Raloxifene hydrochloride

RaloxifeneHcl(LY156758 Hcl) is a second generation selective estrogen receptor antagonist.(In Vitro):Raloxifene activates TGF beta 3 promoter as a full agonist at nanomolar concentrations, and raloxifene inhibits the estrogen response element-containing vitellogenin promoter expression as a pure estrogen antagonist in transient transfection assays.Raloxifene is a potent uncompetitive inhibitor of human liver aldehyde oxidase-catalyzed oxidation of phthalazine, vanillin, and nicotine-Delta1'(5')-iminium ion, exhibits Ki values of 0.87 to 1.4 nM.Raloxifene is also a noncompetitive inhibitor of an aldehyde oxidase-catalyzed reduction reaction of a hydroxamic acid-containing compound, with a Ki value of 51 nM.Raloxifene (0-80 μM; 48 hours) significantly decreased in mouse mammary carcinoma BJMC3879luc2 cells viability as a concentration manner in BJMC3879luc2 cells.(In Vivo):Raloxifene (3 mg/kg; once daily) has potent estrogenic activity on bone resorption and serum cholesterol, a lesser effect on bone formation, and minimal activity on uterine wet weight in ovariectomized (OVX) rats.Raloxifene (oral administration; 0.1 mg/kg-10 mg/kg; 5 weeks) increases bone mineral density in the distal femur and proximal tibia. It reduces serum cholesteroloral with ED50 of 0.2 mg/kg in ovariectomized (OVX) rat.Raloxifene (subcutaneously implanted mini-osmotic pumps; 18 or 27 mg/kg; once daily; 6 weeks) significantly suppresses tumor volumes in mice, in addition, the multiplicity of lymph node metastasis is also significantly decreased.\n.