Ten years post-menopausal hormone replacement therapy--effect on lipoproteins

Area of Science:

• Endocrinology and Metabolism
• Cardiovascular Health
• Pharmacology

Background:

• Menopause is associated with changes in lipid profiles, potentially increasing cardiovascular disease risk.
• Hormone replacement therapy, including synthetic estrogens like mestranol, is used to manage menopausal symptoms.
• The long-term effects of mestranol on lipoprotein metabolism in post-menopausal women require detailed investigation.

Purpose of the Study:

• To investigate the impact of long-term mestranol therapy on serum lipoprotein levels in post-menopausal women.
• To assess changes in triglycerides, LDL cholesterol, and HDL cholesterol fractions, particularly HDL2.

Main Methods:

• A cohort of 72 post-menopausal women was studied.
• 40 women received 10 years of mestranol therapy.
• 32 women received identical placebo tablets for comparison.

Main Results:

• Mestranol therapy led to increased serum triglycerides.
• A significant decrease in low-density lipoprotein (LDL) cholesterol was observed.
• High-density lipoprotein (HDL) cholesterol levels increased, primarily due to a rise in the cardioprotective HDL2 fraction.

Conclusions:

• Long-term mestranol therapy demonstrates a beneficial effect on serum lipoprotein profiles in post-menopausal women.
• The observed alterations in LDL and HDL cholesterol, especially HDL2, may contribute to reduced risk of ischemic heart disease.
• Mestranol may offer cardioprotective advantages for post-menopausal women.