[Comparison of effects of ingestion of Si on the content of Ca and Mg of different tissues of female rats normal or receiving oral oestrogen-gestogens (author's transl)].

In the adult normal the ingestion of silicon modifies the concentration of Ca and Mg of plasma and tissues most often opposite ways according to the mineral (silicate Na) or organic form (SMTO) of the administration. In the female adult under oestroprogestative traitment the organic Si is more active than the silicate to suppress the calcico-magnesic modifications caused by both oestroprogestatives (Norethisterone, Mestranol).