Journal of Applied Biological Chemistry

The Korean Society for Applied Biological Chemistry (한국응용생명화학회)
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Hepatoprotective Effects of Pig Placental Hydrolysates on Liver Damage-induced Rats by Injecting Carbon Tetrachloride

사염화탄소 주입으로 간손상을 유발시킨 백서에서 돈태반가수분해 물 투여가 간기능 보호에 미치는 영향

  • Received : 2012.04.19
  • Accepted : 2012.05.29
  • Published : 2012.06.30
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Abstract

The aim of this study was to determine hepatoprotective effects of pig placenta hydrolysates (PLA) on liver damage-induced rats. Sprague Dawley rats were subcutaneously injected with carbon tetrachlorides and divided into 4 groups: negative control (DMSO treated), two PLA treated groups, low dosage of PLA (LPLA; 300 mg/kg body weight) and high dosage of PLA (HPLA; 1000 mg/kg body weight), and silymarin treated group (80 mg/kg body weight). Rats in each group orally received assigned compounds for 3 weeks. For the normal control group vehicle (corn oil) was injected. After 3 weeks, liver and spleen weights were greater in the two PLA and silymarin groups than the negative control group. After bromosulfalein (BSP) treatment, the clearance rates were in the descending order of negative control > LPLA > HPLA = silymarin and serum BSP levels exhibited the opposite trends of the clearance rates. Serum levels of aspartate aminotransferase, alanine aminotransferase, triglyceride, and cholesterol lowered with PLA in a dose-dependent manner. The decrease with HPLA was similar to that with silymarin. In addition, triglyceride, cholesterol, lipid peroxides levels in the liver decreased in HPLA and silymarin compared to the negative control. The liver morphometry was improved in HPLA- or silymarin-treated rats in comparison to the negative control. In conclusion, HPLA administration ameliorated the hepatotoxicity as much as silymarin in rats injected with carbon tetrachlorides.

본 연구의 목적은 간 손상을 유발시킨 백서에서 돈태반 가수분해물의 경구 투여가 간 기능 개선에 효과가 있는지를 조사하는 것이다. 사염화탄소를 피하주사하여 간 손상을 유발한 백서를 4군으로 나누어 DMSO(음성대조군), 저용량과 고용량(500과 1000 mg/kg 체중) 돈태반 가수분해물, silymarin (80 mg/kg 체중; 양성대조군)을 3주간 경구 투여하였다. 정상대조군은 사염화탄소 대신 용매인 옥수수 기름만을 피하주사하였다. 3주 후에 간과 지라의 질량은 음성대조군에 비해 농도 의존적으로 돈태반 가수분해물과 silymarin 투여군이 더 높았다(p<0.05). 제거율을 계산하여 간의 기능을 나타내는 bromosulfalein (BSP)를 주입하였을 때 간에서의 제거율은 음성대조군에 비해 돈태반 가수분해물의 복용량에 비례해서 증가하였고, 특히 고용량 돈태반투여군은 silymarin군과 유사한 값을 나타내었다. 이 결과 혈청내 BSP 농도는 돈태반투여군과 silymarin군에 비해 음성대조군에서 더 낮았다. 모든 군에서 간 기능의 지표인 혈청 AST와 ALT의 농도는 시간이 지남에 따라 감소하였는데, 돈태반 가수분해물과 silymarin 투여는 음성대조군에 비해 큰 폭으로 감소하였다. 간과 혈청내 중성지방과 콜레스테롤 농도 그리고 간세포내의 지질 과산화물과 간 조직형태의 변형도 돈태반 가수분해물의 농도에 비례해서 감소하였고, 고용량 돈태반군은 silymarin군 만큼 감소하였다. 결과적으로 사염화탄소에 의해서 간 손상을 유발시킨 백서에서 고용량의 돈태반 가수분해물 투여가 간의 손상을 억제하는 효과가 있다고 결론지을 수 있다.

Keywords

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