Digital Commons Network^™

Are We Ready For Ai-Augmented Generalists?, Jiajie Zhang

Faculty, Staff and Student Publications

Artificial Intelligence (AI) is reshaping medical practice and education by unifying the knowledge of medical specialties and subspecialties into a single, intelligent system. This system functions not only as an integrated knowledge base but also as an active cognitive collaborator. By bridging knowledge gaps beyond the capacity of any individual clinician, AI could enable physicians to function as AI-augmented generalists who can perform certain tasks that require specialist training. These generalists may help mitigate care fragmentation, but realizing their potential will require significant changes in medical education.

Leveraging Data Pipeline And Llm To Advance Patient Safety Event Studies, Fagun Shah, Yue Yu, Yuheng Shi, Yang Gong

Faculty, Staff and Student Publications

Research utilizing the open-access MAUDE database frequently reveals unclear methodologies for extracting and processing medical device report (MDR) data, reducing reproducibility and consistency. By harnessing the OpenFDA API and our MAUDE extract-transform-load (ETL) pipeline that standardizes the extraction and transformation of MDR data, this project explores how a large language model (LLM) can be employed to analyze free-text narratives in MDRs, enhancing the accuracy and efficiency of event categorization. The ETL-LLM approach is demonstrated through MDRs related to endoscopic mucosal resection, with potential applications extending to other devices and patient issues. Additional efforts are necessary to expand the size and …

G-Quadruplex Stabilizer Cx-5461 Effectively Combines With Radiotherapy To Target Α-Thalassemia/Mental Retardation X-Linked-Deficient Malignant Glioma, Sharvari Dharmaiah, Prit Benny Malgulwar, William E Johnson, Brandon A Chen, Vladislav Sharin, Benjamin T Whitfield, Christian Alvarez, Vasudev Tadimeti, Ahsan S Farooqi, Jason T Huse

Faculty, Staff and Student Publications

Background: Inactivation of α-thalassemia/mental retardation X-linked (ATRX) represents a defining molecular feature in large subsets of malignant glioma. ATRX deficiency gives rise to abnormal G-quadruplex (G4) DNA secondary structures, enhancing replication stress and genomic instability. Building on earlier work, we evaluated the extent to which pharmacological G4 stabilization selectively enhances DNA damage and cell death in ATRX-deficient preclinical glioma models.

Methods: Using the G4 stabilizer CX-5461, we treated patient-derived glioma stem cells (GSCs) in vitro and GSC flank and intracranial murine xenografts in vivo to evaluate efficacy as both a single agent and in combination with ionizing radiation (IR), the …

Development And Validation Of A Clinical Risk Model For Postoperative Outcome In Newly Diagnosed Glioblastoma: A Report Of The Rano Resect Group, Philipp Karschnia, Jacob S Young, Gilbert C Youssef, Antonio Dono, Levin Häni, Tommaso Sciortino, Francesco Bruno, Stephanie T Juenger, Nico Teske, Jorg Dietrich, Michael Weller, Michael A Vogelbaum, Martin Van Den Bent, Juergen Beck, Niklas Thon, Jasper K W Gerritsen, Shawn Hervey-Jumper, Daniel P Cahill, Susan M Chang, Roberta Rudà, Lorenzo Bello, Oliver Schnell, Yoshua Esquenazi, Maximilian I Ruge, Stefan J Grau, Raymond Y Huang, Patrick Y Wen, Mitchel S Berger, Annette M Molinaro, Joerg-Christian Tonn

Faculty, Staff and Student Publications

Background: Following surgery, patients with newly diagnosed glioblastoma frequently enter clinical trials. Nuanced risk assessment is warranted to reduce imbalances between study arms. Here, we aimed (I) to analyze the interactive effects of residual tumor with clinical and molecular factors on outcome and (II) to define a postoperative risk assessment tool.

Methods: The response assessment in neuro-oncology (RANO) resect group retrospectively compiled an international, seven-center training cohort of patients with newly diagnosed glioblastoma. The combined associations of residual tumor with molecular or clinical factors and survival were analyzed, and recursive partitioning analysis was performed for risk modeling. The resulting model …

The Lung Cancer Autochthonous Model Gene Expression Database Enables Cross-Study Comparisons Of The Transcriptomic Landscapes Across Mouse Models, Ling Cai, Fangjiang Wu, Qinbo Zhou, Ying Gao, Bo Yao, Ralph J Deberardinis, George K Acquaah-Mensah, Vassilis Aidinis, Jennifer E Beane, Shyam Biswal, Ting Chen, Carla P Concepcion-Crisol, Barbara M Grüner, Deshui Jia, Robert A Jones, Jonathan M Kurie, Min Gyu Lee, Per Lindahl, Yonathan Lissanu, Corina Lorz, David Macpherson, Rosanna Martinelli, Pawel K Mazur, Sarah A Mazzilli, Shinji Mii, Herwig P Moll, Roger A Moorehead, Edward E Morrisey, Sheng Rong Ng, Matthew G Oser, Arun R Pandiri, Charles A Powell, Giorgio Ramadori, Mirentxu Santos, Eric L Snyder, Rocio Sotillo, Kang-Yi Su, Tetsuro Taki, Kekoa Taparra, Phuoc T Tran, Yifeng Xia, J Edward Van Veen, Monte M Winslow, Guanghua Xiao, Charles M Rudin, Trudy G Oliver, Yang Xie, John D Minna

Faculty, Staff and Student Publications

Lung cancer, the leading cause of cancer mortality, exhibits diverse histological subtypes and genetic complexities. Numerous preclinical mouse models have been developed to study lung cancer, but data from these models are disparate, siloed, and difficult to compare in a centralized fashion. In this study, we established the Lung Cancer Autochthonous Model Gene Expression Database (LCAMGDB), an extensive repository of 1,354 samples from 77 transcriptomic datasets covering 974 samples from genetically engineered mouse models (GEMMs), 368 samples from carcinogen-induced models, and 12 samples from a spontaneous model. Meticulous curation and collaboration with data depositors produced a robust and comprehensive database, …

Enhancing Theory-Driven Design And Evaluation Of Patient-Facing Technologies, Yang Gong, Yuheng Shi, Eric Yang, Katie Gahn, Heidi Mason, Yun Jiang

Faculty, Staff and Student Publications

Patient-facing technologies (PFTs) are essential tools for patient-centered outcome research. The current designs of PFTs need solid theoretical support and face challenges with maintenance and sustainability. This paper identifies PFT features and theoretical frameworks that support patient engagement in cancer care. Six prevailing PFT features - feedback & alert, a summary of entries, education materials, aggregated review, dedicated staff, and reminders - were identified in the primary literature, and five theoretical frameworks were adopted to guide the design and evaluation of 20 PFTs. Further research into user-centered design, personalization, and social context in PFT development is recommended to connect system …

Developing A Dashboard To Facilitate Exploration Of Maude Studies, Eric Yang, Yuheng Shi, Yang Gong

Faculty, Staff and Student Publications

The MAUDE database is increasingly used for research. However, the MAUDE publications are scattered in literature databases with fragmented topics, hindering researchers' exploration and identification. To address this issue and enhance the visibility of MAUDE topics in literature, we followed the Gestalt data visualization principles, utilizing the PubMed API and Google Looker Studio to extract, organize, and visualize literature pertinent to MAUDE. The 5-section dashboard exhibits publication trends, cross-filtered publications and authors, geographical distribution of authors and publishers, article scorecards, and donut graphs representing percentages concerning affiliations, journals, publication types, and MeSH terms. This effort created an intuitive, user-friendly dashboard …

Incorporating Latent Survival Trajectories And Covariate Heterogeneity In Time-To-Event Data Analysis: A Joint Mixture Model Approach, Fu-Wen Liang, Wenyaw Chan, Michael D Swartz, Bouthaina S Dabaja

Faculty, Staff and Student Publications

Background: Finite mixture models have been recently applied in time-to-event data to identify subgroups with distinct hazard functions, yet they often assume differing covariate effects on failure times across latent classes but homogeneous covariate distributions. This study aimed to develop a method for analyzing time-to-event data while accounting for unobserved heterogeneity within a mixture modeling framework.

Methods: A joint model was developed to incorporate latent survival trajectories and observed information for the joint analysis of time-to-event outcomes, correlated discrete and continuous covariates, and a latent class variable. It assumed covariate effects on survival times and covariate distributions vary across latent …

Direct Parieto-Occipital Connectivity Of The Amygdala Via The Parahippocampal Segment Of The Cingulum Bundle, Arash Kamali, Kamand Khalaj, Atif Ali, Farbod Khalaj, Diana Kokash, Andres R Gonzalez, Michael A Jacobs, Alireza Akhbardeh, Paul E Schulz, Khader M Hasan

Faculty, Staff and Student Publications

Background

The amygdala is a key structure involved in memory, emotional processing, and sensory integration. While the cortical connectivity of the amygdala with the frontal and temporal lobes has been extensively studied, its direct connections with the parieto-occipital cortices remain underexplored. This study aims to delineate the direct connectivity between the amygdala and the parietal and occipital cortices via the parahippocampal segment of the cingulum bundle.

Methods

High-resolution diffusion-weighted imaging (DWI) tractography was performed on 30 healthy adult brains. Fiber tracking was conducted using three regions of interest (ROIs) placed in the parietal, occipital, and medial temporal lobes. A fractional …

Forward Genetic Screen In Zebrafish Identifies New Fungal Regulators That Limit Host-Protective Candida-Innate Immune Interaction, Bailey A Blair, Emma Bragdon, Gursimran Dhillon, Nnamdi Baker, Lena Stasiak, Mya Muthig, Pedro Miramon, Michael C Lorenz, Robert T Wheeler

Faculty, Staff and Student Publications

Candida is one of the most frequent causes of bloodstream infections, and our first line of defense against these invasive infections is the innate immune system. The early immune response is critical in controlling Candida albicans infection, but C. albicans has several strategies to evade host immune attack. Phagocytosis of C. albicans blocks hyphal growth, limiting host damage and virulence, but how C. albicans limits early recruitment and phagocytosis in vertebrate infection is poorly understood. To study innate immune evasion by intravital imaging, we utilized the transparent larval zebrafish infection model to screen 131 C. albicans mutants for altered …

Identifying Developmental Intellectual Disability As A Sudep Risk Marker From Epilepsy Monitoring Unit Reports Using Large Language Models, Ran Hu, Rashmie Abeysinghe, Gorbachev Jowah, Shiqiang Tao, Samden D. Lhatoo, Guo-Qiang Zhang, Licong Cui

Faculty, Staff and Student Publications

No abstract provided.

Immunotherapy With Nebulized Pattern Recognition Receptor Agonists Restores Severe Immune Paralysis And Improves Outcomes In Mice With Influenza-Associated Pulmonary Aspergillosis, Jezreel Pantaleón García, Sebastian Wurster, Nathaniel D Albert, Uddalak Bharadwaj, Keerthi Bhoda, Vikram K Kulkarni, Mbaya Ntita, Paris Rodríguez Carstens, Madeleine Burch-Eapen, Daniela Covarrubias López, Jania Foncerrada Lizaola, Katherine E Larsen, Lauren M Matula, Seyed J Moghaddam, Yongxing Wang, Dimitrios P Kontoyiannis, Scott E Evans

Faculty, Staff and Student Publications

Influenza-associated pulmonary aspergillosis (IAPA) is a potentially deadly superinfection in patients with influenza pneumonia, especially those with severe disease, underlying immunosuppression, corticosteroid therapy, or requiring intensive care support. Given the high mortality of IAPA, adjunct immunomodulatory strategies remain a critical unmet need. Previously, the desensitization of pattern recognition pathways has been described as a hallmark of IAPA pathogenesis and a predictor of mortality in IAPA patients. Therefore, we studied the impact of nebulized Toll-like receptor 2/6/9 agonists Pam2 CSK4 (Pam2) and CpG oligodeoxynucleotides (ODNs) on infection outcomes and pulmonary immunopathology in a corticosteroid-immunosuppressed murine IAPA model. Mice with IAPA receiving …

Genetic, Transcriptomic, And Epigenomic Insights Into Sjögren's Disease: An Integrative Network Investigation And Immune Diseases Comparison, Nitesh Enduru, Astrid M Manuel, Zhongming Zhao

Faculty, Staff and Student Publications

Sjögren's disease (SjD) is a systemic autoimmune disorder primarily causing dry eyes and mouth. It frequently overlaps with other autoimmune diseases (AIDs), including rheumatoid arthritis (RA) and systemic lupus erythematosus (SLE). However, the genetic basis of SjD remains underexplored, limiting our understanding of its connections to other immune-mediated conditions. In this study, we aimed to identify gene networks associated with SjD through the integration of genetic, transcriptomic, and epigenomic data. We further compared the genetic factors of SjD with other immune-mediated diseases. We analyzed genome-wide association studies (GWAS) summary statistics, DNA methylation, and transcriptomic data using our in-house network-based methods, …

Author Correction: Risk-Stratified Treatment For Drug-Susceptible Pulmonary Tuberculosis, Vincent K Chang, Marjorie Z Imperial, Patrick P J Phillips, Gustavo E Velásquez, Payam Nahid, Andrew Vernon, Ekaterina V Kurbatova, Susan Swindells, Richard E Chaisson, Susan E Dorman, John L Johnson, Marc Weiner, Amina Jindani, Thomas Harrison, Erin E Sizemore, William Whitworth, Wendy Carr, Kia E Bryant, Deron Burton, Kelly E Dooley, Melissa Engle, Pheona Nsubuga, Andreas H Diacon, Nguyen Viet Nhung, Rodney Dawson, Radojka M Savic, Aids Clinical Trial Group, Tuberculosis Trials Consortium

Faculty, Staff and Student Publications

No abstract provided.

Ogg1s326c Variant Frequent In Human Populations Facilitates Inflammatory Responses Due To Its Extended Interaction With Dna Substrate, Jinling Han, Meichen Zhang, Jiakun Ge, Zhihua Ji, Jianyi Zhao, Yinchao Hu, Chunshuang Li, Yaoyao Xue, Xining Li, Haiwang Zhao, Zixu Cui, Miaomiao Tian, Xu Zheng, Dapeng Wang, Jing Wang, Min Wei, Zsolt Radak, Yusaku Nakabeppu, Istvan Boldogh, Xueqing Ba

Faculty, Staff and Student Publications

8-oxoguanine (8-oxoGua) is one of the most frequent forms of oxidative DNA base lesions, repaired by 8-oxoguanine DNA glycosylase 1 (OGG1) via base excision repair (BER) pathway to maintain genome fidelity. The human allelic variant hOGG1^S326C, prevalent in Caucasians and Asians, has been regarded as a susceptibility factor for various diseases, yet its pathogenic mechanism remains elusive. In this study, we demonstrate that Ogg1^S326C/S326C mice exhibit increased and sustained airway inflammation compared with wild-type (WT) Ogg1^S326/S326 mice. Mechanistically, in response to inflammatory stimulation, OGG1S326C undergoes reactive oxygen species-induced dimerization, which impairs its base excision function, but …

Characterizing Spatial Epidemiology In A Heterogeneous Transmission Landscape Using The Spatial Transmission Count Statistic, Leke Lyu, Gabriella Veytsel, Guppy Stott, Spencer Fox, Cody Dailey, Lambodhar Damodaran, Kayo Fujimoto, Pamela Brown, Roger Sealy, Armand Brown, Magdy Alabady, Justin Bahl

Faculty, Staff and Student Publications

Background: Viral genomes contain records of geographic movements and cross-scale transmission dynamics. However, the impact of regional heterogeneity, particularly among rural and urban centers, on viral spread and epidemic trajectory has been less explored due to limited data availability. Intensive and widespread efforts to collect and sequence SARS-CoV-2 viral samples have enabled the development of comparative genomic approaches to reconstruct spatial transmission history and understand viral transmission across different scales.

Methods: We proposed the spatial transmission count statistic that efficiently summarizes the geographic transmission patterns imprinted in viral phylogenies. Guided by a time-scaled tree with ancestral trait states, we identified …

Covid-19 Infection History As A Risk Factor For Early Pregnancy Loss: Results From The Electronic Health Record-Based Southeast Texas Covid And Pregnancy Cohort Study, Micaela N Sandoval, Michelle R Klawans, Mackinsey A Bach, Jennifer Mikhail, Edward A Graviss, Tru Cao, Jacqueline G Parchem, Junaid Husain, Eric Boerwinkle

Faculty, Staff and Student Publications

Background: The effects of SARS-CoV-2 infection before or during pregnancy on pregnancy outcomes are still largely unknown. We hypothesized that COVID-19 in early pregnancy is a risk factor for adverse pregnancy outcomes, particularly miscarriage.

Methods: We examined the relationship between COVID-19 and adverse pregnancy outcomes, including spontaneous abortion, ectopic pregnancy, and preterm delivery in a large, retrospective, electronic health record (EHR)-based cohort, from 2019 to 2023. Generalized estimating equation modeling was performed to identify risk factors for adverse pregnancy outcomes. Study exposures included COVID-19 before pregnancy, COVID-19 during pregnancy, age, race/ethnicity, comorbidity burden, and neighborhood-level social vulnerability.

Results: In the …

Intracellular Inclusions Induced By Patient-Derived And Amplified Α-Synuclein Aggregates Are Morphologically Indistinguishable, Rabab Al-Lahham, Mark E Corkins, Mohd Ishtikhar, Prakruti Rabadia, Santiago Ramirez, Victor Banerjee, Mohammad Shahnawaz

Faculty, Staff and Student Publications

Lewy Body Disease (LBD) and Multiple System Atrophy (MSA) are synucleinopathies with distinct prognoses and neuropathologies, however, with overlapping clinical symptoms. Different disease characteristics are proposed to be determined by distinct conformations of alpha-synuclein (α-Syn) aggregates, which can self-propagate and spread between cells via a prion-like mechanism. The goal of this study is to investigate whether α-syn aggregates amplified from brain and CSF samples of LBD and MSA patients using the Seed Amplification Assay (SAA) maintain α-Syn seeding properties similar to those of α-syn aggregates derived from patients' brains. To address this, SAA-amplified and un-amplified α-Syn aggregates from LBD and …

Investigating Social Network Peer Effects On Hiv Care Engagement Using A Fuzzy-Like Matching Approach: Cross-Sectional Secondary Analysis Of The N2 Cohort Study, Cho-Hee Shrader, Dustin T Duncan, Redd Driver, Juan G Arroyo-Flores, Makella S Coudray, Raymond Moody, Yen-Tyng Chen, Britt Skaathun, Lindsay Young, Natascha Del Vecchio, Kayo Fujimoto, Justin R Knox, Mariano Kanamori, John A Schneider

Faculty, Staff and Student Publications

BACKGROUND: Social network data are essential and informative for public health research and implementation as they provide details on individuals and their social context. For example, health information and behaviors, such as HIV-related prevention and care, may disseminate within a network or across society. By harmonizing egocentric and digital networks, researchers may construct a sociocentric-like "fuzzy" network based on a subgroup of the population.

OBJECTIVE: We aimed to generate a more complete sociocentric-like "fuzzy" network by harmonizing alternative sources of egocentric and digital network data to examine relationships between participants in the Neighborhoods and Networks (N2) cohort study. Further, we …

Rationale For A 4-Month, Parallel-Group, Randomized Controlled Trial To Assess The Feasibility And Efficacy Of A Remotely Delivered Exercise Training Intervention For Hispanics/Latinos With Multiple Sclerosis (Ferla Ms), Victoria A Flores, Stephanie L Silveira, David X Marquez, Dominique Kinnett-Hopkins, Augusto Miravalle, Fabian Sierra-Morales, Zulma Hernández-Peraza, Robert W Motl

Faculty, Staff and Student Publications

Background: Hispanic/Latino individuals with multiple sclerosis (MS) face greater disease burden and comorbidity due to limited healthcare access, underrepresentation in research, and social determinants of health (SDOH). Exercise training could manage health outcomes, but existing intervention research lacks Hispanic/Latino representation.

Methods: We propose a feasibility and efficacy study of a theory-based, remotely delivered exercise training intervention for enhancing health outcomes in Hispanics/Latinos with MS. This study involves a randomized controlled trial (RCT) design and compares an MS-specific exercise training program with an active control condition over a 4-month period in a sample of 50 individuals who self-identified as Hispanic/Latino with …

Empathy And Psychological Outcomes In Informal Caregivers Of Community-Dwelling Older Adults: A Systematic Review And Meta-Analysis, Meng Huo, Thi Vu, Tomiko Yoneda, Jingkai Wei, Bruce Abbott, Joan K Monin

Faculty, Staff and Student Publications

Objectives: Scholars have increasingly recognized the crucial role that empathy plays as informal caregivers provide unpaid care to their older family and friends (i.e., care recipients). Yet, the existing literature exhibits substantial variability in study approaches and results, which limits the extent to which this literature can inform interventions intended to benefit informal caregivers. We sought to address this critical gap by synthesizing research that examined how caregivers' and care recipients' empathy were associated with caregivers' psychological health.

Methods: We conducted a literature search using PubMed, PsycInfo, CINAHL (Cumulative Index to Nursing and Allied Health Literature), EMBASE, and Scopus databases …

Brain And Cerebrospinal Fluid 3d Center Of Mass Shift After Spaceflight, Katherine G Warthen, Stuart H Sater, Larry A Kramer, Khader M Hasan, Michael A Williams, Millennia Young, Brandon R Macias, Steven S Laurie, Bryn A Martin

Faculty, Staff and Student Publications

A subset of long-duration spaceflight astronauts at the International Space Station has been documented to develop spaceflight associated neuro-ocular syndrome (SANS). Researchers have sought to understand SANS by quantification of ocular and brain structural changes thought to be associated with weightlessness induced headward fluid shift. Brain tissue shift and cerebrospinal fluid (CSF) redistribution has been observed as measured by MRI on return to Earth, and not fully quantified. To improve the understanding of this phenomenon, we developed and applied automated methods to quantify 3D center of mass shift within the skull of the extra-axial cerebrospinal fluid (eaCSF) and brain after …

Overconfidence And Financial Risk Tolerance In Older Age, Colleen C Frank, Gary R Mottola, Meiru Chen, Lei Yu, Patricia A Boyle, Gregory R Samanez-Larkin, Kendra L Seaman

Faculty, Staff and Student Publications

Objectives: Excessive financial risk-taking in older age can have harmful consequences as opportunities to recover lost wealth are limited. Understanding financial risk-taking in older age is important for identifying vulnerabilities and developing interventions to empower aging investors to make wise financial choices. In this paper, we explore how overconfidence in financial knowledge affects financial risk-taking among older adults.

Methods: We examine this research question in older adults aged 58-101 (N = 1,242) using data from the Rush Memory and Aging Project (MAP).

Results: After controlling for demographics, overconfidence was associated with self-reported financial risk tolerance such that those who were …

The Association Of Resistin With Metabolic Health And Obesity In A Mexican-American Population, Reem Al-Dallal, Keziah Thomas, Minjae Lee, Aysha Chaudhri, Eleanor Davis, Priyanka Vaidya, Miryoung Lee, Joseph B Mccormick, Susan P Fisher-Hoch, Absalon D Gutierrez

Faculty, Staff and Student Publications

Research on the relationship between resistin levels, metabolic health, and obesity has produced inconsistent findings across different ethnic groups, making it unclear whether lower resistin levels are associated with these conditions in Mexican-Americans. This cross-sectional study investigated the relationship between resistin, metabolic health, and obesity in an adult Mexican-American cohort (n = 1511) using multivariable linear regression analysis. Related adipokines (leptin and adiponectin) were measured simultaneously. Participants were categorized into four groups by metabolic health (healthy/unhealthy) and obesity (obese/non-obese) status. “Metabolically unhealthy” was defined as ≥2 cardiometabolic abnormalities. Obesity was defined as a BMI ≥ 30 kg/m2. We also …

Lifespan Reference Curves For Harmonizing Multi-Site Regional Brain White Matter Metrics From Diffusion Mri, Alyssa H Zhu, Talia M Nir, Shayan Javid, Julio E Villalón-Reina, Amanda L Rodrigue, Lachlan T Strike, Greig I De Zubicaray, Katie L Mcmahon, Margaret J Wright, Sarah E Medland, John Blangero, David C Glahn, Peter Kochunov, Douglas E Williamson, Asta K Håberg, Paul M Thompson, Neda Jahanshad

Faculty, Staff and Student Publications

Age-related white matter (WM) microstructure maturation and decline occur throughout the human lifespan, complementing the process of gray matter development and degeneration. Here, we create normative lifespan reference curves for global and regional WM microstructure by harmonizing diffusion MRI (dMRI)-derived data from ten public datasets (N = 40,898 subjects; age: 3-95 years; 47.6% male). We tested three harmonization methods on regional diffusion tensor imaging (DTI) based fractional anisotropy (FA), a metric of WM microstructure, extracted using the ENIGMA-DTI pipeline. ComBat-GAM harmonization provided multi-study trajectories most consistent with known WM maturation peaks. Lifespan FA reference curves were validated with test-retest data …

Simplified Control Of Neuromuscular Stimulation Systems For Restoration Of Reach With Limb Stiffness As A Modifiable Degree Of Freedom, Tyler R Johnson, Chase A Haddix, A Bolu Ajiboye, Dawn M Taylor

Faculty, Staff and Student Publications

Objective. Brain-controlled functional electrical stimulation (FES) of the upper limb has been used to restore arm function to paralyzed individuals in the lab. Able-bodied individuals naturally modulate limb stiffness throughout movements and in anticipation of perturbations. Our goal is to develop, via simulation, a framework for incorporating stiffness modulation into the currently-used ‘lookup-table-based’ FES control systems while addressing several practical issues: (1) optimizing stimulation across muscles with overlap in function, (2) coordinating stimulation across joints, and (3) minimizing errors due to fatigue. Our calibration process also needs to account for when current spread causes additional muscles to become activated. Approach. …

Gdgse: An Algorithm To Evaluate Pathway Enrichment By Discretizing Gene Expression Values, Jiangti Luo, Qiqi Lu, Mengjiao He, Xiaobo Zhang, Xiang Yang, Xiaosheng Wang

Faculty, Staff and Student Publications

We proposed gdGSE, a novel computational framework for gene set enrichment analysis. Unlike conventional methods that rely on continuous gene expression values, gdGSE employs discretized gene expression profiles to assess pathway activity. This approach effectively mitigates discrepancies caused by data distributions. This algorithm consists of two steps: (1) applying statistical thresholds binarizing gene expression matrix, and (2) converting the binarized gene expression matrix into a gene set enrichment matrix. Our results demonstrated that gdGSE could robustly extract biological insights from a diverse array of simulated and real bulk or single-cell gene expression datasets. Notably, gene set enrichment scores by gdGSE …

Language Mapping During Awake Brain Surgery In A Deaf Patient With A Brain Tumor: Illustrative Case, Ene Chibawanye I, Elizabeth Silva, Kyle Noll, Mariana Bradshaw, Katherine Connelly, Ho-Ling Liu, Ravi Tummala, David Ferson, Frederick F Lang, Vinodh A Kumar

Faculty, Staff and Student Publications

Background: Signed language integrates complex sensorimotor processes involving visual and motor networks. The contribution of language regions such as Broca's and Wernicke's areas during signing is not well established. Here, the authors report the case of a 45-year-old right-handed male with congenital deafness, who communicates using American Sign Language (ASL) and Signed English, presenting with focal seizures. Imaging showed a diffuse infiltrative glioma in the right cerebral hemisphere.

Observations: Remarkably, preoperative functional MRI language activations were bihemispheric and overlapped for both traditional language paradigms and sign paradigms, suggesting that the same cortical regions of the brain are used for language …

Dynamic Vertebral Artery Recanalization As A Cause For Recurrent Posterior Circulation Thromboembolic Stroke: Illustrative Case, Hussein A Zeineddine, Gabriel Galan Castro, Antonio Dono, William W Wroe, Salvatore A D'Amato, Duncan Trimble, Nimer Adeeb, Andrew Barreto, Spiros L Blackburn

Faculty, Staff and Student Publications

Background: Posterior circulation strokes comprise one-fourth of ischemic strokes and can arise from many causes. One rare etiology is transient occlusion of the vertebral artery (VA) with head rotation due to an osteophyte, termed bow hunter's syndrome. The authors present the case of recurrent thromboembolic posterior strokes secondary to transient reopening of an osteophyte-occluded VA.

Observations: A 71-year-old man presented with dizziness and visual changes with a history of prior cervical fusion and myocardial ischemia, controlled with Plavix and aspirin. CT angiography of the neck revealed osteophyte occlusion of the right VA at C4, and MRI revealed a right posterior …

Prognostic Value Of Serum And Bronchoalveolar Lavage Fluid Galactomannan Levels In Invasive Aspergillosis: An 8-Year Experience At A Tertiary Cancer Center, Saliba Wehbe, Anne-Marie Chaftari, Ray Hachem, Hiba Dagher, Andrea Haddad, Ann Philip, Ying Jiang, Ramia Zakhour, Peter Bakht, Jishna Shrestha, Peter Lamie, Robin Sherchan, Jennifer Makhoul, Patrick Chaftari, Issam I Raad

Faculty, Staff and Student Publications

Background: Invasive aspergillosis (IA) is a life-threatening fungal infection that primarily affects immunocompromised individuals and has high morbidity and mortality rates, necessitating timely diagnosis and treatment. This study aimed to evaluate the prognostic utility of serum and bronchoalveolar lavage (BAL) fluid galactomannan levels, as well as galactomannan kinetics, in patients with IA.

Methods: We retrospectively reviewed the medical records of patients who were diagnosed with proven or probable IA from March 2016 to April 2024 at a tertiary cancer center. The collected data included patient characteristics, baseline and peak galactomannan levels in serum and BAL fluid, galactomannan trends, and …