Ontology highlight
ABSTRACT:
PROVIDER: PRJNA417025 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:A triclosan-ciprofloxacin cross-resistant mutant strain of Staphylococcus aureus displays an alteration in the expression of several cell membrane structural and functional genes. Triclosan is an antimicrobial agent found in many consumer products. Several studies have demonstrated that triclosan inhibits the bacterial fatty acid biosynthetic enzyme, enoyl-ACP reductase (FabI). Studies have also demonstrated that decreased susceptibility to triclosan correlates with ciprofloxacin resistance in several bacteria. In these bacteria, resistance to both drugs maps to genes encoding multi-drug efflux pumps. The focus of this study was to determine whether triclosan resistance contributes to ciprofloxacin resistance in Staphylococcus aureus. Gene expression profiling was performed to compare the gene expression profiles of unexposed and triclosan-exposed wild-type and JJ5 determined that an alteration in global gene expression possibly resulting in a change in cell membrane structure and function is likely responsible for triclosan and ciprofloxacin resistance in JJ5. Keywords: Treatment response
2008-01-11 | GSE5799 | GEO
Project description:A triclosan-ciprofloxacin cross-resistant mutant strain of Staphylococcus aureus displays an alteration in the expression of several cell membrane structural and functional genes. Triclosan is an antimicrobial agent found in many consumer products. Several studies have demonstrated that triclosan inhibits the bacterial fatty acid biosynthetic enzyme, enoyl-ACP reductase (FabI). Studies have also demonstrated that decreased susceptibility to triclosan correlates with ciprofloxacin resistance in several bacteria. In these bacteria, resistance to both drugs maps to genes encoding multi-drug efflux pumps. The focus of this study was to determine whether triclosan resistance contributes to ciprofloxacin resistance in Staphylococcus aureus. Gene expression profiling was performed to compare the gene expression profiles of unexposed and triclosan-exposed wild-type and JJ5 determined that an alteration in global gene expression possibly resulting in a change in cell membrane structure and function is likely responsible for triclosan and ciprofloxacin resistance in JJ5. Keywords: Treatment response WT and triclosan resistant mutant were treated with triclosan and their gene expression was compared to their untreated conterparts.
2010-05-26 | E-GEOD-5799 | biostudies-arrayexpress
Project description:Characterization of naphthenic acid degrading bacteria
| PRJEB31809 | ENA
Project description:Triclosan is a biocidal active agent commonly found in domestic cleaning products, hand sanitizers, cosmetics and personal care products. It is used to control microbial contamination and has a broad-spectrum of activity against many Gram-positive and Gram-negative bacteria. The development of triclosan tolerance with potential cross resistance to clinically relevant antibiotics in zoonotic pathogens is of concern given the widespread use of this active agent in clinical, food processing and domestic environments. Some studies have proposed that an over-dependence on triclosan-containing products could lead to the emergence of clinically important pathogens that are highly tolerant to both biocides and antibiotics. Currently, there is limited understanding of the mechanisms contributing to the emergence of triclosan tolerance in foodborne pathogens at a genetic level. We used microarray analysis to compare gene expression between a wildtype E. coli O157:H19 isolate (WT) with a minimum inhibitory concentration (MIC) to triclosan of 6.25 ug/ml and its laboratory generated triclosan tolerant mutant (M) with a MIC of >8000 ug/ml.
2013-10-15 | GSE39343 | GEO
Project description:Triclosan is a biocidal active agent commonly found in domestic cleaning products, hand sanitizers, cosmetics and personal care products. It is used to control microbial contamination and has a broad-spectrum of activity against many Gram-positive and Gram-negative bacteria. The development of triclosan tolerance with potential cross resistance to clinically relevant antibiotics in zoonotic pathogens is of concern given the widespread use of this active agent in clinical, food processing and domestic environments. Some studies have proposed that an over-dependence on triclosan-containing products could lead to the emergence of clinically important pathogens that are highly tolerant to both biocides and antibiotics. Currently, there is limited understanding of the mechanisms contributing to the emergence of triclosan tolerance in foodborne pathogens at a genetic level. We used microarray analysis to compare gene expression between a wildtype E. coli O157:H19 isolate (WT) with a minimum inhibitory concentration (MIC) to triclosan of 6.25 ug/ml and its laboratory generated triclosan tolerant mutant (M) with a MIC of >8000 ug/ml. Gene expression profiling was performed on untreated E. coli O157:H19 wildtype (WTu) and mutant (Mu), and on the wildtype and mutant treated with 6 ug/ml triclosan for 30 minutes (WTt and Mt respectively). RNA was extracted from three independent biological replicates for WTu, Mu, WTt & Mt for hybridization on Affymetrix GeneChip E. coli Genome 2.0 Arrays. Micorarray analysis including pre-processing, normalisation and statistical analysis were performed using R (R, 2007) version 2.6 and Bioconductor (Gentleman et al. 2004, Genome Biol. 5:R80) version 2.1 as previously described by Morris et al.(2009, Physiol. Genomics 39:28-37).
2013-10-15 | E-GEOD-39343 | biostudies-arrayexpress