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Campylobacter jejuni

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https://www.readbyqxmd.com/read/28431787/-campylobacter-jejuni-o-19-serotype-in-argentine-poultry-meat-supply-chain
#1
Eugenia Rossler, Estefanía M Fuhr, Guillermina Lorenzón, Analía Romero-Scharpen, Ayelén P Berisvil, Jesica E Blajman, Diego M Astesana, Jorge A Zimmermann, Marcia L Fusari, Marcelo L Signorini, Lorena P Soto, Laureano S Frizzo, María V Zbrun
Thermotolerant species of Campylobacter have been focus of attention in the last years because they are the major agent causing zoonotic foodborne diseases. In addition, Campylobacter jejuni O:19 serotype was associated with Guillain Barré syndrome. The aim of this study was to determine the proportion of C. jejuni O:19 serotype isolated at different stages of three poultry meat supply chain in Santa Fe, Argentina. The analysis showed that 18% of isolated C. jejuni belong to serotype O:19. It was also determined that the presence of these strains is given in almost all production stages...
April 18, 2017: Revista Argentina de Microbiología
https://www.readbyqxmd.com/read/28428779/application-of-%C3%AE-resorcylic-acid-as-potential-antimicrobial-feed-additive-to-reduce-campylobacter-colonization-in-broiler-chickens
#2
Basanta R Wagle, Abhinav Upadhyay, Komala Arsi, Sandip Shrestha, Kumar Venkitanarayanan, Annie M Donoghue, Dan J Donoghue
Campylobacter is one of the major foodborne pathogens that result in severe gastroenteritis in humans, primarily through consumption of contaminated poultry products. Chickens are the reservoir host of Campylobacter, where the pathogen colonizes the ceca, thereby leading to contamination of carcass during slaughter. A reduction in cecal colonization by Campylobacter would directly translate into reduced product contamination and risk of human infections. With increasing consumer demand for antibiotic free chickens, significant research is being conducted to discover natural, safe and economical antimicrobials that can effectively control Campylobacter colonization in birds...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28422543/newer-insights-into-the-antidiarrheal-effects-of-acacia-catechu-willd-extract-in-guinea-pig
#3
Matteo Micucci, Roberto Gotti, Ivan Corazza, Gabriella Tocci, Alberto Chiarini, Marta De Giorgio, Luca Camarda, Maria Frosini, Carla Marzetti, Monica Cevenini, Roberta Budriesi
Acacia catechu Willd. is a plant diffused in India and other Asian countries, where it is used as a traditional medicine for the treatment of several ailments including diarrhea, one of the most common pathologies worldwide. In this study, we determined the chemical composition of Acacia catechu Willd. extract (AC) and evaluated its effect on spontaneous and induced contractility in isolated guinea pig ileum and proximal colon. Preliminary data about its antimicrobial effect against some pathogen agents versus some microbiota intestinal strain have been also reported...
April 19, 2017: Journal of Medicinal Food
https://www.readbyqxmd.com/read/28413453/amelioration-of-intestinal-and-systemic-sequelae-of-murine-campylobacter-jejuni-infection-by-probiotic-vsl-3-treatment
#4
Ira Ekmekciu, Ulrike Fiebiger, Kerstin Stingl, Stefan Bereswill, Markus M Heimesaat
BACKGROUND: The incidence of human Campylobacter jejuni infections is progressively increasing worldwide. Probiotic compounds might open up valuable tools to decrease pathogen burden and subsequent pro-inflammatory immune responses, but in vivo data are scarce. METHODS AND RESULTS: Secondary abiotic mice generated by broad-spectrum antibiotic treatment were perorally challenged with the commercial probiotic compound VSL#3 consisting of Streptococcus thermophilus, Bifidobacterium breve, Bifidobacterium longum, Bifidobacterium infantis, Lactobacillus acidophilus, Lactobacillus plantarum, Lactobacillus paracasei, and Lactobacillus delbrueckii ssp...
2017: Gut Pathogens
https://www.readbyqxmd.com/read/28411226/the-current-state-of-macrolide-resistance-in-campylobacter-a-review-of-trends-and-impacts-of-resistance-mechanisms
#5
Hannah Bolinger, Sophia Kathariou
Campylobacter spp., especially Campylobacter jejuni and C. coli, are leading bacterial foodborne pathogens worldwide. In the United States, an estimated 0.8 million cases of campylobacteriosis occur annually, mostly involving C. jejuni. Campylobacteriosis is generally self-limiting but in severe cases treatment with antibiotics may be mandated. Increasing incidence of fluoroquinolone resistance in Campylobacter has rendered macrolides like erythromycin and azithromycin the drugs of choice for human campylobacteriosis...
April 14, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28408683/draft-genome-sequence-of-multidrug-resistant-abortive-campylobacter-jejuni-from-northern-california
#6
Allison M Weis, Kristin A Clothier, Bihua C Huang, Nguyet Kong, Bart C Weimer
Campylobacter jejuni is an enteric bacterium that can cause abortion in livestock. This is the release of a multidrug-resistant Campylobacter jejuni genome from an isolate that caused an abortion in a cow in northern California. This isolate is part of the 100K Pathogen Genome Project.
April 13, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28408091/accessory-genetic-content-in-campylobacter-jejuni-st21cc-isolates-from-feces-and-blood
#7
C P A Skarp, O Akinrinade, R Kaden, C Johansson, H Rautelin
Campylobacter jejuni is an important foodborne pathogen and the most commonly reported bacterial cause of gastroenteritis. C. jejuni is occasionally found in blood, although mechanisms important for invasiveness have remained unclear. C. jejuni is divided into many different lineages, of which the ST21 clonal complex (CC) is widely distributed. Here, we performed comparative genomic and in vitro analyses on 17C. jejuni ST21CC strains derived from human blood and feces in order to identify features associated with isolation site...
April 3, 2017: International Journal of Medical Microbiology: IJMM
https://www.readbyqxmd.com/read/28403215/rv3634c-from-mycobacterium-tuberculosis-h37rv-encodes-an-enzyme-with-udp-gal-glc-and-udp-galnac-4-epimerase-activities
#8
Peehu Pardeshi, K Krishnamurthy Rao, Petety V Balaji
A bioinformatics study revealed that Mycobacterium tuberculosis H37Rv (Mtb) contains sequence homologs of Campylobacter jejuni protein glycosylation enzymes. The ORF Rv3634c from Mtb was identified as a sequence homolog of C. jejuni UDP-Gal/GalNAc 4-epimerase. This study reports the cloning of Rv3634c and its expression as an N-terminal His-tagged protein. The recombinant protein was shown to have UDP-Gal/Glc 4-epimerase activity by GOD-POD assay and by reverse phase HPLC. This enzyme was shown to have UDP-GalNAc 4-epimerase activity also...
2017: PloS One
https://www.readbyqxmd.com/read/28400767/the-periplasmic-chaperone-network-of-campylobacter-jejuni-evidence-that-salc-cj1289-and-ppid-cj0694-are-involved-in-maintaining-outer-membrane-integrity
#9
Aidan J Taylor, Shadi A I Zakai, David J Kelly
The outer membrane (OM) of Gram-negative pathogenic bacteria is a key structure in host-pathogen interactions that contains a plethora of proteins, performing a range of functions including adhesion, nutrient uptake, export of effectors and interaction with innate and adaptive components of the immune system. In addition, the OM can exclude drugs and thus contribute to antimicrobial resistance. The OM of the food-borne pathogen Campylobacter jejuni contains porins, adhesins and other virulence factors that must be specifically localized to this membrane, but the protein sorting mechanisms involved are only partially understood...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28400001/campylobacter-jejuni-survival-in-a-poultry-processing-plant-environment
#10
Lourdes García-Sánchez, Beatriz Melero, Isabel Jaime, Marja-Liisa Hänninen, Mirko Rossi, Jordi Rovira
Campylobacteriosis is the most common cause of bacterial gastroenteritis worldwide. Consumption of poultry, especially chicken's meat is considered the most common route for human infection. The aim of this study was to determine if Campylobacter spp. might persist in the poultry plant environment before and after cleaning and disinfection procedures and the distribution and their genetic relatedness. During one month from a poultry plant were analyzed a total of 494 samples -defeathering machine, evisceration machine, floor, sink, conveyor belt, shackles and broiler meat- in order to isolate C...
August 2017: Food Microbiology
https://www.readbyqxmd.com/read/28390936/evidence-of-campylobacter-jejuni-reduction-in-broilers-with-early-synbiotic-administration
#11
Loredana Baffoni, Francesca Gaggìa, Giuliano Garofolo, Gabriella Di Serafino, Enrico Buglione, Elisabetta Di Giannatale, Diana Di Gioia
C. jejuni is considered a food safety concern to both public health authorities and consumers since it is the leading bacterial cause of food-borne gastroenteritis in humans. A high incidence of C. jejuni in broiler flocks is often correlated to pathogen recovery in retail poultry meat, which is the main source of human infection. In this work broiler chickens were fed with a synbiotic product mixed with conventional feed using two different administration strategies. The synbiotic was formulated with the microencapsulated probiotic Bifidobacterium longum PCB133 and a xylo-oligosaccharide (XOS)...
April 3, 2017: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/28386467/microbiota-composition-and-immune-responses-during-campylobacter-jejuni-infection-in-conventionally-colonized-il-10-mice-lacking-nucleotide-oligomerization-domain-2
#12
Markus M Heimesaat, Ursula Grundmann, Marie E Alutis, André Fischer, Stefan Bereswill
Host immune responses are pivotal for combating enteropathogenic infections. We here assessed the impact of the innate receptor nucleotide oligomerization domain protein 2 (NOD2) in murine Campylobacter jejuni-infection. Conventionally colonized IL-10(-/-) mice lacking NOD2 and IL-10(-/-) controls were perorally challenged with C. jejuni strain 81-176 and displayed comparable pathogenic colonization of intestines until day 14 postinfection (p.i.). Whereas overall intestinal microbiota compositions were comparable in naive mice, NOD2(-/-) IL-10(-/-) mice exhibited less fecal bifidobacteria and lactobacilli than IL-10(-/-) counterparts after infection...
March 2017: European Journal of Microbiology & Immunology
https://www.readbyqxmd.com/read/28386253/current-and-potential-treatments-for-reducing-campylobacter-colonization-in-animal-hosts-and-disease-in-humans
#13
REVIEW
Tylor J Johnson, Janette M Shank, Jeremiah G Johnson
Campylobacter jejuni is the leading cause of bacteria-derived gastroenteritis worldwide. In the developed world, Campylobacter is usually acquired by consuming under-cooked poultry, while in the developing world it is often obtained through drinking contaminated water. Once consumed, the bacteria adhere to the intestinal epithelium or mucus layer, causing toxin-mediated inhibition of fluid reabsorption from the intestine and invasion-induced inflammation and diarrhea. Traditionally, severe or prolonged cases of campylobacteriosis have been treated with antibiotics; however, overuse of these antibiotics has led to the emergence of antibiotic-resistant strains...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28383577/interactions-of-the-periplasmic-binding-protein-ceue-with-fe-iii-n-licam-4-siderophore-analogues-of-varied-linker-length
#14
Ellis J Wilde, Adam Hughes, Elena V Blagova, Olga V Moroz, Ross P Thomas, Johan P Turkenburg, Daniel J Raines, Anne-Kathrin Duhme-Klair, Keith S Wilson
Bacteria use siderophores to mediate the transport of essential Fe(III) into the cell. In Campylobacter jejuni the periplasmic binding protein CeuE, an integral part of the Fe(III) transport system, has adapted to bind tetradentate siderophores using a His and a Tyr side chain to complete the Fe(III) coordination. A series of tetradentate siderophore mimics was synthesized in which the length of the linker between the two iron-binding catecholamide units was increased from four carbon atoms (4-LICAM(4-)) to five, six and eight (5-, 6-, 8-LICAM(4-), respectively)...
April 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28379524/evaluation-of-usda-approved-antimicrobials-on-the-reduction-of-salmonella-and-campylobacter-in-ground-chicken-frames-and-their-effect-on-meat-quality
#15
A Moore, R Nannapaneni, A Kiess, C S Sharma
The main objective of this study was to examine the efficacy of USDA approved antimicrobials in reducing Salmonella Heidelberg (S. H.) and Campylobacter jejuni (C. j.) in ground chicken frames and to determine the treatment effects on total aerobic counts and meat color. Six antimicrobials (0.1% peracetic acid [PAA], 0.6% cetylpyridinium chloride [CPC], 0.005% sodium hypochlorite, 1.5% acidified lactic acid [ALA], 0.3% propionic acid, and 0.1% lauric arginate [LAE]) applied as dip treatments were evaluated in their efficacy in reducing S...
March 31, 2017: Poultry Science
https://www.readbyqxmd.com/read/28377533/nonselective-bottlenecks-control-the-divergence-and-diversification-of-phase-variable-bacterial-populations
#16
Jack Aidley, Shweta Rajopadhye, Nwanekka M Akinyemi, Lea Lango-Scholey, Christopher D Bayliss
Phase variation occurs in many pathogenic and commensal bacteria and is a major generator of genetic variability. A putative advantage of phase variation is to counter reductions in variability imposed by nonselective bottlenecks during transmission. Genomes of Campylobacter jejuni, a widespread food-borne pathogen, contain multiple phase-variable loci whose rapid, stochastic variation is generated by hypermutable simple sequence repeat tracts. These loci can occupy a vast number of combinatorial expression states (phasotypes) enabling populations to rapidly access phenotypic diversity...
April 4, 2017: MBio
https://www.readbyqxmd.com/read/28376713/prevalence-and-antimicrobial-resistance-of-campylobacter-jejuni-and-campylobacter-coli-isolated-from-children-and-environmental-sources-in-urban-and-suburban-areas
#17
Bernadeta Szczepanska, Małgorzata Andrzejewska, Dorota Spica, Jacek J Klawe
BACKGROUND: Campylobacteriosis is a dominant bacterial cause of foodborne infection and is considered the main public health problem in Europe and many other countries worldwide. In the study lasting from 2011 to 2013 we compared the prevalence and antimicrobial resistance of Campylobacter jejuni and Campylobacter coli isolated from children, domestic animals, poultry meat and surface water in Northern Poland. RESULTS: During a 3-years study 1973 samples were analysed...
April 4, 2017: BMC Microbiology
https://www.readbyqxmd.com/read/28373351/key-role-of-capsular-polysaccharide-in-the-induction-of-systemic-infection-and-abortion-by-hypervirulent-campylobacter-jejuni
#18
Orhan Sahin, Samantha A Terhorst, Eric R Burrough, Zhangqi Shen, Zuowei Wu, Lei Dai, Yizhi Tang, Paul J Plummer, Ju Ji, Michael J Yaeger, Qijing Zhang
Campylobacter jejuni is a zoonotic pathogen, and a hypervirulent strain, named clone SA, has recently emerged as the predominant cause of ovine abortion in the United States. To induce abortion, orally ingested Campylobacter must translocate across the intestinal epithelium, spread systemically in the circulation, and reach the fetoplacental tissue. Bacterial factors involved in these steps are not well understood. C. jejuni is known to produce capsular polysaccharide (CPS), but the specific role CPS plays in systemic infection and particularly abortion in animals remains to be determined...
April 3, 2017: Infection and Immunity
https://www.readbyqxmd.com/read/28372482/characterisation-by-multilocus-sequence-and-pora-and-flaa-typing-of-campylobacter-jejuni-isolated-from-samples-of-dog-faeces-collected-in-one-city-in-new-zealand
#19
V Mohan, M A Stevenson, J M Marshall, N P French
AIMS: To investigate the prevalence of Campylobacter spp. and C. jejuni in dog faecal material collected from dog walkways in the city of Palmerston North, New Zealand, and to characterise the C. jejuni isolates by multilocus sequence typing (MLST) and porA and flaA antigen gene typing. METHODS: A total of 355 fresh samples of dogs faeces were collected from bins provided for the disposal of dog faeces in 10 walkways in Palmerston North, New Zealand, between August 2008-July 2009...
April 3, 2017: New Zealand Veterinary Journal
https://www.readbyqxmd.com/read/28371319/faecal-campylobacter-shedding-among-dogs-in-animal-shelters-across-texas
#20
A M Leahy, K J Cummings, L D Rodriguez-Rivera, S A Hamer, S D Lawhon
Epidemiologic studies on faecal Campylobacter shedding among dogs in the United States have been limited, despite evidence that the incidence of human campylobacteriosis has increased over the last decade. Our objectives were to estimate the prevalence of faecal Campylobacter shedding among shelter dogs in Texas, to estimate the specific prevalence of Campylobacter jejuni and Campylobacter coli shedding, and to identify risk factors for Campylobacter-positive status. Using a cross-sectional study design, we collected faecal samples from dogs in six animal shelters across Texas between May and December, 2014...
March 28, 2017: Zoonoses and Public Health
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