Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 10 of 10 for “"virulence-associated genes"”.
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Comparison of prevalence of avian pathogenic Escherichia coli in South African and US poultry
… population differences occur for specific virulence - associated genes (VAGs) between operations, as well as the possible differences of virulence - associated gene (VAG) prevalence over time (2017 – 2022) within SA. The data available were also analysed to establish the potential …
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Influence of Physiological State, Prolonged Dry Storage, and Passage through Simulated Digestion on the Survival and Gene Expression of Salmonella enterica sv. Tennessee
… enterica serotypes have been linked to outbreaks associated with low water activity foods. The ability of biofilm forming pathogens, such as Salmonella, to survive thermal and chemical processes is improved; it is unclear if biofilms will also improve survival to desiccation and gastric stresses. …
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Vergleichende geno- und phänotypische Charakterisierung von Escherichia coli aus Menschen, Hausschweinen und Wildtieren
… E. coli (ExPEC) unterschieden. Die Pathogenese von E. coli-Infektionen ist durch Virulenzfaktoren determiniert, welche von jeweils spezifischen virulenzassoziierten Genen (inVAGs und exVAGs) kodiert werden. Häufig werden exVAGs auch in E. coli-Isolaten aus dem Darm gesunder Wirte …
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Untersuchungen zum Einfluss der ATP-abhängigen Protease ClpXP auf die Regulation und Expression Virulenz-assoziierter Gene des uropathogenen E. coli Stammes 536
Die ATP-abhängige Serinprotease ClpXP ist für die Kontrolle und Verfügbarkeit einer großen Anzahl von Enzymen und regulatorischer Proteine sowie für den Abbau fehlge-falteter Proteine verantwortlich. Sie besteht aus zwei Komponenten, der Protease ClpP und der ATPase ClpX, welche für die …
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Structural and functional elucidation of four putative PQS-binding proteins in Pseudomonas aeruginosa
… *P. aeruginosa* primarily co-ordinates virulence in the host through a cell-to-cell communication mechanism called quorum sensing (QS). There are three key QS systems in *P. aeruginosa* responsible for driving global changes in virulence gene expression: the *las*, *rhl*, and *pqs* …
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Identification of the virulence determinants of the neonatal meningitic bacterium Cronobacter sakazakii
… numerous outbreaks reported. Clinical cases are associated with the three species C. malonaticus, C. turicensis and, in particular, with C. sakazakii multilocus sequence type 4. The understanding of its pathogenicity is still not fully understood despite the clinical evidence, resulting in the …
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Community Structure Detection in Complex Biological Networks
… of biological data, such as interaction data of genes, proteins and metabolites. It is therefore necessary to develop ways in which these data can be efficiently modelled and analysed. Networks over a natural modelling framework for complex biological systems and as such, network theory and …
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Studies on the Role of Histone-like Proteins in Gene Regulation in Uropathogenic Escherichia coli Isolate 536
… and repression of the proU, bgl, and clyA genes. When analyzing the role of the histone-like proteins in expression of virulence-associated genes by using DNA arrays and classical phenotypic assays, most of the observed effects were mediated by the H-NS protein alone. Expression profiling …
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Population genetic frameworks and functional genomics of Mycobacterium bovis
… pyrazinamide--threatens to return tuberculosis-associated mortality rates to those of the pre-antibiotic era. The severe and growing threat of M. bovis necessitates rapid, thorough national and international surveillance of strain distribution dynamics in the population. To date, piecemeal …
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An exploratory study of Helicobacter suis control strategies
… An infection with this microorganism has been associated with erosive and ulcerative lesions in the non-glandular part of the porcine stomach and with chronic gastritis. A reduction in daily weight gain in experimentally infected pigs has been described, emphasizing the importance of H. suis …