Neuroprotective effects of kangen-karyu on spatial memory impairment in an 8-arm radial maze and neuronal death in the hippocampal ca1 region induced by repeated cerebral ischemia in rats

Fengling Pu, Kyoko Motohashi, Tomohiro Kaneko, Yurika Tanaka, Naomi Manome, Keiichi Irie, Jirou Takata, Nobuaki Egashira, Ryozo Oishi, Takuya Okamoto, Yasuo Sei, Takako Yokozawa, Kenichi Mishima, Katsunori Iwasaki, Michihiro Fujiwara

研究成果: Contribution to journalArticle査読

18 被引用数 (Scopus)

抄録

In the present study, we investigated the neuroprotective effects of Kangen-karyu (KGK) in a repeated cerebral ischemia model (2 x 10 min, 1-h interval). A 21-day pre- and post- ischemic treatment with KGK (10-300mg/kg) and aspirin (5mg/kg) improved the spatial memory impairment and neuronal death in the hippocampal CA1 region induced by repeated cerebral ischemia. However, a 7-day post-ischemic treatment with KGK did not attenuate the spatial memory impairment and neuronal death in this model. To determine the mechanism of action of KGK, we investigated the effects of a 14-day pre-ischemic treatment with KGK on cerebral blood flow in the hippocampal area of the repeated cerebral ischemia model using laser Doppler flowmetry. The 14-day pre-ischemic treatment with KGK increased the cerebral blood flow during reperfusion. These results suggest that a 21-day pre- and post-ischemic treatment with KGK can protect against brain damage caused by cerebral ischemia by increasing the cerebral blood flow in the hippocampal area.

本文言語英語
ページ(範囲)424-430
ページ数7
ジャーナルJournal of Pharmacological Sciences
109
3
DOI
出版ステータス出版済み - 2009

All Science Journal Classification (ASJC) codes

  • Molecular Medicine
  • Pharmacology

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