Yale University -- New Haven, Conn. — In research that could lead to new approaches for the treatment of type 2 diabetes, a Yale School of Medicine team has found that suppressing a liver enzyme that induces glucose production helped diminish the symptoms of the disease in a rat model — reducing blood glucose concentrations, decreasing rates of glucose production in the liver, and improving insulin sensitivity. Decreasing expression of the gene, Sirtuin 1, also lowered total cholesterol levels.