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Effects of Araliaceae on Lipid Levels of Plasma and Liver in Streptozotocin Induced Diabetic Rats

두릅나무과 식물이 Streptozotocin으로 유발한 당뇨 흰쥐의 혈장과 간조직 중의 지질농도에 미치는 영향

  • Published : 2006.09.01

Abstract

This study was conducted to investigate the effects of Araliaceae water extracts on lipid concentrations in streptozotocin(STZ)-induced diabetic rats. The Male Wistar rats were divided into normal and diabetic group. The diabetic group was futher subdivided into the control group(DM) and the Araliaceae water extracts supplemented group: Aralia elata(AE), Acanthopanacis cortex(AC) and Ulmus davidiana(UD). The extracts were supplemented with 1.14% of raw Araliaceae/kg diet for 7 weeks. Diabetes was induced by injecting STZ(55 mg/kg B.W., i.p.) once 2 weeks before sacrifying. The net weight gain and feed efficiency ratio were significantly lower in the STZ-induced diabetic group than in the normal group. However, all of the Araliaceae water extracts supplemented groups resulted in an increase of body weight compared to the DM group. The triglyceride, total cholesterol and free cholesterol concentrations in plasma and liver were significantly higher in the DM group than in the normal group. However, the supplementation of Araliaceae water extracts increased plasma HDL cholesterol concentration, while decreased plasma VLDL, LDL-cholesterol concentra-tions in Araliaceae water extracts supplemented group.

두릅나무과 식물이 당뇨를 유발한 흰쥐의 지질농도 변화에 미치는 영향을 구명하기 위하여 두릅, 오가피, 느릅의 열수추출물(11.42 g raw araliaceae/kg diet)을 급여한 후 streptozotocin(55 mg/kg B.W.)을 1회 복강주사하여 7주간 사육하였다. STZ 투여로 식이섭취량은 증가된 반면 체중은 감소되었는데 두릅, 오가피 및 느릅의 열수추출물 급여시 체중증가량의 변화는 관찰되지 않은 반면 식이섭취량은 억제되었다. 식이효율은 실험식이 중 오가피 열수추출물이 당뇨로 인한 다식증 개선에 효과적이었다. 혈장과 간조직 중의 중성지질, 총콜레스테롤 및 유리콜레스테롤 함량은 당뇨대조군이 정상군에 비하여 유의적으로 증가되었으나 실험식이 급여시 모든 군에서 정상수준으로 회복되었다. 당뇨로 인해 감소된 HDL-콜레스테롤 함량이 두릅나무과 식물 급여시 회복됨으로써 당뇨로 인한 지질대사 이상을 완화시키는데 이들 열수추출물이 효과적일 것으로 생각된다.

Keywords

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