Androgens in pregnancy: roles in parturition

Area of Science:

• Reproductive Endocrinology
• Maternal-Fetal Medicine
• Hormonal Regulation of Pregnancy

Background:

• Pregnancy requires a functional uterus to retain the fetus and facilitate delivery.
• Labor onset involves cervical remodeling and myometrial contraction, driven by uterine immune and endocrine systems.
• While progesterone and estrogen roles are studied, androgen effects during pregnancy are less understood.

Purpose of the Study:

• To review the role of androgens in pregnancy physiology and parturition.
• To investigate androgen concentrations, their impact on pregnancy outcomes, and their function in cervical and myometrial physiology.

Main Methods:

• Literature review on maternal and fetal androgen levels throughout gestation.
• Analysis of associations between androgen concentrations and adverse pregnancy outcomes.
• Examination of androgen roles in cervical remodeling and myometrial contractility.

Main Results:

• Androgen levels increase during gestation, potentially regulating key pregnancy and parturition processes.
• Androgens are implicated in cervical ripening by modulating collagen fibril organization.
• Androgens may promote myometrial relaxation through non-genomic pathways, crucial for maintaining pregnancy.

Conclusions:

• Elevated androgen levels are vital for establishing, maintaining pregnancy, and initiating labor.
• Further research into androgen mechanisms in cervical remodeling and myometrial contractility is necessary.
• Understanding these mechanisms could lead to new therapies for pregnancy complications like preterm birth.