نتایج جستجو برای: escherchia coli virulence genes

تعداد نتایج: 588338  

Journal: :Applied and environmental microbiology 2009
Peter Schierack Antje Römer Jörg Jores Heike Kaspar Sebastian Guenther Matthias Filter Jürgen Eichberg Lothar H Wieler

Our understanding of the composition of Escherichia coli populations in wild boars is very limited. In order to obtain insight into the E. coli microflora of wild boars, we studied E. coli isolates from the jejunums, ileums, and colons of 21 wild boars hunted in five geographic locations in Germany. Ten isolates per section were subjected to clonal determination using pulsed-field gel electroph...

2011
S. Madhavan

Fresh flowers of Tagetes erecta L., the flavonoid was isolated by extraction and fractionation with different solvents. It was then identified as patulitrin (10mg/100ml) by various tests. It was then subjected to disc diffusion assay to assess its antibacterial potentials against Alcaligens faecalis, Bacillus cereus, Campylobacter coli, Escherchia coli, Klebsiella pneumoniae, Pseudomonas aerugi...

2016
Emma Sáez-López Elisabet Guiral Dietmar Fernández-Orth Sonia Villanueva Anna Goncé Marta López Irene Teixidó Anna Pericot Francesc Figueras Montse Palacio Teresa Cobo Jordi Bosch Sara M. Soto Marcia Edilaine Lopes Consolaro

Vaginal Escherichia coli colonization is related to obstetric infections and the consequent development of infections in newborns. Ampicillin resistance among E. coli strains is increasing, which is the main choice for treating empirically many obstetric and neonatal infections. Vaginal E. coli strains are very similar to extraintestinal pathogenic E. coli with regards to the virulence factors ...

2011
Ming-Cheng Wang Te-Hui Kuo Chien-Tzu Tseng An-Bang Wu Wei-Hung Lin

BACKGROUND: Escherichia coli is the major pathogen in many extraintestinal Gram-negative bacillus infections. Both E. coli virulence characteristics and host factors contribute to the development of E. coli bacteremia in urinary tract infection (UTI). The aim of this study was to examine the bacterial virulence characteristics in E. coli infections arising from the urinary tract. METHODS: A tot...

2010
Seung-Hak Cho Kyung-Hwan Oh Seong-Han Kim Hee-Bok Oh Mi-Sun Park

OBJECTIVES To characterise the genetic and serological diversity of pathogenic Escherichia coli, we tested 111 E coli strains isolated from diarrhoeal patients in Korea between 2003 and 2006. METHODS The isolates were tested through polymerase chain reaction (PCR) and slide agglutination method for the detection of virulence genes and serotypes, respectively. To compare the expression of Shig...

Journal: :Journal of bacteriology 2008
David A Rasko M J Rosovitz Garry S A Myers Emmanuel F Mongodin W Florian Fricke Pawel Gajer Jonathan Crabtree Mohammed Sebaihia Nicholas R Thomson Roy Chaudhuri Ian R Henderson Vanessa Sperandio Jacques Ravel

Whole-genome sequencing has been skewed toward bacterial pathogens as a consequence of the prioritization of medical and veterinary diseases. However, it is becoming clear that in order to accurately measure genetic variation within and between pathogenic groups, multiple isolates, as well as commensal species, must be sequenced. This study examined the pangenomic content of Escherichia coli. S...

Journal: :Microbiology spectrum 2014
Jay L Mellies Emily Lorenzen

Coordinated expression of enterohemorrhagic Escherichia coli virulence genes enables the bacterium to cause hemorrhagic colitis and the complication known as hemolytic-uremic syndrome. Horizontally acquired genes and those common to E. coli contribute to the disease process, and increased virulence gene expression is correlated with more severe disease in humans. Researchers have gained conside...

2015
Vanessa L. Koga Sara Scandorieiro Eliana C. Vespero Alexandre Oba Benito G. de Brito Kelly C. T. de Brito Gerson Nakazato Renata K. T. Kobayashi

Microbiological contamination in commercial poultry production has caused concerns for human health because of both the presence of pathogenic microorganisms and the increase in antimicrobial resistance in bacterial strains that can cause treatment failure of human infections. The aim of our study was to analyze the profile of antimicrobial resistance and virulence factors of E. coli isolates f...

Journal: :Veterinary microbiology 2012
Guanghui Wu Ralf Ehricht Muriel Mafura Matthew Stokes Noel Smith Geoff C Pritchard Martin J Woodward

Escherichia coli, the most common cause of bacteraemia in humans in the UK, can also cause serious diseases in animals. However the population structure, virulence and antimicrobial resistance genes of those from extraintestinal organs of livestock animals are poorly characterised. The aims of this study were to investigate the diversity of these isolates from livestock animals and to understan...

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