Medicine and Health Sciences Commons^™

Role Of Smad2 And Smad3 On Adipose Tissue Development And Function, Roshan Kumari

Theses and Dissertations (ETD)

Introduction: Obesity and its associated metabolic syndrome are major medical problems worldwide including United States. Adipose tissue is the primary site of energy storage, playing important roles in health. Adipose tissue also has other critical functions, producing adipocytokines and contributing to normal nutrient metabolism, which in turn play important roles in satiety, inflammation, and total energy homeostasis. Activin A and activin B play important roles in maintaining body composition and energy homeostasis. This dissertation highlights the role of activin/SMADs signaling in adipose tissue development, function, and maintenance.

SMAD2/3 proteins are downstream mediators of transforming growth factor-β (TGFβ) family signaling, including …

Attenuation Of Interferon Responses In The Obese Host And Ramifications For Influenza Virus Evolution, Rebekah Reed Honce

Theses and Dissertations (ETD)

The most insidious pandemic of modern life does not arise from an infectious agent but rather from malnutrition. With its global incidence tripling over the past three decades, obesity is a major public health concern. Obesity’s rising prevalence has also illuminated its impact on communicable diseases. Following the 2009 H1N1 influenza A virus pandemic, obesity was identified as a risk factor for increased disease severity and mortality in infected individuals. Obesity causes a chronic state of meta-inflammation with systemic implications for immunity, including delayed antiviral responses to influenza virus infection, poor recovery, and impaired immunological memory. However, the majority of …

The Role Of Secretory Phospholipase A2 Group Iia In Obesity And Metabolism, Michael S. Kuefner

Theses and Dissertations (ETD)

Secretory phospholipase A2 group IIA (PLA2G2A) is a member of a family of secretory phospholipases previously implicated in inflammation, atherogenesis, and antibacterial actions. These enzymes hydrolyze glycerophospholipids at the sn-2 position releasing lysophospholipids and fatty acids. Though studies have shown PLA2G2A is pro-inflammatory and promotes atherosclerosis, no research has analyzed the role of this enzyme in obesity and metabolism. Studies in the past 5-10 years utilizing various knock- out or over-expression mouse models have analyzed the role of different secretory phospholipase A2s (sPLA2) in metabolic diseases. From these studies, it is known that at least seven of the 11 sPLA2 …

An Interface Of The Taste And Reward Systems In The Brainstem And Its Role In Feeding, Louis Saites

Theses and Dissertations (ETD)

We eat what tastes good. We also eat because it is necessary for our health. In fact, some of the most nutritious foods (e.g., vegetables) are often less appetizing, and the tastiest (e.g., fast food, ice cream) may be the least healthy. Despite the former, we may also have a lower limit of what we accept at which point nutrition becomes irrelevant (e.g., “spinach is just too yucky”). Further, we may eat unhealthily because of overwhelming urges. We investigated the complex interactions of taste and feeding at the neurobiological level using the experiments described.

In one sense, this neurobiology begins …

Examining The Associations Between Depressive Symptoms, Body Mass Index, And Physical Activity Self-Efficacy In African American Mother-Child Dyads, Y'Esha Vonyae Williams

Theses and Dissertations (ETD)

In recent decades the prevalence of childhood and adult depression and obesity has increased worldwide. Multiple factors influence the onset of both depression and obesity. Individual manifestations of depressive symptomatology and health-related problems associated with obesity vary; however, genetics and environmental and psychological factors have been implicated as correlates. Consequently, both disorders can ultimately interfere with individuals’ activities of daily living and decrease their quality of life. African American women are known to have a higher prevalence of obesity and more severe depressive symptoms in comparison to Caucasian women. Likewise, African American children are more obese and experience many factors …

Dopaminergic Genetic Contributions To Obesity In Kidney Transplant Recipients, Ashley Grimes Stanfill

Theses and Dissertations (ETD)

Background: Kidney transplant recipients are a population who experience a high likelihood of gaining a significant amount of weight (between 6 and 13 kilograms) during the first year after transplantation. However, not all kidney transplant recipients gain weight. Studies have found little difference in physical activity and nutritional intake among those who do and do not gain weight. Immunosuppressant medications have also not been shown to play a substantive role in post-transplant weight gain. Additionally, although some studies have shown that age, gender, and race can influence weight gain, this information does not fully capture the observed variance. These observations …

Effect Of Obesity On The Traditional And Emerging Cardiovascular Disease Risk Factors In African American Women, Queen Obiageli Henry-Okafor

Theses and Dissertations (ETD)

Background: Obesity is a growing health care concern with cardiovascular disease (CVD) implications. African American women (AAW) have the highest prevalence rate of obesity and highest CVD morbidity and mortality rate of all ethnic groups. The traditional CVD risk factors have not been sufficient to explain this disparity in disease prevalence and outcomes. Current knowledge is limited regarding the interaction between various levels of adiposity and both traditional and emerging CVD risk factors, particularly in AAW. This study sought to explore these interactions.

Methods: The study design was a cross-sectional, descriptive, correlational analysis of 48 AAW ages 18 to 45 …

The Effects Of Glucose Tolerance, Hypertension, And Race On Heart Rate Variability, Qt Interval Duration, And Left Ventricular Hypertrophy In Overweight-Obese Adolescents, Shirleatha T. Lee

Theses and Dissertations (ETD)

The prevalence of childhood obesity has increased remarkably within the past ten years with black youth disproportionately affected. Childhood obesity is linked to cardiovascular risk. Purposes of this study were to explore relationships between cardiac autonomic risk factors of heart rate variability (HRV), QT corrected (QTc) Interval duration, and Cornell voltage measures for left ventricular hypertrophy (LVH) to body mass index (BMI), relative body mass index (RBMI), and blood pressure (BP) measures, and to examine the effects of impaired glucose tolerance (IGT), hypertension, and race on these cardiac autonomic risk factors in overweight-obese adolescents.

Methods: Overweight and obese adolescents (N …

Predictors Of Depressive Symptoms And Obesity In African American Women Transitioning From Welfare To Work, Mayola Rowser

Theses and Dissertations (ETD)

Depression and obesity are significant public health problems that adversely affect the health and quality of life of women in the United States, particularly female African American welfare recipients transitioning to work. African American women are twice as likely to experience depressive symptoms as women of other races. Fifty percent of African American women are obese. The prevalence of depression and depressive symptoms and obesity is higher among African American women who receive welfare benefits. These health conditions jeopardize their health status, ability to work, and chances to become self-sufficient. To ensure the successful transition of recipients to work, health …