A traditional medicinal herb Paeonia suffruticosa and its active constituent 1,2,3,4,6-penta-O-galloyl-β-d-glucopyranose have potent anti-aggregation effects on Alzheimer's amyloid β proteins in vitro and in vivo

Hironori Fujiwara, Masahiro Tabuchi, Takuji Yamaguchi, Koh Iwasaki, Katsutoshi Furukawa, Kyoji Sekiguchi, Yasushi Ikarashi, Yukitsuka Kudo, Makoto Higuchi, Takaomi C. Saido, Sumihiro Maeda, Akihiko Takashima, Masahiko Hara, Nobuo Yaegashi, Yoshio Kase, Hiroyuki Arai