Title page for ETD etd-08222012-020303

Type of Document Master's Thesis
Author Fu, Yu
URN etd-08222012-020303
Title Baicalein, a novel anti-diabetic compound
Degree Master of Science
Department Human Nutrition, Foods, and Exercise
Advisory Committee
Advisor Name Title
Liu, Dongmin Committee Chair
Barbeau, William E. Committee Member
Hulver, Matthew W. Committee Member
Li, Liwu Committee Member
  • blood glucose
  • insulin
  • diabetes
  • baicalein
  • pancreatic β-cell
Date of Defense 2012-08-08
Availability unrestricted
Both in type 1 (T1D) and type 2 diabetes (T2D), the deterioration of glycemic control over time is primarily caused by an inadequate mass and progressive dysfunction of β-cells, leading to the impaired insulin secretion. Thus, the search for agents to protect b-cell and enhance its function is important for diabetes treatment. Studies have reported that baicalein, a flavone originally isolated from the roots of Chinese herb Scutellaria baicalensis, has various claimed beneficial effects on health, such as anti-oxidant, anti-viral, anti-thrombotic, and anti-inflammatory effects. However, it is unclear whether it exerts an anti-diabetic action. Here, we present evidence that baicalein may be a novel anti-diabetic agent. Specifically, dietary intake of baicalein significantly improved hyperglycemia, glucose tolerance, and blood insulin levels in high-fat diet (HFD)-fed middle-aged diabetic mice, which was associated with the improved islet -cell survival and mass. Baicalein treatment had no effect on food intake, body weight gain, circulating lipid profile, and insulin sensitivity in HFD-fed mice. In in-vitro studies, baicalein significantly augmented glucose-stimulated insulin secretion in insulin-secreting cells (INS1) and promotes viability of INS1 cells and human islets. These results demonstrate that baicalein may be a naturally occurring anti-diabetic agent by directly modulating pancreatic β-cell function.
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