Tamoxifen metabolism

Discussion in 'Web Medical Information' started by Fruit, 27-Aug-2019.

  1. JloxMaTblu Moderator

    Tamoxifen metabolism


    One of the selective estrogen receptor modulators (SERM) with tissue-specific activities for the treatment and prevention of estrogen receptor positive breast cancer. Tamoxifen acts as an anti-estrogen (inhibiting agent) in the mammary tissue, but as an estrogen (stimulating agent) in cholesterol metabolism, bone density, and cell proliferation in the endometrium. In 2006, the large STAR clinical study concluded that raloxifene is equally effective in reducing the incidence of breast cancer, but after an average 4-year follow-up, although the difference was not statistically significant, there were 36% fewer uterine cancers and 29% fewer blood clots in women taking raloxifene than in women taking tamoxifen. Tamoxifen improves fertility in males with infertility by disinhibiting the hypothalamic–pituitary–gonadal axis (HPG axis) via ER antagonism and thereby increasing the secretion of luteinizing hormone (LH) and follicle-stimulating hormone (FSH) and increasing testicular testosterone production. It is taken as a preventative measure in small doses, or used at the onset of any symptoms such as nipple soreness or sensitivity. Other drugs are taken for similar purposes such as clomifene and the anti-aromatase drugs which are used in order to try to avoid the hormone-related adverse effects. Occasionally tamoxifen is used in treatment of the rare conditions of retroperitoneal fibrosis A report in September 2009 from Health and Human Services' Agency for Healthcare Research and Quality suggests that tamoxifen, raloxifene, and tibolone used to treat breast cancer significantly reduce invasive breast cancer in midlife and older women, but also increase the risk of adverse side effects. Some cases of lower-limb lymphedema have been associated with the use of tamoxifen, due to the blood clots and deep vein thrombosis (DVT) that can be caused by this medication. Resolution of the blood clots or DVT is needed before lymphedema treatment can be initiated.

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    This test determines the amount of active drug in an individual patient. It can be used to optimize tamoxifen dosage and assess patient adherence to therapy. Although metabolism and the cyp3a4. His work has appeared in los angeles and tamoxifen, is the human aug 19, is the united states food and cyp3a4. Purpose Levels of endoxifen, the most active metabolite of tamoxifen, vary by the highly polymorphic cytochrome P450 CYP 2D6 enzyme. We prospectively investigated.

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    Tamoxifen metabolism

    Tamoxifen Pathway, Pharmacokinetics Overview PharmGKB, Tamoxifen metabolism - Teresonic

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  6. Feb 19, 2018. Tamoxifen metabolism and efficacy in breast cancer– a prospective multicentre trial. Patrick Neven. 1,2. Lynn Jongen. 1. Anneleen.

    • Tamoxifen metabolism and efficacy in breast cancer - Clinical Cancer..
    • Tamoxifen Metabolism and Efficacy in Breast Cancer A Prospective..
    • Tamoxifen - Wikipedia.

    Feb 1, 2018. CYP2D6 genotype is an inherited factor that alters the metabolism of. Tamoxifen is converted through the process of liver metabolism into. The selective estrogen receptor modulator tamoxifen has been used for more than three decades to treat metastatic and early-stage receptor-positive breast cancer and. Dec 7, 2018. Since the early 1980s, systemic tamoxifen has been the standard approach to reducing risk of recurrence in women with estrogen receptor.

     
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