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Corpus luteum function in successful in vitro fertilization cycles
F N Shamma1, A S Penzias, S Thatcher
1Department of Obstetrics and Gynecology, Yale University School of Medicine, New Haven, Connecticut 06510.
Fertility and Sterility
|May 1, 1992
Summary
The corpus luteum in IVF pregnancies lasts about 72 days after successful gonadotropin-releasing hormone agonist/human menopausal gonadotropin stimulation. This study clarifies corpus luteum function during early pregnancy after assisted reproductive technologies.
Area of Science:
- Reproductive Endocrinology
- In Vitro Fertilization (IVF)
- Maternal-Fetal Medicine
Background:
- The corpus luteum's role in early pregnancy, particularly after assisted reproductive technologies, remains a topic of discussion.
- Understanding corpus luteum lifespan is crucial for optimizing pregnancy outcomes in IVF cycles.
Purpose of the Study:
- To determine the functional lifespan of the corpus luteum in early pregnancy following successful in vitro fertilization-embryo transfer (IVF-ET).
- To investigate the impact of gonadotropin-releasing hormone agonist (GnRH-a)/human menopausal gonadotropin (hMG) stimulation on corpus luteum duration in IVF pregnancies.
Main Methods:
- Retrospective analysis of 12 singleton intrauterine IVF-ET cycles with successful pregnancies.
- Serum samples collected starting 14 days post-hCG administration.
- Measurement of 17 alpha-hydroxyprogesterone (17 alpha-OHP), human chorionic gonadotropin (hCG), progesterone (P), and estradiol (E2) levels.
Main Results:
- A significant negative correlation was observed between 17 alpha-OHP levels and the duration from hCG administration.
- Regression analysis estimated the corpus luteum's lifespan to be 72 ± 25 days.
- Hormonal profiles (17 alpha-OHP, hCG, P, E2) were analyzed to assess luteal function.
Conclusions:
- In stimulated IVF-ET cycles resulting in singleton pregnancy, the corpus luteum demonstrates an average functional lifespan of 72 days.
- This finding contributes to a clearer understanding of luteal phase support and function in assisted reproduction.