What hormone does DHEA-S convert into in the placenta?

• A. Progesterone
• B. Estradiol
• C. Estrogen
• D. Testosterone

Answer: (C)

DHEA-S, or dehydroepiandrosterone sulfate, is an important steroid hormone produced primarily by the adrenal glands. Within the placenta, DHEA-S undergoes conversion to estrogen. Specifically, it is a precursor for estradiol and estrone, which are significant forms of estrogen in pregnancy. The placenta has the enzymatic capability to convert DHEA-S into estrogens, which play crucial roles in maintaining pregnancy, promoting uterine growth, and preparing the body for labor.

Estrogen, as produced from DHEA-S, is vital in regulating various metabolic processes during pregnancy and ensuring appropriate fetal development. This conversion is part of a complex hormonal network that supports pregnancy and fetal growth, highlighting the essential role of DHEA-S in producing the necessary estrogen levels. Understanding these hormonal pathways is key in perinatal pediatrics, as they impact maternal and fetal health significantly.