Index Catalog // ScholarsArchive@OSU

Investigating Vibrio parahaemolyticus interactions with the Pacific oyster, Crassostrea gigas

Creator:: Aagesen, Alisha M.
Abstract:: Vibrio parahaemolyticus is a Gram-negative, halophilic, human pathogenic bacterium ubiquitous in the marine environment. Like many Vibrio species, V. parahaemolyticus commonly associates with shellfish, particularly oysters. Ingestion of a raw or under cooked oysters contaminated with V. parahaemolyticus can cause gastroenteritis, which is typically self-limiting and rarely causes death. Globally,...
Resource Type:: Dissertation
Full Text:: : _____________________________________________________ Claudia C. Häse Vibrio parahaemolyticus is a Gram-negative, halophilic, human

Molecular and genetic assessment of selected antiporters and methyl-accepting chemotaxis proteins in Vibrio cholerae

Creator:: Quinn, Matthew J.
Abstract:: The pathogen Vibrio cholerae uses cations as a primary currency of virulence and environmental persistence, using gradients of those cations to move, acquire nutrients, and control virulence gene expression. An understanding of the overlapping roles of bioenergetics and chemotaxis in the virulence and environmental survival of V. cholerae issues from...
Resource Type:: Dissertation
Full Text:: C. Häse The pathogen Vibrio cholerae uses cations as a primary currency of virulence and

Chemotaxis of Vibrio Cholerae

Creator:: Dishion, Evan and Glover, Rochelle
Abstract:: The purpose of this project is to study which methyl-accepting chemotaxis proteins (MCPs) are related to chemotaxis of Vibrio cholerae. 44 MCP mutant strains were tested in seven different chemoattractants and the resulting swarm circle size was compared to that of C6706 lac-Z wildtype. Several genes were identified that resulted...
Resource Type:: Poster

Sodium/Proton Antiporter Activity is Essential for Virulence of Yersinia pestis

Creator:: Faulkner, Wyatt J., Ghosh, Amit, Minato, Yusuke, Winogrodzki, Judith, Lind, Erin, Plano, Gregory V., Hinnebusch, Joseph B., Dibrov, Pavel, and Häse, Claudia C.
Abstract:: We found that a strains of Yersinia pestis (KIM5) which lacked the nhaA gene was fully attenuated in a plague model. This gene produces a protein of the sodium-proton antiporter family which expel sodium ions from the bacterial cytoplasm in exchange for hydrogen ions, or protons, from the surrounding environment....
Resource Type:: Poster

Characterization of the Sodium Transporting NADH:Quinone Oxidoreductase (NQR) in Vibrio cholerae

Creator:: Fassio, Sara R.
Abstract:: Vibrio cholerae is the causative agent of cholera, a serious diarrheal disease in developing countries. V. cholerae has a unique redox driven respiration-linked sodium pump, Na⁺ translocating NADH:quinone oxidoreductase (NQR). Several reports previously showed that NQR plays an important role in virulence, metabolism, and sodium homeostasis of V. cholerae. This...
Resource Type:: Honors College Thesis
Full Text:: : _____________________________________________________ Claudia C. Häse   Vibrio cholerae is the causative agent of cholera, a serious diarrheal

Prevalence of the Haemonchus sp. parasite in Oregon cattle

Creator:: Castle, Kayla
Abstract:: Haemonchus sp. is known to be present in geographical regions of Oregon that are more arid and warm, which has been the preferred climate of this parasite. However, it was not detected in Western Oregon bovine until recently. Haemonchus sp. was first detected in Western Oregon bovine from a fecal...
Resource Type:: Honors College Thesis
Full Text:: : ___________________________________________________ Claudia Häse Haemonchus sp. is known to be present in geographical regions of Oregon that

Identification of an aerotaxis transducer in Vibrio cholerae

Creator:: Boin, Markus A.
Abstract:: The ability to move towards favorable environmental conditions, called chemotaxis, is common among motile bacteria. In particular aerotaxis has been extensively studied in Escherichia coli. Three putative aer gene homologs were identified in the V. cholerae genome designated VCAer-1 (VC0512) VCAer-2 (VCA0658), and VCAer-3 (VCA0988). Deletion analyses indicated that only...
Resource Type:: Masters Thesis
Full Text:: : Claudia Häse The ability to move towards favorable environmental conditions, called chemotaxis

Role of Na+/H+ Membrane Bioenergetics in Virulence Factors of Pseudomonas aeruginosa

Creator:: Hoang, Kelli H.
Abstract:: Pseudomonas aeruginosa is a bacterial pathogen that can cause grave and sometimes chronic infections in patients with weakened immune systems and cystic fibrosis. It is suspected that specialized sodium pumps in the cellular membrane are crucial for the organism’s survival and growth, since many cellular processes rely on the maintenance...
Resource Type:: Honors College Thesis
Full Text:: :_____________________________________________________ Claudia Häse Pseudomonas aeruginosa is a bacterial pathogen that can cause grave and sometimes

The Role of NhaP1, NhaP2, and NhaP3 Antiporters in the Acid Tolerance of Vibrio cholerae

Creator:: Gillon, Jacqueline and Schubiger, Carla
Abstract:: Vibrio cholerae (Vc), the etiological agent of cholera, has developed many mechanisms to combat the great fluctuations in pH, ion content and osmotic conditions of the vastly differing environments it encounters through its infections of the human host. A series of cation antiporters are found in the Vc membrane to...
Resource Type:: Undergraduate Thesis and Presentation

Laboratory studies of growth conditions of Vibrio parahaemolyticus in Pacific oyster (Crassostrea gigas) with international considerations to shellfish-associated illnesses in South Korea

Creator:: Lee, Jeehye
Abstract:: Vibrio parahaemolyticus, a naturally occurring halophilic pathogen, is seasonally abundant in marine and estuarine environments. It is also the leading cause of gastroenteritis in humans world-wide. Numerous outbreak incidences associated with the pathogenic Vibrio parahaemolyticus contaminations in oyster products have raised public-health concerns as well as economic challenges to the...
Resource Type:: Undergraduate Thesis
Full Text:: _______________ Claudia Häse, Microbiology Department Date

ScholarsArchive@OSU

Investigating Vibrio parahaemolyticus interactions with the Pacific oyster, Crassostrea gigas

Molecular and genetic assessment of selected antiporters and methyl-accepting chemotaxis proteins in Vibrio cholerae

Chemotaxis of Vibrio Cholerae

Sodium/Proton Antiporter Activity is Essential for Virulence of Yersinia pestis

Characterization of the Sodium Transporting NADH:Quinone Oxidoreductase (NQR) in Vibrio cholerae

Prevalence of the Haemonchus sp. parasite in Oregon cattle

Identification of an aerotaxis transducer in Vibrio cholerae

Role of Na+/H+ Membrane Bioenergetics in Virulence Factors of Pseudomonas aeruginosa

The Role of NhaP1, NhaP2, and NhaP3 Antiporters in the Acid Tolerance of Vibrio cholerae

Laboratory studies of growth conditions of Vibrio parahaemolyticus in Pacific oyster (Crassostrea gigas) with international considerations to shellfish-associated illnesses in South Korea

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