Medicine and Health Sciences Commons^™

Gpr75 Deficiency Attenuates High Fat Diet-Driven Obesity And Glucose Intolerance, Sakib Hossain

NYMC Student Theses and Dissertations

Recently, a collaboration between Regeneron Pharmaceuticals and the Schwartzman-Garcia labs at New York Medical College published an exome sequencing study of individuals across the United Kingdom, United States, and Mexico which concluded that individuals possessing non-functioning, truncated mutations to the orphan g protein coupled receptor (GPCR), GPR75, had lower BMI and 54% reduced likelihood of obesity. The present study was undertaken to fully characterize the metabolic phenotype of Gpr75 deficient mice when fed a high fat diet (HFD) and explore potential mechanisms by which GPR75 activation links to increased adiposity and decreased glucose tolerance. After 14 weeks of HFD-feeding we …

Examining The Oxidative Stress Effects In Rats Exposed To 2-Aminoanthracene In Utero And High Fat Diet Three Months After, Brianna A. Lanoix

Honors College Theses

Polycyclic aromatic hydrocarbons are organic compounds that are created synthetically or found in partially burned oil, gasoline, and coal. 2-aminoanthracene (2AA) is a common example of a PAH and can affect lipid and carbohydrate metabolism and resulting in inflammatory problems and oxidative stress. The objective of the research project is to investigate oxidative stress in relation to diabetes in rats exposed to 2AA in utero and a high fat diet later in life. Pregnant dams were separated into treatment groups based on their dosages of 2AA; 0 mg/kg (control), 50 mg/kg (low), 100 mg/kg (high). During the gestation -postpartum period, …

Analysis Of Hba1c, Medication Compliance, Income Subsidies, And Comorbidity In Medicare Type 2 Diabetics, Robert E. Lazarchik

Walden Dissertations and Doctoral Studies

Diabetes is one of America’s leading chronic diseases with comorbidities contributing to lower health statuses and increased health care costs. While it is known that lowering HbA1c reduces the deleterious effects of diabetes, the capability to identify people with diabetes at risk for uncontrolled HbA1c levels or developing comorbidities based on the compliance rates for different oral antihyperglycemic medication classes (OAMCs) and financial assistance programs does not yet exist. These quantitative longitudinal retrospective studies examined the association between medication compliance, using Proportion of Days Covered (PDC), by OAMC and Medicare financial aid programs, on predicting HbA1c levels and comorbidities in …

Redox Signaling In The Zebrafish Embryo And Implications For Endocrine Pancreas Morphogenesis, Archit Rastogi

Doctoral Dissertations

The glutathione (GSH) system evolved to combat oxygen toxicity in nearly all living organisms, and serves as the predominant cellular redox buffer in vertebrates. This dissertation explores the roles of GSH during embryogenesis using the zebrafish (Danio rerio). The first agnostic in vivo characterization of GSH utilization in the embryo revealed strict spatiotemporal GSH profiles in developing organ systems. Interruption of these GSH profiles by exogenous xenobiotics led to organ specific adverse developmental outcomes; pancreatic β-cells were found to be especially susceptible and developed atypical morphologies following redox active xenobiotic exposures. Pancreatic β-cells lacked expression of Nrf2a (Nuclear …

Isolation And Characterization Of Natural Alpha-Glucosidase Inhibitors From Antioxidant Rich Red Wine Grapes (Vitis Vinifera), Hoda Chaouki Kadouh

Wayne State University Dissertations

Background: Diabetes is currently a global public health problem affecting people at all ages. Dietary antioxidants have been associated with a reduced risk of type 2 diabetes. Grape pomace contains considerable amounts of polyphenols and it has been reported to exhibit an inhibitory activity against alpha- glucosidases. Alpha-glucosidases, in turn, play a major role in controlling starch digestion and therefore postprandial blood glucose, a target for diabetes management.

Objective: This study aims to investigate the anti-diabetes potential of a selection of six grape pomaces and prepare and purify active components in the active variety that specifically inhibit intestinal alpha-glucosidases. The …

Sleep Duration And Diabetes In An Adult Population Of Rural Upstate New York, Tarak Shrestha

Legacy Theses & Dissertations (2009 - 2024)

Introduction: Within the past five decades, there has been a rapid increase in the number of diabetic cases in the US. The number of diabetic cases increased from 1.5 million in 1959 to 25.8 million in 2011. Around the same time period, the average sleep duration per night decreased from 8 hours to 6.9 hours.

Linking Environmental Toxicant Exposure To Diabetes Susceptibility, Jannifer Beth Tyrrell

Wayne State University Dissertations

An important and unresolved question in the environmental health field is whether exposure to common environmental toxicants, such as dioxin and heavy metals like Pb, increase the risk of developing diabetes, especially in combination with other common metabolic stressors such as obesity.

Previous studies suggested that dioxin exposure increased peripheral insulin resistance but did not appear to cause fasting hyperglycemia or elevated hepatic glucose output. In concordance with those findings we observed that dioxin treatment caused a strong suppression of the expression of the key hepatic gluconeogenic genes PEPCK and G6Pase. However, this suppression was not solely mediated by the …