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Ovarian stimulation with the aromatase inhibitor letrozole has been proposed for ovulation induction in order to treat unexplained female infertility. In a multi-center study funded by the National Institute of Child Health and Development, ovarian stimulation with letrozole resulted in a significantly lower frequency of multiple gestation (i.e., twins or triplets) but also a lower frequency ...
Among all aromatase inhibitors, Letrozole is commonly used for improving female fertility. It works by inhibiting aromatase which is an enzyme that catalyses the conversion of androstenedione and testosterone to estrogen by hydroxylation. Hence, Letrozole inhibits the synthesis of estrogen. [18]
Ovulation induction is the stimulation of ovulation by medication. ... (an aromatase inhibitor). ... Symptoms depend on whether the case is mild, moderate, or severe ...
It is in fact possible to restore ovulation using appropriate medication, and ovulation is successfully restored in approximately 90% of cases. The first step is the diagnosis of anovulation. The identification of anovulation is not easy; contrary to what is commonly believed, women undergoing anovulation still have (more or less) regular periods.
Such conditions may be treated with drugs with antiestrogen actions, including selective estrogen receptor modulators (SERMs) such as tamoxifen and clomifene, estrogen receptor antagonists such as fulvestrant, aromatase inhibitors such as anastrozole and exemestane, [12] gonadotropin-releasing hormone (GnRH) analogues such as leuprorelin and ...
Aromatase inhibitors, which stop the production of estrogen in postmenopausal women, have become useful in the management of patients with breast cancer whose lesion was found to be estrogen receptor positive. [33] Inhibitors that are in current clinical use include anastrozole, exemestane, and letrozole.
Although aromatase inhibitors and antigonadotropins can be considered antiestrogens by some definitions, they are often treated as distinct classes. [9] Aromatase inhibitors and antigonadotropins reduce the production of estrogen, while the term "antiestrogen" is often reserved for agents reducing the response to estrogen. [10]
Although primarily used in breast cancer treatment, aromatase inhibitors (particularly generic letrozole) are also used in ovulation induction. Aromatase inhibitors are a common fertility treatment to treat women with PCOS.
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