Anatomy Commons^™

Distribution Of Variations In Anatomy Of The Circle Of Willis: Results Of A Cadaveric Study Of The Malawian Population And Review Of Literature, Charles Nyasa, Anthony Mwakikunga, Lackson Temb, Charles Dzamalala, Amadi O. Ihunwo

Brain and Mind Institute

Introduction

the circle of Willis is an anatomical structure of clinical importance particularly in the evaluation of neurovascular diseases. Individuals show considerable variations in the anatomical configuration of the circle of Willis. A cross-sectional study was conducted to determine the distribution of morphological variations of the circle of Willis in Malawians and compare with other ethnic groups.

Methods

brains were collected from twenty-four recently deceased black Malawians during autopsy at Queen Elizabeth Central Hospital, a referral teaching hospital in Blantyre, Malawi and fixed in 10% buffered formalin. Digital images of the interpeduncular region (exposing the circle of Willis) were taken …

Effectiveness Of Physical Therapy Interventions For Women With Dysmenorrhea: A Systematic Review, Emily Hammond, Abigail Applegate, Emma Caldwell, Hayley Witmer, Amy Tremback-Ball

Student Research Poster Presentations 2021

Background and aims: Primary dysmenorrhea, or painful menstruation, is common in menstruating females. However, in some, it can cause intense pain, disrupt activities of daily living, and impact quality of life. The treatment of dysmenorrhea does not traditionally include physical therapy. A systematic review was conducted to explore the role of physical therapy in treating dysmenorrhea. Methods: A search was performed in August 2020 and January 2021 using EBSCOhost, Academic Search Ultimate, CINAHL Complete, and MEDLINE. Search terms included exercise or physical activity or fitness AND dysmenorrhea or menstrual pain or painful menstruation. Inclusion criteria were articles that were peer-reviewed, …

Impact Of Heavy Metals In Ambient Air In Insulin Resistance Of Shipyard Welders In Northern Taiwan, Ting-Yao Su, Hueiwang Anna Jeng, Yuan-Ting Hsu, Ching-Huang Lai, Chih-Hong Pan

Community & Environmental Health Faculty Publications

Exposure to metals poses potential health risks, including insulin resistance (IR), to those exposed to them in excess. Limited studies have examined such risks in occupational workers, including welders, and these have yielded inconsistent results. Thus, we examined the associations between exposure to welding metals and IR in welders. We recruited 78 welders and 75 administrative staff from a shipyard located in northern Taiwan. Personal exposure to heavy metals, including chromium (Cr), manganese (Mn), iron (Fe), nickel (Ni), copper (Cu), zinc (Zn), and cadmium (Cd), was monitored through particulate matter with an aerodynamic diameter of less than 2.5 μm (PM …

Transcatheter Aortic Valve Replacement (Tavr), Emily Wentzel

Student Research Poster Presentations 2021

Transcatheter Aortic Valve Replacement (TAVR)

Emily Wentzel

Lynn Blazaskie

Abstract

Transcatheter Aortic Valve Replacement, or TAVR, is a procedure that is performed when a patient is in need of a new aortic valve. This is a procedure done to relieve symptoms of aortic stenosis. TAVR first began in France in 2002 and came to the United States in 2005. Cardiac Catheterization is the modality that is utilized in order to perform this procedure along with a cardiac catheterization team. The team includes cardiac catheterization technologists, doctors, nurses, cardiovascular surgeons, and ultrasound technologists. Cardiac Catheterization is a minor surgical procedure that …

Characterization Of Inhbb, Heatr5a, & Cyp2s1 Expression In Dorsal Root Ganglia By In-Situ Hybridization, Joshua D. Krech

Browse all Theses and Dissertations

Multiple studies have shown that gene expression changes occur in sensory neurons after peripheral nerve injury (PNI). These expression changes include many genes that are turned on specifically in response to injury, but much less is know about expression changes in stable genetic markers of particular sensory neuron populations. This study characterized the expression of three markers of proprioceptive neurons Inhbb, Heatr5a, Cyp2s1 in lumbar dorsal root ganglion (DRG) neurons in intact animals and after PNI. To perform these experiments, we subcloned segments of the coding sequences of these genes and generated DIG-labeled riboprobes. Control experiments demonstrated the validity of …

Somatosensory Dysfunction Is Masked By Variable Cognitive Deficits Across Patients On The Alzheimer’S Disease Spectrum, Alex I. Wiesman, Victoria M. Mundorf, Chloe C. Casagrande, Sara L. Wolfson, Craig M. Johnson, Pamela E. May, Daniel L. Murman, Tony W. Wilson

Center for Brain, Biology, and Behavior: Faculty Publications

Background: Alzheimer’s disease (AD) is generally thought to spare primary sensory function; however, such interpretations have drawn from a literature that has rarely taken into account the variable cognitive declines seen in patients with AD. As these cognitive domains are now known to modulate cortical somato-sensory processing, it remains possible that abnormalities in somatosensory function in patients with AD have been suppressed by neuropsychological variability in previous research. Methods: In this study, we combine magnetoencephalographic (MEG) brain imaging during a paired-pulse somatosensory gating task with an extensive battery of neuropsychological tests to investigate the influence of cognitive variability on estimated …

Latent Traits Of Lung Tissue Patterns In Former Smokers Derived By Dual Channel Deep Learning In Computed Tomography Images, Frank Li, Jiwoong Choi, Chunrui Zou, John D. Newell, Alejandro P. Comellas, Chang Hyun Lee, Hongseok Ko, R. Graham Barr, Eugene R. Bleecker, Christopher B. Cooper, Fereidoun Abtin, Igor Barjaktarevic, David Couper, Meilan Han, Nadia N. Hansel, Richard E. Kanner, Robert Paine, Ella A. Kazerooni, Fernando J. Martinez, Wanda O'Neal, Stephen I. Rennard, Benjamin M. Smith, Prescott G. Woodruff, Eric A. Hoffman, Ching-Long Lin

Journal Articles: Pulmonary & Critical Care Med

Chronic obstructive pulmonary disease (COPD) is a heterogeneous disease and the traditional variables extracted from computed tomography (CT) images may not be sufficient to describe all the topological features of lung tissues in COPD patients. We employed an unsupervised three-dimensional (3D) convolutional autoencoder (CAE)-feature constructor (FC) deep learning network to learn from CT data and derive tissue pattern-clusters jointly. We then applied exploratory factor analysis (EFA) to discover the unobserved latent traits (factors) among pattern-clusters. CT images at total lung capacity (TLC) and residual volume (RV) of 541 former smokers and 59 healthy non-smokers from the cohort of the SubPopulations …

Small Airway Determinants Of Airflow Limitation In Chronic Obstructive Pulmonary Disease, Vasiliy V. Polosukhin, Sergey S. Gutor, Rui-Hong Du, Bradley W. Richmond, Pierre P. Massion, Pingsheng Wu, Justin M. Cates, Kim L. Sandler, Stephen I. Rennard, Timothy S. Blackwell

Journal Articles: Pulmonary & Critical Care Med

BACKGROUND: Although a variety of pathological changes have been described in small airways of patients with COPD, the critical anatomic features determining airflow limitation remain incompletely characterised.

METHODS: We examined lung tissue specimens from 18 non-smokers without chronic lung disease and 55 former smokers with COPD for pathological features of small airways that could contribute to airflow limitation. Morphometric evaluation was performed for epithelial and subepithelial tissue thickness, collagen and elastin content, luminal mucus and radial alveolar attachments. Immune/inflammatory cells were enumerated in airway walls. Quantitative emphysema scoring was performed on chest CT scans.

RESULTS: Small airways from patients with …

A Systematic Review Of Brainstem Contributions To Autism Spectrum Disorder, Ala Seif, Carly Shea, Susanne Schmid, Ryan A Stevenson

Anatomy and Cell Biology Publications

Autism spectrum disorder (ASD) is a neurodevelopmental disorder that affects one in 66 children in Canada. The contributions of changes in the cortex and cerebellum to autism have been studied for decades. However, our understanding of brainstem contributions has only started to emerge more recently. Disruptions of sensory processing, startle response, sensory filtering, sensorimotor gating, multisensory integration and sleep are all features of ASD and are processes in which the brainstem is involved. In addition, preliminary research into brainstem contribution emphasizes the importance of the developmental timeline rather than just the mature brainstem. Therefore, the purpose of this systematic review …

Gabab Receptor Agonist R-Baclofen Reverses Altered Auditory Reactivity And Filtering In The Cntnap2 Knock-Out Rat, Dorit Möhrle, Wenxuan Wang, Shawn N Whitehead, Susanne Schmid

Anatomy and Cell Biology Publications

Altered sensory information processing, and auditory processing, in particular, is a common impairment in individuals with autism spectrum disorder (ASD). One prominent hypothesis for the etiology of ASD is an imbalance between neuronal excitation and inhibition. The selective GABA_B receptor agonist R-Baclofen has been shown previously to improve social deficits and repetitive behaviors in several mouse models for neurodevelopmental disorders including ASD, and its formulation Arbaclofen has been shown to ameliorate social avoidance symptoms in some individuals with ASD. The present study investigated whether R-Baclofen can remediate ASD-related altered sensory processing reliant on excitation/inhibition imbalance in the auditory brainstem. …

Micro-Ct Of The Human Ossicular Chain: Statistical Shape Modeling And Implications For Otologic Surgery, Western University, London Health Sciences Centre

Electrical and Computer Engineering Publications

The ossicular chain is a middle ear structure consisting of the small incus, malleus and stapes bones, which transmit tympanic membrane vibrations caused by sound to the inner ear. Despite being shown to be highly variable in shape, there are very few morphological studies of the ossicles. The objective of this study was to use a large sample of cadaveric ossicles to create a set of three-dimensional models and study their statistical variance. Thirty-three cadaveric temporal bone samples were scanned using micro-computed tomography (μCT) and segmented. Statistical shape models (SSMs) were then made for each ossicle to demonstrate the divergence …

Open Neuroscience Initiative, Austin Lim

College of Science and Health Full Text Publications

The Open Neuroscience Initiative is a free-to-use textbook

This project began as a means to overcoming the financial burden that face undergraduate neuroscience students when buying textbooks. By compiling and writing a completely free-to-access textbook that covers the foundations of a typical college introduction to neuroscience course, students would have one less obstacle to overcome in their educational career, allowing them to focus their valuable time and attention on learning rather than finances. To make this project a reality, I began with a humble tweet in May 2019 that managed to gain a tiny bit of traction among the neuroscience …

Genetic Variation In Genes Regulating Skeletal Muscle Regeneration And Tissue Remodelling Associated With Weight Loss In Chronic Obstructive Pulmonary Disease, Preeti Lakshman Kumar, Ava C. Wilson, Alison Rocco, Michael H. Cho, Emily Wan, Brian D. Hobbs, George R. Washko, Victor E. Ortega, Stephanie A. Christenson, Xingnan Li, J. Michael Wells, Surya P. Bhatt, Dawn L. Demeo, Sharon M. Lutz, Harry Rossiter, Richard Casaburi, Stephen I. Rennard, David A. Lomas, Wassim W. Labaki, Ruth Tal-Singer, Russel P. Bowler, Craig P. Hersh, Hemant K. Tiwari, Mark Dransfield, Anna Thalacker-Mercer, Deborah A. Meyers, Edwin K. Silverman, Merry-Lynn N. Mcdonald, Copdgene, Eclipse And Spiromics Investigators

Journal Articles: Pulmonary & Critical Care Med

BACKGROUND: Chronic obstructive pulmonary disease (COPD) is the third leading cause of death globally. COPD patients with cachexia or weight loss have increased risk of death independent of body mass index (BMI) and lung function. We tested the hypothesis genetic variation is associated with weight loss in COPD using a genome-wide association study approach.

METHODS: Participants with COPD (N = 4308) from three studies (COPDGene, ECLIPSE, and SPIROMICS) were analysed. Discovery analyses were performed in COPDGene with replication in SPIROMICS and ECLIPSE. In COPDGene, weight loss was defined as self-reported unintentional weight loss > 5% in the past year or low …

The Effect Of Long-Acting Dual Bronchodilator Therapy On Exercise Tolerance, Dynamic Hyperinflation, And Dead Space During Constant Work Rate Exercise In Copd, William W. Stringer, Janos Porszasz, Min Cao, Harry B. Rossiter, Shahid Siddiqui, Stephen I. Rennard, Richard Casaburi

Journal Articles: Pulmonary & Critical Care Med

We investigated whether dual bronchodilator therapy (glycopyrrolate/formoterol fumarate; GFF; Bevespi Aerosphere) would increase exercise tolerance during a high-intensity constant work rate exercise test (CWRET) and the relative contributions of dead space ventilation (V_D/V_T) and dynamic hyperinflation (change in inspiratory capacity) to exercise limitation in chronic obstructive pulmonary disease (COPD). In all, 48 patients with COPD (62.9 ± 7.6 yrs; 33 male; GOLD spirometry stage 1/2/3/4, n = 2/35/11/0) performed a randomized, double blind, placebo (PL) controlled, two-period crossover, single-center trial. Gas exchange and inspiratory capacity (IC) were assessed during cycle ergometry at 80% incremental exercise peak …

Longitudinal Imaging-Based Clusters In Former Smokers Of The Copd Cohort Associate With Clinical Characteristics: The Subpopulations And Intermediate Outcome Measures In Copd Study (Spiromics), Chunrui Zou, Frank Li, Jiwoong Choi, Babak Haghighi, Sanghun Choi, Prathish K. Rajaraman, Alejandro P. Comellas, John D. Newell, Chang Hyun Lee, R. Graham Barr, Eugene Bleecker, Christopher B. Cooper, David Couper, Meilan Han, Nadia N. Hansel, Richard E. Kanner, Ella A. Kazerooni, Eric C. Kleerup, Fernando J. Martinez, Wanda O'Neal, Robert Paine, Stephen I. Rennard, Benjamin M. Smith, Prescott G. Woodruff, Eric A. Hoffman, Ching-Long Lin

Journal Articles: Pulmonary & Critical Care Med

PURPOSE: Quantitative computed tomography (qCT) imaging-based cluster analysis identified clinically meaningful COPD former-smoker subgroups (clusters) based on cross-sectional data. We aimed to identify progression clusters for former smokers using longitudinal data.

PATIENTS AND METHODS: We selected 472 former smokers from SPIROMICS with a baseline visit and a one-year follow-up visit. A total of 150 qCT imaging-based variables, comprising 75 variables at baseline and their corresponding progression rates, were derived from the respective inspiration and expiration scans of the two visits. The COPD progression clusters identified were then associated with subject demography, clinical variables and biomarkers.

RESULTS: COPD severities at baseline …

Examining Neuroanatomical Effects Of Prenatal Valproic Acid And Postnatal Testosterone In A Mouse Model Of Autism Spectrum Disorder, Bishakha Kumari, Elizabeth Ann Gordon, Cynthia Corbitt

Undergraduate Arts and Research Showcase

Sex differences in Autism Spectrum Disorder (ASD) are well documented; males are diagnosed 4:1 over females. Testosterone (T) is one factor that differs by sex in humans and mice that could increase vulnerability to developing ASD in males. Valproic acid (VPA) is an anticonvulsant that has been found to increase the risk of autism in male offspring of pregnant women who take it to control seizures and is commonly used in mouse models of ASD. After prenatal VPA or vehicle on embryonic day 13, testosterone (T) or vehicle was administered to the mice on postnatal day 2 to investigate whether …

Lumbopelvic Stability And Trunk Muscle Contractility Of Individuals With Chronic Ankle Instability, Ryan S. Mccann, Kelly Johnson, Ashley M.B. Suttmiller

Rehabilitation Sciences Faculty Publications

BACKGROUND: Chronic ankle instability (CAI) results in hip neuromuscular impairments that can perpetuate dysfunction through reduced lumbopelvic stability and subsequent malpositioning of the lower body during functional movement. Lumbopelvic stability might be further impaired through changes in trunk muscular contractility. However, lumbopelvic stability and trunk muscle morphology have not been compared between individuals with and without CAI.

PURPOSE: To compare lumbopelvic stability and trunk muscle contractility between individuals with and without chronic ankle instability (CAI) and determine if lumbopelvic stability and trunk muscle contractility are associated with self-reported function.

STUDY DESIGN: Case-control study.

METHODS: Ten individuals with CAI, 10 …

The Influence Of Sonographer Experience On Skeletal Muscle Image Acquisition And Analysis, Joshua C. Carr, Gena R. Gerstner, Caleb C. Voskuil, Joel E. Harden, Dustin Dunnick, Kristin M. Badillo, Jason I. Pagan, Kylie K. Harmon, Ryan M. Girts, Jonathan P. Beausejour, Matt S. Stock

Human Movement Studies & Special Education Faculty Publications

The amount of experience with ultrasonography may influence measurement outcomes while images are acquired or analyzed. The purpose of this study was to identify the interrater reliability of ultrasound image acquisition and image analysis between experienced and novice sonographers and image analysts, respectively. Following a brief hands-on training session (2 h), the experienced and novice sonographers and analysts independently performed image acquisition and analyses on the biceps brachii, vastus lateralis, and medial gastrocnemius in a sample of healthy participants (n = 17). Test–retest reliability statistics were computed for muscle thickness (transverse and sagittal planes), muscle cross-sectional area, echo intensity and …

Picosecond Pulsed Electric Fields And Promise In Neurodegeneration Research, Martina Zamponi, Ross Petrella, Peter A. Mollica

School of Medical Diagnostics & Translational Sciences Publications

The delivery of pulsed electric fields to biological cells for regenerative research and therapeutic applications is a field that has been widely explored. Picosecond pulsed electric fields have been shown to induce intracellular effects and directly target cell membrane proteins as well as being able to induce cell permeabilization and death by apoptosis. Additionally, ultrashort pulses can be focused and delivered in a noncontact manner for possible targeting of deep and inaccessible tissues. The unique characteristics of picosecond pulses make them a possible approach for treatment of Huntington's and Alzheimer's diseases, both characterized by progressive neuronal degeneration and death, and …

Simulation Of A Rat Muscle-Tendon Unit With Hill-Type Model Dynamics And The Study Of Viscoelasticity In A Collagen Molecule Via Molecular Dynamics, Veronica Siko

West Chester University Master’s Theses

The field of biological science has established that tendons transfer muscular forces to adjacent bones, but there is a dearth of information about the underlying physical principles of these interactions and how the property of viscoelasticity (displayed in tendons as a difference in mechanical response to stress with differing stretching rates) is encompassed in the collagen of tendons. This thesis details the results of concentric and eccentric contractions of the rat muscle-tendon unit (MTU) with and without viscoelasticity (concentric contraction requires active shortening of the muscle, while eccentric contraction requires active lengthening of the muscle) (Lovering & Brooks, 2014). Once …