Effects of Dietary Levels of Vitamin A on Lipid Composition and Zn Contents in Zn-deficient Rats

비타민 A의 공급수준이 Zn 결핍식이를 섭취한 흰쥐의 체내 지질성분과 Zn 함량에 미치는 영향

  • 이경순 (영남대학교 식품영양학과) ;
  • 조수열 (영남대학교 식품영양학과) ;
  • 서정숙 (영남대학교 식품영양학과)
  • Published : 1994.02.01

Abstract

The present study was conducted to evaluate the effect of dietary levels of vitamin A on the lipid composition in rats fed Zn-deficient diets. Fifty male Sprague-Dawley rats were fed 5 experimental diets for 7 weeks. Rats were fed Zn-and vitamin A-deficient diet or the same diets supplemented with various levels of vitamin. A liver total lipid, cholesterol and triglycerides contents tended to decrease in Zn-deficient rats, but the supplementation of excess vitamin A enhanced those contents. Plasma cholesterol content was significantly higher in feeding Zn-deficient and excess vitamin A diet. Plasma triglyceride and phospolipid contents were higher in Zn-deficient groups, but not influenced by dietary levels of vitamin. A . Plasma HDL-cholesterol content was not changed by Zn-deficient diets. Plasma alkaline phosphatase activity was significantly reduced in Zn-deficient groups. Zinc contents of plasma and liver were influenced by the dietary level of zinc, but not changed by supplementation of vitamin A.

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