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Articles 1 - 13 of 13
Full-Text Articles in Medical Neurobiology
Chronic Stressors, Obesity Pathogenesis, And The Moderating Effect Of Internalized Weight Stigma; A Quantitative, Illinois Study, Karyn Byrne
Dissertations
The obesity epidemic is a ‘wicked’ problem with a complex web of determinants and outcomes. While generally higher for minoritized populations, prevalence rates manifest in surprising, nonlinear patterns. There is no consensus regarding treatment protocols or mitigation efforts, except that current efforts remain largely ineffective. Much research evidence that a profusion of determinants of health support obesity pathogenesis through various physiological processes and mechanisms, including the allostatic load, mitochondria functioning, the gut microbiome, and epigenetics. Intervening to support markers of the allostatic load (immunity, inflammation, and metabolic health) may provide a more effective treatment outcomes than traditional approaches, which tend …
The Adaptor Protein P66shc Governs Central Nervous System Cell Metabolism And Resistance To Aβ Toxicity, Asad Lone
Electronic Thesis and Dissertation Repository
Alzheimer’s disease (AD), a progressive and irreversible neurodegenerative disorder, and is the leading cause of dementia worldwide. It has been posited that AD is caused by the gradual deposition of toxic amyloid-b (Ab) plaques in the brain- that cause oxidative stress and eventually leads to neuronal death and synaptic loss. However, multiple therapies that either interfere with the production, or enhance the removal of Ab from the brain, have ultimately failed to slow or prevent AD. With the ever-increasing burden of AD worldwide, there exists an urgent need for novel therapeutic targets. The adult human brain is an energy demanding …
Causal Inference Methods For Estimation Of Survival And General Health Status Measures Of Alzheimer’S Disease Patients, Ehsan Yaghmaei
Causal Inference Methods For Estimation Of Survival And General Health Status Measures Of Alzheimer’S Disease Patients, Ehsan Yaghmaei
Computational and Data Sciences (PhD) Dissertations
Identifying optimal treatment options with respect to survival of Alzheimer's disease patients is crucially important and previously uninvestigated research question. Our objective was to estimate the causal effects of the most prevalent classes of Alzheimer’s disease drugs, Donepezil and Memantine, and their combined use on Survival and General Health Status Measures of Alzheimer's disease patients for the first five years after initial diagnosis. We carried out a thorough causal inference study using doubly robust estimators, nonparametric bootstrap confidence intervals, Bonferroni corrections for multiple comparisons and analyzing one of the largest high-quality medical databases containing millions of de-identified electronic health records …
Epileptic Seizure Classification Using Image-Based Data Representation, Amber Surles
Epileptic Seizure Classification Using Image-Based Data Representation, Amber Surles
<strong> Theses and Dissertations </strong>
Epilepsy is a recurrence of seizures caused by a disorder of the brain in over 3.4 million people nationwide. Some people are able to predict their seizures based off prodrome, which is an early sign or symptom that usually resembles mood changes or a euphoric feeling even days to an hour before occurrence. Consequently, the natural instincts of the body to react to an upcoming attack lends credence to the existence of a pre-ictal state that precedes seizure episodes. Physicians and researchers have thus sought for an automated approach for predicting or detecting seizures.
In this research, we evaluate the …
Neural Correlates Of Comorbidity Of Anxiety Disorders And Eating Disorders, Karsen Coelho
Neural Correlates Of Comorbidity Of Anxiety Disorders And Eating Disorders, Karsen Coelho
University Honors Theses
The presence of eating disorder and anxiety disorder comorbidity has raised the question of whether or not there is a causal relationship between them. Previous studies have found that this comorbidity has been present in various patients with anxiety disorders and eating disorders, going further to try and determine which diagnosis came first (Swinbourne et al., 2012). By conducting a literature review, studies were examined to determine neurobiological regions impacted by both disorders. Prefrontal cortex abnormalities are consistent among both disorders, contributing to differences in behavior and reward systems. With the irregular structure and activation of the amygdala, emotion and …
Systems Dynamics Of The Anterior Cingulate Cortex And Hippocampus In Behavioral Switching, Spatial Working Memory, And Disease, Ryan Wirt
UNLV Theses, Dissertations, Professional Papers, and Capstones
The electrophysiological properties of the hippocampus (HC) and anterior cingulate cortex (ACC) are the central focus of research on learning, memory, and neurological disease. Previous research has shown that HC is essential for forming new memories, spatial navigation, and temporal processing. While the function of ACC, located within the medial prefrontal cortex, remains controversial, it has a role in long-term memory recall, processing pain, monitoring current state, learning, schema updates, and information integrations. Interactions between the ACC and HC occur during social memory, spatial working memory performance, and long-term memory recall. Notably, the HC and ACC are among the first …
Investigating The Link Between O-Glcnacylation And Parkin In Parkinson’S Disease, Kathryn E. Henderson
Investigating The Link Between O-Glcnacylation And Parkin In Parkinson’S Disease, Kathryn E. Henderson
Selected Honors Theses
Parkinson’s Disease (PD) is a devastating neurodegenerative disease (ND) that is believed to impact around 1 million Americans, from both reported and nonreported cases. It is characterized by impaired motor and cognitive functioning resulting from a host of proposed causes, including the loss of dopaminergic neurons in the substantia nigra and the more debated aggregation of proteins. The role of proteins in PD is the focus of the following proposed research, which aims to evaluate the link between O-GlcNAcylation and the phosphorylation states of protein in NDs. This link has been investigated in other NDs such as Alzheimer’s as well …
Transferring Organelles Into Native Neurons: A Disease-Modifying Therapy For Neurodegenerative Disorders, Lohiny Balendran
Transferring Organelles Into Native Neurons: A Disease-Modifying Therapy For Neurodegenerative Disorders, Lohiny Balendran
Electronic Thesis and Dissertation Repository
Currently, there are no disease-modifying therapies to counter the progression of neurodegenerative diseases that are associated with mitochondrial dysfunction in the early stages. In this study, we have used a novel strategy of cell fusion to transfer mitochondria from one cell to another using fusogens (syncytin 1 and syncytin 2). Syncytins are placental proteins encoded by endogenous retroviral envelope genes that promote cellular fusion. In this study, we have proposed that donor cells engineered to stably express syncytin when cocultured with recipient cells will allow fusion and facilitate the transfer of mitochondria into recipient cells. Syncytin-mediated systems revealed about 16.6-18.5% …
Differential Transcriptional Alterations In Detoxification Genes In Parkinson’S Disease In Egypt, Nourhan Shebl
Differential Transcriptional Alterations In Detoxification Genes In Parkinson’S Disease In Egypt, Nourhan Shebl
Theses and Dissertations
PD is the most common motor neurodegenerative disease worldwide. The underlying cause of PD is still unknow, owingthis to the complexity of the disease. Often, genetics and environmental factors are collaborating in the initiation of the disease. Despite the diversity of its genetical and environmental profiles, the Egyptian population is one of the mostunderrepresented population in terms of PD research. In this study, we investigated PD through various perspectives tohighlight the complexity of the disease in Egypt, taking into consideration the diversity of the Egyptian population. We recruited PD patients and reference controls from 4 governorates: Cairo, Giza, Alexandria, and …
Support Their Sleep: Enhancing Nurses' Knowledge And Implementation Of Non-Pharmacological Sleep Protocols To Improve Patient Rest, Recovery, And Reduce Cognitive Impairment., David C. Barry
Master's Theses and Capstones
Background: Sleep and rest play an influential role in promoting recovery and healing in humans. Hospitalized patients are at risk for altered sleep from hospitalization, illness, and stimulation from a hospital environment. Non-pharmacologic interventions preformed by nurses can help to improve sleep and sleep environment for patients.
Local problem: There was no protocol or available information regarding patient sleep promotion for nurses to references when caring for patients.
Methods: Nurses in the microsystem (n=8) were administered a pre/post questionnaire containing Likert scales and a short quiz containing knowledge-based questions. Questionnaires were distributed to nurses prior to and after …
Copy Number Alterations Of Aggressive Pituitary Neuroendocrine Tumors, Grace Zhang
Copy Number Alterations Of Aggressive Pituitary Neuroendocrine Tumors, Grace Zhang
Scripps Senior Theses
Pituitary neuroendocrine tumors (PitNETs) are tumors of the pituitary gland. Although most are benign, they can cause severe morbidity if compression of surrounding tissue and/or endocrinopathies occur.
Aggressive PitNETs are notably detrimental and difficult to predict, and their effects are further exacerbated by challenges in treatment. Although histological studies can detect certain markers of tumor aggressiveness, they are insufficient at wholly predicting PitNET aggressiveness, making the clinical behavior of PitNETs challenging to determine. Since treatment of aggressive tumors also remains suboptimal, this further results in negative impacts on health and quality of life.
Genetic markers, such as copy number variations …
Examining A Blood Biomarker Approach To Blood-Brain Barrier Disruption, Samantha Ford
Examining A Blood Biomarker Approach To Blood-Brain Barrier Disruption, Samantha Ford
Theses and Dissertations--Medical Sciences
Blood-brain barrier disruption has been identified to associate with the pathogenesis several neurological diseases such as dementia [1, 2], multiple sclerosis[3, 4], acute or chronic cerebral ischemia[5], brain trauma[5], meningitis[5], encephalitis[5], stroke[6], and seizures[7]. Being able to effectively identify blood-brain barrier disruption is limited in methodology. The current standard is using a cerebrospinal fluid (CSF) albumin to serum albumin index, which requires the use of a lumbar puncture. A novel method of identifying blood-brain barrier disruption utilizing blood biomarkers is proposed in this study. Participants in this study had previously collected blood and CSF samples, which were analyzed to compare …
Visualization And Characterization Of The Immunological Synapse Between Chlorotoxin Chimeric Antigen (Cltx-Car) Redirected T Cells And Targeted Glioblastoma Tumors, Arianna Livi
CMC Senior Theses
Chimeric Antigen Receptor T (CAR-T) cells have demonstrated anti-tumor activity against aggressive and invasive cancers such as glioblastoma (GBM); however, clinical response rates remain low in clinical trial studies. Tumor heterogeneity and tumor microenvironment conditions pose significant challenges for treatment of GBM, thus continuous optimization of CAR-T cell therapies and identification of novel, widely expressed, and highly specific GBM antigens are vital to better patient outcomes. A newly developed CAR-T cell construct incorporating chlorotoxin (CLTX) as the targeting domain exhibited broad GBM-targeting capabilities and elicited potent cytotoxic effects during preclinical studies and is currently being tested in a phase I …