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Full-Text Articles in Medicine and Health Sciences

Systematic Study Of Gene Functions For Morphological Chain Formation In Streptococcus Sanguinis, Karra Evans Jan 2011

Systematic Study Of Gene Functions For Morphological Chain Formation In Streptococcus Sanguinis, Karra Evans

Theses and Dissertations

Streptococcus sanguinis is a gram-positive facultative anaerobe that is indigenous to the oral cavity and a primary colonizer of the oral cavity. It serves as a tether for the attachment of several oral bacteria that colonize the tooth surface, form dental plaque, and cause periodontal disease. Previous experiments with streptococcal strains have suggested that cellular chain morphology of streptococci may influence the competitiveness, susceptibility to phagocytosis, acidurance, and aggregation of the bacterium. The purpose of this study was to systematically determine gene functions that contribute to cellular chain length morphology in the SK36 strain of S. sanguinis. Gene functions for …


Pediatrician Perceptions Of The Patient-Centered Medical Home Model, Christopher Ray Jan 2011

Pediatrician Perceptions Of The Patient-Centered Medical Home Model, Christopher Ray

Theses and Dissertations

The Patient-Centered Medical Home (PCMH) is an emerging model of health care designed to provide a simpler, more effective health care experience. The model places heavy emphasis on the concept of every patient having a "personal physician" who is the point of access for all health care needs and concerns. The personal physician integrates all relevant health care information to provide the patient with a holistic picture of his health. The supposed benefits of the PCMH model include an improved patient experience, increased effectiveness of care, increased efficiency of care, greater access to care, among others. Only now is evidence …


Acquired Cytogenetic Changes In Adult Twins Discordant For A History Of Childhood Sexual Abuse, Jenni Brumelle Jan 2011

Acquired Cytogenetic Changes In Adult Twins Discordant For A History Of Childhood Sexual Abuse, Jenni Brumelle

Theses and Dissertations

The primary study aim was to evaluate the latent biological effect of childhood sexual abuse (CSA) on adults by quantifying acquired cytogenetic changes and cortisol levels in identical twins who were discordant (N=22) or concordant (N=2) for a history of CSA. Although the difference scores for cortisol values between discordant identical co-twins were not significantly different from zero, a trend was observed for the twins exposed to intercourse, the most severe form of CSA, to have a blunted cortisol awakening response. Acquired cytogenetic changes were assessed by scoring telomere lengths and somatic cell abnormality frequencies via a cytokinesis-block micronucleus (MN) …


Hiv Protease Inhibitors Trigger Lipid Metabolism Dysregulation Through Endoplasmic Reticulum Stress And Autophagy, Beth Shoshana Zha Jan 2011

Hiv Protease Inhibitors Trigger Lipid Metabolism Dysregulation Through Endoplasmic Reticulum Stress And Autophagy, Beth Shoshana Zha

Theses and Dissertations

HIV protease inhibitors (PI) are core components of Highly Active Antiretroviral Therapy (HAART). HIV PIs are extremely effective at suppressing viral load, but have been linked to lipodystrophy and dyslipidemia, which are major risk factors for cardiovascular disease. Recent studies indicate that activation of endoplasmic reticulum (ER) stress is an important cellular mechanism underlying HIV PI-induced dysregulation of lipid metabolism. However, the exact role of ER stress in HIV PI-associated lipodystrophy and dyslipidemia remains to be identified. Hepatocytes and adipocytes are important players in regulating lipid metabolism and the inflammatory state. Dysfunction of these two cell types is closely linked …


Synthesis, Screening And Cocrystallization Of Adenosine Based Inhibitors With Methyltransferases, Ermc' And Ksga, Matthew Baker Jan 2011

Synthesis, Screening And Cocrystallization Of Adenosine Based Inhibitors With Methyltransferases, Ermc' And Ksga, Matthew Baker

Theses and Dissertations

Antibiotic resistance threatens to throw mankind back into an era when infectious disease was the predominant cause of death. In an effort to mitigate this danger, we targeted ErmC’ and KsgA. Both methylate N6-adenosine of ribosomal RNA, though each serve different roles in their bacterial host. ErmC’ dimethylates A2058 on 23S rRNA, conferring resistance to MLSB antibiotics (macrolides, lincosamides, streptogramin B). KsgA aids in ribosome assembly, binding inactive 30S until dimethylating A1518/A1519 of 16S rRNA. Like most methyltransferases, ErmC’ and KsgA use cofactor S-adenosylmethionine (SAM) as their methyl source, which binds adjacent to their specific adenosine substrate. ErmC’ inhibitors could …


Biobehavioral Relationships And Health Related Quality Of Life In Persons With End Stage Renal Disease On Hemodialysis, Avis Allen Jan 2011

Biobehavioral Relationships And Health Related Quality Of Life In Persons With End Stage Renal Disease On Hemodialysis, Avis Allen

Theses and Dissertations

The study of immune status and biobehavioral measures is limited in professional nursing. The purpose of the pre-pilot study was to describe levels of cytokines prior to, during, and after dialysis, examine changes in cytokine levels from immediate pre-dialysis to immediate post-dialysis, and to compare cytokine patterns prior to and after dialysis. A within subject descriptive study was conducted as part of a larger pilot study to describe levels of cytokines prior to, during, and after dialysis, examine changes in cytokine levels from immediate pre-dialysis to immediate post-dialysis, and to compare cytokine patterns prior to and after dialysis. Serum cytokine …


African American Males Diagnosed With Schizophrenia: A Phenomenological Study, Lorraine Anderson Jan 2011

African American Males Diagnosed With Schizophrenia: A Phenomenological Study, Lorraine Anderson

Theses and Dissertations

Abstract Little is known about how African American men with schizophrenia experience their every day existence. Through applying interpretive phenomenology and using a methodological structure designed by van Manen (1990, 1997), this research aimed to enrich the understanding of living with schizophrenia for these African American males. In this study, five men ranging in age from 21 to 57 described their lives within the context of existing with the diagnosis of schizophrenia. The lived experiences across the interviews revealed four overarching themes: They know that they are mentally ill; they make a special effort to test reality; they assert their …


The Cultural Context Of Alzheimer’S Disease: The Impact Of Perception And Knowledge On Willingness To Seek Medcial [I.E., Medical] Help Among Ghanaian Immigrants In The United States., Olivia Owusu-Boakyewaah Jan 2011

The Cultural Context Of Alzheimer’S Disease: The Impact Of Perception And Knowledge On Willingness To Seek Medcial [I.E., Medical] Help Among Ghanaian Immigrants In The United States., Olivia Owusu-Boakyewaah

Theses and Dissertations

This correlational study explored the knowledge, perceived seriousness, and willingness to seek medical help for Alzheimer’s Disease (AD) among Ghanaian Immigrants currently residing in the Unites States. Study participants were 163 Ghanaian Immigrants between the ages of 45 and 90, attending Ghanaian community churches in Virginia and Maryland. Significant results include a positive correlation between knowledge and perceived seriousness of the disease, perceived seriousness of the disease was negatively correlated with caregiving experience. These results as well as several seemingly counterintuitive findings are discussed in terms of the Health Disparities and Psychometric challenges. Specifically, these results points to the necessity …


A Study On The Effects Of Therapeutic Listening On The Social And Functional Behavior Of Preschool Children With Autism Spectrum Disorder, Robin Abbott Jan 2011

A Study On The Effects Of Therapeutic Listening On The Social And Functional Behavior Of Preschool Children With Autism Spectrum Disorder, Robin Abbott

Theses and Dissertations

Auditory sensory differences and sensitivities are often mentioned by parents of children with Autism Spectrum Disorder (ASD), and in research involving children with ASD. Addressing these auditory processing differences is the goal of various auditory treatment techniques, but current research does not yield a body of evidence in support of auditory therapy as a treatment for children with ASD. This study is a single-subject study, repeated across two subjects, to investigate the effect of the Therapeutic Listening program on the social engagement and self-care skills of preschool-aged children with ASD. Both social engagement and self-care skills increased with for both …


Hindfoot And Forefoot Kinematic Differences Among Individuals With And Without Functional Ankle Instability, Cynthia Wright Jan 2011

Hindfoot And Forefoot Kinematic Differences Among Individuals With And Without Functional Ankle Instability, Cynthia Wright

Theses and Dissertations

Introduction: Following lateral ankle sprain, many individuals experience recurrent injury and symptoms of giving-way, known as Functional Ankle Instability (FAI). It has been proposed that altered joint kinematics during activity may contribute to instability in these individuals, however research findings have been inconsistent. Objective: To capture foot and ankle kinematic data during two common tasks (walking gait and jump landing) among three groups: individuals with FAI, healthy controls and copers. Design: 3-group observational cross-sectional study. Participants: Participants included 23 individuals with a history of ≥ 1 ankle sprain and at least 2 episodes of giving-way in the past year (FAI: …


Biochemical Evaluation Of Lignin-Like Molecules, Jay Thakkar Jan 2011

Biochemical Evaluation Of Lignin-Like Molecules, Jay Thakkar

Theses and Dissertations

Current anticoagulants carry a serious risk of bleeding complications. In addition, narrow therapeutic index, drug interactions, immunological reactions, toxicity and high cost to benefit ratio limits the effective use of these drugs in patients with thrombotic conditions.Heparin is the most widely used anticoagulant. We hypothesized that one of the major drawback of heparins, its non-specific interaction with the plasma proteins arises as a result of negative charges. To reduce these non-specific interactions, our laboratory designed sulfated low molecular weight lignin (LMWL) like biomacromolecules, which were found to be direct inhibitors of thrombin and factor Xa, acting through a unique exosite-2 …


“Clicked” Bivalent Multifunctional Ligands In Alzheimer’S Disease., Ronak Gandhi Jan 2011

“Clicked” Bivalent Multifunctional Ligands In Alzheimer’S Disease., Ronak Gandhi

Theses and Dissertations

Alzheimer’s disease (AD) is a neurodegenerative disorder characterized by beta-amyloid (Aβ) aggregation/oligomerization, biometal dyshomeostasis, oxidative stress, and neuroinflammation. The multifactorial nature of AD may indicate the therapeutic potential of multifunctional ligands that tackle various risk factors simultaneously as effective AD-modifying agents. This notion is further supported by the fact that while numerous AD-modifying agents targeting one single risk factor have been developed and a number of them entered clinical trials, none of them has been successfully approved by the FDA. Furthermore, neuronal cell membrane/lipid rafts (CM/LR) have been demonstrated to associate with all the indicated risk factors, indicating that this …


Approaches For Enhancing Therapeutic Efficacy Of A Novel Il-10 Gene Family Member: Mda-7/Il-24, Belal Azab Jan 2011

Approaches For Enhancing Therapeutic Efficacy Of A Novel Il-10 Gene Family Member: Mda-7/Il-24, Belal Azab

Theses and Dissertations

Melanoma differentiation associated gene-7 (mda-7) was discovered in the Fisher laboratory by subtraction hybridization of temporally spaced subtracted cDNA libraries prepared from terminally differentiated human melanoma cells treated with human fibroblast interferon (IFN-β) and the protein kinase C activator mezerein (MEZ), an approach called ‘differentiation induction subtraction hybridization’ (DISH). mda-7 is located in human chromosome 1q32–33 and based on sequence homology, chromosomal localization, and its functional properties, the mda-7 gene is now classified as a member of the IL-10 family of cytokines and named IL-24. The mda-7/IL-24 cDNA encodes a protein of 206-amino acids with a predicted size of ~24-kDa, …


Cyclic-Di-Gmp Signaling In The Borrelia Spirochetes, John Freedman Jan 2011

Cyclic-Di-Gmp Signaling In The Borrelia Spirochetes, John Freedman

Theses and Dissertations

Lyme disease is the most common tick-borne disease in North America, with approximately 35,000 cases reported to the Centers for Disease Control in 2008. The genome of its causative agent, Borrelia burgdorferi, encodes for a set of genes involved in the metabolism and regulatory activities of the second messenger nucleotide, cyclic-di-GMP (c-di-GMP). Rrp1 is a response regulatory-diguanylate cyclase, and its regulatory capability is likely mediated via production of c-di-GMP, as it lacks a DNA-binding domain. One known class of c-di-GMP effector/binding proteins are those that harbor a PIlZ domain. The genome of B. burgdorferi strain 5A4 encodes for one chromosomally-carried …


Functional Consequences Of Cytosine Methylation In Mitochondrial Dna Catalyzed By Dna Methyltransferase 1, Lisa Shock Jan 2011

Functional Consequences Of Cytosine Methylation In Mitochondrial Dna Catalyzed By Dna Methyltransferase 1, Lisa Shock

Theses and Dissertations

Cytosine methylation of mitochondrial DNA (mtDNA) was first described several decades ago, but neither the mechanism generating this modification nor its functional significance was known. Because mitochondrial dysfunction is a hallmark characteristic of numerous human diseases, including neurological and cardiovascular disease, aging and cancer, this dissertation addressed whether epigenetic modification of mtDNA regulates mitochondrial function. We show that mtDNA contains not only 5-methylcytosine (5mC), but also 5-hydroxymethylcytosine (5hmC), suggesting that previous reports likely underestimated the degree of epigenetic modification within the mitochondrial genome. We questioned how these modifications were generated by looking for mitochondrial isoforms of the nuclear-encoded DNA methyltransferases. …


Genetic Manipulation Of The Relapsing Fever Spirochete Borrelia Hermsii Permits Novel Investigation Into The Role Of Factor H Binding In Borrelial Virulence, Lindy Fine Jan 2011

Genetic Manipulation Of The Relapsing Fever Spirochete Borrelia Hermsii Permits Novel Investigation Into The Role Of Factor H Binding In Borrelial Virulence, Lindy Fine

Theses and Dissertations

Borrelia hermsii, an etiologic agent of tick-borne relapsing fever, binds negative complement regulator factor H (FH) via its FhbA protein. Direct demonstration of the role of FhbA in the disease process has been hindered by the lack of genetic manipulation systems for the relapsing fever Borrelia. Here, we demonstrate successful generation of a B. hermsii strain YOR fhbA deletion mutant (Bh YORΔfhbA) that constitutively produces green fluorescent protein (GFP). Genetic manipulation did not affect growth rate or plasmid composition. Bh YORΔfhbA lost factor H-binding and C3b-inactivation capabilities, but retained resistance to killing in human serum and infectivity in mice. Stable …


The Effects Of Age And Heterochromatin On Frequencies Of Acquired Chromosomal Aneuploidy In Uncultured Human Leukocytes, Noran Aboalela Dec 2010

The Effects Of Age And Heterochromatin On Frequencies Of Acquired Chromosomal Aneuploidy In Uncultured Human Leukocytes, Noran Aboalela

Theses and Dissertations

While age-related sex chromosomal aneuploidy is a well-characterized phenomenon, the relationship between autosomal loss and age remains unclear. The emergence of the specific and highly sensitive fluorescence in situ hybridization (FISH) technology has enabled investigators to study interphase cells, thereby overcoming problems inherent with the study of metaphase spreads for acquired aneuploidy assessment. Despite all the advantages of this technique, there are some limitations that could be misleading when scoring interphase autosomal aneuploidy. In this study we show that sex chromosomal hypoploidy is correlated with age. By using a twin study design, we evaluated Y chromosome hypoploidy frequencies and found …


An Evaluation Of Cardiorespiratory Responses And Ventilatory Efficiency During Treadmill And Cycling Exercise In Overweight Adolescents, Amanda Scheps Dec 2010

An Evaluation Of Cardiorespiratory Responses And Ventilatory Efficiency During Treadmill And Cycling Exercise In Overweight Adolescents, Amanda Scheps

Theses and Dissertations

The assessment of ventilatory efficiency (VE/VCO2 slope) is increasingly being utilized to complement traditional cardiorespiratory fitness testing during graded exercise. The purpose of this study was to compare cardiorespiratory responses and ventilatory efficiency in obese children during a progressive exercise test to volitional fatigue performed on a treadmill and a cycle ergometer. Fifteen obese male (N=3) and female (N=12) adolescents aged 10 to 18 years were recruited in the study and completed both the treadmill and cycle ergometer trials. Mean age and BMI of the sample was 13.3 years and 38.0 kg/m2, respectively. Maximal oxygen consumption (VO2max) and ventilatory efficiency …


Mother-Infant Synchrony During Infant Feeding, Barbara Reyna Dec 2010

Mother-Infant Synchrony During Infant Feeding, Barbara Reyna

Theses and Dissertations

MOTHER-INFANT SYNCHRONY DURING INFANT FEEDING By Barbara A. Reyna, PhD A dissertation submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy at Virginia Commonwealth University. Virginia Commonwealth University, 2010. Major Director: Rita H. Pickler, PhD Endowed Nursing Alumni Professor Department of Family and Community Health Nursing, School of Nursing Synchrony between a mother and her infant is fundamental to their developing relationship. Feeding is an essential activity that provides an opportunity for interaction between a mother and her infant and may lead to synchronous interaction. The purpose this study was to develop and test a …


Haploinsufficiency Of Rai1 And Its Effect On Bdnf Expression, Sun Kim Dec 2010

Haploinsufficiency Of Rai1 And Its Effect On Bdnf Expression, Sun Kim

Theses and Dissertations

Smith-Magenis Syndrome (SMS) [OMIM, #182290] is a congenital anomaly and mental retardation (MCA/MR) syndrome associated with deletion of chromosome17p11.2 [1]. The clinical phenotype has been well described and includes minor craniofacial anomalies, self-injurious behaviors as well as sleep disturbances, speech delays, and obesity [1,2,3]. The incidence of SMS is estimated to be ~ 1:15,000 - 25,000 births [2,6]. Among SMS patients, ~90% are comprised of 17p11.2 deletions, while ~10% have RAI1 mutations [8]. All 17p11.2 deletions associated with SMS include RAI1 deletion [10]. RAI1 is thought to function as a transcriptional factor although its cellular role is still unclear. First, …


Facial Expression Discriminates Between Pain And Absence Of Pain In The Non-Communicative, Critically Ill Adult Patient, Mamoona Arif-Rahu Dec 2010

Facial Expression Discriminates Between Pain And Absence Of Pain In The Non-Communicative, Critically Ill Adult Patient, Mamoona Arif-Rahu

Theses and Dissertations

BACKGROUND: Pain assessment is a significant challenge in critically ill adults, especially those unable to communicate their pain level. At present there is no universally accepted pain scale for use in the non-communicative (cognitively impaired, sedated, paralyzed or mechanically ventilated) patient. Facial expressions are considered among the most reflexive and automatic nonverbal indices of pain. The facial expression component of pain assessment tools include a variety of facial descriptors (wincing, frowning, grimacing, smile/relaxed) with inconsistent pain intensity ratings or checklists of behaviors. The lack of consistent facial expression description and quantification of pain intensity makes standardization of pain evaluation difficult. …


An Analysis Of Ada Title I Allegations Of Workplace Discrimination As Filed With The Eeoc By Persons With Mental Illness, Jessica E. Hurley Dec 2010

An Analysis Of Ada Title I Allegations Of Workplace Discrimination As Filed With The Eeoc By Persons With Mental Illness, Jessica E. Hurley

Theses and Dissertations

ABSTRACT AN ANALYSIS OF ADA TITLE I ALLEGATIONS OF WORKPLACE DISCRIMINATION AS FILED WITH THE EEOC BY PERSONS WITH MENTAL ILLNESS Jessica Erin Hurley A dissertation submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Health Related Sciences—Rehabilitation Leadership Virginia Commonwealth University, 2011 Dissertation Chair: Brian T. McMahon, Ph.D., CRC This study explores employment discrimination as experienced by persons with mental illness who filed allegations under Title I (the employment provisions) of the Americans with Disabilities Act (ADA) of 1990. The entire universe of employment discrimination allegations filed under Title I of the ADA …


Approaches To Identify Surface Proteins Of Anaplasma Phagocytophilum Dense-Cored Organisms As Adhesins To Human P-Selectin Glycoprotein Ligand-1, Matthew Troese Dec 2010

Approaches To Identify Surface Proteins Of Anaplasma Phagocytophilum Dense-Cored Organisms As Adhesins To Human P-Selectin Glycoprotein Ligand-1, Matthew Troese

Theses and Dissertations

Anaplasma phagocytophilum is an obligatory intracellular bacterium that infects neutrophils to cause human granulocytic anaplasmosis. Sialyl Lewis x (sLex)-modified P-selectin glycoprotein ligand-1 (PSGL-1) is the confirmed receptor utilized by A. phagocytophilum to bind and invade human neutrophils and myeloid cell lines. As an obligate intracellular pathogen, the binding of A. phagocytophilum to a host cell receptor is a prerequisite step for entry and replication, and thus its survival. However, the bacterial adhesins mediating this process have yet to be identified. In this study, we sought to identify surface proteins of A. phagocytophilum as putative adhesins. A. phagocytophilum undergoes a biphasic …


Inhibition Of Cytomegalovirus Genome Maturation By The Halogenated Benzimidazoles, Anne Sauer Nov 2010

Inhibition Of Cytomegalovirus Genome Maturation By The Halogenated Benzimidazoles, Anne Sauer

Theses and Dissertations

Current FDA approved anti-cytomegalovirus antivirals are ganciclovir, foscarnet, and cidofovir. These drugs target the viral polymerase to inhibit DNA synthesis. Halogenated benzimidazoles target a step later in viral replication during packaging and cleavage of the viral genome. The compounds 2-Bromo-5,6-dichloro-1-(β-D-ribofuranosyl)benzimidazole (BDCRB) and 2,5,6-trichloro-1-(β-D-ribofuranosyl)benzimidazole (TCRB) are novel inhibitors of human cytomegalovirus (HCMV) and resistance to these compounds are found within the human cytomegalovirus viral terminase. Terminase is unique to the virus and in theory provides a good target for antiviral development. Beginning with a BDCRB resistant guinea pig cytomegalovirus observations found a single mutation located in the viral terminase gene UL89 …


Intrinsic Features Of The Multisensory Cortical Area Lrss In The Ferret, Alexandru Ioan Cojanu Nov 2010

Intrinsic Features Of The Multisensory Cortical Area Lrss In The Ferret, Alexandru Ioan Cojanu

Theses and Dissertations

Environmental events simultaneously transduced by more than one sensory modality underlie multisensory processing in the CNS. While most studies of multisensory processing examine functional effects, none have evaluated the influence of local or columnar circuitry. The goal of the present study is to examine of local features of the ferret lateral rostral suprasylvian sulcus (LRSS), a multisensory cortex. Immunostaining revealed the cytoarchitectonic features of the LRSS: thick supragranular layers, a narrow layer IV, and moderately stained but differentiated infragranular layers. Golgi-Cox techniques were used with light microscopy and digital reconstruction to document neuronal morphology. Among the 90 reconstructed neurons, 4 …


Smoking Cessation In Those Living With Schizophrenia, Angela Bradbury Nov 2010

Smoking Cessation In Those Living With Schizophrenia, Angela Bradbury

Theses and Dissertations

The study was conducted at a group home located in Salem County where 6 people with severe mental illness reside. 4 of the 6 people are smokers and diagnosed with schizophrenia. The 4 people in the study all showed interest in quitting smoking. The subjects were given questionnaires weekly and were monitored daily to record the amount of cigarettes smoked. The questionnaires that were administered are the Intention to Quit/ Interest in Quitting, Withdrawal Symptoms, Relief of Craving, and a Smoking Related Symptoms Score. The scores and answers were measured to see the likelihood and the motivation of the participants …


Do General, Community Hospitals Compete By Specializing In High Volume, High Revenue-Generating Service Lines?, Nancy J. Muller Nov 2010

Do General, Community Hospitals Compete By Specializing In High Volume, High Revenue-Generating Service Lines?, Nancy J. Muller

Theses and Dissertations

To determine if general, community hospitals show evidence of specializing in the nation's six highest volume, highest revenue-generating service lines, 2003-2007 data of hospitals throughout Florida, Virginia, and Nevada were analyzed using backward deletion, stepwise regression. Service lines selected for study were cardiac surgery, cardiology, invasive cardiology, orthopedics, labor and delivery, and pulmonary services. Results do show evidence of specialization, but characteristics of hospitals vary by service line. Findings suggest that the general, community hospital, traditionally a full-service provider, may be undergoing transformation including specialization. The study demonstrates the usefulness of studying specialization at the service line level.


Characterization And Development Of A Stroke-Induced Model Of Acquired Epilepsy In Organotypic Hippocampal Slice Cultures: Role Of The Cannabinoid Cb1 Receptors In Modulation Of Neuronal Excitation And Inhibition, Julie Ziobro Nov 2010

Characterization And Development Of A Stroke-Induced Model Of Acquired Epilepsy In Organotypic Hippocampal Slice Cultures: Role Of The Cannabinoid Cb1 Receptors In Modulation Of Neuronal Excitation And Inhibition, Julie Ziobro

Theses and Dissertations

Stroke is the most common cause of acquired epilepsy in persons 35 and older. The massive increase in extracellular glutamate during stroke causes a cascade of intracellular events that can lead to cell death or the molecular changes that initiate the development of epilepsy. In addition, many studies point to a modulatory role of the endocannabinoid system in controlling seizures. Animal models of stroke induced acquired epilepsy have been difficult to develop. Therefore, this dissertation was initiated to develop an organotypic hippocampal slice culture model of acquired epilepsy and examine the changes in distribution and function of the endogenous CB1 …


The Impact Of Hurricane Katrina On The Nurse Anesthesia Community In New Orleans, Marjorie Geisz-Everson Oct 2010

The Impact Of Hurricane Katrina On The Nurse Anesthesia Community In New Orleans, Marjorie Geisz-Everson

Theses and Dissertations

Hurricane Katrina devastated New Orleans in 2005. Certified Registered Nurse Anesthetists (CRNAs) and Student Registered Nurse Anesthetists (SRNAs) were impacted by the storm. CRNAs were required to be on duty during the storm and SRNAs’ education was disrupted by the storm. This dissertation is a compilation of three papers that represent the initial exploratory research into the impact of natural disasters on CRNAs and future CRNAs. The first article was a focused ethnography utilizing focus groups and described the shared experiences of CRNAs who were on duty in New Orleans during Hurricane Katrina and the psychosocial impact the storm had …


Determination Of Structure Of Hepatitis B Virus E Antigen, Asheel Patel Oct 2010

Determination Of Structure Of Hepatitis B Virus E Antigen, Asheel Patel

Theses and Dissertations

Hepatitis B virus is a member of the hepadnavirus family. The hepatitis B virus core gene codes for two proteins viz. core protein and pre-core protein. These proteins assemble to form particles viz. HBcAg and HBeAg respectively. The structure of the HBcAg has been widely studied but very little is known about the structure of HBeAg. Therefore, the aim of this study was to identify the disulfide bonding patterns in HBeAg. Recombinant HBeAg was isolated from E.coli and used for this study along with various mutants of HBeAg. There are four cysteines present in HBeAg each at position -7, 48, …