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Antidiabetic effect of ethanol extract on Codonopsis lanceolata root in streptozotocin induced diabetic rats

더덕 뿌리 에탄올 추출물이 streptozotocin으로 유발된 흰쥐의 항 당뇨효과

  • Kim, Ok-Kyung (Department of Food Science and Nutrition, Dae Jin University)
  • 김옥경 (대진대학교 자연과학대학 식품영양학과)
  • Received : 2016.05.09
  • Accepted : 2016.06.08
  • Published : 2016.06.30

Abstract

This study was done to investigate the antidiabetic effect of ethanol extract from Codonopsis lanceolata root in Streptozotocin (STZ)-induced diabetic rats. Diabetes was induced by intravenous injection of STZ at a dose 45mg/kg.b.w. dissolved in citrate buffer(pH4.5). The ethanol extract of Codonopsis lanceolata root was orally administrated once a day for 7 days. The contents of serum glucose, triglyceride(TG) and total cholesterol were significantly decreased(p<0.05) in Codonopsis lanceolata root treated group compared to the those of STZ-control group. Also the content of hepatic glycogen and activities of glucose-phosphate dehydrogenase(G-6-PDH) and glucokinase(GK) were significamtly increased(p<0.05). These results indicated that ethanol extract of Codonopsis lanceolata root would have antidiabetic effect in STZ-induced diabetic rats.

Streptozotocin(STZ)을 45mg/kg.b.w의 용량으로 흰쥐의 미정맥에 투여한 후 유발된 당뇨 흰쥐에게 1일 1회 7일간 1,000mg/kg의 용량으로 투여 후 glucose 함량과 당대사에 관여하는 효소인 glucose-6-phosphatase(G-6-Pase), glucose-6-phosphate dehydrogenase(G-6-PDH), glucokinase(GK) 활성과 glycogen 함량, triglyceride(TG), total cholesterol등의 지질대사에 관여하는 물질들을 측정한 결과 더덕 뿌리 에탄올 추출물 투여군이 glucose, TG, total cholesterol등의 함량과 G-6-Pase 활성의 유의적인 감소(p<0.05)를 나타내었으며 glycogen 함량과 G-6-PDH, GK의 활성이 유의적인 증가(p<0.05)를 나타내었다. 이와 같이 더덕뿌리 에탄올 추출물이 항당뇨 개선효과를 갖는 유효성분을 함유하고 있음을 알 수 있었다.

Keywords

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