- A licorice ethanolic extract with peroxisome proliferator-activated receptor-gamma ligand-binding activity affects diabetes in KK-Ay mice, abdominal obesity in diet-induced obese C57BL mice and hypertension in spontaneously hypertensive rats. Mae, T., Kishida, H., Nishiyama, T., Tsukagawa, M., Konishi, E., Kuroda, M., Mimaki, Y., Sashida, Y., Takahashi, K., Kawada, T., Nakagawa, K., Kitahara, M. J. Nutr. (2003)