Microbiological Sciences: Recent submissions
Now showing items 21-40 of 60
-
Interactions of Aspergillus fumigatus and Pseudomonas aeruginosa Contribute to Respiratory Disease Severity and Death
(North Dakota State University, 2019)The lung was recently identified to consist of a complex microenvironment made up of microorganisms that interact with one another and the host cells via direct and indirect interactions. As a result, understanding the ... -
Heterogeneity in Phenotypic Response of Foodborne Pathogens to Control Measures
(North Dakota State University, 2019)Foodborne pathogens are estimated to cause 48 million foodborne illnesses through consumption of contaminated food annually. Designing efficient control measures is vital to reducing foodborne illnesses. The modern trend ... -
RNA Viral Prophylaxis: Problems and Potential Solutions
(North Dakota State University, 2019)Over 80% of the newly emerging infectious diseases are caused by RNA viruses. Major global problems associated with the development of vaccines against the RNA virus are their high genetic and antigenic diversity. Hence, ... -
Characterizing the Impact of Stress Exposure on Survival of Foodborne Pathogens
(North Dakota State University, 2019)Bacterial pathogens transmitted by the fecal-oral route endure several stresses during survival/growth in host and non-host environments. For foodborne pathogens, understanding the range of phenotypic responses to stressors ... -
Gene Regulation in Biofilms
(North Dakota State University, 2011)Sessile bacterial communities which form on the solid surface or solid-liquid interface are known as biofilms. Both single species and multispecies biofilms are characterized by an extracellular matrix of polymeric ... -
Investigation of Nutrients as Treatments of Bacterial Biofilms
(North Dakota State University, 2019)Using nutrients bacteria utilize to grow as treatments of bacterial biofilms have been investigated. This dissertation examines the problem of the prevention and treatment of biofilms by: (i) testing the effect of the ... -
Phenotypic and Genotypic Effects of FlhC Mediated Gene Regulation in Escherichia Coli O157:H7
(North Dakota State University, 2011)Escherichia coli (E.coli) 0157:H7, a pathogen belonging to the enterohemorrhagic group of E.coli, has long been a concern to human health. The pathogen causes a myriad of symptoms in humans, ranging from diarrhea and malaise ... -
Biofilm Formation of Escherichia coli from Surface Soils is Influenced by Variation in Cell Envelope, Iron Metabolism, and Attachment Factor Genes
(North Dakota State University, 2018)Biofilm formation may increase survival and persistence of Escherichia coli in the highly variable conditions of soil environments, though it remains unknown the extent variation in biofilm formation affects survival. We ... -
Genetic Disruption of VIP Signaling Alters Intestinal Microbial Structure and Immunity
(North Dakota State University, 2018)Vasoactive intestinal peptide (VIP) regulates clock gene expression in the brain that synchronizes diurnal feeding behaviors in mammals. In the gastrointestinal (GI) tissues, VIP influences host nutrient absorption from ... -
Attachment and Biofilm Formation of Foodborne Pathogens
(North Dakota State University, 2017)Outbreaks of Listeria monocytogenes, Salmonella, and Escherichia coli are increasingly attributed to fresh produce. Current control measures have been assessed for decades, with no alternatives adopted. Sources were ... -
Glucose Uptake by the Cellulolytic Rumen Anaerobe Bacteroides Succinogenes
(North Dakota State University, 1986)Glucose uptake by the cellulclytic rumen anaerobe, Bacteroides succinogenes S85, was measured under conditions that maintained anaerobiosis and osmotic stability. This organism was found to possess a highly specific, active ... -
16S Ribosomal RNA and Phylograms: Characterizing Student Reasoning to Learning Outcomes from the American Society for Microbiology Curriculum
(North Dakota State University, 2017)The American Society for Microbiology (ASM) has established a suggested curriculum for introductory microbiology courses that includes a focus on evolution. However, no data is published to describe how proficiently students ... -
A Porcine Circovirus Vaccine with Enhanced Capabilities
(North Dakota State University, 2016)Porcine circovirus type 2 (PCV2) is a pathogen of swine. Vaccines against PCV2 are available, although none are capable of differentiating infected from vaccinated animals (DIVA). Positive and negative DIVA markers were ... -
The Effects of Acetoacetic Acis on Bacterial Growth and Biofilm Formation of Cronobacter Sakazakii, Serratia Marcescens, and Yersinia Enterocolitica
(North Dakota State University, 2016)Prevention of bacterial biofilms is an area of research currently being investigated by many research teams. The ability of a chemical to be incorporated into a material that could be used in a medical or food production ... -
Assessment of Vacuum Steam Pasteurization to Improve Safety and Quality of Low Moisture Foods
(North Dakota State University, 2016)Low moisture foods such as grains, seeds, spices and flour are part of our daily diet. While they are rich in bioactive compounds, they can be minimally processed or often consumed raw. Several outbreaks due to Salmonella ... -
Variability in Plant Growth Promoting Properties Among Clinical and Environmental Isolates of Stenotrophomonas Maltophilia
(North Dakota State University, 2015)Stenotrophomonas maltophilia has both negative and positive attributes by being a human pathogen and plant growth promoting rhizobacterium. This study sought to determine if environmental and clinical isolates of S. ... -
Physical and Chemical Treatments for Bacterial Biofilms
(North Dakota State University, 2014)Physical and chemical treatments have been investigated for the treatment to remove biofilms. This thesis examines the problem of the removal and prevention of biofilms by: (i) using a water jet to determine biofilm stability ... -
Cronobacter Sakazakii Characterization and Analysis of Cytotoxicity in Microvascular Endothelial Cells
(North Dakota State University, 2014)Contamination of powdered infant formulas by the bacteria Cronobacter sakazakii can pose serious risk to infants and neonates who consume the formula and subsequently develop C. sakazakii related illnesses such as sepsis ... -
Gene Expression and Evolution in Escherichia Coli Biofilm
(North Dakota State University, 2014)Biofilms can be defined as a complex aggregation of bacterial communities that involves many gene regulatory mechanisms, as well as evolutionary processes to increase biodiversity. Specific Aim 1 used a gene regulation ... -
Characterization of a Novel Cryptosporidium Genotype in Red-Winged Black Birds
(North Dakota State University, 2014)Cryptosporidium species cause cryptosporidiosis, characterized by acute gastroenteritis in humans and animals worldwide. Knowledge of the diversity of Cryptosporidium among mammals and birds is incomplete, especially in ...