[1] Univ Tokyo, Grad Sch Med, Dept Internal Med, Bunkyo Ku, Tokyo 1138655, Japan
[2] Meiji Pharmaceut Univ, Dept Biochem, Tokyo, Japan
[3] Tokyo Med Univ, Anim Res Ctr, Div Lab Anim Sci, Tokyo, Japan
[4] Natl Inst Hlth & Nutr, Div Clin Nutr, Tokyo 162, Japan
[5] Univ Tokyo, Dept Pathol, Grad Sch Med, Tokyo, Japan
[6] Univ Tokyo, Inst Mol & Cellular Biosci, Tokyo, Japan
[7] Asahi Life Fdn, Inst Diabet Care & Res, Tokyo, Japan
[8] Inst Med Mol Design, Tokyo, Japan
[9] Univ Tokyo, Grad Sch Pharmaceut Sci, Tokyo, Japan