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KMID : 1134819970260050936
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Journal of the Korean Society of Food Science and Nutrition
1997 Volume.26 No. 5 p.936 ~ p.942
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Effects of Dietary Protein and Magnesium Levels on Ca and Mg Metabolism in Rats
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Jung Bok-Mi
Bae Song-Ja
Jung Hae-Ok
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Abstract
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The present study was carried out to investigate the effects of dietary protein and magnesium levels on calcium and magnesium metabolism in male Sprague-Dawley rats. Forty-eight male rats(average weight, 210g) divided into six diet groups; protein 8% and Mg-free diet, protein 8% and Mg 400㎎/㎏ diet, protein 8% and Mg 800㎎/㎏ diet, protein 20% and Mg-free diet, protein 20% and Mg 400㎎/㎏ diet, and protein 20% and Mg 800㎎/㎏ diet group. After the rats were fed with experimental diets for 8 weeks, organ weight, serum calcium, magnesium concentration, and urinary calcium and magnesium concentration were examined. Kidney weight was significantly higher in protein 8% and Mg-free group compared with other groups. Serum calcium concentration of protein 8% group tended to decrease with the increase of the level of magnesium. Serum magnesium concentration in protein 8% and 20% group was lower in Mg-free group than that in other groups(p＜0.05) and it also increased as the dietary magnesium level was increased. Urinary calcium and magnesium concentration in Mg-free group were significantly lower than those of other groups.
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KEYWORD
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protein, magnesium, calcium, rat
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