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Articles 38701 - 38730 of 38869
Full-Text Articles in Entire DC Network
Tfeb-Vacuolar Atpase Signaling Regulates Lysosomal Function And Microglial Activation In Tauopathy, Baiping Wang, Heidi Martini-Stoica, Chuangye Qi, Tzu-Chiao Lu, Shuo Wang, Wen Xiong, Yanyan Qi, Yin Xu, Marco Sardiello, Hongjie Li, Hui Zheng
Tfeb-Vacuolar Atpase Signaling Regulates Lysosomal Function And Microglial Activation In Tauopathy, Baiping Wang, Heidi Martini-Stoica, Chuangye Qi, Tzu-Chiao Lu, Shuo Wang, Wen Xiong, Yanyan Qi, Yin Xu, Marco Sardiello, Hongjie Li, Hui Zheng
Center on Aging Staff Publications
Transcription factor EB (TFEB) mediates gene expression through binding to the coordinated lysosome expression and regulation (CLEAR) sequence. TFEB targets include subunits of the vacuolar ATPase (v-ATPase), which are essential for lysosome acidification. Single-nucleus RNA sequencing of wild-type and PS19 (Tau) transgenic mice expressing the P301S mutant tau identified three unique microglia subclusters in Tau mice that were associated with heightened lysosome and immune pathway genes. To explore the lysosome-immune relationship, we specifically disrupted the TFEB-v-ATPase signaling by creating a knock-in mouse line in which the CLEAR sequence of one of the v-ATPase subunits, Atp6v1h, was mutated. CLEAR mutant exhibited …
Metabolink Is A Novel Algorithm For Unveiling Cell-Specific Metabolic Pathways In Longitudinal Datasets, Jared Lichtarge, Gerarda Cappuccio, Soumya Pati, Alfred Kwabena Dei-Ampeh, Senghong Sing, Lihua Ma, Zhandong Liu, Mirjana Maletic-Savatic
Metabolink Is A Novel Algorithm For Unveiling Cell-Specific Metabolic Pathways In Longitudinal Datasets, Jared Lichtarge, Gerarda Cappuccio, Soumya Pati, Alfred Kwabena Dei-Ampeh, Senghong Sing, Lihua Ma, Zhandong Liu, Mirjana Maletic-Savatic
Duncan NRI Faculty and Staff Publications
Introduction: In the rapidly advancing field of 'omics research, there is an increasing demand for sophisticated bioinformatic tools to enable efficient and consistent data analysis. As biological datasets, particularly metabolomics, become larger and more complex, innovative strategies are essential for deciphering the intricate molecular and cellular networks.
Methods: We introduce a pioneering analytical approach that combines Principal Component Analysis (PCA) with Graphical Lasso (GLASSO). This method is designed to reduce the dimensionality of large datasets while preserving significant variance. For the first time, we applied the PCA-GLASSO algorithm (i.e., MetaboLINK) to metabolomics data derived from Nuclear Magnetic Resonance (NMR) spectroscopy …
Insights From Social Media Into Public Perspectives On Investigative Genetic Genealogy, Sara Huston, Diana Madden, Andrea Villanes, Nathan Reed, Whitney Bash Brooks, Christopher Healey, Christi Guerrini
Insights From Social Media Into Public Perspectives On Investigative Genetic Genealogy, Sara Huston, Diana Madden, Andrea Villanes, Nathan Reed, Whitney Bash Brooks, Christopher Healey, Christi Guerrini
Center for Medical Ethics and Health Policy Staff Publications
Social media sites like X (formerly Twitter) increasingly serve as spaces for the public to discuss controversial topics. Social media can spark extreme viewpoints and spread biased or inaccurate information while simultaneously allowing for debate around policy-relevant topics. The arrest of Joseph J. DeAngelo in April 2018 ignited a barrage of social media conversations on how DNA and genetic genealogy led to the suspect. These conversations continued over the following years as policies changed and as the use of the approach expanded. We examined social media coverage of investigative genetic genealogy (IGG) to characterize the volume and temporal patterns in …
Combined Bioinformatic And Splicing Analysis Of Likely Benign Intronic And Synonymous Variants Reveals Evidence For Pathogenicity, Owen R Hirschi, Stephanie A Felker, Surya P Rednam, Kelly L Vallance, D Williams Parsons, Angshumoy Roy, Gregory M Cooper, Sharon E Plon
Combined Bioinformatic And Splicing Analysis Of Likely Benign Intronic And Synonymous Variants Reveals Evidence For Pathogenicity, Owen R Hirschi, Stephanie A Felker, Surya P Rednam, Kelly L Vallance, D Williams Parsons, Angshumoy Roy, Gregory M Cooper, Sharon E Plon
Faculty, Staff and Students Publications
PURPOSE: Clinical variant analysis pipelines likely have poor sensitivity to the effects on splicing from variants beyond 10 to 20 bases of exon-intron boundaries. Here, we demonstrate the value of SpliceAI to inform curation of rare variants previously classified as benign/likely benign (B/LB) under current guidelines.
METHODS: Exome sequencing data from 576 pediatric cancer patients enrolled in the Texas KidsCanSeq study were filtered for intronic or synonymous variants absent from population databases, predicted to alter splicing via SpliceAI (>0.20), and scored >10 by combined annotation-dependent depletion. Rare synonymous or intronic B/LB variants in 61 genes submitted to ClinVar were …
A Dual Target Molecular Magnetic Resonance Imaging Probe For Noninvasive Profiling Of Pathologic Alpha-Synuclein And Microgliosis In A Mouse Model Of Parkinson’S Disease, Xianwei Sun, Andrew Badachhape, Prajwal Bhandari, Jeannie Chin, Ananth Annapragada, Eric Tanifum
A Dual Target Molecular Magnetic Resonance Imaging Probe For Noninvasive Profiling Of Pathologic Alpha-Synuclein And Microgliosis In A Mouse Model Of Parkinson’S Disease, Xianwei Sun, Andrew Badachhape, Prajwal Bhandari, Jeannie Chin, Ananth Annapragada, Eric Tanifum
Faculty, Staff and Students Publications
The pathogenesis of Parkinson’s disease (PD) is characterized by progressive deposition of alpha-synuclein (α-syn) aggregates in dopaminergic neurons and neuroinflammation. Noninvasive in vivo imaging of α-syn aggregate accumulation and neuroinflammation can elicit the underlying mechanisms involved in disease progression and facilitate the development of effective treatment as well as disease diagnosis and prognosis. Here we present a novel approach to simultaneously profile α-syn aggregation and reactive microgliosis in vivo, by targeting oligomeric α-syn in cerebrospinal fluid with nanoparticle bearing a magnetic resonance imaging (MRI), contrast payload. In this proof-of-concept report we demonstrate, in vitro, that microglia and neuroblastoma …
Structure And Funding Of Clinical Informatics Fellowships: A National Survey Of Program Directors, Tushar N Patel, Aaron J Chaise, John J Hanna, Kunal P Patel, Karl M Kochendorfer, Richard J Medford, Dara E Mize, Edward R Melnick, Jonathan D Hron, Kenneth Youens, Deepti Pandita, Michael G Leu, Gregory A Ator, Feliciano Yu, Nicholas Genes, Carrie K Baker, Douglas S Bell, Joshua M Pevnick, Steven A Conrad, Aarti R Chandawarkar, Kendall M Rogers, David C Kaelber, Ila R Singh, Bruce P Levy, John T Finnell, Joseph Kannry, Natalie M Pageler, Vishnu Mohan, Christoph U Lehmann
Structure And Funding Of Clinical Informatics Fellowships: A National Survey Of Program Directors, Tushar N Patel, Aaron J Chaise, John J Hanna, Kunal P Patel, Karl M Kochendorfer, Richard J Medford, Dara E Mize, Edward R Melnick, Jonathan D Hron, Kenneth Youens, Deepti Pandita, Michael G Leu, Gregory A Ator, Feliciano Yu, Nicholas Genes, Carrie K Baker, Douglas S Bell, Joshua M Pevnick, Steven A Conrad, Aarti R Chandawarkar, Kendall M Rogers, David C Kaelber, Ila R Singh, Bruce P Levy, John T Finnell, Joseph Kannry, Natalie M Pageler, Vishnu Mohan, Christoph U Lehmann
Faculty, Staff and Students Publications
BACKGROUND: In 2011, the American Board of Medical Specialties established clinical informatics (CI) as a subspecialty in medicine, jointly administered by the American Board of Pathology and the American Board of Preventive Medicine. Subsequently, many institutions created CI fellowship training programs to meet the growing need for informaticists. Although many programs share similar features, there is considerable variation in program funding and administrative structures.
OBJECTIVES: The aim of our study was to characterize CI fellowship program features, including governance structures, funding sources, and expenses.
METHODS: We created a cross-sectional online REDCap survey with 44 items requesting information on program administration, …
Call The Experts: Identifying Stakeholders In The Long-Term Care Of Youth With Hypospadias, Vinaya P Bhatia, Kristin Ebert, Shannon Cannon, Walid A Farhat, Heidi W Brown, Jane Mahoney, Marisa E Hilliard, Kristina L Penniston
Call The Experts: Identifying Stakeholders In The Long-Term Care Of Youth With Hypospadias, Vinaya P Bhatia, Kristin Ebert, Shannon Cannon, Walid A Farhat, Heidi W Brown, Jane Mahoney, Marisa E Hilliard, Kristina L Penniston
Faculty, Staff and Students Publications
Long-term follow-up for individuals with hypospadias remains a critical area of need, yet evidence-based guidelines for such follow-up are lacking, and the role of involvement of relevant experts is not yet established. Using our hypospadias-specific health-related quality of life conceptual framework and a subsequent qualitative study of prepubertal males and parents of males with hypospadias, we identified potential priorities for long-term follow-up of youth with hypospadias. Using thematic codes from our patient and parent interviews, we searched PubMed for relevant articles and identified the specialties represented by all the authors of these articles. Our search strategy revealed consistent expertise across …
5-Htp Inhibits Eosinophilia Via Intracellular Endothelial 5-Htrs; Snps In 5-Htrs Associate With Asthmatic Lung Function, Matthew T Walker, Jeffrey C Bloodworth, Timothy S Kountz, Samantha L Mccarty, Jeremy E Green, Ryan P Ferrie, Jackson A Campbell, Samantha H Averill, Kenneth B Beckman, Leslie C Grammer, Celeste Eng, Pedro C Avila, Harold J Farber, William Rodriguez-Cintron, Jose R Rodriguez-Santana, Denise Serebrisky, Shannon M Thyne, Max A Seibold, Esteban G Burchard, Rajesh Kumar, Joan M Cook-Mills
5-Htp Inhibits Eosinophilia Via Intracellular Endothelial 5-Htrs; Snps In 5-Htrs Associate With Asthmatic Lung Function, Matthew T Walker, Jeffrey C Bloodworth, Timothy S Kountz, Samantha L Mccarty, Jeremy E Green, Ryan P Ferrie, Jackson A Campbell, Samantha H Averill, Kenneth B Beckman, Leslie C Grammer, Celeste Eng, Pedro C Avila, Harold J Farber, William Rodriguez-Cintron, Jose R Rodriguez-Santana, Denise Serebrisky, Shannon M Thyne, Max A Seibold, Esteban G Burchard, Rajesh Kumar, Joan M Cook-Mills
Faculty, Staff and Students Publications
BACKGROUND: Previous research showed that 5-hydroxytryptophan (5HTP), a metabolic precursor of serotonin, reduces allergic lung inflammation by inhibiting eosinophil migration across endothelial monolayers.
OBJECTIVE: It is unknown if serotonin receptors are involved in mediating this 5HTP function or if serotonin receptor (HTR) single nucleotide polymorphisms (SNPs) associate with lung function in humans.
METHODS: Serotonin receptor subtypes were assessed by qPCR, western blot, confocal microscopy, pharmacological inhibitors and siRNA knockdown. HTR SNPs were assessed in two cohorts.
RESULTS: Pharmacological inhibition or siRNA knockdown of the serotonin receptors HTR1A or HTR1B in endothelial cells abrogated the inhibitory effects of 5HTP on eosinophil …
Using A Collaborative Learning Health System Approach To Improve Disease Activity Outcomes In Children With Juvenile Idiopathic Arthritis In The Pediatric Rheumatology Care And Outcomes Improvement Network, Julia G Harris, Catherine A Bingham, Sheetal S Vora, Cagri Yildirim-Toruner, Michelle Batthish, Danielle R Bullock, Jon M Burnham, Danielle C Fair, Kerry Ferraro, Suhas Ganguli, Mileka Gilbert, Beth S Gottlieb, Olha Halyabar, Melissa M Hazen, Ronald M Laxer, Tzielan C Lee, Alice Liu, Daniel J Lovell, Melissa L Mannion, Edward J Oberle, Nancy Pan, Michael Shishov, Jennifer E Weiss, Esi M Morgan
Using A Collaborative Learning Health System Approach To Improve Disease Activity Outcomes In Children With Juvenile Idiopathic Arthritis In The Pediatric Rheumatology Care And Outcomes Improvement Network, Julia G Harris, Catherine A Bingham, Sheetal S Vora, Cagri Yildirim-Toruner, Michelle Batthish, Danielle R Bullock, Jon M Burnham, Danielle C Fair, Kerry Ferraro, Suhas Ganguli, Mileka Gilbert, Beth S Gottlieb, Olha Halyabar, Melissa M Hazen, Ronald M Laxer, Tzielan C Lee, Alice Liu, Daniel J Lovell, Melissa L Mannion, Edward J Oberle, Nancy Pan, Michael Shishov, Jennifer E Weiss, Esi M Morgan
Faculty, Staff and Students Publications
INTRODUCTION: The Pediatric Rheumatology Care and Outcomes Improvement Network (PR-COIN) is a North American learning health network focused on improving outcomes of children with juvenile idiopathic arthritis (JIA). JIA is a chronic autoimmune disease that can lead to morbidity related to persistent joint and ocular inflammation. PR-COIN has a shared patient registry that tracks twenty quality measures including ten outcome measures of which six are related to disease activity. The network's global aim, set in 2021, was to increase the percent of patients with oligoarticular or polyarticular JIA that had an inactive or low disease activity state from 76% to …
Monoclonal Antibodies In Neuro-Ophthalmology, Caroline C Keehn, Arman Yazdian, Patrick J Hunt, Pamela Davila-Siliezar, Noor A Laylani, Andrew G Lee
Monoclonal Antibodies In Neuro-Ophthalmology, Caroline C Keehn, Arman Yazdian, Patrick J Hunt, Pamela Davila-Siliezar, Noor A Laylani, Andrew G Lee
Faculty, Staff and Students Publications
Neuro-ophthalmologic diseases include a broad range of disorders affecting the afferent and efferent visual pathways. Recently, monoclonal antibody (mAb) therapies have emerged as a promising targeted approach in the management of several of these complex conditions. Here, we describe the mechanism-specific applications and advancements in neuro-ophthalmologic mAb therapies. The application of mAbs in neuro-ophthalmologic diseases highlights our increasing understanding of disease-specific mechanisms in autoimmune conditions such as neuromyelitis optica, thyroid eye disease, and myasthenia gravis. Due to the specificity of mAb therapies, applications in neuro-ophthalmologic diseases have yielded exceptional clinical outcomes, including both reduced rate of relapse and progression to …
Rapid Gene Fusion Testing Using The Nanostring Ncounter Platform To Improve Pediatric Leukemia Diagnoses In Sub-Saharan Africa, Julie M Gastier-Foster, Fredrick Lutwama, Olive Mbabazi, Steven Mlenga, Kennedy Ulaya, Ruth Namazzi, E Faith Hollingsworth, Dolores Lopez-Terrada, Kevin E Fisher, Angshumoy Roy, Carl E Allen, David G Poplack, Rizine Mzikamanda, Nmazuo Ozuah, Peter Wasswa
Rapid Gene Fusion Testing Using The Nanostring Ncounter Platform To Improve Pediatric Leukemia Diagnoses In Sub-Saharan Africa, Julie M Gastier-Foster, Fredrick Lutwama, Olive Mbabazi, Steven Mlenga, Kennedy Ulaya, Ruth Namazzi, E Faith Hollingsworth, Dolores Lopez-Terrada, Kevin E Fisher, Angshumoy Roy, Carl E Allen, David G Poplack, Rizine Mzikamanda, Nmazuo Ozuah, Peter Wasswa
Faculty, Staff and Students Publications
Risk stratification and molecular targeting have been key to increasing cure rates for pediatric cancers in high-income countries. In contrast, precise diagnosis in low-resource settings is hindered by insufficient pathology infrastructure. The Global HOPE program aims to improve outcomes for pediatric cancer in Sub-Saharan Africa (SSA) by building local clinical care and diagnostic capacity. This study aimed to assess the feasibility of implementing molecular assays to improve leukemia diagnoses in SSA. Custom NanoString nCounter gene fusion assays, previously validated in the US, were used to test samples from suspected leukemia patients. The NanoString platform was chosen due to relatively low …
Activation Of Mechanoreceptor Piezo1 Inhibits Enteric Neuronal Growth And Migration, Chioma Moneme, Oluyinka O Olutoye, Michał F Sobstel, Yuwen Zhang, Xinyu Zhou, Jacob L Kaminer, Britney A Hsu, Chengli Shen, Arabinda Mandal, Hui Li, Ling Yu, Swathi Balaji, Sundeep G Keswani, Lily S Cheng
Activation Of Mechanoreceptor Piezo1 Inhibits Enteric Neuronal Growth And Migration, Chioma Moneme, Oluyinka O Olutoye, Michał F Sobstel, Yuwen Zhang, Xinyu Zhou, Jacob L Kaminer, Britney A Hsu, Chengli Shen, Arabinda Mandal, Hui Li, Ling Yu, Swathi Balaji, Sundeep G Keswani, Lily S Cheng
Faculty, Staff and Students Publications
INTRODUCTION: Dysfunction of the enteric nervous system (ENS) is linked to a myriad of gastrointestinal (GI) disorders. Piezo1 is a mechanosensitive ion channel found throughout the GI tract, but its role in the ENS is largely unknown. We hypothesize that Piezo1 plays an important role in the growth and development of the ENS.
METHODS: Enteric neural crest-derived progenitor cells (ENPC) were isolated from adult mouse intestine and propagated in culture as neurospheres. ENPC-derived neurons were then subject to
RESULTS: Though stretch did not cause upregulation of Piezo1 expression in enteric neurons, both stretch and Piezo1 activation produced similar alterations in …
Green Synthesis Of Zinc Oxide Nanoparticles From Althaea Officinalis Flower Extract Coated With Chitosan For Potential Healing Effects On Diabetic Wounds By Inhibiting Tnf-Α And Il-6/Il-1Β Signaling Pathways, Sammar Fathy Elhabal, Nashwa Abdelaal, Saeed Abdul Kareem Saeed Al-Zuhairy, Mohamed Fathi Mohamed Elrefai, Ahmed Mohsen Elsaid Hamdan, Mohamed Mansour Khalifa, Sandra Hababeh, Mohammad Ahmad Khasawneh, Gehad M Khamis, Jakline Nelson, Passant M Mohie, Rania A Gad, Amira Rizk, Soad L Kabil, Mohamed Kandeel El-Ashery, Bhaskara R Jasti, Nahla A Elzohairy, Tayseer Elnawawy, Fatma E Hassan, Mohamed A El-Nabarawi
Green Synthesis Of Zinc Oxide Nanoparticles From Althaea Officinalis Flower Extract Coated With Chitosan For Potential Healing Effects On Diabetic Wounds By Inhibiting Tnf-Α And Il-6/Il-1Β Signaling Pathways, Sammar Fathy Elhabal, Nashwa Abdelaal, Saeed Abdul Kareem Saeed Al-Zuhairy, Mohamed Fathi Mohamed Elrefai, Ahmed Mohsen Elsaid Hamdan, Mohamed Mansour Khalifa, Sandra Hababeh, Mohammad Ahmad Khasawneh, Gehad M Khamis, Jakline Nelson, Passant M Mohie, Rania A Gad, Amira Rizk, Soad L Kabil, Mohamed Kandeel El-Ashery, Bhaskara R Jasti, Nahla A Elzohairy, Tayseer Elnawawy, Fatma E Hassan, Mohamed A El-Nabarawi
Faculty, Staff and Students Publications
BACKGROUND: Diabetes Mellitus is a multisystem chronic pandemic, wound inflammation, and healing are still major issues for diabetic patients who may suffer from ulcers, gangrene, and other wounds from uncontrolled chronic hyperglycemia.
METHOD AND RESULTS: First, develop eco-friendly green Zinc Oxide Nanoparticles (ZnO-NPs) and incorporate them into a 2% chitosan (CS) gel. In-vitro study performed by UV-visible spectrum analysis showed a sharp peak at 390 nm, and Energy-dispersive X-ray (EDX) spectrometry showed a peak of zinc and oxygen. Besides, Fourier transforms infrared (FTIR) was used to qualitatively validate biosynthesized ZnO-NPs, and transmission electron microscope (TEM) showed spherical nanoparticles with mean …
Revolutionizing Psoriasis Topical Treatment: Enhanced Efficacy Through Ceramide/Phospholipid Composite Cerosomes Co-Delivery Of Cyclosporine And Dithranol: In-Vitro, Ex-Vivo, And In-Vivo Studies, Sammar Fathy Elhabal, Nashwa Abdelaal, Saeed A S Al-Zuhairy, Mohamed Fathi Mohamed Elrefai, Mohamed Mansour Khalifa, Mohammad Ahmad Khasawneh, Ahmed Mohsen Elsaid Hamdan, Passant M Mohie, Rania A Gad, Soad L Kabil, Mohamed Kandeel El-Ashery, Bhaskara R Jasti, Nahla A Elzohairy, Nehal Elfar, Tayseer Elnawawy, Fatma E Hassan, Mohamed Ahmed El-Nabarawi
Revolutionizing Psoriasis Topical Treatment: Enhanced Efficacy Through Ceramide/Phospholipid Composite Cerosomes Co-Delivery Of Cyclosporine And Dithranol: In-Vitro, Ex-Vivo, And In-Vivo Studies, Sammar Fathy Elhabal, Nashwa Abdelaal, Saeed A S Al-Zuhairy, Mohamed Fathi Mohamed Elrefai, Mohamed Mansour Khalifa, Mohammad Ahmad Khasawneh, Ahmed Mohsen Elsaid Hamdan, Passant M Mohie, Rania A Gad, Soad L Kabil, Mohamed Kandeel El-Ashery, Bhaskara R Jasti, Nahla A Elzohairy, Nehal Elfar, Tayseer Elnawawy, Fatma E Hassan, Mohamed Ahmed El-Nabarawi
Faculty, Staff and Students Publications
PURPOSE: Improving the treatment of psoriasis is a serious challenge today. Psoriasis is an immune-mediated skin condition affecting 125 million people worldwide. It is commonly treated with cyclosporine-A (CsA) and dithranol (DTH). CsA suppresses the activation of T-cells, immune cells involved in forming psoriatic lesions. Meanwhile, DTH is a potent anti-inflammatory and anti-proliferative drug that effectively reduces the severity of psoriasis symptoms such as redness, scaling, and skin thickness. CsA and DTH belong to BCS class II with limited oral bioavailability. We aim to develop a drug delivery system for topical co-delivery of CsA and DTH, exploring its therapeutic potential. …
Impact Of The Covid-19 Pandemic And Vaccine Availability On Utilization Of Breast Imaging In A Multistate Radiology Practice, Andrew K Hillman, Phil Ramis, Patrick Nielsen, Eric M Rohren
Impact Of The Covid-19 Pandemic And Vaccine Availability On Utilization Of Breast Imaging In A Multistate Radiology Practice, Andrew K Hillman, Phil Ramis, Patrick Nielsen, Eric M Rohren
Faculty, Staff and Students Publications
METHOD: Data were obtained from medical health records across 77 Radiology Partners practices in the US. The data provided us with the total monthly mammography, breast ultrasound, and breast MRI procedures from January 2019 to September 2022. An interrupted time-series (ITS) analysis was conducted to evaluate the effect of the COVID-19 pandemic and the COVID-19 vaccination. We chose March 2020 and December 2020 as critical time points in the pandemic and analyzed trends before and after these dates.
RESULTS: The starting level (at baseline in January 2019) of the total breast imaging procedure volume was estimated at 114,901.5, and this …
Navigating The Challenges Of Initiating Pediatric Device Trials – A Case Study, R Brandon Hunter, Richard C Willson, Balakrishna Haridas, Christine Luk, Kara Toman, Michael J Heffernan, Gwenyth Fischer, Matthew Wettergreen, Chester J Koh
Navigating The Challenges Of Initiating Pediatric Device Trials – A Case Study, R Brandon Hunter, Richard C Willson, Balakrishna Haridas, Christine Luk, Kara Toman, Michael J Heffernan, Gwenyth Fischer, Matthew Wettergreen, Chester J Koh
Faculty, Staff and Students Publications
INTRODUCTION: Pediatric medical devices lag behind adult devices due to economic barriers, smaller patient populations, changing anatomy and physiology of patients, regulatory hurdles, and especially difficulties in executing clinical trials. We investigated the requirements, challenges, associated timeline, and costs of conducting a multi-site pivotal clinical trial for a Class II pediatric physiologic monitoring device.
METHODS: This case study focused on the negotiation of clinical trial agreements (CTAs), budgets, and Institutional Review Board (IRB) processing times for a pediatric device trial. We identified key factors contributing to delays in clinical trial execution and potential best practices to expedite the process while …
Portland State University Promotion And Tenure Guidelines, Portland State University Faculty Senate
Portland State University Promotion And Tenure Guidelines, Portland State University Faculty Senate
Portland State University Promotion and Tenure Guidelines
This record contains Portland State University's Promotion and Tenure Guidelines. The guidelines govern the promotion and evaluation of Faculty at Portland state including but not limited to promotion, tenure, post-tenure review, merit, and more.
How Users' Perceptions Of Friends' Content Influence Their "Annoyance" After Viewing Facebook Posts, Mai-Ly N Steers, Robert E Wickham, Olivia M Tabaczyk, Chelsie M Young, Michelle C Quist, Lindsey B Eikenburg, Jennifer L Bryan
How Users' Perceptions Of Friends' Content Influence Their "Annoyance" After Viewing Facebook Posts, Mai-Ly N Steers, Robert E Wickham, Olivia M Tabaczyk, Chelsie M Young, Michelle C Quist, Lindsey B Eikenburg, Jennifer L Bryan
Faculty, Staff and Students Publications
Social media posts may elicit strong, instantaneous feelings of irritation, or "annoyance." The current experiment investigated how participants' ratings of Facebook posts and their levels of closeness to the poster impacted these feelings. Respondents (N = 476) were asked to rate how irrelevant, inappropriate, mundane, and annoying Facebook posts from an imagined close friend, moderately close friend, and acquaintance were. A cross-classified, Bayesian structural equation model determined the unique contributions at the rater level, target level, and the distinct combination of rater and target at the within level. At the within level, results suggested irrelevance, mundaneness, and inappropriateness of posts …
Structural And Magnetic Properties Of Molecular Beam Epitaxy (Mnsb2te4)X(Sb2te3)1−X Topological Materials With Exceedingly High Curie Temperature, Candice R. Forrester, Christophe Testelin, Kaushini Wickramasinghe, Ido Levy, Dominique Demaille, David Hrabovsky, Xiaxin Ding, Lisa Krusin-Elbaum, Gustavo Lopez, Maria C. Tamargo
Structural And Magnetic Properties Of Molecular Beam Epitaxy (Mnsb2te4)X(Sb2te3)1−X Topological Materials With Exceedingly High Curie Temperature, Candice R. Forrester, Christophe Testelin, Kaushini Wickramasinghe, Ido Levy, Dominique Demaille, David Hrabovsky, Xiaxin Ding, Lisa Krusin-Elbaum, Gustavo Lopez, Maria C. Tamargo
Publications and Research
Tuning the properties of magnetic topological materials is of interest to realize exotic physical phenomena, new quantum phases and quasiparticles, and topological spintronic devices. However, current topological materials exhibit Curie temperature (TC) values far below those needed for practical applications. In recent years, significant progress has been made to control and optimize TC, particularly through defect-engineering of these structures. Most recently, we reported TC values up to 80 K for (MnSb2Te4)x(Sb2Te3)1−x when 0.7 ≤ x ≤ 0.85 by controlling the composition x and the …
Time-Efficient Filtering Of Imaging Polarimetric Data By Checking Physical Realizability Of Experimental Mueller Matrices, Tatiana Novikova, Alexey Ovchinnikov, Gleb Pogudin, Jessica C. Ramella-Roman
Time-Efficient Filtering Of Imaging Polarimetric Data By Checking Physical Realizability Of Experimental Mueller Matrices, Tatiana Novikova, Alexey Ovchinnikov, Gleb Pogudin, Jessica C. Ramella-Roman
Publications and Research
Motivation: Imaging Mueller polarimetry has already proved its potential for biomedicine, remote sensing, and metrology. The real-time applications of this modality require both video rate image acquisition and fast data post-processing algorithms. First, one must check the physical realizability of the experimental Mueller matrices in order to filter out non-physical data, i.e. to test the positive semi-definiteness of the 4 × 4 Hermitian coherency matrix calculated from the elements of corresponding Mueller matrix pixel-wise. For this purpose, we compared the execution time for the calculations of (i) eigenvalues, (ii) Cholesky decomposition, (iii) Sylvester’s criterion, and (iv) coefficients of the characteristic …
It’S About Time, Part Ii: Does Time Poverty Contribute To Inequitable College Outcomes By Gender And Race/Ethnicity?, Claire Wladis, Alyse C. Hachey, Katherine M. Conway
It’S About Time, Part Ii: Does Time Poverty Contribute To Inequitable College Outcomes By Gender And Race/Ethnicity?, Claire Wladis, Alyse C. Hachey, Katherine M. Conway
Publications and Research
Existing research demonstrates gender- and race/ethnicity-based inequities in college outcomes. Separately, recent research suggests a relationship between time poverty and college outcomes for student parents and online students. However, to date, no studies have empirically explored whether differential access to time as a resource for college may explain differential outcomes by gender or race/ethnicity. To address this, this study explored the relationship between time poverty, gender or race/ethnicity, and college outcomes at a large urban public university with two and four year campuses. Time poverty explained a significant proportion of differential outcomes (retention and credit accumulation) by gender and race/ethnicity. …
Grid Culture, Eliot Bates, Arseni Troitski
Grid Culture, Eliot Bates, Arseni Troitski
Publications and Research
In this essay, we provide our initial ethnographic research about lines, which at a superficial level can be considered a platform, but which is also synonymous with a community of 8800 users, and with 606k unique posts authored by these users that in aggregate constitute a discourse network (Aufschreibesysteme, see Kittler 1990). lines—as platform, community, and discourse network—is primarily designed to support the development, documentation and user-generated code efforts specific to a set of hardware synthesis-related objects (the two we will focus on are called Norns and Grid; we’ll discuss what they are and what they do through the subsequent …
Assembling Hyperpop: Genre Formation On Wikipedia, Eliot Bates, Sophie Delphis, Romulo Moraes, Julia Santoli
Assembling Hyperpop: Genre Formation On Wikipedia, Eliot Bates, Sophie Delphis, Romulo Moraes, Julia Santoli
Publications and Research
In this article, we analyze how a music genre is reciprocally defined online, through the crowdsourced ‘facts’ of Wikipedia. What are the traditional implicit and explicit exclusionary practices in this sort of genre formation? And how can internet-specific sociabilities create new exclusionary practices in the process of defining music? By analyzing the edit history of Wikipedia’s ‘hyperpop’ page, we locate ongoing debates, controversies, and contestations that point to shaping forces around online genre formation. These potentially have a huge impact on how hyperpop is understood both inside and outside of the music community. In locating the most active editors of …
Heat-Treated Soybean Meal In Beef Cattle Diets, Grady Gullickson
Heat-Treated Soybean Meal In Beef Cattle Diets, Grady Gullickson
Animal Sciences
Two experiments were conducted to evaluate replacing dried distillers grains with solubles (DDGS) with heat-treated soybean (TSBM) at increasing rates in forage-based diets on steer growth performance, nutrient flow, and digestibility. Experiment 1: 70 angus-based steers were utilized in a generalized randomized block design for an 85-d growing study at the NDSU Beef Cattle Research Complex. Experiment 2: five fistulated Jersey steers fitted with ruminal, duodenal, and ileal cannulas were utilized in a 4 × 5 row column design for 56 d to measure nutrient flow and digestibility. Diets were formulated to replace DDGS, included in the diet at 16% …
The Impact Of Media On Price Paid For Thoroughbred Horses At Auction, Steven Anderson
The Impact Of Media On Price Paid For Thoroughbred Horses At Auction, Steven Anderson
Animal Sciences
It has been said a picture is worth a thousand words, but the economic value of that picture for livestock sales transactions has not been quantified. The objective of this study aimed to evaluate the effect of the presence of media (photos and/or video) on sale prices of Thoroughbreds. Online auction sale data from two U.S. Thoroughbred auction sites were used to compare 18,221 horses that sold and 4,215 horses that failed to meet the minimum desired bid. Sellers that provided media of their horses at auction received approximately $25,000 more for weanlings, $74,000 more for yearlings, and $89,500 more …
Fight, Flight, Freeze: How Access To Support Shapes Tenant Responses To Eviction In Multnomah County, Natalie J. Cholula, Lisa K. Bates, Alex Farrington, Marisa Zapata, Colleen Carroll, Jacen Greene, Hadley Bates
Fight, Flight, Freeze: How Access To Support Shapes Tenant Responses To Eviction In Multnomah County, Natalie J. Cholula, Lisa K. Bates, Alex Farrington, Marisa Zapata, Colleen Carroll, Jacen Greene, Hadley Bates
Urban Studies and Planning Faculty Publications and Presentations
Facing eviction is a traumatic event that forces tenants into a fight, flight or freeze response. Our focus groups with Multnomah County tenants reveal that their responses to eviction are directly shaped by their access to support. Many tenants are unable to access formal support and therefore respond to eviction by freezing up or fleeing their home. Conversely, tenants who can access formal support—including rental assistance or legal assistance—exhibit a fight response, leveraging external support to challenge or avoid their eviction.
Shame And History, Bennett B. Gilbert
Shame And History, Bennett B. Gilbert
University Studies Faculty Publications and Presentations
If history—our past, the sum of our thoughts, passions, and deeds—is so pervasive, influential, and meaningful, why then do we lose sight of it? Why do we not gain good values from it? And if it is part of our existential core, why then do we so often fail to ravel it into our deliberations?
I propose that very often and to a great degree it is shame that separates us from history. Shame: garrulous, compulsive, intense, omnivorous. A shamed person pushes away the experiences that shame her, thus cutting off the past.
Impacts Of Sex Work Criminalization On Sex Workers In Oregon: A Pilot Study, Stephanie Wahab, Katie Shammel
Impacts Of Sex Work Criminalization On Sex Workers In Oregon: A Pilot Study, Stephanie Wahab, Katie Shammel
School of Social Work Faculty Publications and Presentations
Executive Summary
Context for the Study
In July, 2023, Oregon legislators voted to fund research exploring the impacts of the criminalization of sex work in Oregon. Unfortunately, the Governor vetoed the budget item, stating that the private sector should fund this type of public health research and noting the need for additional public discussion about the issue. To date, there have been no attempts to study the impacts of prostitution laws on the people most impacted by them in Oregon. The research presented in this report seeks to address this gap.
This qualitative pilot study was designed to better understand …
Looking At The Past To Change The Future: Showcasing Featured Collections, Building Communities, And Co-Creating, Sherry Buchanan
Looking At The Past To Change The Future: Showcasing Featured Collections, Building Communities, And Co-Creating, Sherry Buchanan
Library Faculty and Staff Publications and Presentations
Academic libraries have the opportunity and the responsibility to promote and advance content that creates transformative and iterative learning opportunities. To that end, and in an effort to build communities and facilitate co-creation, Portland State University showcases three main Featured Collections in our open access repository, PDXScholar: Climate Justice, COVID-19, and Racial and Gender Equity, with a fourth pilot collection—Student Work: An Open Showcase of Outstanding Student-Created Research & Creative Work—under development. The collections include a broad range of audiovisual materials, such as podcasts and webinar series, as well as sustainability and equity work, student-created content, and numerous future-focused multidisciplinary …
The Legal Metaverse And Comparative Taxonomy: A Reappraisal, Ugo Mattei
The Legal Metaverse And Comparative Taxonomy: A Reappraisal, Ugo Mattei
Faculty Scholarship
The present Article revisits my “Three Patterns of Law: Taxonomy and Change in the World’s Legal Systems”—published in this very Journal a quarter century ago—which acknowledged the ideological nature of the law versus politics distinction and posited taxonomy as a means for understanding law. The original article classified law into professional law, political law, and traditional law, and heralded the tentative and dynamic natures of such classification. The two purposes of the present Article are to (i) reflect on legal transformations that have since occurred as reactions to global geopolitical, technological, and economic changes, and (ii) interrogate whether epistemological assumptions …