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ESBL producing E. coli

ABSTRACT: ESBL producing E. coli isolated from pigs and farm-workers

PROVIDER: PRJEB37980 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	ERR4095030_1.fastq.gz	Fastqsanger.gz
	ERR4095030_2.fastq.gz	Fastqsanger.gz
	ERR4095040_1.fastq.gz	Fastqsanger.gz
	ERR4095040_2.fastq.gz	Fastqsanger.gz
	ERR4095050_1.fastq.gz	Fastqsanger.gz

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Transcriptional alterations of virulence-associated genes in extended spectrum beta-lactamase (ESBL)-producing uropathogenic Escherichia coli during morphologic transitions induced by ineffective antibiotics

Project description:The present study examines changes in global gene expression patterns and in virulence factor-associated genes in an extended spectrum beta-lactamase (ESBL)-producing UPEC (ESBL019) during the morphologic transitions induced by an ineffective antibiotic and in the presence of human primary bladder epithelial cells. The morphological shifts induced by ineffective antibiotics are associated with significant transcriptional virulence alterations in ESBL-producing UPEC, which may affect survival and persistence in the urinary tract.

2017-06-06 | GSE99661 | GEO

Shotgun Proteomic Analysis of ESBL and non ESBL Producing Klebsiella Pneumoniae Clinical Isolates

Project description:Shotgun Proteomic Analysis of ESBL and non ESBL Producing Klebsiella Pneumoniae Clinical Isolates

2021-04-16 | PXD011693 | Pride

Shotgun Proteomic Analysis of ESBL and non ESBL Producing Klebsiella Pneumoniae Clinical Isolates

Project description:Shotgun Proteomic Analysis of ESBL and non ESBL Producing Klebsiella Pneumoniae Clinical Isolates

2022-02-24 | PXD011558 | Pride

ESBL E. coli

Project description:ESBL producing E. coli

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Global gene expression profiling and antibiotic susceptibility after repeated exposure to the carbon monoxide-releasing molecule-2 (CORM-2) in multidrug-resistant ESBL-producing uropathogenic Escherichia coli

Project description:Treatment of urinary tract infections is today a challenge due to the increasing prevalence of multidrug-resistant ESBL-producing uropathogenic Escherichia coli (UPEC). There is an urgent need for new treatment strategies for multidrug-resistant UPEC and preferably with targets that have low potential for development of resistance. Carbon monoxide-releasing molecules (CORMs) are novel and potent antibacterial agents. The present study examines the transcriptomic targets of CORM-2 in a multidrug-resistant ESBL-producing UPEC isolate (ESBL7) in response to a single exposure to CORM-2 and after repeated exposure to CORM-2. The bacterial viability and minimal inhibitory concentration (MIC) were also examined after repeated exposure to CORM-2. Microarray analysis revealed that a wide range of processes were affected by CORM-2, including a general trend of down-regulation in energy metabolism and biosynthesis pathways and up-regulation of the SOS response and DNA repair. Several genes involved in virulence (ibpB), antibiotic resistance (marAB, mdtABC) and biofilm formation (bhsA, yfgF) were up-regulated, while some genes involved in virulence (kpsC, fepCEG, entABE), antibiotic resistance (evgA) and biofilm formation (artIP) were down-regulated. Repeated exposure to CORM-2 did not alter the gene expression patterns, the growth inhibitory response to CORM-2 or the MIC values for CORM-2, cefotaxime, ciprofloxacin and trimethoprim.

2016-10-06 | GSE87627 | GEO

ESBL-producing Klebsiella pneumoniae

Project description:ESBL-producing Klebsiella pneumoniae

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ESBL-producing E. coli from chicken in Nigeria

Project description:ESBL-producing E. coli from chicken in Nigeria

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ESBL-producing E. coli ST206 from Nigerian poultry

Project description:ESBL-producing E. coli ST206 from Nigerian poultry

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Identification, synthesis, and in vitro activity of antimicrobial peptide from African catfish against the Extended-Spectrum Beta-Lactamase (ESBL) producing Escherichia coli.

Project description:The global surge in multi-drug resistant bacteria, including extended-spectrum β-lactamase (ESBL)-producing Escherichia coli has led to a growing need for new antibacterial compounds. Despite being promising, the potential of fish-derived antimicrobial peptides (AMPs) in combating ESBL-E. coli is largely unexplored. In this study, native peptides were extracted from the skin mucus of farmed African Catfish, Clarias gariepinus, using a combination of 10 % acetic acid solvent hydrolysis, 5 kDa ultrafiltration, and C18 hydrophobic interactions. Peptides were then sequenced using Orbitrap Fusion Lumos Tribrid Mass Spectrometry. The identified peptides were screened for potential antibacterial activity using Random Forest and AdaBoost machine learning algorithms. The most promising peptide was then chemically synthesized and evaluated in vitro for safety on Rabbit red blood cells and activity against ESBL-E. coli (ATCC 35218) utilizing the spot-on-lawn and broth dilution methods. Eight short peptides were identified with 13 - 22 amino acid residues and molecular weight range of 968.42 to 2434.11 Da. Peptide, FACAP-II was non-hemolytic to rabbit erythrocytes (p>0.05), with Zone of Inhibition (ZOI) of 22.7 mm and Minimum Inhibitory concentration (MIC) of 91.3 μg/mL. The peptide is thus a candidate antibacterial compound with enormous potential applications in the pharmaceutical industry. However, further studies are still required to establish the upscale production strategy and optimize its activity and safety in vivo.

2024-06-25 | PXD049239 | Pride

Comprehensive Assessment of Initial Adaptation of ESBL Positive ST131 E. coli to Carbapenem Exposure

Project description:Background: It remains unclear how high-risk Escherichia coli lineages, like sequence type (ST) 131, initially adapt to carbapenem exposure in its progression to becoming carbapenem resistant. Methods: Carbapenem mutation frequency was measured in multiple subclades of extended-spectrum β-lactamase (ESBL) positive ST131 clinical isolates using a fluctuation assay followed by whole genome sequencing (WGS) characterization. Genomic, transcriptomic, and porin analyses of ST131 C2/H30Rx isolate, MB1860, under prolonged, increasing carbapenem exposure was performed using two distinct experimental evolutionary platforms to measure fast vs. slow adaptation. Results: All thirteen ESBL positive ST131 strains selected from a diverse (n=184) ST131 bacteremia cohort had detectable ertapenem (ETP) mutational frequencies with a statistically positive correlation between initial ESBL gene copy number and mutation frequency (r = 0.87, P<1e-5). WGS analysis of mutants showed initial response to ETP exposure resulted in significant increases in ESBL gene copy numbers or mutations in outer membrane porin (Omp) encoding genes in the absence of ESBL gene amplification with subclade specific adaptations. In both experimental evolutionary platforms, MB1860 responded to initial ETP exposure by increasing blaCTX-M-15 copy numbers via modular, insertion sequence 26 (IS26) mediated pseudocompound transposons (PCTns). Transposase activity driven by PCTn upregulation was a conserved expression signal in both experimental evolutionary platforms. Stable mutations in Omp encoding genes were detected only after prolonged increasing carbapenem exposure consistent with clinical observations. Conclusions: ESBL gene amplification is a conserved response to initial carbapenem exposure, especially within the high-risk ST131 C2 subclade. Targeting such amplification could assist with mitigating carbapenem resistance development.

2024-08-04 | GSE273456 | GEO

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