The Effects of Lycii fructus and Lycii folium on the Liver in Ovariectomized Rat

구기자와 구기엽이 난소적출 흰쥐의 간에 미치는 영향

  • Published : 2008.12.31

Abstract

We aimed to investigate whether the extracts of Lycii fructus, Lycii folium, and estradiol can attenuate on the level of cholesterol on serum and ultrastructure alteration of hepatocytes isolated from ovariectomized rats. Experimental groups are divided into five: Sham (sham-operated), OVX (ovariectomized animal), LCF (OVX, Lycii fructus), LCL (OVX, Lycii folium), and $E_2$ (OVX, estradiol). The body weights of OVX group showed increase compared with Sham, LCF, and LCL groups. The levels of total cholesterol and low-density lipoprotein (LDL) cholesterol were significantly decreased in the LCF and LCL groups compared with those of OVX group. Moreover, the High-density lipoprotein (HDL) cholesterol level was increased in the LCL group. As the results of electron microscopical observation, lipid droplets in the OVX group showed increase compared with Sham group. But in the LCF group not showed lipid droplets. In conclusion, administration of Lycii fructus or Lycii folium lowers the serum cholesterol content of the ovariectomized rats and also the damage of the hepatocytes and formation of lipid droplets.

구기자와 구기엽이 난소를 적출한 흰쥐의 간에 미치는 영향을 규명하고자 체중, 혈청 콜레스테롤, 간세포의 미세구조 변화를 관찰하였다. 실험군은 가장수술군 (Sham), 난소적출군 (OVX), 난소적출 후 구기자 투여군(LCF)과 구기엽 투여군(LCL), 에스트로겐 투여군 ($E_2$)의 5개 군으로 분류하였다. 난소를 적출한 다음날부터 Sham군은 음용수로 물을 투여하였으며, LCF군과 LCL군은 음용수에 건조분말 100 mg/kg을 희석하여 매일 공급하였다. $E_2$군은 에스트로겐 0.01 mg/kg을 1일 1회 8주간 복강 주사하였다. 체중은 OVX군이 가장 높았으며, $E_2$군이 가장 낮았다. 총 cholesterol의 농도는 OVX군 ($105{\pm}4.2\;mg/dL$)이 Sham군 ($91{\pm}4.5\;mg/dL$)에 비하여 유의성 있게 증가하였으며, LCF군 ($86{\pm}3.9\;mg/dL$)과 LCL군 ($94{\pm}4.3\;mg/dL$)이 OVX군에 비해 낮게 나타났다. HDL cholesterol 함량은 OVX군 ($63.3{\pm}5.21\;mg/dL$)에 비하여 LCF군($64.9{\pm}4.04\;mg/dL$)과 LCL군($70.4{\pm}4.90\;mg/dL$)이 다소 높았으며, LDL cholesterol 농도는 OVX군 ($12.6{\pm}0.89\;mg/dL$)에 비하여 LCF군 ($8.8{\pm}0.45\;mg/dL$)과 LCL군 ($9.7{\pm}0.52\;mg/dL$)이 낮았다. 간세포의 미세구조를 전자현미경으로 관찰한 결과 OVX군에서는세포질에서 다양한 크기의 지방적들이 다수 관찰되었으나 LCF군에서는 지방적들이 거의 관찰되지 않았으며, LCL군은 세포질 전반에 걸쳐 지방적들이 관찰되었는데 크기는 OVX군에 비하여 작았다. 이상의 결과로 보아 구기자와 구기엽의 투여가 난소를 적출한 흰쥐의 혈청 콜레스테롤 함량을 낮출 뿐만 아니라 간세포의 손상과 지방적 생성을 억제하는 것으로 사료되었다.

Keywords

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