Ovarian stimulation protocols: impact on oocyte and endometrial quality and function

Area of Science:

• Reproductive Endocrinology
• In Vitro Fertilization
• Human Embryology

Background:

• Ovarian stimulation (OS) protocols are varied, aiming to maximize mature oocyte yield for improved live birth rates.
• Debate exists on whether OS protocols negatively impact oocyte and endometrial quality, affecting in vitro fertilization (IVF) outcomes.
• The

Purpose of the Study:

• To review the current understanding of how exogenous hormone administration during OS affects human oocyte quality.
• To examine the influence of OS on endometrial preparation and receptivity for embryo implantation.
• To identify the need for better markers of oocyte developmental competence and endometrial roles in assisted reproductive technology (ART).

Main Methods:

• Literature review of studies investigating ovarian stimulation protocols.
• Analysis of research on the effects of exogenous hormones on oocyte quality.
• Examination of data correlating OS with endometrial receptivity and implantation success.

Main Results:

• The "more is better" approach to oocyte retrieval is challenged by potential negative impacts on oocyte quality.
• Evidence suggests OS may perturb endometrial preparation and receptivity, though direct correlation with implantation success is difficult.
• Current markers for oocyte competence and endometrial roles in ART success require further refinement.

Conclusions:

• Exogenous hormone administration during OS may induce perturbations in human oocyte quality and endometrial function.
• Further research is needed to optimize OS protocols and improve ART success rates.
• Developing better markers for oocyte developmental competence and endometrial receptivity is crucial for advancing reproductive technologies.