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Polychlorinated Biphenyl Ligands Of The Aryl Hydrocarbon Receptor Promote Adipocyte-Mediated Diabetes, Nicki A. Baker
Polychlorinated Biphenyl Ligands Of The Aryl Hydrocarbon Receptor Promote Adipocyte-Mediated Diabetes, Nicki A. Baker
Theses and Dissertations--Nutritional Sciences
Numerous epidemiology studies suggest a correlation between exposures to polychlorinated biphenyls (PCBs) and the development and severity of type 2 diabetes (T2D); however, mechanisms remain largely unknown. Previous studies demonstrated that PCBs that are ligands of the aryl hydrocarbon receptor (AhR) promote the expression of proinflammatory cytokines, including tumor necrosis factor-α (TNF-α), that are linked to insulin resistance in adipocytes. To explore potential mechanisms linking PCB exposures to diabetes, we developed a mouse model of glucose and insulin intolerance induced by acute and chronic exposures to PCB-77. We hypothesized that PCB ligands of AhR result in adipocyte-specific elevations in TNF-α …
Diet, Bacteria And Inflammation: The Intestinal Mucosa And Metabolic Syndrome, Nadeem K. Mohammed
Diet, Bacteria And Inflammation: The Intestinal Mucosa And Metabolic Syndrome, Nadeem K. Mohammed
Theses and Dissertations--Nutritional Sciences
Long term consumption of a high fat diet (HFD) increases the risk of developing Metabolic Syndrome and type 2 diabetes. This led us to hypothesize that long term HFD consumption impairs immune tolerance to the intestinal bacteria. Our studies had two goals. First, we characterized the effect of long term HFD consumption on the systemic immune response by comparing C57BL6 mice fed a HFD and low fat diet (LFD). Plasma immunoglobulin G (IgG) against Escherichia coli (LF-82), E. coli (Nissle 1917), Bacteroides thetaiotaomicron and Lactobacillus acidophilus were measured by a lab-developed ELISA. Fasting blood glucose and inflammation were measured in …