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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
181

Cardiac effects of acute hyperinsulinemia and chronic fat feeding

Tadinada, Satya Murthy 01 August 2019 (has links)
Diabetic cardiomyopathy characterized by left ventricular hypertrophy predisposes diabetic and obese individuals to development of cardiac dysfunction and subsequently to heart failure. Whether hyperinsulinemia has an underlying role in development and or progression of diabetic heart disease is not well understood. We therefore studied the effects of acute hyperinsulinemia on cardiac function in euglycemic states. Acute hyperinsulinemia neither affected baseline nor inotropic response to β-adrenergic stimulation. Previous studies from our laboratory have indicated a potential role for GRK2, a serine threonine kinase in development of cardiac dysfunction in diabetic states in humans as well as in mice. To assess whether GRK2 mediates the detrimental effects of chronic hyperinsulinemia on cardiac dysfunction in mouse model of diet induced obesity, we utilized cardiomyocyte knockout of GRK2. Our results suggested lack of cardiac functional impairments in high fat fed wildtype mice, which hindered our attempts to ascertain the role of GRK2 in diabetic cardiomyopathy. Mouse models of diet induced obesity have been routinely used to study the effects of obesity and diabetes on cardiac dysfunction but recent evidence from multiple research groups has emphasized the need for evaluation of the utility and relevance of the murine diet induced obesity model for studying cardiovascular abnormalities associated with hyperinsulinemic states, including T2DM and obesity. We therefore studied the effect of chronic fat feeding (>20 weeks) alone or in combination with concomitant hypertension on cardiac function in C57BL/6J mice. Different diets were formulated with either lard (32% saturated fat, 68% unsaturated fat) or hydrogenated coconut oil (95% saturated fat) as the source of fat and fatty acids, which contributed 60% of total calories. Insulin resistance and glucose intolerance were readily observed in mice fed a high fat diet in each of the studies. HFD resulted in the development of cardiac hypertrophy; however cardiac function as measured by B-mode echocardiography and LV catheterization was unaffected in high fat diet groups compared to their respective control diet groups. Further, dietary fat feeding regardless of the source of fat modestly altered the gene expression of a few pathological hypertrophic markers or of fibrosis related genes. However, there was an increase in expression of PPARa target genes such as Pdk4 and fatty acid metabolism genes including CD36, AcadL and Cpt1b. Cardiac mitochondrial function as assessed by oxygen consumption rates, ATP synthesis rates and reactive oxygen species production rates were unaltered in high fat diet fed mice. These results suggest that while chronic fat feeding in mice causes cardiac hypertrophy and potentially cardiometabolic remodeling, it might not be sufficient to activate pathological hypertrophic mechanisms that impair cardiac function and cause cardiac fibrosis.
182

Preventing Obesity and Type 2 Diabetes in Immigrant Populations

Chikuta, Maxwell K 01 January 2019 (has links)
Obesity-related diseases have been increasing in African immigrants throughout the United States. Although research has been done to identify risk factors associated with many ethnic groups in the United States, only a few studies exist that explore obesity and type 2 diabetes diseases among Central African immigrants. The conceptual framework for this qualitative case study was social constructivism and the health belief model. The primary research question addressed the potential underlying causes for an increase in obesity and type 2 diabetes among Central African Immigrants. The secondary research questions explored how culture, illiteracy, and religion contribute to the problem of obesity in Central African immigrants, and what strategies could be effective in preventing and reducing the increase of obesity and type 2 diabetes in this population. Interviews with 17 Central African immigrants living in the northeastern U.S. were conducted to explore their social, cultural, and behavioral factors that influence the prevalence of obesity. Interview responses were transcribed and entered into NVivo software for data analysis. The results revealed that socioeconomic issues, cultural differences, and language gaps were the primary risk factors. Feeling stressed and overwhelmed and a lack of communication were also found to be significant. The results could provide health administrators and health educators with a platform for advancing policies and programs to foster greater health and well-being among Central African immigrants and thus contribute to the overall social welfare of Central African immigrants.
183

Type 2 Diabetes Prevention Program in the Medical Office Clinic

Ezirim, Jovita Chibuzo 01 January 2015 (has links)
The challenge of diabetes prevention is to reduce the financial and human costs of diabetes by preventing new cases and enacting social change. African Americans and Hispanics Americans have a high incidence of Type 2 diabetes because of factors that place them at risk for prediabetes. The purpose of this project was to plan the implementation and evaluation of a Type 2 diabetes prevention program in a medical office clinical setting. The clinic of interest was located in the downtown area of the city and provided care mostly to African American population. The Iowa model of evidence-based practice formed the theoretical framework for the study. The goal was to decrease the number of African Americans patients who will convert from prediabetes to Type 2 diabetes in the medical office clinic. The program was planned using the information from the Center for Disease Control and Prevention Road to Health toolkit. The outline covered a 6-week program. A pretest will be given to assess baseline knowledge of diabetes and diabetes prevention. The same test will be given after the implementation to evaluate if the program enhanced diabetes and diabetes prevention knowledge. Six months after the implementation of the program, nurses will complete a chart review to evaluate how many patients converted from pre-diabetes to Type 2 diabetes since the implementation of the project. The project will lead to the integration of a Type 2 diabetes prevention program in a medical clinic. It will increase the number of African Americans with prediabetes who will engage in lifestyle modification behavior. The project will also decrease the incidence of Type 2 diabetes among African Americans and reduce the health disparity of diabetes among the population.
184

Physician-Patient Relationships and Their Effect on T2DM Patient Treatment Adherence

Schmidt, Cindy 01 January 2018 (has links)
Type 2 diabetes (T2DM) is a health epidemic that continues to worsen. A major concern is that treatment adherence rates hover around 50%, despite the introduction of new medications, treatments, and technology. Lack of adherence by patients can lead to complications like blindness, kidney disease, and amputations. While there have been many studies conducted to evaluate patient factors related to adherence, fewer studies have been conducted to evaluate the role of the physician-patient relationship. The purpose of this study was to examine the correlation between the physician-patient relationship and patient treatment adherence, and examine the moderators of age, education, ethnicity, and income. Gender was included as a moderator in a secondary analysis. Two theories formed the theoretical framework of this study: biopsychosocial model and self-efficacy theory. This quantitative nonexperimental study was completed with survey data collected from 92 participants in the United States ages 18 or older who were under treatment for T2DM for at least a year, and who had seen their physician at least once in the previous year. Correlational and regression analyses were conducted using data from the modified Clinician and Group Survey and the Diabetes Management Self-Questionnaire. The physician-patient relationship predicted treatment adherence, and gender moderated the relationship. These findings suggest the importance of the physician-patient relationship as a factor in patient treatment adherence. This has important implications for social change because an understanding of which physician factors lead to treatment adherence may help improve patient outcomes, reduce T2DM complications, improve patient quality of life, and reduce healthcare costs.
185

Type 2 Diabetes Mellitus and Colorectal Cancer Risk and Survival in Oman

Mafiana, Rose Ngozi 01 January 2017 (has links)
Type 2 diabetes mellitus (T2DM) and colorectal cancer (CRC) are 2 chronic diseases with common risk factors related to physical inactivity, obesity, and diet. Literature on T2DM as a risk factor for CRC development and survival in Oman is scarce. Using de-identified archival data provided by Sultan Qaboos University Hospital (SQUH) Oman, a retrospective, case-control, and time-to-event study designs were used to compare odds of developing CRC, and survival rates among adults with and without T2DM. The ecosocial theory provided the theoretical base for this research. Logistic regression was used to examine the odds of developing CRC among 114 cases versus 170 hospital controls. The Cox proportional hazards regression was used to compare survival rates among 228 CRC cases by T2DM status and survival rates by T2DM status across strata of gender, age group, and tumor location and cancer stage. According to the study findings, after having adjusted for potential confounding variables, there was no association between T2DM and odds of developing CRC (OR = 1.49, 95% CI: 0.29-7.68, p = 0.64) or between T2DM and CRC survival rates (HR = 1.07, 95% CI: 0.65 -1.75, p = 0.80). There was also no association between T2DM and CRC survival rates across the strata of potential effect modifiers examined. This research could contribute to positive social change by creating awareness among policy makers that will provide them with information on CRC risk-reduction strategies in the Omani population.
186

The Effect of Referral Source on Patient Participation in Diabetes Education Programs

Gallivan, Karyn Marie 01 January 2017 (has links)
The goal of diabetes education programs (DEPs) is to improve patients' pattern-management habits for those with type 2 diabetes (T2D), though participation in DEPs is lower than expected due to low physician referral rates. This retrospective study examined secondary data of 162 T2D patients who had been referred to a DEP in a community center in RI to determine whether the source of referral affected patient attendance, participation persistence, and outcomes. Self-referred (n = 62) and physician-referred (n = 100) groups were analyzed for possible associations among the aforementioned variables. Chi-square (p = .04) and logistic regression (p = .04) indicated that the referral source for a DEP does have an effect on participation rates, while logistic regression showed that odds for self-referred patients to participate were 1.97 times higher. Multiple linear regression found no difference between the referral source and the number of sessions patients completed, though covariate analysis showed that age (p = .02) contributes to the model. Multiple linear regression showed no difference between the number of sessions attended and changes in hemoglobin A1c (HbA1c) levels. It is important to note that those who completed the program and reported pre- and post-program HbA1c levels (n = 7) all reported improved outcomes. This highlights the limitation of the small sample size (n = 7), which increased the possibility of a Type II error. This community center DEP model can serve as a blueprint, highlighting the importance of diabetes education and leading to positive social change by improving referral and participation rates and resulting in fewer complications, a decreased disease burden, and an improved quality of life.
187

Education Protocol for Type II Diabetes Mellitus

Quandt, Raegan Elizabeth 01 January 2018 (has links)
Diabetes mellitus is one of the leading causes of death in the United States, contributing to rising health care costs and increased morbidity and mortality rates. Researchers demonstrated that aggressive heath measures involving ongoing diabetes self-management education are paramount in minimizing associated complications of diabetes. The management and prevention of diabetes is not standardized and providers within a health clinic in Illinois reported challenges in providing self-management education during scheduled patient appointments due to limited resources and time. The purpose of this DNP project was to develop a clinical practice guideline to be used by all providers within the health care clinic for the management of Type 2 diabetes. The goal of the developed guideline was to optimize the time providers spend with patients diagnosed with diabetes and improve the consistency and quality of education and care. The health promotion model provided a guide for the development of the practice guideline. The method and design of this DNP project involved extensive research, literature review, evidence grading, and development of an evidence-based practice guideline for Type 2 diabetes management. A selected team of 3 diabetes experts appraised the developed guideline using the AGREE II instrument, and guideline usability was evaluated by 3 nurse practitioners within the medical clinic using a 10-item questionnaire. Results of the appraisal confirmed the high quality, feasibility, and usability of the developed guideline for diabetes self-management education and support. Improving the delivery of care can bring about positive social change by improving health outcomes in individuals with Type 2 diabetes and reducing morbidity and mortality rates.
188

The Influence of Family History of Type 2 Diabetes Mellitus on Positive Health Behavior Changes Among African Americans

Ard, Donny D 01 January 2019 (has links)
Type 2 diabetes mellitus (T2DM) is a disease that affects the body's ability to metabolize glucose effectively. The disease is predicted to be prevalent in over 300 million people by the year 2030. African Americans (AA) have the highest prevalence rates in the United States. Lifestyle modification and awareness of risk factors, including family history, are important aspects for prevention of developing T2DM. The purpose of this study was to understand if a family history of T2DM played an influential role in individuals making positive health behavior changes for T2DM prevention. The phenomenological study was grounded in the health belief model. Participants selected for this study were at least 18 years of age, self-identified as AA, self-reported a family history of T2DM, and were not diagnosed with the disease themselves. Transcriptions of 20 face-to-face interviews were stored and organized via a qualitative research software NVivo Version 12 for Mac and later analyzed for data outcome. Participants demonstrated a strong awareness of T2DM with an accurate definition of T2DM and explanation of signs, symptoms, and prevention. Participants recognized family history as a risk factor in only 55% of the responses. However, family history played a major role in prevention in the lives of the participants. The participants reflected on personal barriers to health behavior changes and were encouraged to incorporate better life choices in their own lives. This research offers communities, healthcare providers, and stakeholders a better understanding of the importance of family history as a risk factor to T2DM as programs are developed to mitigate health disparities in the AA community.
189

Cameroonian Immigrants ' Behaviors, Beliefs and Knowledge of Type 2 Diabetes: in Minnesota

Njee, Brendabell Ebanga 01 January 2019 (has links)
Nondiabetic immigrants from Cameroon who migrate to Minnesota lack knowledge of risk factors associated with type 2 diabetes and face challenges accessing health care services. Nondiabetic immigrants from Cameroon lack culturally appropriate health care services and therefore find it difficult to follow providers' recommendations. This phenomenological study explored the perceptions and experiences of nondiabetic immigrants from Cameroon regarding access to affordable, quality health care services as well as their behaviors, beliefs, and knowledge of type 2 diabetes self-management. Bronfenbrenner's social ecological model provided the theoretical framework. Research questions addressed access to affordable health care services, knowledge, and perception of type 2 diabetes, dietary and activity behaviors, and awareness of diabetes self-management. A purposive sample of 13 nondiabetic Cameroonian immigrants participated in the study. Data were collected through in-depth personal interviews. Interviews were hand-coded, and NVivo was used to identify emerging themes. A key finding for this study is that participants leave their appointments without adequate information and continue living in poor health because they lack understanding of medical recommendations. The participants expressed concerns that their health care providers did not address their psychosocial needs in conjunction with physical needs. They also expressed interest in learning about healthy eating. Participants prefer to learn how to count carbohydrates and nutritional values of traditional food to help manage portion size. The social change implications indicate further training for health care professionals in physical and emotional needs of immigrant population from Cameroon.
190

The Link Between Diet, Gut Microbiota And Type 2Diabetes/Pre-diabetes In Humans : - A systematic review

Hansson, Christine January 2019 (has links)
Introduction: Diabetes is a global and rapidly increasing disease that in 2014 affected morethan 422 million people, and takes 1,2 million lives per year. The importance of identifyingnew ways to manage and prevent the disease has led science to a new area – modulation ofthe gut microbiota. It is well known that the composition of gut microbiota differs betweennon-diabetic and diabetic adults, and that nutrition is the main way to modulate gutmicrobiota composition. Food and lifestyle are of great importance for the development andtreatment of type 2 diabetes and pre-diabetes, but less is known about whether gut microbiotamodulation is mediating that link. Aim: The aim is to examine whether there is a scientifically well-supported link between diet,gut microbiota and the development or treatment of type 2 diabetes or pre-diabetes in humans. Methods: Systematic review with literature search via PubMed and Cochrane, following themanual from the Swedish Agency for Health Technology Assessment and Assessment ofSocial Services (SBU). Results: Of 12 articles finally included, two studies found a strong impact of diet on diabetesrelatedvariables via modulation of gut microbiota. Another four studies did not find anassociation, and six studies lacked sufficient data to be able to draw a conclusion. Dietinterventions and study design differed between studies, which led to heterogeneous results. Conclusions: This review demonstrates a large knowledge gap in how dietary modificationscan prevent or treat type 2 diabetes or pre-diabetes via changes in gut microbiota.

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