Journal of Life Science (생명과학회지)

Korean Society of Life Science (한국생명과학회)
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Inhibition effect of neuronal death by Scutellaria baicalensis GEORGI Water-Extract in a Hypoxic Model of Cultured Rat Cortical Cells

흰쥐 대뇌세포의 저산소증 모델에서 황금(黃芩)에 의한 신경세포사 저해 효과

  • 김완식 (동국대학교 한의과대학 내과학교실) ;
  • 정승현 (동국대학교 한의과대학 내과학교실) ;
  • 신길조 (동국대학교 한의과대학 내과학교실) ;
  • 문일수 (동국대학교 의과대학 해부학교실) ;
  • 이원철 (동국대학교 한의과대학 내과학교실)
  • Published : 2007.01.29
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Abstract

Scutellaria baicalensis GEORGI(SB) is used in oriental medicine for the treatment of incipient strokes. Although it has been reported that SB is neuroprotective in a hypoxia model, its mechanism is poorly understood. Here, we investigated the effect of SB on the modulation of retinoic acid receptor a (RARa). Rat cerebrocortical cells were grown in neurobasal medium. On DIV12 cells were treated with SB $(20{\mu}g/ml)$ and given a hypoxic shock $(2%\;O_2/5%\;CO_2,\;3hr)$ on DIV14. In situ hybridization using cRNA probe revealed that RARa mRNA punctae are distributed, in addition to nucleus, throughout neuronal dendrites, where SB upregulated its density by 69.8% (p=0.001) and 129.8% (p=0.001) in both normoxia and hypoxia, respectively. At the protein level, SB upregulated RARa in the neuronal soma by 78.8% (p=0.004) and 23.6% (p=0.001) in both normoxia and hypoxia, respectively. These results indicate that SB upregulates RARa in both normoxia and hypoxia, which might contribute to the neuroprotection.

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References

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