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• W2099619283 endingPage "4037" @default.
• W2099619283 startingPage "4019" @default.
• W2099619283 abstract "ABSTRACT Vibrio vulnificus multiplies rapidly in host tissues under iron-overloaded conditions. To understand the effects of iron in the physiology of this pathogen, we performed a genome-wide transcriptional analysis of V. vulnificus growing at three different iron concentrations, i.e., iron-limiting [Trypticase soy broth with 1.5% NaCl (TSBS) plus ethylenediamine-di-( o -hydroxyphenylacetic) acid (EDDA)], low-iron (1 μg Fe/ml; TSBS), and iron-rich (38 μg Fe/ml; TSBS plus ferric ammonium citrate) concentrations. A few genes were upregulated under the last two conditions, while several genes were expressed differentially under only one of them. A gene upregulated under both conditions encodes the outer membrane porin, OmpH, while others are related to the biosynthesis of amino sugars. An ompH mutant showed sensitivity to sodium dodecyl sulfate (SDS) and polymyxin B and also had a reduced competitive index compared with the wild type in the iron-overloaded mice. Under iron-limiting conditions, two of the TonB systems involved in vulnibactin transport were induced. These genes were essential for virulence in the iron-overloaded mice inoculated subcutaneously, underscoring the importance of active iron transport in infection, even under the high-iron conditions of this animal model. Furthermore, we demonstrated that a RyhB homologue is also essential for virulence in the iron-overloaded mouse. This novel information on the role of genes induced under iron limitation in the iron-overloaded mouse model and the finding of new genes with putative roles in virulence that are expressed only under iron-rich conditions shed light on the many strategies used by this pathogen to multiply rapidly in the susceptible host." @default.
• W2099619283 created "2016-06-24" @default.
• W2099619283 creator A5006131701 @default.
• W2099619283 creator A5029887051 @default.
• W2099619283 creator A5091878259 @default.
• W2099619283 date "2008-09-01" @default.
• W2099619283 modified "2023-10-12" @default.
• W2099619283 title "Global Gene Expression as a Function of the Iron Status of the Bacterial Cell: Influence of Differentially Expressed Genes in the Virulence of the Human Pathogen <i>Vibrio vulnificus</i>" @default.
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• W2099619283 doi "https://doi.org/10.1128/iai.00208-08" @default.
• W2099619283 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/2519419" @default.
• W2099619283 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/18573903" @default.
• W2099619283 hasPublicationYear "2008" @default.
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