1. Department of Physiology II, Kanazawa Medical University, Uchinada Ishikawa 920-0293, Japan
2. Department of Biomedical Sciences, College of Life Sciences, Ritsumeikan University, Kusatsu, Shiga, 525-8577, Japan
3. College of Pharmacology, Ritsumeikan University, Kusatsu, Shiga 525-8577, Japan