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Articles 691 - 704 of 704
Full-Text Articles in Genetics and Genomics
Glial Cell Mechanisms Regulate Alcohol Sedation In Drosophila Melanogaster, Kristen M. Lee
Glial Cell Mechanisms Regulate Alcohol Sedation In Drosophila Melanogaster, Kristen M. Lee
Theses and Dissertations
Approximately 16 million people in America are diagnosed with Alcohol Use Disorder (AUD) but no efficacious medical treatments exist. Alcohol-related behaviors can be studied in model organisms, and changes in these behaviors can be correlated with either (i) a risk for alcohol dependence or (ii) a symptom/feature of AUD itself. Although AUD is a disease of the central nervous system, a majority of research has focused on the neuronal underpinnings, leaving glial contributions largely undescribed. We used Drosophila melanogaster (fruit fly) to identify genes whose expression in glia regulates alcohol sedation. Mammals and Drosophila have conserved behavioral responses to alcohol …
Genetic And Environmental Factors Influence Drosophila Ethanol Sedation, Rebecca E. Schmitt
Genetic And Environmental Factors Influence Drosophila Ethanol Sedation, Rebecca E. Schmitt
Theses and Dissertations
Alcohol use disorder is a global health issue that affects a significant portion of the population, with affects including both negative mental and physical consequences. Currently, there are few treatment options available to those who suffer from alcohol use disorder, alcohol abuse, or alcohol dependence. Identifying candidate genes or environmental influences would therefore improve the means for possible treatments or identification of those people at risk for alcohol use disorder. Previous studies in humans have demonstrated an inverse association between initial sensitivity and risk for alcohol abuse. This connection allows investigators, and our laboratory, to investigate genetic and environmental factors …
Impact Of Seasonal And Host-Related Factors On The Intestinal Microbiome And Cestode Community Of Sorex Cinereus And Sorex Monticola, Katelyn D. Cranmer
Impact Of Seasonal And Host-Related Factors On The Intestinal Microbiome And Cestode Community Of Sorex Cinereus And Sorex Monticola, Katelyn D. Cranmer
Electronic Theses and Dissertations
The intestinal microbiome of mammals plays a significant role in host health and response to environmental stimuli and can include both beneficial native bacteria as well as parasitic worms. In this study, I examined the intestinal cestode and bacterial communities of two closely related species of shrew, Sorex monticola and Sorex cinereus, over a six month period in 2016. Specimens were collected approximately every three weeks from May to October from the Sangre de Cristo Mountains in Cowles, New Mexico. A total of 79 shrews were prepared with the gastrointestinal tracts removed and flash-frozen in liquid nitrogen. An additional …
Haplotype Diversity And Population Genetic Structure Of Antistrophus Gall Wasps Associated With Two Silphium Species And Implication For Host Mediated Speciation, Jiaxin Deng
Masters Theses
Gall making insects form a special feeding guild of phytophagous animals, and by manipulating host plant tissue differentiation, are able to avoid plant chemical defenses and thus have no need for counter defense mechanisms. Host plant selection is crucial to the evolution of these insects because successful gall formation is largely dependent on host plant ability to respond to stimuli. In Illinois and neighboring states, Antistrophus gall wasps associated with the rosin weed (S. integrifolium) and the cup plant (S. perfoliatum) are morphologically indistinguishable and thus have been treated as belonging to single species. However, the wasps from the host …
A Sustainable Future In The Implementation Of Clinical Pharmacogenomics, Nicholas Keeling
A Sustainable Future In The Implementation Of Clinical Pharmacogenomics, Nicholas Keeling
Electronic Theses and Dissertations
Purpose: The sustainability of clinical pharmacogenomics requires further study of clinical education on the topic, its effects on clinical workflow, and the responsibilities of different providers for its delivery. Tools from the discipline of implementation science were utilized herein to help achieve the purposes of the three studies. The broad purpose of this dissertation is to advance the work of clinical pharmacogenomic implementation through a more rigorous convergence with implementation science.
Methods: Three studies constitute the whole of this dissertation. The first is a scoping review that provides a broad characterization of the methods utilized in available peer-revieliterature focusing on …
Mechanisms Of Trinucleotide Repeat Instability During Dna Synthesis, Kara Y. Chan
Mechanisms Of Trinucleotide Repeat Instability During Dna Synthesis, Kara Y. Chan
Theses and Dissertations--Toxicology and Cancer Biology
Genomic instability, in the form of gene mutations, insertions/deletions, and gene amplifications, is one of the hallmarks in many types of cancers and other inheritable genetic disorders. Trinucleotide repeat (TNR) disorders, such as Huntington’s disease (HD) and Myotonic dystrophy (DM) can be inherited and repeats may be extended through subsequent generations. However, it is not clear how the CAG repeats expand through generations in HD. Two possible repeat expansion mechanisms include: 1) polymerase mediated repeat extension; 2) persistent TNR hairpin structure formation persisting in the genome resulting in expansion after subsequent cell division. Recent in vitro studies suggested that a …
Multigenerational Genomic And Epigenetic Effects Of Manufactured Silver Nanomaterials In Caenorhabditis Elegans, Anye Wamucho
Multigenerational Genomic And Epigenetic Effects Of Manufactured Silver Nanomaterials In Caenorhabditis Elegans, Anye Wamucho
Theses and Dissertations--Toxicology and Cancer Biology
There has been an increase in the incorporation of silver nanomaterials into consumer products due to their antimicrobial properties. Therefore there is potential for silver nanoparticles (Ag-NPs) to leach out into the environment during different life-cycle stages of these nanomaterial-containing products. Concern about the toxicity of Ag-NPs has led to investigations into their toxic effects on a variety of organisms mainly using acute and sub-chronic, single-generation exposures. The focus of this project was to understand the effects of long-term continuous multigenerational exposure to AgNO3 and Ag-NPs in both pristine and environmentally transformed forms, on the model organism, Caenorhabditis elegans …
Mutations Of Fus Cause Aggregation Of Rna Binding Proteins, Disruptions In Protein Synthesis, And Dysregulation Of Nonsense Mediated Decay, Marisa Elizabeth Kamelgarn
Mutations Of Fus Cause Aggregation Of Rna Binding Proteins, Disruptions In Protein Synthesis, And Dysregulation Of Nonsense Mediated Decay, Marisa Elizabeth Kamelgarn
Theses and Dissertations--Toxicology and Cancer Biology
Amyotrophic lateral sclerosis (ALS) is a fatal neurodegenerative disease characterized by motor neuron death and subsequent muscle atrophy. Approximately 15% of ALS cases are inheritable, and mutations in the Fused in Sarcoma (FUS) gene contribute to approximately 5% of these cases, as well as about 2% of sporadic cases. FUS performs a diverse set of cellular functions, including being a major regulator of RNA metabolism. FUS undergoes liquid- liquid phase transition in vitro, allowing for its participation in stress granules and RNA transport granules. Phase transition also contributes to the formation of cytoplasmic inclusions found in the …
Analysis Of A Fragmented Mitochondrial Genome In A Chewing Louse, Geomydoecus Aurei, Alexandra Cleone Place
Analysis Of A Fragmented Mitochondrial Genome In A Chewing Louse, Geomydoecus Aurei, Alexandra Cleone Place
Dissertations and Theses @ UNI
A typical animal mitochondrial genome consists of a single circular chromosome with 37 genes (Shao et al. 2015). Atypical mitochondrial genomic arrangements have been found in some lice species, including some species with minichromosomes with only a single protein-coding or ribosomal RNA gene (Cameron et al. 2011). Mitochondrial genome data from two species of chewing lice from pocket gophers have been reported to date. For both species, Geomydoecus aurei and Thomomydoecus minor (order Phthiraptera, suborder Ischnocera, family Trichodectidae), the cox1 gene occurs on a small (less than 2,000 base-pair [bp]) minichromosome (Pietan et al. 2016).
Eight additional mitochondrial chromosomes of …
Crystallographic Structure Determination Of Bacteriophage-Encoded Enzymes That Specifically Target Pathogenic Bacteria, Marta Sanz Gaitero
Crystallographic Structure Determination Of Bacteriophage-Encoded Enzymes That Specifically Target Pathogenic Bacteria, Marta Sanz Gaitero
Theses
Antibiotic resistance is becoming a serious public health concern. Infections that some decades ago could be treated with antibiotics now sometimes do not respond to traditional treatment, causing higher mortality and economic losses. An alternative to the use of antibiotics are bacteria's natural predators, bacteriophages (or phages), and specifically their lytic enzymes. These proteins are produced by phages to degrade bacterial peptidoglycan to inject their genetic material into the bacteria (virion-associated peptidoglycan hydrolases) or to release their progeny once the infection is finished (endolysins). They can be applied exogenously to lyse Gram-positive bacteria or be genetically engineered to lyse Gram-negative …
Expression Of Alternative Oxidase In The Copepod T. Californicus When Exposed To Environmental Stressors, Carly Tward
Expression Of Alternative Oxidase In The Copepod T. Californicus When Exposed To Environmental Stressors, Carly Tward
Theses and Dissertations (Comprehensive)
In addition to the typical electron transport system in animal mitochondria responsible for oxidative phosphorylation, some species possess an alternative oxidase (AOX) pathway, which causes electrons to bypass proton pumping complexes. Although AOX appears to be energetically wasteful, studies have revealed its wide taxonomic distribution, and indicate it plays a role in environmental stress tolerance. AOX discovery in animals is recent, and further research into its expression, regulation, and physiological role has been impeded by the lack of an experimental model organism. DNA database searches using bioinformatics revealed an AOX sequence present in the arthropod Tigriopus californicus. Multiple sequence …
Cure-All- Large Scale Implementation Of Authentic Dna Barcoding Research Into First-Year Biology Curriculum, Oliver Hyman, Elizabeth Doyle, Joseph Harsh, Joanna Mott, Andrea Pesce, Bejan Rasoul, Kyle Seifert, Ray A. Enke
Cure-All- Large Scale Implementation Of Authentic Dna Barcoding Research Into First-Year Biology Curriculum, Oliver Hyman, Elizabeth Doyle, Joseph Harsh, Joanna Mott, Andrea Pesce, Bejan Rasoul, Kyle Seifert, Ray A. Enke
Ray Enke Ph.D.
Saccharomyces Genome Database & Uniprot Bioinformatics Analysis, Ray A. Enke
Saccharomyces Genome Database & Uniprot Bioinformatics Analysis, Ray A. Enke
Ray Enke Ph.D.
Undergraduates Contain Multitudes: Course-Based Metagenomics Analysis Using Dna Subway Purple Line, Ray A. Enke
Undergraduates Contain Multitudes: Course-Based Metagenomics Analysis Using Dna Subway Purple Line, Ray A. Enke
Ray Enke Ph.D.
No abstract provided.