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Tracking The Progression Of Defects At The Neuromuscular Junction In Huntington's Disease, Katherine A. Trittschuh Jan 2023

Tracking The Progression Of Defects At The Neuromuscular Junction In Huntington's Disease, Katherine A. Trittschuh

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Huntington’s disease (HD) is a genetic disorder associated with progressive cognitive and motor decline. Recent studies in HD models suggest primary peripheral pathologies arise independent of changes in the central nervous system. Our lab found defects in skeletal muscle occurring early in the progression of disease in transgenic R6/2 HD mice, resulting in membrane hyperexcitability. Additionally, there is evidence of decreased quantal content in late-stage R6/2 mice. Here, we investigate pre-synaptic and post-synaptic function at single neuromuscular junctions (NMJ) to make direct comparisons of disease progression in the muscle membrane and motor nerve terminal. We hypothesize that muscle membrane defects …


Tracking The Progression Of Defects At The Neuromuscular Junction In Huntington's Disease, Katherine A. Trittschuh Jan 2023

Tracking The Progression Of Defects At The Neuromuscular Junction In Huntington's Disease, Katherine A. Trittschuh

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Huntington’s disease (HD) is a genetic disorder associated with progressive cognitive and motor decline. Recent studies in HD models suggest primary peripheral pathologies arise independent of changes in the central nervous system. Our lab found defects in skeletal muscle occurring early in the progression of disease in transgenic R6/2 HD mice, resulting in membrane hyperexcitability. Additionally, there is evidence of decreased quantal content in late-stage R6/2 mice. Here, we investigate pre-synaptic and post-synaptic function at single neuromuscular junctions (NMJ) to make direct comparisons of disease progression in the muscle membrane and motor nerve terminal. We hypothesize that muscle membrane defects …


The Impact Of Study Strategies On Academic Performance For Medical Students At Wright State University, Markia Black Jan 2023

The Impact Of Study Strategies On Academic Performance For Medical Students At Wright State University, Markia Black

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Studying plays an important role in the academic success of medical students. It is likely that ineffective study skills result in poor performances on required standardized exams. There is a concern for the lack of empirical data related to what study strategies are the most productive for medical students to practice. My goal is to 1) identify what study strategies students use in their pre-clinical years of medical school, 2) determine if these strategies impact students’ performance on Comprehensive Basic Science Exams and Step 1 exam, and 3) identify study methods that best support student achievement in the pre-clinical phase …


Microplastics In Wetlands Of West Central Ohio : Concentration And Distribution, Mitchell Link Jan 2023

Microplastics In Wetlands Of West Central Ohio : Concentration And Distribution, Mitchell Link

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Wetlands provide many valuable ecosystem services; however, an emerging global contaminant—microplastic (< 5 mm)—may be degrading this important resource. Few studies have extensively surveyed microplastic distribution in wetlands over a broad spatial area. Therefore, the goal of this study is to identify where microplastics are accumulating in wetlands, and whether there is any correlation between microplastic concentration and wetland quality. Soil samples were collected from 30 wetlands in west–central Ohio. Samples were physically separated, density separated, and digested. Average microplastic concentrations were 637 ± 494 items per kg soil per wetland. Higher quality wetlands are accumulating larger concentrations of microplastics. This relationship seems to be driven by greater accumulation of microplastics in forested wetlands than in wetlands surrounded by agriculture. There is no clear distribution pattern of microplastics within wetlands. These results provide insight into the role that wetlands have in association with microplastic accumulation.


To What Extent Do Non-Native Shrubs Support Higher Trophic Levels?, Ari Zakroff Jan 2023

To What Extent Do Non-Native Shrubs Support Higher Trophic Levels?, Ari Zakroff

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Invasive species threaten ecosystems and economies. Globally, biological invasions are estimated to have cost over $2.1 trillion since 1970. In Eastern North American woodlands, invasive plants are rapidly displacing natives. This is concerning, because invasive plants may not support the diverse and abundant arthropod communities essential to ecosystem function. Despite the conceptual understanding of invasive shrubs’ potential to transform forest communities, scant research has focused on the effect of invasive plants on higher trophic levels here in Ohio. To address this gap, I examined the diversity and abundance of arthropod communities, caterpillar performance, and caterpillar predation on two invasive shrubs, …


Environmental Toxicants And Human B Cells: Insights From Crispr Editing And Genomic Sequencing, Clayton Allex-Buckner Jan 2023

Environmental Toxicants And Human B Cells: Insights From Crispr Editing And Genomic Sequencing, Clayton Allex-Buckner

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The human immunoglobulin heavy chain gene locus (IGH) has two 3 prime regulatory regions (3’IGHRR), each containing three enhancers (hs3, hs1.2, hs4). In animal models, the 3’IghRR regulates IgH expression and class switch recombination (CSR) to different Ig isotypes. The 3’IGHRR hs1.2 enhancer in humans is polymorphic in that an invariant sequence (IS) can be repeated one to four times in tandem. The hs1.2 polymorphism is of interest due to its association with several human autoimmune disorders and its potential sensitivity to exogenous substances such as 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD or dioxin). In mouse models, TCDD inhibits the hs1.2 enhancer and 3’IghRR …


Exploring The Host Range, Impacts, And Distribution Of Black Rot Disease On Alliaria Petiolata, Gabriela Ivette Harney-Davila Jan 2022

Exploring The Host Range, Impacts, And Distribution Of Black Rot Disease On Alliaria Petiolata, Gabriela Ivette Harney-Davila

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Garlic mustard is an invasive Eurasian biennial spreading in deciduous forests of North America. Garlic mustard plants in Ohio can be infected with a strain of Xanthomonas campestris, the causal agent of black rot disease in brassicas. I examined variation in susceptibility to X. campestris among garlic mustard populations, several native wild species, and agricultural crop varieties. Twenty-four garlic mustard populations were universally susceptible to X. campestris, though disease severity varied. Cardamine concatenata and Cardamine diphylla were susceptible but can phenologically escape infection in the field. Of the 14 agricultural crops tested, three cultivars (Raphanus sativus, Brassica rapa var. Rapa …


Genomic Instability At A Polypurine/Polypyrimidine Repeat Sequence, Nathen S. Zavada Jan 2022

Genomic Instability At A Polypurine/Polypyrimidine Repeat Sequence, Nathen S. Zavada

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Microsatellite repeat sequences have been shown to induce replication stalling, fork collapse, double-strand breaks (DSBs), and possibly stimulate break-induced replication. In this study we use a dual-fluorescent HeLa model that is designed to monitor recombination at an ectopic site through use of flow cytometry and inverse PCR with a microsatellite in the lagging strand for DNA synthesis. To test the stability of the 78 bp polypurine/pyrimidine repeat from the PDK1 locus, we subjected cells to replication stress drugs designed to induce DSBs and measure break-induced replication (BIR). The study revealed that polypurine repeat cells undergo endogenous stress contributing to instability …


Chemosensitivity Of Locus Coeruleus Neurons Decreases With Postnatal Development, Yasmeen Samar Jan 2022

Chemosensitivity Of Locus Coeruleus Neurons Decreases With Postnatal Development, Yasmeen Samar

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The locus coeruleus (LC) is a chemosensory area partially responsible for ventilation. Control over ventilation relies on inter-network communication via chemical and electrical synapses and chemosensitivity to CO2/pH. As the LC develops, it’s neural control over ventilation changes. This study investigates the chemosensitivity of the locus coeruleus over the course of development in postnatal rats. We hypothesize that 1) the CO2 sensitivity of LC neurons is highest at birth and declines with development 2) LC neurons are intrinsically chemosensitive and this chemosensitivity does not decrease with development and 3) the presence of gap junctions is highest at the beginning of …


Modeling Als-Associated Matrin-3 Toxicity In Yeast, Widad El-Zein Jan 2022

Modeling Als-Associated Matrin-3 Toxicity In Yeast, Widad El-Zein

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ALS is a neurodegenerative disease characterized by degeneration of upper and lower motor neurons in the brain and spinal cord leading to progressive paralysis and ultimately death. Perturbations in RNA metabolism and RNA binding proteins have emerged as underlying defects in ALS pathogenesis. Matrin-3 is a multifunctional RNA binding protein that has been linked to familial and sporadic ALS. Matrin-3 is normally found in the nucleus, but mutations in the gene cause mislocalization of the protein from the nucleus into the cytoplasm of neuronal cells where it forms protein aggregates. In this study, we show that over-expressing human MATR3 in …


The Impact Of Sentiment And Misinformation Cycling Through The Social Media Platform, Twitter, During The Initial Phase Of The Covid-19 Vaccine Rollout, Emily Grace Burwell Jan 2022

The Impact Of Sentiment And Misinformation Cycling Through The Social Media Platform, Twitter, During The Initial Phase Of The Covid-19 Vaccine Rollout, Emily Grace Burwell

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This study assesses the underlying topics, sentiment, and types of information regarding COVID-19 vaccines on Twitter during the initiation of the vaccine rollout. Tweets about the COVID-19 vaccine were collected and the relevant tweets were then filtered out using a relevancy classifier. Latent Dirichlet Allocation (LDA) was used to uncover topics of discussion within the relevant tweets. The NRC lexicon was used to assess positive and negative sentiment within tweets. The type of information (information, misinformation, opinion, or question) in tweets was evaluated. The relevancy classifier resulted in a dataset of 210,657 relevant tweets. Eight topics provided the best representation …


Impaired Β-Cell Neogenesis In A Mouse Model Of Metabolic Syndrome, Modhi Abdullah Alshammari Jan 2022

Impaired Β-Cell Neogenesis In A Mouse Model Of Metabolic Syndrome, Modhi Abdullah Alshammari

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Pancreatic islet β-cell plays an essential role in insulin release and hence glucose homeostasis. The maintenance of glucose homeostasis depends on β-cell ability to cope with enough insulin to fulfill metabolic and physiological demands. Adequate insulin release is the result of highly complex and dynamic interplays between acute changes in β- cell electrical activity, exocytosis and chronic adaptations in cellular function, volume, mass and proliferation. All of this appears modulated, to some extent, by the functional presence of Slc12a2 symporters, also known as Na+K+2Cl– cotransporter-1 (Nkcc1), which accumulates intracellular Cl– above its electrochemical equilibrium. Recent studies from our laboratory showed …


Microsatellites And Their Association With Break Induced Replication, French J. Damewood Iv Jan 2021

Microsatellites And Their Association With Break Induced Replication, French J. Damewood Iv

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To study microsatellites instability and their repair pathways a dual fluorescent (DF2) and selectable (ganciclovir sensitive/ thymidine kinase (TK) expressing) cell system was assayed using replication fork stalling agents hydroxyurea and telomestatin. These cell lines carried ectopically integrated microsatellites derived from the Dystrophia Myotonica Protein Kinase (DMPK) gene ((CTG)102 microsatellite), or an 88 bp polypurine/ polypyrimidine (Pu/Py) repeat from the PKD-1 locus, inserted into a FLP recombinase target site. These microsatellites form non-B DNA structures in -vivo and in-vitro causing replication fork stalling and double strand breaks. DF2 myc (CTG)102 -TK cells treated with hydroxyurea were assayed for mutagenesis of …


Analyses Of Coyote (Canis Latrans) Consumption Of Anthropogenic Material And Dietary Composition In Urban And Non-Urban Habitats, Audrey A. Hayes Jan 2021

Analyses Of Coyote (Canis Latrans) Consumption Of Anthropogenic Material And Dietary Composition In Urban And Non-Urban Habitats, Audrey A. Hayes

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Coyotes are a generalist species that have adapted to nearly every terrestrial habitat in the United States. The species’ success is heavily attributed to their omnivorous diets and tolerance for environments that are regularly disturbed. Because the larger predator species that typically act as apex predators are sensitive to highly fragmented landscapes, the coyote is the functioning apex predator in many ecosystems where large predators, such as wolves, have been extirpated. The coyotes’ ecological role in urban ecosystems has received much attention in the last few decades as the species’ presence in cities and suburbs has increased, along with human-coyote …


Microsatellites And Their Association With Break Induced Replication, French J. Damewood Iv Jan 2021

Microsatellites And Their Association With Break Induced Replication, French J. Damewood Iv

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To study microsatellites instability and their repair pathways a dual fluorescent (DF2) and selectable (ganciclovir sensitive/ thymidine kinase (TK) expressing) cell system was assayed using replication fork stalling agents hydroxyurea and telomestatin. These cell lines carried ectopically integrated microsatellites derived from the Dystrophia Myotonica Protein Kinase (DMPK) gene ((CTG)102 microsatellite), or an 88 bp polypurine/ polypyrimidine (Pu/Py) repeat from the PKD-1 locus, inserted into a FLP recombinase target site. These microsatellites form non-B DNA structures in -vivo and in-vitro causing replication fork stalling and double strand breaks. DF2 myc (CTG)102 -TK cells treated with hydroxyurea were assayed for mutagenesis of …


Interleukin-2 Receptor Alpha Nuclear Localization Impacts Vascular Smooth Muscle Cell Function And Phenotype, Kristie Nhi Dinh Jan 2021

Interleukin-2 Receptor Alpha Nuclear Localization Impacts Vascular Smooth Muscle Cell Function And Phenotype, Kristie Nhi Dinh

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Atherosclerosis is responsible for 50% of all deaths in western society and is the main cause of cardiovascular diseases (Pahwa et al. 2020). Vascular smooth muscle cells (VSMC) play a vital role in the development of atherosclerotic plaques; this is due to their ability to proliferate and migrate in response to inflammation and damage to arteries’ inner linings. To further understand what causes these cells to proliferate and migrate, our lab has previously found that VSMC express all three subunits of the IL-2 receptor (IL-2R). Out of these three subunits, IL-2Rα appeared to change the most depending on the phenotype …


Characterizing The Effects Of 14-3-3 Isoforms On Alpha-Synuclein Toxicity In A Yeast Model, Angela Marie Braunschweiger Jan 2021

Characterizing The Effects Of 14-3-3 Isoforms On Alpha-Synuclein Toxicity In A Yeast Model, Angela Marie Braunschweiger

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The presynaptic protein alpha-synuclein encoded by SNCA is the primary component of Lewy bodies and Lewy neurites which are the histopathological hallmarks of Parkinson’s disease. While the etiology of Parkinson’s remains unclear, SNCA mutations and copy number variations are one of several genes linked to Parkinson’s. The family of highly conserved chaperone proteins 14-3-3 have been shown to co-aggregate and share regions of 40% homology with alpha-synuclein. Mitochondrial dysfunction also plays a role in Parkinson’s disease with abnormalities in mitochondrial respiration due to interference of complex I in the electron transport chain being found in Parkinson’s patients. Alpha-synuclein increases fragmentation …


Influence Of Light Availability On Tree Growth, Defense, And Emerald Ash Borer (Agrlius Planipennis) Success In White Fringetree (Chionanthus Virginicus) And Black Ash (Fraxinus Nigra), Michael S. Friedman Jan 2020

Influence Of Light Availability On Tree Growth, Defense, And Emerald Ash Borer (Agrlius Planipennis) Success In White Fringetree (Chionanthus Virginicus) And Black Ash (Fraxinus Nigra), Michael S. Friedman

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White fringetree is a host for the invasive emerald ash borer (EAB) despite being lower quality than black ash. Observations suggest that host trees grown in full sun are more resistant to EAB than those grown in shade, however chemical defense mechanisms and the impact of environmental stress have not been assessed. We quantified constitutive and induced defenses and other characteristics white fringetree and black ash phloem tissue grown under differential light conditions, and these traits were related to EAB larval performance. White fringetree had significantly lower constitutive and induced activities of defense associated enzymes and lignin but higher phenolic, …


Fate Of White Fringetree Through The Invasion Wave Of Emerald Ash Borer And Its Variation In Resistance To Attack, Emily A. Ellison Jan 2020

Fate Of White Fringetree Through The Invasion Wave Of Emerald Ash Borer And Its Variation In Resistance To Attack, Emily A. Ellison

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Ornamental white fringetrees in IL, IN, OH, and PA were reassessed in 2018 as a follow-up study to determine the fate of the white fringetree through the invasion wave of emerald ash borer. Attack rates decline by half from 2015-2018 and only 13% of trees were infested. Health of not reinfested trees in 2018 improved suggesting resilience against EAB attack whereas currently infested trees in 2018 displayed signs of declining health. Trees differed in their resistance to EAB attack and 41 additional ornamental and wild white fringetrees were studied in OH to determine if the anti-herbivory defense chemical, oleuropein, influenced …


A Planarian Kinesin Associated Protein 3 Homolog Is Required For Spermatogenesis And Ciliogenesis, Donovan Christman Jan 2020

A Planarian Kinesin Associated Protein 3 Homolog Is Required For Spermatogenesis And Ciliogenesis, Donovan Christman

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Microtubule-based structures are an essential part of eukaryotic cells as they are involved in a number of processes such as phagocytosis, chromosome separation, intracellular transport, and cell motility. Transport along microtubules is accomplished by kinesin superfamily proteins (KIFs), which are motor proteins that bind cargo and use ATPase activity to move along microtubules in an anterograde fashion. One of the most common kinesin complexes is the heterotrimeric Kinesin 2 complex which is composed of KIF3 subunit dimers and the Kinesin Associated Protein 3 (KAP3). This complex is known as the KIF3 complex and functions along microtubules in cilia and flagella. …


Composition Of Dung Beetle Communities In A Tropical Montane Forest Alters The Rate Of Dung Removal More Than Species Diversity Alone, Elizabeth A. Engle Jan 2020

Composition Of Dung Beetle Communities In A Tropical Montane Forest Alters The Rate Of Dung Removal More Than Species Diversity Alone, Elizabeth A. Engle

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Dung beetles provide key ecological functions by degrading and recycling dung. I used experimentally-assembled communities to examine the role of species richness, community biomass, species diversity, species identity, and community composition in dung removal, using Ateuchus chrysopyge, Copris nubilosis, Onothophagus cyanellus, and Dichotomius satanas. I hypothesized: (1) that as species richness, biomass, and diversity increases within a community, dung removal increases; and (2) species are not functionally equivalent, so community composition should influence dung removal rates. As species richness, biomass, and diversity of experimentally-assembled communities increased, the proportion of dung removed also increased. Also, the four species in this study …


Assessment Of In Vivo Muscle Force In The R6/2 Mouse Model Of Huntington's Disease Using Newly Designed Force Rig, Steven Russell Alan Burke Jan 2020

Assessment Of In Vivo Muscle Force In The R6/2 Mouse Model Of Huntington's Disease Using Newly Designed Force Rig, Steven Russell Alan Burke

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In this thesis, we develop a system to study in vivo muscle function in a mouse model of Huntington’s disease that allows for the recording of muscle force by stimulating the motor nerves or the muscles directly after a nerve block. This allows us to distinguish between defects in the nerve, such as problems with vesicle release, and primary muscle defects, such as altered intracellular calcium homeostasis. We hypothesize that there are primary defects in R6/2 skeletal muscle that are separate from neurodegeneration or defects in the CNS. In this case, we should see defects in muscle force generation during …


Invasive Species Shift Fungal Driven Decomposition In Midwestern Forests, Adam M. Reed Jan 2020

Invasive Species Shift Fungal Driven Decomposition In Midwestern Forests, Adam M. Reed

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Midwestern forests are currently impacted by two prominent invaders, Agrilus planipennis and Lonicera maackii. The Ag. planipennis induced loss of Fraxinus spp. trees can facilitate Lo. maackii invasion, which is likely altering microbial driven forest nutrient cycling. To assess these changes in microbial processes, I conducted litter bag and culture-based decomposition experiments using leaf litter from Acer spp., Quercus spp., F. nigra, F. pennsylvanica, Lindera benzoin, and Lo. maackii. For the culture-based decomposition experiment, I inoculated six species of fungi separately onto both single species and multispecies (half Lo. maackii and half native spp.) leaf litter and measured decomposition rate, …


Effects Of Coral Reef Habitat Complexity On The Community Composition And Trophic Structure Of Marine Fish Assemblages In Indonesia’S Wakatobi Marine National Park, Kuyer Josiah Fazekas Jr. Jan 2019

Effects Of Coral Reef Habitat Complexity On The Community Composition And Trophic Structure Of Marine Fish Assemblages In Indonesia’S Wakatobi Marine National Park, Kuyer Josiah Fazekas Jr.

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The coral reefs within Indonesia’s Wakatobi Marine National Park support a high diversity of reef-building hard corals and associated marine fish. Climate change threatens to dramatically affect coral reef ecosystems by altering the interactions between reef fish and the specific microhabitats they depend on for survival. To examine the spatially varied effects of habitat complexity on the community composition and trophic structure of marine fish assemblages, I analyzed fish community and habitat complexity data across reef zones. Habitat complexity metrics were: structural complexity, the percentage of hard coral (HC) cover, HC genera richness, HC genera diversity (Shannon index), and HC …


Bat Species Diversity And Habitat Use Assessment With Focus On Endangered Indiana Bats In The Wright State University Woods, Megan R. Rude Jan 2019

Bat Species Diversity And Habitat Use Assessment With Focus On Endangered Indiana Bats In The Wright State University Woods, Megan R. Rude

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The goals of my thesis are to: 1) identify species of bats in Wright State University’s (WSU) campus woods via acoustic surveys to compare to detections from previous years (Chapter 1) (2) analyze occupancy and detection probabilities of Indiana bats in different areas throughout the woods (Chapter 1), and 3) create an acoustical approach to analyze habitat use through bat social calls (Chapter 2). In Chapter 1, I conducted stationary acoustic surveys in the Wright State University woods in hydric (riparian), edge, and old growth habitats to record bat vocalizations. The WSU woods have a diverse bat community as ten …


Erk3 Negatively Regulates The Il-6/Stat3 Signaling Via Socs3, Astha Shakya Jan 2019

Erk3 Negatively Regulates The Il-6/Stat3 Signaling Via Socs3, Astha Shakya

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Mitogen activated protein kinases (MAPKs) are Ser/Thr kinases that relay the extracellular signal into intracellular responses and regulate several biological responses. They are classified into conventional MAPKs and atypical MAPKs. Extracellular signal regulated kinase 3 (ERK3) is an atypical MAPK that has a single phospho-acceptor site (Ser 189) in its activation motif instead of the canonical Thr-Xaa-Tyr (TXY) motif of conventional MAPK like ERK1/2. ERK3 comprises of a unique C terminal tail and a central C34 domain that further distinguishes it from ERK1/2. Moreover, compared to ERK1/2, much less is known about the upstream activators and the downstream targets of …


Identification Of A Hybrid Lethal Gene On The X Chromosome Of Caenorhabditis Briggsae, John Kelly Dougherty Jan 2019

Identification Of A Hybrid Lethal Gene On The X Chromosome Of Caenorhabditis Briggsae, John Kelly Dougherty

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Two closely related Caenorhabditis species, C. briggsae and C. nigoni are cross fertile and produce viable adult progeny. From C. nigoni mothers, F1 adult females are viable and fertile, F1 males are viable but sterile. In crosses that utilize C. nigoni males and C. briggsae hermaphrodites produce viable adult F1 females but F1 males arrest during embryogenesis. A mutation in the Cbr-him-8 gene is a recessive maternal-effect suppressor of male-specific lethality. Hybrid crosses with cbr-him-8 mutant mothers produce viable adult male progeny. The HIM-8 protein in C. elegans is required for the pairing of X-chromosomes during meiosis. This function is …


Lipin1 Regulates Skeletal Muscle Differentiation Through The Pkc/Hdac5/Mef2c:Myod -Mediated Pathway, Abdulrahman M. Jama Jan 2018

Lipin1 Regulates Skeletal Muscle Differentiation Through The Pkc/Hdac5/Mef2c:Myod -Mediated Pathway, Abdulrahman M. Jama

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Our previous characterization of global lipin1-deficient (fld) mice demonstrated that lipin1 played a novel role in skeletal muscle (SM) regeneration. The clinical relevance of lipin1 has been observed in patients with lipin1 null mutations where they exhibited severe rhabdomyolysis with aggregated and dysfunctional mitochondria. Lipin1 is a key gene that plays an important role in lipid biosynthesis and metabolism. It has dual functions as it contains a phosphatase activity that converts phosphatidic acid (PA) to diacylglycerol (DAG), the penultimate step in triglycerides (TAG) biosynthesis as well as transcriptional co-activator function. In the cytosol and ER, lipin1 carries out its lipid …


The Effect Of Increased Quizzing On Retention Of Material By Histology Laboratory Students, R. J. Nogrady Jan 2018

The Effect Of Increased Quizzing On Retention Of Material By Histology Laboratory Students, R. J. Nogrady

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In traditional approaches to teaching, examinations and quizzes have been considered secondary activities, designed to assess and motivate learning, but not generally as teaching tools in themselves (Roediger and Butler, 2011). However, abundant psychological research in laboratory settings indicates that the act of taking a quiz or examination on the material can directly enhance retention of that material in ways which are distinct from and often more effective than restudying of the material. This phenomenon is now referred to as the testing effect. The testing effect hypothesis asserts that (1) repeated retrieval attempts have a longer lasting effect on retention …


Lonicera Maackii Alters Decay Dynamics Of Coarse Woody Debris, Michaela J. Woods Jan 2018

Lonicera Maackii Alters Decay Dynamics Of Coarse Woody Debris, Michaela J. Woods

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Since industrialization, anthropogenic carbon emissions have led to excess atmospheric carbon dioxide that may alter the stability of ecosystem processes. Microorganisms are essential in mitigating excess carbon and play a notable role in the breakdown of organic material. This process, decomposition, is essential in forested ecosystems where microorganisms can recycle nutrients and store carbon in soil organic matter or release it through respiration. Fungi participate in decomposition through the release of enzymes responsible for carrying out the chemical reactions that break down plant material. Species introductions have the potential to alter decomposition dynamics. In the Midwestern US, the invasive shrub …