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Rifampicin can reduce the efficacy of birth control pills or other hormonal contraception by its induction of the cytochrome P450 system, to the extent that unintended pregnancies have occurred in women who use oral contraceptives and took rifampicin even for very short courses (for example, as prophylaxis against exposure to bacterial meningitis).
Lepetit introduced Rifampicin, an orally active rifamycin, in 1966. [16] Rifabutin, a derivative of rifamycin S, was invented by Italian drug manufacturer Achifar in 1975 and came onto the US market in 1992. [16] Hoechst Marion Roussel (now part of Aventis) introduced rifapentine to the US market in 1998, with Achifar having synthesized it in ...
Rifapentine in pregnant women has not been studied, but animal reproduction studies have resulted in fetal harm and were teratogenic. If rifapentine or rifampin are used in late pregnancy, coagulation should be monitored due to a possible increased risk of maternal postpartum hemorrhage and infant bleeding.
CYP3A4 promotes the growth of various types of human cancer cell lines in culture by producing (±)-14,15-epoxyeicosatrienoic acids, which stimulate these cells to grow. [9] The CYP3A4 enzyme is also reported to have fatty acid monooxgenase activity for metabolizing arachidonic acid to 20-Hydroxyeicosatetraenoic acid (20-HETE).
White blood cells keep churning out cytokines, which leads to a constant state of inflammation, making it more difficult for the immune system to detect and attack cancer cells.
There are a few possible causes of resistance in cancer, one of which is the presence of small pumps on the surface of cancer cells that actively move chemotherapy from inside the cell to the outside. Cancer cells produce high amounts of these pumps, known as p-glycoprotein, in order to protect themselves from chemotherapeutics. Research on p ...
"Baywatch" star Nicole Eggert recalled the warning signs that she missed ahead of receiving her breast cancer diagnosis.. The 52-year-old actress was diagnosed with stage 2 cribriform carcinoma ...
Cancer treatments are a wide range of treatments available for the many different types of cancer, with each cancer type needing its own specific treatment. [1] Treatments can include surgery, chemotherapy, radiation therapy, hormonal therapy, targeted therapy including small-molecule drugs or monoclonal antibodies, [2] and PARP inhibitors such as olaparib. [3]