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Food borne diseases

Katarzyna A Radomska, Mahdi M Vaezirad, Koen M Verstappen, Marc M S M Wösten, Jaap A Wagenaar, Jos P M van Putten
Campylobacter jejuni is the main cause of bacterial food-borne diseases in developed countries. Chickens are the most important source of human infection. Vaccination of poultry is an attractive strategy to reduce the number of C. jejuni in the intestinal tract of chickens. We investigated the immunogenicity and protective efficacy of a recombinant C. jejuni flagellin-based subunit vaccine with intrinsic adjuvant activity. Toll-like receptor activation assays demonstrated the purity and TLR5 stimulating (adjuvant) activity of the vaccine...
2016: PloS One
Catherine Duport, Michel Jobin, Philippe Schmitt
Bacillus cereus is a food-borne pathogen that causes diarrheal disease in humans. After ingestion, B. cereus experiences in the human gastro-intestinal tract abiotic physical variables encountered in food, such as acidic pH in the stomach and changing oxygen conditions in the human intestine. B. cereus responds to environmental changing conditions (stress) by reversibly adjusting its physiology to maximize resource utilization while maintaining structural and genetic integrity by repairing and minimizing damage to cellular infrastructure...
2016: Frontiers in Microbiology
Kenzo Yonemitsu, Yutaka Terada, Ryusei Kuwata, Dung Nguyen, Nobuyuki Shiranaga, Satomi Tono, Tomoka Matsukane, Mayumi Yokoyama, Kazuo Suzuki, Hiroshi Shimoda, Ai Takano, Masahiko Muto, Ken Maeda
Hepatitis E virus (HEV) is the causative agent of hepatitis E, a food- and water-borne disease. In developed countries, consumption of meats from pigs, wild boars and deer is a major source of infection. Although HEV and HEV-related viruses have been detected in many animal species, their zoonotic potential and prevalence has not been completely understood. To detect anti-HEV antibody in mammalian species, a simple enzyme-linked immunosorbent assay (ELISA) was established using extract from cells expressing HEV capsid protein and protein A/G as an antigen and a reagent for detection of antibody...
October 11, 2016: Journal of Virological Methods
Hongye Jiang, Tingjin Chen, Hengchang Sun, Zeli Tang, Jinyun Yu, Zhipeng Lin, Pengli Ren, Xinyi Zhou, Yan Huang, Xuerong Li, Xinbing Yu
Clonorchiasis, caused by the consumption of raw or undercooked freshwater fish containing infective metacercariae of Clonorchis sinensisis (C.sinensis), remains a common public health problem. New effective prevention strategies are still urgent to control this food-borne infectious disease. The previous studies suggested Bacillus subtilis (B. subtilis) spores was an ideal vaccines delivery system, and the C.sinensis enolase (CsENO) was a potential vaccine candidate against clonorchiasis. In the current study, we detected CsENO-specific IgM levels by ELISA in sera, intestinal mucus and skin mucus in grass carps (Ctenopharyngodon idella) through oral administration with B...
October 8, 2016: Fish & Shellfish Immunology
Paria Pashazadeh, Ahad Mokhtarzadeh, Mohammad Hasanzadeh, Maryam Hejazi, Maryam Hashemi, Miguel de la Guardia
Salmonella infectious diseases spreading every day through food have become a life-threatening problem for millions of people and growing menace to society. Health expert's estimate that the yearly cost of all the food borne diseases is approximately $5-6 billion. Traditional methodologies for salmonella analysis provide high reliability and very low limits of detection. Among them immunoassays and Nucleic acid-based assays provide results within 24h, but they are expensive, tedious and time consuming. So, there is an urgent need for development of rapid, robust and cost-effective alternative technologies for real-time monitoring of salmonella...
August 4, 2016: Biosensors & Bioelectronics
Steven E Massey
Forensic science concerns the application of scientific techniques to questions of a legal nature and may also be used to address questions of historical importance. Forensic techniques are often used in legal cases that involve crimes against persons or property, and they increasingly may involve cases of bioterrorism, crimes against nature, medical negligence, or tracing the origin of food- and crop-borne disease. Given the rapid advance of genome sequencing and comparative genomics techniques, we ask how these might be used to address cases of a forensic nature, focusing on the use of microbial genome sequence analysis...
August 2016: Microbiology Spectrum
Tatyana Goldberg, Burkhard Rost, Yana Bromberg
Type III secretion system is a key bacterial symbiosis and pathogenicity mechanism responsible for a variety of infectious diseases, ranging from food-borne illnesses to the bubonic plague. In many Gram-negative bacteria, the type III secretion system transports effector proteins into host cells, converting resources to bacterial advantage. Here we introduce a computational method that identifies type III effectors by combining homology-based inference with de novo predictions, reaching up to 3-fold higher performance than existing tools...
October 7, 2016: Scientific Reports
Jusun Hwang, Kyunglee Lee, Young-Jun Kim, Jonathan M Sleeman, Hang Lee
To assess the status of research on wildlife diseases in the Republic of Korea (ROK) and to identify trends, knowledge gaps, and directions for future research, we reviewed epidemiologic publications on wildlife-associated diseases in the ROK. We identified a relatively small but rapidly increasing body of literature. The majority of publications were focused on public or livestock health and relatively few addressed wildlife health. Most studies that focused on human and livestock health were cross-sectional whereas wildlife health studies were mostly case reports...
October 5, 2016: Journal of Wildlife Diseases
Maria Angela Guzzardi, Patricia Iozzo, Minna K Salonen, Eero Kajantie, Riikka Airaksinen, Hannu Kiviranta, Panu Rantakokko, Johan Gunnar Eriksson
As the population ages, the occurrence of chronic pathologies becomes more common. Leukocyte telomere shortening associates to ageing and age-related diseases. Recent studies suggest that environmental chemicals can affect telomere length. Persistent organic pollutants (POPs) are most relevant, since they are ingested with foods, and accumulate in the body for a long time. This longitudinal study was undertaken to test if circulating POPs predict telomere length and shortening in elderly people. We studied 1082 subjects belonging to the Helsinki Birth Cohort Study (born 1934-1944), undergoing two visits (2001-2004 and 2011-2014)...
October 2016: Aging and Disease
Noushin Arfatahery, Abolfazl Davoodabadi, Taranehpeimaneh Abedimohtasab
Staphylococcus aureus is one of the most common causes of seafood-borne diseases worldwide, which are attributable to the contamination of food by preformed enterotoxins. In this study, a total of 206 (34.3%) Staphylococcus aureus strains were obtained from 600 fish and shrimp samples and were tested for their antimicrobial susceptibility. We assessed the prevalence of the genes responsible for the staphylococcal enterotoxins (SEA, SEB) and toxic shock syndrome toxin 1 (TSST-1) genes. The results indicated that 34% of aqua food samples were contaminated with S...
October 3, 2016: Scientific Reports
Saeed Banawas, Daniel Paredes-Sabja, Peter Setlow, Mahfuzur R Sarker
Clostridium perfringens type A can cause both food poisoning (FP) and non-food-borne (NFB) gastrointestinal diseases. Our previous study reported that a mixture of L-asparagine and KCl (AK) germinated spores of FP and NFB isolates well, but KCl and, to a lesser extent, L-asparagine induced spore germination only in FP isolates. We now report that the germination response of FP and NFB spores differs significantly in several defined germinants and rich media. Spores of NFB strain F4969 gerAA, gerKA-KC or gerKC mutants lacking specific germinant receptor proteins germinated slower than wild-type spores with rich media, did not germinate with AK, and germinated poorly compared to wild-type spores with L-cysteine...
September 29, 2016: Microbiology
Divya Chaturvedi, Vinay Kumar Singh
Fasciolosis is a water and food-borne disease caused by the liver fluke Fasciola hepatica and Fasciola gigantica. This disease is widespread in different parts of the world. Lymnaeidae and Planorbidae snails are the intermediate hosts of these flukes. Snail population management is a good tool to control fasciolosis because gastropods represent the weakest link in the life-cycle of trematodes. Chlorophyll can be extracted from any green plant. Chlorophyllin was prepared from spinach in 100% ethanol by using different types of chemicals...
August 2016: Tropical Life Sciences Research
Ali Rostami, Seyyed Javad Seyyedtabaei, Somayeh Aghamolaie, Hamed Behniafar, Zohreh Lasjerdi, Alireza Abdolrasouli, Saeed Mehravar, Cosme Alvarado-Esquivel
Toxoplasmosis is the fourth most common cause of hospitalization and the second cause of death due to food-borne infections. We conducted a cross-sectional study to determine the prevalence, disease awareness and risk factors associated with toxoplasmosis among rural communities in Northern Iran. Data were obtained from serological testing and from participant's questionnaires and were analyzed using a logistic regression. Of the 630 participants, 465 (73.8%), and 12 (1.9%) had IgG and both IgG and IgM anti-Toxoplasma gondii antibodies, respectively...
2016: Revista do Instituto de Medicina Tropical de São Paulo
Carmen H S Chan, Sophie Octavia, Vitali Sintchenko, Ruiting Lan
De novo assembly of bacterial genomes from next-generation sequencing (NGS) data allows a reference-free discovery of single nucleotide polymorphisms (SNP). However, substantial rates of errors in genomes assembled by this approach remain a major barrier for the reference-free analysis of genome variations in medically important bacteria. The aim of this report was to improve the quality of SNP identification in bacterial genomes without closely related references. We developed a bioinformatics pipeline (SnpFilt) that constructs an assembly using SPAdes and then removes unreliable regions based on the quality and coverage of re-aligned reads at neighbouring regions...
September 9, 2016: Computational Biology and Chemistry
Ayako Yoshida, Kayoko Matsuo, Junji Moribe, Ryusei Tanaka, Taisei Kikuchi, Eiji Nagayasu, Naoaki Misawa, Haruhiko Maruyama
Paragonimiasis is a typical food-borne parasitic disease, endemic in most parts of Asia, with sporadic case reports from American and African countries. The major source of infection is undercooked freshwater crab or crayfish, though consumption of wild boar meat is also responsible for the infection in Japan, because wild boar is a paratenic host for Paragonimus westermani. Recently, living juveniles of P. westermani were isolated from muscle of a sika deer, Cervus nippon, in Japan, raising the possibility that venison has been another source of infection...
December 2016: Parasitology International
Elmoubasher Farag, Humberto Guanche Garcell, Nandakumar Ganesan, Shazia Nadeem N Ahmed, Mohammed Al-Hajri, Shk Mohammed Hamad J Al Thani, Salih Ali Al-Marri, Emad Ibrahim, Hamad Eid Al-Romaihi
BACKGROUND: Salmonella is a food- and water-borne pathogen that can be easily spread in a population, leading to the outbreak of salmonellosis that is caused by ingestion of mixed salads contaminated by the pathogen. Most cases occur in the late spring months and can be seen as single cases, clusters, or episodes. OBJECTIVE: The aim of this study was to describe the incidence and epidemiological characteristics of salmonellosis in the State of Qatar. METHODS: This was a retrospective, descriptive study carried out in laboratory-confirmed cases of salmonellosis during 2004-2012 from all Salmonella surveillance centers...
2016: Qatar Medical Journal
Anastasia Phillips, Cristina Sotomayor, Qinning Wang, Nadine Holmes, Catriona Furlong, Kate Ward, Peter Howard, Sophie Octavia, Ruiting Lan, Vitali Sintchenko
BACKGROUND: Salmonella Typhimurium (STM) is an important cause of foodborne outbreaks worldwide. Subtyping of STM remains critical to outbreak investigation, yet current techniques (e.g. multilocus variable number tandem repeat analysis, MLVA) may provide insufficient discrimination. Whole genome sequencing (WGS) offers potentially greater discriminatory power to support infectious disease surveillance. METHODS: We performed WGS on 62 STM isolates of a single, endemic MLVA type associated with two epidemiologically independent, food-borne outbreaks along with sporadic cases in New South Wales, Australia, during 2014...
2016: BMC Microbiology
Ben-Wen Li, Samantha N McNulty, Bruce A Rosa, Rahul Tyagi, Qing Ren Zeng, Kong-Zhen Gu, Gary J Weil, Makedonka Mitreva
BACKGROUND: Paragonimiasis is an important and widespread neglected tropical disease. Fifteen Paragonimus species are human pathogens, but two of these, Paragonimus westermani and P. skrjabini, are responsible for the bulk of human disease. Despite their medical and economic significance, there is limited information on the gene content and expression of Paragonimus lung flukes. RESULTS: The transcriptomes of adult P. westermani and P. skrjabini were studied with deep sequencing technology...
2016: Parasites & Vectors
Farid El Garch, Marlène Sauget, Didier Hocquet, David Lechaudee, Frédérique Woehrle, Xavier Bertrand
OBJECTIVES: In November 2015, a plasmid-mediated colistin resistance, MCR-1, was described in animals, food and humans in China and it was considered as a potential emerging threat to public health. Therefore, we screened for mcr-1 gene a European collection of colistin resistant E. coli (n=218) and Salmonella spp (n=74) isolated from diseased food-producing animals between 2004 and 2014 and characterized the mcr-1-positive clones. METHODS: Screening for mcr-1 gene was performed by PCR on isolates for which inhibition diameter was < 15 mm around a 50-μg disk of colistin...
September 8, 2016: Clinical Microbiology and Infection
Ji Sun Jung, Hyun Jung Chang, Jeong-Yi Kwon
OBJECTIVE: To evaluate the overall profile of children with feeding disorders and their relationships to medical conditions in an outpatient feeding clinic of a tertiary hospital. METHODS: The medical records of 143 children who had visited the feeding clinic between January 2010 and June 2014 were reviewed retrospectively. The presence of a feeding disorder (feeding behavior disorder, dysphagia, and/or failure to thrive [FTT]) and the children's medical conditions were examined by a physiatrist...
August 2016: Annals of Rehabilitation Medicine
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