Digital Commons Network^™

Epigenetic Crosstalk In Neuroblastoma Development And Progression, Nathan Drolet, Amber Wolf, Joanna Yi, Eveline Barbieri

Faculty, Staff and Students Publications

Neuroblastoma (NB), a pediatric malignancy of the peripheral nervous system, accounts for 15% of pediatric cancer deaths and remains a major challenge for cancer therapy. NB originates from sympathoadrenal (SA) progenitors of the neural crest (NC) cell lineage, whose formation and differentiation are controlled by epigenetic mechanisms. Although signaling pathways and epigenetic factors implicated in NB tumorigenesis have been well-described, a holistic understanding of how development and epigenetics overlap to drive NB is lacking. By exploring vital interplays and co-dependencies between key pathways and their epigenetic control in NC development, we have gained novel insights into the mechanisms governing NB …

Metabolites Produced By Agat+ Cells Support Regeneration In The Planarian Schmidtea Mediterranea, Aubrey M Kent, Carlos Guerrero-Hernández, Carolyn Brewster, Sean Mckinney, Jason A Morrison, Mary C Mckinney, Eric J Ross, Frederick G Mann, Blair W Benham-Pyle, Alejandro Sánchez Alvarado

Faculty, Staff and Students Publications

Planarians exhibit extraordinary regenerative abilities driven by pluripotent neoblasts, yet the roles of post-mitotic progenitor and differentiated cells in this process remain incompletely understood. Here, we investigate the function of agat+ cells, epidermal progenitors expressing members of the arginine:glycine amidinotransferase (agat) gene family, in the regeneration of Schmidtea mediterranea. Comprehensive analysis of all five planarian agat paralogs revealed that agat-1, -2, -3, and -4 are co-expressed in subepidermal populations enriched at wound sites, while agat-5 is minimally expressed. RNAi-mediated knockdown of agat-1 and agat-2 resulted in severe defects: agat-1 primarily disrupted tissue homeostasis, …

Inheriting Chromosome Conformation, Kyle P Eagen

Faculty, Staff and Students Publications

No abstract provided.

Personalizing Therapies Over The Course Of Hormone Receptor-Positive/Her2-Negative Metastatic Breast Cancer, Akshara Singareeka Raghavendra, Senthil Damodaran, Carlos H Barcenas, Suzanne A Fuqua, Rachel M Layman, Debu Tripathy

Faculty, Staff and Students Publications

The hormone receptor (HR)‐positive/human epidermal growth factor receptor 2 (HER2)‐negative breast cancer subtype accounts for most early and metastatic breast cancer (MBC) cases. HR‐positive/HER2‐negative MBC is characterized by a relatively prolonged, although variable, disease course and substantial intertumoral and intratumoral heterogeneity. Although endocrine‐based therapies remain the cornerstone of treatment, nearly all patients eventually develop resistance, which is increasingly addressed with biologically targeted agents and newer‐generation cytotoxic drugs. This review summarizes the current understanding of HR‐positive/HER2‐negative MBC biology, highlighting mechanisms of intrinsic and acquired resistance, including driver genomic alterations that, along with clinical factors, help guide therapeutic choices and sequencing. The …

Utilizing A Mobile App To Enhance Patient Engagement & Self-Efficacy Of Adults With Type 2 Diabetes In Primary Care: A Quality Improvement Project, Melissa Ann Donais

DNP Scholarly Projects

Abstract

Background: Diabetes is a common condition encountered in primary care and requires significant attention to lifestyle factors to be properly managed. The primary care provider may lack the time needed to assist the patient with self-management strategies to improve glycemic control. Mobile applications may be a tool that the primary care provider can use to help improve diabetes self-efficacy and patient engagement.

Theoretical Framework: The Mountain Model guided this quality improvement (QI) project by providing a framework to translate research into clinical practice. The Mountain Model bridged the gap between research and the standard of care in this practice. …

Test-Retest Apparent Diffusion Coefficient Reproducibility In Head And Neck Cancer Using A 15-T Mr-Linac, Brigid A Mcdonald, Dina El-Habashy, Renjie He, Sam Mulder, Sarah Mirbahaeddin, Abdallah S R Mohamed, Sara Ahmed, Yao Ding, Jihong Wang, Stephen Y Lai, Alex Dresner, John Christodouleas, Clifton D Fuller

Faculty, Staff and Student Publications

Purpose

To evaluate the reproducibility of apparent diffusion coefficient (ADC) measurements in head and neck squamous cell carcinoma (HNSCC) using a 1.5-T MR-linac (MRI-guided linear accelerator) system.

Materials and Methods

In this retrospective study, conducted between February 2021 and January 2024, patients with HNSCC lesions underwent echo-planar imaging diffusion-weighted MRI on a 1.5-T MR-linac system at two time points before the start of radiation therapy. Mean and median ADC values and volumes were measured for each lesion. Absolute and percent reproducibility coefficients (RCs) were calculated. Linear regression analyses and F tests were performed to determine whether the lesion volume or …

Organ Chips And Translational Research: Identifying And Examining New Ethical Issues, Melanie Jeske

Center for Medical Ethics and Health Policy Staff Publications

Organ chips, also known as organ-on-a-chip devices, tissue chips, or microphysiological systems, have emerged over the last decade as a promising translational technology amidst growing concern about the translational crisis between laboratory research and patient bedside. Pointing to high rates of failure between nonhuman animal models and safety and efficacy in humans, organ chips and similar new approach methods have attracted substantial public and private investment. As human-cell-based alternatives to animal models, organ chips promise more predictive, efficient, and ethical platforms for pharmaceutical and toxicity testing. Engineered cultivation systems that enable cells to assemble into tissue-like structures (e.g. kidney, brain, …

Anything But Endo: Diagnostic Buck-Passing In Endometriosis Diagnosis, Rita Dexter, Megan Kitts, Heather Welty, Melanie Jeske

Center for Medical Ethics and Health Policy Staff Publications

People living with endometriosis, a disease in which tissue similar to the lining of the uterus grows elsewhere in the body, often experience prolonged diagnostic journeys because of symptom variability, normalisation of period pain and other symptoms, and lack of awareness of the condition. In this article, we analyse the endometriosis diagnostic journey through the lens of epistemic injustice. Drawing on in-depth interviews with 52 people living with endometriosis in the United States, we introduce the concept of diagnostic buck-passing to characterise the phenomenon wherein individuals who seek treatment for their symptoms end up stuck in a cycle of seeing …

Can I Get A Witness? The Ethical Dimensions Of Family Presence In Patient Suffering, Jennifer Blumenthal-Barby, Trevor M Bibler, Holland Kaplan, Adam Omelianchuk, Joanna Smolenski

Center for Medical Ethics and Health Policy Staff Publications

For patients who are suffering, the bedside presence of a family member can provide comfort, and many people hold that there is moral value in being present with a conscious, suffering patient. Yet what is the moral significance of the absence of family members when a patient is minimally conscious or unconscious and not aware of their absence? Clinicians are often troubled when family members and surrogate decision-makers who are able to spend a significant amount of time at an unconscious, seriously ill patient's bedside do not do so. Clinicians feel frustrated that they must bear the burden of witnessing …

Toward Ethical Provenance Tracking: The Ga4gh Model Data Access Agreement (Daa), Alexander Bernier, Bartha Maria Knoppers, Jonathan Lawson, Robyn Mcdougall, Maili Raven-Adams, Vasiliki Rahimzadeh

Center for Medical Ethics and Health Policy Staff Publications

Purpose: Standardizing contractual clauses that govern data access enables research institutions to responsibly steward genomic and related health data while enabling its efficient downstream reuse.

Methods: We describe a document analysis study using both qualitative and comparative law analytical approaches to identify the most common categories of clauses from 29 different data access agreements used by human biomedical research consortia globally. We furthermore characterized the legal positions and standard practices for each common element of the agreement and synthesized across them to develop model clauses. A total of 3 discussion sessions were organized virtually to refine the clauses among members …

Clinicians’ Views On A Patient Decision Aid For Deep Brain Stimulation In Parkinson’S Disease, Hillary S King, Jennifer Blumenthal-Barby, Benjamin H Levi, Sol De Jesus, Harini Sarva, Laura Y Cabrera

Center for Medical Ethics and Health Policy Staff Publications

Introduction: For people with Parkinson's disease (PD), deciding whether to pursue deep brain stimulation (DBS) has become increasingly complex. Evidence suggests current approaches to collaborative decision-making may fall short of accepted standards. Thus, a decision support intervention, such as a patient decision aid (PtDA) may be warranted. PtDAs have been shown to improve patients' knowledge, expectations, and participation in decision-making for other, similar healthcare decisions. We therefore sought to assess neurologists' awareness of, and experience using, PtDAs, and to solicit their opinions on the ideal features of a PtDA for PD patients considering DBS.

Methods: Sixteen United States-based neurology clinicians …

Imagining Genomics And Population Health In 2050: Anticipating Future Research, Policy, And Governance Needs, Bartha Maria Knoppers, Yann Joly, Ma Apos N H Zawati, Habiba Alsafar, Jeffrey C Barrett, Laura Blackburn, Brian Hon-Yin Chung, Martina C Cornel, Edward S Dove, David Glazer, Calvin Wai-Loon Ho, Muin J Khoury, Anna C F Lewis, Anneke Lucassen, Peter F R Mills, Colin Mitchell, Nicola Mulder, Ainsley J Newson, Anthony Ng, Paul D P Pharoah, Vasiliki Rahimzadeh, Megan C Roberts, Saskia C Sanderson, Jeffrey M Skopek, Ron Zimmern, Eric M Meslin

Center for Medical Ethics and Health Policy Staff Publications

No abstract provided.

Spatial Evolution In Temporal Dynamics Of Hemodynamic Response Function In Human Superior Colliculi With Ultra-High-Resolution Mri At 9.4t, Nooshin J Fesharaki, Artemy Vinogradov, David Ress, Jung Hwan Kim

Faculty, Staff and Student Publications

The superior colliculus (SC) plays a crucial role in multisensory integration, visual information processing, saccadic target selection, visual selective attention, and decision making. In particular, the SC has a key role in oculomotor coordination, following a rostro-caudal organization. The rostral SC, which corresponds to foveal representation, is linked to fixation, microsaccades, smooth pursuit, and vergence adjustments. In contrast, the caudal SC, representing more peripheral visual field, is associated with the large gaze shifts (saccades). However, evidence regarding whether this functional gradient is preserved in the human SC remains limited. In this study, we employed a sequence-following visual-motor task to specifically …

Alternative Polyadenylation Signatures Distinguish Maladaptive Right Ventricular Remodeling In Pulmonary Hypertension: Implications For Rna-Based Diagnostics And Therapeutics, Janani Subramaniam, Venkata Jonnakuti, Scott D Collum, Sandra Martineau, Kai-Lieh Huang, Sandra Breuils-Bonnet, Andrea L Frump, Bindu H Akkanti, Jayeshkumar A Patel, Manish K Patel, Ismael Salas De Armas, Isabella N Lefebvre, Rajko Radovancevic, Elvin Blanco, Eric J Wagner, Igor Gregoric, Sriram Nathan, Biswajit Kar, Steeve Provencher, Sebastien Bonnet, François Potus, Hari Krishna Yalamanchili, Harry Karmouty-Quintana

Faculty, Staff and Student Publications

Increased pulmonary vascular pressures due to vascular remodeling, elevated vascular resistance, and vasoconstriction characterize Pulmonary Arterial Hypertension (PAH). The narrowing of the pulmonary arteries and obstruction of blood flow increase the Right Ventricular (RV) afterload, forcing the RV to undergo structural and functional changes. While adaptive remodeling leads to RV compensation by maintaining function, maladaptive remodeling leads to RV decompensation, characterized by worsening function and eventual failure. At present, there is no effective treatment for these patients as therapies for left ventricular failure are ineffectual, and there are no therapies specifically targeting the RV. Therefore, there is a clear need …

Polyfluoroalkyl Substances And Altered Glucose Homeostasis In Adolescents Following Bariatric Surgery, Elizabeth Costello, Brittney O Baumert, Zhenjiang Li, Vishal Midya, Shudi Pan, Justin R Ryder, Thomas H Inge, Todd M Jenkins, Stephanie Sisley, Stavra A Xanthakos, Anita Courcoulas, Douglas I Walker, Nikos Stratakis, Damaskini Valvi, Scott M Bartell, Angela L Slitt, Rohit Kohli, Sarah Rock, Michele A La Merrill, Sandrah P Eckel, Max T Aung, Rob Mcconnell, David V Conti, Lida Chatzi

Children’s Nutrition Research Center Staff Publications

Objectives: Bariatric surgery is an effective treatment for severe obesity and associated metabolic comorbidities. Exposure to polyfluoroalkyl substance (PFAS) before bariatric surgery may attenuate improvements in glucose metabolism and explain some of the heterogeneity in post-surgery outcomes.

Design: This is an observational cohort study.

Methods: Adolescents (n = 186) enrolled in the Teen-Longitudinal Assessment of Bariatric Surgery study were included. Eight-PFAS congeners were measured in plasma before surgery. Linear and logistic regressions were used to examine cross-sectional associations between log2-transformed PFAS (ng/mL) and fasting glucose, insulin, hemoglobin A1c (HbA1c), and homeostatic model assessment for insulin resistance (HOMA-IR). Linear mixed …

Limosilactobacillus Reuteri Alleviates Proinflammatory T-Cell-Mediated Liver Injury And Transcriptomic Changes In Immunocompromised Mice, Ana Fadhel Alvarez, Zheng Yin, Beanna Okeugo, Alexander Banerjee, Meng Luo, Christopher M Taylor, Salomea Giorgberidze, Vaishali Harne, Rambabu Majji, Melissa N Munroe, Ji Ho Suh, Stephen T C Wong, Kang Ho Kim, Hari Krishna Yalamanchili, Suhair Al Salihi, Jon Marc Rhoads, Yuying Liu

Children’s Nutrition Research Center Staff Publications

Background: A deficiency of immunosuppressive regulatory T cells, as seen in scurfy (SF) mice or in IPEX syndrome in humans, can lead to multiorgan inflammation. Oral administration of the probiotic Limosilactobacillus reuteri Deutsche Sammlung von Mikroorganismen und Zellkulturen GmbH (DSM) 17938 prolongs survival and reduces Th1- and Th2-associated inflammation in SF mice. It remains unclear how DSM 17938-educated SF-CD4+ T cells modulate T-cell-liver communication.

Methods: To characterize CD4+ T cells from SF mice orally administered DSM 17938 (Prob-SF-CD4+ T cells) and to compare them with CD4+ T cells from SF mice (SF-CD4+ T cells), cells isolated from SF spleens were …

Insulinemic And Inflammatory Dietary Patterns And Colorectal Cancer Risk: A Dietary Data Harmonization Study Of One Million Participants In The Consortium Of Metabolomics Studies (Comets), Ni Shi, Rachel Hoobler, Rhea Harewood, Amanda E Toland, Demetrius Albanes, Emmanouil Bouras, Marc J Gunter, Linda M Liao, Steven C Moore, Fulvio Ricceri, Jerome I Rotter, Rashmi Sinha, Rachael Stolzenberg-Solomon, Anne Tjønneland, Alexis C Wood, Danxia Yu, Mary C Playdon, Fred K Tabung

Children’s Nutrition Research Center Staff Publications

Background: Inflammatory and insulinemic dietary patterns have been associated with colorectal cancer (CRC) risk, but generalizability across diverse populations with heterogeneous food supplies and dietary behaviors has not been established.

Objectives: We harmonized disparate dietary and covariate data on a large scale to compute the reverse Empirical Dietary Index for Hyperinsulinemia (rEDIH), reverse Empirical Dietary Inflammatory Pattern (rEDIP), and Healthy Eating Index (HEI)-2015 scores, and tested their associations with CRC risk.

Methods: We leveraged data among 501,892 women and 407,390 men from 6 cohorts across the United States (NIH-AARP, Multi-Ethnic Study of Atherosclerosis, Prostate, Lung, Colorectal, and Ovarian, SCCS) and …

Cerebellar Motor And Non-Motor Contributions To Dystonia Pathophysiology And Treatment, Linda H Kim, Cheryl Brandenburg, Roy V Sillitoe

Duncan NRI Faculty and Staff Publications

Dystonia is a complex neurological disorder characterized by sustained or intermittent abnormal movements and/or postures. However, dystonia's non-motor symptoms, particularly the sleep disturbances, are critical yet underexplored concerns that affect all ages. Here, we synthesize current knowledge on the motor and non-motor domains of dystonia, emphasizing the functional interconnections and plasticity within cerebellar motor, cognitive, and sleep-associated circuits to motivate more comprehensive and effective treatments that improve overall quality of life.

Access To Digital Health Technologies: Personalized Framework And Global Perspectives, Sanjiv M Narayan, Mina K Chung, Demilade Adedinsewo, Luisa C C Brant, Leslie L Davis, David Duncker, Jennifer L Hall, Janet K Han, Carolyn S P Lam, Eldrin Lewis, Joseph Loscalzo, Manlio F Márquez, Vasiliki Rahimzadeh, Fatima Rodriguez, Prashanthan Sanders, Emma Svennberg, Kenneth Stein, Mintu Turakhia, Clyde Yancy, Antonis A Armoundas

Center for Medical Ethics and Health Policy Staff Publications

The emergence and rapid adoption of digital health technologies (DHT) present unprecedented opportunities to democratize and reduce disparities in health care by monitoring health and disease at the point of care in all patients. However, limited access to DHT is becoming a major obstacle to realizing these goals. Access to DHT is influenced not only by well-recognized social determinants of health, but also by digital determinants of health, such as digital literacy and the need for broad access to digital infrastructure, as well as commercial and economic factors. Addressing these challenges and designing unbiased systems of care are essential to …

Refining Aicardi Syndrome Diagnostic Criteria: An Expert-Based Consensus Using A Modified Delphi Approach, Silvia Masnada, Valentina De Giorgis, Umberto Carugo, Nadia Bahi-Buisson, Mara Cavallin, Mark Corbett, Manuela Formica, Jozef Gecz, Natalia Petros, Emilio Perucca, Anna Pichiecchio, Paolo Fusar Poli, Elliott H Sherr, Ignatia B Van Den Veyver, Federico Zara, Martin Geroldinger, Pierangelo Veggiotti, Alexis Arzimanoglou

Duncan NRI Faculty and Staff Publications

Background and objectives: Aicardi syndrome (AIC) is a rare neurodevelopmental disorder historically characterised by the presence of chorioretinal lacunae, corpus callosum agenesis, infantile spasms and several supporting features that aid in diagnosis. However, the unclear aetiology and evolving diagnostic tools have led to ongoing reconsideration of the criteria, based on individual approaches. Our study aimed to establish, for the first time, an expert-based consensus on diagnostic criteria for AIC by integrating both existing and novel ones.

Methods: A geographically diverse and multidisciplinary group of expert physicians was invited to participate in a modified Delphi study, to achieve consensus on major, …

From Passive To Powerful: Creating Engaging Resident-As-Teacher Modules, Anna E Rueda, Stephanie V Sherman, Sherita J Love, Glenn C Bridges, Wesley A Mayer, Mark J Harbott, Teri L Turner, Bani M Ratan

Faculty and Staff Publications

Background: We aimed to design, implement, and evaluate three novel institutional resident-as-teacher (RAT) e-modules for postgraduate year (PGY) 1, 2, and 3 and compare them to previously utilized online trainings.

Methods: We utilized PICRAT, a model examining both students' relationship with technology (passive, interactive, creative) and instructors' use of technology (replaces, amplifies, or transforms) to create interactive experiences that amplified teaching methodologies. We compared evaluations of the previous and new trainings with an unpaired t test. New modules were assessed with one-way analysis of variance for specialty-based acceptability and content analysis of two open-ended questions.

Results: Response rates averaged 93.2% …

“Shaking The Ladder” Reveals How Analytic Choices Can Influence Associations In Nutrition Epidemiology: Beef Intake And Coronary Heart Disease As A Case Study, Colby J Vorland, Lauren E O'Connor, Beate Henschel, Cuiqiong Huo, James M Shikany, Carlos A Serrano, Robert Henschel, Stephanie L Dickinson, Keisuke Ejima, Aurelian Bidulescu, David B Allison, Andrew W Brown

Children’s Nutrition Research Center Staff Publications

Nutrition epidemiological models involve many analytic decisions, such as defining exposures, selecting which covariates to include, or configuring variables in different ways. We explored the impact of analytical decisions on conclusions in nutrition epidemiology using self-reported beef intake and incident coronary heart disease as a case study. We used REasons for Geographic and Racial Differences in Stroke (REGARDS) data, and selected covariates and their configurations from published literature to recapitulate common models used to assess associations between meat intake and health outcomes. Three model sets were designed: sets one and two used continuous and quintile-defined beef intakes, respectively, each with …

A Pragmatic Guide To Data Integration For Pediatric Researchers: The Nuts And Bolts Of Mixed Methods Analysis, Kathleen A Knafl, Janet A Deatrick, Veronica M Swallow, Yelena P Wu, Debbe Thompson

Children’s Nutrition Research Center Staff Publications

Objective: To provide pragmatic guidance on data analysis, integration, and reporting guidance for investigators new to mixed methods research.

Methods: Three core mixed methods designs (convergent, explanatory sequential, and exploratory sequential) are described. Key decision points related to data integration-specifying intent, data selection, data preparation, integration strategies, use of analysis software, reporting-are explained, including comparison of decision points across the different mixed methods designs.

Results: Recommendations for addressing key decisions during analysis are provided and supported with published examples from mixed methods studies focused on pediatric populations.

Conclusions: Integration of qualitative and quantitative data is the defining characteristic of mixed …

Sustainable Community-Wide Model To Enhance Cancer Data Usage And Utility, Emily S Boja, Mousumi Ghosh, Ying Huang, Tung-Shing Mamie Lih, Rawan Shraim, Gregory Wheeler, Diana Thomas, Rakesh Khanna, Stephanie Sandor, Jinghui Zhang, Sapna Oberoi, Nicolas J Llosa, Aditya Suru, Fernanda Silva Michels, Eric Durbin, Anna Fernandez, Lucy Han, James Galbraith, Yin Lu, Brian Furner, James H Tanis, Michael Watkins, David Higgins, Gavriel Matt, Xin Zhou, Yang Li, Marcin Cieslik, Jamie Estill, Michael Sierk, Yanling Sun, Weiping Ma, Joseph Flores-Toro, Freddie Pruitt, Subhashini Jagu, Elmer A Fernández, Daniela Orschanski, Stephanie J Spielman, Jaclyn Taroni, Trinh Nguyen, Brian Capaldo, Erin Beck, Tanja Davidsen, Johanna Goderre Jones, Minghong Ward, Anne Sturcke, Jennifer M Torres Del Valle, Sean Hanlon, Danielle Daee, Brandon Wright, Nathaniel Boyd, Heather Basehore, Liang Liu, Ying Hu, Daoud Meerzaman, Huiqing Li, Ying Wu, Gregory H Reaman, Erin Rudzinski, Jack F Shern, Brigitte Widemann, Warren Kibbe, Jaime Guidry Auvil

Children’s Nutrition Research Center Staff Publications

Despite vast investments in data collection, generation, and sharing from childhood cancer studies, for example, Gabriella Miller Kids First Research Program, Childhood Cancer Data Initiative, and other efforts, secondary use of data remains a challenge especially for rare diseases. The National Cancer Institute (NCI) Office of Data Sharing (ODS) aimed to promote FAIR (Findable, Accessible, Interoperable, Reusable) data sharing practices to enhance data utility, accelerate discovery, and foster interdisciplinary collaboration. NCI ODS launched its inaugural Data Jamboree focusing on childhood cancer alongside its third Annual Symposium in September 2025. Over 120 participants with diverse backgrounds coalesced into 23 multidisciplinary teams …

The Effects Of Stress-Related Hormones On Excitatory Synapse Formation, Autumn C. Garvey

Honors Undergraduate Theses

Stress profoundly influences brain function through neuromodulatory hormones that regulate synaptic plasticity, yet how temporal patterns of hormone exposure shape excitatory synapse formation remains poorly understood. This study investigates how exposure to stress hormones, norepinephrine and cortisol, affects excitatory synapse development. While existing research primarily compares concentration models, real-world stress occurs in variable patterns that may produce distinct neural outcomes. To address this gap, differentiated Neuro2A neuronal cells are exposed to norepinephrine or cortisol under a continuous treatment paradigm designed to model chronic stress conditions. Following treatment, immunofluorescence imaging is utilized to quantify excitatory synapse formation through analysis of presynaptic …

The Impact Of Gastric Sleeve And Roux-En-Y Gastric Bypass On Chief Cell Function And Protein Digestion In Obese Patients, Garikoitz Mikel Gainza

Honors Undergraduate Theses

Obesity has become one of the largest global health concerns of the 21^st century, correlating with numerous associated diseases. To help address the growing prevalence and burden of obesity, sleeve gastrectomy and Roux-en-Y gastric bypass have become two commonly performed surgical procedures done to promote weight loss by altering the anatomical structure of the stomach and surrounding organs of the gastrointestinal system. Although the benefits of improved metabolism linked to these surgical procedures are well studied, their impact on the physiology of gastric cells, and more specifically chief cells as they relate to protein digestion post-surgery, is yet to …

Increasing Documentation Of Endotracheal Tube Cuff Pressures: A Quality Improvement Initiative For Flight Crew Providers, Matthew D. Noss

Graduate Theses, Dissertations, and Problem Reports (ETD)

ABSTRACT

Background: There was a lack of documentation of endotracheal tube (ETT) cuff pressures (CPs) by flight crew providers at Base 1 of HealthNet Aeromedical Services. A three-month pre-intervention data collection showed 1.8% of patients had initial CPs documented. Inadequate documentation and monitoring of ETT CPs can lead to patient complications such as tracheal injury and aspiration making this an important area for quality improvement.

Purpose: To increase documentation of ETT CPs through education and evidence-based interventions.

Intervention: This project implemented an educational in-service on ETT cuff syringe manometry for flight crew providers. The educational intervention consisted of …

Fgf19 As A Colorectal Cancer Serum Biomarker And Fgfr4 As A Mediator Of Anti-Her2 Resistance In Breast Cancer, Jordan Beardsley

Graduate Studies Theses and Dissertations 2026

The fibroblast growth factor 19 (FGF19)-fibroblast growth factor receptor 4 (FGFR4) signaling pathway regulates hepatic metabolism, bile acid (BA) synthesis, and hepatocyte proliferation. This signaling axis also is implicated in promoting tumor progression, therapeutic resistance, and metastasis in certain cancers.

In colorectal cancer (CRC) there is a critical need for non-invasive biomarkers for disease detection and monitoring. We identified FGF19 as a candidate CRC serum marker through meta-transcriptomics and found FGF19 to be expressed and secreted by CRC cell lines. Tumor-derived FGF19 was detectable in mouse serum at levels correlating with tumor volume in a subcutaneous xenograft model. RNA sequencing …

Manuka Honey Modulates Oxidative Stress In Neuro2-A Cells Through Mitochondrial Regulation, Rachel Abramovici

Honors Undergraduate Theses

Manuka honey is known for its vital usage in wound healing, being an agonist towards fighting infections, and is an acting antioxidant [32]. Its main constituents are flavonoids and phenolic compounds, with methyl syringate (MSYR) being a major active ingredient. The specific compounds responsible for these antioxidant effects, particularly in the CNS, remain unclear. It is hypothesized that pre-treatment of mouse neuroblastoma cells with MSYR followed by hydrogen peroxide exposure will activate the AMPK/SIRT1/PGC-1a pathway, due to MSYR’s phenolic structure, and thus reduce oxidative stress and improve mitochondrial biogenesis. Hydrogen peroxide is a standard reactive oxygen species (ROS) treatment to …

Bodies Of Knowledge: The Accuracy Of Medical Anatomical Drawings From The 14th To The 18th Century, Marina G. Mitchell

Honors Undergraduate Theses

From the fourteenth to the eighteenth centuries, European anatomical illustration underwent major transformations in response to changing scientific methods, technologies, and visual conventions, reflecting critical transitions in anatomical history. Scientific evolution allowed these images to achieve increasing structural precision and internal detail, though they frequently diverged from anatomical forms as they are understood today. This study examines how anatomical inaccuracies across five centuries emerged not from ignorance, but from deliberate mediation between purpose, observation, pedagogy, artistic convention, and cultural ideology. Through close analysis of works in visual comparison to their modern counterparts, this thesis identifies specific deviations from the twenty-first …