Publications
| Title | Abstract | Year(sorted descending) Filter | PMID Filter |
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| comparison of the microbiological quality and safety between conventional and organic vegetables sold in malaysia. | given the remarkable increase of public interest in organic food products, it is indeed critical to evaluate the microbiological risk associated with consumption of fresh organic produce. organic farming practices including the use of animal manures may increase the risk of microbiological contamination as manure can act as a vehicle for transmission of foodborne pathogens. this study aimed to determine and compare the microbiological status between organic and conventional fresh produce at the ... | 2017 | 28824567 |
| a suicidal strain of listeria monocytogenes is effective as a dna vaccine delivery system for oral administration. | in this study we determined the in vivo activity of model ovalbumin vaccines delivered by direct intramuscular delivery of plasmid dna or oral delivery using a recombinant suicidal listeria monocytogenes strain (rsδ2). in a previous report we described how rsδ2 is capable of delivering luciferase, as protein or dna, in vitro, into non-dividing intestinal epithelial cells (kuo et al., 2009). this is achieved by engineering a dual expression shuttle vector, pdulx-luc, that replicates in e. coli an ... | 2017 | 28822642 |
| preparation, characterization and antibacterial activity of oxidized κ-carrageenan. | the oxidized κ-carrageenans with different oxidation levels were prepared through the hydrogen peroxide and copper sulfate redox system. the oxidation level of oxidized κ-carrageenan was successfully controlled by adjusting the dosage of hydrogen peroxide. the results showed that the microtopography of oxidized κ-carrageenan changed from rough granules to smooth flakes, mainly resulting from the easily melting property of oxidized κ-carrageenan induced by introduced carboxyl and aldehyde groups. ... | 2017 | 28821027 |
| short communication: detection of stx2 and elt genes in bovine milk by using a multiplex pcr system. | the aim of this study was to detect 2 important toxin genes from diarrheagenic escherichia coli (dec) in bovine milk using a new multiplex pcr. to standardize the multiplex pcr, the stx2 and elt genes were investigated for the detection of shiga toxin-producing escherichia coli (stec) and enterotoxigenic e. coli (etec), respectively. the dna template was prepared with a thermal procedure (boiling) and a commercial kit. samples consisted of uht and pasteurized milk, both skimmed, and stec and ete ... | 2017 | 28803013 |
| comparative analysis of the composition and active property evaluation of certain essential oils to assess their potential applications in active food packaging. | the antifungal, antibacterial, and antioxidant activity of four commercial essential oils (eos) (thyme, clove, rosemary, and tea tree) from romanian production were studied in order to assess them as bioactive compounds for active food packaging applications. the chemical composition of the oils was determined with the folin-ciocâlteu method and gas chromatography coupled with mass spectrometry and flame ionization detectors, and it was found that they respect the afnor/iso standard limits. the ... | 2017 | 28772407 |
| synthesis and in vitro evaluation of peracetyl and deacetyl glycosides of eugenol, isoeugenol and dihydroeugenol acting against food-contaminating bacteria. | essential oils, as well as their separate components, have shown promise as alternatives to synthetic preservatives. therefore, it would be interesting to optimize the effect of these compounds and to evaluate their applicability as additives in food. to this end, six peracetyl and deacetyl glycosides were synthesized from eugenol, isoeugenol and dihydroeugenol. all of the glycosides were characterized by ir and nmr. the synthesized compounds and their aglycones were evaluated to determine their ... | 2017 | 28763946 |
| anti-adhesion and anti-biofilm potential of organosilane nanoparticles against foodborne pathogens. | nowadays, modification of surfaces by nanoparticulate coatings is a simple process that may have applications in reducing the prevalence of bacterial cells both on medical devices and food processing surfaces. to this direction, biofilm biological cycle of salmonella typhimurium, listeria monocytogenes, escherichia coli o157:h7, staphylococcus aureus, and yersinia enterocolitica on stainless steel and glass surfaces, with or without nanocoating was monitored. to achieve this, four different comm ... | 2017 | 28744277 |
| development of antimicrobial packaging film made from poly(lactic acid) incorporating titanium dioxide and silver nanoparticles. | polylactide (pla)/nano-tio₂ and pla/nano-tio₂/nano-ag blends films were prepared by a solvent volatilization method. compared to pure pla film, the nano-blend films have low water vapor permeability (wvp) and a poor transparency. with the increase of the nps in the pla, the tensile strength (ts) and elastic modulus (em) decreased, while the elongation at break (ε) increased. sem analysis indicated a rougher cross-section of the nano-blend films. according to the ftir analysis, no new chemical bo ... | 2017 | 28703753 |
| prevalence and antibiotic resistance profiles of cerebrospinal fluid pathogens in children with acute bacterial meningitis in yunnan province, china, 2012-2015. | acute bacterial meningitis is still considered one of the most dangerous infectious diseases in children. to investigate the prevalence and antibiotic resistance profiles of cerebrospinal fluid (csf) pathogens in children with acute bacterial meningitis in southwest china, csf samples from 179 meningitis patients (3 days to 12 years old) with positive culture results were collected from 2012 to 2015. isolated pathogens were identified using the vitek-32 system. gram stain results were used to gu ... | 2017 | 28662145 |
| effects of heat treatment on the antioxidative and anti-inflammatory properties of orange by-products. | this study investigated the changes in the functional components, antioxidative activities, antibacterial activities, anti-inflammatory activities of orange (citrus sinensis (l.) osbeck) by-products (obp) on heat treatment at 50 and 100 °c (hereafter denoted 50d and 100d extracts, respectively). optimal heating conditions were also investigated. the total phenolic content, flavonoid content and antioxidative activities of obp extracts significantly increased on heat treatment. the lag time of cu ... | 2017 | 28653733 |
| tolerance development in listeria monocytogenes-escherichia coli dual-species biofilms after sublethal exposures to pronase-benzalkonium chloride combined treatments. | this study was designed to assess the effects that sublethal exposures to pronase (prn) and benzalkonium chloride (bac) combined treatments have on listeria monocytogenes-escherichia coli dual-species biofilms grown on stainless steel in terms of tolerance development (td) to these compounds. additionally, fluorescence microscopy was used to observe the changes of the biofilm structure. prn-bac exposure was carried out using three different approaches and td was evaluated treating biofilms with ... | 2017 | 28648294 |
| removal of foodborne pathogen biofilms by acidic electrolyzed water. | biofilms, which are complex microbial communities embedded in the protective extracellular polymeric substances (eps), are difficult to remove in food production facilities. in this study, the use of acidic electrolyzed water (aew) to remove foodborne pathogen biofilms was evaluated. we used a green fluorescent protein-tagged escherichia coli for monitoring the efficiency of aew for removing biofilms, where under the optimal treatment conditions, the fluorescent signal of cells in the biofilm di ... | 2017 | 28638370 |
| bacterial meningitis complicating the course of liver cirrhosis. | meningitis is rarely reported in studies investigating bacterial infections in patients affected by liver cirrhosis. we investigated the findings of bacterial meningitis in patients affected by liver cirrhosis referred to our department in a 16-year period. | 2017 | 28616745 |
| predicting and modelling the growth of potentially pathogenic bacteria in coalho cheese. | coalho is a semihard medium- to high-moisture cheese produced in various states in the northeastern region of brazil. this study was conducted to predict the growth kinetics (maximum growth rate, grmax) of escherichia coli, listeria monocytogenes, salmonella, and staphylococcus aureus using the combase predictor with various combinations of temperature, ph, and water activity (aw) in commercial coalho cheese samples. the growth of two antibiotic-resistant derivative strains of l. monocytogenes ( ... | 2017 | 28604174 |
| efficacy of combined sous vide-microwave cooking for foodborne pathogen inactivation in ready-to-eat chicory stems. | there is a variety of different food processing methods, which can be used to prepare ready-to-eat foods. however, the need to preserve the freshness and nutritional qualities leads to the application of mild technologies which may be insufficient to inactivate microbial pathogens. in this work, fresh chicory stems were packed under a vacuum in films, which were transparent to microwaves. these were then exposed to microwaves for different periods of time. the application of sous vide microwave ... | 2017 | 28597952 |
| presence of human pathogens in produce from retail markets in northern germany. | two hundred fresh produce samples (cucumber, carrots, herbs, leaf lettuce, and ready-to-eat mixed salad leaves) were obtained from retail in northern germany in 2015. these were investigated for microbial contamination and the presence of foodborne pathogens, including listeria monocytogenes, salmonella serovars, presumptive bacillus (b.) cereus, and shiga toxin-producing escherichia coli using culture-dependent (enrichment, plating on selective media) and -independent (real-time polymerase chai ... | 2017 | 28594569 |
| microrna-21 limits uptake of listeria monocytogenes by macrophages to reduce the intracellular niche and control infection. | mirnas are important post-transcriptional regulators of gene expression. mirna expression is a crucial part of host responses to bacterial infection, however there is limited knowledge of their impact on the outcome of infections. we investigated the influence of mir-21 on macrophage responses during infection with listeria monocytogenes, which establishes an intracellular niche within macrophages. mir-21 is induced following infection of bone marrow-derived macrophages (bmdms) with listeria. mi ... | 2017 | 28589100 |
| inhibitor-assisted high-pressure inactivation of bacteria in skim milk. | the combined inactivation effects of high hydrostatic pressure (hhp) and antimicrobial compounds (potassium sorbate and ε-polylysine [ε-pl]) on 4 different bacterial strains present in skim milk and the effect of these treatments on milk quality were investigated in this study. hhp treatment at 500 mpa for 5 min reduced the populations of escherichia coli, salmonella enterica typhimurium, listeria monocytogenes, and staphylococcus aureus from 6.5 log colony-forming units (cfus) or higher to less ... | 2017 | 28556370 |
| incorporating zataria multiflora boiss. essential oil and sodium bentonite nano-clay open a new perspective to use zein films as bioactive packaging materials. | active zein films with different levels of zataria multiflora boiss. essential oil were produced successfully. to enhance properties of this biopolymer for food packaging applications, sodium bentonite clay was used at two levels (2 and 4%). the results indicated that the addition of z. multiflora boiss. essential oil caused a reduction in tensile strength and young's modulus and slight increase in the percent of elongation at break of the films. maximum solubility in water and water vapor perme ... | 2017 | 28549407 |
| surfactin-loaded polyvinyl alcohol (pva) nanofibers alters adhesion of listeria monocytogenes to polystyrene. | surfactin-loaded polyvinyl alcohol (pva) nanofibers were spun using gravity electrospinning. scanning electron microscopy (sem) images showed that nanofibers spun with surfactin are free from bead formation and uniform in diameter. the average nanofiber diameters were decreased (273±39nm, 259±39nm and 217±33nm) with increasing levels of surfactin (0.5, 1.0 and 1.5%, w/v) into pva (10%, w/v). the 10% (w/v) pva had average fiber diameter of 303±33nm. atomic force microscopy (afm) analysis showed t ... | 2017 | 28532029 |
| water for agriculture: the convergence of sustainability and safety. | agricultural water is a precious and limited resource. increasingly more water types and sources are being explored for use in irrigation within the united states and across the globe. as outlined in this chapter, the produce safety rule (psr) in the food safety and modernization act (fsma) provide irrigation water standards for application of water to fruits and vegetables consumed raw. these rules for production and use of water will continue to develop and be required as the world experiences ... | 2017 | 28527182 |
| outbreak-related disease burden associated with consumption of unpasteurized cow's milk and cheese, united states, 2009-2014. | the growing popularity of unpasteurized milk in the united states raises public health concerns. we estimated outbreak-related illnesses and hospitalizations caused by the consumption of cow's milk and cheese contaminated with shiga toxin-producing escherichia coli, salmonella spp., listeria monocytogenes, and campylobacter spp. using a model relying on publicly available outbreak data. in the united states, outbreaks associated with dairy consumption cause, on average, 760 illnesses/year and 22 ... | 2017 | 28518026 |
| case-control study shows that neonatal pneumococcal meningitis cannot be distinguished from group b streptococcus cases. | streptococcus pneumoniae (s. pneumoniae) is sometimes implicated in neonatal bacterial meningitis. this study described the demographic, clinical and biological features of neonatal s. pneumoniae meningitis and compared pneumococcal and group b streptococcal (gbs) neonatal meningitis. | 2017 | 28508419 |
| preparation and properties of carbohydrate-based composite films incorporated with cuo nanoparticles. | the present study aimed to develop the carbohydrate biopolymer based antimicrobial films for food packaging application. the nanocomposite films of various biopolymers and copper oxide nanoparticles (cuonps) were prepared by solvent casting method. the nanocomposite films were characterized using sem, ftir, xrd, and uv-vis spectroscopy. the thermal stability, uv barrier, water vapor permeability, and antibacterial activity of the composite films were also evaluated. the surface morphology of the ... | 2017 | 28504145 |
| effects of sorbic acid-chitosan microcapsules as antimicrobial agent on the properties of ethylene vinyl alcohol copolymer film for food packaging. | this paper discusses the possibility of using sorbic acid-chitosan microcapsules (s-mps) as an antibacterial component of active ethylene vinyl alcohol copolymer (evoh) film. s-mps with a diameter of approximately 1 to 4 μm showed a sorbic acid loading capacity of 46.5%. addition of s-mps (3%, w/w) increased the tensile strength, haze, oxygen, and water vapor barrier properties, as well as reduced the elongations at break and transmittance of s-mps-evoh (s-mp-evoh) film. antibacterial tests show ... | 2017 | 28488775 |
| etiology and laboratory abnormalities in bacterial meningitis in neonates and young infants. | we conducted a retrospective review of electronic medical records of all cases of bacterial meningitis in neonates and young infants at our institution from 2004 to 2014. fifty-six cases were identified. the most common causative organism was group b streptococcus, followed by escherichia coli and then listeria monocytogenes. forty-four of the 56 patients in the study had abnormalities of the blood white blood cell (wbc) count. the most common wbc count abnormalities were leukopenia and elevatio ... | 2017 | 28484584 |
| formulation and shelf-life of fish burgers served to preschool children. | consumer is very careful about healthiness; in this context nutritionists often highlight the importance of fish for human nutrition because of their protein and fatty acid composition. in order to stimulate utilisation and consumption of fish species by unusual target groups such as children, the aim of this research was to formulate and to evaluate shelf-life and nutritional values of fish preparations stored in modified atmosphere packaging (map). fish species used for trail were trachurus tr ... | 2017 | 28462206 |
| short communication: microbiological quality of raw cow milk and its association with herd management practices in northern china. | contamination of raw milk with bacterial pathogens is potentially hazardous to human health. the aim of this study was to evaluate the total bacteria count (tbc) and presence of pathogens in raw milk in northern china along with the associated herd management practices. a total of 160 raw milk samples were collected from 80 dairy herds in northern china. all raw milk samples were analyzed for tbc and pathogens by culturing. the results showed that the number of raw milk samples with tbc <2 × 10( ... | 2017 | 28434737 |
| application of electrolysed oxidising water as a sanitiser to extend the shelf-life of seafood products: a review. | electrolysed oxidising water (e.o. water) is produced by electrolysis of sodium chloride to yield primarily chlorine based oxidising products. at neutral ph this results in hypochlorous acid in the un-protonated form which has the greatest oxidising potential and ability to penetrate microbial cell walls to disrupt the cell membranes. e.o. water has been shown to be an effective method to reduce microbial contamination on food processing surfaces. the efficacy of e.o. water against pathogenic ba ... | 2017 | 28416883 |
| the first report on listeria monocytogenes producing siderophores and responds positively to n-acyl homoserine lactone (ahl) molecules by enhanced biofilm formation. | listeria monocytogenes are gram-positive well-known emerging food-borne pathogens causing listeriosis in humans. in the present study, we have isolated biofilm-forming listeria sp. from utensils used by a local milk collection dairy society at usgao goa, which collects milk for goa dairy. through biochemical tests and 16s rrna sequence analysis, the bacterium was confirmed to be l. monocytogenes and designated as strain bn3, having genbank accession number mf095110. we report for the first time ... | 2017 | 28762063 |
| next generation sequencing-based multigene panel for high throughput detection of food-borne pathogens. | contamination of food by chemicals or pathogenic bacteria may cause particular illnesses that are linked to food consumption, commonly referred to as foodborne diseases. bacteria are present in/on various foods products, such as fruits, vegetables and ready-to-eat products. bacteria that cause foodborne diseases are known as foodborne pathogens (fbps). accurate detection methods that are able to reveal the presence of fbps in food matrices are in constant demand, in order to ensure safe foods wi ... | 2017 | 28578266 |
| two novel roles of buffalo milk lactoperoxidase, antibiofilm agent and immunomodulator against multidrug resistant salmonella enterica serovar typhi and listeria monocytogenes. | the increasing occurrence of multidrug resistant bacteria causing bacteremia infection, constitutes a major health problem, difficult-to-treat bacteremia due to its ability to form biofilm. buffalo milk lactoperoxidase (bmlpo) is effective and safe to use as bacteriostatic agent. the mic of bmlpo and amikacin were used to evaluate the antibiofilm activity against resistant l. monocytogenes and s. typhi. prophylactic effects of bmlpo against l. monocytogenes and s. typhi bacteremia in vivo have b ... | 2017 | 28587762 |
| antibacterial effects of lactobacillus isolates of curd and human milk origin against food-borne and human pathogens. | this study was undertaken to assess the antibacterial efficacy of lactobacilli isolated from curd and human milk samples. identities of thirty-one different lactobacilli (20 from curd and 11 from human milk) were confirmed by genus-specific pcr and 16s rrna-based sequencing. these strains belonged to five species, lactobacillus casei, l. delbrueckii, l. fermentum, l. plantarum, and l. pentosus. antibacterial activities of cell-free supernatants (cfss) of all the lactobacillus isolates were estim ... | 2017 | 28401466 |
| characterization of antimicrobial properties of salmonella phage felix o1 and listeria phage a511 embedded in xanthan coatings on poly(lactic acid) films. | beyond simply providing a barrier between food and external contaminants, active packaging technologies aim to inhibit pathogen survival and growth within the packaged environment. bacteriophages have a proven track record as targeted antimicrobials but have yet to be successfully integrated in active packaging without serious loss of activity. we have developed two bacteriophage based xanthan coatings on poly(lactic acid) (pla) film which significantly inhibits salmonella typhimurium and lister ... | 2017 | 28576360 |
| isolation and characterization of listeria monocytogenes from the black-headed gull feces in kunming, china. | listeria monocytogenes is among the most important foodborne pathogens, which can be isolated from bird feces. the aim of this study was to examine the prevalence, genotypes, virulence factors and drug-resistance characteristics of l. monocytogenes isolated from the black-headed gull in kunming, china. serotypes and virulence genes were identified by polymerase chain reaction. pulsed-field gel electrophoresis (pfge) and multi-locus sequence typing (mlst) methods were used to describe the genetic ... | 2017 | 28473260 |
| efficacy of radiant catalytic ionization to reduce bacterial populations in air and on different surfaces. | air contamination by biological agents is often observed in medical or veterinary facilities and industrial plants. bioaerosols may sediment and pose the surface contamination. microorganisms present on them may become a source of infections among humans and food contamination. this study determined the use of oxidative gases, including ozone and peroxide, generated by the radiant catalytic ionization (rci) cell for the inactivation of acinetobacter baumannii, escherichia coli, enterococcus faec ... | 2017 | 28803189 |
| microorganisms of the intestinal microbiota of oncorhynchus mykiss produce antagonistic substances against bacteria contaminating food and causing disease in humans. | the objective was to analyse the antibacterial ability of members of the intestinal microbiota of oncorhynchus mykiss specimens on several bacterial target strains that contaminate food and cause disease in humans. bacterial colonies from an intestinal portion of the 20 specimens of o. mykiss were obtained in different culture media. several of the colonies showed antibacterial action on different target strains. the bacterial species with the highest antagonistic capacity were hafnia alvei and ... | 2017 | 28713788 |
| the antibacterial and antifungal activity of six essential oils and their cyto/genotoxicity to human hel 12469 cells. | six essential oils (from oregano, thyme, clove, lavender, clary sage, and arborvitae) exhibited different antibacterial and antifungal properties. antimicrobial activity was shown against pathogenic (escherichia coli, salmonella typhimurium, yersinia enterocolitica, staphylococcus aureus, listeria monocytogenes, and enterococcus faecalis) and environmental bacteria (bacillus cereus, arthrobacter protophormiae, pseudomonas fragi) and fungi (chaetomium globosum, penicillium chrysogenum, cladospori ... | 2017 | 28811611 |
| production of recombinant antimicrobial polymeric protein beta casein-e 50-52 and its antimicrobial synergistic effects assessment with thymol. | accelerating emergence of antimicrobial resistance among food pathogens and consumers' increasing demands for preservative-free foods are two contemporary challenging aspects within the food industry. antimicrobial packaging and the use of natural preservatives are promising solutions. in the present study, we used beta-casein-one of the primary self-assembly proteins in milk with a high polymeric film production capability-as a fusion partner for the recombinant expression of e 50-52 antimicrob ... | 2017 | 28561787 |
| antimicrobial activity and chemical composition of brunfelsia uniflora flower oleoresin extracted by supercritical carbon dioxide. | brunfelsia genus is traditionally utilized in popular medicine due to its antibacterial and antifungal properties to name but a few. however, studies on the antimicrobial activity of brunfelsia uniflora flower oleoresin have not been found yet. this study aimed to evaluate the chemical composition and antimicrobial activity of b. uniflora flower oleoresin obtained by supercritical carbon dioxide. oleoresin from the plant dried flowers was obtained by carbon dioxide, and the chemical composition ... | 2017 | 28407186 |
| biogenic fabrication of cunps, cu bioconjugates and in vitro assessment of antimicrobial and antioxidant activity. | in the present study, the authors synthesised copper nanoparticles (cunps) by using extract of zingiber officinale (ginger) and later the nps were bioconjugated with nisin, which shows antimicrobial activity against food spoilage microorganisms. cunps and its bioconjugate were characterised by ultraviolet-vis spectroscopy, np tracking analysis, zetasizer, transmission electron microscopy analysis, x-ray diffraction and fourier transform infra-red (ftir) spectroscopy. zeta potential of cunps and ... | 2017 | 28745291 |
| fungal chitosan and lycium barbarum extract as anti-listeria and quality preservatives in minced catfish. | listeria monocytogenes is a foodborne bacterial pathogen that causes serious health risks. chitosan (ch) is a bioactive polymer that could be effectively applied for foodstuffs biopreservation. lycium barbarum (goji berry) is ethnopharmaceutical fruit that have diverse health protecting benefits. chitosan was produced from a. niger and employed with l. barbarum extract (lbe) as blends for listeria control and quality biopreservation of african catfish mince (clarias gariepinus). chitosan could u ... | 2017 | 28655659 |
| holographic deep learning for rapid optical screening of anthrax spores. | establishing early warning systems for anthrax attacks is crucial in biodefense. despite numerous studies for decades, the limited sensitivity of conventional biochemical methods essentially requires preprocessing steps and thus has limitations to be used in realistic settings of biological warfare. we present an optical method for rapid and label-free screening of bacillus anthracis spores through the synergistic application of holographic microscopy and deep learning. a deep convolutional neur ... | 2017 | 28798957 |
| phenolic acids and flavonoids of peanut by-products: antioxidant capacity and antimicrobial effects. | peanut skin (ps) and meal from dry-blanched peanuts (mdbp) were evaluated as sources of phenolic compounds. ps rendered the highest total phenolic content, antioxidant capacity towards abts radical cation, dpph and hydroxyl radicals as well as reducing power. phenolic acids were present in ps and mdbp whereas proanthocyanidins and monomeric flavonoids were found only in ps as identified by hplc-dad-esi-ms(n). procyanidin-rich extracts prevented oxidation in non-irradiated and gamma-irradiated fi ... | 2017 | 28764032 |
| detection of eight foodborne bacterial pathogens by oligonucleotide array hybridization. | simultaneous and rapid detection of multiple foodborne bacterial pathogens is important for the prevention of foodborne illnesses. | 2017 | 28713514 |
| implications of neuroinvasive bacterial peptides on rodents behaviour and neurotransmission. | neuroinvasive microbes are capable of applying their influences on the autonomic nervous system (ans) of the host followed by the involvement of central nervous system (cns) by releasing extracellular metabolites that may cause alterations in the biochemical and neurophysiological environment. consequently synaptic, neuroendocrine, peripheral immune, neuro-immune, and behavioural responses of the host facilitate the progression of infection. the present study was designed to extrapolate the effe ... | 2017 | 28671588 |
| isolation and preliminary characterization of a bacteriocin-producer bacillus strain inhibiting methicillin resistant staphylococcus aureus. | in a multivalent approach to discover new antimicrobial substance, a total of 160 bacilli were isolated from termitarium soil, characterized on the basis of their morphological and physiological characters and screened for their antimicrobial activity by agar well diffusion method against certain drug resistant pathogenic bacteria such as staphylococcus aureus, methicillin resistant staphylococcus aureus and common food contaminating bacteria listeria monocytogenes. after preliminary screening, ... | 2017 | 28605978 |
| use of whey as a culture medium for bacillus clausii for the production of protein hydrolysates with antimicrobial and antioxidant activity. | the use of whey as a natural culture medium to produce hydrolysates with antimicrobial from bacillus clausii is the objective of this research. the fermentation process was carried out at 25 ℃ for five days, where proteolytic activity, soluble peptides quantification, and antimicrobial activity using the disc diffusion method were determined every day. the fermented whey reached values of proteolytic activity between 90 and 260 u ml(-1) and a production of soluble peptides between 100 and 2070 ... | 2017 | 28816527 |
| utilization of industrial waste for the production of bio-preservative from bacillus licheniformis me1 and its application in milk and milk-based food products. | the bio-preservative efficacy of a partially purified antibacterial peptide (ppabp) produced by bacillus licheniformis me1 in an economical medium developed using agro-industry waste was evaluated by direct application in milk and milk-based food products. the addition of ppabp in milk samples stored at 4 ± 2 °c and 28 ± 2 °c resulted in the growth inhibition of pathogens listeria monocytogenes scott a, micrococcus luteus atcc 9341, and staphylococcus aureus fri 722. the shelf life of milk sampl ... | 2017 | 28842843 |
| lactolisterin bu, a novel class ii broad spectrum bacteriocin from lactococcus lactis subsp. lactis bv. diacetylactis bgbu1-4. | lactococcus lactis subsp. lactis bv. diacetylactis bgbu1-4 produces a novel bacteriocin, lactolisterin bu, with strong antimicrobial activity against many species of gram-positive bacteria, including important food spoilage and food-borne pathogens such as listeria monocytogenes, staphylococcus aureus, bacillus sp. and streptococci. lactolisterin bu was extracted from the cell surface of bgbu1-4 by propan-2-ol and purified to homogeneity by c18 solid phase extraction and reversed phase hplc. the ... | 2017 | 28842543 |
| genetic and environmental factors influence listeria monocytogenes nisin resistance. | listeria monocytogenes nisin resistance increases when first exposed to nacl and other stresses, such as low ph. in addition to environmental stressors, specific genomic elements can confer nisin resistance, such as the stress survival islet (ssi-1). as ssi-1 is variably present among l. monocytogenes strains, we wanted to determine if ssi-1 was associated with salt-induced nisin resistance. | 2017 | 28452154 |
| insights into clpxp proteolysis: heterooligomerization and partial deactivation enhance chaperone affinity and substrate turnover in listeria monocytogenes. | caseinolytic proteases (clpp) are important for recognition and controlled degradation of damaged proteins. while the majority of bacterial organisms utilize only a single clpp, listeria monocytogenes expresses two isoforms (lmclpp1 and lmclpp2). lmclpps assemble into either a lmclpp2 homocomplex or a lmclpp1/2 heterooligomeric complex. the heterocomplex in association with the chaperone clpx, exhibits a boost in proteolytic activity for unknown reasons. here, we use a combined chemical and bioc ... | 2017 | 28451288 |
| structural basis of crispr-spycas9 inhibition by an anti-crispr protein. | crispr-cas9 systems are bacterial adaptive immune systems that defend against infection by phages. through the rna-guided endonuclease activity of cas9 they degrade double-stranded dna with a protospacer adjacent motif (pam) and sequences complementary to the guide rna. recently, two anti-crispr proteins (acriia2 and acriia4 from listeria monocytogenes prophages) were identified, both of which inhibit streptococcus pyogenes cas9 (spycas9) and l. monocytogenes cas9 activity in bacteria and human ... | 2017 | 28448066 |
| prevalence, antimicrobial susceptibility and multiplex pcr-serotyping of listeria monocytogenes isolated from humans, foods and livestock in iran. | listeria monocytogenes is a foodborne pathogen causing listeriosis, which potentially affects all individuals, especially pregnant women and immunocompromised persons. the present study investigated the prevalence, antimicrobial susceptibility and serotypes distribution of the isolated l. monocytogenes from iran. twenty two (4.97%) of 442 human, food and livestock samples were found to be positive for l. monocytogenes. l. monocytogenes was identified in 8.8% of 125 human samples, 2.99% of 267 fo ... | 2017 | 28445701 |
| survey for listeria monocytogenes in and on ready-to-eat foods from retail establishments in the united states (2010 through 2013): assessing potential changes of pathogen prevalence and levels in a decade. | a multiyear interagency listeria monocytogenes market basket survey was undertaken for selected refrigerated ready-to-eat foods purchased at retail in four foodnet sites in the united states. food samples from 16 food categories in six broad groups (seafood, produce, dairy, meat, eggs, and combination foods) were collected weekly at large national chain supermarkets and independent grocery stores in california, maryland, connecticut, and georgia for 100 weeks between december 2010 and march 2013 ... | 2017 | 28437165 |
| analysis of the listeria monocytogenes population structure among isolates from 1931 to 2015 in australia. | listeriosis remains among the most important bacterial illnesses, with a high associated mortality rate. efforts to control listeriosis require detailed knowledge of the epidemiology of the disease itself, and its etiological bacterium, listeria monocytogenes. in this study we provide an in-depth analysis of the epidemiology of 224 l. monocytogenes isolates from australian clinical and non-clinical sources. non-human sources included meat, dairy, seafood, fruit, and vegetables, along with animal ... | 2017 | 28428781 |
| draft genome sequences of three listeria monocytogenes isolates from foods in china. | listeria monocytogenes is a foodborne pathogen of global concern because of the high mortality rate among patients. the draft genome sequences of three l. monocytogenes strains isolated from foods are reported here. the availability of these genomes should provide useful information on the genomic diversity of l. monocytogenes isolated from foods in china. | 2017 | 28428307 |
| unique case report of a chromomycosis and listeria in soft tissue and cerebellar abscesses after kidney transplantation. | chromomycosis is a rare mycotic infection encountered in tropical and subtropical regions. the disease presents as a slowly-evolving nodule that can become infected with bacteria. here, we describe a unique association of abscesses caused by a chromomycosis and listeria monocytogenes in a kidney transplant recipient, and didactically expose how the appropriate diagnosis was reached. | 2017 | 28427354 |
| a comparative study of natural antimicrobial delivery systems for microbial safety and quality of fresh-cut lettuce. | nanoencapsulation can provide a means to effectively deliver antimicrobial compounds and enhance the safety of fresh produce. however, to date there are no studies which directly compares how different nanoencapsulation systems affect fresh produce safety and quality. this study compared the effects on quality and safety of fresh-cut lettuce treated with free and nanoencapsulated natural antimicrobial, cinnamon bark extract (cbe). a challenge study compared antimicrobial efficacy of 3 different ... | 2017 | 28425569 |
| listeria monocytogenes serotype 4b strains replicate in monocytes/macrophages more than the other serotypes. | we analyzed the pathogenicity of various serotypes of listeria monocytogenes using a balb/c mouse intravenous injection model. the survival rates of mice inoculated with strains ns1/2b (serotype 1/2b), ns3b (serotype 3b) and ns 4b (serotype 4b) were 60, 63.6 and 63.6%, respectively. although the survival rates were similar, the bacterial growth in the liver of ns3b-infected mice was 144.5-fold higher than that in the liver of ns4b-infected mice. histopathological analyses suggest that the ns4b s ... | 2017 | 28420823 |
| listeria monocytogenes meningitis in the netherlands, 1985-2014: a nationwide surveillance study. | listeria monocytogenes can cause sepsis and meningitis. we report national surveillance data on l. monocytogenes meningitis in the netherlands, describing incidence changes, genetic epidemiology and fatality rate. | 2017 | 28419853 |
| host pore-forming protein complex neutralizes the acidification of endocytic organelles to counteract intracellular pathogens. | many intracellular pathogens invade cells via endocytic organelles and have adapted to the drop in ph along the endocytic pathway. however, the strategy by which the host cell counteracts this pathogen adaptation remains unclear. βγ-cat is an aerolysin-like pore-forming protein and trefoil factor complex in the frog bombina maxima. we report here that βγ-cat, as a host-secreted factor with an intrinsic channel-forming property, is the first example of a molecule that actively neutralizes the aci ... | 2017 | 28419297 |
| comparative diagnostic efficacy of recombinant llo and pi-plc-based elisas for detection of listeriosis in animals. | the present study for the first time evaluates the serodiagnostic efficacy of two recombinant antigens namely, listeriolysin o (rllo) and phosphatidyl-inositol phospholipase c (rpi-plc). indirect elisa with the above recombinant antigens was used on samples collected from bovines (n=106), goats (n=138) and pigs (n=92) having either a history of abortion, emaciation and/or apparently healthy animals. isolation of listeria was attempted from the blood samples using usda-fsis method. on screening o ... | 2017 | 28411150 |
| screening of the two-component-system histidine kinases of listeria monocytogenes egd-e. lias is needed for growth under heat, acid, alkali, osmotic, ethanol and oxidative stresses. | to study the role of each two-component system (tcs) histidine kinase (hk) in stress tolerance of listeria monocytogenes egd-e, we monitored the growth of individual hk deletion mutant strains under heat (42.5 °c), acid (ph 5.6), alkali (ph 9.4), osmotic (6% nacl), ethanol (3.5 vol%), and oxidative (5 mm h2o2) stresses. the growth of δlias (δlmo1021) strain was impaired under each stress, with the most notable decrease under heat and osmotic stresses. the δvirs (δlmo1741) strain showed nearly co ... | 2017 | 28400017 |
| metabolic genetic screens reveal multidimensional regulation of virulence gene expression in listeria monocytogenes and an aminopeptidase that is critical for prfa protein activation. | listeria monocytogenes is an environmental saprophyte and intracellular bacterial pathogen. upon invading mammalian cells, the bacterium senses abrupt changes in its metabolic environment, which are rapidly transduced to regulation of virulence gene expression. to explore the relationship between l. monocytogenes metabolism and virulence, we monitored virulence gene expression dynamics across a library of genetic mutants grown under two metabolic conditions known to activate the virulent state: ... | 2017 | 28396325 |
| listeria monocytogenes meningitis complicating rotavirus gastroenteritis in an immunocompetent child. | listeria monocytogenes only occasionally causes bacterial meningitis in immunocompetent children. we report a case of l. monocytogenes meningitis associated with rotavirus gastroenteritis. the patient was a previously healthy 20-month-old girl who was admitted because of sustained fever and lethargy after suffering from gastroenteritis for 6 days. the patient's peripheral white blood cell count was 18,600/µl and the c-reactive protein level was 2.44 mg/dl. a stool sample tested positive for rota ... | 2017 | 28392538 |
| artisanal sonoran cheese (cocido cheese): an exploration of its production process, chemical composition and microbiological quality. | the objective of this study was to explore and document the production process of artisanal cocido cheese and to determine its chemical composition and microbiological quality, considering samples from six dairies and four retailers. | 2017 | 28295334 |
| chemical composition of mentha pulegium and rosmarinus officinalis essential oils and their antileishmanial, antibacterial and antioxidant activities. | the aim of the study was the determination of the chemical composition of mentha pulegium l. and rosmarinus officinalis l. essential oils and the evaluation of their antileishmanial, antibacterial and antioxidant activities. essential oils (eos) were isolated using steam distillation and the chemical composition was determined using gc-ms analysis. the antibacterial activity was tested against ten pathogenic strains using the diffusion method, the minimum inhibitory concentration (mic) and the m ... | 2017 | 28821401 |
| replication-transcription conflicts generate r-loops that orchestrate bacterial stress survival and pathogenesis. | replication-transcription collisions shape genomes, influence evolution, and promote genetic diseases. although unclear why, head-on transcription (lagging strand genes) is especially disruptive to replication and promotes genomic instability. here, we find that head-on collisions promote r-loop formation in bacillus subtilis. we show that pervasive r-loop formation at head-on collision regions completely blocks replication, elevates mutagenesis, and inhibits gene expression. accordingly, the ac ... | 2017 | 28802046 |
| probiotic characteristics of lactobacillus curvatus dn317, a strain isolated from chicken ceca. | the probiotic characteristics of lactobacillus curvatus dn317, a strain isolated from chicken ceca, were evaluated. this strain was selected for study from the isolated lactobacillus strains because it has specific anti-microbial activity against campylobacter jejuni atcc 33560, camp. jejuni nctc 11168, listeria monocytogenes atcc 7644, and bacillus subtilis atcc 8633. lact. curvatus dn317 showed an auto-aggregation percentage of 72% and presented the highest co-aggregation with lact. monocytoge ... | 2017 | 28741151 |
| bacteria tune interferon responses by playing with chromatin. | bacterial infections, like their viral counterparts, trigger the onset of innate immune defense mechanisms through the release of cytokines, including interferons (ifns). while type i and ii ifn responses to bacteria have long been explored, type iii ifn response remains poorly addressed. we have recently reported that the pathogen listeria monocytogenes triggers the expression of type i and iii ifn genes in epithelial cells, and is able to fine-tune downstream signaling at the chromatin level. ... | 2016 | 22286704 |
| unusual case of spondylodiscitis due to listeria monocytogenes. | 2016 | 28529845 | |
| in vitro antimicrobial activity screening of xylaria hypoxylon. | fungi have a potential of using both as nutritive and medicinal food stuff. because of containing several therapeutic agents, they are reported to be used for hundreds of years to treat several diseases caused by bacteria, fungi, viruses and parasites. the aim of this study is to determine the in vitro antimicrobial activity of xylaria hypoxylon, which were collected from yomra, trabzon, turkey. | 2016 | 28852719 |
| thermal inactivation kinetics of surface contaminating listeria monocytogenes on vacuum-packaged agar surface and ready-to-eat sliced ham and sausage. | the aim of this work was to study thermal inactivation kinetics of listeria monocytogenes on vacuum-packaged food surfaces. the kinetics were first determined on model agar systems (bhi agar plates), mimicking cooked meat products, which have the same characteristics (ph, sodium chloride (nacl) or sodium lactate (nal) content and thickness) as the cooked meat products. then, in order to validate how well the thermal inactivation on the model agar system simulated inactivation on real products, i ... | 2016 | 28460987 |
| influence of processing parameters and stress adaptation on the inactivation of listeria monocytogenes by non-thermal atmospheric plasma (ntap). | this study evaluated the effectiveness of non-thermal atmospheric plasma (ntap) treatments against listeria. firstly, the impact of gas composition and flow rate on l. monocytogenes and l. innocua (used as a surrogate) inactivation by ntap was monitored. secondly, the influence of stress adaptation (growth under suboptimal conditions, using a wide range of temperatures and media acidified up to ph5.5 with citric, lactic, malic or hydrochloric acid, or short-term exposure to acid, cold or thermal ... | 2016 | 28460960 |
| a piezoelectric immunosensor for specific capture and enrichment of viable pathogens by quartz crystal microbalance sensor, followed by detection with antibody-functionalized gold nanoparticles. | a sensitive bacteria enrichment and detection system for viable escherichia coli o157:h7 was developed using a piezoelectric biosensor-quartz crystal microbalance (qcm) with antibody-functionalized gold nanoparticles (aunps) used as detection verifiers and amplifiers. in the circulating-flow qcm system, capture antibodies for e. coli o157:h7 were first immobilized onto the qcm chip. the sample containing e. coli o157:h7 was circulated through the system in the presence of 10 ml of brain heart in ... | 2016 | 22683250 |
| acute cholecystitis with listeria monocytogenes. | listeriosis, an opportunistic food-borne disease caused by listeria monocytogenes, is infrequent and occurs preferentially in patients at the extremes of age, during pregnancy or in immunocompromised hosts. most common manifestations are maternofoetal and neonatal infections, severe invasive presentations such as bacteraemia with or without central nervous system symptoms occuring preferentially in immunosuppressed patients and self-limited gastro-enteritis affecting healthy individuals. excepti ... | 2016 | 23019807 |
| [incidence study of listeriosis in spain]. | we performed a descriptive retrospective study of cases of listeriosis occurring in spain from 2001 to 2007 to determine the burden and trend of this disease in our setting. several sources of information were used. epidemiological information was collected from 1.242 cases of listeriosis, representing a mean incidence rate of 0,56 cases per 100.000 inhabitants per year, which was extrapolated as an overall estimate for spain. the annual incidence showed a statistically significant increasing tr ... | 2016 | 23759185 |
| pulsed light treatment of different food types with a special focus on meat: a critical review. | today, the increasing demand for minimally processed foods that are at the same moment nutritious, organoleptically satisfactory, and free from microbial hazards challenges the research and development to establish alternative methods to reduce the level of bacterial contamination. as one of the recent emerging nonthermal methods, pulsed light (pl) constitutes a technology for the fast, mild, and residue-free surface decontamination of food and food contact materials in the processing environmen ... | 2016 | 25575192 |
| the roles of noncoding rna rli60 in regulating the virulence of listeria monocytogenes. | listeria monocytogenes (lm) is an important zoonotic foodborne pathogen. noncoding rna (ncrna) has an important role in regulating its virulence. as a member of ncrna, however, the function of rli60 in regulating lm virulence remain unclear. the aim of this study was to investigate the role of rli60 in regulating lm virulence. | 2016 | 25442865 |
| antimicrobial properties of magnesium chloride at low ph in the presence of anionic bases. | magnesium is an element essential for life and is found ubiquitously in all organisms. the different cations play important roles as enzymatic co-factors, as signaling molecules, and in stabilizing cellular components. it is not surprising that magnesium salts in microbiological experiments are typically associated with positive effects. in this study with listeria monocytogenes as a model organism, we focus however on the usefulness of magnesium (in form of mgcl2) as a stress enhancer. whereas ... | 2016 | 25252874 |
| listeria monocytogenes meningoencephalitis during the treatment with rituximab and mycophenolate mofetil in a patient with pediatric-onset systemic lupus erythematosus. | 2016 | 25150501 | |
| nisin as a food preservative: part 1: physicochemical properties, antimicrobial activity, and main uses. | nisin is a natural preservative for many food products. this bacteriocin is mainly used in dairy and meat products. nisin inhibits pathogenic food borne bacteria such as listeria monocytogenes and many other gram-positive food spoilage microorganisms. nisin can be used alone or in combination with other preservatives or also with several physical treatments. this paper reviews physicochemical and biological properties of nisin, the main factors affecting its antimicrobial effectiveness, and its ... | 2016 | 25675115 |
| combined effect of a nanoemulsion of d-limonene and nisin on listeria monocytogenes growth and viability in culture media and foods. | the present work evaluated the antibacterial effect of nanoemulsions from natural compounds d-limonene and nisin against listeria monocytogenes in tryptic soy broth growth medium, chicken broth, and vegetable cream. experiments were performed by means of optical density growth curves and studies of viability in culture media and foods. stability of nanoemulsions was evaluated by a mastersizer 2000 equipment. results showed greater effectiveness when applying d-limonene in form of nanoemulsion th ... | 2016 | 25788168 |
| combined effect of ultrasound and essential oils to reduce listeria monocytogenes on fresh produce. | salads prepared from contaminated fresh produce have a high risk of causing food-borne illnesses. essential oils obtained from plants have antimicrobial activity and may provide a natural approach to reduce the pathogens on fresh produce. additionally, ultrasound treatments have been shown to reduce the microbial counts on different foods. the objective of this study was to investigate the antimicrobial activities of cinnamon and lemon essential oils in vitro and in food applications. mixtures o ... | 2016 | 26377335 |
| listeria meningitis complicating a patient with ulcerative colitis on concomitant infliximab and hydrocortisone. | infliximab, a monoclonal antibody directed against tumour necrosis factor, is an effective therapy for moderate-to-severe ulcerative colitis and crohn's disease. uncommonly, serious opportunistic infections have occurred in patients after infliximab administration. here, we describe meningitis caused by listeria monocytogenes developing in a 37-year-old man with ulcerative colitis refractory to intravenous corticosteroids 10 days after receiving his first infusion of infliximab. with the increas ... | 2016 | 26358724 |
| development of a convenience and safety chilled sous vide fish dish: diversification of aquacultural products. | the dynamic expansion of the ready-to-eat seabream sector in its adaptation to new lifestyles has led to the search for new presentation formats in seabream (sparus aurata). green sauce (olive oil, wine vinegar, garlic, fresh parsley, black pepper, basil and salt) and 60 ℃ of cooking temperature were chosen by the panellists for the sous vide cooking process. seabream fillet and sauce were packaged in polypropylene trays, cooked, chilled and stored at 2 ℃. microbiological (total viable counts,en ... | 2016 | 25941212 |
| antibiotic susceptibility of listeria monocytogenes in argentina. | listeria monocytogenes is the causative agent of listeriosis, a food-borne disease that mainly affects pregnant women, the elderly, and immunocompromised patients. the primary treatment of choice of listeriosis is the combination of ampicillin or penicillin g, with an aminoglycoside, classically gentamicin. the second-choice therapy for patients allergic to β-lactams is the combination of trimethoprim with a sulfonamide (such as co-trimoxazole). the aim of this study was to analyze the antimicro ... | 2016 | 25976753 |
| atlas(®) listeria monocytogenes lmg2 detection assay using transcription mediated amplification to detect listeria monocytogenes in selected foods and stainless steel surface. | the atlas listeria monocytogenes lmg2 detection assay, developed by roka bioscience inc., was compared to a reference culture method for seven food types (hot dogs, cured ham, deli turkey, chicken salad, vanilla ice cream, frozen chocolate cream pie, and frozen cheese pizza) and one surface (stainless steel, grade 316). a 125 g portion of deli turkey was tested using a 1:4 food:media dilution ratio, and a 25 g portion for all other foods was tested using 1:9 food:media dilution ratio. the enrich ... | 2016 | 25902984 |
| multistate outbreak of listeriosis caused by imported cheese and evidence of cross-contamination of other cheeses, usa, 2012. | listeria monocytogenes is a foodborne pathogen that can cause bacteraemia, meningitis, and complications during pregnancy. in july 2012, molecular subtyping identified indistinguishable l. monocytogenes isolates from six patients and two samples of different cut and repackaged cheeses. a multistate outbreak investigation was initiated. initial analyses identified an association between eating soft cheese and outbreak-related illness (odds ratio 17·3, 95% confidence interval 2·0-825·7) but no com ... | 2016 | 26122394 |
| prevalence and virulence characterization of listeria monocytogenes in chilled pork in zhejiang province, china. | listeria monocytogenes is an important foodborne pathogen that can grow in refrigeration temperature and causes severe human infections. the aims of this work were to estimate the prevalence of l. monocytogenes in chilled pork in zhejiang, china and to examine the virulence features of the isolates. of 331 meat samples, 196 were positive for listeria spp., with l. innocua accounting for 54.4%, l. monocytogenes for 11.5%, and l. welshimeri for 4.2%. the most prevalent l. monocytogenes serotype wa ... | 2016 | 26393675 |
| an unusual presentation of paediatric listeria meningitis with selective spinal grey matter involvement and acute demyelinating polyneuropathy. | paediatric listeria meningitis is rare, especially in immuno-competent children, but associated with significant mortality and morbidity and frequent complications. | 2016 | 26371981 |
| multisystemic listeriosis in a common brushtail possum (trichosurus vulpecula) and two common ringtail possums (pseudocheirus peregrinus). | a single free-ranging common brushtail possum (trichosurus vulpecula) and 2 captive sibling common ringtail possums (pseudocheirus peregrinus)from a zoological facility in sydney, australia, were diagnosed with multisystemic listeriosis. the brushtail was found dead in an animal enclosure while the ringtails presented with signs of cardiovascular collapse and died shortly thereafter. all 3 animals were culture positive forlisteria monocytogenesand demonstrated focal suppurative lesions within th ... | 2016 | 26215760 |
| ankle arthritis and nail clubbing as a form of presentation of listeria monocytogenes endocarditis. | 2016 | 26190205 | |
| fisetin protects against listeria monocytogenes infection by reducing the production of listeriolysin o. | 2016 | 26347572 | |
| identification and characterization of species-specific nanobodies for the detection of listeria monocytogenes in milk. | listeria monocytogenes (lm), one of the eight species belonging to the genus listeria, is pathogenic for both humans and animals. in this study, two novel lm-specific clones, designated l5-78 and l5-79, were isolated from a phage display antibody library that was derived from the variable domain of heavy-chain antibodies (vhhs) of non-immunized alpaca. these two clones were expressed, purified, and characterized. results showed that both isolated vhhs recognize three serotypes (1/2a, 1/2b, and 4 ... | 2016 | 26456330 |
| macrophages mediate flagellin induced inflammasome activation and host defense in zebrafish. | the inflammasome is an innate immune complex whose rapid inflammatory outputs play a critical role in controlling infection; however, the host cells that mediate inflammasome responses in vivo are not well defined. using zebrafish larvae, we examined the cellular immune responses to inflammasome activation during infection. we compared the host responses with two listeria monocytogenes strains: wild type and lm-pyro, a strain engineered to activate the inflammasome via ectopic expression of flag ... | 2016 | 26468080 |
| comparative genomic analysis reveals that the 20k and 38k prophages in listeria monocytogenes serovar 4a strains lm850658 and m7 contribute to genetic diversity but not to virulence. | listeria monocytogenes is a foodborne pathogen of considerable genetic diversity with varying pathogenicity. initially, we found that the strain m7 was far less pathogenic than the strain lm850658 though both are serovar 4a strains belonging to the lineage iii. comparative genomic approaches were then attempted to decipher the genetic basis that might govern the strain-dependent pathotypes. there are 2,761 coding sequences of 100% nucleotide identity between the two strains, accounting for 95.7% ... | 2016 | 26464378 |
| [the stimulating effect of exometabolites of the marine microalgae phaeodactylum tricornutum bohlin on reproduction of listeria monocytogenes]. | the biological activity of ethyl acetate extract of exometabolites from the marine microalgae phaeodactylum tricornutum against a test culture of listeria monocytogenes 4b has been investigated. it was shown that the stimulating effect of algal exometabolites on the growth of pathogenic bacteria increased maximally by 98.3% on day 6 of the cultivation, if the active substances comprising the culture liquid of p. tricornutum were separated by successive extractions with solvents in order of incre ... | 2016 | 26415278 |
| natural antimicrobials and high-pressure treatments on the inactivation of salmonella enteritidis and escherichia coli o157:h7 in cold-smoked salmon. | high hydrostatic pressure (hhp) combined with reuterin and lactoperoxidase system (lps) has exerted antimicrobial activity against listeria monocytogenes in cold-smoked salmon at chilled temperatures. therefore the purpose of this work was to evaluate the effect of hhp combined with reuterin, lps and lactoferrin (lf) on the survival of salmonella enterica subsp. enterica serovar enteritidis and escherichia coli o157:h7 in cold-smoked salmon stored at 4 and 10 °c. | 2016 | 26268416 |