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Articles 1 - 13 of 13
Full-Text Articles in Life Sciences
Seasonal Variation In Home-Range And Core-Area Size In Verreaux's Sifaka, Brynn Harshbarger
Seasonal Variation In Home-Range And Core-Area Size In Verreaux's Sifaka, Brynn Harshbarger
Theses, Dissertations and Capstones
Primates living in seasonal forests must adapt to extreme fluctuation in resource availability. Verreaux’s sifaka ( ) live in Madagascar’s highly seasonal tropical dry forests and experience periods of extreme resource abundance and scarcity. Home- range and core-area size were measured using 95% and 50% kernel estimation, and 95% minimum convex polygons to compare seasonal shifts in space use based on resource availability. There have been no long-term space use studies on Verreaux’s sifaka; therefore, we do not know how their space use changes over time in an environment which is both highly seasonal and highly variable. Our study leverages …
The Effects Of Concussion On Quantity Of Sleep And Quality Of Sleep, Taren Asheton Bone
The Effects Of Concussion On Quantity Of Sleep And Quality Of Sleep, Taren Asheton Bone
Theses, Dissertations and Capstones
This study observed how a concussion's effects change the quantity and quality of sleep in collegiate athletes. There is a lack of research pertaining to this topic, explicitly involving collegiate athletes and the changes in sleep outcomes during concussion recovery from a concussion. The study design is a convenient cohort in the field involving athletes from two local universities. Participants wore a Readiband™ device for seven to ten days or throughout their concussion recovery. There were differences in total minutes in bed and calculated minutes in bed between concussed and non-concussed participants. This study indicates that concussion affects the quantity …
Crippling Rapid Evolution Of Metastasis And Drug Resistance In A549 Non-Small Cell Lung Cancer Cells With The Clinically Relevant Hsp90 Inhibitor Auy922, Nickolas Anthony Bacon
Crippling Rapid Evolution Of Metastasis And Drug Resistance In A549 Non-Small Cell Lung Cancer Cells With The Clinically Relevant Hsp90 Inhibitor Auy922, Nickolas Anthony Bacon
Theses, Dissertations and Capstones
The ability for species to evolve new features in response to changing circumstances in order to survive and propagate is a ubiquitous observation on both the macroscopic and microscopic levels of living systems. It should be no surprise, then, that diseases such as cancer utilize their own forms of adaptation to perpetuate themselves when exposed to external threats. Indeed, concepts drawn from Darwinian evolution are now widely accepted to help explain certain aspects of carcinogenesis and malignant progression, the sum of which have come to be known as the theory of tumor evolution. Since metastasis and drug resistance are features …
Assessing The Toxicity Of A Reconstituted Water Simulating Streams Influenced By Mountaintop Mining In Central Appalachia, Benjamin David Browning
Assessing The Toxicity Of A Reconstituted Water Simulating Streams Influenced By Mountaintop Mining In Central Appalachia, Benjamin David Browning
Theses, Dissertations and Capstones
Freshwater ecosystems in Central Appalachia experience increased concentrations of manganese (Mn) and total dissolved solids from the runoff of surface mines and valley fills. Biological communities have been impacted by these surface mining operations and it has been suggested that the increase in total dissolved solids may contribute to these negative effects, but standard laboratory toxicity tests have not found increased concentrations of total dissolved solids to have such negative effects as seen in the field. The elevated total dissolved solids in mining influenced streams may only be toxic in conjunction with another toxicant that is presence in these systems …
The Effects Of Fire On Oak-Forest Plant Communities Along Soil Moisture Gradients: A 25-Year Study, Rebekah Frances Shupe
The Effects Of Fire On Oak-Forest Plant Communities Along Soil Moisture Gradients: A 25-Year Study, Rebekah Frances Shupe
Theses, Dissertations and Capstones
In the eastern U.S., fire is a natural disturbance process in Quercus (oak) forests. Fire is thought to promote oak regeneration and plant diversity by reducing competition, preparing a suitable seedbed, and increasing light availability. However, the era of fire suppression that began in the early 20th century is thought to have negatively impacted oak regeneration and the biodiversity of the understory layer. In this study, we examined the effects of prescribed fire on tree regeneration and the understory layer over 25 years. From a study initiated in 1994, we resampled 45 permanent vegetation plots measuring 1250 m2 …
Role Of Na/K-Atpase Non-Enzymatic Signaling In Renal Proximal Tubule Sodium Transport, Shreya Tapan Mukherji
Role Of Na/K-Atpase Non-Enzymatic Signaling In Renal Proximal Tubule Sodium Transport, Shreya Tapan Mukherji
Theses, Dissertations and Capstones
The renal proximal tubule (RPT) is the center stage for renal handling of Na+ , a potent determinant of systemic Na+ and volume homeostasis in health and disease. In the RPT, through its classic ion-pumping function, Na + /K+ -ATPase (NKA) generates the Na+ gradient that drives apical Na+ absorption, mostly through Na+ /H+ exchanger (NHE3). In contrast, pharmacological evidence suggests that the activation of the NKA non-enzymatic signaling function, through Src and other signaling partners, triggers a cellular redistribution of NKA and NHE3 that decreases transcellular Na+ flux in cultured RPT cells. However, the physiological relevance of the nonenzymatic …
Na/K-Atpase Alphα1 Regulates Adipogenesis Via Its Conserved Caveolin Binding Motif, Minqi Huang
Na/K-Atpase Alphα1 Regulates Adipogenesis Via Its Conserved Caveolin Binding Motif, Minqi Huang
Theses, Dissertations and Capstones
The Na/K-ATPase (NKA) was identified in 1957 by Dr. Jens C. Skou. It belongs to the P-type ATPase family, which can actively transport ions across cell membranes by using the energy from adenosine triphosphate (ATP) hydrolysis. During the second half of the 20th century, the molecular mechanism of the NKA catalytic cycle was clarified, and the isoform diversity of NKA in different species and organs was identified. The active ion transport through NKA generates cell membrane ion gradients and the electric potential. Hence, the enzymatic function of NKA is critical for cell viability as well as multiple physiological processes including …
Potential Counter Regulatory Effects Of A Gut Microbiota Metabolite In Alleviating Down-Regulation Krüppel-Like Factor 4 In Intestinal Inflammation, Ylva Forslund
Theses, Dissertations and Capstones
Inflammatory bowel disease (IBD) is a medical condition characterized by chronic inflammation of the intestinal epithelium. Krüppel-like factor 4 (KLF4), a zinc finger transcription factor, is vital for maintaining intestinal epithelial homeostasis. KLF4 promotes differentiation of goblet cells that generate the protective mucus layer. Reduced goblet cell number and defective mucus layer are associated with IBD. Shortchain fatty acids (SCFA) are known to play an important role in the maintenance of a strong and healthy intestinal epithelial layer and also in goblet cell differentiation. However, whether the positive effects of SCFAs on goblet cells are mediated, at least partly, via …
From Crib To Bench: Understanding Neonatal Opioid Withdrawal Syndrome (Nows) Using A Novel Rodent Model, Sarah Stevens
From Crib To Bench: Understanding Neonatal Opioid Withdrawal Syndrome (Nows) Using A Novel Rodent Model, Sarah Stevens
Theses, Dissertations and Capstones
As the opioid epidemic continues to grow, opioid use among pregnant women is increasing significantly. This has led to a steady rise in the number of infants born with neonatal opioid withdrawal syndrome (NOWS). Although short-term withdrawal symptoms associated with NOWS are well characterized, there are many gaps in our understanding of the short and long-term effects of prenatal opioid exposure. In CHAPTER 1, we describe the clinical presentation, associated neurodevelopmental challenges, and current treatments of NOWS. Our current understanding of the neuropathology of NOWS is limited, and therefore further research is needed. However, current animal models are limited by …
Targeting Epigenetic Mechanisms In Endometriosis, Sarah Elizabeth Brunty
Targeting Epigenetic Mechanisms In Endometriosis, Sarah Elizabeth Brunty
Theses, Dissertations and Capstones
Endometriosis is a complex and elusive gynecological disease in which the inner lining of the uterus grows in locations outside of the uterus and forms lesions. It is known to affect 1 in 9 women of reproductive age worldwide. Symptoms of endometriosis include severe pain, heavy periods, and infertility. While multiple theories of origin exist, none fully encompass all aspects of the disease, although all theories agree that this is an inflammation-driven disease. Due to this, many researchers are turning towards epigenetics to explain the initiation and progression of endometriosis. However, what is causing these epigenetic changes is still a …
The Effects Of Endocrine Disrupting Chemicals On Plants, Christian Mathew Pridemore
The Effects Of Endocrine Disrupting Chemicals On Plants, Christian Mathew Pridemore
Theses, Dissertations and Capstones
Endocrine disrupting chemicals (EDCs) are a diverse group of chemicals which can have a detrimental effect on human health, affecting any physiological body system sensitive to hormonal changes. Human exposure to EDCs is inevitable due to their prevalence in modern living; EDCs are integral compounds found in everyday items with which humans interact and ingest. These, along with other indirect avenues leading to EDC exposure, pose a threat to both human health and to the health of wildlife and agricultural environments. Studies on the effects of EDCs on plants can be substantially informative and necessary for progress towards solving the …
A Water Quality And Contaminant Source Assessment Of Arbuckle Creek In Fayette County, West Virginia, Sarah Ashby Simonton
A Water Quality And Contaminant Source Assessment Of Arbuckle Creek In Fayette County, West Virginia, Sarah Ashby Simonton
Theses, Dissertations and Capstones
Arbuckle Creek, located in Minden, West Virginia, is a stream that runs through Oak Hill, WV and is characterized by the presence of the Oak Hill Wastewater Treatment Plant and the history of the contamination of polychlorinated biphenyl (PCBs) from the copious amount of contamination from the Shaffer Equipment Site and the pollution from mining completed in the area throughout the 1900’s. In order to assess the reaches of the current water quality, samples were collected and assessed for benthic macroinvertebrates, water parameters, benthic algae, and habitat. This was accomplished using the West Virginia Department of Environmental Protection (WVDEP) agency’s …
An Exceptionally Small New Polycotylid Plesiosaur (Reptilia: Sauropterygia) With Raptorial Eyes From The Western Interior Seaway Of North America, Robert O’Brien Clark
An Exceptionally Small New Polycotylid Plesiosaur (Reptilia: Sauropterygia) With Raptorial Eyes From The Western Interior Seaway Of North America, Robert O’Brien Clark
Theses, Dissertations and Capstones
Polycotylidae is a family of plesiosaurian marine reptiles that evolved during the Early Cretaceous and radiated into multiple genera during the Late Cretaceous, achieving a worldwide distribution. Derived polycotylids of the subclade Polycotylinae have a gracile and elongated rostrum, homodont dentition, an extended mandibular symphysis, and foreshortened temporal fenestrae. In this thesis, I describe a small and highly derived new polycotylid taxon based on three specimens from the Campanian of the Western Interior Seaway in North America. A high number of maxillary teeth, fused neural arches, propodials with well-defined facets, and heavily remodeled cortical bone indicate the specimens are adults, …