Digital Commons Network^™

Noninvasive Enrichment Of Circulating Tumor Biomarkers In A Mouse Model Of Diffuse Midline Glioma Using Focused Ultrasound, Dingyue Zhang, Yimei Yue, Yan Gong, Leqi Yang, Kevin Xu, Jinyun Yuan, Hong Chen

2020-Current year OA Pubs

BACKGROUND: Diagnosing diffuse midline glioma (DMG) through invasive tissue biopsies is challenging due to the tumor's eloquent location at the pons. Liquid biopsies offer a promising noninvasive alternative; however, their limited detection sensitivity and lack of information on the source of biomarkers pose great challenges. This study aimed to evaluate the feasibility and safety of using focused ultrasound (FUS) with microbubbles to enrich circulating DMG tumor biomarkers in blood and cerebrospinal fluid (CSF) using a mouse model.

METHODS: Murine DMG cells, transfected with enhanced green fluorescent protein (EGFP) and firefly luciferase (Fluc) genes, were orthotopically injected into the mouse brain. …

Biomedgraphica: An All-In-One Platform For Joint Textual Biomedical Prior Knowledge And Numeric Graph Generation, Heming Zhang, Shunning Liang, Tim Xu, Wenyu Li, Di Huang, Yuhan Dong, Philip Miller, Peter Goedegebuure, Marco Sardiello, Jonathan Cooper, William Buchser, Patricia Dickson, Ryan C Fields, Carlos Cruchaga, Yixin Chen, Michael Province, Philip Payne, Fuhai Li, Et Al.

2020-Current year OA Pubs

MOTIVATION: Multiomics data analysis is essential for scientific discovery in precision medicine. However, translating analysis results of omics data analysis into novel scientific hypotheses remains a significant challenge. Human experts must manually review analysis results and generate new hypotheses based on extensive and interconnected biomedical prior knowledge, which is subjective and not scalable. While large language models can accelerate the discovery, their reasoning improves when grounded in structured, auditable, and comprehensive biomedical prior knowledge. However, biomedical knowledge is scattered across heterogeneous databases that use diverse and inconsistent nomenclature systems, making it difficult to integrate resources into a unified format for …

Viscoelastic And Morphologic Changes In The Lumbar Intervertebral Discs Of The 5xfad Mouse Model Of Alzheimer's Disease, C E Gonzalez, C A Schurman, K A Wilson, B Schilling, L M Ellerby, S Y Tang

2020-Current year OA Pubs

BACKGROUND: Chronic low back pain, commonly associated with intervertebral disc (IVD) degeneration, is highly prevalent in patients with Alzheimer's disease (AD), and the severity of the pain is correlated with the severity of the dementia. While incidences of both afflictions increase dramatically in the elderly population, it is unknown whether AD exacerbates the health of the IVD.

AIMS: The aim of this study is to examine how AD-related mutations affect the structure and mechanics of the IVD.

MATERIALS AND METHODS: Utilizing one-year-old male and female 5xFAD mice that constitutively express human APP and PSEN1 transgenes with five AD-linked mutations, we …

Spatial Transcriptomic Profiling Of Decalcified Murine Musculoskeletal Samples Via Xenium Prime 5k, Lindsey Lammlin, Huong X Tran, Aanya Mohan, Michael D Newton, Scarlet C Howser, Stephen J Redding, Christina A Capobianco, Kurt D Hankenson, Alexander J Knights, Tristan Maerz

2020-Current year OA Pubs

Successful generation of high-quality spatial transcriptomics data from murine musculoskeletal tissues has been impeded by the challenge of preserving RNA integrity through the harsh tissue processing steps required for histological sectioning. In particular, the need to thoroughly fix and decalcify mineralized tissues has proven problematic. We detail a comprehensive sample processing pipeline for 3 common murine musculoskeletal tissue samples, enabling high-quality transcript detection via imaging-based spatial transcriptomics using the Xenium Prime 5K platform from 10x Genomics. Our protocol outlines methodological details for transcardiac perfusion, fixation, decalcification, paraffin processing, and a sample co-embedding strategy facilitating anatomically consistent and simultaneous sectioning of …

Investigation Of Warfarin–Human Serum Albumin Binding By Ultrafast Affinity Extraction Using Single- And Dual-Column Affinity Microcolumn Systems, Samiul Alim

Department of Chemistry: Dissertations, Theses, and Student Research

This dissertation examined the interaction of warfarin with human serum albumin (HSA) by using affinity chromatography, with particular emphasis on ultrafast affinity extraction (UAE) and affinity microcolumns. HSA affinity supports were prepared by immobilizing HSA onto diol-bonded silica via Schiff base chemistry and used to prepare affinity microcolumns for chromatographic studies under physiological-like conditions at pH 7.4 and 37.0 °C. UAE studies were performed to investigate the effects of residence time, flow rate, and column configuration on the measured apparent free fraction of warfarin and on the calculated apparent binding parameters. The results showed that the measured apparent free fraction …

Robotic-Assisted Pedicle Screw Placement Achieves High Accuracy And Narrows The Experience Gap: A Preclinical Evaluation, Anna T. Reza, Matthias Walper, Mitchell K. Ng, Paul G. Mastrokostas, Andrew S. Lee, Rafael G. Rafael, Kornelis A. Poelstra, Ratliff K. John, Rajiv K. Sethi, Michael A. Mont

Rothman Institute Papers

To assess a robotic-assisted system versus open manual techniques to: (1) compare pedicle screw accuracy between fellows and attendings with and without robotic assistance, and (2) evaluate executed versus planned trajectory fidelity relative to prior reports. Robotic-assisted spine systems aim to improve the accuracy, reproducibility, and safety of pedicle screw placement. Limited evidence compares outcomes across differing surgeon experience levels. A total of 255 thoracolumbar pedicle screws were placed in synthetic torsos simulating adult degenerative anatomy. Four surgeons (two fellows, two attendings) each placed half their screws using open fluoroscopy-guided techniques and half using a minimally invasive percutaneous approach with …

The Effects Of Bone Health And Variation On Saw Mark Signatures, Lily Ambrose

PCOM Biomedical Studies Student Scholarship

Bone health and structural variation are multifactorial. Population, environment, age, diet, and health influence the overall functional morphology of bone and its response to stressors. Reduced cortical porosity, trabecular thinning, and low bone mass are common indicators of age-related and pathological changes, affecting a significant portion of the population. Because of this, bones encountered in medicolegal investigations often differ from what is considered “normal.” The structural integrity of bone needs to be considered because density influences mechanical strength and response to external forces. In criminal dismemberment cases, forensic scientists analyze saw marks to identify tool class and reconstruct events. While …

Exploring Occupational Exposures And Health Risks Among Long-Haul Truck Drivers: Tobacco Smoke, Cara Harris

ETDs from 2020-2029

Long-haul truck drivers (LHTDs) are exposed to a range of occupational hazards and stressors that threaten their health and well-being. These include, but are not limited to, irregular sleep patterns, fatigue, and chronic exposure to diesel engine exhaust (DEE) and tobacco smoke in the confined spaces of truck cabins. Smoking tobacco cigarettes is often used as a coping mechanism for occupational stressors and nicotine dependence, contributing to a high smoking rate among LHTDs (51%) compared to the general population (19%). Collectively, exposure to DEE and tobacco smoke may have a synergistic effect, increasing LHTD’s risk for lung cancer and other …

Comparable Endogenous Immune Reconstitution, Car-T Expansion, And Cytokine Profiles With Bendamustine Versus Fludarabine/Cyclophosphamide Lymphodepletion, Matthew Schwede, Sarah Hawley, Zachary Reitz, Faith Kierney, Neil Bailey, Tenzin Tsomo, Laiken Lopez, Terry Gilbertson, Christopher A Carney, Doug Kieper, Kelly Paulson, Krish Patel

All Poster Presentations

No abstract provided.

Comparable Endogenous Immune Reconstitution, Car-T Expansion, And Cytokine Profiles With Bendamustine Versus Fludarabine/Cyclophosphamide Lymphodepletion, Matthew Schwede

All Podium Presentations

No abstract provided.

New Graduate Nurses' Experiences Of Leaving The Emergency Department, Gemma John

Walden Dissertations and Doctoral Studies

No abstract provided.

A Decade Of Leadership And Impact: Celebrating 10 Years Of The Ors Spine Section, Makarand V. Risbud

College of Life Sciences Faculty Papers

No abstract provided.

Silk Vista Baby Versus Pipeline Embolization Device For Unruptured Distal Anterior Cerebral Artery Aneurysms: A Multicenter Propensity-Weighted Comparative Study., Valerio Da Ros, Frédéric Clarençon, Adam A. Dmytriw, Pascal Jabbour Md, Marios Psychogios, Peter Sporns, Ajit S. Puri, Ameer E. Hassan, Oktay Algin, Markus A. Möhlenbruch, Mauro Bergui, Oded Goren, Gregoire Boulouis, Takeshi Morimoto, Raoul Pop, Joanna Wk Ho, Virginia Pujol Lereis, Jared Cooper, Giancarlo Salsano, Alessandro Sgreccia, Arturo Consoli, Eytan Raz, Julien Burel, Khawaja Muhammad Baqir Hassan, Zhe Ji, Riitta Rautio, Maria Ruggiero, Federico Sabuzi, Stefania Proietti, Joseph Domenico Gabrieli, Michael Levitt, Antonio Armando Caragliano, Christophe Cognard, Gaultier Marnat, Nicola Limbucci, Mariangela Piano, Alexis Guedon, Andrea Romi, Fortunato Di Caterino, Mykola Vyval, Adrien Guenego, Mohamad Abdalkader, Thanh Nguyen, Vitor Mendes Pereira, Ocilio Ribeiro Goncalves, Erwah Kalsoum, Alessandro Pedicelli, Andrea M Alexandre, Luca Scarcia

Department of Neurosurgery Faculty Papers

BACKGROUND: Flow diversion is effective for unruptured distal anterior cerebral artery (DACA) aneurysms, yet comparative data between the Silk Vista Baby (SVB) and Pipeline Embolization Device (PED) in this challenging territory remain scarce.

METHODS: We conducted a retrospective multicenter study using the CRETA Registry, including consecutive patients with unruptured DACA aneurysms treated with SVB or PED. The primary endpoint was complete angiographic occlusion (O'Kelly-Marotta grade D). Secondary outcomes included procedural characteristics, clinical outcome (modified Rankin Scale), and complications. Overlap weighting was applied to account for non-randomized treatment allocation. Predictors of occlusion were explored using penalized logistic regression. A sensitivity analysis …

Dental Care Utilization Among Sexual And Gender Minority Individuals, Ishita Singh, Oladipo Afolayan, Sarah S Jackson, Irene Tamí-Maury

Faculty, Staff and Student Publications

Objectives: Sexual and gender minority (SGM) individuals can experience notable health disparities, including higher HIV prevalence, social isolation, substance abuse, lack of culturally competent providers, and poorer health outcomes compared to heterosexuals due to stigma and discrimination. This study aims to identify predictors of dental care utilization across sexual minorities using the 2023 TEXAS PRIDE Survey.

Methods: We analyzed data from 517 SGM individuals, assessing sociodemographic characteristics, health behaviors, and recent medical and dental visits. Multivariable logistic regression identified predictors of dental care utilization (i.e., a dental visit in the past year).

Results: Among sexual orientation groups, reported dental care …

Global Youth Development: Challenges And Remedies, Raymond Chimezie

Faculty Publications and Presentations

Young people have enormous potential for growth and innovation, but not all have access to resources and opportunities to explore, achieve their dreams, and contribute immensely to society. Absence or limited opportunities and resources pose great challenges to young people’s aspirations. Through a review of literature and study of some countries young people globally face challenges, though at varying degrees like unemployment, limited access to healthcare, social services, and education; lack of professional support, skills acquisition and retraining, and political exclusion; judicial inequity, loneliness, and poor parenting. There still exist policies, structures, or regulations that encourage racial and ethnic or …

The Back Page: A Dental Road Trip To The Birthplace Of Fluoridation, Chris Smiley Dds

The Journal of the Michigan Dental Association

This historical feature details a visit by ADA and MDA leadership to the Monroe Avenue Water Filtration Plant in Grand Rapids. The plant achieved international significance on January 25, 1945, when Grand Rapids became the first city in the world to implement community water fluoridation. A subsequent 10-year study showed a 65% reduction in childhood tooth decay, establishing fluoridation as a primary public health measure of the 20th century. The article highlights the facility's legacy as the birthplace of a global health initiative.

Cerebral Palsy Detection In Neonatal Intensive Care Unit Infants, Anais Jeday, Shane Tryon, Bryanna Leary, Oleana Jacobson

Biomedical Engineering

The project is conducted in collaboration with Dr. Eric Espinoza-Wade to develop a secure, accurate wearable sensing system for infants in the Neonatal Intensive Care Unit (NICU) who have experienced asymmetric perinatal brain injury (APBI). Infants with APBI are at increased risk for developing unilateral cerebral palsy; however, clinical diagnosis is often delayed until 12–24 months of age, limiting opportunities for early intervention.

The goal of the project is to design a wearable system that securely attaches small, lightweight accelerometers to an infant’s limbs to quantify bilateral limb movement. Triaxial acceleration data will be used to detect movement asymmetries, which …

Artelon Graft Augmentation In Revision Anterior Cruciate Ligament Reconstruction: Surgical Technique Guide., Taylor Manes, Morgan Turnow, Trent Davis, Anthony Perugini, Michael Anderson, Benjamin Taylor

Surgery Articles

INTRODUCTION: Revision anterior cruciate ligament (ACL) procedures are becoming more prevalent. Variable grafts for ACL reconstruction are available, including autograft, allograft, and synthetic graft options. Various augmentation techniques are also available and typically consist of synthetic material such as Artelon graft. This type of synthetic material has been used and shown to produce safe and reliable augmentation in ligament injuries. The purpose of this study was to describe our unique revision ACL reconstruction technique utilizing Artelon graft augmentation and report our short-term results.

MATERIALS AND METHODS: We retrospectively reviewed patients undergoing revision ACL reconstruction with Artelon graft augmentation, a Flexband …

Radiotheranostics For Gynecological Pathologies, Joni Sebastiano

Dissertations, Theses, and Capstone Projects

Molecular imaging, specifically positron emission tomography (PET), is vital for detecting disease and understanding its biological makeup. The exploitation of radiolabeled antibodies for PET imaging has proven to be indispensable to the field of molecular imaging over the last several decades. The development of radioimmunoconjugates for use in immunoPET has not only allowed for the sensitive, specific, and high-resolution detection of disease, but has also enabled a deeper understanding of the disease biology, ultimately guiding more personalized therapeutic strategies. Most typically, this technology is harnessed for the diagnosis and treatment of cancer, however more recently, the field has explored the …

Enhancing Ecological Validity In Speech-In-Noise Testing: Integrating Virtual Reality For A Multisensory Audiological Experience, Paulina Lee

Dissertations, Theses, and Capstone Projects

Despite the remarkable advances in hearing healthcare technology, the speech recognition tests used in routine clinical audiological assessment have remained essentially the same for decades.  Monosyllabic word recognition tests in quiet, such as the Northwestern University Auditory Test No. 6 (NU-6; Tillman & Carhart, 1966), have served as the audiology field’s default measure of speech understanding.  Modern speech-in-noise (SIN) tests, such as the QuickSIN (Killion et al., 2004), have emerged, yet they remain auditory-only, leaving an unignorable gap between what clinical tests measure and how patients communicate in daily life.  The present study examined whether pairing a standard SIN test …

A Comparison Of Manufacturers’ Claims Of Attenuation Rates In Non-Custom Earplugs, Skyler M. Shipley

Dissertations, Theses, and Capstone Projects

Recreational and social environments frequently expose individuals to high intensity noise environments; however, the use of hearing protection devices (HPDs) remains limited. This study evaluated whether non-custom, over-the-counter musicians’ earplugs provide attenuation consistent with manufacturers’ claims and whether cost is associated with performance. Six commercially available earplug models were tested using both human participants and a KEMAR manikin system. Attenuation was measured across frequencies from 250–8000 Hz (octave and inter-octave frequencies) and were tested using different ear tip sizes. Results indicated that several earplugs achieved attenuation levels comparable to or exceeding their advertised noise reduction ratings (NRR), though consistency varied …

Computational Insights Into Nucleosome Dynamics In Epigenetics Using Molecular Dynamics Simulations, Rutika Patel

Dissertations, Theses, and Capstone Projects

Nucleosome core particles (NCP) are the building blocks that form a highly organized and compact chromatin structure. Nucleosomes package DNA in the nucleus of eukaryotic cells. The NCP consists of about 147 base pairs of DNA wrapped around the histone octamer, with 1.65 superhelical turns in a left-handed manner. The histone octamer is composed of two copies of H3, H4, H2A, and H2B. Together with histone H1 and linker DNA, they further assemble into a higher-order chromatin structure. The nucleosome complex is stabilized by electrostatic interactions between positively charged histone residues and the negatively charged DNA backbone. To effectively access …

Ldm-Morph: Latent Diffusion Model Guided Deformable Image Registration, Jiong Wu, Tinsu Pan, Kuang Gong

Faculty, Staff and Student Publications

Deformable image registration plays an essential role in various medical image tasks. Existing deep learning-based deformable registration frameworks primarily utilize convolutional neural networks (CNNs) or Transformers to learn features to predict the deformations. However, the lack of semantic information in the learned features limits the registration performance. Furthermore, the similarity metric of the loss function is often evaluated only in the pixel space, which ignores the matching of high-level anatomical features and can lead to deformation folding. To address these issues, in this work, we proposed LDM-Morph, an unsupervised deformable registration algorithm for medical image registration. LDM-Morph integrated features extracted …

Terminal Digit Preference And Threshold Avoidance In Digital Blood Pressure Measurements During Pregnancy: Secondary Analysis Of Data From The Clip And Precise Cohorts, Peter Dadelszen, Akshdeep Sandhu, Jeffrey Bone, Rahat Qureshi, Olukayode Dada, Ashalata Mallapur, Marleen Temmerman, Marie-Laure Volvert, Joseph Waiswa, Moses Mukhanya, Angela Koech

Centre of Excellence in Women and Child Health

Background:Screening for, detecting, and managing pregnancy hypertension is a core function of antenatal care. To reduce both training requirements and the risks of measurement error in blood pressure (BP) values, automated and semiautomated BP devices have been validated in pregnant women with normal BP and pregnant women with hypertension and introduced for serial antenatal measurement of BP.

Objectives:The study aimed to (1) determine whether or not repeated BP measurements reduced the presence of terminal digit preference and (2) discern whether or not there was evidence of threshold avoidance in the Community-Level Interventions for Preeclampsia (CLIP) trials compared with …

Human Stem Cell-Based Embryo Models: Innovation, Ethics, And Policy, Alfonso Martinez Arias, Thorold Theunissen, Et Al.

2020-Current year OA Pubs

The aim of this White Paper is to establish a foundational framework for research, technological development, and regulation in the emerging field of stem cell-based embryo models (SCBEMs). These models, generated from Pluripotent Stem Cells, are designed to recapitulate essential events in early stages of human development. They have the potential to illuminate the early stages of embryo development and implantation and hold promise as an avenue to address global health challenges, including infertility and pregnancy loss, congenital, neonatal and adult conditions, and the need for organ transplants. While SCBEMs are not a substitute for human embryos, their tractability for …

Expanding The Omop Common Data Model To Support Extracorporeal Life Support Research, Clemens Rieder, Ahmed Said, Et Al.

2020-Current year OA Pubs

OBJECTIVE: Despite the increased availability of electronic health records, open-source standardized data collection to facilitate high-resolution data during extracorporeal life support (ECLS) is lacking. This project aimed to assess the Observational Medical Outcomes Partnership Common Data Model (OMOP CDM) for interoperability to store data sufficiently generated in the context of ECLS and to develop a custom data model expansion in case the OMOP CDM proved insufficient.

DESIGN AND SETTING: The OMOP CDM was analyzed qualitatively by expert consensus for its capability to capture data relative to ECLS as well as the presence of fitting ECLS-related concepts. Database entries necessary to …

Decentralizing Dementia Research To The Us–Mexico Border: The Rio Grande Valley Ad-Rcmar As A Model For Translational Equity, Gladys E. Maestre, John Blangero, Eron Manusov, Gabriel A. De Erausquin, Francisco Fernandez, Silvia Mejia-Arango, Vincent P. Diego, Juan C. Lopez-Alvarenga, Claudia Alaniz, Neyra García, Rosa V. Pirela, Andrew Tsin, Michael Mahaney

School of Medicine Publications

Translational equity means ensuring that diagnostics, treatments, care models, and prevention strategies are developed and implemented so they work for populations with the greatest burden and least access to care. In Alzheimer's disease and related dementias (ADRD), where most evidence derives from highly educated, non-Hispanic White participants at large academic centers, translational equity is critical to prevent misclassification, limited access, and widening disparities and to ensure that underrepresented communities shape how new knowledge moves into practice. Hispanic and other populations in the United States are disproportionately affected by ADRD yet remain underrepresented in research, with gaps especially pronounced in high-poverty …

Deficient Executive Control In Transformer Attention, Suketu Chandrakant Patel, Hongbin Wang, Jin Fan

Publications and Research

Although transformers in large language models (LLMs) effectively implement a self-attention mechanism that has revolutionized natural language processing, they lack an explicit architecture for the executive control of attention found in humans, which is essential for resolving conflicts and selecting relevant information in the presence of competing computations and is critical for adaptive behavior. To investigate the impact of this limitation in LLMs, we employed the classic color Stroop task, widely regarded as the gold standard, to test the executive control of attention in these models. Our results revealed a typical conflict effect of underperformance in terms of accuracy in …

Systemic And Metabolic Control Of Liver Regeneration, Lingzhi Hong, Alessandro Di Federico, Bolun Liu, Alissa J Cooper, Joao V Alessi, Phoebe Clark, Waree Rinsurongkawong, Chingyi Young, Hui Li, Kang Qin, Muhammad Aminu, Valentina Santo, Yasir Elamin, Boris Sepesi, Jeff Lewis, Don L Gibbons, Ara A Vaporciyan, J Jack Lee, Xiuning Le, Jia Wu, Sinchita Roy-Chowdhuri, Mark J Routbort, P Andrew Futreal, John V Heymach, Mark M Awad, Adam J Schoenfeld, Jianjun Zhang, Biagio Ricciuti, Lei Deng, Natalie I Vokes

Faculty, Staff and Student Publications

The liver possesses a unique regenerative capacity, driven by mechanisms that extend beyond classical growth factor signaling. Recent studies underscore the importance of metabolic reprogramming, mitochondrial adaptation, and signaling metabolites in promoting tissue injury repair. Dynamic crosstalk between hepatocytes, non-parenchymal cells, and other organs governs the regenerative process. Spatial compartmentalization within the liver and systemic cues from adipose tissue, the pancreas, the gut, the brain, skeletal muscle, and other organs play critical roles in shaping regenerative outcomes. In this review we discuss how the liver's tissue microenvironment and inter-organ communication networks regulate liver regeneration, providing new insights into the complex …

Investigating The Correlation Between Scleral Spur Angle And Intraocular Lens Tilt, Dylan Mcbee, Karim Kozhaya, Li Wang, Douglas D Koch, Allison J Chen, Mitchell P Weikert

Faculty, Staff and Students Publications

Purpose: To evaluate the correlation between the preoperative vertex-scleral spur angle (Vtx-SSA) and postoperative horizontal intraocular lens (IOL) tilt after routine cataract surgery.

Setting: Cullen Eye Institute, Baylor College of Medicine, Houston, Texas.

Design: Prospective case series.

Methods: This study enrolled patients who underwent uneventful phacoemulsification cataract extraction with IOL implantation. The Anterion and Eyestar 900 swept-source optical coherence tomographers (SS-OCTs) were used to determine Vtx-SSA and lens tilt (crystalline and IOL) measurements, respectively. Tilt vectors were decomposed into orthogonal, vertical, and horizontal components to explore preoperative correlations independently. The Pearson correlation coefficient and linear regression analysis were used to …