Journal of Nutrition and Health

The Korean Nutrition Society (한국영양학회)
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Effects of Benincasa hispida Fractions on Hepatic Lipid Levels and Lipid Peroxidation in Streptozotocin Induced Diabetic Rats

동과 (Benincasa hispida) 분획물의 투여가 Streptozotocin 유발 당뇨 흰쥐의 간장 지질수준 및 지질과산화에 미치는 영향

  • Lim, Sook-Ja (Department of Foods & Nutrition, College of Natural Sciences, Duksung Women's University) ;
  • Lee, Min-Hwan (Department of Foods & Nutrition, College of Natural Sciences, Duksung Women's University)
  • 임숙자 (덕성여자대학교 자연과학대학 식품영양학과) ;
  • 이민환 (덕성여자대학교 자연과학대학 식품영양학과)
  • Published : 2006.09.01
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Abstract

The effects of fractions of ethanol extract of Benincasa hispida (wax gourd) on lipid levels and lipid peroxidation in streptozotocin (STZ) induced diabetic rats were examined. Sprague-Dawley rats were induced diabetes mellitus by STZ injection (45 mg/kg) into the tail vein and were divided into 5 groups: normal, STZ-control, three experimental diabetic groups [chloroform $(CHCl_3)$ fraction group, butanol (BuOH) fraction group, and water fraction group]. Fractions of ethanol extract of Benincasa hispida were administered orally into the diabetic rats for 14 days. The liver glycogen levels of $CHCl_3$ fraction group and the muscle glycogen levels of BuOH and water fraction groups were significantly higher than that of STZ-control group. Pancreas protein levels of BuOH and water fraction groups were significantly higher than that of STZ-control group. The liver cholesterol level of BuOH and water fraction groups were significantly lower when compared with the STZ-control group. The level of liver triglyceride in BuOH and water fraction groups were significantly higher than that of STZ-control group. Malondialdehyde (MDA) levels in liver of normal and diabetic groups were not significantly different. In the pancreas, the MDA levels of BuOH and water fraction group were significantly lower than that of STZ-control group. The results suggested that the supplementation of the BuOH and water fractions of Benincasa hispida extract could be beneficial for the diabetic complications and damages from the lipid peroxidation.

한국산 식용 및 야생식물의 항당뇨 효능에 대한 연구의 일환으로 본 연구에서는 동과의 ethanol 추출물을 계통분획하여 streptozotocin으로 당뇨를 유발시킨 흰쥐에게 14일간 경구투여한 후 조직의 글리코겐 함량, 단백질 함량, 지질함량 및 지질과산화에 미치는 영향을 비교 분석하여 다음과 같은 결과를 얻었다. 장기무게를 체중 100 g당 환산하였을 때 당뇨쥐의 간장, 신장 및 폐의 무게가 정상쥐에 비해 증가함을 확인할 수 있었고 췌장의 무게는 $CHCl_3$ 분획물 투여군이 당뇨대조군에 비해 유의적으로 높은 수치를 보였다. 간장의 글리코겐 함량은 정상군에 비해 모든 당뇨유발군에서 유의적으로 낮은 함량을 나타냈으며 $CHCl_3$ 분획물 투여군에서 증가되었으나 유의적인 차이는 보이지 않았다. 근육의 글리코겐 함량은 BuOH 분획물 투여군과 water 분획물 투여군에서 당뇨대조군에 비해 유의적으로 높은 함량을 나타내었다. 간장과 신장의 단백질 함량은 정상군과 모든 당뇨유발군 사이에 유의적인 차이를 보이지 않았고, 폐의 단백질 함량은 $CHCl_3$ 분획물 투여군을 제외한 모든 당뇨실험군이 당뇨대조군에 비해 낮은 수준을 나타내었다. 췌장의 단백질 함량은 BuOH 분획물 투여군과 water 분획물 투여군이 당뇨대조군보다도 유의적으로 높게 나타났다. 간장 콜레스테롤 함량은 당뇨대조군에 비해 BuOH 분획물 투여군과 water 분획물 투여군에서 유의적으로 낮은 수준을 보였고, 간장의 중성지방 함량은 당뇨대조군에 비해 BuOH 분획물 투여군과 water 분획물 투여군 유의적으로 높게 나타났다. 간장과 폐의 malondialdehyde (MDA) 힘량은 모든 당뇨유발군에서 높게 나타났으며 신장에서는 BuOH 분획물 투여군과 water 분획물 투여군에서 높게 나타났다. 췌장의 MDA함량은 BuOH 분획물 투여군과 water 분획물 투여군이 정상군보다도 낮은 수준이었다. 이상의 연구결과 STZ 유발 당뇨 흰쥐에게 동과의 BuOH 분획물과 water 분획물을 투여하였을 때 근육의 글리코겐 함량 증가, 간장의 콜레스테롤 감소 및 췌장의 지질과산화 억제에 효과가 있었으나 간장과 신장의 지질과산화를 감소시키는 효과는 없는 것으로 나타났다.

Keywords

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