Characterization of Salmonella enterica serovars recovered from meat products legally and illegally imported into the EU reveals the presence of multiresistant and AmpC-producing isolates

ConclusionThe results of this study demonstrate that meat products imported from third countries, both legally and illegally, can harbor multiresistantSalmonella enterica. Consequently, these imports could constitute a source for the dissemination of antimicrobial resistant isolates, including those resistant to third-generation cephalosporins and fluoroquinolones.
Source: Gut Pathogens - Category: Microbiology Source Type: research

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CONCLUSIONS This work calls for continuous surveillance for the emergence of antibiotic resistance and new clones in a geographical area.
Source: Revista da Sociedade Brasileira de Medicina Tropical - Category: Tropical Medicine Source Type: research
This study provides comprehensive evidence on using Bigelow model to predict the real-time microbial reduction of bacteria in a RF process.
Source: Food Control - Category: Food Science Source Type: research
We report the crystal structure of TSP2 in complex with a repeating unit of the O157 O-antigen. We demonstrate that according to the specificity of its tailspikes TSP2, TSP3, and TSP4, CBA120 can infect E. coli O157, O77, and O78, respectively. We also show that CBA120 infects Salmonella enterica serovar Minnesota and this host range expansion is likely due to the function of TSP1. Finally, we describe the assembly pathway and the architecture of the TSP1-TSP2-TSP3-TSP4 branched complex in CBA120 and its related ViI-like phages.Graphical abstract
Source: Journal of Molecular Biology - Category: Molecular Biology Source Type: research
In this study, the roles of PBD-2 in protecting against bacterial infection were further investigated. The biochemical indexes of the blood sample, body weights, histological morphologies and weights of the organs of TG mice expressing PBD-2 were measured. Results confirmed that these mice showed normal physiological features. An assay of Salmonella Typhimurium infection was conducted on wild-type (WT) and TG mice. The TG mice possessed higher survival rate, less body weight loss and pathological changes and smaller recovery rates of bacteria after infection with Salmonella Typhimurium. The in vitro synthetic PBD-2 and the...
Source: Frontiers in Immunology - Category: Allergy & Immunology Source Type: research
Publication date: 16 July 2019Source: Cell Reports, Volume 28, Issue 3Author(s): Dan Xiong, Li Song, Shizhong Geng, Yang Jiao, Xiaohui Zhou, Hongqin Song, Xilong Kang, Yi Zhou, Xiulong Xu, Jun Sun, Zhiming Pan, Xinan JiaoSummaryToll-like receptors (TLRs) activate innate immunity via interactions between their Toll/interleukin-1 (IL-1) receptor (TIR) domain and downstream adaptor proteins. Here we report that Salmonella Enteritidis produces a secreted protein (TcpS) that contains both a TIR domain and a coiled-coil domain. TcpS blocks MyD88- and TRIF-mediated TLR signaling, inhibits inflammatory responses, and promotes bact...
Source: Cell Reports - Category: Cytology Source Type: research
Publication date: Available online 17 July 2019Source: LWTAuthor(s): Jeong Hyeon Lee, Kyung Bin Song, Eun Ji Choi, Hong Kyeong Kim, Hae Woong Park, Ho Hyun ChunAbstractWe evaluated the efficiency of high hydrostatic pressure (HHP, 100–600 MPa) and 5% red ginseng concentrate (RGC) supplementation in inactivating foodborne pathogens and the impacts of treatment on the quality of kimchi sauce. Listeria monocytogenes and Staphylococcus aureus decreased by 4.02 log CFU/g with increasing HHP intensity, in kimchi sauces supplemented with or without RGC. In addition, Escherichia coli O157:H7 and Salmonella Typhimurium decr...
Source: LWT Food Science and Technology - Category: Food Science Source Type: research
by Chisomo L. Msefula, Franziska Olgemoeller, Ndaru Jambo, Dalitso Segula, Trinh Van Tan, Tonney S. Nyirenda, Wilfred Nedi, Neil Kennedy, Matthew Graham, Marc Y. R. Henrion, Stephen Baker, Nicholas Feasey, Melita Gordon, Robert S. Heyderman Typhoid fever is endemic across sub-Saharan Africa. However, estimates of the burden of typhoid are undermined by insufficient blood volumes and lack of sensitivity of blood culture. Here, we aimed to address this limitation by exploiting pre-enrichment culture followed by PCR, alongside routine b lood culture to improve typhoid case detection. We carried out a prospective diagnostic c...
Source: PLoS Neglected Tropical Diseases - Category: Tropical Medicine Authors: Source Type: research
Publication date: Available online 15 July 2019Source: Carbohydrate PolymersAuthor(s): Osama M. Sharaf, Mamdouh S. Al-Gamal, Gamal A. Ibrahim, Nadia M. Dabiza, Salem S. Salem, Mohamed F. El-ssayad, Ahmed M. YoussefAbstractThis research attempted to inspect the contribution of lactic acid bacteria (LAB) with nanoparticle application in antimicrobial enhancement. Seven lactic acid cultures-free supernatants (CFSs) in both free and nanoparticles-loaded states were examined against seven foodborne microorganisms. Lactobacillus helveticus followed by Lactobacillus Plantarum possessed considerable antimicrobial activity. Headspa...
Source: Carbohydrate Polymers - Category: Biomedical Science Source Type: research
This study also investigated the genomic environment of resistance genes on mobile genetic elements and chromosomal DNA. An ampicillin and streptomycin resistant S. Infantis isolate in this study harbored a β-lactamase (blaTEM-1), and two streptomycin resistance conferring genes (strA and strB) on a class 1 integron mobilized on a large conjugative plasmid. This plasmid also harbored two arsenic resistance gene cassettes. The arsenic resistance cassette, arsRCDAB, was also observed in two S. Singapore isolates with high tolerance to arsenate. A nalidixic acid resistant S. Typhimurium isolate was found to possess a mut...
Source: Frontiers in Microbiology - Category: Microbiology Source Type: research
syl D Abstract Turtoises are a great puzzle when it comes to their bacterial flora, the composition and structure of which are still unknown in details. Its component which has been best described so far is Salmonella spp., presumably due to the threat of reptile-associated salmonellosis in humans. This investigation tried to assess and characterize intestinal bacterial flora of imported tortoises found dead during quarantine. Most of the animals carried various serovars of Salmonella showing no antimicrobial resistance. Presence of multiresistant Escherichia coli was possibly a result of industrial breeding and h...
Source: Comparative immunology, microbiology and infectious diseases. - Category: Allergy & Immunology Authors: Tags: Comp Immunol Microbiol Infect Dis Source Type: research
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