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2022

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Exploring The Relationship Between Chronic Stressors And Protective Factors And Preterm Risk In An African American Pregnant Population, Megan Mileski Jan 2022

Exploring The Relationship Between Chronic Stressors And Protective Factors And Preterm Risk In An African American Pregnant Population, Megan Mileski

All ETDs from UAB

BACKGROUND: In the United States, infant mortality is a serious public health issue, particularly for the African American (AA) population. Despite ample research investigating explanations for the significantly higher infant mortality rate (IMR) for AA infants in the United States, the reason for the racial disparity remains unknown. Reports suggest that chronic, life-course stressors may increase risk of preterm birth (PTB), the leading contributor to the high IMR for AA infants. Adverse childhood experiences and perceived racial discrimination, experienced over the life course, have the potential to increase a stress response in AA women, leading to PTB. Psychosocial resources may …

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Roles Of Chemokine Receptors In T Cell Accmulation In Omental Tumors, Mingyong Liu Jan 2022

Roles Of Chemokine Receptors In T Cell Accmulation In Omental Tumors, Mingyong Liu

All ETDs from UAB

The omentum is an adipose tissue in the peritoneal cavity that contains immune aggregates termed milky spots. Functionally similar to conventional lymphoid tissues, these specialized leukocyte clusters harbor effector and suppressor cells, mount immune responses to antigens, and sustain peritoneal homeostasis. However, the pre-existing leukocytes fail to protect the tissue from tumor colonization. In fact, the omentum is frequently involved in peritoneal metastasis, during which the balance between effector and suppressor immune cells is compromised with the latter gaining dominance. Regulatory T cells (Tregs) represent a major immunosuppressive population in the omentum and rapidly accumulate after tumor implantation. The increased …

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Characterizing The Role Of Tissue-Specific Retinol Dehydrogenases, Kelli Rae Goggans Jan 2022

Characterizing The Role Of Tissue-Specific Retinol Dehydrogenases, Kelli Rae Goggans

All ETDs from UAB

The bioactive form of vitamin A, retinoic acid is essential for development, cellular differentiation, epigenetic modifications, the immune system, and a variety of other processes due to its ability to regulate over 500 genes through activation of nuclear receptors. While many studies have focused on characterizing the biosynthesis and signaling of retinoic acid in embryogenesis, few have focused on adult tissues. Recent research has identified a novel retinol dehydrogenase, retinol dehydrogenase epidermal 2 (RDHE2), and shown RDHE2 is a potent, physiologically relevant retinol dehydrogenase in Xenopus. The work in this dissertation characterizes RDHE2 in mammalian models. We identify a paralog …

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Transcriptional Regulation Of Metabolism And Synaptic Function In Neurons, Stephanie N. Fox Jan 2022

Transcriptional Regulation Of Metabolism And Synaptic Function In Neurons, Stephanie N. Fox

All ETDs from UAB

Mitochondrial dysfunction, transcriptional dysregulation, and protein aggregation are all unifying features of neurodegenerative disorders, including Parkinson’s Disease. Parkinson’s Disease is a debilitating movement disorder with no known cure, leading sci-entists to explore the underlying etiological contributors to neuronal dysfunction and loss to devise strategies for neuroprotection. Estrogen-related receptor gamma (ERRγ) is a member of a family of transcription factors which regulate the expression of mitochondrial genes. To determine whether ERRγ modulation can provide insight into transcriptional and mitochondrial dysfunction with neurodegeneration, the experiments in this thesis project determined 1) the importance of transcription of mitochondrial genes in disease as regu-lated …

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Epigenetic Regulation Of Gene Expression In Temporal Lobe Epilepsy, Rebecca Mary Hauser Jan 2022

Epigenetic Regulation Of Gene Expression In Temporal Lobe Epilepsy, Rebecca Mary Hauser

All ETDs from UAB

Temporal lobe epilepsy (TLE) is the most common form of focal epilepsy and is characterized by seizures originating from the temporal lobe of the brain. A frequent seizure focus in TLE is the hippocampus, a structure located within the temporal lobe crucial for its role in memory formation. Seizures are an excess of synchronous excitation in the brain caused by a surplus of excitatory neurotransmission and a lack of sufficient inhibitory transmission. Coordinating the process of neuronal transmission is differential expression of genes likely resulting in an increase or decrease in proteins responsible for neural signaling such as neurotransmitters, ion …

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Il-2-Mediated Stat3 Activation Controls Effector T Regulatory Cell Development, Emma C. Dean Jan 2022

Il-2-Mediated Stat3 Activation Controls Effector T Regulatory Cell Development, Emma C. Dean

All ETDs from UAB

Heterogeneity in phenotype and function of Treg cells is becoming increasingly appreciated, especially in the context of creating potent Treg cell–based therapeutics in the treatment of inflammatory bowel disease. One of the barriers to developing such therapeutics is the limited understanding of the signals that play a role in the development of Treg cell subsets. Here, we found STAT3 signaling to be enriched in induced IL-10 competent Treg (iTreg) cells in the colon. Through the development of a new in vitro system, we found that STAT3 was required for proper development of IL-10 competent iTreg cells and that IL-2 regulated …

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Integrated Phenotypic And Molecular Expression Circuits In End-Stage Osteoarthritis, Devin J. Drummer Jan 2022

Integrated Phenotypic And Molecular Expression Circuits In End-Stage Osteoarthritis, Devin J. Drummer

All ETDs from UAB

Osteoarthritis (OA) is a debilitating, inflammatory, joint degeneration disorder, and is the most common form of arthritis. Individuals reaching end-stage OA often pursue elective total hip/knee arthroplasty (THA/TKA) to relieve pain and improve mobility and quality of life. However, approximately one third of THA/TKA patients suffer long-term mobility impairments following surgery, likely in part due to an inability to repair the damaged muscle surrounding the diseased joint. Mechanisms driving this impaired recovery remain poorly understood, therefore it is prudent to interrogate the molecular signatures in skeletal muscle at the time of surgery to provide candidate markers that may improve upon …

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Examining Urban Teachers' Perceptions And Practices Of Family Literacy Partnerships In Schools, Homes, And Communities: A Case Study, Andrea M. Dailey Jan 2022

Examining Urban Teachers' Perceptions And Practices Of Family Literacy Partnerships In Schools, Homes, And Communities: A Case Study, Andrea M. Dailey

All ETDs from UAB

This qualitative case study examined urban teachers' perceptions and experiences of family literacy practices and partnerships in urban schools, homes, and communities during remote learning. Research shows that collaboration among schools, families, and communities can help improve overall educational outcomes and literacy development of children from linguistic and low socioeconomic backgrounds (Curry et al., 2016; Henderson & Mapp, 2002; Taylor, 1989). However, there is limited research on family literacy practices and partnerships in urban settings during remote learning. Therefore, this research explores family literacy practices and partnerships between schools, families, and communities in urban environments to help improve students' literacy …

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Scalable Subgraph Mining In A Big Graph, Guimu Guo Jan 2022

Scalable Subgraph Mining In A Big Graph, Guimu Guo

All ETDs from UAB

Finding from a big graph those subgraphs that satisfy certain conditions is useful in many applications such as community detection and subgraph matching. These problems have a high time complexity, but existing systems to scale them are all IO-bound in execution. We propose the first truly CPU-bound distributed framework called G-thinker that adopts a userfriendly subgraph-centric vertex-pulling API for writing distributed subgraph mining algorithms. To utilize all CPU cores of a cluster, G-thinker features (1) a highly concurrent vertex cache for parallel task access and (2) a lightweight task scheduling approach that ensures high task throughput. These designs well overlap …

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Mechanotransduction Signaling On Ovarian Cancer Results In Increased Proliferation, Migration, And Chemoresistance In 2d And 3d In Vitro And In Vivo Models, Molly Buckley Jan 2022

Mechanotransduction Signaling On Ovarian Cancer Results In Increased Proliferation, Migration, And Chemoresistance In 2d And 3d In Vitro And In Vivo Models, Molly Buckley

All ETDs from UAB

Mechanical forces imparted on an ovarian tumor have recently been shown to have a grave impact on cancer development, progression, metastasis, and chemoresistance. The forces present include compression throughout the tumor, intrinsic and extrinsic shear stresses from ascitic fluid present in the peritoneal cavity as well as blood flow through the tumor via leaky and disorganized vessels created through tumor angiogenesis, and tension at the tumor periphery because of the constantly growing mass. Studies of the signaling pathways impacted by these mechanical forces could give great insight into new therapeu-tic targets for ovarian cancer, however, these studies have been severely …

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History Of Allergy, Atopy, Infectious And Autoimmune Disease And Risk Of Multiple Myeloma, Tony B. Zbysinski Jan 2022

History Of Allergy, Atopy, Infectious And Autoimmune Disease And Risk Of Multiple Myeloma, Tony B. Zbysinski

All ETDs from UAB

Multiple Myeloma (MM) is a plasma cell malignancy, which is defined in part by antibodies and complexes of immunoglobulin (Ig) heavy and light chains (IgH and IgL). Previous associations of immune-stimulating conditions such as allergic, autoimmune, and infectious conditions and the risk of multiple myeloma (MM) are inconsistent. However, these studies were conducted in populations of European ancestry, leaving the possibility that these conditions may contribute to the excess risk of plasma cell proliferative disorders observed among Black Americans. Therefore, we assessed MGUS, a precursor condition to myeloma, and MM risk related to a history of allergy, atopy, infections and …

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Epigenetic Regulation By O-Glcnac Alters Anti-Fibrotic Gene Expression In Ipf Fibroblasts, Qiuming Wu Jan 2022

Epigenetic Regulation By O-Glcnac Alters Anti-Fibrotic Gene Expression In Ipf Fibroblasts, Qiuming Wu

All ETDs from UAB

Idiopathic pulmonary fibrosis (IPF) is an age-related chronic disease with a me-dian survival period of 3-4 years [1]. Although FDA has approved two drugs that may slow the disease process, there is no effective treatment [2]. IPF is characterized by the excessive deposition of collagen, which leads to deformation of alveolar structure, loss of lung function, and ultimately death [3]. Anti-fibrotic genes such as cyclooxygenase-2 (COX-2) and Heme Oxygenase 1 (HMOX-1) are usually suppressed in the pathogenesis of IPF [4-6], while the mechanisms responsible for the repression of anti-fibrotic genes in IPF are incompletely understood. More evidence has shown that …

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A Two-Tier Framework Based On Googlenet And Yolov3 Models For Tumor Detection In Mri, Farman Ali, Sadia Khan, Arbab Waseem Abbas, Babar Shah, Tariq Hussain, Dongho Song, Shaker Ei-Sappagh, Jaiteg Singh Jan 2022

A Two-Tier Framework Based On Googlenet And Yolov3 Models For Tumor Detection In Mri, Farman Ali, Sadia Khan, Arbab Waseem Abbas, Babar Shah, Tariq Hussain, Dongho Song, Shaker Ei-Sappagh, Jaiteg Singh

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Medical Image Analysis (MIA) is one of the active research areas in computer vision, where brain tumor detection is the most investigated domain among researchers due to its deadly nature. Brain tumor detection in magnetic resonance imaging (MRI) assists radiologists for better analysis about the exact size and location of the tumor. However, the existing systems may not efficiently classify the human brain tumors with significantly higher accuracies. In addition, smart and easily implementable approaches are unavailable in 2D and 3D medical images, which is the main problem in detecting the tumor. In this paper, we investigate various deep learning …

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A Gastrointestinal-Specific Antibiotic As An Experimental Treatment For Anxio-Depressive Disorders, Yuang-Tai Huang Jan 2022

A Gastrointestinal-Specific Antibiotic As An Experimental Treatment For Anxio-Depressive Disorders, Yuang-Tai Huang

All ETDs from UAB

Chronic stress is a predisposing factor for various disease states, including neuropsychiatric disorders, such as depression and anxiety [1]. Stress-related disorders have complicated multifactorial etiologies [2]. Advances in psychotherapeutic and psychotropic treatments have occurred, but anxiety and depressive disorders are still prevalent and remain a burden to our societies [3]. More than 30% of major depressive disorder patients fail to remission despite an FDAapproved medication [4]. Meanwhile, the contribution of microbiota-gut-brain axis signaling in both etiologies and treatment of stress-related disorders is increasingly being recognized [5]. More evidence has shown that the gut microbiota has the potential to alter the …

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Adaptive Functioning And Academic Achievement In Survivors Of Childhood Acute Lymphoblastic Leukemia: Associations With Executive Functioning And Socioeconomic Status, Victoria C. Seghatol-Eslami Jan 2022

Adaptive Functioning And Academic Achievement In Survivors Of Childhood Acute Lymphoblastic Leukemia: Associations With Executive Functioning And Socioeconomic Status, Victoria C. Seghatol-Eslami

All ETDs from UAB

This study examined the associations of functional outcomes (adaptive functioning and academic achievement) with executive functioning and neighborhood-specific variables (area deprivation and child opportunity) and individualized education plan (IEP) support in survivors of childhood acute lymphoblastic leukemia (ALL). From a retrospective database, 44 patients (38.6% female, 72.7% non-Hispanic White, ages 6-17) previously diagnosed with low-risk or standard-risk pre-B cell ALL and treated with chemotherapy-only were identified. Participants were evaluated on performance-based measures of executive functioning and academic achievement, and parent-ratings of executive and adaptive functioning. Within adaptive functioning, 45.5% of patients showed impairment (≥ 1 SD above the normative mean) …

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Representing Motherhood And Aging In Leonora Carrington's Bird Iconography, Claire Lesar Jan 2022

Representing Motherhood And Aging In Leonora Carrington's Bird Iconography, Claire Lesar

All ETDs from UAB

This thesis investigates the evolution of animal representations in paintings and sculptures of Leonora Carrington (1917-2011). Writings on her early Surrealist work often draw attention to Carrington’s embrace of the horse as a representation of self. However, over her extensive career, the menagerie of animals she draws from to depict herself evolves. I suggest that Carrington’s horse is more broadly significant as a narrative model that she adapts later in her career and that Carrington’s use of bird iconography emerges as a new form to symbolize other “rebirths” or periods of transition in her life, such as motherhood and aging. …

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"The Cloak Of Social Feeling": Alfred Adler's Gemeinschaftsgefuhl In Practice And Memory, Esteban T. Arnold Jan 2022

"The Cloak Of Social Feeling": Alfred Adler's Gemeinschaftsgefuhl In Practice And Memory, Esteban T. Arnold

All ETDs from UAB

This thesis provides a comprehensive overview of the evolution of Alfred Adler’s concept of Gemeinschaftsgefühl (community feeling), a simple yet potent idea that started in a Viennese café and expanded far beyond it. Ideas have lives beyond that of their authors, and this thesis argues that Alfred Adler’s idea of Gemeinschaftsgefühl was pressed into the service of various social and political agendas. Adler was privately a socialist, but he never wished to see Gemeinschaftsgefühl become a tool for this or any other movement. With an idealistic worldview, Adler sought to challenge and transform the pervading medical and psychotherapeutic conceptions of …

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Characterizing Occupational Status History And Assessing Occupational Status As A Social Determinant Of Health In The Deceased Organ Donor Population, Nicole F. Pelletier Jan 2022

Characterizing Occupational Status History And Assessing Occupational Status As A Social Determinant Of Health In The Deceased Organ Donor Population, Nicole F. Pelletier

All ETDs from UAB

Transplant physicians review clinical data ranging from laboratory values to substance use history and use prediction models combining these factors, along with previous recipient outcomes, to evaluate deceased organ donors for organ suitability. Factors such as social determinants of health (SDOH) are not currently included in prediction models, despite evidence of relationships between SDOH and health outcomes in the general population. Occupational status is a SDOH routinely collected at the time of donation and stored in DonorNet, but not yet characterized in the deceased donor population. Despite well-documented relationships between occupational status and health outcomes in the general population, these …

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Adolescent Alcohol, Tobacco, And Marijuana Use And Dma Methylation In Young Adulthood, Kristina Brooke Mcmahan Jan 2022

Adolescent Alcohol, Tobacco, And Marijuana Use And Dma Methylation In Young Adulthood, Kristina Brooke Mcmahan

All ETDs from UAB

Substance use, including the use of tobacco, alcohol, marijuana, and other drugs, is most likely to begin during adolescence or emerging adulthood. Substance use during these developmental periods has been linked with a number of negative physical, mental, and cognitive health outcomes. Some of these long-term negative effects of substance use during adolescence and emerging adulthood may be explained by epigenetic changes through a process called DNA methylation. However, much of the research on substance use and DNA methylation has focused on prenatal drug exposure and its relationship to differential methylation profiles during childhood and young adulthood. By contrast, little …

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Grainyhead-Like 2 (Grhl2) Has Anti-Oncogenic Potential In Glioblastoma, Rachel M. Carnes Jan 2022

Grainyhead-Like 2 (Grhl2) Has Anti-Oncogenic Potential In Glioblastoma, Rachel M. Carnes

All ETDs from UAB

Grainyhead-like 2 (GRHL2) is a complex transcription factor associated with roles in both development and cancer. In development, GRHL2 suppresses a series of genes associated with the mesenchymal phenotype, while actively promoting the expression of genes associated with the epithelial phenotype. Due to this GRHL2 is considered a main gatekeeper of the epithelial to mesenchymal transition (EMT), playing a crucial role in epithelial morphogenesis and neural tube closure. These basic traits for GRHL2 have also been found to be similar in cancer. GRHL2 has multi-faceted functions in cancer, in which it can be considered either an oncogene or a tumor …

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The Role Of Dock3 In Normal Skeletal Muscle Function And Metabolism, Adrienne Samani Jan 2022

The Role Of Dock3 In Normal Skeletal Muscle Function And Metabolism, Adrienne Samani

All ETDs from UAB

DOCK (dedicator of cytokinesis) are proteins of an 11-member family of typical guanine exchange factors (GEFs) expressed almost exclusively in the brain and spinal cord. Human pathogenic DOCK3 variants have been identified to cause debilitating neuromuscular phenotypes such as muscle hypotonia, ataxia, and intellectual disability. Our lab identified DOCK3 as being strongly upregulated in Duchene muscular dystrophy (DMD), specifically in the skeletal muscles of DMD patient and mouse skeletal muscles. Global Dock3 KO mice on the dystrophin-deficient background exacerbated skeletal muscle and cardiac phenotypes. Similarly, DOCK3 KO mice appeared to have poor muscle architecture, locomotive activity, reduced myogenic fusion, impaired …

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The Requirement Of Transcriptional Lim Complex Co-Regulators For Pancreatic Endocrine Cell Development And Function, Eliana Davi Toren Jan 2022

The Requirement Of Transcriptional Lim Complex Co-Regulators For Pancreatic Endocrine Cell Development And Function, Eliana Davi Toren

All ETDs from UAB

The prevalence and tremendous impact of diabetes mellitus has made glucose regulation of the insulin-producing -cell and surrounding pancreatic islet of Langerhans a center of public and research interests alike. A comprehensive understanding of these hormone-producing cells begins with their developmental origins. What are the genetic cues and participants in the tightly orchestrated process of their formation? Investigating the earliest determinants of islet-cell fate not only allows us to deeply understand mature - and islet-cell function, but also produces a data-driven template for how these cells can be reproduced in future stem-cell based diabetes therapies. LIM transcriptional complexes are indispensable …

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The Role Of Alternative Payment Models In Pharmaceutical Services And Outcomes, Matthew G. Parker Jan 2022

The Role Of Alternative Payment Models In Pharmaceutical Services And Outcomes, Matthew G. Parker

All ETDs from UAB

A persistent challenge within the healthcare sector is balancing cost containment for health services and the quality of care associated with these services. This challenge has reinvigorated interest in alternative payment models (i.e., risk-sharing, shared savings, capitation), arrangements between payers and healthcare providers that structure reimbursement for services based on health outcomes. Although much research has assessed the association between these payment models and financial outcomes for medical services, there is a paucity of research that has likewise assessed pharmaceutical outcomes (i.e., electronic prescribing, evidence-based prescribing, medication adherence). The papers comprising this dissertation contribute to this limited body of research …

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Examining Family Health Through Family-Centered Care Within An Organizational Context, Bria Kathryn Morgan Jan 2022

Examining Family Health Through Family-Centered Care Within An Organizational Context, Bria Kathryn Morgan

All ETDs from UAB

Introduction: Family health is characterized as a multi-dimensional process that is shaped by a number of social determinants. Similar to individual health, various domains work in conjunction and intersect to produce family health. Family-centered care is one of the many ways that healthcare providers can support health, however, little is known about if and how it is beneficial for family health. Considering the relevance of an organizational context, this study seeks to understand the delivery of care within an organization and providers’ perceptions of family-centered care. Data/Methods: Using the case of the Ronald McDonald House, this study integrates qualitative content …

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In Vitro And In Vivo Antidiabetic Potential Of Monoterpenoids: An Update, Lina T. Al Kury, Aya Abdoh, Kamel Ikbariah, Bassem Sadek, Mohamed Mahgoub Jan 2022

In Vitro And In Vivo Antidiabetic Potential Of Monoterpenoids: An Update, Lina T. Al Kury, Aya Abdoh, Kamel Ikbariah, Bassem Sadek, Mohamed Mahgoub

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Diabetes mellitus (DM) is a chronic metabolic condition characterized by persistent hyper-glycemia due to insufficient insulin levels or insulin resistance. Despite the availability of several oral and injectable hypoglycemic agents, their use is associated with a wide range of side effects. Monoterpenes are compounds extracted from different plants including herbs, vegetables, and fruits and they contribute to their aroma and flavor. Based on their chemical structure, monoterpenes are classified into acyclic, monocyclic, and bicyclic monoterpenes. They have been found to exhibit numerous biological and medicinal effects such as antipruritic, antioxidant, anti-inflammatory, and analgesic activities. Therefore, monoterpenes emerged as promising molecules …

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Barriers And Facilitators Of Availability Of Hydroxyurea For Sickle Cell Disease In Tanzania; A Qualitative Study Of Pharmaceutical Manufacturers, Importers, And Regulators, Hamu J. Mlyuka, Manase Kilonzi, Ritah F. Mutagonda, Lulu Chirande, Wigilya P. Mikomangwa, David T. Myemba, Godfrey Sambayi, Dorkasi L. Mwakawanga, Joyce Ndunguru, Paschal Ruggajo Jan 2022

Barriers And Facilitators Of Availability Of Hydroxyurea For Sickle Cell Disease In Tanzania; A Qualitative Study Of Pharmaceutical Manufacturers, Importers, And Regulators, Hamu J. Mlyuka, Manase Kilonzi, Ritah F. Mutagonda, Lulu Chirande, Wigilya P. Mikomangwa, David T. Myemba, Godfrey Sambayi, Dorkasi L. Mwakawanga, Joyce Ndunguru, Paschal Ruggajo

Internal Medicine, East Africa

Despite three decades of proven safety and effectiveness of hydroxyurea in modifying sickle cell disease (SCD), its accessibility is limited in Sub-Saharan Africa, which shares 75% of the world’s SCD burden. Therefore, it is time to explore the barriers and facilitators for manufacturing and importation of hydroxyurea for SCD in Tanzania. This was qualitative research that employed a case study approach. Purposive sampling followed by an in-depth interview (IDI) using a semi-structured questionnaire aspired by data saturation enabled us to gather data from 10 participants. The study participants were people with more than three years of experience in pharmaceuticals importation, …

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Nutrition Practices And Body Composition In Infants Born Preterm, Maggie Jerome Jan 2022

Nutrition Practices And Body Composition In Infants Born Preterm, Maggie Jerome

All ETDs from UAB

Adequate nutrition and optimal growth are critical goals of clinical care for premature infants in the NICU due to rapid brain growth and development that occur during this time. Emerging evidence suggests that body composition in preterm infants is predictive of neurodevelopmental and metabolic outcomes later in childhood. The objective of this dissertation is to investigate factors affecting premature infant growth and body composition, including high enteral protein supplementation, nutrition during the first two weeks of life, and race of infants born at 22-32 weeks gestational age admitted to the UAB NICU. In a pilot study, 56 preterm infants were …

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Evaluation Of A Living Shoreline Technique On A Southeastern United States Reservoir, Eric V. Muth Jan 2022

Evaluation Of A Living Shoreline Technique On A Southeastern United States Reservoir, Eric V. Muth

All ETDs from UAB

The impoundment of rivers in the southeastern United States has led to the creation of reservoirs that have seen the riparian zone become heavily developed with residential real estate. As the hybrid river/lake systems started forming new shorelines, property owners reacted by attempting to reduce their losses. This has been done in a variety of ways, with the majority falling into the bulkhead category. The use of vertical hard armament has resulted in a loss of ecological function and an increase in erosion of the lakebed at the toe or escarpment. In response to this, the idea was proposed by …

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Molecular Imaging Of Cancer For Detection And Monitoring Of Response To Combination Therapy, Tiara S. Napier Jan 2022

Molecular Imaging Of Cancer For Detection And Monitoring Of Response To Combination Therapy, Tiara S. Napier

All ETDs from UAB

Imaging is a primary component of cancer care and aids in diagnosing, response assessment, and monitoring. Molecular imaging techniques provide visualization of unique tumor biology that can be used to personalize treatment. Key features of an effective biomarker are sensitivity, specificity, and ability to provide clinical value beyond that of other types of information already available at the time of diagnosis. For particularly heterogeneous cancer subtypes, such as glioblastoma (GBM) and triple negative breast cancer (TNBC), reliable biomarkers can be challenging to identify and there are few tar-getable receptors for therapy. Our findings demonstrate that quantifying tumor EGFR (panitumumab-IRDye800CW), granzyme …

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Restoring The Sphingolipid Balance In Glioblastoma, Cyntanna C. Hawkins Jan 2022

Restoring The Sphingolipid Balance In Glioblastoma, Cyntanna C. Hawkins

All ETDs from UAB

Glioblastoma (GBM) is a highly aggressive brain tumor with a median survival of 15 months even with standard of care—surgical resection, radiotherapy, and chemotherapy. Two of the key characteristics contributing to this malignancy are its highly invasive phenotype and resistance to the chemotherapy, temozolomide (TMZ). We, and others, have identified the sphingolipid balance as a driver of these phenotypes with dysregulated sphingolipid metabolism seen in GBM patient samples. The ceramidases, specifically acid ceramidase (ASAH1), mediate the balance between ceramides and sphingosine-1-phosphate (S1P). ASAH1 breaks down ceramides ultimately forming S1P. While ceramides induce cell death, S1P promotes migration and cell survival. …

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