Physiological and Pathological Androgen Actions in the Ovary

Area of Science:

• Reproductive Endocrinology
• Ovarian Physiology
• Hormone Signaling

Background:

• Androgens, traditionally viewed as male sex steroids, play significant roles in female reproduction.
• Their presence is critical in both healthy ovarian function and various pathological states.
• Recent research highlights the complex involvement of androgens within the female ovary.

Purpose of the Study:

• To review recent advancements in understanding the role of androgens in the ovary.
• To explore the function of the androgen receptor (AR) in ovarian cells and follicular development.
• To examine the impact of androgen excess and deficiency on female fertility and conditions like PCOS.

Main Methods:

• Review of current literature on androgen function in the female ovary.
• Analysis of findings from mouse knockout studies investigating androgen receptor (AR) roles.
• Examination of data from animal models of androgen excess for PCOS pathophysiology.

Main Results:

• Androgen receptor (AR) expression in granulosa cells is vital for normal follicular development and ovulation.
• Androgens regulate ovarian steroidogenesis essential for regular cycling.
• Androgen excess, as seen in PCOS, disrupts follicle development and leads to anovulatory infertility, potentially mediated by theca cell AR.

Conclusions:

• A precise balance of androgen activity within the ovary is essential for maintaining female reproductive health.
• Dysregulation of androgen signaling contributes to infertility and conditions such as PCOS.
• Further research using animal models aids in understanding PCOS pathophysiology and potential therapeutic targets.