Related Experiment Videos
Bilateral oophorectomy and plasma renin substrate concentration
International Journal of Clinical Pharmacology, Therapy, and Toxicology
|June 1, 1982
Summary
This study found that non-pregnant estrogen levels do not significantly affect plasma renin substrate concentration in women undergoing gynecological surgery. Estrogen replacement therapy also showed no significant impact on these levels.
Area of Science:
- Endocrinology
- Reproductive Biology
- Cardiovascular Physiology
Background:
- Plasma renin substrate (PRS) is a key component of the renin-angiotensin-aldosterone system (RAAS).
- Endogenous estrogens are known to influence RAAS components during pregnancy.
- The role of non-pregnant estrogen levels in PRS regulation is not well understood.
Purpose of the Study:
- To investigate the effect of estrogen withdrawal and replacement on plasma renin substrate concentration in premenopausal women.
- To determine if non-pregnant endogenous estrogen levels regulate plasma renin substrate.
Main Methods:
- 11 premenopausal women underwent bilateral oophorectomy and hysterectomy.
- Plasma renin substrate concentration was measured preoperatively.
- PRS levels were measured postoperatively and after 3 months of estradiol valerate treatment (2 mg/day).
Main Results:
- Preoperative PRS concentration was 1573 +/- 477 ng angiotensin I/ml.
- Postoperative PRS concentration (1632 +/- 459 ng angiotensin I/ml) showed no significant change.
- Estradiol valerate treatment did not significantly alter PRS levels (1762 +/- 467 ng angiotensin I/ml).
Conclusions:
- Non-pregnant endogenous estrogen levels do not appear to significantly regulate plasma renin substrate.
- Surgical estrogen withdrawal and subsequent replacement therapy did not impact PRS levels in this cohort.