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Full-Text Articles in Life Sciences

Regulation Of Lipid Homeostasis, Inflammatory Signalling And Atherosclerosis By The Peroxisome Proliferator-Activated Receptor Delta, Lazar A. Bojic Jun 2013

Regulation Of Lipid Homeostasis, Inflammatory Signalling And Atherosclerosis By The Peroxisome Proliferator-Activated Receptor Delta, Lazar A. Bojic

Electronic Thesis and Dissertation Repository

The peroxisome proliferator-activated receptor (PPAR) δ is a ligand-dependent transcription factor that has been implicated in metabolic and inflammatory regulation. The molecular and physiological mechanisms by which PPARδ activation regulates lipid metabolism, inflammatory signaling and protection from atherosclerosis in states of metabolic disturbance such as insulin resistance and dyslipidemia, were investigated in a series of in vitro and in vivo studies. In vitro experiments demonstrated that PPARδ activation inhibits atherogenic lipoprotein-induced lipid accumulation and the associated proinflammatory responses. The primary mechanisms for these effects were increased fatty acid β-oxidation, decreased lipoprotein lipase (LPL) activity, reduced MAPK signaling and improved insulin ...


Local Macrophage Proliferation In Adipose Tissue Is A Characteristic Of Obesity-Associated Inflammation: A Dissertation, Shinya U. Amano Mar 2013

Local Macrophage Proliferation In Adipose Tissue Is A Characteristic Of Obesity-Associated Inflammation: A Dissertation, Shinya U. Amano

GSBS Dissertations and Theses

Obesity and diabetes are major public health problems facing the world today. Extending our understanding of adipose tissue biology, and how it changes in obesity, will hopefully better equip our society in dealing with the obesity epidemic. Macrophages and other immune cells accumulate in the adipose tissue in obesity and secrete cytokines that can promote insulin resistance. Adipose tissue macrophages (ATMs) are thought to originate from bone marrow-derived monocytes, which infiltrate the tissue from the circulation. Much work has been done to demonstrate that inhibition of monocyte recruitment to the adipose tissue can ameliorate insulin resistance. While monocytes can enter ...