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 20 of 263 for “"commensal"”.
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Functional genomics of motile commensal intestinal bacteria
… ruminis, an autochthonous intestinal commensal, was studied. The flagellum-biogenesis genotypes of motile enteric Eubacterium and Roseburia species were also investigated. Flagellin proteins were recovered from these commensal species, their amino-termini were sequenced and the …
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Commensal-specific immune responses at the intestinal mucosa
… pathogenic species. In return, the host provides commensals with a habitat rich in energy derived from ingested food. The intestinal immune system faces the daunting task of maintaining homeostasis despite the enormous load and diversity of antigens present at this site. Failure to maintain this …
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StreamJIT : a commensal compiler for high-performance stream programming
… compared to building a library. We propose commensal compilation, a new strategy for compiling embedded domain-specific languages by reusing the massive investment in modern language virtual machine platforms. Commensal compilers use the host language's front-end, use an autotuner instead of …
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Quorum Sensing and Virulence Regulation in Commensal and Pathogenic Bacteria
… investigates peptide-mediated QS regulation in commensal and opportunistic pathogenic streptococci, with particular emphasis on the development of synthetic QS modulators and the characterization of noncanonical signaling behaviors. Chapter 1 reviews the historical development of QS research and …
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Biochemical Studies of Peptidoglycan Hydrolases from Commensal and Pathogenic Bacteria
… cell wall, or peptidoglycan, fragments from commensal and pathogenic bacteria can activate host immunity. The mechanism(s) by which immunologically active peptidoglycan fragments are generated, however, are not well-understood. In this regard, peptidoglycan hydrolases are ubiquitous in …
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TFR Cells Suppress Gut Commensal-Specific IgA Via IL-10
… role in intestinal defense and regulation of gut commensals. A large amount of IgAcoated gut commensals is generated via T cell-independent pathways. However, highaffinity, antigen-specific IgA Abs are produced through T cell help in the germinal centers of gut-associated lymphoid tissues. Through …
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Characterising antibiotic susceptibility and resistance in human commensal gut bacteria
… susceptibility and resistance in human commensal gut bacteria The human commensal gut microbiota can act as a reservoir of antimicrobial resistance genes that can persist and spread to pathogens. However, the extent and diversity of antibiotic resistance encoded by human commensal …
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Evaluating the Co-commensal Lifestyles of Staphylococcus aureus and Staphylococcus epidermidis
Staphylococcus epidermidis is a ubiquitous skin commensal, and produces a serine protease Esp that can eradicate nasal carriage of the opportunistic pathogen, Staphylococcus aureus. We evaluated the ability of S. epidermidis and S. aureus to express serine protease and compete with one another in …
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From Flare to Repair: Commensal Bacteria's Influence on Inflammation and Wound Healing
… microbes are absent, and if there are specific commensals that may attenuate inflammation. To that end, Chapter 3 demonstrates that IL-10 deficiency leads to both lung and gut inflammation, which was dependent on commensal bacteria. Two candidate bacteria, Delftia acidovorans and Rhodococcus …
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STRUCTURE-FUNCTION STUDIES OF MULTIPLE INOSITOL POLYPHOSPHATE PHOSPHATASES FROM GUT COMMENSAL BACTERIA
… is found in humans where several members of the commensal bacteria have been found to produce multiple inositol polyphosphate phosphatases (Minpp) which display phytase activity. In this study, high resolution X-ray crystal structures of Minpps from two human commensal gut bacteria, Bacteroides …
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SKIN COMMENSAL STAPHYLOCOCCUS PROMOTES SYSTEMIC V-GAMMA-6 GAMMA-DELTA T CELL RECONFIGURATION
… Skin-resident Staphylococcus aureus is a common commensal bacterium found in healthy individuals. This study demonstrates that, in mice, skin colonization by topical association with S. aureus reshapes systemic lymphocyte pools across lymphoid and non-lymphoid tissues. Notably, S. aureus skin …
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Characterization of Clinical and Commensal Escherichia coli Isolates from an Integrated Turkey Operation
Pathogenic E. coli infections cause approximately one quarter of disease losses in commercial turkey flocks. A small subgroup of E. coli causes most infections. Epidemiologic studies of this disease have been hindered by a lack of reliable markers to discriminate between pathogenic and fecal E. …
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Commensal searches for radio transients variables in the data from Mhongoose Large Survey Project
The MeerKAT radio telescope in South Africa, a precursor to the mid-frequency component of the Square Kilometre Array (SKA1-Mid), offers exceptional sensitivity and a wide field of view, making it ideal for exploring time-domain radio astronomy. This dissertation presents the use of MeerKAT images …
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Case Studies in Ancient Maya Human-Animal Relations: El Perú, La Corona, and Commensal Mammals
… Guatemala, and to investigate the roles of commensal mammals in ancient economic and belief systems. The discussion is centered on a ritual-economic analysis of human-animal relations as revealed by the presented data.The La Corona sample is derived from a high elite feasting context …
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Differential expression profiling of proteomes of pathogenic and commensal strains of Staphylococcus aureus using SILAC
… bovines. S. aureus is also known to exist as a commensal on skin, nose and other mucosal surfaces of the host. This symbiotic association is a result of immune dampening or tolerance induced in the host by this pathogen. We proposed the variation in protein expression by commensal and pathogenic …
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Assessment of antibiotic resistance phenotypic patern in some commensal bacteria isolated from meat and dairy products
… the pattern of antibiotic resistance in some commensal bacteria isolated from meat and dairy products. This study is important because, antibiotics resistance has become a serious public health concern with economic and social implications throughout the world. The use of antibiotics in animal …
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EARLY-LIFE EXPOSURES TO SPECIFIC COMMENSAL MICROBES TRAIN THE IMMUNE SYSTEM AND PREVENT TYPE 1 DIABETES
… a critical time window in which specific commensal microbes induce tolerance. During this critical time window of early-life colonization and immune development, specific microbes unexpectedly translocate from the gut to peripheral tissues in a process we call “physiologic translocation”. …
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