[Relation between steroids and apoprotein B in maternal and fetal blood in late pregnancy].

In 31 pregnant women in the 32nd to 40th week of pregnancy estimations of apoprotein B in the blood serum were done. Besides this, in 15 cases the concentration of apoprotein B in the umbilical cord serum was measured. Furthermore, apoprotein B and dehydroepiandrosterone in cord serum and estriol in the serum of the mothers were measured in 10 cases. Dexamethasone was administered to 6 patients in order to prevent respiratory distress syndrome of the newborns. It has been tried to explain the changes of the parameters.