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Review Article
Mechanisms of Disease
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Volume 340:1801-1811 June 10, 1999 Number 23
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The Protective Effects of Estrogen on the Cardiovascular System
Michael E. Mendelsohn, M.D., and Richard H. Karas, M.D., Ph.D.

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The incidence of cardiovascular disease differs significantly between men and women, in part because of differences in risk factors and hormones.1 The incidence of atherosclerotic diseases is low in premenopausal women, rises in postmenopausal women, and is reduced to premenopausal levels in postmenopausal women who receive estrogen therapy.1,2,3 Until recently, the atheroprotective effects of estrogen were attributed principally to the hormone's effects on serum lipid concentrations. However, estrogen-induced alterations in serum lipids account for only approximately one third of the observed clinical benefits of estrogen.3,4,5 Reviews of the data suggest that the direct actions of estrogen on blood vessels contribute . . . [Full Text of this Article]

Estrogen Receptors and Estrogens

Estrogen Receptors

Estrogens and Antiestrogens

Estrogen-Receptor–Associated Proteins

Systemic Effects of Estrogen

Effects on Serum Lipoproteins

Effects on Coagulation, Fibrinolytic, and Other Vasoactive Proteins

Antioxidant Effects

Direct Effects on Vascular Cells and Tissues

Rapid, Nongenomic Effects

            Ion Channels and Rapid Effects

            Nitric Oxide and Rapid Effects

Longer-Term Effects on the Vasculature

            Effects on Genes Regulating Vascular Tone

            Effects on the Response to Vascular Injury and on Atherosclerosis

Conclusions


Source Information

From the Molecular Cardiology Research Institute and the Department of Medicine, New England Medical Center and Tufts University School of Medicine, Boston.

Address reprint requests to Dr. Mendelsohn at the Molecular Cardiology Research Institute, Tufts University School of Medicine, New England Medical Center, 750 Washington St., No. 80, Boston, MA 02111, or at michael.mendelsohn@es.nemc.org.

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