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Articles 31 - 60 of 106
Full-Text Articles in Life Sciences
Local Forearm Heating Does Not Alter Concentrations Of Circulating Notch1 Ecd And Hspg/Cd44, Khushali Shrenik Parikh
Local Forearm Heating Does Not Alter Concentrations Of Circulating Notch1 Ecd And Hspg/Cd44, Khushali Shrenik Parikh
Electronic Theses and Dissertations
Endothelial dysfunction underlies the pathophysiology of cardiovascular disease. While advances have been made for treatment and management, many gaps in knowledge remain. Recently, heat therapy has gained attention for improving vascular endothelial function, tenably through increases in antegrade shear stress (SS). However, no study has examined the molecular mechanisms associated with SS and heating. Accordingly, the aim of this study was to determine how local forearm heating may impact Notch1 and Heparan Sulfate Proteoglycan (HSPG), which are transmembrane endothelial mechanosensors essential for preserving endothelial integrity and signalling. We hypothesized that 40-minutes of increased antegrade SS from forearm heating will increase …
A Novel Role For Enos In Regulating Lymphatic Valve Development During Embryogenesis, Drishya Iyer
A Novel Role For Enos In Regulating Lymphatic Valve Development During Embryogenesis, Drishya Iyer
USF Tampa Graduate Theses and Dissertations
Lymphedema is a disease that occurs when lymph flow is impaired, resulting in tissue swelling, fibrosis, chronic inflammation and recurrent secondary infections. Lymphatic valves play a critical role in maintaining unidirectional lymph flow and evidence for valve defects have been reported in lymphedema patients. The lack of drugs that can correct lymphatic valve defects warrants a better understanding of the molecular regulators of lymphatic valve development and maintenance. Lymphatic valves first develop during embryogenesis in response to mechanotransduction signaling pathways triggered by oscillatory lymph flow. Since eNOS (gene name: Nos3) is a well characterized mechanotransduction signaling molecule in blood vessels, …
Unearthing Complexity: Tangible Histories Of Water And Earth, Alexis Violet
Unearthing Complexity: Tangible Histories Of Water And Earth, Alexis Violet
Masters Theses
Unearthing Complexity investigates conceptions of time and surface through geological stories of the water and earth. Building on theories of deep time, hydrofeminism, critical zones, and grounding, I hope to foster a deeper awareness of time scales other than our own and a more tangible understanding of the embodied experience of matter in the universe. Working toward a new literacy of the water and earth in which they are recognized as living, changing bodies to which we are inherently tied at a molecular level, the site of this multiscalar inquiry occurs in the coastal zones of the Narragansett Bay where …
Role Of Chronic Stress-Induced Neuroinflammation In Rodent Locus Coeruleus Physiology And Anxiety-Like Behaviors, Arthur Anthony Alfonso Reyes
Role Of Chronic Stress-Induced Neuroinflammation In Rodent Locus Coeruleus Physiology And Anxiety-Like Behaviors, Arthur Anthony Alfonso Reyes
Graduate School of Biomedical Sciences Theses and Dissertations
The locus coeruleus (LC), the primary site of brain norepinephrine (NE), is a key anatomical brain region implicated in the stress response. Stress is a neuroendocrine physiologic response to a stressor that promotes organism survival through adaptive change and restoration of homeostasis. The central stress response, which drives behavioral and physiological change, is primarily mediated by activating the hypothalamic-pituitary-adrenal (HPA) axis. While advantageous in the short term, chronic stress exposure can lead to HPA axis and LC dysregulation, which are thought to contribute to the etiology of anxiety disorders. Previous studies demonstrate the effects of acute stress in increasing LC …
Hydric Physiology Of Lizards, Savannah Weaver
Hydric Physiology Of Lizards, Savannah Weaver
Master's Theses
Chapter 1: Animals can respond to extreme climate by behaviorally avoiding it, or by physiologically coping with it. We understand behavioral thermoregulation and physiological thermal tolerances, but water balance has largely been neglected. Climate change includes both global warming and changes in precipitation regimes, so improving our understanding of organismal water balance is increasingly urgent. We assessed the hydric physiology of endangered Blunt-nosed Leopard Lizards (Gambelia sila) by measuring cutaneous evaporative water loss (CEWL), plasma osmolality, body mass, and body condition throughout their active season. On average, G. sila had low CEWL that is likely desert-adaptive, and high …
Effects Of Intertidal Position On The Response To Oxygen And Desiccation Stress In The Common Acorn Barnacle, Balanus Glandula, Megan M. Dotterweich
Effects Of Intertidal Position On The Response To Oxygen And Desiccation Stress In The Common Acorn Barnacle, Balanus Glandula, Megan M. Dotterweich
Master's Theses
Sessile invertebrates in the rocky intertidal experience intermittent periods of air exposure due to tidal flux, presenting risks of temperature extremes, hypoxia, nutrient limitation, and most dangerously, desiccation. Microscale variation in severity and frequency of these risks is widely dependent on vertical position within the intertidal zone. Common acorn barnacles (Balanus glandula) have a wide vertical distribution in the intertidal, creating large differences in microhabitat between the highest and lowest individuals in the population. This study set out to explore whether tidal position dependent differences exist in the response to oxygen and desiccation stress in B. glandula. …
Southern Sea Otter (Enhydra Lutris Nereis) Fur Morphology, Thermal Function, And Buoyancy Across Ontogeny, Kate Riordan
Southern Sea Otter (Enhydra Lutris Nereis) Fur Morphology, Thermal Function, And Buoyancy Across Ontogeny, Kate Riordan
Master's Theses
Sea otters (Enhydra lutris) have the densest fur of any animal, and the hairs function to trap a layer of air that is used for insulation. When a sea otter is born, it has a natal pelage (baby fur), and sea otters eventually molt that fur and replace it with a pelt resembling the adult fur. Sea otter fur is composed of 3 types of hairs: underhairs, intermediate hairs, and guard hairs. Sea otters are more susceptible to the negative effects of oiling from oil spills compared to other marine mammal species because they solely rely on fur …
Biomechanical And Psychophysical Underpinnings Of Balance Dysfunction In Individuals With Traumatic Brain Injury, Naphtaly Ehrenberg
Biomechanical And Psychophysical Underpinnings Of Balance Dysfunction In Individuals With Traumatic Brain Injury, Naphtaly Ehrenberg
Dissertations
Falls are a major burden on healthcare infrastructure, especially in older adults and even more so in older individuals that are living in institutions. According to data from the Centers for Disease Control and Prevention (CDC), from 2010 to 2020, unintentional falls were the leading cause of nonfatal emergency department visits for all age groups except among individuals from 15-24 years of age, where unintentional falls ranked a very close second to being unintentionally struck by or against. Among older individuals living in the community, approximately 30-35% fall at least once in a given year, and around three times as …
Gpr75 Deficiency Attenuates High Fat Diet-Driven Obesity And Glucose Intolerance, Sakib Hossain
Gpr75 Deficiency Attenuates High Fat Diet-Driven Obesity And Glucose Intolerance, Sakib Hossain
NYMC Student Theses and Dissertations
Recently, a collaboration between Regeneron Pharmaceuticals and the Schwartzman-Garcia labs at New York Medical College published an exome sequencing study of individuals across the United Kingdom, United States, and Mexico which concluded that individuals possessing non-functioning, truncated mutations to the orphan g protein coupled receptor (GPCR), GPR75, had lower BMI and 54% reduced likelihood of obesity. The present study was undertaken to fully characterize the metabolic phenotype of Gpr75 deficient mice when fed a high fat diet (HFD) and explore potential mechanisms by which GPR75 activation links to increased adiposity and decreased glucose tolerance. After 14 weeks of HFD-feeding we …
Social Creatures: The Impact Of Solitary Confinement On Psychophysiological Health And How Inmates Percieve Their Humanity And Social Well-Being, Julia Austin
Honors Projects
This paper will define and examine the use of solitary confinement within the United States prison system and review its mental, physical, and social impacts. As social creatures, human mental and physical well-being depends on meaningful social interactions absent in segregation units. As it currently stands, vulnerable populations, including racial minorities, LGBTQIA+ individuals, and those with developmental disabilities or psychological disorders, are at risk of irrevocable harm and abuse within these facilities from staff as well as other inmates. With a rotating 80,000 inmates held in solitary confinement every day, the current structure of the prison system deemphasizes rehabilitation and …
Eco-Interoception: What Plants, Fungi And Protista Have Taught My Body, Sara Riley Dotterer
Eco-Interoception: What Plants, Fungi And Protista Have Taught My Body, Sara Riley Dotterer
Art Theses and Dissertations
To me, ecology is the relational, full-body awareness that I am made up of and deeply connected to everything around me; and for better or worse, this is reciprocal. I form ecotones, an ecological transitional zone between two ecosystems, with the world around me. I use this ecotonal lens to blur binaries and dissolve boundaries between me and the world “outside my body.” During my Masters of Fine Arts at Southern Methodist University, I have continuously explored and represented the lives of various more-than-human species outside of my body, including plants, fungi and protista through an ecotonal lens. Although these …
Comparing Calculated And Perceived Energy Needs In Collegiate Student-Athletes, Lyndsey T. Reed
Comparing Calculated And Perceived Energy Needs In Collegiate Student-Athletes, Lyndsey T. Reed
Honors Theses
The purpose of this study was to evaluate NCAA student-athletes' level of knowledge related to their energy needs. The participants were 75—42 male and 33 female—NCAA Division I student-athletes enrolled at the University of Mississippi (UM) from a variety of sports. In-person data collection took place at UM Athletics facilities by sports registered dietitians during team talks. The names of the athletes were used to find their pre-existing calculated energy, resting metabolic rate (RMR) and total energy expenditure (TEE) using the Nelson equation and the appropriate activity factor. Questionnaire and RMR/TEE data were analyzed and compared to assess knowledge related …
Remote Physiological Monitoring Of The Giant Panda And Red Panda Using Near Infrared Spectroscopy And Machine Learning, Qingyu Sheng
Remote Physiological Monitoring Of The Giant Panda And Red Panda Using Near Infrared Spectroscopy And Machine Learning, Qingyu Sheng
Theses and Dissertations
Appropriate conservation decisions and efforts must be based on real−time and accurate information about wildlife populations. However, it is extremely challenging to monitor the population demography and physiological traits of many threatened and secretive animal species through direct observation and capture. Near infrared spectroscopy (NIRS) has the potential to be a remote tool to address questions concerning wildlife physiology and demography by analyzing “signs” of animals without seeing or capturing them. In this dissertation, two species, the giant panda (Ailuropoda melanoleuca) and red panda (Ailurus fulgens) are used as a case study, to demonstrate NIRS’ feasibility …
Understanding Context Dependent Responses To Climate Change In Arizona Tiger Salamanders (Ambystoma Mavortium Nebulosum), Kentrell Richardson
Understanding Context Dependent Responses To Climate Change In Arizona Tiger Salamanders (Ambystoma Mavortium Nebulosum), Kentrell Richardson
Masters Theses, 2020-current
Future emissions scenarios project climate change to increase average global temperatures by at least two ℃ in the next 50 years resulting in changes in local climate and causing increased variability within microclimates. Ectotherms are especially sensitive to climate change due to their dependence on environmental temperatures to regulate physiological functions. Changes in temperature are likely to impact thermally cued processes within amphibians and result in changes in variable magnitudes and directions within local populations.
Salamanders were placed in cups and partially submerged in a water bath and heated at a rate of ~0.27℃/ minute. Once salamanders were unable to …
The Effects Of Acute Exercise On Memory: Considerations Of The Testing Effect, Philip Christian
The Effects Of Acute Exercise On Memory: Considerations Of The Testing Effect, Philip Christian
Honors Theses
This study had three main objectives. The first objective was to determine whether or not there was evidence of a testing effect being present when a short-term memory assessment is included along with a long-term memory assessment. The second objective was to determine whether acute exercise can improve long-term memory recall over a control condition. The third objective was to determine if the potential effects of acute exercise on long-term memory are confounded by the inclusion of a short-term memory assessment. Participants were 54 undergraduate students at the University of Mississippi, with an age range of 18-22 years old. Participants …
An Argument For The Utilization Of Amphibian Stress As An Indicator Of Wetland Condition, Andrew W. Sisson
An Argument For The Utilization Of Amphibian Stress As An Indicator Of Wetland Condition, Andrew W. Sisson
Honors College Theses
Traditional forms of rapid wetland condition assessments focus on foliage health, nutrient enrichment, chemical contamination, and surrounding land usage, often overlooking an evaluation of the animals living in the wetland. More intense assessments include the National Wetland Condition Assessment (NWCA) and indices of biotic integrity, which focus on community composition (e.g., diversity and species richness) and abundances. These indices require expertise in species identification and do not provide information about the animal’s fitness. Animal stress physiology, which generally correlates with measures used to quantify animal fitness (e.g., survival, reproduction, and body condition), may provide a complementary rapid assessment method aimed …
Comparative Energetics Of Mammalian Thermoregulatory Physiology, Ana M. Breit
Comparative Energetics Of Mammalian Thermoregulatory Physiology, Ana M. Breit
Electronic Theses and Dissertations
Endothermy allows species to decouple body temperature from environmental
temperatures but does not equate to endothermic species maintaining those constant temperatures. Instead, heterothermy fluctuating body temperatures, both in and outside of torpor is common and allows endotherms to expand the limits of thermoneutrality. Thermolability is likely to be more common in the tropics and subtropics, where species live within or above their thermoneutral zone. My dissertation research focused on the heterothermic-homeothermic continuum, specifically quantifying where on the continuum different species fall at certain times and why those species have evolved to be at those points. I quantified the thermal profile …
Does Vdac2 Have A Bh3 Domain?, Lillian Ferkany
Does Vdac2 Have A Bh3 Domain?, Lillian Ferkany
Honors Theses
Mitochondrial outer membrane permeabilization (MOMP) by Bax oligomerization triggers apoptosis. BCl-2 family proteins, classified as BH3 only proteins, pro-survival proteins, or pro-apoptotic proteins, control apoptosis partly through their agonist or antagonistic effects on Bax, which are mediated by their conserved BH3 domains. All BH3 domains form an alpha helix containing 5-7 conserved hydrophobic residues, designated H0-H5, and one conserved aspartic acid that drive interaction with Bax and other ‘multi-domain’ BCl-2 members. BH3 agonists induce Bax oligomerization, while BH3 antagonists sequester Bax to prevent MOMP. We discovered that voltage dependent anion channels (VDACs) in the MOM contain a putative BH3-like domain …
Seasonal Variation In Condition, Body Lipid, Reproductive Investment, And Diet In Brook Stickleback (Culaea Inconstans), Matthew P. Basista, Randal Snyder, Christopher Pennuto, Alicia Perez-Fuentetaja
Seasonal Variation In Condition, Body Lipid, Reproductive Investment, And Diet In Brook Stickleback (Culaea Inconstans), Matthew P. Basista, Randal Snyder, Christopher Pennuto, Alicia Perez-Fuentetaja
Great Lakes Center Masters Theses
North-temperate fishes are subject to significant changes in abiotic and biotic conditions across seasons, which are likely reflected in temporal differences in energy dynamics, reproductive investment, and diet. This study explores seasonal changes in body lipid content, female reproductive investment (GSI), body condition (Fulton’s K), and diet in brook sticklebacks (Culaea inconstans) in Western New York. I expected body lipid content and body condition would decline during the breeding season reflecting energy expenditure for reproduction, and these parameters would increase in the summer and fall prior to the onset of winter. Based on previous studies, I also expected …
Sexual Dimorphism Of Glomerular Capillary Morphology In Rats, Zackarias Coker
Sexual Dimorphism Of Glomerular Capillary Morphology In Rats, Zackarias Coker
Undergraduate Honors Theses
Chronic kidney disease (CKD) progresses faster in males than females; however, the underlying mechanisms remain poorly understood. Sex differences in glomerular capillary morphology has been hypothesized to contribute, in part, to the increased susceptibility to hypertension-induced renal injury and CKD progression in males, but this has not been investigated. The goal of the present study was to assess glomerular capillary morphology in male vs. female rats with intact kidneys and after uninephrectomy (UNX). We hypothesized that glomerular capillary radii (RCAP) and length (LCAP) would be greater in male rats.
Male (n=4) and female (n=4) with intact …
Review Of Biomedical Applications Of Cardiovascular Tissue Engineering, Natalie M. Howard
Review Of Biomedical Applications Of Cardiovascular Tissue Engineering, Natalie M. Howard
Honors College Theses
Tissue engineering can be defined as processes that aim to generate three-dimensional functional tissues in vitrothat have been favorably altered according to the structural, biochemical, electrophysiological, and biomechanical properties of the desired tissue before implantation into the human body. In relation to cardiac tissues, these properties would include the ability to conduct action potentials, withstand systolic pressure, permit sufficient O2 and CO2penetration, sufficient vascularization to supply nutrients for cellular activity, surface topology that enables cellular communication, and more. As heart diseases and instances of myocardial infarction continue to rise worldwide, there is an increasing need for …
Unveiling The Ancestral Function Of A Neuroendocrine Regulator, Pou-I/Pit1: Insights From Gene Expression Analysis In The Sea Anemone Nematostella Vectensis, Miguel Agostinho Pina Da Silva
Unveiling The Ancestral Function Of A Neuroendocrine Regulator, Pou-I/Pit1: Insights From Gene Expression Analysis In The Sea Anemone Nematostella Vectensis, Miguel Agostinho Pina Da Silva
Graduate Theses and Dissertations
Cnidaria (i.e., sea anemones, jellyfish, corals) and Bilateria (i.e., vertebrates, sea stars, fruit flies), are sister groups that diverged around 600 million years ago. Despite the long evolutionary time, many cellular differentiation mechanisms, cell types, tissues and behaviors are conserved. Such as neurons, mechanosensory hair cells, feeding behaviors, peristaltic movements, and sleep. Recent advances in genomics, molecular biology and microscopy have fueled an increased interest in understanding cnidarian nervous and neuroendocrine systems. Understanding the developmental mechanisms and the mode of operation of Cnidarian nervous systems helps to reconstruct the ancestral nervous system of the last common ancestor of Cnidaria and …
Validating A New In Vivo Model To Study Als, Izabela J. Cimachowska
Validating A New In Vivo Model To Study Als, Izabela J. Cimachowska
Student Theses and Dissertations
Buildup of oxidative stress and mitochondrial dysfunction are well known characteristics of both sporadic and hereditary amyotrophic lateral sclerosis (ALS). While both forms of the disease seem to arise from common cellular dysfunction, the genetic disease is studied to a much greater extent. Engineering novel animal models of the sporadic form of the disease is crucial for development of druggable targets to treat ALS and understand the underlying mechanisms. Interestingly, accumulation of oxidative stress by exacerbated emission of reactive oxygen species (ROS) from presynaptic mitochondria is a hallmark of both hereditary and sporadic ALS. Previous work by our laboratory showed …
Therapeutic Approaches To Working With Perinatal Loss Clients: A Grounded Theory Study, Heather H. Olivier
Therapeutic Approaches To Working With Perinatal Loss Clients: A Grounded Theory Study, Heather H. Olivier
University of New Orleans Theses and Dissertations
Perinatal loss (i.e., miscarriage, stillbirth, termination, and infant death) is commonly referred to in the literature as an invisible loss, non-loss, and even medical event. It is an ambiguous loss exhibiting the dialectical contradiction between the physical absence and psychological presence of the baby accompanied by disenfranchised grief, a reaction to a loss that is unacknowledged by society. Despite the likelihood of mental health clinicians working with clients who have experienced perinatal loss, there has yet to be a therapeutic model designed specifically for the unique grief and trauma reactions presented in this population. Existing grief models do not address …
Transcutaneous Electrical Stimulation Does Not Decrease Torque Loss Over High Intensity Repetitions, Ian Koskinen
Transcutaneous Electrical Stimulation Does Not Decrease Torque Loss Over High Intensity Repetitions, Ian Koskinen
All NMU Master's Theses
Transcutaneous Electrical Stimulation, TENS, has been used widely as an analgesic and ergogenic aid for many years. Compared to other modalities of electrical stimulation, TENS has been shown to provide some benefits in exercise performance by reducing pain and increasing endurance in low intensity applications, such as time trial cycling or isometric endurance. While TENS has been shown to have a significant effect on exercise induced pain in individuals performing endurance activities, to my knowledge it has not been examined in high intensity contractions. 18 active young adults (age: 23.11 years ± 2.08, resistance training experience: 7.08 years ± 3.79, …
Impacts Of Dietary Restriction On A Drosophila Model Of Werner Syndrome, Eileen Sember
Impacts Of Dietary Restriction On A Drosophila Model Of Werner Syndrome, Eileen Sember
College of Arts & Sciences Senior Honors Theses
Werner syndrome (WS) is an autosomal recessive disorder that results in premature aging and occurs in 1 in 1,000,0000 to 1 in 10,000,000 people. In humans, WS is the result of mutations that render the WRN gene, that contains a helicase and an exonuclease domain, non-functional. Currently, there is no cure for WS in humans, making dietary and lifestyle interventions attractive for increasing the quality and longevity of lives. Diet restriction (DR) has been shown to extend the lifespan of several model organisms, including Drosophila melanogaster, making it a strong candidate for WS treatment. In this thesis, mutant flies …
Oxygen Consumption In Highly Skilled Baseball Pitchers, Jesse Clingman
Oxygen Consumption In Highly Skilled Baseball Pitchers, Jesse Clingman
UNLV Theses, Dissertations, Professional Papers, and Capstones
The purpose of this study was to describe the physiological demands of highly skilled baseball pitchers during pitching, along with pitch metrics. Three junior college and three professional (n = 6) baseball pitchers participated in this study. Participants completed a graded exercise test (GXT) to volitional exhaustion to determine maximal oxygen consumption (VO2 max) and estimated body fat percentage, height, and body mass were measured on day one of testing. Next, participants faced live batters on a baseball field while wearing a portable metabolic analyzer (Cosmed K5) to measure respiratory gases including oxygen consumption (VO2) and carbon dioxide produced (VCO2) …
Anatomy Academy Service-Learning Project: Attacking The Epidemic Of Childhood Obesity, Kelsey Kjer, Rosedaveia Howell, Brennan Kitchen, Francesca Schutte
Anatomy Academy Service-Learning Project: Attacking The Epidemic Of Childhood Obesity, Kelsey Kjer, Rosedaveia Howell, Brennan Kitchen, Francesca Schutte
UNLV Theses, Dissertations, Professional Papers, and Capstones
The World Health Organization has classified childhood obesity as one of the most serious public health concerns in the world. Obesity is known to have detrimental health consequences and be a risk for comorbidities. On top of the consequences of obesity already seen in young children at school, a lack of health education interventions in many elementary schools remains a significant health disparity. Anatomy Academy (AA) is a seven-week curriculum designed to educate children about their bodies and the importance of gaining and maintaining a healthy lifestyle. The purpose of this service-learning project was to educate elementary school students in …
Adipocytes And Innate Immunity In Systemic Sclerosis, Nancy Wareing
Adipocytes And Innate Immunity In Systemic Sclerosis, Nancy Wareing
Dissertations & Theses (Open Access)
Systemic sclerosis (SSc; scleroderma) is a chronic systemic autoimmune and connective tissue disorder characterized by vasculopathy, autoimmune phenomena, and widespread fibrosis. Skin thickening and tightening is the cardinal feature of SSc and is responsible, in part, for the considerable morbidity of this disease. There are currently no targeted treatments for skin manifestations in SSc, primarily due to our fragmented understanding of its pathophysiologic mechanisms. In PART I, we report a previously unappreciated link between aberrant expression of the developmental gene sine oculis homeobox homolog 1 (SIX1) in skin-associated adipocytes in SSc skin and the early loss of dermal white adipose …
The Color Of Sound: An Insight On Chromesthesia, Lupe Rodriguez
The Color Of Sound: An Insight On Chromesthesia, Lupe Rodriguez
Honors Capstones
Many people can see with their eyes, but there are some people who can see through sound. Chromesthesia is when sound involuntarily evokes an experience of color through shapes and movement. The goal of this project is to show what this experience is like and give people an opportunity to experience it in a way themselves.
The Color of Sound Website Prototype