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http://dx.doi.org/10.3746/jkfn.2004.33.6.958

Effects of Ca Supplementation on Mineral Metabolism during Pregnancy and Lactation of Calcium-Deficient Young Adult Rats  

박미나 (서울대학교 식품영양학과)
김은애 (서울대학교 식품영양학)
이연숙 (서울대학교 식품영양학과)
Publication Information
Journal of the Korean Society of Food Science and Nutrition / v.33, no.6, 2004 , pp. 958-964 More about this Journal
Abstract
This study examined the effects of maternal calcium intake levels on mineral metabolism during pregnancy and lactation. Five week-old female Sprague-Dawley rats were fed normal Ca (NCa, 0.5%) and low Ca (LCa, 0.15%) diets for 5 weeks during preconception. The low Ca intake group was divided into three groups and fed low Ca (0.15%), normal Ca (0.5%) and high Ca (1.5%) diets for 6 weeks during pregnancy and lactation. All of the rats were mated with normal male rats. The control group was consistently fed a normal Ca diet for 11 weeks. Pups were adjusted to 10 per dam. After weaning, dams and their weaned rats were sacrificed. We measured total protein, albumin, alkaline phosphatase and mineral content in serum and weight, length, breaking force, ash and mineral content in bone and kidney. There was no significant difference in weight gain and food intake among the groups. Serum total protein and albumin were in the normal range but slightly decreased with a low Ca diet during preconception. Calcium supplementation above normal level increased bone weight, Ca content and breaking force in femur of maternal and their weaned rats. However, high maternal Ca intake significantly decreased Mg and Fe contents in maternal serum and bone and Mg and Zn contents in serum of weaned rats. Also, it induced Ca, P and Mg deposit in maternal kidney. Our experimental results suggest that Ca deficiency during preconception may deteriorate bone status of mother and their offsprings. Moreover, high Ca supplementation during pregnancy and lactation may lead to disturb mineral metabolism in bone and other tissues.
Keywords
calcium supplementation; pregnancy; lactation; mineral metabolism;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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