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Campylobacter

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Functional analysis and cryo-electron microscopy of Campylobacter jejuni serine protease HtrA.

Urszula Zarzecka, Alessandro Grinzato, Eaazhisai Kandiah, Dominik Cysewski, Paola Berto, Joanna Skorko-Glonek, Giuseppe Zanotti, Steffen Backert,

Campylobacter jejuni is a predominant zoonotic pathogen causing gastroenteritis and other diseases in humans. An important bacterial virulence factor is the secreted serine protease HtrA (HtrA Cj ), which targets tight and adherens junctional proteins in the gut epithelium. Here we have investigated the function and structure of HtrA Cj ... Read more >>

Gut Microbes (Gut microbes)
[2020, 12(1):1-16]

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Evaluation of Chitosan Nanomaterials in the Treatment of Helicobacter pylori Mediated Gastric Diseases.

Xiaobo Wang, Feng Ji,

We assessed the effect of chitosan on Helicobacter pylori (HPY) in vitro to provide an experimental basis for the clinical application of chitosan in the treatment of gastric diseases. Here, the method of hole drilling was used to detect the bacteriostatic effect of different concentrations and pH values of chitosan ... Read more >>

J Nanosci Nanotechnol (Journal of nanoscience and nanotechnology)
[2020, 20(12):7464-7468]

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A porcine ligated loop model reveals new insight into the host immune response against Campylobacter jejuni.

Nicholas M Negretti, Yinyin Ye, Lais M Malavasi, Swechha M Pokharel, Steven Huynh, Susan Noh, Cassidy L Klima, Christopher R Gourley, Claude A Ragle, Santanu Bose, Torey Looft, Craig T Parker, Geremy Clair, Joshua N Adkins, Michael E Konkel,

The symptoms of infectious diarrheal disease are mediated by a combination of a pathogen's virulence factors and the host immune system. Campylobacter jejuni is the leading bacterial cause of diarrhea worldwide due to its near-ubiquitous zoonotic association with poultry. One of the outstanding questions is to what extent the bacteria ... Read more >>

Gut Microbes (Gut microbes)
[2020, 12(1):1-25]

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[Detection of the ermB gene associated with macrolide resistance in Campylobacter strains isolated from chickens marketed in Lima, PeruDetecção do gene ermB associado à resistência a macrolídeos em cepas de Campylobacter isoladas de frangos comercializados em Lima, no Peru].

Diego Anampa, Christian Benites, César Lázaro, Juan Espinoza, Pedro Angulo, Diego Díaz, Alberto Manchego, Miguel Rojas,

Objective:To detect the presence of the ermB gene associated with macrolide resistance in Campylobacter spp. strains isolated from chickens marketed in Lima, Peru. Methods:120 samples of chicken skin from three markets in the districts of San Martin de Porres (n = 30), Santa Anita (n = 20), and Independencia (n ... Read more >>

Rev. Panam. Salud Publica (Revista panamericana de salud publica = Pan American journal of public health)
[2020, 44:e60]

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Assessing Campylobacter Colonization of Broiler Herds Ante Mortem and Monitoring Campylobacter Contamination Post Mortem by qPCR.

Gudrun Overesch, Katrin Haas, Peter Kuhnert,

Human campylobacteriosis is the most prevalent zoonosis, with chicken meat contributing substantially to the number of cases. Measures to avoid or at least reduce exposure by meat contaminated with Campylobacter (C.) spp. are needed. With regard to the process hygiene criterion introduced in 2018 for Campylobacter spp. on broiler carcasses, ... Read more >>

Pathogens (Pathogens (Basel, Switzerland))
[2020, 9(9):]

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A Multiplex Quantitative Polymerase Chain Reaction Using Applied Biosystems 7500 Fast System for Simultaneous Identification of Three Campylobacter Species with Potential Applications to Food Analysis.

Kun C Liu,

Consumption of Campylobacter-contaminated food is one of the most common causes of bacterial diarrhea. A previously developed quantitative polymerase chain reaction (qPCR) utilizing the SmartCycler instrument platform for identification of Campylobacter jejuni, Campylobacter coli, and Campylobacter lari had to be modified to address the recent discontinuation of the SmartCycler system. ... Read more >>

Foodborne Pathog. Dis. (Foodborne pathogens and disease)
[2020, :]

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Helicobacter pylori infection is associated with elevated galactose-deficient IgA1 in IgA nephropathy.

Xing-Zi Liu, Yue-Miao Zhang, Ni-Ya Jia, Hong Zhang,

Background: Mucosal immunity plays an important role in the pathogenesis of IgA nephropathy (IgAN). This study aimed to investigate if infection of Helicobacter pylori (H. pylori), a common bacteria in the gastrointestinal tract, associated with IgAN.Methods: This study included 261 patients with IgAN and 46 healthy controls. Clinical information and ... Read more >>

Ren Fail (Renal failure)
[2020, 42(1):539-546]

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Prediction of antimicrobial resistance in clinical Campylobacter jejuni isolates from whole-genome sequencing data.

Louise Gade Dahl, Katrine Grimstrup Joensen, Mark Thomas Østerlund, Kristoffer Kiil, Eva Møller Nielsen,

Campylobacter jejuni is recognised as the leading cause of bacterial gastroenteritis in industrialised countries. Although the majority of Campylobacter infections are self-limiting, antimicrobial treatment is necessary in severe cases. Therefore, the development of antimicrobial resistance (AMR) in Campylobacter is a growing public health challenge and surveillance of AMR is important ... Read more >>

Eur. J. Clin. Microbiol. Infect. Dis. (European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology)
[2020, :]

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Antimicrobial activity of organic acids against Campylobacter spp. and development of combinations-A synergistic effect?

Elisa Peh, Sophie Kittler, Felix Reich, Corinna Kehrenberg,

Contaminated poultry meat is considered to be the main source of human infection with Campylobacter spp., a pathogen that asymptomatically colonizes broiler chickens during fattening and contaminates carcasses during slaughter. To prevent or reduce the colonization of broiler flocks with Campylobacter spp., applying different organic acids, especially in combinations, via ... Read more >>

PLoS ONE (PloS one)
[2020, 15(9):e0239312]

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Potential Early Identification of a Large Campylobacter Outbreak Using Alternative Surveillance Data Sources: Autoregressive Modelling and Spatiotemporal Clustering.

Mehnaz Adnan, Xiaoying Gao, Xiaohan Bai, Elizabeth Newbern, Jill Sherwood, Nicholas Jones, Michael Baker, Tim Wood, Wei Gao,

BACKGROUND:Over one-third of the population of Havelock North, New Zealand, approximately 5500 people, were estimated to have been affected by campylobacteriosis in a large waterborne outbreak. Cases reported through the notifiable disease surveillance system (notified case reports) are inevitably delayed by several days, resulting in slowed outbreak recognition and delayed ... Read more >>

JMIR Public Health Surveill (JMIR public health and surveillance)
[2020, 6(3):e18281]

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Multidrug-resistant Campylobacter jejuni, Campylobacter coli and Campylobacter lari isolated from asymptomatic school-going children in Kibera slum, Kenya

Nduhiu Gitahi, Peter Gathura, Michael Gicheru, Beautice Wandia, Annika Nordin,

Background: The objective of this study was to determine the prevalence of thermophilic Campylobacter spp. in asymptomatic school-going children and establish the antibiotic resistance patterns of the isolates towards the drugs used to treat campylobacteriosis, including macrolides, quinolones and tetracycline. Campylobacter spp. are a leading cause of enteric illness and ... Read more >>

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Carriage of Cdt-B Encoding Campylobacter spp., Salmonella Enterica, and Yersinia Entercolitica in Patients With Gastroenteritis and Irritable Bowel Syndrome

Leila Ganji, Mohammad Hassan Shirazi, Masoud Alebouyeh, Parisa Eslami, Mohammad Rahbar, Nasser Ebrahimi Daryani, Mohammad Reza Zali,

Abstract Introduction : Cytolethal distending toxin (Cdt) is one of the bacterial toxins that present in a variety of Gram-negative human pathogens, such as E. coli, Salmonella spp., and Campylobacter spp. CDT composed of three subunits encoded by three adjacent genes, including cdtA , cdt B and cdt C. It ... Read more >>

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Antimicrobial Resistance of Campylobacter spp. Causing Human Infection in Australia: An International Comparison.

Rhiannon L Wallace, Dieter Bulach, Angus McLure, Liana Varrone, Amy V Jennison, Mary Valcanis, James J Smith, Benjamin G Polkinghorne, Kathryn Glass, Martyn D Kirk,

The study investigates the prevalence of antimicrobial resistance in Campylobacter jejuni and Campylobacter coli in gastroenteritis patients in the eight most populous regions in Australia and compares the prevalence of antimicrobial resistance in Europe and North America. A total of 164 Campylobacter isolates were collected from patients with campylobacteriosis and ... Read more >>

Microb. Drug Resist. (Microbial drug resistance (Larchmont, N.Y.))
[2020, :]

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Prevalence, molecular typing and antimicrobial susceptibility of Campylobacter spp. isolates in northern Spain.

I Nafarrate, A Lasagabaster, E Sevillano, E Mateo,

AIM:To analyse the prevalence, genetic diversity and antimicrobial susceptibility of Campylobacter spp. in northern Spain. METHODS AND RESULTS:Campylobacter was isolated from 139 samples of broiler meat and faecal dropping of broiler and swine with a prevalence of 35·4, 62 and 42·8%, respectively. Campylobacter jejuni (n = 55) and Campylobacter coli (n = 31) were ... Read more >>

J. Appl. Microbiol. (Journal of applied microbiology)
[2020, :]

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Molecular Mechanism of Helicobacter pylori-Induced Gastric Cancer

Majid Alipour,

Introduction Various types of cancers threaten human life. The role of bacteria in causing cancer is controversial, but it has been determined that the Helicobacter pylori infection is one of the identified risk factors for gastric cancer. Helicobacter pylori infection is highly prevalent, and about half of the world,s population ... Read more >>

J Gastrointest Cancer (Journal of gastrointestinal cancer)
[2020, :1-8]

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Comparison of Molecular Subtyping and Antimicrobial Resistance Detection Methods Used in a Large Multistate Outbreak of Extensively Drug-Resistant Campylobacter jejuni Infections Linked to Pet Store Puppies.

Lavin A Joseph, Louise K Francois Watkins, Jessica Chen, Kaitlin A Tagg, Christy Bennett, Hayat Caidi, Jason P Folster, Mark E Laughlin, Lia Koski, Rachel Silver, Lauren Stevenson, Scott Robertson, Janet Pruckler, Megin Nichols, Hannes Pouseele, Heather A Carleton, Colin Basler, Cindy R Friedman, Aimee Geissler, Kelley B Hise, Rachael D Aubert,

Campylobacter jejuni is a leading cause of enteric bacterial illness in the United States. Traditional molecular subtyping methods, such as pulsed-field gel electrophoresis (PFGE) and 7-gene multilocus sequence typing (MLST), provided limited resolution to adequately identify C. jejuni outbreaks and separate out sporadic isolates during outbreak investigations. Whole-genome sequencing (WGS) ... Read more >>

J. Clin. Microbiol. (Journal of clinical microbiology)
[2020, 58(10):]

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Association between Helicobacter pylori infection and the risk of colorectal cancer : A systematic review and meta-analysis

Yuling Zuo, Zhao Jing, Mingjiang Bie, Chunyan Xu, Xinyu Hao, Baoning Wang, Zarko Babic.,

Supplemental Digital Content is available in the text Abstract Background: The existing evidence on the relationship between Helicobacter pylori infection and the risk of colorectal cancer is inconsistent. We conducted a systematic review with a meta-analysis to explore this relationship and to determine whether the relationship varies according to the ... Read more >>

Medicine (Baltimore) (Medicine)
[2020, 99(37):]

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Performance Evaluation of the Novodiag Bacterial GE+ Multiplex PCR Assay.

Charly Roy, David Robert, Lucie Bénéjat, Alice Buissonnière, Astrid Ducournau, Francis Mégraud, Emilie Bessède, Delphine Boraud, Philippe Lehours,

The bacteriological diagnosis of intestinal bacterial infections has historically been based on culture on agar plates. However, culture may lack sensitivity, and some enteropathogens, such as pathovars of Escherichia coli, may escape routine diagnosis. Our goal was to evaluate the analytical performance of the Novodiag Bacterial GE+ kit for the ... Read more >>

J. Clin. Microbiol. (Journal of clinical microbiology)
[2020, 58(10):]

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Impact of industrial production system parameters on chicken microbiomes: mechanisms to improve performance and reduce Campylobacter.

Aaron McKenna, Umer Zeeshan Ijaz, Carmel Kelly, Mark Linton, William T Sloan, Brian D Green, Ursula Lavery, Nick Dorrell, Brendan W Wren, Anne Richmond, Nicolae Corcionivoschi, Ozan Gundogdu,

BACKGROUND:The factors affecting host-pathogen ecology in terms of the microbiome remain poorly studied. Chickens are a key source of protein with gut health heavily dependent on the complex microbiome which has key roles in nutrient assimilation and vitamin and amino acid biosynthesis. The chicken gut microbiome may be influenced by ... Read more >>

Microbiome (Microbiome)
[2020, 8(1):128]

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Effects of Campylobacter fetus on bull sperm quality.

Claudia Inés Cagnoli, María Laura Chiapparrone, Claudio Santiago Cacciato, Marcelo Gastón Rodríguez, Juan Florencio Aller, María Del Carmen Catena,

Campylobacter fetus is a gram-negative, motile, spiral or S-shaped bacterium, which induces campylobacteriosis. This disease causes decrease productivity of cattle. Although considerable research has been done on the role of C. fetus on female fertility, little is known about the effect on bulls. The aim of this work was to ... Read more >>

Microb. Pathog. (Microbial pathogenesis)
[2020, 149:104486]

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Sex differences in campylobacteriosis incidence rates at different ages - a seven country, multi-year, meta-analysis. A potential mechanism for the infection.

Manfred S Green, Naama Schwartz, Victoria Peer,

BACKGROUND:There is evidence that males have higher incidence rates (IR) of campylobacteriois than females. The objectives of this study were to determine whether these observations differ between age groups and are consistent over different countries and during different time periods. METHODS:We obtained data on IRs of campylobacteriosis by sex and ... Read more >>

BMC Infect. Dis. (BMC infectious diseases)
[2020, 20(1):625]

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Development of an enzyme-linked immunosorbent assay for detecting Campylobacter hepaticus specific antibodies in chicken sera - a key tool in Spotty Liver Disease screening and vaccine development.

Chithralekha Muralidharan, Arif Anwar, Timothy B Wilson, Peter C Scott, Robert J Moore, Thi Thu Hao Van,

Spotty Liver Disease (SLD) is an emerging disease of serious concern in the egg production industry, as it causes significant egg loss and mortality in layer hens. The causative agent is a newly identified Gram-negative bacterium, Campylobacter hepaticus, and knowledge about C. hepaticus pathogenesis and the potential for vaccine development ... Read more >>

Avian Pathol. (Avian pathology : journal of the W.V.P.A)
[2020, :1-8]

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Comparison of the Pathogenic Potential of Campylobacter jejuni, C. upsaliensis and C. helveticus and Limitations of Using Larvae of Galleria mellonella as an Infection Model.

Krunoslav Bojanić, Els Acke, Wendi D Roe, Jonathan C Marshall, Angela J Cornelius, Patrick J Biggs, Anne C Midwinter,

Campylobacter enteritis in humans is primarily associated with C. jejuni/coli infection. Other species cause campylobacteriosis relatively infrequently; while this could be attributed to bias in diagnostic methods, the pathogenicity of non-jejuni/coli Campylobacter spp. such as C. upsaliensis and C. helveticus (isolated from dogs and cats) is uncertain. Galleria mellonella larvae ... Read more >>

Pathogens (Pathogens (Basel, Switzerland))
[2020, 9(9):]

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Campylobacter jejuni from Canine and Bovine Cases of Campylobacteriosis Express High Antimicrobial Resistance Rates against (Fluoro)quinolones and Tetracyclines.

Sarah Moser, Helena Seth-Smith, Adrian Egli, Sonja Kittl, Gudrun Overesch,

Campylobacter (C.) spp. from poultry is the main source of foodborne human campylobacteriosis, but diseased pets and cattle shedding Campylobacter spp. may contribute sporadically as a source of human infection. As fluoroquinolones are one of the drugs of choice for the treatment of severe human campylobacteriosis, the resistance rates of ... Read more >>

Pathogens (Pathogens (Basel, Switzerland))
[2020, 9(9):]

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An in vitro investigation of the survival and/or growth of Campylobacter jejuni in broiler digestate from different feed types.

G Greene, L Koolman, P Whyte, H Lynch, A Coffey, B Lucey, J Egan, L O'Connor, D Bolton,

Campylobacter spp. is the leading cause of bacterial gastroenteritis worldwide and poultry are the primary reservoir. The aim of this study was to investigate the survival and/or growth of C. jejuni NCTC 11168 in broiler digestate prepared from commercial starter, grower and finisher feed formulations. Bolton broth and digestates were ... Read more >>

Lett. Appl. Microbiol. (Letters in applied microbiology)
[2020, :]

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