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Theses/Dissertations

2014

All ETDs from UAB

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Osteomimmunology Of Bone Fracture Healing And Cell And Gene Therapy Approaches For Nonunion Bone Defects, Seth G. Levy Jan 2014

Osteomimmunology Of Bone Fracture Healing And Cell And Gene Therapy Approaches For Nonunion Bone Defects, Seth G. Levy

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Despite the body's ability to repair bone fractures under normal circumstances, up to 10% of the 7.9 million fractures suffered in the United States each year do not achieve bony union. Bone fractures heal with overlapping phases of inflammation, cell proliferation, and bone remodeling. Osteogenesis and angiogenesis are known to work in concert to control many stages of this process, but when one is impaired it leads to failure of bone healing, referred to as a nonunion. Such nonunion fractures often result from critical-size defects that will not completely heal over the natural lifetime of the animal. Based on this …

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Imaging Biomarkers For Prediction Of Treatment Response In Schizophrenia, Jennifer Ann Hadley Jan 2014

Imaging Biomarkers For Prediction Of Treatment Response In Schizophrenia, Jennifer Ann Hadley

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Schizophrenia affects approximately 1% of the population and is one of the top five causes of disability worldwide. Patient response to any particular drug is variable and currently unpredictable. Our overall goal is to identify imaging biomarkers that will distinguish patients with schizophrenia who will respond to an antipsychotic drug from those who will not. When considering potential biomarkers, it is important to note that schizophrenia is known to involve altered neuronal connections, thought to reflect pathologically relevant changes associated with the disease. We propose to utilize functional connectivity as a biomarker for treatment response to antipsychotic drugs in schizophrenia. …

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An Examination Of The Services That Contribute To Positive Vocational Outcomes In Adults With Developmental Disabilities, Abbey N. Harris Jan 2014

An Examination Of The Services That Contribute To Positive Vocational Outcomes In Adults With Developmental Disabilities, Abbey N. Harris

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One of the most pressing issues concerning persons with developmental disabilities is making sure their needs are met once they reach adulthood. As adults, they should have the abilities and skills to be as independent as possible and to be contributing members of society. Without the proper services and help, though, this may not be possible for a large portion of this population. Research suggests that supportive employment services alone may not be enough to meet their unique vocational needs and to improve the likelihood of their achieving personal and financial independence. The purpose of this study was to determine …

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Gene Expression Signatures In Tree Shrew Retina, Rpe, And Choroid During Experimental Myopia And Recovery, Li He Jan 2014

Gene Expression Signatures In Tree Shrew Retina, Rpe, And Choroid During Experimental Myopia And Recovery, Li He

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During the development of induced myopia and recovery, the emmetropization mechanism is stimulated to modulate ocular growth. Emmetropization signals originate in the retina, are transmitted and transformed by retinal pigment epithelium (RPE) and choroid, and reach sclera to induce tissue remodeling. Induced myopia occurs in response to myopiagenic stimuli - minus lens, form deprivation, and darkness - (three GO conditions) which increase ocular elongation; recovery from lens-induced myopia (STOP) occurs when minus-lens wear is discontinued after complete compensation, slowing ocular elongation. This dissertation examined gene expression signatures in the retina, RPE, and choroid under GO and STOP conditions to examine …

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Southern African American Women's Perception Of Cononary Artery Disease After A Myocardial Infarction: A Phenomenological Inquiry, Loretta Jones Jan 2014

Southern African American Women's Perception Of Cononary Artery Disease After A Myocardial Infarction: A Phenomenological Inquiry, Loretta Jones

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The American Heart Association (AHA) reported that cardiovascular diseases kill nearly 50,000 African-American (AA) women annually. Of AA women ages 20 and older, 49% have heart diseases. Only 52% of AA women are aware of the signs and symptoms of a heart attack and only 36% of AA women know that heart disease is their greatest health risk. The purpose of this phenomenological study was to explore the lived experience of African American women, 50 years and older, who had experienced a myocardial infarction within the past five years. The primary research questions addressed the women's knowledge of risk factors, …

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The Roles Of Mammalian Tribbles Homolog 3 (Trib3) In Coordinating Energy Metabolism And Development Of Insulin Resistance, Wei Zhang Jan 2014

The Roles Of Mammalian Tribbles Homolog 3 (Trib3) In Coordinating Energy Metabolism And Development Of Insulin Resistance, Wei Zhang

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Insulin resistance in diabetics comprises of a reversible component treatable with intensive glycemic control and a non-reversible component present in pre-diabetes that may lead to the development of overt diabetes. The reversible component is induced and exacerbated by hyperglycemia in both uncontrolled type 1 and type 2 diabetes, a process known as glucose-induced insulin resistance (GIIR) or glucose toxicity. The tribbles homolog 3 (TRIB3) has been identified as a pseudokinase that inhibits Akt activity by physically blocking its phosphorylation site. Expression of TRIB3 has been associated with various signals such as endoplasmic reticulum (ER) stress and nutrient availability in pancreatic …

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Calreticulin Regulates Tgf-Ss Stimulated Extracellular Matrix Production, Kurt Zimmerman Jan 2014

Calreticulin Regulates Tgf-Ss Stimulated Extracellular Matrix Production, Kurt Zimmerman

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Calreticulin (CRT) is an ER chaperone and regulator of Ca2+ signaling which is increased following ER stress and in fibrotic and vascular fibroproliferative disorders. Previously, we demonstrated that ER CRT regulates type I collagen transcript, trafficking, secretion, and processing into the extracellular matrix (ECM). These studies investigated the role of CRT in regulating ECM production through control TGF-ß dependent signaling pathways. Our studies show that CRT -/- mouse embryonic fibroblasts (MEFs), rat lung fibroblasts, and human IPF lung fibroblasts with siRNA knockdown of CRT had impaired production of type I collagen and fibronectin when stimulated with TGF-ß. Similarly, knockdown of …

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Gene Expression Signatures In Tree Shrew Sclera In Different Visual Conditions, Lin Guo Jan 2014

Gene Expression Signatures In Tree Shrew Sclera In Different Visual Conditions, Lin Guo

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The sclera is a target tissue that receives signals that are initiated in the retina, cascade through retinal pigment epithelium (RPE) and choroid, and cause scleral extra cellular matrix remodeling. Biomechanical alterations of the sclera are produced by these biochemical changes, and in turn control the axial length of the eye. This dissertation project examined scleral gene expression changes in mRNA level of juvenile tree shrews. Three specific aims were investigated: specific aim one tested the hypothesis that three different GO visual conditions that all produce axial elongation and myopia: minus-lens wear, form deprivation, and continuous darkness, will produce similar …

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Patient And System Level Factors As Predictors Of Adherence To Antiretroviral Therapy Appointment Schedules In Cambodia, Gary T. Daigle Jan 2014

Patient And System Level Factors As Predictors Of Adherence To Antiretroviral Therapy Appointment Schedules In Cambodia, Gary T. Daigle

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PATIENT AND SYSTEM LEVEL FACTORS AS PREDICTORS OF ADHERENCE TO ANTIRETROVIRAL THERAPY APPOINTMENT SCHEDULES IN CAMBODIA GARY T. DAIGLE EPIDEMIOLOGY / INTERNATIONAL HEALTH ABSTRACT On-time attendance at clinical appointments by patients on antiretroviral therapy (ART) is essential to the prevention of medication interruptions, viral rebound, drug resistance, and long term mortality. An observational study conducted in 2010, Enablers and Adherence to Antiretroviral Therapy in Cambodia, sought to identify factors that predict on-time clinical appointment attendance by patients on ART. These factors were classified as either ART patient level factors (e.g. demographic, clinical) or patient care and support system level factors …

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Development Of A Patient-Derived Xenograft Model Of Ovarian Cancer To Characterize The Chemotherapy Resistant Population, Zachary Christopher Dobbin Jan 2014

Development Of A Patient-Derived Xenograft Model Of Ovarian Cancer To Characterize The Chemotherapy Resistant Population, Zachary Christopher Dobbin

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Ovarian cancer while the second most common gynecologic malignancy is the most commons cause of death due to a gynecologic malignancy and the fifth most common cause of death to cancer in women. In 2014, there will be an expected 21,980 cases and 14,270 deaths. Unfortunately, the five-year survival for ovarian cancer is only 40% and this has barely increased over the past 30 years. New approaches need to be developed in order to study ovarian cancer and identify methods of overcoming chemotherapy resistance. This dissertation presents the work conducted in the development of a patient-derived xenograft model of ovarian …

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Type I Interferons-Induced Follicular Translocation Of Lymphotoxin-Expressing Marginal Zone B Cells Initiates Lupus, Hao Li Jan 2014

Type I Interferons-Induced Follicular Translocation Of Lymphotoxin-Expressing Marginal Zone B Cells Initiates Lupus, Hao Li

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Systemic lupus erythematosus (SLE) is characterized by elevation of type I interferon (IFN) signature genes and production of autoantibodies against apoptotic self-antigens. The complex nature of SLE, however, suggests that multiple immune dysregulations must integrate to initiate the disease. Here, we provided evidence that lupus can be initiated via type I IFNs-induced follicular translocation of membrane lymphotoxin (mLT)-expressing marginal zone (MZ) B cells in the spleen of lupus prone BXD2 mice. The mislocation of mLT+ MZ B cells induces two important pathogenic effects including deteriorations of marginal zone macrophages (MZMs) in the MZ, leading to defective clearance of apoptotic debris, …

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Cutting Effectiveness Of Diamond Burs On Dental Zirconia., Ching-Kai Lin Jan 2014

Cutting Effectiveness Of Diamond Burs On Dental Zirconia., Ching-Kai Lin

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Monolithic zirconia restorations are popular but removing these crowns is difficult. The purpose of the study is to measure and compare the cutting effectiveness of 10 types of diamond burs through monolithic sintered zirconia. Ten types of diamond burs (n=8) were compared for the cutting effectiveness in Zirconia (CERCON; DeguDent) using a high speed computer controlled cutting device with water spray (5.45L/min). The turbine used to cut the blocks rotated at 150,000 rpm and with the burs at a depth of 2mm into the zirconia during cutting. A 100 gm load was applied during cutting for each bur which made …

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Expression Of The Influenza Protein M2 During Viral Infection Inhibits Cftr Activity, James David Londino Jan 2014

Expression Of The Influenza Protein M2 During Viral Infection Inhibits Cftr Activity, James David Londino

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The purpose of these dissertation studies was to 1) determine whether influenza infection alters CFTR activity in polarized epithelium; 2) measure CFTR expression and activity in cells co-expressing influenza M2 protein; and 3) examine the role of M2 on the alteration of CFTR during viral infection. We determined that infection of polarized primary epithelial cells with influenza decreases CFTR expression and activity. In addition, individual cells infected with influenza had decreased CFTR conductance as measured by whole-cell patch clamp. We also found that the influenza ion channel, matrix protein 2 (M2), alone reduced CFTR expression and activity. M2 is expressed …

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A Sinner In The City: Contextualizing The Magdalen Master Vita Panel C. 1280, Kristen Nicole Latulipe Jan 2014

A Sinner In The City: Contextualizing The Magdalen Master Vita Panel C. 1280, Kristen Nicole Latulipe

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This thesis shows that the vita panel of Mary Magdalen, now exhibited in the Galleria dell'Accademia in Florence, was originally commissioned for a convertite house, rather than a mendicant monastery, as had been hitherto suggested. Painted c. 1280 by the Florentine painter known as the Magdalen Master, the work features a hair-clad Magdalen flanked by eight scenes from her life and legend. There is no extant documentation regarding the panel's commission. This thesis offers the Florentine convertite house of Santa Maria Maddalena as the likeliest original location for the Accademia Magdalen. Founded c. 1257, this institution was among the first …

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3-Dimensional Comparison Of Hard And Soft Tissue Asymmetry In, Philip H. Pan Jan 2014

3-Dimensional Comparison Of Hard And Soft Tissue Asymmetry In, Philip H. Pan

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Class III malocclusions are particularly prevalent in the Asian population. Threedimensional imaging has improved the ability to portray the three-dimensional characteristics of soft tissue face and underlying skeletal hard tissue. While soft tissue reflects the underlying hard tissue structures, soft tissue may either provide a compensation for hard tissue asymmetry or potentially exacerbate the asymmetry. The current study is novel in that the hard tissue and soft tissue asymmetries are both analyzed relative to the same reference point, and using 3D imaging, we have attempted to elucidate a compensation tendency between the hard and soft tissues. The sample was comprised …

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American Options And Semilinear Parabolic Partial Differential Equations In Weighted Sobolev Spaces., Terrence K. Muthoka Jan 2014

American Options And Semilinear Parabolic Partial Differential Equations In Weighted Sobolev Spaces., Terrence K. Muthoka

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To value an American option as a function of time t and price of the underlying asset S is currently a major research problem in both Financial Markets and for academic purposes. Options and more general financial derivatives (also known as contingent claims) are now an important tool in risk management. One of the earliest models used in pricing derivatives is the Black-Scholes model, for which the movement in the price of the underlying asset on which the claim is based is modeled by geometric Brownian motion. Other models used for theoretical and numerical analysis of American options include the …

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Cd5 Regulation Of T Helper Cell Differentiation And Cytokine Signaling, Donald Mcguire Jan 2014

Cd5 Regulation Of T Helper Cell Differentiation And Cytokine Signaling, Donald Mcguire

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CD5 is expressed on T and B1a cells and is an important regulator of cell survival and activation. Engagement of CD5 promotes cell survival through the activation of the serine threonine kinase CK2. Mice with genetic abrogation of CD5 binding to CK2 (CD5∆CK2bd) exhibited reduced severity of experimental autoimmune encephalomyelitis that was associated with increased activation induced cell death. In addition to inhibiting cell death, CD5 activation of CK2 significantly enhances Th17 differentiation. Loss of CD5-CK2 signaling reduces the generation of Th17 cells despite an unexpected increase in pSTAT3 levels. The mechanisms of CD5's enhancement of Th17 differentiation have not …

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The Role Of Primary Cilia In Mammary Gland And Skeletal Development, Elizabeth Mitchell Jan 2014

The Role Of Primary Cilia In Mammary Gland And Skeletal Development, Elizabeth Mitchell

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Primary cilia (PC) extend from the cell body into the microenvironment detecting chemical and mechanical signals, and are required for proper development. To evaluate loss of primary cilia in mammary gland development, we developed mouse models with deletion of PC in mammary epithelial compartments. No discernable alterations to mammary development were observed in MMTV-Cre- or K14-Cre; Ift88Del lines. PC were expressed at high levels on cells in mammosphere culture; however, PC were not required for mammosphere renewal. The inability to find a significant mammary developmental phenotype in our mouse models suggested primary cilia don't have a significant function in differentiated …

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Parent And Child Factors In Relation To Mealtime Problem Behavior Of Children With And Without Autism Spectrum Disorder, Eva Trinh Jan 2014

Parent And Child Factors In Relation To Mealtime Problem Behavior Of Children With And Without Autism Spectrum Disorder, Eva Trinh

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Many parents of children and adolescents with autism spectrum disorders (ASD) describe their child as a picky eater (Rogers et al., 2012; Suarez et al., 2014). Compared to typically developing children, children with a diagnosis of ASD are reported to experience more sensory sensitivity to the taste, smell, or texture of food (Baranek et al., 2006; Lane, Molloy, & Bishop, 2014; Nadon et al., 2011; Schoen et al., 2009), present with anxious behaviors that may relate to food (Farrow & Coulthard, 2012; Williams et al., 2001), and have a variety of mealtime problem behaviors (Bandini et al., 2010; Dominick et …

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Post-Release Job Training And Enhanced Access To Employment Opportunities For Released Offenders: Incentives To Reducing Recidivism, Emmanuel Etim Umoh Jan 2014

Post-Release Job Training And Enhanced Access To Employment Opportunities For Released Offenders: Incentives To Reducing Recidivism, Emmanuel Etim Umoh

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Researchers studying the effect of employment on recidivism have shown that offenders who are employed after serving time in prison are less likely to recidivate (Kyvsgaard, 1990). These scholars also indicated that employment for released offenders is positively related to a delay in re-offending. Such findings support the belief that job security increases the interval between release from prison and re-offending. In this study I expand on existing recidivism studies to investigate how post-release job training and greater access to employment opportunities for ex-prisoners affects recidivism. The effect of educational status is also measured to determine whether a high school …

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Translocation Of Shed Syndecan-1 To The Nucleus: A Novel Mechanism Of Tumor-Host Crosstalk, Mark Stewart Jan 2014

Translocation Of Shed Syndecan-1 To The Nucleus: A Novel Mechanism Of Tumor-Host Crosstalk, Mark Stewart

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Multiple myeloma is a hematological malignancy of plasma cells that disseminates throughout the body. Crosstalk between myeloma and host cells is critical to the establishment of a microenvironment conducive to tumor growth and progression. An important mediator of this crosstalk is syndecan-1, a heparan sulfate proteoglycan. Syndecan-1 is proteolytically shed from the surface of myeloma cells and is abundant in the bone marrow microenvironment and serum of myeloma patients. Shed syndecan-1 facilitates tumor-host crosstalk within the microenvironment to drive tumor growth, angiogenesis, and metastasis. We now report for the first time that shed syndecan-1 can be taken up by a …

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Skeletal Muscle Stem Cell Function Following Burn Injury, Katie Leigh Wilson Jan 2014

Skeletal Muscle Stem Cell Function Following Burn Injury, Katie Leigh Wilson

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The pathophysiological response to burn injuries involves severe inflammation and a hypermetabolic state, both contributing to prolonged muscle atrophy. However, the relationship between inflammation and hypermetabolism following burn injury is poorly defined. Catabolism results from energy storage depletion, in part due to futile substrate cycling, and preferentially involving amino acids. This rapid turnover of amino acids leads to massive, full body muscle wasting. The extent and duration of muscle loss is directly related to the total body surface area burned (TBSA). Severely burned patients may experience metabolic derangements and impaired muscle synthesis for up to two years. In order to …

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Il-8 Is Necessary And Sufficient For X-Ray Radiation Enhanced Endothelial Adhesion., Stephen Kyle Babitz Jan 2014

Il-8 Is Necessary And Sufficient For X-Ray Radiation Enhanced Endothelial Adhesion., Stephen Kyle Babitz

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Ionizing radiation (IR) is a potent inflammatory stimulus to the human body. In the vasculature, inflammation is a major contributing factor for atherosclerosis. In addition, radiation from several sources has been linked with increased risk for multiple cardiovascular complications. A key compnent of radiation associated inflammation is an increase in the adhesiveness of the endothelium which leads to a pathogenic accumulation of leukocytes in the vascular wall. This is one of the initial steps in vascular inflammation and leads to a number of adverse complications such as heart disease and stroke. The molecular mechanisms behind radiaton enhanced endothelial adhesion have …

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Cd5-Dependent Ck2 Activation Is Critical For The Maintenance Of B-1a B Cells, Kevin S. Cashman Jan 2014

Cd5-Dependent Ck2 Activation Is Critical For The Maintenance Of B-1a B Cells, Kevin S. Cashman

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CD5 has classically been shown to act as a negative regulator of antigen receptor signaling, however recent evidence has discerned that the CD5 molecule contains a previously undefined cytoplasmic domain which constitutively binds inactive CK2 and facilitates its activation through CD5 ligation. With the development of a mouse model which contains a micro-deletion knock-in form of CD5 which lacks the amino acids necessary to facilitate this CD5-CK2 interaction, it is now understood that CD5 plays a more significant role in cellular physiology than previously appreciated. T cells from this mouse model show increased AICD and dysregulation in T helper subset …

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Effects Of Early Life Exposure To Methylmercury On Predator Response In Daphnia Pulex, Megan Lisa Steed Jan 2014

Effects Of Early Life Exposure To Methylmercury On Predator Response In Daphnia Pulex, Megan Lisa Steed

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Knowledge of the health effects of toxic chemicals is largely based on single chemical models rather than a multi-factor model, which more accurately captures realworld exposures. This study investigated how methylmercury affects Daphnia pulex in the presence of predatory stress chemical. A kairomone is an infochemical released by an animal that can be detected by another animal. Daphnia pulex detects kairomone released by Danio rerio resulting in the induction of morphological and life history changes. Danio rerio were kept in COMBO media for 24 hours at a density of 2 fish per liter. Daphnids were then housed in kairomone-containing COMBO …

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Fatigue Testing Of Straight And Angled Abutments In A High Torque Dental Implant System, Rana M. Atieh Jan 2014

Fatigue Testing Of Straight And Angled Abutments In A High Torque Dental Implant System, Rana M. Atieh

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Root form dental implants are a common solution used today to replace missing teeth. However current designs still suffer from a number of limitations. Angled abutments are used for incisors, where maximum human bite forces are normally < 200N, while straight abutments are used for molars subjected to higher forces > 200 N. The aim of this study was to evaluate the mechanical performance of a novel dental implant system by fatigue testing straight and 15-degree angled abutments. It was hypothesized that the novel thread design will dissipate the load evenly throughout the implant allowing the system to withstand normal chewing forces. Implants with 4.2mm diameter were tested according to ISO 14801 in specimen …

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Bridge Rail Design Procedure, Emad Badiee Jan 2014

Bridge Rail Design Procedure, Emad Badiee

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The AASHTO Bridge Specifications recommend a yield line theory analysis to determine the structural capacity of concrete bridge railing based on static strength of concrete. However, this analysis technique has been shown to significantly underestimate the capacity of concrete bridge rails to withstand high speed truck impacts. Traditionally this shortcoming has been mitigated by artificial reductions in bridge rail design loads implemented into the design specifications. Fear of litigation associated with failure of a bridge rail to contain and redirect an errant vehicle has made continuing this policy unacceptable for most state highway agencies. On the other hand, existing barrier …

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Ap2 Clock Mutant Mice: Baseline Characteristics And Novel Responses To A Lipopolysaccharide Challenge, Tana Birky Jan 2014

Ap2 Clock Mutant Mice: Baseline Characteristics And Novel Responses To A Lipopolysaccharide Challenge, Tana Birky

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Circadian rhythms are the daily biological changes present within most organisms that occur in a predictable, approximately 24 hour pattern, even in the absence of external stimuli. These rhythms occur both at a global and cellular level, and although the molecular mechanics are highly conserved, their functions may vary depending on the tissues in which they are expressed. These functions include various aspects of metabolic processes such as satiety signaling and cellular proliferation. In order to explore the specific functions of circadian rhythms within adipocytes, a mouse model with Clock disruption driven by the fatty acid-binding protein 2 (aP2) promoter …

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Examining Neuropsychological Sequelae Of Chronic Pain And The Effect Of Immediate-Release Opioid Analgesics, Cady Block Jan 2014

Examining Neuropsychological Sequelae Of Chronic Pain And The Effect Of Immediate-Release Opioid Analgesics, Cady Block

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Introduction: Patients commonly complain of subjective side effects of opioid use, including forgetfulness, slowed processing speed, confusion, and sedation - which have raised concerns about potential cognitive impairment. However, research on the effects of opioids on objective neuropsychological performance is thus far equivocal and, unfortunately, many of the studies cited as support for opioid-related impairment do not fully account for the neuropsychological effects of chronic pain, which has been shown to affect many of the same neuropsychological domains purported to be affected by opioids. To that end, we sought to examine whether: 1) chronic nociceptive pain itself results in objective …

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The Involvement Of The Ca2+-Independent Phospholipase A2ss In The Pathogenesis Of Type 1 Diabetes, Robert N. Bone Jan 2014

The Involvement Of The Ca2+-Independent Phospholipase A2ss In The Pathogenesis Of Type 1 Diabetes, Robert N. Bone

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Type 1 diabetes is a metabolic disease characterized by hyperglycemia, an absolute deficiency in insulin, and the autoimmune-mediated destruction of pancreatic islet ß-cells. Since exogenous insulin does not effectively duplicate native ß-cell function and the need persists for life, strategies to prevent ß-cell death or promote ß-cell survival are expected to provide beneficial outcomes. Based on reports that Akt1 promotes ß-cell survival and proliferation, administration of viral vectors modified to effectively deliver constitutively active (CA)-Akt1 to ß-cells would be expected to be beneficial for the ß-cell. In freshly isolated islets, CA-Akt1 promoted ex vivo islet cell survival and ß-cell survival. …

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