Epimedium-derived phytoestrogen flavonoids exert beneficial effect on preventing bone loss in late postmenopausal women: a 24-month randomized, double-blind and placebo-controlled trial
- PMID: 17419678
- DOI: "V体育2025版" 10.1359/jbmr.070405
"VSports app下载" Epimedium-derived phytoestrogen flavonoids exert beneficial effect on preventing bone loss in late postmenopausal women: a 24-month randomized, double-blind and placebo-controlled trial
Abstract
Epimedium brevicornum maxim, a nonleguminous medicinal plant, has been found to be rich in phytoestrogen flavonoids VSports手机版. Results from a 24-month randomized double-blind placebo-controlled clinical trial showed that Epimedium-derived phytoestrogen flavonoids were able to exert beneficial effects on preventing bone loss in late postmenopausal women, without resulting in a detectable hyperplasia effect on the endometrium. .
Introduction: We performed a 24-mo randomized double-blind placebo-controlled clinical trial for evaluating the effect of the Epimedium-derived phytoestrogen flavonoids (EPFs) on BMD, bone turnover biochemical markers, serum estradiol, and endometrial thickness in postmenopausal women. V体育安卓版.
Materials and methods: One hundred healthy late postmenopausal women, with a natural menopausal history within 10 approximately 18 yr and with a BMD T-score at the lumbar spine between -2 and -2 V体育ios版. 5 SD, were randomized into EPF treatment group (n = 50; a daily dose of 60 mg Icariin, 15 mg Daidzein, and 3 mg Genistein) or placebo control group (n = 50). All participants received 300 mg element calcium daily. BMD, bone turnover biochemical markers, serum estradiol, and endometrial thickness were measured at baseline and 12 and 24 mo after intervention. .
Results: Eighty-five participants completed the trial. The patterns of BMD changes were significantly different between the EPF treatment group and placebo control group by repeated-measures ANOVA (p = 0. 045 for interaction between time and group at femoral neck; p = 0. 006 for interaction between time and group at lumbar spine). BMD was found with a decreased tendency in the placebo control group at 12 (femoral neck: -1. 4%, p = 0. 104; lumbar spine: -1. 7%, p = 0. 019) and 24 mo (femoral neck: -1. 8%, p = 0. 048; lumbar spine: -2. 4%, p = 0. 002), whereas EPF treatment maintained BMD at 12 (femoral neck: 1. 1%, p = 0. 285; lumbar spine:1. 0%, p = 0 VSports最新版本. 158) and 24 mo (femoral neck: 1. 6%, p = 0. 148; lumbar spine: 1. 3%, p = 0. 091). The difference in lumbar spine between the two groups was significant at both 12 (p = 0. 044) and 24 mo (p = 0. 006), whereas the difference in the femoral neck was marginal at 12 mo (p = 0. 061) and significant at 24 mo (p = 0. 008). Levels of bone biochemical markers did not change in the placebo control group. In contrast, EPF intervention significantly decreased levels of deoxypyrdinoline at 12 (-43%, p = 0. 000) and 24 mo (-39%, p = 0. 000), except for osteocalcin at 12 (5. 6%, p = 0. 530) and 24 mo (10. 7%, p = 0. 267). A significant difference in deoxypyrdinoline between the two groups was found at both 12 (p = 0. 000) and 24 mo (p = 0. 001). Furthermore, neither serum estradiol nor endometrial thickness was found to be changed in either groups during the clinical trial. .
Conclusions: EPFs exert a beneficial effect on preventing bone loss in late postmenopausal women without resulting in a detectable hyperplasia effect on the endometrium V体育平台登录. .
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