Perspectives for the Clinical Use of Aromatase Inhibitors

In: Breast Cancer: Scientific and Clinical Progress · 1988 · pp. 285–298 · doi:10.1007/978-1-4613-1753-1_19 · W86266137
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Aromatase inhibitors, by blocking estrogen synthesis, could effectively treat estrogen-dependent diseases, particularly in postmenopausal women, and may prove valuable for various cancers and benign conditions.

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This chapter discusses the clinical use of aromatase inhibitors by reviewing aromatase’s role as the rate-limiting enzyme in estrogen biosynthesis and how blocking estrogen depends on the physiologic source of estrogen and the body’s regulatory responses. It argues that estrogen blockade may be more effective in postmenopausal women than in premenopausal women or men, and it weighs advantages and disadvantages across estrogen synthesis- or action-blocking strategies. The chapter’s caveat is that its conclusions are based on a strategy-level assessment rather than reporting new comparative clinical trial outcomes. Relevance to endometriosis: it explicitly mentions that aromatase inhibitors may have a place in the management of benign diseases such as endometriosis, though the chapter’s main focus is breast (and endometrial) cancer–oriented perspectives on aromatase inhibition.

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Abstract

The enzyme aromatase catalyzes the rate-limiting step in estrogen biosynthesis in both men and women. The availability of more potent, selective and non-toxic aromatase inhibitors could potentially provide effective therapy for a number of estrogen-dependent diseases. Clinical application of these agents depends upon the physiologic source of estrogen and the ability of regulatory systems to counteract the effects of these inhibitors. Consequently, estrogen blockade might be more effective in postmenopausal women than in premenopausal women or in men. In assessing aromatase inhibitors, the various advantages and disadvantages of all the available strategies to block estrogen synthesis or action must be considered. Such analysis suggests that aromatase inhibitors will find an important place in the management of breast and endometrial carcinomas and possibly benign diseases such as endometriosis, leiomyomata uteri, perimenopausal bleeding and gynecomastia. Preview Unable to display preview. Download preview PDF. Similar content being viewed by others

References

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