1. Division of Medical Pharmacology, Department of Pharmacology, School of Medicine, Showa University, Tokyo 142-8555, Japan
2. Division of Neurology, Department of Internal Medicine, School of Medicine, Showa University, Tokyo 142-8555, Japan
3. Pharmacological Research Center, Showa University, Tokyo 142-8555, Japan
4. Department of Hospital Pharmaceutics, School of Pharmacy, Showa University, Tokyo 142-8555, Japan
5. Department of Oral Physiology, School of Dentistry, Showa University, Tokyo 142-8555, Japan
6. Department of Neurology, Kanazawa University Graduate School of Medical Sciences, Kanazawa University, Kanazawa 920-8640, Japan