Journal of Nutrition and Health

The Korean Nutrition Society (한국영양학회)
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Gender Difference in the Effects of Gonadectomy and Hypercholesterol Diet on Plasma and Liver Cholesterol and Triglyceride bevels, Platelet Aggregation and Liver Tissue in Sprague Dawley Rats

성소의 제거와 고콜레스테롤 식이 급여가 흰쥐의 혈장과 간의 콜레스테롤, 중성지방 수준과 혈소판 응집성 및 간 조직에 미치는 영향에 있어서 암.수의 차이

  • 오인숙 (제주대학교 자연과학대학 식품영양학과) ;
  • 강정애 (제주대학교 자연과학대학 식품영양학과) ;
  • 강정숙 (제주대학교 자연과학대학 식품영양학과)
  • Published : 2002.01.01
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Abstract

Gender differences in the effects of gonadectomy and high cholesterol diet on body weight and body cholesterol were investigated by using Sprague Dawley rats. Body weight, plasma and liver levels of cholesterol and triglyceride and platelet aggregation were examined in ovariectomized(OVX) or orchidectomized(ODX) rats with their intacts after feeding diet with or without 0.5% cholesterol. Body weight was significantly increased(p < 0.01) in OVX rats and significantly decreased(p < 0.01) in ODX rats compared to their respective intact rats, and cholesterol diet significantly(p < 0.05) decreased body weight in gonadectomized rats. Liver lobes from rats fed cholesterol diet were opaque and larger than those from rats find control dict, resulting in a significant increase(p < 0.01) in LW/BW ratio. Plasma and liver levels of total cholesterol were significantly increased (p < 0.01) in female rats regardless ovariectomy when find 0.5% cholesterol diet, but those levels in male rats were increased only when they were orchidectomized(p < 0.0l). Plasma HDL-cholesterol was significantly decreased(p < 0.05) in both sexes when find cholesterol diet. HDL-cholesterol were higher in female than male rats regardless treatments(p < 0.05). Liver triglyceride was significantly increased(p < 0.05) in both sexes when find cholesterol dict. Plasma level of triglyceride was not different among groups except significant decrease(p < 0.05) in cholesterol find ODX rats. Maximum platelet aggregation in female rats was significantly lower(p < 0.05) than male, but ovariectomy and cholesterol diet caused an increase te the level of male rats. Microscopic examination showed cholesterol diet caused a lipid accumulation in liver. Results indicate that intact female rats have higher response to hypercholestcrolemic diet than intact male rats and orchidectomy causes male rats more responsive to hypercholesterolemic diet. However, ovariectomy causes an increase female food efficiency ratio to the level of male rats, significantly increasing body weight.

Keywords

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