Date of Award

2008

Degree Type

Thesis

Degree Name

Master of Science

Program

Physiology

Supervisor

Dr. David Hill

Second Advisor

Dr. Edith Arany

Abstract

In order to investigate the role of statins in beta (β)-cell regeneration, we used a model of streptozotocin (STZ)-induced β-cell injury, and attempted to affect neovascularization using atorvastatin (AT), in order to aid in β-cell recovery. The recruitment of EPCs, which readily home to sites of injury, would contribute to new blood vessel formation and deliver appropriate signals for β-cell regeneration. We hypothesized that the rate and capacity of the β-cell growth and regenerative processes would increase with AT. β-cell mass was expanded by postnatal day (PD) 44 and we observed a better glucose tolerance in STZ animals treated with 20 mg/kg AT. This treatment appeared to affect the neogenesis of islets and caused an increase in the number of endothelial cells (ECs). Our findings suggest a novel effect of statins and will help further elucidate the mechanisms of β-cell regeneration.

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