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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.

Listeria monocytogenes adjusts its membrane fluidity, ATPase activity and atpE transcription levels in response to cold and acid stress

Badaoui Najjar, Mohamed Z. January 2009 (has links)
Thesis (Ph. D.)--Rutgers University, 2009. / "Graduate Program in Food Science." Includes bibliographical references (p. 116-130).

The role of the PI3K p110δ in innate and adaptive immune responses to Listeria monocytogenes

Pearce, Verity Quintina January 2013 (has links)
No description available.

Characterization of Listeria monocytogenes plasmids that were newly identified in whole-genome sequences of listeriosis outbreak isolates

Sagert, Jason 13 January 2014 (has links)
Listeria monocytogenes is a Gram-positive bacterium that is found ubiquitously throughout nature and is the etiologic agent of listeriosis. The majority of human listeriosis is foodborne, resulting from the consumption of unpasteurized and ready-to-eat foods that are contaminated during food processing. During the 2008 nationwide outbreak, the Gilmour laboratory performed the first real-time application of high-throughput whole-genome sequencing (WGS) of outbreak strains. Within this genomic data, the 77 kb plasmid, pLM5578, was newly identified in a clinical isolate, and additional Listeria plasmids (the 80 kb pLM5026 and the 60 kb pLM0813) were subsequently identified after WGS was completed on an expanded panel of outbreak isolates. Little was known regarding how plasmids contribute to persistence and virulence of L. monocytogenes, and to investigate these potential relationships, a panel of 147 L. monocytogenes food, environmental, and clinical isolates from Canadian public health events from the last three decades was selected for further study of the plasmids they might contain. Strain carriage of plasmids was determined using conventional PCR targeting known plasmid gene targets. Bioinformatic analyses were then used to predict the functions of individual genes encoded by each sequenced plasmid. These analyses were then used to direct experiments investigating the functions and associated phenotypes conferred by plasmid carriage. Phenotypic analyses included antimicrobial susceptibility testing, heavy metal resistance, and biofilm formation assays. Finally, WGS analyses was performed on isolates with plasmid screening patterns that indicated carriage of potential novel plasmids. Screening revealed that 75 of 147 isolates were positive for the presence of a plasmid, for which WGS analysis identified 24 unique newly identified L. monocytogenes plasmids. Phenotypically, 15 of these plasmids were found to contribute to a decreased susceptibility to the heavy metal cadmium, whereas 4 conferred resistance to the sanitizer benzalkonium chloride. Plasmid carriage was also found to affect biofilm formation. Nine plasmids correlated with stronger biofilm formation phenotypes; whereas 5 plasmids were correlated with weaker biofilm formation phenotypes. No known virulence factors or antibiotic resistance determinants were present in the DNA sequences of these 24 newly identified plasmids. Numerous coding sequences predicted to assist with survival under environmental stress were identified, and it is hypothesized that these plasmids likely contributed to persistence of L. monocytogenes within food processing environments.

Studies on the pathogenesis of listeria monocytogenes

Gregorio, Samuel Blancaflor. January 1975 (has links)
Thesis (DR. P.H.)--University of Michigan.

Development of predictive models for the growth of Listeria monocytogenes on ready-to-eat meat and poultry products

Monsalve, David. January 2008 (has links)
Thesis (Ph.D.)--University of Nebraska-Lincoln, 2008. / Title from title screen (site viewed Jan. 15, 2009). PDF text: 197 p. : ill. (some col.) ; 1.61 Mb. UMI publication number: AAT 3315877. Includes bibliographical references. Also available in microfilm and microfiche formats.

Einfluss der Phosphoenolpyruvat-Phosphotransferasesysteme auf die Aktivität des Virulenzgenregulators PrfA von Listeria monocytogenes

Stoll, Regina January 2008 (has links)
Würzburg, Univ., Diss., 2008 / Zsfassung in engl. Sprache

Molecular padlock assay of crude plant leaf extracts for detection of listeria monocytogenes /

Hurlburt, Allison L., January 2003 (has links) (PDF)
Thesis (M.S.) in Microbiology--University of Maine, 2003. / Includes vita. Includes bibliographical references (leaves 36-40).

Studies on the pathogenesis of listeria monocytogenes

Gregorio, Samuel Blancaflor. January 1975 (has links)
Thesis (DR. P.H.)--University of Michigan.

Induktion und Repression der mRNA Expression der Kernrezeptoren und die Aktivierung des Endoplasmatischen Retikulum Stresses als Antwort auf die Infektion mit Listeria monocytogenes in Makrophagen

Pillich, Helena January 2009 (has links)
Zugl.: Giessen, Univ., Diss., 2009

Entwicklung neuartiger bakterieller Vektoren zur Übertragung von zellassoziierten Antigenen, DNA und RNA auf der Basis virulenzattenuierter L. monocytogenes

Schoen, Christoph. Unknown Date (has links) (PDF)
Universiẗat, Diss., 2006--Würzburg. / Erscheinungsjahr an der Haupttitelstelle: 2005.

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