Administration of chinpi, a component of the herbal medicine ninjin-youei-to, reverses age-induced demyelination

Hiroaki Asou, Nanako Sato, Chika Seiwa, Michihiro Uruse, Masahiro Yamamoto, Kayoko Tanaka, Takuya Kawakita, Yasuhiro Komatsu, Akio Yasukawa, Masakatsu Takao, Chiaki Kudo, Atsuhiko Hasegawa, Atushi Ishige, Kenji Watanabe

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


The disruption of myelin causes severe neurological diseases. An understanding of the mechanism of myelination and remyelination is essential for the development of therapeutic strategies for demyelination diseases. Our previous findings indicated that the FcR/Fyn cascade is a potential therapeutic target for remyelination caused by the Chinese/Japanese traditional herbal (Kampo) medicine ninjin youeito (Ninjin-youei-to, NYT), which is a hot-water extract made from 12 medicinal herbs. To identify which constituents of NYT are involved in the reversal of demyelination and to examine the potential therapeutic effect, we tested several of the chemical constituents of NYT. Here, we report that Chinpi, a constituent of NYT, upregulates the FcRγ/Fyn signaling cascade resulting in a potentially therapeutic effect against age-induced demyelination. In addition, we observed that phosphorylated (activated) FcRγ/Fyn upregulated the expression of the 21.5kDa isoform of myelin basic protein, inducing rapid morphological differentiation, when oligodendrocyte precursor cells (OPCs) were cultured in the presence of hesperidin and/or narirutin (the major active constituents of Chinpi). These results suggest that hesperidin and narirutin participate in the FcRγ/Fyn signaling pathway in OPCs causing these cells to differentiate into myelinating oligodendrocytes.

Original languageEnglish
Article number617438
JournalEvidence-based Complementary and Alternative Medicine
Publication statusPublished - 2011
Externally publishedYes

ASJC Scopus subject areas

  • Complementary and alternative medicine


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