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https://www.readbyqxmd.com/read/27922763/antimicrobial-resistance-in-nontyphoidal-salmonella-isolated-from-human-and-poultry-related-samples-in-brazil-20-year-meta-analysis
#1
Daiane Voss-Rech, Luciana Potter, Clarissa Silveira Luiz Vaz, Daniela Isabel Brayer Pereira, Luís Antonio Sangioni, Águeda Castagna Vargas, Sônia de Avila Botton
Nontyphoidal Salmonella are one of the leading causes of foodborne diseases in the world. As poultry products are recognized as main sources of human salmonellosis, nontyphoidal Salmonella control has become a global issue for the poultry industry. The increasing antimicrobial resistance in poultry-related nontyphoidal Salmonella serovars is a global matter of concern. By monitoring the evolution of antimicrobial resistance, alternative treatments can be identified and possible restrictions in the treatment of systemic human salmonellosis foreseen...
December 6, 2016: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/27916690/acyl-homoserine-lactone-changes-the-abundance-of-proteins-and-the-levels-of-organic-acids-associated-with-stationary-phase-in-salmonella-enteritidis
#2
Felipe Alves de Almeida, Natan de Jesus Pimentel Filho, Lanna Clícia Carrijo, Cláudia Braga Pereira Bento, Maria Cristina Baracat-Pereira, Uelinton Manoel Pinto, Leandro Licursi de Oliveira, Maria Cristina Dantas Vanetti
Quorum sensing (QS) is cell-cell communication mechanism mediated by signaling molecules known as autoinducers (AIs) that lead to differential gene expression. Salmonella is unable to synthesize the AI-1 acyl homoserine lactone (AHL), but is able to recognize AHLs produced by other microorganisms through SdiA protein. Our study aimed to evaluate the influence of AI-1 on the abundance of proteins and the levels of organic acids of Salmonella Enteritidis. The presence of N-dodecyl-homoserine lactone (C12-HSL) did not interfere on the growth or the total amount of extracted proteins of Salmonella...
December 1, 2016: Microbial Pathogenesis
https://www.readbyqxmd.com/read/27911082/necrotizing-and-haemorrhagic-hepatitis-and-enteritis-in-commercial-layer-pullets
#3
Yuko Sato, William L Wigle, Tsang Long Lin, Eric Gingerich, Patricia S Wakenell
This case report describes an episode of recurring severe necrotizing and haemorrhagic hepatitis and enteritis experienced in a flock of commercial layer pullets at 12 weeks of age and again at 18 weeks of age in Indiana. Pullets had been vaccinated at 10 weeks old using a trivalent Salmonella Enteritidis (SE)/Newcastle disease/infectious bronchitis oil-emulsion-inactivated vaccine. The pullets were found dead at 12 weeks with firm but friable, enlarged, haemorrhagic livers, enlarged spleens, and necrohaemorrhagic intestines...
December 2, 2016: Avian Pathology: Journal of the W.V.P.A
https://www.readbyqxmd.com/read/27905092/broad-spectrum-of-antimicrobial-properties-of-commercial-wines-from-different-vitis-vinifera-l-varieties
#4
Aleksandra Radovanović, Biljana Arsić, Vladimir Radovanović, Branimir Jovančičević, Vesna Nikolić
Fifteen commercial wines produced from international and autochthonic varieties of Vitis vinifera L. cultivation of different Balkan winegrowing subregions were studied for their antimicrobial activity against six Gram-positive (Clostridium perfringens, Bacillus subtilis, Staphylococcus aureus, Listeria inocua, Sarcina lutea and Micrococcus flavus) and six Gram-negative (Escherichia coli, Pseudomonas aeruginosa, Salmonella enteritidis, Shigella sonnei, Klebsiella pneumonia and Proteus vulgaris) bacteria. The concentrations and types of phenolic compounds responsible for antibacterial activity in wines were investigated by HPLC and spectroscopic methods...
January 2017: World Journal of Microbiology & Biotechnology
https://www.readbyqxmd.com/read/27900459/isolation-characterization-and-bioinformatic-analyses-of-lytic-salmonella-enteritidis-phages-and-tests-of-their-antibacterial-activity-in-food
#5
Han Han, Xiaoting Wei, Yi Wei, Xiufeng Zhang, Xuemin Li, Jinzhong Jiang, Ran Wang
Salmonella Enteritidis remains a major threat for food safety. To take efforts to develop phage-based biocontrol for S. Enteritidis contamination in food, in this study, the phages against S. Enteritidis were isolated from sewage samples, characterized by host range assays, DNA restriction enzyme pattern analyses, and transmission electron microscope observations, and tested for antibacterial activity in food; some potent phages were further characterized by bioinformatic analyses. Results showed that based on the plaque quality and host range, seven lytic phages targeting S...
November 30, 2016: Current Microbiology
https://www.readbyqxmd.com/read/27892879/cytokine-activation-during-embryonic-development-and-in-hen-ovary-and-vagina-during-reproductive-age-and-salmonella-infection
#6
M Anastasiadou, G Michailidis
Salmonellosis is one of the most important zoonotic diseases and is usually associated with consumption of Salmonella Enteritidis (SE) contaminated poultry meat or eggs. Contamination with SE is usually the result of infection of the digestive tract, or reproductive organs, especially the ovary and vagina. Thus, knowledge of endogenous innate immune mechanisms operating in the ovary and vagina of hen is an emerging aspect of reproductive physiology. Cytokines are key factors for triggering the immune response and inflammation in chicken to Salmonella infection...
September 28, 2016: Research in Veterinary Science
https://www.readbyqxmd.com/read/27884771/rapid-detection-of-salmonella-in-raw-chicken-breast-using-real-time-pcr-combined-with-immunomagnetic-separation-and-whole-genome-amplification
#7
Ji-Yeon Hyeon, Xiangyu Deng
We presented the first attempt to combine immunomagnetic separation (IMS), whole genome amplification by multiple displacement amplification (MDA) and real-time PCR for detecting a bacterial pathogen in a food sample. This method was effective in enabling real-time PCR detection of low levels of Salmonella enterica Serotype Enteritidis (SE) (∼10 CFU/g) in raw chicken breast without culture enrichment. In addition, it was able to detect refrigeration-stressed SE cells at lower concentrations (∼0.1 CFU/g) in raw chicken breast after a 4-h culture enrichment, shortening the detection process from days to hours and displaying no statistical difference in detection rate in comparison with a culture-based detection method...
November 20, 2016: Food Microbiology
https://www.readbyqxmd.com/read/27875307/salmonella-enteritidis-effector-avra-stabilizes-intestinal-tight-junctions-via-the-jnk-pathway
#8
Zhijie Lin, Yong-Guo Zhang, Yinglin Xia, Xiulong Xu, Xinan Jiao, Jun Sun
Salmonella pathogenesis studies to date have focused on Salmonella Typhimurium, the pathogenesis of a second major serotype, Salmonella Enteritidis, is poorly understood. Salmonella possess effector proteins that display biochemical activities and modulate the function of host. Here, we generated a deletion mutant of effector AvrA, S.E-AvrA-, and a plasmid-mediated complementary strain, S.E-AvrA-/pAvrA+ (S.E-AvrA+), in Salmonella Enteritidis. Using in vitro and in vivo infection models, we showed that AvrA stabilizes epithelial TJ proteins, such as ZO-1, in human intestinal epithelial cells...
November 15, 2016: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/27874211/characteristics-of-volatile-organic-compounds-produced-from-five-pathogenic-bacteria-by-headspace-solid-phase-micro-extraction-gas-chromatography-mass-spectrometry
#9
Juan Chen, Junni Tang, Hui Shi, Cheng Tang, Rong Zhang
The characteristics of volatile compounds from five different bacterial species, Escherichia coli O157:H7, Salmonella Enteritidis, Shigella flexneri, Staphylococcus aureus, and Listeria monocytogenes, growing, respectively, in trypticase soy broth were monitored by headspace solid-phase micro-extraction/gas chromatography-mass spectrometry. The results showed that most volatile organic compounds (VOCs) of five pathogens started to increase after the sixth to tenth hour. Methyl ketones and long chain alcohols were representative volatiles for three Gram-negative bacteria...
November 22, 2016: Journal of Basic Microbiology
https://www.readbyqxmd.com/read/27867387/neutrophils-discriminate-between-lipopolysaccharides-of-different-bacterial-sources-and-selectively-release-neutrophil-extracellular-traps
#10
Elmar Pieterse, Nils Rother, Cansu Yanginlar, Luuk B Hilbrands, Johan van der Vlag
The release of neutrophil extracellular traps (NETs), either during "suicidal" or "vital" NETosis, represents an important strategy of neutrophils to combat Gram-negative bacteria. Lipopolysaccharide (LPS), a major component of the outer membrane of Gram-negative bacteria, is a reported stimulus for NET formation. Although it is widely acknowledged that the structural diversity in LPS structures can elicit heterogeneous immune responses, species- and serotype-specific differences in the capacity of LPS to trigger NET formation have not yet been investigated...
2016: Frontiers in Immunology
https://www.readbyqxmd.com/read/27865096/salmonellosis-in-poland-in-2014
#11
Małgorzata Sadkowska-Todys, Mirosław P Czarkowski
OBJECTIVE: The aim of the study is to assess the epidemiological situation of salmonellosis in Poland in 2014 in comparison to the previous years. MATERIAL AND METHODS: The evaluation was based on the data from the bulletin “Infectious diseases and poisoning in Poland 2014”, information from the laboratories of sanitary-epidemiological stations and reports from the epidemiological investigations in outbreaks of salmonellosis, sent by the sanitary-epidemiological stations to the Department of Epidemiology, as well as the data from the Department of Demographic Studies of the Central Statistical Office...
2016: Przegla̧d Epidemiologiczny
https://www.readbyqxmd.com/read/27860367/multidrug-resistant-outbreak-associated-salmonella-strains-in-irrigation-water-from-the-metropolitan-region-chile
#12
M C Martínez, P Retamal, J F Rojas-Aedo, J Fernández, A Fernández, L Lapierre
Salmonella enterica (S. enterica) is the main cause of foodborne diseases in the Chilean population. With the aim of characterizing the presence of S. enterica in bodies of water, samples from 40 sources were obtained, including rivers and irrigation canals used by agricultural farms in the most populated regions of Chile. As result, 35 S. enterica isolates belonging to several serotypes were detected, with the highest frequency represented by Typhimurium and Enteritidis. All strains showed phenotypic antimicrobial resistance, and most of them were multiresistant to critically important antimicrobials...
November 12, 2016: Zoonoses and Public Health
https://www.readbyqxmd.com/read/27856572/complete-genome-sequences-of-three-siphoviridae-bacteriophages-infecting-salmonella-enterica-serovar-enteritidis
#13
Rubina Paradiso, Serena Lombardi, Maria Grazia Iodice, Marita Georgia Riccardi, Massimiliano Orsini, Sergio Bolletti Censi, Giorgio Galiero, Giorgia Borriello
Three bacteriophages, 118970_sal1, 118970_sal2, and 64795_sal3, were isolated from water buffalo feces in southern Italy, exhibiting lytic activity against Salmonella enterica serovar Enteritidis. These bacteriophages belong to the Siphoviridae family and have a 60,113-bp, 123,930-bp, and 48,094-bp double-stranded DNA (dsDNA) genome containing 72, 173, and 80 coding sequences (CDSs), respectively.
November 17, 2016: Genome Announcements
https://www.readbyqxmd.com/read/27845023/antimicrobial-activity-of-buttermilk-and-lactoferrin-peptide-extracts-on-poultry-pathogens
#14
Catherine Jean, Martine Boulianne, Michel Britten, Gilles Robitaille
Antibiotics are commonly used in poultry feed as growth promoters. This practice is questioned given the arising importance of antibiotic resistance. Antimicrobial peptides can be used as food additives for a potent alternative to synthetic or semi-synthetic antibiotics. The objective of this study was to develop a peptide production method based on membrane adsorption chromatography in order to produce extracts with antimicrobial activity against avian pathogens (Salmonella enterica var. Enteritidis, Salmonella enterica var...
November 2016: Journal of Dairy Research
https://www.readbyqxmd.com/read/27818944/an-unusual-case-of-salmonella-enteritidis-causing-pneumonia-septic-shock-and-multiple-organ-failure-in-an-immunocompetent-patient
#15
M L Thompson Bastin, N R Neville, R E Parsons, A H Flannery, S J Tennant, C A Johnson
Salmonella species are facultative intracellular pathogens that most frequently cause self-limiting gastrointestinal disease, often acquired through the ingestion of contaminated food. We report the case of a 33-year-old otherwise healthy, not overtly immunosuppressed, man who was transferred to our facility with the chief complaint of respiratory failure and septic shock. Computed tomography of the chest revealed multifocal pneumonia in both lungs. A bronchial alveolar lavage was performed in the right middle lobe and cultures predominantly grew Salmonella enterica serovar Enteritidis...
2016: IDCases
https://www.readbyqxmd.com/read/27812526/evaluation-and-selection-of-bacillus-species-based-on-enzyme-production-antimicrobial-activity-and-biofilm-synthesis-as-direct-fed-microbial-candidates-for-poultry
#16
Juan D Latorre, Xochitl Hernandez-Velasco, Ross E Wolfenden, Jose L Vicente, Amanda D Wolfenden, Anita Menconi, Lisa R Bielke, Billy M Hargis, Guillermo Tellez
Social concern about misuse of antibiotics as growth promoters (AGP) and generation of multidrug-resistant bacteria have restricted the dietary inclusion of antibiotics in livestock feed in several countries. Direct-fed microbials (DFM) are one of the multiple alternatives commonly evaluated as substitutes of AGP. Sporeformer bacteria from the genus Bacillus have been extensively investigated because of their extraordinary properties to form highly resistant endospores, produce antimicrobial compounds, and synthesize different exogenous enzymes...
2016: Frontiers in Veterinary Science
https://www.readbyqxmd.com/read/27811324/evaluation-of-3m-molecular-detection-system-and-ansr-pathogen-detection-system-for-rapid-detection-of-salmonella-from-egg-products
#17
L Hu, L M Ma, S Zheng, X He, H Wang, E W Brown, T S Hammack, G Zhang
Isothermal amplification assay is a novel simple detection technology that amplifies DNA with high speed, efficiency, and specificity under isothermal conditions. The objective of this study was to evaluate the effectiveness of the 3M Molecular Detection System (MDS) and ANSR Pathogen Detection System (PDS) for the detection of Salmonella in egg products as compared to the Food and Drug Administration's Bacteriological Analytical Manual (BAM) culture method and a modified culture method (3M MDS and ANSR PDS preferred method)...
November 2, 2016: Poultry Science
https://www.readbyqxmd.com/read/27810877/mannan-and-xylooligosaccharides-modulate-caecal-microbiota-and-expression-of-inflammatory-related-cytokines-and-reduce-caecal-salmonella-enteritidis-colonisation-in-young-chickens
#18
Mohsen Pourabedin, Qiaoling Chen, MingMing Yang, Xin Zhao
Salmonella Enteritidis is a pathogen, which can infect humans and chickens. This study was designed to address the impact of two potential prebiotics, mannanoligosaccharides (MOS) and xylooligosaccharides (XOS), on the caecal microbiota and expression of cytokines in chickens infected with S. Enteritidis. Newly hatched chicks were assigned to one of five groups: (1) uninfected control, (2) infected control, (3) infected + XOS, (4) infected + MOS and (5) infected + virginiamycin. The number of S. Enteritidis recovered from the caecum was significantly lower, by 1...
January 2017: FEMS Microbiology Ecology
https://www.readbyqxmd.com/read/27800493/prevalence-and-characteristics-of-salmonella-isolated-from-free-range-chickens-in-shandong-province-china
#19
Xiaonan Zhao, Yanxia Gao, Chaoqun Ye, Lingling Yang, Tao Wang, Weishan Chang
Compared with chickens raised in intensively managed breeding farms, free-range chickens in China are quite popular due to lower breeding density and less antibiotics usage. However, investigations about Salmonella enterica from free-range chickens are quite rare. The aim of the present study was to investigate prevalence and characteristics of Salmonella in free-range chickens in Shandong province, China. During the period of August and November 2015, 300 fresh fecal swabs from different broilers in three free-range chicken farms (100 samples per farm) were collected to isolate Salmonella, and then these isolates were subjected to serotyping, antibiotic sensitivity testing, enterobacterial repetitive intergenic consensus-polymerase chain reaction (ERIC-PCR), and multilocus sequence typing (ST)...
2016: BioMed Research International
https://www.readbyqxmd.com/read/27800430/in-vitro-evaluation-of-bacteriocin-like-inhibitory-substances-produced-by-lactic-acid-bacteria-isolated-during-traditional-sicilian-cheese-making
#20
Giusi Macaluso, Gerlando Fiorenza, Raimondo Gaglio, Isabella Mancuso, Maria Luisa Scatassa
Bacteriocins are antimicrobial proteins produced by bacteria that inhibit the growth of other bacteria with a bactericidal or bacteriostatic mode of action. Many lactic acid bacteria (LAB) produce a high diversity of different bacteriocins. Bacteriocinogenic LAB are generally recognised as safe (GRAS) and useful to control the frequent development of pathogens and spoilage microorganisms. For this reason they are commonly used as starter cultures in food fermentations. In this study, the authors describe the results of a screening on 699 LAB isolated from wooden vat surfaces, raw milk and traditional Sicilian cheeses, for the production of bacteriocin-like inhibitory substances, by comparing two alternative methods...
January 18, 2016: Italian Journal of Food Safety
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