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2022

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Anxiety Disorders In Children And Adolescents, Alicia Kowalchuk, Sandra J Gonzalez, Roger J Zoorob Dec 2022

Anxiety Disorders In Children And Adolescents, Alicia Kowalchuk, Sandra J Gonzalez, Roger J Zoorob

Faculty, Staff and Students Publications

Anxiety disorders are the most common psychiatric conditions in children and adolescents, affecting nearly 1 in 12 children and 1 in 4 adolescents. Anxiety disorders include specific phobias, social anxiety disorder, separation anxiety disorder, agoraphobia, panic disorder, and generalized anxiety disorder. Risk factors include parental history of anxiety disorders, socioeconomic stressors, exposure to violence, and trauma. The U.S. Preventive Services Task Force recommends screening for anxiety disorders in children eight years and older; there is insufficient evidence to support screening in children younger than eight years. Symptoms of anxiety disorders in children and adolescents are similar to those in adults …


A Narrative Review Of Sex And Gender Differences In Sleep Disordered Breathing: Gaps And Opportunities, Margaret Bublitz, Nour Adra, Leen Hijazi, Fidaa Shaib, Hrayr Attarian, Ghada Bourjeily Dec 2022

A Narrative Review Of Sex And Gender Differences In Sleep Disordered Breathing: Gaps And Opportunities, Margaret Bublitz, Nour Adra, Leen Hijazi, Fidaa Shaib, Hrayr Attarian, Ghada Bourjeily

Faculty, Staff and Students Publications

Introduction: Sleep disordered breathing (SDB) is a common condition, associated with multiple comorbidities including cardiovascular and metabolic disease. It has been previously established that SDB is more prevalent in men than women, shifting the literature's focus away from the latter population. As such, underdiagnosis, and thus undertreatment, of SDB in women exists.

Methods: To establish the differences in prevalence, clinical presentation, and pathophysiology of SDB between the two sexes, a narrative review of the current literature was performed.

Results: Rates of SDB are higher among men, likely driven by differences in symptom presentation between men and women, with women presenting …


Loss Of Wnt4 In The Gubernaculum Causes Unilateral Cryptorchidism And Fertility Defects, Abhishek Seth, Juan C Bournat, Olga Medina-Martinez, Armando Rivera, Joshua Moore, Hunter Flores, Jill A Rosenfeld, Liya Hu, Carolina J Jorgez Dec 2022

Loss Of Wnt4 In The Gubernaculum Causes Unilateral Cryptorchidism And Fertility Defects, Abhishek Seth, Juan C Bournat, Olga Medina-Martinez, Armando Rivera, Joshua Moore, Hunter Flores, Jill A Rosenfeld, Liya Hu, Carolina J Jorgez

Faculty, Staff and Students Publications

Undescended testis (UDT) affects 6% of male births. Despite surgical correction, some men with unilateral UDT may experience infertility with the contralateral descended testis (CDT) showing no A-dark spermatogonia. To improve our understanding of the etiology of infertility in UDT, we generated a novel murine model of left unilateral UDT. Gubernaculum-specific Wnt4 knockout (KO) mice (Wnt4-cKO) were generated using retinoic acid receptor β2-cre mice and were found to have a smaller left-unilateral UDT. Wnt4-cKO mice with abdominal UDT had an increase in serum follicle-stimulating hormone and luteinizing hormone and an absence of germ cells in the undescended testicle. Wnt4-cKO mice …


K27m In Canonical And Noncanonical H3 Variants Occurs In Distinct Oligodendroglial Cell Lineages In Brain Midline Gliomas, Selin Jessa, Abdulshakour Mohammadnia, Ashot S Harutyunyan, Maud Hulswit, Srinidhi Varadharajan, Hussein Lakkis, Nisha Kabir, Zahedeh Bashardanesh, Steven Hébert, Damien Faury, Maria C Vladoiu, Samantha Worme, Marie Coutelier, Brian Krug, Augusto Faria Andrade, Manav Pathania, Andrea Bajic, Alexander G Weil, Benjamin Ellezam, Jeffrey Atkinson, Roy W R Dudley, Jean-Pierre Farmer, Sebastien Perreault, Benjamin A Garcia, Valérie Larouche, Mathieu Blanchette, Livia Garzia, Aparna Bhaduri, Keith L Ligon, Pratiti Bandopadhayay, Michael D Taylor, Stephen C Mack, Nada Jabado, Claudia L Kleinman Dec 2022

K27m In Canonical And Noncanonical H3 Variants Occurs In Distinct Oligodendroglial Cell Lineages In Brain Midline Gliomas, Selin Jessa, Abdulshakour Mohammadnia, Ashot S Harutyunyan, Maud Hulswit, Srinidhi Varadharajan, Hussein Lakkis, Nisha Kabir, Zahedeh Bashardanesh, Steven Hébert, Damien Faury, Maria C Vladoiu, Samantha Worme, Marie Coutelier, Brian Krug, Augusto Faria Andrade, Manav Pathania, Andrea Bajic, Alexander G Weil, Benjamin Ellezam, Jeffrey Atkinson, Roy W R Dudley, Jean-Pierre Farmer, Sebastien Perreault, Benjamin A Garcia, Valérie Larouche, Mathieu Blanchette, Livia Garzia, Aparna Bhaduri, Keith L Ligon, Pratiti Bandopadhayay, Michael D Taylor, Stephen C Mack, Nada Jabado, Claudia L Kleinman

Faculty, Staff and Students Publications

Canonical (H3.1/H3.2) and noncanonical (H3.3) histone 3 K27M-mutant gliomas have unique spatiotemporal distributions, partner alterations and molecular profiles. The contribution of the cell of origin to these differences has been challenging to uncouple from the oncogenic reprogramming induced by the mutation. Here, we perform an integrated analysis of 116 tumors, including single-cell transcriptome and chromatin accessibility, 3D chromatin architecture and epigenomic profiles, and show that K27M-mutant gliomas faithfully maintain chromatin configuration at developmental genes consistent with anatomically distinct oligodendrocyte precursor cells (OPCs). H3.3K27M thalamic gliomas map to prosomere 2-derived lineages. In turn, H3.1K27M ACVR1-mutant pontine gliomas uniformly mirror early ventral …


A First-Tier Framework For Assessing Toxicological Risk From Vaporized Cannabis Concentrates, Shawna Vreeke, David M. Faulkner, Robert Strongin, Echoleah Rufer Dec 2022

A First-Tier Framework For Assessing Toxicological Risk From Vaporized Cannabis Concentrates, Shawna Vreeke, David M. Faulkner, Robert Strongin, Echoleah Rufer

Chemistry Faculty Publications and Presentations

Vaporization is an increasingly prevalent means to consume cannabis, but there is little guidance for manufacturers or regulators to evaluate additive safety. This paper presents a first-tier framework for regulators and cannabis manufacturers without significant toxicological expertise to conduct risk assessments and prioritize additives in cannabis concentrates for acceptance, elimination, or further evaluation. Cannabinoids and contaminants (e.g., solvents, pesticides, etc.) are excluded from this framework because of the complexity involved in their assessment; theirs would not be a first-tier toxicological assessment. Further, several U.S. state regulators have provided guidance for major cannabinoids and contaminants. Toxicological risk assessment of cannabis concentrate …


Outcomes Of Audio-Instructed And Video-Instructed Dispatcher-Assisted Cardiopulmonary Resuscitation: A Systematic Review And Meta-Analysis, Karol Bielski, Bernd W Böttiger, Michal Pruc, Aleksandra Gasecka, Mariusz Sieminski, Milosz J Jaguszewski, Jacek Smereka, Natasza Gilis-Malinowska, Frank W Peacock, Lukasz Szarpak Dec 2022

Outcomes Of Audio-Instructed And Video-Instructed Dispatcher-Assisted Cardiopulmonary Resuscitation: A Systematic Review And Meta-Analysis, Karol Bielski, Bernd W Böttiger, Michal Pruc, Aleksandra Gasecka, Mariusz Sieminski, Milosz J Jaguszewski, Jacek Smereka, Natasza Gilis-Malinowska, Frank W Peacock, Lukasz Szarpak

Faculty, Staff and Students Publications

BACKGROUND: The present meta-analysis of clinical and simulation trials aimed to compare video-instructed dispatcher-assisted bystander cardiopulmonary resuscitation (V-DACPR) with conventional audio-instructed dispatcher-assisted bystander cardiopulmonary resuscitation (C-DACPR).

METHODS: We searched PubMed, Embase, Web of Science, Cochrane Collaboration databases and Scopus from inception until June 10, 2021. The primary outcomes were the prehospital return of spontaneous circulation (ROSC), survival to hospital discharge, and survival to hospital discharge with a good neurological outcome for clinical trials, and chest compression quality for simulation trials. Odds ratios (ORs) and mean differences (MDs) with 95% confidence intervals (CIs) indicated the pooled effect. The analyses were performed …


The Genetic Risk Factor Cel-Hyb1 Causes Proteotoxicity And Chronic Pancreatitis In Mice, Karianne Fjeld, Steven J Wilhelm, Jianguo Lin, Xunjun Xiao, Mark E Lowe, Et Al. Dec 2022

The Genetic Risk Factor Cel-Hyb1 Causes Proteotoxicity And Chronic Pancreatitis In Mice, Karianne Fjeld, Steven J Wilhelm, Jianguo Lin, Xunjun Xiao, Mark E Lowe, Et Al.

2020-Current year OA Pubs

BACKGROUND & AIMS: The CEL gene encodes the digestive enzyme carboxyl ester lipase. CEL-HYB1, a hybrid allele of CEL and its adjacent pseudogene CELP, is a genetic variant suggested to increase the risk of chronic pancreatitis (CP). Our aim was to develop a mouse model for CEL-HYB1 that enables studies of pancreatic disease mechanisms.

METHODS: We established a knock-in mouse strain where the variable number of tandem repeat (VNTR) region of the endogenous mouse Cel gene was substituted with the mutated VNTR of the human CEL-HYB1 allele. Heterozygous and homozygous Cel-HYB1 mice and littermate wildtype controls were characterized with respect …


Controversies In Spine Research: Organ Culture Versus In Vivo Models For Studies Of The Intervertebral Disc, Shirley N Tang, Andres F Bonilla, Nadeen O Chahine, Aimee C Colbath, Jeremiah T Easley, Sibylle Grad, Lisbet Haglund, Christine L Le Maitre, Victor Leung, Annette M Mccoy, Devina Purmessur, Simon Y Tang, Stephan Zeiter, Lachlan J Smith Dec 2022

Controversies In Spine Research: Organ Culture Versus In Vivo Models For Studies Of The Intervertebral Disc, Shirley N Tang, Andres F Bonilla, Nadeen O Chahine, Aimee C Colbath, Jeremiah T Easley, Sibylle Grad, Lisbet Haglund, Christine L Le Maitre, Victor Leung, Annette M Mccoy, Devina Purmessur, Simon Y Tang, Stephan Zeiter, Lachlan J Smith

2020-Current year OA Pubs

Intervertebral disc degeneration is a common cause of low back pain, the leading cause of disability worldwide. Appropriate preclinical models for intervertebral disc research are essential to achieving a better understanding of underlying pathophysiology and for the development, evaluation, and translation of more effective treatments. To this end, in vivo animal and ex vivo organ culture models are both widely used by spine researchers; however, the relative strengths and weaknesses of these two approaches are a source of ongoing controversy. In this article, members from the Spine and Preclinical Models Sections of the Orthopedic Research Society, including experts in both …


Prolonged Dexamethasone Exposure Enhances Zebrafish Lateral-Line Regeneration But Disrupts Mitochondrial Homeostasis And Hair Cell Function, Allison L Saettele, Hiu-Tung C Wong, Katie S Kindt, Mark E Warchol, Lavinia Sheets Dec 2022

Prolonged Dexamethasone Exposure Enhances Zebrafish Lateral-Line Regeneration But Disrupts Mitochondrial Homeostasis And Hair Cell Function, Allison L Saettele, Hiu-Tung C Wong, Katie S Kindt, Mark E Warchol, Lavinia Sheets

2020-Current year OA Pubs

The synthetic glucocorticoid dexamethasone is commonly used to treat inner ear disorders. Previous work in larval zebrafish has shown that dexamethasone treatment enhances hair cell regeneration, yet dexamethasone has also been shown to inhibit regeneration of peripheral nerves after lesion. We therefore used the zebrafish model to determine the impact of dexamethasone treatment on lateral-line hair cells and primary afferents. To explore dexamethasone in the context of regeneration, we used copper sulfate (CuSO


Guidelines For Assessment Of Cardiac Electrophysiology And Arrhythmias In Small Animals, Crystal M Ripplinger, Stacey L Rentschler, Et Al. Dec 2022

Guidelines For Assessment Of Cardiac Electrophysiology And Arrhythmias In Small Animals, Crystal M Ripplinger, Stacey L Rentschler, Et Al.

2020-Current year OA Pubs

Cardiac arrhythmias are a major cause of morbidity and mortality worldwide. Although recent advances in cell-based models, including human-induced pluripotent stem cell-derived cardiomyocytes (iPSC-CM), are contributing to our understanding of electrophysiology and arrhythmia mechanisms, preclinical animal studies of cardiovascular disease remain a mainstay. Over the past several decades, animal models of cardiovascular disease have advanced our understanding of pathological remodeling, arrhythmia mechanisms, and drug effects and have led to major improvements in pacing and defibrillation therapies. There exist a variety of methodological approaches for the assessment of cardiac electrophysiology and a plethora of parameters may be assessed with each approach. …


A Systematic Scoping Review Of Faropenem And Other Oral Penems: Treatment Of Enterobacterales Infections, Development Of Resistance And Cross-Resistance To Carbapenems, Sumanth Gandra, Satoshi Takahashi, Fanny S Mitrani-Gold, Aruni Mulgirigama, Diogo A Ferrinho Dec 2022

A Systematic Scoping Review Of Faropenem And Other Oral Penems: Treatment Of Enterobacterales Infections, Development Of Resistance And Cross-Resistance To Carbapenems, Sumanth Gandra, Satoshi Takahashi, Fanny S Mitrani-Gold, Aruni Mulgirigama, Diogo A Ferrinho

2020-Current year OA Pubs

BACKGROUND: Antimicrobial resistance is an urgent global healthcare concern. Beyond carbapenems as broad-spectrum, often 'last resort' antibiotics, oral penem antibiotics currently are approved only in Japan and India, used for the treatment of indications including urinary tract infections (UTIs). Exploring oral penem use to better understand the impact of antibiotic resistance on public health would help inform the management of infectious diseases, including UTIs.

SCOPING REVIEW METHODOLOGY: This scoping review investigated the impact of faropenem and other oral penems on Enterobacterales infection treatment and evaluated evidence for faropenem resistance and cross-resistance to carbapenems. PubMed, Embase, J-STAGE and CiNii were searched …


Sources Of Copper Into The European Aquatic Environment, Sean Comber, Genevieve Deviller, Iain Wilson, Adam Peters, Graham Merrington, Pasquale Borrelli, Stijn Baken Dec 2022

Sources Of Copper Into The European Aquatic Environment, Sean Comber, Genevieve Deviller, Iain Wilson, Adam Peters, Graham Merrington, Pasquale Borrelli, Stijn Baken

School of Geography, Earth and Environmental Sciences

Chemical contamination from point source discharges in developed (resource-rich) countries has been widely regulated and studied for decades; however, diffuse sources are largely unregulated and widespread. In the European Union (EU), large dischargers report releases of some chemicals, yet little is known of total emissions (point and diffuse) and their relative significance. We estimated copper loadings from all significant sources including industry, sewage treatment plants, surface runoff (from traffic, architecture, and atmospheric deposition), septic tanks, agriculture, mariculture, marine transport (antifoulant leaching), and natural processes. A combination of European datasets, literature, and industry data were used to generate export coefficients. These …


Chronic Cochlear Implantation With And Without Electric Stimulation In A Mouse Model Induces Robust Cochlear Influx Of Cx3cr1+/Gfp Macrophages, Alexander D Claussen, René Vielman Quevedo, Jonathon R Kirk, Timon Higgins, Brian Mostaert, Muhammad Taifur Rahman, Jacob Oleson, Reyna Hernandez, Keiko Hirose, Marlan R Hansen Dec 2022

Chronic Cochlear Implantation With And Without Electric Stimulation In A Mouse Model Induces Robust Cochlear Influx Of Cx3cr1+/Gfp Macrophages, Alexander D Claussen, René Vielman Quevedo, Jonathon R Kirk, Timon Higgins, Brian Mostaert, Muhammad Taifur Rahman, Jacob Oleson, Reyna Hernandez, Keiko Hirose, Marlan R Hansen

2020-Current year OA Pubs

BACKGROUND: Cochlear implantation is an effective auditory rehabilitation strategy for those with profound hearing loss, including those with residual low frequency hearing through use of hybrid cochlear implantation techniques. Post-mortem studies demonstrate the nearly ubiquitous presence of intracochlear fibrosis and neo-ossification following cochlear implantation. Current evidence suggests post-implantation intracochlear fibrosis is associated with delayed loss of residual acoustic hearing in hybrid cochlear implant (CI) recipients and may also negatively influence outcomes in traditional CI recipients. This study examined the contributions of surgical trauma, foreign body response and electric stimulation to intracochlear fibrosis and the innate immune response to cochlear implantation …


The Zona Incerta In Control Of Novelty Seeking And Investigation Across Species, Ilya E Monosov, Takaya Ogasawara, Suzanne N Haber, J Alexander Heimel, Mehran Ahmadlou Dec 2022

The Zona Incerta In Control Of Novelty Seeking And Investigation Across Species, Ilya E Monosov, Takaya Ogasawara, Suzanne N Haber, J Alexander Heimel, Mehran Ahmadlou

2020-Current year OA Pubs

Many organisms rely on a capacity to rapidly replicate, disperse, and evolve when faced with uncertainty and novelty. But mammals do not evolve and replicate quickly. They rely on a sophisticated nervous system to generate predictions and select responses when confronted with these challenges. An important component of their behavioral repertoire is the adaptive context-dependent seeking or avoiding of perceptually novel objects, even when their values have not yet been learned. Here, we outline recent cross-species breakthroughs that shed light on how the zona incerta (ZI), a relatively evolutionarily conserved brain area, supports novelty-seeking and novelty-related investigations. We then conjecture …


Differential Roles Of Aβ42/40, P-Tau231 And P-Tau217 For Alzheimer's Trial Selection And Disease Monitoring, Nicholas J Ashton, Yan Li, Randall J Bateman, Et Al. Dec 2022

Differential Roles Of Aβ42/40, P-Tau231 And P-Tau217 For Alzheimer's Trial Selection And Disease Monitoring, Nicholas J Ashton, Yan Li, Randall J Bateman, Et Al.

2020-Current year OA Pubs

Blood biomarkers indicative of Alzheimer's disease (AD) pathology are altered in both preclinical and symptomatic stages of the disease. Distinctive biomarkers may be optimal for the identification of AD pathology or monitoring of disease progression. Blood biomarkers that correlate with changes in cognition and atrophy during the course of the disease could be used in clinical trials to identify successful interventions and thereby accelerate the development of efficient therapies. When disease-modifying treatments become approved for use, efficient blood-based biomarkers might also inform on treatment implementation and management in clinical practice. In the BioFINDER-1 cohort, plasma phosphorylated (p)-tau231 and amyloid-β42/40 ratio …


The Role Of Inputs Of Marine Wrack And Carrion In Sandy-Beach Ecosystems: A Global Review, Glenn A. Hyndes, Emma L. Berdan, Cristian Duarte, Jenifer E. Dugan, Kyle A. Emery, Peter A. Hamback, Christopher J. Henderson, David M. Hubbard, Mariano Lastra, Miguel A. Mateo, Andrew Olds, Thomas A. Schlacher Dec 2022

The Role Of Inputs Of Marine Wrack And Carrion In Sandy-Beach Ecosystems: A Global Review, Glenn A. Hyndes, Emma L. Berdan, Cristian Duarte, Jenifer E. Dugan, Kyle A. Emery, Peter A. Hamback, Christopher J. Henderson, David M. Hubbard, Mariano Lastra, Miguel A. Mateo, Andrew Olds, Thomas A. Schlacher

Research outputs 2022 to 2026

Sandy beaches are iconic interfaces that functionally link the ocean with the land via the flow of organic matter from the sea. These cross-ecosystem fluxes often comprise uprooted seagrass and dislodged macroalgae that can form substantial accumulations of detritus, termed ‘wrack’, on sandy beaches. In addition, the tissue of the carcasses of marine animals that regularly wash up on beaches form a rich food source (‘carrion’) for a diversity of scavenging animals. Here, we provide a global review of how wrack and carrion provide spatial subsidies that shape the structure and functioning of sandy-beach ecosystems (sandy beaches and adjacent surf …


Editorial: Tropicalization In Seagrasses: Shifts In Ecosystem Function, Glenn A. Hyndes, Jessie C. Jarvis, Kenneth L. Heck Dec 2022

Editorial: Tropicalization In Seagrasses: Shifts In Ecosystem Function, Glenn A. Hyndes, Jessie C. Jarvis, Kenneth L. Heck

Research outputs 2022 to 2026

Seagrass meadows form highly productive and diverse ecosystems that provide a range of ecosystem services along coasts of most continents (Barbier et al., 2011; Nordlund et al., 2016), yet they continue to experience large losses through direct and indirect human disturbances (Waycott et al., 2009; Duarte et al., 2018). Like other coastal ecosystems, including coral reefs and kelp forests, seagrasses are showing strong negative responses to elevated ocean temperatures and heatwaves, in which rising temperatures exceed their thresholds for survival [...].


A Sarm1-Mitochondrial Feedback Loop Drives Neuropathogenesis In A Charcot-Marie-Tooth Disease Type 2a Rat Model, Yurie Sato-Yamada, Amy Strickland, Yo Sasaki, Joseph Bloom, Aaron Diantonio, Jeffrey Milbrandt Dec 2022

A Sarm1-Mitochondrial Feedback Loop Drives Neuropathogenesis In A Charcot-Marie-Tooth Disease Type 2a Rat Model, Yurie Sato-Yamada, Amy Strickland, Yo Sasaki, Joseph Bloom, Aaron Diantonio, Jeffrey Milbrandt

2020-Current year OA Pubs

Charcot-Marie-Tooth disease type 2A (CMT2A) is an axonal neuropathy caused by mutations in the mitofusin 2 (MFN2) gene. MFN2 mutations result in profound mitochondrial abnormalities, but the mechanism underlying the axonal pathology is unknown. Sterile α and Toll/IL-1 receptor motif-containing 1 (SARM1), the central executioner of axon degeneration, can induce neuropathy and is activated by dysfunctional mitochondria. We tested the role of SARM1 in a rat model carrying a dominant CMT2A mutation (Mfn2H361Y) that exhibits progressive dying-back axonal degeneration, neuromuscular junction (NMJ) abnormalities, muscle atrophy, and mitochondrial abnormalities - all hallmarks of the human disease. We generated Sarm1-KO (Sarm1-/-) and …


Macrophage Depletion Blocks Congenital Sarm1-Dependent Neuropathy, Caitlin B Dingwall, Amy Strickland, Sabrina W Yum, Aldrin Ky Yim, Jian Zhu, Peter L. Wang, Yurie Yamada, Robert E. Schmidt, Yo Sasaki, A. Joseph Bloom, Aaron Diantonio, Jeffrey Milbrandt Dec 2022

Macrophage Depletion Blocks Congenital Sarm1-Dependent Neuropathy, Caitlin B Dingwall, Amy Strickland, Sabrina W Yum, Aldrin Ky Yim, Jian Zhu, Peter L. Wang, Yurie Yamada, Robert E. Schmidt, Yo Sasaki, A. Joseph Bloom, Aaron Diantonio, Jeffrey Milbrandt

2020-Current year OA Pubs

Axon loss contributes to many common neurodegenerative disorders. In healthy axons, the axon survival factor NMNAT2 inhibits SARM1, the central executioner of programmed axon degeneration. We identified 2 rare NMNAT2 missense variants in 2 brothers afflicted with a progressive neuropathy syndrome. The polymorphisms resulted in amino acid substitutions V98M and R232Q, which reduced NMNAT2 NAD+-synthetase activity. We generated a mouse model to mirror the human syndrome and found that Nmnat2V98M/R232Q compound-heterozygous CRISPR mice survived to adulthood but developed progressive motor dysfunction, peripheral axon loss, and macrophage infiltration. These disease phenotypes were all SARM1-dependent. Remarkably, macrophage depletion therapy blocked and reversed …


Cisplatin Exposure Acutely Disrupts Mitochondrial Bioenergetics In The Zebrafish Lateral-Line Organ, David S Lee, Angela Schrader, Mark Warchol, Lavinia Sheets Dec 2022

Cisplatin Exposure Acutely Disrupts Mitochondrial Bioenergetics In The Zebrafish Lateral-Line Organ, David S Lee, Angela Schrader, Mark Warchol, Lavinia Sheets

2020-Current year OA Pubs

Cisplatin is a commonly used chemotherapeutic agent that causes debilitating high-frequency hearing loss. No targeted therapies currently exist to treat cisplatin ototoxicity, partly because the underlying mechanisms of cisplatin-induced hair cell damage are not completely defined. Zebrafish may offer key insights to cisplatin ototoxicity because their lateral-line organ contains hair cells that are remarkably similar to those within the cochlea but are optically accessible, permitting observation of cisplatin injury in live intact hair cells. In this study, we used a combination of genetically encoded biosensors in zebrafish larvae and fluorescent indicators to characterize changes in mitochondrial bioenergetics in response to …


Mouse Tissue Harvest-Induced Hypoxia Rapidly Alters The In Vivo Metabolome, Between-Genotype Metabolite Level Differences, And 13c-Tracing Enrichments, Adam J Rauckhorst, Nicholas Borcherding, Daniel J Pape, Alora S Kraus, Diego A Scerbo, Eric B Taylor Dec 2022

Mouse Tissue Harvest-Induced Hypoxia Rapidly Alters The In Vivo Metabolome, Between-Genotype Metabolite Level Differences, And 13c-Tracing Enrichments, Adam J Rauckhorst, Nicholas Borcherding, Daniel J Pape, Alora S Kraus, Diego A Scerbo, Eric B Taylor

2020-Current year OA Pubs

OBJECTIVE: Metabolomics as an approach to solve biological problems is exponentially increasing in use. Thus, this a pivotal time for the adoption of best practices. It is well known that disrupted tissue oxygen supply rapidly alters cellular energy charge. However, the speed and extent to which delayed mouse tissue freezing after dissection alters the broad metabolome is not well described. Furthermore, how tissue genotype may modulate such metabolomic drift and the degree to which traced

METHODS: By combined liquid chromatography (LC)- and gas chromatography (GC)-mass spectrometry (MS), we measured how levels of 255 mouse liver metabolites changed following 30-second, 1-minute, …


Facilitation–Inhibition Control Of Motor Neuronal Persistent Inward Currents In Young And Older Adults, Lucas B. R. Orssatto, Gabriel L. Fernandes, Anthony J. Blazevich, Gabriel S. Trajano Dec 2022

Facilitation–Inhibition Control Of Motor Neuronal Persistent Inward Currents In Young And Older Adults, Lucas B. R. Orssatto, Gabriel L. Fernandes, Anthony J. Blazevich, Gabriel S. Trajano

Research outputs 2022 to 2026

A well-coordinated facilitation–inhibition control of motor neuronal persistent inward currents (PICs) via diffuse neuromodulation and local inhibition is essential to ensure motor units discharge at required times and frequencies. Present best estimates indicate that PICs are reduced in older adults; however, it is not yet known whether PIC facilitation–inhibition control is also altered with ageing. We investigated the responses of PICs to (i) a remote handgrip contraction, which is believed to diffusely increase serotonergic input onto motor neurones, and (ii) tendon vibration of the antagonist muscle, which elicits reciprocal inhibition, in young and older adults. High-density surface electromyograms were collected …


Current Insights On The Use Of Insulin And The Potential Use Of Insulin Mimetics In Targeting Insulin Signalling In Alzheimer’S Disease, Amy Woodfield, Tatiana Gonzales, Erik Helmerhorst, Simon Laws, Philip Newsholme, Tenielle Porter, Giuseppe Verdile Dec 2022

Current Insights On The Use Of Insulin And The Potential Use Of Insulin Mimetics In Targeting Insulin Signalling In Alzheimer’S Disease, Amy Woodfield, Tatiana Gonzales, Erik Helmerhorst, Simon Laws, Philip Newsholme, Tenielle Porter, Giuseppe Verdile

Research outputs 2022 to 2026

Alzheimer’s disease (AD) and type 2 diabetes (T2D) are chronic diseases that share several pathological mechanisms, including insulin resistance and impaired insulin signalling. Their shared features have prompted the evaluation of the drugs used to manage diabetes for the treatment of AD. Insulin delivery itself has been utilized, with promising effects, in improving cognition and reducing AD related neuropathology. The most recent clinical trial involving intranasal insulin reported no slowing of cognitive decline; however, several factors may have impacted the trial outcomes. Long-acting and rapid-acting insulin analogues have also been evaluated within the context of AD with a lack of …


Learning Regenerative Cultures: Indigenous Nations In Higher Education Renewal In Australia, Sandra Wooltorton, John Guenther, Anne Poelina, Mindy Blaise, Len Collard, Peta White Dec 2022

Learning Regenerative Cultures: Indigenous Nations In Higher Education Renewal In Australia, Sandra Wooltorton, John Guenther, Anne Poelina, Mindy Blaise, Len Collard, Peta White

Research outputs 2022 to 2026

What is regenerative learning in Australian higher education? This paper addresses the intersecting crises of climate, species loss and injustice; often called a conceptual emergency. We tackle the problem of disciplinary compartmentalisation, preventing integration of important related concepts. The particular case is separation of the Australian Curriculum Cross-curriculum Priorities at school and university for teaching, learning and research purposes. We are concerned with two of the three: sustainability, and Aboriginal and Torres Strait Islander histories and cultures. The project generates significant conceptual linkages, which strengthen sustainability with Indigenous histories and cultures. The linked concepts have the potential to re-centre Indigenous …


The Host Mir-17-92 Cluster Negatively Regulates Mmtv Replication By Targeting Its Genomic Rna Via Mir-92a, Jasmin Baby Dec 2022

The Host Mir-17-92 Cluster Negatively Regulates Mmtv Replication By Targeting Its Genomic Rna Via Mir-92a, Jasmin Baby

Dissertations

The mouse mammary tumor virus (MMTV) is a milk-borne infectious agent capable of inducing mammary tumors primarily and to some extent, T-cell leukemias/lymphomas in mice. While MMTV has typically been employed to investigate fundamental processes in breast cancer initiation and progression, very little is known about the virus-host interplay during this process. MicroRNAs (miRNAs) are renowned master regulators of the transcriptome that influence key cellular activities, including anti-viral pathways that combat incoming viral infections. A recent study from our group revealed that unlike some retroviruses like bovine leukemia virus (BLV), MMTV does not encode virally-encoded miRNAs (v-miRs); rather, it perturbs …


Expressiveness Of Real-Time Motion Captured Avatars Influences Perceived Animation Realism And Perceived Quality Of Social Interaction In Virtual Reality, Alan D. Fraser, Isabella Branson, Ross C. Hollett, Craig P. Speelman, Shane L. Rogers Dec 2022

Expressiveness Of Real-Time Motion Captured Avatars Influences Perceived Animation Realism And Perceived Quality Of Social Interaction In Virtual Reality, Alan D. Fraser, Isabella Branson, Ross C. Hollett, Craig P. Speelman, Shane L. Rogers

Research outputs 2022 to 2026

Using motion capture to enhance the realism of social interaction in virtual reality (VR) is growing in popularity. However, the impact of different levels of avatar expressiveness on the user experience is not well understood. In the present study we manipulated levels of face and body expressiveness of avatars while investigating participant perceptions of animation realism and interaction quality when disclosing positive and negative experiences in VR. Moderate positive associations were observed between perceptions of animation realism and interaction quality. Post-experiment questions revealed that many of our participants (approximately 40 %) indicated the avatar with the highest face and body …


Pathogenic Potential Of Respirable Spodumene Cleavage Fragments Following Application Of Regulatory Counting Criteria For Asbestiform Fibres, Melinda Gardner, Martyn Cross, Sue Reed, Maggie Davidson, Rick Hughes, Jacques Oosthuizen Dec 2022

Pathogenic Potential Of Respirable Spodumene Cleavage Fragments Following Application Of Regulatory Counting Criteria For Asbestiform Fibres, Melinda Gardner, Martyn Cross, Sue Reed, Maggie Davidson, Rick Hughes, Jacques Oosthuizen

Research outputs 2022 to 2026

Health risks from exposure to lithium-bearing spodumene cleavage fragments are unknown. While asbestiform fibres can lead to fibrosis, mesothelioma and lung cancer, controversy remains whether non-asbestiform cleavage fragments, having equivalent dimensions, elicit similar pathologic responses. The mineralogy of respirable particles from two alpha (α) - spodumene concentrate grades (chemical and technical) were characterised using semi-quantitative X-ray diffraction (XRD). Particles were measured using scanning electron microscopy (SEM) and the dimensions (length [L], diameter [D], aspect ratio [AR]) applied to regulatory counting criteria for asbestiform fibres. Application of the current World Health Organization (WHO) and National Occupational Health and Safety Commission (NOHSC) …


Navy Blues: Between Waves And Warriors, Reinetta A. Vaneendenburg Dec 2022

Navy Blues: Between Waves And Warriors, Reinetta A. Vaneendenburg

English Theses & Dissertations

Personal narrative, segments of oral histories, and short prose poetry combine to reflect the experience of contemporary women line officers in the U.S. Navy. I drew from my thirty-plus years of naval service as well as oral interviews that I have collected to depict this significant transitional period for women, whose roles expanded from clerks and fleet support administrators to trained warriors and watch standers, ready for the next mission. Themes such as personal identity, sexuality, and social pressures combine to form a portrait of adventuresome and talented young women who did, indeed, persist, and persevere.


Statistical Methods For Meta-Analysis In Large-Scale Genomic Experiments, Wimarsha Thathsarani Jayanetti Dec 2022

Statistical Methods For Meta-Analysis In Large-Scale Genomic Experiments, Wimarsha Thathsarani Jayanetti

Mathematics & Statistics Theses & Dissertations

Recent developments in high throughput genomic assays have opened up the possibility of testing hundreds and thousands of genes simultaneously. With the availability of vast amounts of public databases, researchers tend to combine genomic analysis results from multiple studies in the form of a meta-analysis. Meta-analysis methods can be broadly classified into two main categories. The first approach is to combine the statistical significance (pvalues) of the genes from each individual study, and the second approach is to combine the statistical estimates (effect sizes) from the individual studies. In this dissertation, we will discuss how adherence to the standard null …


Hieronymus Bosch's Dismantled Triptych And The 'Devotio Moderna', Mary E. Tippett Dec 2022

Hieronymus Bosch's Dismantled Triptych And The 'Devotio Moderna', Mary E. Tippett

Institute for the Humanities Theses

Flemish painter Jeroen van Aken, better known as Hieronymus Bosch, created a triptych depicting the folly of humanity. This dismantled triptych includes the Ship of Fools, the Allegory of Intemperance, the Death of the Miser, and the Rotterdam Wayfarer, completed between 1500 and 1510. Throughout his career, Bosch explored a peculiar take on the traditional forms of wellknown religious motifs throughout Renaissance Europe by populating his scenes with fantastical creatures and monsters. Scholars have long since suggested that these forms were inspired by illuminated manuscripts. However, scholars provided no explanation as to why these texts drew …