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Escherichia coli

ABSTRACT: Fluoroquinolone-resistant Escherichia coli isolates from river water in Japan

PROVIDER: PRJDB15631 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	DRR456242_1.fastq.gz	Fastqsanger.gz
	DRR456242_2.fastq.gz	Fastqsanger.gz
	DRR456243_1.fastq.gz	Fastqsanger.gz
	DRR456243_2.fastq.gz	Fastqsanger.gz
	DRR456244_1.fastq.gz	Fastqsanger.gz

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Project description:Fluoroquinolone-resistant Escherichia coli isolates derived from wildlife in Japan

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Identification of potential tobramycin-resistant mutagenesis of Escherichia coli strains after spaceflight

Project description:Background: This study aimed to explore potential tobramycin-resistant mutagenesis of Escherichia coli (E. coli) strains after spaceflight. Methods: A spaceflight-induced mutagenesis of multi-drug resistant E.coli strain (T1_13) on the outer space for 64 days (ST5), and a ground laboratory with the same conditions (GT5) were conducted. Both whole-genome sequencing and RNA-sequencing were performed. Results: A total of 75 SNPs and 20 InDels were found to be associated with the resistance mechanism. Compared to T1_13, 1242 genes were differentially expressed in more than 20 of 38 tobramycin-resistant E. coli isolates while not in GT5. Function annotation of these SNPs/InDels related genes and differentially expressed genes was performed. Conclusion: This study provided clues for potential tobramycin-resistant spaceflight-induced mutagenesis of E. coli.

2019-12-13 | GSE123795 | GEO

Psychological Evaluation According Colonic Colonization by Escherichia Coli of Patients After Colorectal Surgery

Project description:The purpose of this study is to determine whether the presence of pathogenic Escherichia coli in colon is associated with psychiatric disorders.

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Escherichia coli O157:H7 Isolates Related to the 2006 Spinach-associated Outbreak Exhibit Distinct Transcriptional Profiles

Project description:We compared the transcriptional profiles of 12 E. coli O157:H7 isolates grown to stationary phase in LB broth. These isolates possess the same two enzyme PFGE profile and are related temporally or geographically to the above outbreak. These E. coli O157:H7 isolates included three clinical isolates, five isolates from separate bags of spinach, and single isolates from pasture soil, river water, cow feces, and a feral pig. Twelve condition experiment, 12 E. coli O157:H7 isolates. Two biological replicates for isolates RM6067, RM6069, RM6101, RM6102, RM6103, RM6149, RM6655, RM6658, RM9992, RM9997, RM9998 and RM10002 independently grown to stationary phase in LB at 37°C and harvested. One replicate per array. A type 2 gene expression experimental design was used, with fluorescently labeled genomic DNA as a reference channel in each experiment as described by Lucchini, S., et al. 2005. Infect Immun 73:88-102.

2011-11-01 | E-GEOD-33131 | biostudies-arrayexpress

Enteropathogenic Escherichia Coli (EPEC): Does it Have a Role in Colorectal Tumourigenesis?

Project description:Despite the characterization of many aetiologic genetic changes. The specific causative factors in the development of sporadic colorectal cancer remain unclear. This study was performed to detect the possible role of Enteropathogenic Escherichia coli (EPEC) in developing colorectal carcinoma.

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Escherichia coli

Project description:Cefiderocol-resistant Escherichia coli isolated in Japan

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Source-tracking fecal contamination by genomic analysis of Escherichia coli from human and animal hosts

Project description:The model prokaryote Escherichia coli can exist as a either a commensal or a pathogen in the gut of diverse mammalian hosts. These associations, coupled with its ease of cultivation and genetic variability, have made E. coli a popular indicator organism for tracking the origin of fecal water contamination. Source tracking accuracy is predicated on the assumption that E. coli isolates recovered from contaminated water present a genetic signature characteristic of the host from which they originated. In this study, we compared the accuracy with which E. coli isolated from humans, bear, cattle and deer could be identified by standard fingerprinting methods used for library-based microbial source tracking (repetitive element PCR and pulsed-field gel electrophoresis) in relation to microarray-based analysis of genome content. Our results show that patterns of gene presence or absence were more useful for distinguishing E. coli isolates from different sources than traditional fingerprinting methods, particularly in the case of human strains. Host-associated differences in genome composition included the presence or absence of mobile IS1 elements as well as genes encoding the ferric dicitrate iron transporter (fec), E. coli common pilus (ECP), type 1 fimbriae and the CRISPR associated cas proteins. Many of these differences occurred in regions of the E. coli chromosome previously shown to be “hot spots” for the integration of horizontally-acquired DNA. PCR primers designed to amplify the IS1 and fec loci confirmed array results and demonstrated the ease with which gene presence/absence data can be converted into a diagnostic assay. The data presented here suggest that, despite the high level of genetic diversity observed among isolates by PFGE, human-derived strains may constitute a distinct ecotype distinguished by multiple potential library-independent source tracking markers.

2013-03-01 | GSE21115 | GEO

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