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  • Title: Hormone therapy and the progression of coronary-artery atherosclerosis in postmenopausal women.
    Author: Hodis HN, Mack WJ, Azen SP, Lobo RA, Shoupe D, Mahrer PR, Faxon DP, Cashin-Hemphill L, Sanmarco ME, French WJ, Shook TL, Gaarder TD, Mehra AO, Rabbani R, Sevanian A, Shil AB, Torres M, Vogelbach KH, Selzer RH, Women's Estrogen-Progestin Lipid-Lowering Hormone Atherosclerosis Regression Trial Research Group.
    Journal: N Engl J Med; 2003 Aug 07; 349(6):535-45. PubMed ID: 12904518.
    Abstract:
    BACKGROUND: In postmenopausal women with coronary artery disease, conjugated equine estrogen with or without continuous administration of medroxyprogesterone acetate has failed to slow the progression of atherosclerosis. Whether 17beta-estradiol (the endogenous estrogen molecule) alone or administered sequentially with medroxyprogesterone acetate can slow the progression of atherosclerosis is unknown. METHODS: We conducted a double-blind, placebo-controlled trial in 226 postmenopausal women (mean age, 63.5 years) who had at least one coronary-artery lesion. Participants were randomly assigned to usual care (control group), estrogen therapy with micronized 17beta-estradiol alone (estrogen group), or 17beta-estradiol plus sequentially administered medroxyprogesterone acetate (estrogen-progestin group). In all patients the low-density lipoprotein (LDL) cholesterol level was reduced to a target of less than 130 mg per deciliter. The primary outcome was the average per-participant change between base-line and follow-up coronary angiograms in the percent stenosis measured by quantitative coronary angiography. RESULTS: After a median of 3.3 years of follow-up, the mean (+/-SE) change in the percent stenosis in the 169 participants who had a pair of matched angiograms was 1.89+/-0.78 percentage points in the control group, 2.18+/-0.76 in the estrogen group, and 1.24+/-0.80 in the estrogen-progestin group (P=0.66 for the comparison among the three groups). The mean difference in the percent stenosis between the estrogen group and the control group was 0.29 percentage point (95 percent confidence interval, -1.88 to 2.46), and the mean difference between the estrogen-progestin group and the control group was -0.65 (95 percent confidence interval, -2.87 to 1.57). CONCLUSIONS: In older postmenopausal women with established coronary-artery atherosclerosis, 17beta-estradiol either alone or with sequentially administered medroxyprogesterone acetate had no significant effect on the progression of atherosclerosis.
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