[Dynamics of water, electrolyte and trace element content of the placenta, fetuses and organs of female rats during pregnancy].
From the 15th to 21st day of pregnancy the mass of foetus increases by 23.5 times in rats; water content decreases from 10.90 +/- 0.36 to 6.63 +/- 0.47 g H2O/g dry substance. During growth of foetus and placenta the amount of sodium, potassium, calcium, magnium, ferrum and cuprum increases in a parallel way in both of them. In the course of embryogenesis, a relative constancy of inorganic substances content is observed in the wet substance of foetus' body but their amount per unit of dry mass of the substance decreases. Owing to effectiveness of the osmoregulating system, administration of 5 ml of water per 100 g of pregnant rat's body mass did not affect the water--salt homeostasis in the female and foetus. Mainly the inorganic components of food are assimilated for construction of the foetus body and the female organism's cuprum and calcium are used but partially.
D000818:Animals; D004573:Electrolytes / Q000378:metabolism*; D005260:Female; D005333:Fetus / Q000378:metabolism*; D005865:Gestational Age; D010920:Placenta / Q000378:metabolism*; D011247:Pregnancy; D011270:Pregnancy, Animal; D051381:Rats; D014018:Tissue Distribution; D014131:Trace Elements / Q000378:metabolism*; D014867:Water / Q000378:metabolism*; D014882:Water-Electrolyte Balance
D004573:Electrolytes; D014131:Trace Elements; D014867:Water
Dinamika soderzhaniia vody, élektrolitov i mikroélementov v platsente, u plodov i v nekotorykh organakh samok krys vo vremia beremennosti.