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Effects of Capsosiphon fulvescens Extract on Lipid Metabolism in Rats Fed High Cholesterol Diet

매생이 추출물이 고콜레스테롤 식이를 급여한 흰쥐의 지질대사에 미치는 영향

  • 이정화 (조선대학교 식품영양학과) ;
  • 이유미 (조선대학교 식품영양학과) ;
  • 이재준 (조선대학교 식품영양학과) ;
  • 이명렬 (조선대학교 식품영양학과)
  • Published : 2006.04.01

Abstract

This study was performed to investigate the effects of Capsosiphon fulvescens (CF) extract on serum and liver lipid metabolism in rats. Male Sprague-Dawley rats were administered 1% cholesterol and 0.25% sodium cholate to induce hypercholesterolemia and were divided into six groups. Experimental groups were administered with following diets; normal diet group (NC), high cholesterol diet group (HC), normal diet and CF extract (200 mg/kg) administered group (NC-CFL), normal diet and CF extract (400 mg/kg) administered group (NC-CFH), high cholesterol diet and CF extract (200 mg/kg) adwlinistered group (HC-CFL), and high cholesterol diet and CF extract (400 mg/kg) administered group (HC-CFH). The body weight gain and feed efficiency ratio were increased by high cholesterol diet, but gradually decreased to the corresponding level of the normal diet group by administered CF extract. The serum total cholesterol concentration of normal diet group was significantly higher than those of NC-CFL group and NC-CFH group. The concentrations of serum total cholesterol LDL-cholesterol and triglyceride and the atherogenic index .were tended to decrease in the CF extract administered groups compared with the high cholesterol diet group. However, HDL-cholesterol and phospholipid concentrations in serum decreased in the high cholesterol diet group and markedly increased by the CF extract administered groups. There were no differences in the concentrations of serum triglyceride, phopholipid, LDL-cholesterol, HDL-cholesterol and free cholesterol in normal diet groups. Concentrations of total cholesterol and triglyceride in liver and kidney were also markedly decreased in the CF administered groups. Total cholesterol and triglyceride concentrations of adipose tissue in the CF administered groups were also decreased compared with the high cholesterol diet group. In addition, there were no differences in the concentrations of liver, kidney and adipose tissue total lipid, triglyceride and total cholesterol in normal diet groups. The activities of heparin-releasable lipoprotein lipase (LPL) and total-extractable LPL in adipose tissue were increased in the high cholesterol diet group compared with the CF extract administered groups, but those of the NC -CFL group and NC-CFH group were similar to the normal diet group. Taken together, it is suggested that the extract of CF have an antiatherosclerotic effect by reducing cholesterol level of serum and liver. Furthermore, the extract of CF decreased LPL activity and triglyceride concentration, resulting in less lipid storage.

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