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https://www.readbyqxmd.com/read/28433796/genetic-diversity-and-virulence-genes-of-salmonella-enterica-subspecies-enterica-serotype-enteritidis-isolated-from-meats-and-eggs
#1
Fatemeh Fardsanei, Mohammad Mehdi Soltan Dallal, Masoumeh Douraghi, Taghi Zahraei Salehi, Mahmood Mahmoodi, Hamed Memariani, Farhad Nikkhahi
Salmonella enterica subspecies enterica serotype Enteritidis (S. Enteritidis) is one of the leading causes of food-borne gastroenteritis associated with the consumption of contaminated food products of animal origin. Little is known about the genetic diversity and virulence content of S. Enteritidis isolated from poultry meats and eggs in Iran. A total of 34 S. Enteritidis strains were collected from different food sources of animal origin in Tehran from May 2015 to July 2016. All of the S. Enteritidis strains were serotyped, antimicrobial susceptibility tested, and characterized for virulence genes...
April 19, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28433723/elimination-of-the-cryptic-plasmid-in-leuconostoc-citreum-by-crispr-cas9-system
#2
Ye-Ji Jang, Seung-Oh Seo, Seul-Ah Kim, Ling Li, Tae-Jip Kim, Sun Chang Kim, Yong-Su Jin, Nam Soo Han
Leuconostoc spp. are important lactic acid bacteria for the fermentation of foods. In particular, L. citreum strains isolated from various foods have been used as host strains for genetic and metabolic engineering studies. In order to develop a food-grade genetic engineering system, L. citreum CB2567 was isolated from Kimchi. However, the isolated bacterium contained a cryptic plasmid which was difficult to eliminate. As the existence of the plasmid might hinder strain engineering, we eliminated the plasmid using an RNA-guided DNA endonuclease CRISPR/Cas9 system...
April 19, 2017: Journal of Biotechnology
https://www.readbyqxmd.com/read/28432048/solithromycin-a-novel-ketolide-antibiotic
#3
Michael J Buege, Jack E Brown, Samuel L Aitken
PURPOSE: The pharmacology, pharmacokinetics, pharmacodynamics, antimicrobial activity, clinical safety, and current regulatory status of solithromycin are reviewed. SUMMARY: Solithromycin is a novel ketolide antibiotic developed for the treatment of community-acquired bacterial pneumonia (CABP). Its pharmacologic, pharmacokinetic, and pharmacodynamic properties provide activity against a broad range of intracellular organisms, including retained activity against pathogens displaying various mechanisms of macrolide resistance...
April 21, 2017: American Journal of Health-system Pharmacy: AJHP
https://www.readbyqxmd.com/read/28429871/potentiation-of-antibiotic-against-psedomonas-aeruginosa-biofilm-a-study-with-plumbagin-and-gentamicin
#4
Priya Gupta, Arpita Sarkar, Padmani Sandhu, Akshay Daware, Manash C Das, Yusuf Akhter, Surajit Bhattacharjee
AIM: Pseudomonas aeruginosa is one of the fatal biofilm forming pathogens which pose to be a problem in clinical infections, contamination of food and marine ecosystems. In this report a napthoquinone - Plumbagin has been explored for its antimicrobial (antibacterial and antibiofilm) activity against P. aeruginosa biofilm. The ability of Plumbagin to enhance the bioactivity of a known broad spectrum antibiotic was further assayed by combining the sub-MIC doses of Plumbagin with sub-MIC doses of Gentamicin against P...
April 21, 2017: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/28427828/a-combined-clostridium-perfringens-trueperella-pyogenes-inactivated-vaccine-induces-complete-immunoprotection-in-a-mouse-model
#5
Wenlong Zhang, Pu Wang, Bing Wang, Bo Ma, Junwei Wang
Clostridium perfringens (C. perfringens) and Trueperella pyogenes (T. pyogenes) are two bacterial pathogens frequently associated with wound infections and following lethal complications in livestock. However, prudent use of antimicrobial agents is highly required given the emergence of multidrug-resistant strains of both bacteria and need for food safety. In the current study, a combined vaccine, composed of inactivated C. perfringens and T. pyogenes, was prepared. The amount of formaldehyde being used to inactivate two bacteria was optimized to retain the immunogenicity of antigens...
April 17, 2017: Biologicals: Journal of the International Association of Biological Standardization
https://www.readbyqxmd.com/read/28414519/effect-of-a-food-supplement-containing-l-methionine-on-urinary-tract-infections-in-pregnancy-a-prospective-multicenter-observational-study
#6
Mario Passaro, Giampaolo Mainini, Francesco Ambrosio, Raimondo Sgambato, Giancarlo Balbi
OBJECTIVE: Adjuvants or alternatives to antibiotics in urinary tract infections (UTIs) during pregnancy seem advisable because of possible fetal stress. The present study assessed the effectiveness of a food supplement containing L-methionine and Hibiscus sabdariffa L. and Boswellia serrata Roxb. extracts as a treatment for symptomatic UTIs in pregnancy. DESIGN: Pregnant patients with symptomatic cystitis were screened for UTIs in three different clinical centers...
April 17, 2017: Journal of Alternative and Complementary Medicine: Research on Paradigm, Practice, and Policy
https://www.readbyqxmd.com/read/28407482/salmonella-typhimurium-diarrhea-reveals-basic-principles-of-enteropathogen-infection-and-disease-promoted-dna-exchange
#7
REVIEW
Sandra Y Wotzka, Bidong D Nguyen, Wolf-Dietrich Hardt
Despite decades of research, efficient therapies for most enteropathogenic bacteria are still lacking. In this review, we focus on Salmonella enterica Typhimurium (S. Typhimurium), a frequent cause of acute, self-limiting food-borne diarrhea and a model that has revealed key principles of enteropathogen infection. We review the steps of gut infection and the mucosal innate-immune defenses limiting pathogen burdens, and we discuss how inflammation boosts gut luminal S. Typhimurium growth. We also discuss how S...
April 12, 2017: Cell Host & Microbe
https://www.readbyqxmd.com/read/28406359/enantioselective-analysis-of-chloramphenicol-residues-in-honey-samples-by-chiral-lc-msms-and-results-of-a-honey-survey
#8
Gerhard G Rimkus, Dirk Hoffmann
Chloramphenicol (CAP) is a broad-spectrum antibiotic used widely both in human and in veterinary medication. Since 1994 CAP is not authorised anymore for use in food-producing animals in the EU due to several adverse effects. A minimum required performance level (MRPL) 0.3 µg kg(-1) was established in 2003. CAP molecule contains two asymmetric centres thus in total four para-CAP stereoisomers exist. Only the RR-CAP enantiomer is bioactive having significant antimicrobial activity. For the first time a chiral LC/MSMS method is reported to identify and quantify the four CAP enantiomers at residue levels in honey samples...
April 13, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28403649/a-survey-of-probiotic-use-practices-among-patients-at-a-tertiary-medical-centre
#9
K Draper, C Ley, J Parsonnet
Probiotic use has skyrocketed in recent years. Little is known, however, about patient knowledge and practices regarding probiotic use, especially in the context of antibiotic use. An invitation to complete a short, anonymous, electronic survey was sent by email to 965 patients at a tertiary medical centre in California who had agreed to be contacted for participation in research studies. Questions were asked about both probiotic and antibiotic use in the prior three months. Of 333 survey respondents, 55% had recently used probiotics, including food products and/or supplements (90 and 60% of probiotic users, respectively)...
April 13, 2017: Beneficial Microbes
https://www.readbyqxmd.com/read/28402712/investigation-of-a-staphylococcal-food-poisoning-outbreak-from-a-chantilly-cream-dessert-in-umbria-italy
#10
Laura Ercoli, Silvia Gallina, Yacine Nia, Frédéric Auvray, Sara Primavilla, Fabrizia Guidi, Benedetta Pierucci, Catia Graziotti, Lucia Decastelli, Stefania Scuota
On August 28, 2015, a staphylococcal food poisoning outbreak occurred in Umbria, Italy, affecting 24 of the 42 customers who had dinner at a local restaurant. About 3 h after ingesting a variety of foods, the customers manifested gastrointestinal symptoms. Within 24 h of notification from the hospital emergency department, Sanitary Inspectors of the local Public Health Unit performed an epidemiological investigation. A retrospective cohort study was conducted among the customers. Food and environmental samples were collected...
April 12, 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/28402186/inhibition-of-hafnia-alvei-h4-biofilm-formation-by-the-food-additive-dihydrocoumarin
#11
Hong Man Hou, Feng Jiang, Gong Liang Zhang, Jia Y Wang, Ya H Zhu, Xin Y Liu
Quorum sensing (QS) is an intercellular signaling and gene regulatory mechanism that is implicated in food spoilage caused by bacteria. Thus, blocking QS may suppress QS-controlled phenotypes of these bacteria that are responsible for food spoilage. Biofilm formation is closely related to bacterial infection, and it is also a major mechanism responsible for the increased resistance of biofilm-associated bacteria to antimicrobial drugs. Food spoilage and biofilm formation caused by food-related bacteria have posed a significant problem for the food industry...
April 12, 2017: Journal of Food Protection
https://www.readbyqxmd.com/read/28402029/magnetic-solid-phase-extraction-based-on-carbon-nanotubes-for-the-determination-of-polyether-antibiotics-and-s-triazine-drug-residues-in-animal-food-with-lc-ms
#12
Xiaoxing Liu, Shuyu Xie, Tengteng Ni, Dongmei Chen, Xu Wang, Yuanhu Pan, Yulian Wang, Lingli Huang, Guyue Cheng, Wei Qu, Zhenli Liu, Yanfei Tao, Zonghui Yuan
Carbon nanotubes-magnetic nanoparticles, comprising ferroferric oxide nanoparticles and carbon nanotubes, were prepared through a simple one-step synthesis method and subsequently applied to magnetic solid-phase extraction for the determination of polyether antibiotic and s-triazine drug residues in animal food coupled with liquid chromatography with tandem mass spectrometry. The nanocomposites were characterized by transmission electron microscopy, X-ray diffraction, and vibrating sample magnetometry. The components within the nanocomposites endowed the material with high extraction performance and manipulative convenience...
April 12, 2017: Journal of Separation Science
https://www.readbyqxmd.com/read/28400212/susceptibility-to-18-drugs-and-multidrug-resistance-of-arcobacter-isolates-from-different-sources-within-the-czech-republic
#13
David Šilha, Marcela Pejchalová, Lucie Šilhová
OBJECTIVES: Arcobacter spp. are considered to be potential foodborne pathogens, and consumption of contaminated food containing these bacteria could endanger human and animal health. Arcobacter butzleri and Arcobacter cryaerophilus are the species most frequently isolated from food of animal origin and from other samples. The aim of this study was to evaluate the susceptibility of arcobacters isolated in the Czech Republic. No information about antibiotic susceptibility and multidrug resistance of arcobacters isolated in the Czech Republic is available in the literature before now...
April 8, 2017: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/28400021/east-and-west-african-milk-products-are-reservoirs-for-human-and-livestock-associated-staphylococcus-aureus
#14
Christoph Jans, Axel Merz, Sophia Johler, Mario Younan, Sabine A Tanner, Dasel Wambua Mulwa Kaindi, John Wangoh, Bassirou Bonfoh, Leo Meile, Taurai Tasara
Staphylococcus aureus frequently isolated from milk products in sub-Saharan Africa (SSA) is a major pathogen responsible for food intoxication, human and animal diseases. SSA hospital-derived strains are well studied but data on the population structure of foodborne S. aureus required to identify possible staphylococcal food poisoning sources is lacking. Therefore, the aim was to assess the population genetic structure, virulence and antibiotic resistance genes associated with milk-derived S. aureus isolates from Côte d'Ivoire, Kenya and Somalia through spa-typing, MLST, and DNA microarray analysis...
August 2017: Food Microbiology
https://www.readbyqxmd.com/read/28400014/isolation-molecular-identification-and-quinolone-susceptibility-testing-of-arcobacter-spp-isolated-from-fresh-vegetables-in-spain
#15
Ana González, Isidro Favián Bayas Morejón, María Antonia Ferrús
Some species of the Arcobacter genus are considered emerging foodborne and waterborne enteropathogens. However, the presence of Arcobacter spp. in vegetables very little is known, because most studies have focused on foods of animal origin. On the other hand, quinolones are considered as first-line drugs for the treatment of infection by campylobacteria in human patients, but few data are currently available about the resistance levels to these antibiotics among Arcobacter species. Therefore, the aim of this study was to investigate the presence and diversity of arcobacters isolated from fresh vegetables such as lettuces, spinaches, chards and cabbages...
August 2017: Food Microbiology
https://www.readbyqxmd.com/read/28400006/microbiological-quality-of-selected-ready-to-eat-leaf-vegetables-sprouts-and-non-pasteurized-fresh-fruit-vegetable-juices-including-the-presence-of-cronobacter-spp
#16
Anna Berthold-Pluta, Monika Garbowska, Ilona Stefańska, Antoni Pluta
Bacteria of the genus Cronobacter are emerging food-borne pathogens. Foods contaminated with Cronobacter spp. may pose a risk to infants or adults with suppressed immunity. This study was aimed at determining the microbiological quality of ready-to-eat (RTE) plant-origin food products available on the Polish market with special emphasis on the prevalence of Cronobacter genus bacteria. Analyses were carried out on 60 samples of commercial RTE type plant-origin food products, including: leaf vegetables (20 samples), sprouts (20 samples) and non-pasteurized vegetable, fruit and fruit-vegetable juices (20 samples)...
August 2017: Food Microbiology
https://www.readbyqxmd.com/read/28389536/whole-genome-sequencing-of-drug-resistant-salmonella-enterica-isolated-from-dairy-cattle-and-humans-in-new-york-and-washington-states-reveals-source-and-geographic-associations
#17
Laura M Carroll, Martin Wiedmann, Henk den Bakker, Julie Siler, Steven Warchocki, David Kent, Svetlana Lyalina, Margaret Davis, William Sischo, Thomas Besser, Lorin D Warnick, Richard V Pereira
Multidrug-resistant (MDR) Salmonella enterica can be spread from cattle to humans through direct contact with animals shedding Salmonella, as well as through the food chain, making MDR Salmonella a serious threat to human health. The objective of this study was to use whole-genome sequencing to compare antimicrobial-resistant (AMR) S. Typhimurium, Newport, and Dublin isolated from dairy cattle and humans in Washington state and New York state at a genotypic and phenotypic level. A total of 90 isolates were selected for the study (37 Typhimurium, 32 Newport, 21 Dublin)...
April 7, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28389354/treating-complicated-carbapenem-resistant-enterobacteriaceae-infections-with-ceftazidime-avibactam-a-retrospective-study-with-molecular-strain-characterisation
#18
Fiorella Krapp, Jennifer L Grant, Sarah H Sutton, Egon A Ozer, Viktorija O Barr
Ceftazidime/avibactam (CAZ/AVI) is the first antimicrobial agent with activity against carbapenem-resistant Enterobacteriaceae (CRE) approved by the US Food and Drug Administration (FDA). Notably, human clinical outcome data for this indication are limited. Therefore, a retrospective study was performed to evaluate the clinical outcomes and bacterial genomic characteristics of patients hospitalised at a tertiary medical centre with CRE infections treated for the first time with CAZ/AVI. From a total of 44 patients with CRE infections, 6 patients were treated with CAZ/AVI...
April 4, 2017: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/28384209/analyses-of-the-probiotic-property-and-stress-resistance-related-genes-of-lactococcus-lactis-subsp-lactis-ncdo-2118-through-comparative-genomics-and-in-vitro-assays
#19
Letícia C Oliveira, Tessália D L Saraiva, Wanderson M Silva, Ulisses P Pereira, Bruno C Campos, Leandro J Benevides, Flávia S Rocha, Henrique C P Figueiredo, Vasco Azevedo, Siomar C Soares
Lactococcus lactis subsp. lactis NCDO 2118 was recently reported to alleviate colitis symptoms via its anti-inflammatory and immunomodulatory activities, which are exerted by exported proteins that are not produced by L. lactis subsp. lactis IL1403. Here, we used in vitro and in silico approaches to characterize the genomic structure, the safety aspects, and the immunomodulatory activity of this strain. Through comparative genomics, we identified genomic islands, phage regions, bile salt and acid stress resistance genes, bacteriocins, adhesion-related and antibiotic resistance genes, and genes encoding proteins that are putatively secreted, expressed in vitro and absent from IL1403...
2017: PloS One
https://www.readbyqxmd.com/read/28382572/current-clinical-trials-on-the-use-of-ceftaroline-in-the-pediatric-population
#20
REVIEW
Adam Corey, Tsz-Yin So
The rate of antibiotic resistance in children continues to rise requiring the use of new antibiotics. Ceftaroline fosamil, a newer-generation cephalosporin, was recently approved for the treatment of acute bacterial skin and skin structure infections and community-acquired bacterial pneumonia in children aged >2 months. Ceftaroline provides coverage against staphylococcal and streptococcal infections, including methicillin-resistant Staphylococcus aureus and penicillin-resistant Streptococcus pneumoniae...
April 5, 2017: Clinical Drug Investigation
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