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Articles 61 - 90 of 8642
Full-Text Articles in Medicine and Health Sciences
Transcriptional Signatures Of Rapid Protection From Sudan Virus Infection By A Single Dose Of A Vesicular Stomatitis Virus-Based Vaccine, Brianna M. Doratt, Sheridan B. Wagner, Delphine C. Malherbe, Gregory T. Smith, Andrea Marzi, Ilhem Messaoudi
Transcriptional Signatures Of Rapid Protection From Sudan Virus Infection By A Single Dose Of A Vesicular Stomatitis Virus-Based Vaccine, Brianna M. Doratt, Sheridan B. Wagner, Delphine C. Malherbe, Gregory T. Smith, Andrea Marzi, Ilhem Messaoudi
Microbiology, Immunology, and Molecular Genetics Faculty Publications
Sudan virus (SUDV) has caused multiple outbreaks of human disease with case fatality rates ranging from 41 to 100%. We have previously shown that a single vaccination with a recombinant vesicular stomatitis virus-based vaccine expressing the SUDV-Gulu glycoprotein (VSV-SUDV) prevented clinical and fatal disease from lethal SUDV challenge in cynomolgus macaques. With the high probability of future outbreaks, it is critical to determine the molecular mechanisms of VSV-SUDV-mediated protection and the ability to impart rapid protection against SUDV infection. In this study, RNA from whole blood samples obtained from nine cynomolgus macaques that were challenged with SUDV-Gulu post-vaccination with either …
Characterizing Immune Perturbations In Peripheral Blood Following The East Palestine, Ohio Train Derailment, Sheridan B. Wagner, Hami Hemati, Siva Gandhapudi, Timothy J. Hilbert, Candace J. Brancato, Erin N. Haynes, Ilhem Messaoudi
Characterizing Immune Perturbations In Peripheral Blood Following The East Palestine, Ohio Train Derailment, Sheridan B. Wagner, Hami Hemati, Siva Gandhapudi, Timothy J. Hilbert, Candace J. Brancato, Erin N. Haynes, Ilhem Messaoudi
Microbiology, Immunology, and Molecular Genetics Faculty Publications
Background: The East Palestine, Ohio, train derailment on February 3rd, 2023, resulted in the exposure of residents and the surrounding area to numerous hazardous chemicals, which included known acute irritants and human carcinogens. Despite evacuation and cleanup, both residents and responders reported high occurrences of symptoms associated with exposure in the months following, such as eye, skin, and respiratory irritation, headaches, and fatigue. The long-term health consequences for residents remain uncertain.
Objective: To assess the potential for immune perturbations resulting from the exposure, we performed a broad investigation of circulating immune cells and mediators from residents of East Palestine, OH, …
Combinatorial Immunotherapy Drives Exhaustion In Tumor Antigen–Specific Cd8+ T Cells Within The Mouse Renal Tumor Microenvironment, Holly R. Stephens, Elizabeth Elkins, Jing Li, Zoey N. Swalley, Henry Nnaemeka Ogbonna, Pia Muri, Zachary Roberts, Francesca R. Dempsey, Md Akkas Ali, Md Hasanul Banna Siam, Richard Kirkman, Jianqing Zhang, Sunil Sudarshan, Daniel J. Tyrrell, Hubert M. Tse, Daniel L. Smith Jr, Lyse A. Norian
Combinatorial Immunotherapy Drives Exhaustion In Tumor Antigen–Specific Cd8+ T Cells Within The Mouse Renal Tumor Microenvironment, Holly R. Stephens, Elizabeth Elkins, Jing Li, Zoey N. Swalley, Henry Nnaemeka Ogbonna, Pia Muri, Zachary Roberts, Francesca R. Dempsey, Md Akkas Ali, Md Hasanul Banna Siam, Richard Kirkman, Jianqing Zhang, Sunil Sudarshan, Daniel J. Tyrrell, Hubert M. Tse, Daniel L. Smith Jr, Lyse A. Norian
Microbiology, Immunology, and Molecular Genetics Faculty Publications
Immunotherapies have greatly improved outcomes for patients with renal cell carcinoma (RCC), yet response rates remain suboptimal and the factors promoting therapy resistance versus sensitivity are incompletely understood. Currently, no preclinical model of orthotopic renal cancer exists that permits evaluation of tumor antigen–specific (TAS) CD8+ tumor-infiltrating lymphocytes (TILs). To address this deficiency, we developed a mouse renal cancer model that permits tracking of adoptively transferred TAS CD8+ T cells. Renca-LUC tumor cells were transduced to express tumor ERK (tERK), a model antigen expressing a one-amino-acid change from wild-type ERK, resulting in recognition by tERK/H-2Kd-specific DUC Thy1.1 …
The Functional Significance Of Plk1 Phosphorylation Of Nrf2 In Prostate Cancer Progression, Maria Nur
The Functional Significance Of Plk1 Phosphorylation Of Nrf2 In Prostate Cancer Progression, Maria Nur
Theses and Dissertations--Toxicology and Cancer Biology
Prostate cancer progression and therapeutic resistance are closely linked to alterations in redox homeostasis and cell cycle regulation. Nuclear factor erythroid 2–related factor 2 (NRF2) is a master regulator of antioxidant responses, yet the mechanisms integrating cell cycle signaling with NRF2 activity in prostate cancer remain poorly defined. In this study, we identify polo‑like kinase 1 (PLK1) as a novel regulator of NRF2 through direct phosphorylation at serine 253 (S253). Using bioinformatic prediction, mass spectrometry, in vitro kinase assays, and cell‑based analyses, we demonstrate that PLK1 phosphorylates NRF2 at S253 in a cell cycle–dependent manner, with maximal phosphorylation during mitosis. …
Safety And Efficacy Findings From A Phase Ib/Ii Study Of Asp-1929 Photoimmunotherapy With Pembrolizumab In Recurrent And/Or Metastatic Head And Neck Squamous Cell Carcinoma, David M. Cognetti, Joseph M. Curry, Jennifer Johnson, Michael Kwon, Shirley Y. Su, Francisco Civantos, Coral Olazagasti, Joseph Valentino, Susanne Arnold, R. Bryan Bell, Michael K. Gibson, Kyle Mannion, Kathryn M. Van Abel, Katharine A. Price, Haiying Dong, Amy H. Thorne, Toshiaki Suzuki, Ann M. Gillenwater
Safety And Efficacy Findings From A Phase Ib/Ii Study Of Asp-1929 Photoimmunotherapy With Pembrolizumab In Recurrent And/Or Metastatic Head And Neck Squamous Cell Carcinoma, David M. Cognetti, Joseph M. Curry, Jennifer Johnson, Michael Kwon, Shirley Y. Su, Francisco Civantos, Coral Olazagasti, Joseph Valentino, Susanne Arnold, R. Bryan Bell, Michael K. Gibson, Kyle Mannion, Kathryn M. Van Abel, Katharine A. Price, Haiying Dong, Amy H. Thorne, Toshiaki Suzuki, Ann M. Gillenwater
Otolaryngology--Head & Neck Surgery Faculty Publications
Background: ASP-1929 photoimmunotherapy—cetuximab conjugated to IRDye 700DX and red light (690 nm) for localized drug activation—results in rapid, selective cell killing.
Methods: This phase Ib/II open-label study evaluated ASP-1929 photoimmunotherapy plus pembrolizumab in patients with recurrent/metastatic HNSCC (≥ 1 accessible lesion, PD-L1 combined positive score ≥ 1, ineligible for standard locoregional ther- apy). Primary objectives were safety/tolerability and objective response rate (ORR). Secondary objectives included overall sur- vival (OS) and progression-free survival (PFS).
Results: Eighteen patients (median age 63 years, 74% male) comprised the photoimmunotherapy-evaluable population. The confirmed ORR was 27.8% (95% CI 9.7–53.5); four of five responders had complete …
Assessment Of Hearing Health Among Adults In Rural Health Clinics, Mit A. Patel, David Adkins, Laura Bellnier, Anthony Mahairas, Matthew L. Bush
Assessment Of Hearing Health Among Adults In Rural Health Clinics, Mit A. Patel, David Adkins, Laura Bellnier, Anthony Mahairas, Matthew L. Bush
Otolaryngology--Head & Neck Surgery Faculty Publications
Objective: Hearing loss (HL) negatively impacts all aspects of health, yet poor access to hearing healthcare (HHC) among adults is a pervasive public health problem. The inaccessibility of HHC is amplified in rural adults. Rural health clinics (RHC) are a critical healthcare system tasked with improving health in rural communities and the objective of this study is to assess the prevalence of HL and the utilization of HHC within RHCs.
Methods: Using cross-sectional study design, adults were recruited from 10 RHC throughout rural Kentucky, mostly within Appalachia. The primary outcomes were (1) presence of HL on screening and (2) history …
Exploring Tonal Focus: Qualitative Perspectives And Acoustic Correlates In Slps And Singers, Lily C. Carpenter
Exploring Tonal Focus: Qualitative Perspectives And Acoustic Correlates In Slps And Singers, Lily C. Carpenter
Theses and Dissertations--Communication Sciences and Disorders
Tonal focus is a complex construct that has variable definitions and interpretations across professions and within existing literature. Although tonal focus is widely described both clinically and pedagogically, both fields differ in their perspectives and goals related to the concept. This study aims to understand singers’ and speech language pathologists’ (SLP) conceptual perception and acoustic demonstration of tonal focus. Eleven SLPs and six singers were recruited to participate in the study. Participants completed an interview with the primary investigator and were recorded producing forward, neutral, and backward tonal focus in various contexts. Acoustic and qualitative analysis indicated that tonal focus …
Characteristics Of Pulmonary Vs. Extrapulmonary Tuberculosis Cases In Kentucky From 2020 To 2024, Mariam M. Alkhairat
Characteristics Of Pulmonary Vs. Extrapulmonary Tuberculosis Cases In Kentucky From 2020 To 2024, Mariam M. Alkhairat
Theses and Dissertations--Public Health (M.P.H. & Dr.P.H.)
Objective: Tuberculosis (TB) remains an important public health concern in the United States, especially among people experiencing social and clinical vulnerabilities. Extrapulmonary TB, which occurs outside of the lungs, can be harder to detect and diagnose than pulmonary TB. This study aimed to describe the demographic and clinical characteristics of people with active TB in Kentucky and to identify factors associated with extrapulmonary TB.
Methods: Secondary surveillance data were obtained from the Kentucky Department for Public Health (KDPH) using the National Tuberculosis Surveillance System (NTSS). The study sample included 301 confirmed active TB cases reported in Kentucky. Descriptive statistics were …
In Vivo Telemetry To Record Long-Term Cardiovascular Parameters, Temperature, And Activity In Spinal Cord Injury Rat Models, Sajeev Kaur, Anna M. Baur, Jillian A. Condrey, Dorottya P. Gal, Samir P. Patel, John C. Gensel
In Vivo Telemetry To Record Long-Term Cardiovascular Parameters, Temperature, And Activity In Spinal Cord Injury Rat Models, Sajeev Kaur, Anna M. Baur, Jillian A. Condrey, Dorottya P. Gal, Samir P. Patel, John C. Gensel
Spinal Cord and Brain Injury Research Center Faculty Publications
Higher-level spinal cord injury (SCI) above thoracic level 6 (T6) disrupts autonomic function and contributes to secondary complications, including fluctuations in blood pressure, heart rate, and temperature. In rats, the placement of telemetric implants in the descending aorta offers a robust methodology for assessing various cardiovascular parameters, such as systolic and diastolic pressure, mean arterial pressure, and heart rate. Core body temperature and animal activity can also be recorded following telemetric implant placement. A rat with a telemetric implant is kept on the receiver plate connected to a computer system for recording various parameters. Continuous long-term recordings at defined time …
Granulomatous Cellular Signatures In Nontuberculous And Tuberculous Mycobacterial Infections, Brianna M. Doratt, Ethan G. Napier, Mahdi Eskandarian Boroujeni, Sarah Douglas, Michael H. Davies, Luiz Bermudez, Eliot Spindel, Erin F. Mccaffrey, Ilhem Messaoudi
Granulomatous Cellular Signatures In Nontuberculous And Tuberculous Mycobacterial Infections, Brianna M. Doratt, Ethan G. Napier, Mahdi Eskandarian Boroujeni, Sarah Douglas, Michael H. Davies, Luiz Bermudez, Eliot Spindel, Erin F. Mccaffrey, Ilhem Messaoudi
Microbiology, Immunology, and Molecular Genetics Faculty Publications
Mycobacterium tuberculosis (Mtb) and nontuberculous mycobacteria (NTM) are acid-fast bacilli that trigger granuloma formation, a hallmark immune response aimed at containing infection. While the biology of Mtb granulomas has been widely investigated, far less is known about granulomas caused by NTM infection, despite the increasing prevalence and clinical challenge of NTM cases worldwide. Because granulomas influence infection control, pathology, and treatment response, understanding their cellular organization and signaling is critical to improving therapeutic strategies. Therefore, we characterized granulomas formed following infection of rhesus macaques with Mycobacterium avium subsp. hominissuis (MAH) and compared them to granulomas from cynomolgus macaques infected with …
Glycoprotein-Specific Transcriptional Response Contributes To Differential Vaccine Protection Against Lethal Ebola Virus Infection, Sheridan B. Wagner, Delphine C. Malherbe, Ethan G. Napier, Andrea Marzi, Ilhem Messaoudi
Glycoprotein-Specific Transcriptional Response Contributes To Differential Vaccine Protection Against Lethal Ebola Virus Infection, Sheridan B. Wagner, Delphine C. Malherbe, Ethan G. Napier, Andrea Marzi, Ilhem Messaoudi
Microbiology, Immunology, and Molecular Genetics Faculty Publications
Since the West African Ebola virus (EBOV) epidemic in 2014-2016, recurrent outbreaks of the EBOV-Makona variant have been driven by recrudescence and human-to-human transmission emphasizing the need for effective vaccination strategies. A live-attenuated recombinant vesicular stomatitis virus (VSV)-based vaccine expressing the EBOV-Kikwit variant glycoprotein (VSV-Kik) received FDA approval in December 2019 and provides complete, rapid protection against EBOV-Makona as early as 7 days post-vaccination (DPV). During the 2018-2020 Ebola outbreak, the VSV-Kik vaccine, known as ERVEBO, was administered to lower-risk individuals at a 5-fold dose reduction of the standard 2 × 10 7 PFU to provide broader population protection. Identification …
Preventing Teen Pregnancy Through Expanded Contraceptive Access In Mccreary County, Kentucky, Dacey B. Chitwood
Preventing Teen Pregnancy Through Expanded Contraceptive Access In Mccreary County, Kentucky, Dacey B. Chitwood
Theses and Dissertations--Public Health (M.P.H. & Dr.P.H.)
This capstone project proposes a school-based Condom Availability Program to reduce teen pregnancy risk by expanding discreet contraceptive access for adolescents in McCreary County, Kentucky. Teen pregnancy remains a persistent public health concern in rural communities where stigma, privacy concerns, transportation barriers, and limited healthcare access can prevent adolescents from obtaining reproductive health resources. McCreary County faces elevated teen birth rates, socioeconomic disadvantage, and limited maternal healthcare infrastructure, making teen pregnancy prevention an important local priority. The proposed program would place free latex and non-latex condoms in student restrooms at McCreary Central High School, with QR-code-linked information connecting students to …
The Impact Of Food Insecurity And Associated Variables On Colon Cancer In Kentucky: An Ecologic Study, Claire E. Lynch
The Impact Of Food Insecurity And Associated Variables On Colon Cancer In Kentucky: An Ecologic Study, Claire E. Lynch
Theses and Dissertations--Public Health (M.P.H. & Dr.P.H.)
Objective: Given colorectal cancer incidence rates are increasing, especially in socioeconomic disadvantaged areas, this study aims to determine if there is an association between specific socioeconomic variables, such as food insecurity, and colon cancer at the county-level in Kentucky.
Methods: Colorectal cancer age-adjusted incidence rates at the county-level were collected from the Kentucky Cancer Registry. Conty-level data was collected from County Health Ranking, The U.S Census Bureau, National Institute on Minority Health and Health Disparities and the Behavioral Risk Factor Surveillance System from 2019 to 2023. R was used to run statical analyses such as a linear regression and a …
Hepatitis C Virus Transmission Among People Who Inject Drugs In Rural United States: Mathematical Modeling Study Using Stochastic Agent-Based Network Simulation, Lin Zhu, Jennifer R. Havens, Abby E. Rudolph, April M. Young, Golnaz Eftekhari Yazdi, William W. Thompson, Liesl M. Hagan, Liisa M. Randall, Jianing Wang, Rebecca Earnest, Shayla Nolen, Benjamin P. Linas, Joshua A. Salomon
Hepatitis C Virus Transmission Among People Who Inject Drugs In Rural United States: Mathematical Modeling Study Using Stochastic Agent-Based Network Simulation, Lin Zhu, Jennifer R. Havens, Abby E. Rudolph, April M. Young, Golnaz Eftekhari Yazdi, William W. Thompson, Liesl M. Hagan, Liisa M. Randall, Jianing Wang, Rebecca Earnest, Shayla Nolen, Benjamin P. Linas, Joshua A. Salomon
Center on Drug and Alcohol Research Faculty Publications
People who inject drugs (PWID) account for the majority of hepatitis C virus (HCV) infections in the United States. The injection-equipment-sharing network likely plays an important role in shaping the dynamics of HCV transmission. Recognizing the emerging HCV epidemic in rural communities, we developed an agent-based network simulation model of HCV transmission via injection equipment sharing and used data on rural PWID networks to inform model parameterization and calibration. We then simulated an array of networks that varied key network properties to understand their impact on the magnitude and distribution of HCV incidence. The results show substantial heterogeneity in HCV …
Test-Retest Reliability And Validity Of The Gas Exchange Threshold, Erik Ryan Snell Mr.
Test-Retest Reliability And Validity Of The Gas Exchange Threshold, Erik Ryan Snell Mr.
Theses and Dissertations--Kinesiology and Health Promotion
Theoretically, the gas exchange threshold (GET) demarcates the moderate and heavy intensity domains, whereby exercise performed at and below the GET results in a change in oxygen consumption ([ΔVO2] ≤ 200 mL), and exercise above the GET results in a slow component (ΔVO2 > 200 mL). This study examined the reliability and validity of the GET. 14 subjects performed two maximal graded exercise tests (GXTs) to determine the GET and its reliability. The minimal difference (MD = 21W) was applied to determine the GET above (GET+MD) and below (GET-MD) power outputs for 30 min …
Biomechanical Effects Of Exercise-Based Interventions In Chronic Nonspecific Low Back Pain: A Systematic Review And Meta-Analysis, Lara De Vecchi Machado
Biomechanical Effects Of Exercise-Based Interventions In Chronic Nonspecific Low Back Pain: A Systematic Review And Meta-Analysis, Lara De Vecchi Machado
Theses and Dissertations--Kinesiology and Health Promotion
Chronic nonspecific low back pain (CNLBP) is the leading cause of years lived with disability worldwide and represents a complex, multifactorial, and heterogeneous condition. It is characterized by substantial interindividual variability in muscle activation patterns, lumbo-pelvic coordination, and movement strategies. Although exercise is widely recommended as a first-line intervention and its clinical benefits are well established, the biomechanical mechanisms underlying functional improvement remain fragmented in the literature and are rarely synthesized quantitatively.
This dissertation conducted a systematic review with meta-analysis to investigate the biomechanical effects of exercise-based interventions in individuals with CNLBP. A total of 39 studies were included and …
A Specification-Driven Framework For Self-Supervised Learning In Specialized Vision Domains, Mahmut S. Gokmen
A Specification-Driven Framework For Self-Supervised Learning In Specialized Vision Domains, Mahmut S. Gokmen
Theses and Dissertations--Computer Science
Self-supervised learning (SSL) has emerged as a principled approach to visual representation learning that derives supervisory signal directly from unlabeled data, enabling foundation models to be trained at scale without manual annotation. Deployments in medical imaging and biometric recognition have demonstrated the potential of this paradigm, yet the assumptions that make SSL effective on natural image benchmarks fail systematically in specialized domains. Generic SSL pipelines encode a tacit assumption that the most informative correspondence is spatial proximity within a single acquisition. In specialized domains this assumption breaks at the level of the data-generating process: the signal that carries domain-specific information …
From Mandate To Meaning: Designing Implementation Supports For Organizational Readiness In Behavioral Health Service Planning, Lauren K. Mergen
From Mandate To Meaning: Designing Implementation Supports For Organizational Readiness In Behavioral Health Service Planning, Lauren K. Mergen
Theses and Dissertations--Education Sciences
Behavioral health agencies often struggle to translate the Transformational Collaborative Outcomes Management (TCOM) framework into practice when implementation is externally mandated. This study examined how educational leaders can support meaningful use of TCOM tools under a Midwestern state’s October 2024 requirement that behavioral health providers use the state Child and Adolescent Needs and Strengths assessment in service planning.
Using a Mixed Methods Action Research design, the study progressed through six phases: Diagnosis, Reconnaissance, Planning, Acting, Evaluation, and Monitoring. The Diagnosis Phase identified a knowledge-to-practice gap and weaknesses in implementation support infrastructure. Practitioner surveys administered immediately after training and six months …
Metabolism As A Regulator Of Sleep And Cortical Activity In Health And Alzheimer’S Disease, Nicholas J. Constantino
Metabolism As A Regulator Of Sleep And Cortical Activity In Health And Alzheimer’S Disease, Nicholas J. Constantino
Theses and Dissertations--Neuroscience
Metabolic flexibility is essential for maintaining normal physiological function, enabling an organism to sense, flux, utilize, and switch fuel sources in response to changing energetic availability, demand, and cellular needs. Energetic demands are state-dependent, with wake and sleep exhibiting distinct metabolic profiles. Sleep is highly sensitive to changes in metabolism and requires metabolic flexibility to both transition into and maintain sleep stability. Alzheimer’s disease (AD) is increasingly recognized as a disease of altered metabolism yet is often framed as a disease of energetic failure. We instead define AD as a disease of metabolic inflexibility, characterized not by insufficient energy availability, …
Environmental Predictors Of Human Lyme Disease Incidence Across Appalachian Counties In Kentucky, Virginia, And West Virginia, 2000-2019, Karlie D. Rennison
Environmental Predictors Of Human Lyme Disease Incidence Across Appalachian Counties In Kentucky, Virginia, And West Virginia, 2000-2019, Karlie D. Rennison
Theses and Dissertations--Epidemiology and Biostatistics
This ecological study examined county-level environmental, landscape, and host-related predictors of Lyme disease incidence across Kentucky, Virginia, and West Virginia from 2000-2019. Lyme disease is an emerging public health concern in the Appalachian region, where geographic expansion and shifting ecological conditions may influence disease risk.
Lyme disease case rates (per 10,000 population) were analyzed in relation to climate variables, land cover metrics, host density measures, and rurality using publicly available data sources. Descriptive and regression analyses were conducted to evaluate associations between candidate predictors and disease incidence.
Substantial geographic variation in Lyme disease incidence was observed, with higher case rates …
The Immune Hangover: Understanding The Influence Of Alcohol Use, Abstinence, And Post-Abstinence Drinking On Monocyte Plasticity, Madison B. Blanton
The Immune Hangover: Understanding The Influence Of Alcohol Use, Abstinence, And Post-Abstinence Drinking On Monocyte Plasticity, Madison B. Blanton
Theses and Dissertations--Pharmacy
Alcohol consumption is widespread in the United States, with 80% of individuals aged 12 and older reporting alcohol use and 1-in-4 engaging in risky drinking behaviors. Alcohol misuse heightens susceptibility to infections and delays wound healing, indicating a disrupted immune system. Previous studies show alcohol rewires immune cells, especially monocytes and macrophages, which play critical roles in tissue homeostasis and host defense.
Using a rhesus macaque model of ethanol self-administration, we demonstrate that after 6-months of drinking, monocytes exhibit decreased cytokine production and significant transcriptomic changes, indicating a hypo-inflammatory state. In contrast, 12-months of chronic alcohol use induces hyperinflammatory responses, …
Investigating The Potential Role Of Toxoplasma Gondii In The Development Of Equine Protozoal Myeloencephalitis, Brooklyn Nicole Shirah
Investigating The Potential Role Of Toxoplasma Gondii In The Development Of Equine Protozoal Myeloencephalitis, Brooklyn Nicole Shirah
Theses and Dissertations--Veterinary Science
Equine protozoal myeloencephalitis (EPM) is a neurologic disease of horses prevalent in the Americas, caused by the coccidian parasites Sarcocystis neurona and Neospora hughesi. Toxoplasma gondii is a related parasite that infects nearly all warm-blooded animals, including horses. Prior studies show conflicting results on whether T. gondii contributes to EPM, in part because no validated T. gondii serologic assay exists in horses. This study developed a recombinant TgSAG1 ELISA and confirmatory Western blot. These assays evaluated T. gondii seropositivity in 789 serum samples from healthy and neurologic horses across multiple geographic regions and examined 31 paired serum:CSF samples for …
Molecular Mechanisms And Metabolic Consequences Of Glucocorticoid Resistance, Genesee J. Martinez
Molecular Mechanisms And Metabolic Consequences Of Glucocorticoid Resistance, Genesee J. Martinez
Theses and Dissertations--Pharmacology and Nutritional Sciences
Glucocorticoids are vital steroid hormones that govern metabolism, stress responses, and immune functions through intricate, tissue-specific mechanisms, both genomic and non-genomic. These hormones bind to the glucocorticoid receptor (GR), which then acts as a transcription factor to modulate gene expression. Chronic elevation of glucocorticoid levels may lead to glucocorticoid resistance, resulting in adiposity, inflammation, and insulin resistance, thereby adversely affecting multiple metabolic tissues. Whether produced endogenously or administered exogenously, excessive, chronic glucocorticoid concentrations impair glucocorticoid signaling. Although there are two primary isoforms of the receptor, GR⍺ and GRβ, only GR⍺ interacts with glucocorticoids.Through the research conducted in this dissertation, we …
Expanding The Role Of Muscle Stem Cell Fusion In Muscle Under Hypertrophic Stimulus, Jensen Goh Zhong Sheng
Expanding The Role Of Muscle Stem Cell Fusion In Muscle Under Hypertrophic Stimulus, Jensen Goh Zhong Sheng
Theses and Dissertations--Physiology
Muscle stem cells (MuSCs) are a unique stem cell population that can activate in response to both injury and growth stimuli. Studies on muscle regeneration have shown MuSC activation follows a uniform progression through proliferation, differentiation, and fusion. Therefore, to determine whether MuSC replication is a prerequisite for differentiation under hypertrophic stimulus, I used a lineage-tracking mouse model (Pax7rtTA; TRE-H2B-GFP) to label MuSC nuclei and simultaneously tracked DNA synthesis via EdU incorporation. This dual-labeling approach allowed us to not only distinguish MuSC-derived nuclei but also demarcate which MuSC had proliferated prior to fusion. I then employed a mechanical …
A Tale Of Two Serpins: Pathologic And Protective Roles Of Agt And Pai-1 In Metabolic And Cardiovascular Disease, Alex C. Pettey
A Tale Of Two Serpins: Pathologic And Protective Roles Of Agt And Pai-1 In Metabolic And Cardiovascular Disease, Alex C. Pettey
Theses and Dissertations--Physiology
Metabolic and cardiovascular diseases are leading causes of morbidity and mortality worldwide. Conditions such as metabolic dysfunction-associated steatotic liver disease (MASLD), aortic aneurysm, and cardiac fibrosis have limited pharmacological therapies, underscoring the need for deeper mechanistic investigations. Serine protease inhibitors (serpins) have been implicated in these pathologies and represent potential therapeutic targets. Despite structural homology, serpins regulate diverse physiological processes through both protease inhibition and non-inhibitory mechanisms. This dissertation examines the roles of two serpins, angiotensinogen (AGT) and plasminogen activator inhibitor-1 (PAI-1), in preclinical models of metabolic and cardiovascular disease to identify novel mechanisms that may inform future therapeutic strategies. …
Investigation Into The A/Ss Of Cervical Cancer And Its Effects On Tumor Control Probability In Radiation Therapy, Cameron Thayer-Freeman
Investigation Into The A/Ss Of Cervical Cancer And Its Effects On Tumor Control Probability In Radiation Therapy, Cameron Thayer-Freeman
Theses and Dissertations--Radiation Medicine
The standard of care for locally advanced cervical cancer is chemoradiation, consisting of conventional external beam therapy (EBT) followed by a boost of high dose rate (HDR) brachytherapy. These two radiation treatments will illicit different degrees of biological response depending on the tissue in question, and quantifying the overall effect the combined treatments will have require some form of biological modeling. The linear quadratic (LQ) model of cell survival is the most widely used radiobiological model in clinics across the nation.
It is quantified by the parameters a and ß, which model how radiation generates lethal damage in a population …
Environmental Detection And Quantification Of Equid Alphaherpesviruses In Equine Facilities Using Air Sampling, Emma E. Hyde
Environmental Detection And Quantification Of Equid Alphaherpesviruses In Equine Facilities Using Air Sampling, Emma E. Hyde
Theses and Dissertations--Veterinary Science
Equid alphaherpesvirus 1 and 4 (EHV-1/-4) circulate at equestrian facilities, contributing to outbreaks. Due to the complexities of the pathogen, including the limited predictability of reactivation from latency and the effects associated with secondary sites of viral replication, abortion, and neurologic disease, EHV infections are of utmost concern to the equine industry. Recent studies have highlighted the prevalence of the viruses in stabling areas at competitions, though little is known about this phenomenon in other high-traffic equine environments. This thesis presents two studies using air sampling surveillance methods to further explore the viral detection in other equine environments (veterinary facility …
Evaluating The Burnout Mitigating Effects Of A Structured Mentorship Program In Newly Hired Advanced Practice Providers, Melissa Soper
Evaluating The Burnout Mitigating Effects Of A Structured Mentorship Program In Newly Hired Advanced Practice Providers, Melissa Soper
DNP Projects
Importance: Burnout is a leading driver of clinician intent to leave, lower productivity, increased medical errors, and increased resource use.
Objective: The purpose of this project was to evaluate the effects of an evidence-based mentorship program on newly hired advanced practice providers’ (APPs’) level of stress, burnout, and professional fulfillment.
Results: At baseline, APPs demonstrated higher stress levels, moderate professional fulfillment, and low burnout. Outcomes showed improvement at the end of a mentorship program.
Conclusion: Longitudinal studies with larger sample sizes are needed to determine the true effect of a 6-month mentorship intervention on APP burnout, stress, and professional fulfillment.
Establishing An Advanced Practice Provider-Led Transient Ischemic Attack Clinic: A Quality Improvement Initiative, Brittany A. Young
Establishing An Advanced Practice Provider-Led Transient Ischemic Attack Clinic: A Quality Improvement Initiative, Brittany A. Young
DNP Projects
Background: Due to lack of subspecialized neurological care in many rural community settings, care in tertiary hospitals is in demand. Insufficient care pathways can lead to lack of bed and provider availability. Advanced Practice Provider Transient Ischemic Attack clinics have been shown to be safe alternatives to hospital admission, for patients who meet criteria. This study targeted practice change at a 1000 bed tertiary academic hospital.
Methods: The quasi-experimental study sample inclusion criteria included Transient Ischemic Attack patients presenting to the emergency department with an ABCD2 < 4, complete symptom resolution, and no new cardiac changes on monitoring. A pre and post survey with educational PowerPoint intervention was provided to all emergency department and Neurology providers and nurses. A Transient Ischemic Attack clinic was established with a corresponding order set to be utilized for streamlined outpatient work up.
Results: During the pilot period, 29 admissions were deferred with 69% …
Sepsis In Sight: Immersive Vr Simulation For Pediatric Training, Kelsey Wagler
Sepsis In Sight: Immersive Vr Simulation For Pediatric Training, Kelsey Wagler
DNP Projects
Abstract
Objectives: This project aimed to decrease the time required to administer antibiotics and fluid boluses to pediatric patients with sepsis by implementing a virtual reality (VR) simulation program. The initiative sought to enhance bedside nurses’ and pediatric residents’ knowledge, clinical reasoning, and confidence in sepsis assessment, early recognition, and evidence-based management. A secondary objective was to evaluate the effectiveness of VR simulation as an educational strategy for nurses in a high-acuity pediatric setting.
Design: This quality improvement project used a quasi-experimental design that incorporated a VR simulation intervention followed by a structured debriefing and targeted education session. Participants completed …