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https://www.readbyqxmd.com/read/28712023/selection-of-potential-probiotic-lactobacillus-with-inhibitory-activity-against-salmonella-and-fecal-coliform-bacteria
#1
Mattika Abhisingha, Jureeporn Dumnil, Chetsadaporn Pitaksutheepong
Three hundred and sixty presumptive lactic acid bacteria (LAB) isolated from pregnant sows, newborn, suckling, and weaned piglets were preliminarily screened for anti-Salmonella activity. Fifty-eight isolates consisting of Lactobacillus reuteri (n = 32), Lactobacillus salivarius (n = 10), Lactobacillus mucosae (n = 8), Lactobacillus johnsonii (n = 5), and Lactobacillus crispatus (n = 3) were selected and further characterized for probiotic properties including production of antimicrobial substances, acid and bile tolerance, and cell adherence to Caco-2 cells...
July 15, 2017: Probiotics and Antimicrobial Proteins
https://www.readbyqxmd.com/read/28705959/draft-genome-sequences-of-256-salmonella-enterica-subsp-enterica-serovar-enteritidis-strains-isolated-from-humans-food-chickens-and-farm-environments-in-brazil
#2
Fábio Campioni, Guojie Cao, George Kastanis, Maria Sanchez Leon, Alzira Maria Morato Bergamini, Dália Dos Prazeres Rodrigues, Marc William Allard, Juliana Pfrimer Falcão
Salmonella enterica subsp. enterica serovar Enteritidis emerged in the late 1980s as the most isolated Salmonella serovar worldwide. Here, we report the draft genomes of 256 S Enteritidis strains isolated from humans, food, chickens, and farm environments in Brazil. These draft genomes will help enhance our understanding of this serovar in Brazil.
July 13, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28702137/phage-therapy-assessment-of-the-efficacy-of-a-bacteriophage-isolated-in-the-treatment-of-salmonellosis-induced-by-salmonella-enteritidis-in-mice
#3
Farhad Nikkhahi, Mohammad Mehdi Soltan Dallal, Mahmood Alimohammadi, Abbas Rahimi Foroushani, Zahra Rajabi, Fatemeh Fardsanei, Seyed Mostafa Imeni, Parisa Torabi Bonab
AIM: This work aims to isolate and perform comparative studies of a phages active against a Salmonella enteritidis strain from Iran. Also, suitable phage candidates for therapy of mice will be selected. BACKGROUND: Bacteriophage is of particular interest as a biocontrol agent in the prevention of food-borne illnesses. In recent years tend to use bacteriophages to control pathogenic bacteria has increased. A bacteriophage is considered to be a potent antibiotic alternative for treating bacterial infections...
2017: Gastroenterology and Hepatology From Bed to Bench
https://www.readbyqxmd.com/read/28696782/development-of-a-novel-rapid-multiplex-polymerase-chain-reaction-assay-for-the-detection-and-differentiation-of-salmonella-enterica-serovars-enteritidis-and-typhimurium-using-ultra-fast-convection-polymerase-chain-reaction
#4
Tae-Hoon Kim, Hyun Jin Hwang, Jeong Hee Kim
Salmonella enterica serovars Enteritidis and Typhimurium are the most common causative agents of human nontyphoidal salmonellosis. The rapid detection and timely treatment of salmonellosis are important to increase the curative ratio and prevent spreading of the disease. In this study, we developed a rapid multiplex convection polymerase chain reaction (PCR) method to detect Salmonella spp. and differentiate Salmonella Enteritidis and Salmonella Typhimurium. We used the invA gene for Salmonella spp. detection...
July 11, 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/28692655/population-based-incidence-seasonality-and-serotype-distribution-of-invasive-salmonellosis-among-children-in-nanoro-rural-burkina-faso
#5
Issa Guiraud, Annelies Post, Seydou Nakanabo Diallo, Palpouguini Lompo, Jessica Maltha, Kamala Thriemer, Christian Marc Tahita, Benedikt Ley, Karim Derra, Emmanuel Bottieau, Adama Kazienga, Céline Schurmans, Raffaella Ravinetto, Eli Rouamba, Johan Van Griensven, Sophie Bertrand, Halidou Tinto, Jan Jacobs
BACKGROUND: Bloodstream infections (BSI) caused by Salmonella Typhi and invasive non-Typhoidal Salmonella (iNTS) frequently affect children living in rural sub-Saharan Africa but data about incidence and serotype distribution are rare. OBJECTIVE: The present study assessed the population-based incidence of Salmonella BSI and severe malaria in a Health and Demographic Surveillance System in a rural area with seasonal malaria transmission in Nanoro, Burkina Faso. METHODS: Children between 2 months-15 years old with severe febrile illness were enrolled during a one-year surveillance period (May 2013-May 2014)...
2017: PloS One
https://www.readbyqxmd.com/read/28680418/serotype-distribution-antimicrobial-resistance-and-class-1-integrons-profiles-of-salmonella-from-animals-in-slaughterhouses-in-shandong-province-china
#6
Xiaonan Zhao, Chaoqun Ye, Weishan Chang, Shuhong Sun
The current study aimed to analyze the prevalence and characterization of Salmonella enterica isolated from animals in slaughterhouses before slaughter. A total of 143 non-duplicate Salmonella were recovered from 1,000 fresh fecal swabs collected from four major pig slaughterhouses (49/600, 8.2%) and four major chicken slaughterhouses (94/400, 23.5%) between March and July 2016. Among Salmonella isolates from pigs, the predominant serovars were Salmonella Rissen (28/49, 57.1%) and Typhimurium (14/49, 28.6%), and high antimicrobial resistance rates were observed for tetracycline (44/49, 89...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28677399/super-cationic-carbon-quantum-dots-synthesized-from-spermidine-as-an-eye-drop-formulation-for-topical-treatment-of-bacterial-keratitis
#7
Hong-Jyuan Jian, Ren-Siang Wu, Tzu-Yu Lin, Yu-Jia Li, Han-Jia Lin, Scott G Harroun, Jui-Yang Lai, Chih-Ching Huang
We have developed a one-step method to synthesize carbon quantum dots (CQDPAs) from biogenic polyamines (PAs) as an antibacterial agent for topical treatment of bacterial keratitis (BK). CQDs synthesized by direct pyrolysis of spermidine (Spd) powder through a simple dry heating treatment exhibit a solubility and yield much higher than those from putrescine and spermine. We demonstrate that CQDs obtained from Spds (CQDSpds) possess effective antibacterial activities against non-multidrug-resistant Escherichia coli, Staphylococcus aureus, Pseudomonas aeruginosa, and Salmonella enterica serovar Enteritidis bacteria and also against the multidrug-resistant bacteria, methicillin-resistant S...
July 5, 2017: ACS Nano
https://www.readbyqxmd.com/read/28675263/specific-and-cross-reactive-plasmablast-response-in-humans-after-primary-and-secondary-immunization-with-vi-capsular-polysaccharide-typhoid-vaccine
#8
Sari H Pakkanen, Jussi M Kantele, Lars Rombo, Anu Kantele
Secondary immunization with polysaccharide vaccines may imply a risk of hyporesponsiveness. Despite the wide use of typhoid Vi capsular polysaccharide vaccine, its potential tendency to hyporesponsiveness has been inadequately addressed. While previous studies have explored serum antibody responses, we applied a more sensitive approach, a single-cell assay for circulating plasmablasts, to compare primary and secondary responses. Twelve subjects received primary and booster doses of the Vi vaccine (Typherix(®)) at 30-37-month intervals...
July 3, 2017: Scandinavian Journal of Immunology
https://www.readbyqxmd.com/read/28669384/differences-in-expression-of-genes-in-the-myd88-and-trif-signalling-pathways-and-methylation-of-tlr4-and-trif-in-tibetan-chickens-and-daheng-s03-chickens-infected-with-salmonella-enterica-serovar-enteritidis
#9
Xiaocheng Li, Peng Zhang, Xiaosong Jiang, Huarui Du, Chaowu Yang, Zengrong Zhang, Shuai Men, Zhikun Zhang, Wei Jiang, Hongning Wang
Salmonella enterica serovar (S. enteritidis) is a pathogenic bacterium that can cause symptoms of food poisoning, leading to death of poultry, resulting in serious economic losses. The MyD88 and TRIF signalling pathways play important roles in activating innate and adaptive immunity in chickens infected with S. enteritidis. The objective of the present study was to characterize in vivo mRNA expressions, protein levels and methylation levels of genes in the above two pathways in both Tibetan chickens and DaHeng S03 chickens infected with S...
July 2017: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/28663302/complete-genome-sequences-of-two-salmonella-enterica-subsp-enterica-serovar-enteritidis-strains-isolated-from-egg-products-in-the-united-states
#10
Lijun Hu, Guodong Zhang, Marc W Allard, Kuan Yao, Robert Stones, Maria Hoffmann, Eric W Brown
Egg-associated salmonellosis is an important public health problem in many countries. Here, we report the genome sequences, including plasmids, of two strains of Salmonella enterica subsp. enterica serovar Enteritidis isolated from egg products in 2012 and 2013 in the United States. This will provide more information and insight into the research about egg-associated salmonellosis.
June 29, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28648636/contribution-of-flagella-and-motility-to-gut-colonisation-and-pathogenicity-of-salmonella-enteritidis-in-the-chicken
#11
Fernanda de Oliveira Barbosa, Oliveiro Caetano de Freitas Neto, Diego Felipe Alves Batista, Adriana Maria de Almeida, Marcela da Silva Rubio, Lucas Bocchini Rodrigues Alves, Rosemeire de Oliveira Vasconcelos, Paul Andrew Barrow, Angelo Berchieri Junior
Salmonella Enteritidis causes fowl paratyphoid in poultry and is frequently associated to outbreaks of food-borne diseases in humans. The role of flagella and flagella-mediated motility into host-pathogen interplay is not fully understood and requires further investigation. In this study, one-day-old chickens were challenged orally with a wild-type strain Salmonella Enteritidis, a non-motile but fully flagellated (SE ΔmotB) or non-flagellated (SE ΔfliC) strain to evaluate their ability to colonise the intestine and spread systemically and also of eliciting gross and histopathological changes...
June 7, 2017: Brazilian Journal of Microbiology: [publication of the Brazilian Society for Microbiology]
https://www.readbyqxmd.com/read/28646853/immunogenicity-and-protective-efficacy-of-a-salmonella-enteritidis-sptp-mutant-as-a-live-attenuated-vaccine-candidate
#12
Zhijie Lin, Peipei Tang, Yang Jiao, Xilong Kang, Qiuchun Li, Xiulong Xu, Jun Sun, Zhiming Pan, Xinan Jiao
BACKGROUND: Salmonella enterica serovar Enteritidis (S. Enteritidis) is a highly adaptive pathogen in both humans and animals. As a Salmonella Type III secretion system (T3SS) effector, Salmonella protein tyrosine phosphatase (SptP) is critical for virulence in this genus. To investigate the feasibility of using C50336ΔsptP as a live attenuated oral vaccine in mice, we generated the sptP gene deletion mutant C50336ΔsptP in S. Enteritidis strain C50336 by λ-Red mediated recombination and evaluated the protective ability of the S...
June 24, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/28646719/dna-aptamer-based-colorimetric-detection-platform-for-salmonella-enteritidis
#13
Ceren Bayraç, Füsun Eyidoğan, Hüseyin Avni Öktem
Food safety is a major issue to protect public health and a key challenge is to find detection methods for identification of hazards in food. Food borne infections affects millions of people each year and among pathogens, Salmonella Enteritidis is most widely found bacteria causing food borne diseases. Therefore, simple, rapid, and specific detection methods are needed for food safety. In this study, we demonstrated the selection of DNA aptamers with high affinity and specificity against S. Enteritidis via Cell Systematic Evolution of Ligands by Exponential Enrichment (Cell-SELEX) and development of sandwich type aptamer-based colorimetric platforms for its detection...
June 16, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28644912/biofilm-formation-and-disinfectant-resistance-of-salmonella-spp-in-mono-and-dual-species-with-pseudomonas-aeruginosa
#14
Xinyi Pang, Yishan Yang, Hyun-Gyun Yuk
AIMS: This study aimed to evaluate the biofilm formation and disinfectant resistance of Salmonella cells in mono- and dual-species biofilms with Pseudomonas aeruginosa, and to investigate the role of extracellular polymeric substances (EPS) in protection of biofilms against disinfection treatment. METHODS AND RESULTS: The populations of Salmonella in mono- or dual-species biofilms with P. aeruginosa on stainless steel (SS) coupons were determined before and after exposure to commercial disinfectant, 50 μg ml(-1) chlorine or 200 μg ml(-1) Ecolab(®) Whisper(™) V (a blend of four effective quaternary ammonium compounds)...
June 23, 2017: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/28629018/the-bone-building-blues-self-hardening-copper-doped-calcium-phosphate-cement-and-its-in-vitro-assessment-against-mammalian-cells-and-bacteria
#15
Julietta V Rau, Victoria M Wu, Valerio Graziani, Inna V Fadeeva, Alexander S Fomin, Marco Fosca, Vuk Uskoković
A blue calcium phosphate cement with optimal self-hardening properties was synthesized by doping whitlockite (β-TCP) with copper ions. The mechanism and the kinetics of the cement solidification process were studied using energy dispersive X-ray diffraction and it was found out that hardening was accompanied by the phase transition from TCP to brushite. Reduced lattice parameters in all crystallographic directions resulting from the rather low (1:180) substitution rate of copper for calcium was consistent with the higher ionic radius of the latter...
October 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28623956/differential-protein-expression-in-chicken-macrophages-and-heterophils-in-vivo-following-infection-with-salmonella-enteritidis
#16
Zuzana Sekelova, Hana Stepanova, Ondrej Polansky, Karolina Varmuzova, Marcela Faldynova, Radek Fedr, Ivan Rychlik, Lenka Vlasatikova
In this study we compared the proteomes of macrophages and heterophils isolated from the spleen 4 days after intravenous infection of chickens with Salmonella Enteritidis. Heterophils were characterized by expression of MMP9, MRP126, LECT2, CATHL1, CATHL2, CATHL3, LYG2, LYZ and RSFR. Macrophages specifically expressed receptor proteins, e.g. MRC1L, LRP1, LGALS1, LRPAP1 and a DMBT1L. Following infection, heterophils decreased ALB and FN1, and released MMP9 to enable their translocation to the site of infection...
June 17, 2017: Veterinary Research
https://www.readbyqxmd.com/read/28621911/different-roles-of-cd4-cd8-and-%C3%AE-%C3%AE-t-lymphocytes-in-naive-and-vaccinated-chickens-during-s-enteritidis-infection
#17
Zuzana Sekelova, Ondrej Polansky, Hana Stepanova, Radek Fedr, Marcela Faldynova, Ivan Rychlik, Lenka Vlasatikova
Lymphocytes represent the key antigen-specific leukocyte subpopulation. Despite their importance in mounting an immune response, an unbiased description of proteins expressed by chicken lymphocytes has not been presented. In this study we therefore intravenously infected chickens with Salmonella Enteritidis, sorted CD4, CD8 and γδ T-lymphocytes from the spleen by flow cytometry and determined the proteome of each population by LC-MS/MS. CD4 T-lymphocyte characteristic proteins included ubiquitin SUMO-like domain and BAR domain containing proteins...
June 16, 2017: Proteomics
https://www.readbyqxmd.com/read/28615122/in-vitro-and-in-vivo-generation-of-heterophil-extracellular-traps-after-salmonella-exposure
#18
Jana Pieper, Maria Locke, Gunda Ruzaike, Stefanie Voigt, Ulrich Methner, Angela Berndt
The release of extracellular traps (ETs) by granulocytes is a unique strategy to stop the dissemination of microbial pathogens. This study was undertaken to elucidate the potential of avian granulocytes (heterophils) to form ETs that can arrest and kill Salmonella organisms. After in vitro exposure of isolated heterophils and in vivo infection of day-old chicks with Salmonella enterica subsp. enterica serovars Infantis (SI) or Enteritidis (SE), the generation of ETs as well as the trapping and survivability of Salmonella organisms in the ET meshwork were determined by means of microscopy and spectrophotometry...
June 2017: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/28611436/antibacterial-and-detoxifying-activity-of-nz17074-analogues-with-multi-layers-of-selective-antimicrobial-actions-against-escherichia-coli-and-salmonella-enteritidis
#19
Na Yang, Xuehui Liu, Da Teng, Zhanzhan Li, Xiumin Wang, Ruoyu Mao, Xiao Wang, Ya Hao, Jianhua Wang
NZ17074 (N1), an arenicin-3 derivative isolated from the lugworm, has potent antibacterial activity and is cytotoxic. To reduce its cytotoxicity, seven N1 analogues with different structures were designed by changing their disulfide bonds, hydrophobicity, or charge. The "rocket" analogue-N2 and the "kite" analogue-N6 have potent activity and showed lower cytotoxicity in RAW264.7 cells than N1. The NMR spectra revealed that N1, N2, and N6 adopt β-sheet structures stabilized by one or two disulfide bonds. N2 and N6 permeabilized the outer/inner membranes of E...
June 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28610640/multi-country-outbreak-of-salmonella-enteritidis-infection-linked-to-the-international-ice-hockey-tournament
#20
T Pärn, V Dahl, T Lienemann, J Perevosčikovs, B DE Jong
In April 2015, Finnish public health authorities alerted European Union member states of a possible multi-country Salmonella enteritidis outbreak linked to an international youth ice-hockey tournament in Latvia. The European Centre for Disease Prevention and Control (ECDC), Finnish and Latvian authorities initiated an outbreak investigation to identify the source. The investigation included a description of the outbreak, retrospective cohort study, microbiological investigation and trace-back. We identified 154 suspected and 96 confirmed cases from seven countries...
June 14, 2017: Epidemiology and Infection
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