[Feto-placental system in diabetes mellitus and hydramnios].

The fetoplacental system of 132 women with diabetes mellitus and 85 healthy women was studied during the third pregnancy trimester. Blood estradiol and urinary estriol levels were found-reduced in the diabetics, particularly in those with insulin-dependent diabetes. Blood progesterone and oxytocinase levels were found unchanged. These parameters lowered in diabetic glomerulosclerosis. If pregnant diabetics develop hydramnion, their blood estradiol, progesterone, prolactin, and oxytocinase levels increased.