Related Experiment Videos
[Endocrinology of the climacteric]
T von Holst1, K Klinga, B Runnebaum
1Universitäts-Frauenklinik Heidelberg.
Archives of Gynecology and Obstetrics
|January 1, 1989
Summary
Menopause involves declining estrogen levels, but adrenal androgens maintain some production. Severe obesity may increase active estradiol availability due to lower SHBG levels.
Area of Science:
- Endocrinology
- Reproductive biology
- Steroid hormone metabolism
Context:
- Menopause is characterized by a significant decrease in estrogen levels.
- Estrogen production declines with age, particularly between 49 and 54 years.
- Adrenal cortex continues to produce androgen precursors for estrogens into advanced age.
Purpose:
- To investigate the changes in estrogen and androgen levels during menopause.
- To compare hormone concentrations in healthy individuals and those with severe obesity.
- To determine the impact of obesity on sex hormone-binding globulin (SHBG) and free estradiol.
Summary:
- In healthy women aged 49-54, serum estrone decreased to 35 pg/ml and estradiol to 10 pg/ml.
- Androgen levels showed a modest 25% decrease over 30 years due to continued adrenal production.
- Severely obese patients exhibited lower SHBG concentrations, leading to higher free active estradiol levels.
Impact:
- Understanding menopausal endocrinology is crucial for hormone replacement therapy and managing age-related changes.
- The findings highlight the role of adrenal androgens in postmenopausal estrogen synthesis.
- Lowered SHBG in obesity may increase estradiol's biological activity, potentially influencing health outcomes.