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Articles 1 - 15 of 15
Full-Text Articles in Medicine and Health Sciences
Novel Word Learning Of Children With Hearing Impairment And Children With Typical Hearing, Matthew R. Clark
Novel Word Learning Of Children With Hearing Impairment And Children With Typical Hearing, Matthew R. Clark
Theses, Dissertations and Capstones
Children with hearing impairment may be at risk for reading difficulty due, in part, to delayed vocabulary development. However, advances in amplification technology, most notably cochlear implant technology, make it possible for children with profound hearing loss to acquire oral language. This study asked if novel word learning differed between children with typical hearing and those with severe to profound hearing loss who either wore hearing aids or had cochlear implants. Children learned nonsense words as names for Beanie Babies during a play scenario and were later asked to identify and name each Beanie Baby using its correct nonsense word …
Degree Of Vocal Handicap In Two Age Groups Of Individuals, Whitney N. Casey-Heatherman
Degree Of Vocal Handicap In Two Age Groups Of Individuals, Whitney N. Casey-Heatherman
Theses, Dissertations and Capstones
A healthy, functional voice is a critical aspect of daily life, allowing the expression of basic needs as well as interaction within an individual’s community. Unfortunately, for many adults the voice declines in later life. The purpose of this study was to investigate how normal vocal aging affects the quality of life of the elderly. Two hundred two adults without voice disorders from two age groups (30-50 and 65-85) completed the Voice Handicap Index. Results indicated that the older group felt a greater degree of vocal handicap than the younger age group [F (1,156) = 4.944, p = 0.028]. Implications …
Efficacy Of Deferasirox In Preventing Complications Of Iron Overload In The Iron Overloaded Gerbil, Rabaa M. Al-Rousan
Efficacy Of Deferasirox In Preventing Complications Of Iron Overload In The Iron Overloaded Gerbil, Rabaa M. Al-Rousan
Theses, Dissertations and Capstones
Iron overload is a significant, world-wide problem that results in several chronic diseases including cardiovascular, hepatic and pancreatic complications.The newly developed, orally effective, iron chelating agent deferasirox is thought to offer tremendous promise as an alternative to deferoxamine. However, the efficacy and safety profile of deferasirox is not yet clear. In the present study, the efficacy of deferasirox in removing iron from target tissues has been examined using the gerbil model of iron overload. Deferasirox administration resulted in a significant reduction of iron from cardiac and hepatic tissue. In addition deferasirox reduced iron induced increase in cardiac and hepatic oxidative …
Control Of Myosin Motor Activity And Actin Filament Translation By Alteration Of Assay Reducing Potential, Siva Krishna Nalabotu
Control Of Myosin Motor Activity And Actin Filament Translation By Alteration Of Assay Reducing Potential, Siva Krishna Nalabotu
Theses, Dissertations and Capstones
The use of biomolecular motors for nanotechnological applications has been impaired by an inability to control biomolecular motor activity in a temporal fashion. Previous data has suggested that myosin activity can be modulated by inducing changes in the degree of myosin oxidation. The hypothesis of this study is that myosin motor activity can be regulated by altering the amount of antioxidants and reducing agents present in assay solution. To test this hypothesis we systematically altered the concentration of reducing agents and examined the effects of these changes on myosin-dependent actin filament translation. Our findings indicate that myosin activity can be …
Nursing Faculty Shortage: Nurses' Perceptions As A Key To Administrative Solutions, Evelyn M. Klocke
Nursing Faculty Shortage: Nurses' Perceptions As A Key To Administrative Solutions, Evelyn M. Klocke
Theses, Dissertations and Capstones
The nursing faculty shortage is well documented. Higher education administrators turn away qualified student applicants because of the lack of qualified nursing faculty. Furthermore, they find recruitment and retention of qualified nursing faculty a challenge. The purpose of this study was to explore perceptions of the nursing faculty role, causes of the faculty shortage, and solutions to the shortage as perceived by: 1) nurses currently in a faculty role and 2) nurses with a master’s degree who were not employed in a full-time faculty position. A qualitative study using the phenomenological method was undertaken. Two groups of nurses were interviewed. …
Effect Of Growth Hormone On Hippocampal Synaptic Function During Sleep Deprivation, Eun Young Kim
Effect Of Growth Hormone On Hippocampal Synaptic Function During Sleep Deprivation, Eun Young Kim
Theses, Dissertations and Capstones
Long term potentiation (LTP) in the hippocampus is considered a cellular basis of learning memory. Sleep deprivation, especially rapid eye movement (REM) sleep deprivation, impairs learning and memory as well as LTP. Since most of the previous LTP studies were conducted in the in vitro condition, the full consequences of sleep deprivation (SD) in the living animal are yet to be found. Thus, I tested hippocampal LTP in living animals after 5 days of REM sleep deprivation to determine the effect of SD in vivo. SD also disrupts growth hormone (GH) release. Recent evidence indicates that GH regulates cognitive and …
Loss Of Ski Expression In Testicular Cancer Leads To An Enhanced Invasive Phenotype Through Both Bmp-Dependent And Bmp-Independent Pathways, Amy N. Nash
Theses, Dissertations and Capstones
The proto-oncogene SKI is a transcription factor and a co-repressor of the TGFβ superfamily, including TGF
β and BMP. However, additional data suggests that SKI may function as a tumor suppressor in some cell types. The TGFβ superfamily has been implicated in cancer progression and germ cell migration. Testicular cancer afflicts men during their peak reproductive years and is the most common cancer among men of this age group. Cisplatin-based chemotherapy is the standard treatment for testicular cancer. This treatment can lead to undesirable side effects, including infertility. We have shown that SKI expression is decreased in testicular germ cell …
Enumeration Of Endothelial Progenitor Cells In Hind Limb Suspended Rats And The Mechanics Of Endothelial Wound Healing, Jarrod Matthew Pennington
Enumeration Of Endothelial Progenitor Cells In Hind Limb Suspended Rats And The Mechanics Of Endothelial Wound Healing, Jarrod Matthew Pennington
Theses, Dissertations and Capstones
The endothelium repairs itself through two methods. One is by the activity of circulating endothelial progenitor cells (EPCs). EPCs are immature endothelial cells that circulate the bloodstream that are capable of proliferation and differentiation into mature endothelium. It is thought that EPCs contribute to the repair and replacement of damaged endothelial cells in the process of reendothelialization. Physical inactivity and bed rest are known to be deleterious to the endothelium. It is possible that this inactivity is also deleterious to the number of viable EPCs, which would reduce the ability of the endothelium to repair itself. We used hind limb …
Prevalence Of Intestinal Parasite Infection In Symptomatic And Asymptomatic Dogs In Southwestern West Virginia: The Potential Impact On Human Health, Tashina Marie Savilla
Prevalence Of Intestinal Parasite Infection In Symptomatic And Asymptomatic Dogs In Southwestern West Virginia: The Potential Impact On Human Health, Tashina Marie Savilla
Theses, Dissertations and Capstones
Most dog owners are unaware of asymptomatic infection and of the possibility of contracting zoonotic parasites from their dogs. We hypothesized that parasite infection is: associated with one or more symptoms; independent of gender and age; and independent of anthelmintic usage. Stool samples were collected from 231 dogs in Kanawha County, West Virginia, and were examined by simple fecal flotation. Parasitic prevalence was found to be 23% for Ancylostoma caninum, 8% for Trichuris vulpis, 7% for Toxocara canis, 4% for Isospora species, and 32.5% overall. There was no significant relationship between infection and gender, nor between infection and symptom for …
Effects Of Microgravity On Cancer Stem Cells Cultured In A Nasa Developed Bioreactor: Chemotherapeutic Implications., Sarah Elizabeth Daron Kelly
Effects Of Microgravity On Cancer Stem Cells Cultured In A Nasa Developed Bioreactor: Chemotherapeutic Implications., Sarah Elizabeth Daron Kelly
Theses, Dissertations and Capstones
The purpose of this study was to investigate the effects of simulated microgravity on cancer cell growth. Simulated microgravity is a condition in which cells are in constant free-fall and in which they are able to grow suspended without the shear and stress. Microgravity allows for important insights into the cellular mechanism and may be key in understanding why some cells thrive in this condition and others go into apoptosis. Cancer stem cells (CSCs) are considered a subset of the bulk tumor responsible for initiating and maintaining cancer. SAOS-2 is a human bone cancer cell line which consists of a …
Regulation Of Alginate Production Of Pseudomonas Aeruginosa Pseudomonas Aeruginosa, Fredrick Heath Damron
Regulation Of Alginate Production Of Pseudomonas Aeruginosa Pseudomonas Aeruginosa, Fredrick Heath Damron
Theses, Dissertations and Capstones
Pseudomonas aeruginosa (P.a.) is a major threat to the health and well being of a person living with cystic fibrosis (CF). P.a. is capable of conversion to mucoidy or alginate overproducing phenotype. Mucoidy facilitates the chronic infection of P.a. infection in the CF lung. Mutations in the anti-sigma factor mucA, result in activation of the sigma factor AlgU which promotes expression of alginate through the alginate biosynthetic operon. However, P.a. can produce alginate independent of mucA mutation via a mechanism known as regulated proteolysis. Proteases AlgW and MucP can degrade MucA to liberate and activate AlgU. In this dissertation, two …
Identification And Characterization Of Novel Sir3/Mecp2-Chromatin Interactions, Nicholas L. Adkins
Identification And Characterization Of Novel Sir3/Mecp2-Chromatin Interactions, Nicholas L. Adkins
Theses, Dissertations and Capstones
The eukaryotic genome is packaged into chromosomes that are made up of a highly organized and heavily regulated structure called chromatin. The proteins involved in the compaction of DNA into this condensed state are mostly understood at the level of the structure of the nucleosome. The higher order arrangement of chromatin and how it effects gene regulation is only partially understood and characterized. The compaction of nucleosomal arrays into 30-nm and higher structures are partially the responsibility of architectural, or structural, chromatin associated proteins. The following dissertation analyzes the individual chromatin contributions of two well studied architectural proteins, the yeast …
Deferasirox Decreases Age-Associated Iron Accumulation In The Aging F344bn Rat Heart, Ravi K. Arvapalli
Deferasirox Decreases Age-Associated Iron Accumulation In The Aging F344bn Rat Heart, Ravi K. Arvapalli
Theses, Dissertations and Capstones
It is thought that aging in rats and humans is associated with increases in iron accumulation and these increases in iron may be associated with increased cellular apoptosis. Here we examine the relationship between cardiac iron levels and cardiomyocyte apoptosis in aged F344BN rats which were treated with an oral iron chelator (Deferasirox; 100mg/kg body. weight/day) for 6 months. Compared with 6- month controls, the levels of cardiac iron, cardiac apoptosis, FLC and DMT-1 were higher in 33-month hearts. Deferasirox treatment for six months decreased cardiac iron and this was associated with decreases in the number of apoptotic cardiac myocytes. …
Regulation Of Alpha- And Beta-Actin Isoforms In The Contracting A7r5 Smooth Muscle Cell, Dawn Leah Brown-Turner
Regulation Of Alpha- And Beta-Actin Isoforms In The Contracting A7r5 Smooth Muscle Cell, Dawn Leah Brown-Turner
Theses, Dissertations and Capstones
Two isoforms of actin have been found to be present in A7r5 smooth muscle cells, α- and β-actin. This body of work sets out to examine the different regulatory factors of the two actin isoforms during smooth muscle contraction. The response of the actin isoforms to phorbol 12, 13-dibutyrate (PDBu) is markedly different. α-Actin remodels to podosomes around the periphery of the cell, while β-actin merely shortens. One protein involved in smooth muscle contraction induced by PDBu is protein kinase C (PKC). Two inhibitors of PKC, staurosporine and bisindolymaleimide, were used prior to PDBu stimulation and after PDBu stimulation to …
Impact Of The Short-Term Consumption Of A Moderately High Fat Diet On Nitric Oxide Production And Bioavailibility, Kan Huang
Theses, Dissertations and Capstones
Nitric oxide (NO) plays an essential role in the regulation of numerous biological processes. Its bioavailability is assured by a well regulated balance between NO generation and NO removal. Disruptions in this balance contribute to the pathogenesis of various diseases, including hypertension, Alzheimer’s disease, diabetes mellitus and arthritis. Many factors contribute to the maintenance of NO bioavailability by controlling nitric oxide synthase (NOS) expression, NOS activity, the availability of substrates and cofactors involved in the generation of NO by NOS, levels of reactive oxygen species (ROS), and the formation and mobilization of NO reservoirs. Dietary factors have a significant impact …