Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

2011

Discipline
Institution
Keyword
Publication
Publication Type
File Type

Articles 19081 - 19110 of 20317

Full-Text Articles in Entire DC Network

Oxidative Stress And Xanthine Oxidase In Acute And Chronic Cardiac Volume Overload In Rats, James Douglas Gladden Jan 2011

Oxidative Stress And Xanthine Oxidase In Acute And Chronic Cardiac Volume Overload In Rats, James Douglas Gladden

All ETDs from UAB

Mechanisms of left ventricular dysfunction in cardiac volume overload (VO) are not well understood and there is no medical therapy. Cardiac VO is marked by eccentric remodeling and contractile dysfunction ultimately resulting in cardiac failure. Oxidative stress is implicated in the pathophysiology of heart failure and recent evidence suggests xanthine oxidase (XO) plays a role in VO. To study VO, we used a rat model of aortocaval fistula (ACF). ACF results in early diastolic stress on the left ventricle (LV) and recapitulates the progressive nature of heart failure with contractile function being initially maintained and then depressed by 6 weeks. …

Go to article

Violating The Code: Inmates' Justifications For Failing To Uphold The Code, Anastasia Gwyn Brown Jan 2011

Violating The Code: Inmates' Justifications For Failing To Uphold The Code, Anastasia Gwyn Brown

All ETDs from UAB

Many theories have been created in hope of explaining why people deviate from societal norms to commit crimes. However, Elijah Anderson's Code of the Streets has recently grown in popularity as an explanation for street crime that construes criminal behavior more adequately than previous theories. Recent empirical evidence of researchers such as Anderson suggests the existence of an insidious street culture whose members identify themselves not with conventional norms, but instead with the standards of the street culture. To violate this street code would be to jeopardize self esteem and risk ostracism, further victimization, and often physical safety. However, people …

Go to article

Analysis Of The Structural And Kinetic Properties Of Sult2a1 Induced By The Binding Of 3'-Phosphoadenosine-5'-Phosphosulfate, Ian Thomas Cook Jan 2011

Analysis Of The Structural And Kinetic Properties Of Sult2a1 Induced By The Binding Of 3'-Phosphoadenosine-5'-Phosphosulfate, Ian Thomas Cook

All ETDs from UAB

Sulfation is an important Phase II drug metabolism reaction catalyzed by the cytosolic sulfotransferases (SULTs). SULT2A1 is a major SULT in liver and adrenal cortex that has been reported to sulfate a wide variety of substrates including bile acids, steroids, and drugs. The crystal structures of SULT2A1 suggest that PAPS binding causes a structural change. This study examines the kinetic changes in SULT2A1 caused by PAPS binding using computer modeling, enzyme kinetics, binding studies, and mammalian cells expressing SULT2A1. The data presented clearly demonstrate that the binding of PAPS changes the affinity of some substrates to SULT2A1 resulting in different …

Go to article

Differential Contributions Of C-Kit Activating Mutations To Promotion Of Aml1-Eto Associated Neoplasia, Heidi Jean Nick Jan 2011

Differential Contributions Of C-Kit Activating Mutations To Promotion Of Aml1-Eto Associated Neoplasia, Heidi Jean Nick

All ETDs from UAB

The t(8;21) translocation, which generates an AML1-ETO fusion protein (also known as RUNX1-ETO), is one of the most frequent cytogenetic abnormalities in acute myeloid leukemia (AML). Murine studies have demonstrated that AML1-ETO promotes the accumulation of myeloid progenitor cells with self-renewal capability and impaired differentiation capacity. However, AML1-ETO+ mice do not progress to AML in the absence of additional mutations, suggesting that expression of the translocation is insufficient for leukemogenesis. This hypothesis is supported by studies demonstrating the persistence of AML1-ETO-expressing hematopoietic progenitors obtained from patients in long-term clinical remission. Mutations affecting receptor tyrosine kinases, particularly c-KIT, are commonly detected …

Go to article

Comparison Of Vitamin D Supplementation Regimens In Pediatric Patients With Cystic Fibrosis, Julianna Bailey Jan 2011

Comparison Of Vitamin D Supplementation Regimens In Pediatric Patients With Cystic Fibrosis, Julianna Bailey

All ETDs from UAB

COMPARISON OF VITAMIN D SUPPLEMENTATION REGIMENS IN PEDIATRIC PATIENTS WITH CYSTIC FIBROSIS JULIANNA BAILEY CLINICAL NUTRITION ABSTRACT The objective of this randomized prospective study was to determine the most efficacious form of vitamin D supplementation for pediatric patients with Cystic Fibrosis (CF). We hypothesized that 50,000 IU monthly cholecalciferol would be as effective in raising serum 25-hyrdroxyvitamin D [25(OH)D] concentrations as routine daily supplementation of 1000-2000 IU cholecalciferol in pediatric patients with CF, birth to 20 years of age, over a period of 3 months. Data collected at baseline included serum 25(OH)D concentration, gender, genotype, race, age, FEV1, height, weight, …

Go to article

Gas Phase Laser Synthesis And Processing Of Calcium Phosphate Nanoparticles For Biomedical Applications, Parimal Vilas Bapat Jan 2011

Gas Phase Laser Synthesis And Processing Of Calcium Phosphate Nanoparticles For Biomedical Applications, Parimal Vilas Bapat

All ETDs from UAB

Biochemical processes make pervasive use of calcium and phosphate ions. Calcium phosphate salts that are naturally nontoxic and bioactive have been used for several medical applications in form of coatings and micropowders. Nanoparticle-based calcium phosphates have been shown to be internalized by living cells and be effective in DNA transfection, drug delivery, and transport of fluorophores for imaging of intracellular processes. They are also expected to interact strongly with cell adhesive proteins and are therefore promising elements in approaches to mimic the complex environment of the extra cellular matrix of bone. Harnessing this biomedical potential requires the ability to control …

Go to article

Sensitization Of Glioma To Death Receptor 5-Mediated Apoptosis Through Genotoxic Stress And Cell Cycle Disruption: A Study Of Mechanism, Michael L. Belenky Jan 2011

Sensitization Of Glioma To Death Receptor 5-Mediated Apoptosis Through Genotoxic Stress And Cell Cycle Disruption: A Study Of Mechanism, Michael L. Belenky

All ETDs from UAB

Our laboratory reported that a combination of ionizing radiation (IR) or temozolomide (Tmz), a DNA methylating agent clinically approved against glioblastoma multiforme (GBM), a type of human brain cancer, and TRA-8, an anti-DR5 monoclonal antibody produced synergistic cytotoxicity in GBM cells in culture and in mouse xenograft models through an yet unknown mechanism. I hypothesized that understanding of the synergy phenomenon can offer an insight into the nature of GBM vulnerability. The goals of this investigation were two-fold - to elucidate the mechanism of this enhancement in cytotoxicity, and to improve understanding of DR5 mediated apoptosis toward improvement of current …

Go to article

Investigation Of Numerical Approaches To Analyze Flapping Wings, Nitin Bhagat Jan 2011

Investigation Of Numerical Approaches To Analyze Flapping Wings, Nitin Bhagat

All ETDs from UAB

For centuries, the agility and maneuverability of flying insects have been an inspiration to fluid dynamists. A large number of research activities have been conducted within the biological, aerodynamics, and computational science communities to understand the complex flow fields around flapping insects and their capability for rapid maneuvers. However, the understanding of these natural phenomena is still in its infancy. Recent experimental flow visualizations have shown the complex vortical structures around flapping wings and vortex interactions. Even with the advent of faster and better computer processors and improved numerical algorithms, computational fluid dynamics (CFD) techniques to accurately predict flow features …

Go to article

Hierarchical And Bayesian Approaches For Estimating Prevalence Based On Pool Screening, Thomas Birkner Jan 2011

Hierarchical And Bayesian Approaches For Estimating Prevalence Based On Pool Screening, Thomas Birkner

All ETDs from UAB

Pool screening is a method that combines individual items into pools. Each pool will either test positive (at least one of the items is positive) or negative (all items are negative). Pool screening is commonly applied to the study of tropical diseases where pools consist of vectors (e.g. black flies) that can transmit the disease. The goal is to estimate the proportion of infected vectors. In paper 1, we present a frequentist Bernoulli-Beta hierarchical model to relax the constant prevalence assumption underlying the traditional frequentist prevalence estimation approach. This assumption is called into question when sampling from a large geographic …

Go to article

Three Topics In Eye Injury Research, Justin Blackburn Jan 2011

Three Topics In Eye Injury Research, Justin Blackburn

All ETDs from UAB

Eye injuries are a leading cause of monocular blindness, with approximately 2 million Americans sustaining an eye injury annually. Occupational eye injuries resulting in at least one missed day of work total nearly 28,000 each year. Eye injuries have many different etiologies, although most are "minor" injuries such as corneal abrasions and foreign bodies. Chemical-related eye injuries have not been described epidemiologically. The most widely advocated prevention method for eye injuries is protective eyewear, but evidence to support this is surprisingly absent. Furthermore, the use of eye protection among workers who have previously sustained an eye injury remains a question …

Go to article

Exopolysaccharide: A Multi-Faceted Role In Mycoplasma Pulmonis, Jeffrey R. Bolland Jan 2011

Exopolysaccharide: A Multi-Faceted Role In Mycoplasma Pulmonis, Jeffrey R. Bolland

All ETDs from UAB

The recently characterized exopolysaccharide of Mycoplasma pulmonis, EPS-I, has been identified as modulating the susceptibility to complement-mediated lysis and binding to host mucosal epithelium. M. pulmonis produces family of size- and phase-variable lipoproteins called Vsa. Previous evidence has strongly demonstrated that the length of the tandem repeat region of the M. pulmonis Vsa protein is associated with the susceptibility to the host innate immune system through complement-mediated lysis. Mycoplasmas producing a long form of Vsa, containing about 40 repeats, are resistant complement whereas strains that produce the short form of Vsa, 5 repeats or fewer, are susceptible. Furthermore, the size …

Go to article

The Role Of Protein Folding And Protein Trafficking In Human Disease, Cristy Davette Tower-Gilchrist Jan 2011

The Role Of Protein Folding And Protein Trafficking In Human Disease, Cristy Davette Tower-Gilchrist

All ETDs from UAB

This dissertation documents my findings in two unrelated projects. Project 1: Expansion of CAG repeats encoding glutamine in huntingtin and ataxin 3 causes the neurodegenerative diseases Huntington's disease (HD) and spinocerebellar ataxia 3 (SCA3), respectively. Both poly-glutamine (polyQ) expanded proteins misfold and ag-gregate within the cell. Preventing aggregation of polyQ proteins through molecular or pharmacological approaches provide therapeutic advantage in animal models of HD and SCA3. I hypothesized that the UL97 kinase encoded by the human cytomegalovirus (HCMV) may be able to prevent the aggregation of polyQ proteins. Initially, I showed that the UL97 kinase prevents the deposition of aggregates …

Go to article

The Requisite Role Of Dectin-1 And Il-17 In Innate Host Defense Against Aspergillus Fumigatus, Jessica L. Werner Jan 2011

The Requisite Role Of Dectin-1 And Il-17 In Innate Host Defense Against Aspergillus Fumigatus, Jessica L. Werner

All ETDs from UAB

Immune suppression increases the incidence of invasive fungal infections, particularly those caused by the opportunistic mold Aspergillus fumigatus. We show that non-immunosuppressed mice lacking the beta-glucan receptor Dectin-1 (Dectin-1-/-) are more susceptible to intratracheal challenge with A. fumigatus than control mice, exhibiting >80% mortality within 5 days; ultimately attributed to a compromise in respiratory mechanics. In response to A. fumigatus challenge, Dectin-1-/- mice demonstrated impaired inflammatory response as seen through defective cytokine and chemokine production, which resulted in insufficient lung neutrophil recruitment and uncontrolled A. fumigatus lung growth. Alveolar macrophages from Dectin-1-/- mice failed to produce proinflammatory mediators in response …

Go to article

The Effect Of Optimism On The Relationship Between Religiosity And Spirituality Among Elderly Christians, Matthew West Jan 2011

The Effect Of Optimism On The Relationship Between Religiosity And Spirituality Among Elderly Christians, Matthew West

All ETDs from UAB

Older Americans represent one of the most devout groups of religious people in America, yet research is consistently scarce on how to use this characteristic in mental health interventions. This study uses Ordinary Least Squares regression of a 2004, national sample of older Christian Americans to assess the relationship between private prayer, church attendance, prayer group participation, religious meaning, optimism, and depressive symptomology. Previous work has found a strong positive relationship between religion and health outcomes. The present endeavor goes beyond examining the main effects of such relationships to look at a possible moderating mechanism--optimism. Controlling for demographic variables and …

Go to article

An Examination Of The Relationship Between The Exposure To The Use Of Cash Incentives As A Part Of The A Plus Grant Program And Performance On The Advanced Placement Exam, Juanita Inman-Vann Jan 2011

An Examination Of The Relationship Between The Exposure To The Use Of Cash Incentives As A Part Of The A Plus Grant Program And Performance On The Advanced Placement Exam, Juanita Inman-Vann

All ETDs from UAB

This research examined the relationship between the use of cash incentives and performance of high school students on the Advanced Placement (AP) exam by gender, race/ethnicity, and socioeconomic status. Logistic regression was used with binary variables to determine predictor variables for success on the AP exam. This quantitative analysis found that while gender does not have a relationship to success, race/ethnicity, socioeconomic status, and the use of cash incentives are related for certain groups. The use of cash incentives was the strongest predictor of success on the exam, which supports the theory of operant conditioning discussed in the literature. The …

Go to article

Neighborhood Characteristics And Weight Status In Preschool Children, Cynthia Irwin Joiner Jan 2011

Neighborhood Characteristics And Weight Status In Preschool Children, Cynthia Irwin Joiner

All ETDs from UAB

Introduction: Childhood obesity is increasing at an alarming rate particularly among minority and low-income populations. More than 12 million children and adolescents are obese (Ogden, Carroll, Curtin, Lamb, & Flegal, 2010). Research on the neighborhood and built environment is relatively new. Few studies have examined the relationship of neighborhood characteristics and weight status, and studies in the preschool population are limited. Study Purpose: The study had three aims: 1) to examine the relationship between neighborhood characteristics (number of grocery stores and fast food restaurants, and number and quality of parks) and weight status (overweight and obese) in low income, preschool …

Go to article

Gender, Race, Power And Condom-Use: Understanding Relationship Power And Condom-Use Among Young Heterosexually-Active Adults, Tara L. Jones Jan 2011

Gender, Race, Power And Condom-Use: Understanding Relationship Power And Condom-Use Among Young Heterosexually-Active Adults, Tara L. Jones

All ETDs from UAB

GENDER, RACE, POWER AND CONDOM-USE: UNDERSTANDING RELATIONSHIP POWER AND CONDOM-USE AMONG YOUNG HETEROSEXUALLY-ACTIVE ADULTS HIV/AIDS continues to be a significant public health threat among heterosexual-ly-active females in the United States, particularly among Black females. Rates of HIV infection among heterosexually-active, non-injection drug using females have been in-creasing since the 1990s. Previous research recommends the need to consider the gen-dered and cultural context within which these infections are occurring. This research re-sponds to these recommendations by using Connell's (1987) theory of gender and power as a theoretical guide to test the following research questions: 1. Does relationship power differ by sex …

Go to article

Low And High Let Irradiation Of Human Aortic Endothelial Cells Induces Dose And Time Dependent Adhesion Of Monocytes Which Is Mediated By Chemokines Expressed By The Irradiated Endothelium., Saman Fatima Khaled Jan 2011

Low And High Let Irradiation Of Human Aortic Endothelial Cells Induces Dose And Time Dependent Adhesion Of Monocytes Which Is Mediated By Chemokines Expressed By The Irradiated Endothelium., Saman Fatima Khaled

All ETDs from UAB

Exposure to radiation from a variety of sources is associated with increased risk of heart disease and stroke. Since radiation also induces inflammation, a possible mechanism is a change in the adhesiveness of vascular endothelial cells, triggering pro-atherogenic accumulation of leukocytes. To investigate this mechanism at the cellular level, the effect of xrays, iron (Fe56) ions, and protons on adhesiveness of cultured human aortic endothelial cells (HAECs) was determined. HAECs were grown as monolayers and exposed to 0 to 30 Gy X-rays, 0, 2, and 5 Gy Fe56 ions, and 0, 0.5, and 2 Gy protons followed by measurement of …

Go to article

Fmri Reactivity To Trial Difficulty On A Delay Discounting Task Predicts Weight Gain In Obese Women, Felix Kishinevsky Jan 2011

Fmri Reactivity To Trial Difficulty On A Delay Discounting Task Predicts Weight Gain In Obese Women, Felix Kishinevsky

All ETDs from UAB

Obesity is a serious public health issue. Obesity may be accompanied by abnor-malities in executive function circuitry related to impulsivity. A useful task for studying impulsivity is the delay discounting (DD) of money task, in which an individual chooses in a series of trials between an immediate and a delayed, but greater, amount of money. On the DD task, individuals with various addictions make more immediate than delayed choices, compared to controls. Similar results have been observed in obese compared to healthy-weight women. Functional neuroimaging studies in addicted individuals have found that lower activation in executive function/inhibitory control areas during …

Go to article

An Examination Of Secondary Metabolites And Inorganic Acids As Chemical Defenses Against Predation And Fouling In Antarctic And Sub-Tropical Ascidians, Gil Koplovitz Jan 2011

An Examination Of Secondary Metabolites And Inorganic Acids As Chemical Defenses Against Predation And Fouling In Antarctic And Sub-Tropical Ascidians, Gil Koplovitz

All ETDs from UAB

Palatability of outer tissues of 12 species of ascidians from the Western Antarctic Peninsula was evaluated using the sympatric, omnivorous predator fish Notothenia coriiceps and sea star Odontaster validus. Tissues of 100% of those tested were unpalatable to fish, while 58% were unpalatable to sea stars. Lipophilic and hydrophilic extracts of 11 species were incorporated into pellets and tested in fish and sea star bioassays. Only the lipophilic extract from Distaplia colligans caused sea star and fish feeding deterrence. Organic extracts from 10 ascidian species were also examined in food pellet assays using the sympatric, omnivorous amphipod Gondogeneia antarctica. Only …

Go to article

The Role Of Trib3 In Insulin Resistance: Its Action As Nutrient Sensor And Regulator Of Insulin Action, Jiarong Lamiquiz Jan 2011

The Role Of Trib3 In Insulin Resistance: Its Action As Nutrient Sensor And Regulator Of Insulin Action, Jiarong Lamiquiz

All ETDs from UAB

THE ROLE OF TRIB3 IN INSULIN RESISTANCE: ITS ACTION AS NUTRIENT SENSOR AND REGULATOR OF INSULIN ACTION JIARONG LIU LAMIQUIZ PATHOLOGY ABSTRACT Insulin resistance is a hallmark of Type 2 diabetes (T2DM). A reduced capacity for insulin to stimulate increases in glucose uptake and glucose oxidation in insulin sensitive tissues, such as skeletal muscle and adipose tissue, are common defects in patients with insulin resistance, T2DM, and other related diseases. Tribbles homolog 3 (TRIB3) has been demonstrated to play a role in insulin resistance by serving as a negative regulator of Akt in mouse liver, fat, and pancreas. In a …

Go to article

Elucidation Of The Elongated Fibrillar Structure Of Streptococcus Mutans Antigen I/Ii, Matthew Rodney Larson Jan 2011

Elucidation Of The Elongated Fibrillar Structure Of Streptococcus Mutans Antigen I/Ii, Matthew Rodney Larson

All ETDs from UAB

Streptococcus mutans (S. mutans) is the causative agent behind dental caries, an infectious disease also known as tooth decay or dental cavities. S. mutans has a cell wall-attached protein known as Antigen I/II (AgI/II) utilized for bacterial adhesion to the tooth surface. Here we have solved the structures of both amino- and carboxy-terminal regions of the AgI/II molecule using X-ray crystallography. Using this structural information we have now built a tertiary model for AgI/II as a fibrillar protein. Further, we have functionally characterized AgI/II and determined minimal regions of AgI/II that are implicated in its adherence to the salivary agglutinin …

Go to article

Bayesian Hierarchical Generalized Linear Models For Detecting (Rare) Haplotype-Haplotype And Haplotype-Environment Interactions In Genetic Association Analysis, Jun Li Jan 2011

Bayesian Hierarchical Generalized Linear Models For Detecting (Rare) Haplotype-Haplotype And Haplotype-Environment Interactions In Genetic Association Analysis, Jun Li

All ETDs from UAB

This dissertation research focuses on genetic association analysis based on haplotypes in the context of both population-based and family-based studies. Haplotype-based association analysis is powerful in the discovery and characterization of the genetic basis of complex human diseases. However, statistical models that fit haplotype-haplotype and haplotype-environment interactions have not yet been fully developed. Furthermore, statistical methods for detecting the association between rare haplotypes and disease have not kept pace with their counterpart of common haplotypes. For both population-based and family-based association analyses, we herein propose two efficient and robust methods to separately tackle these problems based on Bayesian hierarchical generalized …

Go to article

Functional Imaging Of Excitable Cells: Retinal Neurons And Pancreatic Islet Beta Cells, Yichao Li Jan 2011

Functional Imaging Of Excitable Cells: Retinal Neurons And Pancreatic Islet Beta Cells, Yichao Li

All ETDs from UAB

Stimulus-evoked fast intrinsic optical signals (IOSs) have time courses comparable to electrophysiological kinetics, and thus promise a sub-cellular and sub-second resolution method for functional evaluation of excitable biological tissues. The objective of my thesis research is to validate and characterize IOS imaging of stimulus-evoked activities in the retina and pancreatic islet ß-cells. In order to achieve this objective, three sets of experiments have been conducted. 1) Simultaneous measurement of retinal neurons functioning can enhance our understanding of the visual signal processing. In this stage of my study, I propose to demonstrate IOS imaging of retina slices that allows simultaneous monitoring …

Go to article

Sexual Orientation And Risk: Patterns Of Association Across Outcomes, Penny S. Loosier Jan 2011

Sexual Orientation And Risk: Patterns Of Association Across Outcomes, Penny S. Loosier

All ETDs from UAB

This study highlights associations between sexual orientation and risk outcomes in late adolescence and early adulthood using an expanded measure of sexual orientation. Recent data indicate higher levels of risk behavior in a newly identified population, mostly heterosexuals, as compared to heterosexuals. Comparisons among groups using an expanded measure of sexual orientation such as this, however, often do not include all possible groups or may restrict comparisons between groups. Data were derived from the National Longitudinal Study of Adolescent Health (Add Health); participants identified as heterosexual, mostly heterosexual, bisexual, mostly gay, or gay. Risk outcomes were parental mistreatment, home displacement, …

Go to article

Identification Of Putative Gene Targets Of Pgc-1alpha In The Brain: Insights Into Inhibitory Neuron Maturation, Physiology, And Behavior, Elizabeth Lucas Jan 2011

Identification Of Putative Gene Targets Of Pgc-1alpha In The Brain: Insights Into Inhibitory Neuron Maturation, Physiology, And Behavior, Elizabeth Lucas

All ETDs from UAB

The transcriptional coactivator peroxisome proliferator activated receptor γ coactivator 1α (PGC-1α) is a master regulator of energy homeostasis in peripheral tissues, and it has been assumed that PGC-1α plays a similar role in the brain. Previous work has shown that PGC-1α localizes to neurons that express high levels of the enzyme glutamic acid decarboxylase of 67 kDa (GAD67) during early postnatal development, leading us to hypothesize that PGC-1α regulates gene expression primarily in GABAergic neurons. We initially investigated the distribution of inhibitory neuron markers in PGC-1α -/- mice and observed a striking reduction in expression of the Ca2+-binding protein parvalbumin …

Go to article

Analysis Of Nphp Complex Genetic Interactions Associated With Human Cilia Disorders, Svetlana Viktorovna Masyukova Jan 2011

Analysis Of Nphp Complex Genetic Interactions Associated With Human Cilia Disorders, Svetlana Viktorovna Masyukova

All ETDs from UAB

Primary cilia are antenna-like organelles that extend from the surface of almost all mammalian cell types. They regulate many signaling pathways and sense physical and chemical changes in the extracellular environment. Defects in primary cilia cause several human disorders of different severity collectively called ciliopathies, including nephronophthisis (NPHP), Joubert syndrome (JBTS), and Meckel-Gruber syndrome (MKS). Numerous MKS, JBTS and NPHP genes have been identified but in most cases of these ciliopathies the genetic defect is unknown. Despite the fact that NPHP, JBTS and MKS patients present with distinct clinical features, they have mutations in identical genes. This can be explained …

Go to article

Hemoglobin Switching, Thalassemia And Sickle Cell Disease In Humanized Knockin Mice, Sean Mcconnell Jan 2011

Hemoglobin Switching, Thalassemia And Sickle Cell Disease In Humanized Knockin Mice, Sean Mcconnell

All ETDs from UAB

In this dissertation we describe knockin mouse models for the study of human hemoglobin disorders. These knockin human globin genes, in contrast to transgenes, replace the adult mouse globin genes, remain under control of endogenous mouse globin enhancer sequences and are inherited in a manner identical to globin alleles in man. Starting with various knockin alleles composed of unique human alpha, beta and gamma globin gene sequences, we evaluate several allele combinations towards our goal of generating improved models of thalassemia and sickle cells disease. We show that humanized knockin mice complete a fetal to adult hemoglobin switch during postnatal …

Go to article

Alcoholic Women In Recovery: A Phenomenological Inquiry Of Spirituality And Recidivism Prevention, Jennifer Irene Mcleod Jan 2011

Alcoholic Women In Recovery: A Phenomenological Inquiry Of Spirituality And Recidivism Prevention, Jennifer Irene Mcleod

All ETDs from UAB

In the United States, 7-12% of women compared to 20% of men, abuse alcohol, yet the social and medical consequences impact women much harder and faster than men. Women aggrieved by alcoholism have unique health and social consequences which are not well understood because women have been marginalized in studies of alcoholism. Little is known about the nature of the lived experience of the recovery process in women who have achieved a stable recovery and prevented recidivism. The aim of this study was to describe the lived experiences of alcoholic women in a stable recovery, defined as sustained abstinence for …

Go to article

Study Of The Cold Adaptive Mechanisms In Antarctic Bacteria And Investigation Of The Chemotherapeutic And Antimicrobial Potential Of Their Pigments, Nazia Mojib Jan 2011

Study Of The Cold Adaptive Mechanisms In Antarctic Bacteria And Investigation Of The Chemotherapeutic And Antimicrobial Potential Of Their Pigments, Nazia Mojib

All ETDs from UAB

Antarctic ecosystems are extreme environments to study the biodiversity, survival and adaptation of bacteria. The current study describes the rich and diverse heterotrophic bacterial communities from seasonally ice-free open lakes in East Antarctic Schirmacher Oasis and a perennially ice-covered Lake Joyce in West An-tarctic McMurdo Dry Valleys using culture-dependent and culture-independent approaches. Heterotrophic bacteria from three different Phyla: Proteobacteria, Bacteroidetes and Actinobacteria were cultured from lakes of Schirmacher Oasis using 16S rRNA gene-based taxonomic analysis. However, similar approach applied on the community DNA of the Black Hole sediments in Lake Joyce exhibited previously undescribed heterotrophs from seven different phyla: Proteobacteria, …

Go to article

First Prev Next Last