Ads
related to: low dose tamoxifen vs regular- Verzenio® Side Effects
Learn about possible side
effects & how to address them.
- Verzenio® Dosing Info
Find recommended dosing
instructions and scheduling.
- Verzenio® Effectiveness
Read about treatment,
effectiveness and safety.
- Save On Verzenio®
You may qualify for
a Verzenio savings offer.
- Verzenio® Side Effects
Search results
Results From The WOW.Com Content Network
Low-dose chemotherapy is being studied/used in the treatment of cancer to avoid the side effects of conventional chemotherapy. Historically, oncologists have used the highest possible dose that the body can tolerate in order to kill as many cancer cells as possible. [1] After high-dose treatments, the body reacts, sometimes quite severely.
Tamoxifen has been found to decrease insulin-like growth factor 1 (IGF-1) levels by 17 to 38% in women and men. [85] Suppression of IGF-1 production in the liver is a well-known action of estrogens and SERMs. [85] A 10 mg/day dosage of tamoxifen is nearly as effective as a 20 mg/day dosage in suppressing IGF-1 levels. [5]
In conventional chemotherapy, a dose close to the maximum tolerated dose is administered in a bolus manner to achieve cytotoxic effects on tumor cells. [5] However, the side effects are often significant as the cytotoxic agents also kill the fast-dividing cells normally present in the body, such as bone marrow cells and epithelial cells of the gastrointestinal tract. [6]
Maintenance chemotherapy is a repeated low-dose treatment to prolong remission. [5] [6]: 55–59 Salvage chemotherapy or palliative chemotherapy is given without curative intent, but simply to decrease tumor load and increase life expectancy. For these regimens, in general, a better toxicity profile is expected. [6]: 55–59
Tamoxifen is a pure antiestrogenic trans-isomer and has differential actions at estrogen target tissues throughout the body. Tamoxifen is selectively antiestrogenic in the breast but estrogen-like in bones and endometrial cancer. [24] Tamoxifen undergo phase I metabolism in the liver by microsomal cytochrome P450 (CYP) enzymes.
In pre-clinical models, testosterone XHT has been shown to lead to adverse cardiovascular effects, but adding a low-dose estrogen to that hormone therapy completely mitigated those effects. [45] (Goetz LG, et al. "Addition of Estradiol to Cross-sex Testosterone Therapy Reduces Atherosclerosis Plaque Formation in Female ApoE -/- Mice."
One of the largest breast cancer prevention studies ever, [2] it included 22,000 women in 400 medical centers in the United States and Canada. [3] [4] [5]The study concluded that raloxifene caused fewer side-effects and less endometrial cancer than tamoxifen.
Jordan, V.C. A current view of tamoxifen for the treatment and prevention of breast cancer (Gaddum Memorial Lecture)" British Journal of Pharmacology 110:507-517, 1993. (257 citations as of May 26, 2021). Jordan, V.C. and Morrow, M.M. Tamoxifen, raloxifene and the prevention of breast cancer. Endocrine Reviews 20:253-278, 1999.