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Endometrial progesterone concentrations during the menstrual cycle.
The Journal of Clinical Endocrinology and Metabolism
|August 1, 1975
Summary
This study found that endometrial progesterone levels closely mirror plasma progesterone levels throughout the menstrual cycle. However, endometrial progesterone does not correlate with estradiol-17 beta concentrations.
Area of Science:
- Reproductive Endocrinology
- Gynecology
Background:
- Accurate assessment of the luteal phase is crucial for reproductive health.
- Understanding the relationship between local endometrial and systemic hormonal levels is key.
Purpose of the Study:
- To investigate the correlation between endometrial progesterone and plasma progesterone concentrations.
- To examine the relationship between endometrial progesterone and plasma estradiol-17 beta levels during the menstrual cycle.
Main Methods:
- Endometrial tissue samples were collected during the menstrual cycle.
- Progesterone concentrations were measured in endometrial tissue.
- Plasma progesterone and estradiol-17 beta levels were simultaneously measured.
Main Results:
- A strong positive correlation was observed between endometrial progesterone and plasma progesterone concentrations.
- No significant correlation was found between endometrial progesterone and plasma estradiol-17 beta concentrations.
Conclusions:
- Endometrial progesterone levels serve as a reliable indicator of systemic progesterone status.
- Estradiol-17 beta does not appear to directly influence endometrial progesterone levels in the same manner as systemic progesterone.