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Estradiol (17-beta estradiol) is a sex hormone. Labelled the "female" hormone but also present in males it represents the major estrogen in humans. Critical for sexual functioning, estradiol also supports bone growth. more...

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Synthesis

Estradiol, like other sex steroids, is derived from cholesterol. After side chain cleavage and either utilizing the delta-5 pathway or the delta-4 pathway androstenedione is the key intermediary. Androstendione is either converted to testosterone which in turn undergoes aromatization to estradiol, or, alternatively, androstendione is aromatized to estrone which is converted to estradiol.

Conversion of testosterone to estradiol:

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Berlex Lab's Climara approved for menopause, osteoporosis - Climara and Finevin approved by the Food and Drug Administration - Brief Article
From Drug Store News, 6/25/01

The FDA approved an expanded indication for Climara 0.025 mg, giving it the green light to be marketed as a "starting dose" for the treatment of menopausal symptoms and the prevention of osteoporosis. Berlex Laboratories, the U.S. affiliate of Schering AG, manufacturers the drug. The Climara patch, with its main ingredient being derived from soy, delivers 17-beta estradiol directly through the skin and into the bloodstream for seven days.

Berlex announced separately FDA's approval of Finevin (azelaic acid cream 20 percent) for the topical treatment of mild to moderate inflammatory acne vulgaris. It sells for an average wholesale price of $36.95 and was launched concurrently with a patient education and compliance program.

COPYRIGHT 2001 Lebhar-Friedman, Inc.
COPYRIGHT 2001 Gale Group

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