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Articles 1 - 7 of 7
Full-Text Articles in Medicine and Health Sciences
Hypothalamic Circuits Mediating Consumption And Anxiety, Ryan Cassidy
Hypothalamic Circuits Mediating Consumption And Anxiety, Ryan Cassidy
Dissertations & Theses (Open Access)
From 1960-2016, U.S. obesity prevalence increased 13-40% and diabetes increased from 3-15%. There is an epidemic of metabesity, the aggregate metabolic disorders produced by chronic overeating. Drugs for metabesity were developed in the 1930s with limited effectiveness; agents today rely on the same principles and are similarly ineffective. Particularly surprising has been the failure of satiety enhancers; this indicates it may not be that physiologic hunger drives chronic overeating. Although hunger and satiety affect traditional reward circuitry (Cassidy & Tong 2017), evidence for the primacy of this effect is mixed. Being hungry reduces anxiety-like behavior in mice; whether the …
Clinical And Therapeutic Significance Of Obesity In Melanoma, Jennifer L. Mcquade
Clinical And Therapeutic Significance Of Obesity In Melanoma, Jennifer L. Mcquade
Dissertations & Theses (Open Access)
While the FDA approval of targeted and immune therapies in metastatic melanoma (MM) have dramatically improved outcomes in this disease, de novo and/or acquired resistance can limit the clinical benefit of these agents. The IGF-1/PI3K/AKT pathway has been implicated in resistance to both targeted and immune therapy. The IGF-1/PI3K/AKT pathway has also been shown to play a key role in the pathogenesis of obesity in other malignancies. To date, the impact of energy balance on clinical outcomes and therapeutic response in MM has not been studied. I hypothesized that energy balance would impact the molecular biology, behavior, and drug sensitivity …
Mobilization Of Adipose Stromal Cells In Obesity And Cancer By Sparc And Its Proteolytic Isoforms, Chieh Tseng
Mobilization Of Adipose Stromal Cells In Obesity And Cancer By Sparc And Its Proteolytic Isoforms, Chieh Tseng
Dissertations & Theses (Open Access)
Obesity increases cancer risk and progression as shown by epidemiologic studies. However, the underlying pathophysiology remained unclear. Adipose stromal cells (ASC) are adipose tissue-derived mesenchymal progenitors, abundant in white adipose tissue (WAT). In this study, we show that the ASC pool is expanded in obesity and is associated with promoted tumor growth. Next, by using a chimeric GFP-RFP bone marrow transplant model, we observed higher tumor infiltrating cells with ASC phenotype in obese mice compared to lean. Consistently, systemic circulating ASC frequency is six fold higher in tumor-bearing obese mice compared to lean. The tumor infiltrating cells with ASC phenotype …
Factors Associated With Physical Activity In Kindergarten Children, Carol Hammonds
Factors Associated With Physical Activity In Kindergarten Children, Carol Hammonds
Dissertations & Theses (Open Access)
Background: Reversing obesity is an urgent public health need for children: worldwide, in 2011 more than 40 million children under the age of five were either overweight or obese. Increasing intensity and duration of physical activity is a strategy to aid in preventing and reducing obesity. A minimum of 60 minutes per day of moderate to vigorous physical activity is recommended for children. School settings, such as full-day kindergarten, where 74% of children in the United States are enrolled, provide opportunities for population-based interventions to increase physical activity, yet little objective data exist on current levels of physical activity in …
Acceleration Of The Panin Development In Mice Expressing Oncogenic K-Ras Due To A High Fat Diet, Bincy Philip
Acceleration Of The Panin Development In Mice Expressing Oncogenic K-Ras Due To A High Fat Diet, Bincy Philip
Dissertations & Theses (Open Access)
Obesity is postulated to be one of the major risk factors for pancreatic cancer, and recently it was indicated that an elevated body mass index (BMI correlates strongly with a decrease in patient survival. Despite the evident relationship, the molecular mechanisms involved are unclear. Oncogenic mutation of K-Ras is found early and is universal in pancreatic cancer. Extensive evidence indicates oncogenic K-Ras is not entirely active and it requires a triggering event to surpass the activity of Ras beyond the threshold necessary for a Ras-inflammation feed-forward loop. We hypothesize that high fat intake induces a persistent low level inflammatory response …
Gene By Bmi Interactions Influencing C-Reactive Protein Levels In European-Americans, Sarah Tudor
Gene By Bmi Interactions Influencing C-Reactive Protein Levels In European-Americans, Sarah Tudor
Dissertations & Theses (Open Access)
C-Reactive Protein (CRP) is a biomarker indicating tissue damage, inflammation, and infection. High-sensitivity CRP (hsCRP) is an emerging biomarker often used to estimate an individual’s risk for future coronary heart disease (CHD). hsCRP levels falling below 1.00 mg/l indicate a low risk for developing CHD, levels ranging between 1.00 mg/l and 3.00 mg/l indicate an elevated risk, and levels exceeding 3.00 mg/l indicate high risk. Multiple Genome-Wide Association Studies (GWAS) have identified a number of genetic polymorphisms which influence CRP levels. SNPs implicated in such studies have been found in or near genes of interest including: CRP, APOE, APOC, IL-6, …
An Assessment Of Obesity And Hyperphagia In Individuals With Smith-Magenis Syndrome, Carrie A. Crain
An Assessment Of Obesity And Hyperphagia In Individuals With Smith-Magenis Syndrome, Carrie A. Crain
Dissertations & Theses (Open Access)
Smith-Magenis syndrome (SMS;OMIM# 182290) is a multiple congenital anomalies and mental retardation syndrome caused by a 3.7- Mb deletion on chromosome 17p11.2 or a mutation in the RAI1 gene. Although the majority of the SMS phenotype has been well described, limited studies are available describing growth patterns in SMS. There is some evidence that individuals with SMS develop obesity. Thus, this study aims to characterize the growth and potential influence of hyperphagia in a cohort of individuals with SMS. A retrospective chart review was conducted of 78 individuals with SMS through Baylor College of Medicine (BCM) at Texas Children¡¯s Hospital …