1. Faculty of Pharmaceutical Sciences, Toho University, 2-2-1 Miyama, Funabashi, Chiba 274-8510, Japan, Department of Dental Pharmacology, Meikai University School of Dentistry, Sakado, Saitama 350-0283, Japan, Pengzhou Institute for Pharmaceutical Control, Pengzhou, Sichuan 611930, People's Republic of China, and School of Pharmacy, West China University of Medical Sciences, Chengdu, Sichuan 610041, People's Republic of China