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Gut Pathogens

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https://www.readbyqxmd.com/read/29299067/a-multicenter-prospective-study-on-the-diagnostic-performance-of-a-new-liquid-rapid-urease-test-for-the-diagnosis-of-helicobacter-pylori-infection
#1
Werner Dolak, Ceren Bilgilier, Alexander Stadlmann, Judith Leiner, Andreas Püspök, Wolfgang Plieschnegger, Franz Siebert, Friedrich Wewalka, Rainer Schöfl, Ursula Huber-Schönauer, Christian Datz, Susanne Biowski-Frotz, Christoph Högenauer, Christiane Schrutka-Kölbl, Athanasios Makristathis, Maximilian Schöniger-Hekele, Christoph Steininger
Background: Helicobacter pylori (H. pylori) causes a diversity of gastric diseases. Rapid urease tests (RUT) are well established for the point-of-care, invasive diagnosis of H. pylori infection. The study aimed to evaluate the diagnostic performance of a new liquid RUT, the preOx-HUT, within a prospective cohort of treatment-naïve patients. Methods: The multicenter prospective clinical trial was conducted at nine Austrian centers for gastrointestinal endoscopy...
2017: Gut Pathogens
https://www.readbyqxmd.com/read/29270234/colistin-resistant-escherichia-coli-carrying-mcr-1-in-urban-sludge-samples-dhaka-bangladesh
#2
Aminul Islam, Zillur Rahman, Shirajum Monira, Md Anisur Rahman, Andrew Camilli, Christine M George, Niyaz Ahmed, Munirul Alam
Of 48 bacteria belonging to the family Enterobacteriaceae tested from urban sludge samples, one Escherichia coli isolate was resistant to colistin and possessed the resistance marker gene mcr-1 found for the first time from Bangladesh. The colistin resistant E. coli was multidrug resistant showing resistance to 11 different antibiotics tested.
2017: Gut Pathogens
https://www.readbyqxmd.com/read/29270233/low-distribution-of-genes-encoding-virulence-factors-in-shigella-flexneri-serotypes-1b-clinical-isolates-from-eastern-chinese-populations
#3
Wenting Fan, Huimin Qian, Wenkang Shang, Chen Ying, Xuedi Zhang, Song Cheng, Bing Gu, Ping Ma
Background: The ability of Shigella to invade, colonize, and eventually kill host cells is influenced by many virulence factors. However, there is no analysis of related genes in Jiangsu Province of China so far. Shigella flexneri was collected from 13 cities of Jiangsu Province through the provincial Centers for Disease Control (CDC) for analysis of distribution of major virulence genes (ipaH, ipaBCD, ial, virF, virB, sigA, set1A, sepA, sat, pic, set1B and sen) detected by PCR technology...
2017: Gut Pathogens
https://www.readbyqxmd.com/read/29255490/exposure-to-environmental-microbiota-explains-persistent-abdominal-pain-and-irritable-bowel-syndrome-after-a-major-flood
#4
NurFadhilah Yusof, Nurhazwani Hamid, Zheng Feei Ma, Rona Marie Lawenko, Wan Mohd Zahiruddin Wan Mohammad, Deirdre A Collins, Min Tze Liong, Toshitaka Odamaki, Jinzhong Xiao, Yeong Yeh Lee
Background: After an environmental disaster, the affected community is at increased risk for persistent abdominal pain but mechanisms are unclear. Therefore, our study aimed to determine association between abdominal pain and poor water, sanitation and hygiene (WaSH) practices, and if small intestinal bacterial overgrowth (SIBO) and/or gut dysbiosis explain IBS, impaired quality of life (QOL), anxiety and/or depression after a major flood. Results: New onset abdominal pain, IBS based on the Rome III criteria, WaSH practices, QOL, anxiety and/or depression, SIBO (hydrogen breath testing) and stools for metagenomic sequencing were assessed in flood victims...
2017: Gut Pathogens
https://www.readbyqxmd.com/read/29255489/recovery-of-salmonella-isolated-from-eggs-and-the-commercial-layer-farms
#5
Mei Long, Hua Yu, Li Chen, Guoyan Wu, Siyue Zhao, Wenwen Deng, Shujuan Chen, Kang Zhou, Shuliang Liu, Li He, Xiaoling Ao, Yubao Yan, Menggen Ma, Hongning Wang, Margaret A Davis, Lisa Jones, Bei Li, Anyun Zhang, Likou Zou
Background: Salmonella is recognized as a common bacterial cause of foodborne diarrheal illness worldwide, and animal or its food products have been the most common vehicles of the Salmonella infections. This study aimed to investigate the distribution of Salmonella in two commercial layer farms and to determine the genetic relatedness between these strains. The Salmonella isolates were serotyped by slide agglutination using commercial antisera and analyzed for genetic relatedness using pulsed-field gel electrophoresis (PFGE)...
2017: Gut Pathogens
https://www.readbyqxmd.com/read/29255488/modulation-of-the-main-porcine-enteric-neuropeptides-by-a-single-low-dose-of-lipopolysaccharide-lps-salmonella-enteritidis
#6
Anita Mikołajczyk, Sławomir Gonkowski, Dagmara Złotkowska
Background: The present research was conducted to investigate the influence of a low, single dose of LPS, which does not result in any clinical symptoms of intoxication on the expression of selected neuropeptides within the intestines of the domestic pig. Methods: This experiment was conducted on immature female pigs of the Pitrain × Duroc breed (n = five per group). Seven days after the intravenous injection of 10 mL saline solution for control animals and 5 μg/kg b...
2017: Gut Pathogens
https://www.readbyqxmd.com/read/29239403/correction-to-crispr-like-sequences-in-helicobacter-pylori-and-application-in-genotyping
#7
Khotchawan Bangpanwimon, Jaksin Sottisuporn, Pimonsri Mittraparp-Arthorn, Warattaya Ueaphatthanaphanich, Attapon Rattanasupar, Christine Pourcel, Varaporn Vuddhakul
[This corrects the article DOI: 10.1186/s13099-017-0215-8.].
2017: Gut Pathogens
https://www.readbyqxmd.com/read/29225701/cytotoxic-escherichia-coli-strains-encoding-colibactin-and-cytotoxic-necrotizing-factor-cnf-colonize-laboratory-macaques
#8
Yan Feng, Anthony Mannion, Carolyn M Madden, Alton G Swennes, Catherine Townes, Charles Byrd, Robert P Marini, James G Fox
Background: Many Escherichia coli strains are considered to be a component of the normal flora found in the human and animal intestinal tracts. While most E. coli strains are commensal, some strains encode virulence factors that enable the bacteria to cause intestinal and extra-intestinal clinically-relevant infections. Colibactin, encoded by a genomic island (pks island), and cytotoxic necrotizing factor (CNF), encoded by the cnf gene, are genotoxic and can modulate cellular differentiation, apoptosis and proliferation...
2017: Gut Pathogens
https://www.readbyqxmd.com/read/29213333/comparative-genomic-analysis-of-clostridium-difficile-ribotype-027-strains-including-the-newly-sequenced-strain-nckuh-21-isolated-from-a-patient-in-taiwan
#9
Haruo Suzuki, Masaru Tomita, Pei-Jane Tsai, Wen-Chien Ko, Yuan-Pin Hung, I-Hsiu Huang, Jenn-Wei Chen
Background: Clostridium difficile is a Gram-positive anaerobe and the leading cause of antibiotic-associated diarrhea worldwide. The emergence of ribotype 027 (RT027) strains is associated with increased incidence of infection and mortality. To further understand the relationship between C. difficile NCKUH-21, a RT027 strain isolated from a patient in Taiwan, and other RT027 strains, we performed whole-genome shotgun sequencing on NCKUH-21 and comparative genomic analyses. Results: The genome size, G+C content, and gene number for the NCKUH-21 strain were determined to be similar to those for other C...
2017: Gut Pathogens
https://www.readbyqxmd.com/read/29201151/complete-genome-sequences-of-clostridium-perfringens-del1-strain-isolated-from-chickens-affected-by-necrotic-enteritis
#10
Charles Li, Xianghe Yan, Hyun S Lillehoj
Background: Clostridium perfringens is ubiquitous in nature. It is a normal inhabitant in the intestinal tract of animals and humans. As the primary etiological agent of gas gangrene, necrosis and bacteremia, C. perfringens causes food poisoning, necrotic enteritis (NE), and even death. Epidemiology research has indicated that the increasing incidence of NE in poultry is associated with the withdrawal of in-feed antibiotic growth promoters in poultry production in response to government regulations...
2017: Gut Pathogens
https://www.readbyqxmd.com/read/29201150/differences-in-the-gut-microbiota-of-dogs-canis-lupus-familiaris-fed-a-natural-diet-or-a-commercial-feed-revealed-by-the-illumina-miseq-platform
#11
Junhyung Kim, Jae-Uk An, Woohyun Kim, Soomin Lee, Seongbeom Cho
Background: Recent advances in next-generation sequencing technologies have enabled comprehensive analysis of the gut microbiota, which is closely linked to the health of the host. Consequently, several studies have explored the factors affecting gut microbiota composition. In recent years, increasing number of dog owners are feeding their pets a natural diet i.e., one consisting of bones, raw meat (such as chicken and beef), and vegetables, instead of commercial feed. However, the effect of these diets on the microbiota of dogs (Canis lupus familiaris) is unclear...
2017: Gut Pathogens
https://www.readbyqxmd.com/read/29201149/complete-genome-sequence-of-the-vibrio-vulnificus-strain-vv2014djh-a-human-pathogenic-bacterium-isolated-from-a-death-case-in-china
#12
Junhang Pan, Yi Sun, Wenwu Yao, Haiyan Mao, Yanjun Zhang, Muyuan Zhu
Background: Vibrio vulnificus, an opportunistic pathogen, is the causative agent of life-threatening septicemia and severe wound infections. However, the pathogenicity and virulence factors of V. vulnificus are not fully understood. Here we report the complete genome sequence of V. vulnificus VV2014DJH, which was isolated from a death case. Results: The genome of the V. vulnificus VV2014DJH contains two circular chromosomes with a mean G+C content of 46.8%, but does not consists of any plasmids...
2017: Gut Pathogens
https://www.readbyqxmd.com/read/29201148/whole-genome-sequencing-based-detection-of-antimicrobial-resistance-and-virulence-in-non-typhoidal-salmonella-enterica-isolated-from-wildlife
#13
Milton Thomas, Gavin John Fenske, Linto Antony, Sudeep Ghimire, Ronald Welsh, Akhilesh Ramachandran, Joy Scaria
The aim of this study was to generate a reference set of Salmonella enterica genomes isolated from wildlife from the United States and to determine the antimicrobial resistance and virulence gene profile of the isolates from the genome sequence data. We sequenced the whole genomes of 103 Salmonella isolates sampled between 1988 and 2003 from wildlife and exotic pet cases that were submitted to the Oklahoma Animal Disease Diagnostic Laboratory, Stillwater, Oklahoma. Among 103 isolates, 50.48% were from wild birds, 0...
2017: Gut Pathogens
https://www.readbyqxmd.com/read/29177012/crispr-like-sequences-in-helicobacter-pylori-and-application-in-genotyping
#14
Khotchawan Bangpanwimon, Jaksin Sottisuporn, Pimonsri Mittraparp-Arthorn, Warattaya Ueaphatthanaphanich, Attapon Rattanasupar, Christine Pourcel, Varaporn Vuddhakul
Background: Many bacteria and archaea possess a defense system called clustered regularly interspaced short palindromic repeats (CRISPR) associated proteins (CRISPR-Cas system) against invaders such as phages or plasmids. This system has not been demonstrated in Helicobacter pylori. The numbers of spacer in CRISPR array differ among bacterial strains and can be used as a genetic marker for bacterial typing. Results: A total of 36 H. pylori isolates were collected from patients in three hospitals located in the central (PBH) and southern (SKH) regions of Thailand...
2017: Gut Pathogens
https://www.readbyqxmd.com/read/29163672/contribution-of-riboflavin-supply-pathways-to-vibrio-cholerae-in-different-environments
#15
Andrés Fuentes Flores, Ignacio Sepúlveda Cisternas, José Ignacio Vásquez Solis de Ovando, Alexia Torres, Víctor Antonio García-Angulo
Background: The waterborne diarrheagenic bacterium Vibrio cholerae, cause of the pandemic cholera disease, thrives in a variety of environments ranging from estuarine waters to the human intestinal tract. This species has two ways to obtain the essential micronutrient riboflavin, de novo biosynthesis and environmental uptake through the RibN importer. The way these functions interrelate to fulfill riboflavin needs in different conditions in this species is unknown. Results: This study analyzed the contributions of riboflavin biosynthesis and transport to the culturability of Vibrio cholerae in river and seawater in vitro and in the Caenorhabditis elegans nematode host model...
2017: Gut Pathogens
https://www.readbyqxmd.com/read/29151897/community-acquired-infection-with-hypervirulent-clostridium-difficile-isolates-that-carry-different-toxin-and-antibiotic-resistance-loci-a-case-report
#16
Marina Muñoz, Milena Camargo, Dora Inés Ríos-Chaparro, Paula Gómez, Manuel Alfonso Patarroyo, Juan David Ramírez
Background: Clostridium difficile infection (CDI) leads to the onset of antibiotic-associated diarrhea (AAD) and a wide range of gastrointestinal pathologies. Currently, CDI is one of the most important opportunistic infections at the intrahospital level and an exponential increase in community-acquired infections has been reported. Herein, we evaluated the relationships (at phylogenetic and genetic population structure levels), as well as the molecular toxigenic and antibiotic resistance profiles of a set of isolates established from a case of community acquired-CDI...
2017: Gut Pathogens
https://www.readbyqxmd.com/read/29151896/genotypic-diversity-antimicrobial-resistance-and-biofilm-forming-abilities-of-campylobacter-isolated-from-chicken-in-central-china
#17
Tengfei Zhang, Jun Dong, Yiluo Cheng, Qin Lu, Qingping Luo, Guoyuan Wen, Guoping Liu, Huabin Shao
Background: Campylobacter is considered to be the leading cause of human bacterial gastroenteritis, of which poultry is the main reservoir. Campylobacter contaminated chicken products are a major cause of human Campylobacter infection. In this study, the prevalence of Campylobacter in chicken in central China was investigated, and the genotypic diversity, antimicrobial resistance and biofilm of these isolates were characterized. Results: A total of 206 Campylobacter isolates, including 166 C...
2017: Gut Pathogens
https://www.readbyqxmd.com/read/29151895/toll-like-receptor-4-differentially-mediates-intestinal-and-extra-intestinal-immune-responses-upon-multi-drug-resistant-pseudomonas-aeruginosa-association-of-il10-mice-with-chronic-colitis
#18
Anne Grunau, Ulrike Escher, Anja A Kühl, Stefan Bereswill, Markus M Heimesaat
Background: Infections with multi-drug resistant (MDR) Gram-negative bacteria including Pseudomonas aeruginosa (PA) have become a serious threat particularly in hospitalized patients with immunopathological co-morbidities. The well-balanced interplay between immune cells, pattern recognition receptors such as Toll-like receptor (TLR)-4 sensing lipopolysaccharide from Gram-negative bacteria including PA, and evolving pathways is crucial to prevent the host from invading (opportunistic) pathogens...
2017: Gut Pathogens
https://www.readbyqxmd.com/read/29142593/prevailing-clone-st69-of-vibrio-cholerae-o139-in-india-over-10%C3%A2-years
#19
Shalini Anandan, Naveen Kumar Devanga Ragupathi, Dhiviya Prabaa Muthuirulandi Sethuvel, Suji Thangamani, Balaji Veeraraghavan
Vibrio cholerae is responsible for the cause of severe life-threatening infection known as cholera. The study aimed to analyze the genetic make-up of V. cholerae O139 isolates from India and compare its phylogeny with the global strains. The genome data revealed that all isolates were of same sequence type (ST69) which belongs to seventh pandemic clone, with same virulence gene profile and, antimicrobial resistance gene profile except for two isolates. No known CRISPR repeats were identified in any of these isolates...
2017: Gut Pathogens
https://www.readbyqxmd.com/read/29090023/a-human-stool-derived-bilophila-wadsworthia-strain-caused-systemic-inflammation-in-specific-pathogen-free-mice
#20
Zhou Feng, Wenmin Long, Binhan Hao, Ding Ding, Xiaoqing Ma, Liping Zhao, Xiaoyan Pang
BACKGROUND: Bilophila wadsworthia is a major member of sulfidogenic bacteria in human gut, it was originally recovered from different clinical specimens of intra-abdominal infections and recently was reported potentially linked to different chronic metabolic disorders. However, there is still insufficient understanding on its detailed function and mechanism to date. METHODS: A B. wadsworthia strain was isolated from fresh feces of a latent autoimmune diabetes in adults patient and we investigated its pathogenicity by oral administration to specific-pathogen-free mice...
2017: Gut Pathogens
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