Medicine and Health Sciences Commons^™

The Effect Of Chronic Sleep Deprivation On Tumor Necrosis Factor Alpha And Bone Health In Peri-Menopausal Rats, Megan Robertson, Derek Booth, Erin Wainwright, Cody Arbuckle, Frank Frisch

Student Scholar Symposium Abstracts and Posters

Post-menopausal osteoporosis is a common syndrome in the United States. The cessation of estrogen signaling coupled with the production of pro-inflammatory cytokines from sleep deprivation leads to an even greater risk of post-menopausal osteoporosis by creating an imbalance between osteoblasts and osteoclasts. With estrogen no longer present to regulate the concentration of osteoclasts and pro-inflammatory cytokines increasing production of osteoclasts, bone is degraded at a faster rate than it is formed. One of the most common treatments for osteoporosis is Zolendronate (a nitrogenous bisphosphonate), which decreases the number of osteoclasts in bone. This preliminary study looked at the effects on …

Accommodating Hyperaroused Information Processing In Persons At Risk For Alcoholism, Kellianne Clark, Jaclyn Cutler

Student Scholar Symposium Abstracts and Posters

In the search for the factors related to the heightened alcoholism risk in adult children of alcoholics (ACOA), it has been reported that these persons possess a high incidence of attention deficit disorders (ADD) as determined by clinical assessment instruments. However, investigations of alcoholism risk and ADD indicate that, in contrast to the hypoarousal model of ADD, the ACOA’s attention problems represent hyperarousal of attention mechanisms resulting in reduced ability to select and encode relevant information. If true, then unlike persons with ADD, clinical and cognitive assessments of ACOAs would benefit if the ACOA was provided with more time to …

A Randomized Noninferiority Trial Of Condensed Protocols For Genetic Risk Disclosure Of Alzheimer's Disease, Peter J. Whitehouse, Melissa Barber Butson

Faculty Scholarship

Introduction Conventional multisession genetic counseling is currently recommended when disclosing apolipoprotein E (APOE) genotype for the risk of Alzheimer's disease (AD) in cognitively normal individuals. The objective of this study was to evaluate the safety of brief disclosure protocols for disclosing APOE genotype for the risk of AD. Methods A randomized, multicenter noninferiority trial was conducted at four sites. Participants were asymptomatic adults having a first-degree relative with AD. A standard disclosure protocol by genetic counselors (SP-GC) was compared with condensed protocols, with disclosures by genetic counselors (CP-GC) and by physicians (CP-MD). Preplanned co-primary outcomes were anxiety and depression scales …

Effect Of Dual Tasking On Walking Over Even And Uneven Surfaces In Functionally Independent Community Older Adults, Olajide L. Kolawole

Seton Hall University Dissertations and Theses (ETDs)

While several studies have reported a decrement in performance by older adults while walking and concurrently performing a dual task on even surfaces, to date the effects of dual tasking while walking on uneven surfaces commonly found in the community has received less attention. Thus, we sought to test the hypothesis that an incremental decrement in gait parameters will be observed, when walking on an uneven versus an even surface and furthermore, that this decrement would be dependent upon the concurrent performance of a secondary cognitive and/or motor task in functionally independent-living-community older adults.

Dynamic Gait Index assessed the subject’s …

One Year Review Of High Flow Oxygen Delivery System Outcomes, Susan Carvin Rrt-Accs, Kenneth Miller Med, Rrt-Nps, Diane Horoski, Robert Leshko Bs,Rrt, Rita Pechulis Md, Fccp

Patient Care Services / Nursing

No abstract provided.

Free-Breathing Pulmonary (1)H And Hyperpolarized (3)He Mri: Comparison In Copd And Bronchiectasis., Dante P I Capaldi, Khadija Sheikh, Fumin Guo, Sarah Svenningsen, Roya Etemad-Rezai, Harvey O Coxson, Jonathon A Leipsic, David G Mccormack, Grace Parraga

Medical Biophysics Publications

RATIONALE AND OBJECTIVES: In this proof-of-concept demonstration, we aimed to quantitatively and qualitatively compare pulmonary ventilation abnormalities derived from Fourier decomposition of free-breathing (1)H magnetic resonance imaging (FDMRI) to hyperpolarized (3)He MRI in subjects with chronic obstructive pulmonary disease (COPD) and bronchiectasis.

MATERIALS AND METHODS: All subjects provided written informed consent to a protocol approved by a local research ethics board and Health, Canada, and they underwent MRI, computed tomography (CT), spirometry, and plethysmography during a single 2-hour visit. Semiautomated segmentation was used to generate ventilation defect measurements derived from FDMRI and (3)He MRI, and these were compared using analysis …

Sensory Abnormalities In Focal Hand Dystonia And Non-Invasive Brain Stimulation, Angelo Quartarone, Vincenzo Rizzo, Carmen Terranova, Demetrio Milardi, Daniele Bruschetta, Maria Felice Ghilardi, Paolo Girlanda

Publications and Research

It has been proposed that synchronous and convergent afferent input arising from repetitive motor tasks may play an important role in driving the maladaptive cortical plasticity seen in focal hand dystonia (FHD).This hypothesis receives support from several sources. First, it has been reported that in subjects with FHD, paired associative stimulation produces an abnormal increase in corticospinal excitability, which was not confined to stimulated muscles. These findings provide support for the role of excessive plasticity in FHD. Second, the genetic contribution to the dystonias is increasingly recognized indicating that repetitive, stereotyped afferent inputs may lead to late-onset dystonia, such as …

Analysis Of Drug Interactions With Lipoproteins By High Performance Affinity Chromatography, Matthew R. Sobansky

Department of Chemistry: Dissertations, Theses, and Student Research

High density lipoprotein (HDL), low density lipoprotein (LDL), and very low density lipoprotein (VLDL) are lipoproteins previously shown to bind many basic and neutral hydrophobic drugs in serum. These interactions impact the distribution, delivery, metabolism, and excretion of drugs and are important in determining drug activity, pharmacokinetics, and toxicity in the human body. Information about drug-lipoprotein interactions and the strength of these interactions can be useful in determining the distribution of drugs following administration.

The research presented in this dissertation uses high performance affinity chromatography (HPAC) and packed columns to study binding of the drug propranolol to immobilized lipoproteins such …

A Critical Evaluation Of The Trigger Point Phenomenon, John L. Quintner, Geoffrey M. Bove, Milton L. Cohen

Biomedical Sciences Faculty Publications

The theory of myofascial pain syndrome (MPS) caused by trigger points (TrPs) seeks to explain the phenomena of muscle pain and tenderness in the absence of evidence for local nociception. Although it lacks external validity, many practitioners have uncritically accepted the diagnosis of MPS and its system of treatment. Furthermore, rheumatologists have implicated TrPs in the pathogenesis of chronic widespread pain (fibromyalgia syndrome). We have critically examined the evidence for the existence of myofascial TrPs as putative pathological entities and for the “vicious cycles that are said to maintain them. We find that both are inventions that have no scientific …

Longitudinal Quantitative Analysis Of Gait And Balance In Friedreich's Ataxia, Jeannie B. Stephenson

USF Tampa Graduate Theses and Dissertations

Friedreich's Ataxia (FA) is an autosomal-recessive, neurodegenerative disease characterized by progressive lower extremity muscle weakness and sensory loss, balance deficits, limb and gait ataxia, and dysarthria. FA is considered a sensory ataxia because the dorsal root ganglia and spinal cord dorsal columns are involved early in the disease, whereas the cerebellum is affected later. Balance deficits and gait ataxia are often evaluated clinically and in research using clinical rating scales. Recently, quantitative tools such as the Biodex Balance System SD and the GAITRite Walkway System have become available to objectively assess balance and gait, respectively. However, there are limited studies …

Over-Expression Of Copper/Zinc Superoxide Dismutase In The Median Preoptic Nucleus Attenuates Chronic Angiotensin Ii-Induced Hypertension In The Rat., John P. Collister, Mitch Bellrichard, Donna Drebes, David Nahey, Jun Tian, Matthew C. Zimmerman

Journal Articles: Cellular & Integrative Physiology

The brain senses circulating levels of angiotensin II (AngII) via circumventricular organs, such as the subfornical organ (SFO), and is thought to adjust sympathetic nervous system output accordingly via this neuro-hormonal communication. However, the cellular signaling mechanisms involved in these communications remain to be fully understood. Previous lesion studies of either the SFO, or the downstream median preoptic nucleus (MnPO) have shown a diminution of the hypertensive effects of chronic AngII, without providing a clear explanation as to the intracellular signaling pathway(s) involved. Additional studies have reported that over-expressing copper/zinc superoxide dismutase (CuZnSOD), an intracellular superoxide (O2·-) scavenging enzyme, in …

E2f4 Regulatory Program Predicts Patient Survival Prognosis In Breast Cancer, Sari S. Khaleel, Erik H. Andrews, Matthew Ung, James Direnzo, Chao Chung

Dartmouth Scholarship

Genetic and molecular signatures have been incorporated into cancer prognosis prediction and treatment decisions with good success over the past decade. Clinically, these signatures are usually used in early-stage cancers to evaluate whether they require adjuvant therapy following surgical resection. A molecular signature that is prognostic across more clinical contexts would be a useful addition to current signatures. We defined a signature for the ubiquitous tissue factor, E2F4, based on its shared target genes in multiple tissues. These target genes were identified by chromatin immunoprecipitation sequencing (ChIP-seq) experiments using a probabilistic method. We then computationally calculated the regulatory activity score …

Analysis Of Clock-Regulated Genes In Neurospora Reveals Widespread Posttranscriptional Control Of Metabolic Potential, Jennifer M. M. Hurley, Arko Dasgupta, Jillian M. Emerson, Xiaoying Zhou, Carol S. Ringelberg, Nicole Knabe

Dartmouth Scholarship

Neurospora crassa has been for decades a principal model for filamentous fungal genetics and physiology as well as for understanding the mechanism of circadian clocks. Eukaryotic fungal and animal clocks comprise transcription-translation-based feedback loops that control rhythmic transcription of a substantial fraction of these transcriptomes, yielding the changes in protein abundance that mediate circadian regulation of physiology and metabolism: Understanding circadian control of gene expression is key to understanding eukaryotic, including fungal, physiology. Indeed, the isolation of clock-controlled genes (ccgs) was pioneered in Neurospora where circadian output begins with binding of the core circadian transcription factor WCC to a subset …

Syndecan 4 Is Required For Endothelial Alignment In Flow And Atheroprotective Signaling, Nicolas Baeyens, Mary Jo Mulligan-Kehoe, Federico Corti, David D. Simon, Tyler D. Ross, John M. Rhodes, Thomas Z. Wang

Dartmouth Scholarship

Atherosclerotic plaque localization correlates with regions of disturbed flow in which endothelial cells (ECs) align poorly, whereas sustained laminar flow correlates with cell alignment in the direction of flow and resistance to atherosclerosis. We now report that in hypercholesterolemic mice, deletion of syndecan 4 (S4−/−) drastically increased atherosclerotic plaque burden with the appearance of plaque in normally resistant locations. Strikingly, ECs from the thoracic aortas of S4−/− mice were poorly aligned in the direction of the flow. Depletion of S4 in human umbilical vein endothelial cells (HUVECs) using shRNA also inhibited flow-induced alignment in vitro, which was rescued by re-expression …

Synthesis And Characterization Of Methacrylated Hyaluronan-Based Hydrogels For Tissue Engineering, Keegan Bradley Compton

Theses and Dissertations (ETD)

Polymers have revolutionized the field of tissue engineering due to the countless possibilities of scaffolds that can be constructed from such a material. Through conjugation of other functional groups onto a polymer backbone, the mechanical properties of polymers can be controlled and has the ability to span a wide range of strengths, allowing for application in multiple tissue environments. One such polymer, hyaluronic acid (HA), is a natural polysaccharide found most abundantly in the extracellular matrix (ECM) of connective tissues with structural, lubricating, and wound healing functions in the human body; for this reason, HA has great potential for utilization …

The Mirnaome Of Opisthorchis Viverrini Induced Intrahepatic Cholangiocarcinoma, Jin Peng, Yanjun Feng, Gabriel Rinaldi, Ponlapat Yonglitthipagon, Samantha Easley, Therawach Laha, Chawalit Pairojkul, Vajarabhongsa Bhudhisawasdi, Banchob Sripa, Paul J. Brindley, Jason P. Mulvenna, Jeffrey M. Bethony, Jordan L. Plieskatt

Microbiology, Immunology, and Tropical Medicine Faculty Publications

Intrahepatic cholangiocarcinoma (ICC) is an aggressive cancer, arising in the biliary ducts that extend into the liver. The highest incidence of ICC occurs in Southeast Asia, particularly in the Mekong River Basin countries of Thailand, Laos, Cambodia, and Vietnam, where it is strongly associated with chronic infection by the food-borne liver fluke Opisthorchis viverrini (OV), one of only three eukaryote pathogens considered Group one carcinogens. Intrahepatic cholangiocarcinoma is usually diagnosed at an advanced stage, with a poor prognosis and survival often less than 24 months. Hence, biomarkers that enable the early detection of ICC would be desirable and have a …

Profiling Mirnas In Nasopharyngeal Carcinoma Ffpe Tissue By Microarray And Next Generation Sequencing, Jin Peng, Yanjun Feng, Gabriel Rinaldi, Paul H. Levine, Samantha Easley, Elizabeth Martinez, Salman Hashmi, Nader Sadeghi, Paul J. Brindley, Jason P. Mulvenna, Jeffrey M. Bethony, Jordan L. Plieskatt

Microbiology, Immunology, and Tropical Medicine Faculty Publications

Nasopharyngeal carcinoma (NPC) is a non-lymphomatous, squamous-cell carcinoma that occurs in the epithelial lining of the nasopharynx. Nasopharyngeal carcinoma has a geographically well-defined distribution worldwide, with the highest prevalence in China, Southeast Asia, and Northern Africa. Symptoms of nascent NPC may be unapparent or trivial, with diagnosis based on the histopathology of biopsied tissue following endoscopy of the nasopharynx. The tumor node metastasis (TNM) staging system is the benchmark for the prognosis of NPC and guides treatment strategy. However, there is a consensus that the TNM system is not sufficiently specific for the prognosis of NPC, as it does not …

La Cesárea Y El Parto Natural: Las Opiniones De Profesionales De La Salud En La Provincia De Buenos Aires / Cesarean Section And Natural Birth: The Opinions Of Health Provinces In The Province Of Buenos Aires, Jacqueline Chipkin

Independent Study Project (ISP) Collection

Introduction: The ways in which women of society give birth have the power to influence maternal-infant health and shape the economy of the healthcare system. Today, the rates of cesarean sections are increasing throughout the world. In Argentina, on average, more than 35% of pregnant women received cesarean sections in 2008, with large differences observed in the rates between the public and private health sectors. The World Health Organization (WHO) has established that healthcare systems should only employ a cesarean section if labor cannot progress safely. According to this standard, the organization estimates that cesarean sections should only be utilized …

Anatomical, Functional And Metabolic Imaging Of Radiation-Induced Lung Injury Using Hyperpolarized Mri., Giles Santyr, Matthew Fox, Kundan Thind, Elaine Hegarty, Alexei Ouriadov, Michael Jensen, Timothy J Scholl, Jacob Van Dyk, Eugene Wong

Medical Biophysics Publications

MRI of hyperpolarized (129)Xe gas and (13)C-enriched substrates (e.g. pyruvate) presents an unprecedented opportunity to map anatomical, functional and metabolic changes associated with lung injury. In particular, inhaled hyperpolarized (129)Xe gas is exquisitely sensitive to changes in alveolar microanatomy and function accompanying lung inflammation through decreases in the apparent diffusion coefficient (ADC) of alveolar gas and increases in the transfer time (T(tr)) of xenon exchange from the gas and into the dissolved phase in the lung. Furthermore, metabolic changes associated with hypoxia arising from lung injury may be reflected by increases in lactate-to-pyruvate signal ratio obtained by magnetic resonance spectroscopic …

Vitamin D And White Matter Abnormalities In Older Adults: A Cross-Sectional Neuroimaging Study., C Annweiler, T Annweiler, R Bartha, F R Herrmann, R Camicioli, O Beauchet

Medical Biophysics Publications

BACKGROUND AND PURPOSE: Morphological brain changes related to hypovitaminosis D have been poorly studied. In particular, the age-related decrease in vitamin D concentrations may explain the onset of white matter abnormalities (WMA) in older adults. Our objectives were (i) to investigate whether there was an association between serum 25-hydroxyvitamin D (25OHD) concentration and the grade of WMA in older adults and (ii) to determine whether the location of WMA was associated with 25OHD concentration.

METHODS: One hundred and thirty-three Caucasian older community-dwellers with no clinical hydrocephalus (mean 71.6 ± 5.6 years; 43.6% female) received a blood test and a magnetic …

Development Of Models For The Study Of The Molecular Mechanisms Of Host Restriction And Adaptation Of Hantaviruses., Ryan Carroll Mcallister 1988-

Electronic Theses and Dissertations

Hantaviruses, family Bunyaviridae, are present throughout the globe in a variety of mouse, rat, mole, vole, shrew, or bat species. Hantaviruses persist for the lifetime of the animal reservoir, while causing no signs or symptoms of disease. Only the rodent-borne hantaviruses cause disease in humans. In contrast, a “spillover” infection of a hantavirus into a nonreservoir rodent species results in an asymptomatic acute infection. We and others in the field are interested in understanding the biology of these virus-host interactions and mechanisms that underlie these three very different outcomes. The second chapter of my thesis focused on probing the intrahost …

The Effect Of Spinal Cord Injury On Vagal Afferents., April N. Herrity

Electronic Theses and Dissertations

Spinal cord injury (SCI) is a significant public health concern that leaves patients with a multitude of life-long disabilities. Major complications of SCI apart from paralysis, include deficits in bladder and bowel function. Lower urinary tract dysfunction continues to remain a top priority issue affecting quality of life for this population. The majority of visceral organs receive a dual sensory innervation from both spinal nerves as well as the vagus nerve. Following SCI, the vagus nerve is a potential pathway through which information from regions below the level of a spinal injury can travel directly to the brainstem, bypassing the …

Suppression Of Invasion And Metastasis Of Triple-Negative Breast Cancer Lines By Pharmacological Or Genetic Inhibition Of Slug Activity., Giovanna Ferrari-Amorotti, Claudia Chiodoni, Fei Shen, Sara Cattelani, Angela Rachele Soliera, Gloria Manzotti, Giulia Grisendi, Massimo Dominici, Francesco Rivasi, Mario Paolo Colombo, Alessandro Fatatis, Bruno Calabretta

Department of Cancer Biology Faculty Papers

Most triple-negative breast cancers (TNBCs) exhibit gene expression patterns associated with epithelial-to-mesenchymal transition (EMT), a feature that correlates with a propensity for metastatic spread. Overexpression of the EMT regulator Slug is detected in basal and mesenchymal-type TNBCs and is associated with reduced E-cadherin expression and aggressive disease. The effects of Slug depend, in part, on the interaction of its N-terminal SNAG repressor domain with the chromatin-modifying protein lysine demethylase 1 (LSD1); thus, we investigated whether tranylcypromine [also known as trans-2-phenylcyclopropylamine hydrochloride (PCPA) or Parnate], an inhibitor of LSD1 that blocks its interaction with Slug, suppresses the migration, invasion, and metastatic …

Long-Acting Antituberculous Therapeutic Nanoparticles Target Macrophage Endosomes., Benson J. Edagwa, Dongwei Guo, Pavan Puligujja, Han Chen, Joellyn Mcmillan, Xinming Liu, Howard Gendelman, Prabagaran Narayanasamy

Journal Articles: Pharmacology & Experimental Neuroscience

Eradication of Mycobacterium tuberculosis (MTB) infection requires daily administration of combinations of rifampin (RIF), isoniazid [isonicotinylhydrazine (INH)], pyrazinamide, and ethambutol, among other drug therapies. To facilitate and optimize MTB therapeutic selections, a mononuclear phagocyte (MP; monocyte, macrophage, and dendritic cell)-targeted drug delivery strategy was developed. Long-acting nanoformulations of RIF and an INH derivative, pentenyl-INH (INHP), were prepared, and their physicochemical properties were evaluated. This included the evaluation of MP particle uptake and retention, cell viability, and antimicrobial efficacy. Drug levels reached 6 μg/10(6) cells in human monocyte-derived macrophages (MDMs) for nanoparticle treatments compared with 0.1 μg/10(6) cells for native drugs. …

Saturated Free Fatty Acids Induce Cholangiocyte Lipoapoptosis, Sathish Kumar Natarajan, Sally A. Ingham, Ashley M. Mohr, Cody J. Wehrkamp, Anuttoma Ray, Sohini Roy, Sophie C. Cazanave, Mary A. Smith, Justin L. Mott

Journal Articles: Biochemistry & Molecular Biology

Recent studies have identified a cholestatic variant of nonalcoholic fatty liver disease (NAFLD) with portal inflammation and ductular reaction. Based on reports of biliary damage, as well as increased circulating free fatty acids (FFAs) in NAFLD, we hypothesized the involvement of cholangiocyte lipoapoptosis as a mechanism of cellular injury. Here, we demonstrate that the saturated FFAs palmitate and stearate induced robust and rapid cell death in cholangiocytes. Palmitate and stearate induced cholangiocyte lipoapoptosis in a concentration-dependent manner in multiple cholangiocyte-derived cell lines. The mechanism of lipoapoptosis relied on the activation of caspase 3/7 activity. There was also a significant up-regulation …

Arsenic Targets Neural Plate Border Specifier Cells In P19 Cells, Christopher Mccoy

All Theses

Epidemiological studies have shown that arsenic exposure during early embryogenesis can cause reduced weight gain and neurological deficits later on in life. In addition, in vitro and in vivo studies have indicated that arsenic suppresses neurogenesis and myogenesis. The exact mechanism of how arsenic causes these undesired developmental outcomes is poorly understood, however both skeletal muscle and sensory neuron development require the Wnt/β-catenin signaling pathway to initiate the specific differentiation of precursor cells. We were interested in determining the target cell population of arsenic and its metabolites. Arsenic's metabolites were of interest because they have been shown to be more …

The Effects Of Conjugated Linoleic Acid Supplementation On Lipopolysaccharide-Challenged Synoviocytes, Allison Millican

All Theses

Osteoarthritis is one of the leading causes of lameness in the athletic horse. Cases of equine osteoarthritis typically present with synovitis, or inflammation of the synovium. This inflammation in the synovium leads to the production of inflammatory cytokines and eicosanoids. Although these downstream products can be beneficial, overproduction can lead to degradation of cartilage and joint disease. Opportunities to help mitigate or decrease inflammation within the joint are of current interest to the equine industry. One method being investigated is nutritional supplementation. The anti-inflammatory effects demonstrated by CLA supplementation make it a potential prospect for utilization in mitigating joint inflammation. …

Measuring The Role Of Inhibition In Auditory Discrimination In Mice, Tazima Nur

Graduate Theses and Dissertations

Understanding how inhibitory neurons affect sensory information processing in the cerebral cortex is an ongoing goal of both neuroscience and statistical physics research. In this master's thesis research project, an experimental system has been designed and built for studying how auditory dynamic range depends on inhibitory neurons, based on observations of mouse behavior. In this thesis, firstly, the topic of inhibition and information processing has been introduced. Then two papers related to inhibition and dynamic range has been reviewed in detail. One of the papers is an experimental work that analyzes the affect of inhibition on dynamic range. The other …

The Nutrient Intake Of Homeless Women Of Grand Rapids, Michigan, Emily D. Popma-Metsaars

Masters Theses

Background Homeless individuals comprise about 1% of the American population with 1/3 of this particular population being women. And despite the potential for hunger, the homeless population has a similar prevalence of overweight/obese as other Americans. The Heartside neighborhood of Grand Rapids is a very low-income area of the city, inhabited by the poor and homeless. The Food Access in Michigan Project is studying the relationship between food insecurity and food environments in Michigan.

Objectives The purpose of this study was to determine the characteristics of the diet of homeless women in Heartside. This study examined the level of food …

Effects Of Fatty Acid Structure On Endothelial Cell Expression Of Connexin43, Albert E. Sowers Iii

Masters Theses

The epidemic of obesity-related metabolic and cardiovascular diseases is linked to elevated fatty acids (FA). Epidemiological data argue that trans FA contribute to the development and progression of these disease processes. Previous work suggests the similarity in structure between saturated and trans FA may stimulate inflammation through trans FA interactions with toll-like receptor 4 (TLR4). To evaluate the impact of trans FA on cardiovascular health, the response of endothelial cells to trans FA was evaluated. Specifically, responses to the 18-carbon trans FA elaidic acid (EA) were compared to the same length cis FA oleic acid (OA). Endothelial cells were exposed …