N-cadherin expressing HUVEC endothelial cells were grown to confluence in transwell plates and tested for changes in permeability in response to ADH-1 or VEGF. In the presence and absence of serum and GF, pretreatment of endothelial cells (HUVEC) with ADH-1 nearly doubled their permeability to a 40kDa FITC-conjugated dextran compared to saline controls. This increase in permeability in response to ADH-1 even exceeded the effects of VEGF, used as a positive control for changes in endothelial cell permeability. N-cadherin expression, normalized to GAPDH, in HUVEC cells is shown with respect to N-cadherin expression in the melanoma cell line DM366, a high N-cadherin expressing melanoma cell line.