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  • Title: Effect of dietary phosphate on intestinal calcium and phosphate absorption.
    Author: Cañas F, Pereira R, Tolosa N, Asteggiano C.
    Journal: Acta Physiol Lat Am; 1980; 30(4):245-52. PubMed ID: 6100943.
    Abstract:
    Intestinal Ca and P absorption was investigated on rachitic chicks raised on diets with a 1% Ca and 0.3% or 1% P contents. 45Ca and 32P absorption was determined by the technique of the isolated gut sac in vivo. In addition, 32P transport was also measured by the everted gut sac procedure in vitro. Treatment with vit. D3 during 7 days increased the 45Ca absorption in animals fed diets containing 0.3% or 1% P. 32P absorption showed an increase after 2 days of treatment and a decrease afterwards. The reduction of 32P absorption was larger in animals fed diet with 1% P. Study of 32P transport with the everted gut sac technique showed an increase after vit. D3 and a loss of intracellular P, regardless the duration of treatment.
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