Journal of Oriental Neuropsychiatry (동의신경정신과학회지)

The Korean Society of Oriental Neuropsychiatry (대한한방신경정신과학회)
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Effects of Water-Extracts of Bambusae concretio silicae(BCS, 天竺黃) on the Expression of Neurotransmitter Receptors

천죽황(Bambusae concretio silicae, 天竺黃) 물추출물이 신경전달물질 수용체의 표현에 미치는 영향

  • Yoon, Jae-Hong (Graduate School of Oriental Medicine, Dong-Guk University) ;
  • Kim, Kyung-Min (Graduate School of Oriental Medicine, Dong-Guk University) ;
  • Kim, Kyung-Hun (Graduate School of Oriental Medicine, Dong-Guk University) ;
  • Shin, Gil-Cho (Graduate School of Oriental Medicine, Dong-Guk University) ;
  • Jeong, Seung-Hyun (Graduate School of Oriental Medicine, Dong-Guk University)
  • 윤재홍 (동국대학교 한의과대학 대학원) ;
  • 김경민 (동국대학교 한의과대학 대학원) ;
  • 김경훈 (동국대학교 한의과대학 대학원) ;
  • 신길조 (동국대학교 한의과대학 대학원) ;
  • 정승현 (동국대학교 한의과대학 대학원)
  • Received : 2011.06.04
  • Accepted : 2011.06.13
  • Published : 2011.06.30
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Abstract

Objectives : BCS(Bambusae concretio silicae) is used as a traditional medicine in Korea for the incipient stroke. Recent reports indicated that BCS has a neuroprotective effect by anti-convulsion effect. However, it's mechanism is not well studied. The purpose of this study was to investigate into the molecular mechanism of BCS for neuroprotection in normoxia of cultured rat hippocampal neurons. Methods : BCS (1.0, 2.5, 5.0, and $10.0\;{\mu}g/m{\ell}$) was added to culture media (Neurobasal supplemented with B27) on DIV 0, given a normoxia, and the cell viability was measured by typical phase-contrast images of the cultures with 1.0, 2.5, 5.0, and $10.0\;{\mu}g/m{\ell}$ on DIV 21. Effects of BCS on the expression of various synaptic proteins ($GABA_B$ R1, $GABA_B$ R2, GlyR, PSD95) were observed by immunocytochemistry showing on DIV 3, 7 and 21. Results : Typical phase-contrast images of the cultures indicated that BCS has a protective effect of rat hippocampal cells in normoxia. The BCS upregulated $GABA_B$ R1 after normoxia on DIV 7, $GABA_A$ ${\beta}2/3$ on DIV 21 and $GABA_B$ R2 on DIV 21. And the BCS downregulated PSD95 after normoxia on DIV 7. Conclusions : The present study showed evidence for the efficacy of BCS in Typical phase-contrast images, upregulation of inhibitory neurotransmitter receptors($GABA_B$ R1) and downregulation of PSD95 which eventually protected neuronal cell death in normoxia.

Keywords

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