Acinetobacter
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA1207204 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:Isolation of a blaNDM-1-positive strain in Israel predating the earliest observations from India
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Project description:Cefiderocol (CFDC) is a novel chlorocatechol-substituted siderophore approved to treat complicated urinary tract infections and for hospital-acquired and ventilator-acquired pneumonia. In previous work, human fluids, were shown to increase the minimum inhibitory concentration (MICs) of Acinetobacter baumannii against CFDC and reduce the expression of genes related to iron uptake systems, which could explain the need for higher concentrations of CFDC to exert inhibitory action. Herein, we analyzed the impact of human urine (HU), which contains low albumin concentrations, on the expression of iron-uptake related genes and MIC values of two carbapenem-resistant A. baumannii. Levels of resistance to CFDC were not modified by HU in strain AMA40 but were reduced in the case of strain AB5075. Testing other carbapenem-resistant A. baumannii isolates showed that the CFDC MICs were unmodified or reduced in the presence of HU. The expression of piuA, pirA, bauA, and bfnH determined by qRT-PCR was enhanced in both strains when HU was present in the culture medium. All four tested genes are involved in recognizing ferric siderophore complexes or internalization into the cell’s cytosol. In contrast, the effect of HU on genes associated with resistance to β-lactams, antibiotics commonly used to treat urinary tract infections caused by A. baumannii, was variable; the transcriptional analysis of pbp1, pbp3, blaOXA-51-like, blaADC, and blaNDM-1 showed significant variation. In summary, HU, probably due to the albumin and free iron content, does not adversely impact or slightly improves the activity of CFDC when tested against A. baumannii in urine in contrast to other human bodily fluids.
2022-06-01 | GSE201259 | GEO
Project description:The study aimed to characterize plasmids mediating carbepenem resistance in Klebsiella pneumoniae in Pretoria, South Africa. We analysed 56 K. pneumoniae isolates collected from academic hospital around Pretoria. Based on phenotypic and molecular results of these isolates, 6 representative isolates were chosen for further analysis using long reads sequencing platform. We observed multidrug resistant phenotype in all these isolates, including resistance to aminoglycosides, tetracycline, phenicol, fosfomycin, floroquinolones, and beta-lactams antibiotics. The blaOXA-48/181 and blaNDM-1/7 were manily the plasmid-mediated carbapenemases responsible for carbapenem resistance in the K. pneumoniae isolates in these academic hospitals. These carbapenemase genes were mainly associated with plasmid replicon groups IncF, IncL/M, IncA/C, and IncX3. This study showed plasmid-mediated carbapenemase spread of blaOXA and blaNDM genes mediated by conjugative plasmids in Pretoria hospitals.
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Project description:blaNDM-positive live poultry market sample
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Project description:A bovine oligo microarray platform (GPL7053) was used to profile gene expression from twenty-five (25) bovine biceps brachii samples randomly collected at the slaughterhouse. Four (4) of these animals were suspected for corticosteroids treatment at tymus histological analyses. Eighteen (18) negative controls animals were also included. Analysis with PAM (Prediction Analysis of Microarray) identified ten (10) genes as potential biomarkers that best discriminated control animals from the animals suspected for corticosteroids treatment.
2012-12-20 | GSE26318 | GEO
Project description:This experiment is design to evaluate genomic alteration following stably expression of miR-1245, stably knock down of BRCA2 is setup as a positive control Primary normal breast epithelial cells (NBEC) were collected from the mammoplasty material of a 30-year-old woman at the Department of Plastic Surgery, the First Affiliated Hospital of Sun Yat-sen University (P. R. China), in accordance with rules and regulations concerning ethical issues on research use of human subjects in China, and were cultured in the Keratinocyte serum-free medium (Invitrogen, Carlsbad, CA) supplemented with epithelial growth factor, bovine pituitary extract and antibiotics (120 µg/mL streptomycin and 120 µg/mL penicillin). NBEC were infected with virus produced from retro vector pMSCV-miR1245 or empty pMSCV vector; or pSuper Retro BRCA2 shRNA, or pSuper Retro empty vector. After 2 days infection and 3 days culture, genomic DNA was isolated using the QIAamp DNA Mini Kit (QIAGENE, Valencia, CA). CGH microarray hybridization, data generation and normalization were performed in Shanghai Biochip Corporation.
2011-03-23 | E-GEOD-26715 | biostudies-arrayexpress
Project description:Genome sequencing and assembly of tet(X)-positive Acinetobacter sp. strains
| PRJNA903764 | ENA