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- W2247996556 abstract "Estrogen replacement therapy (ERT) has been associated with favorable effects on risk factors for atherosclerosis. In observational studies ERT was also suggested to reduce the risk of cardiovascular disease in postmenopausal women, but the cardioprotective role of estrogen has been challenged after negative results in randomized trials. However, the mechanisms of estrogen action in atherosclerosis development are only partially known. In order to investigate the regulation of plasma low-density lipoprotein (LDL) cholesterol in postmenopausal women and the effects of ERT on cholesterol and glucose metabolism and blood pressure, 79 hysterectomized, non-diabetic postmenopausal women were randomized in a doubleblind, double-dummy study to receive either peroral estradiol valerate (2 mg/day) or transdermal 17βestradiol gel (1 mg estradiol/day) for six months. At baseline the level of LDL cholesterol was related to body mass index, the fractional catabolic rate (FCR) and the production of LDL apolipoprotein B (apo B), but not to cholesterol absorption efficiency. Both peroral and transdermal ERT decreased plasma total and LDL cholesterol, while high-density lipoprotein cholesterol and triglycerides increased only in the peroral group. The LDLlowering response was related to changes in estrogen levels, which presumably enhance LDL receptor activity shown as an increase in FCR for LDL apo B. In contrast, the determined genetic factors, apo E phenotype, EcoRI and XbaI polymorphisms of the apo B gene and polymorphism of 7α-hydroxylase gene, were not significant in regulation of LDL cholesterol, neither did they modify the response of ERT in these postmenopausal women. Similar outcomes were observed with both peroral and transdermal ERT as regards glucose metabolism and blood pressure. The overall effect of ERT on glucose tolerance was found to be neutral. Blood pressure decreased among non-hypertensive subjects on both estrogens, which could be related, at least in part, to the alterations in vasoactive peptides. The data of the present study suggest an overall favorable effect of both peroral and transdermal estrogen on common cardiovascular risk factors. However, the clinical significance of these findings in the prevention of cardiovascular diseases needs to be proven in long-term, randomized trials." @default.
- W2247996556 created "2016-06-24" @default.
- W2247996556 creator A5088844491 @default.
- W2247996556 date "2003-01-01" @default.
- W2247996556 modified "2023-09-27" @default.
- W2247996556 title "Effect of estrogen replacement therapy on metabolic risk factors for cardiovascular diseases in hysterectomized postmenopausal women" @default.
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