1. Department of Biochemistry, School of Pharmaceutical Sciences
2. Department of Functional Anatomy, School of Nursing, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
3. Department of Neurology, Mishima Hospital, 1713-8 Fujikawa, Niigata 940-2302, Japan
4. Department of Organic Chemistry, School of Pharmaceutical Sciences, Hiroshima International University, 5-1-1 Hirokoshinkai, Hiroshima 737-0112, Japan