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Updated: Apr 27, 2026

An In Vivo Estrogen Deficiency Mouse Model for Screening Exogenous Estrogen Treatments of Cardiovascular Dysfunction After Menopause
Published on: August 13, 2019
G-protein-coupled estrogen receptor as a new therapeutic target for treating coronary artery disease
Guichun Han1, Richard E White1
1Guichun Han, Women's Health Division, Michael E DeBakey Institute, Department of Physiology and Pharmacology, College of Veterinary Medicine and Biomedical Sciences, Texas A and M University, College Station, TX 77843, United States.
Insights
Selective activation of the G-protein-coupled estrogen receptor (GPER) in coronary arteries shows promise for treating coronary heart disease (CHD). This approach may increase blood flow and reduce disease consequences while avoiding estrogen therapy side effects.
Area of Science:
- Cardiovascular Biology
- Endocrinology
- Pharmacology
Background:
- Coronary heart disease (CHD) is a leading cause of mortality.
- Estrogen therapy for CHD has potential benefits but significant side effects and risks.
- Estrogen therapy may be detrimental to cardiovascular health in postmenopausal women.
Purpose of the Study:
- To review the current understanding of G-protein-coupled estrogen receptor (GPER) activation in coronary arteries.
- To explore the potential of selective GPER activation as a therapeutic strategy for CHD.
- To discuss the signaling mechanisms involved in GPER activation within coronary arteries.
Main Methods:
- Review of existing scientific literature on GPER expression and function in coronary arteries.
- Analysis of studies investigating the effects of GPER agonists on coronary vasodilation.
- Examination of research on GPER's role in coronary smooth muscle cell proliferation and migration.
Main Results:
- G-protein-coupled estrogen receptor (GPER) is expressed in coronary endothelium and smooth muscle.
- GPER activation leads to coronary artery dilation.
- GPER activation inhibits coronary smooth muscle cell proliferation and migration.
Conclusions:
- Selective GPER activation offers a potential therapeutic avenue for treating coronary heart disease (CHD).
- Targeting GPER may increase coronary blood flow and mitigate atherosclerotic disease progression.
- Understanding GPER signaling could lead to novel CHD therapies with improved safety profiles compared to traditional estrogen therapy.
Abstract:
Coronary heart disease (CHD) continues to be the greatest mortality risk factor in the developed world. Estrogens are recognized to have great therapeutic potential to treat CHD and other cardiovascular diseases; however, a significant array of potentially debilitating side effects continues to limit their use. Moreover, recent clinical trials have indicated that long-term postmenopausal estrogen therapy may actually be detrimental to cardiovascular health. An exciting new development is the finding that the more recently discovered G-protein-coupled estrogen receptor (GPER) is expressed in coronary arteries-both in coronary endothelium and in smooth muscle within the vascular wall. Accumulating evidence indicates that GPER activation dilates coronary arteries and can also inhibit the proliferation and migration of coronary smooth muscle cells. Thus, selective GPER activation has the potential to increase coronary blood flow and possibly limit the debilitating consequences of coronary atherosclerotic disease. This review will highlight what is currently known regarding the impact of GPER activation on coronary arteries and the potential signaling mechanisms stimulated by GPER agonists in these vessels. A thorough understanding of GPER function in coronary arteries may promote the development of new therapies that would help alleviate CHD, while limiting the potentially dangerous side effects of estrogen therapy.
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