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Articles 1 - 25 of 25
Full-Text Articles in Cell Biology
Examination Of Oncogenic Effects Of Environmental Pollutants, Andrew Ackerman, Matthew Behling, Brock Earley, Janay Vacharasin
Examination Of Oncogenic Effects Of Environmental Pollutants, Andrew Ackerman, Matthew Behling, Brock Earley, Janay Vacharasin
Journal of the South Carolina Academy of Science
Chemical byproducts produced by surrounding industrial complexes have polluted the local estuaries of Georgetown, South Carolina for several decades1. Previous studies completed by the EPA and SCDNR showed that the estuaries contained carcinogenic pollutants released from the local manufacturing plants1. One of the mentioned pollutants was dioxins which are produced during the paper bleaching process2. Dioxins are highly toxic compounds that have various carcinogenic effects on the organisms that inhabit the area. These previous studies were conducted over thirty years ago. Therefore, a current study to determine if chemical byproducts are contaminating local estuaries …
A Comparison Of Diploid And Triploid Eastern Oysters For Aquaculture Production Under Extreme Temperatures And Salinities, Joshua H. Kim
A Comparison Of Diploid And Triploid Eastern Oysters For Aquaculture Production Under Extreme Temperatures And Salinities, Joshua H. Kim
LSU Master's Theses
Off-bottom aquaculture of Eastern oysters (Crassostrea virginica) is a nascent industry that is increasingly supported by the use of triploid oysters, which grow faster than diploids. Despite their growth advantage, elevated triploid mortality compared to diploids under high temperature, low salinity, or a combination of these conditions challenge consistent triploid production. Identifying the environmental thresholds at which differential triploid mortality occurs and predicting its economic impact are important to informing decision-making in oyster aquaculture. The goal of this thesis was to compare the biological and economic performance of diploid and triploid oysters under high temperature and low salinity conditions. …
Investigating The Cellular Mechanisms Of Intracellular Ph Regulation During Exposure To High Co2., Dillon Flowers
Investigating The Cellular Mechanisms Of Intracellular Ph Regulation During Exposure To High Co2., Dillon Flowers
Biology Theses
There are at least two different strategies of pH regulation among fish. The first is coupled pH regulation (CPR), where regulation of blood pH facilitates tissue pH regulation; and the second is preferential intracellular pH (pHi) regulation (PPR), where tissue pH remains tightly regulated despite a sustained reduction in blood pH. The cellular and molecular mechanisms underlying the differences in pHi regulation are currently unknown. I investigated the mechanisms of pH regulation in fishes using Rainbow Trout (Oncorhynchus mykiss) and Channel Catfish (Ictalurus punctatus) which use CPR and PPR, respectively. Fish were exposed to elevated CO …
Genetics Of Mdh In Humans, Adam Haberman, Celeste N. Peterson
Genetics Of Mdh In Humans, Adam Haberman, Celeste N. Peterson
Biology: Faculty Scholarship
Malate dehydrogenase (MDH) performs key roles in metabolism, but little is known about its function specifically in human health and disease. In this minireview, we describe the incomplete state of our knowledge of human MDH genetics. Humans have three MDH genes with a total of four validated isoforms. MDH1 and MDH2 are widely expressed, while MDH1B is only expressed in a small subset of tissues. Many mutations in MDH1 and MDH2 have been identified in patients, but only a few have been studied to determine what symptoms they cause. MDH1 has been associated with cancer and a neurodevelopmental disorder. MDH2 …
Neuroinflammation In Alzheimer’S Disease Mouse Brain Following Repetitive Mild Traumatic Brain Injury, Lujain Almuhanna
Neuroinflammation In Alzheimer’S Disease Mouse Brain Following Repetitive Mild Traumatic Brain Injury, Lujain Almuhanna
Electronic Theses and Dissertations
Traumatic brain injuries (TBIs) are a common form of head injury, with mild TBIs (mTBIs) making up 75-90% of the TBI severity scale. It’s been suggested that repetitive mild TBIs (rmTBIs) may enhance effects of Alzheimer’s Disease (AD). With dementia linking TBI and AD together, we investigated the memory hub of the brain - the hippocampus. Astrocytes and microglia are two glial cells that respond to neuroinflammation and therefore imaged in hippocampal regions of the 3xTg-AD mouse brain. We hypothesized that AD brain pathology (i.e., neuroinflammation) would be accelerated in 3xTg-AD mice following rmTBIs early in life. Analyses revealed that …
Towards A New Role Of Mitochondrial Hydrogen Peroxide In Synaptic Function, Cliyahnelle Z. Alexander
Towards A New Role Of Mitochondrial Hydrogen Peroxide In Synaptic Function, Cliyahnelle Z. Alexander
Student Theses and Dissertations
Aerobic metabolism is known to generate damaging ROS, particularly hydrogen peroxide. Reactive oxygen species (ROS) are highly reactive molecules containing oxygen that have the potential to cause damage to cells and tissues in the body. ROS are highly reactive atoms or molecules that rapidly interact with other molecules within a cell. Intracellular accumulation can result in oxidative damage, dysfunction, and cell death. Due to the limitations of H2O2 (hydrogen peroxide) detectors, other impacts of ROS exposure may have been missed. HyPer7, a genetically encoded sensor, measures hydrogen peroxide emissions precisely and sensitively, even at sublethal levels, during …
Omani Camels From A Cultural And Genomics Perspective, Al Muatasim Al Zadjali
Omani Camels From A Cultural And Genomics Perspective, Al Muatasim Al Zadjali
Electronic Theses and Dissertations
The Dromedarian camel, Camelus dromedarius, is native to the Arabian Peninsula, including the Sultanate of Oman. These camels are used for food, milk, as well as show and racing competitions. Despite their economic and cultural importance research on camels in Oman is limited. The goal of this study was to examine their genomic variation, relationship with camels in other parts of the Arabian Peninsula, and to determine if selective breeding has led to the establishment of distinct breeds in Oman. Information was compiled from multiple sources to produce a comprehensive review on the breeding, management, economic and cultural use, …
Characterizing The Neuronal Signaling Required For Muscle-Specific And Whole Body Enhanced Proteostasis Effects Of Low Mrna Translation, Marissa N. Ruzga
Characterizing The Neuronal Signaling Required For Muscle-Specific And Whole Body Enhanced Proteostasis Effects Of Low Mrna Translation, Marissa N. Ruzga
Electronic Theses and Dissertations
In the study of aging, there is a common paradigm that organisms allocate energy between surviving stressful conditions and growth/reproduction (Masoro, 2000). Driving mechanisms that favor the former extend lifespan and protect against cellular stress in different animal systems, including C. elegans. Dietary restriction is one such environmental stressor, which leads to downregulation of the energy-intensive process of mRNA translation (Karol, 2009; Tavernarakis, 2008). When knocked down in adulthood, IFG-1, a component of translation regulation, also protects against cellular stress. Protective effects of low translation appear to be orchestrated by certain tissues in C. elegans, namely neurons and …
Atlas-Based Analysis Of The Neural Projections From The Lateral Hypothalamic Area To The Lower Brainstem In The Adult Male Rat, Jessica Valeria Salcido Padilla
Atlas-Based Analysis Of The Neural Projections From The Lateral Hypothalamic Area To The Lower Brainstem In The Adult Male Rat, Jessica Valeria Salcido Padilla
Open Access Theses & Dissertations
Within the last decade, the number of diseases associated with dysregulation of the neural circuits responsible for energy balance, glucosensing, and feeding control has increased. One brain region containing these circuits is the lateral hypothalamic area (LHA), which plays an important role in the sleep/wake cycle, energy balance, and motivated behavior. Although the LHA has been termed a â??feeding centerâ??, other regions within the hindbrain are known for the regulation of similar functions including energy balance, glucosensing, and feeding control. While many studies have explored and reported projections from the LHA to the hindbrain, few have further investigated the interconnections …
The Anti-Diabetic Drug Metformin Disrupts Feeding And Sleeping Behaviors In Drosophila Melanogaster., Lucas Fitzgerald
The Anti-Diabetic Drug Metformin Disrupts Feeding And Sleeping Behaviors In Drosophila Melanogaster., Lucas Fitzgerald
College of Arts & Sciences Senior Honors Theses
Dimethylbiguanide, also known as metformin, is the single most prescribed oral treatment for non-insulin dependent diabetes mellitus, or type 2 diabetes, in Western countries. The primary mechanism of action that metformin acts through is the activation of AMP kinase, an important regulator of energy homeostasis. While the anti-diabetic effects of metformin are well documented, its effects on feeding and sleeping behaviors are not well characterized. Using the model organism Drosophila melanogaster, the mean daily quantity of food consumed was measured and compared between groups treated with several dosages of metformin. Feeding interactions such as meal frequency and length were …
Simvastatin Induces Autophaghy-Mediated Cell Death In Metastatic Breast Cancer Cells, Jessica Allagoa
Simvastatin Induces Autophaghy-Mediated Cell Death In Metastatic Breast Cancer Cells, Jessica Allagoa
Theses (2016-Present)
Breast cancer remains one of the leading causes of cancer deaths among women. Due to the limited effectiveness of current anticancer drugs, ongoing research has extended towards alternative drug categories for potential treatments. Recent findings indicate that statins possess the ability to suppress tumors across various cell types. Traditionally, statins are known as a class of cholesterol-lowering agents and function by inhibiting 3-hydroxy-3-methyl-glutaryl-coenzyme A reductase, a key enzyme in the mevalonate pathway. However, statins can also suppress cell proliferation and ultimately lead to cell death, which includes Type I apoptosis-induced cell death or Type II autophagy-induced cell death. Autophagy is …
Foxo1 Inhibitor, As1842856, Induces Cell Cycle Arrest And Reverses Anticancer Drug-Induced Cytotoxicity In Osteosarcoma Cells, Antanay Hall
Foxo1 Inhibitor, As1842856, Induces Cell Cycle Arrest And Reverses Anticancer Drug-Induced Cytotoxicity In Osteosarcoma Cells, Antanay Hall
Theses (2016-Present)
Forkhead box class O (FOXO)-1 transcription factor controls cell proliferation, apoptosis, oxidative stress, and other cellular activities; FOXO1 has also been implicated in cell cycle regulation. This research project aims to determine the contribution of FOXO1 to cell cycle regulation and response to anticancer drug treatment in osteosarcoma. Osteosarcoma is the most common bone cancer, with most cases occurring in people younger than 30 years old. The study explores the impact of FOXO1 inhibitor AS1842856 on the cytotoxic effects of anticancer drugs in CCHOSD, Hos, and LM7 osteosarcoma (OGS) cell lines. Following chemical inhibition of FOXO1 and anticancer drug treatment, …
Syntaxin-3 Mediates Baseline And Stimulated Mucin Secretion, Brianne Wharton
Syntaxin-3 Mediates Baseline And Stimulated Mucin Secretion, Brianne Wharton
Dissertations & Theses (Open Access)
There are two rates at which airway epithelial cells secrete mucin. The low baseline rate accounts for ciliary clearance, and the high stimulated rate obstructs airways in protection from helminths or in obstructive pulmonary diseases. The exocytosis of mucins occurs via the four-helix SNARE complex. The SNARE proteins contributing helices are the vesicle-SNARE VAMP, and the target-SNAREs SNAP and Syntaxin. Coiling of the complex fuses the granule and plasma membranes to release mucins into the extracellular space. The VAMP and SNAP isoforms mediating baseline and stimulated secretion are known, but the Syntaxin (Stx) isoform remains unknown.
Three candidate exocytic Stx, …
Qualitative Assessment Of Human Embryonic- And Induced Pluripotent Stem Cell Derived Neural Stem Cells Under Cgmp Methods, Michelle Hernandez
Qualitative Assessment Of Human Embryonic- And Induced Pluripotent Stem Cell Derived Neural Stem Cells Under Cgmp Methods, Michelle Hernandez
Electronic Theses, Projects, and Dissertations
Neural stem cell therapies represent a promising tool for the development of regenerative medicine and are being tested in clinical trials for several neurological disorders. However, the clinical applicability of stem cell therapies is dependent on the implementation of current good manufacturing practices (cGMPs) to ensure the quality, safety, and consistency that stem cell products need to meet FDA regulatory requirements. As such, there is a need for a shift to xeno-free methodologies so experimental conditions are cGMP compliant. The purpose of this study is to test a GMP compatible production method to generate multipotent neural stem cells (NSCs) from …
Targeting Tgf-Β During Epithelial-To-Mesenchymal Progression As An Effective Therapy Against Colorectal Cancer, Joyce Fan
Undergraduate Research
Colorectal cancer is one of the most common cancers worldwide. Understanding the mechanisms of colorectal cancer progression is crucial for the development of effective therapeutics. Epithelial-to-mesenchymal transition is a hallmark feature of cancer and is defined as the loss of epithelial cell features, such as apical-basal polarity and high expression of cell adhesion molecules, and the development of mesenchymal features, such as lack of polarity and increased cell mobility. Epithelial-to-mesenchymal is essential for cell migration, proliferation, and tumor growth. Both the TGF-β and SMAD pathway are associated with colorectal cancer progression. TGF-β is crucial to the cellular mechanism of cell …
Ammonium Chemotaxis In Chlamydomonas Reinhardtii, Gabela Nelson
Ammonium Chemotaxis In Chlamydomonas Reinhardtii, Gabela Nelson
LSU Doctoral Dissertations
Analysis of ammonium chemotaxis in Chlamydomonas reinhardtii is largely hindered, compared to that of phototaxis, despite equal importance on flagellated microalgal physiology. A major contribution of this shortfall is the lack of proper assay method. We developed a simple Petri dish assay method in which light is homogenously exposed while patterns of the cellular migration are tracked with a function of time. Using the method, new findings were revealed. First, this research presented that a strain lacking the eyespot organelle required for light gradient-sensing exhibits similar chemotactic behavior compared to a wild-type strain, suggesting Chlamydomonas sense an ammonium gradient not …
Hgs-3 The Influence Of A Tandem Cycling Program In The Community On Physical And Functional Health, Therapeutic Bonds, And Quality Of Life For Individuals And Care Partners Coping With Parkinson’S Disease, Leila Djerdjour, Jennifer L. Trilk
Hgs-3 The Influence Of A Tandem Cycling Program In The Community On Physical And Functional Health, Therapeutic Bonds, And Quality Of Life For Individuals And Care Partners Coping With Parkinson’S Disease, Leila Djerdjour, Jennifer L. Trilk
SC Upstate Research Symposium
Purpose Statement: Several studies have shown that aerobic exercise can have a positive impact on alleviating symptoms experienced by individuals with Parkinson's disease (PD). Despite this evidence, the potential benefits of exercise for both PD patients and their care partners (PD dyad) remain unexplored. This research project investigates the effectiveness, therapeutic collaborations, and physical outcomes of a virtual reality (VR) tandem cycling program specifically designed for PD dyads.
Methods: Following approval from the Prisma Health Institutional Review Board, individuals with PD were identified and screened by clinical neurologists. The pre-testing measures for PD dyads (N=9) included emotional and cognitive status …
Transcriptomic Clues To Protein Homeostasis, Anna Byquist, Lina Dahlberg
Transcriptomic Clues To Protein Homeostasis, Anna Byquist, Lina Dahlberg
WWU Honors College Senior Projects
Protein misfolding is associated with many different diseases such as Alzheimer’s disease, Parkinson’s disease, and cystic fibrosis. Cells prevent the accumulation of misfolded proteins through conserved pathways, including Endoplasmic Reticulum Associated Degradation (ERAD). In the absence of proper ERAD function, cellular homeostasis is disrupted, and cells can become stressed. The ERAD mechanism is not fully understood, but it is becoming clear that the intersection of gene regulation and protein degradation are tightly linked (1). We approached this intersection using a strain of C. elegans that is lacking the gene F26F4.9, which encodes a putative ortholog of the mammalian ERAD gene …
Pulsed Electric Fields Sensitize Methicillin-Resistant Staphylococcus Aureus To Antibacterial Therapies And Stimulate Host Immune Responses, Alexandra E. Chittams-Miles
Pulsed Electric Fields Sensitize Methicillin-Resistant Staphylococcus Aureus To Antibacterial Therapies And Stimulate Host Immune Responses, Alexandra E. Chittams-Miles
Biomedical Sciences Theses & Dissertations
This research explores the impact of nanosecond pulsed electric fields (nsPEF) on two fronts: their immune stimulatory effects and their potential as a novel strategy to enhance the sensitivity of Methicillin-resistant Staphylococcus aureus (MRSA) to clinically relevant antibiotics. While pulsed electric fields have been reported to have an immune stimulatory effect, the mechanisms responsible for these effects have yet to be determined.
Our investigation addresses the rising concern of MRSA derived skin and soft tissue infections (SSTIs). Consistent with other publications, we found that nsPEF alone cause modest inactivation of planktonic MRSA. We then investigated the effects of nsPEF in …
Whole Genome Sequencing Of The Whipple Azalea Garden, Afia Asamoah, Elizabeth Toth, Amy Vasudevan, Sarah Justice, Elizabeth D. Hasenmyer
Whole Genome Sequencing Of The Whipple Azalea Garden, Afia Asamoah, Elizabeth Toth, Amy Vasudevan, Sarah Justice, Elizabeth D. Hasenmyer
Lux et Fides: A Journal for Undergraduate Christian Scholars
Taylor University houses a large collection of North American azaleas. Deciduous azalea species, like those found on campus, are vastly understudied. This project aims to provide publicly available genomic data which will be used to study the genetic basis behind their physical characteristics and their relatedness to other species.
Investigating Optimal Laboratory Growth Conditions Of Gracilibacillus Halotolerans In Media Supplemented With Salt, Isaac Young
Investigating Optimal Laboratory Growth Conditions Of Gracilibacillus Halotolerans In Media Supplemented With Salt, Isaac Young
Annual Research Symposium
As interest continues to grow in the field of persister cells and their morphology, there arises an ever-evolving desire to further understand specific strains of bacteria that exemplify the qualities of seemingly anomalous survival regardless of anti-bacterial treatment. In the case of the Gracilibacillus halotolerans, a halotolerant extremophile extracted from the Great Salt Lake with known persistent characteristics, uncovering its optimal growth conditions was essential for future investigations. Identifying the optimal salinity for the growth of G. halotolerans will allow us to standardize our growth methods, uncover several mechanisms of saline tolerance, and add to future investigations of persistence with …
Methamphetamine-Induced Dna Double-Stranded Breaks: The Impact Of The Dopamine Transporter And Insights Into The Mechanisms Of Dna Damage In Mouse Neuro 2a Cells, Lizette Couto
Dissertations, Theses, and Capstone Projects
Methamphetamine (METH) abuse remains a global health concern, with emerging evidence highlighting its genotoxic potential. In the central nervous system METH enters dopaminergic cells primarily through the dopamine transporter (DAT), which controls the dynamics of dopamine (DA) neurotransmission by driving the reuptake of extracellular DA into the presynaptic neuronal cell. Additional effects of METH on the storage of DA in synaptic vesicles lead to the dysregulated cytosolic accumulation of DA. Previous studies have shown that after METH disrupts intracellular vesicular stores of DA, the excess DA in the cytosol is rapidly oxidized. This generates an abundance of reactive oxygen species …
Kif3a Tail Domain Phosphorylation Is Not Required For Ciliogenesis In Mouse Embryonic Fibroblasts, Ayoola Fasawe, Jessica M. Adams, Martin Engelke
Kif3a Tail Domain Phosphorylation Is Not Required For Ciliogenesis In Mouse Embryonic Fibroblasts, Ayoola Fasawe, Jessica M. Adams, Martin Engelke
Faculty Publications – Biological Sciences
Primary cilia are essential signaling organelles that protrude from most cells in the body. Heterodimeric kinesin-2 (KIF3A/KIF3B/KAP3) powers several intracellular transport processes, including intraflagellar transport (IFT), essential for ciliogenesis. A long-standing question is how a motor protein is differentially regulated for specific cargos. Since phosphorylation of the KIF3A tail domain was suggested to regulate the activity of kinesin-2 for ciliogenesis, similarly as for the cytosolic cargo N-Cadherin, we set out to map the phosphosites involved in this regulation. Using well-characterized Kif3a−/−; Kif3b−/− mouse embryonic fibroblasts, we performed ciliogenesis rescue assays with a library of phosphomimetic mutants comprising all …
Osteohistological Assessment Of Edmontosaurus Radii From The Liscomb Bonebed, Prince Creek Formation, North Slope, Alaska, Emma Griffin
Osteohistological Assessment Of Edmontosaurus Radii From The Liscomb Bonebed, Prince Creek Formation, North Slope, Alaska, Emma Griffin
Student Research Poster Presentations 2024
Hadrosaurs were one of the most diverse dinosaur groups in the Late Cretaceous period and are known for their numerous articulated skeletons and monodominant bonebeds (Wosik et al., 2020). They are more commonly known as duck-billed dinosaurs and are found globally including latitudinal extremes such as the artic and Antarctica. Edmontosaurus, a genus of hadrosaur, are herbivores and are very large growing up to 8,000 pounds. Edmontosaurus were known to travel in herds as a defense mechanism and were one of the last non-avian dinosaurs living during the late Campanian stage through the end of the Maastrichtian stage, right up …
Understanding Cellular Dynamics: Investigating A Yeast-Two Hybrid Protein-Protein Interaction, Riok3:Cse1l; Also By Investigating Trogocytosis Of Cd4+ T Cells From Rhog-/- Mice, Brittnee N. Crane
Graduate Student Theses, Dissertations, & Professional Papers
Rift Valley fever virus (RVFV) is a negative-sense virus that was first described in 1930 when it was isolated from sheep during an outbreak. In the last 25 years there has been a spread in the geographical range into the Middle East. The most susceptible animals are cattle, goats, sheep, and camels. The most overt symptom of livestock infection is that infected pregnant animals experience spontaneous abortion. Humans are susceptible as well and symptoms range from mild febrile illness to liver necrosis, blindness, hemorrhagic fever, and death. An important player in the cellular innate response to RVFV infections is the …