Anastrozole, sold under the brand name Arimidex among others, is an antiestrogenic medication used in addition to other treatments for breast cancer. [6] [7] Specifically it is used for hormone receptor-positive breast cancer. [7] It has also been used to prevent breast cancer in those at high risk. [7] It is taken by mouth. [7]

2023年7月4日 · Aromatase inhibitors (AIs) are indicated in the treatment of hormone-receptive breast cancer in postmenopausal women in various settings. Studies have shown that they are effective when used as adjuvant therapy to chemotherapy and surgery in metastatic estrogen-dependent breast cancer.

Anastrozole is a competitive, selective, non-steroidal aromatase inhibitor used as adjuvant therapy for the treatment of hormone receptor-positive breast cancer in postmenopausal women.

Anastrozole structure and mechanism of action. Anastrozole is a nonsteroidal AI that inhibits the aromatase enzyme by binding reversibly to its heme ion. By inhibiting the activity of aromatase, anastrozole reduces the levels of E2, E1, and E1S both …

2020年2月17日 · Anastrozole is a potent and selective nonsteroidal aromatase inhibitor. By inhibiting aromatase, the conversion of androstenedione to estrone, and testosterone to estradiol, is prevented, thereby decreasing tumor mass or delaying progression in patients with tumors responsive to hormones.

The third-generation aromatase inhibitors (AIs) anastrozole, exemestane and letrozole have largely replaced tamoxifen as the preferred treatment for hormone receptor – positive breast cancer in postmenopausal women. Approximately 185,000 new cases ...

2024年8月19日 · How does anastrozole work (mechanism of action)? Anastrozole belongs to a class of medicines called aromatase inhibitors. It works by blocking an enzyme called aromatase that helps produce...

2011年6月3日 · Anastrozole is a potent non-steroidal aromatase inhibitor that selectively inhibits aromatase. It is the first aromatase inhibitor approved by the US Food and Drug Administration as an adjuvant hormonal therapy in early-stage breast cancer.

To determine if the degree of estrogen suppression with aromatase inhibitors (AIs: anastrozole, exemestane, letrozole) is associated with efficacy in early stage breast cancer, and to examine for differences in the mechanism of action between the three AIs.

Type II nonsteroidal inhibitors such as anastrozole and letrozole are triazoles; they bind reversibly to the enzyme and fit into the substrate binding site, such that azole nitrogens interact with the heme prosthetic group. This type of association provides exquisite potency for and specificity against the aromatase enzyme.