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Articles 1 - 30 of 87
Full-Text Articles in Life Sciences
Adherent-Invasive Escherichia Coli (Aiec) Promotes Mild Colitis In The C57bl/6 Il-10 Ko Mouse Model Of Crohn's Disease, Sarah Sm Zaw
Adherent-Invasive Escherichia Coli (Aiec) Promotes Mild Colitis In The C57bl/6 Il-10 Ko Mouse Model Of Crohn's Disease, Sarah Sm Zaw
Senior Theses
Crohn's disease (CD) is a chronic inflammatory bowel disease. Interleukin-10 knockout (IL-10 KO) mice are crucial in CD research. Adherent-invasive Escherichia coli (AIEC) is a subgroup of E. coli. In one study, IL-10 KO mice colonized with AIEC developed colitis in the distal colon compared to wild-type (WT) mice. I investigated how AIEC NC101 WT affects colitis severity in IL-10 KO mice of the C57BL/6 genetic background. Similar results in both genotypes would enhance mouse strain accessibility. Germ-free C57BL6 IL-10 KO mice were divided into groups: colonized with AIEC NC101 for 12, 15, or 18 weeks, or kept germ-free. Histopathological …
Characterization Of Rna Binding Proteins Regulating Axonal Localization Of Prenyl-Cdc42 Mrna, Ashley I. Loomis
Characterization Of Rna Binding Proteins Regulating Axonal Localization Of Prenyl-Cdc42 Mrna, Ashley I. Loomis
Senior Theses
Following traumatic injury, axons in the peripheral nervous system (PNS) can spontaneously regenerate, albeit rather slowly. This regeneration requires messenger RNA (mRNA)-localization into and translation within the axons. One such mRNA originates from the CDC42 gene, which produces two mRNA splice variants: Prenyl-CDC42 and Palm-CDC42 encoding mRNAs. CDC42 promotes axon growth and regeneration by regulating actin filament polymerization in growth cones of axons. This plays an important role to support nerve regeneration in humans. The prenyl-Cdc42 mRNA is found in both central nervous system (CNS) and PNS axons, where it can be locally translated into CDC42 protein, which is subsequently …
Deciphering The Functional Connections Between The Nuclear Paraspeckle And Rad51 Homologous Recombination Proteins Using A Yeast Protein Interaction System, Eric J. Nutz
Senior Theses
Homologous recombination (HR) is a repair pathway for DNA double-stranded breaks. Mutations in HR genes contribute to genomic instability and increase the prevalence of cancer. Exploiting HR deficiency in tumor cells has led to improved synthetic lethality outcomes. RAD51 paralogue protein complexes are known to be involved with HR. Proteomic analysis of RAD51 paralogues reveals a connection to the nuclear paraspeckle. A paraspeckle is a little-known, specialized organelle found in the interchromatin space of the nucleus in mammalian cells. Its three central protein components include SFPQ, NONO, and PSPC1. RAD51D is an HR protein shown previously to interact with SFPQ …
Investigating The Expression Of Growth-Regulating Factor 2 (Grf2) In Arabidopsis Thaliana, Sophia S. Henry
Investigating The Expression Of Growth-Regulating Factor 2 (Grf2) In Arabidopsis Thaliana, Sophia S. Henry
Senior Theses
Arabidopsis thaliana is a model organism that is used in laboratories across the world for the study of cellular and molecular processes in plants. GROWTH-REGULATING FACTOR 2 (GRF2) is a transcription factor that promotes leaf growth in Arabidopsis. It is a member of a family of transcription factors that is conserved across all land plants. Previous studies have characterized GRF2 expression in leaves, but GRF2 expression in floral organs has not been studied as extensively. GRF2 acts redundantly with other members of the GRF transcription factor family during floral development. grf1/2/3/5 quadruple mutants show malformed gynoecia, severe fusions between floral …
Analysis Of Genes Responsible For Neuronal Morphological Changes In Down Syndrome Hipsc-Derived Neurons, Juhi Patel
Analysis Of Genes Responsible For Neuronal Morphological Changes In Down Syndrome Hipsc-Derived Neurons, Juhi Patel
Senior Theses
Down syndrome (DS) is a complex neurodevelopmental disorder caused by the trisomy of chromosome 21. DS is the largest genetic cause of intellectual disability, which occurs in varying severity among affected individuals. It is associated with a variety of developmental and cognitive defects, including reduced brain size, impaired synaptic function, and altered neuronal morphology. A number of genes have been identified to play critical roles in the development and maintenance of neuronal morphology, and alterations in the expression of some of these genes are implicated in the morphological changes observed in DS. Knocking out or altering their expression leads to …
Accuracy Of Therapeutic Drug Monitoring In Vancomycin And The Pharmacist Role: A Retrospective Case-Series, Kateryna Parkhomenko
Accuracy Of Therapeutic Drug Monitoring In Vancomycin And The Pharmacist Role: A Retrospective Case-Series, Kateryna Parkhomenko
Senior Theses
Vancomycin is a mainstay of therapy for treating virulent and resistant infections, especially methicillin-resistant Staphylococcus aureus (MRSA). However, vancomycin requires therapeutic drug monitoring (TDM) for optimal dosing and treatment. This requires pharmacists to calculate a dosing regimen that correlates to appropriate goal vancomycin concentrations in the blood. Dosing vancomycin can be difficult, as it varies on a patient’s weight, renal function, age, etc. Doses may have to be adjusted in response to out-of-range concentrations, which requires further pharmacy calculations. Inaccurate dosing poses a risk to patient safety and places a resource and time burden on pharmacists. If vancomycin dosing methods …
Immunohistochemical Investigation Of Wwp1 Expression During Embryonic Heart Development And Its Implications For Cardiac Aging, Savannah L. Bowers
Immunohistochemical Investigation Of Wwp1 Expression During Embryonic Heart Development And Its Implications For Cardiac Aging, Savannah L. Bowers
Senior Theses
Cardiovascular disease is the leading cause of mortality globally, with the aging population being most vulnerable. Cardiomyocytes and cardiac fibroblasts mediate pathophysiological changes of cardiac aging including interstitial fibrosis, left ventricular hypertrophy, lethal arrhythmias, and eventual culmination in heart failure. Interestingly, subclinical congenital heart disease and hypertrophic cardiomyopathy, originating in embryonic development, induce accelerated cardiac aging. The diverse developmental origins of cardiac fibroblasts suggest that perturbations in gene expression within this heterogeneous cell population during embryonic heart development have significant consequences for cardiac aging. Previous studies implicate the E3 ubiquitin ligase WWP1, a post-translational regulatory protein, in accelerated cardiac aging. …
Using Podcasts To Bring National Estuarine Research Reserves Into The Classroom For Grades 6-12, Kaitlyn M. Dirr
Using Podcasts To Bring National Estuarine Research Reserves Into The Classroom For Grades 6-12, Kaitlyn M. Dirr
Senior Theses
In a typical classroom setting, there are significant challenges to exposing students to concepts related to earth sciences and the environment. These challenges are exacerbated when conveying lessons about geographic areas with limited access, such as oceans and coastlines (Louv, 2010). It is now more important than ever for environmental education to improve and adapt to our changing world. Educators may have the opportunity to bring these subjects to life by using media content such as podcasts to introduce students to new places and the scientists, managers and educators that work in those spaces. In the United States, there exists …
Role Of Nucleus Accumbens Dopamine Receptor Signaling In The Suppression Of Punished Reward Seeking, Grace M. Joyner, Anna Caroline Toburen
Role Of Nucleus Accumbens Dopamine Receptor Signaling In The Suppression Of Punished Reward Seeking, Grace M. Joyner, Anna Caroline Toburen
Senior Theses
Previous studies have shown that within the nucleus accumbens (NAc), a brain region associated with motivation and reinforcement learning, activity of neurons expressing the dopamine D2 receptor (D2R neurons) act as a “break” on risky behavior associated with negative outcomes. Moreover, when these neurons are stimulated, rats were found to become more risk averse. However, the impact of dopamine signaling through NAc D2R neurons in risk avoidance is still unclear. To further explore the role of NAc dopamine signaling in punished reward-seeking, we tested rats in a novel punished food-seeking paradigm in which subjects are trained to choose between a …
Local Translation And Focal Adhesions Are Dysregulated In Down Syndrome, Ashlyn Gotberg, Nikita Kirkise M.S., Kristy Welshhans Ph.D.
Local Translation And Focal Adhesions Are Dysregulated In Down Syndrome, Ashlyn Gotberg, Nikita Kirkise M.S., Kristy Welshhans Ph.D.
Senior Theses
During cellular migration, fibroblasts sense extracellular cues through membrane complexes at their leading edge and can respond to these cues via local translation. Local translation is the process in which mRNAs are transported to subcellular regions and translated in response to specific cues. There is evidence that local translation may be dysregulated in the neurodevelopmental disorder, Down syndrome, which is caused by the triplication of chromosome 21 and results in genome-wide dysregulation of protein expression. To determine if dysregulated local translation contributes to Down syndrome, we used three sets of primary fibroblasts from individuals with Down syndrome and apparently healthy …
Temperature Effects On Yield Of Ideal Wheat Cultivars, Jeffrey Jiang
Temperature Effects On Yield Of Ideal Wheat Cultivars, Jeffrey Jiang
Senior Theses
North American wheat growing areas show variation in many different factors, one of the most varied and important being temperature. Temperature is well established to correlate with yield. Given data from the Uniform Soft Red Winter Wheat Nursery and independently gathered data from government-owned weather stations, I explored possible correlations between temperature and wheat yield that can be extrapolated to areas that are not covered by the Uniform Soft Red Winter Wheat Nursery database. My analysis did not reveal strong correlations between temperature and growth, and in some cases, the sample size was too small. From this study, it was …
Mutating Tetur02g09850 Originated From Spider Mites To Enhance Crystallization, Hayley Cash
Mutating Tetur02g09850 Originated From Spider Mites To Enhance Crystallization, Hayley Cash
Senior Theses
This study aimed to explain and adequately utilize several common biochemical laboratory techniques to mutate a portion of the nucleic acid sequence within a specific protein. This protein, referred to as Tetur02g09850 is originated from Tetranychus Urticae, or the Two-Spotted Spider Mite. This mite causes excessive damage to crops and is known to be extremely resistant to most common pesticides. For this reason, understanding the protein structure could be used to explain this acaricide resistance and aid in the development of more effective pesticides. Some of the testing utilized was site-directed mutagenesis, IMAC and gel filtration for protein purification, gel …
Mirna-489 Induces Immunogenic Cell Death In Triple Negative Breast Cancer Cells, Ryan P. Titus
Mirna-489 Induces Immunogenic Cell Death In Triple Negative Breast Cancer Cells, Ryan P. Titus
Senior Theses
It has been well established that microRNAs (miRNAs) play an important role in the regulation of gene expression and consequently promoting or downregulating molecular pathways. When dysregulated, miRNAs have been found to serve as important biomarkers for cancer diagnosis and influence tumor initiation and progression. It has been previously established that miRNA-489 is a tumor suppressor microRNA, and it directly targets cell proliferative pathways like the HER2-SHP2-MAPK pathway. In this study, we focus on the role of miRNA-489, in the induction of immunogenic cell death (ICD) in triple-negative breast cancer cell lines. We first examined the effects of miRNA-489 on …
Functional Analysis Of Stn1 Winged-Helix (Wh) Domains, Anna Bazell
Functional Analysis Of Stn1 Winged-Helix (Wh) Domains, Anna Bazell
Senior Theses
CST (CTC1-STN1-TEN1) is a heterotrimeric RPA-like protein complex that preferentially binds to single-stranded DNA (ssDNA). CST is conserved from yeast to humans and has been found to play a role in telomere maintenance, DNA replication, and DNA repair. Mutations in CST, specifically in the subunits of CTC1 and STN1, have been implicated in the development of the genetic diseases Coats plus and dyskeratosis congenita. Despite the known functions of CST, the mechanistic relationship between its structure and function has yet to be characterized, particularly with respect to its protein-protein interactions and DNA binding. An X-ray crystallography structure of CST revealed …
Synthesis Of A Streptavidin-Conjugated Agarose Resin For Purification Of Biotin-Tagged Biomolecules, Sydney Thomas
Synthesis Of A Streptavidin-Conjugated Agarose Resin For Purification Of Biotin-Tagged Biomolecules, Sydney Thomas
Senior Theses
Streptavidin, a bacteria-derived protein, and the small molecule biotin display extremely high-affinity binding. Researchers have taken advantage of this uniquely strong interaction in a myriad of detection, labeling, and purification techniques, one of which is affinity chromatography. Streptavidin can be immobilized onto a solid support, and this streptavidin-conjugated material can be used to capture biotin-tagged molecules with exceedingly high strength and specificity. In this project, a protocol was developed for synthesizing an agarose-based streptavidin resin for use as an affinity chromatography medium. Additionally, two fluorescence-based assays were developed for quantifying the amount of streptavidin conjugated to each resin and for …
Historical And Future Role Of Wilmar Palm Oil In Deforestation Of Indonesian Borneo, Sam Coroniti Iii
Historical And Future Role Of Wilmar Palm Oil In Deforestation Of Indonesian Borneo, Sam Coroniti Iii
Senior Theses
Borneo is one of the most biologically diverse locations on Earth, with thousands of endemic and rare species forming unique and intricate relationships throughout the ecosystems. Orangutans, elephants, leopards, tigers, rhinos, and many more species call this island their home, although population levels for all of the mentioned species have been in seriously decline over recent decades. The loss of primary rainforest that provides the most critical habitat for these species has occurred at the highest rate that has ever been seen on Earth, leading to extreme land conversion and greenhouse gas producing operations. The primary driver of these actions …
Assessing Satisfaction With Bi-Weekly Produce Deliveries As A Means To Reduce Food Insecurity On College Campuses, Sophie Crosby
Assessing Satisfaction With Bi-Weekly Produce Deliveries As A Means To Reduce Food Insecurity On College Campuses, Sophie Crosby
Senior Theses
Background: As food insecurity disproportionately affects college students and students are often unable to receive government nutritional assistance, more lasting, sustainable interventions are needed to decrease food insecurity on college campuses. The purpose of this study was to measure the satisfaction of the FoodShare program, a low-cost, biweekly fresh produce delivery, at the University of South Carolina. The purpose of this study was to pilot FoodShare’s program with adaptations to the University of South Carolina and examine participants’ experience with the program. Methods: Forty-three students, faculty, and staff purchased boxes over a three-month period. FoodShare boxes were purchased and delivered …
Superfund And Society Benumbed: An In-Depth Look At Environmental Justice In South Carolina, Sydney A. Hampton
Superfund And Society Benumbed: An In-Depth Look At Environmental Justice In South Carolina, Sydney A. Hampton
Senior Theses
This thesis investigates the relationship between superfund sites in minority communities and their public health through the lens of social vulnerability. Various demographic parameters were used to assess the risk associated with minority communities and exposure to hazardous waste. After investigating the history of the Environmental Justice movement, three superfund sites of interest in South Carolina, and demographic and public health data; each community was analyzed to determine association between exposure to hazardous waste and minority status. Each examined community exhibited characteristics contributing to heightened social vulnerability, potentially causing increased susceptibility to negative health outcomes from exposure to hazardous waste.
The Classification Of Basket Neural Cells In The Mammalian Neocortex, Sreya Pudi
The Classification Of Basket Neural Cells In The Mammalian Neocortex, Sreya Pudi
Senior Theses
Basket neuronal cells of the mammalian neocortex have been classically categorized into two or more groups. Originally, it was thought that the large and small types are the naturally occurring groups that emerge from reasons that relate to neurobiological function and anatomical position. Later, a study based on anatomical and physiological features of these neurons introduced a third type, the net basket cell which is intermediate in size as compared to the large and small types. In this study, multivariate analysis was used to test the hypothesis that the large and small types are morphologically distinct groups. The results of …
Ahr Expression On Rorc-Expressing Immune Cells Is Essential For I3c-Mediated Protection Against Colitis, Michal C. Williams
Ahr Expression On Rorc-Expressing Immune Cells Is Essential For I3c-Mediated Protection Against Colitis, Michal C. Williams
Senior Theses
Colitis is an inflammatory bowel disorder (IBD) whose etiology is attributed to modification in the luminal microbiota and dysregulation in the immune response. Indole is a signaling molecule which is naturally produced by gut luminal microbiota. Indole-3- carbinol (I3C) is a compound commonly found in vegetables and a ligand for the aryl hydrocarbon receptor (AhR). Previous studies have detected decreased expression and activation on the AhR receptor in colitis patients, thought to possibly alter gut microbiota metabolism, subsequently promoting colitis. 1 AhR, expressed in a variety of immune and epithelial cells, contributes to gut homeostasis by affecting vital mediators such …
A Study Of The Social, Cultural, And Environmental Influences On Appalachian Agriculture, Morganne May
A Study Of The Social, Cultural, And Environmental Influences On Appalachian Agriculture, Morganne May
Senior Theses
Appalachia, despite its rich history and abundant biological and cultural diversity, is commonly associated with a generalized notion of ignorance, resistance to progress, and "backwardness." This study aims to shed light on the socioeconomic, cultural, and environmental influences which have shaped the present food systems of Appalachia through a review of relevant literature. This history provides the necessary context to strategize a region-specific, socioeconomically and environmentally sustainable food system moving forward.
Lions, Tigers, And Hemes - Oh My! A Dynamic Look At The Electronic Effects Of Porphyrin Substitution On Cytochrome P450 Olet, Alexis J. Holwerda
Lions, Tigers, And Hemes - Oh My! A Dynamic Look At The Electronic Effects Of Porphyrin Substitution On Cytochrome P450 Olet, Alexis J. Holwerda
Senior Theses
OleT, a member of the CYP152 family of cytochrome P450s (CYPs), decarboxylates fatty acids using hydrogen peroxide as an oxidant. The resultant products are a terminal alkene and carbon dioxide. This C–C cleavage reaction is highly atypical for CYPs, which prototypically oxygenate substrates, and provides a potential means to enzymatically produce drop-in fuels. OleT contains a heme-iron cofactor that facilitates decarboxylation through the activation of hydrogen peroxide. The catalytic cycle, as determined by transient kinetics, includes two ferryl intermediates known as Compound I (Ole-I) and Compound II (Ole-II). Ole-I performs substrate hydrogen abstraction and subsequent single electron transfer to Ole-II …
Cyclic Fluctuations Of Zooplankton Dynamics In A Tidal Salt-Marsh Basin, Jamaal Jacobs
Cyclic Fluctuations Of Zooplankton Dynamics In A Tidal Salt-Marsh Basin, Jamaal Jacobs
Senior Theses
Zooplankton are pelagic aquatic animals that are limited in their movements by the water currents around them and are major links in aquatic food webs between primary producers and higher trophic levels. Their populations are temporally and spatially variable, as they are sensitive to changes in salinity, temperature, and dissolved oxygen. This is especially true in highly dynamic environments, like estuaries, where environmental conditions are highly variable across seasonal and daily cycles. In order to examine the variability in zooplankton populations across a tidal cycle, we collected zooplankton samples from North Inlet Estuary at 30-minute intervals over a half tidal …
Killing The Planet But Saving The People: How The American Healthcare Industry Impacts The Environment, Malorie Webb
Killing The Planet But Saving The People: How The American Healthcare Industry Impacts The Environment, Malorie Webb
Senior Theses
The American population is rapidly growing and aging. In order to accommodate such a large population and its associated challenges, the healthcare industry has had to continually expand and adapt. The United States healthcare industry is now one of the largest, most expensive components of the economy. As such, it produces vast amounts of waste. Healthcare waste can damage the environment and contribute to climate change, which in turn can contribute to worsening health outcomes in the population. This thesis aims to explore both the immediate and prolonged impacts of the American healthcare industry on the environment, as well as …
Purification And Functional Characterization Of The Iron-Responsive Transcription Factor Aft1 From C. Glabrata, Jade Ikahihifo-Bender
Purification And Functional Characterization Of The Iron-Responsive Transcription Factor Aft1 From C. Glabrata, Jade Ikahihifo-Bender
Senior Theses
Due to its unique ability to serve as both an electron donor and acceptor, iron is utilized as a co-factor for many biological processes, including electron transfer, oxygen binding, and vitamin synthesis. Iron is also a key factor during fungal infections as the human host and invading pathogens battle over limited iron pools. The primary iron-responsive transcription factor Aft1 in the opportunistic pathogenic yeast Candida glabrata responds to iron deficiency by activating expression of iron acquisition genes. However, the mechanisms for sensing intracellular iron levels and regulating Aft1 activity in response to iron are unknown. The C. glabrata iron regulation …
Investigating The Redox Sensitivity Of Mitf Splice Variants, Rachel Berryman
Investigating The Redox Sensitivity Of Mitf Splice Variants, Rachel Berryman
Senior Theses
Within pigment-producing cells known as melanocytes, the transcription factor MITF is intimately involved in regulating genes associated with cell cycle maintenance and melanocyte differentiation. Research, however, has provided conflicting results on the relationship between the expression levels of MITF and melanocyte cell fate. To complicate matters, two splice variants of MITF exist, differing by only 18 base pairs. These variants have been observed at variable levels of expression in melanocyte and melanoma cells, raising the question as to their functional purpose. Building upon previous research by the Leachman/Cassidy lab that identified the redox sensitivity of MITF while additionally establishing a …
Influenza Vaccination Coverage In Pediatric Patients With Inflammatory Bowel Disease, Kelly Brown
Influenza Vaccination Coverage In Pediatric Patients With Inflammatory Bowel Disease, Kelly Brown
Senior Theses
Background: Children with chronic health conditions, including inflammatory bowel disease (IBD), are at especially high risk for influenza infection and complications. The Crohn’s & Colitis Foundation and American College of Gastroenterology recommend that IBD patients should receive annual influenza vaccination. The aims of this study were to evaluate influenza vaccination coverage over time and identify predictors of flu vaccination in pediatric IBD and non-IBD patients.
Methods: We utilized longitudinal data (2000 to 2016) from South Carolina Medicaid to conduct a matched cohort study. The primary exposure of interest was IBD diagnosis based upon ICD-9/10 diagnosis codes. Children with IBD were …
The Effects Of A New Mutation In Lis1 And Its Potential Role In Autism Spectrum Disorder, John A. Slovensky
The Effects Of A New Mutation In Lis1 And Its Potential Role In Autism Spectrum Disorder, John A. Slovensky
Senior Theses
LIS1 is a protein, particularly concentrated in the brain, that is important in regulating the movement and transport capabilities of dynein. Dynein is protein that can move along pathways in the cell, carrying various cellular components and also helping brain cells migrate. These two proteins are crucial during the development of the nervous system, and mutations in them can lead to lissencephaly, a disorder in which the brain does not form properly. This disease causes patients to develop cognitive-motor defects and seizures that can lead to early death. While all previously identified mutations in LIS1 are known to cause lissencephaly, …
Individual Differences In Ultrasonic Vocalizations And Freezing Behavior During Fear Learning And Extinction In Female Rats, Iris M. Sakamoto
Individual Differences In Ultrasonic Vocalizations And Freezing Behavior During Fear Learning And Extinction In Female Rats, Iris M. Sakamoto
Senior Theses
Although many people experience traumatic events, only 10%-20% go on to develop post- traumatic stress disorder (PTSD). Women are particularly susceptible, with a prevalence rate double that of men, even when controlling for type of trauma exposure. This disparity suggests the existence of distinct neurobiological processes, particularly related to sex, that predispose some individuals to be more resistant to extinguishing learned fear. Similar differences exist in rodent fear conditioning and extinction, though female rodents are considerably understudied. We hypothesized that female rodents would exhibit individual differences in fear extinction similar to those that we have observed previously in males. The …
Relation Of Flt-1 And Endothelial Function In Women Soon After Delivery: Effect Of Physical Activity And Sedentary Behavior, Chloe W. Caudell
Relation Of Flt-1 And Endothelial Function In Women Soon After Delivery: Effect Of Physical Activity And Sedentary Behavior, Chloe W. Caudell
Senior Theses
Adverse pregnancy outcomes (APOs) are believed to be caused by poor placental formation. APOs can be characterized by elevated levels of a circulating Fms-like tyrosine kinase biomarker called Flt-1, produced by the placenta when its blood vessels are shallow or inadequately formed. Flt-1 acts directly on the maternal endothelium to impair vascular function during pregnancy and contributes to maternal features of APOs. This study aimed to evaluate the relation of Flt-1 and endothelial function in women soon after delivery. This study also aimed to evaluate the relation of Flt-1 and physical activity and sedentary behavior in women during and soon …