Journal of Physiology & Pathology in Korean Medicine (동의생리병리학회지)

The Physiological Society of Korean Medicine and The Society of Pathology in Korean Medicine (대한동의생리학회·한의병리학회)
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Comparative Study on the Inhibition Effect on Apoptosis in Neuro2A Cell on the Region of Zizania Latifolia(Radix, Rhizoma, Herba)

고장초의 부위별(뿌리, 줄기, 전초) Neuro2A 신경세포고사에 대한 억제 효과 비교 연구

  • Cha, Yun-Yeop (Department of Oriental Rehabilitation Medicine, College of Oriental Medicine, Sangji University)
  • 차윤엽 (상지대학교 한의과대학 한방재활의학과)
  • Published : 2006.08.25
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Abstract

To prevent human body injury from oxidative stress, antioxidants are very important and many research about antioxidants are generally being conducted. Hydrogen peroxide$(H_20_2)$ that is one of vitality oxygen species has been seen that cause various diseases, DNA damage and gene change. We have already known that the inhibition effect of Zizania latifolia Radix, Rhizoma on apoptosis induced by $H_2O_2$ in Neuro2A cell. And the purpose of this study was that we made a comparative study on the inhibition effect of apoptosis in Neuro2A cell on the region of Zizania latifolia(Radix, Rhizoma, Herba). Neuro2A cells were cultivated in RPMI(GibcoBRL) with 5% FBS and treated with $H_2O_2$ and Zizania latifolia(Radix, Rhizoma, Herba). Separately we measured the cell viability and analyzed DNA fragmentation. Activity of PARP, Cytochrome C, caspase-9, caspase-3, p53, p21, Bax and Bcl-2 in the cell was examined by using western blot. The results obtained were as Follows: The cell viability in all of Zizania latifolia (Radix, Rhizoma, Herba) treatment (60ug/m1<) decreased significantly compared with that of none treatment(p<0.001). Zizania latifolia Radix increased cell viability was most effective of three regions. But we had no significant difference among three regions. All of Zizania latifolia (Radix, Rhizoma, Herba) increased cell viability about twice as much as that being injury by $H_2O_2$,(Zizania Latifolia (Radix, nhizoma, Herba) 20ug/m1, $H_2O_2$ 200uM, p<0.001). DNA fragmentation developed by $H_2O_2$, but was not developed in all of Zizania latifolia (Radix, Rhizoma, Herba) treatment. PARP, Cytochrome C, caspase-9 and caspase-3 activated all by $H_2O_2$ but were not activated in all of Zizania latifolia (Radix, Rhizoma, Herba) treatment. P53, P2l and Bax activated by $H_2O_2$, and Bcl-2 got into inactivation. But the opposite results appeared in all of Zizania latifolia (Radix, Rhizoma, Herba) treatment. In conclusion, these results suggest that all of Zizania latifolia (Radix, Rhizoma, Herba) inhibit the development of DNA fragmentation and apoptosis by $H_2O_2$and the antioridant action of all of Zizania latifolia (Radix, Rhizoma, Herba) is effective.

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