| spectroscopic studies of the eutt adenosyltransferase from salmonella enterica: mechanism of four-coordinate co(ii)cbl formation. | eutt from salmonella enterica is a member of a class of enzymes termed atp:co(i)rrinoid adenosyltransferases (acats), implicated in the biosynthesis of adenosylcobalamin (adocbl). in the presence of cosubstrate atp, acats raise the co(ii)/co(i) reduction potential of their cob(ii)alamin [co(ii)cbl] substrate by >250 mv via the formation of a unique four-coordinate (4c) co(ii)cbl species, thereby facilitating the formation of a "supernucleophilic" cob(i)alamin intermediate required for the format ... | 2016 | 26886077 |
| high-efficiency, two-step scarless-markerless genome genetic modification in salmonella enterica. | we present a two-step method for scarless-markerless genome genetic modification in salmonella enterica based on the improved suicide plasmid pgmb152. the whole laczya gene can provide a lacz-based blue/white screening strategy for fast selection of double-crossover mutants by allelic exchange. the high efficiency of this genetic engineering strategy permits the study of gene function by gene knockin, site-directed mutagenesis, and gene knockout to construct live attenuated vaccines. | 2016 | 26883127 |
| compensating the fitness costs of synonymous mutations. | synonymous mutations do not change the sequence of the polypeptide but they may still influence fitness. we investigated in salmonella enterica how four synonymous mutations in the rpst gene (encoding ribosomal protein s20) reduce fitness (i.e., growth rate) and the mechanisms by which this cost can be genetically compensated. the reduced growth rates of the synonymous mutants were correlated with reduced levels of the rpst transcript and s20 protein. in an adaptive evolution experiment, these f ... | 2016 | 26882986 |
| phenotypic and genotypic characterization of animal-source salmonella heidelberg isolates. | salmonella enterica serotype heidelberg (s. heidelberg) is frequently implicated in human foodborne salmonella infections and often produces more severe clinical disease than other serotypes. livestock and poultry products represent a potential risk for transmission to humans. the purpose of this study was to evaluate 49 s. heidelberg veterinary isolates for exponential growth rate (egr), pfge pattern, and antimicrobial resistance to evaluate these parameters as mechanisms by which s. heidelberg ... | 2016 | 26881274 |
| antimicrobial resistance of enteric salmonella in bangui, central african republic. | introduction. the number of salmonella isolated from clinical samples that are resistant to multiple antibiotics has increased worldwide. the aim of this study was to determine the prevalence of resistant salmonella enterica isolated in bangui. methods. all enteric salmonella strains isolated from patients in 2008 were identified and serotyped, and the phenotypes of resistance were determined by using the disk diffusion method. nine resistance-associated genes, bla tem , bla oxa , bla shv , teta ... | 2015 | 26880999 |
| the horizontally-acquired response regulator ssrb drives a salmonella lifestyle switch by relieving biofilm silencing. | a common strategy by which bacterial pathogens reside in humans is by shifting from a virulent lifestyle, (systemic infection), to a dormant carrier state. two major serovars of salmonella enterica, typhi and typhimurium, have evolved a two-component regulatory system to exist inside salmonella-containing vacuoles in the macrophage, as well as to persist as asymptomatic biofilms in the gallbladder. here we present evidence that ssrb, a transcriptional regulator encoded on the spi-2 pathogenicity ... | 2016 | 26880544 |
| a critical role of bacterioferritin in salmonella pullorum-induced ifn-β expression in df-1 cells. | salmonella enterica serovar pullorum (s. pullorum) causes pullorum disease in poultry and results in great economic losses to the poultry industry. although an eradication program has been successfully performed in some countries, it remains a major threat to countries with poor poultry disease surveillance. currently there are no effective control measures for pullorum disease except eradication. in particular, the pathogenesis of s. pullorum infection is still largely unknown. here we identifi ... | 2016 | 26870001 |
| dissemination of salmonella enterica sequence types among asean economic community countries. | food-borne illness caused by salmonella enterica remains a public health problem and results in economic loss worldwide. with the up-coming establish- ment of the asean economic community (aec) allowing unrestricted move- ment of labor and goods, there is a higher risk of pathogen transmission among the aec countries. this study characterized and investigated the spatial and temporal associations of s. enterica strains isolated in aec countries during 1940- 2012 compared with those isolated in n ... | 2015 | 26867391 |
| host stress drives salmonella recrudescence. | host stress is well known to result in flare-ups of many bacterial, viral and parasitic infections. the mechanism by which host stress is exploited to increase pathogen loads, is poorly understood. here we show that salmonella enterica subspecies enterica serovar typhimurium employs a dedicated mechanism, driven by the scsa gene, to respond to the host stress hormone cortisol. through this mechanism, cortisol increases salmonella proliferation inside macrophages, resulting in increased intestina ... | 2016 | 26857846 |
| differences in host cell invasion and salmonella pathogenicity island 1 expression between salmonella enterica serovar paratyphi a and nontyphoidal s. typhimurium. | active invasion into nonphagocytic host cells is central to salmonella enterica pathogenicity and dependent on multiple genes within salmonella pathogenicity island 1 (spi-1). here, we explored the invasion phenotype and the expression of spi-1 in the typhoidal serovars paratyphi a compared to that of the nontyphoidal serovars typhimurium. we demonstrate that while s. typhimurium is equally invasive under both aerobic and microaerobic conditions, s. paratyphi a invades only following growth unde ... | 2016 | 26857569 |
| correction: genomic comparison of non-typhoidal salmonella enterica serovars typhimurium, enteritidis, heidelberg, hadar and kentucky isolates from broiler chickens. | | 2016 | 26854571 |
| salmonella vaccination in pigs: a review. | the control of salmonella enterica in pig production is necessary for both public and animal health. the persistent and frequently asymptomatic nature of porcine salmonella infection and the organism's abilities to colonize other animal species and to survive in the environment mean that effective control generally requires multiple measures. vaccination is one such measure, and the present review considers its role and its future, drawing on studies in pigs from the 1950s to the present day. on ... | 2017 | 26853216 |
| differentiation of uk endemic strains of salmonella enterica serovar newport from epidemic north american strains by pcr detection of a truncated bapa chromosomal gene. | the aim of this study was to develop a pcr test to detect chromosomal differences between epidemic multidrug resistant (epi-mdr) strains of salmonella enterica serovar newport (s. newport) and non-epi-mdr strains of s. newport that are endemic to the united kingdom (uk). sequence analysis of the biofilm-associated protein a gene (bapa) showed that epi-mdr strains of s. newport from the united states of america (usa) had a deletion of 309 bp, which was not present in non-epi-mdr strains of s. new ... | 2016 | 26850548 |
| complete closed genome sequences of salmonella enterica subsp. enterica serotypes anatum, montevideo, typhimurium, and newport, isolated from beef, cattle, and humans. | salmonella enterica spp. are a diverse group of bacteria with a wide range of virulence potential. to facilitate genome comparisons across this virulence spectrum, we present eight complete closed genome sequences of four s. enterica serotypes (anatum, montevideo, typhimurium, and newport), isolated from various cattle samples and from humans. | 2016 | 26847891 |
| population structure and associated phenotypes of salmonella enterica serovars derby and mbandaka overlap with host range. | the salmonella enterica serovar derby is frequently isolated from pigs and turkeys whereas serovar mbandaka is frequently isolated from cattle, chickens and animal feed in the uk. through comparative genomics, phenomics and mutant construction we previously suggested possible mechanistic reasons why these serovars demonstrate apparently distinct host ranges. here, we investigate the genetic and phenotypic diversity of these two serovars in the uk. we produce a phylogenetic reconstruction and per ... | 2016 | 26846255 |
| suppurative granulomatous cholecystitis in a pediatric chronic carrier with salmonella enterica serotype typhi: a case report and review of literature. | bacterial infection of salmonella enterica serotype typhi is rare in the united states but endemic in many developing countries. approximately 3-5% of patients become chronic asymptomatic carriers. we describe an atypical presentation of s. enterica serotype typhi infection in a 10-year-old male, whose cholecystechtomy and bile culture revealed chronic carrier status despite negative stool tests and the absence of gallstones. the gallbladder showed marked thickening of the wall with an intense s ... | 2016 | 26838767 |
| attribution of salmonella enterica serotype hadar infections using antimicrobial resistance data from two points in the food supply system. | a challenge to the development of foodborne illness prevention measures is determining the sources of enteric illness. microbial subtyping source-attribution models attribute illnesses to various sources, requiring data characterizing bacterial isolate subtypes collected from human and food sources. we evaluated the use of antimicrobial resistance data on isolates of salmonella enterica serotype hadar, collected from ill humans, food animals, and from retail meats, in two microbial subtyping att ... | 2016 | 26838291 |
| high prevalence of typhoidal salmonella enterica serovars excreting food handlers in karachi-pakistan: a probable factor for regional typhoid endemicity. | typhoid fever is the persistent cause of morbidity worldwide. salmonella enterica serovar's carriers among food handlers have the potential to disseminate this infection on large scale in the community. the purpose of this study was to determine the prevalence of typhoidal s. enterica serovars among food handlers of karachi. | 2015 | 26825058 |
| highly drug-resistant salmonella enterica serovar indiana clinical isolates recovered from broilers and poultry workers with diarrhea in china. | highly drug-resistant salmonella enterica serovar indiana became the most common serovar in broilers with diarrhea in china over the course of this study (15% in 2010 to 70% in 2014). while most s. indiana isolates (87%, 384/440) were resistant to 13 to 16 of the 16 antibiotics tested, 89% of non-s. indiana isolates (528/595) were resistant to 0 to 6 antibiotics. class 1 integrons and inchi2-type plasmids were detected in all s. indiana isolates, but only in 39% and 1% of non-s. indiana isolates ... | 2016 | 26824960 |
| complete genome sequence and methylome of salmonella enterica subsp. enterica cerro, a frequent dairy cow serovar. | salmonella enterica subsp. enterica serovar cerro is an infrequent pathogen of humans and other mammals but is frequently isolated from the hindgut of asymptomatic cattle in the united states. to further understand the genomic determinants of s. cerro specificity for the bovine hindgut, the genome of isolate cfsan001588 was fully sequenced and deposited in the genbank database. | 2016 | 26823571 |
| recombinant plasmid-based quantitative real-time pcr analysis of salmonella enterica serotypes and its application to milk samples. | the aim of the current study was to develop, a new, rapid, sensitive and quantitative salmonella detection method using a real-time pcr technique based on an inexpensive, easy to produce, convenient and standardized recombinant plasmid positive control. to achieve this, two recombinant plasmids were constructed as reference molecules by cloning the two most commonly used salmonella-specific target gene regions, inva and ttrrsbc. the more rapid detection enabled by the developed method (21 h) com ... | 2016 | 26820062 |
| prevalence of nontyphoidal salmonella and salmonella strains with conjugative antimicrobial-resistant serovars contaminating animal feed in texas. | the objective of this study was to characterize 365 nontyphoidal salmonella enterica isolates from animal feed. among the 365 isolates, 78 serovars were identified. twenty-four isolates (7.0%) were recovered from three of six medicated feed types. three of these isolates derived from the medicated feed, salmonella newport, salmonella typhimurium var. o 5- (copenhagen), and salmonella lexington var. 15+ (manila), displayed antimicrobial resistance. susceptibility testing revealed that only 3.0% ( ... | 2016 | 26818979 |
| interaction of a live attenuated salmonella gallinarum vaccine candidate with chicken bone marrow-derived dendritic cells. | salmonella enterica serovar gallinarum (sg) is a gram-negative intracellular host-adapted pathogen that causes fowl typhoid. attenuated strains of sg are proven and widely used vaccine candidates because of advantages like induction of strong humoral and cell-mediated immune responses. in the present study, we investigated the interaction of chicken bone marrow-derived dendritic cells (chbm-dcs) with an attenuated sg (jol1355) strain that secretes a heat-labile enterotoxin b subunit protein prev ... | 2016 | 26813292 |
| selection and electrophoretic characterization of salmonella enterica subsp. enterica biocide variants resistant to antibiotics. | the proposed research outlines a serious common concern of salmonella resistance to antimicrobials following prolonged exposure to the disinfectants (biocides). these phenotypes of bacteria could potentially result in hard to treat infections. typical for avian sources, biocide sensitive s. enterica subsp. enterica serovars: typhimurium, enteritidis, virchow and zanzibar and their isogenic biocide-tolerant variants were studied in order to investigate bacteriostatic effect of two commercially av ... | 2015 | 26812813 |
| gatifloxacin versus ceftriaxone for uncomplicated enteric fever in nepal: an open-label, two-centre, randomised controlled trial. | because treatment with third-generation cephalosporins is associated with slow clinical improvement and high relapse burden for enteric fever, whereas the fluoroquinolone gatifloxacin is associated with rapid fever clearance and low relapse burden, we postulated that gatifloxacin would be superior to the cephalosporin ceftriaxone in treating enteric fever. | 2016 | 26809813 |
| core proteomic analysis of unique metabolic pathways of salmonella enterica for the identification of potential drug targets. | infections caused by salmonella enterica, a gram-negative facultative anaerobic bacteria belonging to the family of enterobacteriaceae, are major threats to the health of humans and animals. the recent availability of complete genome data of pathogenic strains of the s. enterica gives new avenues for the identification of drug targets and drug candidates. we have used the genomic and metabolic pathway data to identify pathways and proteins essential to the pathogen and absent from the host. | 2016 | 26799565 |
| complete genome sequences of salmonella enterica serovars anatum and anatum var. 15+, isolated from retail ground turkey. | the complete genome sequences of two isolates of salmonella enterica serovars anatum and anatum var. 15+ revealed the presence of two plasmids of 112 kb and 3 kb in size in each. the chromosome of salmonella anatum (4.83 mb) was slightly smaller than that of salmonella anatum var. 15+ (4.88 mb). | 2016 | 26798111 |
| whole-genome sequencing of salmonella enterica subsp. enterica serovar ouakam isolated from ground turkey. | in this report, we announce the first whole-genome sequencing of salmonella enterica subsp. enterica serovar ouakam strain gnt-01, isolated from ground turkey retail meat. the strain has a chromosome of 5,088,451 bp long, with a g+c content of 52.3%, and a plasmid of 109,715 bp. | 2016 | 26798110 |
| complete genome and methylome sequences of two salmonella enterica spp. | salmonella enterica is responsible for major foodborne outbreaks worldwide. it can cause gastroenteritis characterized by diarrhea, vomiting, and fever. salmonella infections raise public health concerns along with consequential economic impacts. in this report, we announce the first complete genome sequences of salmonella enterica subsp. enterica serovar choleraeuis (s. choleraeuis) atcc 10708 and salmonella enterica subsp. enterica serovar pullorum (s. pullorum) atcc 9120, isolated from patien ... | 2016 | 26798102 |
| draft genome sequences of two salmonella enterica serotype infantis strains isolated from a captive western lowland gorilla (gorilla gorilla gorilla) and a cohabitant black and white tegu (tupinambis merianae) in brazil. | the draft genome sequences of two salmonella enterica serotype infantis isolates are reported here. one of the strains was isolated from a western lowland gorilla (gorilla gorilla gorilla) with colitis. the second strain was isolated from a reptile that inhabited the same premises. whole-genome sequencing demonstrated that these isolates were not clonal. | 2016 | 26798099 |
| comparative evaluation of the mutagenicity and genotoxicity of smoke condensate derived from korean cigarettes. | cigarette smoking is associated with carcinogenesis owing to the mutagenic and genotoxic effects of cigarette smoke. the aim of this study was to evaluate the mutagenic and genotoxic effects of korean cigarettes using in vitro assays. | 2015 | 26796893 |
| massive gastrointestinal hemorrhage secondary to typhoid colitis: a case report and literature review. | we present a case of massive lower gastrointestinal hemorrhage secondary to salmonella enterica subtype typhi (s. typhi) colitis, in a 29 year-old female treated for s. typhi bacteremia. one week post-treatment, she unexpectedly developed a large volume of rectal bleeding. endoscopy showed colonic ulcers and ileitis, but no endoscopic hemostasis was required. treatment was supportive with transfusions and a prolonged course of antimicrobials, with the bleeding stopping spontaneously. this case i ... | 2015 | 26793465 |
| sos system induction inhibits the assembly of chemoreceptor signaling clusters in salmonella enterica. | swarming, a flagellar-driven multicellular form of motility, is associated with bacterial virulence and increased antibiotic resistance. in this work we demonstrate that activation of the sos response reversibly inhibits swarming motility by preventing the assembly of chemoreceptor-signaling polar arrays. we also show that an increase in the concentration of the reca protein, generated by sos system activation, rather than another function of this genetic network impairs chemoreceptor polar clus ... | 2016 | 26784887 |
| production of recombinant salmonella flagellar protein, flgk, and its uses in detection of anti-salmonella antibodies in chickens by automated capillary immunoassay. | conventional immunoblot assays are a useful tool for specific protein identification, but tedious, labor-intensive and time-consuming. a capillary electrophoresis-based immunoblot assay so-called "simple western" was developed to enable the protein identification in an automatic manner. this communication describes the use of simple western for detecting anti-salmonella flgk antibodies from chicken sera. | 2016 | 26784737 |
| salmonella enterica typhimurium fljba operon stability: implications regarding the origin of salmonella enterica i 4,[5],12:i:. | salmonella enterica subsp enterica serovar 4,5,12:i:- has been responsible for many recent salmonella outbreaks worldwide. several studies indicate that this serovar originated from s. enterica subsp enterica serovar typhimurium, by the loss of the flagellar phase ii gene (fljb) and adjacent sequences. however, at least two different clones of s. enterica 4,5,12:i:- exist that differs in the molecular events responsible for fljb deletion. the aim of this study was to test the stability of the fl ... | 2015 | 26782556 |
| comparison of immunomodulatory properties of mannose-binding lectins from canavalia brasiliensis and cratylia argentea in a mice model of salmonella infection. | the immunomodulatory properties of mannose-binding lectins conbr (canavalia brasiliensis) and cfl (cratylia argentea) were investigated comparatively in a model of salmonella infection. the lectins were intraperitoneally (i.p.) administered to mice daily for three days before the bacterial challenge with salmonella enterica ser. typhimurium (0.2 ml i.p.; 10(7) cfu/ml). in vivo assays have shown that both lectins induced a significant leukocyte infiltration into the peritoneal cavity of uninfecte ... | 2016 | 26773770 |
| complete genome and plasmid sequences of three canadian isolates of salmonella enterica subsp. enterica serovar heidelberg from human and food sources. | isolates of salmonella enterica subsp. enterica serovar heidelberg are often associated with poultry products and may cause severe human illness. here, we report the fully assembled genome and plasmid sequences of three s. heidelberg strains with phage types 9, 29, and 41. | 2016 | 26769926 |
| type-iii secretion filaments as scaffolds for inorganic nanostructures. | nanostructured materials exhibit unique magnetic, electrical and catalytic properties. these characteristics are determined by the chemical composition, size and shape of the nanostructured components, which are challenging to modulate on such small size scales and to interface with living cells. to address this problem, we are using a self-assembling filament protein, prgi, as a scaffold for bottom-up inorganic nanostructure synthesis. prgi is a small protein (80 amino acids) that oligomerizes ... | 2016 | 26763334 |
| molecular epidemiology of monophasic salmonella enterica serovar o7: -: 1, 5 isolates in akita prefecture, japan. | | 2016 | 26743153 |
| differential killing of salmonella enterica serovar typhi by antibodies targeting vi and lipopolysaccharide o:9 antigen. | salmonella enterica serovar typhi expresses a capsule of vi polysaccharide, while most salmonella serovars, including s. enteritidis and s. typhimurium, do not. both s. typhi and s. enteritidis express the lipopolysaccharide o:9 antigen, yet there is little evidence of cross-protection from anti-o:9 antibodies. vaccines based on vi polysaccharide have efficacy against typhoid fever, indicating that antibodies against vi confer protection. here we investigate the role of vi capsule and antibodies ... | 2016 | 26741681 |
| persistent infections by nontyphoidal salmonella in humans: epidemiology and genetics. | although chronic infections by typhoidal salmonella are well-known, prolonged human infections by nontyphoidal salmonella (nts) are poorly characterized. | 2016 | 26740515 |
| development and evaluation of an elime assay to reveal the presence of salmonella in irrigation water: comparison with real-time pcr and the standard culture method. | a reliable, low-cost and easy-to-use elime (enzyme-linked-immuno-magnetic-electrochemical) assay for detection of salmonella enterica in irrigation water is presented. magnetic beads (mbs), coupled to a strip of eight-magnetized screen-printed electrodes localized at the bottom of eight wells (8-well/spe strip), effectively supported a sandwich immunological chain. enzymatic by-product is quickly measured by chronoamperometry, using a portable instrument. with the goal of developing a method abl ... | 2016 | 26717832 |
| on the use of the electrospinning coating technique to produce antimicrobial polyhydroxyalkanoate materials containing in situ-stabilized silver nanoparticles. | electro-hydrodynamic processing, comprising electrospraying and electrospinning techniques, has emerged as a versatile technology to produce nanostructured fiber-based and particle-based materials. in this work, an antimicrobial active multilayer system comprising a commercial polyhydroxyalkanoate substrate (pha) and an electrospun pha coating containing in situ-stabilized silver nanoparticles (agnps) was successfully developed and characterized in terms of morphology, thermal, mechanical, and b ... | 2016 | 28336838 |
| emergence of a clonal lineage of multidrug-resistant esbl-producing salmonella infantis transmitted from broilers and broiler meat to humans in italy between 2011 and 2014. | we report the spread of a clone of multidrug-resistant (mdr), esbl-producing (blactx-m-1) salmonella enterica subsp. enterica serovar infantis, in the italian broiler chicken industry and along the food-chain. this was first detected in italy in 2011 and led to human infection in italy in 2013-2014.a set (n = 49) of extended-spectrum cephalosporin (esc)-resistant (r) isolates of s. infantis (2011-2014) from humans, food-producing animals and meat thereof, were studied along with a selected set o ... | 2015 | 26716443 |
| complex regulation of the sirtuin-dependent reversible lysine acetylation system of salmonella enterica. | the extensive involvement of the reversible lysine acylation (rla) system in metabolism has attracted the attention of investigators interested in understanding the fundamentals of prokaryotic and eukaryotic cell function. research in this area of cell physiology is diverse, ranging from probing the molecular bases of human diseases, to optimizing engineered metabolic pathways for biotechnological applications, to advancing our understanding of fundamental cellular processes, among others. a gap ... | 2015 | 26705535 |
| salmonella enterica infections in the united states and assessment of coefficients of variation: a novel approach to identify epidemiologic characteristics of individual serotypes, 1996-2011. | despite control efforts, salmonellosis continues to cause an estimated 1.2 million infections in the united states (us) annually. we describe the incidence of salmonellosis in the us and introduce a novel approach to examine the epidemiologic similarities and differences of individual serotypes. | 2015 | 26701276 |
| putative alternative polyadenylation (apa) events in the early interaction of salmonella enterica typhimurium and human host cells. | the immune response of epithelial cells upon infection is mediated by changing activity levels of a variety of proteins along with changes in mrna, and also ncrna abundance. alternative polyadenylation (apa) represents a mechanism that diversifies gene expression similar to alternative splicing. t-cell activation, neuronal activity, development and several human diseases including viral infections involve apa, but at present it remains unclear if this mechanism is also implicated in the response ... | 2015 | 26697380 |
| classification of salmonella enterica serotypes with selective bands using visible/nir hyperspectral microscope images. | optical detection of foodborne bacteria such as salmonella classifies bacteria by analysing spectral data, and has potential for rapid detection. in this experiment hyperspectral microscopy is explored as a means for classifying five salmonella serotypes. initially, the microscope collects 89 spectral measurements between 450 and 800 nm. here, the objective was to develop correct classification of five serotypes with optimal spectral bands selected through multivariate data analysis (mvda), thus ... | 2016 | 26695128 |
| oxyr-dependent formation of dna methylation patterns in opvaboff and opvabon cell lineages of salmonella enterica. | phase variation of the salmonella enterica opvab operon generates a bacterial lineage with standard lipopolysaccharide structure (opvab(off)) and a lineage with shorter o-antigen chains (opvab(on)). regulation of opvab lineage formation is transcriptional, and is controlled by the lysr-type factor oxyr and by dna adenine methylation. the opvab regulatory region contains four sites for oxyr binding (obsa-d), and four methylatable gatc motifs (gatc1-4). opvab(off) and opvab(on) cell lineages displ ... | 2016 | 26687718 |
| quinolone resistance mechanisms among salmonella enterica in malaysia. | the prevalence of quinolone-resistant salmonella enterica is on the rise worldwide. salmonella enterica is one of the major foodborne pathogens in malaysia. therefore, we aim to investigate the occurrence and mechanisms of quinolone resistance among salmonella strains isolated in malaysia. a total of 283 salmonella strains isolated from food, humans, and animals were studied. the disk diffusion method was used to examine the quinolone susceptibility of the strains, and the minimum inhibitory con ... | 2016 | 26683630 |
| modelling biofilm formation of salmonella enterica ser. newport as a function of ph and water activity. | the effect of ph and water activity (aw) on the formation of biofilm by salmonella enterica ser. newport, previously identified as a strong biofilm producer, was assessed. biofilm formation was evaluated in tryptone soy broth at 37 °c and at different combinations of ph (3.3-7.8) and aw (0.894-0.997). in total, 540 biofilm formation tests in 108 ph and aw combinations were carried out in polystyrene microtiter plates using crystal violet staining and optical density (od; 580 nm) measurements. si ... | 2016 | 26678133 |
| inactivation of salmonella senftenberg, salmonella typhimurium and salmonella tennessee in peanut butter by 915 mhz microwave heating. | this study evaluated the efficacy of a 915 mhz microwave with 3 different levels to inactivate 3 serovars of salmonella in peanut butter. peanut butter inoculated with salmonella enterica serovar senftenberg, s. enterica serovar typhimurium and s. enterica serovar tennessee were treated with a 915 mhz microwave with 2, 4 and 6 kw and acid and peroxide values and color changes were determined after 5 min of microwave heating. salmonella populations were reduced with increasing treatment time and ... | 2016 | 26678129 |
| rapid emergence and clonal dissemination of ctx-m-15-producing salmonella enterica serotype virchow, south korea. | the prevalence of cefotaxime-resistant salmonella enterica serotype virchow has dramatically increased in south korea since the first isolation in 2011. of 68 isolates collected over 10 years, 28 cefotaxime-resistant isolates harbored the bla(ctx-m-15) extended-spectrum β-lactamase gene and were closely related genetically, demonstrating the clonal dissemination of ctx-m-15-producing salmonella virchow in south korea. | 2016 | 26674083 |
| spatial-temporal epidemiology of human salmonella enteritidis infections with major phage types (pts 1, 4, 5b, 8, 13, and 13a) in ontario, canada, 2008-2009. | in ontario and canada, the incidence of human salmonella enterica serotype enteritidis (s. enteritidis) infections have increased steadily during the last decade. our study evaluated the spatial and temporal epidemiology of the major phage types (pts) of s. enteritidis infections to aid public health practitioners design effective prevention and control programs. | 2015 | 26673616 |
| salmonella enterica serovars enteritidis infection alters the indigenous microbiota diversity in young layer chicks. | avian gastrointestinal (gi) tracts are highly populated with a diverse array of microorganisms that share a symbiotic relationship with their hosts and contribute to the overall health and disease state of the intestinal tract. the microbiome of the young chick is easily prone to alteration in its composition by both exogenous and endogenous factors, especially during the early posthatch period. the genetic background of the host and exposure to pathogens can impact the diversity of the microbia ... | 2015 | 26664988 |
| a simple integrated microfluidic device for the multiplexed fluorescence-free detection of salmonella enterica. | rapid, inexpensive and simplistic nucleic acid testing (nat) is pivotal in delivering biotechnology solutions at the point-of-care (poc). we present a poly(methylmethacrylate) (pmma) microdevice where on-board infrared-mediated pcr amplification is seamlessly integrated with a particle-based, visual dna detection for specific detection of bacterial targets in less than 35 minutes. fluidic control is achieved using a capillary burst valve laser-ablated in a novel manner to confine the pcr reagent ... | 2016 | 26658961 |
| infection of murine macrophages by salmonella enterica serovar heidelberg blocks murine norovirus infectivity and virus-induced apoptosis. | gastroenteritis caused by bacterial and viral pathogens constitutes a major public health threat in the united states accounting for 35% of hospitalizations. in particular, salmonella enterica and noroviruses cause the majority of gastroenteritis infections, with emergence of sporadic outbreaks and incidence of increased infections. although mechanisms underlying infections by these pathogens have been individually studied, little is known about the mechanisms regulating co-infection by these pa ... | 2015 | 26658916 |
| molecular characterization of salmonella enterica serovars isolated from a turkey production facility in the absence of selective antimicrobial pressure. | this study evaluated antimicrobial resistance and virulence factors in salmonella enterica isolated from a turkey flock in which the birds were raised in an environment where antimicrobials were not administered to the birds, either through feed or water. salmonella was isolated from turkeys and various environmental samples in the facility using conventional microbiological procedures. isolates were serotyped and analyzed phenotypically by antimicrobial resistance profiling and genotypically by ... | 2016 | 26653998 |
| multiplex pcr for diagnosis of salmonella enterica serovar typhi. | typhoid fever caused by salmonella enterica serovar typhi is endemic in developing countries. its detection by culturing on specific media or serological methods like the widal test is time consuming and/or less sensitive than the pcr technique. here we apply a multiplex pcr dependent detection for s. typhi using two specific primers for inva and flic genes. | 2015 | 26642717 |
| mechanism of na(+)-dependent citrate transport from the structure of an asymmetrical cits dimer. | the common human pathogen salmonella enterica takes up citrate as a nutrient via the sodium symporter secits. uniquely, our 2.5 å x-ray structure of the secits dimer shows three different conformations of the active protomer. one protomer is in the outside-facing state. two are in different inside-facing states. all three states resolve the substrates in their respective binding environments. together with comprehensive functional studies on reconstituted proteoliposomes, the structures explain ... | 2015 | 26636752 |
| indolent non-typhoidal salmonella vertebral osteomyelitis in a diabetic patient. | we herein describe the case of a 59-year-old japanese man with diabetes mellitus who presented with vertebral osteomyelitis caused by salmonella enterica subspecies enterica serovar enteritidis. the patient presented with a persistent fever without back pain. extraintestinal infections of salmonella species are well known and are often reported in immunocompromised patients; however, they are rare in non-immunosuppressed patients. the protracted course and atypical presentation of osteomyelitis ... | 2015 | 26631898 |
| distribution and factors associated with salmonella enterica genotypes in a diverse population of humans and animals in qatar using multi-locus sequence typing (mlst). | salmonella enterica is one of the most commonly reported causes of bacterial foodborne illness around the world. understanding the sources of this pathogen and the associated factors that exacerbate its risk to humans will help in developing risk mitigation strategies. the genetic relatedness among salmonella isolates recovered from human gastroenteritis cases and food animals in qatar were investigated in the hope of shedding light on these sources, their possible transmission routes, and any a ... | 2017 | 26631436 |
| validation of single and pooled manure drag swabs for the detection of salmonella serovar enteritidis in commercial poultry houses. | single swabs (cultured individually) are currently used in the food and drug administration (fda) official method for sampling the environment of commercial laying hens for the detection of salmonella enterica ssp. serovar enteritidis (salmonella enteritidis). the fda has also granted provisional acceptance of the national poultry improvement plan's (npip) salmonella isolation and identification methodology for samples taken from table-egg layer flock environments. the npip method, as with the f ... | 2015 | 26629631 |
| immortalization of fetal bovine colon epithelial cells by expression of human cyclin d1, mutant cyclin dependent kinase 4, and telomerase reverse transcriptase: an in vitro model for bacterial infection. | cattle are the economically important animals in human society. they are essential for the production of livestock products such as milk and meats. the production efficiency of livestock products is negatively impacted by infection with zoonotic pathogens. to prevent and control infectious diseases, it is important to understand the interaction between cattle tissue and pathogenic bacteria. in this study, we established an in vitro infection model of an immortalized bovine colon-derived epitheli ... | 2015 | 26624883 |
| case report: an outbreak of food-borne typhoid fever due to salmonella enterica serotype typhi in japan reported for the first time in 16 years. | for the first time in 16 years, a food-borne outbreak of typhoid fever due to salmonella enterica serotype typhi was reported in japan. seven patients consumed food in an indian buffet at a restaurant in the center of tokyo, while one was a nepali chef in the restaurant, an asymptomatic carrier and the implicated source of this outbreak. the multiple-locus variable-number tandem repeat analysis showed 100% consistency in the genomic sequence for five of the eight cases. | 2016 | 26621565 |
| molecular epidemiological characteristics of salmonella enterica serovars enteritidis, typhimurium and livingstone strains isolated in a tunisian university hospital. | enteritidis, typhimurium and livingstone are the main salmonella enterica serovars recovered in tunisia. here, we aimed to assess the genetic diversity of fifty-seven salmonella enterica strains from different sampling periods, origins and settings using pulsed-field gel electrophoresis (pfge), multi-locus sequence typing (mlst) and multi-locus variable-number tandem repeat analysis (mlva). salmonella enteritidis, isolated from human and food sources from two regions in sfax in 2007, were groupe ... | 2016 | 26608804 |
| mara and rama regulate virulence in salmonella enterica serovar choleraesuis. | salmonella enterica serovar choleraesuis is considered as an important porcine pathogen that causes serious systemic infections and exhibits poor response to treatment because of an increase in multidrug resistance (mdr). among the various regulators of resistance, multiple antibiotic resistance factor a (mara) and regulator of acetate metabolism a (rama) are the most effective in conferring antibiotic tolerance by activation of multidrug efflux pumps. here we investigated the regulation of viru ... | 2015 | 26608721 |
| lipidbuilder: a framework to build realistic models for biological membranes. | the physical and chemical characterization of biological membranes is of fundamental importance for understanding the functional role of lipid bilayers in shaping cells and organelles, steering vesicle trafficking and promoting membrane-protein signaling. molecular dynamics simulations stand as a powerful tool to probe the properties of membranes at atomistic level. however, the biological membrane is highly complex, and closely mimicking its physiological constitution in silico is not a straigh ... | 2015 | 26606666 |
| detection of salmonella enterica in pigs at slaughter and comparison with human isolates in italy. | in 2013-2014, 201 pigs belonging to 67 batches were tested for salmonella in their mesenteric lymph nodes (mln) in one abattoir of northern italy. for each batch, faecal material was collected at lairage by swabbing the pen floor for approximately 1600 cm(2). the aim of this study was to investigate the prevalence of salmonella in mln of pigs at slaughter, to assess salmonella contamination at lairage and to evaluate the effect of lairage duration on its prevalence. serotyping, xbai pfge typing ... | 2016 | 26606578 |
| salmonella newport causing osteomyelitis in a patient with diabetes. | salmonella is a foodborne pathogen that commonly causes intestinal symptoms. bacteraemia and extraintestinal infections have been documented within the literature, and are more frequently associated with immunodeficiency and general debilitation. we discuss the case of a previously well 36-year-old man who presented with a septic knee and new-onset diabetes. imaging confirmed osteomyelitis and a brodie's abscess, with blood and tissue cultures revealing the isolate salmonella enterica newport. h ... | 2015 | 26604232 |
| simplest identification, o-specific polysaccharide purification and antigenic evaluation of salmonella enterica serovar typhi vi negative isolate. | currently licensed typhoid vaccines are based on vi capsular polysaccharides. recent molecular reports from typhoid endemic countries state that salmonella enterica serovar typhi (s. typhi) vi negative strains occur naturally and cause typhoid fever which is indistinguishable from disease caused by vi positive strains. vaccine based on vi polysaccharide may not protect patients if the invading s. typhi are negative for vi. the lipopolysaccharide (lps) is an essential component of s. typhi outer ... | 2015 | 26600755 |
| comparison of mixed effects models of antimicrobial resistance metrics of livestock and poultry salmonella isolates from a national monitoring system. | antimicrobial use in agriculture is considered a pathway for the selection and dissemination of resistance determinants among animal and human populations. from 1997 through 2003 the u.s. national antimicrobial resistance monitoring system (narms) tested clinical salmonella isolates from multiple animal and environmental sources throughout the united states for resistance to panels of 16-19 antimicrobials. in this study we applied two mixed effects models, the generalized linear mixed model (glm ... | 2015 | 26597093 |
| interactions between bacteria and the gut mucosa: do enteric neurotransmitters acting on the mucosal epithelium influence intestinal colonization or infection? | the intestinal epithelium is a critical barrier between the internal and external milieux of the mammalian host. epithelial interactions between these two host environments have been shown to be modulated by several different, cross-communicating cell types residing in the gut mucosa. these include enteric neurons, whose activity is influenced by bacterial pathogens, and their secreted products. neurotransmitters appear to influence epithelial associations with bacteria in the intestinal lumen. ... | 2016 | 26589216 |
| complete genome sequences of two outbreak strains of salmonella enterica subsp. enterica serovar thompson associated with cilantro. | salmonella enterica subsp. enterica serovar thompson strains rm1984 (cadph-99a2334) and rm1986 (cadph-99a2345) are associated with a 1999 outbreak in contaminated cilantro. we report here the complete genome sequences and annotation of these two s. thompson strains. these genomes are distinct and provide additional data for our understanding of s. enterica. | 2015 | 26586897 |
| epigenetic control of salmonella enterica o-antigen chain length: a tradeoff between virulence and bacteriophage resistance. | the salmonella enterica opvab operon is a horizontally-acquired locus that undergoes phase variation under dam methylation control. the opva and opvb proteins form intertwining ribbons in the inner membrane. synthesis of opva and opvb alters lipopolysaccharide o-antigen chain length and confers resistance to bacteriophages 9na (siphoviridae), det7 (myoviridae), and p22 (podoviridae). these phages use the o-antigen as receptor. because opvab undergoes phase variation, s. enterica cultures contain ... | 2015 | 26583926 |
| usefulness of high-quality core genome single-nucleotide variant analysis for subtyping the highly clonal and the most prevalent salmonella enterica serovar heidelberg clone in the context of outbreak investigations. | salmonella enterica serovar heidelberg is the second most frequently occurring serovar in quebec and the third-most prevalent in canada. given that conventional pulsed-field gel electrophoresis (pfge) subtyping for common salmonella serovars, such as s. heidelberg, yields identical subtypes for the majority of isolates recovered, public health laboratories are desperate for new subtyping tools to resolve highly clonal s. heidelberg strains involved in outbreak events. as pfge was unable to discr ... | 2016 | 26582830 |
| overview of molecular typing tools for the characterization of salmonella enterica in malaysia. | | 2015 | 26582097 |
| 2-aminoacrylate stress induces a context-dependent glycine requirement in rida strains of salmonella enterica. | the reactive enamine 2-aminoacrylate (2aa) is a metabolic stressor capable of damaging cellular components. members of the broadly conserved rid (rida/yer057c/uk114) protein family mitigate 2aa stress in vivo by facilitating enamine and/or imine hydrolysis. previous work showed that 2aa accumulation in rida strains of salmonella enterica led to the inactivation of multiple target enzymes, including serine hydroxymethyltransferase (glya). however, the specific cause of a rida strain's inability t ... | 2015 | 26574511 |
| complete genome sequence of salmonella enterica subsp. enterica serovar typhi isolate b/sf/13/03/195 associated with a typhoid carrier in pasir mas, kelantan, malaysia. | we report here the complete genome sequence of salmonella enterica subsp. enterica serovar typhi b/sf/13/03/195 obtained from a typhoid carrier, who is a food handler in pasir mas, kelantan. | 2015 | 26564035 |
| genome sequence of salmonella enterica subsp. enterica serovar typhi isolate pm016/13 from untreated well water associated with a typhoid outbreak in pasir mas, kelantan, malaysia. | salmonella enterica subsp. enterica serovar typhi is a human-restricted pathogen that causes typhoid fever. even though it is a human-restricted pathogen, the bacterium is also isolated from environments such as groundwater and pond water. here, we describe the genome sequence of the salmonella enterica subsp. enterica serovar typhi pm016/13 which was isolated from well water during a typhoid outbreak in kelantan, malaysia, in 2013. | 2015 | 26564032 |
| crystal structure of an antigenic outer-membrane protein from salmonella typhi suggests a potential antigenic loop and an efflux mechanism. | st50, an outer-membrane component of the multi-drug efflux system from salmonella enterica serovar typhi, is an obligatory diagnostic antigen for typhoid fever. st50 is an excellent and unique diagnostic antigen with 95% specificity and 90% sensitivity and is used in the commercial diagnosis test kit (typhidot(tm)). the crystal structure of st50 at a resolution of 2.98 å reveals a trimer that forms an α-helical tunnel and a β-barrel transmembrane channel traversing the periplasmic space and oute ... | 2015 | 26563565 |
| salmonella enterica serovar napoli infection in italy from 2000 to 2013: spatial and spatio-temporal analysis of cases distribution and the effect of human and animal density on the risk of infection. | salmonella napoli is uncommon in europe. in italy however, it has been growing in importance since 2000. to date, no risk factors have been identified to account for its rise. this study aims at describing the epidemiology, spatial and spatio-temporal patterns of s. napoli in italy from 2000 to 2013, and to explore the role of several environmental correlates, namely urbanization, altitude and number of livestock farms, on the risk of s. napoli infection among humans. | 2015 | 26558381 |
| comparative genomics study for identification of putative drug targets in salmonella typhi ty2. | typhoid presents a major health concern in developing countries with an estimated annual infection rate of 21 million. the disease is caused by salmonella typhi, a pathogenic bacterium acquiring multiple drug resistance. we aim to identify proteins that could prove to be putative drug targets in the genome of s. typhi str. ty2. we employed comparative and subtractive genomics to identify targets that are absent in humans and are essential to s. typhi ty2. we concluded that 46 proteins essential ... | 2016 | 26555890 |
| [a case of osteomyelitis with a granulomatous lesion caused by salmonella infantis]. | we report herein on a case of osteomyelitis with a granulomatous lesion caused by salmonella enterica subsp. enterica serovar infantis (salmonella infantis). a 30-year-old japanese man presenting with a 3-week history of left ankle pain was suspected to have either a tumor or osteomyelitis, on the basis of imaging study findings. he underwent a surgical resection of the lesion. histopathological examination revealed a granuloma. however, s. infantis was cultured from the biopsy sample. cefazolin ... | 2015 | 26554224 |
| filament formation of salmonella paratyphi a accompanied by ftsz assembly impairment and low level ppgpp. | previously, we reported that salmonella enterica serovar paratyphi a strain s602 grew into multinuclear, nonseptate, and nonlethal filaments on agar plates containing nitrogenous salts. strain s602 was more sensitive to osmotic and oxidative stress than the reference strain 3p243 of nonfilamentous salmonella paratyphi a. strain s602 had an amber mutation (c154t) in rpos. the revertant of this mutant, sr603, was repressed to form filaments under conditions with abundant nitrogenous salts. however ... | 2015 | 26549184 |
| contribution of avian salmonella enterica isolates to human salmonellosis cases in constantine (algeria). | an epidemiological investigation was carried out on one hundred salmonella isolates from broiler farms, slaughterhouses, and human patients in the constantine region of algeria, in order to explore the contribution of avian strains to human salmonellosis cases in this region over the same period of time. the isolates were characterized by phenotypic as well as genotypic methods. a large variety of antimicrobial resistance profiles was found among human isolates, while only seven profiles were fo ... | 2015 | 26543858 |
| salmonella prevalence and antimicrobial susceptibility from the national animal health monitoring system sheep 2011 study. | salmonella is a major cause of foodborne illness and can cause clinical disease in animals. understanding the on-farm ecology of salmonella will be helpful in decreasing the risk of foodborne transmission. an objective of this study was to determine the prevalence of salmonella among fecal samples collected on sheep operations in the united states. another objective was to compare the use of composite fecal samples with fecal samples collected from individual sheep as a tool for screening sheep ... | 2015 | 26540254 |
| salmonella typhimurium and salmonella sofia: growth in and persistence on eggs under production and retail conditions. | salmonellosis in australia has been linked to eggs and egg products with specific serotypes associated with outbreaks. we compared attachment to and survival on egg shells and growth in eggs of two salmonella serotypes, an egg outbreak associated salmonella typhimurium and a non-egg-associated salmonella enterica ssp. ii 1,4,12,27:b:[e,n,x] (s. sofia). experiments were conducted at combinations of 4, 15, 22, 37 and 42 °c. no significant differences occurred between the serotypes in maximum growt ... | 2015 | 26539536 |
| sampling and homogenization strategies significantly influence the detection of foodborne pathogens in meat. | efficient preparation of food samples, comprising sampling and homogenization, for microbiological testing is an essential, yet largely neglected, component of foodstuff control. salmonella enterica spiked chicken breasts were used as a surface contamination model whereas salami and meat paste acted as models of inner-matrix contamination. a systematic comparison of different homogenization approaches, namely, stomaching, sonication, and milling by fastprep-24 or speedmill, revealed that for sur ... | 2015 | 26539462 |
| detection and molecular characterization of salmonella enterica serovar eppendorf circulating in chicken farms in tunisia. | salmonella enterica subsp. enterica serovar eppendorf, with antigenic formula 1,4,12,[27]:d:1,5, is an infrequent serovar. however, 14% (20 of 142) of the isolates recovered during june-july 2012 in chicken farms in tunisia belonged to s. eppendorf. these isolates were analysed for resistance and virulence profiles. none of them were susceptible to all antimicrobials tested, while 70%, 60%, 50%, 50%, 20% and 5% were resistant to sulphonamides (sul1, sul2 and sul3), streptomycin (aada1-like), tri ... | 2016 | 26537844 |
| salmonella grows vigorously on seafood and expresses its virulence and stress genes at different temperature exposure. | seafood is not considered the natural habitat of salmonella except the river fish, but still, the incidence of salmonella in seafood is in a steady rise. by extending our understanding of salmonella growth dynamics and pathogenomics in seafood, we may able to improve seafood safety and offer better strategies to protect the public health. the current study was thus aimed to assess the growth and multiplication of non-typhoidal and typhoidal salmonella serovars on seafood and further sought to ev ... | 2015 | 26531707 |
| salmonella enterica resistant to antimicrobials in wastewater effluents and black-headed gulls in the czech republic, 2012. | we investigated the presence and epidemiological relatedness of salmonella isolates from a wastewater treatment plant (wwtp) in brno, czech republic and from nestlings of black-headed gulls (chroicocephalus ridibundus) at the nove mlyny waterworks, situated 35 km downstream from the wwtp. during 2012, we collected 37 wastewater samples and 284 gull cloacal swabs. from wastewater samples, we obtained 89 salmonella isolates belonging to 19 serotypes. at least one resistant strain was contained in ... | 2016 | 26519571 |
| intestinal lactic acid bacteria from muscovy duck as potential probiotics that alter adhesion factor gene expression. | the purpose of this study was to assess the suitability of lactic acid bacteria (labs) isolated from muscovy duck as a potential probiotic. isolates were identified by targeted polymerase chain reaction and assessed in vitro for probiotic characteristics such as autoaggregation; surface-charge; hydrophobicity; tolerance to acidic ph, bile salts and protease; and expression of genes involved in caco-2 cell adhesion. the lab isolates exhibited strong resistance to high bile concentration and acidi ... | 2015 | 26505375 |
| biomarker identification from next-generation sequencing data for pathogen bacteria characterization and surveillance. | the purpose was to develop an analytical pipeline for specific gene analysis and biomarker discovery from next generation sequencing (ngs) data. | 2015 | 26501894 |
| breast abscess by salmonella paratyphi a: case report and literature review. | a case of suspicious breast mass due to salmonella enterica serotype paratyphi a in a non-lactating, diabetic female is being described. the infection was successfully treated with a combination of surgical drainage and antibiotic treatment. this case highlights the fact that a focal salmonella infection involving the breast should be considered as a rare differential diagnosis for breast malignancy and submission of specimens for microbiological analysis may be helpful in establishment of an ac ... | 2015 | 26500907 |
| is200 and multilocus sequence typing for the identification of salmonella enterica serovar typhi strains from indonesia. | in this work, is200 and multi-locus sequence typing (mlst) were used to analyze 19 strains previously serotyped as salmonella enterica serovar typhi and isolated in indonesia (16 strains), mexico (2 strains), and switzerland (1 strain). most of the strains showed the most common typhi sequence types, st1 and st2, and a new typhi genotype (st1856) was described. however, one isolate from mexico and another from indonesia were of the st365 and st426 sequence types, indicating that they belonged to ... | 2015 | 26496617 |
| genome sequences of multidrug-resistant salmonella enterica serovar paratyphi b (dt+) and heidelberg strains from the colombian poultry chain. | salmonella enterica is a pathogen of significant public health importance that is frequently associated with foodborne illness. we report the whole-genome sequences of four multidrug-resistant salmonella enterica serovar paratyphi b and heidelberg strains, isolated from the colombian poultry chain. the isolates contain a variety of antimicrobial resistance genes for aminoglycosides, β-lactams, fluoroquinolones, sulfonamides, tetracycline, and trimethoprim. | 2015 | 26494672 |
| first draft genome sequence of salmonella enterica serovar gallinarum strain vtccbaa614, isolated from chicken in india. | salmonella enterica subsp. enterica serovar gallinarum biovar gallinarum causes fowl typhoid (ft), which results in huge economic losses to poultry farmers in india. we report the draft genome sequence of salmonella biovar gallinarum strain vtccbaa614, isolated from a chicken in an ft affected broiler flock. | 2015 | 26494667 |
| subtyping of salmonella food isolates suggests the geographic clustering of serotype telaviv. | salmonella is commonly found in a variety of food products and is a major cause of bacterial foodborne illness throughout the world. in this study, we investigated the prevalence and diversity of salmonella in eight different food types: sheep ground meat, cow ground meat, chicken meat, cow offal, traditional sanliurfa cheese, unripened feta cheese, pistachios, and isot (a spice blend of dried red peppers specific to sanliurfa), traditionally and commonly consumed in turkey. among 192 food sampl ... | 2015 | 26489049 |
| antimicrobial resistance and molecular typing of salmonella stanley isolated from humans, foods, and environment. | salmonella enterica serovar stanley is an important serovar that has been increasingly identified in human salmonellosis. the present study aimed to investigate the antimicrobial resistance and molecular typing of 88 salmonella stanley strains isolated from humans (diarrhea patients, n = 64; and healthy carrier, n = 1), foods (aquatic products, n = 16; vegetable, n = 1; and pork, n = 1), and environment (waste water, n = 2; and river water, n = 3) in shanghai, china from 2006 to 2012. nearly hal ... | 2015 | 26488910 |