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Endocrinology

Control of estradiol secretion in reproductive aging determined

Published in Drug Week, October 20th, 2006

Recent research from the United States published in the journal Human Reproduction has chronicled the control of estradiol (E-2) secretion in reproductive aging.

"E-2 concentration is preserved in older reproductive-aged women despite a decrease in follicle number and androstenedione (AD) levels. We hypothesized that increased aromatase activity accounts for E-2 preservation in older women," wrote C.K. Welt and colleagues, Massachusetts General Hospital.

"Older (36-46 years; n=11) and younger (21-35 years; n=10) women with 25- to 35-day menstrual cycles participated in a parallel design study. Daily blood samples were drawn starting at menses,...

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