期刊
AMERICAN JOURNAL OF OBSTETRICS AND GYNECOLOGY
卷 192, 期 1, 页码 42-47出版社
MOSBY-ELSEVIER
DOI: 10.1016/j.ajog.2004.07.041
关键词
depot medroxyprogesterone acetate; adolescent bone mineral density; estrogen
资金
- EUNICE KENNEDY SHRIVER NATIONAL INSTITUTE OF CHILD HEALTH &HUMAN DEVELOPMENT [R01HD039009] Funding Source: NIH RePORTER
- NCRR NIH HHS [M1RR0008012] Funding Source: Medline
- NICHD NIH HHS [R01HD39009] Funding Source: Medline
Objective: The purpose of this clinical trial was to evaluate the effect of estrogen supplementation on bone mineral density in adolescent girls who received depot medroxyprogesterone acetate for contraception. Study design: One hundred twenty-three adolescents who began receiving depot medroxyprogesterone acetate injections every 12 weeks were assigned randomly to receive monthly injections of estradiol cypionate or placebo. The main outcome was bone mineral density that was measured by dual energy x-ray absorptiometry for 12 (n = 69) to 24 (n = 36) months. Participants, technicians, and physicians were blinded to estrogen treatment. Results: Over the 24-month period, the percentage of change from baseline bone mineral density at the lumbar spine was 2.8% in the estradiol cypionate group versus -1.8% in the placebo group (P < .001). At the femoral neck, the percentage of change from baseline bone mineral density was 4.7% in the estradiol cypionate group versus -5.1% in the placebo group (P < .001). Conclusion: Our results suggest that estrogen supplementation is protective of bone in adolescent girls who receive depot medroxyprogesterone acetate injections. (C) 2005 Elsevier Inc. All rights reserved.
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