Open AccessWater and Ion Metabolism in Placenta
Author(s) -
Cittadini A,
Paparella P,
Castaldo F,
Romor R,
Polsinelli F,
Carelli G,
Bompiani A,
Terranova T
Publication year - 1977
Publication title -
acta obstetricia et gynecologica scandinavica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.401
H-Index - 102
eISSN - 1600-0412
pISSN - 0001-6349
DOI - 10.3109/00016347709162005
Subject(s) - placenta , gestation , intracellular , potassium , extracellular , sodium , calcium , endocrinology , metabolism , medicine , andrology , pregnancy , biochemistry , chemistry , biology , fetus , genetics , organic chemistry
. Total tissue water of rabbit placenta decreases by 18% between the 9th day and the end of gestation. In the same period intracellular water decreases by 40% and the extracellular compartment swells. Total tissue sodium and chloride content increase by 34% and 27% respectively from the 16th to the 33rd day while potassium decreases by 30%. The intracellular concentration of these ions does not vary greatly during gestation. Moreover the total tissue magnesium content decreases by about 23% at the end of gestation while its intracellular concentration does not show marked changes. Calcium content of rabbit. placenta substantially increases during gestation and intracellular calcium shows a fivefold increase from the 16th to the 33rd day of gestation. The results are discussed in terms of relation between water and ion content and placental tissue growth and aging.