NEW YORK, Jan. 21, 2009 – Researchers from Joslin Diabetes Center, Boston, and ActiveSite Pharmaceuticals, Inc., San Francisco, announced today that they have demonstrated that a specific inhibitor of the protease plasma kallikrein, ASP-440, developed by ActiveSite Pharmaceuticals, may provide a new therapeutic approach for treatment of diabetic retinopathy, the most common eye-related complication of diabetes. The study, which was partly funded by the Juvenile Diabetes Research Foundation (JDRF), is published in the February 2009 issue of the journal Hypertension.