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Protective Mechanism of Flavonoids Isolated from Rhus Vernicifiua on the Paraquat Toxicity Reducing Agent and its Inhibition Mechanism

옻나무 목부로부터 분리한 Favonoids가 Paraquat 독성의 경감기전 검색

  • Published : 2003.12.01

Abstract

In this study, we investigated to elevate the modulatory effect of flavonoid(fustin, sulfuretin, 10 mg/kg) which was isolated from Rhus verniciflua Stokes(RVS) in male Sprague-Dawley rats for 2 weeks on the toxicity of paraquat. In the flavonoids pretreated groups, glutamic oxaloacetic transaminase, glutamic pyruvic transaminase, blood urea nitrogen, creatinine, malondialdehyde and alkaline phosphatase activity in serum and malondialdehyde, alkaline phosphatase activity and collagen in lung tissue which was induced paraquat toxicity were slightly decrease compared to the normal group. In the lung tissue of flavonoids pretreated groups, malodialdehyde value, G-6-phosphatase activity and collagen synthesis were recovered to tile normal values and alkaline phosphatase activity was increased. From these results, we concluded that flavonoids which were isolated from RVS is an effective agent to inhibit the pulmonary and internal toxicities and hence we concluded that acitive components of fustin and sulfuretin which were isolated from RVS might be removed free radicals induced by paraquat.

옻나무(Rhus verniciflua Stokes)로부터 제초제인 paraquat(PQ)의 독성 경감기전을 추구할 목적으로 ethylacetate 분획에서 분리한 fustin 및 sulfuretin을 실험동물에 투여하고서 혈액학적 변화 및 간장 중 활성산소에 미치는 영향 검토한 결과 혈액 생화학적 인자 분석을 종합해 보면 옻나무의 메탄을 엑스(250 mg/kg), 에틸아세테이트 엑스(250 mg/kg), fustin(10 mg/kg) 및 sulfuretin(10 mg/kg)을 2주간 각각 경구투여 하고서 PQ를 투여하므로서 PQ의 독성이 유의성 있게 억제되었다. in vivo에서 옻나무의 분획 및 성분의 투여는 혈액생화학적 검사에서 PQ에 의해 유도된 간독성 지표인 s-GPT, s-GOT치, 신장독성지표인 BUN, creatinine치 및 조직손상의 지표인 ALP, MDA치를 억제하였다 폐조직중의 MDA함량, ALP활성 및 collagen함량도 억제하였다. 이로써 옻나무에는 PQ의 폐독성 및 각 장기의 독성을 효과적으로 경감시켜 줄 수 있는 물질이 함유되어 있는 것으로 사료된다.

Keywords

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