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Tamoxifen(Nolvadex or tamoxifen citrate)

Tamoxifen(Nolvadex or tamoxifen citrate)

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Product name:Tamoxifen/Nolvadex/tamoxifen citrate

CAS:10540-29-1

MF:C26H29NO

MW:371.51

Description: Tamoxifen is non-steroidal anti-estrogen drugs. Its structure is similar to estrogen, existing Z type and O type isomers. The physical and chemical properties are different from each other, and physiological activity is different. E type has weak estrogenic activity, Z type having the effect of anti-estrogen. If the estrogen receptor (ER) is present in breast cancer cells, estrogen enters into tumor cells and binds with ER, promoting mRNA and DNA synthesis of tumor cells, stimulating tumor cell growth. However, Tamoxifen Z isomer enters into the cell, competitively binding with ER to form receptor complexes, inhibiting that estrogen plays an role, and inhibiting proliferation of breast cancer cells. Clinically it is mainly used for high levels of estrogen in breast cancer patients, which combines with androgen and other anticancer drugs (such as doxorubicin, etc., enhancing the effectiveness and showing good effect in postmenopausal patients with advanced breast cancer. Oral: once 10-20mg, 2 times 1 day. Common side effects are flushing, genital itching, occasional vaginal bleeding, a few may have a headache, fluid retention, for a long time may have retinal disease, vision loss, the other can have bone marrow suppression and gastrointestinal reactions.

Tamoxifen is used to treat breast cancer, and can reduce mortality and recurrence rate of estrogen-dependent breast cancer patients, so it has a good prospect. Another endocrine therapy aromatase inhibitor, it can inhibit effect of aromatase, preventing that the and rostenedione secreted by adrenal gland is transformed into estrogen in peripheral tissues (fat, skin, muscle), further reducing estrogen levels in postmenopausal women. It is currently one of the important means to treat postmenopausal patients with estrogen and progesterone receptor-positive breast cancer.

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