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C-Reactive Protein, Autoimmunity, And Inflammation In The Central Nervous System, Tyler T. Wright Jan 2015

C-Reactive Protein, Autoimmunity, And Inflammation In The Central Nervous System, Tyler T. Wright

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C-reactive protein (CRP) is an acute phase reactant whose blood concentration rises in response all types of inflammation. And while CRP is widely used as a clinical marker of inflammation, it has several biological functions, e.g. activation of the classical complement cascade and binding Fcγ receptors in order to mediate multiple immune processes. The full extent of CRP’s physiological activities has not yet been fully elucidated, but there is significant evidence to establish that CRP plays an important role in the onset and progression of autoimmune disease. Seminal work from our lab showed that human CRP, hepatically expressed in transgenic …

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Examination Of The Dynamic Assembly Equilibrium For E. Coli Clpb, Jiabei Lin Jan 2015

Examination Of The Dynamic Assembly Equilibrium For E. Coli Clpb, Jiabei Lin

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As a member of the Clp/Hsp 100 chaperone family, Escherichia coli ClpB is able to disaggregate denatured proteins with assistance of DnaKJE co-chaperones to help cell survive under stress. However, the working mechanism of ClpB disaggregation activity remains unclear. The active structure of ClpB is shown to be a hexameric ring and ATP binding and hydrolysis are required for ClpB to perform its chaperone activity. Thus, studying the energetics and kinetics of the ATP linked ClpB assembly equilibrium is essential for the quantitative examination of ClpB - protein substrate interaction to fully reveal its disaggregation mechanism. ATPgS (a slowly hydrolysable …

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Three Studies On Cardiovascular Health: Modifiable Risk Factors And Health Expenditures In Medicare, Kristal Jo Aaron Jan 2015

Three Studies On Cardiovascular Health: Modifiable Risk Factors And Health Expenditures In Medicare, Kristal Jo Aaron

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This dissertation comprises a series of studies conducted on modifiable risk factors as they contribute to cardiovascular health and disease and their associated health service expenditures and utilization. Specific topics in this compilation include (1) exploring the role of dietary sodium and potassium intake in cardiovascular health and disease; (2) examination of direct health expenditures in the Medicare-linked REasons for Geographic And Racial Differences in Stroke (REGARDS) cohort as associated with Life’s Simple 7 (LS7), a composite measure of cardiovascular health defined by the American Heart Association (AHA) that is based on seven modifiable risk factors (blood pressure, blood cholesterol, …

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The Regulation Of Vitamin A Metabolism, Mark Adams Jan 2015

The Regulation Of Vitamin A Metabolism, Mark Adams

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Bioactive vitamin A takes form as several molecules, among them all-trans-retinoic acid (RA) is the major form and influences a wide range of biological processes. RA must be synthesized through a two-step mechanism, where all-trans-retinol is first oxidized to all-trans-retinaldehyde by retinol dehydrogenases (RDHs) and retinaldehyde is further oxidized to RA by retinaldehyde dehydrogenases (RALDHs). The first step, retinol to retinaldehyde conversion is the rate limiting step and therefore a likely target of mechanisms that modulate RA synthesis. Despite this, many of the enzymes that are involved in retinol and retinaldehyde interconversion have yet to be identified and thus many …

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Competition From New Neurons Drives Circuit Refinement In The Adult Dentate Gyrus, Elena W. Adlaf Jan 2015

Competition From New Neurons Drives Circuit Refinement In The Adult Dentate Gyrus, Elena W. Adlaf

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The hippocampus encodes sensory information into memories. The dentate gyrus (DG) region is viewed as the entry point into the hippocampus, receiving sensory and spatial signals from perforant path axons of the entorhinal cortex (EC). Ever since researchers discovered a neurogenic niche in the subgranular zone (SGZ) of the DG in adult animals and humans, many studies have been aimed at discovering how these continually proliferating granule cells (GCs) contribute to the network. Immature GCs have dendrites that project densely into the molecular layer alongside mature GCs and there is morphological evidence that immature excitatory spines preferentially synapse onto existing …

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Evaluation Of The Productive Efficiency Of Nurse Practitioners In A Nurse Managed Center In A Highly Restrictive Scope-Of-Practice State, Faraz Ahmed Jan 2015

Evaluation Of The Productive Efficiency Of Nurse Practitioners In A Nurse Managed Center In A Highly Restrictive Scope-Of-Practice State, Faraz Ahmed

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The purpose of this study is to determine the productive efficiency of Nurse Practitioners (NP) in a Nurse Managed Center (NMC) in a highly restrictive Scope-of-Practice (SOP) state. NPs are skilled, cost effective and quality health care providers and are considered a highly competitive option for increasing access while reducing health care costs. However, it is not clearly known if NPs are the most productively efficient at delivering this reduced cost of health care. The theories of Complex Adaptive Systems (CAS) and Resource Based View (RBV) were used as a framework to develop the hypotheses that examined the productive efficiency …

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Pathophysiology And Metabolic Dysfunction Following Polytrauma, Robert Mackay Akscyn Jan 2015

Pathophysiology And Metabolic Dysfunction Following Polytrauma, Robert Mackay Akscyn

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Polytrauma, a combination of injuries to more than one body part or organ system, is common in modern warfare and in automobile and industrial accidents. The combination of injuries can include burn, fracture, hemorrhage, trauma to the extremities, and trauma to specific organ systems. These injuries are highly survivable when occurring singly. However, when they occur in combination the prognosis is worsened. To investigate the effects of combined injuries, we have developed a new and highly reproducible model of polytrauma. This model combines burn injury with soft tissue and gastrointestinal (GI) tract trauma. Male Sprague Dawley rats were subjected to …

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The Effect Of Thioredoxin-Interacting Protein Induced Microrna-200 Family Members On Pancreatic Beta Cells, Stephen Filios Jan 2015

The Effect Of Thioredoxin-Interacting Protein Induced Microrna-200 Family Members On Pancreatic Beta Cells, Stephen Filios

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Pancreatic beta cells secrete insulin to maintain normal blood glucose levels and allow cells of the body to use glucose. However, in diabetes, there is beta cell dysfunction and pancreatic beta cells undergo programmed cell death leading to inadequate insulin production and secretion. Thioredoxin-Interacting Protein (TXNIP) is a ubiquitously expressed protein, 46 kDa in size, which is an arrestin protein family member. Unique to this member of the arrestin family, however, is its ability to bind to, and reduce, thioredoxin. The TXNIP gene is increased in pancreatic islets more than any other gene in response to high levels of glucose. …

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Safety Culture And Patient Harm, Alfonso Gatmaitan Jan 2015

Safety Culture And Patient Harm, Alfonso Gatmaitan

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SAFETY CULTURE AND PATIENT HARM EVENTS: A CONTINGENCY THEORY PERSPECTIVE IN THE CONTEXT OF COMPLEX ADAPTIVE SYSTEMS ALFONSO GATMAITAN ADMINISTRATION-HEALTH SERVICES ABSTRACT This study examines the correlation between a Culture of Patient Safety as measured by hospital staff surveys and actual patient harm attributed to hospital performance. It is generally accepted by health care management leaders that the presence of a strong culture of patient safety has become a critical component in reducing patient harm. However, little empirical evidence within multiple hospitals over time exists to support this belief. Healthcare managers can utilize this evidence in formulating patient safety improvement …

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A Redescription Of The Cretaceous Marine Turtle Ctenochelys Acris Zangerl, 1953 And A Systematic Revision Of The 'Toxochelyid'-Grade Taxa Using Cladistic Analysis, Andrew Douglas Gentry Jan 2015

A Redescription Of The Cretaceous Marine Turtle Ctenochelys Acris Zangerl, 1953 And A Systematic Revision Of The 'Toxochelyid'-Grade Taxa Using Cladistic Analysis, Andrew Douglas Gentry

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Within this thesis are two separate articles, each representing a distinct chapter. The first chapter is a redescription of the ‘toxochelyid’-grade marine turtle Ctenochelys acris Zangerl, 1953. This redescription, based on several nearly complete specimens from the early Campanian Mooreville Chalk of Alabama, reveals multiple previously undescribed autapomorphic characteristics of this species and contributes significantly to our understanding of ‘toxochelyid’ alpha taxonomy. The second chapter is comprised entirely of the results of multiple cladistic analyses of the ‘toxochelyid’-grade taxa that produce a hypothesized phylogenetic system of classification for this clade. 108 characters from the cranium, carapace, plastron, and appendicular skeleton …

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Kinomic Profiling And Drug Screening Of Three-Dimensional Glioblastoma Microtumors As A Potential Comparative Model To Orthotopic Xenolines, Ashley Nichole Gilbert Jan 2015

Kinomic Profiling And Drug Screening Of Three-Dimensional Glioblastoma Microtumors As A Potential Comparative Model To Orthotopic Xenolines, Ashley Nichole Gilbert

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Glioblastoma multiforme (GBM), the most common form of primary malignant brain cancer in adults, is a devastating disease for which effective treatment has remained elusive for over 75 years. A likely reason for the minimal progress during this time is the lack of accurate preclinical models to represent the patient in vivo environment, causing a disconnect in drug therapy effectiveness between the laboratory and clinic. Our proposed solution to address this disconnect and the issues of traditional preclinical modeling is to use innovative HuBiogel-based MicroTumors as a three-dimensional (3D) drug screening model for GBM. Six subcutaneous patient-derived xenografts (PDXs) prepared …

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Consequences Of Trps1 Deficiency On Dentinogenesis, Morgan Goss Jan 2015

Consequences Of Trps1 Deficiency On Dentinogenesis, Morgan Goss

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Dentinogenesis is a complex process of dentin formation. It involves differentiation of odontoblasts, the cells that make dentin, and the formation of a unique extracellular matrix, known as dentin. Dentin is ultimately produced through the interaction of collagen fibers, non-collagenous proteins and hydroxyapatite (HA) crystals. Odontoblasts are cranial neural crest (CNC) ectomesenchymal derived cells. Trps1 is a novel transcription factor believed to play an important role in both tooth formation and the mineralization process. TRPS1 gene mutations are known to result in dental and skeletal abnormalities manifested in humans as tricho-rhino-phalangeal syndrome (TRPS) and Ambras syndrome. Trps1 expression varies throughout …

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Lab-On-A-Brane: A Novel Physiologically Relevant Planar Arterial Model To Study Transendothelial Transport, Karim I. Budhwani Jan 2015

Lab-On-A-Brane: A Novel Physiologically Relevant Planar Arterial Model To Study Transendothelial Transport, Karim I. Budhwani

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The tremendous quality of life impact notwithstanding, cardiovascular diseases and Cancer add up to over US$ 700bn each year in financial costs alone. Aging and population growth are expected to further expand the problem space while drug research and development remain expensive. However, preclinical costs can be substantially mitigated by substituting animal models with in vitro devices that accurately model human cardiovascular transport. Here we present a novel physiologically relevant lab-on-a-brane that simulates in vivo pressure, flow, strain, and shear waveforms associated with normal and pathological conditions in large and small blood vessels for studying molecular transport across the endothelial …

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Exploring The Relationship Between Study Abroad And Emotional Intelligence, Michael Joshua Carter Jan 2015

Exploring The Relationship Between Study Abroad And Emotional Intelligence, Michael Joshua Carter

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EXPLORING THE RELATIONSHIP BETWEEN STUDY ABROAD AND EMOTIONAL INTELLIGENCE MICHAEL JOSHUA CARTER EDUCATIONAL LEADERSHIP ABSTRACT Given the increased interest in the academic and behavioral impact of university study abroad programs, the possible relationship between study abroad and emotional intelligence was evaluated. A paper-based survey packet consisting of a researcher-developed demographic questionnaire and the Bar-On EQ-i: 2.0 Emotional Intelligence Quotient Inventory (EQi) was administered to a convenience sample of 144 undergraduate students, ages 19-25, at the University of Alabama at Birmingham. The total sample consisted of two groups: (1) a sample group of undergraduate students who participated in the university study …

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The Adaptive Significance Of Phenotypic Plasticity In The Wild: An Experimental Test Using The Brown Anole Lizard (Anolis Sagrei), Corey Dale Cates Jan 2015

The Adaptive Significance Of Phenotypic Plasticity In The Wild: An Experimental Test Using The Brown Anole Lizard (Anolis Sagrei), Corey Dale Cates

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The conditions that embryos experience during development have substantial effects on offspring phenotypes and fitness. Although plastic responses to developmental environments are widespread, whether they are adaptive is unknown in most cases. Developmental plasticity is often thought to be adaptive in heterogeneous environments, but it can also enhance fitness when environments experienced by embryos provide cues for the conditions they will eventually experience later in life. Under the latter scenario, early embryonic conditions could program an individual’s physiology to appropriately deal with predictable future conditions. This hypothesis has received support in the ecological and medical literature on diverse organisms. However, …

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Intra-Oral Scanning Devices Compared To Traditional Digital Impressions, Terpsithea Christou Jan 2015

Intra-Oral Scanning Devices Compared To Traditional Digital Impressions, Terpsithea Christou

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The aim of this study is to review the state of art concerning 3D optical acquisition techniques and devices currently used in Orthodontics, and determine whether a commercial intra-oral scanner is as accurate as traditional impressions for orthodontic purposes. Materials and Methods: Records of 30 subjects were prospectively acquired and digital models were obtained using an intra-oral scanner, LythosTM by Ormco, and an extra-oral scanner, GOM ATOS Triple Scan II by GOM. Seven parameters indicating linear measurements from predetermined landmarks were measured and analyzed. Paired t tests, plots and bars and Bland and Altman Analysis were used to compare and …

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The Utilization Of Blue - Green Algae Lyngbya Recovered From Local Ponds As Natural Reinforcement Of Composite Materials, Ninfa Alejandra Constante Perez Jan 2015

The Utilization Of Blue - Green Algae Lyngbya Recovered From Local Ponds As Natural Reinforcement Of Composite Materials, Ninfa Alejandra Constante Perez

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The abundance of blue - green algae (BGAs) has created a social and industrial problem. The overgrowth of algae blooms in water bodies across the U.S. reduces the quality of water for ecological and recreational purposes. The production of algae biofuels is forecasted to exponentially grow in the coming years, but waste residual algal biomass represents a challenge to biofuel producers. This work explores possible avenues for the utilization of BGAs as an effective reinforcement of natural fiber composites. Natural fiber composites (NFCs) are of great importance for the automotive industry in applications such as interior door panels, headliners, and …

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Mechanisms Of Npy-Induced Phase Shifts And Gsk3 Modulation Of Rhythmic Molecular Clock Gene Expression, Neurophysiological Function, And Memory., Rachel Besing Jan 2015

Mechanisms Of Npy-Induced Phase Shifts And Gsk3 Modulation Of Rhythmic Molecular Clock Gene Expression, Neurophysiological Function, And Memory., Rachel Besing

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The current set of studies addresses three main hypotheses. We first tested the hypothesis that NPY-induced phase advances are accompanied by persistent suppression of core circadian clock gene PER2 and are mediated by long-term depression of neuronal excitability in a phase-specific manner. We found that NPY induced phase advances in PER2::LUC cultures, as well as decreased neuronal firing in SCN slices, are largest when NPY is given in the early part of the day and PER2::LUC phase advances were blocked by depolarization with potassium chloride, suggesting that NPY-induced phase advances are mediated by long-term depression of neuronal excitability. The second …

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Synthesis And Characterization Of A Collagen Based Biodegradable Polymer Initiated By Hydroxyapatite Nanoparticle For Bone Regeneration, Didarul B. Bhuiyan Jan 2015

Synthesis And Characterization Of A Collagen Based Biodegradable Polymer Initiated By Hydroxyapatite Nanoparticle For Bone Regeneration, Didarul B. Bhuiyan

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Synthetic bone graft biomaterials are considered as a potential alternative to the conventional use of bone grafts, due to their limitless supply and lack of disease transmission. Current synthetic bone graft materials generally lack the necessary combination of biological and mechanical properties for use as a bone graft substitute. Bone is a dynamic tissue that serves biological, chemical and mechanical purpose in the body and it is unlikely that a single component synthetic biomaterial can provide the appropriate combination of mechanical integrity and biological stimulation to replace bone. Multicomponent biomaterials need chemical bonding between the components to prevent phase separation …

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Exploring First-Semester Medical Student Academic Self-Efficacy: A Mixed Methods Investigation, Deborah J. Blackstone Jan 2015

Exploring First-Semester Medical Student Academic Self-Efficacy: A Mixed Methods Investigation, Deborah J. Blackstone

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Academic self-efficacy has been empirically demonstrated to be related to academic performance over a wide range of grade levels and academic settings, but little research exists examining this relationship in medical school. This study sought to fill this gap by investigating academic self-efficacy in first-semester medical students using a sequential mixed methods approach. In the first, quantitative strand, 81 first-semester medical students completed an academic self-efficacy survey during the first science-based course and again at the end of the semester. Academic self-efficacy for out of class academic tasks decreased over the semester; academic self-efficacy for in class academic tasks was …

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The Effects Of Inter-Age Class Competition On Habitat Use In A Territorial Lizard, David Michael Delaney Jan 2015

The Effects Of Inter-Age Class Competition On Habitat Use In A Territorial Lizard, David Michael Delaney

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All organisms have specific habitat requirements that allow them to properly function in the environment. However, optimal habitats often differ across age classes, and accordingly, juveniles shift habitat choice as they age. Field observations of the brown anole lizard (Anolis sagrei) suggest that juveniles perch in open-canopy areas on low vegetation whereas adults reside in forest edges on higher vegetation. I hypothesized that this age-specific habitat variation is because adults force juveniles to less preferred habitat. To address these issues, I conducted a series of experiments to examine the role of inter-age class competition in driving variation in perch use …

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Hiv-1 Adaptation To T-Cell Responses During Infection, Victor Yimin Du Jan 2015

Hiv-1 Adaptation To T-Cell Responses During Infection, Victor Yimin Du

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recommended vitamin D intake, and perceived barriers to adequate calcium intake

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The Adhd Medication Process Model: A Qualitative Investigation Of Teaching Pedagogies, Ideal Student Behavior, Labeling Processes, And Attitudes Towards Adhd Medication., Zachary Robert Simoni Jan 2015

The Adhd Medication Process Model: A Qualitative Investigation Of Teaching Pedagogies, Ideal Student Behavior, Labeling Processes, And Attitudes Towards Adhd Medication., Zachary Robert Simoni

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The number of children diagnosed with and medicated for ADHD has increased within the last decades. In this study, I assert that ADHD is a serious mental health issue with a biological etiology which in many cases is alleviated by the use of medication. However, I also argue that powerful socio-cultural forces are important to understanding ADHD and medication use in the American Educational system. Physicians and psychiatrists are responsible for assigning medication as a treatment for ADHD. Nevertheless, teachers are at the front lines of the ADHD issue and handle it on a daily basis. Despite this fact, very …

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The Influence Of Personal, Interpersonal, And Community Factors On The Parenting Self-Efficacy Of First-Time Mothers, Tamika L. Smith Jan 2015

The Influence Of Personal, Interpersonal, And Community Factors On The Parenting Self-Efficacy Of First-Time Mothers, Tamika L. Smith

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The Social Ecological Model (SEM) allows for examining human behavior and the factors that influence behavior change in totality. In addition, the model offers guidance in identifying the factors that may lead to a change in or explanation of behavior. This study utilizes SEM to identify factors at the personal, interpersonal, and community level in order to determine the relationship between specific ecological factors and parenting self-efficacy. Furthermore, the study examines the predictive quality of the ecological factors on parenting self-efficacy. Data collected from the Parenting for the First-time Project (PFT) was used. PFT is a multi-site longitudinal study of …

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Exploiting The Glioblastoma Tumor Microenvironment For Enhanced Oncolytic Herpes Simplex Virus Therapy, Tyrel Talbert Smith Jan 2015

Exploiting The Glioblastoma Tumor Microenvironment For Enhanced Oncolytic Herpes Simplex Virus Therapy, Tyrel Talbert Smith

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Gliomas are the most common and fatal malignancy of the adult central nervous system. The need for new therapeutic options is clear, as standard of care therapies only extend median survival 12-14 months beyond diagnosis. Conditionally replication-competent oncolytic herpes simplex type-1 viruses (oHSV) have emerged as promising therapeutics for treating malignant gliomas. However, two factors that contribute to the dismal prognosis of malignant gliomas, immunosuppression and invasive growth, are also thought to limit virotherapeutic efficacy. We examined these factors in tumor microenvironments to explore novel strategies to treat malignant gliomas with oHSV for improved therapeutic response. In a Phase 1b …

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The Role Of Ribosome Biogenesis In Exercise-Induced Skeletal Muscle Anabolism In Aging, Michael Stec Jan 2015

The Role Of Ribosome Biogenesis In Exercise-Induced Skeletal Muscle Anabolism In Aging, Michael Stec

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Numerous chronic medical conditions, as well as normal aging result in a significant loss of skeletal muscle mass. This has profound effects on quality of life and can increase the risk of all-cause mortality. Currently, the most potent treatment for reversing the loss of muscle mass is resistance exercise training (RT); however, the human muscle fiber growth (hypertrophy) response to this treatment is quite variable, and older adults do not respond as favorably to this treatment as younger adults. The focus of this dissertation is to elucidate the role that ribosome biogenesis plays in regulating the RT-induced hypertrophic response. We …

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The Role Of Mammalian Tribbles Homolog 3 (Trb3) In Macrophage Biology; Evidence For Reciprocal Regulation Of Macrophage Function In Foam Cell Formation, Dennis Steverson Jan 2015

The Role Of Mammalian Tribbles Homolog 3 (Trb3) In Macrophage Biology; Evidence For Reciprocal Regulation Of Macrophage Function In Foam Cell Formation, Dennis Steverson

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Atherosclerosis is disease characterized by dysregulated lipid metabolism and chronic inflammation. Macrophages are critical to the progression of the disease and are involved in the pathophysiology at all stages of the disease. In the early stages, macrophages are responsible for fatty streak formation by becoming foam cells through lipid uptake. In the later stages, macrophages contribute to the degradation of the fibrous cap and are largely responsible for chronic inflammation in atherosclerotic plaques. Tribbles homolog 3 (TRB3) is a pseudokinase that inhibits Akt activation by blocking its phosphorylation site. TRB3 is expressed on numerous cell types in the body (pancreatic …

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Deleterious Effects Of Hyperglycemia On Cognitive Functioning In The Cardia Study Cohort, Michele Holland Talley Jan 2015

Deleterious Effects Of Hyperglycemia On Cognitive Functioning In The Cardia Study Cohort, Michele Holland Talley

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DELETERIOUS EFFECTS OF HYPERGLYCEMIA ON COGNITIVE FUNCTIONING IN THE CARDIA STUDY COHORT MICHELE LYN HOLLAND TALLEY SCHOOL OF NURSING ABSTRACT With an aging society, maintaining cognitive functioning into older age is becoming more important. Because of the impact cognitive functioning has on daily activities, any disruption may inhibit the ability to perform such daily activities successfully. To prevent disruptions, determinants of cognitive functioning must be considered. Such determinants may or may not be modifiable. Some predictors may be demographic, metabolic, or inflammatory in nature. In addition, predictors or determinants may differ based on genetic predisposition to Alzheimer’s disease. As part …

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Characterization Of The Gtpase Rac1 As An Electrophilic-Sensitive Protein In Vascular Cells, Stephanie Brook Wall Jan 2015

Characterization Of The Gtpase Rac1 As An Electrophilic-Sensitive Protein In Vascular Cells, Stephanie Brook Wall

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The GTPase Rac1 is a protein which has been shown to be dysregulated in the context of a number of inflammatory diseases including atherosclerosis. Rac1 responds to extracellular signals and is involved in cellular cytoskeletal rearrangement, reactive oxygen species generation and cell cycle progression. When activated Rac1 interacts with effector proteins on the plasma membrane. This activation has recently been shown to be modulated by redox signaling via an active site cysteine. However, it is not known whether other redox signaling compounds can modulate Rac1 activity. An important redox signaling mediator is the electrophilic lipid, 15-deoxy-Δ12,14-prostaglandin J2 (15dPGJ2). This lipid …

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Mechanisms Of Heme Oxygenase-1-Mediated Protection Against Tissue Injury, Travis David Hull Jan 2015

Mechanisms Of Heme Oxygenase-1-Mediated Protection Against Tissue Injury, Travis David Hull

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Heme oxygenase-1 (HO-1) catalyzes the rate-limiting step in the catabolism of heme, which is released by necrotic cells in injured tissue. HO-1 expression is protective in cardiac and renal injury because it coordinates the degradation of pro-oxidant heme with the generation of equimolar quantities of iron (Fe2+) and the cytoprotective mole-cules carbon monoxide and biliverdin. While many studies have demonstrated that HO-1 expression is protective in numerous disease states, relatively few have examined the specific cellular compartment(s) through which HO-1 expression confers its protective effects. Our objective was to define the cellular compartments in which HO-1 expression is critical to …

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