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Filtering by: Creator Hase, Claudia C. Remove constraint Creator: Hase, Claudia C. Degree Name Doctor of Philosophy (Ph.D.) Remove constraint Degree Name: Doctor of Philosophy (Ph.D.)

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  • 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
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    : _____________________________________________________ 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
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    C. Häse The pathogen Vibrio cholerae uses cations as a primary currency of virulence and

  • Comparative genomics of Vibrio and characterizing microbial communities at a shellfish hatchery

    Creator:
    Delgado, Hanna
    Abstract:
    Vibrio bacteria are commonly found in freshwater, marine, and estuarine environments. Members of this genus can exist in commensal relationships with marine animals or as planktonic bacteria, however, they are well known for their roles as pathogens towards humans and animals. In this dissertation, I investigated aspects of host-bacteria relationships...
    Resource Type:
    Dissertation
    Full Text:
    /10.1186/s12864-020-6471-x Elston, R., Hasegawa, H., Humphrey, K., Polyak, I., Häse, C., 2008. Re

  • Advancing Nanotechnology for Photoacoustic Imaging

    Creator:
    St Lorenz, Anna
    Abstract:
    Curbing overall disease burden with faster intervention requires early stage and accurate diagnostics. Ultrasound (US) provides a safe, nonionizing, inexpensive, and noninvasive imaging modality that has become commonplace in diagnostics. Paired with the relatively new technology of photoacoustic imaging (PAI), optical level resolution becomes feasible with the deeper signal penetration...
    Resource Type:
    Dissertation
    Full Text:
    Taratula, Dr. Theresa Filtz, Dr. Adam Alani, Dr. Claudia Hase. Chapter 1 This chapter was written by

  • Clostridium perfringens sporulation and gliding motility

    Creator:
    Huang, I-Hsiu
    Abstract:
    Clostridium perfringens type A isolates, an anaerobic enterotoxigenic spore forming bacterium, are the third leading cause of food-borne disease in the United States. Factors that contribute to the virulence of C. perfringens include the ability of the bacterium to form heat resistant spores and to produce an enterotoxin (CPE). Although...
    Resource Type:
    Dissertation
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    . Also many thanks to my committee members, Dr. Luiz Bermudez, Dr. Claudia Hase, Dr. Emily Ho, Dr. Dan

  • Characterization of Sporulation and Germination Genes in Clostridium perfringens

    Creator:
    Talukdar, Prabhat Kumar
    Abstract:
    Clostridium perfringens is a Gram-positive, anaerobic, spore-forming bacterium that can produce as many as 17 different toxins and are responsible to cause a wide array of gastrointestinal (GI) and histotoxic diseases in humans and animals. As individual strains produce a subset of these toxins, C. perfringens strains can be classified...
    Resource Type:
    Dissertation
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    . Daniel Rockey, Dr. Claudia Hase and Dr. Kathy O’Reilly for serving as my committee members. I am

  • New Insights into the Molecular Mechanism of Clostridium perfringens Spore Germination

    Creator:
    Banawas, Saeed S.
    Abstract:
    C. perfringens is a spore-forming, gram-positive, anaerobic pathogenic bacterium capable of causing a wide variety of diseases in both humans and animals. However, the two most common illnesses in humans are C. perfringens type A food poisoning (FP) and non-food-borne (NFB) gastrointestinal (GI) illnesses. Interestingly, these two major diseases are...
    Resource Type:
    Dissertation
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    , Dr. Claudia Häse and Dr. Jean Hall, who offered guidance and support. I would like to thank all

  • Low-temperature depuration and low-temperature high hydrostatic pressure processing as post-harvest interventions for diminishing Vibrio parahaemolyticus contamination in oysters

    Creator:
    Phuvasate, Sureerat
    Abstract:
    Vibrio parahaemolyticus is a leading cause of acute gastroenteritis associated with consumption of seafood, particularly raw oysters. The United States Centers for Disease Control and Prevention (CDC) estimated that 45,000 cases of V. parahaemolyticus infection occur each year in the U.S. A recent CDC report revealed that the incidence of...
    Resource Type:
    Dissertation
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    committee members: Dr. Mahfuzur Sarker, Dr. Claudia Häse, Dr. Joy Waite-Cusic, Dr. Mary Cluskey and Dr

  • Aqueous complexation of citric acid and DTPA with selected trivalent and tetravalent f-elements

    Creator:
    Brown, M. Alex
    Abstract:
    Carboxylic acids have played an important role in the field of actinide (An) and lanthanide (Ln) separations and the reprocessing of irradiated nuclear fuel. Recent bench-scale experiments have demonstrated that 3-carboxy-3-hydroxypentanedioic acid (citric acid) is a promising aqueous complexant that can effectively aid in the separation of transition metals from...
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    Dissertation
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    constants with Nd 3+ are logβ = 2.7, 7.9, and 21.6, respectively (I = 0.1M, 25°C). 13 The increase in

  • Quorum sensing gene regulation in Pseudomonas aeruginosa

    Creator:
    Gupta, Rashmi
    Abstract:
    Pseudomonas aeruginosa is an opportunistic human pathogen that infects immunocompromised individuals such as those suffering from burns or the genetic disorder cystic fibrosis. This organism utilizes a cell-cell communication mechanism known as quorum sensing (QS) to coordinate virulence gene expression and biofilm formation. It has three interconnected QS systems, namely...
    Resource Type:
    Dissertation
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    . Claudia Häse, and Dr. Taifo Mahmud for their commitment and interest in my work and for useful