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Published on: April 7, 2014
Effect of estrogen on aortic function in postmenopausal women
C Stefanadis1, E Tsiamis, J Dernellis
1Department of Cardiology, Hippokration Hospital, University of Athens, Athens, Greece.
The American Journal of Physiology
|February 10, 1999
Summary
Estrogen administration improved aortic elastic properties and reduced wave reflection in postmenopausal women, including those with coronary artery disease. This suggests potential cardiovascular benefits for women
Area of Science:
- Cardiovascular Physiology
- Endocrinology
Background:
- Estrogen's role in cardiovascular health is complex and debated.
- Postmenopausal women experience changes in aortic elastic properties.
- Coronary artery disease (CAD) may be associated with altered aortic function.
Purpose of the Study:
- To investigate the acute effects of 17beta-estradiol on aortic elastic properties in postmenopausal women.
- To compare these effects in women with and without coronary artery disease.
- To explore potential mechanisms for estrogen's cardiovascular effects.
Main Methods:
- Aortic pressure-diameter relationships were measured in 20 postmenopausal women (10 with CAD, 10 without).
- Measurements were taken before and after intravenous administration of 17beta-estradiol.
- Aortic diameter was assessed using an intravascular catheter, and pressure with a micromanometer.
Main Results:
- Baseline aortic elastic properties were reduced in women with CAD compared to those without.
- Aortic distensibility significantly increased in both groups after estrogen administration (P < 0.01 and P < 0.05).
- Estrogen administration led to reduced wave reflection (P < 0.001) and altered the pressure-diameter loop, indicating active changes in aortic elasticity.
Conclusions:
- Intravenous 17beta-estradiol acutely improves aortic elastic properties and reduces wave reflection in postmenopausal women.
- These findings suggest a direct beneficial effect of estrogen on vascular function.
- Estrogen's action on aortic properties may contribute to its cardiovascular benefits and holds therapeutic potential for postmenopausal women.
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