pas22(5).pdf (Objet application/pdf) BMC VETERINARY RESEARCH 08/04/17 Characterization and virulence clustering analysis of extraintestinal pathogenic Escherichia coli isolated from swine in China The importance of ExPEC has been recognized, and many ExPEC related diseases in cows, humans and food have been reported in the North America and Europe. In China, ExPEC has become a frequent pathogen in the swine industry [13, 14]. However, understanding of the pathogenesis and epidemiology of porcine ExPEC is still limited. A single virulence factor does not determine bacterial pathogenicity. MLST analysis can provide other information besides phylogenetic relationships . A study by Tan et al. showed that fimH, traT and iutA were highly prevalent in porcine ExPEC isolates, which is in consistent with our results, but the prevalence of fyuA, cnf1, kpsMTII, and iroN differ between our study and theirs; the focG gene was not detected in any isolates in this study, which is similar to Tan’s research .
VETERINARY WORLD 18/08/17 Presence and characterization of Escherichia coli virulence genes isolated from diseased pigs in the central region of Argentina Research (Published online: 18-08-2017) 18. Presence and characterization of Escherichia coli virulence genes isolated from diseased pigs in the central region of Argentina Fernando A. Veterinary World, 10(8): 939-945 Fernando A. Gabriela Bessone: Animal Health Group, INTA - Estacion Experimental Agropecuaria Marcos Juarez, Postal Code 2580, Cordoba, Argentina. Sebastian Marini: Animal Health Group, INTA - Estacion Experimental Agropecuaria Marcos Juarez, Postal Code 2580, Cordoba, Argentina. Maria B. Fabrisio E. Gustavo Zielinski: Animal Health Group, INTA - Estacion Experimental Agropecuaria Marcos Juarez, Postal Code 2580, Cordoba, Argentina. doi: 10.14202/vetworld.2017.939-945 Share this article on [Facebook] [LinkedIn] Article history: Received: 03-04-2017, Accepted: 13-07-2017, Published online: 18-08-2017 Corresponding author: Fernando A. E-mail: firstname.lastname@example.org Abstract Materials and Methods: Intensive pig farms from the central region of Argentina were sampled. 1. 2. 3.
BMC Microbiol. 2016 Sep 6;16(1):205. Modeling the growth dynamics of multiple Escherichia coli strains in the pig intestine following intramuscular ampicillin treatment. Antimicrobial resistance threatens the efficacy of available antibacterial drugs. High resistance levels are directly linked with excessive and routine antimicrobial use, and antimicrobial exposure in food production animals contributes significantly to increased antimicrobial resistance . Limiting the use of antimicrobials can reduce the prevalence of resistance. However, treatment of production animals cannot be avoided for animal welfare and economic purposes. It is therefore important to find ways to reduce resistance, while maintaining the capacity to treat diseased animals. During treatment of infection, antimicrobial pressure affects non-target commensal bacteria. A possible way to reduce antimicrobial use is to treat animals individually by injection treatment, rather than using flock treatment, and this is commonly used for especially respiratory and systemic diseases in the pig industry.
ITALIAN JOURNAL OF FOOD SAFETY - 2017 - Shiga toxin-producing Escherichia coli in slaughtered pigs and pork products Abstract During the years 2015-2016, 83 faecal samples were collected at slaughter from pigs reared in farms located in Central- Northern Italy. During the years 2014-2016 a total of 562 pork products [465 not-ready-to-eat (NRTE) and 97 ready-to-eat (RTE) products] were collected from retail outlets, large retailers and processing plants. The samples were analysed according to ISO TS 13136:2012. Out of 83 swine faecal samples, 77 (92.8%) resulted stx-positive by real time polymerase chain reaction (PCR), 5 stx2+ and 1 stx1+ Shiga toxin-producing Escherichia coli (STEC) strains were isolated. Among the 465 NRTE samples, 65 (14.0%) resulted stx-positive by real time PCR and 7 stx2+ STEC strains were isolated. Keywords Shiga toxin-producing Escherichia coli; Pig; Pork meat; Pork products
ITALIAN JOURNAL OF FOOD SAFETY - 2015 - Role of verocytotoxigenic Escherichia coli in the swine production chain Abstract Shiga toxin-producing Escherichia coli (STEC) can cause severe clinical diseases in humans, such as haemorrhagic colitis (HC) and haemolytic-uremic syndrome (HUS). Although ruminants, primarily cattle, have been suggested as typical reservoirs of STEC, many food products of other origins, including pork products, have been confirmed as vehicles for STEC transmission. Keywords Escherichia coli; STEC; Pig; Stx2e; PCR
BMC VETERINARY RESEARCH 05/12/18 Intestinal microbiota mediates Enterotoxigenic Escherichia coli-induced diarrhea in piglets Diarrhea and malnutrition are both associated with dysbiosis of the intestinal microbiota [19, 35]. ETEC is an important cause of diarrhea in humans and weaned piglets; however, the role of gut microbiota in ETEC-induced diarrhea is unknown. In current study, with different analysis methods, we found that diarrheal piglets have a dysbiosis of the intestinal microbiota, especially a higher percentage of Lactococcus in the jejunum, and lower Bacteroidetes: Firmicutes ratio in the jejunum and feces. Other interesting findings are that diarrheal piglets have higher percentage of Escherichia-Shigella and lower of Prevotella in the feces, and lower microbiota diversity in the jejunum and feces. ETEC-induced diarrhea is associated with a decrease in the Bacteroidetes:Firmicutes ratio. It is unknown why a lower Bacteroidetes:Firmicutes ratio is involved in ETEC-induced diarrhea.
PAYSAN BRETON 05/03/19 La shigatoxine agit-elle en sourdine ? (porcins) La shigatoxine, produite par une E. Coli, responsable de la maladie de l’œdème, peut-elle être présente en élevage sans symptôme de la pathologie ? Si oui, affecte-t-elle les performances ? Une étude réalisée par le laboratoire IDT Biologika, chez des éleveurs du groupement Prestor, en 2017, a montré les bénéfices d’une vaccination contre la maladie de l’œdème chez les porcelets. Une nouvelle étude a été réalisée en 2018, avec le concours du groupement Triskalia pour répondre à ces questions. 33 élevages ont été sélectionnés, qui ne présentaient pas de signes cliniques de la maladie et qui n’étaient pas vaccinés. MICROORGANISMS 06/08/21 The Pheno- and Genotypic Characterization of Porcine Escherichia coli Isolates MDPI and ACS Style Bernreiter-Hofer, T.; Schwarz, L.; Müller, E.; Cabal-Rosel, A.; Korus, M.; Misic, D.; Frankenfeld, K.; Abraham, K.; Grünzweil, O.; Weiss, A.; Feßler, A.T.; Allerberger, F.; Schwarz, S.; Szostak, M.P.; Ruppitsch, W.; Ladinig, A.; Spergser, J.; Braun, S.D.; Monecke, S.; Ehricht, R.; Loncaric, I. The Pheno- and Genotypic Characterization of Porcine Escherichia coli Isolates. Microorganisms 2021, 9, 1676. AMA Style Bernreiter-Hofer T, Schwarz L, Müller E, Cabal-Rosel A, Korus M, Misic D, Frankenfeld K, Abraham K, Grünzweil O, Weiss A, Feßler AT, Allerberger F, Schwarz S, Szostak MP, Ruppitsch W, Ladinig A, Spergser J, Braun SD, Monecke S, Ehricht R, Loncaric I. Chicago/Turabian Style Bernreiter-Hofer, Tanja, Lukas Schwarz, Elke Müller, Adriana Cabal-Rosel, Maciej Korus, Dusan Misic, Katrin Frankenfeld, Kerstin Abraham, Olivia Grünzweil, Astrid Weiss, Andrea T.
FRONT. VET. SCI. 05/10/21 Surveillance and Reduction Control of Escherichia coli and Diarrheagenic E. coli During the Pig Slaughtering Process in China Introduction In recent years, foodborne pathogenic infections have occurred frequently, which has a significant impact on human health and economy, and has become a major public health problem worldwide (1). Foodborne pathogens are the primary cause of foodborne diseases. Foodborne diseases caused by foodborne pathogens have been a major threat to food safety (2–4). With the increase in demand for fresh livestock and poultry products, an increasing amount of attention has been paid to food safety. Previous studies have shown that the number of outbreaks associated with fresh products increased from 0.7% in the 1970s to 6% in the 1990s in the United States (5, 6). According to reports, common pathogenic bacteria include: Salmonella, Shigella, diarrheagenic E. coli, Campylobacter, Yersinia enterocolitica, Clostridium perfringens, Vibrio and Listeria monocytogenes, etc (1). Materials and Methods Investigation of the Sanitary Conditions of Different Types of Slaughterhouses Sampling Points 1.