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Articles 1 - 18 of 18
Full-Text Articles in Medicine and Health Sciences
Quantum Dots' Toxicity: A Multi-Level Investigation On The Impact Of Quantum Dots On The Actin Cytoskeleton, Nhi Le
MSU Graduate Theses
Quantum dots (QDs) are fluorescence nanomaterials with unique optical and physical properties. As such, they are highly sought after for their potential use in several biomedical and industrial applications. Despite their vast potential, recent studies have suggested that quantum dots are toxic to cells. Yet, the mechanism of quantum dots’ toxicity remains unclear. As such, my thesis aims to comprehensively examine the mechanism of quantum dots’ toxicity, emphasizing how quantum dots disrupt the actin cytoskeleton. In this study, I used RNA sequencing and mass spectrometry to investigate the influence of CdSe/ZnS QDs on the transcriptomic proteomic level of Saccharomyces cerevisiae …
Sex-Dependent Effects Of Induced Acute Inflammation On Glucose Homeostasis And Rna Editing Enzymes, Christian A. Rivas
Sex-Dependent Effects Of Induced Acute Inflammation On Glucose Homeostasis And Rna Editing Enzymes, Christian A. Rivas
MSU Graduate Theses
The first line of defense against bodily insults, like pathogen invasion, is the innate immune system. Innate immunity sets in motion countless cascades that result in inflammation. Inflammation simultaneously affects multiple biological processes like metabolism and gene expression. Males and females react differently to inflammation. To understand both molecular and physiological sex differences in inflammation, we examined how inflammation affects gene expression and glucose metabolism. Adenosine deaminase acting on RNA (ADAR1) is upregulated by inflammation and catalyzes RNA editing, a process where nucleotides encoded by the genome are modified. ADAR1 also controls the innate immune reaction by decreasing activity of …
A Comparison Of Peak Ground Reaction Forces Of Pitches From The Stretch And Windup, Richard D. Edwards
A Comparison Of Peak Ground Reaction Forces Of Pitches From The Stretch And Windup, Richard D. Edwards
MSU Graduate Theses
Ground reaction forces can help coaches and players understand the lower extremity biomechanics of pitching in baseball. Research has told us that there are repeatable characteristics of ground reaction forces that pitchers produce during a pitch. This study examines the differences in peak ground reaction forces produced from pitching from the stretch versus pitching from the wind-up. Five variables were recorded for each pitch from the push-off leg and the landing leg. Landing forces were then compared to landing forces of the other pitching style and the same comparison was made for the push-off leg. This was achieved by altering …
Investigation To Examine The Profile Of Auditory Brainstem And Hearing Thresholds Using Tone Burst Audiometry Brainstem Response In A Preclinical Migraine Model, Megan Huelsing
MSU Graduate Theses
Migraine is a disabling neurological disease that is characterized by prominent auditory symptoms, including hyperacusis, which is defined as extreme sensitivity to sounds. The goal of this study was to investigate changes in hearing sensitivity and neural changes in the brainstem by measuring neural activity of the auditory brainstem in an established preclinical model of chronic migraine. To induce a chronic migraine state within the trigeminal system, male and female Sprague Dawley rats were subjected to three known human risk factors including neck muscle tension and REM sleep deprivation that promote latent sensitization, and exposure to a pungent odor, which …
A Study Of Cobalt (Iii) Oxide Nanoparticle Delivery Of Sirna Molecules Directed Against Signaling Intermediates Of The P2y2 Receptor, Rachel Blair Stroud
A Study Of Cobalt (Iii) Oxide Nanoparticle Delivery Of Sirna Molecules Directed Against Signaling Intermediates Of The P2y2 Receptor, Rachel Blair Stroud
MSU Graduate Theses
G protein-coupled receptors are evolutionarily ubiquitous sensors of extracellular signals, propagating intracellular signal cascades through heterotrimeric G proteins. P2Y2 receptors are GPCRs which are activated by extracellular nucleotides to mediate signaling cascades via Gαq coupling. Many GPCRs are subject to a common mechanism for signal termination involving phosphorylation of the C-terminal tail followed by β-arrestin binding and subsequent endocytic internalization of the complex. This effect has been described for the P2Y2 R in the 1321N1 astrocytoma cell line, and UTP-induced activation and desensitization profiles have been previously defined. There is need to develop molecular vehicles for safe and …
A Comparison Of The Magnitude Of The Mental Health Benefits Of Exercising Outdoors Vs Exercising Indoors: A Review, Greta M. Rueschmann
A Comparison Of The Magnitude Of The Mental Health Benefits Of Exercising Outdoors Vs Exercising Indoors: A Review, Greta M. Rueschmann
MSU Graduate Theses
Many people in the United States suffer from poor mental health which can lead to suicide, self-harm, or negative effects on job performance and relationships. Not everyone can afford traditional therapy nor feels comfortable with it. With a greater emphasis placed on taking care of one’s mental health during the COVID-19 pandemic, there should also be a greater emphasis placed on finding alternative types of therapy that can be matched to individuals based on their personalities and preferences. One such alternative is outdoor exercise. This review was conducted to examine whether exercising or performing physical activity outdoors results in greater …
The Role Of The Host Factor Sptbn1 In Hiv-1 Infection Of Microglial Cells, Marc Gordon Havlicek
The Role Of The Host Factor Sptbn1 In Hiv-1 Infection Of Microglial Cells, Marc Gordon Havlicek
MSU Graduate Theses
HIV-1 is the etiological agent that cause AIDS. Since the 1980’s when HIV-1 was discovered, much has been discovered, however a cure for HIV-1 has eluded researchers. Effective therapeutics do exist but can have adverse side effects including HAND/HAD which leads to neurodegeneration in patients regardless of viral suppression. One area of research that holds the possibility of discovering new viral targets and therapeutics is host factor interaction within the replication process. One host factor that can cause a decrease in HIV-1 infectivity is SPTBN1. SPTBN1 is a cytoskeletal protein that was shown to bind to the capsid and nucleocapsid …
Intracellular Trafficking And Distribution Of Cd And Inp Quantum Dots In Hela And Ml-1 Thyroid Cancer Cells, Min Zhang
MSU Graduate Theses
The study of the interaction of engineered nanoparticles, including quantum dots (QDs), with cellular constituents and the kinetics of their localization and transport, has provided new insights into their biological consequences in cancers and for the development of effective cancer therapies. The present study aims to elucidate the toxicity and intracellular transport kinetics of CdSe/ZnS and InP/ZnS QDs in late-stage ML-1 thyroid cancer using well-tested HeLa cells as a control. The XTT viability assay showed that ML-1 cells, and non-cancerous mouse fibroblast cells, exhibit no viability defect in response to these QDs, whereas HeLa cell viability decreases. These results suggest …
Modulation Of Glucose Homeostasis By Nucleotide P2y2 Receptor And Biological Sex, Hailee Anne Marino
Modulation Of Glucose Homeostasis By Nucleotide P2y2 Receptor And Biological Sex, Hailee Anne Marino
MSU Graduate Theses
Recent insights into the pathological role of Nucleotide P2Y2 receptor suggest P2Y2R involvement in high fat diet-induced obesity and potentiates insulin resistance. However, these recent insights do not demonstrate how P2Y2R modulates glucose homeostasis under physiological conditions. Further, it remains unknown how sex biological factors influence P2Y2R receptor signaling in the regulation of glucose homeostasis. The research objective for the present study is to elucidate the novel roles of P2Y2 in fasting blood glucose and glucose tolerance (basal insulin sensitivity) under resting conditions in males and females. We expected that under physiological …
Nucleotide P2y₂ Receptor-Dependent Leukocyte-Endothelial Interaction, Spencer E. Thomas
Nucleotide P2y₂ Receptor-Dependent Leukocyte-Endothelial Interaction, Spencer E. Thomas
MSU Graduate Theses
Extracellular nucleotides (ATP, UTP) released from cells act on nucleotide receptors to promote vascular inflammation. Increased leukocyte-endothelial interaction is a hallmark of vascular inflammation. The nucleotide P2Y₂ receptor (P2Y₂R), activated by extracellular ATP≈UTP, plays a role in cardiovascular homeostasis and immune regulation. Moreover, accumulating evidence from studies in vitro and in vivo models have implicated the P2Y₂R in the inflammatory response significantly contributing to the progression and pathogenesis of asthma, atherosclerosis, sepsis, and ischemia. I hypothesized that P2Y₂R activation by UTP, an agonist of the receptor, increased leukocyte rolling and adhesion in the microvasculature from baseline. To test the hypothesis, …
Sodium Pyruvate Ameliorates Influenza A Virus Infection In Vitro And In Vivo, Jessica M. Reel
Sodium Pyruvate Ameliorates Influenza A Virus Infection In Vitro And In Vivo, Jessica M. Reel
MSU Graduate Theses
Pyruvate is produced in duplicate at the end of glycolysis in addition to ATP and NADH. Pyruvate is the metabolite of choice in most cells, whether obtained exogenously or endogenously. Recently we found that the addition of pyruvate’s conjugate base, sodium pyruvate, to cell culture media dampened the immune response to influenza A virus (IAV) infection in cultured innate immune cells. Thus, I decided to investigate the mechanism and potential for treatment of IAV. In vitro using bone marrow derived macrophages that were infected with IAV we found that adding sodium pyruvate to the media decreased immune signaling pathways through …
Psychometric Analysis Of A 9-Item M-Hooked-On Nicotine Checklist For Vaping Among College Students, Joshua B. Devine
Psychometric Analysis Of A 9-Item M-Hooked-On Nicotine Checklist For Vaping Among College Students, Joshua B. Devine
MSU Graduate Theses
Background: Adolescent participation in electronic vapor products (EVP) is on the rise and with it many new health concerns present themselves. EVP use tripled among high school and middle school students from 2013-2014 and has continued to grow. Previous nicotine related studies have shown that the earlier the age of initiation to nicotine, the higher likelihood to develop a nicotine dependence. Methods: Using the “Hooked on Nicotine Checklist” (HONC) current rates of nicotine dependence among college students at a southwest Missouri university was assessed. One hundred and fifty-six students were recruited from a KIN 210 class as a convenience sample. …
Elucidating The Developmental Defects In Zebrafish Associated With The Cardiac Drug Verapamil, Blake Stephan Justis
Elucidating The Developmental Defects In Zebrafish Associated With The Cardiac Drug Verapamil, Blake Stephan Justis
MSU Graduate Theses
Birth defects are abnormalities in a developing organism that lead to a malformation in structure or function. Over half of birth defects have no determined cause; however, known causes occur by genetic anomalies, exposure to environmental agents (a.k.a. teratogens), or multifactorial reasons. To explain the unknown causes of birth defects, an area of focus in this study is to identify potential teratogens. Identifying these teratogens, is key to preventing future birth defects. An obvious source of teratogens in pregnant women would be that of pharmaceuticals. Thus, a main goal of this study is to identify drugs that cause birth defects. …
Elucidating Immune Signaling Of Influenza A Virus And Aspergillus Fumigatus Co-Infections Through Pioneered Model Development, Meagan Danyelle Rippee-Brooks
Elucidating Immune Signaling Of Influenza A Virus And Aspergillus Fumigatus Co-Infections Through Pioneered Model Development, Meagan Danyelle Rippee-Brooks
MSU Graduate Theses
Bacterial co-infections with influenza A virus (IAV) are extremely serious and life-threatening. However, there exists limited understanding about the importance of fungal infections with IAV. Clinical case reports indicate that fungal co-infections do occur and suggest the IAV pandemic of 2009 had a propensity to predispose patients to secondary fungal infections more than previous IAV strains. IAV-fungal co-infections are marked by high mortality rates of 47 to 61% in previously healthy individuals between the ages of 20 and 60. Yet, the variables involved in this co-infection remain undetermined. I achieved effective recapitulation of this co-infection using a C57Bl/6 murine (mouse) …
Further Characterization Of The Skeletal Phenotype In A Hurler Syndrome Mouse Model And The Ethical Treatment Of Children In Medicine, Anna Marie Mcwoods
Further Characterization Of The Skeletal Phenotype In A Hurler Syndrome Mouse Model And The Ethical Treatment Of Children In Medicine, Anna Marie Mcwoods
MSU Graduate Theses
Mucopolysaccharidosis type I (MPS I) is a rare, autosomal recessive disorder caused by the deficiency of the lysosomal enzyme α-L-iduronidase (IDUA). Absence of IDUA results in the accumulation of dermatan and heparin sulfate and ultimately causes multi-system dysfunction. The most severe form of MPS I is Hurlers syndrome, a rapidly progressive disorder that, if left untreated, is fatal. Current treatment options for diagnosed individuals includes hematopoietic stem cell transplantation (HSCT) and enzyme replacement therapy (ERT). These treatments are able to ameliorate the majority of symptoms with the exception of the bone phenotype. This investigation aimed to further characterize the bone …
Orthorexia Nervosa Among Collegiate Female Student-Athletes, Maryse Bard-Martel
Orthorexia Nervosa Among Collegiate Female Student-Athletes, Maryse Bard-Martel
MSU Graduate Theses
Orthorexia nervosa (ON) is a specific style of disordered eating defined as an unhealthy obsession with eating healthy food, or going to extremes in the pursuit of a diet that is supposed to be good for you. The purpose of this study was to explore the prevalence of orthorexia nervosa tendencies in college female soccer players in the NCAA Division 1. Purposive sampling was used, and participants were current student-athletes from the Missouri State women’s soccer team (n=18). Survey research was utilized to assess athletes’ attitudes and behaviors related to various aspects of diet and training, and the control it …
Dietary Inclusion Of Enriched Chicken Bone Broth Prevents Trigeminal Sensitization Meditated By Early Life Stress, Orion Peterson
Dietary Inclusion Of Enriched Chicken Bone Broth Prevents Trigeminal Sensitization Meditated By Early Life Stress, Orion Peterson
MSU Graduate Theses
Early life stress is considered a risk factor for development of migraine, which is a prevalent painful neurological disorder involving sensitization and activation of trigeminal neurons, and irritable bowel syndrome, a condition often comorbid with chronic migraine. The focus of my study was to determine the effects of early life stress and dietary inclusion of enriched chicken bone broth on trigeminal nociceptor sensitization and the gut microbiota. Adult Sprague-Dawley male “sender” rats subjected to primary traumatic stress were placed next to breeding or pregnant female rats that served as “receiver” rats (secondary traumatic stress) and in proximity to the offspring …
Enhanced Production Of Pro-Il-1Βeta Contributes To Immunopathology During The Coinfection Of Influenza A Virus And Streptococcus Pneumoniae, Angeline E. Rodriguez
Enhanced Production Of Pro-Il-1Βeta Contributes To Immunopathology During The Coinfection Of Influenza A Virus And Streptococcus Pneumoniae, Angeline E. Rodriguez
MSU Graduate Theses
Viral bacterial coinfections are known to cause severe pneumonia, especially in the elderly and in pediatric patients. Antibiotics like β-Lactams kill the bacteria but fail to improve symptoms suggesting a faulty immune system may play an important role in the disease. Interleukin-1β (IL-1β) is an important immune signaling cytokine responsible for inflammation. It exists as an inactive precursor that can be activated by caspase-1 containing inflammasomes (multi-protein complex). Influenza A virus (IAV) and Streptococcus pneumoniae (S. pneumoniae) activate the inflammasome through the NOD-like receptor protein NLRP3 and/or AIM2. Previous reports in mice indicate that IL-1β levels are dramatically …