Quantitative and qualitative changes in lipids, lipoproteins, apolipoprotein A‐I, and sex hormone‐binding globulin due to two doses of conjugated equine estrogen with and without a progestin
Quantitative and qualitative changes in lipids, lipoproteins, apolipoprotein A‐I, and sex hormone‐binding globulin due to two doses of conjugated equine estrogen with and without a progestin
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两剂含和不含孕激素的结合马雌激素导致脂质、脂蛋白、载脂蛋白 A-I 和性激素结合球蛋白的定量和定性变化
DOI:
10.1016/0020-7292(94)90487-1
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发表时间:
1994
影响因子:
3.8
通讯作者:
Robert J. Stillman
中科院分区:
文献类型:
--
作者:
Valery T. Miller;R. Muesing;John C. LaRosa;D. B. Stoy;Sarah E. Fowler;Robert J. Stillman
Objective:To determine whether the quantitative and qualitative effects on lipoproteins differ between two doses of conjugated equine estrogen before and after progestin administration.Methods:We randomized 103 postmenopausal women into a control group and into two groups receiving either 0.625 mg or 1.25 mg of conjugated equine estrogen for 4 months and then the same estrogen dose plus cyclic medroxyprogesterone acetate for 8 months.Results:Both estrogen doses similarly lowered (P< 01) low-density lipoprotein (LDL) cholesterol and raised (P<. 01) high-density lipoprotein (HDL) cholesterol, apolipoprotein AI, triglyceride levels of all lipoproteins, and sex hormone-binding globulin capacity. Cyclic addition of the progestin reduced HDL cholesterol (P< 01) and apolipoprotein AI (P< 05), but not LDL cholesterol in either estrogen group. A greater lowering of HDL cholesterol (P< 05) in response to the progestin was seen with the 0.625-mg dose of estrogen. Estrogen-induced triglyceride enrichment of HDL and LDL was not reversed by the progestin.Conclusion:The only significant quantitative difference in lipoprotein levels between the doses of conjugated equine estrogen before or after administration of medroxyprogesterone acetate was a greater decline in HDL cholesterol levels with the lower dose after 4 months of the progestin. This difference was not sustained over time. There were no differences between doses in the estrogeninduced triglyceride enrichment of lipoproteins, and these qualitative changes were not affected by the progestin.(Obstet Gynecol 1994; 83: 173-9)