Journal of the Korean Society of Food Science and Nutrition (한국식품영양과학회지)

The Korean Society of Food Science and Nutrition (한국식품영양과학회)
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The Macro Mineral Contents in High Fat Diet-Induced Obese Rats Fed Various Amounts of Zinc

고지방식이 유도 비만쥐에서 아연 수준이 다량 무기질 함량에 미치는 영향

  • Kim, Hyun-Sook (Dept. of Food and Nutrition, Sookmyung Women's University) ;
  • Sung, Chung-Ja (Dept. of Food and Nutrition, Sookmyung Women's University)
  • 김현숙 (숙명여자대학교 식품영양학과) ;
  • 승정자 (숙명여자대학교 식품영양학과)
  • Published : 2009.08.31
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Abstract

This study was conducted to investigate the effect of dietary zinc on macro mineral contents of high fat diet-induced obese rats. The obese group was divided into three groups by zinc levels of diet, such as low (50% requirement), adequate (100%) and high (200%) levels of dietary zinc. The calcium, magnesium, sodium and potassium contents in serum and organs were measured by ICP. There were no significant differences in the food intake, weight gain and feed efficiency ratio among the different dietary zinc levels. Also, the liver, kidney and spleen weight did not show the significant differences among each level of dietary zinc. However, serum sodium and potassium concentrations in the low zinc diet group were significantly higher than in the other diet groups. In high zinc diet group, the calcium contents of liver was significantly higher than in the other diet groups, magnesium and potassium contents of liver were higher than in the low zinc diet group. The sodium contents of liver and magnesium and potassium contents of spleen were significantly lower in the low zinc diet group than in the other diet groups. In conclusion, the macro mineral contents of serum, liver and spleen in obese rats were changed by dietary zinc levels. Especially, the low zinc diet group considerably changed of macro mineral contents in organs. Therefore, it may be suggested that adequate level of dietary zinc in obese individuals should be required.

본 연구에서는 비만에서 아연 공급수준이 다량 무기질 함량에 미치는 영향을 알아보기 위해 고지방식이로 유도된 비만쥐를 대상으로 아연 요구량의 50%(결핍군), 100%(적정군), 200%(과잉군) 수준으로 공급한 후 혈청 및 조직의 칼슘, 마그네슘, 나트륨 및 칼륨의 함량을 분석하였다. 비만쥐에서 아연 결핍군은 적정군에 비해 혈청의 나트륨, 칼륨 및 비장의 마그네슘, 칼륨 함량이 높았고, 간의 나트륨 함량이 낮았으며, 아연 과잉군은 적정군에 비해 간의 칼슘 함량이 높았다. 이와 같이 아연의 결핍과 과잉 시 비만쥐에서는 혈청과 간, 비장 등이 조직 내 다량 무기질의 함량 변화를 초래했으며, 특히 아연 결핍이 더 많은 조직 내 무기질 함량에 변화를 가져왔다. 따라서 비만에 있어서 아연의 적절한 섭취에 대한 중요성이 강조되어야 할 것으로 보이며, 앞으로 대사적 기전을 규명할 수 있는 지속적인 연구가 요구된다.

Keywords

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