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 9 of 9 for “"enterohemorrhagic E. coli"”.
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Post-Transcriptional Regulation of Virulence Genes by GlmY and GlmZ in Enterohemorrhagic E. Coli
Enterohemorrhagic E. coli O157:H7 (EHEC) is a major cause of foodborne illness and hemolytic uremic syndrome (HUS) throughout the world. One of the major virulence factors in this pathogen is a type III secretion system (T3SS) encoded by the locus of enterocyte effacement (LEE). EHEC uses this …
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Quantification of multiple waterborne pathogens in drinking water, drainage channels, and surface waters in Kampala, Uganda over seven months of seasonal variation
… and the public tap. Pathogens detected included Enterohemorrhagic E. coli, Shigella spp., Salmonella spp., Vibrio cholerae, and Enterovirus. Drainage channels were found to be significantly more contaminated during the wet season compared to the dry season, whereas drinking water sources …
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Characterization of QSEA and QSED in the Quorum Sensing Cascade of Enterohemorrhagic Escherichia Coli
Enterohemorrhagic E. coli O157:H7 (EHEC) is an enteric pathogen that has been implicated in many outbreaks of bloody diarrhea worldwide. EHEC senses its environment through quorum sensing, a mechanism by which bacteria use chemical signals, termed autoinducers, to regulate key genes. In the …
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The Functional Characterization of the Quorum Sensing E. Coli Regulators B and C in EHEC
Enterohemorrhagic E. coli (EHEC) is the causative agent of hemorrhagic colitis. During an infection, EHEC can sense and respond to environmental cues, including the cell density of the intestinal normal flora (through the floral-derived AI-3 signal) and the epinephrine/norepinephrine produced …
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Protein glycosylation by NleB and the secretion of therapeutic nanobody fusions
Escherichia coli and Salmonella enterica are Gram-negative bacteria that are among the leading causes of gastrointestinal tract infections. These bacteria interact with mammalian hosts by using a type III secretion system (T3SS) to secrete effectors into host cells. NleB and SseK are two E. coli …
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Interplay Between Tryptophan Metabolites and the Virulence Factors of Enteric Pathogens
… an invading food-borne pathogen such as Enterohemorrhagic Escherichia coli (EHEC), which causes gastroenteritis by primarily colonizing the human colon, sense these small molecules and respond in a way that is conducive for its colonization and virulence gene expression. The role of these …
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Structural and Mechanistic Roles of Novel Chemical Ligands on Quorum Sensing Transcription Regulator SdiA in Enterohemorrhagic Escherichia coli
… [1]. However, some bacteria such as Escherichia coli (E. coli) do not produce AHLs and, therefore, their quorum sensing LuxR-type proteins are thought to be regulated by AHLs from other bacteria [2-4]. These sub-family of LuxR proteins known as LuxR solos can also regulate and detect non-AHL …
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Characterization of Campylobacter, Salmonella, and Diarrheagenic Escherichia Coli from Food, Food Waste and Water in the Chobe Region of Botswana
… like Campylobacter, Salmonella enterica, and E. coli. Resistance to commonly used antibiotics is on the rise, making them difficult to manage. This study aimed to determine prevalence and antibiotic resistance profiles of Campylobacter, S. enterica, and E. coli isolated from food, food waste, and …
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Development of Novel Methods to Study Host-Microbe Interactions In The Larval Zebrafish Gastrointestinal Tract
… colonization and virulence gene expression of enterohemorrhagic <em>Escherichia coli</em> (EHEC). My findings suggest that a functional ENS plays a crucial role in shaping intestinal disease outcomes.</p> <p>The intestinal epithelium, a critical barrier against pathogens, toxins, and other …