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Escherichia coli as Commensal and Pathogenic Bacteria ...
  • As many as 90% of E. colistrains are commensals inhabiting the intestinal tracts of humans and warm-blooded animals. As a commensal, it lives in a mutually beneficial association with its hosts and rarely causes diseases. However, E. colialso remains as one of the most frequent causes of several common bacterial infections in humans and animals.
Adaptation of commensal proliferating Escherichia coli
  • Adaptation of commensal proliferating Escherichia coli to the intestinal tract of young children with cystic fibrosis Susana Matamourosa,1, Hillary S. Hayden a, Kyle R. Hager a, Mitchell J. Brittnacher, Kristina Lachancea,2, Eli J. Weiss,
Commensal Escherichia coli Strains Can Promote Intestinal ...
  • Oct 09, 2018· Escherichia coli is a facultative anaerobic symbiont found widely among mammalian gastrointestinal tracts. Several human studies have reported increased commensal E. coli abundance in the intestine during inflammation; however, host immunological responses toward commensal E. coli during inflammation are not well-defined.
Commensal Escherichia coli are a reservoir for the ...
  • Jan 20, 2020· By characterizing commensal Escherichia coli from Shigella-infected and healthy children, we identified an extensive array of AMR genes and …
Commensal and Pathogenic Escherichia coli Metabolism in ...
  • Jun 01, 2015· By examining the sugars used by various human commensal E. coli strains to colonize, we identified a pair of strains(E. coli HS and E. coli Nissle 1917) that together use the five sugars previously found to be most important for colonization by the enterohemorrhagic Escherichia coli (EHEC) strain EDL933 (O157:H7) .
High prevalence of antibiotic resistance in commensal ...
  • Feb 09, 2021· Commensal Escherichia coli is a gram-negative bacterium located in the gut of humans, animals, birds, and also exists in the environment 22.
Conversion of Commensal Escherichia coli K-12 to an ...
  • Sep 06, 2011· IMPORTANCE Escherichia coli K-12 is well established as a benign laboratory strain and a human intestinal commensal. Recent evidences, however, indicate that the typical noninvasive nature of resident E. coli can be reversed under specific circumstances even in the absence of any major genomic flux. We previously engineered an E. coli strain with a mutant histone-like protein, HU, which ...
Increasing Resistance in Commensal Escherichia coli ...
  • Suggested citation for this article: Bartoloni A, Pallecchi L, Fiorelli C, Di Maggio T, Fernandez C, Villagran AL, et al. Increasing resistance in commensal Escherichia coli, Bolivia and Peru [letter]. Emerg Infect Dis [serial on the Internet]. 2008 Feb [date cited].
Quantitative analysis of commensal Escherichia coli ...
  • ORIGINAL RESEARCH Quantitative analysis of commensal Escherichia coli populations reveals host-specific enterotypes at the intra-species level Mounira Smati1,2,3, Olivier Clermont1,4, Alexandre Bleibtreu1,4,Frederic Fourreau3, Anthony David1,2,4, Anne-Sophie Daubie1,3,4,Cecile Hignard5, Odile Loison5, Bertrand Picard1,2,3 & Erick Denamur1,4 1INSERM, IAME, UMR 1137, F-75018 Paris, France
Quantitative analysis of commensal Escherichia coli ...
  • May 29, 2015· Escherichia coliinhabits the intestines and feces of warm-blooded animals and reptiles (Gordon and Cowling 2003). In humans, it is found at around 108colony forming units (CFU) per gram of feces.
The population genetics of commensal Escherichia coli
  • Commensal niches of Escherichia coli E. coli, a Gram-negative, non-sporulating facultative anaerobe, is an inhabitant of the intestines and faeces of warm-blooded animals and reptiles6,7.
Commensal Escherichia Coli - an overview | ScienceDirect ...
  • In healthy humans, commensal E. coli and ExPEC are the predominant species of Gram-negative bacilli in the colonic flora. E. coli and ExPEC only transiently colonize the oropharynx and skin of …
Commensal-to-pathogen transition: One-single transposon ...
  • Jul 03, 2017· Escherichia coli is both a harmless commensal in the intestines of many mammals, as well as a dangerous pathogen. The evolutionary paths taken by strains of this species in the commensal …
Growth Stimulation of Intestinal Commensal Escherichia ...
  • INTRODUCTION. Under normal physiological conditions, commensal bacteria within the gastrointestinal tract, such as the gram-negative bacterium Escherichia coli, do not cause disease.Following changes in normal homeostasis such as that which occurs in trauma, however, commensal bacteria may pose a pathogenic threat by increased multiplication within the gut and subsequent elaboration of ...
Large-Scale Population Structure of Human Commensal ...
  • Dec 17, 2020· The study of several Escherichia coli intestinal commensal isolates per individual in 265 healthy human subjects belonging to seven populations distributed worldwide showed that the E. coli population is highly structured, with major differences between the tropical and temperate populations.
Antimicrobial resistance in commensal Escherichia coli and ...
  • Jul 01, 2021· Therefore, Escherichia coli and Enterococcus spp., found in the commensal faecal microbiota of animals, have been widely used as indicator bacteria for AMR monitoring (EFSA et …
Large-scale genome analysis of bovine commensal ...
  • Shiga toxin (Stx)-producing Escherichia coli (STEC) and enteropathogenic E. coli (EPEC) are the major foodborne pathogens that can cause hemolytic uremic syndrome … Large-scale genome analysis of bovine commensal Escherichia coli reveals that bovine-adapted E. coli lineages are serving as evolutionary sources of the emergence of human ...
Increasing Resistance in Commensal Escherichia coli ...
  • Jul 21, 2010· Pallecchi L, Bartoloni A, Fiorelli C, Mantella A, Di Maggio T, Gamboa H, Rapid dissemination and diversity of CTX-M extended-spectrum β-lactamase genes in commensal Escherichia coli from healthy children from low-resource settings of Latin America.
A recently isolated human commensal Escherichia coli ST10 ...
  • Sep 28, 2020· The ubiquitous human commensal Escherichia coli has been well investigated through its model representative E. coli K‐12. In this work, we initially characterized E. coli Fec10, a recently isolated human commensal strain of phylogroup A/sequence type ST10. Compared to E. coli K‐12, the 4.88 Mbp Fec10 genome is characterized by distinct single‐nucleotide polymorphisms and acquisition …
Comparative Proteomics of Commensal and Pathogenic Strains ...
  • Keywords:Escherichia coli, commensal, pathogenic, proteomics, two dimensional gel electrophoresis, adaptation. Abstract: Background: Most of the proteomic studies in Escherichia coli have focussed on pathogenic strains, while very few studies have studied the commensal strains. It is important to study the commensal strains because under the ...
Pathogenicity island markers in commensal and ...
  • Sep 01, 2006· INTRODUCTION. Escherichia coli is one of the major causes of extra-intestinal infections, such as cystitis, pyelonephritis, prostatitis, neonatal meningitis and Gram-negative bacteraemia. It is also the most common aerobic bacterium present among the gut flora of healthy individuals. Extra-intestinal pathogenic and commensal E. coli typically differ with respect to ECOR …
Escherichia coli K12: An evolving opportunistic commensal ...
  • Aug 01, 2019· Escherichia coli is one of the predominant facultative commensal anaerobes that is generally considered safe under normal health conditions but has also been associated with development of some chronic intestinal conditions when the host gut milieu is …
Antimicrobial resistance in commensal Escherichia coli and ...
  • Mar 19, 2021· Commensal bacteria, such as Escherichia coli or Enterococcus spp., are important AMR reservoirs and their use as sentinel microorganisms help to understand time-trends in AMR surveillance [35, 36]. These aspects make these bacteria an excellent tool to evaluate the effect of different on-farm interventions in the AMR threat.
Identification of Commensal Escherichia coli Genes ...
  • May 07, 2013· Conway T, Krogfelt KA, Cohen PS (2004) The Life of Commensal Escherichia coli in the Mammalian Intestine. In: Curtiss R III, Böck A, Ingraham JL, Kaper JB, Neidhardt FC, et al.., editors. Escherichia coli and Salmonella Cellular and Molecular Biology, online edition. Washington, DC: …
Adherence patterns of Escherichia coli in the intestine ...
  • Sep 01, 2020· Escherichia coli (E.coli) is a commensal bacteria often present in the human Gastro-Intestinal tract (GI tract) []. E.coli pathotypes and Extraintestinal Pathogenic E.coli (ExPEC) causes several health disorders in GI tract, and urinary tract [].Notably, Global Enteric Multi-Center Study (GEMS) illustrated that enterotoxigenic E.coli are the major contributor for diarrhea-related deaths ...
2009 Precolonized Human Commensal Escherichia coli E. …
  • that the human commensal E. coli MG1655 and the human enterohemorrhagic E. coli EDL933 do not use all the same sugars for growth when each is the only E. coli strain in the streptomycin-treated mouse intestine, despite being able to use them all for growth in vitro (17). We found that E.coliEDL933 and E. coli MG1655 both use L-arabinose, L ...
Escherichia coli - Wikipedia
  • Escherichia coli (/ ˌ ɛ ʃ ə ˈ r ɪ k i ə ˈ k oʊ l aɪ /), also known as E. coli (/ ˌ iː ˈ k oʊ l aɪ /), is a Gram-negative, facultative anaerobic, rod-shaped, coliform bacterium of the genus Escherichia that is commonly found in the lower intestine of warm-blooded organisms (endotherms). Most E. coli strains are harmless, but some serotypes (EPEC, ETEC etc.) can cause serious food ...
Multidrug-resistant Commensal Escherichia coli in Children ...
  • Screening for Resistant Escherichia coli in Commensal Microbiota. Rectal swabs, stored in Amies transport medium (Oxoid, Milan, Italy), were transferred in a cold box to the laboratory of the corresponding district hospital within 3 hours of collection. The 4 laboratories participate in national quality control programs.
Genomic evolution of antimicrobial resistance in ...
  • Jul 23, 2021· Escherichia coli has the interesting characteristic of being both a widespread gut commensal bacteria in vertebrates and a versatile pathogen, resulting in killing more than 2 …
Commensal gut bacteria: distribution of Enterococcus ...
  • Jul 15, 2011· Escherichia coli is the major facultative anaerobic inhabitant of the human gut, and commensal Escherichia coli strains can outcompete against gut pathogens and seem to have a beneficial effect on several types of intestinal disorders.
Pathogenic and commensal Escherichia coli from irrigation ...
  • Dec 09, 2014· Introduction. Escherichia coli is a leading cause of bacterial infections, foodborne diarrhoeal disease and extraintestinal infections in both humans and animals (Da Silva and Mendonça, 2012; Tadesse et al., 2012). Escherichia coli strains are found as normal commensals in the intestinal tracts of animals and humans, whereas other strains are important intestinal and extraintestinal …
Antimicrobial resistance clusters in commensal Escherichia ...
  • Jan 17, 2021· In food animals in the EU, AMR monitoring is performed following EU legislation (European Commission, 2013), by annually performing standardized antimicrobial susceptibility testing of a fixed number of indicator organisms like commensal Escherichia coli, and food borne pathogens such as Salmonella and Campylobacter species from animals and ...
Frontiers | Commensal Escherichia coli Strains Can Promote ...
  • Oct 09, 2018· Escherichia coli is a facultative anaerobic symbiont found widely among mammalian gastrointestinal tracts. Several human studies have reported increased commensal E. coli abundance in the intestine during inflammation; however, host immunological responses toward commensal E. coli during inflammation are not well-defined. Here, we show that colonization of gnotobiotic mice with …
Commensal Escherichia coli Aggravates Acute Necrotizing ...
  • An increase of Escherichia-Shigellawas previously reported in acute necrotizing pancreatitis (ANP). We investigated whether Escherichia coliMG1655, an Escherichiacommensal organism, increased intestinal injury and aggravated ANP in rats. ANP was induced by retrograde injection of 3.5% sodium taurocholate into the biliopancreatic duct.
Distribution of Human Commensal Escherichia coli ...
  • Jul 07, 2010· Most Escherichia coli infections other than gastrointestinal infections are believed to originate from human fecal flora, and the term "extraintestinal pathogenic Escherichia coli" (ExPEC) was introduced to describe these E. coli strains ().However, there is an enormous diversity of strains within the species E. coli, making it difficult to clearly identify the potential ExPEC strains ...