogenes in three different experimental trials...
January 24, 2017: Italian Journal of Food Safety
https://www.readbyqxmd.com/read/28296382/human-%C3%AE-defensin-6-a-small-peptide-that-self-assembles-and-protects-the-host-by-entangling-microbes
#19
Phoom Chairatana, Elizabeth M Nolan
Human α-defensin 6 (HD6) is a 32-residue cysteine-rich peptide that contributes to innate immunity by protecting the host at mucosal sites. This peptide is produced in small intestinal Paneth cells, stored as an 81-residue precursor peptide named proHD6 in granules, and released into the lumen. One unusual feature of HD6 is that it lacks the broad-spectrum antimicrobial activity observed for other human α-defensins, including the Paneth cell peptide human α-defensin 5 (HD5). HD6 exhibits unprecedented self-assembly properties, which confer an unusual host-defense function...
March 15, 2017: Accounts of Chemical Research
https://www.readbyqxmd.com/read/28290331/biofilm-producing-ability-of-listeria-monocytogenes-isolates-from-brazilian-cheese-processing-plants
#20
Sarah Hwa In Lee, Giovana Verginia Barancelli, Tarsila Mendes de Camargo, Carlos Humberto Corassin, Roice Eliana Rosim, Adriano Gomes da Cruz, Leandro Pereira Cappato, Carlos Augusto Fernandes de Oliveira
The persistence of Listeria monocytogenes in food industry environments has been associated to the ability of specific isolates to produce biofilms. This study aimed to evaluate the biofilm production of 85 L. monocytogenes strains previously isolated from samples of cheese, brine and the environment of two cheese processing plants located in São Paulo, Brazil. The L. monocytogenes isolates belonged to serotypes 4b, 1/2b and 1/2c, yielded 30 different pulsotypes by pulsed-field gel electrophoresis (PFGE), and were submitted to biofilm-formation assays on polystyrene microplates and stainless steel coupons incubated statically at 35±0...
January 2017: Food Research International
keyword
keyword
51306
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"