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Escherichia Coli O157 infection

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https://www.readbyqxmd.com/read/28925340/british-escherichia-coli-o157-in-cattle-study-becs-to-determine-the-prevalence-of-e-coli-o157-in-herds-with-cattle-destined-for-the-food-chain
#1
M K Henry, S C Tongue, J Evans, C Webster, I J McKENDRICK, M Morgan, A Willett, A Reeves, R W Humphry, D L Gally, G J Gunn, M E Chase-Topping
Escherichia coli O157 are zoonotic bacteria for which cattle are an important reservoir. Prevalence estimates for E. coli O157 in British cattle for human consumption are over 10 years old. A new baseline is needed to inform current human health risk. The British E. coli O157 in Cattle Study (BECS) ran between September 2014 and November 2015 on 270 farms across Scotland and England & Wales. This is the first study to be conducted contemporaneously across Great Britain, thus enabling comparison between Scotland and England & Wales...
September 19, 2017: Epidemiology and Infection
https://www.readbyqxmd.com/read/28921940/attribution-of-human-infections-with-shiga-toxin-producing-escherichia-coli-stec-to-livestock-sources-and-identification-of-source-specific-risk-factors-the-netherlands-2010-2014
#2
L Mughini-Gras, W van Pelt, M van der Voort, M Heck, I Friesema, E Franz
Shiga toxin-producing Escherichia coli (STEC) is a zoonotic pathogen of public health concern whose sources and transmission routes are difficult to trace. Using a combined source attribution and case-control analysis, we determined the relative contributions of four putative livestock sources (cattle, small ruminants, pigs, poultry) to human STEC infections and their associated dietary, animal contact, temporal and socio-econo-demographic risk factors in the Netherlands in 2010/2011-2014. Dutch source data were supplemented with those from other European countries with similar STEC epidemiology...
September 17, 2017: Zoonoses and Public Health
https://www.readbyqxmd.com/read/28888654/shiga-toxin-producing-escherichia-coli-stec-o22-h8-isolated-from-cattle-reduces-e-coli-o157-h7-adherence-in-vitro-and-in-vivo
#3
L Martorelli, A Albanese, D Vilte, R Cantet, A Bentancor, G Zolezzi, I Chinen, C Ibarra, M Rivas, E C Mercado, A Cataldi
PROBLEM ADDRESSED: Shiga toxin-producing Escherichia coli (STEC) are a group of bacteria responsible for food-associated diseases. Clinical features include a wide range of symptoms such as diarrhea, hemorrhagic colitis and the hemolytic uremic syndrome (HUS), a life-threatening condition. OBJECTIVE: Our group has observed that animals naturally colonized with STEC strains of unknown serotype were not efficiently colonized with E. coli O157:H7 after experimental infection...
September 2017: Veterinary Microbiology
https://www.readbyqxmd.com/read/28884271/the-effect-of-anaerobic-digestion-and-storage-on-indicator-microorganisms-in-swine-and-dairy-manure
#4
Annamaria Costa, Claudia Gusmara, Davide Gardoni, Mauro Zaninelli, Fulvia Tambone, Vittorio Sala, Marcella Guarino
The aim of this experimental study was to evaluate the influence of anaerobic digestion and storage on indicator microorganisms in swine and dairy excreta. Samples were collected every 90 days for 15 months at eight farms, four pig, and four dairy farms, four of them having a biogas plant. Moreover, to evaluate storage effects on samples, 20 l of manure and slurry taken at each farm (digested manure only in farms with a biogas plant) were stored in a controlled climatic chamber at 18 °C, for 6 months...
September 7, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28860238/genome-sequences-of-30-escherichia-coli-o157-h7-isolates-recovered-from-a-single-dairy-farm-and-its-associated-off-site-heifer-raising-facility
#5
Seon-Woo Kim, Jeffrey S Karns, Jo Ann S Van Kessel, Bradd J Haley
Cattle are the primary reservoir of Escherichia coli O157:H7, the most frequently isolated serotype of enterohemorrhagic E. coli infections among humans in North America. To evaluate the diversity of E. coli O157:H7 isolates within a single dairy herd, the genomes of 30 isolates collected over a 7-year period were sequenced.
August 31, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28855894/rapid-flow-cytometry-detection-of-a-single-viable-escherichia-coli-o157-h7-cell-in-raw-spinach-using-a-simplified-sample-preparation-technique
#6
Anna J Williams, Willie M Cooper, Shawn Ramsaroop, Pierre Alusta, Dan A Buzatu, Jon G Wilkes
Very low cell count detection of Escherichia coli O157:H7 in foods is critical, since an infective dose for this pathogen may be only 10 cells, and fewer still for vulnerable populations. A flow cytometer is able to detect and count individual cells of a target bacterium, in this case E. coli O157:H7. The challenge is to find the single cell in a complex matrix like raw spinach. To find that cell requires growing it as quickly as possible to a number sufficiently in excess of matrix background that identification is certain...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28852487/rare-genetic-variants-in-shiga-toxin-associated-haemolytic-uraemic-syndrome-genetic-analysis-prior-to-transplantation-is-essential
#7
Frances Dowen, Katrina Wood, Alison L Brown, Jennifer Palfrey, David Kavanagh, Vicky Brocklebank
We present a case of haemolytic uraemic syndrome (HUS) in a 16-year-old female with serological evidence of acute Escherichia coli O157:H7 infection. She progressed to established renal failure and received a deceased donor kidney transplant. Shiga toxin-associated HUS (STEC-HUS) does not recur following renal transplantation, but unexpectedly this patient did experience rapid and severe HUS recurrence. She responded to treatment with the terminal complement inhibitor eculizumab and subsequent genetic analysis revealed a rare variant in a complement gene...
August 2017: Clinical Kidney Journal
https://www.readbyqxmd.com/read/28843125/combination-of-essential-oil-compounds-and-phenolic-acids-against-escherichia-coli-o157-h7-in-vitro-and-in-dry-fermented-sausage-production
#8
Natan V B Meira, Richard A Holley, Keliani Bordin, Renata E F de Macedo, Fernando B Luciano
Escherichia coli O157:H7 is a foodborne pathogen that causes hemorrhagic colitis and hemolytic uremic syndrome. The low dose of infection and severity of the disease represent a concern to public health. Natural compounds have been widely applied as food additives to replace synthetic preservatives. The aim of this study was to determine the efficiency of essential oil compounds (EOCs) in combination with phenolic acids (PA) in vitro and in dry-fermented sausage production. Minimum Inhibitory Concentration (MIC) and Fractional Inhibitory Concentration index (FICindex) were determined for a 5-strain mixture of E...
August 16, 2017: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/28820370/antimicrobial-drug-resistant-shiga-toxin-producing-escherichia-coli-infections-michigan-usa
#9
Sanjana Mukherjee, Rebekah E Mosci, Chase M Anderson, Brian A Snyder, James Collins, James T Rudrik, Shannon D Manning
High frequencies of antimicrobial drug resistance were observed in O157 and non-O157 Shiga toxin-producing E. coli strains recovered from patients in Michigan during 2010-2014. Resistance was more common in non-O157 strains and independently associated with hospitalization, indicating that resistance could contribute to more severe disease outcomes.
September 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/28810248/antibiotic-susceptibility-and-molecular-characterization-of-escherichia-coli-o157-isolates-from-urinary-tract-infections
#10
Zonglan Xie, Ziqiang Dong, Ping Zhu, Lusheng Zhang, Xiaobo Chen, Chuanjiang Dong
BACKGROUND: Escherichia coli O157 is an important food-borne pathogen that can cause diarrhoea, hemorrhagic colitis, and hemolytic uraemic syndrome. Enterobacterial repetitive intergenic consensus sequence PCR (ERIC-PCR) and multilocus sequence typing (MLST) are good methods for molecular typing and the extensive use of antibiotics is a contributing factor to the increasing incidence of antimicrobial-resistant for these strains. OBJECTIVES: The aim of this study was to determine the prevalence, antimicrobial resistance, and genetic diversity of E...
August 16, 2017: Urologia Internationalis
https://www.readbyqxmd.com/read/28807622/community-associated-clostridium-difficile-infection-in-emergency-department-patients-in-western-australia
#11
Deirdre A Collins, Linda A Selvey, Antonio Celenza, Thomas V Riley
Clostridium difficile infection (CDI) is primarily associated with hospitalised patients, however, community-associated CDI (CA-CDI) has increased in Australia. We aimed to investigate the epidemiology and outcomes of CA-CDI cases presenting to hospital emergency departments in Western Australia (WA). A retrospective case-control study of CA-CDI cases presenting at six emergency departments in WA from July 2013 to June 2014 was performed. Clinical signs, recent medication, hospitalisations and potential risk factors for CA-CDI were investigated for cases (n = 34) and unmatched controls (n = 62) who were infected with another gastrointestinal pathogen, including Campylobacter spp...
August 12, 2017: Anaerobe
https://www.readbyqxmd.com/read/28802271/antibiofilm-effect-of-poly-vinyl-alcohol-co-ethylene-pva-co-pe-halamine-film-against-listeria-innocua-and-escherichia-coli-o157-h7
#12
Andrea Cossu, Yang Si, Gang Sun, Nitin Nitin
Bacterial biofilm formation is linked to several infections and foodborne disease outbreaks. To address this challenge, there is an unmet need to develop rechargeable antimicrobial materials that can provide continuous sanitation of contact surfaces especially in the food industry. This study was aimed at evaluating a novel rechargeable antimicrobial polymer formed using PVA-co-PE with halamine functionality to prevent biofilm formation with repeated exposure to high loads of bacteria and organic content and also aid in inactivation of pre-formed biofilms upon contact with this novel material...
August 11, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28802105/combined-influence-of-multiple-climatic-factors-on-the-incidence-of-bacterial-foodborne-diseases
#13
Myoung Su Park, Ki Hwan Park, Gyung Jin Bahk
Information regarding the relationship between the incidence of foodborne diseases (FBD) and climatic factors is useful in designing preventive strategies for FBD based on anticipated future climate change. To better predict the effect of climate change on foodborne pathogens, the present study investigated the combined influence of multiple climatic factors on bacterial FBD incidence in South Korea. During 2011-2015, the relationships between 8 climatic factors and the incidences of 13 bacterial FBD, were determined based on inpatient stays, on a monthly basis using the Pearson correlation analyses, multicollinearity tests, principal component analysis (PCA), and the seasonal autoregressive integrated moving average (SARIMA) modeling...
August 9, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28790986/colonisation-of-meat-by-escherichia-coli-o157-h7-investigating-bacterial-tropism-with-respect-to-the-different-types-of-skeletal-muscles-subtypes-of-myofibres-and-postmortem-time
#14
Caroline Chagnot, Annie Venien, Sandra Renier, Nelly Caccia, Régine Talon, Thierry Astruc, Mickaël Desvaux
Escherichia coli O157:H7 is an enterohaemorrhagic E. coli (EHEC) responsible for serious diseases, especially pediatric, and of great concern for the meat industry. Meat contamination by EHEC occurs at slaughtering, especially at dehiding stage, where bacteria can be transferred from hides to carcasses. The skeletal muscle tissues comprise four major types of myofibres, which differ in their contraction velocity and metabolism. Myofibres are surrounded by the extracellular matrix (ECM). Adhesion of E. coli O157:H7 to meat was investigated considering well-defined types of skeletal muscle and their constituent myofibres as well as postmortem changes in muscle, using fluorescence microscopy and immunohistochemical analyses...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28768110/first-report-of-human-gastroenteritis-caused-by-escherichia-coli-o157-nm-in-brazil
#15
Renata França Castro Santos, Janaína Dos Santos Nascimento, Mercedes Passos Geimba, Claudia Titze Hessel, Eduardo Cesar Tondo
In September 2005, the Sanitary Surveillance Service of Rio de Janeiro (SSS/RJ), Brazil, investigated a case of gastroenteritis involving a 13-year-old teenager hospitalized because of bloody diarrhea and severe abdominal pain. Owing to the severity of the symptoms, an epidemiological investigation was conducted in two states of Brazil. Escherichia coli O157:NM was isolated from stools and from a tomato and cheese salad prepared at the school canteen where the teenager attended. This is the first report of a human case of gastroenteritis related to E...
August 2, 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/28753655/bacterial-effector-nlel-promotes-enterohemorrhagic-e-coli-induced-attaching-and-effacing-lesions-by-ubiquitylating-and-inactivating-jnk
#16
Xiangpeng Sheng, Qing You, Hongnian Zhu, ZeNan Chang, Qingrun Li, Haifeng Wang, Chen Wang, Hongyan Wang, Lijian Hui, Chongtao Du, Xiaoduo Xie, Rong Zeng, Anning Lin, Dongfang Shi, Kangcheng Ruan, Jinghua Yan, George Fu Gao, Feng Shao, Ronggui Hu
As a major diarrheagenic human pathogen, enterohemorrhagic Escherichia coli (EHEC) produce attaching and effacing (A/E) lesions, characterized by the formation of actin pedestals, on mammalian cells. A bacterial T3SS effector NleL from EHEC O157:H7 was recently shown to be a HECT-like E3 ligase in vitro, but its biological functions and host targets remain elusive. Here, we report that NleL is required to effectively promote EHEC-induced A/E lesions and bacterial infection. Furthermore, human c-Jun NH2-terminal kinases (JNKs) were identified as primary substrates of NleL...
July 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28741927/rapid-antibiotic-susceptibility-testing-of-uropathogenic-e-coli-by-tracking-submicron-scale-motion-of-single-bacterial-cells
#17
Karan Syal, Simon Shen, Yunze Yang, Shaopeng Wang, Shelley E Haydel, Nongjian Tao
To combat antibiotic resistance, a rapid antibiotic susceptibility testing (AST) technology that can identify resistant infections at disease onset is required. Current clinical AST technologies take 1-3 days, which is often too slow for accurate treatment. Here we demonstrate a rapid AST method by tracking sub-μm scale bacterial motion with an optical imaging and tracking technique. We apply the method to clinically relevant bacterial pathogens, Escherichia coli O157: H7 and uropathogenic E. coli (UPEC) loosely tethered to a glass surface...
August 25, 2017: ACS Sensors
https://www.readbyqxmd.com/read/28736954/the-impact-of-the-bovine-faecal-microbiome-on-escherichia-coli-o157-h7-prevalence-and-enumeration-in-naturally-infected-cattle
#18
M Kim, L A Kuehn, J L Bono, E D Berry, N Kalchayanand, H C Freetly, A K Benson, J E Wells
AIMS: The objective of this study was to determine if the faecal microbiome has an association with Escherichia coli O157:H7 prevalence and enumeration. METHODS AND RESULTS: Pyrosequencing analysis of faecal microbiome was performed from feedlot cattle fed one of three diets: (i) 94 heifers fed low concentrate (LC) diet, (ii) 142 steers fed moderate concentrate (MC) diet, and (iii) 132 steers fed high concentrate (HC) diet. A total of 322 585 OTUs were calculated from 2,411,122 high-quality sequences obtained from 368 faecal samples...
July 23, 2017: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/28732694/development-and-evaluation-of-latex-agglutination-tests-for-the-detection-of-human-antibodies-to-the-lipopolysaccharides-of-verocytotoxin-producing-escherichia-coli-vtec-serogroups-o157-and-non-o157
#19
Waldemar Rastawicki, Anna Chróst, Kornelia Gielarowiec
Latex agglutination tests (LAT) were developed and evaluated for the rapid detection of LPS antibodies against E. coli serogroup O157, O26, O104, O111 and O145. The latex tests have been proved to be sensitive, fast, easy-to-perform and cost-efficient tools for the screening serodiagnosis of VTEC infections causing haemolytic-uraemic syndrome.
July 18, 2017: Journal of Microbiological Methods
https://www.readbyqxmd.com/read/28728309/escherichia-coli-outer-membrane-protein-f-ompf-an-immunogenic-protein-induces-cross-reactive-antibodies-against-escherichia-coli-and-shigella
#20
Xiao Wang, Da Teng, Qingfeng Guan, Ruoyu Mao, Ya Hao, Xiumin Wang, Junhu Yao, Jianhua Wang
Diarrhea caused by pathogenic Escherichia coli (E. coli) is one of the most serious infectious diseases in humans and animals. Due to antibiotics resistance and the lack of efficient vaccine, more attention should be paid to find potential versatile vaccine candidates to prevent diseases. In this study, the sequence homology analysis indicated that OmpF from E. coli CVCC 1515 shares a high identity (90-100%) with about half of the E. coli (46.7%) and Shigella (52.8%) strains. Then the recombinant OmpF was supposed to be developed as a versatile vaccine to prevent E...
December 2017: AMB Express
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