ANASTROZOLE-MEDICALISCopy

• DRUGBANK - Anastrozole
• indication:

  For adjuvant treatment of hormone receptor positive breast cancer , as well as hormonal treatment of advanced breast cancer in post-menopausal women. Has also been used to treat pubertal gynecomastia and McCune-Albright syndrome; however, manufacturer states that efficacy for these indications have not been established.

• pharmacology:

• mechanism:

  Anastrozole selectively inhibits aromatase. The principal source of circulating estrogen (primarily estradiol) is conversion of adrenally-generated androstenedione to estrone by aromatase in peripheral tissues. Therefore, aromatase inhibition leads to a decrease in serum and tumor concentration of estrogen, leading to a decreased tumor mass or delayed progression of tumor growth in some women. Anastrozole has no detectable effect on synthesis of adrenal corticosteroids, aldosterone, and thyroid hormone.

• toxicity:

  In rats, lethality is greater than 100 mg/kg.

• absorprion:

  Rapidly absorbed into the systemic cirulation following oral administration. Peak plasma concentrations are usually attained within 2 hours under fasting conditions, with steady-state plasma concentrations attained in approximately 7 days.

• halflife:

  50 hours

• roouteelimination:

  Hepatic metabolism accounts for approximately 85% of anastrozole elimination. Renal elimination accounts for approximately 10% of total clearance.

• volumedistribution:

• clearance: