Korean J Stroke.
2011 Apr;13(1):20-26.
Relationships between Endogenous Estrogen and the Risk Factors for Vascular Disease
- Affiliations
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- 1Department of Neurology, College of Medicine, Chungnam National University, Daejeon, Korea. jeikim@cnu.ac.kr
- 2Department of Information and Statistics, College of Natural Science, Chungnam National University, Daejeon, Korea.
- 3Department of Family Medicine, College of Medicine, Chungnam National University, Deajeon, Korea.
Abstract
- BACKGROUND
This study evaluated the relationships between endogenous estrogen levels and vascular risk factors in healthy men and women.
METHODS
Demographics and laboratory data were collected from normotensive subjects (123 men and 154 women) in their thirties, forties and fifties who had normal laboratory profiles and no cardiovascular risk factors. Initially, estradiol, low-density lipoprotein (LDL)-cholesterol, triglyceride, and high-density lipoprotein (HDL)-cholesterol, systolic and diastolic blood pressure (SBP and DBP), NO2/NO3, homocysteine, and body mass index (BMI) were measured. Then, the relationships between estradiol and the evaluated items were analyzed with comparison of means and correlation, and stepwise multiple regression analysis based on genders and age-groups.
RESULTS
Estradiol levels decreased with aging in women. Lower LDL and triglyceride, higher HDL levels, and lower SBP and DBP observed in women were correlated with decreasing age as well as increasing estradiol level. On the multivariate analysis, however, estradiol levels were negatively correlated with the changes in SBP, DBP, and triglyceride among the lipid variables. BMI was positively related with the increase of SBP and DBP and the estradiol levels. Although higher NO2/NO3 and lower homocysteine levels were observed in women than men, the NO2/NO3 and homocysteine levels had no significant correlation with estradiol changes.
CONCLUSION
The study observed the beneficial relationships between endogenous estrogen, and blood pressures and lipids in healthy women. The estrogen-related benefits observed in this study were lower TG levels, SBP, and DBP in young women than those in older women or in men.
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