1. Department of Pharmacology, School of Pharmaceutical Sciences, Ohu University, 31-1 Tomitamachi, Koriyama, Fukushima 963-8611, Japan
2. Faculty of Pharmaceutical Sciences, Nihon Pharmaceutical University, 10281 Inamachi, Kita-adachigun, Saitama 362-0806, Japan
3. Department of Pharmacology, Showa Pharmaceutical University, 3-3165 Higashitamagawagakuen, Machida, Tokyo 194-0042, Japan
4. Department of Medicinal Pharmacology, Showa Pharmaceutical University, 3-3165 Higashitamagawagakuen, Machida, Tokyo 194-0042, Japan