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  • 한국과학기술정보연구원(KISTI) 서울분원 대회의실(별관 3층)
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  • P-ISSN 1010-0695
  • E-ISSN 2288-3339

Paeonia radix decreases intracerebral hemorrhage-induced neuronal cell death via suppression on caspase-3 expression in rats

대한한의학회지 / Journal of Korean Medicine, (P)1010-0695; (E)2288-3339
2004, v.25 no.4, pp.95-107
Ho-Jun Kim (Bundang CHA Hospital)
Sung-Soo Kim (Kyunghee Medical Center)
Jong-Soo Lee (Kyunghee Medical Center)
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Abstract

Objectives : The inappropriate or excessive apoptosis has been known to be associated with neurodegenerative disorders including intracranial hemorrhage(ICH). Paeoniae radix, in traditional Korean medicine, has played its role as blood-nourisher and yin-astringent. In the present study, the effect of Paeoniae radix on the inhibition of neurodegeneration in the brain of rats after artificial ICH and on the resulting apoptosis was investigated. Methods : 30 rats were divided into 6 equal groups ; the sham-operation group, the hemorrhage-induction group, the hemorrhage-induction with 10, 50, 100, and 200 mg/kg Paeoniae radix-treated group, respectively. Stereotactic surgery was performed and collagenase was infused to induce ICH in the region of CA1 of hippocampus of rats. The sham group took only saline infusion. For 7 days after the surgery, 4 testing groups had intraperitoneal injections of Paeoniae radix extract. The step-down inhibitory avoidance task, measurement of neurodegeneration degree in the CA1 region of the hippocampus, and detection of caspase-3 and newly generated cells in the dentate gyrus were done after animal sacrifice. Results : Rats receiving Paeoniae radix extract showed increased latency time in the inhibitory avoidance task. The extension of neuron-deprived areas in the CA1 region was significantly suppressed in the Paeonia treated groups. Also expressions of caspase-3 in the CA1 region and cortex were significantly inhibited in the Paeonia treated groups. The cell proliferation was evaluated by means of BrdU methods and proved to be decreased in the Paeonia treated groups. Conclusions : These results suggest that Paeoniae radix has potential to suppress short-term memory loss after devastating neurologic accidents. Also it was proved that Paeoniae radix has a neuroprotective effect and alleviates central nervous complications following intracerebral hemorrhage. Furthermore, it may imply that this medicinal plant can be widely used for vascular dementia and other neurodegenerative disorders.

keywords
Paeoniae radix, intracranial hemorrhage, stereotactic surgery, apoptosis, memory loss, neurodegeneration, Paeoniae radix, intracranial hemorrhage, stereotactic surgery, apoptosis, memory loss, neurodegeneration


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