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Jimena Soledad Cadona, Ana Victoria Bustamante, Juliana González, Andrea Mariel Sanso
We wish to make the following correction to the paper by Soledad-Cadona et al.[...].
April 20, 2018: Genes
Andrea Osimani, Vesna Milanović, Cristiana Garofalo, Federica Cardinali, Andrea Roncolini, Riccardo Sabbatini, Francesca De Filippis, Danilo Ercolini, Claudia Gabucci, Annalisa Petruzzelli, Franco Tonucci, Francesca Clementi, Lucia Aquilanti
The present study aimed to identify the microbiota present in six species of processed edible insects produced in Thailand and marketed worldwide via the internet, namely, giant water bugs (Belostoma lutarium), black ants (Polyrhachis), winged termites (alates, Termitoidae), rhino beetles (Hyboschema contractum), mole crickets (Gryllotalpidae), and silkworm pupae (Bombyx mori). For each species, two samples of boiled, dried and salted insects were purchased. The microbial DNA was extracted from the insect samples and subjected to polymerase chain reaction-denaturing gradient gel electrophoresis (PCR-DGGE), high-throughput sequencing and qualitative real-time PCR assays...
April 11, 2018: International Journal of Food Microbiology
Kai Tian, Xiaowei Chen, Binquan Luan, Prashant Singh, Zhiyu Yang, Kent S Gates, Mengshi Lin, Azlin Mustapha, Li-Qun Gu
Accurate and rapid detection of single-nucleotide polymorphism (SNP) in pathogenic mutants is crucial for food safety regulation, disease diagnostics and many other fields. Current detection methods involve laborious sample preparations and expensive characterizations. Here, we investigated a nanopore-based single-molecule approach, facilitated by the locked nucleic acid (LNA) technique, to accurately determine SNPs for detection of Shiga toxin producing Escherichia coli (STEC) O157:H7 serotype, and cancer-derived EGFR L858R and KRAS G12D driver mutations...
April 17, 2018: ACS Nano
Sreepriya Prakasan, Parmanand Prabhakar, Manjusha Lekshmi, Sanath Kumar, Binaya Bhusan Nayak
Background and Aim: Shiga toxin-producing Escherichia coli (STEC) are important pathogens of global significance. STEC are responsible for numerous food-borne outbreaks worldwide and their presence in food is a potential health hazard. The objective of the present study was to determine the incidence of STEC in fresh seafood in Mumbai, India, and to characterize STEC with respect to their virulence determinants. Materials and Methods: A total of 368 E. coli were isolated from 39 fresh seafood samples (18 finfish and 21 shellfish) using culture-based methods...
March 2018: Veterinary World
C Sethulekshmi, C Latha, C J Anu
Aim: The objective of the study was to detect Shiga toxin-producing Escherichia coli (STEC) and develop a quantitative polymerase chain reaction (qPCR) assay to quantify the bacterial DNA present in different food matrices. Materials and Methods: A total of 758 samples were collected during a period from January 2015 to December 2016 from Kozhikode, Thrissur, and Alappuzha districts of Kerala. The samples consisted of raw milk (135), pasteurized milk (100), beef (132), buffalo meat (130), chevon (104), beef kheema (115), and beef sausage (42)...
February 2018: Veterinary World
Małgorzata Cichoń, Katarzyna Mizia-Stec, Romuald Wojnicz, Piotr Kukla, Magdalena Drożdż
No abstract text is available yet for this article.
April 15, 2018: Polish Archives of Internal Medicine
Marcelo Signorini, Magdalena Costa, David Teitelbaum, Viviana Restovich, Hebe Brasesco, Diego García, Valeria Superno, Sandra Petroli, Mariana Bruzzone, Victor Arduini, Mónica Vanzini, Adriana Sucari, Germán Suberbie, Turina Maricel, Ricardo Rodríguez, Gerardo A Leotta
In Argentina, Shiga toxin producing Escherichia coli (STEC) serogroups O157, O26, O103, O111, O145 and O121 are adulterant in ground beef. In other countries, the zero-tolerance approach to all STEC is implemented for chilled beef. Argentinean abattoirs are interested in implementing effective interventions against STEC on carcasses. Pre-rigor beef carcasses were used to determine whether nine antimicrobial strategies effectively reduced aerobic plate, coliform and E. coli counts and stx and eae gene prevalence...
April 8, 2018: Meat Science
Sarah-Jo Paquette, Kim Stanford, James Thomas, Tim Reuter
Often Escherichia coli are harmless and/or beneficial bacteria inhabiting the gastrointestinal tract of livestock and humans. However, Shiga toxin-producing E. coli (STEC) have been linked to human disease. Cattle are the primary reservoir for STEC and STEC "super-shedders" are considered to be a major contributor in animal to animal transmission. Among STEC, O157:H7 is the most recognized serotype, but in recent years, non-O157 STEC have been increasingly linked to human disease. In Argentina and Germany, O178 is considered an emerging pathogen...
2018: PloS One
Pushpinder Kaur Litt, Joyjit Saha, Divya Jaroni
Non-O157 Shiga toxigenic Escherichia coli (STEC) are an important group of foodborne pathogens, implicated in several outbreaks and recalls in the past 2 decades. It is therefore crucial to devise effective control strategies against these pathogens. Bacteriophages present an attractive alternative to conventional pathogen control methods in the food industry. Bacteriophages, targeting non-O157 STEC (O26, O45, O103, O111, O121, O145), were isolated from beef cattle operations in Oklahoma. Their host range and lytic ability were determined against several ( n = 21) non-O157 STEC isolates, by using the spot-on-lawn assay...
April 6, 2018: Journal of Food Protection
Ryan S McKee, Phillip I Tarr, Dennis J Dietzen, Rachit Chawla, David Schnadower
Objectives: Children with acute bloody diarrhea are at risk of being infected with Shiga toxin-producing Escherichia coli (STEC) and of progression to hemolytic uremic syndrome. Our objective was to identify clinical and laboratory factors associated with STEC infection in children who present with acute bloody diarrhea. Methods: We performed a prospective cohort study of consecutive children younger than 18 years who presented with acute (<2-week duration) bloody diarrhea between August 1, 2013, and August 1, 2014...
April 2, 2018: Journal of the Pediatric Infectious Diseases Society
Michael B Cooley, Diana Carychao, Lisa Gorski
Pathogen contamination of surface water is a health hazard in agricultural environments primarily due to the potential for contamination of crops. Furthermore, pathogen levels in surface water are often unreported or under reported due to difficulty with culture of the bacteria. The pathogens are often present, but require resuscitation, making quantification difficult. Frequently, this leads to the use of quantitative PCR targeted to genes unique to the pathogens. However, multiple pathogen types are commonly in the same water sample, both gram + and gram -, leading to problems with DNA extraction...
2018: Frontiers in Microbiology
Masaya Banjo, Atsushi Iguchi, Kazuko Seto, Taisei Kikuchi, Tetsuya Harada, Flemming Scheutz, Sunao Iyoda
In Escherichia coli , more than 180 O groups and 53 H types have been recognized. The O:H serotyping of E. coli strains is an effective method for identifying strains with pathogenic potential and classifying them into clonal groups. In particular, the serotyping of Shiga toxin-producing E. coli (STEC) strains provides valuable information to evaluate the routes, sources, and prevalence of agents in outbreak investigations and surveillance. Here we present a complete and practical PCR-based H typing system " E...
March 28, 2018: Journal of Clinical Microbiology
Lucy C Fox, Solomon J Cohney, Joshua Y Kausman, Jake Shortt, Peter D Hughes, Erica M Wood, Nicole M Isbel, Theo de Malmanche, Anne Durkan, Pravin Hissaria, Piers Blombery, Thomas D Barbour
Thrombotic microangiopathy (TMA) arises in a variety of clinical circumstances with the potential to cause significant dysfunction of the kidneys, brain, gastrointestinal tract and heart. TMA should be considered in all patients with thrombocytopenia and anaemia, with an immediate request to the haematology laboratory to look for red cell fragments on a blood film. Whilst TMA of any aetiology generally demands prompt treatment, this is especially so in thrombotic thrombocytopenic purpura (TTP) and atypical haemolytic uraemic syndrome (aHUS), where organ failure may be precipitous, irreversible and fatal...
March 27, 2018: Internal Medicine Journal
A M Sanso, A V Bustamante, A Krüger, J S Cadona, R Alfaro, M E Cáceres, D Fernández, P M A Lucchesi, N L Padola
The serotype O113:H21 is considered one of the relevant non-O157 STEC serotypes associated with severe human infections. Due to the increased detection of O113 strains and their relationship with clinical cases, which emphasizes the importance of this serogroup as an emerging pathogen, our aim was to determine the characteristics of STEC O113:H21 strains circulating in bovine cattle and retail meat from Argentina. For this purpose, we determined the presence and combinations of various virulence genes (and their variants) related to adhesion and toxicity in a collection of 34 isolates...
March 25, 2018: Zoonoses and Public Health
Lucas Percheron, Raluca Gramada, Stéphanie Tellier, Remi Salomon, Jérôme Harambat, Brigitte Llanas, Marc Fila, Emma Allain-Launay, Anne-Laure Lapeyraque, Valerie Leroy, Anne-Laure Adra, Etienne Bérard, Guylhène Bourdat-Michel, Hassid Chehade, Philippe Eckart, Elodie Merieau, Christine Piètrement, Anne-Laure Sellier-Leclerc, Véronique Frémeaux-Bacchi, Chloe Dimeglio, Arnaud Garnier
BACKGROUND: Hemolytic uremic syndrome related to Shiga-toxin-secreting Escherichia coli infection (STEC-HUS) remains a common cause of acute kidney injury in young children. No specific treatment has been validated for this severe disease. Recently, experimental studies highlight the potential role of complement in STEC-HUS pathophysiology. Eculizumab (EC), a monoclonal antibody against terminal complement complex, has been used in severe STEC-HUS patients, mostly during the 2011 German outbreak, with conflicting results...
March 23, 2018: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
Ellyn P Marder Mph, Patricia M Griffin, Paul R Cieslak, John Dunn, Sharon Hurd, Rachel Jervis, Sarah Lathrop, Alison Muse, Patricia Ryan, Kirk Smith, Melissa Tobin-D'Angelo, Duc J Vugia, Kristin G Holt, Beverly J Wolpert, Robert Tauxe, Aimee L Geissler
Despite ongoing food safety measures in the United States, foodborne illness continues to be a substantial health burden. The 10 U.S. sites of the Foodborne Diseases Active Surveillance Network (FoodNet)* monitor cases of laboratory-diagnosed infections caused by nine pathogens transmitted commonly through food. This report summarizes preliminary 2017 data and describes changes in incidence since 2006. In 2017, FoodNet reported 24,484 infections, 5,677 hospitalizations, and 122 deaths. Compared with 2014-2016, the 2017 incidence of infections with Campylobacter, Listeria, non-O157 Shiga toxin-producing Escherichia coli (STEC), Yersinia, Vibrio, and Cyclospora increased...
March 23, 2018: MMWR. Morbidity and Mortality Weekly Report
Musa Sakuma Adamu, Iniobong Chukwuebuka Ikenna Ugochukwu, Sunday Idoko Idoko, Yakubu Adamu Kwabugge, Nafisatu Sa'ad Abubakar, James Ameh Ameh
Prevalence and distribution of Shiga toxin-producing Escherichia coli (STEC) serogroups from the faecal samples of cattle and camels slaughter in Maiduguri abattoir and their antibiotic resistance profile of the isolates were determined. The highest prevalence (24%) was recorded in the month of September and more STEC isolates came from cattle than the camels. There was significant (P < 0.05) seasonal trend in the prevalence of STEC among cattle and camel with more cases recorded during the wet season...
March 21, 2018: Tropical Animal Health and Production
Rohollah Taghadosi, Mohammad Reza Shakibaie, Hesam Alizade, Hossein Hosseini-Nave, Asma Askari, Reza Ghanbarpour
Aim: The present study was conducted to detect the occurrence, serogroups, virulence genes and phylogenetic relationship of shiga toxin-producing Escherichia coli (STEC) in human, clave and goat in Kerman (southeast of Iran). Background: STEC have emerged as the important foodborne zoonotic pathogens causing human gastrointestinal disease and confirming the risk to public health. Methods: A total of 671 fecal samples were collected from diarrheic patients (n=395) and healthy calves (n=156) and goats (n=120) and screened for the presence of stx gene...
2018: Gastroenterology and Hepatology From Bed to Bench
Kathryn M Wright, Nicola J Holden
Microgreens are edible plants used in food preparation for their appealing flavours and colours. They are grown beyond the point of harvest of sprouted seeds, and normally include the cotyledons and first true leaves. Their method of production is similar to sprouted seeds, which is known to be favourable for growth of microbial pathogens, although there is little data on the potential of food-borne pathogens such as Shigatoxigenic Escherichia coli (STEC) to colonise these plants. We found colonisation of nine different species of microgreen plants by STEC (isolate Sakai, stx-), with high levels of growth over five days, of approximately 5 orders of magnitude, for plants propagated at 21 °C...
March 8, 2018: International Journal of Food Microbiology
Bożenna Mytar, Małgorzata Stec, Rafał Szatanek, Kazimierz Węglarczyk, Katarzyna Szewczyk, Antoni Szczepanik, Grażyna Drabik, Jarek Baran, Maciej Siedlar, Monika Baj-Krzyworzeka
The three cell lines, designated as gastric cancer (GC)1401, GC1415 and GC1436 were derived from peritoneal effusions from patients with gastric adenocarcinoma. Cell lines were established in tissue culture and in immunodeficient, non-obese diabetic/severe combined immunodeficiency (NOD/SCID) mice. All cell lines were cultured in Dulbecco's modified Eagle's medium supplemented with 5% fetal bovine serum. These cell lines were grown as an adherent monolayer with doubling time ranging between 25 h (GC1436 cell line) and 30-34 h (GC1401 and GC1415, respectively)...
April 2018: Oncology Letters
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