Sartor M E, de Nóbrega F J, Tonete S de S, Trinidade C E, Curi P R
Arch Latinoam Nutr. 1982 Jun;32(2):450-62.
An attempt was made to point out the alterations in serum calcium, phosphorus and magnesium, during gestation in female rats fed ad libitum normal diets (protein content, 21%), a protein-calorie deficient diet (protein content, 1%) in a quantity equal to half of that given to normal rats. As the data revealed, in the control group of pregnant rats a significant increase in calcium on the 17th and 19th days was observed, as well as a decrease at the end of gestation. The values remained at higher levels in this group than those detected in the control non-pregnant rats. The above-mentioned increase was not observed in the undernourished pregnant rats, which showed an evident decrease. The behavior of phosphorus in the control pregnant rats was similar to calcium behavior, but this "ion" had not suffered the influence of malnutrition when isolatedly imposed. With regard to magnesium, we noticed that throughout the experiment serum concentration was not influenced either by malnutrition or by gestation. Malnutrition itself was the greatest responsible factor as judged by the differences observed among the groups.
研究试图指出，随意喂食正常饮食（蛋白质含量21%）、蛋白质 - 热量缺乏饮食（蛋白质含量1%，给予量为正常大鼠的一半）的雌性大鼠在妊娠期血清钙、磷和镁的变化情况。数据显示，在怀孕大鼠的对照组中，第17天和第19天钙显著增加，妊娠末期则下降。该组的值始终高于未怀孕的对照大鼠组的值。营养不良的怀孕大鼠未观察到上述增加情况，而是呈现明显下降。对照怀孕大鼠中磷的变化与钙相似，但单独施加营养不良时，这种“离子”未受其影响。关于镁，我们注意到在整个实验过程中，血清浓度既不受营养不良影响，也不受妊娠影响。从各组间观察到的差异判断，营养不良本身是最大的影响因素。
