1. Department of Pharmacology, School of Medicine and Institute of Health Sciences, Department of Orthopedic Surgery, School of Medicine, Department of Agronomy, Research Institute of Life Science, and Department of Chemistry, Research Institute of Life Science, Gyeongsang National University, Jinju, 660-751, Republic of Korea, and Department of Pharmacology, School of Medicine, Busan National University, Busan, 602-739, Republic of Korea