Randomized, placebo-controlled study investigating the use of physiologic, transdermal estrogen for low bone mass in adult women with anorexia nervosa.
Anorexia nervosa is a prevalent psychiatric with a lifetime prevalence of up to 2.2%. Among the many medical co-morbidities associated with anorexia nervosa, the most common is significant bone loss, which can persist despite weight recovery. Nearly 90% of women with anorexia nervosa have osteopenia and this low bone mass is associated with an increased fracture risk. Nearly 30% of women with anorexia nervosa report a history of a fracture and a prospective study demonstrated a 7-fold increased risk of fracture in women with anorexia nervosa compared to age-matched controls. Because anorexia nervosa is a chronic disease that can persist despite psychiatric and nutritional counseling, the bone loss and increased fracture risk can persist and lead to lifelong morbidity. Therefore, finding a treatment for bone loss associated with anorexia nervosa is of critical importance. This 18-month randomized, placebo-controlled study will investigate in women (ages 20 to 45 years old) with anorexia nervosa whether treatment with transdermal estrogen replacement will increase bone mineral density (BMD).
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
QUADRUPLE
Enrollment
66
Transdermal estradiol (0.045mg)/levonorgestrel (0.015mg) weekly patch
Placebo weekly patch
University of Pittsburgh School of Medicine
Pittsburgh, Pennsylvania, United States
RECRUITINGChange in bone mineral density at 18 months
Change in lumbar spine bone mineral density at 18 months
Time frame: Baseline, 18 months
Change in bone mineral density at hip at 18 months
Change in total hip bone mineral density at 18 months
Time frame: Baseline, 18 months
Change in bone mineral density at femoral neck at 18 months
Change in femoral neck bone mineral density at 18 months
Time frame: Baseline, 18 months
Change in parameters of bone microarchitecture at 18 months
Change in microarchitectural parameters as measured by high-resolution peripheral quantitative CT at 18 months
Time frame: Baseline, 18 months
Change in estimated bone strength at 18 months
Change in estimated bone strength as assessed by finite element analysis at 18 months
Time frame: Baseline, 18 months
Change in vertebral fractures at 18 months
Change in vertebral fractures as assessed by vertebral fracture assessment at 18 months
Time frame: Baseline, 18 months
Shari Reynolds
CONTACT
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