Journal of Nutrition and Health

  • 제35권1호
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  • Pages.24-29
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  • 2002
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  • 2288-3886(pISSN)
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  • 2288-3959(eISSN)
한국영양학회 (The Korean Nutrition Society)
권호 표지

녹차 건분이 급성 알코올 투여받은 9개월령 흰쥐의 뇌 부위별 항산화능에 미치는 영향

Antioxidative Effects of Green Tea Powder Diet Against Ethanol-Induced Oxidative Damage in 9 Month Old Rat Brain Regions

  • 류선미 (이화여자대학교 가정과학대학 식품영양학과) ;
  • 장남수 (이화여자대학교 가정과학대학 식품영양학과)
  • 발행 : 2002.01.01
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초록

본 연구에서는 녹차 건분 식이가 뇌 조직에서 알코올에 의한 산화적 스트레스 감소효과를 나타내는 지를 규명하고 자, 생후 9개월령 Sprague-Dawley에게 1% 녹차 건분식이를 4주간 공급하고 희생 12시간 전메 급성으로 알코올을 투여한 후 뇌 조직을 cortex, cerebellum, striatum, hippocampus로 나누어 malondialdehyde(MDA)의 함량과 catalase. superoxide dismutase(SOD), glutathione peroxidase(GSH-Px)의 활성을 측정하였다. 본 실험 결과를 종합하여 볼 때. 1%녹차 건분 식이의 공급은 striatum과 hippocampus 내 MDA 함량을 유의적으로 낮추고 알코올에 따른 hippocampus 내 catalase 활성 증가를 유의적으로 억제하였다. 이러한 곁과는 녹차 건분의 공급이 알코올로 산화적 stress를 가한 동물에서 일부 뇌 조직의 지질 산화를 감소시키고 알코올에 의한 뇌 조직 손상으로부터 보호할 수 있음을 보여준다.

Present study investigates the protective effects of green tea against acute ethanol administration on lipid peroxidation and antioxidant system in various regions of rat brain ; cortex, cerebellum, striatum and hippofampus. The following parameters were examined : malondialdehyde(MDA) concentrations and activities of superoxide dismutase(SOD), catalase and glutathione peroxidase(GSH-Px). Male Sprague-Dawley rats of 9 month old were given control diets or those containing 1% green tea powder for 4 weeks, and at tole end of feeding each diet group was received acute ethanol(5g/kg body weight) or equicaloric sucrose solution administration. Results indicated that green tea powder significantly decreased malondialdehyde(MDA) levels in the striatum(81.85nmol/g tissue) and hippocampus(71.68nmol/g tissue), compared to control group(145.68nmol/g tissue in the striatum, 119.04nmol/g tissue in the hippocampus). Also, a significant decrease was observed in the striatum of green tea-ethanol treated group compared to control group. Green tea significantly blocked an ethanol-induced catalase activation in the hippocampus, which means an ethanol administration drew a significant increase only in control diet groups. In conclusion, these results suggest that moderate consumption of green tea leaves ctrl have protective effects against ethanol induced oxidative stress on various regions of rat brain, by significantly reducing MDA concentrations in the striatum and hippocampus and inhibiting ethanol induced catalase activation in the hippocampus.

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