WATER AND ION METABOLISM IN PLACENTA .1. WATER AND ION CONTENT OF RABBIT PLACENTA IN DIFFERENT PERIODS OF GESTATION

  • 1 January 1977
    • journal article
    • research article
    • Vol. 56  (3) , 233-238
Abstract
Total tissue water of rabbit placenta decreased by 18% between the 9th day and the end of gestation. In the same period intracellular water decreased by 40% and the extracellular compartment swelled. Total tissue Na and Cl content increased by 34% and 27%, respectively, from days 16-33, while decreased by 30%. The intracellular concentration of these ions did not vary greatly during gestation. Moreover, the total tissue Mg content decreased by about 23% at the end of gestation while its intracellular concentration did not show marked changes. Ca content of rabbit placenta substantially increased during gestation and intracellular Ca showed a 5-fold increase from days 16-33 gestation. The results are discussed in terms of relation between water and ion content and placental tissue growth and aging.

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