Digital Commons Network^™

Brain-Based Mechanisms Of Behavioral Impairment In Fetal Alcohol Spectrum Disorder (Fasd): The Neuroimaging Biomarkers Of Inhibitory Control, Zinia Pervin

Biomedical Engineering ETDs

The developing brain is highly susceptible to alcohol-induced toxicity, often resulting in long-term deficits in executive function and behavioral regulation. Inhibitory control impairments are among the most prominent deficits observed in Fetal Alcohol Spectrum Disorder (FASD). This study investigated the neural mechanisms of inhibitory dysfunction using a multimodal MEG–DTI approach in 67 children aged 6–8 years (34 with FASD, 33 controls) who performed a Go/No-Go task. Source-level MEG analyses revealed reduced stimulus-locked cortical activation in the anterior cingulate cortex and significant group-by-hemisphere interactions in the superior parietal cortex and cuneus. Time–frequency analyses showed diminished response-locked beta power in the sensory-motor …

Enacting Leadership And Transforming The World: Hannah Arendt, The Private, The Public, And Transfigurations In Between, Xochitl Mendez

Educational Studies Dissertations

In this dissertation I propose a framework that emphasizes transitions between Private and Public. I argue that individuals can consciously reshape and reformulate these transitions to assert themselves in the world. How can the individual’s own internal realities, ventures, projects and selfhood assert themselves in a fraught world as an act of self-affirmation, leadership, and transformation? New approaches to this question can all be revealed by using transitions between Private and Public as actionable strategies. I re-interpret Hannah Arendt’s Private and Public as she presented them in The Human Condition (1958). I turn these into multivalent and multilayered spaces of …

Harnessing Mechanobiology Of Resident Stem Cells To Refine Cell Based Therapeutics, Dakota R. Kamm

WUSM Theses and Dissertations – All Programs

Mesenchymal stem cells (MSCs) are resident cells residing with many adult tissues such as adipose tissue and bone marrow that have the potency for multiple lineage differentiation as well as the capacity to secrete a litany of beneficial factors to maintain homeostasis and promote tissue repair. Since 1995, MSCs have been used therapeutically to treat a variety of conditions from osteoarthritis to heart disease to muscle pathologies. Great leaps have been made in improving MSC-based therapies through optimization of culture methods and select enrichment of cellular subpopulations. More recently, the physical microenvironment of tissue in vivo and culture conditions in …

Exploring Bidirectionality In Global Health Partnerships: Perspectives From U.S. Pediatric Residency Programs., Anik Patel, Pauline Kamau, Justus Simba, Ashley Combs, Adelaide Barnes, Kathy Ferrer, Heather Haq, Duncan K. Hau, Lee Morris, Brittany Murray, Amy Rule, Reena P. Tam, Lisa Umphrey, Megan S. Mchenry

Manuscripts, Articles, Book Chapters and Other Papers

Introduction Despite growing interest, little guidance exists to re-evaluate global health partnerships (GHPs) through promoting bidirectionality. This study aims to understand the perspectives of United States (U.S.) pediatric global health (GH) faculty on institutional bidirectional practices to inform future discussions with international collaborators. Methods An internally, iteratively developed REDCap-based online survey (REDCap, Vanderbilt University, Nashville, TN), by our diverse author group, collected qualitative data from January 18 to February 20, 2023. Free-text responses were reviewed and coded inductively, with findings framed to generate themes for subsequent engagement with international partners. Results Of the 88 U.S. programs that identify as having …

Uneven Terrain Treadmill Training For Lower Limb Prosthesis Users: A Feasibility Study, Brian Diep, Keegan Feroah, Ani Gasparyan, Nevena Jovanovic

UNLV Theses, Dissertations, Professional Papers, and Capstones

Individuals with lower limb amputation (LLA) face an increased risk for falls which may limit mobility, confidence, and participation in daily activities. Current rehabilitation programs for this population rarely integrate surface training as an intervention, despite walking on different surfaces being a necessity to participate in the real world. This feasibility study aimed to evaluate the practicality, acceptability, and preliminary efficacy of an uneven treadmill training protocol for individuals with LLA. Five adults with LLA (P1: transfemoral, 38 years old, 1.75 m, 88.8 kg; P2: hip disarticulation, 38 years old, 1.60 m, 106.7 kg; P3: transfemoral, 53 years old, 1.81 …

Unknowing Sacrifices: Public Health And Radiation Illness In New Mexico And Nevada, 1940s-1960s, Beatriz Avila-Marquez

UNLV Theses, Dissertations, Professional Papers, and Capstones

The detonation of the first atomic bomb in the early morning of July 16, 1945, in New Mexico welcomed the atomic age that forever changed the world. After that day, thousands of lives were lost due to nuclear weapons, and hundreds of thousands more continued to suffer from the effects of atomic testing. The Atomic Energy Commission, fueled by the arms race of the Cold War, chose Nevada to continue the United States’ nuclear weapons testing. Knowledge of the dangers of radiation exposure, the effects of radiation, and techniques to prevent exposure are now available in part due to the …

The Exploration Of Leisure Occupations For Older Adults, Chloe Jisoo Kang

UNLV Theses, Dissertations, Professional Papers, and Capstones

Introduction: This capstone project involved the development and implementation of a community-based program for the exploration of leisure occupations for older adults. The program aimed to increase the life satisfaction and occupational balance of participants. A manualized program was created for the capstone site for potential continuation of the program.

Methods: The program was developed with the support of evidence-based research and the Occupational Therapy Practice Framework (OTPF-4). Two-hour events were held once a week for four weeks in a community area of the senior living community. A modified version of the Occupational Balance Questionnaire (OBQ11) and the Satisfaction with …

Weighted Blankets: Implementation Of A Quality Improvement Pilot Project In The Neurosciences Intensive Care Unit, Anita Musafar

Doctoral Projects

The weighted blanket quality improvement pilot project was implemented at Stanford Healthcare (SHC) to address the limited number of nonpharmacological interventions available for agitation management in the critical care setting. Patients within the Neurosciences ICU (NSICU) at SHC are clinically complex and uniquely vulnerable to experiencing agitation. The objectives of this initiative were to understand nurses' perceptions surrounding weighted blanket use in the critical care setting and assess whether there was a decrease in Richmond Agitation-Sedation Scale (RASS) scores with this intervention. From September 2025 to December 2025, the nurses within the NSICU implemented the use of weighted blankets for …

Longitudinal Changes In Cognition And Brain Imaging In Persons With Human Immunodeficiency Virus, James Kennedy, Sarah A Cooley, June Roman Fox, Kalen J Petersen, Elizabeth Westerhaus, Pat Reid, Linet Lopez, Beau M Ances

2020-Current year OA Pubs

BACKGROUND: As persons with human immunodeficiency virus (PWH) live longer, interactions between human immunodeficiency virus (HIV), aging, and structural brain integrity become increasingly vital for understanding cognitive disorders. This study analyzed the effects of aging, HIV serostatus, and viral load on cognition and brain volumes in a large cohort of persons without HIV (PWOH), PWH with undetectable virus (PWHU) (HIV RNA ≤50 copies/mL), and PWH with detectable virus (PHWD) (HIV RNA >50 copies/mL). Cross-sectional and longitudinal data were included.

METHODS: Cognitive composites (NPZ4) and brain volumes were obtained from 259 PWOH, 264 PWHU, and 84 PWHD with a total of …

Multiple Intracranial Aneurysms: An International Consensus Statement, Stavropoula Tjoumakaris

Department of Neurosurgery Faculty Papers

Introduction: Multiple intracranial aneurysms (MIAs) pose diagnostic and therapeutic challenges, and widely used rupture-risk scores have not been validated for this subgroup. Research question: To develop expert-based recommendations for the diagnosis, rupture-risk assessment, treatment selection, and follow-up of patients with MIAs. Material and methods: A modified Delphi process was conducted. After topic generation from the literature, iterative questionnaires were administered anonymously online to invited experts. Consensus was prespecified as ≥70% agreement. Twenty-six of 35 invitees (74.3%) completed the survey. Results: Consensus identified the ruptured lesion in aneurysmal subarachnoid hemorrhage (aSAH) using computed tomographic angiography (CTA) and 3D rotational digital subtraction …

Tumor Implantation Site Of Syngeneic Oral Cancer Models Differentially Induces Site-Dependent Local And Systemic Immunosuppression, Andrea H Molina, Gemalene M Sunga, Shawn Nguyen, Neeraja Dharmaraj, Ratna Veeramachaneni, Roberto Rangel, Jeffrey N Myers, Jeffrey D Hartgerink, Andrew G Sikora, Simon Young

Faculty, Staff and Student Publications

Background/objectives: Preclinical studies of head and neck squamous cell carcinoma (HNSCC) commonly use subcutaneous heterotopic (flank) tumor models for simplicity; however, orthotopic models may better reflect the native tumor environment. Direct comparisons of the tumor immune microenvironments (TIME) and tumor-draining lymph nodes (tdLNs) between these models remain limited. Better understanding of site-specific immune differences could improve model selection and interpretation of translational HNSCC studies.

Methods: ROC1 tumors were established in murine heterotopic and orthotopic sites, followed by assessment of tumor growth kinetics, survival, and the tumor microenvironment. Immune composition of tumors, blood, tdLNs, and spleen was evaluated at three tumor …

Evaluation Of Two Bioaerosol Sampling And Analysis Methods For The Collection Of Airborne Bacteria And Viruses, Elizabeth Detrick

UNLV Theses, Dissertations, Professional Papers, and Capstones

Bioaerosols, defined as airborne particles of biological origin, include bacteria, fungi, viruses, and their byproducts. They are ubiquitous in both indoor and outdoor environments and can cause respiratory infections, allergic reactions, and toxin-mediated illnesses. Air sampling plays a vital role in bioaerosol monitoring by enabling the collection and analysis of airborne microorganisms to assess exposure risk and inform mitigation strategies. The objective of this study was to determine the relative collection efficiency of two air samplers, the MD8 Airscan, a filtration sampling method, and the SKC BioSampler, an impingement sampling method. Aerosolization tests were conducted in a controlled test chamber …

Thermal Physiological Ecology Of The Relict Leopard Frog At Hot And Cold Springs, Robert P. Pelletier Iii

UNLV Theses, Dissertations, Professional Papers, and Capstones

The relict leopard frog (Rana onca) once ranged across drainages in southern Nevada, northwestern Arizona, and southwestern Utah. Following a decline, the species only persisted in a few geothermally influenced hot springs, which led to the perspective that hot springs were high-quality habitat. Rana onca has been under intensive, multiagency management and the species has been translocated to establish additional populations, including at cold-water sites. Three research studies are presented into the thermal physiological ecology of R. onca with the aim of informing conservation strategy. The research was focused at a thermally influenced hot spring and a cold-water spring to …

Impact Of Travel Time To Health Facilities On Perinatal Outcomes: A Systematic Review With Narrative Synthesis And Meta-Analysis, Sanam Roder-Dewan, Marwa Ramadan, Paul Ouma, Alexander Manu, Emelda A. Okiro, Natalie Strobel, Bibian N. Robert, Emily Odipo, Peter M. Macharia, Anthony Danso-Appiah, David C. Goodman, Queen Dube, Gagan Gupta, Hema Magge, Karen Edmond

Research outputs 2022 to 2026

Background: Evidence-based global guidance on safe travel time for small or sick newborns who require transfer to health facilities after birth is lacking. A two-hour threshold is frequently cited in low- and middle-income countries (LMICs), while 30 minutes is commonly used in high-income countries (HICs). Although these thresholds are widely referenced, their empirical basis and consistency across levels of newborn care and journey types have not been systematically examined. This study synthesises the evidence linking travel time and perinatal outcomes. Methods: We conducted a systematic review with narrative synthesis and meta-analysis to assess the impact of travel time or distance …

The Contribution Of Psychophysiological Stress Factors On Muscle Cramp Susceptibility, Lauren D. Levine

UNLV Theses, Dissertations, Professional Papers, and Capstones

Exercise-associated muscle cramps (EAMCs) are painful phenomenon that involves involuntary muscle spasms occurring during physical activity or directly after. 1 The landscape of the research on EAMC etiology has expanded from focusing on a single prevailing cause (e.g., hydration status) to a more holistic approach of how numerous factors contribute to the onset of neuromuscular fatigue, and the significance of each factor in those who suffer from EAMC. Following the multifactorial theory of cramp pathophysiology, this research sought to advance the knowledge of cramp susceptibility by investigating if there is a relationship between common psychophysiological factors like high anxiety, sleep …

Gut Dysbiosis And Microbial Metabolites In Atopic Dermatitis: Implications For Immune Regulation Along Gut-Skin Axis, Khushbakhat Alia, Hira Khan, Hamna Muzaffar, Nighat Perveen, Sara Alrashedi, Yusra Al Dhaheri, Yasir Waheed, Mohammed Tauqeer Alam, Muhammad Naseem, Khalid Muhammad

All Works

Atopic dermatitis (AD) is a multifactorial skin disorder characterized by immune dysregulation, impaired epidermal barrier, and strong microbial imbalance. Although genetic susceptibility and environmental triggers are established AD drivers, growing evidence highlights the gut skin axis as an important but underexplored AD pathogenesis factor. Gut microbiota dysbiosis, loss of short-chain fatty acid (SCFA)-producing bacteria, and altered metabolite profiles, such as tryptophan derivatives and secondary bile acids, have been linked to systemic immune imbalance and skin inflammation. However, the precise mechanism by which gut microbial alterations influence cutaneous immunity remains unclear. This review synthesizes recent advances from clinical and experimental studies …

“There Was Nothing Left To Give”: Experiences Of Compassion Fatigue Among Former In-Patient Psychiatric Clinicians, Katie Ladner

Counseling and Psychology Dissertations

Compassion Fatigue (CF) is a state of emotional and physical exhaustion resulting from prolonged exposure to stressful or traumatic experiences, specifically among healthcare workers, and it negatively impacts their ability to provide care to their patients and perform their jobs effectively (Singh et al., 2020). The purpose of this qualitative study is to explore the lived experiences of compassion fatigue in mental health clinicians who previously worked in in-patient psychiatric hospitals and their subsequent resignations. This phenomenological research explored participants' understanding and descriptions of their CF experiences in their roles within psychiatric hospitals and how CF contributed to their leaving …

Contribution Of Interleukin-6 (Il-6) To Body Defense And Healing In Pulmonary Tuberculosis, Hasrah Junaidi, Annis C. Adi, Soedarsono Soedarsono, Soetjipto Soetjipto, Chatarina U. Wahyuni, Fariani Syahrul, Mahmudah Mahmudah, Zakiyuddin Zakiyuddin, Iskandar Arfan, Abdullah A. Mamun, Rubia Sari

Saudi Medical Journal

Objective: To examine the contribution of IL-6 to host defense and healing in pulmonary tuberculosis (TB). Pulmonary tuberculosis continues to pose a significant global health challenge, with disease outcomes determined by complex host–pathogen interactions. Interleukin-6 (IL-6), a multifunctional cytokine, has been implicated in immune regulation and tissue recovery during TB, but its specific role is not fully established. This review aimed to examine the contribution of IL-6 to host defense and healing in pulmonary TB. Methods: A comprehensive literature search was performed across PubMed, Scopus, Web of Science, ScienceDirect, and Medline following PRISMA guidelines, covering publications from 2015 to 2025. …

What’S Behind The Mask: The Diagnostic Divide In The Female Autism Phenotype, Shelley Gies Alston

Educational Specialist, 2020-current

Autism spectrum disorder (ASD) is a neurodevelopmental condition characterized by differences in social communication and restrictive, repetitive behaviors; however, women are diagnosed at significantly lower rates than men. This study examined whether DSM-5-TR diagnostic practices may contribute to the underdiagnosis and delayed identification of ASD in individuals assigned female at birth (AFAB), with attention to masking behaviors, gendered social expectations, and clinician interpretation of symptoms. Grounded in the Female Autism Phenotype (FAP), a retrospective mixed-methods study surveyed 12 AFAB individuals aged 18–24 who self-identified or were formally diagnosed with ASD. Participants completed a 44-item online survey including Likert-scale and open-ended …

Cardiac Hdac3 Disruption Contributes To Hdac Inhibitor-Induced Qt Prolongation, Jiao Lu, Christopher Ward, Sichong Qian, Lilei Zhang, Jiang Chang, Zheng Sun

Faculty, Staff and Students Publications

Histone deacetylase (HDAC) inhibitors are approved for cancer treatment and are being investigated for a wide range of other diseases. Despite their therapeutic promise, clinical studies have reported cardiac side effects, particularly electrocardiogram (EKG) abnormalities, with QT interval prolongation being one of the most consistently reported findings. The mechanisms underlying these cardiac effects remain unclear. In this study, we investigated the role of HDAC3 in cardiac electrophysiology. We found that postnatal depletion of cardiac HDAC3 in mice caused QT interval prolongation, recapitulating the EKG abnormalities reported with HDAC inhibitor use. Adult-onset inducible depletion of cardiac HDAC3 induced additional EKG abnormalities, …

Keeping Families Together: Companion Animals As A Public Health Imperative, Lori R. Kogan, Rebecca Niemiec

Journal of One Health Systems

Contemporary US public health frameworks emphasize social, economic, and environmental determinants of health, yet largely overlook the reality that most households include companion animals regarded as family members. This omission has tangible consequences during crises such as housing instability, illness, domestic violence, or disasters, when families are often forced to choose between their own safety and the safety of their animals. We argue that this represents a significant public health failure. Drawing on interdisciplinary evidence, we propose that companion animals function as a social determinant of health, that forced separation constitutes a public health harm, and that Human-Animal Support Services …

Novel Paradigm For Assessing Vestibular Perception In Children, Nicole Kirk

Dissertations, 2020-current

While objective vestibular reflexive testing has been heavily researched, there are few studies analyzing subjective vestibular perception and to date no progress has been reported on motion perception in children. It is unknown if children perceive motion like adults creating a need for research comparing these age groups for thorough clinical profiles. This study adapted an adult psychophysics protocol for school-aged children and collected data on ten typically developing children and ten healthy adults. Participants rotated at various peak velocities and frequencies in a rotary chair and were asked to report their spatial orientation (i.e., how far around they rotated) …

Louisiana State University Health Sciences Center - 2026 - 153rd Commencement, Office Of The Registrar, Lsu Health Sciences Center-No

Graduation & Commencement Programs

The program for the 153rd Commencement of LSU Health Sciences Center - New Orleans held May 14, 2026.

Exploring Spike-Dependent And Ace2-Independent Sars-Cov-2 Interactions With Salivary Epithelial Cells In The Absence Of Ace2, Caitlynn M L Barrows, Thaise C Geremias, Simon Young, Mary C Farach-Carson

Faculty, Staff and Student Publications

Salivary gland infection by SARS-CoV-2 requires viral entry via routes and mechanisms that remain unresolved. This study examined the expression of the angiotensin-converting enzyme 2 (ACE2) receptor in salivary tissues and basal cell-derived human salivary progenitor cells (hS/PCs), an unstudied potential entry point for SARS-CoV-2. Multiple detection modalities, including immunocytochemistry, Western blotting, flow cytometry and RT-PCR, demonstrated a consistent lack of ACE2 protein and transcript in both tissue specimens and primary salivary epithelial cells. Antigen retrieval at pH 9 was determined to be optimal for immunodetection protocols, yet ACE2 remained undetectable. Small intestine tissue served as a positive control, confirming …

Impact Of The Dose And The Number Of Transmitted/Founder Viruses On Siv Dynamics, Sunil Maity, Vitaly V. Ganusov

Biology and Medicine Through Mathematics Conference

No abstract provided.

Robust Magnetoelectric Backscatter Communication System For Bioelectronic Implants, Fatima Alrashdan, Joshua E Woods, Ellie C Chen, Wendy Tan, Zhanghao Yu, Wei Wang, Mathews John, Lukas Jaworski, Drew Bernard, Allison Post, Angel Moctezuma-Ramirez, Abdelmotagaly Elgalad, Kaiyuan Yang, Mehdi Razavi, Jacob T Robinson

Faculty, Staff and Students Publications

Wireless communication technologies for bioelectronic implants enable remote monitoring for diagnosis and adaptive therapeutic intervention without the constraints of wired connections. However, wireless data uplink from millimeter-scale devices deep in the body struggles to achieve low power consumption while maintaining large misalignment tolerances. Here, we report a passive wireless backscatter communication system based on magnetoelectric transducers that consumes less than 0.3 pJ/bit and achieves less than 1E-6 bit error rate at a distance of 55 mm while tolerating a misalignment of 10 mm. Using this robust data uplink, we designed a wireless cardiac sensing node that can transmit electrocardiogram signals …

Anatomy Of The Orbit: Radiologic And Surgical Anatomy Of Anterior And Medial Approaches, Emily Garvey, Benjamin Bitner, Mindy R. Rabinowitz

Department of Otolaryngology - Head and Neck Surgery Faculty Papers

Purpose of Review: To review relevant medial orbital anatomy as well as the most commonly used approaches to this space. Recent Findings: The use of the endoscopic endonasal approach for access to the medial orbit, including the intraconal space, has expanded allowing for removal of previously “inoperable” pathology. Summary: Each approach has their strength when considering access to the medial orbit, the transcaruncular incision allows for fast access with limited dissection while the transpalebral approach allows for visualization of the medial orbit but also extended access to the superior and lateral orbit. Conversely, the conjunctival approach allows for wider access …

Abl Kinases Regulate Fgf Signaling Independent Of Crk Phosphorylation To Prevent Peters Anomaly Type Ii, Hao Wu, Yingyu Mao, Qian Wang, Honglian Yu, Michael Bouaziz, Neoklis Makrides, Enpeng Wang, Zhipeng Ding, Anthony J Koleske, Glenn L Radice, Jerry Hsu, Xin Zhang

2020-Current year OA Pubs

Peters anomaly is an anterior segment dysgenesis and a leading cause of congenital corneal opacity. Here, we show that loss of ABL kinases restores lens induction in the absence of FGF signaling but induces Peters anomaly type II independently of ERK signaling, a phenotype also observed with elevated FGF-Ras activity. This defect is rescued by allelic deletion of the ABL substrates CRK and CRKL. Contrary to prevailing models, ABL kinases do not act through direct phosphorylation of CRK proteins; instead, they phosphorylate PTPN12, suppressing p130CAS phosphorylation and CRK recruitment required for RHO GTPase activation. ABL kinase deficiency reduces actomyosin contractility …

Influence Of Semantic Richness On Word Form Learning In Children With Developmental Language Disorder, Mckenzie Scoppa, Sara Benham, Allison Gladfelter, Amanda Steeb, Lisa Goffman

CISLL Publications

Purpose:

Children with developmental language disorder (DLD) show a word form learning deficit, characterized by inaccurate and variable productions of novel words. We investigated whether, when a novel word form is introduced, incremental exposure to either a sparse visual referent or a relatively semantically rich story influences the phonetic accuracy and the phonological and articulatory variability of production in children with DLD and their typically developing (TD) peers.

Method:

Thirty-six preschoolers (18 DLD, 18 TD) aged 4;1–5;11 (years;months) were exposed to six novel words, two in each of three semantic cue conditions: no cues, sparse cues (visual referent), and rich …

Phosphate-Mediated Regulation Of Intracellular Calcium Dynamics, Huma Shahzad, Mohammed S. Razzaque

School of Medicine Publications

Phosphate (Pi) and calcium (Ca2+) are essential mineral ions that play coordinated roles in maintaining normal cellular functions. While various steps of calcium signaling are well characterized, emerging evidence suggests the critical role of both intracellular and extra cellular phosphate in regulating intracellular Ca2+. In the cytoplasm, phosphate influences ATP production and organelle calcium buffering and influences the activity of calcium pumps, such as sarcoplasmic/endoplasmic reticulum Ca2+-ATPase (SERCA) and the plasma membrane Ca2+-ATPase (PMCA). Extracellular phosphate, taken up via sodium-dependent phosphate transporters, triggers signaling cascades that affect the processes of calcium influx, storage, and release. Additionally, high extracellular phosphate levels …