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Campylobacter gastroenteritis

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https://www.readbyqxmd.com/read/27910936/genome-analysis-of-campylobacter-concisus-strains-from-patients-with-inflammatory-bowel-disease-and-gastroenteritis-provides-new-insights-into-pathogenicity
#1
Heung Kit Leslie Chung, Alfred Tay, Sophie Octavia, Jieqiong Chen, Fang Liu, Rena Ma, Ruiting Lan, Stephen M Riordan, Michael C Grimm, Li Zhang
Campylobacter concisus is an oral bacterium that is associated with inflammatory bowel disease. C. concisus has two major genomospecies, which appear to have different enteric pathogenic potential. Currently, no studies have compared the genomes of C. concisus strains from different genomospecies. In this study, a comparative genome analysis of 36 C. concisus strains was conducted including 27 C. concisus strains sequenced in this study and nine publically available C. concisus genomes. The C. concisus core-genome was defined and genomospecies-specific genes were identified...
December 2, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27903324/epidemiological-and-serological-investigation-of-a-waterborne-campylobacter-jejuni-outbreak-in-a-danish-town
#2
K Gaardbo Kuhn, G Falkenhorst, H-D Emborg, T Ceper, M Torpdahl, K A Krogfelt, S Ethelberg, K Mølbak
Following an unusually heavy rainfall in June 2009, a community-wide outbreak of Campylobacter gastroenteritis occurred in a small Danish town. The outbreak investigation consisted of (1) a cohort study using an e-questionnaire of disease determinants, (2) microbiological study of stool samples, (3) serological study of blood samples from cases and asymptomatic members of case households, and (4) environmental analyses of the water distribution system. The questionnaire study identified 163 cases (respondent attack rate 16%)...
December 1, 2016: Epidemiology and Infection
https://www.readbyqxmd.com/read/27900889/campylobacter-jejuni-strains-coresistant-to-tetracycline-and-ciprofloxacin-in-patients-with-gastroenteritis-in-croatia
#3
Merica Carev, Ana Kovačić, Anita Novak, Marija Tonkić, Ana Jerončić
BACKGROUND: Antibiotic-resistant Campylobacter jejuni strains are rapidly emerging worldwide. Here, we aimed to determine the antibiotic-resistance patterns and genetic structure of C. jejuni from stool samples of symptomatic patients in Dalmatia, the largest Croatian county. METHODS: In a population-based laboratory surveillance programme for campylobacteriosis in Dalmatia from May 2012 to May 2013, C. jejuni (n = 76) were collected from stool samples of all the patients hospitalized with gastroenteritis and matched positive outpatients (n = 77)...
November 30, 2016: Infectious Diseases
https://www.readbyqxmd.com/read/27899145/bibliometric-analysis-of-publications-on-campylobacter-2000-2015
#4
Waleed M Sweileh, Samah W Al-Jabi, Ansam F Sawalha, Adham S AbuTaha, Sa'ed H Zyoud
BACKGROUND: Campylobacter species are widespread zoonotic pathogens. Campylobacter jejuni causes a form of gastroenteritis called campylobacteriosis. Campylobacter drug resistance is considered a serious threat. In order to better understand national and international research output on Campylobacter, we conducted this bibliometric overview of publications on Campylobacter. This study can be used to assess extent of interaction and response of researchers, food regulators, and health policy makers to global burden of campylobacateriosis...
November 29, 2016: Journal of Health, Population, and Nutrition
https://www.readbyqxmd.com/read/27895859/dysbiosis-of-fecal-microbiota-and-high-frequency-of-citrobacter-klebsiella-spp-and-actinomycetes-in-patients-with-irritable-bowel-syndrome-and-gastroenteritis
#5
Leila Ganji, Masoud Alebouyeh, Mohammad Hassan Shirazi, Seyed Saeed Eshraghi, Abbas Mirshafiey, Naser Ebrahimi Daryani, Mohammad Reza Zali
AIM: This study was aimed to characterize putative differences of fecal microbiota between irritable bowel syndrome (IBS) and gastroenteritis patients and healthy controls. BACKGROUND: New evidence proposed that gut microbiota has a deep effect on the balance between health and disease. PATIENTS AND METHODS: The presence of Clostridium difficile, Campylobacter spp., Enterobacteriacea and Staphylococci were detected in the samples using selective and specific culture media...
2016: Gastroenterology and Hepatology From Bed to Bench
https://www.readbyqxmd.com/read/27888275/acute-disseminated-encephalomyelitis-following-campylobacter-jejuni-gastroenteritis-case-report-and-review-of-the-literature
#6
Simone Marziali, Eliseo Picchi, Francesca Di Giuliano, Simone Altobelli, Giorgia Mataluni, Girolama Marfia, Francesco Garaci, Roberto Floris
We describe a case of a 25-year-old male with a diagnosis of acute disseminated encephalomyelitis (ADEM) following infection with Campylobacter jejuni, which is implicated in various human pathologies regarding the central nervous system (CNS) with acute course like Guillain-Barré syndrome (GBS), Miller-Fisher syndrome (MFS), Bickerstaff's brainstem encephalitis (BEE), acute transverse myelitis (ATM) as well as ADEM. These conditions are caused by cross-reactivity between Campylobacter's epitopes and cells of the CNS that causes an immunomediated inflammatory demyelination of the CNS...
November 25, 2016: Neuroradiology Journal
https://www.readbyqxmd.com/read/27885596/methods-to-study-antimicrobial-resistance-in-campylobacter-jejuni
#7
Orhan Sahin, Zhangqi Shen, Qijing Zhang
Campylobacter jejuni is a leading bacterial cause of foodborne gastroenteritis worldwide and is increasingly resistant to clinically important antibiotics. Detection of antibiotic resistance in C. jejuni can be performed with both phenotypic and genotypic methods. In this chapter, we describe the most commonly used molecular biology methods for detection of resistance to clinically important antibiotics. These methods can be employed in both clinical and research settings to facilitate clinical therapy and to monitor the emergence and dissemination of antibiotic-resistant C...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27883255/genome-wide-association-of-functional-traits-linked-with-campylobacter-jejuni-survival-from-farm-to-fork
#8
Koji Yahara, Guillaume Méric, Aidan J Taylor, Stefan P W de Vries, Susan Murray, Ben Pascoe, Leonardos Mageiros, Alicia Torralbo, Ana Vidal, Anne Ridley, Sho Komukai, Helen Wimalarathna, Alison J Cody, Frances M Colles, Noel McCarthy, David Harris, James E Bray, Keith A Jolley, Martin C J Maiden, Stephen D Bentley, Julian Parkhill, Christopher D Bayliss, Andrew Grant, Duncan Maskell, Xavier Didelot, David J Kelly, Samuel K Sheppard
Campylobacter jejuni is a major cause of bacterial gastroenteritis worldwide, primarily associated with the consumption of contaminated poultry. C. jejuni lineages vary in host range and prevalence in human infection, suggesting differences in survival throughout the poultry processing chain. From 7,343 MLST-characterised isolates, we sequenced 600 C. jejuni and C. coli isolates from various stages of poultry processing and clinical cases. A genome-wide association study (GWAS) in C. jejuni ST-21 and ST-45 complexes identified genetic elements over-represented in clinical isolates that increased in frequency throughout the poultry processing chain...
November 24, 2016: Environmental Microbiology
https://www.readbyqxmd.com/read/27865792/a-quantitative-proteomic-screen-of-the-campylobacter-jejuni-flagellar-dependent-secretome
#9
Eoin Scanlan, Lu Yu, Duncan Maskell, Jyoti Choudhary, Andrew Grant
: Campylobacter jejuni is the leading cause of bacterial gastroenteritis in the world. A number of factors are believed to contribute to the ability of C. jejuni to cause disease within the human host including the secretion of non-flagellar proteins via the flagellar type III secretion system (FT3SS). Here for the first time we have utilised quantitative proteomics using stable isotope labelling by amino acids in cell culture (SILAC), and label-free liquid chromatography-mass spectrometry (LC/MS), to compare supernatant samples from C...
November 16, 2016: Journal of Proteomics
https://www.readbyqxmd.com/read/27865268/epitope-mapping-of-campylobacter-jejuni-flagellar-capping-protein-flid-by-chicken-gallus-gallus-domesticus-sera
#10
Hung-Yueh Yeh, Arife Ezgi Telli, Jarra F Jagne, Christopher L Benson, Kelli L Hiett, John E Line
Campylobacter jejuni, a Gram-negative rod, is a zoonotic pathogen associated with human acute bacterial gastroenteritis worldwide. The flagellum, composed of more than 35 proteins, is responsible for colonization of C. jejuni in the host gastrointestinal tract as well as inducing protective antibodies against the homologous serotype. In our previous study, we demonstrated that the flagellar capping protein (FliD) is an immunodominant protein that reacted strongly to sera from field chickens. In this communication, we mapped linear immunoreactive epitopes on FliD using a set of 158 synthetic peptides of 15-mer overlapping with 11 amino acid residues on peptide microarrays with sera from field chickens...
December 2016: Comparative Immunology, Microbiology and Infectious Diseases
https://www.readbyqxmd.com/read/27860343/isolation-of-campylobacter-spp-from-client-owned-dogs-and-cats-and-retail-raw-meat-pet-food-in-the-manawatu-new-zealand
#11
K Bojanić, A C Midwinter, J C Marshall, L E Rogers, P J Biggs, E Acke
Campylobacter causes acute gastroenteritis in people worldwide and is frequently isolated from food, animals and the environment. The disease is predominately food-borne but many routes of transmission and sources of infection have been described, including contact with pets. The prevalence of Campylobacter spp. in dogs and cats varies widely, and data on New Zealand pets are limited. This study aimed to investigate the prevalence of Campylobacter spp. in dogs, cats and retail raw meat pet food products in New Zealand and to characterize Campylobacter jejuni isolates using multilocus sequence typing (MLST)...
November 12, 2016: Zoonoses and Public Health
https://www.readbyqxmd.com/read/27836852/comparative-genomics-reveal-the-diversity-of-restriction-methylation-systems-in-listeria-monocytogenes
#12
Poyin Chen, Henk C den Bakker, Jonas Korlach, Nguyet Kong, Dylan B Storey, Ellen E Paxinos, Meredith Ashby, Tyson Clark, Khai Luong, Martin Wiedmann, Bart C Weimer
: Listeria monocytogenes is a bacterial pathogen that found in a wide variety of anthropogenic and natural environments. Genome sequencing technologies are rapidly becoming a powerful tool in facilitating our understanding of how genotype, classification and virulence phenotypes interact to predict the health risks of individual bacterial isolates. Currently, 57 closed L. monocytogenes genomes are publicly available representing three of the four phylogenetic lineages and suggest L. monocytogenes has high genomic synteny...
November 11, 2016: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/27834694/complete-genome-sequences-of-group-iii-campylobacter-bacteriophages-pc5-and-pc14
#13
Nika Janež, Matjaž Peterka, Tomaž Accetto
Here, we present the whole-genome sequences of bacteriophages PC5 and PC14 specific for Campylobacter jejuni, a leading cause of gastroenteritis in developed countries. Their genomes are syntenic to those of group III Campylobacter bacteriophages and share more than 90% identity at the nucleotide level with members of this group.
November 10, 2016: Genome Announcements
https://www.readbyqxmd.com/read/27800028/molecular-epidemiology-virulence-determinants-and-antimicrobial-resistance-of-campylobacter-spreading-in-retail-chicken-meat-in-central-china
#14
Tengfei Zhang, Qingping Luo, Yiluo Chen, Tingting Li, Guoyuan Wen, Rongrong Zhang, Ling Luo, Qin Lu, Diyun Ai, Hongcai Wang, Huabin Shao
BACKGROUND: Campylobacter species are the major food-borne pathogens which could cause bacterial gastroenteritis in humans. Contaminated chicken products have been recognized as the primary vehicles of Campylobacter transmission to human beings. In this study, the prevalence of Campylobacter in retail chicken meat in Central China was investigated, and the isolates were further characterized using molecular approaches and tested for antibiotic resistance. RESULTS: A total of 302 chicken samples purchased from April 2014 to April 2015 were tested...
2016: Gut Pathogens
https://www.readbyqxmd.com/read/27795263/complete-genomic-sequence-of-campylobacter-jejuni-subsp-jejuni-hs-19-strain-rm1285-isolated-from-packaged-chicken
#15
Craig T Parker, Steven Huynh, Astrid P Heikema
Poultry products serve as the main source of Campylobacter jejuni subsp. jejuni infections in humans. C. jejuni subsp. jejuni infections are a leading cause of foodborne gastroenteritis and are a prevalent antecedent to Guillain-Barré syndrome. This study describes the genome of C. jejuni subsp. jejuni HS:19 strain RM1285, isolated from packaged chicken in California.
October 6, 2016: Genome Announcements
https://www.readbyqxmd.com/read/27778110/surface-proteome-mining-for-identification-of-potential-vaccine-candidates-against-campylobacter-jejuni-an-in-silico-approach
#16
Kusum Mehla, Jayashree Ramana
Campylobacter jejuni remains a major cause of human gastroenteritis with estimated annual incidence rate of 450 million infections worldwide. C. jejuni is a major burden to public health in both socioeconomically developing and industrialized nations. Virulence determinants involved in C. jejuni pathogenesis are multifactorial in nature and not yet fully understood. Despite the completion of the first C. jejuni genome project in 2000, there are currently no vaccines in the market against this pathogen. Traditional vaccinology approach is an arduous and time extensive task...
October 24, 2016: Functional & Integrative Genomics
https://www.readbyqxmd.com/read/27768387/antimicrobial-resistant-campylobacter-in-organically-and-conventionally-raised-layer-chickens
#17
Issmat I Kassem, Olugbenga Kehinde, Anand Kumar, Gireesh Rajashekara
Poultry is a major source of Campylobacter, which can cause foodborne bacterial gastroenteritis in humans. Additionally, poultry-associated Campylobacter can develop resistance to important antimicrobials, which increases the risk to public health. While broiler chickens have been the focus of many studies, the emergence of antimicrobial-resistant Campylobacter on layer farms has not received equal attention. However, the growing popularity of cage-free and organic layer farming necessitates a closer assessment of (1) the impact of these farming practices on the emergence of antimicrobial-resistant Campylobacter and (2) layers as a potential source for the transmission of these pathogens...
September 22, 2016: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/27762269/a-direct-sensing-galactose-chemoreceptor-recently-evolved-in-invasive-strains-of-campylobacter-jejuni
#18
Christopher J Day, Rebecca M King, Lucy K Shewell, Greg Tram, Tahria Najnin, Lauren E Hartley-Tassell, Jennifer C Wilson, Aaron D Fleetwood, Igor B Zhulin, Victoria Korolik
A rare chemotaxis receptor, Tlp11, has been previously identified in invasive strains of Campylobacter jejuni, the most prevalent cause of bacterial gastroenteritis worldwide. Here we use glycan and small-molecule arrays, as well as surface plasmon resonance, to show that Tlp11 specifically interacts with galactose. Tlp11 is required for the chemotactic response of C. jejuni to galactose, as shown using wild type, allelic inactivation and addition mutants. The inactivated mutant displays reduced virulence in vivo, in a model of chicken colonization...
October 20, 2016: Nature Communications
https://www.readbyqxmd.com/read/27757243/an-unexpected-rash-with-gastroenteritis-erythema-multiforme-associated-with-campylobacter-infection
#19
Joon Heng Tan, Liam Healy, Kristel Yap, Aditya Mandal
We present the first documented case of erythema multiforme following campylobacter gastroenteritis.
October 2016: JRSM Open
https://www.readbyqxmd.com/read/27736787/genomic-comparison-of-campylobacter-spp-and-their-potential-for-zoonotic-transmission-between-birds-primates-and-livestock
#20
Allison M Weis, Dylan B Storey, Conor C Taff, Andrea K Townsend, Bihua C Huang, Nguyet T Kong, Kristin A Clothier, Abigail Spinner, Barbara A Byrne, Bart C Weimer
Campylobacter is the leading cause of human gastroenteritis worldwide. Wild birds, including American crows, are abundant in urban, suburban, and agricultural settings and are likely zoonotic vectors of Campylobacter Their proximity to humans and livestock increases the potential spreading of Campylobacter via crows between the environment, livestock, and humans. However, no studies have definitively demonstrated that crows are a vector for pathogenic Campylobacter We used genomics to evaluate the zoonotic and pathogenic potential of Campylobacter from crows to other animals with 184 isolates obtained from crows, chickens, cows, sheep, goats, humans, and nonhuman primates...
December 15, 2016: Applied and Environmental Microbiology
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